厌氧序批式反应器处理青霉素制药废水

Penicillin Production Wastewater Treatment by Anaerobic Sequencing Batch Reactor

为研究厌氧序批式反应器(AnSBR)处理青霉素制药废水的效能与机制,依次考察了不同进水浓度(1、10、100、1000 mg/L)青霉素G钠盐对AnSBR有机物去除、甲烷转化和污泥特性的影响。结果表明,低浓度(1、10 mg/L)青霉素G钠盐对有机物去除和甲烷转化无显著影响,100 mg/L青霉素G钠盐产生了短期负面但可逆影响,1000 mg/L青霉素G钠盐产生了持续负面且不可逆影响,青霉素G钠盐主要影响厌氧污泥沉降性。在容积负荷2.5 g COD/(L·d)和进水青霉素G钠盐不超过100 mg/L的条件下,AnSBR的有机物去除率和甲烷转化率可达到85%和0.25 L/g COD,出水青霉素G钠盐低于检测限。甲烷杆菌属和甲烷八叠球菌属等具有耐受高浓度青霉素G钠盐环境的相对优势,使得AnSBR处理青霉素制药废水具有良好的应用潜力。

The performance and mechanism of anaerobic sequencing batch reactor(AnSBR)for penicillin production wastewater treatment were proposed,and the organics removal,methane production and sludge characteristics on the synthetic penicillin production wastewater with different concentration(1,10,100,and 1000 mg/L)of the penicillin G sodium(CAS 69-57-8)were investigated.The results showed that there were no significant effects on the low-concentration(1,10 mg/L)penicillin G sodium for the organics removal and methane production in AnSBR.There were short-term negative but reversable effects on the medium-concentration(100 mg/L)penicillin G sodium,however the high-concentration(1000 mg/L)penicillin G sodium has continuous negative and irreversible effects.The penicillin G sodium mainly affected the sludge settleability.Under the influent volumetric loading rate of 2.5 g(COD)/(L·d)and the penicillin G sodium of 100 mg/L)for AnSBR,the organics removal and methane production reached 85%and 0.25 L/g(COD),respectively and the penicillin G sodium was detected in the effluent of AnSBR.Methanogens(e.g.,Methanobacterium,Methanosarcina)have the relative advantage of tolerating in the high-concentration penicillin G sodium,which makes the AnSBR as a promising process for the penicillin production wastewater treatment.