Design Considerations of High Strength Wastewater Treatment Systems

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Dominick Kenneth Byrd
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1 Design Considerations of High Strength Wastewater Treatment Systems

2 What Is High Strength Waste? High BOD High TSS High Fat, Oil and Grease (FOG) High COD High Nitrogen Anything NOT residential waste IS high strength. Sometimes, even residential waste is high strength.

3 NSF Definition of Residential Strength Concentrations BOD 5 = 100 to 300 mg/l TSS = 100 to 250 mg/l TKN = 35 to 70 mg/l FOG 25 mg/l (not NSF)

4 High Strength Commercial

5 Other High Strength Applications

6 Other Examples Laundromats (Lint) Bakeries (Flour) Senior Communities (Medications) Convenience Store (Soda syrup)

7 How Will I Know? Influent Laboratory Analysis Experience Common Sense

8 Every Application is Different Texas Restaurant Wastewater Analysis

9 Many Factors can affect the strength of wastewater. Texas Restaurant Wastewater Analysis

11 Design Considerations Source of the Wastewater Facility Practices Flow Patterns (e.g. churches) Effluent Requirements Operational/Management Resources

12 What About FOG? What is a FAT? (animal) What is an OIL? (vegetable) What is a GREASE? (high-molecular weight fatty acid) Grease Trap Vs. Grease Interceptor, Or Both?

http://www.mayerbrosprecast.com/images/greasetrap.

13 Grease Traps and Interceptors Many Different Types Should be sized properly Maintenance is Key-pumping

14 SETTLING TANKS Allows for settling of solids, and some attenuation. Tank sizes should be sized for hours of retention time. Configured as first compartment of a two compartment tank or a separate tank altogether. Can be multiple tanks rather than one large tank.

15 FLOW EQUALIZATION Sized on the total flow to be equalized Timed dosed pumping is required Aeration may be required

16 Timed Dosed Flow Equalization

17 Screens and Filters Many different types

18 Toxic Chemicals (for wastewater treatment) Homes: Liquid Fabric Softeners Commercial Facilities: Quats, floor strippers (Zinc), disinfectants or sanitizers Pesticides Acid/Caustic Materials

19 Typical Process Design Example: Restaurant Grease Trap with 1 times daily flow Settling with ½ to 1 times the daily flow SaniTEE screens in the settling tank Flow Equalization if required HighStrengthFAST with plenty of settling (AVOID USING MINIMUMS IF POSSIBLE)

20 BOD 5 Calculation BOD 5 Calculation Must convert BOD 5 influent from mg/l to lbs. /day. Example: Restaurant. Flow 600 gpd, BOD = 800 mg/l. Calculation: = flow (gpd) x 8.34 x BOD5 (mg/l) = BOD 5 (lbs/day) 1,000,000 = 600 gpd x 8.34 x 800 mg/l = 4.0 (lbs/day) 1,000,000

21 MA Title 5 Program First N reduction program Established in 1994 Over 20 years One of a few programs that require effluent sampling Due to the longevity of this program there is an abundance of field data

22 Springhouse Pond Senior Residential Community Started up May 2001 Design Flow 6,630 GPD 39 Condo Units of 1-2 Bedrooms Provisional with TN Limit of 25 mg/l MicroFAST 9.0

23 Springhouse Pond

24 Springhouse Pond Influent BOD 5 TSS TKN Samples Collected Maximum Value 1,300 mg/l 3,520 mg/l 185 mg/l Minimum Value 15 mg/l 6 mg/l 6 mg/l Average 174 mg/l 307 mg/l 47 mg/l Median 92 mg/l 53 mg/l 48 mg/l

25 Springhouse Pond Effluent BOD 5 CBOD 5 TSS TN Samples Collected Maximum Value Minimum Value Average Median

26 Luciano s s Lake Pearl Function Hall and Restaurant in Wrentham Design Flow 6,600 GPD Start Up March 2006 HighStrengthFAST 9.0 followed by MCF 9.0 General Use with TN limit of 19 mg/l

27 Luciano s Lake Pearl

28 Lake Pearl Influent BOD 5 TSS TKN Samples Collected Maximum Value 10,180 mg/l 7,080 mg/l 199 mg/l Minimum Value 79 mg/l 4 mg/l 3 mg/l Average 1004 mg/l 604 mg/l 49 mg/l Median 640 mg/l 188 mg/l 36 mg/l

29 Lake Pearl Effluent BOD 5 TSS TN Samples Collected Maximum Value 520 mg/l 59 mg/l 22 mg/l Minimum Value 2 mg/l 4 mg/l 2 mg/l Average 23 mg/l 11 mg/l 9 mg/l Median 4 mg/l 5 mg/l 7 mg/l

30 Friendly s Restaurant Restaurant in Sudbury Design Flow = 2450 GPD Start Up September 2009 Provisional with TN limit of 25 mg/l HighStrengthFAST 9.0

31 Friendly s Restaurant

32 Friendly s Restaurant Influent BOD 5 TSS TKN Samples Collected Maximum Value 5,180 mg/l 1,630 mg/l 40 mg/l Minimum Value 140 mg/l 63 mg/l 14 mg/l Average 1,381 mg/l 314 mg/l 19 mg/l Median 570 mg/l 136 mg/l 15 mg/l

33 Friendly s Restaurant Effluent CBOD 5 TSS TN Samples Collected Maximum Value 89 mg/l 190 mg/l 38 mg/l Minimum Value 4 mg/l 4 mg/l 1mg/l Average 14 mg/l 25 mg/l 7 mg/l Median 6 mg/l 11 mg/l 4 mg/l

34 Ayer Road Offices Office Building Complex in Harvard Design Flow = 3,564 GPD Start Up October 2010 Provisional with a TN Limit of 25 mg/l MicroFAST 4.5 followed by NitriFAST 4.5 followed by ABC-N 3.0

35 Ayer Road Offices

36 Ayer Road Offices Influent BOD 5 TSS TKN Samples Collected Maximum Value 3,760 mg/l 4,960 mg/l 259 mg/l Minimum Value 8 mg/l 10 mg/l 9 mg/l Average 243 mg/l 338 mg/l 69 mg/l Median 38 mg/l 46 mg/l 61 mg/l

37 Ayer Road Offices Effluent BOD 5 TSS TN Samples Collected Maximum Value 23 mg/l 28 mg/l 39 mg/l Minimum Value 4 mg/l 1 mg/l 3 mg/l Average 6 mg/l 5 mg/l 12 mg/l Median 4 mg/l 4 mg/l 10 mg/l

38 Chapoquoit Grill Restaurant in West Falmouth Design Flow = 3,940 GPD Start Up January 2006 General Use for BOD/TSS only HighStrengthFAST 9.0

39 Chapoquoit Grill

40 Chapoquoit Grill Effluent BOD 5 TSS Samples Collected Maximum Value Minimum Value 6 4 Average Median 10 12

41 Questions

42 Contact Information Jim Bell Sheryl Ervin Bio-Microbics, Inc. (800)

COURSE # 343 UNIT # 1: ADVANTEX WASTEWATER TREATMENT SYSTEM. What you will learn in this lesson. Introduction to the listing

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