sewage sludge


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sewage sludge

[′sü·ij ‚sləj]
(civil engineering)
A semiliquid waste with a solid concentration in excess of 2500 parts per million, obtained from the purification of municipal sewage. Also known as sludge.
References in periodicals archive ?
With rapid urbanisation advances in each country of Southeast Asia, the shortage of electrical power generation as well as the processing of sewage sludge and food waste has become a major problem.
It becomes evident, therefore, the need to minimize the environmental impacts caused by the utilization of sewage sludge in agricultural systems, reducing as much as possible the concentrations of any contaminants present in the waste.
The benefits of using sewage sludge as fertilizer has been proven by numerous studies.
The objective of this study was to evaluate the suitability of using sewage sludge biochar to grow eucalyptus seedlings in a greenhouse condition, and compare the result with those of plants treated with sewage sludge.
The huge quantities of sewage sludge produced worldwide and the increasing costs of chemical fertilizers have made agricultural reusing sewage sludge an attractive option.
The sewage sludge used was obtained from a national sewerage company Indah Water Konsortium (IWK) Sewage Treatment Plant at Bandar Tun Razak, Kuala Lumpur, Malaysia.
Several countries have regulated use of sewage sludge in agriculture, which are mainly based on heavy metal content of soil, regarding soil type and metal uptake by plants.
A few years ago Switzerland banned the use a sewage sludge as a fertilizer because the government considered there were long-term risks to the environment and human health.
Standard methods [8] were used to determine the principal properties of the soil and sewage sludge samples; each sample was analyzed in triplicate.
The experiment will involve constructing a plant to produce methane gas by efficiently fermenting sewage sludge and purifying the product, as well as a facility to process the sludge remnant into solid fuel after the gas is taken out.