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《Environmental Science & Technology》 2017-02
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Influence to the Nitrogen and Phosphorus Degradation in Anaerobic Process with the Pretreatment of the Piggery Wastewater

LI Xiaoyin;ZHANG Sicheng;ZHANG Dongmei;JIA Changmei;HUANG Xiaojun;LAI Xiaohua;WANG Jia;YANG Jun;College of Environmental and Biotechnical Engineering,Guangdong University of Petrochemical Technology;  
NH_4~+-N and PO_4~(3-)-P concentrations from piggery wastewater would be increased after anaerobic process,which resulted in the load increase in further treatments and hardly satisfying the discharging standards.Using the MAP precipitation to pre-degrade NH_4~+-N and PO_4~(3-)-P concentrations of the piggery wastewater and the batch type anaerobic fermentation experiments were carried out to study the effects of the anaerobic degradation between the supernatants from MAP precipitation and raw wastewater.Results showed that NH_4~+-N,PO_4~(3-)-P concentrations were degraded to 35.7%,93.7% under the condition of P:Mg:N ratio 1:l:4.0 and pH value 9.0,and in the following anaerobic process,NH_4~+-N,PO_4~(3-)-P concentrations of the supernatants from MAP precipitation were decreased to 437,55.1 mg/L,meanwhile COD degradation was improved by 11%compared with the supernatants of the raw wastewater.Hence,MAP precipitation to pre-degrade NH_4~+-N,PO_4~(3-)-P concentrations of the piggery wastewater were benefit to the further anaerobic fermentation and significantly improved the anaerobic effects.
【Fund】: 广东省自然科学基金项目(2016A030313759);; 广东省级科技计划项目(2013B020416004);; 广东省普通高校特色创新类(自然科学2015)项目:基于鸟粪石沉淀技术的规模化猪场养殖废水治理与氮磷资源化新工艺研究
【CateGory Index】: X703
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【Citations】
Chinese Journal Full-text Database 5 Hits
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【Co-citations】
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