【作者】 王志国；

【导师】 施卫东； 缪应祺；

【作者基本信息】 江苏大学 ， 环境工程， 2005， 硕士

【摘要】 本论文主要研究利用硫酸盐还原菌（sulfate reducing bacteria,简称SRB）处理含高浓度SO₄^2-的酸性钛白废水的可行性和工艺特点。试验采用了先进的ASBR（Anaerobic Sequencing Batch Reactor）技术,研究了厌氧条件下SRB的生活特性,研究了厌氧条件下ASBR法处理钛白废水的水力停留时间（HRT）、最适宜的温度、进水的COD和SO₄^2-的比值、反应器中pH值以及废水的搅拌方式对SO₄^2-还原效果的影响。同时研究了ASBR工艺的最佳运行工序。 试验取得了良好的效果,模拟废水和钛白废水的处理率分别达到了91.7%和88.3%,容积负荷最高分别达到了1.10KgSO₄^2-/m³·d和1.053KgSO₄^2-/m³·d。处理后出水硫酸盐浓度一般都在250mg/L以下,达到了GB 3838-88《地面水环境质量标准》的一类水排放要求。试验采用水循环带动气循j不的工作方式,有效的防止了硫化氢气体对硫酸盐还原菌的毒害作用,同时气体的循环又起到了对反应器中废水的搅拌作用。 经试验得出最佳运行参数为:HRT=24h、COD/SO₄^2-=2.4～2.8、反应器中最佳pH值7.1～8.2、间歇搅拌、温度T=35℃～37℃。 ASBR工艺的最佳运行工序为:进水0.5h,反应6.0h,沉淀1.0h,出水0.5h。同时,ASBR工艺也表现出很多的优点:污泥易颗粒化,耐冲击负荷,布水、操作比较简单,剩余污泥少等。 试验对钛白废水处理过程进行了动力学分析和研究,线性相关系数达到0.9835,可以认为线性相关性良好。更多还原

【Abstract】 In this discourse, we mostly study how the SRB dispose the wastewater which contains high consistency SO₄^2-.ASBR technics was applied in this experimentation. We researched the life property of SRB in anaerobic condition, the HRT of ASBR to dispose the acidity TiO₂, the most suitable growth temperature of SRB .At the same time, we researched the infection of COD/SO₄^2- ratio, the pH of wastewater and different experimentation temperature to the SO₄^2- deoxidization effect. At the same time, we researched the optimal function working procedure of ASBR.We acquire better results in this experimentation, the elimination ratios of simulation wastewater and TiO₂ achieve 91.7% and 88.3% respectively, the highest dimension load touches 1.10KgSO₄^2-/m³·d and 1.053KgSO₄^2-/m³·d. Wastewater can be let in the range of GB 3838-88, the disposal wastewater concentration less than 250mg/L. Using gas circulation to drive wastewater circulation is one strongpoint of this technology which can prevent H₂S poisoning SRB whisking the wastewater.Examination optimal function parameter: HRT=24h、 COD/ SO₄^2-=2.4².8、 optimal pH=7.1⁸.2、 intermission whisking, T=35℃³7℃.The optimal function working procedures: filling 0.5h, reaction 6.0h, deposition 1.0h, venting 0.5h. The technics traits: easily gains granular sludge, runs with high loading, operates simply and so on.Analyzing and researching kinetics in the phase of disposal TiO₂ shows that linearity correlation coefficient is 0.9835. It is can be considered that the linearity correlation character is good.更多还原