Advanced biological water treatment for water supply

极低浓度的可溶性物质必须从水中去除以供供应。生物疗法被认为是相当有效的。然而，首席调查员发现这些方法相当不稳定。他还提出了一种用pH和（Mg/Ca）比自动控制装置处理的新方法。经过140天的植物实验，他成功地验证了他的建议，蜂窝过滤器，砾石过滤器，活性炭过滤器和臭氧-活性炭过滤器的所有实验都显示出优异的去除率。

Very low concentration of soluble sabstances must be removed from water for the supply. Biologocal treatments have been believed that they are rather effective. However, the head Investigater has found that the methods are rather unstable. He also has proposed a new method for the treatment with automatic control devices of pH and (Mg/Ca) ratio. From plant-scale experiments for 140 days, he has succeeded to verify his proposal, showing excellent removal ratios in all experiments of so called Honeycomb, Gravel Filter, Actvated Carbon Filter and Ozon-Activated Carbon Filter.