共查询到20条相似文献,搜索用时 109 毫秒
1.
针对城市生活垃圾渗滤液的特点,提出了脱氨氮、SBR生化处理、加氯消毒的处理工艺.试验结果证明,经该处理工艺,各种年限的垃圾渗滤液中的氨氮、CODCr等指标均能达到排放标准. 相似文献
2.
为找到适合生活垃圾卫生填埋场渗滤液处理的工艺方法和最佳运行参数,分析了广东省某垃圾填埋场渗滤液处理系统的改造,采用组合式污水处理工艺,优化填埋场过滤技术.系统运行后,改造后的渗滤液处理系统出水水质稳定达到《生活垃圾填埋场污染控制标准》要求.垃圾填埋场用过滤器过滤试验水,根据废物处理过滤器性能和组成,从经济可行性和技术可... 相似文献
3.
4.
5.
6.
7.
介绍了城市垃圾填埋场渗滤液处理工艺的现状,并结合工程实例进行分析比较,在此基础上提出了一些建议。 相似文献
8.
9.
渗滤液是垃圾在进行卫生填埋处理时,一些外来水分和垃圾腐化产生的内源水形成的。生活垃圾填埋渗滤液是填埋场伴生的二次污染物,各个方面的因素不注意的话,都能对渗滤液的性质产生影响,所以渗滤液的性质具有不确定性。本文主要对渗滤液的根源、污染进行了分析,并提出了合理的解决措施。 相似文献
10.
11.
垃圾渗滤液的无害化处理是污水处理的难点,国内目前垃圾焚烧厂渗滤液较多采用三级排放标准,而后进入城市污水处理站进一步深化处理。随国家环保排放要求的日趋严格,研究在原有设施基础上进行深度处理改造,是势在必行的。本文通过介绍太仓垃圾焚烧发电项目渗滤液的深度处理改造实践,对行业内其他垃圾焚烧厂提高排放标准具有借鉴意义。 相似文献
12.
Yanping LIU Xiujin LI Baozhen WANG Shuo LIU 《Frontiers of Environmental Science & Engineering in China》2008,2(1):24-31
Reverse osmosis system with the disc-tube module (DT-RO) was applied to treat landfill leachate on full scale at the Changshengqiao
Sanitary Landfill, Chongqing City, China. In the first six-mouth operation phase, the treatment performance of DT-RO system
had been excellent and stable. The removal rate of chemical oxygen demand (COD), total organic carbon (TOC), electrical conductivity
(EC), and ammonia nitrogen (NH3-N) reached 99.2–99.7%, 99.2%, 99.6%, and over 98%, respectively. The rejection of Ca2+, Ba2+, and Mg2+ was over 99.9%, respectively. Suspended solid (SS) was not detected in product water. Effective methods had been adopted
to control membrane fouling, of which chemical cleaning is of utmost importance to guarantee the long smooth operation of
the DT-RO system. The DT-RO system is cleaned in turns with Cleaner A and Cleaner C. At present, the 1st stage cleaning cycle
by Cleaner A and Cleaner C is conducted every 100 and 500 h, respectively, depending on raw the water quality. 相似文献
13.
14.
以垃圾渗滤液为阳极液,系统研究了汲取液种类和浓度对正渗透微生物燃料电池(OsMFC)工艺处理垃圾渗滤液性能的影响.结果表明,在汲取液为氯化钠的情况下,OsMFC工艺的最大功率密度可达0.44 W·m~(-2),表观内阻为236.75Ω,水通量为0.98 L·m~(-2)·h~(-1),TOC、NH_4~+-N、TN和TP的去除率分别达到89.51%、93.27%、94.01%和96.95%,均好于碳酸氢钠和碳酸氢铵作为汲取液时的处理效果.此外,氯化钠汲取液浓度越大,产电性能越好,表观内阻越小,水通量越大.产电性能随汲取液浓度的增大变化不大,在汲取液浓度为1 mol·L~(-1)的情况下,水通量和盐返混量的比值最大,处理效果最好. 相似文献
15.
