What you should know about ATU s

UNDERSTANDING ATU’s THEIR SERVICE REQUIREMENTS AND MAINTENANCE Conference 2015 What you should know about ATU’s And How to Service Them Ecological ...
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UNDERSTANDING ATU’s THEIR SERVICE REQUIREMENTS AND MAINTENANCE

Conference 2015

What you should know about ATU’s And How to Service Them

Ecological Laboratories, Inc. Douglas A. Dent Sr. V.P Sales - Technical Support - Product-Development 1/27/2015

Why some on-site systems fail

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ATU So What’s The Big Difference ?

Septic tanks -vs.- Aerobic Treatment Systems (ATU)

It’s a Different Ball Game Folks TIME is the key factor (speed) !        

Entirely different process and biological pathways Time refers to the speed of biological removal & effluent quality Speed of process is indicated by ATP (how fast) Anaerobic fermentation = ATP-2 Aerobic oxidation reduction = ATP-38 Anoxic respiration = ATP-34 (termed denitrification) ATU organic oxidation reduction requires supporting equipment Requires some level of understanding (knowledge) 1/27/2015

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The anaerobic process is described in four steps: Hydrolysis: large polymers are broken down by enzymes. 2. Fermentation: Acidogenic fermentations are most important, acetate is the main end product. Volatile fatty acids are also produced along with carbon dioxide and hydrogen. 3. Acetogenesis: Breakdown of volatile acids to acetate and hydrogen.  Methanogenesis: Acetate, formaldehyde, hydrogen and carbon dioxide are converted to methane and water.  Don’t confuse septic tanks with anaerobic digesters The anaerobic process retains higher BOD, and is significantly slower in organic reduction processes, steady & reliable 1.

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Aerobic and anaerobic processes (comparing speed) 



The chemical energy stored in glucose generates far more ATP in aerobic respiration than in respiration without oxygen, (glycolysis and fermentation). In aerobic respiration each molecule of glucose can generate 36-38 molecules of ATP, but only 2 ATP molecules in respiration without oxygen (through glycolysis and 4 fermentation). Why some on-site systems fail

Can you answer these questions      

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What are the key components of an ATU When and how often do you need to pump What should the aeration section look like What color, odor and level of foam How do biological systems settle their MLSS Where does ammonia, nitrite and nitrate come from, and how is ammonia removed in an ATU How is nitrate removed How can and ATU be evaluated

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Getting started

ATU System Biology Biology and wastewater



All aerobic treatment systems and ATU’s require microorganisms in the removal of organic matter



Biological treatment systems operate as a result of equipment assisting microorganisms, these wastewater processes include lagoons, aerated lagoons, extended aerated lagoons, activated sludge systems, trickling filters, RBC’s, SBR’s, and of course ATU on-site wastewater systems.

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ATU System Biology 1. Heterotrophic Bacteria – waste degraders 2. Autotrophic Bacteria, Nitrifiers – remove ammonia 3. Indicator Organisms/Higher Life Forms (Amoeboids, Flagellates, Free swimming Ciliates, Stalked Ciliates, Rotifers, Nematodes) Relative predominance of Indicator organisms reveals system health 1/27/2015

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Microorganisms function by absorption, wastewater oxidation reduction is a time process requireing supporting technologies This

Not This

Microbes have to break down what they contact and absorb this requires retention time.

Microbes Use Enzymes (Keys) to Bring Nutrients Inside

Think of the dimples on a golf ball as receptor sites on a microbe. Matter in the environment adsorb to receptor sites, microbes uses enzymes (keys) to unlock the particle and absorb within the cell.  Some organic constituents are slow and difficult to degrade resulting in cell loading and system problems, each wastewater system may operate differently based on the influent water  Bacteria produce more cells and excretes ammonia, water, polymers and carbon dioxide as by products.

Heterotrophic Microorganisms

Wastewater systems rely on biology

Binary Fission Starting and maintaining a process is essential Parent cell Cell elongation Growth of cell and distribution of nuclear material

Formation of cell wall and distribution of cellular material

Separation into individual cells 11

The Information and Tools You Need To Service an ATU

ATU Service often leaves one wondering ?      

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Is the system working properly? How do I determine the problem? Is the system biology dead? “MAYBE!” How can I make a proper evaluation? When to pump the sludge tank? How do I deal with Ammonia & Nitrate, where do they come from? How to achieve Nitrate reduction? Odor, why, and how to control it

What Tools Do I Need?          

