辽阳石油化纤公司化工一厂是以石脑油为原料生产乙烯、丙烯、苯和对二甲苯的石油加工型工厂,含油污水排放较大,尽管经过几年来的努力含油污水量从一九八一年的241吨/时下降到一九八五年的145吨/时,但污染物排放量仍然比较高,污水含油在300～400mg/L,CDO 在600～700mg/L 左右。为了减少污染物排放量,提高排污水 Liaoyang Petrochemical Company chemical plant is a naphtha-based raw materials to produce ethylene, propylene, benzene and p-xylene processing plants, large oil-water discharge, although after years of efforts to oily wastewater from 1981 241 tons / year dropped to 145 tons / hour in 1985, but the pollutant discharge was still relatively high. The oil content of the sewage was 300-400 mg / L and the CDO was about 600-700 mg / L. In order to reduce pollutant emissions, raise sewage water