活性炭静态吸附马铃薯淀粉废水的试验研究

本试验采用颗粒活性炭吸附处理低浓度马铃薯淀粉废水,研究吸附时间、活性炭粒径及废水的pH对活性炭吸附处理效果的影响。试验结果表明:Langmuir和Freundlich吸附等温式均能较好地拟合颗粒活性炭对马铃薯淀粉废水的吸附处理过程;活性炭粒径越大其最大吸附速率和吸附量越小;活性炭在酸性条件下比在碱性条件下具有更高的最大吸附速率和吸附量。     

活性炭吸附法处理含铬电镀废水探讨

1　前　言在电镀生产中 ,尤其是在镀铬及各种铬酸钝化处理时 ,产生大量的含铬废水。对重金属废水的处理 ,只能是转移金属存在的位置或转变其物理和化学形态 ,采用活性炭吸附法处理含铬电镀废水。当含铬废水ｐＨ值控制在 3～ 4 .5之间时 ,利用活性炭具有的物理吸附 ,化学吸附、化学还原等特性 ,能有效地吸附废水中的六价铬 ,使含铬电镀废水得到净化。2　工艺流程工艺流程主要包括活性炭预处理 (对新炭 ) ,废水过滤Ｃｒ6+ 被吸附净化 ,以及活性炭再生处理等三个部分。2 .1　活性炭及废水预处理预处理工艺包括活性炭和废水两个因素 ,其目的是提…     

活性炭纤维处理有机化工废水的研究

以活性炭纤维处理高浓度有机化工废水，实验结果表明：活性炭纤维对CODcr＝1．2／105mg／L的有机化工废水具有良好的吸附、分离性能，处理后出水CODcr＜1000mg／L，净化效率为98％以上，并对活性炭纤维的吸附机理进行了探讨。活性炭纤维处理有机化工废水的研究     

粉煤灰活性炭处理六价铬废水的试验研究

本研究用火电厂废渣－粉煤灰的浮选炭制得的颗粒活性炭，对六价铬废水进行净化处理，结果表明，粉煤灰活性炭对六价铬废水处理效果良好。实验探讨了粉煤灰活性炭处理六价铬废水的一般规律及影响因素。     

活性炭吸附法处理染料废水研究的进展概况

介绍了我国活性炭吸附法处理含染料废水的进展概况。简述了活性炭吸附染料的各种影响因素及报道最新的耦合活性炭吸附处理染料废水的方法,指出了活性炭处理印染废水的局限性,简单介绍了活性炭的再生方法,并展望了活性炭吸附法处理染料废水技术的发展前景。     

札赍诺尔褐煤活性炭对酚的净化作用

处理含酚废水已有较成熟的方法。其中,活性炭吸附法由于能去除多种污染物,又可再生使用,得到了广泛的应用。为了降低生产成本及减小能耗,本研究采用了一步法生产活性炭的工艺。实验证明,该工艺生产的活性炭具有较好净化含酚废水的能力。一、     

电解法处理酸性废水的初步研究

工业酸性废水排放量很大,有些厂用中和法处理仍不能达到排放标准。本文探索用电解法处理酸性废水,在电解槽内的两极板间加入活性炭或磺化煤能使酸性废水得到有效的处理。活性炭,磺化煤均可重复多次使用。这将为此类废水处理开辟一条新路。     

铁屑－活性炭内电解法处理废水研究

根据电化学原理，采用内电解法，利用铁屑与活性炭的共同作用来净化含合成洗涤剂的废水和印染废水。讨论各种因素对污染物脱除效果的影响；着重研究活性炭加入后的作用。     

刍议铅锌矿选矿废水的处理及循环利用措施

为了更好的解决铅锌矿的选矿废水能够循环利用,本文对自然降解、混凝沉降以及活性炭吸附等多种方法进行处理,并且对废水进行回收研究。在试验阶段发现,活性炭吸附的处理方法可以在去除废水中的有机染污以及重金属离子具有很好的效果,同时处理后的选矿水同时还能进行回收利用,这样可以实现废水的可持续发展。     

微型反应柱在含铬废水处理试验研究中的应用

针对镀铬车间废水,采用活性炭吸附处理法对Cr6 和Cr3 的去除效果进行了系统的试验.通过微型反应柱集成装置对穿透时间、吸附容量及活性炭再生方法进行了研究,动态试验表明该装置能有效地处理含铬废水.     

