sludge dewatering facility Articles

  • Pyrobustor - A Proven,Small-Scale, Biosolids-to-Energy Solution

    27 municipalities in southern Germany set up a special-purpose entity called KSV GmbH for the specific purpose of disposing regional sewage sludge. The goals of this project were two-fold; eliminate the expensive cost of transporting sewage sludge over long distances and avoid incalculable costs by outsourcing sludge disposal. To achieve this, KSV GmbH installed the Pyrobustor® at the ...


    By Eisenmann

  • Pacific place contaminated groundwater treatment facility

    Location: Vancouver, B.C. Owner: B.C. Ministry of Environment, Lands and Parks Description: This $1.5 million facility is capable of treating 135 L/min of contaminated groundwater, removing primarily BTEX and PAH. Through aeration, pH adjustment, and polymer addition, flocculation and settling, the majority of the contaminants are removed. ...


    By NovaTec Consultants Inc.

  • Lead Plating

    A Midwest company is plating lead and etching the material with an HCl batch. The resultant wastewater had a lead concentration of 2,000-4,000 ppm. Traditional chemistry (pH adjustment to 9.8, coagulation/flocculation) could only decrease the concentration to 5.0 ppm. The facility was had to retreat the wastewater and only then could reach a lead level of 3.0 ppm.  With the use of the ...


    By Integrated Engineers Inc.

  • Using geotextile tubes for dewatering and beneficial use of high water content solid wastes: design charts and verifications

    The interest to push the beneficial use of high water content solid waste materials to a greater extent has increased tremendously. Using woven geotextile tubes as confinement and dewatering facilities for industrial, municipal sludges, and dredged materials offers various advantages to expand and enhance existing beneficial use strategies. To be successful, proper design of geotextile tubes is ...


    By Inderscience Publishers

  • Sludge treatment reed bed facilities – organic load and operation problems

    The dewatering of the sludge with loss on ignition between 50 and 65% will have a maximal drainage on the order of 0.008–0.020 L/s/m2. Dewatering of the sludge with loss of ignition higher than 65% of dry solids will have a maximal drainage on the order of only 0.001–0.004 L/s/m2, approximately five to 10 times lower. It can be seen that there is a tendency for the achievable dewatering result to ...


    By IWA Publishing

  • Evaluation of Alternative Operation Modes for Aerobic Digester at the Fountain Hills Sanitary District Wastewater Treatment Facility

    Recycle streams from sludge digestion facilities to activated sludge processes can be important in the overall performance of wastewater treatment facilities. The recycling streams at the wastewater treatment plant for the fountain Hills Sanitary District Wastewater Treatment Plant include digested sludge dewatering centrate, waste activated sludge thickening centrate, and filter backwash water. ...

  • A comparative perspective of US and UK thinking on e-coli reactivation in digestion and dewatering

    Since 2003 a number of WWTPs have observed elevation of E Coli densities following dewatering of digested sludge by high solids centrifuges, mainly in the US. A recent study by WERF shows that this applies to 4 out of 7 facilities studied in detail. A review of all the literature shows that the phenomenon occurs in 31 out of 33 facilities and includes those with thermophilic digestion or ...


    By Cambi Group AS

  • Three years of operation of North America's first nutrient recovery facility

    The first full-scale nutrient recovery installation in North America became operational in May 2009 at the Clean Water Service's Durham Advanced Wastewater Treatment Plant in Tigard, Oregon. Recovering ammonia and phosphorus from the dewatering side stream as struvite has a positive impact on plant operations. Significantly reducing the phosphorus recycle lowers the phosphorus loading on ...


    By IWA Publishing

  • Integrated Engineers Case Study: Circuit Board Manufacturer

    A circuit board manufacturer in southern California was not able to achieve the discharge levels of copper and nickel with their existing system of coagulant, anionic and cationic flocculants and metal precipitant treatment process followed by lamella plate clarification. The previous treatment process developed a settled sludge that had poor shear characteristics and required further coagulant ...


    By Integrated Engineers Inc.

  • Septic tank in Ukraine case study

    Ultra-small VOLUTE Dewatering Press ES-051 largely solves all the costs and maintenance problems. In the year of 2004 in Ukraine, there was no compact sludge dewatering equipment suitable for small-scale wastewater treatment facilities like septic tanks. As for septic tanks, it had been common that liquid sludge was disposed by tanker truck and delivered to central sludge ...


