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西德Delmenhorst市Annenheide水厂地下水源中有大量的铁细菌,用生物法除铁除锰。该水源地下水缓冲强度小,无氧,含铁量3.75～9毫克/升Fe(Ⅱ),锰≤0.2毫克/升,游离二氧化碳≤50毫克/升,碳酸盐硬度约为3度(德国度),用高锰酸钾法求得的有机物量为13～15毫克/升,氨氮≤0.3毫克/升,并有硫化氢。此水经曝气(有些原水要加氯)和二级压力(密闭)过滤后能很好地除铁除锰,一级双层滤料滤池除铁,二级滤池除锰。在上述含铁量的滤速约为10米/时。
There are a large number of iron bacteria in the underground water source of the Annenheide water plant in Delmenhorst, West Germany, and the iron and manganese are removed biologically. The water source groundwater buffer strength is small, no oxygen, iron content 3.75 ~ 9 mg / L Fe (II), manganese ≤ 0.2 mg / liter, free carbon dioxide ≤ 50 mg / liter, carbonate hardness is about 3 degrees (German degree The amount of organic matter obtained by the potassium permanganate method was 13 to 15 mg/l, ammonia nitrogen was 0.3 mg/l, and hydrogen sulfide was present. This water is aerated (some raw water to be chlorinated) and secondary pressure (closed) after filtration can be very good in addition to iron and manganese, a dual-layer filter filter iron, secondary filter manganese removal. The speed of the above-mentioned iron content is about 10 meters/hour.