UASB与CASS联用处理豆制品废水工艺设计
发布时间：2019-02-23 10:14
【摘要】：豆制品废水是一种高浓度有机废水,其处理较为复杂,达标处理难度大,且治理费用往往偏高。寻求一种合理有效、运行管理费用较低的处理工艺,对于环保事业和豆制品行业的发展都具有十分重要的意义。本研究针对河北某豆制品厂所排废水的达标处理展开。通过仔细调研相关资料,详细分析豆制品废水的水质特征,综合对比前人对豆制品废水处理采用的相关技术及处理工艺,并结合该厂具体规模实力与排放情况,初步确定“沉淀—A/O(UASB与CASS联用)”的处理工艺。针对该豆制品厂所排废水进行了试验研究与设计,从阴离子聚丙烯酰胺(APAM)、阳离子聚丙烯酰胺(CPAM)、聚丙烯酸钠(PAAS)、聚合氯化铝(PAC)四种絮凝剂中筛选出处理效果最佳的絮凝剂为聚丙烯酸钠,确定了其最佳投加量为质量分数为0.1%时15.5l/(1L废水),其COD去除率可达32.5%。通过实验室模拟该“沉淀—A/O”工艺流程对该厂所排废水进行处理试验,验证了该工艺设计确实可行。根据相关的各种设计规范与标准,依据进行各个工艺环节构筑物的具体参数计算设计。设计废水处理量为600t/d。调节池设计为8.0×5.0×3.0的矩形,水力停留时间为4.8h;沉淀池设计为10.8×2.3×2.3的类似矩形形状,长宽比为4.70≥4,沉淀时间为1.5h;UASB反应器设计为Φ7.2×8.89的圆柱体,高径比为1.231,水力停留时间为14h;CASS池设计为13.4×5×5的矩形结构,曝气时间3.7h,沉淀时间1.7h,水力停留时间为6h。设计整套工艺COD总去除率达98.5%左右。最终实体工程运行排水水质检测报告表明出水满足《农田灌溉水质标准》,从而证实了本工艺设计的良好效果。
[Abstract]:Soybean product wastewater is a kind of high concentration organic wastewater, which is complex to treat, difficult to reach the standard, and the treatment cost is often on the high side. It is of great significance for the development of environmental protection and soybean products industry to seek a reasonable and effective treatment process with low operating and management costs. This study was aimed at the standard treatment of wastewater from a soybean factory in Hebei province. Through careful investigation of relevant data, the water quality characteristics of soybean products wastewater are analyzed in detail, and the related technologies and treatment processes adopted by previous people for the treatment of soybean products wastewater are comprehensively compared, and combined with the concrete scale strength and discharge situation of the plant, The treatment process of precipitation-A / O (UASB and CASS) was preliminarily determined. The waste water from the soybean products factory was studied and designed. The anion polyacrylamide (APAM), cationic polyacrylamide (CPAM), sodium polyacrylate (PAAS),) was used in this paper. The best flocculant of polyaluminium chloride (PAC) is sodium polyacrylate. The best dosage is 15.5l/ (1L wastewater) when the mass fraction is 0.1. The removal rate of COD can reach 32.5%. Through the laboratory simulation of the "precipitation-A / O" process, the treatment test of the wastewater discharged from the plant is carried out, and the feasibility of the process design is verified. According to the relevant design specifications and standards, according to the specific parameters of each process of the structure calculation design. The design wastewater treatment capacity is 600 t / d. The design of the regulating tank is 8.0 脳 5.0 脳 3.0 rectangular, the HRT is 4.8 h, the sedimentation tank is 10.8 脳 2.3 脳 2.3 similar rectangular shape, the aspect ratio is 4.70 鈮，
本文编号：2428722
[Abstract]:Soybean product wastewater is a kind of high concentration organic wastewater, which is complex to treat, difficult to reach the standard, and the treatment cost is often on the high side. It is of great significance for the development of environmental protection and soybean products industry to seek a reasonable and effective treatment process with low operating and management costs. This study was aimed at the standard treatment of wastewater from a soybean factory in Hebei province. Through careful investigation of relevant data, the water quality characteristics of soybean products wastewater are analyzed in detail, and the related technologies and treatment processes adopted by previous people for the treatment of soybean products wastewater are comprehensively compared, and combined with the concrete scale strength and discharge situation of the plant, The treatment process of precipitation-A / O (UASB and CASS) was preliminarily determined. The waste water from the soybean products factory was studied and designed. The anion polyacrylamide (APAM), cationic polyacrylamide (CPAM), sodium polyacrylate (PAAS),) was used in this paper. The best flocculant of polyaluminium chloride (PAC) is sodium polyacrylate. The best dosage is 15.5l/ (1L wastewater) when the mass fraction is 0.1. The removal rate of COD can reach 32.5%. Through the laboratory simulation of the "precipitation-A / O" process, the treatment test of the wastewater discharged from the plant is carried out, and the feasibility of the process design is verified. According to the relevant design specifications and standards, according to the specific parameters of each process of the structure calculation design. The design wastewater treatment capacity is 600 t / d. The design of the regulating tank is 8.0 脳 5.0 脳 3.0 rectangular, the HRT is 4.8 h, the sedimentation tank is 10.8 脳 2.3 脳 2.3 similar rectangular shape, the aspect ratio is 4.70 鈮，
本文编号：2428722
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