Sludge Composting Articles

  • LCA case study on lawn establishment and maintenance with various peat and compost contents in substrates

    The environmental impacts of the establishment and maintenance of lawn, including the production and use of various substrates, were analyzed by life cycle assessment (LCA). The project focused on comparing substrates with different peat and compost contents using pilot substrates and developed a calculation tool to optimize landscaping from an ecological perspective. The impact categories ...


    By John Wiley & Sons, Ltd.

  • CA waste facility eliminates odor complaints for their organic green waste and sludge composting operation

    The Problem - The large California facility takes in a great deal of green waste (grass clippings, vegetable & fruit waste, leaves and other vegetation) and food processing sludge. It is all combined and recycled into high grade mulch and compost in their site composting operation. The nature of the waste and the composting process leads to the release of high concentrations of odor - ...


    By Benzaco Scientific, Inc.

  • ANFIS approach to the working of a compost–heat extractor

    Composting is an organic sludge management option in which volatile solids are converted to carbon dioxide and water. As the sugar cane press mud undergoes aerobic composting, the bed heats–up to a temperature in the range of 50–70°C, releasing thermal energy and the heat liberated was extracted using a heat pipe. A neural network approach is applied to analyse the data obtained ...


    By Inderscience Publishers

  • Potential utilisation of pulp and paper mill biosolids in composting and plant production: a case study at St. Marys Papers Ltd. (Canada)

    The use of St Marys Paper biosolids as a soil additive or growth cover was investigated. Biosolids were mixed with a commercial potting media in five vol/vol ratios and employed in a greenhouse study. The biosolids were found to improve Pinus banksiana seedling growth, a 50% biosolids:50% ProMix mixture yielding the tallest plants and highest dry mass. To further biologically stabilise the ...


    By Inderscience Publishers

  • A study on Air Filled Porosity evolution in sludge composting

    Air Filled Porosity (AFP) is a key parameter in the composting process, conditioning oxygen availability and heat accumulation. Air pycnometry is considered the most adequate methodology for AFP determination. This technique requires withdrawing a sample of material from the composting mass for AFP measurement, which may alter its physical characteristics. A novel strategy that permits to measure ...


    By Inderscience Publishers

  • Sludge composting, sludge pretreatment and radiation technology: a review

    The paper reviews the state-of-the-art technologies on sludge conditioning and stabilisation. Radiation technology, best contextualised within the concept of Green Chemistry, is yet another developing area of sludge pretreatment. Besides revisiting some important aspects of sludge treatment by composting, this review paper also appraises the application of gamma ray and ultrasound irradiations ...


    By Inderscience Publishers

  • Earthworms helping economy, improving ecology and protecting health

    Earthworms can treat organic garbage, livestock manure and poultry droppings and turn them into premium organic fertilisers, because humus only exists in earthworm feces and castings, compared with other fertilisers. Earthworms can also supply quality animal protein as feed, and offer the best raw materials for the biochemical and pharmaceutical industries. Vermiculture should be put into a whole ...


    By Inderscience Publishers

  • Fertilization of pinus pinea L. seedlings with a sewage sludge-based compost

    Two experiments were conducted to evaluate the effect of a sewage sludge-based compost (SSC) on the growth and mineral composition of containerized Pinus pinea L. seedlings. In the first experiment, five different substrates were tested: four binary mixtures of SSC and peat (100% SSC, 75% SSC, 50% SSC and 25% SSC, by volume) without fertilization, and a control substrate (peat-based substrate + ...


    By SAGE Publications Ltd

  • Effect of urban waste compost application on soil near-saturated hydraulic conductivity

    Received for publication February 22, 2008. Compost application tends to increase soil fertility and is likely to modify soil hydrodynamic properties by acting on soil structural porosity. Two composts, a municipal solid waste compost (MSW) and a co-compost of green wastes and sewage sludge (SGW), have been applied every other year for 6 yr to cultivated plots located on a silt loam soil in the ...

