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Development of water renovation technology in Thailand

泰国水体修复技术的发展

基本信息

批准号：
09044198
负责人：
INAMORI Yuhei
金额：
$ 9.73万
依托单位：
National Institute for Environmental Studies
依托单位国家：
日本
项目类别：
Grant-in-Aid for international Scientific Research
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1998
项目状态：
已结题

项目摘要

In Thailand, water environment is getting wrong by infuent of domestic and industrial wastewater, In this research project, water renovation technology using bio-ecoengineering was developed for protection of water resources such as lakes and reservoirs. It was meda clear that described as follows.First, water pollution is in progress by large quantity of domestic wastewater flowing into lakes, reservoir and klong in urban area. and coliform bacteria was detected in such water bodies decreasing water quality from the view point of sanitary. It was made clear that non point source pollution, which is lost of surface soil with deforestation, is one of serious problems in agricultural area. And development of countermeasure against these problems is necessary as soon as possible.Secound, as results of survey of food wastewater treatment facility that fixation of microanimal was necessary for wastewater traetment to obtain clear effluent, application of food chain composed of microanimal, … More guppy and catfish to wastewater treatment was useful for sludge decrease caused by prey-predator interact ion from the investigation of yields of these organisms. Third, low strength wastewater treatment system using constructed wetland with reed and cattail was very useful in tropical area for its high nitrogen removal efficiency and stability because root of such aquatic plant have high nitrogen removal potential and these plant grew all through the year.Furthermore, as results of the survey of blue-green algae and its toxin such as microcystin in lakes and reservoirs utilized as drinking water resource in Thailand that bloom of Microcystis observed in nany water resources and microcystin, which was standardized as 1mug/L in WHO guidline for drinking water quality, was detected over lOOmug/L in muscle area near the taking water station for drinking water and countermeasures against eutrophication was very important in water resource area.As described above, very useful results were obtained in this research project, however, further investigation is necessary for development of effective water renovation technology, easilizalt ion of maintenance of lagoon and small scale wastewater treatment facility and renovation techno logy with low energy and low cost. Less

在泰国，由于生活和工业废水的流入，水环境正在恶化。在该研究项目中，开发了利用生物生态工程的水修复技术，以保护湖泊和水库等水资源。现明确如下：一是城市地区大量生活污水流入湖泊、水库、河道，水污染加剧。在这些水体中检测到大肠菌，从卫生角度来看，水质下降。明确指出，森林砍伐导致表层土壤流失的面源污染是农业领域面临的严重问题之一。因此，有必要尽快制定针对这些问题的对策。其次，根据食品废水处理设施的调查结果，通过对这些生物的产量进行调查，废水处理中必须固定微型动物才能获得清澈的废水，将由微型动物、孔雀鱼和鲶鱼组成的食物链应用于废水处理，有助于减少因捕食者与捕食者相互作用而引起的污泥。第三，利用芦苇和香蒲人工湿地的低强度废水处理系统在热带地区非常有用，因为这种水生植物的根具有很高的脱氮潜力，并且这些植物全年生长，因此其高脱氮效率和稳定性。此外，作为饮用水源的湖泊和水库中蓝绿藻及其毒素（如微囊藻毒素）的调查结果泰国在任何水资源中都观察到了微囊藻水华，在饮用水取水站附近的肌肉区域检测到微囊藻毒素（世界卫生组织饮用水质量准则中标准化为1mug/L）超过100mug/L，因此，针对水资源地区的富营养化对策非常重要。如上所述，该研究项目获得了非常有用的结果，但是，还需要进一步研究以开发有效的水修复技术，使泻湖和小型废水处理设施的维护变得容易，并采用低能耗、低成本的改造技术。较少的