potw Articles

  • The Impacts of the California Global Warming Solutions Act of 2006 (AB 32) on Potws

    ABSTRACT In 2006 the California legislature established, and the Governor signed, the California Global Warming Solutions Act of 2006 (Assembly Bill 32, AB 32). AB 32 mandates that the California Air Resources Board (CARB) adopt rules and regulations to reduce greenhouse gas (GHG) emissions to 1990 levels by the year 2020. In order to meet this goal CARB must adopt regulations on mandatory ...

  • What? Partner with an NGO?

    Challenging relationships with environmental non-governmental organizations (NGOs) are nothing new to publicly owned treatment works (POTWs). Yet at their core, POTWs and environmental NGOs often share the same basic goal – protection of receiving waters. Indeed, aren’t POTW employees also “environmentalists” by the nature of their work to enforce the Clean Water Act? That begs the question: do ...

  • The Connecticut Nitrogen Trading Program: lessons learned and the challenges that remain to achieve the TMDL for Long Island Sound

    Long Island Sound’s (LIS) most pressing water quality problem is caused by over-enrichment of nutrients, specifically nitrogen, which leads to greatly reduced levels of dissolved oxygen in the bottom waters of western LIS. Primary sources of nitrogen include municipal wastewater treatment plant discharges (also known as publicly owned treatment works or POTWs), atmospheric deposition and runoff ...

  • Reducing Effects Of Endocrine Disrupting Compounds: Effluent Blending

    Treatment of Publicly Owned Treatment Works (POTW) sewage effluents to minimize adverse impacts to the environment has rapidly progressed through time. However, the increasing population and industrial demand for increased treatment combined with the developing interest in endocrine disrupting compounds (EDCs) in receiving waters are becoming a critical environmental concern. EDC levels in ...

  • Saving Money with your Wastestream

    Many industries aren’t aware that there are simple, cost effective solutions to lower the surcharges they are paying to the Publicly Owned Treatment Works (POTW’s). When the POTW is treating wastewater from an industrial source, they will charge the industry a surcharge to cover the additional cost of treating the industrial waste. Surcharging industries is a common practice since most industries ...


    By Integrated Engineers Inc.

  • Treatment Alternatives for Liquid Penetrant Rinse Waters

    Explores the options available to process wastewater generated from liquid penetrant inspection. Rinse waters containing residues from the penetrant inspection process are generated from all but Method C (solvent removal).  The rinse water contains penetrants (Method A), or penetrants and emulsifier (Methods B and D), which contain oils and surfactants.  The water may also contain ...


    By Infinitex Corp.

  • Membrane Bioreactor for Sanitary Landfill

    The Problem The county of Warren NJ owns and operates a sanitary landfill in Oxford Twp, NJ. The facility generates an average of 50,000 gallons per day of leachate, with peaks to 100,000 gallons per day. The facility was discharging to a local POTW from their lagoon, but they were facing requirements for nitrogen removal from the POTW and needed a new system to provide ...


    By Dynatec Systems Inc.

  • Oily Wastewater Processing Facility Wastewater Treatment Case Study

    Impressive Oil Water Separation This is the result of our Floccin 1105 product treating a sample from an oily wastewater treatment facility. As you can see, the Floccin 1105 was very effective at clarifying the waste as well as capturing all of the oil. These results were achieved with no pH adjustment and minimal Floccin addition (~ 1g/1000ml). The client is going to purchase and ...


    By Integrated Engineers Inc.

  • Sintered Metal Manufacturing 2

    This facility generates 2 waste streams from their metal sintering operations. This second waste stream comes from their post conditioning of the parts with the use of detergents for cleaning and a polishing compound for surface finish/deburring. The wastewater stored in several tanks and is hauled off site for disposal at $0.62/gallon. The treatability with Floccin H is shown in the jar test ...


    By Integrated Engineers Inc.

