[1]张聪慧,王凯,刘一夫,等.成都某填埋场反渗透浓缩液浸没燃烧蒸发技术应用[J].中国给水排水,2024,40(14):119-125.
　ZHANGCong-hui,WANGKai,LIUYi-fu,et al.Application of Submerged Combustion Evaporation for RO Concentrated Leachate in a Landfill Site in Chengdu[J].China Water & Wastewater,2024,40(14):119-125.
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成都某填埋场反渗透浓缩液浸没燃烧蒸发技术应用

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第40卷 期数: 2024年第14期 页码: 119-125 栏目: 出版日期: 2024-07-17
Title:
Application of Submerged Combustion Evaporation for RO Concentrated Leachate in a Landfill Site in Chengdu
作者:
张聪慧1， 王凯1， 刘一夫2， 姚远2， 王候兵2， 石欢2， 吉龙标1， 李强2， 陈玉婷2， 李晓旭2
（1.北京水木湛清环保科技集团有限公司，北京 100041；2.中城院<北京>环境科技股份有限公司，北京 100120）
Author(s):
ZHANG　Cong-hui1， WANG　Kai1， LIU　Yi-fu2， YAO　Yuan2， WANG　Hou-bing2， SHI　Huan2， JI　Long-biao1， LI Qiang2， CHEN Yu-ting2， LI　Xiao-xu2
（1. Beijing Symgreen Environmental Technology Group Co. Ltd.， Beijing 100041， China； 2. China Urban Construction Research Institute Environmental Technology Co. Ltd.， Beijing 100120， China）
关键词:
垃圾填埋场;  垃圾焚烧厂;  反渗透浓缩液;  溶解性总固体;  总氮;  浸没燃烧蒸发;  盐分积累;  全量处理
Keywords:
landfill sites;  waste incineration plant;  reverse osmosis concentrated leachate;  total dissolved solids (TDS);  total nitrogen;  submerged combustion evaporation;  salt accumulation;  full-scale treatment
摘要:
反渗透浓缩液作为膜达标产水后富集物，其溶解性总固体和总氮含量高，基本不具备生物处理条件，一直是渗滤液处理的难点，目前国内的处理方式主要为回喷/回灌和蒸发。成都某填埋场浓缩液处理系统采用浸没燃烧蒸发工艺全量处理反渗透浓缩液，利用高温烟气与反渗透浓缩液直接换热缓解系统结垢，通过控制pH和温度等反应条件，解决盐分在渗滤液系统内积累的问题，促进系统的稳定良性运转，蒸发产生的蒸汽冷凝后产水水质达标，另设置反渗透系统作进一步保障。该项目出水水质满足《生活垃圾填埋场污染控制标准》（GB 16889—2008）的表2标准。采用厌氧沼气和天然气作为能源，整体自动化程度高，运行稳定，出水水质达标。以产水量计，电耗<45 kW·h/m3、天然气消耗量约82 m3/m3。
Abstract:
The concentrated leachate with high total dissolved solids (TDS) and total nitrogen content, as the concentrate after reverse osmosis (RO) membrane treatment to meet the effluent discharge standard, lack of conditions for biological treatment and has been an industry-wide challenge. The present techniques employed domestically are chiefly recirculation and evaporation. A landfill site in Chengdu utilizes submerged combustion evaporation for full treatment of the RO concentrated leachate, and uses direct heat exchange between the high-temperature flue gas and RO leachate to alleviate system scaling. Through the control of reaction conditions such as pH and temperature, the problem of salt accumulation in the leachate system is solved, and the virtuous circle of steady operation of the system is promoted. The steam condenses to effluent water after evaporation is up to the discharge standard. A RO system is also set up for further protection. The effluent quality meets criteria in the table 2 of the Standard for Pollution Control on the Landfill Site of Municipal Solid Waste (GB 16889-2008). Anaerobic biogas and natural gas have been used as energy sources, which ensures overall high automation, stable operation and up-to- standard effluent quality. According to water production, the power consumption is less than 45 kW·h/m3 and natural gas consumption is about 82 m3/m3.
更新日期/Last Update: 2024-07-17