大姚电厂总排水水质预测

火电厂排水对环境的影响不仅要考虑灰场灰水,而且要考虑厂区下水道即总排口排水对环境水体的影响,尤其在水源保护区附近。对于新建电厂,无法获得总排口水水质实测资料。要做好环境评价,就必须对总排口水水质进行预测。笔者在进行巢湖大姚村电厂(新建40万瓩机组)水体环境影响评价时,对该电厂总排口排水水质进行了预测,供同行参考。     

海水烟气脱硫工艺排水对区域海水的影响

根据深圳西部电厂海水脱硫工艺运行后排水水质监测及试验结果,对几种主要污染物（尤其重金属）的影响进行了分析。结果表明,海水脱硫工艺排水不会影响周围区域海水水质,也不会对区域海洋生态环境造成不良影响。     

火电厂排水用于循环冷却补充水的探讨

以淮北等电厂应用厂区排水，徐州等电厂应用灰渣排水作为循环冷却补充水的工程为实例，对水量水质与工艺流程作了介绍；对净化技术和运行综合参娄和作了汇总，根据我国火电厂水量水质多年来的调查统计资料，就循环冷却补充水应达到的水质提出了一些看法，并对火电厂排水净化工艺与开展排水资源化工作提出了探讨意见     

水质卫生综合指数在地下水评价中的应用

水质卫生综合指数考虑了不同水质指标对人体的生物效应、水质总体污染水平、个别较高的污染物以及各种水质指标的离散程度,不仅能分辨水质的优劣,而且能给出水质的安全程度。实际应用表明,水质卫生综合指数在地下水能否作为生活饮用水的评价上更为科学、全面。     

放植水生植物改善排灰水质的试验研究

引言为了改善火电厂灰场排水水质,解决发水浸入农田的污染问题,田家庵发电厂、淮南市农科所于1985年8月在上窑灰场水面进行了放植水葫芦的小区试验,以给大面积放植水生植物提供依据。该试验1986年被列为市环保局课题,1997年由淮南市化校主持了室内补充试验。1材料与方法1985年8月25日,在田家庵电厂上窑灰场排灰水中放植了小面积的水葫芦,以竹杆围界。在此基础上,又于1985年11月至1986年4月,进行水葫芦母株越冬管理。越冬场所设在淮南电厂冷却水排放处的低洼地。把一个深70cm、面积约666．7m2的浅塘,在浅塘内搭建塑料棚4栋,井挖有…     

水质稳定技术（三）

三、日常运行时的水质稳定检测日常运行时水质稳定检测非常重要。通过分析、检测各种有关水质的变化信息,从而不断掌握和调整水质稳定的操作参数,以保证生产的正常运行。(一)水质分析监控做好循环水和补充水的水质分析,是保证生产稳定运行的关键。水质分析项目较多,可视用户的需要予以确定。     

灰水再循环系统回水水质分类的探讨

本文介绍了在灰水闭路循环动态模拟试验台上，各因素（如煤种、冲灰原水水质、回水水质、水灰比等）对闭路循环回水水质影响的试验结果，以及灰场曝气对降低灰水pH值的作用。根据试验结果，提出了闭路循环平衡水质的计算方法，并从结垢角度出发，探讨了灰水闭路循环水质分类法。     

我国火电厂排水水质现状

为了掌握我国火力发电厂排水的水质和水量现状,我们收集了装机容量为5万瓩以上的132个电厂排水资料,其中大部分是1985年工业污染源普查时的分析数据和1986年的环境监测值,只有极少数是1985年以前的分析数据。因此,这些资料基本上反映了目前我国火电厂废水排放状况。由于有的电厂提供的排水水质数据不全,在综合分析时按各个水质指标分别统计分析并在统计分析结果中列出了按各个指标所统计的电厂数目。     

