摘要
SCAL型间冷系统的循环废水中含有大量铁铝腐蚀产物,根据间冷循环水的水质特点,通过理论分析拟定了回收方案,通过工业实验对其进行了验证。结果表明,实施回收前需要对废水的温度、pH值、浊度和铁铝含量进行测定,当循环废水的水质指标不能满足水处理设备进水要求时,需要按照一定的比例将间冷循环废水和厂区生水在生水箱中混合后再进行回收处理。
Comparing with raw water,the circulating water in SCAL indirect air-cooling system contained much corrosion products of steel and aluminum. By theoretical analysis the recovery scheme was made up according to the water quality of indirect air-cooling circulating water. Then it is verified by the industry tests. The results indicates the temperature,pH,turbidity and content of Fe and AL of waste water should be measured before recycling. In case some water quality indexes of waste water could not satisfy the water inlet requirements of watertreatment equipment,mixing the raw water and waste water by a ratio could solve this problem.
引文
[1]冯璟,刘志刚.1000MW机组间接空冷系统设计[J].电力建设,2009,30:46-48.
[2]蒋华,冯璟.600MW超临界机组SCAL型间接空冷系统综述[J].仪器仪表用户,2012,19:15-17.
[3]陈立军,米利俊,徐超,等.新形势下直接空冷和间接空冷的发展分析[J].电站系统工程,2010,26:5-9.
[4]施永华.间接空冷用铝管腐蚀原因分析[J].理化检验-物理分册,2013,49:119-122.
[5]赵长江.间接空冷机组循环水联氨处理工艺的电化学研究[J].内蒙古电力技术,2017,35:26-31.
[6]陈亮,周瑜,梁金丽.350MW机组间冷循环水p H异常原因分析及优化控制[J].冶金动力,2017,1:38-40.
[7]温高.发电厂空冷技术[M].北京:中国电力出版社,2008.
[8]丁尔谋.发电厂空冷技术[M].北京:水利电力出版社,1992.
[9]周柏青,陈志和.热力发电厂水处理[M].北京:中国电力出版社,2009:95-233.
[10]陈胜喜,刘小亮.多介质过滤器、超滤和反渗透技术在中水回用中的应用探讨[J].节能,2014,7:37-40.
[11]广东电网公司电力科学研究院.电厂化学[M].北京:中国电力出版社,2014:52-77.
[12]李静平,王微,窦家新,等.间接空冷换热器铝管束腐蚀原因分析及解决措施[J].内蒙古电力技术,2016,34:56-59.
[13]蒋正杰,刘跃东.多介质过滤器在电厂废水处理系统中的应用[J].电力科技与环保,2017,33:48-49.
[14]赵瑞峰.多介质过滤器的分析[J].山西冶金,2005,97:61-63.
[15]李庆华.超滤膜技术在环境工程水处理中的应用[J].化工管理,2018,30:162.