共查询到17条相似文献,搜索用时 213 毫秒
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《四川环境》2017,(6)
对比研究腐殖土SBR工艺与传统SBR工艺除污效果及微型动物种群动态变化。研究发现,腐殖土SBR工艺提高除磷效果,出水TP平均值为0.44mg/L,去除率为97.07%,而SBR工艺出水TP为2.40mg/L,去除率仅为84.02%。TN去除效果差别不大,腐殖土SBR和SBR工艺分别为62.97%、69.15%。由于腐殖土析出腐植酸,测定UN254值SBR工艺中较高,造成腐殖土SBR工艺COD出水浓度比SBR工艺高10 mg/L。污泥镜检发现,腐殖土SBR工艺活性污泥微型动物数量比SBR工艺略少,可能是腐殖土反应器中培养出了放线菌所致。对微型动物密度与出水水质和污泥指标的相关分析表明,微型动物密度与SVI、SS、TN和COD去除率呈明显负相关。且腐殖土SBR工艺后生动物与SVI相关性比SBR工艺明显。 相似文献
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活性污泥法的发展及其工程选择 总被引:9,自引:0,他引:9
本文阐述了城市污水处理活性污泥法的发展沿革,着重介绍了近三十年出现的几个重要工艺的特点;文中还提出在建设中、小城市污水处理厂时对工艺行根据。建设在目前应更多关注SBR,UNITANK及OD工艺。 相似文献
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文章研究应用高效嗜油菌处理长庆油田采出水的可行性及对COD、石油类的去除效果。介绍了SBR试验装置概况、试验原理及方法,分析了SBR工艺处理模拟废水的运行效果,及未加入填料载体条件下、加入填料载体条件下SBR工艺处理油田采出水的运行效果,简要分析了所采用高效嗜油菌特性。结果表明:加入高效嗜油菌,SBR工艺处理长庆油田采出水效果较好,石油类去除率均值达到98.2%,COD去除率均值达到95.0%;当进水石油类浓度高于450mg/L的情况下,石油类去除率降低,SBR反应器运行状况不稳定。 相似文献
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SBR工艺出水浓度受进水浓度(COD、NH3-N)及曝气时间等因素的影响,这些影响之间存在着一定的多层相关性。尝试从统计学角度用偏线性最小二乘法对SBR系统进行描述性分析,建立数学模型,对SBR系统进行解释性描述。在对SBR工艺工况进行充分的观察和认识,对其要素内在联系进行辨识和深入分析的基础上,对SBR出水浓度作出预测。 相似文献
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《中国环保产业》2005,(9):47-48
由杭州杭氧环保成套设备有限公司开发的SBR工艺城市污水处理成套设备,适用于1万~10万t/d中小型城市污水处理厂。进出水水质BOD5(mg/L)CODcr(mg/L)SS(mg/L)pH(mTgN/L)(mTgP/L)N(mHg3/-LN)PO43-进水2003802006~9305--出水≤20≤60≤206~9--≤15≤0.5主要技术内容一、基本原理SBR工艺属于活性污泥生物处理工艺的一种。它将进水、曝气、沉淀、排水几个工序集中在一个构筑物内进行,并有多种变型工艺。滗水器将构筑物中已处理的水按要求从上层取水并定流量排出;鼓风曝气向水中充氧,并推动水流,使水质有效混合;格栅清除掉进水中的… 相似文献
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周期循环活性污泥(CASS)工艺是序批式活性污泥(SBR)工艺的一种变形工艺,在运行过程中大多采用最高水位与最低水位的变水位运行方式,在实际操作过程中采用恒水位的运行方式,并对该方式的操作程序和出水效果进行比较。结果表明,恒水位运行方式不仅可省去前端倒换阀门的繁锁操作,而且运行效果更为稳定,运行过程中的工艺更易于控制。 相似文献
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SBR法强化脱氮除磷工艺的研究开发现状 总被引:1,自引:0,他引:1
根据SBR工艺的特征和氮磷脱除机理,分析了改善SBR氮磷脱除功能的有效途径,重点对目前已研究开发出的几种实用的SBR法强化脱氮除磷工艺进行综述。 相似文献
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SBR法处理合成洗涤剂废水的研究 总被引:2,自引:0,他引:2
在本文中,作者通过对SBR工艺以及合成洗涤剂工业废水水质的介绍,经过一系列的实例,得到了使用SBR法对合成洗涤剂工业废水进行处理的各种参数,如进水时间,如进水时间、曝气时间、搅拌时间、静沉时间、排水时间、进水水比例、实验流流程顺序等。 相似文献
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SBR法废水处理技术分析 总被引:2,自引:2,他引:0
本文介绍了SBR法处理原理及特点,使用该工艺所需设备和监测手段,应用前景。证明了SBR法适应性强,处理效果好,投资动行成本低,是一种经济、实用的污水处理工艺。 相似文献
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Experiments were carried out to determine the feasibility of treating tannery wastewater containing chromium, an inhibiting compound, with sequencing batch reactors (SBR). The maximum chromium concentration tolerated by microorganisms was determined through aerobic and anoxic batch experiments, and the biomass inhibition process was analyzed in a lab scale reactor at increasing chromium concentrations. The results obtained, in batch experiments and in the SBR reactor, have demonstrated that chromium addition had less influence on the denitrification bacteria than on the nitrification bacteria. In addition, it was observed that nitrification and denitrification rates, at the same chromium concentration, were higher in the SBR reactor than in batch experiments with unacclimated biomass. Experimental results confirm that sequencing batch reactors are able to produce a more resistant biomass, which acclimates quickly to inhibiting conditions. A large amount of chromium was found in the sludge from the reactor, while the effluent was devoid of the inhibiting metal. 相似文献
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Optimization of wastewater treatment alternative selection by hierarchy grey relational analysis 总被引:14,自引:0,他引:14
This paper describes an innovative systematic approach, namely hierarchy grey relational analysis for optimal selection of wastewater treatment alternatives, based on the application of analytic hierarchy process (AHP) and grey relational analysis (GRA). It can be applied for complicated multicriteria decision-making to obtain scientific and reasonable results. The effectiveness of this approach was verified through a real case study. Four wastewater treatment alternatives (A(2)/O, triple oxidation ditch, anaerobic single oxidation ditch and SBR) were evaluated and compared against multiple economic, technical and administrative performance criteria, including capital cost, operation and maintenance (O and M) cost, land area, removal of nitrogenous and phosphorous pollutants, sludge disposal effect, stability of plant operation, maturity of technology and professional skills required for O and M. The result illustrated that the anaerobic single oxidation ditch was the optimal scheme and would obtain the maximum general benefits for the wastewater treatment plant to be constructed. 相似文献