grit handling Articles

  • From theory to practice: preliminary and primary treatment residuals handling improvements

    The Upper Blackstone Water Pollution Abatement District (the “District”) treats wastewater, septage, and sludges generated in the central Massachusetts city of Worcester and surrounding communities, including a large urban area of combined sewers. This 45-million-gallon-per-day (mgd) advanced wastewater treatment facility, located near the headwaters of the Blackstone River, was constructed in ...

  • Rock Box Protects Headworks at Kansas City, Missouri Blue River Wastewater Treatment Plant

    Kansas City Missouri Water Services Department operates the 105 mgd Big Blue River Wastewater Treatment Plant (WWTP) serving combined and separate sanitary sewers on both sides of the Missouri River in Kansas City. Heavy grit inundation from the Combined Sewer System (CSS) was impacting the screen house and aerated grit/pre-aeration basins at this facility. Alternatives were considered for ...

  • A review of trends and adoption model for grid information technology

    Nowadays, scientific projects require collaborative environments and powerful computing resources capable of handling huge quantities of data, which gives rise to e-science. These requirements are evident in the need to optimise time and efforts in activities having to do with health and biotechnology. Scientists are taking increasing interest in an emerging technology ? Grid Information ...


    By Inderscience Publishers

  • Seasonal and influent characteristic effects on hydrogen sulfide generation at a water reclamation plant

    Correlations between sulfide generation and seasonal influent wastewater characteristics were identified based on a long-term monitoring program in summer and winter at a water reclamation plant. During summer, the emission rates of hydrogen sulfide (H2S) from the liquid treatment processes increased substantially compared to those during winter due to the increased wastewater temperature. The ...


    By IWA Publishing

  • Small Area Paint Removal Possible Only With Wet Sandblaster Pressure Washers

    Paint removal has always been a difficult task for cleaning workers and requires the use of robust machines that can remove paint from both large and small areas. Pressure washers are the ideal machines that can handle tasks like small area paint removal efficiently. The exceptional versatility and power of regular pressure washers has always been appreciated by professional cleaning experts. ...


    By Daimer Industries Inc.

  • Manufacturing facility cleaning case study

    The Challenge A large Industrial manufacturing facility found that their process used to perform the necessary tasks was creating an undesirable accumulation of heavy metals dust throughout the entire plant. Not only was this a potential health risk to the plant workers, there was a structural and safety problem because the dust could spark and cause a fire or explosion. ...


    By Enviro-Vac Corp.

  • Paint Stripping Using Plastic Media: Carstrip

     Carstrip Pty Ltd has established a dry process for stripping paint from motor vehicles undergoing panel repairs or restoration. The process uses ground plastic media in a sandblasting-type process to remove the paint from the vehicle without damaging the metal. The process has eliminated the generation of waste sludge associated with chemical stripping processes, and has reduced the labour ...


  • GTI’s Covers Provide Over 99 Percent Odor Capture at Sydney Water’s WWTP

    The Utility: The Cronulla Wastewater Treatment Plant (WWTP) is one of 30 wastewater treatment and water recycling plants in greater Sydney, the Blue Mountains, and the Illawarra. It is owned and operated by Sydney Water, Australia’s largest water utility. The plant is located on the southern end of the Kurnell Peninsula (about 18 km [11 miles] from the city center), and treats about 54 ...

  • Grout Steam Cleaning Machines for Tile Floor Cleaners

    Grout cleaning machines have greatly changed the way we tackle the task of cleaning tiles and grout. Tiles and grout are a tough challenge, mainly because these are two very different kinds of materials. They have a tendency to attract some of the toughest stains and deposits. While tiles tend to have a smooth, hard surface, grout tends to be soft and porous. This makes them the perfect place for ...


    By Daimer Industries Inc.

  • Strategic Abatement of Emission to Economically Support Development of High Profile Real Estate Adjacent to a Wastewater Reclamation Facility

    ABSTRACTThe Des Moines Wastewater Reclamation Authority operates a 97-million gallon per day regional wastewater reclamation facility (WRF) largely constructed in the mid 1980s to serve the greater Des Moines, Iowa metropolitan area. Originally constructed in a largely rural area, current plans for the area around the WRF establish a need for emissions control to reduce offsite odor impacts, in ...

