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SOLUTIONS&CASES
解决方案&案例
沈阳市老虎冲生活垃圾卫生填埋场渗沥液处理工程
项目背景
沈阳市老虎冲生活垃圾卫生填埋场,始建于1999年,于2003年6月1日投入运行,坐落于沈阳市苏家屯区奉集堡老虎冲村,距市区28公里。该填埋场占地面积约1478亩,总库容量为1.34×107m3,计划使用年限40年,设计处理生活垃圾1500吨/日,接纳沈阳市和平区、沈河区、苏家屯区、浑南新区的生活垃圾。
扩建背景
2005年9月沈阳市老虎冲生活垃圾渗沥液始采取碟管式反渗透处理工艺(DTRO),渗沥液设计处理能力均为230吨/日投入正式运行。由于渗沥液处理工程没有与填埋场同步运行,并且其处理能力达不到渗沥液产生量,导致填埋区大量渗沥液积存,大量积存的渗沥液只能通过外运方式处理。2014年10月,沈阳市发改委批复了新渗滤液处理站的建设。
解决方案一
15年渗沥液处理站处理对象为沈阳市老虎冲生活垃圾卫生填埋场渗沥液和餐厨垃圾厂污水。总处理量为1100m3/d。其中填埋场渗沥液处理量为846m3/d,餐厨垃圾污水处理量为254m3/d。采用的工艺为“均化池+外置式膜生物反应器(MBR)+纳滤(NF)+反渗透(RO)”,出水水质达到辽宁省地方标准《污水综合排放标准》(DB21/1627-2008)和《生活垃圾填埋场污染控制标准》(GB 16889-2008)表2要求
解决方案二
随着填埋场填埋量持续增加,原有的渗滤液处理站能力达不到目前实际需求量,因此2019年扩容了500m3/d的渗滤液处理线,项目采用的工艺为:CJMBR+纳滤+反渗透工艺。
其他项目案例