| 污水的光化学灭菌处理研究 |
| 摘要点击 2029 全文点击 2181 投稿时间：1996-07-19 |
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| 中文关键词 光化学 光敏化剂 紫外辐射 灭菌 |
| 英文关键词 photochemistry photosinsitization UV irradiation disinfection |
| DOI 10.13227/j.hjkx.19970115 |
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| 中文摘要 |
| 以日光和中压汞灯为光源,以亚甲基兰(下简称MB)为光敏剂,研究了南京市某污水样的灭菌处理和从灭菌水样中除去MB的方法。结果表明:光源、光强、光照时间、MB用量和溶解氧等因素对灭菌有显着影响;不加MB的水样经紫外光(下简称UV)灭菌后,在日光下细菌呈现复活(下简称光复活);当1L细菌总数为3.1×106个/ml的污水加入2mgMB,并在充气状态下以300W中压汞灯光照4min,其灭菌率达100%,且无光复活;同样条件下日光的灭菌率则低很多;水样中残余的MB用膨润土可有效除去。 |
| 英文摘要 |
| A new method of photochemical disinfection for wastewater from Nanjng city was investigated. By ae rating and using methylene blue(MB)as photosinsitizer,the wastewater samples were disinfected under sunlight and a medium pressure mercury lamp separately. The results were as follows:(1)The disinfection of wastewater were remarkably affected by the light sources,light intensity,irradiaded time,MB concentration and dissolved oxygen;(2)The bacteria which were disinfected by UV could be partially photoreactivated under sunlight;(3)The disinfection rate could reach 100% and the bacteria photoreactivation were not appeared when l liter of the sample containing 3.1×106 bacteria and 2 mg MB were irradiaded by a 300W medium pressure mercury lamp for 4 min;(4)The residual MB in the samples could be removed by bentonite clay. The disinfection mechanisms of UV and photosensitization,the bacteria photoreactivetion and the effects for affecting disinfection were discussed. |
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