wastewater discharge permit Articles

  • 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

  • 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

  • A Water Quality Modeling Approach to Negotiating NPDES Wastewater Permits

    ABSTRACTJohnson County Wastewater (JCW) of Overland Park, Kansas operates two wastewater treatment plants on Indian Creek, the Douglas L. Smith Middle Basin WWTP (MB) and the Tomahawk Creek WWTP (TC), which discharges to Indian Creek about 7 creek miles downstream of the MB discharge location. In 2004, the Kansas Department of Health and Environment (KDHE) issued draft revisions to the NPDES ...

  • Zero discharge system handles german power station’s fgd wastewater

    Evaporator/Crystallizer Combined with Salt Exchange Pretreatment is the Answer for this Demonstration Plant. The Facility A major European utility has several power block units fitted with wet limestone FGD scrubbers at their 600 MW power station in southern Germany. The blowdown from the scrubbers is treated to remove the heavy metals and suspended solids. The ...

  • KPDES Permit Compliance: Metals in Wastewater Effluent at Fort Knox

    ABSTRACT Prior to constructing a new FOTW, Fort Knox had a history of exceeding KPDES effluent limitations for ammonia and BOD. The new 6 MGD FOTW solved the problem, but metals exceedances became an issue. The exceedances could be linked to several factors: low water-quality based effluent limitations (WQBELs) on the new KPDES permit, high background concentrations of some metals, and high ...


    By Weston Solutions, Inc

  • Municipal Wastewater

    Municipal wastewater namely sewage is generated by residential, institutional, commercial and industrial establishments. It includes household waste liquid from toilets,baths,showers,kitchens, and sinks drained into sewers. In many areas, sewage also includes liquid waste from industry and commerce. The separation and draining of household waste into greywater and blackwater is becoming more ...


    By Horizon Water Co., Ltd.

  • Monitoring Hydrocarbons in Wastewater - Case Study

    The Situation A wastewater treatment company operated an oil/water separation facility on a multi-acre industrial site in Northern California. Its purpose was to recycle oil products for profit while at the same time providing a wastewater treatment service for industries based in Northern California. The oily water mixes processed by the company were obtained from ...

  • Marine Sciences Investigations in Support of Level Oftreatment Decisions for Municipal Wastewater Discharges in Puerto Rico

    ABSTRACT The Puerto Rico Aqueduct and Sewer Authority (PRASA) currently has National Pollutant Discharge Elimination System (NPDES) permits that incorporate relaxation (waiver) of BOD and TSS secondary treatment requirements for six of its regional wastewater treatment plants. The waivers are available under Section 301(h) of the Clean Water Act. Maintaining the waivers requires, in part, ...

  • Case Study: Precision Machine Shop Eliminates Sewer Discharge

    Samsco Water Evaporator enables both cost reduction and elimination of sewer discharge. TEC, Inc. (Rockville, MD), providers of precision sheet metal fabrication and precision machining, for more than thirty years, has partnered with many well-known technology companies to meet their need for superior quality, precision metal products.  Their offerings range from simple metal components to ...


    By Samsco Corporation

  • 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 ...

  • A wastewater plant bio-augmentation success

    Rosethorne WWTP is located in Jefferson Parish, Louisiana, just west of New Orleans. The plant was constructed in the mid-1990s with a design capacity of 400,000 GPD. Today, the average daily flow through the plant is approximately 250,000 GPD. During Hurricane Katrina, in 2005, the plant suffered considerable damage to its mechanical infrastructure, and even after repairs, its effluent was ...


    By Reliant Water Technologies

  • Upgrade of a Publicly Sensitive WWTP to Seasonal Discharge into the Chesapeake Bay and to Land Application

    The Town of Centreville, Maryland owns and operates a wastewater collection, transmission and treatment facility that serves approximately 2,500 residents with a present average flow rate of 0.35 million gallons per day (MGD). This paper describes renovations to the facilities to provide a treatment and disposal system that would comply with the stringent effluent requirements associated with ...

  • Aquidneck Place wastewater system information

    Institutional facilities typically have larger wastewater flows with lower organic concentration than commercial waste streams.  However, some institutions such as schools may have exceptionally high concentrations of ammonia nitrogen and very erratic peak flows.  It is critical to understand the institution’s lifestyle and sanitary routines when designing a treatment system. The ...


    By Aquapoint

  • Metal treatment facility eliminates wastewater

    The Facility A specialty metals facility located in Euclid, Ohio rolls, forms, cuts and presses specialty metals for the aircraft and aerospace, auto and electrical industries. This plant specializes in high value molybdenum and tungsten, as well as copper parts. The Problem As a result of the metal rinsing processes in the facility discharged water into ...

  • Full-scale field trials identify sulfate discharge limits for municipal wastewater odor and corrosion control

    ABSTRACT The Massachusetts Water Resources Authority (MWRA) owns and operates one of the largest wastewater collection and treatment systems in the U.S. serving 45 member communities and operating the 1.2 billion gallon-per-day Deer Island Wastewater Treatment Plant in Boston Harbor. The MWRA has very few odor and corrosion problems so it was unusual when the MWRA encountered a high ...

  • All For One & One For All: A Water Reuse Partnership with Innovative Treatment and Permitting

    Cooperation between the City of Mankato, MN, Calpine Corporation, and the Minnesota Pollution Control Agency (MPCA) has created benefits for all. In late 2004, an agreement was reached between the City of Mankato, MN and the Calpine Corporation, an independent power production company, to treat and reuse the City's wastewater treatment plant effluent as cooling water for a proposed 640-megawatt ...

  • Tucson to Revive River with Recycled Wastewater

    Plan will take advantage of existing water reuse facilities Traveler Julius Froebel once described the lush river valley that he encountered on his 1855 trip along the Santa Cruz River as: […] covered with poplars and willows, ash-trees and plantains, oaks and walnut trees […] ...


    By Fluence Corporation

  • Wetlands for Industrial Wastewater Treatment at the Savannah River Site

    ABSTRACT The A-01 effluent outfall, which collects both normal daily process flow and stormwater runoff from a industrial research facility, did not meet the South Carolina Department of Health and Environmental Control (SCDHEC) National Pollutant Discharge Elimination System (NPDES) permit limits for metals, toxicity, and total residual chlorine at the outfall sampling point. Copper was the ...


    By Weston Solutions, Inc

  • Control VOC`s in Refinery Wastewater

    Oil and water do not mix, like many of life’s one-liners this statement is basically true but not the whole story. Many hydrocarbon liquids, particularly aromatics, have significant solubilities in water: Benzene 1800 PPMVToluene 470Ethyl Benzene 150Xylenes 150 Petroleum refineries do not like salts in their feedstock since these corrode and foul process equipment. The first refining step is ...


    By AMCEC Inc.

  • 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 ...

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