锌对EBPR系统除磷性能的影响及其机制  

Effect of zinc on phosphorous removal capacity of EBPR system and its mechanism

作　　者：吴礼贵 邹小明[2] 杨方社[1] 龚锦程 黄浩 曾庆华 张传庭 Wu Ligui;Zou Xiaoming;Yang Fangshe;Gong Jincheng;Huang Hao;Zeng Qinghua;Zhang Chuanting(College of Urban and Environmental Sciences,Northwest University,Xi’an 710127,China;College of Life Science,Jinggangshan University,Ji’an 343009,China)

机构地区：[1]西北大学城市与环境学院,陕西西安710127 [2]井冈山大学生命科学学院,江西吉安343009

出　　处：《工业水处理》2020年第6期22-26,共5页Industrial Water Treatment

基　　金：国家自然科学基金项目(31760165,41461094);江西省杰出青年人才计划项目(20192BCBL23014);江西省自然科学基金项目(20181BAB203023);江西省教育厅重点科技项目(GJJ160727)。

摘　　要：强化生物除磷(EBPR)系统具有优良的除磷性能且在水处理领域应用较广。Zn^2+是水体中广泛存在的金属离子,其对EBPR系统除磷性能的影响及其机制尚不清楚。为此,构建EBPR系统研究了Zn^2+对该系统除磷性能的影响。研究发现,3~100 mg/L的Zn^2+对EBPR系统除磷抑制率为2.06%~98.05%。进一步研究Zn^2+对代谢中间产物及关键酶活性的影响,发现较高浓度Zn^2+(≥10 mg/L)可抑制聚磷微生物体内聚羟基烷酸酯与糖原的正常代谢(p<0.05),除磷关键酶活性也受到抑制(p<0.05)。Enhanced biological phosphorus removal(EBPR)system has excellent phosphorus removal performance and has been widely used in wastewater treatment.Zn^2+is a widespread metal ion in water bodies,however,the effect of Zn^2+on the phosphorus removal capacity of EBPR system is unclear.Therefore,the EBPR system was developed and the effect of Zn^2+on phosphorus removal performance of EBPR system was studied.Results showed that the inhibition rate of phosphorus removal ranged from 2.06%to 98.05%under the mass concentration range of 3-100 mg/L Zn^2+.The effects of Zn^2+on metabolic intermediates and the activity of key enzymes were further investigated.Results revealed that the normally metabolic of polyhydroxyalkanoates and glycogen were inhibited at high Zn2+concentration(≥10 mg/L)(p<0.05),the activity of key enzymes was also inhibited(p<0.05).

关 键 词：强化生物除磷 Zn2+ 除磷性能 

分 类 号：X703[环境科学与工程—环境工程]