用于水污染治理的生态混凝土技术

Technology of Using Eco-concrete for Sewage Treatment

关键词:  生态混凝土 污水净化 富营养化

Key words:  eco concrete,sewage purification,eutrophication

摘要:

介绍了在混凝土中综合物理、化学、物理化学以及生化作用，多层次多反复地降解和消除污染物质的生态混凝土污水处理方法，这一方法采用侧滤，首先对污水进行预处理，去除固体悬浮物质后，再经过推流式生态混凝土水处理装置，达到污水净化的目的。另外，通过在生态混凝土中掺加缓释性净水材料，提高了生态混凝土的净水效果和耐久性，在实验室研究的基础上，进行了严重污染河道污水的就地净化现场试验，结果表明，COD，BOD去除率过50%，TP去除率超过70%，TN去除率达到20%，此项技术不仅开拓了混凝土材料的使用范围，也为解决水污染问题提供了一种投资少、效果好，运转费用低的好方法。

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.