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一、前言 在我国的一些地区,地下水中含铁量高,必须进行除铁后才能作为生活饮用水或工业用水。按照我国饮水标准含铁量不得超过0.3mg/L。自1980年以来,国内的一些水厂开始应用VYREDOX法(地层除铁法)除铁,在高含铁量地区,用此法作为预处理,在含水层中除去一部分铁,其余部分的铁则在地面的常规处理厂中除去。 二、在含水层中除铁机制 在含水层中的除铁过程,主要是接触氧化过程。地下水曝气充氧后灌入含水层中,已沉积在含水层砂粒表面的氢氧化铁膜,吸附水中的
I. INTRODUCTION In some areas of China, groundwater contains high amounts of iron and must be iron-removed before it can be used as drinking water or industrial water. According to China’s drinking water standard iron content shall not exceed 0.3mg/L. Since 1980, some domestic water plants have begun to use the VYREDOX method (sedimentation in addition to iron) to remove iron. In areas with high iron content, this method is used as a pretreatment to remove some of the iron from the aquifer and the rest is iron. Removed from conventional processing plants on the ground. Second, in the aquifer iron removal mechanism In the aquifer in the iron removal process, the main contact oxidation process. After aerated and aerated groundwater is poured into the aquifer, the iron hydroxide film that has been deposited on the surface of the aquifer sand is adsorbed in water.