Water purification in rural area using self-purification function

实地研究已经解决了以下两个问题，与农村地区的自我净化功能有关。对波尔德兰帕迪场自我净化功能的定量评估。（1）在主排水管的排水管中，从填充场中排出填充物的污染者，在一段时间内，然后在大雨的排水中冲洗出来。（2）即使在主排水管和水净化池中，生物治疗的影响也是不可能预期的，即使保留时间足够长，而刺激的影响只出现在8号上。24小时的退休时间。（3）作为水净化池使用L-Q equation计算的污染负荷减少效应的结果，估计50%的污染负荷可以在污染期间减少所有水质量项目的50%，也是20。COD和T-N的30%和T-P的60%也可以在非触发期减少。对农村酿酒厂治疗水资源的再利用的影响已被运送到Iyo市农村酿酒厂， Ehime。它展示了氮氧化物浓度减少的情况，因此COD、TN浓度的任何上升情况，并证明了Paddy场的净化功能。这意味着，重新利用农村采矿业的处理水是一种有效的衡量方法，它利用了农场的自我净化功能。

Field studies were carried out on the following two problems, which related to the self-purification function of rural area.1. The quantitative evaluation of self-purification function of paddy field in polder land.(1) The pollutant which discharged from paddy field in the puddling stage sediments in the main drainage canal for a time, and then flush out by the drainage of heavy rain.(2) The effect of biological treatment could not be expected in the main drainage canals and water purification pond even if its retention time is long enough, and the effect of sedimentation is obtained only for 8。ォ24 hours of retantion time.(3) As a result of calculating pollution load reduction effect by the water purification pond using L-Q equation, it was estimated that the 50% of pollution load could be reduced on all water quality items for irrigation period, and also 20。ォ30% of COD, T-N and 60% of T-P could be also reduced in non-irrigation period.2. The effects of reuse of treated water of rural sewerageSurvey was carried out in the rural sewerage treatment plant in Iyo City, Ehime Prefecture. It was shown that the NOx-N concentration was reduced, though there were any rise at the COD, T-N concentration, and it demonstrates the purification function of paddy field. It means that the reuse of treated water of rural sewerage is effective measures as water purification method which utilized the self-purification function of the farmland.