共查询到20条相似文献,搜索用时 300 毫秒
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文章所阐述的处理渗沥液工程位于浙江省内,并着重介绍了厌氧-膜生物反应器(MBR)-膜[纳滤系统(NF)-反渗透系统(RO)]结合工序在能源再生厂渗沥液处理中的工程应用,设计处理量为900 m3/d。系统长期运行稳定出水,CODCr去除率达到99.9%,CODCr≤40 mg/L,氨氮去除率达到99.5%,氨氮≤10 mg/L,总氮(TN)去除率达到99.5%,TN≤10 mg/L,氯离子≤150 mg/L,出水水质满足《城市污水再生利用工业用水水质》(GB/T 19923—2005)中的敞开式循环冷却水系统补充水标准。工艺系统外排清液可以排入能源再生厂冷却塔中进行回用。NF单元浓液进入NF浓液单元处理,NF浓液单元浓液纳入能源再生厂中,RO单元所产生的浓液进入RO浓液单元[软化+管式超滤(TUF)膜+碟管式反渗透(DTRO)膜]处理,RO浓液单元浓液进入能源再生厂循环利用,工艺系统出水实现了废水零排放。 相似文献
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为进一步节约水资源,实现水资源高效利用的目的,山东某糖业公司在其现有污水处理系统基础上,新建污水回用装置,采用多介质过滤器+浸没式超滤+反渗透组合工艺,对现有二沉池排污水进一步进行回收处理,回用水回补循环水系统。系统运行数月,运行参数稳定,出水水质能够达到《循环冷却水用再生水水质标准》(HG/T3923—2007)的要求。 相似文献
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火力电厂循环冷却排水回用处理工艺研究 总被引:1,自引:0,他引:1
结合火力电厂循环冷却排水回用处理现有工艺,对混凝—超滤(UF)—反渗透(RO)工艺和澄清—过滤—UF—RO工艺进行了试验研究。结果表明,超滤作为RO的预处理具有较大的优越性,混凝—UF—RO工艺虽然可简化处理流程,但膜通量较小,总体投资并未减少,且运行可靠性较差;澄清—过滤—UF—RO工艺出水水质优良(UF出水SDI值小于2,RO除盐率达到99%),UF膜通量可达到3m3/(m2.d),系统运行可靠,运行维护费用低,是较合理的工艺。 相似文献
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针对某焦化厂焦化废水经生化+Fenton氧化处理后的出水可生化性差、COD及电导率高的特点,设计了“多介质过滤+活性炭吸附+超滤(UF)+反渗透(RO)+电渗析(ED)”组合回用处理工艺对废水进行处理。运行结果表明,活性炭吸附塔可有效去除Fenton氧化后废水中的COD,COD去除率达到30%~50%;经过多介质过滤器、活性炭吸附塔、超滤后,反渗透产水率可达到82%,脱盐率大于98%;电渗析装置可有效去除RO浓水含盐量,脱盐率约65%,产水率约55%。经组合回用处理工艺处理后的焦化废水回收率可稳定达到92%以上,产水水质优于《工业循环冷却水处理设计规范》(GB 50050—2017)中再生水水质指标要求,可作为厂区循环冷却水补充水使用。成本分析表明,该工艺吨水运行成本约4.63元,具有较好的经济性。 相似文献
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《广东化工》2021,48(17)
为保证处理后出水达到冷却塔回用水标准,垃圾焚烧发电厂渗滤液的深度处理一般采用NF+RO、DTRO等膜处理工艺,这不可避免地产生膜浓缩液。膜浓缩液产量较大,约为渗滤液处理量的30%~40%,具有高COD_(Cr)、高盐分、可生化性极差等特点,是目前国内外污水处理界公认的难题。近年兴起采用碟式反渗透(DTRO)膜对膜浓缩液进行减量化处理,以减轻膜浓缩在厂内消纳的压力。本文介绍了DTRO工艺在膜浓缩液的减量化处理中的应用情况:DTRO工艺能减少65%膜浓缩液的量,并且产水水质能达到《城市污水再生利用工业用水水质》(GB/T19923-2005)中敞开式循环冷却水系统补充水标准(循环冷却水系统换热器为非铜质)。 相似文献
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中水全膜处理系统在热电厂的应用 总被引:1,自引:0,他引:1
大连泰山热电厂采用超滤(UF)—反渗透(RO)—电除盐(EDI)工艺对马栏河污水厂二级出水进行深度处理,使其满足热电厂超高压锅炉补给水水质要求。作者介绍了系统工艺的设计及设备的运行等,经该工艺处理后的出水可以达到设计要求。通过中水回用,热电厂每年可节约淡水6.25×106 m3,节省资金1 800多万元,社会及经济效益显著。 相似文献
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The experimental results on advanced treatment of secondary sewage effluent by ultrafiltration (UF) and reverse osmosis (RO) are presented in this paper, particularly focused on pretreatment system, operating condition, membrane cleaning system, and product water quality. 相似文献
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针对煤化工企业焦化废水的二级生化出水可生化性差、含盐量与COD高,以及废水中包含多环芳香族化合物、脂肪族化合物等难生物降解污染物的特点,采用Fenton氧化+电渗析+超滤+反渗透膜法组合深度处理工艺对废水进行处理。运行结果表明,产水水质达到并优于《工业循环冷却水处理设计规范》(GB 50050—2007)中再生水水质要求,产水可作为厂区生产补充新水使用,废水回收率稳定达到75%。采用Fenton氧化与电渗析粗脱盐技术相结合的强化预处理设施,可以有效缓解反渗透装置的膜污染,延长反渗透膜的清洗周期至3个月。 相似文献
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《Desalination》2006,187(1-3):335-345
Field experiments are in progress for secondary wastewater upgrading for unrestricted use for irrigation and sustainable agricultural production. The integrative treatment system for the secondary effluent polishing is based on implementing in series of two main treatment stages: ultrafiltration (UF) and reverse osmosis (RO) membrane treatment. The pilot system has the capacity of around 8 m3/h. The UF effluent is used to feed the RO membrane stage. Different mixtures of UF and RO permeates are subsequently applied for drip irrigation