The Use of Biochemical Processes in Sludge Treatment
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Abstract
The feasibility of using combination of effective microorganism (EM1) and conventional chemical conditioner was evaluated in this study to assess and discern the dewatering properties of the secondary sludge that produced from wastewater treatment plant of the medical assembly in Mosul city 9Conventional coagulants such as lime, Alum, and ferrous sulfate, six doses for each coagulant type i9e)5 - 30()10 - 60 (and (25 -
150mg/l ( respectively, were used in the sludge conditioning processes for enhancement of the sludge dewatering capacity 9The characteristics of conditioned sludge, such as specific resistance of filtration (SRF( were determined at each dose9Experimental results indicated that effective microorganism seeds have a passive effect on SRF value which was about )% 7194(and (%75(in lime and ferrous sulfate respectively9While in Alum conditioning process a significant effect on SRF reduction was accomplished which was about %)-4799( and ( - % 3298( for effective microorganism and Alum dose increments respectively 9The best Alum dosage, for minimum SRF 0998348×10 12 m /kg, was 60 mg/l at 1 % of effective microorganism 9
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