scum remover Articles

  • Steam Wash Systems: Simplifying Soap Scum Removal

    Bathroom maintenance is one of the most demanding cleaning applications in most hospitality settings and restrooms. The floors, walls, show stalls, bathtubs, and sliding doors can quickly develop rust, hard water, and soap scum with daily use. This is primarily due to the high moisture levels, poor lighting, and minimal air circulation in these areas. Sometimes, the use of best chemicals or hours ...


    By Daimer Industries Inc.

  • Enhanced phosphorus removal in the DAF process by flotation scum recycling for advanced treatment of municipal wastewater

    To remove phosphorus (P) from municipal wastewater, various types of advanced treatment processes are being actively applied. However, there is commonly a space limit in municipal wastewater treatment plants (MWTPs). For that reason, the dissolved air flotation (DAF), which is well known for small space and flexible application process, is preferred as an additive process to enhance the removal ...


    By IWA Publishing

  • CH#835 - Grease Removal

    The problem of degrading 6,000+ ft of grease daily has an easier solution than thought at the 27 MGD a Massachusetts Waste Water Treatment Plant. 'At one time, the plant had more grease in its scum pits than it could handle,' said an  engineer . 'Worse yet, there was nowhere to put it. Local landfills stopped accepting greasy solids.' Now the plants grease problem has been virtually solved. ...


    By BIO-SYSTEMS International

  • Steam Cleaner for Removing Bed Bug with Pest Control Method

    Bed bugs are a nuisance that is not easily eliminated. They infest bedding and upholstery, and are difficult to remove once they start growing in numbers. Even upscale hotels and spas find it hard to fight the bedbug menace, and homeowners often grow desperate in their search for a remedy to bedbug infestations. One of the safest and more effective ways to control bedbugs is to use a steam ...


    By Daimer Industries Inc.

  • Putrajaya WWTP, Phase I & II, Kuala Lumpur CSS

    Design capacity of 300 000 P.E (phase 1) and 600 000 P.E. (phase II) DEWACO Supplied full package for the sludge removal system of: 4 nos. Chain & Flight type sludge and scum collectors and 4 nos. scum pipes (each 62m long and 9m width) for Phase I Project completion: 1998 10 nos. Chain & Flight type sludge and scum collectors and 10 nos. scum ...


    By Dewaco Ltd

  • MOL oil & gas refinery

    MOL Hungarian Oil & Gas Plc is the national Oil & Gas company for Hungary, it forms part of the large MOL Group and is by far the largest, in terms of turnover for the Hungarian sector as a whole. The project is a first for the region. API Settlers DEWACO supplied a fully functional sludge removal system comprising of: 6 nos. Chain & Flight type sludge and scum ...


    By Dewaco Ltd

  • Mumbai Refinery Mahaul (BPCL) API settlers

    API Settlers DEWACO deployed a complete sludge removal system consisting of: 16 nos. Chain and Flight type sludge and scum collectors and 28 nos. Scum pipes . 3 nos. 21 x 2,5 3 nos. 21 x 2,5 2 nos. 18 x 4,6 3 nos. 18 x 6,1 5 nos. 18 x 6,1 Project completion: 2008 ...


    By Dewaco Ltd

  • Anaerobic co-digestion of sewage sludge and primary clarifier skimmings for increased biogas production

    The objective of the study was to identify the impact of co-digesting clarifier skimmings on the overall methane generation from the treatment plant and additional energy value of the increased methane production. Biogas production from co-digesting clarifier skimmings and sewage sludge in pilot-scale fed-batch mesophilic anaerobic digesters has been evaluated. The digester was fed with ...


    By IWA Publishing

  • Viikinmäki WWTP

    Helsinki city municipal wastewater treatment plant DEWACO delivered a complete sludge removal system comprising of: 14 nos. Chain & Flight type sludge and scum collectors (each system 65m x 8,2m) Project completion: 2008 Customer: Helsinki City Background info of this unique plant design can be found ...