of various agriculture crops. The field results indicate the importance of the UF component in the removal of the organic matter and the pathogens that are still contained in the secondary effluent (the secondary effluent is obtained from a waste stabilization pond treatment system). Under specific conditions, when the dissolved solids content is relatively low, the UF effluent can be applied directly for unrestricted irrigation. In the successive RO stage most nutrients are removed, allowing applying the effluent without jeopardizing the soil fertility and the aquifers. Preliminary economic assessment indicates that the extra cost for effluent polishing via the UF stage only is in the range of 8–12 US cents/m3. The extra cost for the RO stage is as well assessed at 8–12 US cents/m3. The additional treatment expenses depend to a large extent on the quality of the incoming raw secondary effluent and local requirements at the command agricultural production sites. 相似文献
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Gideon Oron Leonid Gillerman Nissan Buriakovsky Amos Bick Moti Gargir Yonthan Dolan Yossi Manor Ludmilla Katz Josef Hagin 《Desalination》2008,218(1-3):170-180
Treated domestic secondary effluent is a valuable water source that can be reused for diverse purposes. However, in order to minimize health and environmental risks and to maintain adequate levels of sustainable agriculture production on a long range time scale, advanced treatment is required. Advanced effluent quality maintaining minimal risks can be primarily attained by implementing the membrane technology. Field experiments are in progress for secondary wastewater polishing for unrestricted reuse for sustainable agricultural production. The two stage membrane treatment system for the secondary effluent polishing consists of combining two main stages: ultrafiltration (UF) and reverse osmosis (RO) membrane treatment. The UF stage is efficient in the removal of the organic matter and the pathogens while the RO provides the dissolved solids (salinity) removal. Effluent of various qualities is applied for irrigation along with continuous monitoring of the membrane components performance. The experimental data was obtained in the ongoing pilot studies carried out near the City of Arad (Israel) wastewater treatment system (the pilot plant performs in a feed and bleed operation mode). The results indicate the importance of maintaining high quality effluent for sustainable agriculture production. The management modeling gives an idea of the importance in maintaining adequate UF flushing policy in order to minimize expenses due to fouling. 相似文献
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武城县瑞源水厂以南水北调东段末端调蓄水库大屯水库为水源,原水中氟化物和硫酸盐超标,采用常规处理+臭氧-活性炭工艺并不能去除氟化物和硫酸盐,此次水厂升级改造采用超滤-反渗透双膜法对活性炭滤池出水进行深度处理。膜车间出水与活性炭池出水以1∶2勾兑后,氟化物浓度≤1 mg/L,硫酸盐浓度≤250 mg/L,水质达标,运行稳定。通过对工艺设计参数及运行效果现状分析,总结了双膜法在工艺设计及水厂运行方面的经验,建议工程设计处理氟化物和硫酸盐时采用双膜法,运行时加强数据监控,及时进行清洗护理工作,以延长膜组件使用寿命,降低水厂运行成本。 相似文献
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超滤和反渗透联用的海岛饮用水处理示范装置 总被引:1,自引:0,他引:1
针对某些海岛山塘水库含盐量不断变化的水质特点,开发超滤和反渗透联用的海岛淡水净化/咸水淡化一体化装置。结果表明,对于电导率约580μS.cm-1,浊度约20 NTU,CODMn约5.9 mg.L-1的原水,当超滤和反渗透产水比为1:1时,超滤产水电导率基本不变,浊度约0.1 NTU,CODMn降低约40%,混合产水电导率接近于原水的一半,浊度约0.04 NTU,CODMn约1.7 mg.L-1。此外,无论原水电导率如何变化,均可通过调节产水比使最终产水达到生活饮用水卫生标准。介绍了工艺流程、运行情况,并对运行数据进行分析。 相似文献