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A Little Knowledge Proper Equipment (below & following slides) Microscope (For Biological Review) 1000 ml Graduate (Settling Test) pH Meter, or pH Paper (swim pool test kit) Test Kits for: Ammonia, Nitrite & Nitrate Sludge Judge (To Make a Judgment) Gloves, Goggles (Bio-Security) Camera always helps Close pin, “now that would indicate a problem” Why some on-site systems fail

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Knowledge will increase your value! I thought this system was just what they needed, what the HECK** is this*#*#*#*#*!?!

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Fundamental wastewater treatment processes Lets look a little closer at wastewater systems

Most biological wastewater system designs feature;



Primary treatment Secondary treatment Tertiary treatment



Add equalization to assure a continued supply of carbon

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Ecological Laboratories, Inc

Fundamental wastewater treatment processes 

Primary treatment Typically physical/chemical treatment  Removes particulates and colloidal organics  Includes: 

 Bar

screens  Primary sedimentation (Clarifier)  Many onsite wastewater systems utilize trash traps Ecological Laboratories, Inc

Fundamental wastewater treatment processes 

Secondary treatment (microorganisms & equipment) 

Biological aerobic treatment  Purpose

is to remove dissolved organics from water and convert to CO2, water and cells which can be settled out and separated from water  Most cost effective way to remove most dissolved organics. Ecological Laboratories, Inc

Biological Treatment systems 

Two basic types secondary treatment Suspended growth systems  SGS aeration provides mixing and aerobic support, maintains MLSS in suspension  Fixed film systems  FFS rely on bio film formation to retain organic matter prior to oxodation 

Ecological Laboratories, Inc

Biological Treatment System Review 



Suspended growth systems  Facultative lagoons  Aerated lagoons  Activated sludge systems (primary ATU design)  Extended aeration  Carrousel or racetrack type systems  Batch Fill and Draw (SBR)  Membrane bioreactor Can be complete mix or plug flow

Ecological Laboratories, Inc

Biological Treatment Systems 

Fixed film systems Trickling filters  Bio towers  Rotating biological contactors  Some ATU’s incorporate Suspended Growth design and Fixed film technology 

Ecological Laboratories, Inc

Fixed film systems work as a result of bio film development

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Bio films are quite complex 

Consist of multiple species of microorganisms. Combined with gel matrices surrounding the cells. The bio film matrices consist of polysaccharides (EPS), the primary structural component of bio films. EPS’s are critical to the formation of soil structure and the EPS exhibits toxicity protection to bio film biology

Single-Celled-Microorganisms Polymer Conversion to bio film

Attachment to media by charge relationship and via polymer production

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Microbial attachment and bio film development polymers Microbes Microbes adhere to particles due to charge relationships, hydrophobic & hydrophilic forces, & extracellular polymers. Microbes form strong attachments through the production of polysaccharide matrix and cellular structures called fimbrae, the bio film functions as a membrain filtering out material for oxidation reduction over time.

Denitrification = Nitrate Removal Denitrification section, within bio films, in anaerobic environments

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Fundamental wastewater treatment processes Tertiary treatment after secondary treatment For polishing of wastewater  Can include physical/chemical treatment e.g. activated carbon to remove levels of organics where biological treatment is not feasible nor cost effective, or nutrient removal where there are forms of biological treatment  Denitrification can be a separate process  Phosphate removal 

Ecological Laboratories, Inc

System Survey Form The First Suggested Step How to evaluate a system properly





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To address and resolve ATU problems adequate information is critical to resolution Should contain all necessary information needed to make recommendations Saves time Avoids errors in recommendations Makes company look professional

Ecological Laboratories, Inc

SYSTEM SURVEY FORM Project Name: __________________________________________________________ (Short Reference Name for E-Mails, Etc) Region: _______________________________________________________________ Customer Name:________________________________________________________ Address:_______________________________________________________________ City State & Zip :________________________________________________________ Country: ______________________________________________________________ Phone:____________ Fax:_______________ E-mail: __________________________ Contact Name:_____________________ Title:____________________________ Residential, commercial Industry__________________________________________________________ Type of System ___________________________ Influent Flow (Q)* ______________________________________________________ Equalization? ________ If yes, what is capacity? ____________________ Primary Treatment: __________________(ex. Settling, Skimming, DAF, API separator) Program Objectives: Reduce Odor, Reduce BOD etc)