    By Dewaco Ltd

  • Lipid Degradation in a Two-Phase Anaerobic SBR and Upflow Anaerobic Sludge Blanket

    LCFAs, the intermediate products in lipid biodegradation are known to inhibit microorganisms by their toxicity and floatation. To reduce LCFA inhibition, two-phase anaerobic system, consisting of anaerobic sequencing batch reactor (ASBR) and upflow anaerobic sludge blanket (UASB) reactor, was applied to synthetic dairy wastewater. During 153 days of continuous operation, two-phase system showed ...

  • Examination of sludge accumulation rates and sludge characteristics for a decentralized community wastewater treatment systems with individual primary clarifier tanks located in Wardsville (Ontario, Canada)

    In conventional septic systems, settling and partial treatment via anaerobic digestion occurs in the septic tank. One of the byproducts of solids separation in the septic tank is a semi-liquid material known as septage, which must be periodically pumped out. Septage includes the liquid portion within the tank, as well as the sludge that settles at the bottom of the tank and the scum that floats ...


    By IWA Publishing

  • Denitrification and Floating Sludge

    What is Denitrification? Denitrification is the conversion of soluble nitrate to nitrogen gas in the nitrogen cycle. For denitrification to occur, three factors are needed: Presence of Nitrate Anoxic conditions (no free dissolved oxygen) A carbon source (soluble BOD) Floating Sludge Denitrification is useful and ...

  • 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 ...

  • Cardiff Harbour Authority, UK

    The regeneration of Cardiff Bay created a complementary development of housing, leisure, business and commerce - however they had a problem. Debris, rubbish and invasive aquatic weed was entering the bay from two rivers (approx 500 hectres water space). Cardiff Harbour Authority launched a competitive tender for a range of equipment to undertake a wide range of environmental responsibilities. ...


  • Comparing the performance of prescribed septic tanks to long, narrow, flooded designs

    About 30% of all sewage generated in North America passes through septic tanks, but there is a lack of study to improve these important treatment vessels, and there is no performance-based standard. A survey of existing literature shows that septic tank effluent quality is improved in tanks designed for quiet, laminar fluid-flow and minimum ‘dead space’ such as in longer, narrower tanks. A ...

  • The Right Choice to Maintain Hotel Rooms

    Maintaining high-traffic areas in hospitality settings, such as hotel rooms, can be a really overwhelming task. After all, impeccable maintenance of hotel rooms encompasses a multitude of applications, including disinfecting the toilets, scrubbing floors, cleaning counters, deodorizing mattresses, and more. As more and more people continue to use the facilities on a daily basis, it can be harder ...


    By Daimer Industries Inc.

  • Anaerobic sewage treatment technology in Latin America: a selection of 20 years of experiences

    From the early introduction of Anaerobic Sewage Treatment, AST, technology to Latin America 20 years ago to now, the technology has become a viable alternative to provide affordable sanitation to the region. The engineering community has learned to identify and manage the main risks factors of the technology, namely: odor emissions, material corrosion, scum removal and low treatment performance ...

  • Temporary treatment systems for large construction site in Stratford, East London

    Filter refurbishment program for 2000 site workers/staff Site Contractor: Natta Building Company Peak flow to treatment: 10.5l/s Designed consent standard: 20 mg/l BOD, 30 mg/l TSS & 10 mg/l NH4 Maximum incoming BOD: 380 mg/l Maximum incoming NH4: 50 mg/l Units supplied: 4 off 300pe GRP units 1 off 750pe steel unit 2 off HB50 Lamella settling tanks (primary and ...


    By WPL Ltd

  • Occurrence of Microthrix parvicella in sequencing batch reactors

    Sequencing batch reactors (SBRs) are known for high process stability and usually have a good sludge volume index (SVI). Nevertheless, in many SBRs in Germany for municipal wastewater treatment, scum and foam problems can occur, and SVI can be larger than 200 mL/g. The microscopic investigations of the activated sludge from plants with nitrogen and phosphorus removal have shown that Microthrix ...


    By IWA Publishing

  • Fat Trap case study

    During the summer season at a busy National Park, we were asked to give assistance with a blocked soakaway drain. Due to the location and the time of year the soakaway had to be treated rapidly and with the minimum of disturbance. Then drain received combined effluent from a busy restaurant (which had not been maintained) and a large septic tank that served several public toilets. The pipe ...


    By Bio Systems Europe

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