【摘要】：以模擬生活污水為研究對象,構(gòu)建兩組基質(zhì)分別為礫石、木塊、爐渣和礫石、爐渣、木塊配置方式的水平折流潛流人工濕地(HBSFs),探討不同回流比(0%、50%和150%)對兩組人工濕地系統(tǒng)(HB1和HB2)脫氮除磷的影響。研究結(jié)果表明,當水力停留時間為2 d時,出水回流對水中氨氮和總氮的去除率提高效果顯著,當回流比為150%時,氨氮平均去除率可達約60%,高于不回流時的氨氮去除率(45%),總氮的平均去除率(64%)也高于不回流時總氮的去除率(53%);同時,出水回流在一定程度抑制硝態(tài)氮的去除,對總磷的去除效果略有提高,但不明顯;硝氮去除率從不回流時的95.4%~96.6%降至回流時的72.7%~87.2%�？梢�,與不回流相比,回流條件下對水中氨氮、總氮和總磷的去除效果都有所提高。
[Abstract]:Taking simulated domestic sewage as the research object, two groups of horizontal baffle subsurface flow constructed wetland (HBSFs), with gravel, wood block, slag and gravel, slag and wood block were constructed to investigate the effects of different reflux ratios (0%, 50% and 150%) on nitrogen and phosphorus removal in two groups of constructed wetland systems (HB1 and HB2). The results show that when the HRT is 2 days, the removal rate of ammonia nitrogen and total nitrogen in water is significantly increased by effluent reflux. When the reflux ratio is 150%, the average removal rate of ammonia nitrogen can reach about 60%, which is higher than that without reflux (45%), and the average removal rate of total nitrogen (64%) is also higher than that without reflux (53%). At the same time, the effluent reflux inhibited the removal of nitrate nitrogen to a certain extent, and the removal effect of total phosphorus was slightly improved, but not obvious, and the removal rate of nitrate and nitrogen decreased from 95.4% 鈮，

本文編號：2501808