Sludge Recycling Articles

This paper studied denitrifying phosphorus removal of a novel two-line biological nutrient removal process treating low strength domestic wastewater under different sludge recycling ratios. Mass balance of intracellular compounds including polyhydroxyvalerate, polyhydroxybutyrate and glycogen was investigated together with total nitrogen (TN) and total phosphorus (TP). Results showed that ...

Sep. 12, 2016

By IWA Publishing

In conventional treatment of variable quality mountain water, an inability to immediately adjust the coagulant dose to variations in water quality causes overdose or underdose of coagulant in relation to its optimal value. The results of the research showed that the reuse of post-coagulation sludge was an effective method to maintain high and stable coagulation effectiveness under both ...

May 16, 2016

By IWA Publishing

Basic Oxygen Furnace (BOF) sludge is one of the by–products generated during process of steel making. It has very high level of iron oxide and lime content. However, the high moisture content of the BOF sludge (35–40%) is a major obstacle in its recycling. Internal recycling of the BOF sludge, with or without pre–treatment, is an integral feature of integrated steel plants in advanced countries. ...

Sep. 25, 2012

By Inderscience Publishers

The process of anaerobic thermophilic digestion of municipal wastewater sludge with a recycled part of thickened digested sludge, was studied in semi-continuous laboratory digesters. This modified recycling process resulted in increased solids retention time (SRT) with the same hydraulic retention time (HRT) as compared with traditional digestion without recycling. Increased SRT without ...

Dec. 31, 2011

By IWA Publishing

North Shore Sanitary District (NSSD) selected Minergy’s GLASSPACK® system as the technology of choice for sustainable biosolids management at its new Sludge Recycling Facility located in Zion, Ill., U.S.A. NSSD’s Sludge Recycling Facility incorporates Minergy’s GLASSPACK® vitrification technology to harness and use the energy contained in biosolids to create an inert, beneficially reusable glass ...

Oct. 29, 2007

By Minergy Corporation Limited