| 不同草坪覆盖地下渗滤系统处理生活污水研究 |
| 摘要点击 1163 全文点击 1218 投稿时间：2010-01-19 修订日期：2010-03-31 |
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| 中文关键词 地下渗滤系统 草坪草 生活污水 化学需氧量 总氮 总磷 |
| 英文关键词 subsurface wastewater infiltration system turfgrass domestic sewage COD TN TP |
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| 中文摘要 |
| 采用高羊茅和结缕草2种不同草坪草覆盖的地下渗滤系统对生活污水进行处理.结果表明，不同处理对COD均有较好的去除效果，COD浓度从97～357 mg·L-1降至48 mg·L-1以下，达到我国污水处理二级排放标准，不同处理间差异不显著；不同处理对氨氮的去除从76.3～125.8 mg·L-1降至0.5 mg·L-1以下，均达到地下水Ⅳ类(≤0.5 mg·L-1)标准，裸地处理氨氮出水浓度显著大于高羊茅处理，与结缕草处理差异不显著；不同处理对TP的去除从3.70～18.42 mg·L-1降至0.05 mg·L-1以下，均达到地表水Ⅱ类(≤0.1 mg·L-1)标准，各处理间差异不显著；不同处理TN和硝氮去除效果均不好，达到地下水Ⅲ类（≤20 mg·L-1）标准的概率不到1/3，裸地处理的出水TN、硝氮浓度显著高于高羊茅和结缕草处理. |
| 英文摘要 |
| Domestic sewage was treated with subsurface wastewater infiltration system covered by two different turfgrass,namely,Festuca arundinaceaSchres. and Zoysia japonica Steud.. The result shows that all the different systems have good removal rates to COD. The concentration of COD decreased to less than 48 mg·L-1 from 97-357 mg·L-1 which achieve the second class criteria specified in Integrated Wastewater Discharge Standard,and there are no prominent difference among different systems. The concentration of NH+4-N decreased to less than 0.5 mg·L-1 from 76.3-125.8 mg·L-1 which achieve the Ⅳ criteria(≤0.5 mg·L-1) specified in Groundwater Quality Standard, the effluent concentration of NH+4-N in naked system are prominently higher than that in system covered by Festuca arundinaceaSchres.,and there are no prominent difference compared with system covered by Zoysia japonica Steud.. The concentration of TP in different systems decreased to less than 0.05 mg·L-1 from 3.70-18.42 mg·L-1 which achieve the Ⅱ criteria(≤0.1 mg·L-1) specified in Surfacewater Quality Standard,and there are no prominent difference among different systems. The removal rates of TN and nitrate were all not good enough,the probability which achieve the Ⅲ criteria（≤20 mg·L-1）specified in Groundwater Quality Standard are less than one third,and the effluent concentration of TN and nitrate in naked system are prominently higher than that in systems covered by Festuca arundinaceaSchres. and Zoysia japonica Steud.. |
