中温UASB反应器处理餐厨垃圾废水中试研究

发布时间：2017-12-28 01:10

本文关键词：中温UASB反应器处理餐厨垃圾废水中试研究　出处：《中国给水排水》2016年17期 　论文类型：期刊论文

更多相关文章： 餐厨垃圾废水 UASB 中温厌氧消化 中试

【摘要】：利用一个有效容积为28 m~3的UASB反应器在(35±2)℃条件下进行了餐厨垃圾废水半连续式中温厌氧消化试验。通过增加进料量提高进水容积负荷,使水力停留时间(HRT)由50 d逐步降低至10 d,研究了HRT和进水容积负荷对处理效果的影响。结果表明,在HRT=14 d、进水容积负荷为4.96 kg COD/(m~3·d)时达到最佳运行工况,其容积产气量稳定在2.68 m~3/(m~3·d)左右,产气率达0.66 m~3/kg COD,COD容积去除负荷为4.21 kg COD/(m~3·d)。当HRT为12~35 d时,对COD的去除率稳定在82.59%~87.78%之间,出水VFA/碱度值维持在0.1~0.38之间,表明反应器具有足够的抗酸化缓冲能力,在该HRT范围内均可稳定运行。
[Abstract]:A semi continuous medium temperature anaerobic digestion test of kitchen waste waste water was carried out with a UASB reactor with an effective volume of 28 m~3 at (35 + 2) C. By increasing the feed volume and increasing the intake volume load, the hydraulic residence time (HRT) decreased from 50 d to 10 d, and the effect of HRT and inlet volume load on the treatment effect was studied. The results show that when HRT=14 D and inlet volume load is 4.96 kg COD/ (m~3. D), the best operation condition is achieved, and its volumetric gas production is stable at 2.68 m~3/ (m~3. D). The gas production rate is 0.66 m~3/kg COD, and the volume of the volume of the removal is 4.21. When HRT is 12~35 D, the removal rate of COD is stable between 82.59%~87.78%, and the VFA/ alkalinity value of water is maintained between 0.1~0.38, indicating that the reactor has enough anti acid buffering capacity and can run stably in the HRT range.
【作者单位】：宁波大学建筑工程与环境学院;宁波开诚生态技术有限公司;
【基金】：“十二五”国家科技支撑计划项目(2012BAC25B05)
【分类号】：X703
【正文快照】： 餐厨垃圾废水是餐厨垃圾经滤水、分拣、破碎、制浆、三相分离等前处理后产生的,具有有机物、氨氮含量高等特征,工程中多采用完全混合式厌氧反应器(CSTR)处理[1]。但从实际运行效果来看,此法存在HRT长、去除负荷低、产气效率不高等问题。为提高厌氧处理效率,国内外学者对采用升

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