The Effect And Mechanism Of Cement-soil Using For Sewage Purification
Cement-soil samples were made from composite cement (25%), red clay (75%) and proper amount of ultra-pure water. The samples were used to treat sewage water in the experiment of anaerobic reaction and aerobic reaction respectively. The raw sewage was collected from the inflow path of a wastewater treatment plan and it mainly consisted of domestic sewage. Results showed that the effect of ion exchange and pollutants adsorption by cement-soil were weak and the purification effect was mainly depended on the biodegradation of microorganisms on the surface of cement-soil. From the result we can also see that the sewage water can be effectively treated by cement-soil when oxygen got abundantly supplied. Temperature heavily affected the efficiency of the sewage water treatment in aerobic reactions. Pollutants removal efficiencies under 30 ℃ temperature were much better than that under 10℃ temperature. It was concluded that the mechanism of sewage water purification by cement-soil samples were similar to that by porous eco-concrete. However, the cost of the former is lower than the latter. Moreover, cementsoil could be easily crushed to be cultivated soil and doesn’t need to worry about its durability after being abandoned. Cement-soil is thought to be more beneficial to environment protection than ordinary eco-concrete.
Jun-kang Lan Bao-jian Liu
College of Environmental Science and Engineering, Guilin University of Technology Jian-Gan Road 12, Guilin 541004, P.R.China
国际会议
成都
英文
1-4
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）