ENVIRONMENTAL SOLUTION FOR EFFLUENT OF TILE INDUSTRY

Environmental engineering

The clarification of ceramic tile industrial wastewaters by solid–liquid separation techniques and the removal of suspended and colloids particles are the problems of growing environmental consciousness. However, there appears to be very limited number of studies reported in the literature to investigate the flocculation and settling properties of ceramic wastewaters. In this study, types of coagulants concentration and quantity were investigated for solid-liquid separation processes. This study was conducted to simulate coagulation and flocculation process efficiency with an interest to eliminate turbidity of wastewater in order to produce recyclable water with turbidity less than 20 NTU. The experiment was conducted using jar tests to determine the optimum dosages of alum, fecl3, polyelectrolyte and lime. The results showed that the optimal operating pH was 7-8 achieved by adding alum, fecl3, polyelectrolyte and lime dosages in the range of 4-48 mg/L, 0.2-1.2 mg/l, 0.1-0.6 mg/l and 10-60 mg/L, respectively. Alum, Fecl3, polyelectrolyte and lime dosing resulted in significant removal of turbidity which could lead to water and cost is saving. This study concluded that coagulation and flocculation may be a useful primary wastewater treatment process for the ceramic industry.

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