  • WEF Guide to Managing Peak Wet Weather Flows in Municipal Wastewater Systems – Wet Weather Management Framework

    The Water Environment Federation (WEF), under a Water Quality Cooperative Agreement with the U.S. Environmental Protection Agency, is developing a new WEF guidance document focused on effective practices for managing peak wet weather flows at municipal wastewater treatment facilities. This guidance provides protocols that describe successful wet weather management practices and processes; provide ...

  • Sintered Metal Manufacturing 1

    This facility generates 2 waste streams from their metal sintering operations. The first waste stream comes from their cutting oil operations and rinse water. The wastewater is then stored in several tanks and allowed to partially separate with some of the floating oil skimmed off. The residual wastewater (3,000 gallons/week) is then hauled off site for disposal at $1.15/gallon. The treatability ...


    By Integrated Engineers Inc.

  • Industrial Laundry-3

    The facility was trying to expand its market share by increasing the industrial linen operations. The facility washes a combination of ‘clean’ linens as well the ‘heavy’ linens from industrial clients in the form of shop towels, bar mops, and printer towels. The pretreatment system included the use of a 93% sulfuric acid, coagulant, calcium chloride for increased solids and settling rate, lime ...


    By Integrated Engineers Inc.

  • Is there mercury in your industrial wastewater discharge?

    An assessment of sampling locations for three industrial wastewater effluent piping systems is presented. The assessments provided demonstrate that by installing sampling ports at the appropriate location along an effluent stream’s piping system, truly representative samples can be collected. These real and accurate results scientifically prove that a specific industrial wastewater ...


    By Practical Applications, Inc.

  • Mirror Plating Wastewater Treatment

    In the manufacturing of certain mirrors, a strong copper solution at low ph is used to apply a thin coating to the glass surface. After adhesion, the excess is washed off and collected as wastewater. The wastewater at this facility is treated using 4 chemicals: caustic to raise the pH to 8.5, DTC (dithiocarbamate) as a metal precipitant, an organic based coagulant, and an anionic flocculant. The ...


    By Integrated Engineers Inc.

  • Textile Manufacturing

    A textile manufacturer in North Carolina was having a problem with removing color from their waste stream. The plant effluent had 800 color units and the local POTW was threatening to fine the manufacturer based on this discharge. The facility was using alum and a polymer to reduce the color and had continual violations for excess color. Integrated Engineers was requested to examine the water ...


    By Integrated Engineers Inc.

  • Contaminants of emerging concern in municipal wastewater effluents and marine receiving water

    The occurrence and concentrations of contaminants of emerging concern (CECs) were investigated in municipal effluents and in marine receiving water. Final effluent from four large publicly owned treatment works (POTWs) and seawater collected near the respective POTW outfall discharges and a reference station were collected quarterly over one year and analyzed for 56 CECs. Several CECs were ...


    By John Wiley & Sons, Ltd.

  • Grease Trap Wastewater Case Study

    Restaurant Wastewater Treatment Grease Trap Wastewater Treatment, Fats, Oils & Grease Easily Removed Wastewater Recycled A grease trap waste hauling operation requested assistance on determining ...


    By Integrated Engineers Inc.

  • Restaurant Wastewater Treatment

    Restaurant Wastewater Treatment Grease Trap Wastewater Treatment, Fats, Oils & Grease Easily Removed Wastewater Recycled A grease trap waste hauling operation requested assistance on determining ...


    By Integrated Engineers Inc.

  • Chlorine Disinfection of Blended Wastewater Effluents

     KeywordsBlended Wastewater, Disinfection IntroductionFlow to publicly owned treatment works (POTWs) increases during wet weather events, due to intrusion of storm water into sanitary collection systems and use of combined sewer systems. When such flows exceed the hydraulic capacity of a POTW alternate flow management techniques must be employed to ensure that ...

  • Petroleum Hydrocarbons in Wastewater

    A wastewater treatment company established and operates an oil/water separation facility on a multi-acre industrial site in Northern California. Its purpose is to recycle oil products for profit while at the same time provide a wastewater treatment service for industries based in Northern California. The oily water mixes processed by the company are obtained from tanker bilges, contaminated ...

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