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The study on comprehensive methods for estimaiton of new water treatment technology

水处理新技术综合评价方法研究

基本信息

批准号：
06303017
负责人：
OHGAKI Shin-ichiro
金额：
$ 5.5万
依托单位：
UNIVERSITY OF TOKYO
依托单位国家：
日本
项目类别：
Grant-in-Aid for Co-operative Research (A)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

项目摘要

New water treatment technology is expected to achieve the high rate removal and the effective removal of difficult treated pollutants by conventional treatment. In this research, some acknowledgment about new technology were gained as follows.From the experiment about UV treatment, it is cleared that the photoreactivation rate depend on the bacteria species and not on the intensity of visible light. The decomposition effect of organo-halogenides by medium and low pressure UV lamp can be compared by the germicidal UV intensity which is measured by bioindicator.About the inactivation by Ozone, the acknowledgment about the effective factor and rate constant was gained.From the research of hydroxyapatite type inorganic ion-exchangers, it is cleaned that the toxic pollutant in water can be removed selectively and hydroxyl ion produced by this ion exchanger has inactivation effect.From the research of activated carbon, the kinetics of adsorption and the factor which decides the rate of adsorption was studied and the optimum application area was suggested.From the research of membrane separation, the comprehensive study was done, and the optimum application was suggested and NF (nanofiltration) was also researched and the removal characteristic was evaluated.About bio-index, the natural water was estimated by bio-assay. The cytotoxicity and the relation between toxic and oxidation stress was studied also. The estimation methods of biological water pollution was studied comprehensively, and effective and important bio-index was also suggested.

新型水处理技术有望实现高去除率，有效去除常规处理难处理的污染物。在本研究中，对新技术的认识如下：从紫外线处理的实验中可以看出，光复活率取决于细菌种类，而不取决于可见光的强度。中低压紫外灯对有机卤化物的分解效果可以通过生物指示剂测得的杀菌紫外线强度来比较。对于臭氧的灭活作用，得到了有效因子和速率常数的认识。通过羟基磷灰石型无机离子交换剂的研究，可以选择性地去除水中的有毒污染物，并进行净化。该离子交换剂产生的氢氧根离子具有失活作用。从活性炭的研究出发，研究了吸附动力学和决定吸附速率的因素，并提出了最佳应用领域。从膜分离的研究出发，进行了综合研究，提出了最佳应用，并对NF（纳滤）进行了研究，并提出了去除特性。评价。关于生物指标，天然水是通过生物测定来评价的。还研究了细胞毒性以及毒性与氧化应激之间的关系。全面研究了水体生物污染的评价方法，提出了有效且重要的生物指标。