  • Pumps with extended service life for generating biogas from organic waste

    When regular commercial pumps are used to process organic waste, they typically wear out after only a short period of time. Liquids pumped under these conditions attack pumps from two different angles: first with highly abrasive additives and second with liquids that have highly fluctuating pH values and therefore a high level of chemical aggressiveness. These conditions are very tough on seals ...


    By ALLWEILER GmbH

  • Process Alternative Comparisons Assisted with Biowin Modeling

    ABSTRACTPermitted at 6.4 mgd on an annual average day basis, the City of Avondale Wastewater Treatment Plant currently employs Nitrification/Denitrification process to produce effluent with maximum total nitrogen of 10 mg/L. The process consists of Aeration Basins followed by Secondary Clarifiers to treat the screened influent after the grit removal. On the solids handling side, the Wasted ...

  • Wastewater treatment facility uses ‘monsters’ to better manage screening, odor and trash

    As wastewater pours into the Cobourg Water Pollution Control Facility located on the outskirts of this Canadian town, it comes loaded with organics, trash, debris and chemicals. A large perforated plate screen system, called a Monster Separation SystemTM, is the plant’s first line of defense and removes all unwanted solids in order to protect downstream processes.Managers at the facility report ...


    By JWC Environmental

  • What is Wastewater?

    What is wastewater? Wastewater, the waste discharge that first comes to mind in any discussion of stream pollution, is the discharge of domestic wastewater, which contains a large amount of organic waste. Industry also contribute substantial amounts of organic waste, some of which comes from vegetable and fruit packing; dairy processing; meat packing; tanning; processing of poultry, ...


  • Case study - Wastewater - Upper Occoquan water reclamation plant

    The Smart Elbow Stops Lime Spills and Prevents Dust Cloud Exposure Robert Forgione, P.E. and his team at the Upper Occoquan Water Reclamation Plant in Centreville, Virginia were wading through yet another dust cloud to cleanup yet another pile of dry pebble lime and dust that had leaked from a failed elbow in the conveying line. While the hole measured a mere 1/2-inch across, it was ...


    By HammerTek Corporation

  • ORP and pH Based Control of SBR Cycles for Nutrient Removal from Wastewater

    ABSTRACTContinuous monitoring of multiple process functions were conducted involving removals of BOD, TSS and nutrients, in each cycle of the SBR reactor at the wastewater treatment plant of the City of Carrabelle, FL. On line, real time, monitoring of pH, oxidation reduction potential (ORP), dissolved oxygen (DO), ammonia-N, nitrite-N, nitrate-N and orthophosphate-P demonstrated excellent ...

  • Highmark secures allowance for US and South African patents for Integrated bioRefinery technology platform

    The standard has been raised for economically producing renewable gas/electricity/heat and valuable bio-products. Highmark's newest Waste-to-Energy technology is officially acknowledged as novel and unique and will now enjoy commercial protection. These patents join the family of inventions known as IMUS or the Integrated bioMass Utilization System. Highmark Renewables announces that key ...


    By Himark bioGas Inc

  • Processing Wastewater Sludge Using Dewatering Containers

    The relative cost of dewatering equipment varies widely and is directly related to the processing rate. For smaller utilities that need to dewater sludge in batches, dewatering containers are an alternative that can be relatively inexpensive and simple when compared to other technologies on the market. The most common type of dewatering container is based on a roll-off box design, although any ...

  • Streamlining Wastewater Treatment in Poultry Processing: Michigan Turkey and Lyco Team Up to Provide a Showpiece for Reducing BOD and TSS Levels

    With the steady increase in poultry processing rates there has been a corresponding increase in wastewater pollutant concentrations. Despite mechanical improvements in wastewater treatment, many poultry processors continue to pay unnecessarily high fees for municipal water discharges. $100-million-annual processor, Michigan Turkey Producers, in conjunction with Lyco Manufacturing, has set up a ...


    By Lyco Manufacturing, Inc.

  • World’s largest compressible media filtration plant eliminates combined sewer overflows, with potential for dry-weather use

    The City of Springfield, Ohio, recently opened its 100 MGD enhanced high-rate treatment facility, designed to treat and disinfect combined high-volume stormwater and wastewater flows generated by wet-weather conditions. Utilizing EPA-documented Compressible Media Filtration technology – FlexFilter™ from WesTech – the system can also provide tertiary filtration and disinfection ...


    By WesTech Engineering, Inc.

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