电力科技与环保
電力科技與環保
전력과기여배보
ELECTRIC POWER ENVIRONMENTAL PROTECTION
2015年
3期
24-27
,共4页
申军锋%吴来贵%孙硅%何振坤%李玉杰%曹韵%李媛媛%宫丽娜
申軍鋒%吳來貴%孫硅%何振坤%李玉傑%曹韻%李媛媛%宮麗娜
신군봉%오래귀%손규%하진곤%리옥걸%조운%리원원%궁려나
废水零排放%酸洗废水%废水处理%回收利用
廢水零排放%痠洗廢水%廢水處理%迴收利用
폐수령배방%산세폐수%폐수처리%회수이용
zero-discharge%chemical cleaning wastewater%wastewater treatment%re cycling
锅炉酸洗废水具有排放量大、污染物浓度高和处理难度极大的特点。为实现酸洗废水处理后复用,不外排,分析了河源电厂2×600 MW超超临界机组酸洗废水成份,进行了小型模拟处理试验,探索了降低废水中金属离子含量、COD和浊度的方法。根据试验结果,采用稀释、pH调整、曝气、絮凝、沉淀及机械过滤的方法对锅炉酸洗废水进行处理,处理后的清水作为脱硫系统的工艺补充水。脱硫系统排出的废水采用蒸发结晶工艺进行处理,处理后的冷凝水作为冷却塔补充水回收利用,最终实现零排放,可为火电厂酸洗废水的处理利用提供参考。
鍋爐痠洗廢水具有排放量大、汙染物濃度高和處理難度極大的特點。為實現痠洗廢水處理後複用,不外排,分析瞭河源電廠2×600 MW超超臨界機組痠洗廢水成份,進行瞭小型模擬處理試驗,探索瞭降低廢水中金屬離子含量、COD和濁度的方法。根據試驗結果,採用稀釋、pH調整、曝氣、絮凝、沉澱及機械過濾的方法對鍋爐痠洗廢水進行處理,處理後的清水作為脫硫繫統的工藝補充水。脫硫繫統排齣的廢水採用蒸髮結晶工藝進行處理,處理後的冷凝水作為冷卻塔補充水迴收利用,最終實現零排放,可為火電廠痠洗廢水的處理利用提供參攷。
과로산세폐수구유배방량대、오염물농도고화처리난도겁대적특점。위실현산세폐수처리후복용,불외배,분석료하원전엄2×600 MW초초림계궤조산세폐수성빈,진행료소형모의처리시험,탐색료강저폐수중금속리자함량、COD화탁도적방법。근거시험결과,채용희석、pH조정、폭기、서응、침정급궤계과려적방법대과로산세폐수진행처리,처리후적청수작위탈류계통적공예보충수。탈류계통배출적폐수채용증발결정공예진행처리,처리후적냉응수작위냉각탑보충수회수이용,최종실현령배방,가위화전엄산세폐수적처리이용제공삼고。
The chemical cleaning wastewater for boiler is great emissions with high pol utant concentrations, and is difficult to be treated.In order to achieve the wastewater being reuse after treatment, basing on 2 ×600 MW ultra-supercritical units at Heyuan Power Plant, the wastewater compositions were analyzed,and simulation tests were taken how to reduce heavy metal ions, COD and suspended materials in the wastewater.Fol owing the test results, the cleaning wastewater was treated by dilution, pH adjustment, aeration, flocculation, sedi-mentation and mechanical filtration methods, and was reused as wet FGD process water.Then the desulfuriza-tion wastewater was treated by evaporation-crystal ization process, and the condensate water was recycled to the cooling tower, there were no discharges for the wastewater.The article can provide a reference to the ther-mal power plant how to treat the chemical cleaning wastewater with ZLD way.