title: Slaughterhouse wastewater treatment by combined chemical coagulation and electrocoagulation process.
abstract: Slaughterhouse wastewater contains various and high amounts of organic matter (e.g., proteins, blood, fat and lard). In order to produce an effluent suitable for stream discharge, chemical coagulation and electrocoagulation techniques have been particularly explored at the laboratory pilot scale for organic compounds removal from slaughterhouse effluent. The purpose of this work was to investigate the feasibility of treating cattle-slaughterhouse wastewater by combined chemical coagulation and electrocoagulation process to achieve the required standards. The influence of the operating variables such as coagulant dose, electrical potential and reaction time on the removal efficiencies of major pollutants was determined. The rate of removal of pollutants linearly increased with increasing doses of PACl and applied voltage. COD and BOD(5) removal of more than 99% was obtained by adding 100 mg/L PACl and applied voltage 40 V. The experiments demonstrated the effectiveness of chemical and electrochemical techniques for the treatment of slaughterhouse wastewaters. Consequently, combined processes are inferred to be superior to electrocoagulation alone for the removal of both organic and inorganic compounds from cattle-slaughterhouse wastewater.
authors: Health Promotion Research Center, Zahedan University of Medical Sciences, Zahedan, Iran.
authors: Edris
authors: E
authors: Bazrafshan
authors: Ferdos
authors: F
authors: Kord Mostafapour
authors: Mehdi
authors: M
authors: Farzadkia
authors: Kamal Aldin
authors: KA
authors: Ownagh
authors: Amir Hossein
authors: AH
authors: Mahvi
mesh_terms: D000003:Abattoirs; D000535:Aluminum / Q000737:chemistry; D000536:Aluminum Hydroxide / Q000737:chemistry; D000818:Animals; D002417:Cattle; D004560:Electricity; D004564:Electrocoagulation / Q000295:instrumentation / Q000379:methods*; D004566:Electrodes; D010865:Pilot Projects; D013997:Time Factors; D014865:Waste Disposal, Fluid; D014874:Water Pollutants, Chemical / Q000302:isolation & purification; D018508:Water Purification / Q000295:instrumentation / Q000379:methods*; D060753:Water Quality
chemical_list: D014874:Water Pollutants, Chemical; C016213:aluminum oxychloride; D000536:Aluminum Hydroxide; D000535:Aluminum