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2020/8/5/ · We have used 3-6-9-12 Mg/ha of sewage sludge compost for the treatments C3, C6, C9 and C12, respectively, and 6 Mg/ha of sewage sludge compost in combination with 60 kg/ha of ammonium nitrate for

2015/5/5/ · Introduction. Composted organic waste from households, businesses, yards and parks, food processing and agricultural waste, as well as sewage sludge from municipal sewage treatment plants contains a host of valuable plant nutrients. Rich in nitrogen, phosphorous, potassium and trace elements such as copper and zinc, such

2019/4/16/ · The paper provides data on the analysis of industrial soil based on sewage sludge with the aim of using it for the restoration of disturbed and contaminated lands. The first experiments using ...

2023/6/1/ · In this study, a pilot-scale co-compositing process using sewage sludge and plant biomass in Japan was used as a model for a local circular bioeconomy.Heavy metal concentrations in the developed sewage sludge compost (NSSC) were lower than the threshold values of composts reported worldwide, and the fiber content was higher

Sewage sludge treatment describes the processes used to manage and dispose of sewage sludge produced during sewage treatment. Sludge treatment is focused on reducing sludge weight and volume to reduce transportation and disposal costs, and on reducing potential health risks of disposal options. Water removal is the primary means of

2023/4/1/ · The co-composting of the sewage sludge and rice husk reduced TOC losses. Villaseñor et al., (2011) reported that in the composting of domestic sewage sludge with different natural materials in a rotary drum reactor, the carbon loss in the reactor containing 25 % mordenite was 58 % (Villaseñor et al., 2011). In the composting of

A 25 kg of municipal solid waste was mixed with 5 kg of sewage sludge so as to make 5:1 ratio for composting. Composting was done by using a box model composter made up of wood with proper aeration and drainage facility and was kept in semi sun rays condition. pH ranging 7.1 in the first phase, 5.9 in the middle phase,

Experiments were conducted using mixtures of rice straw (RS) and sewage sludge (SS). For the purposes of this study, the composting process was evaluated during two different seasons, season 1 (S1

Composting is controlled fermentation that converts organic matter aerobically and produces stable humic and pre-humic compounds (figure 1). Aeration will only be effective if the medium is air-permeable. Dewatered sludge often has a low porosity; a bulking agent has to be added, usually in the form of a carbonaceous support (20% of the mixture

2010/11/24/ · To compare the carbon emissions of two sludge composting technologies, this study took 1 ton of excess sludge (80% water content) from a wastewater treatment plant as the research object. The two sludge composting technologies investigated were aerobic composting and vermicomposting. The process flow and

2020/5/8/ · Composting is a type of aerobic digestion. Sewage sludge can be combined with other waste materials such as wood chip, straw or green wastes prior to composting to provide a pasteurised product. Around 20−30% of the volatile solids can be converted to carbon dioxide through composting. Composting employs natural

2020/8/5/ · The adoption of sewage sludge as an agricultural management strategy to improve soil properties and crop production is attracting great interest. Despite many positive effects on soil inorganic and organic components reported for different soil types, little information is available on sewage sludge application on Mediterranean soils, as well as

sewage sludge can vary from 20% to 50% by volume, depending on the species and age of plants (Falahi-Ardakani et al., 1987a). A potting media mix of one-third each by volume of peat, perlite, and compost made from sewage sludge and sieved through a 1.25-cm mesh, will supply the N needs of bedding plants and vegetable

2014/2/1/ · Total heavy metal content (Pb, Cr, and Cd) in the final compost is lower than that of activated sludge. After 6 mo of co-composting, activated sludge-palm waste meets the standards of AFNOR, 1993 and our compost is classified as category A. This final product may be used in agriculture as a fertilizer for the soil without any contamination of