    By AMCON Inc.

  • A case study of the sludge thickener - Large Commercial Facility (Office Building)

    Costs for industrial waste reduced with sludge thickener Some office buildings and large commercial facilities have wastewater treatment facilities underground. In such case, it is difficult to take dewatered cake out, so sludge is kept in liquid form and vacuumed out by pump without being dewatered. This potential customer also had been vacuuming out the liquid sludge, and had considered how to ...


    By AMCON Inc.

  • Hazardous Oily Water Treatment Facility

    Wastewater Treatment Success Stories Hazardous Oily Industrial Waste Water Treatment The sample was received was at a pH of 6.8 and did not require any pH adjustment. 100 ml of the sample was tested and dosed with 0.4 ...


    By Integrated Engineers Inc.

  • Woodstock WWTP Town of Woodstock, VA

    The Town of Woodstock was hauling liquid sludge to a regional plant which was having difficulty handling the high solids loading to their own plant. Woodstock needed of a temporary dewatering solution and decided to control their destiny by purchasing or renting dewatering equipment. With a growing town and an upcoming facility expansion, the plant had no building for equipment and decided that a ...


    By BDP Industries

  • Assessment of a Danish sludge treatment reed bed system and a stockpile area, using substance flow analysis

    Sludge treatment reed bed (STRB) systems combine dewatering, stabilisation and long-term storage of sludge. The main objective of this study was to investigate how substance concentrations change in the sludge residue during treatment and to conduct substance flow analyses covering the flow of substances in an STRB system over a 12-year treatment period, followed by three months' ...


    By IWA Publishing

  • 21 Years of O&M Experience with Hybrid Anaerobic Treatment

    In 1983, the NutraSweet Company (NSC) commissioned a hybrid anaerobic treatment system for treating the high-strength wastewater at the site. The anaerobic treatment system has operated continuously from start-up in 1984. The anaerobic treatment facility consists of two upflow reactors with an open or suspended-growth zone in the lower section of the reactor and structural media in the upper part ...

  • The role of SSVF and SSHF beds in concentrated wastewater treatment, design recommendation

    The return flows of reject water from sewage sludge dewatering alter the activated sludge process in a conventional WWTP and increase TN concentration in the final effluent from WWTP. The objective of the investigation carried out was to consider the application of multistage treatment wetland (MTW) for the treatment of reject water from sewage sludge dewatering in a centrifuge (RWC). This paper ...


    By IWA Publishing

  • Sewage Plant - Hei Ling Chau Island, Hong Kong - Case Study

    Sewage plant with SYSDAF as clarifier and sludge thickener - Flow 200m3/hour Upgrade of a sewage plant at a Hong Kong government facility on Hei Ling Chau Island in Hong Kong. Two SYSDAFs were used for clarification and sludge thickening of the biological mixed liquor, instead of the old clarifier. ...


    By Syskill - WWTS P/L

  • Salmon Processor 2

    This facility generates 5,000 gallons of 4-6% solids sludge from their DAF using Floccin 1105. In addition, there are 24 bins per day (about 1 cubic yard each or 250 gallons) of nonedibles defined as off spec materials, cooking oil, batter, hot dogs, and chicken parts. Currently, 13 loads are transported for disposal to offsite disposal facilities that have hauling as well as tipping fees. In an ...


    By Integrated Engineers Inc.

  • Two-phase anaerobic digestion for class a biosolids at moccasin bend WWTP

    The Moccasin Bend Wastewater Treatment Plant (WWTP) provides treatment for the City of Chattanooga, Tennessee and the surrounding region. The City has completed upgrades to the solids handling facilities to treat and dewater the primary solids and waste activated sludge (WAS) from the WWTP. This paper summarizes the process to handle the primary solids and the start-up process. Primary solids ...

  • Impacts of Process Enhancements on Fecal Coliform Concentrations in Anaerobically Digested Biosolids

    Approximately 60 percent of wastewater utilities across the nation land apply biosolids for agricultural use. The US EPA approved methods most commonly used to measure pathogens killed and to ensure biosolids are safe for land application are (1) monitoring time and temperature during the treatment process (operational standards) or (2) testing for the presence of fecal coliform bacteria ...

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