农村生活污水对河道水质的影响及生物治理研究

选择绍兴地区不同方位的4个乡镇(东浦镇、福全镇、马山镇、鉴湖镇)作为监测点,分析了农村生活污水对河道水质的影响.在采样点直接进行pH、透明度、ORP、TDS和溶解氧等测量,将采集的水样在实验室进行COD、BOD5、TN、TP、亚硝酸盐氮、硝酸盐氮、氨氮、正磷酸盐的含量测定.结果表明监测点的水体透明度为62～79cm,溶解氧1.325～3.150mg/L,TDS为112～219mg/kg,pH6.80～7.43,ORP为-0.67～15mV,硝酸盐氮为0.82～2.59mg/L,亚硝酸盐氮为0.82～2.59mg/L,氨氮为2.83～4.31mg/L,正磷酸盐为0.018～0.32mg/L,总氮为0.061～0.13mg/L,总磷为0.0225～0.0339mg/L,COD为0～63.1395mg/mL,BOD5为18.47～22.25mg/L.采用地衣芽孢杆菌(Bacillus licheniformis)和恶臭假单胞菌(Pseudomonas putida)1∶1混合的微生态制剂处理农村污染水体,持续15d,结果表明不同浓度的微生态制剂对污染水体均有治理效果,0.15g/L菌粉组去除效果最佳.

Effect of Rural Domestic Sewage on the River Water Quality and Microecologics Control

Analysing the effect of sewage on river water quality, and select the Shaoxing different orientation of the four villages and towns (Dongpu Town, Fuquan town, Mashan town, Jianhu town) as sampling point. The surface water quality objectives as standards value. The field measurement of PH, dissolved oxygen at the collection site, COD,BOD5,TN,TP,nitrite nitrogen,nitrate nitrogen,ammonia nitrogen and orthophosphate of water samples were analysed in the laboratory . The effect of microecologics controling the rural domestic sewage in shaoxing was examed. the typical Shaoxing rural sewage(Mashan town) divided into four groups as the control group, 0.05 g bacteria powder group, 0.15 g bacteria powder group, 0.5 g bacteria powder group. Each group set three parallel and needed to be determine the total nitrogen, nitrate nitrogen, the COD and BOD5 and other indicators. Then putting different amounts of microecologics, we determined the data every three days. The test lasted 15 days. The results showed that transparency of the river water range from 62 to 79cm . The dissolved oxygen range 1.325-3.15mg / L TDS ranges from 112-219ppm.PH range from 6.8-7.43. By analyzing the effect of different concentrations of microecologics on the polluted water, it could be found the best purification effect on the polluted water is 0.15 g bacteria powder group.