金山廊下污水厂尾水处理人工湿地设计与营建

为探索更佳的人工湿地在城市污水处理厂尾水生态处理中的应用方式.以廊下污水处理厂尾水无害化利用工程为例,提出一种湿地工程基建营造和湿地植物合理搭配为一体的工程方案.在廊下镇实施生态湿地景观修复工程中在保证尾水水质修复的的同时,提升了湿地的生态服务功能及自然景观效果,污水处理厂尾水得到深度净化,可为改善城市水环境质量提供参...     

绍兴污水处理厂三期工程尾水外排系统设计

绍兴污水处理厂三期工程建成后,污水处理厂内总处理规模将达到90×104 m3/d,根据环保主管部门要求,需新建尾水外排管线将污水处理厂尾水排至钱塘江.介绍了尾水外排管线工程主要的设计参数,设计中充分考虑了安全、环保和节能等要求.     

关于对污水处理档案管理工作中的几点体会

青岛市海泊河污水处理厂隶属于青岛市排水管理处，位于青岛市市区海泊河入海口南岸，占地面积13公顷，一九九一年三月正式开工建设，一九九三年七月正式运转，、日处理污水8万吨。青岛市海泊河污水处理厂是利用奥地利政府贷款，引进污水处理技术和设备而建设的大型污水处理厂，固定资产约一亿元，随着城市的建设和发展，     

污水处理厂长距离大口径尾水外排管设计

介绍了常州市江边污水处理厂大口径尾水外排管的设计。尾水外排管线总长2 450 m,管径DN3000。尾水通过长江边的排江泵站提升至高位井后利用管道深水排放入长江。分别阐述了管径与管材的选择,工作井、接收井结构围护方案及施工工艺。     

烟台套子湾污水处理厂尾水排海管道工程设计及运行

沿海城市利用海洋的自净能力对污水处理厂的尾水进行深海排放,使尾水进一步扩散稀释,达到保护环境的目的。简述了烟台市套子湾污水处理厂尾水排海管道路由的选择、工艺设计和结构设计,介绍了排海管道现状、排污混合区的划分及混合区以外的海水水质情况,并指出了存在的问题。     

鸡冠石污水厂利用尾水落差建设发电站的经验总结

重庆鸡冠石污水处理厂利用尾水落差建设发电站,对污水处理厂建设发电站的必要性、设备选型、环境影响、工程投资和经济效益测算、工程实施情况、发电量波动原因和运行管理进行了分析和总结,并对污水处理厂尾水电站提出了建设性的意见和建议.     

生活污水处理厂选址及优化设计

污水处理厂的设计及设计优化直接关系到经济效益、工作效率以及社会效益,工程设计及设计优化是决定项目成败的重要因素。1.污水处理厂选址示例某镇为方便排水将污水处理厂建在河边,由于设计没有考虑小河的容量,污水厂实际运行后的尾水排放量远超过小河的容量,致使污水淹没了周围鱼塘,最后只好再建污水排放提升泵站,由于设计选址的问题,从而加大了污水处理厂的建设成本和运行费用。     

侧向流斜板沉淀/纤维转盘过滤用于污水厂升级改造

河南省某污水处理厂升级改造工程设计规模为15×104m3/d,深度处理工艺采用折板絮凝/侧向流斜板沉淀/纤维转盘过滤工艺,尾水采用二氧化氯消毒,出水水质稳定达到《城镇污水处理厂污染物排放标准》(GB 18918—2002)的一级A标准。主要介绍了该深度处理组合工艺的主要特点、技术参数及运行效果。     

电解强化人工湿地处理城市污水处理厂尾水中微生物群落分析

一个新型的电解人工湿地能够成功地对污水处理厂尾水中的氮、磷进行深度脱除,但其中的微生物机理和人工湿地对受水河道微生物生态的影响还远未清楚。采用高通量测序和网络分析对电解强化人工湿地中的功能微生物群落进行了研究,结果显示,电解强化人工湿地中有大量的自养型反硝化功能菌,从而保障了在低碳氮比下污水处理厂尾水中氮的脱除。经网络分析还发现,经过电解强化人工湿地后,污水处理厂尾水中的细菌群落与受水河道有显著差异,人工湿地可在污水处理厂与自然水体间起缓冲作用,更有利于减少污水处理厂尾水对自然水体的生态扰动。     

