缓释氧材料对沉积物中磷组分和微生物活性的影响  

Impact of Oxygen Slow-releasing Compound on Phosphorus Fractions and Microbial Activity in the Water

作　　者：钱嘉辰 曾楚涵 杨禄姣 王先兵[1] 邓佳炜 彭海山 刘文莉[1] Qian Jiachen;Zeng Chuhan;Yang Lujiao;Wang Xianbing;Deng Jiawei;Peng Haishan;Liu Wenli(School of Civil Engineering and Architecture,Taizhou University,Taizhou 318000,China)

机构地区：[1]台州学院建筑工程学院,浙江台州318000

出　　处：《台州学院学报》2022年第3期63-70,共8页Journal of Taizhou University

基　　金：国家级大学生创新创业训练计划项目(202110350047);浙江省自然科学基金资助项目(LY19E090001)。

摘　　要：水体缺氧是造成水体黑臭和富营养化的重要原因。本文利用过氧化钙(CaO2)、膨润土、水泥和河砂合成了一种缓释氧复合材料(OSRC),研究其释氧性能及对污染水体磷(P)去除以及沉积物中磷组分和微生物酶活性的影响。结果表明:OSRC在一段时间内可有效释放氧气。添加OSRC后,上覆水中总P含量降低,沉积物中无机P的主要成分从可利用P(NaOH-P)变为生物不可利用P(HCl-P),这有利于控制P从沉积物中释放。此外,OSRC的加入改善了沉积物中脱氢酶、脲酶和蛋白酶的微生物活性。因此OSRC具有作为稳定氧源的能力,可为解决城市水体富营养化问题提供新的参考方案。The depletion of oxygen brings a series of environmental problems such as eutrophication,black and odorous in water.Here a kind of a low-cost oxygen slow-releasing compound(OSRC)was prepared by mixing with CaO2,Na-bentonite,river sand and cement,and monitored for characterizing its effects on removal in the overlying wa‐ter as well as P fractions and microbial enzyme activity in the sediment.The results showed that OSRC was effective in releasing oxygen over a period of time.The contents of TP reduced in the overlying water after OSRC amendment.The main composition of inorganic P in the sediment changed from available P(NaOH-P)to unavailable P(HCl-P),in‐dicating OSRC treatment was favorable in controlling the release of P from the sediment.Moreover,OSRC amendment improved microbial activity of dehydrogenase,urease and protease in the sediment.These findings suggest that the OS‐RC formulation has the ability to be a steady oxygen providing source which may potentially lead to new solutions within the problem of eutrophication in the water.

关 键 词：缓释氧化合物 过氧化钙 磷组分 酶活性 

分 类 号：X52[环境科学与工程—环境工程]