grease digester Articles

  • Grease Trap Test, Waffle House - Case Study

    Location: Waffle House Pensacola Florida 11/01/10 Test Conducted by: Mr. Darrell Milligan Class”A” Florida Certified Waste Water Plant Operator License # FL. 3466 On November 10, 2010, 4 Grease interceptor tests were conducted at 4 separate Waffle House Restaurant’s located in Pensacola Florida. ...

  • CH#970- Rotating Biological Contactors

    Waste Type: Municipal Flow: 0.99 MGD Problem: Increases in BOD loadings had created a burden for this municipal plant and the operator in charge. Grease build-up had accumulated in the lift stations and a white filamentous film had developed on the RBC's. The plant settled poorly and there was a great deal of foaming on the ...

  • CH#1138 - Anaerobic Digesters

    Waste Type: Fats, oils and grease (FOG) in Anaerobic Digesters Problem: FOG waste poses a challenge for most municipal wastewater collection systems and treatment plants. Although fats, oils and grease will biodegrade in an anaerobic digester, high concentrations will tend to 'mat' on the sludge surface, lowering digestion efficiency. This Midwestern municipal facility was no different. The 1.5 ...

  • Optimization of municipal sludge and grease co-digestion using disintegration technologies

    Many drivers tend to foster the development of renewable energy production in wastewater treatment plants as many expectations rely upon energy recovery from sewage sludge, for example through biogas use. This paper is focused on the assessment of grease waste (GW) as an adequate substrate for co-digestion with municipal sludge, as it has a methane potential of 479–710 LCH4/kg VS, as well as the ...


    By IWA Publishing

  • Making Cogeneration Pencil Out: Anaerobic Co-Digestion of Grease Trap Waste

    At the end of 2006 the City of Millbrae, California completed a $5.5 million wastewater treatment plant improvement project at no additional cost to the City’s ratepayers. The project improved cogeneration facilities, provided an automated grease trap waste receiving station, improved digester heating, replaced the aging main electrical switchgear, and enhanced digester mixing. Costs for the ...

  • Ecofriendly Alternative to Fight Grease Build-ups

    Grease traps or Grease interceptors capture the grease that goes down the kitchen drains. The simple fixture prevents slimy build up inside the drainpipes, which may result in choked drains and backflows. It is essential to cleanout these traps timely before the build up is too high to tackle. Properly maintained grease interceptors allow smooth operation of the drains by keeping the water ...


    By Hydra International Ltd

  • Semi-continuous mesophilic anaerobic co-digestion of thermally pretreated scum

    The objective of this study is to investigate the mesophilic, anaerobic, co-digestion of scum with thickened waste activated sludge (TWAS) and primary sludge (PS). Observations of the reactor waste show that higher pretreatment temperatures assist in scum integration and appear to limit coagulation and separation effects associated with digesting fats, oils and greases. The 0.40 kg VS/m3 · d ...


    By IWA Publishing

  • Commercial - Area 5, Italy - Case Study

    Problem with high levels of FOG in wastewater resulting in the need for frequent pumping and emptying of the grease trap, which has been dramatically reduced using a BioAmp. Area 5 is the new washing station for commercial, industrial, construction vehicles and tourism buses. It’s modern equipment is in line with the most rigorous regulatory requirements regarding control, hygiene ...


    By NCH UK Ltd

  • Cleveland biotech steps in to clear drains and supermarket name case study

    After a leading supermarket chain was fined £13,500 for contaminating a public sewer with fat from a rotisserie chicken cooking area, it turned to Cleveland Biotech to ensure the problem never arises again. Following an investigation and subsequent prosecution by Northumbrian Water the supermarket wasted no time in contacting Cleveland Biotech, a specialist in providing natural solutions to ...


    By Cleveland Biotech Ltd.

  • Kitchens - Yazaki, Romania - Case Study

    YAZAKI ROMANIA is a Japanese company that produces in Romania automotive cabling for Toyota, Ford, etc, and has approx. 4000 employees. They have an eating hall supplied by EUREST ROM in catering system. YAZAKI ROMANIA transferred the responsibility of drain maintenance to EUREST ROM. The sewage consists of the lines between kitchen (plates and dishes washer) – grease trap – ...


