GAC-石英砂滤池处理微污染水生产研究

以生产试验GAC-石英砂滤池为对象,研究其对微污染水中有机物和氨氮的去除效果。结果表明:GAC-石英砂滤池对浊度的平均去除率为86.04%,与普通砂滤池相比无明显差别;对CODMn和氨氮的平均去除率分别为20.95%和60.52%,处理效果显著;滤后水溶解氧减少21.40%,而pH值从7.6下降到7.1,说明较高的溶解氧含量和pH值偏碱性有利于CODMn和氨氮的去除。同时建议减少前加氯量,增加石灰投加量,增设曝气系统可提高GAC-石英砂滤池对有机物和氨氮的去除效果。

Treatment of micro-polluted water by GAC-sand filter

With GAC-sand filter as the experimental object, the effect of it on organic compounds and ammonia nitrogen removal from micro-polluted water was studied. The results of the test showed that: the average removal rate of turbidity by GAC-sand filter was 86.04%, compared with common sand filter, there was no obvious difference; however, the average removal rate of CODMn and ammonia nitrogen by it were 20.95% and 60.52% respectively, the treatment effect was prominent. After the filtration, the dissolved oxygen concentration decreased 21.40%, the pH value decreased from 7.6 to 7.1, which indicated that higer dissolved oxygen concentration and partial alkaline were beneficial to CODMn and ammonia nitrogen removal. It was proposed that, the removal rates of organic compounds and ammonia nitrogen by GAC-sand filter could be improved through decreasing front chlorin dosage, increasing lime dosage and adding aeration system.