SBBR工艺处理肉类制品厂废水的实验研究
Experimental study on treatment of meat product plant wastewater by sequencing batch biofilm reactor
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摘要: 在温度为26℃，pH保持在6.8～7.3的条件下，启动序批式生物膜反应器(SBBR)反应器，并在对曝气时间和DO浓度进行优化调整的基础上，对SBBR工艺处理肉类制品厂废水进行研究。SBBR工艺处理肉类制品厂废水的优化参数为：曝气时间8 h，DO浓度为2 mg/L。在此综合优化参数下稳定运行20 d，COD和BOD5的平均去除率分别达到了91.5％和92.5％，氨氮的平均去除率为90.6％，最高达到了92.3％，SS的去除率也保持在90％以上。优化参数条件下SBBR工艺针对肉类制品厂废水的处理效果比较理想。Abstract: SBBR was applied to treat meat product plant wastewater. With the temperature of 26℃ and pH of 6.8～7.3，SBBR reactor was started after adjusting the aeration time and dissolved oxygen concentration. The results indicated that the obtained optimal parameters of SBBR for meat product plant wastewater treatment were：aeration time 8 h，and dissolved oxygen 2 mg/L. After 20 days’ operating in the optimal parameters，the average removal rates of COD and BOD5 reached 91.5％ and 92.5％ respectively，the average removal rate of NH+4-N was 90.6% and the best was 92.3%，the removal rate of SS also kept above 90%. The effect of the SBBR treatment which under optimal parameters dealing with meat plant wastewater was well.
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Key words:
- SBBR /
- organic pollutant /
- biological nitrogen removal /
- dissolved oxygen /
- aeration time
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