各种技术,如物理,化学,生物,高级氧化和电化学用于处理工业废水。常用的常规生物处理工艺耗时,需要较大的操作面积,对含有有毒元素的废水无效。高级氧化技术导致高处理成本,并且通常用于获得高纯度等级的水。化学混凝技术速度慢,产生大量污泥。由于其多功能性和环境相容性,电凝聚作为处理工业废水的潜在技术最近引起了人们的注意。该技术使用浸入流出物中的金属电极之间的直流电源,这导致电极板溶解到流出物中。金属离子,在适当的pH值,可以形成广泛的凝结物质和金属氢氧化物,使颗粒不稳定并聚集或沉淀并吸附溶解的污染物。因此,本手稿的目的是回顾电凝聚处理工业废水的潜力,主要从纺织废水中去除染料。
Various techniques such as physical, chemical, biological, advanced oxidation and electrochemical are used for the treatment of industrial effluent. The commonly used conventional biological treatment processes are time consuming, need large operational area and are not effective for effluent containing toxic elements. Advanced oxidation techniques result in high treatment cost and are generally used to obtain high purity grade water. The chemical coagulation technique is slow and generates large amount of sludge. Electrocoagulation has recently attracted attention as a potential technique for treating industrial effluent due to its versatility and environmental compatibility. This technique uses direct current source between metal electrodes immersed in the effluent, which causes the dissolution of electrode plates into the effluent. The metal ions, at an appropriate pH, can form wide range of coagulated species and metal hydroxides that destabilize and aggregate particles or precipitate and adsorb the dissolved contaminants. Therefore, the objective of the present manuscript is to
review the potential of electrocoagulation for the treatment of industrial effluents, mainly removal of dyes from textile effluent.