Title: Actual scale experiment of selector application and the situation of bulking sludge problem in southern Thailand

Authors: Panalee Chevakidagarn; Duangporn Kantachote; Udomphon Puetpaiboon

Addresses: Faculty of Environmental Management, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand. ' Faculty of Science, Department of Microbiology, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand. ' Faculty of Engineering, Department of Civil Engineering, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand

Abstract: Activated Sludge Process (ASP) was applied to effluent from factories in southern Thailand. To increase their treatability using a limited land area for the treatment plant, the ASP was mainly designed for carbon removal. A survey of 17 wastewater treatment plants, in the concentrated latex rubber and seafood industries, was conducted. An actual scale experiment of selector application was carried out at a representative treatment plant. The selectors could change the type of filamentous bacteria from type 0041 to type 1851. The parallel type of selectors, gave a better total removal capacity than ASP without selectors.

Keywords: activate sludge; bulking sludge problem; selector application; Thailand; effluent; wastewater treatment; latex rubber industry; seafood industry; carbon removal; selectors; environmental pollution.

DOI: 10.1504/IJEE.2012.048086

International Journal of Environmental Engineering, 2012 Vol.4 No.1/2, pp.137 - 144

Available online: 19 Jul 2012 *

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