【作者】 于海兰；

【导师】 付永胜； 陈攀江；

【作者基本信息】 西南交通大学 ， 环境工程， 2007， 硕士

【摘要】 目前我国的水污染十分严重，高浓度硫酸盐废水就是一种重要的组成部分，该类废水容易造成水体的pH值降低、土壤变酸、严重影响周边的生态环境。因此，寻找行之有效的硫酸盐废水处理工艺早已成为环境工程界普遍关注的问题。抗生素类药品是目前应用最为广泛的药物之一，在其生产过程中所产生的废水具有COD浓度高、色度及味度大、硫酸盐浓度高、难于生物降解等特点，是一种典型的含硫酸盐高浓度有机废水。高浓度的有机废水很适合于厌氧生物处理，但是当废水中还含有高浓度的硫酸盐时，废水中高浓度硫酸盐会对废水的厌氧生物处理产生抑制作用，大量的硫酸盐在废水的厌氧生物处理过程中被SRB（硫酸盐还原菌）还原为硫化氢后，就会对MPB（产甲烷菌）产生毒害（或）抑制作用，这将使得厌氧生物处理难以顺利进行。本文就是通过对四川制药（彭州）有限公司的抗生素制药废水进行跟踪监测，在上流式厌氧污泥反应器（UASB）中对影响硫酸盐厌氧还原的几个重要因素—预处理、PH、温度、COD／SO₄^2-比、SO₄^2-浓度、硫化物、SRB与MPB初始数量比等等进行了较细致调整和选取，利用现场废水，获取了有关的硫酸盐还原效率的变化规律，寻找该类废水脱硫的最佳运行条件和参数：温度保持在（35±1）℃范围，pH控制在7.2左右，COD／SO₄^2-比值控制在5以上，COD进水浓度控制在6000-8000mg／L，硫酸盐进水浓度低于1800mg／L时，通过预处理-UASB-SBR组合工艺处理后，污水站排放口的COD＜300mg／L，达到了《污水综合排放标准》中的二级标准。最后本文还着重探讨了厌氧动力学方面的问题，并在此基础上建立了一个含硫酸盐厌氧降解动力学模型，并且运用模型解释了一些实际污染治理过程中所遇到的和可能遇到的问题。更多还原

【Abstract】 Currently water pollution is extremely serious in China. High concentration sulfate Wastewater, one of the sewage constituents, can lead to the water body lower pH value, acid soil, thus bringing damage to surrounding ecologic environment. Consequently it has long before been a hot topic among environmental engineers to search for an effective sulfate Wastewater disposal technique.Antibiotics, the most widely clinically applied medicine, brings along typical sulfate high concentration organic Wastewater during the course of production. This Wastewater is notorious for its high concentration of COD, high degree of chroma and gestation, high sulfate concentration, and being not biodegradable.High concentration organic Wastewater is suitable for anaerobic biological treatment. However, once the Wastewater contains high concentration sulfate, the sulfate will inhibit anaerobic biological treatment of Wastewater. Yet H₂S, deoxidized by Sulfate Reducing Bacteria （SRB） from abundant sulfate in the Wastewater during anaerobic biological treatment, will inhibit and/or poison Methane Producing Bacteria （MPB） , which obstructs anaerobic biological treatment.The present study traced and monitored the antibiotic Wastewater from Sichuan Pharmacy （Pengzhou） Co. Ltd. The researcher carefully selected and finely tuned some crucial factors in an Up-flow Anaerobic Sludge Bed （UASB）, i.e. pretreatment, pH value, temperature, COD/ SO₄^2- ratio, SO₄^2- concentration, sulfate and SRB and MPB’s initial quantity, and obtained the variation rules related with sulfate reduction efficiency from the Wastewater on the spot, in search for an optimal conditions and parameters of this Wastewater. After UASB-SBR pretreatment while controlling the temperature at （35±1）℃, pH value about 7.2, COD/SO₄² ratio above 5, COD concentration between 6000-8000 mg/L and infall sulfate concentration lower than 1800mg/L, COD concentration arrived at less than 300mg/L at sewage plant exit, thus reached the second class of （（Comprehensive Sewage Discharge Standard））. Finally this paper emphasizes discussion on anaerobic digestion dynamics, based on which a sulfate anaerobic dynamics model is established, which is applied in explanation of some problems that we encountered and may encounter in the process of practical sewage treatment.更多还原