biosolids-to-fertilizer process 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.

  • 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 ...

  • 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 ...

  • Control of biosolids cake odors using the new biosolids odor reduction selector process

    ABSTRACT Recent introduction of more efficient dewatering devices that generate higher solids concentrations in dewatered cake has been plagued with the non-desirable side effect of more odorous dewatered biosolids. Previous research has shown that the production of volatile organic sulfur compounds (VOSC’s) such as methanethiol (MT), dimethyl sulfide (DMS), and dimethyl disulfide (DMDS) ...

  • The Bioremediation Process

    Bioremediation allows natural processes to clean up harmful chemicals in the environment. Microscopic 'bugs' or microbes that live in soil and groundwater like to eat certain harmful chemicals, such as those found in gasoline and oil spills. When microbes completely digest these chemicals, they change them into water and harmless gases such as carbon dioxide. In order for microbes to clean up ...


  • 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

  • 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

  • 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

  • Biosolids Minimization using Integrated Alkaline Sludge Hydrolysis and Biological Nutrient Removal Process

     ABSTRACT This paper presents a pilot-scale evaluation of an integrated approach to sludge management utilizing a combination of biological nutrient removal and biosolids alkaline hydrolysis, as well as attempts to explore the impact of recycled alkaline hydrolysates on sludge yield and anaerobic digestion. The novel concept of converting an existing conventional activated sludge (CAS) ...

  • Pilot Testing and Design of an Innovative Biosolids Dewatering Process for Facilities in North Carolina and Georgia

    This paper presents two case studies on pilot testing and design of dewatering systems for municipal biosolids using the Fournier Industries, Inc. (Fournier) rotary press. Since the two municipalities involved have very different types of biosolids, the information presented herein provides a range of expected operating data for this dewatering system. In addition to pilot test information, ...

  • Solar disinfection and lime stabilization processes for reduction of pathogenic bacteria in sewage effluents and biosolids for agricultural purposes in Yemen

    Yemen is the least advanced country among Middle Eastern countries in sewage reuse and safety control. The current sewage effluent quality in Yemen is generally poor as none of the existing sewage treatment plants produces effluents that comply with the effluent quality regulations. There is no plan to build tertiary treatment systems. However, the oxidation and stabilization ponds are ...


    By IWA Publishing

  • Evaluation of a two-stage hydrothermal process for enhancing acetic acid production using municipal biosolids

    A two-stage hydrothermal process aimed at improving acetic acid production using municipal biosolids was evaluated against thermal hydrolysis and conventional wet oxidation process in a 600 ml Parr batch reactor. Thermal hydrolysis was conducted at 140 °C, wet oxidation at 220 °C and the two-stage process, which acted as a series combination of thermal hydrolysis and wet oxidation, at 220 °C. ...


    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

  • Site Constraints + Ammonia Limits + Peak Wet Weather Flow = High Rate Treatment & Biosolids Process Technology for the Heart of the Valley Metropolitan Sewerage District

    The Heart Of The Valley Metropolitan Sewerage District (HOVMSD), located in Kaukauna, Wisconsin, treats wastewater from five communities with a 6.5 mgd pure oxygen activated sludge Wastewater Treatment Facility. Wastewater treatment was originally provided at the site in the 1930’s for the City of Kaukauna. The plant was modified in the late 1970’s as a regional facility consisting of primary ...

  • Modeling the carbon footprint of various biosolids treatment options

    There are a wide variety of processes which are capable of treating biosolids to comply with the pathogen reduction requirements defined by US EPA 503 regulations. Choice of technology is complex and dependent on a number of project specific and economic influences. However, within Europe, long term sustainability and carbon impact are becoming more influential and this is being backed up by ...


    By Cambi Group AS

  • Chemical and toxicological assessment of a full‐scale biosolid compost

    The impact of a full‐scale biosolid composting plant on the fate of a broad range of priority organic pollutants was investigated. Chemical analysis was performed at different steps of the process during two seasons. Simultaneously, the toxicological quality was assessed using estrogen α‐, dioxin‐, and pregnane X‐receptor reporter cell lines. Mass‐balance calculation highlighted the removal of ...


    By John Wiley & Sons, Ltd.

  • In-vessel cocomposting of green waste with biosolids and paper waste

    In comparison to traditional windrow composting, in-vessel composting techniques often represent more effective waste management options due to the reduced production of bioaerosols and leachate and the potential for better process control. Chemical processes occurring during the cocomposting of three common wastes (green waste, biosolids and paper processing waste) were studied using the forced ...


    By BioCycle Magazine

  • Compact scrubber for biosolids odors saves $500,000

    A new scrubber at a Camden, NJ bio solids processing facility uses advanced technology to cut the cost of odor control. The system was designed, built and installed by Bay Products with process design assistance from Lantec Products. A single tower is used to remove malodorous gases from air in two stages having separate sumps for the recirculated scrubbing solutions. The lower stage absorbs ...


    By Lantec Products, Inc.

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