摘要
针对某热电厂石灰石-石膏法烟气脱硫工艺废渣处理系统产生的脱硫废水,采用化学沉淀工艺进行处理,经过一年的运行发现其技术可靠、稳定,对悬浮物、COD、氟化物、汞、硫酸盐的去除率分别达到99.5%、98.3%、87.5%、99.8%、85.6%,对应出水浓度分别为54、20、9.6、0.04、980 mg/L,出水水质满足并优于《火电厂石灰石-石膏湿法脱硫废水水质控制指标》(DL/T 997—2006)的要求,且电费和药剂费合计仅为6.65元/m^(3)。
The desulfurization wastewater generated by the waste residue treatment system of the limestone-gypsum flue gas desulfurization(FGD)process in a thermal power plant is treated by chemical precipitation process.After one year of operation,the technology is found reliable and stable.The removal rates of SS,COD,fluoride,mercury and sulfate reached 99.5%,98.3%,87.5%,99.8%and 85.6%respectively,and the corresponding effluent concentrations were 54 mg/L,20 mg/L and 9.6 mg/L,0.04 mg/L,980 mg/L.Finally,the effluent quality of the system is no less than the requirements of Discharge Standard of Wastewater from Limestone-gypsum Flue Gas Desulfurization System in Fossil Fuel Power Plants(DL/T 997-2006).In addition,the total cost of electricity and chemical is only 6.65 yuan/m^(3).
作者
倪亭亭
王云钟
吴永明
胡玲玲
杨春燕
邓觅
NI Ting-ting;WANG Yun-zhong;WU Yong-ming;HU Ling-ling;YANG Chun-yan;DENG Mi(Qingdao Haijian Energy Conservation and Environmental Protection Co.Ltd.,Qingdao 266235,China;Jiangxi Academy of Sciences,Nanchang 330096,China;Jiangxi Water Resources Monitoring Center,Nanchang 330000,China)
出处
《中国给水排水》
CAS
CSCD
北大核心
2022年第4期109-113,共5页
China Water & Wastewater
基金
江西省重点研发计划项目(20192BBGL70045)
江西省中央引导地方科技发展专项资金项目(20192ZDD01001)。
关键词
脱硫废水
湿式石灰石-石膏法
化学沉淀法
混凝沉淀
desulfurization wastewater
wet limestone-gypsum
chemical precipitation method
coagulation sedimentation
作者简介
通信作者:邓觅,E-mail:dmi190816@163.com;倪亭亭(1988-),女,山东济宁人,硕士,高级工程师,从事水污染治理工程设计工作。E-mail:nitingingcc@163.com。
