间歇式厌氧反应器处理猪粪废水工艺条件研究

Technological study for piggery wastewater treatment in batch anaerobic reactor

对间歇式厌氧反应器处理猪粪废水的工艺条件进行了探索研究,结果显示:底物粪水消耗速率与初始COD值高低关系不大,当初始COD为4 000 mg/L左右时,产气量较大;当反应温度为35℃时,中温菌活性较佳,COD下降速率较快,产气量较大;350 mL粪水,配加100 mL污泥时,COD变化速率较快,产气量较大,而且所需的时间较少,0.33 d便有气体产生;产酸菌具有较大的pH适应范围,产甲烷菌对pH值十分敏感,只能在pH6.9附近很小范围内具有强活性。

The process conditions for pig manure wastewater treatment with batch anaerobic reactor were mainly studied.The experimental results showed that manure consumption rate has little to do with the level of the initial COD value.When the initial COD is 4 000 mg/L,gas production is higher;when the reaction temperature is 35 ℃,the activity of the mesophilic bacteria is better;when 100 mL sludge is joined with 350 mL manure,COD changes faster,gas production becomes higher,and reaction time required less,there was gases in 0.33 d;a large range of pH can be adapted to acid bacteria,but methanogenic bacteria is very sensitive to pH value,and there is strong activity in a small range of 6.9.