哈尔滨气化厂(达连河)供水系统应对硝基苯污染的措施与效果

介绍了哈尔滨气化厂(达连河)供水水源受硝基苯污染及应急供水措施的制定与实施情况,评价了应急供水工艺对硝基苯的实际去除效果。实践证明,所采取的原水中投加粉末活性炭、强化混凝沉淀、炭砂滤池等应急措施有效可靠,在硝基苯最高超标倍数达到14.22倍的情况下,保证了供水水质,实现了不中断供水的目标。粉末活性炭起到了主要去除硝基苯的作用,在取水口投加、利用11.9km长的输水管道保证充分的吸附时间是技术成功的关键。此次成功的应急供水积累了宝贵的经验,可以供进一步研究参考。

Approach and effect of nitrobenzene removal from Dalianhe water supply system in Harbin Gasification Plant

The water source for Harbin Gasification Plant at Dalianhe town in Heilongjiang Province was polluted by nitrobenzene. Emergent treatment was taken. In this paper the efficiency of nitrobenzene removal of the emergent process was introduced. It is proved that the emergent approaches including PAC dosage, enhanced coagulation sedimentation and carbon-sand filtration are all effective and dependable. At the most unfavorable moment, when the nitrobenzene level was 14.22 times to the allowable, owing to the emergent measures, qualified water was continuously supplied. PAC plays an important role in the emergent period. The key technique is PAC dosing at the water intake, enough adsorption time could be guaranteed by means of the water transportation pipeline with distance of 11.9 km. The successful emergent water supply approach has accumulated rich experiences, which can be used as a good reference for the further study.