活性炭深度处理工艺用于地下回灌的水质研究

以北京高碑店污水处理厂二级生化出水为对象,研究了用于地下回灌的活性炭三级处理工艺.活性炭可有效降低DOC,UV-254和COD,部分去除可吸附有机卤化物(AOX).再经过土壤含水层处理,约90%的可吸附有机溴化物(AOBr)可被去除.Ames试验结果显示活性炭工艺可有效降低二级生化出水中的致突物.GC/MS分析表明,活性炭吸附可降低有机物含量,再经土壤含水层处理,大部分有机物及优先控制的污染物可被去除.      

Supercritical water oxidation for the destruction of toxic organic wastewaters： A review

The destruction of toxic organic wastewaters from munitions demilitarization and complex industrial chemical clearly becomes an overwhelming problem if left to conventional treatment processes. Two options, incineration and supercritical water oxidation （SCWO）, exist for the complete destruction of toxic organic wastewaters. Incinerator has associated problems such as very high cost and public resentment; on the other hand, SCWO has proved to be a very promising method for the treatment of many different wastewaters with extremely efficient organic waste destruction 99.99% with none of the emissions associated with incineration. In this review, the concepts of SCWO, result and present perspectives of application, and industrial status of SCWO are critically examined and discussed.     

Microbes team with nanoscale zero-valent iron: A robust route for degradation of recalcitrant pollutants

Integrating nanoscale zero-valent iron (nZVI) with biological treatment processes holds the promise of inheriting significant advantages from both environmental nano- and bio-technologies. nZVI and microbes can perform in coalition in direct contact and act simultaneously, or be maintained in separate reactors and operated sequentially. Both modes can generate enhanced performance for wastewater treatment and environmental remediation. nZVI scavenges and eliminates toxic metals, and enhances biodegradability of some recalcitrant contaminants while bioprocesses serve to mineralize organic compounds and further remove impurities from wastewater. This has been demonstrated in a number of recent works that nZVI can substantially augment the performance of conventional biological treatment for wastewaters from textile and nonferrous metal industries. Our recent laboratory and field tests show that COD of the industrial effluents can be reduced to a record-low of 50 ppm. Recent literature on the theory and applications of the nZVI-bio system is highlighted in this mini review.     

石化工业园区有毒废水来源识别研究

针对石化废水对综合污水处理厂的毒性冲击问题,采用耗氧速率抑制试验评价不同石化废水对活性污泥的毒性,评价对象包括石化工业园区内不同生产装置和装置内不同生产节点的废水.试验发现废水的有机质含量与毒性效应之间没有直接的相关性,并不能单从废水的有机质含量预测其毒性.同时,研究中针对活性污泥敏感性在不同批次试验之间的差异问题,将各废水对活性污泥的毒性数据转化为标准毒性物质3,5-二氯苯酚的浓度,提高了数据之间的可比性.在此基础上,根据废水流量和对应3,5-二氯苯酚浓度,计算废水对应标准毒性物质质量排放负荷,作为评价废水毒性排放贡献的指标.对不同装置和节点石化废水的毒性贡献进行排序,有效识别了该石化工业园区内有毒废水的产生来源,为从生产源头控制废水毒性提供有效指导.     

