【作者】 蔡琦；

【导师】 李捷；

【作者基本信息】 青岛理工大学 ， 环境工程， 2008， 硕士

【摘要】 +海产品加工产业在沿海城市日益发展。加工过程中,为节约淡水资源,可以使用海水代替淡水,因此而导致其废水含盐量很高。含海水的海产品加工废水属于难处理的高盐有机废水。因而,寻找一种切实可行的最经济有效的工艺,来处理高盐度有机废水,并确定其运行参数显得很有必要。光合细菌以其广泛适应性成为近年来污水处理中的常用方法,从海水中分离培养的光合细菌具有很高的耐盐性。本论文研究了光合细菌配合UASB工艺处理高盐度有机废水的可行性。按12%,24%,36%,48%,60%海水比例的梯度逐步提高进行驯化运行试验,并探讨了盐度对有机物降解的影响,确定了该处理系统的运行参数。实验结果:（1）根据正交试验结果选定适于光合细菌X1菌株生长的培养基最佳组成为NH₄Cl 0.1g,CH₃COONa 3.5g,MgCL₂ 0.1g,CaCl₂ 0.1g,KH₂PO₄ 9.6g,K₂HPO₄ 0.4g,酵母膏0.1g,琼脂20g,蒸馏水1000毫升。（2）不同海水比例对有机物降解的影响在相同水力停留时间条件下,随着海水比例的增加,有机物去除率逐渐降低。（3）水力停留时间对有机物降解的影响COD浓度随水力停留时间的延长而降低;COD去除率却随水力停留时间的延长而升高。12%,24%海水比例的生活污反应系统最佳水力停留时间为4h;36%,48%海水比例的生活污水反应系统最佳水力停留时间为6h。该系统处理含60%海水比例以上的生活污水（Cl^-浓度为11g/L以上）是不可行的。在HRT为24h条件下,其平均填料负荷为0.58kgCOD/m³·d。试验结果表明光合细菌的耐盐性弥补了UASB工艺处理高盐度有机废水过程中微生物受冲击难以形成颗粒污泥的问题,具有一定的可行性。更多还原

【Abstract】 The marine products industry develops rapidly in seaside regions.Dring the treamment processing of marine products,to save freshwater,seawater could be used to take the place of freshwater,which leads to producing high-salinity wastewater.It is well known that the wastewater of processing marine products including seawater is one of the difficult problem on organic wastewater treatment.Therefore,looking for a viable economic and effective method to deal with high-salinity organic wastewater, and determine its operating parameters shoud be necessary and in practical.In recent years,Photosynthetic bacteria with its wide adaptability commonly used in sewage treatment,photosynthetic bacteria which isolated from the sea have a high salt tolerance.In this paper,the Photosynthetic bacteria with UASB Process treatment of high-salinity organic wastewater was studied.With the increasing of concentration of seawater proportion gradually（from12%to 60%）,the gradient acclimatized were tested to explore the effect of salinity on the degradation of organic matter,and to determine the biological contact oxidation system operating parameters.Based on the experiments,the main conclusion are drawed as below:（1） According to orthogonal test results selected X1 photosynthetic bacteria strains suitable for the growth of the best medium for the composition of NH₄CL 0.1 g, CH₃COONa 3.5g,MgCL₂ 0.1g,CaCL₂ 0.1g,KH₂PO₄ 0.6g,K₂HPO₄ 0.4g,Yeast extract 0.1g,Agar 20g,Distilled Water 1000ml。（2） The proportion of different seawater influences on the degradation of organic matter.In the same conditions,with the increase in the proportion of seawater,organics removal rate decreased gradually.（3） Hydraulic retention time influences on the degradation of organic matter.COD Concentration reduces with the extension of HRT;COD removal rate increases following the extension of HRT.12%,24%proportion of the seawater sewage biological contact oxidation pond’ best HRT is 4 hours.36%,48%proportion of the seawater sewage biological contact oxidation pond HRT is the best time to 6 hours.One-stage biological contact oxidation process dealing to domestic sewage （above Cl-concentration of 11g/L）containing above the proportion of 60%seawater is not feasible.HRT for 24 hours in conditions,the average load of filler is 0.58kgCOD/m³·d.The experimental results show that the salt tolerance of photosynthetic bacteria,made up UASB technology with high salinity in the process of microbial organic wastewater impact it is difficult to form granular sludge problems,have some feasibility.更多还原