biosolids-to-fertilizer Articles

  • “Jerez guadalete w.w.t.p.”: from sludge to biosolids, and finally e.u. ecological fertilizer?

    ‘Guadalete W.W.T.P’ began its operations in January 1994 in ‘Jerez de la Frontera’, in the province of Cádiz, southwestern Spain. 15.000 t of anaerobically digested dewatered sludge has been produced on a yearly basis over the last four years. An 11 hectares open-air windrow composting facility, privately owned and operated, has permitted sludge to be transformed into biosolids compost. Compost ...


    By ORBIT e.V.

  • Biosolids- Considering the Types, Applications and Biosolids Drying Methods

    While some water treatment plants are meant to simply make the sludge safe enough to dispose of, most facilities continue to treat the sludge so that the material can be put to good use in their communities. Once sludge is treated and processed to meet EPA safety standards for productive use, the resulting nutrient-rich organic material is termed as biosolids. ...


    By IWA Publishing

  • Ultrasonic pre-treatment of biosolid

    Low-frequency and high-intensity ultrasonic treatment of biosolid is a good method for biosolid disintegration. So, as a pre-treatment method of anaerobic digestion, it may replace the hydrolysis. Thus, we studied the effect of ultrasonic disintegration of biosolid at different ultrasonic power densities. Results showed that the Soluble Chemical Oxygen Demand (SCOD), Total Nitrogen (TN), Total ...


    By Inderscience Publishers

  • 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

  • A Sustainable Use for Dried Biosolids

    Lehigh Cement Company has conducted preliminary and in depth testing of Class A dried biosolids (DBS) as a fuel replacement in our cement kiln at Union Bridge, Maryland. Lehigh’s parent company, Heidelberg Cement, has been using DBS in European cement kilns for several years. These programs have proved the safety and environmental soundness of this concept. Lehigh’s ongoing development of these ...

  • 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

  • Biosolids ban struck down

    In 1994, Los Angeles County Sanitation Districts (LACSD) bought a 4,700-acre farm (called Green Acres Farm) in southwest Kern County for the purpose of land applying biosolids from its 11 wastewater treatment plants. LACSD land applied 800 wet tons/day at this site for several years. In 2006, Kern County voters passed Measure E on the ballot with 83 percent approval. This measure banned ...


    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

  • 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

  • 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 ...

  • The longer-term phytoavailability of biosolids-phosphorus

    Phosphorus based nutrient management could limit biosolids application to rates based on crop fertilizer P recommendations (P-based rates). Determinations of biosolids P phytoavailability relative to inorganic P fertilizers are necessary when P-based rates are mandated. Previous shorter-term (≤4 mo) studies successfully distinguished P phytoavailability differences among biosolids, but the ...

  • Economic value of biosolids in a semiarid agroecosystem

    Over half of the municipal biosolids generated in the United States are being applied to agricultural land. More information is needed on crop response to biosolids application and on the optimal level of the application from an economic prospective. With this in mind, data from two sites used in a long-term biosolids application study of an Eastern Colorado wheat (Triticum aestivum L.)–fallow ...

  • 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 ...

  • 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

  • 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. ...

  • 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 LLC

  • 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

  • Environmental technology verification (ETV) of Biosolids product

    Location: Vancouver, B.C. Description: A biorecovery facility was seeking to use its product as animal feed supplement. The facility treats biodegradable wastes using an Autothermal Thermophilic Aerobic digestion (ATAD) process. The ETV verification program involved developing a sampling protocol followed by a sampling program that included extensive analytical testing ...


    By NovaTec Consultants Inc.

  • 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

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