微电解+Fenton氧化+二级A/O组合工艺处理农药杀菌剂废水

杀菌剂生产废水含有大量三环唑、无机盐、高毒性物质和难生物降解有机物,对生化细菌有较强的抑制和毒害作用,且BOD5/COD值较小,采用传统生化处理工艺无法进行。现采用微电解、Fenton氧化和二级A/O组合工艺建成的废水处理工程,运行良好,出水各项指标达到环太湖流域排放标准DB 32/1072—2007。     

Evaluating the e ects of granular and membrane filtrations on chlorine demand in drinking water

In this study, chlorine decay experiments were conducted for the raw water from Nakdong River that is treated by Chilseo Water Treatment Plant (CWTP) situated in Haman, Korea as well as the e uents from sand and granular activated carbon (GAC) filters of CWTP and fitted using a chlorine decay model. The model estimated the fast and slow reacting nitrogenous as well as organic/inorganic compounds that were present in the water. It was found that the chlorine demand due to fast and slow reacting (FRA and SRA) organic/inorganic substances was not reduced significantly by sand as well as GAC filters. However, the treated e uents from those filters contained FRA and SRA that are less reactive and had small reaction rate constants. For the e uents from microfiltration, ultrafiltration, and nanofiltration the chlorine demand because FRA and SRA were further reduced but the reaction rate constants were larger compared to those of sand and GAC filter e uents. This has implications in the formation of disinfection by products (DBPs). If DBPs are assumed to form due to the interactions between chlorine and SRA, then it is possible that the DBP formation potential in the e uents from membrane filtrations could be higher than that in the e uents from granular media filters.     

Evaluating the effects of granular and membrane filtrations on chlorine demand in drinking water

In this study, chlorine decay experiments were conducted for the raw water from Nakdong river that is treated by Chilseo Water Treatment Plant (CWTP) situated in Haman, Korea as well as the effluents from sand and granular activated carbon (GAC) filters of CWTP and fitted using a chlorine decay model. The model estimated the fast and slow reacting nitrogenous as well as organic/inorganic compounds that were present in the water. It was found that the chlorine demand due to fast and slow reacting (FRA and SRA) organic/inorganic substances was not reduced significantly by sand as well as GAC filters. However, the treated effluents from those filters contained FRA and SRA that are less reactive and had small reaction rate constants. For the effluents from microfiltration, ultrafiltration, and nanofiltration the chlorine demand due to FRA and SRA were further reduced but the reaction rate constants were larger compared to those of sand and GAC filter effluents. This has implications in the formation of disinfection by products (DBPs). If DBPs are assumed to form due to the interactions between chlorine and SRA, then it is possible that the DBP formation potential in the effluents from membrane filtrations could be higher than that in the effluents from granular media filters.     

GAC强化砂滤池处理微污染水中试研究

文章以GAC强化砂滤池中试试验为基础,研究GAC强化砂滤池如何完善普通砂滤池对有机物和"三氮"的去除效果。实验结果表明:GAC强化砂滤池对浊度的平均去除率为92.78%;对高锰酸盐指数的平均去除率为15.67%;GAC强化砂滤池滤后水与待滤水相比,氨氮含量减少69.15%,亚硝酸盐氮增加93.08倍,硝酸盐氮增加16.54%。由此可见,GAC强化砂滤池的生物作用要明显优于普通砂滤池。     

电化学合成臭氧技术的研究动态

臭氧/催化臭氧化技术在给水处理、污水深度处理以及难降解废水的处理中引起了广泛关注。传统的臭氧使用方法是将由氧气生成的气相臭氧溶入水中而得以应用。为了使臭氧更好的应用于水处理领域,采用电化学方法直接从水溶液中合成臭氧的技术近年来受到关注并得到重要发展,该技术设备简单,且能避免传统的气相合成臭氧技术的氮氧化物污染和臭氧的气/液转移损失,电极材料的发展和反应器系统的优化是推动此技术应用的关键。文章介绍了电化学合成臭氧技术的基本原理及其研究动态,重点评述了用于该技术的不同电极材料及其研究应用现状,同时也分析了电化学合成臭氧反应器的发展情况,指出了目前电化学合成臭氧技术存在的主要问题和研究重点,并对该技术的发展前景进行了展望。     

N,N-二甲基甲酰胺(DMF)废水处理研究进展

DMF是一种性能优良的有机溶剂和精细化工产品中间体,工业用途广泛,但DMF有毒性,难生物降解.在此综述了DMF废水的主要处理方法,包括生物降解、吸附、萃取、化学氧化、碱性水解等,分析了各种方法的优缺点及适用范围,并展望了DMF废水处理工业化应用的研究方向.