不锈钢分公司中水回用的研究

Study on Water Reuse at Stainless Steel Branch

吨钢耗新水指标是衡量钢铁联合企业水耗水平的一个重要指标,宝钢股份不锈钢分公司能源部为了降低公司吨钢耗新水指标,着手研究公司生活污水、生产废水的回用工作。分析了全厂污水站外排水深度处理的难点技术,对比了几种除盐方法,提出了反渗透技术的优势及关键点。拟通过新建公司中水站,将部分过滤水与部分脱盐水相互掺合,既达到了目的,又节约了成本,最终将公司部分生活污水、生产废水通过深度处理,达到或高于工业水水质标准,直接用于生产。

Fresh water consumption per ton of steel is an important indicator to water consumption level of an iron ＆ steel complex. In order to reduce the consumption, the Energy Department of Baosteel Stainless Steel Branch has started with the research work on recycling waste water from daily life and production. Technical difficulties of intensive treatment of wastewater discharged from the Branch＇ s sewage stations are analyzed, different deionization methods are compared, and advantages and key points of reverse osmosis technology are put forth. A new water reuse station is planned to be built for mixing infiltrated water with deionized water,which will reduce the cost and meet the demands of production simultaneously. Wastewater treated in depth has reached and even exceeded the standard of industrial water, and can be used in production directly.