8/9/2019 OilGrease English[3]

1/16

BioBio--Remediation of Fat, OilRemediation of Fat, Oil

and Grease Using Enzymeand Grease Using Enzyme

Dr.Dr.

NianNian

SheShe

Seattle Environmental ScienceSeattle Environmental Science

and Technologyand Technology

Nian.She@Envsctech.comNian.She@Envsctech.com

8/9/2019 OilGrease English[3]

2/16

Treat Wastewater of Oil and GreaseTreat Wastewater of Oil and Grease

with Seattle Environmental Science andwith Seattle Environmental Science andTechnologyTechnologys Unique DEARs Unique DEAR EnzymesEnzymes

DEARDEAR Enzyme technology is the product of a proprietaryEnzyme technology is the product of a proprietary

fermentation process that yields thousands of unique nonfermentation process that yields thousands of unique non--bacterialbacterial

enzymes, each a specialist in breaking down a specific type ofenzymes, each a specialist in breaking down a specific type of

contaminant. This broadcontaminant. This broad--based enzyme blend simultaneouslybased enzyme blend simultaneouslytargets the degradation of proteins, fats, oils, hydrocarbons,targets the degradation of proteins, fats, oils, hydrocarbons,

grease, lipids, cellulose, and sugars. To further improvegrease, lipids, cellulose, and sugars. To further improve

performance, carefully selected nutrients and surfactants are adperformance, carefully selected nutrients and surfactants are addedded

to enhance biological activity and speed the breakdown of organito enhance biological activity and speed the breakdown of organicccontaminants. Produced in a foodcontaminants. Produced in a food--grade facility under rigorousgrade facility under rigorous

quality control standards, DEARquality control standards, DEAR Enzymes Technology is readilyEnzymes Technology is readily

biodegradable and among the most concentrated and powerfulbiodegradable and among the most concentrated and powerful

enzyme formulations available today.enzyme formulations available today.

8/9/2019 OilGrease English[3]

3/16

Seattle Environmental Science andSeattle Environmental Science and

TechnologyTechnologys Approachs Approach

Seattle Environmental Science and Technologys Products

and Solutions are based on the approach that eliminatingthe source of the problem is more efficient and economicalthan continually treating its symptoms. We approach everychallenge as an opportunity to combine our knowledge of

natural processes with our technology and our customers

experience in their specific field. We work together todetermine the root cause of the problem and then develop

an eco-friendly solution that resolves the underlyingproblem and thereby removes the symptoms.

8/9/2019 OilGrease English[3]

4/16

A Problem for a Wastewater Utility inA Problem for a Wastewater Utility in

a Middle East Countrya Middle East Country Tanker trucks bring 50,000mTanker trucks bring 50,000m33 raw sewage per dayraw sewage per day

On site S.T.P capacity is 30,000m3 per dayOn site S.T.P capacity is 30,000m3 per day High load gives poor performanceHigh load gives poor performance

Natural water evaporation is very low due to an oilNatural water evaporation is very low due to an oil--slickslick

Oils and grease from the sewageOils and grease from the sewage Good breading environment for mosquito and other insectsGood breading environment for mosquito and other insects

The lake is spayed with oil based insecticides, adding to the prThe lake is spayed with oil based insecticides, adding to the problemoblem

Volume of the lake increases every dayVolume of the lake increases every day High costs to keep the water from overflowing, barriers are beinHigh costs to keep the water from overflowing, barriers are being builtg built

And of course; Odor, Environment and generalAnd of course; Odor, Environment and general

unpleasantnessunpleasantness

8/9/2019 OilGrease English[3]

5/16

50,000m50,000m

33

/Day Raw Sewage/Day Raw Sewage

8/9/2019 OilGrease English[3]

6/16

High Water level

Oil-Slick

8/9/2019 OilGrease English[3]

7/16

The GoalThe Goal

Break Up and Remove OilBreak Up and Remove Oil--SlickSlickIncreased Evaporation, lower the risk for lakeIncreased Evaporation, lower the risk for lakeoverflowingoverflowing

Our SolutionOur SolutionA holistic, all natural, long term proposal, providingA holistic, all natural, long term proposal, providing

the end user with a solution to solve the primarythe end user with a solution to solve the primarygoal of removing the surface oilgoal of removing the surface oil--slick, plus muchslick, plus much

more!more!

