[1]李圭白,杨海洋,仲琳,等.锰质滤膜活性对接触氧化除锰及除氨氮效能的影响[J].中国给水排水,2020,36(21):1-6.
LI Gui-bai,YANG Hai-yang,ZHONG Lin,et al.Effect of Manganese Oxides Film Activity on Removal Efficiencies of Manganese and Ammonia Nitrogen by Contact Oxidation[J].China Water & Wastewater,2020,36(21):1-6.
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LI Gui-bai,YANG Hai-yang,ZHONG Lin,et al.Effect of Manganese Oxides Film Activity on Removal Efficiencies of Manganese and Ammonia Nitrogen by Contact Oxidation[J].China Water & Wastewater,2020,36(21):1-6.
锰质滤膜活性对接触氧化除锰及除氨氮效能的影响
中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第36卷 期数: 2020年第21期 页码: 1-6 栏目: 出版日期: 2020-11-01
- Title:
- Effect of Manganese Oxides Film Activity on Removal Efficiencies of Manganese and Ammonia Nitrogen by Contact Oxidation
- Keywords:
- ferrous iron; manganese active oxides film; manganese; ammonia nitrogen; groundwater; iron and manganese oxidizing bacteria
摘要:- 采用3种不同浓度的二价铁污染成熟锰质活性滤膜，考察锰质滤膜活性对滤柱的长期除锰及除氨氮效能的影响。结果表明，增大二价铁浓度会影响锰质活性滤膜的催化氧化性能，导致出水锰浓度超标长达数月，但对氨氮的去除效能却无显著影响。活性滤膜恢复再生时间随着二价铁浓度的增大而延长，当进水二价铁浓度分别为5、10、20 mg/L时，滤柱的恢复再生时间分别为92、104和112 d。二价铁污染对铁锰氧化菌数量没有显著影响，在为期125 d的实验过程中，上层滤料表面铁锰氧化菌数量可达到105 CFU/cm3，并持续增长，但除锰效果却显著恶化，可见在成熟砂滤柱内，活性滤膜的催化氧化性能在除锰过程中起着主要作用，而生物催化氧化作用是次要的。
Abstract:- The water containing three different concentrations of ferrous iron was used to contaminate the mature manganese active oxides film, and the effect of manganese oxides film activity on removal efficiencies of manganese and ammonia nitrogen from groundwater during long-term operation was investigated. The increase of ferrous iron concentration could affect the catalytic oxidation activity of the manganese active oxides film, resulting in the manganese concentration in the effluent exceeding the standard for several months. However, it had no significant effect on ammonia nitrogen removal. The regeneration time of manganese active oxides film increased with the increase of ferrous iron concentration.When the ferrous iron concentration in the influent was 5 mg/L, 10 mg/L and 20 mg/L, the regeneration time was 92 d, 104 d and 112 d, respectively. The iron and manganese oxidizing bacteria were less affected by the high concentration of ferrous iron. During the 125 days operation period, the number of iron and manganese oxidizing bacteria on the surface of the upper filter material reached 105 CFU/cm3 and continued to increase.However, the removal efficiency of manganese deteriorated significantly. Therefore, catalytic oxidation of the manganese active oxides film played a major role in the process of manganese removal, while the contribution of biotic oxidation was minor.
相似文献/References:
[1]王盼新,郦歆飞,王昀鹏,等.二价铁活化过二硫酸盐对As(Ⅲ)的去除效能与机理[J].中国给水排水,2020,36(23):14.
WANG Pan-xin,LI Xin-fei,WANG Yun-peng,et al.Removal Efficiency and Mechanism of As(Ⅲ) by Ferrous Activated Peroxydisulfate[J].China Water & Wastewater,2020,36(21):14.
更新日期/Last Update: 2020-11-01
