Studies on the completely mixed activated sludge treatment of fellmongery and tannery lime-sulphide effluents

Rawlings, Douglas Eric

Title: Studies on the completely mixed activated sludge treatment of fellmongery and tannery lime-sulphide effluents
Creator: Rawlings, Douglas Eric
Subject: Tanneries -- Waste disposal
Subject: Sewage sludge -- South Africa -- Management
Subject: Sewage -- Purificiation -- Biological treatment
Subject: Water quality management -- South Africa
Subject: Water -- Purification -- Biological treatment -- South Africa
Date Issued: 1977
Date: 1977
Type: Thesis
Type: Doctoral
Type: PhD
Identifier: vital:4112
Identifier: http://hdl.handle.net/10962/d1013052
Description: Industries producing highly polluted waste waters are having to purify their effluents to meet with ever increasing requirements laid down by water authorities. The South African Water Act of 1956 has prescribed a very high standard to which waste waters must conform before discharge into a South African water course. Enforcement of these standards falls under the jurisdiction of government authorities such as the Department of Water Affairs. Similarly, municipalities and other local authorities set standards with which trade effluents must comply before discharge into public sewers for treatment in a municipal sewage works. These local authorities are empowered to recover from the trader the additional costs incurred in treating trade effluents. Costs are usually levied in respect of volume, oxygen demand, settleable solids and the production of secondary sludge. In recent years, these standards have been enforced to an extent where the survival of several industries has become dependant on whether these industries are able to purify or dispose of their effluents in a manner acceptable to the water authorities. Chap. 1, p. 1.
Format: 174 leaves
Format: pdf
Publisher: Rhodes University
Publisher: Faculty of Science, Biochemistry and Microbiology
Language: English
Rights: Rawlings, Douglas Eric

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