焦点提醒：添加卵白质类餐厨垃圾增进污泥厌氧发酵产酸 苑宏英1,2， 李琦1,2， 张嘉艺1,2， 杨玉萍1,2， 王雪1,2， 张小亚1,2（1.天津城建年夜学 情况与市政项目学院，天津 300384；2.天津市水质科学与手艺重点尝试室，天津 300384）

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• English上一篇下一篇PDF下载[1]苑宏英,李琦,张嘉艺,等.添加卵白质类餐厨垃圾增进污泥厌氧发酵产酸[J].中国给水排水,2022,38(17):100-103.　YUANHong-ying,LIQi,ZHANGJia-yi,et al.Anaerobic Fermentation of Sludge to Produce Acid Promoted by Addition of Protein Food Waste[J].China Water & Wastewater,2022,38(17):100-103.点击复制

  添加卵白质类餐厨垃圾增进污泥厌氧发酵产酸中国给水排水[ISSN:1000-4062/CN:12-1073/TU]卷:第38卷期数:2022年第17期页码:100-103栏目:出书日期:2022-09-01

  Title:

  Anaerobic Fermentation of Sludge to Produce Acid Promoted by Addition of Protein Food Waste

  作者:

  苑宏英^{1,2， 李琦1,2， 张嘉艺1,2， 杨玉萍1,2， 王雪1,2， 张小亚1,2}

  （1.天津城建年夜学 情况与市政项目学院，天津 300384；2.天津市水质科学与手艺重点尝试室，天津 300384）

  Author(s):

  YUAN　Hong-ying^{1，2， LI　Qi1，2， ZHANG　Jia-yi1，2， YANG　Yu-ping1，2， WANG　Xue1，2， ZHANG　Xiao-ya1，2}

  （1. School of Environmental and Municipal Engineerin����APPg， Tianjin Chengjian University， Tianjin 300384， China； 2. Tianjin Key Laboratory of Aquatic Science and Technology， Tianjin 300384， China）

  要害词:

  短链脂肪酸;卵白质类餐厨垃圾;污泥;厌氧发酵

  Keywords:

  short-chain fatty acids;protein food waste;sludge;anaerobic fermentation

  摘要:

  为了提多发酵系统中短链脂肪酸（SCFAs）的产量，将卵白质类餐厨垃圾按总固体（TS）质量比为1∶1添加到残剩污泥中，进行动期8 d的间歇式发酵，研究分歧pH对SCFAs产量的影响。成果注解，向污泥中添加卵白质类餐厨垃圾可以或许较着提高SCFAs产量，夹杂底物中最年夜SCFAs产量为215.9 mgCOD/gTS，是零丁污泥的6.1 倍。卵白质类餐厨垃圾的添加，不但提高了夹杂底物中卵白质含量，并且增进了卵白质的操纵，从而致使SCFAs产量增添。强碱性前提有益在卵白质含量丰硕的夹杂底物发生SCFAs，这归因在消融性COD（SCOD）的年夜量增添。pH为10的反映组SCOD浓度远高在其他反映组，为后续反映供给了基质。对夹杂底物在pH为10时SCFAs的构成进行阐发发觉，最首要的成份是乙酸，其次是丙酸。

  Abstract:

  To improve the yield of short-chain fatty acids (SCFAs) in fermentation systems, protein food waste was added to the excess sludge at a total solid (TS) mass ratio of 1∶1, and batch experiment with fermentation cycle of 8 days was carried out to investigate the effect of different pH on the yield of SCFAs. The addition of protein food waste to excess sludge could significantly increase the SCFAs yield.The maximum SCFAs yield in the mixed substrate was 215.9 mgCOD/gTS, which was 6.1 times that of the single sludge.The addition of protein food waste not only increased the protein content in the mixed substrate, but also provided easily biodegradable proteins for the microorganisms, which led to the increase of SCFAs yield. Strongly alkaline condition was beneficial for protein-rich mixed substrate to produce SCFAs, which was attributed to the significant increase in soluble COD (SCOD). The SCOD of the experimental group with pH of 10 was much higher than that of the other control groups, which provided a substrate for the subsequent reactions. Analysis of the composition of SCFAs in mixed substrate at pH of 10 showed that acetic acid was the main component, followed by propionic acid.

  更新日期/Last Update:2022-09-01

  
  

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