8/9/2019 OilGrease English[3]

8/16

The Trial, The LakeThe Trial, The Lake

Before

Application

Hole in the

Ground

6 x 6 x 1.5m

45,000 liter

raw sewage

8/9/2019 OilGrease English[3]

9/16

The Trial, The LakeThe Trial, The Lake

800 mL of DEAR Enzymes

24 hours later

8/9/2019 OilGrease English[3]

10/16

The Trial, BucketThe Trial, Bucket

8/9/2019 OilGrease English[3]

11/16

The Trial, BucketThe Trial, Bucket

24 hours after

application

Diesel film broken up

8/9/2019 OilGrease English[3]

12/16

ApplicationsApplications

No. 1; Spray the Lake for immediate actionNo. 1; Spray the Lake for immediate action

2525 ppmppm of lake volume to be sprayed via airplane orof lake volume to be sprayed via airplane orboatboat

Applied over five equal applications, 2 weeks apartApplied over five equal applications, 2 weeks apart

Swift breakup and removal of oilSwift breakup and removal of oil--slickslick

Enables water evaporationEnables water evaporation

Early positive signs in the S.T.PEarly positive signs in the S.T.P Removes surface tensionRemoves surface tension

8/9/2019 OilGrease English[3]

13/16

ApplicationsApplications

No. 2; 3000 Tanker Trucks dailyNo. 2; 3000 Tanker Trucks daily

1010 ppmppm of Tanker Truck volume, as truck leaves theof Tanker Truck volume, as truck leaves thedump sitedump site

Reduced smell while collection of sewageReduced smell while collection of sewage

Early agitation and aeration while in the tankEarly agitation and aeration while in the tank

All enzymes will endAll enzymes will end--up in the lake, and willup in the lake, and will

eventually give the same actions and results aseventually give the same actions and results asapplication No.1application No.1

8/9/2019 OilGrease English[3]

14/16

ApplicationsApplications

No. 3; At S.T.P Head WorksNo. 3; At S.T.P Head Works

Initially 4Initially 4 ppmppm of total flowof total flow

Reduced to 2Reduced to 2--44 ppmppm of total flow after 2of total flow after 2

monthsmonths If the lake is sprayed with enzymes thisIf the lake is sprayed with enzymes this

application wont be necessaryapplication wont be necessary

8/9/2019 OilGrease English[3]

15/16

Our SuggestionOur Suggestion

Start with 2 out of 3Start with 2 out of 31. Dump Truck Application for a period of three (3) months

45,000 Lt enzymes

All enzymes will end up in the lake

Will reduce odor in and around the dump trucks

Will cleanup and reduce environmental impact at the

dump sitePossibility to judge if lake spray is necessary

2. S.T.P Head Works Application for a period of three (3)months

10,800 Lt enzymes

All enzymes will assist in the overall performance of theS.T.P

Will reduce odor of out-flow, used for irrigation

8/9/2019 OilGrease English[3]

16/16

Added AdvantagesAdded Advantages

1.Odor reduction1.Odor reduction

2.Removal of water surface tension2.Removal of water surface tensionLarva will sink, reduced insect breadingLarva will sink, reduced insect breading

3.The enzymes will effect adult mosquitoes, by3.The enzymes will effect adult mosquitoes, by

effecting the Chitin, a wax coating protecting theeffecting the Chitin, a wax coating protecting theinsects skeletoninsects skeleton

IGR Effect, Insect Growth RegulationIGR Effect, Insect Growth Regulation

4.Improved water quality of out4.Improved water quality of out--flow from S.T.Pflow from S.T.P

Water can be used for irrigation on a broader baseWater can be used for irrigation on a broader base