In this study, landfill leachate with and without pre-treatment was co-treated with municipal wastewater at different mixing ratios. The leachate pre-treatment was achieved by air stripping to removal ammonia. The objective of this study was to investigate the effect of landfill leachate on nutrient removal of the wastewater treatment process. It was demonstrated that when landfill leachate was co-treated with municipal wastewater, the high ammonia concentration in the leachate did not have a negative impact on the nitrification. The system was able to adapt to the environment and was able to improve nitrification capacity. The readily biodegradable portion of chemical oxygen demand (COD) in the leachate was utilized by the system to improve phosphorus and nitrate removal. However, this portion was small and majority of the COD ended up in the effluent thereby decreased the quality of the effluent. The study showed that the 2.5% mixing ratio of leachate with wastewater improved the overall biological nutrient removal process of the system without compromising the COD removal efficiency. 相似文献
16.
腐蚀电池-Fenton工艺用于垃圾渗滤液的预处理研究 总被引:8,自引:1,他引:8
采用铁屑和颗粒活性炭通过原电池反应产生的Fe2 离子取代FeSO4组成腐蚀电池-Fenton工艺,采用该工艺对垃圾渗滤液进行预处理.结果表明,最佳运行条件为pH值为2、H2O2投加量为理论投加量的50%、铁屑投量为30 g(500 mL渗滤液中)、Fe/C质量比为2.5、反应时间为1 h、絮凝pH值为7,其COD去除率可达到60%(其中活性炭吸附占19%),TOC去除率可达47%(其中活性碳吸附占13%),BOD5/COD值从原水的0 35提高到出水的0.69;而传统Fenton工艺在H2O2/Fe2 比值等于5、其它条件与腐蚀电池-Fenton工艺相同的条件下,COD去除率为26%,TOC去除率为19%,BOD5/COD比值从原水的0.43提高到0.69.将腐蚀电池-Fenton工艺用于垃圾渗滤液的预处理,在有机物去除率和提高可生化性方面效果均明显优于传统Fenton工艺. 相似文献
17.
18.
以垃圾渗滤液为研究对象,研究UASB-除碳-一体化ANAMMOX工艺的除碳脱氮特性.结果表明:该工艺可实现高效除碳脱氮;在进水COD浓度6210~16365mg/L?TN浓度为990~2100mg/L时工艺出水COD浓度最低为655mg/L,出水TN浓度最低为39.9mg/L.进水中的可降解COD主要在UASB和除碳池中去除(分别为59%和31%),进入到一体化ANAMMOX池中的多为惰性有机物质;TN的去除在除碳池和一体化ANAMMOX池中进行,其中除碳池中TN去除量占工艺TN去除量的53%,主要通过同步硝化反硝化去除;ANAMMOX池中TN去除46%,主要通过AOB和AnAOB的协同作用实现.当除碳池出水含可降解有机物时,对后续一体化ANAMMOX池的自养脱氮抑制严重;充分降解除碳池中的可降解有机物是影响系统脱氮效率的关键因素. 相似文献
19.
采用微波-活性炭-Fenton催化氧化预处理垃圾渗滤液,研究了不同因素对垃圾渗滤液处理效果的影响.结果表明,COD和氨氮去除率随活性炭用量、微波辐射时间和微波功率增加而增加;随Fe2+用量和H2O2用量增加,COD和氨氮去除率先增加而后下降;随pH值增加,氨氮去除率显著增加,COD去除率变化不明显.在微波功率为300W,pH值为8,活性炭9g/L,Fe2+用量为0.02mol/L,H2O2用量为7mL/L,辐射时间6min条件下,垃圾渗滤液中COD和氨氮去除率分别达到68.22%和78.08%,SS去除率达到78.55%,浑浊度去除率达到99.02%,颜色由黑褐色去除为接近无色,BOD5/COD由0.21提高到0.45;研究比较了不同处理对垃圾渗滤液的处理效果.结果显示,微波催化氧化对垃圾渗滤液中COD和氨氮去除率明显高于其他处理. 相似文献