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.
出处
《桂林理工大学学报》
CAS
北大核心
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)
关键词
水泥土
净化
污水
cement-soil
treatment
sewage water
