Waste Water Treatment Plants

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BioTreat acts on both aerobic and anaerobic bacteria as well as facultative bacteria to enhance their metabolism and, in simple but direct terms, increase the amount of work a given amount of bacteria can perform. It does not contain bacteria, enzymes or macro-nutrients.

The purpose of BioTreat is to increase the ENR (enriched nutrient removal) profile of the plant. This can be achieved by BioTreat increasing the rate of BOD reduction and increasing the bacterial activity in nitrification and denitrification. Nitrification and denitrification occur after substantial BOD reduction has occurred.

The first injection point for BioTreat is the RAS line (Secondary Clarifier to anoxic/oxic tanks); the next injection point would be the process return line from the oxic to anoxic tanks. The last point of injection would be prior to the trickling filter. The multiple injection points do not mean that more BioTreat would be used but are selected to help optimize the use of BioTreat.

The bacterial activity in the TF is considered to be denitrification and BOD reduction. If this is the case then there should be an injection point just prior to the TF by-pass line as mentioned above.

Benefit areas:

These are the areas of the WWTP that will see improved performance through the use of BioTreat:

· Rate of BOD reduction. If the plant’s reduction of BOD is very good and not likely to be improved, then the reduction should occur quicker which in turn will benefit nitration / denitrification.

· Nitrification / denitrification. These bacterial processes will be directly enhanced through stimulation of the bacteria involved (nitrobacter and nitrosomas) and by a quicker reduction of BOD as described previously.

· Sludge reduction. In all BioTreat applications the amount of sludge has been reduced.

· Dewatering Polymer costs. BioTreat promotes much better settleability which makes dewatering simpler reducing the amount of dewatering polymer needed as well as the grade of dewatering polymer.

· Misc. benefits. The amount of recycle will likely be decreased with on-going BioTreat usage. Better settling (reduced suspended solids) makes RAS more effective. Sludge reduction increases the active bacterial return in RAS movement.

BioTreat Injection:

· The main injection point should be the RAS line. The amount injected should be about .5 ppm of flow rate of the primary effluent.

· Injection into process return line from the oxic tank(s) to anoxic should be about .2 ppm of PE flow.

· The last injection point should be into the PE line prior to the TF by-pass line at about .5 ppm of PE flow.

BioTreat Startup:

The PE line should be injected at a rate of about 3-3.5 ppm until the (calculated) hydraulic loading of the system is about 2-2.25 ppm. Then the above BioTreat injection rates should be employed. During the high injection rate the DO values of aerobic sections should be closely monitored because as BioTreat begins to have an effect there is an initial DO drop. This will recover but most systems will require more oxygen (aeration) than without BioTreat. This is because the bacteria are doing more work which requires more oxygen.

BioTreat the first couple of weeks:

After the plant has run about 10 days to two weeks on BioTreat, it’s time to look to fine-tuning. Areas that have shown improvement should have the addition rate reduced and areas not showing much improvement should have the addition rate increased. It is best to do this one section at a time; allow for stabilization; then move to a next section.

BioTreat Longer Term:

As BioTreat infiltrates the system including the primary clarifier and adjustments are made the full benefits of BioTreat usage will be apparent. The amount of BioTreat consumed by the system will stabilize and be predictable. BioTreat usage has ranged from .25 ppm based on influent in a simple industrial aeration plant to 5 ppm in an anaerobic digester.

Summary/Recommendations:

BioTreat is a bacteria stimulation product and its use/application should be thought of along the lines of where is the most bacterial activity (aerobic/anaerobic) going to occur and need to occur. Points ahead of this would be injection points for BioTreat. BioTreat acts much like a catalyst in that it isn’t consumed in stimulating bacteria but does get diluted out of the system and does biodegrade.

The injections points given are chosen on the basis of best points for BioTreat to be introduced into the system, which are not necessarily the most practical points for the plant. Knowledge of the plant and how BioTreat works principles should be used to establish practical and workable injection points. Metering pumps will be needed as BioTreat needs to be continually injected and not dosed in a once or twice a day ‘dump into the system’.

The economics of BioTreat use vary from plant to plant. In certain cases, for example, the existing plant needs to function as an ENR facility which typically means more tanks and storage. On a variable cost basis the economic benefits of BioTreat are given above. On a capitalization basis – plant expansion – BioTreat would be an easy choice. BioTreat finds its best applications in plants that at least in the short term are ‘non-expandable’ but need to perform to more stringent standards than they were originally designed to meet.

BioTreat use is an optimization process. The plant operators/management as they become familiar with BioTreat by using BioTreat can see where dosing can be changed, decreased/increased or eliminated.

BioTreat increases plant efficiency but does change the biochemistry of a plant, its bacteria or general operation. It will not cause oxygen to ‘appear’. Oxygen, as an example, needs to be supplied to the plant by aeration in an amount to achieve the desired results.

The engineering approach to some plants is to add capacity – more anoxic/oxic zones, better aeration, etc. However, the BioTreat approach is to make the existing system work better.

A recommendation we sometimes offer is to consider some degree of treatment occurring at the lift stations. BioTreatPlus is a blend of BioTreat and fat, oil and grease (FOG) enzymes. The idea here is to break FOG into smaller molecules (which is the action of an enzyme on a substrate). The smaller molecules would have a similar BOD loading but be easier and quicker for the bacteria to process. The anaerobic profile of the in-bound waste would be enhanced which could increase denitrification in the TF. A FOG only enzyme could alternately be supplied. The concept here is to use the in-bound sewer lines as partial processing tanks and have the wastewater to a degree advanced in its treatment process.

STORAGE & HANDLING
DO NOT FREEZE! Store in a cool dry location.

SAFETY
The materials used in the production of BioTreat and BioTreat Plus are derived from naturally occurring and sustainable sources. BioTreat products are environmentally friendly, biodegradable and safe for animals, plants and humans.

COMPLIANCE
Fully complies with EPA Toxic Substance Control Act (TSCA) and the rules, orders and regulations promulgated there under including:
a) Sections 4, 5, 6 & 7; Title 40 Chapter 1, 707.20 thru 707.75;
b) 40 CFR Sections 704.3. 710.2(e) and 720.3(c); and
c) Sections 5 and 13, reference 42FR64583
d) Does not contain marine pollutants as defined in 49 CFR 171.8.

AquaPro Solutions realizes that each waste water treatment plant is unique.  Therefore, we ask you to contact us directly to discuss your plant’s particular type, configuration and areas requiring enhancement or optimization.  Tollfree from the U.S. and Canada: 1-828-255-0772.