横流式复合生物滤池用于污水处理厂尾水深度处理

针对污水处理厂尾水作为景观补水普遍存在氮、磷等污染物超标的问题,采用"预处理系统+横流式复合生物滤池"工艺,对污水处理厂尾水进行深度强化处理。运行结果表明,该工艺对污水处理厂尾水净化效果良好,对COD、BOD5、SS、TN、NH3-N和TP的平均去除率分别为47.2%、73.7%、73.1%、30.9%、44.6%和32.6%,出水水质(除TP外)均达到《城镇污水处理厂污染物排放标准》(GB 18918—2002)的一级A标准。     

H市河道水环境评价及综合治理工程设计

河北省H市由于市政基础设施久未更新,且排水管网存在污水直排、雨污混接等现象,城区内河水质基本为劣Ⅴ类。为有效控制和改善当地城区内河污染情况,对H市城区内的河渠进行了水环境调研与评价,并以“控源截污、内源治理、生态修复、统筹兼顾”的整体思路提出治理方案,旨在实现水环境改善与生态协调的双重目标。     

Effect of the EC Urban Wastewater Treatment Directive on Marine Treatment Practice

The EC Directive on urban wastewater treatment will have a considerable impact on the methods used for the treatment and disposal of sewage at coastal locations. The Directive requires the natural processes involved in marine treatment to be enhanced by the use of land-based treatment to meet the same standards.
This paper discusses the implications of this change, in particular the problems involved in constructing and operating conventional treatment plants at coastal locations. Planning problems, both locally and on a catchment basis, are considered. It is concluded that these difficulties point to a need for new thinking in catchment planning and in the design and construction methods used for treating wastewaters in coastal communities. This is illustrated with UK and continental examples.
In addition, the implications in terms of outfall design are discussed. It is shown that the change of emphasis towards land-based treatment does not necessarily reduce the need for a high degree of dilution and dispersion in the sea in order to meet environmental standards. As a result, sound planning, design and operation of long sea outfalls remain as important as ever.     

城镇污水管网现状调查及整改对策研究

随着我国经济的迅速发展,城镇基本上都建起了污水处理厂,城镇污水处理厂是城镇控制水污染、改善和保护环境的重要工程设施,但污水处理厂却普遍存在并且长期存在进水实际浓度远低于设计值问题,并没有发挥其效能保护环境。因此,通过对城镇污水管网进行详细的调查,发现污水管网主要存在破损,局部高程设计不合理,管网淤塞,排水体制混乱等九大问题。针对这些实际问题,结合当地的实际情况提出相应有效可行的工程措施和管理措施,同时也对污水管网的建设、管理与维护提出了要加强排水档案管理,完善管网工程的监理和验收体制,建立雨污分流制等一些合理的建议,希望能对城镇污水管网的规划、建设、改造等方面起到一定的借鉴作用。     

三段线性近似法在污水处理投资估算中的应用

在满足水环境标准要求的情况下 ,对沿河流若干个城市污水处理设施怎样进行选择适宜的处理效率 ,而相应的投资费用最少 ?笔者根据河流中有机物迁移扩散提出了非线性规划数学模型 ,并采用三段线性近似法将非线性费用函数转化成为线性目标函数 ,得出在适宜的处理效率时的最优投资 ,能够为环境投资者提供相应投资估算的指导     

An index directly indicates land-based pollutant load contributions of domestic wastewater to the water pollution and its application

