光合细菌和水浮莲在河南农村猪场污水中的应用

Application of Pistia statiotes and Rhodospirillum sp. to the Treatment of Wastewater From a Rural Swine Farm in Xinyang of Henan Province

利用在信阳农村养猪场中的2个3.3 m深的污水氧化塘进行光合细菌和水浮莲净化污水的研究。1#氧化塘加入8×10^8mL^-1光合细菌50 L,2#氧化塘加入水浮莲（100株.m^-2）。为期1 a的试验结果表明：经光合细菌和水浮莲的共同作用,总磷下降了41.8%-76.0%,总氮下降了61.8%-81.0%,COD下降了66.8%-79.1%,BOD5下降了64.8%-82.3%。显示光合细菌和水浮莲能够明显改善养猪场污水水质。

Effects of Pistia statiotes and RhodospiriUum sp. were studied on treating wastewater from rural swine farms in two ponds （area： 398 m^2 ; depth： 3.3 m） in Xinyang of Henan. Pond #1 was treated with RhodospiriUum sp. （50 L×8× 10^8 mL^-1 ）, and Pond #2 with Pistia statiotes （ 100 m^-2 ）. After one year of experiment, results show that the combined effect of the two treatments was significant with TP dropped by 41.8% -76. 0%, TN by 61.8% -81.0%, COD by 66. 8% -79. 1% and BOD5 by 64. 8% -82.3%. It demonstrates that Pistia statiotes and RhodospiriUum sp. can greatly improve wastewater quality of swine farm.