Treatment By Plants And Microorganisms To Nansha River’s Sewage And Small Ecological Marsh Experiments

Nansha River derives from a small tributary of Fen River and it is located in the downtown area of Taiyuan through 9 main roads in terms of the Jianshe Road and Jianshe South Road and other nine transportation corridors, flow into the Fen River from east to west. Results from Nansha River location in the downtown area in center of city, the contamination is particularly prominent. Most of them came from sewage pollution component of living emissions by urban residents. City Taiyuan’s Environmental Protect Department began to develop and implement numerous specific environmental management and environmental protective work in order to change the current condition of environmental pollution casted by Nansha River. This paper is derived from environmental science and technology research project set up by the Environmental Protection Agency,and aimed to study sewage treatment in Nansha River.In initial phase, this paper studied the pollution status casted by Nansha River,while measuring each pollution component in Nansha River, a general understanding of the situation of Nansha River was claimed.While the number of microbiological studies in this river, the evaluation of self-purification capacity of waterbodies by bacterium number. The results showed that:TN content was 21.3322mg/L; TP content was 6.1298mg/L; COD content was 210.1mg/L; NH3-N content was 13.2129mg/L in Nansha River, pollution composition of these rivers are deadly overweight. The number of kinds of bacterias in water is 90.2 x 103cfu/L. These microorganisms layed the foundation of self-healing ability of Nansha River.Secondly this paper used microorganisms, plants and microbes alone synergistic which are approaching to the plant from the Nansha River sewage. Comparisons among the three treatment methods for sewage contamination of each component degradation scavenging effect, lead to choosing the best approach as a theoretical basis for subsequent experiments of small wetlands. Experiments compared the effect of the respective first processing time among three different treatment methods, selection for multiple comparisons took approach. The results showed that:When dealing with TN, TP, COD, NH3-N, synergistic approach to sewage treatment plant micro-organisms and the effect of individual microbial treatment alone was more obvious than plants, and the difference was significant (P<0.05). Then use the plant bacteria on each sewage treatment 4,8,12,16d, the treatment effect was measured for multiple comparisons. The results showed that:In addition there was no difference in treatment effect between TP 12d and 16d, the rest showed significant differences (P<0.01), and with the processing time showing a decreasing trend, indicating that co-processing plant microbial groups each sample TN, TP, COD, NH3-N concentration increased with decreasing processing time.Finally, conducted wetlands planting experiments in the Nansha River planting, by planting cannas and Polygonum in the Nansha River wetland, then pour water continuously, measured decontamination effect of wetlands. The results show:TN, TP, COD, NH3-N concentration in Nansha River sewage plant after planting, respectively from 19.9835mg/L,5.9228mg/L, 194.7mg/L,12.8568mg/L reduced to 5.6089mg/L,1.5164mg/L,72.7mg/L, 1.7386mg/L; efficiency respectively 71.93%,74.40%,62.66%,86.48%. This suggests that the experimental wetlands Nansha River without water TN, TP, COD, NH3-N have a very good effect of removing. On the basis of small wetlands analysis the role of the urban environment in general after the Nansha River wetlands built.