Ecological Laboratories, Inc

Operating Conditions 

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pH – Ideally between 6.9 and 8.9 (optimum range 7.5), effects cell division and organic removal Temperature – 50 degrees F to 85 F (70/80 ideal) High temperature effects and limits DO C:N:P ratio – 100:5:1 Retention, equalization, continues carbon supply Watch washout potential (bio mass) Absence of strong inhibitory or toxic compounds Bio Augmentation ideal as many bacteria can not tolerate high levels of many inhibitory compounds and have higher toxicity thresholds Ecological Laboratories, Inc

ATU Operating parameters 





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Hydraulic retention time (HRT ), is the average amount of time water spends in system. Basically the treatment time or reaction time normally 6 to 12 hours + (based on substrate and loading) Mixed liquor suspended solids (MLSS), combination of influent wastewater and bacteria in aeration basin or reactor Mixed liquor volatile suspended solids (VSS) Food to mass (F to M) ratio, total pounds of BOD entering system (BOD Conc x Flow) relative to total pounds of biomass in the system (MLSS or MLVSS Ecological Laboratories, Inc

Basic Processes These biological process & pathways may all occur in the same wastewater system 

Aerobic  BOD + o2 + N + P --- CO2 + water + cells  ATP 38 = rate of performance



Anaerobic  BOD + N + P ------ CH4 + CO2 + H2S + Cells  ATP 2 = rate



Facultative anaerobic  BOD + NO3 or SO4 + N + P ----- CO2 + N2 or H2S + water + cells  ATP = 2



Anoxic = ATP 34 (denitrification process) Ecological Laboratories, Inc

Operating tests 



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SV30 – settled volume in 30 minutes. Measure of solids build-up MLSS, * important. DOUR – dissolved oxygen uptake rate test. Measure how fast bacteria are working. Test protocol available. DO - a must pH - critical Microscopic examination indicator organisms BOD – Biochemical oxygen demand COD – chemical oxygen demand Ecological Laboratories, Inc

What to Observe in the Aeration Tank   



Normal = see good mixing Normal = small amount of light colored foam Startup/Recovery = billowing foam and young sludge Dense Foam and Layer of Dark Brown Foam, rapid settling 30 minute, pin flock, old sludge = time to pump

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Activated sludge = ATU’s

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Pretreatment, Aeration, Settling, Nitrification  Denitrification Biological Functions in Each Section

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Denitrification = Nitrate Removal Denitrification section, within bio films, in anaerobic environments

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Bacterial Growth Continuous Flow System



Population goes back and forth between log growth and endogenous resp

Ecological Laboratories, Inc

Factors Necessary for Biological Growth Aerobic treatment systems         1/27/2015

Substrate – Constant Food Supply D.O. Mixing Proper pH Proper Nutrients Temperature Adequate retention Time Equalized flow Why some on-site systems fail

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Can the System’s Biology Survive? First Things First!        

Aerobic refers to; D.O. @ 1 to 2 ppm, (minimum) pH - 6.9 to 8.7, ideal 7.5 Temperature 50F to 85F, 70/75 F Ideal Food Supply = 10 to 300 ppm of BOD at all times ATU’s require constant BOD = F/M (food to mass) Must develop a stable MLSS (bio mass) Avoid extreme peak flow (wash out) Low Chemical Toxicity

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D.O., Ph, TDS Tests; D.O, Ph, conductivity , allow for DOUR evaluation ,i.e., dissolved Oxygen Uptake. Allowing for accurate information on system base line requirements essential to performance

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Sludge Judge – large opening   



Large opening ideal for testing Slow and steady use These sampling devices enables you to take accurate readings on settled solids in a variety of liquids, to any depth. Sludge sampling can Indicate systems performance, settling, and when to pump

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Sludge Judge is an essential tool for ATU Service How to use the equipment is important, and when selecting a unit chose one with a large opening to allow the settled solid's to enter the unit

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Sludge Judge & Color What to look for

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What to Observe in the Aeration Tank   



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Normal = see good mixing Normal = small amount of light colored foam Startup/Recovery = billowing white foam and young sludge Dense Foam, or Layer of Dark Brown Foam = old sludge, time to pump Black foam (not good =anaerobic) Musty odor Why some on-site systems fail

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Color, Settling and Odor What to look for      

White Foam - young sludge Light Brown – OK – what you want to see Dark Brown - OK, old sludge, (pump soon) Black - Septic, low D.O. Bulking - Filamentous Hydrogen Sulfide – no D.O.

