Development of water renovation technology in Thailand

在泰国，由于生活和工业废水的流入，水环境变得不好，在本研究项目中，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。梅达认为：第一，大量生活污水排入城市湖泊、水库、河道，造成水污染;从卫生的角度来看，在这些水体中检测到大肠菌群，降低了水质。指出森林砍伐造成地表土壤流失的非点源污染是农业区面临的严重问题之一。其次，通过对食品废水处理设施的调查，认为微生物的固定化是废水处理获得澄清出水的必要条件，微生物食物链的应用， ...更多信息 通过对孔雀鱼和鲶鱼的产率调查，发现它们对污水处理中捕食者-捕食者相互作用引起的污泥减量有一定的作用。第三，芦苇香蒲人工湿地处理低浓度污水，由于芦苇香蒲的根系具有很强的脱氮潜力，而且这些植物常年生长，因此具有较高的脱氮效率和稳定性，在热带地区是非常有用的。根据蓝-在泰国作为饮用水资源的湖泊和水库中的绿色藻类及其毒素如微囊藻毒素，在任何水资源和微囊藻毒素中观察到微囊藻水华，本研究取得了一些有益的成果，但对水资源区的富营养化治理仍需进一步研究，介绍了污水处理厂及小型污水处理设施的维护和低能耗、低成本的改造技术。少

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