污泥与餐厨垃圾发酵产氢种泥预处理方法比较  

Comparison of Seed Sludge Pretreatment Methods for Hydrogen Production from Sewage Sludge and Food Waste

作　　者：吴云奇[1] 李茹莹[1] 

机构地区：[1]天津大学环境科学与工程学院,天津300072

出　　处：《中国生物工程杂志》2015年第12期78-83,共6页China Biotechnology

基　　金：国家"863"计划(2012AA063502)资助项目

摘　　要：以剩余污泥和餐厨垃圾作为混合基质进行厌氧发酵产氢批式试验,比较六种常用的产氢种泥预处理方法[热处理、化学抑制剂2-溴乙基磺酸钠(BESA)处理、酸处理、碱处理、连续曝气、重复曝气]对产氢的影响。结果表明,未经预处理的种泥氢气产率最低,且有明显的吸氢和产甲烷现象。BESA处理、酸处理、连续曝气和重复曝气种泥产氢效果较好,其中重复曝气预处理种泥氢气产率最高,为86.9 ml-H2/g-VSadded,对产甲烷菌有明显抑制。热处理和碱处理种泥产氢效果较差,反应后期出现吸氢反应并有明显的甲烷累积现象。发酵产氢过程中p H值从中性下降到5.0左右,对产甲烷菌活性也具有一定的抑制作用。Batch experiments are conducted to produce hydrogen from sewage sludge and food waste. Six commonly used hydrogen-producing seed sludge pretreatment methods are compared, including heat treatment, chemical inhibitor sodium 2-bromoethanesulphonate （ BESA ） treatment, acid treatment, alkali treatment, continuous aeration and repeated aeration. Results show that hydrogen yield of seed sludge without pretreatment is lowest, with hydrogen uptake and methane production. Hydrogen production by seed sludge pretreated by BESA, acid, continuous aeration and repeated aeration perform relatively better, among which repeated aeration treated sludge has highest hydrogen yield, with the value of 86.9 ml-H2/g-VSadded. These four pretreatment methods can obviously inhibit methanogens, but the other two pretreatment methods, heat and alkali treatments cannot inhibit methanogens effectively, with lower hydrogen yields and hydrogen uptake as well as methane production. The pH drop during hydrogen production also inhibits methane production activity.

关 键 词：发酵产氢 种泥预处理 污泥 餐厨垃圾 

分 类 号：Q819[生物学—生物工程]