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Check For Settling - 30 Minute SVI 

The standard SVI test requires a 1-liter graduated cylinder for the MLSS settling test. A separate aliquot of mixed liquor is used for a total suspended solids



The required 1000/ml sample is taken from the aeration basin and must be fresh, mixed and tested at once



(TSS) test. A fresh sample of mixed liquor should be used for the tests and is normally collected from the effluent end of the aeration system, just upstream of the secondary clarifier.

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What Should I Use? 

Refrain from using tall graduated cylinders for the settling test, as the friction created by the close walls can slow the settling, change settling velocities and give false readings.



Wide-mouth containers that hold at least 1 liter are acceptable, but 2-liter containers are preferred.



It is important to allow the sludge to settle in a quiet area where it won’t get bumped or disturbed. The sample should also be kept out of direct sunlight.

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Low Cost and Effective

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CapitolBrand CBVV614081-E1 Polypropylene 1000m L Low Form Plastic Griffin Beaker, 100m L, Blue by CapitolBrand



Price: $6.70

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What You Will See 

In the settleability test, the sludge first forms a blanket and seems to flocculate together before starting to settle. This usually happens in the first five minutes of the test. As the particles come together, they form larger particles that have a specific gravity greater than water.



As the sludge settles, you will notice channels through the sludge that are formed by the liquid being squeezed out of the sludge as it compacts.



The faster and better settling the better the system is working, “you want clear water at the top” 1/27/2015

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Various containers are used for settleability tests. From left: 1.4-liter settle meter, 2-liter settle meter, 1-liter beaker.

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Old Sludge - Time to Pump 

The floc particles would be dense and granular in appearance (like a BB). As this type of sludge settles, it may leave a cloudy appearance in the supernate above the settled sludge blanket.



This turbidity is called pinpoint floc (pin-floc). The sludge usually begins settling quickly after the start of the sludge settleability test, and it does not form larger particles before settling.



Effluent BOD results may be below requirements, but TSS levels can still be high. 1/27/2015

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30 min settling, ml/L x 1,000. MLSS, mg/L. 2. SDI = 100. SVI. 3.

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What You May See  

Example 1: The settleability test is 875 in 30 minutes and the MLSS is 3,000 mg/L. The SVI calculates to 292. If the supernatant is very clear, then filamentous sludge bulking may be the cause of the high SVI. In the actual clarifier, the sludge blanket might be seen below the surface.

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Example 2: The settleability test is 700 after 30 minutes and the MLSS is 1,200 mg/L. The SVI is over 580. The supernatant in the settleability test and in the clarifier looks very cloudy, with a green/gray appearance. Look for a young sludge condition, the result of toxic influent loading, or a clarifier solids washout event.

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What’s Happing Dude  

Example 3: The settleability test result is 255 in 30 minutes and the MLSS test result is 4,200 mg/L. This SVI is 61 and indicates a rapid-settling sludge condition. The clarifier may be somewhat cloudy, and pinpoint floc particles might be seen in the settleability test container. An old, over-oxidized MLSS may be the cause.  Time to pump 1/27/2015

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Example 4: The settleability test result is 400 and the MLSS is 3,000 mg/L. The SVI is 133. This might be a good SVI for a plant providing a goodsettling sludge that first forms a blanket, and then traps fine particles as it slowly settles and compacts.

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So, The Sample Did Not Settle 



A high SVI may also indicate filamentous sludge bulking. –This is bad DUDE! In this case, a microscopic exam is recommended and might show light floc particles that contain long filaments extending out of the particle and touching filaments from other particles. Or, the filaments may be contained within the floc, causing a dispersed, open floc structure. In these cases, the liquid above the sludge blanket is usually very clear. The sludge can sit in the settleability test container for long periods and settle very little, or not at all.

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ATU BIOLOGICAL REVIEW Microscopic Examination

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Microscopic Examination

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Microscopic examination of wastewater sludge is invaluable in determining the health of the treatment system and in evaluating treatment problems that may be occurring.



