discharge permit Articles

  • Case Study - Groundwater Discharge Permit - Plymouth, Massachusetts

    The process of obtaining a groundwater discharge permit for a subdivision scale septic absorption system was faciliated by using the advanced GIS features within EnviroInsite. Geologic features were downloaded and presented at the site scale along with the subdivision boundary and potential downgradient receptors. A cross-section was created showing the detailed soil descriptions, water levels ...


    By EI LLC

  • A seasonal waste load allocation policy in an integrated discharge permit and reclaimed water market

    This paper intends to assess the seasonal demand for nitrogen discharge permits and its influence on waste load allocation (WLA) strategies. For this purpose, the Sefidrud catchment is analyzed, where the agricultural demands for discharge permits and reclaimed water (RW) are significant and also intermittent. The paper discusses using variable total maximum daily loads and a transferable ...


    By IWA Publishing

  • Ceramic Polishing

    A company was using several chemistries to remove the total suspended solids (TSS) from their wastewater. The facility manufactures stainless steel surgical instruments. The wastewater is generated from the polishing/deburring of these instruments using an aluminum/ceramic polishing media. The jar tests shown are from the addition of the Floccin-H to the wastewater and moderate mixing. The TSS ...


    By Integrated Engineers Inc.

  • Phosphorus Compliance (ID1592) - Case study

    Location: Village of North Branch, Michigan Problem: Phosphorous levels were too high Solution: SolarBee SB4000v12 mixer with chemical injection pump in pond #2; SB1250v12 mixer in pond #1 Result: Mixers reduce phosphorous and village meets discharge permit level "Thumbs up" for ...


    By Medora Corporation

  • Selenium Removal

    The oil refinery was in search of a feasible solution for the removal of selenium. Discharge permit changes by the EPA require a reduction of 50% from current levels. Integrated Engineers, Inc. was given an opportunity to perform a feasibility test to determine a treatment process as well as estimated operational costs. The best process was to adjust the pH from 7.0 to 10.0 using caustic, ...


    By Integrated Engineers Inc.

  • Cloth Media Filtration Technology Meets Very Low Total Phosphorus Levels in Existing WWTPS.

    ABSTRACT Alexandria (Minnesota) WWTP and Cayuga Heights (New York) WWTP are both facing new discharge permits that include more stringent total phosphorus (TP) levels of 0.3 mg/L and 0.2 mg/L, respectively. An AquaDisk® cloth media filter pilot unit was brought to these sites for a period of three (3) weeks each. Results of the two (2) pilot studies demonstrate that the cloth media ...

  • Ice Cream

    Problem: This ice cream maker, established almost 70 years ago, is one of the largest premium ice cream companies in the USA. The plant discharged its wastewater to the local sanitation plant until 1987, at which time heavy restrictions were placed on their discharge permit. The plant manager hired a consulting firm, and together they proceeded to investigate wastewater treatment systems ...


    By HydroCal Inc.

  • Lifting column facilitates dryer installation and handling - - Case Study

    Problems often occur when new production equipment has to be installed in existing buildings. The old rooms are not high enough und opening the ceiling at the desired location may be impossible or too complicated. Imagine installing in an old production building a centrifuge on top of a cone dryer which is to be discharged into drums or containers. The solution may be an AVA cone dryer on a ...


    By AVA GmbH u. Co. KG

  • Surface water quality management using an integrated discharge permit and the reclaimed water market

    Water quality trading is a sustainable framework for surface water quality management. It uses discharge permits to reduce the total treatment costs. For example, the case of Gharesoo River in Iran shows that the nitrogen permit market between point and non-point sources is 37% more economical than the command and control framework. Nevertheless, the cost saving may be reduced to ...


    By IWA Publishing

  • What are the treatment options for landfill leachate?

    New contributor to Water/Waste Processing aims to answer readers’ most pressing questions It’s said the United States has 1,654 landfills, handling more than 250-million tons of trash each year. One Washington landfill covers a 2,545-acre area, has a 120-million-ton capacity and a 40-year expected trash-receiving life. The facility, the Republic ...