    By NCH UK Ltd

  • Cbio steps in to clear drains and supermarket name case study

    After a leading supermarket chain was fined £13,500 for contaminating a public sewer with fat from a rotisserie chicken cooking area, it turned to Cleveland Biotech to ensure the problem never arises again. Following an investigation and subsequent prosecution by Northumbrian Water the supermarket wasted no time in contacting Cleveland Biotech, a specialist in providing natural solutions to ...


    By Cleveland Biotech Ltd.

  • Nisqually Tribal Casino grease trap and wastewater issues & DO2E Little John Digester Sytem - Case Study

    As the facility manager at the Red Wind Casino in Olympia Washington, my duties included solving various wastewater problems, implementing standards and insuring compliance with wastewater issues. This work included installing several Little John Digesters, managing construction of a 10, 000 Sq. Ft. sewer collection system, and having to design build four additional, 30,000 Gallon grease traps ...

  • Grease waste and sewage sludge co-digestion enhancement by thermal hydrolysis: batch and fed-batch assays

    Grease waste (GW) is an adequate substrate for sewage sludge co-digestion since, coming from a waste water treatment plant, it has a high methane potential (489 NmLCH4/gVSin); however, no synergistic effect takes place when co-digesting with 52%VS grease. Conversely, thermal hydrolysis (TH) improves the anaerobic digestion of GW (43% higher kinetics) and biological sludge ...


    By IWA Publishing

  • DO2E digester with hybrid ozone applied

    In an earlier document, I put forth a rationale for treatment of waste streams using our DO2E digesters and even mentioned the Aerators in passing. Let us concentrate our efforts with respect to ozone, especially with the Digesters, to three application areas: grease traps, selected lift stations, and down line treatment areas such as polishing ponds and effluvia of various sorts. The DO2E ...

  • Food processor requires grease management case study

    Greasebeta Helps Meat Processing Plant Impress Water Authority Northumbrian Water is reportedly “over the moon” with Tyne & Wear based meat product manufacturer SMP (GB) Ltd since the company installed a GreaseBeta system from Cleveland Biotech in April 2005, preventing its production processes polluting and blocking the public drains. “After we received a ...


    By Cleveland Biotech Ltd.

  • Columbus, Georgia`s High-Efficiency, Low Cost, Digester-Gas-Fired Power Plant

    ABSTRACTGrowing concern over the cost of power and long-term availability of limited fossil fuel resources for the production of electricity have caused electrical utilities and governments to promote “green” or renewable power. Solar, wind, geothermal, biomass, biogas, and low-impact hydroelectricity are current acceptable green-power sources. Digester gas is a renewable, green energy resource ...

  • CH#826 - Municipal Oxidation Ditch

    BackgroundThe treatment plant at this Midwestern City is a well operated facility treating approximately 1.1 mgd municipal waste from the surrounding community. Over the past several years the publicly owned treatment works has consistently been able to produce an excellent quality effluent with respect to BOD, suspended solids, ammonia and phosphate. To achieve this level of treatment, the ...

  • The natural way to clean wastewater

    John Todd founded Ocean Arks International in the 1980s, where he started to experiment with processes that mimic natural ways to purify wastewater. He built a greenhouse and ran sewage through a series of tanks, with plants suspended in the flowing waters, and constructed marshes made of sand and gravel. No chemicals were added, but plenty of aquatic creatures from snails to small fish were ...


    By BioCycle Magazine

  • Digester Developer Taps Natural Gas Markets

    IN the late 1990s, Dan Eastman and two colleagues were researching business opportunities in the renewable energy industry. They were looking for a commercially viable technology that could take renewable energy from an experimental phase to a solid business investment. In 1999, Eastman and his partners founded Microgy, Inc., with its base in Wisconsin. The company licensed the Xergi anaerobic ...


    By BioCycle Magazine

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