城市污水处理及绿化回用的研究

以4个不同地点的城市污水为实验对象,在相同的条件下,先分别进行厌氧、好氧工艺处理,选取各自的最佳处理时间,然后再进行厌氧与好氧相结合的工艺处理,最后用处理后的出水对3种常见的绿化植物进行浇灌,分析绿化回用效果。结果表明:先采取4 h左右的厌氧预处理,再进行约20 h的好氧处理,能达到较好的处理效果,CODcr去除率在87%~98%。绿化回用效果分析发现,回用水无臭味产生,对环境无二次污染,有助于植物生长。

Study on the Treatment of Domestic Wastewater and its Virescence Reuse

This experiment is studying on the domestic wastewater considering four various sites as the resourceful objects.Under the same conditions,the anaerobic treatment and aerobic treatment are underway separately with their respective best time for treatments and best effects chosen.Then comes the combinations of anaerobic and aerobic treatment.Finally the effluent wastewater will be used to water the green plants of three common kinds so that the effects of its virescence reuse can be analyzed.The results of this experiments show: The better effects can be achieved by taking about 4?h pre-anaerobic treatment by 20?h aerobic treatment.The respective COD remove rate is 98%,95%,87% and 92%.The analysis on the effects of virescence reuse shows that the reuse water has no smell as well as no second pollution to the environment,but it can help the plants grow.