wastewater biosolids Articles

  • Emerging Technologies for Wastewater Biosolids Management

    This guide will help municipal wastewater treatment system owners and operators find information on emerging biosolids management technologies. Featured technologies can be used to reduce the volume of residuals to be managed, produce stabilized biosolids that can be used to help improve soil fertility and tilth, or promote the recovery of energy from biosolids. Technical and cost data for more ...

  • Influence of water treatment residuals on dewaterability of wastewater biosolids

    Co-dewatering of water treatment residuals (WTR) and wastewater biosolids can potentially benefit municipalities by reducing processing equipment and costs. This study investigated dewaterability (using capillary suction time, CST) of combined alum residuals (Al-WTR) and anaerobically digested biosolids at various blending ratios (BR), defined as the mass ratio of WTR to biosolids on a dry ...


    By IWA Publishing

  • Pyrobustor for the thermal treatment of biosolids

    ARA Pustertal AG operates the Tobler wastewater treatment plant in South Tyrol, Italy. The Tobler ARA facility is the fi rst and only water treatment plant in Central Europe that is housed in an underground cavern. The impressive cavern plant, whose tunnels are twice as large as that of a highway tunnel, began operation in July, 1996. The inclusion of a sludge drying plant and a thermal sludge ...


    By Eisenmann

  • National Biosolids Overview

    In all, the 1990s have been good for the biosolids recycling community. Greater quantities of biosolids are being beneficially used than ever before, there are national biosolids regulations that are widely accepted as a good baseline, and there is an extensive, accessible network of researchers, practitioners, advisers and public officials who when combined, provide thousands of years worth of ...


    By BioCycle Magazine

  • Texas composter grows with biosolids

    New Earth Compost and Soils — with facilities in San Antonio and Conroe, Texas — was born 15 years ago out of a local meat packing plant’s long-standing need to dispose of manure from its operation (see “Composting Integrated Into Family Business,” October 2009). It soon became evident that scores of other businesses in and around the San Antonio area, where the ...


    By BioCycle Magazine

  • Innovation Key To Biosolids Digestion

    A $400 million project at the Blue Plains Advanced Wastewater Treatment Plant (AWTP) in Washington, D.C., involves building an innovative biosolids management system comprised of a thermal hydrolysis process, four 3.8-million gallon mesophilic digesters (measuring 70-ft tall by 100-ft in diameter) with fixed covers, a cogeneration system consisting of three 4.6-MW Solar Mercu ry 50 gas turbines ...


    By BioCycle Magazine

  • An Advanced Biosolids Treatment Process and Potential Beneficial Applications of the Processed Biosolids

    ABSTRACTAn innovative and cost-effective biosolids treatment and processing technology was developed and demonstrated at a pilot and full-scale at the Guelph Wastewater Treatment Plant in Ontario. The Lystek process involves a low but optimized application of heat, alkali, and mixing in a batch or semi-continuous system to achieve the desired physical, chemical and microbiological characteristics ...

  • Evaluation of the biosolids compost maturity in south Isfahan wastewater treatment plant

    As a promising alternative for biosolids disposal, land application of composted biosolids has increased in the past decade (Goldstein and Steuteville, 1996). One of the important factors affecting the successful use of biosolids compost for agricultural purposes is stability and maturity it. Application of unstable or immature compost may cause slow plant growth and damage crops by competing for ...


    By University of Tehran

  • Preliminary evaluation of biosolids characteristics for anaerobic membrane reactors treating municipal wastewaters

    This study assessed the characteristics of biosolids of a pilot-scale anaerobic membrane bioreactor (AnMBR) treating municipal wastewater. The production of total solids (TS) and volatile solids (VS) was comparable to that reported for the extended aeration system at solids residence time (SRT) longer than 40 days. The yields of TS and VS were reduced as SRT increased from 40 to 100 days and ...


    By IWA Publishing

  • MSW and Biosolids Become Feedstocks for Ethanol

    The first commercial facility designed to recover recyclables from municipal solid waste, and utilize the residuals with biosolids as feedstock for ethanol production, is moving forward in Middletown, New York. The Orange Recycling and Ethanol Production Facility, to be built on a 22-acre site adjacent to the Middletown Wastewater Treatment Plant, has capacity to process approximately 230,000 ...


