农村水体,Rural water
1)Rural water农村水体
1.Research on the current station of rural water pollution in Sichuan and the corresponding countermeasures四川省农村水体污染现状及治理对策
英文短句/例句

1.Research on the current station of rural water pollution in Sichuan and the corresponding countermeasures四川省农村水体污染现状及治理对策
2.STUDIES ON THE CAUSE OF WATER CONTAMINATION IN RURAL AREAS OF HUBEI PROVINCE AND THE MANAGING METHOD湖北省农村水体污染成因及治理办法研究
3.An Examination of Income and Consumption Levels of Japanese Rural Areas in the Modern Time;近代日本农村收入水平和消费水平的总体考察
4.The Research of Management System Reform of Small Scaled Village Hydraulic Engineering in Changshu;常熟市农村小型水利工程管理体制改革研究
5.Rural Water Conservancy Modernized Index System and Prewarning Managing;农村水利现代化指标体系及其预警管理
6.Hegang City Safety of Drinking Water Projects Areas after Construction Management System;鹤岗市农村饮水安全工程建后管理体制改革
7.Comparative Study on Constitution and Health Level of Rural Residents in Jiangsu Province;江苏省农村居民体质健康水平的比较研究
8.Raise the level of China s rural sports consumption Proposals;提高我国农村体育消费水平的几点建议
9.Construction of Social Security System for Rural Emigrants from Reservoir Building Areas in China;中国水库农村移民社会保障体系的构建
10.Exploiting of Integrated Membrane Combined Purification Processes for Rural Area适于农村的一体化膜组合净水工艺的开发
11.Research and Exploration of External Incentives System for Rural Hydropower Stations Upgrading in Zhejiang Province农村水电站更新改造外部激励机制体系的研究
12.Significance of Water Conservancy Facilities to Rural Economic Growth水利设施在农村经济发展中的作用体现
13.Considerations about the Management System Reform of Rural Small Water Conservancy Works in Xinzhou City忻州市农村小型水利工程管理体制改革的思考
14.Biomimetic Medium Purifies Rural Micro-polluted Water Sources仿生生物载体改善农村微污染饮用水源
15.Tianshui Area Countryside Sports Population few Reasons and Research Countermeasure天水地区农村体育人口偏少的原因及研究对策
16.Some Discussion on Reform of Management System of Little Scale Hydraulic Engineering in Rural areas of Liuzhou柳州市农村小型水利工程管理体制改革探析
17.Study on the construction of water and soil conservation pattern in rural residential area of Hebei Province河北省农村居民点水土保持模式体系构建
18.Key Techniques and Ensuring System for Emergency Water Supply in Rural Regions农村应急供水保障体系及关键技术研究
相关短句/例句

rural sewage农村污水
1.Elementary analysis on the ecological treatment processes of rural sewage;农村污水生态处理工艺分析
2.In order to meet the technical requirements of smaller occupancy area,higher efficiency of nitrogen and phosphorus removal,easier maintenance and lower operation and construction cost in the treatment of rural sewage in the Taihu Lake valley,a full-scale experiment on use of the combined process of anaerobic/waterfall aeration contact oxidation/constructed wetland was carried out.为了使太湖地区农村污水处理达到占地面积小、除磷脱氮效率高、管理简单、运行和建设费用低的目标,采用厌氧/跌水充氧接触氧化/人工湿地组合工艺进行了工程规模的试验研究。
3.In order to meet the technical requirements of smaller occupancy area,higher efficiency of nitrogen and phosphorus removal,easier maintenance and lower operation and construction cost in the treatment of rural sewage in Lake Taihu valley,a full-scale experiment on the use of the combined process of anaerobic/waterfall aeration contact oxidation/ constructed wetland was carried out.为了满足太湖地区农村污水处理占地面积小、除磷脱氮效率高、管理简单、运行和建设费用低的要求,研发了厌氧-跌水充氧接触氧化-人工湿地的组合工艺,并进行了工程试验研究。
3)Rural hydropower农村水电
1.Ecological and environmental issues and countermeasures in rural hydropower development;农村水电开发中的生态和环境问题及其对策
2.Solutions to ecological and environmental issues in rural hydropower development;解决农村水电生态与环境问题的若干对策及措施
3.Developing rural hydropower for enhancing livelihood of people living in poor and remote areas;开发农村水电 改善偏远贫困地区无电人口民生状况
4)rural drinking water农村饮水
1.Analysis on general situation of rural drinking water safety;农村饮水安全基本现状分析
2.Rural drinking water work of Guilin city;桂林市农村饮水工作的思考
3.Countermeasure studies for accelerating rural drinking water safety project construction in Guangxi;加快广西农村饮水安全工程建设对策研究
5)rural water supply农村改水
6)rural water supply reform农村水改
延伸阅读

