摘要
目前在火电厂环境影响评价中 ,主要利用类比法和实验法确定灰水中氟化物的浓度。文章提出了一种新的方法———计算法。该方法以氟的迁移转化规律为基础 ,以物料平衡原理为依据 ,充分考虑煤源、煤质、除尘方式、除灰方式、排灰方式及冲灰水水质等影响因素。与类比法和实验法相比 ,该法简便、可靠、实用、经济。鉴于阜阳灰场地区包气带地层很薄、渗透系数较大 ,在上述计算的基础上 ,利用水质模型的近似解法 ,重点预测灰水对灰场附近地区地下水饮用水源污染的可能性 ,影响程度及发生时间。
A calculation method was proposed for determination of fluoride concentration in ash water. The method was based on the full consideration of impact factors on fluoride concentration including coal source, coal composition, dust removal technique, ash removal procedure, ash discharge way, and scouring ash water quality etc. The migration and transformation of fluoride were taken into consideration. Compared with analogy method or experiment method, calculation method is more simple, credible, operational, and economic. A method was also developed for prediction of the impacts of the ash-water on groundwater quality as drinking water sources, especially in the areas with very thin vadose and high permeation coefficient.
出处
《城市环境与城市生态》
CAS
CSSCI
CSCD
2000年第3期50-53,共4页
Urban Environment & Urban Ecology
基金
国家自然科学基金资助项目 !(3 9970 12 1)
