In view of the phenomenon of water bubbling up from the top of the multi-media filter occurs when filtering the recycling water in the pre-treatment stage of the wa-ter desalination process of a desalination station of Beijing Shougang Co.,Ltd.,the top ex-haust valve,water cloth,filter material,backwash discharge pipeline,air source pneumatic valve,operation mode,operation method and other factors of the filter were analyzed,and the paper puts forward to adapt the stainless steel float,optimize the water distributor,re-place the filter media,backwash discharge pipeline dredging and other measures to solve the problem.

在某钢铁行业水处理系统中,通过采用超滤+反渗透双膜法为核心水处理工艺,使水资源循环利用率得到大幅度提升,解决了水资源紧张的问题.介绍了中水回用中的双膜法处理工艺流程及运行参数等,并说明在实际运行中的注意事项.通过合理控制各项运行参数,及时清洗设备等措施,保证了设备正常稳定运行,且延长了其使用寿命.

针对炼钢板坯结晶器供水系统在冬季供水温度低的问题进行分析,提出了技术改造措施并实施.阐述了改造后的优化控制措施,保证了板坯浇钢前所需的供水温度,减少了废坯的生成率,为保证板坯生产的高效,稳定奠定了基础.

针对高炉联合泵站炉下闭式塔运行存在工业水浪费严重和风机传动系统耗材损失大等问题,采取了改变闭式塔中循环工业水的循环方式和闭式塔风机节能改造等措施;针对炉下水泵在两用两备的运行方式下已经无法提供足够冷却循环水流量的问题,应用三元流动技术,重新设计、选型和安装了新的节能泵.对联合泵站炉下闭式塔和炉下水泵节能改造后,经济效益显著.

介绍了超滤膜在中水回用中的应用,作为反渗透系统的预处理装置,通过加强超滤膜系统的日常运行管理,保证反渗透系统的安全运行,延长反渗透膜的使用寿命.

阐述了热轧浊环水处理系统高速过滤器反洗水处理工艺,通过典型案例的分析发现热轧浊环水处理系统高速过滤器反洗水处理工艺运行过程中存在平流沉淀池、反洗水调节池和污泥浓缩池积泥,热轧浊环水水质超标和板框压滤机出泥率低等缺陷.通过采取工艺优化措施,热轧浊环水处理系统高速过滤器处理后的热轧浊环水水质明显提高,出泥量增加,平流沉淀池、反洗水调节池、污泥浓缩池积泥减少,污泥处理设施故障率低,从而降低了设备维护和备件费用,实现了设备自动化运行,系统运行效果良好.

The water supply requirements for the closed circulating cooling water system of desalted water for continuous caster mould must be constant pressure,stable water quality and water temperature meeting the needs of production.Taking for example the closed circulating cooling water system of desalted water for No.3 slab caster mould,it analyzes how to ensure stable water supply pressure of the system,water quality reaching standard,water temperature meeting the needs of production,closed cooling tower against freezing in winter and copper tube against frost crack.The corresponding technical reconstruction for process has been made and the above problems have been settled effectively.