  • Pilot project cuts odor, cost for humanure compost

    Utah Valley Daily Herald Article on the benifits on using micro-pore membrane compost covers when composting highly odorus material.  In February of 2009 Utah Valley's North Sewer Distirict conducted a pilot study to determine the effectivness of mirco-pore membrane compost covers in reducing odors from biosolids (sewage sludge) composting.  Odor testing was conducted over a term of one ...

  • Soil organic matter quality as affected by sewage sludge or as a compost application

    Sewage sludge (SS) or sewage sludge compost (SSC) were applied to soil under controlled conditions, at rates of 0 or 200 Mg ha-1, to investigate changes in dissolved organic matter (DOM), humic acids (HA), and Pb and Zn sorption in the soil. Infrared spectroscopy, visible spectrophotometry, and sorption isotherms (mono-metal and competitive sorption systems) methods were used to assess the ...


    By BioCycle Magazine

  • Attitudes of farmers toward sludge use in the Gaza Strip

    The local production of organic fertiliser in the Gaza Strip is 66,800 m³/year, which represents only 8.5% of the required quantities. This means that farmers have to import 728,000 m³ of organic fertiliser per year, which costs around 10.2 Mio US$. The social survey carried out for more than 300 farmers in the Gaza Strip shows that the scarcity of organic fertilisers and their high prices could ...


    By Inderscience Publishers

  • Compost Dried Primary Sludge – A Renewable Energy Source?

    Abstract Napier is a city of almost 60,000 population on the east coast of the North Island, New Zealand. Napier City Council planned to upgrade its Awatoto Wastewater Milliscreening (0.75mm aperture) plant to advanced primary treatment (APT) and ultraviolet disinfection to improve the quality of discharge to the ocean through the existing 1600m long outfall into Hawke Bay. The APT plant ...

  • Agricultural Use of Different Residual Waste Composts - Current Situation and Experiences in France

    ABSTRACT Quality standards have been recently established in France for sewage sludge composts and other urban composts (greenwaste, biowaste and municipal solid waste composts). These standards allow to guarantee the innocuousness of the composts. Other standards have been defined in order to predict the compost effects on soil properties: the index of biological stability (ISB), based on ...


    By ORBIT e.V.

  • The Man Who Discovered the "Divine Materials" in Compost

    Untitled Document BioCycle July 2004, Vol. 45, No. 7, p. 58 Compost life continues bright, vigorous and upstream for Harry Hoitink, as he ...


    By BioCycle Magazine

  • Oxygen Uptake of Soil and Compost Samples

    Oxygen Uptake of Soil and Compost Samples The Challenge AER-200 aerobic/anaerobic respirometer is ideally suited to determine in-situ rates of oxygen uptake in soil or compost samples – as may occur in the upper layers of soil under natural atmospheric conditions or in mixed compost reactors. This objective is accomplished by using a double-column reactor configuration as illustrated in Figure ...


    By Challenge Technology

  • Conditions for successful composting of industrial Sludges

    The principles of the biological aerobic treatment of industrial sludge, its aims and constraints will first be presented in this paper. The BIOSEC® process, developed by NEXUS Technologies, will than be described in its different phases to approach the technology and the treatment procedure in the best possible way. This presentation would be incomplete without mentioning the costs of the ...


    By ORBIT e.V.

  • Cattail plants’ Biomass as a bulking agent in sewage Sludge composting and the effect of the produced Compost on cattail plants’ Growth

    In every Greek island there is at least one town with more than 20,000 inhabitants. Several smaller towns and villages range from a few hundreds to a few thousands in population. Usually in the larger towns there are sewage treatment facilities providing at least secondary treatment of wastewater. In most cases the effluent produced is drained to the sea and the sludge is dumped in landfills. In ...


    By ORBIT e.V.

  • Composting and biogasification for senna pod waste stabilization

    A medical factory in Finland extracts sennocid from pods of a senna plant with a solvent containing methanol and water. Sennocid is the active compound in some constipation medicines (Otavan Iso Kasvitietosanankirja, 1981). The extraction process produces 50 m3 of pod waste weekly. In 1998, 757 tons of pod waste was produced. The water and methanol contents of the waste are approximately 25 w/w-% ...


    By ORBIT e.V.

  • “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.

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