富营养化水体控制技术施阳(深圳市福田区环境技术研究所,深圳518026)张光明(清华大学深圳研究生院,北京518057)摘要:水体富营养化造成藻类过量繁殖是一个全球性的问题,我国许多湖泊水库污染严重,国内外科学家对此进行了大量的研究。文章综合报道了现有的富营养化水体控制工艺,尤其是新的超声波除藻杀藻技术。关键词:富营养化洗涤剂超声波1引言水资源是人类赖以生存的基本物质,随着人口增长和社会经济飞速发展,水的需要量急剧增加,而水资源污染也日益严重。我国自20世纪80年代以来,由于经济的急速发展和环境保护的相对滞后,许多湖泊、水库已进入富营养化,甚至严重富营养化状态,如滇池、太湖、西湖、东湖、南湖、玄武湖、渤海湾、莱州湾、九龙江、黄浦江等。2000年对我国18个主要湖泊的调查表明,其中14个已进入富营养化状态[1]。2水体富营养化的危害水华的出现使水味变得腥臭难闻,降低水体的透明度,增加浊度。水面被藻类遮盖,阳光难以进入,严重抑制了深层水体的光合作用,降低溶解氧。死亡藻类不断沉到底部,加快了底部氧的消耗,使表面以下的水体处于厌氧状态,造成好氧生物死亡。除散发臭味、破坏景观、破坏水生生态环境外,部分藻类还能分泌藻毒素,引起鸟类、牛、羊等动物中毒,可能有致突变作用,对人类也有很大的潜在危险[2]。富营养化对水体生态和人们生活造成很大影响,对于那些依靠富营养化水体为饮用水源的城市来说,情况尤为严重。水中的藻类会大大提高化学需氧量(COD)、生物需氧量(BOD)、悬浮固体(SS)等的浓度,增加水处理负担。藻类在过滤时会堵塞滤料,在氯化消毒时产生三卤甲烷(THMs)等有毒副产物。藻类代谢物如糖酸等在混凝过程中与混凝剂反应,降低处理效果,增加混凝剂用量,而生成的络合物又会导致管网腐蚀。藻毒素不能以常规方法去除[3]。因此,富营养化水体作饮用水源会严重影响水厂的工艺运行、腐蚀管网、恶化出水水质。3处理工艺3.1营养物质的控制3.1.1工农业废水控制改进施肥方式,减少农业废水中氮磷的含量,加强水土保护,是全世界的共识,也是保护环境、防止水体富营养化的最佳方案,我国在这方面也作了持续的努力。然而,由于种种原因,效果不佳,部分地区水土流失日益严重。工业废水的处理近年来取得相当成绩,使水体富营养化得到了有效控制。3.1.2洗涤剂禁磷生活污水中的磷25%来自含磷洗涤剂,许多国家均有禁止或限制使用含磷洗涤剂的政策,我国深圳市、太湖与滇池流域也采取了类似措施。然而,日本在禁磷前后对琵琶湖的监测表明,由于洗涤剂中的磷酸盐占水体总磷污染的比例较低,该政策并不能明显改变水中磷的含量。同时,洗涤剂中磷酸盐的替代品沸石会较大程度地增加污水处理厂污泥的体积,给污泥处理带来困难[4]。因此,人们对洗涤剂禁磷的环境效应有着很大的争论[5]。