Thickening of Sewage Sludge

THICKENING OF SEWAGE SLUDGE

International water conservation policy has focused especially on advanced waste water treatment. The inevitable consequence: a worldwide increase in the sewage sludge volume. How can the municipalities dispose of the growing volume in an environmentally acceptable and cost-effectively? The solution is highly efficient dewatering, leaving as few residuals as possible. Because the higher the solids concentration of the sewage sludge is, the more economical the further processes are.

Designed and constructed for high clarification efficiency and wide solid concentration, the different decanter models are not only products of Huading Separator experience but also incorporate the constantly changing results from the field. The result: high-performance decanter centrifuges that not just meet all the demands made on them but also surpass them in many respects, achieving wide benefit for the user.

Advantages of mechanical thickening with centrifuges include a reduction in the load on the digester and improved digestion with higher gas yields, and improved volatiles destruction.

Regulatory restrictions on phosphorous and nitrogen levels have made the thickening of waste-activated sludge necessary. Mechanical thickening cuts capital costs substantially and results in up to a 90% decrease in sludge volumes. Advantages of mechanical thickening with centrifuges include a reduction in the load on the digester and improved digestion with higher gas yields, and improved volatiles destruction.