焦化厂废水深度处理工艺研究分析

Research Analysis of Sewage Advanced Treatment Technology for Coking Plant

水资源是人类赖以生存的基础,是社会得以持续发展的保障。目前国内大多数焦化企业都面临两个难题:一是工业用水紧张,焦化行业是一个用水量较大的行业,需要大量的"新水"用作循环冷却水补充水和锅炉补给水。二是需对大量高浓度焦化废水进行有效处理,以达到保护环境、清洁生产的目的。通过采用污水深度处理技术可以很好地解决以上两个问题,进行水资源的循环再利用。整套工艺分为两个系统,分别为循环水处理系统采用高效澄清+过滤+超滤+反渗透处理工艺;废水处理系统采用高效澄清+生化处理+反渗透处理工艺。经过深度处理后的水在达到环保要求的同时,又重新进入工业生产水系统中,为企业节能减排、降耗增效发挥了巨大作用。

Water resources is the foundation of human life and the guarantee of sustained society development. At present, most domestic coking enterprises are facing two problems： the first is the tense industrial water, coking industry is the industry needing a large number of water consum ption and it needs a lot of new water used as for circulating cooling water make-up water and boiler make-up water. The second is the effective management of coking sewage with a large number of high concentration so that to achieve the purpose of environmental protection and clean production. Adopting the sewage advanced treatment technology is a good way to solve the above two problems,and then take cyclic utilization of water resources. The whole process was divided into two systems--circulating water treatment system adopting efficient clarification＋ ultrafiltration ＋ reverse osmosis treatment process and wastewater treatment system adopting efficient clarification ＋ biochemical treatment ＋ reverse osmosis treatment process. After advanced treatment of sewage, it can meet the environmental requirements,at the same time it comes back into the water system,which has played a huge role of energy conservation, emissions reduction, adding-effect,and reducing-consumption for the enterprise.