中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 臭氧氧化对奶牛场沼液中磷形态转化的影响 农业环境科学学报 2019 (2) 451-457
Position: Home > Articles > Effect of ozone oxidation on phosphorus speciation transformation in dairy biogas slurry Journal of Agro-Environment Science 2019 (2) 451-457

臭氧氧化对奶牛场沼液中磷形态转化的影响

作  者：
李果;陈玉成;简维佳;贾社;尹晓博
单  位：
西南大学资源环境学院;农村清洁工程重庆市工程研究中心
关键词：
沼液;臭氧氧化;磷;形态转化
摘  要：
为了提高沼液磷的回收效果,研究了曝气种类和曝气条件对奶牛场沼液磷形态转化的影响。结果表明:在参考曝气条件下,与氮气和空气相比,臭氧能更大程度地降低颗粒态磷和交换态磷含量,并大幅度提升溶解性正磷酸盐含量。臭氧曝气的优选条件为沼液初始pH值为6、臭氧发生量为10 g·h~(-1)、氧化时间为60 min,曝气后沼液中溶解性正磷酸盐浓度提高了76.12%,溶解性正磷酸盐占总磷比例提升20.75%。臭氧氧化可以促进颗粒态磷和交换态磷向溶解性正磷酸盐转化,从而促进沼液磷的回收。
译  名：
Effect of ozone oxidation on phosphorus speciation transformation in dairy biogas slurry
作  者：
LI Guo;CHEN Yu-cheng;JIAN Wei-jia;JIA She;YIN Xiao-bo;College of Resources & Environment, Southwest University;Chongqing Engineering Research Center of Rural Cleaning;
单  位：
LI Guo%CHEN Yu-cheng%JIAN Wei-jia%JIA She%YIN Xiao-bo%College of Resources & Environment, Southwest University%Chongqing Engineering Research Center of Rural Cleaning
关键词：
biogas slurry;;ozone oxidation;;phosphorus;;speciation transformation
摘  要：
With the rapid development of large-scale livestock and poultry breeding, outputs of biogas slurry are increasing. However, most large-scale farms are located in the suburbs of cities, so it is difficult to find sufficient farmland to absorb the biogas slurry. Moreover, thereis a large amount of phosphorus in biogas slurry, and its direct discharge may lead to eutrophication of water bodies. Phosphorus is an ex?tremely scarce and non-renewable resource, and the recovery of phosphorus from biogas slurry can effectively alleviate the combined prob?lems of phosphorus resource shortage and phosphorus pollution aggravation, which is closely related to the content of dissolved orthophos?phate in biogas slurry. In order to increase the content of dissolved orthophosphate, phosphorus species and contents in biogas slurry from adairy farm in Banan District, Chongqing, were determined. The effects of the initial pH of biogas slurry, aeration type, ozone amount, andoxidation time on the speciation transformation of phosphorus were studied. It was found that the ratio of dissolved orthophosphate to totalphosphorus in the initial biogas slurry was 26.29%, and that of particulate and exchangeable phosphorus was 37.76%, indicating that partic?ulate and exchangeable phosphorus have the potential to be transformed into dissolved orthophosphate. Compared with nitrogen and air,ozone oxidation could lead to larger decreases in particulate and exchangeable phosphorus contents and could greatly enhance the contentof dissolved orthophosphate under reference aeration conditions. The optimal conditions for ozone aeration were also obtained; i.e., an ini?tial pH of biogas slurry was 6, an ozone amount of 10 g·h~(-1), and an oxidation time of 60 min. After ozone aeration, the concentration of dis?solved orthophosphate in biogas slurry increased to 76.12%, and the ratio of dissolved orthophosphate to total phosphorus improved to20.75%. Ozone oxidation can promote the transformation of particulate and exchangeable phosphorus into dissolved orthophosphate, thus promoting the recovery of phosphorus from biogas slurry.

相似文章

导出引用
计量
文章访问数: 17
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46