  • A technical guide to complying with Federal SPCC Regulations

    Let’s start by clarifying what SPCC is not since SPCC does overlap other Federal and State environmental regulations. SPCC is not: NPDES – Permits under NPDES, such as stormwater or water discharge permits, are required to discharge pollutants into the “navigable waters of United States.” While it is never permitted to discharge “oil” into any waters of the US, there is some overlap with NPDES in ...


    By Ecocion, Inc.

  • Housing development wastewater treatment and constructed wetland disposal system

    Location: Sooke, BC Owner: Frances Gardens Housing Co-op Society Description: Innovative treatment and disposal design in an area of poor soils, including four-cell constructed subsurface flow wetlands to provide tertiary treatment of effluent from a 49 m3/d extended aeration activated sludge treatment plant. The renovated effluent from the ...


    By NovaTec Consultants Inc.

  • Industrial Laundry

    Problem: For many years industrial laundries discharged their effluent into the local sanitation plant without any restrictions. Now, when applying for a new discharge permit, the laundries are required to meet the new guidelines established by the EPA These requirements are normally as follows: 100 PPM for fats, oils and greases; and 250 PPM for total suspended solids. Some ...


    By HydroCal Inc.

  • Frances Kelsey secondary school advanced wastewater treatment constructed wetland and effluent irrigation

    Location: Mill Bay, B.C. Owner: School District No. 65 Description: Site constraints necessitated a 75.6 m3/d treatment and disposal system to serve 1,200 students. The system includes septic tank, equalization tanks, advanced activated sludge treatment plant with nitrogen and phosphorous removal, constructed wetland, storage tank, ...


    By NovaTec Consultants Inc.

  • Treatment of Arsenic Contaminated Industrial Wastewaters

    Arsenic in industrial wastewater effluents is attracting greater regulatory attention. Depending on factors such as total maximum daily loads (TMDLs), the National Pollutant Discharge Elimination System (NPDES) discharge permit levels for arsenic may even be less than the drinking water standard of 10 µg/L. One of the industries affected by stringent arsenic discharge limits is coal-fired power ...

  • Municipal Wastewater Treatment - Prichard, Alabama - Case Study

    TenCate  develops and produces materials that function to increase performance, reduce costs, and deliver measurable results by working with our customers to provide advanced solutions. THE CHALLENGE Prichard AL is a town of about 30.000 people north of Mobile. AL Paul David, the Sewer Board Superintendent, oversees the contract management of two (21 ...

  • Airport deicing effluent treatment and regulatory guidelines

    Airport and airplane deicing is employed with the use of brines, salts, alcohols or glycols to remove and prevent or delay the formation of snow and ice.  In the United States (US), the Federal Aviation Administration requires airlines that operate during icy conditions to perform deicing and anti-icing of aircraft and airfield pavement (USEPA 2011a).  These deicing operations use large ...


    By IWA Publishing

  • How to Win the Race for Everyone: Waste Management Solutions for Business

    Industry will always lead the way in the adaptation of new technology, and especially the technology of conservation.  This is not necessarily for any ideological reason, but because the people who manage water use better understand the economic incentives for adopting new technology.  Current technology of wastewater treatment is a perfect example of this acceptance of environmentally ...

  • Nation’s Largest Tank Barge Company case study

    The Problem: The Nation’s largest tank barge company is a centralized treatment facility that receives oily wastewater from barges and ships that transport oil and petroleum products. The wastewater is highly loaded with BOD, COD, TSS and oil and they were seeking a direct discharge permit. The Solution: In 2010, Ecolab partnered ...


    By BioprocessH2O

  • Membrane Bioreactor for Retirement Community

    The facility: Glen Meadows is a retirement community located next to Gunpowder Falls State Park in north-central Maryland’s open country.  The community has Independent Living, Assisted Living, and Skilled Nursing and Rehabilitation facilities. The problem: The facility has grown significantly over the years. At first, a septic system ...


    By Dynatec Systems Inc.

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