新型IC反应器在山梨醇废水处理中的工程应用

Engineering Application of New Type of IC Reactor in the Treatment of Sorbitol Wastewater

将布水装置优化后的新型内循环（IC）反应器应用于某山梨醇生产企业实际废水的二级厌氧生化处理，获得了较好的处理效果。调试阶段的结果表明：经过IC反应器的处理后，废水COD浓度由处理前的2374～4967mg／L降至301～823mg／L，COD去除率达81．4％－91．2％，COD容积负荷达8．1－13．7kg／（m3·d）；总体来说，当水力负荷增大时，COD容积负荷也相应增大；IC反应器的出水挥发性脂肪酸（VFA）基本控制在200mg／L以下；厌氧出水再依次经过接触氧化池和絮凝沉淀池等配套工艺的处理后，COD降至80mg／L以下，实现达标排放。

New type of intemal circulation （IC） reactor with an optimized water distribution device was used in secondary anaerobic biological treatment of the wastewater produced by a sorbitol production enterprise, and excellent effect has been achieved. During the debugging period, COD concentration of wastewater fell from 2 374-4 967 mg/L to 301-823 mg/L after the treatment of IC reactor, COD removal efficiency was as high as 81.4%-91.2%, and COD volume loading reached 8.1-13.7 kg（（m3.d）. In general, COD volume loading increased with the increase of hydraulic loading, and volatile fatty acids （VFA） of the IC reactor effluent were controlled Under 200 mg/L basically. After subsequent treatment processes such as contact aeration and flocculating settling, COD concentration of wastewater declined to 80 mg/L which was satisfactory to the emission standard.