厌氧颗粒污泥降解洛克沙胂的研究  

The Study on Degradation of Roxarsone by Anaerobic Granular Sludge

作　　者：袁瑞 周宇鹏 张磊 Yuan Rui;Zhou Yupeng;Zhang Lei

机构地区：[1]滁州学院土木与建筑工程学院,安徽滁州239000 [2]安徽明光市水务局,安徽明光239400

出　　处：《滁州学院学报》2020年第2期43-47,共5页Journal of Chuzhou University

基　　金：安徽省高校自然科学研究重点项目“不同污染类型的河道细菌群落特征及机制研究”(KJ2019A0641)。

摘　　要：洛克沙胂(3-硝基-4-羟基苯砷酸)作为一种广泛使用的的饲料添加剂,会随动物粪便暴露在环境中,造成水体污染。本文通过试验研究厌氧颗粒污泥对洛克沙胂的降解过程和能力。实验表明:洛克沙胂在厌氧颗粒污泥作用下很快还原为4-羟基-3-氨基苯砷酸(HAPA)和无机砷,生成的HAPA最终基本被完全降解,无机砷先增多后减少并趋于稳定;洛克沙胂的添加可以抑制产气,也会造成挥发性脂肪酸(VFAs)在溶液中的积累。本研究为含洛克沙胂废水的处理提供了理论依据。Roxarsone(3-nitro-4-hydroxy arsenic acid),as a widely used feed additive,will be exposed to the environment with animal feces,causing water pollution.The degradation pathway and process of roxarsone by anaerobic granular sludge was studied in this paper.The experimental results show that Roxarsone was rapidly reduced into 4-hydroxy-3-arsanilate(HAPA)and inorganic aesenic by anaerobic granular sludge.HAPA was finally broken down.The degraded product inorganic aesenic firstly increased then decline and finally almost unchanged.The addition of roxarsone could inhibit the gas production and cause accumulation of VFAs in the solution.The study provided a theoretical basis for the treatment of wastewater containing roxarsone.

关 键 词：洛克沙胂 厌氧降解 厌氧颗粒污泥 无机砷 

分 类 号：X703[环境科学与工程—环境工程]