GUO Zhiwen;LIU Junjun;GAO Zhijia;LI Shuhua;JIA Yonghui;

• 1:Jingneng(Xilin Guole) Power Co.
• 2:Ltd.

Abstract：

In order to meet the emission standard of wastewater from limestone wet flue gas desulfurization in power plant,the process of wastewater treatment technology of neutralization-sedimentation-flocculation-clarification which was used as a global prevailing technology was described.Based on the characteristics of desulphurization wastewater from electric power plant of Jingneng( Xilin Guole) Power Co.Ltd.,the new process characteristics of wet flue gas desulfurization were introduced in detail.It is a new type wastewater treatment process in which the p H value of the wastewater is firstly adjusted by limestone slurry( Ca( OH)2),and then only high-efficiency flocculant( GX) is added.The wastewater can meet the discharge standard after high-speed stirring,flocculation and sedimentation.The results show that when 11% high efficiency flocculant( GX) is added into the wastewater,the treatment effect is better. It is determined by orthogonal experiment that when the p H is 5.0 after adjusting,the dosage of high efficiency flocculant( GX) is 11% and stirred at a high speed of 200 r/min,Then after standing for 10 min,it has a good purification effect,and the heavy metal content in the wastewater is also lower than the discharge standard of DL/T 997—2006.

Key Words： Ca(OH)2;desulphurization wastewater;flocculant;heavy metal content

Abstract:

Keywords:

Foundation:

Authors: GUO Zhiwen;LIU Junjun;GAO Zhijia;LI Shuhua;JIA Yonghui;

DOI: 10.13226/j.issn.1006-6772.17112001

References：

• [1]聂鹏飞.600 MW机组湿法脱硫废水处理系统的优化改造[J].热力发电,2011,40(10):62-65.NIE Pengfei.Optimized retrofit of wastewater treatment system in wet desulphurization of 600 MW unit[J].Thermal Power Generation,2011,40(10):62-65.
• [2]周卫青,李进.火电厂石灰石湿法烟气脱硫废水处理方法[J].电力环境保护,2006,22(1)29-31.ZHOU Weiqing,LI Jin.Methods to treat waste water from limestone wet flue gas desulfurization in power plant[J].Electric Power Environmental Protection,2006,22(1):29-31.
• [3]兰颖,马平.湿法烟气脱硫系统脱硫效率的影响因素分析[J].电力科学与工程,2013,29(7):58-63.LAN Ying,MA Ping.Analysis of factors affecting the desulfurization efficiency of wet flue gas desulfurization system[J].Electric Power Science and Engineering,2013,29(7):58-63.
• [4]刘海洋,夏怀祥,江澄宇,等.燃煤电厂湿法脱硫废水处理技术研究进展[J].环境工程,2016,34(1):31-35.LIU Haiyang,XIA Huaixiang,JIANG Chengyu,et al.Reserch advances in wet flue gas desulfurization wastewater treatment in coalfired power plant[J].Environmental Engineering,2016,34(1):31-35.
• [5]祁利明,赵全中,陈宏伟.火电厂脱硫废水处理系统存在的问题及建议[J].工业用水与废水,2015,46(1):46-48.QI Liming,ZHAO Quanzhong,CHEN Hongwei.Existing problems and suggestions on thermal power plantdesulfurization wasterwater treatment system[J].Industrial Water&Wastewater,2015,46(1):46-48.
• [6]禾志强,祁利明.火力发电厂烟气脱硫废水处理工艺[J].水处理技术,2010,36(3):133-135.HE Zhiqiang,QI Liming.Flue gas desulfurization wastewater treatment process in thermal power plant[J].Technology of Water Treatment,2010,36(3):133-135.
• [7]马双忱,于伟静,贾绍广,等.燃煤电厂脱硫废水处理技术研究与应用进展[J].化工进展,2016,35(1):255-262.MA Shuangchen,YU Weijing,JIA Shaoguang,et al.Research and application progress of desulfurization wastewater treatment technology in coal-fired power plants[J].Chemical Industry and Engineering Progress,2016,35(1):255-262.
• [8]司晨浩,孟冠华,魏旺,等.湿法脱硫废水处理技术进展[J].电力科技与环保,2017,33(1):25-27.SI Chenhao,MENG Guanhua,WEI Wang,et al.Progress in treatment technology of wet desulphurization wastewater[J].Electric Power Technology and Environmental Protection,2017,33(1):25-27.
• [9]ENOCH G,SPIERING W,TIGCHELAAR P,et al.Treatment of waste water from wet lime(stone)flue gas desulfurization plants with aid of crossflow microfiltration[J].Separation Science and Technology,1990,25(13/14/15):1587-1605.
• [10]LEFERS J,BROEKE,VAN Den W,et al.Heavy metal removal from waste water from wet lime(stone)-gypsum flue gas desulfurization plants[J].Water Research,1987,21(11):1345-1354.
• [11]谈宾宾,李超.火力发电厂烟气脱硫废水处理工艺研究[J].化工管理,2016,12(36):136.TAN Binbin,LI Chao.Research on flue gas desulfurization wastewater treatment process in thermal power plant[J].Chemial Enterprise Management,2016,12(36):136.
• [12]周栩,周鹏.火电厂脱硫废水处理设计与运行[J].安全、健康和环境,2011,11(2):23-26.ZHOU Xu,ZHOU Peng.Design and operation of desulfurization wastewater treatment devicein thermal power plant[J].Safety Health&Environment,2011,11(2):23-26.
• [13]汤争光,梅拥军.石灰石-石膏湿法烟气脱硫废水处理浅析[J].上海环境科学,2001(12):609-610.TANG Zhengguang,MENG Yongjun.Preliminary analysis on treatment of wastewater from limestone-gypsum wet flue gas desulphurization process[J].Shanghai Environmental Sciences,2001(12):609-610.
• [14]樊凯,吴书杰.电厂烟气湿法脱硫废水的处理[J].当代化工,2010,39(1):112-114.FAN Kai,WU Shujie.Treatment of waste water from wet FGD in power plant[J].Contemporary Chemical Industry,2010,39(1):112-114.
• [15]胡友彪,张慰,王世超.粉煤灰对重金属废水的吸附性能研究[J].煤炭科学技术,2007,35(7):92-94.HU Youbiao,ZHANG Wei,WANG Shichao.Research on adsorption performance of fly ash to heavy metal waste water[J].Coal Science and Technology,2007,35(7):92-94.