改性粉煤灰强化SBR工艺处理污水实验研究

摘要

A sequencing batch reactor (SBR) was employed to treat simulated the sewage.The effect of modified fly ash (MFA) addition on SBR was studied.The amount of MFA,the effect of MFA addition on the substrates (COD,TP and ammonia nitrogen) and sludge performances were investigated.The results showed that the removal efficiency of COD,TP and ammonia nitrogen was 30%,56% and 48%,respectively in the static experiment.The optimum addition amount of MFA was 1 g/L.The average removal efficiency of COD,TP and ammonia nitrogen increased in 20%,16% and 36%,respectively in MFA-SBR.Meanwhile,the average MLSS and SOUR increased 426 mg/L and 3.7 mgO2/(gMLSS·h),respectively,and the average SVI decreased 22 mg/L.The microorganisms used MFA as biological carrier and enriched with the addition of MFA.The sludge performance was improved and the removal efficiency of substrates also increased.%采用SBR工艺处理污水,研究投加改性粉煤灰(MFA)对SBR工艺的影响,考察MFA投加量及其对各基质(COD、TP和氨氮)去除率和污泥性能影响.结果表明,静态实验MFA投加量为1 g/L 时,污水COD、TP和氨氮去除率分别为30%,56%和48%.投加MFA的SBR(MFA-SBR)对污水COD、TP和氨氮平均去除率分别提高20%,16%和36%,污泥平均MLSS和SOUR分别增加426 mg/L和3.7 mgO2/(gMLSS·h),平均SVI降低22 mg/L.MFA-SBR工艺运行时,微生物以MFA为载体而富集,改善了污泥性能,强化了对各基质的去除.