摘要：In this study,the feasibility and validity of using a conventional inorganic conditioners were detected.An evaluation of the secondary sludge's dewatering,originated from the wastewater secondary treatment unit,which was representatively sampled from the medical complex's wastewater treatment plant at Mosul City,was performed.Alum,as a coagulant,with six doses (100,200,300,400,500,and 600 mg/l),and mixing times were ranged between 5 -60 min.The procedure implies comparing five different coagulant/ sludge ratios (15,20,30,45,and 60) percent,respectively. The results scored that the optimal mixing ratio of alum/sludge was 60%,and the best SRF was achieved at 500 mg/l of alum dose for 60 min dewatering time,i.e.2.954E+12 kg/m.The dewatering capacity of this procedure identifies its good supernatant characteristics and good removal efficiency compared with traditional treatments.
关键词：Sludge dewatering;sludge chemical conditioning;Alum;Buchner funnel;specific resistance to filtration.
