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

新的水处理技术有望实现常规处理对难处理污染物的高效去除和有效去除。通过对紫外光处理的实验研究，明确了光复活率与细菌种类有关，而与可见光的强度无关。中低压紫外灯对有机卤化物的降解效果可以通过生物指示剂测定的杀菌紫外光强度进行比较。对于臭氧灭活，得到了对影响因素和速率常数的认识。通过对羟基磷灰石型无机离子交换剂的研究，明确了水中有毒污染物的选择性去除和该离子交换剂产生的羟基离子具有钝化作用。从对活性碳的研究，对吸附动力学和影响吸附速率的因素进行了研究，提出了最佳应用范围。从膜分离的研究出发，对膜分离进行了全面的研究。提出了最佳应用方案，并对纳滤法进行了研究，评价了纳滤法的去除性能。研究了细胞毒性及毒性与氧化应激之间的关系。对生物水污染的估算方法进行了全面的研究，提出了有效的、重要的生物指标。

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.