Field Study on Dephosphorization for Rural Sewage Treatment

农村污水处理除磷现场研究

基本信息

批准号：
62460205
负责人：
TAKAHASHI Tsuyoshi
金额：
$ 0.32万
依托单位：
Kyoto University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1987
资助国家：
日本
起止时间：
1987 至 1988
项目状态：
已结题

项目摘要

In order to develop the new treatment method of phosphorous using submerged iron filter, adaptable to the small-scale sewage treatment plants such as those of rural community, field expeiments were carried out in three practical treatment plants of different systems.1.Application to contact aeration method at Hirayama districtIn the first experiments, 1160 pieces of iron filter were submerged in the contact aeration tank. Iron ion was desolved from the iron filter with bacteria corrosion according to the growth of biological menbrane, and then the stable dephosphorization was achieved.In the second, in which 2400 pieces of iron filter were submerged in anaerobic tank, phosphorous removal rate was gradually decreased by the blockage of biological menbrane.2. Application to rotary disc method at Hanami districtIn this plant, 60 sheets of plastic discs were replaced by the iron discs. Although the phosphorous concentration of treated water in plastic discs was 4.1 mg/1 in average, that of iron discs was 2.2 mg/1 in average, and the average removal rate was 53% during 1.5 years after replacing iron discs.3. Application to intermittent aeration method at jyouanji districtThe phosphorous concentration of treated water from the tank without iron filter was remarkably fluctuated month by month. But those from the tank with submerged iron filter were almost always less than 1 mg/1. The average removal rate was between 60 and 80% in the period of experiment. Submerged iron filter did not show any detrimental influences on high rate removal of BOD, COD and that of nitrogen.

为了开发使用浸没铁过滤器的磷磷的新治疗方法，适应小规模的污水处理厂（例如农村社区的污水处理厂），在不同系统的三个实用治疗厂中进行了现场曝光。1。申请在Hirayama districtin的接触式曝气方法中，第一个实验，第一个实验，1160 Iron Iron Filter exmerations in the接触式充气量。根据生物构造的生长，将铁离子用细菌腐蚀从铁过滤器中倒下，然后实现了稳定的去磷化作用。第二，在第二个，在厌氧罐中浸没了2400块铁滤波器，磷酸化的去除率逐渐被生物乳腺癌的阻塞逐渐降低。2。在Hanami区的旋转盘方法中应用该植物，由铁盘取代了60张塑料盘。尽管塑料盘中处理过的水的磷浓度平均为4.1 mg/1，但在替换铁盘后1。5年中，铁盘的平均水平为2.2 mg/1，平均去除率为53％。3。在Jyouanji地区间歇性曝气法的应用，未经铁过滤器的储罐中处理的水的磷浓度大大波动。但是那些从淹没铁过滤器的水箱中的人几乎总是小于1 mg/1。实验期间，平均去除率在60％至80％之间。淹没的铁过滤器对BOD，COD和氮的高率去除率没有任何不利影响。