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Controlling Factors in Vacuum Filter Performance

by Sun-nain Ni, Milwaukee Metropolitan Sewage, District, Milwaukee, WI, USA,
Read Warriner, Milwaukee Metropolitan Sewage, District, Milwaukee, WI, USA,
John Moser, Milwaukee Metropolitan Sewage, District, Milwaukee, WI, USA,



Document Type: Proceeding Paper

Part of: Environmental Engineering

Abstract:

Changes in the processes at Milwaukee's Jones Island sewage treatment facilities required testing of the filterability of various mixtures of sludges. The main purpose of the investigation was to determine the dewatering behavior of mixtures containing various proportions of primary sludge and waste activated sludge. At present, vacuum filters are used to dewater waste activated sludge from the Jones Island Treatment Plant which currently employs no primary sedimentation. When the current rehabilitation program is complete, the plant will have primary treatment, and for several years primary and thickened waste activated sludges will be dewatered by vacuum filtration. In addition, lagoon thickened digested sludge from the South Shore Wastewater Treatment Plant is to be dewatered after blending with Jones Island waste activated sludge. These mixtures were also tested in this study.

Subject Headings: Waste treatment plants | Filters | Activated sludge | Waste treatment | Sludge | Sewage | Mixtures

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