For activated sludge the abundance and identity of filaments is essential as sludge bulking and foaming are common operational problems. Why some on-site systems fail

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Indicator Organisms

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Good Guys & Bad Guys

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Good Guys = Floc Formers



Bad Guys = Filamentous Bacteria result in bulking and loss of biomass due the presence of filamentous that float and carry-off bio-solids (waste & bacterial)

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Filamentous Microbe Bad Guy

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Finding And Confirming The Bad Guy A Closer Look

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Filamentous Bulking

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You Must Eliminate Filamentous 

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When choosing a method of filamentous control (chlorination or other oxidizer), SVI should be calculated and used in trend charts to show the effectiveness of control. In an ATU pump, clean and chlorinate Make sure the system has adequate D.O. pH and other requirements

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Look to see a variety of “Indicator Organisms” in a well operating system.

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Amoeba

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Start up



Recovery



Toxicity present



Young sludge

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Getting There: Higher Life Forms Stalk Ciliates

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Flagellate

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Higher Life Form - Indicator Organisms Rotifer, Predominance Indicates Old Sludge

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Four Stages Bacterial Growth Curve Start – Steady State - Death

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Micro-Organisms in On-Site Wastewater ATU’s 







To effectively operate a biological wastewater treatment system (ATU) you should understand and consider the microbial aspect of the ATU as well as the equipment functions. A biological treatment system operates as a result of the equipment assisting the microbial population in the stabilization, breakdown and removal of the incoming organic matter. Therefore, when faced with start up, recover, achieving stable operation, and maintenance you should consider the factors that effect the systems biology. Understanding on-site wastewater system biology is essential to your ability to service and address systems performance and system problems.

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Heterotrophic Bacteria They are the primary catalyst in an ATU’s and are necessary for good settling

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Nitrification:

What you should know   

 

Ammonia removal termed “Nitrification” A Different Biological Process Requires KH alkalinity -7.1 lb per # ammonia oxidized Ammonia to  Nitrite to  Nitrate Denitrification = Nitrate to  Nitrogen Gas

Reviewed Later !

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Ideal Conditions

For Aerobic Systems  Microbes  





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pH – 6.9 to 8.5  7.5 opt Macro & Micro nutrients -> C. N. P  100 - 5 – 1, i.e. Ammonia Nitrogen (NH3 (N) – 1/mg/l, Ortho-Phosphate (PO4) – 1 mg/l Temperature (F) 55-110  opt 70/85 (F) Steady food supply  F to M Why some on-site systems fail

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ATU & System A Biological System: Micro-Organisms from Start to Finish, Aerobic, Anaerobic, Anoxic

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Time is a key factor in wastewater Kinetic Rate 

Problem system, check out the influent waste, what does it contain?



Difficult and slow to degrade constituents (food); such as, protein, fat, greases, long chain fatty acids and cellulose require longer periods for removal and can build up on the cell.



Kinetic rate, refers to how difficult a compound is to degrade in terms of Time! “Time is the primary factor in wastewater loading rate vs. removal”.



Cell loading  LOOK OUT! 1/27/2015

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Chemical Impact OH…YOUR KILLING ME!

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Chemical Cleaning Compounds Washing Detergents Drain Cleaners Toilet Bowl Cleaners (back of bowl additives) Sanitizers Medication pH of water Tissue Water softener – “Oh, that word” - we will come back to this one!

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pH in wastewater Oh…You’re Killing Me!           

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Oven Cleaner Household Ammonia Milk of magnesia Chlorine bleach Softener discharge Human blood Milk Coffee Soft drink Aspirin Vinegar Why some on-site systems fail

= 13.8 = 11.0 = 10.5 = 9.5 = 8.0 = 7.3 = 6.5 = 5.5 = 3.5 = 2.9 = 2.8 77

Water Softeners   







Softener backwash contains no organic matter (BOD) and is not considered a biological effluent Not a microbial contaminant, no coli form, does not require biological treatment. Service companies, and aerobic equipment mfg (ATU) report reduced scum layers, less distinguishable clear zone, dispersed bulk liquid, and some variance in bio mass color Sodium salts disperses clay particles and reduces soil permeability. Sodium is used in land fill liners to control leaching Sodium salts are known to restrict the growth of all turf and crops, and softened water is not recommended for lawns by softener companies Sodium salts are used for food preservation to control microbial growth  I know what I think! 1/27/2015

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What To Do           

Check if all equipment is working D.O.-> requires 2 to 5/ppm pH, 6.9 to 8.4, 7.5 ideal, adjust with S/B if necessary Color, light tan or brown, settling, (black run for help) Odor, earth like Check intrusion & leaking toilets -1,440 minutes in a day Check for medical problems Check and advise on down the drain disposal Check water softener back wash rates and times Advise to spread wash over the week Bio Augment for improved system performance 1/27/2015

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Modern Microbiology & Bio Augmentation 







Biotechnology isolates and produces cultures for medical, commercial, industrial and consumers use that only a few decades ago was considered impossible. Bio Augmentation and bio remediation are accepted practices by the EPA, and used in water restoration and soil remediation worldwide. Numerous municipalities and industries utilize bio augmentation in collections systems and WW facilities Industry uses bio augmentation to remove target compounds from sludge and effluent waters, achieve nitrification and denitrification and for reduced nutrients in effluent.