As indices directly indicate land-based pollutant load contributions to public water pollution, pollutant load per capita flowing into the water body (PLCwb) for the drainage areas of inner city rivers in Chiba City, Chiba Prefecture, Japan, was analyzed. It was reaffirmed that PLCwb was different by the drainage area. For example, the biochemical oxygen demand (BOD) load per capita flowing into the water body (PLCwb-BOD) was calculated as 0.83 g BOD person(-1) day(-1) for population served with wastewater treatment plant (WWTP). In regards to the three types of on-site domestic wastewater treatment methods in Japan: 0.4-2.1 g BOD person(-1) day(-1) for combined jokaso (CJ), 4.5-21 g BOD person(-1) day(-1) for simple jokaso (SJ) and 4.3-19 g BOD person(-1) day(-1) for night soil treatment (NST). In regards to nutrient parameters of the three on-site treatment methods, population weighted average of PLCwb were almost the same, however, relatively small PLCwb were observed for CJ and SJ through the analysis. Environmental accounting housekeeping (EAH) books for domestic wastewater were prepared based on the analysis results as the application of the indices. EAH books are effective tools for water pollution mitigation in public water bodies. The results of the preliminary correlation analysis of the indices showed that high-efficiency treatment methods including WWTP, agriculture village wastewater treatment facility (AVETF) and CJ are effective in reducing pollutant load flowing into the water body, and that PLCwb have second-order equation relationships with population density of the drainage area. Judging from these characteristics and the analytical results of this study, PLCwb may be useful as an index for demonstrating the benefit of wastewater treatment in reduction of water pollution in the water body.     

Pollution source control by water utilities – characterisation and implications for water management: research results from England and Wales

The treatment of agriculturally polluted water to potable standards is costly for water companies. Changes in agricultural practice can reduce these costs while also meeting the objectives of European Union (EU) environmental legislation. In this paper, the uptake of source control interventions (SCIs) by water and sewage companies in England and Wales as a means of controlling agricultural pollution is investigated. Data were gathered using semistructured interviews with water and sewage company representatives. Interview data were processed using thematic and content analysis. Results showed that SCIs are increasingly being adopted in England and Wales. Of the four types of SCI identified, the so‐called ‘Liaison’ type dominated. This type of intervention requires intermediary organisations with local expertise in water catchments. Differences in pollution source control between EU countries, and England and Wales are examined. Evidence indicated that ‘Liaison’ SCI s types may be more prevalent in countries where water supplies are privatised.     

广州珠江河段水质环境保护整治的现状与对策

水环境资源是人类赖以生存的资源。城市污水治理工程是水环境的重要基础设施工作。阐述了广州市水环境状况、排水工程及主要污水处理厂的现状。针对水环境资源存在的问题,提出了在污水处理中,对污泥的处置、臭气污染的控制、河涌的截污和生态修复等对策和措施。     

杭州市中东河水质现状及修复措施

大量污水、污物的排入致使杭州市中河和东河污染严重，为此对污、废水排放和底泥的污染物释放等进行了分析，并提出了截污纳管、引水配水和疏浚清淤等修复措施，最后采用改进的一维水质模型对修复结果进行了预测。     

Water quality in Scotland: the view of the regulator

Water quality in Scotland has progressively improved over the past 50 years as the environmental damage, which resulted from the industrial revolution, has been addressed. This paper provides an overview of current water quality in rivers, lochs, estuaries and coastal waters and describes the limited information available on groundwater. The main factors affecting water quality are reviewed, with sewage, diffuse agricultural pollution, acidification and urban drainage identified as the most important. Trends in pollution pressure and levels of investment in pollution control have been used to predict the condition of Scotland's surface water over the next 10 years. Major improvements are expected. However, progress will be slowed by the increased relative importance of diffuse sources of pollution, which are less amenable to legislative controls. Future changes in environmental monitoring are also expected to move the emphasis away from point source pollution. The current freshwater classification schemes are based upon a relatively narrow measure of water quality and are expected to expand to include a wider range of ecological parameters. This will result in an increase in the waters defined as impacted as the effects of other environmental pressures are taken into account. Finally the implications of these changes for the future management of the aquatic environment are assessed.     

洱海面源污染分级调蓄处理技术方案探讨

针对大理市洱海水质改善面临的技术考验,在《洱海环湖截污工程PPP项目》的基础上,研究了洱海面源污染调蓄处理技术方案,首次提出面源污染控制空间格局和污染源多级阻力面理念.该方案以海绵蓄渗设施、城镇污水处理厂、生态塘库、生态湿地构建了城镇面源污染控制四级调蓄处理系统;以生态塘库、生态河流、湖滨生态带构建了农业面源污染控制三...