火电企业水资源综合利用及污染防治技术路线探讨

Discussion on the Comprehensive Utilization of Water Resources and the Technical Route of Pollution Prevention in Thermal Power Plants

调研了91家火电企业,分析水务管理工作存在的问题,结合政策形势,探讨了水资源利用及污染防治的技术路线。技术路线分两步实施,第一步为全厂用水优化,实现水资源的梯级利用和分质处理、回用,实现高盐废水最少化;第二步为废水综合治理改造,无法回用、消耗及外排的高盐废水统一进入废水综合治理系统,通过预处理软化、浓缩减量、蒸发除盐及固废处置,实现废水回收利用。为火电企业探索水污染防治及综合利用提供参考。

This paper analyzes the existing problems in water affairs management in 91 thermal power enterprises,and discusses the technical route of the water resources utilization and pollution prevention based on the current policies.The technical route is implemented in two steps.The first step is to optimize the water use of the whole plant by realizing the cascade utilization,the quality treatment and the reuse of water resources,and to minimize the wastewater of high salinity as well;the second step is the comprehensive treatment and transformation of the high salt wastewater,which cannot be reused,consumed and discharged,into the integrated wastewater treatment system.The waste water recycling can be realized through pretreatment softening,concentration reduction,evaporation desalination and solid waste disposal.It provides reference for the thermal power enterprises to explore the pollution prevention and comprehensive utilization of water resources.