水环境监测结果的审核重点与审核方法

环境水质监测分析过程中水质指标多,监测数据多,数据的审核工作比较复杂。数据审核是水质分析工作质量保证的一个重要环节,是整个质量保证体系中有效的控制手段。主要从理论上分析环境监测中水质指标之间的关系,为水质监测人员监测和数据审核提供参考,从而提高数据质量,为环境水质管理服务。     

岷江上游桃关——中滩铺河段水质现状评价

本文介绍了岷江上游桃关——中滩铺水质现状。通过调查与水质监测,该段的水质污染受地表径流和工业废水的制约。为保护水质,必须恢复上游的森林植被,减少水土流失;控制发展有污染的工业,使废水达到排放标准排放;加强水质监测,明确管理方向。     

海水烟气脱硫系统排水水质试验研究

介绍了海水烟气脱硫技术在国内外的应用情况,探讨了海水烟气脱硫系统的基本原理及工艺流程,并以海水水质标准为参照通过试验方法研究了脱硫排水对海水本底浓度的影响。     

Groundwater and Nutrient Discharge into Jiaozhou Bay,North China

The health of near shore marine ecosystems has long been a concern because of its importance to coastal areas. Jiaozhou Bay (JZB) is one such marine ecosystem experiencing rapid water quality degradation in the last several decades. From the area surrounding the bay, the nutrients discharged into the bay through surface water and groundwater has been greatly changed. The thickness of the aquifers and the permeability is relatively high, the concentrations of nutrients in the groundwater are generally high, and so the groundwater discharged into JZB is very significant. However, no attempt has ever been made to evaluate the amount of nutrients discharged into the bay area via groundwater. In this study, the cross-section method and water balance method were used to estimate the amount of groundwater and nutrients discharged into JZB via the subsurface. Groundwater was monitored and sampled at aquifers surrounding the bay area, and some previously available data was also analyzed. The results indicated that groundwater from the Baisha Aquifer east of JZB now is the major source of nutrients (nitrate, dissolved SiO₂) being discharged into the bay. The concentrations of nutrients in the groundwater have been increasing with intensive agricultural land use. However, Dagu Aquifer, the largest aquifer north of JZB, only provides limited nutrients to the bay area because of the construction of a low permeability subsurface dam. Historically, during the 1970s to the 1990s, the Baisha Aquifer experienced seawater intrusion due to excessive groundwater withdrawal. The same was true for the Dagu Aquifer from the 1980s to the 1990s. Because of this, no significant nutrients were discharged into the bay.     

膜法海水淡化技术在玉环电厂的应用

华能玉环电厂4X1000MW燃煤机组生产用水全部采用经“膜法”海水淡化技术处理的淡化海水，该淡水海水具有较强的腐蚀性，对电厂脱硫系统产生一定影响，探讨了淡化海水对脱硫系统的腐蚀及应对措施。     

马头电厂废水处理系统介绍

介绍了河北马头电厂废水处理工艺系统流程、设计及系统调试运行指标。处理后的电厂废水作为循环冷却水的补水,减少了新鲜水用量和污水排放量，对北方地区厂区废水回收利用具有借鉴意义，在火电厂废水资源利用方面有很好的应用前景。     

曝气生物滤池在中水回用于循环冷却水中去除氨氮的探讨

介绍了曝气生物滤池（BAF）工艺应用于脱氮方面的特点，探讨以该工艺处理市政污水厂二级出水，以回用于火电厂循环冷却水的优越性。     

Limitations on infiltration and reinjection of treated groundwater to remove trace amounts of pesticides in groundwater and soil

