Technology of Using Eco-concrete for Sewage Treatment

CHEN Zhi-shan

doi:10.3969/j.issn.1007-9629.2001.01.012

Abstract：A method for sewage treatment using Eco-concrete was presented. In this method, the pollutants in wastewater degraded and eliminated in multi-layers repeatedly by means of synthetic action occurring on the eco-concrete which include physical, chemical, physicochemical and biochemical actions. The sewage purification was carried out through two step. At first, the sewage was pre-treated using side filtration technology in order to remove suspended solids. Second, sewage flowed through a disposal device with the style of drag flow which was composed of eco-concrete. Also, the special purifying function material with the style of slow release was added into eco-concrete, which can promote the purification effectiveness and durability of eco-concrete. On the base of studying in laboratory, the in site sewage purification test was made at a serious pollution river. The results show that the decrease ratio of COD, BOD, TP and TN may reach respectively 50%,50%,70%,and 20%. This technology may not only expand the application range of concrete, but also provide a good way for sewage disposal with the advantages of low investment expenses, good effect and low operation cost.