垃圾填埋场渗滤液处理工艺

2025年04月01日 16:00
有3个网友回答
网友(1):

垃圾渗透液是指垃圾在堆放和填埋的过程中由于压实、发酵等物理生物以及化学作用,垃圾渗滤液如果处理得不及时还会散发出恶臭气体,硫化氢和氨气等,垃圾渗滤液的特点是是高浓度有机废水,会随着阶段的不同导致COD值不同,属于一种难处理的水质! 经过验证建议使用垃圾污水脱色剂进行物理化学法和生化法去处理这种垃圾污水,不仅可以脱色还可以降低部分的总磷氨氮COD,虽然是一种药剂但功效多样。其流程分为:第一步:渗滤液会通过收集进入调节池再过袋式过滤,袋式过滤可以去除比较大颗粒的悬浮物,再过到搅拌池,水质就会比较均匀可以提高原水的可生化性,再到一个生化系统,减少污泥产量,就可以到搅拌池添加垃圾污水脱色剂了,添加脱色剂后渗滤液已经絮凝沉淀了,再进入到沉淀池,就可以进入板框式压滤机,固液分离,上清液可以回用,压出来的泥就需要委外,交给第三方去处理,这是比较常见的污水处理方案。

网友(2):

1、垃圾渗滤液的来源
以国内常见的生活垃圾处理方法,统分为三大类,卫生填埋、高温焚烧、堆肥处理。
卫生填埋的兴起时间在80-90年代兴起,作为主要的的处理方式之一。根据住建部2020年12月30日发布的数据显示,我国的生活垃圾清运量超过2.4亿吨,大量的生活垃圾采用卫生填埋的方式,使得产生大量的垃圾渗滤液,难以全量化处理。
2、渗滤液的处理方式
现主流的有三类处理方式,双膜法,高级氧化,生物处理,但因为渗滤液的特殊性、复杂性,采用传统的的处理方式,出水已经不能达标,不能满足“全量化”处理的要求。
3、全量化处理工艺引用
针对渗滤液的复杂性,采用:FCM自电解+SAO3臭氧催化氧化+生物处理的工艺,“简称 非膜法”。
4、“非膜法工艺”特点
1. 工程的整体占地面积小30-50%,投资的成本对比双膜法低30%;
2. 系统运行成本低,整体加药量极小,易损耗材少,可降低节省20-60%;
3. 预处理特性,在面对水质波动下,可自主调节去除率,达到水质稳定;
4. 不产生双膜法处理的浓缩液,非膜法无浓液产生,全量化处理;
5. 系统预设PLC端,自动化程度高,人工操作量大幅减少;

网友(3):

1、对于垃圾渗滤液应急减量处理,可参考预处理+两级DTRO+后处理工艺,该工艺是填埋场渗滤液主流成熟的处理工艺之一,且适用于全国大多数垃圾填埋场渗滤液处理,主要应用在中老龄、封场后垃圾填埋场渗滤液处理,和垃圾渗滤液改造扩容项目。

以两级DTRO为核心的集装箱或撬装渗滤液处理设备,很好的契合了以上工艺设计,适用进水水质范围广,可以直接处理CODcr高达35000mg/L的高浓度污水,产水稳定达标。

2、对于垃圾渗滤液全量化处理,以膜处理+蒸发处理为核心,可从根本上全面彻底解决渗滤液造成的环境风险,产水稳定达标,清液得率高,无尾液残余。有多种定制化处理方案。

参考工艺:

(1)大于200m³/d的情况下:混凝沉淀+TUF+物料分离+ DTRO减量+低温负压蒸发+干燥(干燥污泥分区无害填埋)

(2)100~200m³/d的情况下:混凝沉淀+低温负压MVR+固化

(3)小于100m³/d的情况下:HPRO减量+低温真空蒸发+干燥/固化

以上供参考,望采纳,谢谢。

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