江津区畜禽养殖污染分布特征及其问题解析

The Distribution Characteristics of Livestock Pollution and Problem Analysis in Jiangjin

对江津区的畜禽养殖现状及污染物产生量进行了调查研究,对畜禽养殖污染防治问题进行了解析,江津区纳入"四清四治"系统的养殖场共有495个,养殖量14.80万猪当量。从种类看,主要是生猪和肉牛,其养殖比例分别达到70.44%和12.28%。从区域看,禁养区、限养区、适养区养殖比例分别为10.77%、15.31%和73.92%。从镇街看,养殖量超过万头猪当量的镇街依次为珞璜镇、夏坝镇、吴滩镇、白沙镇、德感街道等。江津区畜禽养殖粪便量为14.66万t,尿污产量为14.80万t,COD量为1.65万t,氨氮为0.28万t。粪便、尿污、COD、氨氮排放最多的主要为生猪,分别占57.12%、82.88%、68.57%和85.74%。最后提出了江津区控制畜禽养殖环境污染的防治对策与建议。

The situation and pollutants of livestock and poultry raising in Jiangjin District was investigated. The question of the prevention and control of livestock and poultry raising pollution was analyzed. Jiangjin has 495 farms in ＂ Siqing Sizhi＂ system,which contained 148 000 pig equivalent. From the type of raising,the mainly raising are pigs and beef cattle,the proportion reached 70. 44% and 12. 28%. From the area,prohibited farming area,limited farming area,the suitable farming area of proportion is 10. 77%,15. 31% and 73. 92% respectively.From the town,animal quantity more than million pigs are Luohuang Town,Xiaba Town,Wutan Town,Baisha Town,etc. The amount of livestock and poultry manure was 146 600 t,urine output was 148 000 t,COD was 16 500 t,ammonia nitrogen was 2 800 t in Jiangjin. Pigs discharge the emissions of feces,urine dirt,COD,ammonia nitrogen is most,accounted for 57. 12%,82. 88%,68. 57% and 85. 74%. Finally some control countermeasures for livestock environmental pollution were put forward in Jiangjin.