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 BOD5 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.
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机译:屠宰场废水中含有各种大量的有机物(例如蛋白质,血液,脂肪和猪油)。为了产生适合于流排放的废水,已经在实验室中试规模上特别研究了化学絮凝和电凝技术,用于从屠宰场废水中去除有机化合物。这项工作的目的是研究通过化学凝结和电凝结合工艺达到所需标准来处理牛屠宰场废水的可行性。确定了操作变量(例如凝结剂剂量,电势和反应时间)对主要污染物去除效率的影响。污染物的去除率随着PACl剂量和施加电压的增加而线性增加。通过添加100 mg / L PACl和施加40 V电压,可去除超过99%的COD和BOD5。实验证明了化学和电化学技术处理屠宰场废水的有效性。因此,从牛屠宰场废水中去除有机和无机化合物的方法被认为优于单独的电凝法。
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