热碱预处理后得克隆对污泥厌氧发酵产酸及污泥特性的影响  

Effect of dechlorane plus on acid production and physical-chemical properties during waste activated sludge anaerobic fermentation after thermo-alkaline pretreatment

作　　者：张静 赵建伟 孙英杰[1,2] 卞荣星 高莹[1,2] 张大磊 ZHANG Jing;ZHAO Jian-wei;SUN Ying-jie;BIAN Rong-xing;GAO Ying;ZHANG Da-lei(School of Environmental and Municipal Engineering,Qingdao University of Technology,Qingdao 266033,China;Qingdao Solid Waste Pollution Control and Resource Engineering Research Center,Qingdao 266033,China)

机构地区：[1]青岛理工大学环境与市政工程学院,山东青岛266033 [2]青岛市固体废物污染控制与资源化工程研究中心,山东青岛266033

出　　处：《中国环境科学》2021年第3期1255-1263,共9页China Environmental Science

基　　金：国家自然科学基金资助项目(51978350,51908305)。

摘　　要：为了探究新兴污染物得克隆(DPs)对剩余活性污泥(WAS)发酵产酸及污泥特征的影响,以WAS及DPs为研究对象,建立序批式反应器,在中温条件下探究了不同含量的DPs对WAS发酵的影响.结果表明,DPs对污泥厌氧发酵产短链脂肪酸(SCFA)具有明显的抑制作用,当DPs含量为300.0mg/kg TSS时,SCFA的最大产量仅为151.2mg COD/g VSS,是空白样品的0.7倍.DPs的存在会影响WAS的理化性质,且DPs促进了污泥的分解,但抑制了水解和酸化过程,且随着DPs浓度的增加抑制作用越明显.同时,DPs抑制有机质的释放,当DPs含量为300.0mg/kg TSS,溶解性化学需氧量(SCOD)的最大浓度仅为空白组的0.74倍,溶解性蛋白质与多糖的浓度也低于空白组.此外,DPs还影响NH_(4)^(+)-N和PO_(4)^(3)--P的释放,高剂量的DPs促进了发酵液内NH_(4)^(+)-N和PO_(4)^(3)-P的释放.In order to explore the effect of emerging contaminates Dechlorane Plus(DPs)on acid production and sludge characteristics during waste activated sludge(WAS)anaerobic fermentation,WAS and DPs were investigated as objects to establish a sequential batch reactor,which was explored under medium temperature.The results showed DPs had a significant inhibitory effect on anaerobic fermentation of sludge to produce short-chain fatty acids(SCFA),and when DPs content was 300.0mg/kg TSS,the maximum output of SCFA was only 151.2mg COD/g VSS,which was 0.7times of that in the blank.The presence of DPs will affect the physical and chemical properties of WAS,since DPs will promote the process of sludge cracking,but the hydrolysis and acidification processes were inhibited,and the inhibitory effect became more obvious as the increase of DPs dosage.DPs also inhibit the release of organic matters,when DPs content is 300.0mg/kg TSS,the maximum concentration of SCOD is only 0.74times of that in the blank,the concentration of soluble protein and soluble polysaccharide is also significantly lower than that in the blank.In addition,DPs also affect the release of NH_(4)^(+)-N and PO_(4)^(3)--P,high dosage of DPs promote the release of NH_(4)^(+)-N and PO_(4)^(3)--P.

关 键 词：得克隆 剩余污泥 厌氧发酵 污泥特征 

分 类 号：X705[环境科学与工程—环境工程]