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我公司是一个大型的机械制造企业。油布房每天要洗油布六千余块,生产的高峰期达一万块(每块1尺宽、3尺长)。这些油布,擦机器后,大都沾有机油。以前,每年要排放三万多吨含油废水,含油浓度高达1629.72毫克/升,超过了国家排放标准上百倍(国标为10毫克/升),严重地污染了水质。一九八三年,我们建造油水分离池,于一九八四年十月交付使用。这座油水分离池,一年可处理含油废水76500吨,排放浓度在0.5毫克/升以下,远远低于国家排放标准,消除了油污染,收到了一定的经济效益,保护了环境。
Our company is a large-scale machinery manufacturing enterprise. The oil tarpaulin has to wash 6,000 pieces of linoleum every day, and the peak period of production reaches 10,000 pieces (each piece is 1 foot wide and 3 feet long). These tarps, after wiping the machine, are mostly stained with organic oils. In the past, more than 30,000 tons of oily wastewater was discharged every year, with an oil concentration of 1,619.72 milligrams per liter, exceeding the national emission standard by a factor of 100 (GB 10 mg/liter), and polluting the water seriously. In 1983, we built a water separation tank and delivered it in October 1984. This oil-water separation pool can handle 76,500 tons of oily wastewater in one year, with an emission concentration below 0.5 mg/liter, far below the national emission standards, eliminating oil pollution, receiving certain economic benefits and protecting the environment.