改性硅藻土处理城市污水技术的可行性研究

分析了改性硅藻土处理城市污水的技术原理。指出改性硅藻土相对于一般的铝盐、铁盐等污水处理剂，具有效果稳定、二次污染少、可回收利用空间大、价格低廉等优点。提出了该技术的常规和改进的工艺流程，从理论上说明该技术的可行性。结合生产性试验的研究结果表明，该技术对CODcr和BODs的去除效率可分别达到70％和73％左右，对SS和TP的去除率分别大于94％和92％，从而进一步验证了该技术的可行性。参照一般化学强化一级处理技术的经济费用，分析了该技术在经济上的可行性。

Feasibility Study on the Technique of Treating Municipal Sewage With Modified Diatomaceous Earth

Principle of the technique of treating municipal sewage with refined and modified diatomaceous earth was presented, and pointed out that the technique possessed stable effect, less second pollution and recoverable etc. and proposed the improvement of routine flow process of the technique. The result of a pilot experiment showed that the technique could achieve CODcr and BOD5 removal efficiences up to 70%, and 73% respectively, and SS more than 94%, TP more than 92%. Finally the economical feasibility of the technique was also analyzed.