    By BioCycle Magazine

  • Biosolids Composter Satisfies Customers and Neighbors

    A ticket to Penn State football games isn’t the only hard thing to come by in State College, Pennsylvania. So is the biosolids compost produced by State College’s University Area Joint Authority (UAJA) wastewater treatment plant. “For the last four years, we’ve been sold out before we’ve made the compost,” says Stephen Welch, who manages the UAJA composting plant. All biosolids generated — about ...


    By BioCycle Magazine

  • Biosolids Applied to Land: Advancing Standards and Practices

    Summary Wastewater treatment in the United States is a major cornerstone of efforts to keep the nation’s waters clean. Sewage sludge is the solid, semisolid, or liquid residue generated during treatment of domestic sewage. Since the early 1970s, the U.S. Environmental Protection Agency (EPA) and the wastewater treatment industry have promoted recycling of sewage sludge. With the prohibition of ...


  • A Comparison of Fluid Bed and Multiple Hearth Biosolids Incineration

    Abstract Incineration has been used as a disposal method for wastewater treatment biosolids for over sixty years. The first multiple hearth furnace for biosolids incineration was built in 1935 in Dearborn, MI. From that time through the late sixties, the multiple hearth was the thermal technique of choice for biosolids disposal. Today there are still some 150-175 aging multiple hearths in ...

  • Duffin Creek WPCP Evaluation of Biosolids Management Strategies

    The Duffin Creek Water Pollution Control Plant (WPCP) is a conventional activated sludge facility that provides treatment for wastewater from the Regional Municipality of York and Regional Municipality of Durham. The Duffin Creek WPCP has a rated capacity for an average day flow of 364,000 m3/d (80 MIGD). A number of previous studies at the facility have identified that the potential exists for ...


    By XCG Consultants Ltd.

  • Steam injection heating of biosolids & sludge for Anaerobic Digestion

    The article focuses on the integration of Direct Steam Injection (DSI) heating as a method for heating of Municapal, Industrial, Food, & Agricultural wastewater streams. Common applications are anerobic digestion, biogas production, waste de-activation, and FOG (Fats-Oils-Grease) heating. Topics covered include how DSI works, how to select a DSI heater suitable for viscous & difficult to ...


    By ProSonix

  • Planned Biosolids Facility Forms Nucleas for Eco-Complex

    ABSTRACTCatawba County owns and operates the Blackburn Landfill, a sanitary landfill for the disposal of municipal solid waste (MSW). Methane generated within the landfill is collected and utilized to generate electricity which is sold to Duke Power. In the process of combusting methane to generate electricity a significant amount of heat energy is produced, which is not currently utilized. ...

  • Microbial safety of air-dried and rewetted biosolids

    To assess microbial safety of treated sewage sludge (biosolids), we examined the inactivation of microbial indicators for potential bacterial, viral and protozoan pathogens. The levels of indicators were determined throughout the air-drying and storage phases of anaerobically digested sewage sludge. Samples were collected from two wastewater treatment plants (WWTPs) in Victoria, Australia. ...


    By IWA Publishing

  • Biosolids Heat Drying: Safety in Design and Owner Operation

    ABSTRACTInterest continues to grow in heat drying as a means of processing biosolids into an aesthetically pleasing product form with multiple use opportunities, while also achieving a significant reduction in both volume and weight of biosolids for off-site hauling. As the number of heat drying installations increase, so too do reports of safety incidents—an indication that Owners and facility ...

  • Trends in biosolids handling technologies: economics and environmental factors

    Changes in activated sludge technology, with a much greater focus on nutrient removal instead of removal of organics, together with relatively long sludge mean that the primary sludge stream has been lost, and the sludge produced is less degradable. At the same time with the growing importance of sustainable solutions, beneficial agricultural use is being increasingly used. This changes quality ...


    By Cambi AS

  • Growth of microalgal biomass on supernatant from biosolid dewatering

    The paper reports the results of an experiment to assess the feasibility of including a photobioreactor within the design of a wastewater treatment plant, growing microalgae on the centrate from anaerobic sludge dewatering. The growth of algal biomass would take advantage of the available nitrogen and provide a substrate for biogas production by anaerobic digestion. Tests were carried out by ...


    By IWA Publishing

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