浅析钢铁企业综合污水处理厂中水回用问题及建议

结合酒钢集团综合污水处理厂中水回用的现状,对综合污水处理厂的主要处理工艺及进出水水质进行了阐述,对钢铁冶金综合污水处理中水回用方面存在的问题进行分析并提出解决措施和建议。     

浸没式MBR在钢铁厂废水处理中的应用

膜生物反应器(MBR)是将生物处理与膜分离技术相结合的一种高效污水处理与回用新工艺。广州JFE钢板有限公司冷轧工程废水站生化处理单元选用了浸没式膜生物反应器(MBR)工艺,运行平稳,出水水质稳定,为后续废水深度处理回用奠定了坚实的基础。本文介绍浸没式膜生物反应器(MBR)的材质、结构、工作原理、设计参数、运行状态及膜装置的清洗、储存等。     

提高污水处理厂中水回用率的研究

本文对我公司工业污水处理现状和存在的问题进行了初步的分析和探讨,指出导致中水回用率低的几个原因,并从调整污水厂设备运行方式,改善运行环境,调整药剂投加方式等多方面着手采取行之有效的措施,大大提高了中水回用率,取得了一定的经济效益、社会效益和环境效益。     

城镇污水处理厂项目应注意的问题

文章结合实例介绍了城镇污水处理项目的项目特征,论述了此类项目环评应注意的几个主要共性问题:工程选址方案比选、污水处理工艺选择、恶臭污染防治措施、污泥处置、中水回用,可为同行借鉴。     

中水回用工业循环水的研究与应用

介绍中水回用问题的提出,宝钢钢管厂中水的现状及企标、国标对中水的要求.针对中水指标的不合格项目,通过理论研究制定了试验方案,并对现场实施效果进行系统分析.说明了中水回用具有开源节流、减少水污染的双重功效,钢管中水回用于工业循环水技术具有一定的推广应用价值.     

绿色低耗技术在铝型材氧化电泳表面处理生产中的实验研究

针对传统铝合金氧化电泳表面处理生产中普遍存在的水耗高、中水回用率偏低及节水减排技术落后等行业共性问题,通过探索及设计绿色低耗集成技术,实现大幅提升中水回用率、降低三废排放的目的,践行绿色低碳发展理念.     

校区中水回用技术应用研究

根据工程实例,对建筑中水回用技术进行了系统研究.建筑中水可以减轻水污染环境问题,对缓解城市水资源短缺提供了一条途径.     

杭钢集团节水措施及发展趋势

介绍了杭钢集团用水情况及历年来的节水措施、发展历程,中水回用工程及未来的节水发展方向。     

双膜法污水处理回用锅炉补充水实验研究

进行了CMF＋RO双膜法处理城市污水中水回用锅炉补水的实验研究,分析了中水处理后回用于锅炉补充水的可行性及经济效益。     

湘钢总排废水深度处理与回用实践

介绍了湘钢工农闸总排水处理与回用工程主体工艺：调节池-混合池-澄清池-V型滤池-接触消毒池-清水池,总结了运行问题及解决方法。实践表明,出水水质指标达到设计要求,中水回用率达82%以上。     

铜加工工业废水的治理与复用

通过对洛阳铜加工厂工业废水的治理与利用的研究,提出综合治理的方案,治理方法与流程,处理后排放的废水各项指标大大改进,节约成本,降低排放量。     

浅谈选矿厂废水及其治理方法

用化学方法净化选矿废水中的有毒物质，加强废水的治理利用，既节省选矿药剂，使其达到国家排放标准，又有利于保护环境。     

山西焦化厂酚氰废水处理现状及发展趋势展望

简要介绍山西焦化厂酚氰废水处理工艺及回用现状,并对干熄焦技术实施以后所带来的酚氰废水出路问题进行了探讨,对焦化酚氰废水的深度处理工艺和回用途径进行了分析,提出了减量化和资源化是焦化企业酚氰废水"零排放"的根本出路。     

蒸发结晶应用于APT生产废水处理与回用

APT(仲钨酸铵)生产过程中产生大量废水,废水中含有大量硫酸镁、硫酸钠及少量的重金属离子,如不进行处理直接排放,则会造成严重污染并造成水资源浪费。文章以某APT(仲钨酸铵)项目为例,提出针对性的治理及废水回用方案。该项目实施后,可减少7.2×104t/a的工业污水排放,每年还可回收硫酸钠8600t、硫酸镁1317t(折算成七水硫酸镁),实现了资源回收及水资源可持续发展。     

