内循环厌氧反应器处理制浆造纸废水的效能及影响因素  

Performance and Impaction Factors of Internal Circulation Anaerobic Reactor for Pulping and Papermaking Wastewater Treatment

作　　者：梁定超 胡晓东[1] 萧灿强[1] 石云峰 魏春海 LIANG Dingchao;HU Xiaodong;XIAO Canqiang;SHI Yunfeng;WEI Chunhai(School of Civil Engineering, Guangzhou University, 510006;Guangzhou Jinlongfeng Environmental Protection Equipment and Engineering Co. Ltd., Guangzhou, 510220,China)

机构地区：[1]广州大学土木工程学院,510006 [2]广州市金龙峰环保设备工程有限公司,广东广州510220

出　　处：《水处理技术》2019年第9期84-88,共5页Technology of Water Treatment

基　　金：广州大学“百人计划”项目（69-18ZX10043）;广州大学研究生创新能力培养资助计划项目（2018GDJC-M48）;广州大学仪器设备开放共享基金资助

摘　　要：介绍了处理制浆造纸废水的内循环厌氧反应器工程实例,考察了有机物(COD和挥发性脂肪酸VFA)去除效果及其影响因素(进水容积负荷、进水预酸化度、环境条件)。在平均进水COD为1 562.1 mg/L、平均进水VFA质量浓度为684.0 mg/L、平均水力停留时间为3.7 h条件下,平均COD和VFA去除率分别达到53.7%和77.9%。既保持较高COD去除率又充分发挥反应器处理能力的最佳进水COD容积负荷为11.8 kg/(m3·d)。温度(32.2~39.5℃)、碱度(以CaCO3计)(1 712.2~2 683.5 mg/L)均在适宜范围内,pH(7.5~7.9)略高于适宜范围。进水酸化度不足和水力停留时间较短是进一步提高COD去除率的主要限制因素,可通过适当延长预酸化池和内循环厌氧反应器的水力停留时间来解决。A full-scale internal circulation anaerobic reactor treating pulping and papermaking wastewater was introduced in this study, where the organic removal (chemical oxygen demand COD and volatile fatty acid VFA) and impaction factors (influent volumetric organic load, influent pre-acidification degree, environmental conditions) were investigated. Average removal for COD and VFA was 53.7% and 77.9%, respectively, under average influent COD of 1 562.1 mg/L, average influent VFA of 684.0 mgHAc/L and average hydraulic retention time of 3.7 h. The optimum influent volumetric organic load was 11.8 kgCOD/(m·3 d) to maintain high COD removal as well as take full advantage of treatment capacity of internal circulation anaerobic reactor. As for environmental conditions, temperature (32.2~39.5 ℃) and alkalinity (1 712.2~2 683.5 mgCaCO3/L) were in the optimum range while pH (7.5~7.9) was slightly higher than the optimum range. The insufficient influent pre-acidification degree and short hydraulic retention time were the main limiting factors for improving COD removal and could be solved via increasing hydraulic retention time of pre-acidification tank and internal circulation anaerobic reactor.

关 键 词：化学需氧量 挥发性脂肪酸 进水预酸化度 容积负荷 水力停留时间 

分 类 号：X793[环境科学与工程—环境工程]