多孔水泥土净化生活污水试验  

Experiment on Sewage Water Treatment by Cement-Soil

作　　者：蓝俊康[1] 刘宝剑[2] 

机构地区：[1]桂林理工大学广西环境工程与保护评价重点实验室,广西桂林541004 [2]桂林理工大学环境科学与工程学院,广西桂林541004

出　　处：《桂林理工大学学报》2011年第2期233-237,共5页Journal of Guilin University of Technology

基　　金：广西环境工程与保护评价重点实验室研究基金项目(桂科能0701K009)

摘　　要：用复合水泥(wB=25%)、红粘土(wB=75%)和适量的蒸馏水拌合后置入PVC管内,经插孔和养护,制成多孔的圆柱形水泥土反应节,再由多个反应节上下串联而成反应柱,以此反应装置处理从某污水处理厂采集的污水,该污水组分以生活污水为主。监测结果显示,此反应器对污水中BOD5、COD的净化效果十分突出,对TP、TN、NH3-N的处理也有一定的效果;30℃条件下各个指标的去除率要明显优于10℃的环境。综合分析后认为,水泥土对污水的净化机理与"生态型多孔混凝土"的基本相同,但是由于水泥土的制作成本更低,废弃后可破碎作耕土,不需考虑其耐久性问题,更利于环保。Composite cement （ωB = 25% ）, red clay （ ωB = 75% ） and proper amount of ultra-pure water are mixed together and put into a PVC pipe. After pricking and conservation, short porous cylinders of cement-soil are made. Several cement-soil cylinders appear in a row up and down to form a reaction column and to treat sewage water. The raw sewage is collected from the inflow path of a wastewater treatment plan and mainly consisted of domestic sewage. The experiment monitoring data show that the sewage water can be effectively treated by the cement-soil reaction column. The removal of BOD5 and COD is high and the removal efficiency of TP, TN 、 NH3-N also significant. The treatment effect under 30 ℃ temperature is better than that under 10℃ temperature. It is concluded that the mechanism of wastewater purified by cement-soil cylinder is very similar to that of the porous eco-concrete. However, the cost of the former is more lower than the latter. Because it can be easily crushed into cultivated soil, there is no worry about its durability after abandoned. Cement-soil is thouzht to be beneficial to environment protection than other ordinary eco-concrete.

关 键 词：水泥土 净化 污水 

分 类 号：X52[环境科学与工程—环境工程] X703