粉煤灰合成沸石应用于污水土地处理系统

Zeolite from Coal Fly Ash Apllied to Land Treatment for Wastewater

大庆地区土地资源丰富、居住分散,尤其是各采油队多数不在城区,污水排放点不集中且周围没有市政污水管网,适合采用土地处理系统处理污水。大庆地区的大部分电力来自于火力发电厂,每年产生大量的粉煤灰固体废弃物,其堆放对周围环境造成很大污染。研究将这些粉煤灰合成沸石,并将其用于污水土地处理系统,利用沸石较强的吸附能力和阳离子交换能力,可有效去除氨氮,提高了污水土地处理系统的抗负荷冲击能力,同时实现了以废治废的循环经济理念,对大庆地区的环境污染治理工作具有重大意义。

Land resources are rich in daqing, and live scattered, especially, most of the production crew is not in city. Discharge points not focused , and without municipal sewage pipe network aroUnd. So the land treatment is likely. Most of Daqing＇s electricity comes from coal-fired, and it will makes a lot of fly ash every year. Stacking of ash fly caused great pollution on the surrounding environment. Fly ash was synthesized zeolite in this research, and this zeolite applied to land treatment system. Using strong adsorption ability and cation exchange capacity of zeolite, it can remove ammonia nitrogen effectively, improve the resistance to load impact ability of sewage land treatment system, and realize the recycling thought of ＂treat waste with waste＂. It is great significance of environmental protection in Daqing.