共查询到19条相似文献,搜索用时 495 毫秒
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基于DH 网络技术,结合垃圾渗滤液处理厂的工艺流程特点和PLC控制技术,介绍了DH 网络技术在垃圾渗滤液处理厂自动控制系统中的应用,并着重对SBR工艺的自动控制进行了阐述.指出DH 网的合理配置可优化自动控制系统结构、降低成本. 相似文献
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MBR+NF+RO工艺在垃圾渗滤液处理中的应用 总被引:1,自引:0,他引:1
垃圾渗滤液属高浓度废水、成分复杂,对处理工艺要求较高,传统生化处理难以满足要求。文中介绍了MBR+NF+RO组合工艺在垃圾渗滤液处理中的应用,其处理效果较好。 相似文献
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纳滤是介于反渗透和超滤之间的一种膜分离技术,现已成为是国内外研究的热点。本文简单介绍了垃圾渗滤液的特点及目前处理工艺,分析了纳滤膜的分离机理及特点:利用纳滤膜技术处理MBR二级处理后出水,研究纳滤膜在垃圾渗滤液应用中进出水COD变化情况。通过自身所做的纳滤膜设计工艺,进一步反馈了纳滤膜在渗滤液处理中的良好效果。 相似文献
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垃圾渗滤液处理技术的发展与展望 总被引:3,自引:0,他引:3
介绍了垃圾渗滤液的产生来源和特点,指出垃圾渗滤液是一种非常复杂的、难以生物化处理的污水,是国内外污水处理的一大难题;总结了近年来在垃圾渗滤液的预处理、主体工艺及深度处理技术上的研究进展,并提出了今后研究垃圾渗滤液处理技术的发展方向. 相似文献
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我国城市垃圾渗滤液处理的技术及现状 总被引:3,自引:1,他引:2
在简要介绍我国城市垃圾处理的发展历史与现状后,针对国内应用最为广泛的城市垃圾卫生填埋场所产生的垃圾渗滤液处理技术进行了大量的调查、类比工作,并结合国内的多个工程实例总结出我国目前垃圾渗滤液处理的现状. 相似文献
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K. KAUR BSc. PhD J. CHURCHLEY BSc. MCIWEM N. J. KANDHOLA BSc. MSc. 《Water and Environment Journal》2005,19(4):384-393
Some landfill site operators use wastewater treatment plants for the discharge of complex leachate waste. However, for the water company involved in managing the wastewater plant, leachates can pose a problem to the quality of the effluent, due to the high levels of Chemical Oxygen Demand (COD), ammonia and inorganic metal constituents. Electrochemical oxidation of landfill leachate has been successfully used by researchers(1,2,3,4) with current densities of 5 to 100 mA/cm2 . A new laboratory system has been developed which utilises a low current density of 2.42 mA/cm2 and the performance has been evaluated with synthetic and 'real' landfill leachates from 2 wastewater sites.
This system reduces COD of synthetic mixtures by 58%, with complete removal of ammonia. For real leachates, 5 out of 8 samples resulted in ammonia reduction, with 2 samples experiencing approximately. 60% COD reduction. Power costs for treatment have been determined and the potential for a full-scale installation considered. 相似文献
This system reduces COD of synthetic mixtures by 58%, with complete removal of ammonia. For real leachates, 5 out of 8 samples resulted in ammonia reduction, with 2 samples experiencing approximately. 60% COD reduction. Power costs for treatment have been determined and the potential for a full-scale installation considered. 相似文献
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Stabilized landfill leachate treatment by combined physicochemical-nanofiltration processes 总被引:12,自引:0,他引:12
Landfill leachate is a complex wastewater which the composition and concentration of contaminants are influenced by the type of waste deposited and the age of landfill. In the last years, several processes or process combinations were developed and tested to reach requirements for the discharge of leachate. Among the new processes, membrane processes are considered as promising: reverse osmosis is one of the most widely used treatment in the Northwestern European countries and nanofiltration is gained in popularity during the last 5 years. Successful application of membrane technology for the treatment of landfill leachates, requires efficient control of membrane fouling. Two organic membranes of nanofiltration were used for pilot-scale testing. Leachates were subject to several pretreatments (pH modification, prefiltration and coagulation with FeCl3) to remove potential foulants including dissolved organic and inorganic substances, colloidal and suspended particles. These pretreatments do not enhance the performances (retention and permeation flux) of membranes because the pH range and the presence of Fe3+ ions contribute greatly to change the characteristics of organic matter and the surface charges of membranes. However, the results show that nanofiltration is sufficient to eliminate refractory COD, the permeates have a COD lower than the requirements for discharge. 相似文献
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采用电解芬顿法深度处理老龄垃圾渗滤液,选取电量、进水 pH 值、进水氨氮浓度3个因素为变量,CODCr 去除率为响应值进行 Box-Behnken 中心组合设计。利用响应面法对试验结果进行分析,建立了 CODCr 去除率为响应值的二阶多项式模型并进行了方差分析和显著性检验,通过解模型逆矩阵得到最佳条件:单位面积电量为23.26 Ah/dm2、pH 值为3.58、进水氨氮浓度56.78 mg/L。在最佳条件下,CODCr 去除率为96.5%,与模型预测值偏差为4.45%,吻合度较高。对电解芬顿深度处理前后的渗滤液进行 GC-MS 分析,表明电解芬顿协同处理技术能有效降解垃圾渗滤液中难生化降解的有机物,将有机物种类从42种降低至21种,是较有效的深度处理技术。 相似文献