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首页> 外文期刊>American Journal of Chemical Engineering >Tannery Wastewater Treatment by Coagulation-Flocculation Technique Using Combination of Calcium Polysulfide and Ferrous Sulphate
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Tannery Wastewater Treatment by Coagulation-Flocculation Technique Using Combination of Calcium Polysulfide and Ferrous Sulphate

机译：用凝聚 - 多硫化钙和硫酸亚铁的组合进行凝固 - 絮凝技术的制革废水

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摘要

Effluents from the tannery industry have been a major source of environmental pollution. There is a need to evaluate the performance of wastewater treatment plant against regulatory standards. If in compliance found with standard, Employing appropriate treatment technique to meet the permissible discharge is important. In this reaction, performance evaluation of Tannery Wastewater and Treatment by coagulation technique of wastewater was investigated. Chemical oxygen demand (COD), Dissolved oxygen (DO), Total dissolved solids (TDS), Total suspended solids (TSS), chromium III and VI were the parameters selected to characterize the tannery waste water. From the characterization result of the factory effluent treatment plant it was found that; the factory effluent treatment plant meets the permissible discharge value in DO, Chromium III and VI. However, COD, TDS and TSS are far from the standards. Calcium polysulfide (CaSx) and ferrous sulphate (Fe(SO)_(4)) were the chemicals used for coagulation purpose. Treatment of 500ml original tannery waste with 400mg iron sulphate and variable calcium polysulfide concentrations (one, two and four v/v %) was conducted and characterized. From characterization result, 400mg iron sulphate and 20ml of calcium polysulfide treatment yields water that full fill the standard of discharge limit except for COD. In addition, at this treatment the best closer value of COD (1340mg/l) to the standard value (250mg/l) was found.
机译：来自制革厂行业的污水一直是环境污染的主要来源。有必要评估废水处理厂对监管标准的性能。如果符合标准的标准，采用适当的处理技术以满足允许的排放是重要的。在该反应中，研究了制革废水的性能评估和废水凝固技术的处理。化学需氧量（COD），溶解氧（DO），总溶解固体（TDS），总悬浮固体（TSS），铬III和VI是选择的参数，以表征制革废水。从出厂流出物处理厂的表征结果，发现了;工厂污水处理厂符合DO，铬III和VI的允许排放值。但是，COD，TDS和TSS远非标准。多硫化物（Casx）和硫酸甲铁（Fe（SO）_（4））是用于凝固目的的化学品。用400mg铁硫酸铁和可变钙多硫化物浓度（一种，两和四v / v％）处理500ml原始制革废物。从表征结果，400毫克硫酸铁和20mL钙多硫化物处理产生水，其水充满了鳕鱼以外的放电极限标准。此外，在该处理地发现，发现鳕鱼（1340mg / L）的最佳值（1340mg / l）被发现。

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