文档介绍：The variation rule of the rainwater quality
in simulation cellar of different materials
ZHANG Guo-zhen1, HE Chun-sheng1, MI Zong-ming1, LIU Ling-hua2
School of Environment Science and Municipal Engineering The Department of Water Environment
Lanzhou Jiaotong University China Institute of Water Resources and Hydropower
Lanzhou , PRC Research
e-mail :******@lzjtu. Beijing, PRC
Abstract—In order to choose a reasonable material and thus to mixed cellars so as to provide a scientific basis for choosing
improve the quality of storage rainwater through studying the effects the fittest water cellar material.
of different cellars materials on the self-purification of storage
rainwater, the research studied the law of storage rainwater change 2. EXPERIMENT
over time in simulation cellar of red clay, cement and mixed
materials respectively. The results showed that with the proceeding of A. Materials and devices in experimental test
water self-purification in water cellar, CODMn and the total numbers Materials are cement and red clay of Qingyang. Cement is
of bacteria increased first and then slowly lower and in line, the
(PO ) ordinary Portland cement (Yongdeng Qilianshan
change of DO was similar to oxygen sag curve; CODMn showed a
degradation rate proportional to the concentration-response Cement Co., Ltd.), Simulation cellar