摘要
通过在中山市歧江石歧区段选取对照断面、控制断面和自净断面并调查发现,流域内主要污染源有农田、养猪场、废品收购厂、木加工厂、钢材厂、石材厂、报废机油中心、居民区、精细化工日化厂和酱油厂。断面取样分析发现,该河段内pH呈中性,无明显变化。COD和NH3-N变化与周边污染源分布有明显的对应关系。
Three kinds of cross-sections, including check cross-section, control cross-section and self-purification cross-section, were selected and researched in Shiqi Section of Qijiang River, main pollution sources were found, such as farmland, hoggery, waste purehase factory, wood-working factory, steel products factory, quarrying factory, scrap machinery oil center, residential area, fine chemical plant and soy factory. Cross-seetions sampling analysis found that COD and NH3-N concentrations had a corresponding relationship with distribution of pollution sources around and pH value was neutral stably all the reach.
出处
《环境卫生工程》
2008年第4期10-12,共3页
Environmental Sanitation Engineering
关键词
岐江
污染源
水质
COD
氨氮
Qijiang River
pollution sources
water quality
chemical oxygen demand
ammonia nitrogen
