乳渣协同污泥厌氧发酵产酸及其发酵液再利用研究  

Study on anaerobic fermentation of milk residue cooperating with sludge and recycle of fermentation liquor

作　　者：金宝丹 钮劲涛 李诺楠 代菁雯 陶泓帆 马志刚 周萍 牛佳慧 张局 张钟方 JIN Baodan;NIU Jintao;LI Nuonan;DAI Jingwen;TAO Hongfan;MA Zhigang;ZHOU Ping;NIU Jiahui;ZHANG Ju;ZHANG Zhongfang(He′nan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration,Zhengzhou University of Light Industry,Zhengzhou 450001,China;He′nan Heng′an Environmental Protection Technology Co.,Ltd.,Zhengzhou 450001,China)

机构地区：[1]河南省环境污染治理与生态修复协同创新中心郑州轻工业大学,河南郑州450001 [2]河南恒安环保科技有限公司,河南郑州450001

出　　处：《轻工学报》2019年第6期64-71,共8页Journal of Light Industry

基　　金：河南省自然科学基金项目(182300410140);郑州轻工业大学众创空间孵化项目(2018ZCKJ201)

摘　　要：采用乳渣协同污泥厌氧发酵方式,考察在不同乳渣占比情况下,污泥厌氧发酵系统水解酸化性能和发酵液作为碳源时微生物的再利用情况.结果表明,随着乳渣占比的增加,发酵系统中蛋白质和多糖质量浓度增大,NH 4^+-N产量增大,而PO 4^3--P产量呈先增加后降低的趋势.发酵初期,在高乳渣占比发酵系统中,短链脂肪酸(SCFAs)的产量较低,但是发酵后期该发酵系统中SCFAs产量迅速增大,最高可达4289.15 mgCOD/L(表示以化学需氧量COD计,该物质的质量浓度,下同).同时发现,在m(发酵液):m(乙酸)=3:1的条件下,COD,NH 4^+-N,PO 4^3--P的去除率分别为84.50%,97.94%和76.46%,虽然随着发酵液占比的增加,污染物去除率稍有下降,但是其去除量有所增大,可见,发酵液作为碳源能够被微生物有效利用.The fermentation method of milk residue cooperating with sludge was used to inspect the hydrolytic acidizing performance of sludge fermentation system under the different ratio of milk residue as well as the microbial recycle of fermentation liquor as carbon source.The results showed that with the increase of the milk residue ratio,the protein and polysaccharides production increased,the production of NH 4^+-N increased,while the production of PO 4^3--P increased first and then decreased.In the early fermentation,short chain fatty acid(SCFAs)of high milk residue ratio fermentation system was lower than other fermentation systems.However,the SCFAs increased rapidly with the value being 4289.15 mgCOD/L(the unit refered to the chemical oxygen demand COD,the mass concentration of the substance,the same below).At the same time,the removal rate of COD,NH 4^+-N and PO 4^3--P was 84.50%,97.94%and 76.46%respectively under m(fermentation liquor):m(sodium acetate)=3:1 condition.Although the removal rate of pollutant declined with fermentation liquor ratio,but the treated volume of pollutant increased.Therefore,microorganism could use the fermentation liquor as carbon source effectively.

关 键 词：乳渣 污泥 厌氧发酵 协同作用 碳源 发酵液 

分 类 号：X703[环境科学与工程—环境工程] TS252[轻工技术与工程—农产品加工及贮藏工程]