Infiltration and reinjection of treated groundwater have been used to increase the recovery of pesticide-related constituents at a pesticide formulation plant that produces consumer pesticide products. The stratigraphy at the site consists of silty and sandy clay deposits overlying a shallow silt, sand, and gravel aquifer. The groundwater and soils in two areas in the northwest portion of the property have been identified as being significantly affected by pesticide and pesticide-related compounds. An integrated system of soil removal, recovery wells, injection wells, an infiltration gallery, and a cut-off wall was selected as the best remedial alternative. Groundwater modeling, column tests, biological jar tests, and a pilot test demonstrated the feasibility of the system. The affected groundwater is treated to drinking-water quality by a system of filtering and carbon adsorption. Approximately 75 percent of the treated water is reinjected or allowed to infiltrate through the vadose zone, and the remainder is discharged to the local sewer system. Initially, the system was effective in removing the dissolved, suspended, and weakly adsorbed constituents. Subsequently, the recovery rate of the chemical constituents became dependent on chemical and physical processes related to the presence of residual amounts of dense, nonaqueous phase liquids and the clay content of the strata. The rate of pesticide recovery has decreased because of the retarding effect of the clay and the low solubility of the pesticides.     

Case study of ex situ remediation and conversion to a combined in situ/ex situ bioremediation approach at an oxygenated gasoline release site

In response to an oxygenated gasoline release at a gas station site in New Hampshire, a temporary treatment system consisting of a single bedrock extraction well, a product recovery pump, an air stripper, and carbon polishing units was installed. However, this system was ineffective at removing tertiary butyl alcohol from groundwater. The subsequent remedial system design featured multiple bedrock extraction wells and an ex situ treatment system that included an air stripper, a fluidized bed bioreactor, and carbon polishing units. Treated effluent was initially discharged to surface water. Periodic evaluation of the remediation system performance led to system modifications, which included installing an additional extraction well to draw contaminated groundwater away from an on‐site water supply well, adding an iron and manganese pretreatment system, and discharge of treated effluent to an on‐site drywell. Later, the air stripper and carbon units were eliminated, and an infiltration gallery was installed to receive treated, oxygenated effluent in order to promote flushing of the smear zone and in situ bioremediation in the source area. This article discusses the design, operation, performance, and modifications to the remediation system over time, and provides recommendations for similar sites. © 2007 Wiley Periodicals, Inc.     

A Case Study of the Beneficial Reuse of Treated Groundwater

The future disposal of treated groundwater at the former Nebraska Ordnance Plant (NOP) Superfund site has been a topic of interest to the local property owners, the U.S. Army Corps of Engineers, and the local regulatory agencies. The Record of Decision for the site includes the extraction, treatment, and disposal of almost 3,000 gpm of groundwater with an estimated restoration time period exceeding 100 years. Interest from property owners and the Nebraska agency charged with regulating groundwater supply prompted the Corps of Engineers to consider several strategies for beneficially reusing the treated water. Alternatives included the establishment of a rural water district or local distribution system; delivery of the water to the municipal supply system of Lincoln, Nebraska, andsol;or other nearby municipalities; and consideration of innovative remedial technologies to reduce the quantity of treated water requiring disposal. The selected disposal plan consists of providing treated groundwater to interested parties for agricultural use with excess treated groundwater discharged to two streams. Multiple feasibility studies were generated, public input was solicited, and interagency agreements were executed during the course of the project. The remediation project is currently being constructed, and at least one property owner has constructed a new center‐pivot irrigation system to use the treated groundwater. © 2001 John Wiley & Sons.     

Rehabilitation of the chernoistochinskii drinking water system,Nizhnii Tagil,Russia

The U.S. Environmental Protection Agency (EPA) performed a reservoir diagnosis and developed low-cost recommendations to improve drinking water quality for the city of Nizhnii Tagil, Russia. Despite widespread regional pollution, water quality within the drinking water supply source can be summarized as generally good. Sampling and analysis efforts did not reveal appreciable amounts of hazardous chemicals or metals. The major water quality problem stems from an abundance of blue-green algae during the summer months, causing drinking water taste and odor problems and filter clogging at the water treatment plant. City water treatment officials also frequently experience difficulties with maintaining an effective disinfection residual in the distribution system because it spans more than 30 kilometers in length. Regrowth of microorganisms in the distribution system often causes coliform bacteria counts to exceed standards. The implementation of a watershed protection and management program, and the installation of a new disinfection system, to purify drinking water and to reduce bacterial growth in the distribution system should improve drinking water quality for the city residents.