膜技术在邯钢中水回用系统中的应用与探讨

邯钢运用膜技术深度处理中水,满足了企业不同用户的用水水质要求,提高中水回用率,可使吨钢耗新水指标降低至4m~3以下。     

全泥氰化炭浆提金工艺含氰尾矿处理技术改造与实践

介绍了一种全泥氰化炭浆提金工艺含氰尾矿处理技术新工艺方法。该方法基于采用压滤机将含氰尾矿浆压滤进行固液分离，滤饼送至尾矿库堆放，滤液用锌粉置换回收金、银；置换后的尾液采用酸化中和法处理。回收重金属离子，含氰废水返回流程利用。生产实践表明。该工艺不但综合回收尾液中的金、银、铜等有价元素，实现了含氰废水闭路循环。而且节约了处理成本。解决了尾渣的堆放难题和环境污染，具有极大的经济效益和社会效益。     

Electrochemical Oxidation and Ozonation for Textile Wastewater Reuse

Ozone and electrochemical oxidation treatment technologies were evaluated for wastewater recycling in the textile industry. Textile wastewater was collected from eight textile mills that use different dying processes. Both ozone and electrochemical oxidation removed the color from wastewater containing acid, reactive, and natural dyes, while mixed results were achieved with pigment and disperse dyes. The variability in color removal for the pigment and disperse dyes may be related to the concentration and type of auxiliary chemicals used. Color criteria for reusing wastewater for reactive dye was determined to be ΔE ? 2. This level of treatment provided an acceptable level of residual color for reuse in dark color dyeing operations and for rinse water. Some reformulation of the dye concentration and auxiliary chemicals is necessary for wastewater reuse in light color dyeing operations. Also, multiple reuse of the treated wastewater, as would occur in a completely closed system, would require changes in salt and other auxiliary chemicals to achieve the same fabric color as clean process water.     

Evaluation of a System for Residential Treatment and Reuse of Wastewater

Approximately one-quarter of housing units in the United States are not connected to centralized, publicly owned wastewater treatment works and instead operate their own cesspools or septic tanks that provide only partial treatment. A study was conducted in which a commercially available, on-site, residential wastewater package unit was tested at its design capacity according to an established protocol to determine if it could produce a high-quality effluent. Additional pilot-scale sand filtration and ultraviolet disinfection units were fabricated and operated to determine the feasibility of producing recycled water suitable for residential reuse and which could meet strict water reuse regulations. The results indicate that the package unit can produce an effluent equivalent to secondary effluent when properly operated and maintained. In addition, using add-on sand filter and ultraviolet light disinfection units, it was possible to produce the highest quality of reclaimed water recognized by Hawaii regulations (oxidized, filtered, disinfected, unrestricted use). It was also possible and may be economically feasible to produce a slightly lower quality reclaimed water (oxidized, disinfected, R-2) suitable for residential subsurface irrigation.     

浅析污水的性质和污水处理必要性

水是人类生存之本,用发展的眼光去看问题,水将是制约承钢发展的重要因素,为此污水的再利用将是缓解水资源缺乏的首选之计。本文从水质的性质、处理方法和效果等方面介绍了水的一般知识,并简单陈述了承钢主要二级生产单位的污水来源,阐明了污水处理的长远意义。     

Water Reuse/Recycling and Reclamation in Semiarid Zones: The Israeli Case of Salination and “Hard” Surfactants Pollution of Aquifers

The essence of three case studies in relation to the global problem of surface and groundwater contamination by inorganic salts and biodegradation-resistant (“hard”) nonionic surfactants (APEOs) is presented and the results analyzed as far as the long-term consequent water salt and APEO profiles are concerned. The main conclusion derived is that sustainable large-scale reuse/recycling and reclamation in semiarid zones requires a combined desalination-biological treatment of APEO-free sewage/wastewaters before their reuse. This should be done without delay in order to ensure the quality of the supplied water from the scarce resources and to avoid, most probably, an irreversible process of aquifer contamination in these zones.