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Improving & Maintaining System Biology 



With increasing concern for the environment and changing wastewater treatment standards, bio augmentation is a tool to consider regarding efforts to meet stringent effluent requirements. With a better understanding ATU system biology, and an improved knowledge of modern bio augmentation benefits could be of significant value in meeting new effluent standards.

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Advantages of Bio-Augmentation Receptive sites- cell loading

Augmentation value           

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Rapid start up Rapid recovery Target compound removal Stability Nitrification Denitrification Solids reduction Absorption field enhancement Absorption field recovery Odor abatement Nutrient reduction

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Modern Microbiology Not all the same Cultures differ 

Bio augmentation with vegetative strains having facultative and anaerobic capability, nitrogen fixation, and mechanisms for odor control. Offer significant improvements to on site wastewater processes.

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Advantages    

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Rapid start up Recovery & Stability Improved settling Removal of target compounds Sludge reduction Nitrification & Denitrification Reduced BOD, COD, TSS, & FOG in final effluent 83

Bio Augmentation Systems receiving slow to degrade substrate to include, protein, FOG and fatty acids and chemical constituents often have problems resulting in;  Oily Surface films  Side wall build-up  Grease balls  Foam  Pass through materials  Increased sludge volume  Low DO 1/27/2015 Why some on-site systems fail 84

Biological treatment Enhanced performance 

   

Poor effluent quality

6 lagoons,1 million gallons each 200.000 gal flow 12 week recovery 203 gallons used Improvements in 5 day’s, odor, reduced surface grease, increased DO, reduced FOG & BOD in effluent, achieved permit

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Augmentation results 

After first six weeks FOG eliminated from surface  Sludge lowered by 26% in inoculated train vs. control train  Effluent BOD & COD reduced 



After 12 weeks 

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Some decline in sludge reduction in control but it was determined that control was being inoculated with organisms grown in test train via supernatant from presses and digester

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Poultry slaughter house activated sludge wastewater system        

Significant and rapid improvements Reduced BOD, COD, FOG Reduced sludge Surface grease and films removed DO improved Improved settling Reduced odor Achieved discharge requirements

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Six stage lagoon series Unable to meet discharge

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Bio augmentation used, Changes nature of grease within two weeks

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Augmentation 6 Lagoon Series, pictures after 6 weeks of biological treatment

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All lagoons saw improvements Final lagoon

Final stage    

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Removed surface solids Reduced bottom solids Eliminated odor Reduced BOD, COD, FOG Improved DO Achieved permit

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Benefits of bio augmentation in a poultry slaughter house wastewater process

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Grease degradation is an important factor in any wastewater system 





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Good Morning Doug. I would like to inform you that we are very happy with the results of your product in our septic tanks. We had a 10” crust on each tank and now the crusts are completely gone. Thanks so much. One question, will the product be as successful breaking down grease in a grease trap or grease build up along a pipe? I thought the bacteria will continue to go to work in the septic tank once they leave the grease trap. Please let me know your thoughts. Regards, Brian Norg Please visit our new website www.naturefresh.ca

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Collection system treatment  

Line bio augmentation is effective The series of pictures show the buildup near the end of a 400foot run, the grease buildup is significant prior to treatment on 8/29/2013. Following treatments the grease has cleared and the camera was now able to run all the way through to the next manhole on 3/4/2014

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Deposition forms as water level declines After 5 months

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Start of treatment

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After 5 months

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Different levels of grease deposition Microbes for films

Function as biogenerators 

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It should be noted the treatment and accompanying results of all of the lines pictured, was introduced into one manhole 700 feet from the lift station. The was treated once per week in this location. All this was done with 10 gallons of Microbe Lift IND. We are looking forward to the pictures after the next two months when we are adding sludge away in addition to the IND.

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Entire collection system problems resolved Removes deposits

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Control H2S and corrosion

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THANK YOU HAVE A GREAT DAY Douglas A. Dent

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