Sludge dewatering technology

Journal Article · Thu Apr 01 04:00:00 EST 1993 · Pollution Engineering; (United States)

OSTI ID:6540972

Weismantel, G E

Sludge is an environmental dilemma for many industries, from the process and power industries to the paint and paper industries. Sludge problems exist in production pits and tank bottoms, in plating plants and sewage treatment plants. Flue gas desulfurization systems create enormous amounts of sludge. Dewatering sludge is a multi-billion dollar industry. Sludge dewatering is rarely a single-step process. It can involve several steps, ranging from sludge flocculation and thickening to centrifugation or hydrocycling, clarification, settling and filtering. Sludge dewatering requires an understanding of three major components: the feed stock, the dewatering technology, and the ultimate reuse or disposal of the final product. The characteristics of the feed are important because each dewatering technology reacts differently depending on whether the feed stream is dilute or thick, abrasive or corrosive, fibrous or gelatinous. In addition, factors such as the quantity of feed generated, whether the process is batch or continuous, and minimum and maximum production rates are critical to the choice of dewatering technology. Knowing how the final product will be reused or disposed of helps further narrow the options.

• OSTI ID: 6540972
• Journal Information: Pollution Engineering; (United States), Journal Name: Pollution Engineering; (United States) Vol. 25:7; ISSN 0032-3640; ISSN PLENBW
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
CHEMICAL REACTIONS
DESULFURIZATION
FLUE GAS
GASEOUS WASTES
REMOVAL
SLUDGES
TECHNOLOGY ASSESSMENT
WASTES
WATER REMOVAL