玻璃厂废水处理分析与研究

Study on Wastewater Treatment Technology for Glass Industry

在中国玻璃工业中,普遍存在玻璃制造废水未经处理直接排放的现象。虽然这些废水水质相对化工行业来讲污染较轻,但是由于其排放量大,且排放的废水中含有油类、SS、氟及重金属等的污染物,这些污染物对自然环境和人类的危害是严重的,所以玻璃厂废水在排放前必须经过处理。在这篇文章中,分析了某平板玻璃工厂针对原有废水处理工艺效率低的问题,研究了处理系统的改造更新技术,在增加气浮装置的新系统中,通过一个月的调试和运行,其结果证明增加气浮池能深度处理含油物质,同时可以在一定程度上降低含氟物质带来的污染,处理后出水可达《污水综合排放标准》(GB8978-1996)的二级排放标准,并能用于循环系统,降低用水量,提高企业的经济效益。

In China, not all glassworks treat their wastewater before discharge, although the pollution caused by them is not so serious. Because of its large amount, the treatment is needed. Some kinds of pollutant, like oils, SS, F and heavy metals axe harmful to human bodies. In term of a flat-glass works, a new treating process with floatation tank is advocated to improve the existing inefficient treatment process. After one month trial operation, the results show that the new system can not only remove oils in an extend degree, but also reduce F content. The treated wastewater can comply with Grade Ⅱ of Integrated Wastewater Discharge Standard （GB8978-96）, and can be used in water circulating system, reducing the water consumption of the enterprise.