喷涂房循环水槽涂漆解黏处理技术

Paint detackification technology for recirculated water trough at paint spray booth

在工业喷漆生产线,大约有25%～60%的涂漆由于超过量喷涂而损耗。在大型喷漆作业线如汽车行业,过喷的涂漆会被循环水系统所收集,然后采用传统的化学涂料解黏系统进行处理。本文介绍了循环水槽涂漆常用的化学、生物及生化处理工艺,并对结合了化学-生物处理方法开发出来的KleerAid生化涂漆解黏工艺与传统工艺进行了比较。生产应用表明,该生化工艺对水质的COD值、总悬浮物值、污泥含水率、污泥的解黏程度均优于传统的化学解黏工艺,提高了整体循环水处理的成本效益。

In industrial painting lines, approximately 25% 60% of the paint is wasted as overspray, and the overspray paint is collected and treated in water-based solutions using traditional chemical paint detackification systems in large operation line such as automobile industry. In this paper, traditional chemical, biological and biochemical paint detackification process are reviewed. A trial run was conducted by comparing a traditional chemical treatment and a biochemical technology - KleerAid, which combines latest biotechnology with chemical paint detackification technology. It was found that the use of biochemical treatment method can resulted in a lower averaged COD and total suspended solid in recycle water and a reduced water content and stickiness of the sludge as compared with the traditional detackification chemistry. The use of biochemical technology has demonstrated an improvement in detackification performance and overall cost-effectiveness of the recirculated water treatment at the spray booth.