Development of Water Disinfection Systems for Seed Production Facilities

种子生产设施水消毒系统的开发

• 批准号: 09556041
• 负责人: YOSHIMIZU Mamoru
• 金额: $ 4.35万
• 依托单位: HOKKAIDO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B).
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-09556041/
• 关键词: seed production; water for aquaculture; waste water; disinfection; ultraviolet-light irradiation; ozonization; electric decomposition; 電解水; 塩素; オキシダント

Water supplies often provide an efficient means for the introduction and spread of infectious desease. Pathogen-free water sources are often essential for success in aquaculture. The surface waters commonly used in aquaculture come from coastal waters or rivers and may contain the fish pathogens. Such open water supplies should be used prior treatment to kill the fish pathogens. Disinfection of wastewater before discharging is better for the environment.Usually, the treatment systems make use of high efficiency sand filters to clarify the water before treatment with ultraviolet(UV)light or ozonation. Fish pathogens are divided into 2 groups based on their sensitivity to UV and TROs. Sensitive viruses include infectious hematopoietic necrosis virus(IHNV), Oncorhynchus masou virus(OMV), lymphocystis virus(LCDV)and Japanese flounder rhabdovirus(HIRRV), and Gram-negative bacteria. These microorganisms are inactivated or killed by treatment with 10^4μW・sec/cm^2(UV dose)or 0.1mg/L(TROs)for 1 … More min. Resistant viruses include infectious pancreatic necrosis virus(IPNV), marine birnavirus, reovirus and fish nodavirus, Gram-positive bacteria, fungi and parasite which are inactivated with a dose of 106μ W・sec/m^2 or 0.5mg/L(TROs)for 1min. Ozonated seawater containing TROs is toxic to fixh, thus it should be removed by charcoal before using.Bactericidal and virucidal effects of hypochlorite produced by Electrolysis of seawater(salt water)are examined. More than 99.99% cells of V.anguillarum and A.salmonicida were killed when the bacteria were exposed to 0.1 mg/L hypochlorite for 1 min. Yellowtail ascites virus(YAV)and hirame rhabdovirus(HIRRV)were inactivated>99099% after treatment with 0.58 mg/L hypochlorite for 1 min. Using for wastewater, more than 99% of viable bacteria in waste-seawater was reduced treated with 0.5mg/L of total residual chlorite for 1min. The bactericidal effects of electrolysis were almost same as that of ultraviolet irradiation(1.0×10^5μW・sec/cm^2)or ozonization(TROs 0.5mg/L, 1min)of seawater. This method is easy to treat large volume of water, so it suits to disinfection of wastewater. Less

水的供应常常为传染病的传入和传播提供了有效的途径。无病原体的水源往往是水产养殖成功的关键。水产养殖中常用的表层沃茨来自沿海沃茨或河流，可能含有鱼类病原体。这种开放式水源应在处理前使用，以杀死鱼类病原体。污水排放前先消毒，对环境更有好处。处理系统通常采用高效率的砂滤器，在紫外线或臭氧化处理前，先将水澄清。鱼类病原体根据其对UV和TRO的敏感性分为2类。敏感病毒包括传染性造血细胞坏死病毒（IHNV）、虹鳟病毒（OMV）、淋巴囊肿病毒（LCDV）和日本比目鱼弹状病毒（HIRRV）以及革兰氏阴性菌。用104 μW·sec/cm ~ 2（紫外线剂量）或0.1mg/L（TRO）处理1 ...更多信息 耐药病毒包括传染性胰腺坏死病毒（IPNV）、海洋双RNA病毒、呼肠孤病毒和鱼类野田病毒、革兰氏阳性菌、真菌和寄生虫，其灭活剂量为106μ W·sec/m^2或0.5mg/L（TRO），灭活时间为1 min。含TRO的臭氧化海水对定影液有毒性，使用前应先用活性炭去除。研究了电解海水（盐水）产生的次氯酸盐的杀菌和杀病毒效果。0.1mg/L次氯酸盐作用1 min，对鳗弧菌和杀鲑钩虫的杀灭率均在99.99%以上，0.58mg/L次氯酸盐作用1 min，对黄尾腹水病毒（YAV）和Hirame弹状病毒（HIRRV）的灭活率均在990.99%以上。用0.5mg/L的总残留菌处理1 min，可使废海水中的活菌减少99%以上。电解杀菌效果与紫外线（1.0×10^5μW·sec/cm ^2）或臭氧（TRO_s 0.5mg/L，1 min）杀菌效果相当。该方法处理水量大，适用于废水的消毒。少

项目成果

M.Yoshimizu: "Disinfection method of water for aquaculture by ozonization. (in Japanese)."Nippon Suisan Gakkaishi. 65(1). 1110 (1999)

M.Yoshimizu：“水产养殖用水的臭氧化消毒方法。（日语）。”日本水产学会。

吉水 守: "異体類のウィルス病対策"韓国魚病学会要録. 7-14 (1998)

Mamoru Yoshimizu：“针对外来病毒病的对策”韩国鱼病学会通报7-14（1998）。

吉水 守: "飼育用水のオゾン殺菌法"日本水産学会誌. 65(6). 1110 (1999)

Mamoru Yoshimizu：“饲养水的臭氧消毒方法”日本水产学会杂志65（6）（1999）。

吉水 守: "魚類病原微生物の紫外線およびオゾン感受性" 種苗期疾病対策. 11. 1-16 (1998)

Mamoru Yoshimizu：“鱼类病原微生物对紫外线和臭氧的敏感性”苗期疾病控制。11. 1-16 (1998)。

吉水: "オゾンによる養魚用水の殺菌(下)"養殖. 34. 126-128 (1997)

Yoshimizu：“使用臭氧对养鱼水进行消毒（第 2 部分）”水产养殖。 34. 126-128 (1997)