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厌氧复合床处理有机硫染料中间体-对位酯生产废水
Treatment of Organic Sulfur Dye Intermediate-para-ester Producing Wastewater Using Upflow Blanket Filter
【摘要】 通过145天连续流试验,考察厌氧复合床处理对位酯生产废水的可行性。逐步提高进水COD,考察有机负荷(OLR)从0.167 g COD/(L·d)提高到6.68 g COD/(L·d)过程中的处理效果。结果表明在最优的OLR 5.0 g COD/(L·d)的条件下(COD 15000 mg/L),COD去除率达到60%,产甲烷率达到1.23 d-1。增加硫酸盐达到10000 mg/L(COD/SO2-4=1.5),发现硫酸盐还原菌没有受到抑制,产甲烷菌却受到抑制。恢复COD/SO42-至3.58,厌氧系统在1周后完全恢复。有机硫化合物的特性使出水中虽然有硫化物的产生,出水硫酸盐却一直高于进水硫酸盐。
【Abstract】 Treatment of para-ester producing wastewater using upflow blanket filter was investigated. The influence of the organic loading rate(OLR) from 0. 167 g COD/(L·d) to 6. 68 g COD/(L·d) by increasing influent COD in a stepwise model on the performance of the reactor was evaluated. The optimal OLR at COD of 15000 mg/L was observed as5. 0 g COD/(L · d) where 60% removal efficiency of COD and 1. 23 d-1 of methane producing rate was achieved,respectively. By introducing sulfate into the feed up to 10000 mg/L(COD/SO2-4= 1. 5) resulted in an inhibition of methanogenesis with no obvious suppression of sulfidogenesis. No additional sulfate was annually added to raw wastewater and COD/SO2-4 ratio was adjusted back to 3. 58,the reactor exhibited a quick recovery after one week. Interestingly,though a certain quantity of sulfide was simultaneously generated in the whole operation,sulfate concentration in the effluent was higher than in the influent due to the property of organic sulfur compound.
【Key words】 para-ester producing wastewater; upflow blanket filter reactor; methane-producing bacteria(MPB); sulfate reducing bacteria(SRB); COD/SO42- ratio;
- 【文献出处】 广州化工 ,Guangzhou Chemical Industry , 编辑部邮箱 ,2017年22期
- 【分类号】X788
- 【被引频次】9
- 【下载频次】95