The device operating parameters of stratospheric, baffled and up-flow hydrolysis acidification reactors were optimized, respectively. Three kinds of optimum device operating parameters of these reactors used in treating simulation of water samples of hard-biodegradable chemical industrial wastewater with high salinity were determined. (1) the optimum stirring speed of stratospheric reactor is 150 r/min. In this case, the COD (Chemical oxygen demand) removal rate reaches 17％, the VFA(Volatile fatty acid) growth rate reaches 167％, and the biodegradability of sewage increases from 0.30 to 0.42. (2) The optimum deflector angle of baffled reactor is 60°. In this condition, the COD removal rate reaches 16％, the VFA growth rate reaches 83％, and the biodegradability of sewage increases from 0.30 to 0.40. (3) The optimum inner loop proportion of up-flow reactor is 200％. The COD removal rate reaches 20.0％, the VFA growth rate reaches 267％, and the biodegradability of sewage increases from 0.30 to 0.44. The experiment results show that up-flow reactor performances best among the three kinds of reactor, either according to the sludge properties, or to mass transfer efficiency.%分别对平流式、折流式、升流式3种水解酸化反应器的设备运行参数进行优化,获得3种水解酸化反应器用于处理难降解高盐化工污水模拟水样的最佳设备运行参数:(1)平流式反应器搅拌器转速为150 r/min,COD(化学需氧量)去除率达到17%,VFA(挥发性脂肪酸)增长率达到167%,污水的可生化系数由0.30增大至0.42;(2)当折流式反应器导流板倾角为60°时,COD去除率为16%,VFA增长率达到83%,污水的可生化系数由0.30增大至0.40;(3)当升流式反应器内循环比为200%时,COD去除率为20%,VFA增长率达到267%,污水的可生化系数由0.30增大至O.44.试验结果表明:在这3种反应器中,采用升流式反应器所得的污泥性能和传质效率等最好的.
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