May 5, 2015 · 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 compost is used as an
Sep 1, 2023 · A careful assessment of the characteristics of sewage sludge is required prior to its soil application to improve the soil health without causing environmental hazards [27]. Hence, the aim of the research is to determine the quality of sewage sludge generated at the Kumasi Wastewater Treatment Plant. 2. Materials and 2.1. Study area
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Apr 19, 2019 · 2. The global production of sewage sludge and the main directions of its management. At the European scale, the 91/271/ECC urban wastewater treatment directive adopted in May 1991 imposed the collection and treatment of wastewater in agglomerations with a population equivalent (PE) of more than 2000.
Dec 24, 2021 · Wastewater treatment generates a huge amount of sewage sludge, which is a source of environmental pollution. Among the alternatives for the management of this waste, industrial composting stands out as one of the most relevant. The objective of this study was to analyze the bacterial population link
Aug 17, 2021 · In this study, the operations of six industrial composting facilities that process municipal solid waste and sewage sludge were evaluated from the point of view of the sanitation achieved and the quality of the compost produced.
Oct 27, 2015 · Environmental Monitoring and Assessment - In order to use sewage sludge (SS) composts in agriculture, it is extremely important to estimate the quality of compost products. The aim of this study
Sludge Composting. According to statistics there are nearly 600 sewage treatment plants in China at present. And the sludge generated during the sewage treatment process is about 0.3-0.5% of the sewage treatment capacity. If we calculate based on this data, China’s municipal sewage treatment plants discharge is about 1.4 x 10t/a of dry sludge.
Jan 14, 2021 · 28 Citations. Metrics. In present study, the effects of carbon sources on compost process and quality were evaluated in the lab-scale sewage sludge (SS) composting. The composting
This study investigated the effects of phosphogypsum, superphosphate, and dicyandiamide on gaseous emission and compost quality during sewage sludge composting. Results showed that phosphogypsum reduced ammonia (NH 3 ) and methane (CH 4 ) emissions but increased nitrous oxide (N 2 O) emission.
Nov 18, 2018 · The composting technical currents give little attention to the type and chemical composition of biomass that are mixed not considering that these can affect quality and maturity of the compost
Oct 28, 2021 · The European Sewage Sludge Directive (86/278/EEC) seeks to encourage the use of sewage sludge in agriculture. It prohibits the use of untreated sludges (except where injected or otherwise incorporated into soil) and defines the treatment of sludge as "biological, chemical or heat treatment, long-term storage or any other appropriate process so
Oct 1, 2022 · The great majority of urban areas utilize a shared drainage system. Municipal sewage, runoff, and treated industrial wastewater are jointly drained to WWTP. Heavy metals, microplastics and other contaminants (Kuoppamaki et al., 2021) contained therein will gradually accumulate in WAS. This potential environmental hazard increases the complexity
Aug 17, 2021 · In this study, the operations of six industrial composting facilities that process municipal solid waste and sewage sludge were evaluated from the point of view of the sanitation achieved
SEWAGE SLUDGE 3 2.1 Definitions 3 2.2 Quantitative characteristics of sewage sludge 4 2.3 Composition of sewage sludge 5 2.3.1 Valuable or non -dangerous fraction 5 2.3.2 Pollutants 8 3. ALTERNATIVE SEWAGE SLUDGE MANAGEMENT PRACTISES 21 3.1 Overview of and trends 21 3.2 Landfilling 23 3.2.1 Anticipated impacts 26
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