摘要：
To rapidly acclimate granules and efficiently treat the actual coking wastewater,the granules that treat brewery wastewater were acclimated with the actual coking wastewater at 22-27 °C (operating two EGSB reactors in parallel).The COD removal efficiencies were investigated in the following three operation stages:the micro-aerobic operation condition (compared with the anaerobic operation condition),addition of organic nutrients (anaerobic and micro-aerobic operation),and addition of inorganic carbon substances (anaerobic and micro-aerobic operation).The results showed that,compared with the anaerobic operation,the micro-aerobic operation could distinctly enhance the removal of toxic pollutants in the actual coking wastewater.In the initial stage of acclimatization with actual coking wastewater,the COD average removal was 24.8％ for micro-aerobic operation (only 5.16％ for anaerobic operation),undergoing such water quality shocks as 1 500 mg · L-1COD,220 mg·L-1 ammonia→2 000 mg · L-1COD,70 mg · L-1 ammonia→700 mg · L-1COD,and 104 ～220 mg · L-1 ammonia.Though micro-aerobic operation could keep full expansion of granules sludge bed,the enhancement to COD removal was very limited.The addition of organic nutrients could not distinctly improve the COD removal efficiency at only 22.8％ for anaerobic operation and 37.5％ for micro-aerobic operation.However,the addition of inorganic carbon nutrients (bicarbonate) could enhance the COD removal efficiency considerably.The COD average removal efficiencies were high at 53.8％ and 75.4％ for the anaerobic and micro-aerobic operation (with 31.0％ and 37.4％ increased range),respectively.The coupling of micro-aerobic operation conditions and inorganic carbon could enhance the COD removal in the actual coking wastewater and then rapidly acclimate the granules that treat actual coking wastewater.Through the supplement of bicarbonate,the high activity granules in the EGSB reactor could be acclimated within 40 d and then could efficiently treat pollutants in the actual coking wastewater.Under the conditions of 54.8-1 927 mg · L-1,10.1-154.3 mg · L-1,0.9-57.8 mg · L-1 and 66.7-340.4 mg · L-1 of COD,phenol,cyanide and thiocyanate influent concentrations,respectively,a 1.2 L · h-1 influent flow,10 h HRT,the COD removal efficiency was 78％-86％,and the average removal efficiencies of phenol,cyanide and thiocyanate were 98.9％,93.1％ and 97.5％,respectively.%为实现处理焦化废水的颗粒污泥的快速培养,进而高效处理焦化废水,在22～ 27°C环境温度下,平行运行2个EGSB反应器,用焦化废水驯化处理啤酒废水颗粒污泥,对微氧运行(与厌氧对比),有机营养物添加(厌氧、微氧运行)、无机碳营养添加(厌氧、微氧运行)3种情况时的污染物质(COD)去除效果进行实验研究.研究结果表明:与厌氧相比,微氧运行能够明显强化焦化废水中毒性污染物质的去除.在焦化废水驯化初期,多次水质冲击(1 500 mg·L-1 COD,220 mg·L-1氨氮→2 000 mg·L-1COD,70 mg·L-氨氮→700 mg·L-COD,104～220 mg·L-1氨氮),微氧运行时COD平均去除率为24.8％(厌氧运行时仅为5.16％).微氧运行虽然保证了污泥床的有效膨胀,但COD去除率的提高仍然有限.有机营养物的添加并没有使得COD去除率大幅提高,厌氧时为22.8％,微氧时为37.5％.无机碳营养(碳酸氢钠)的添加能够大幅提高焦化废水中COD去除率,厌氧时提高到53.8％;微氧时提高到75.4％,增幅分别达到31.0％和37.4％.微氧运行条件与无机碳营养的耦合作用能强化焦化废水中COD的去除,快速驯化培养处理焦化废水颗粒污泥.通过给处理焦化废水微氧EGSB反应器内添加碳酸氢钠,40 d就能完成高活性颗粒污泥的培养,高效处理焦化废水中各种污染物质.进水COD、酚类、氰化物和硫氢化物分别为54.8-1 927 mg·L-1,10.1-154.3 mg·L-1,0.9-57.8 mg·L-1和66.7-340.4mg·L-1、进水流量1.2L·h-1、HRT10 h时,COD去除率达到78％～ 86％,酚类、氰化物、硫氢化物的平均去除率分别高达98.9％、93.1％和97.5％.
