中国电力2018，Vol.51Issue(6)：166-171,6.DOI:10.11930/j.issn.1004-9649.201708200
燃煤电厂脱硫废水预处理装置设计与中试研究
Pretreatment Device Design and Pilot Application of Desulfurization Wastewater in Coal-Fired Power Plants
摘要
Abstract
According to the characteristics of desulfurization wastewater in the coal-fired power plant, the desulfurization wastewater pretreatment method of the integrated softening and clarifying-ultrafiltration is proposed in this paper. The pilot project testing is completed in a coal-fired power plant in Shandong province. The study includes the removal efficiency of integrated softening and clarifying on Ca2+, Mg2+ and the turbidity, the operating pressure of the ultrafiltration system, the flow and turbidity of the product water, and the chemical cost of the pretreatment process. The results show that the content of Ca2+ decreases from 400～660 mg/L to 25 mg/L and the content of Mg2+ decreases from 5310～15689 mg/L to 10 mg/L after the treatment of desulphurization wastewater by integrated softening and clarifying-ultrafiltration, respectively, with the turbidity being no more than 2.0 NTU. The ultrafiltration system operates stably and the turbidity of product water is no more than 0.1 NTU, SDI value is less than 3.0, which can meet the required water quality conditions of the reverse osmosis system. The study results of the integrated softening and clarifying-ultrafiltration can provided important data for the research on the zero wastewater discharge technology in the power plant.关键词
火电厂/脱硫废水/预处理/一体式软化澄清/超滤/废水零排放Key words
power plant/desulphurization wastewater/pretreatment/integrated softening and clarifying/ultrafiltration/zero discharge of wastewater分类
信息技术与安全科学引用本文复制引用
连坤宙,胡特立,王永前,焦绪常,王璟,曹红梅,毛进,樊开远..燃煤电厂脱硫废水预处理装置设计与中试研究[J].中国电力,2018,51(6):166-171,6.基金项目
华能山东发电有限公司科技项目(TL-CA-128-2016A).This work is supported by Science and Technology Project of Huaneng Shandong Power Generation Co., Ltd. (No.TL-CA-128-2016A). （TL-CA-128-2016A）
