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  • 1273 North Service Road, E. F2 Oakville, ON, L6H 1A7

    Tel: 905 829 1749 Fax: 905 829 5859

    Report on the Use of SciCorp BIOLOGIC® SR2

    Activated Sludge Wastewater Treatment Plant Flow of 2.9 MGD (11,000 m3/D)

    Prepared by:

    Maat Environmental Engineering Corp. 1273 North Service Road East, Unit F2

    Oakville, Ontario L6H 1A7

    March, 2014

  • Report on the Use of BIOLOGIC SR2 at P a g e | 2 Maple Lodge Farms Activated Sludge Wastewater Treatment Plant

    Table of Contents

    1.0 Project Background .............................................................................................................................................................. 3

    2.0 Wastewater Treatment Process Description ............................................................................................................. 3

    2.1 MLF WWTP Configuration ............................................................................................................................................ 3

    2.2 Plant Operation .................................................................................................................................................................. 5

    2.3 Raw Wastewater Characteristics ............................................................................................................................... 5

    3.0 Plant Operating Review, Product Dosing and Performance Assessment ....................................................... 5

    3.1 MLF WWTP Improvement Targets ............................................................................................................................ 5

    3.2 Product Dose Determination ....................................................................................................................................... 6

    3.3 Plant Performance Assessment................................................................................................................................... 6

    4.0 Treatment Performance Results ..................................................................................................................................... 7

    4.1 Aeration Energy Savings ................................................................................................................................................ 8

    4.2 Sludge Reduction .............................................................................................................................................................. 8

    4.3 General Operating Conditions (Odour, Turbidity, Plant Upset) ................................................................... 9

    5.0 Cost Benefit Analysis ......................................................................................................................................................... 10

    6.0 How BIOLOGIC® SR2 Impacts Biological Treatment of Wastewater .......................................................... 11

    6.1 Bacteria in Wastewater ............................................................................................................................................... 11

    6.2 Micronutrient Requirements .................................................................................................................................... 12

    7.0 Conclusions ........................................................................................................................................................................... 14

    8.0 References ............................................................................................................................................................................. 15

  • Report on the Use of BIOLOGIC SR2 at P a g e | 3 Maple Lodge Farms Activated Sludge Wastewater Treatment Plant

    1.0 Project Background The purpose of this paper is to document the finding of an in depth study of the effectiveness of the use of a micronutrient known as BIOLOGIC® SR2 to a full scale activated wastewater treatment plant (WWTP) suffering from odour issues, sludge accumulation, and poor effluent quality. BIOLOGIC® SR2 is a plant-based organic micronutrient that provides odor control and serves as a bio-stimulant for the treatment of biological waste and wastewater. BIOLOGIC® SR2 is manufactured by SciCorp International Corp. in Barrie, ON. The WWTP where the study was conducted is located in Mississauga, Ontario and is owned and operated by Maple Lodge Foods (MLF). The MLF WWTP consists of a conventional activated sludge treatment facility that treats the wastewater flows generated within the poultry processing plant. The plant was designed to treat an average wastewater flow of 2.9 MGD (11,000 m3/day). SciCorp International Corp. of Barrie, Ontario provided the BIOLOGIC® SR2 product for the study, which was purchased by the WWTP owner. The plant manager made the choice to begin using BIOLOGIC® SR2 in January 2013 in order to reduce plant electrical and sludge handling costs and to address odour and effluent quality issues. Comparison analysis of daily plant operating data from April to June of 2012 (when the product was not used) and from April to June of 2013 (when the product was used) was carried out to assess operational cost savings and improvements to operational efficiency. A summary of this in depth cost benefit analysis of the benefit of adding BIOLOGIC® SR2 is included.

    2.0 Wastewater Treatment Process Description

    2.1 MLF WWTP Configuration The existing WWTP consists of screens, a dissolved air flotation system, an aeration basin with surface aerators, secondary clarifiers and a polishing aerated lagoon followed by settling lagoon and two storage ponds. The treated effluent is then discharged to an adjacent watercourse. The waste sludge from the secondary clarifier is further digested through a two-cell aerobic sludge digestion system. The digested sludge is then pumped to a belt filter press where it is dewatered for further disposal. The MLF WWTP model was constructed in GPS-X™ version 6.2. The GPS-X plant layout is presented below in Figure 2.1.

  • Figure 2.1 - MLF Wastewater Treatment Plant Configuration

  • 2.2 Plant Operation The MLF WWTP receives 95% of its flow from Monday to Friday, during the period that the chicken processing facility is in operation. During weekends hydraulic flow and organic load drop off dramatically. This significant drop off in flow during the weekend has historically caused plant upsets and poor operating conditions at the commencement of flows during weekly startup of plant operations. Effluent from the aerobic plant is directed to two (2) polishing lagoons for flow attenuation prior to discharge to a receiving stream that has limited assimilative capacity.

    2.3 Raw Wastewater Characteristics The WWTP raw influent has its characteristics as shown in the table below.

    Table 2.1 Raw Wastewater Characteristics at MLF WWTP

    Parameters Values Unit

    Flow 11,000 m3/d

    2.9 MGD

    BOD 400 - 1,180 mg/L

    Population Equivalent 75,000 - 216,000 p.e.

    TSS 100 - 800 mg/L

    FOG 20 - 200 mg/L

    Temp. 10 - 27 °C

    Malodor Noticeable n/a

    3.0 Plant Operating Review, Product Dosing and Performance Assessment

    3.1 MLF WWTP Improvement Targets The MLF WWTP was motivated to implement the use of the BIOLOGIC® SR2 product because it was seeking to improve the performance of the plant in the following ways:

     Prevent upset of the plant under various loading conditions

     Improve turbidity of discharge effluent

     Reduce energy costs related to aeration

     Reduce sludge handling and disposal costs

     Reduce odour and foaming throughout the plant

  • Report on the Use of BIOLOGIC SR2 at P a g e | 6 Maple Lodge Farms Activated Sludge Wastewater Treatment Plant

    3.2 Product Dose Determination The dose rate of the BIOLOGIC® SR2 product was determined based on the average hydraulic flow rate and the average BOD loading. The product dose rate was calculated to be 35 L of product per day. The product was diluted at a ratio of 10:1 (water to product) and added to the system at the wet well pumping station in the processing plant. 3.3 Plant Performance Assessment Product use at the plant was begun in January 2013. After a three month operating period where anecdotal observations by the plant operator showed a marked improvement in the plant operating performance, a decision was made to carry out an in depth data analysis to assess the impact of the product on plant operations. As result a three month analysis of operating data was carried out between April and June of 2013. In order to measure the impacts of the product use, the plant data from the period of April – June 2012 (when product was not used at the plant) to April – June of 2013 (when the product was in use). Daily operating data that was obtained from multiple locations in the plant (influent, clarifiers, lagoon, discharge) included the parameters listed below.  Flow  Temperature  Oxygen uptake  Sludge production  FOG loading  Total phosphorus  Alum/caustic use  Sludge settling  Nitrate/Nitrite  BOD  MLSS  Ecoli  TSS  MLVSS  Daily Aerator Hp  pH  DO (min/max)  TKN

    A detailed