A study of the development in wastewater treatment system for marine environment conservation

1. (1) UAHB与两级接触曝气联合工艺处理难处理废水的研究探讨了UAHB反应器处理高硫氨发酵废水的颗粒化机理及处理特性。结果表明，在处理含硫和含氨废水的过程中，可形成颗粒，且未发生硫化物的抑制作用。因此，UAHB工艺处理难处理废水具有较好的稳定性。实验结果还表明，两段接触曝气工艺适合作为UAHB的后处理工艺。结果表明，UAHB + 2级接触曝气组合工艺是处理高硫氨发酵废水的最佳工艺体系。(2)采用两级接触曝气工艺处理高盐度废水的研究。采用两级接触曝气工艺处理含高盐度、高强度有机物的磺胺废水。结果表明，采用两段接触曝气工艺处理磺胺是可行的，负载速率限制在1.85 kg-TOC/m^3/day左右。(3)三级处理系统处理摄影废水的研究摄影废水中含有高浓度的各种有机和无机化学物质，这些化学物质不能被扣除到只有生物或化学方法才能处理的程度。我们提出了一个三级处理系统；首先对废水进行生物处理，然后进行化学处理，使剩余的难降解化学物质转化为可生物降解的化学物质，然后再次进行生物处理。本研究将臭氧应用于化学阶段，并讨论了该系统的去除效率。建立了去除照相废水中COD的基本实用工艺。海洋倾倒废弃物和废水对海洋环境影响的评价我们建立了以生物特别是鱼类和底栖生物为研究对象的浅海生态模型（SSEM）。利用该模型可以评价海洋倾倒废弃物和废水对海洋环境的影响。我们还讨论了濑户内海适当的营养负荷。在此基础上，根据濑户内海适宜的养分负荷，提出了减少养分负荷的对策。少

1. Establishment of biological treatments for marine dumping wastewater(1) A study of treating the refractory wastewater by combination process of UAHB and 2-stage contact aerationThe formation mechanism of granule and treatment characteristics were discussed in an Upflow Anaerobic Hybrid Blanket (UAHB) reactor treating fermentation wastewater consisting of high sulfide and ammonia. The results indicated that the granules could be developed in the process for treating sulfide- and a ammonia-rich wastwater, and inhibition caused by sulfide was not occurred. Therefore, the UAHB process was shown a better stability for treating the refractory wastewater. The experimental results also indicated that 2-stage contact aeration process was suitable as a post treatmen of UAHB.As the results, it could be conluded that the combination process of UAHB and 2-stage contact aeration was optimum system for treating a fermentation process wastewater consisting of high sulfide and ammonia.(2) A study of … More treating high salinity wastewater by 2-stage contact aeration process2-stage contact aeration process was used to treat sulfanilamide wastewater containing high salinity and high strength organic matter. The results indicated that sulfanilamide was able to treat by 2-stage contact aeration process, and the limitaton of loading rate was around 1.85 kg-TOC/m^3/day.(3) A study of treating photographic wastewater by three-stage treatment systemPhotographic wastewater bears high level of various organic and inorganic chemicals which can not be deducted to the extent permitted for disposal only with a biological or a chemical method. We proposed a three-stage treatment system ; the wastewater was treated biologically at first, then chemically to reform the remaining refractory chemicals biodegradable, and biologically again. In this study, ozone was applied to the chemical stage and the removal efficiency of the system was discussed. The basic and practical process for COD removal from photographic wastewater was established.2. Evaluation for the effect of marine environment by marine dumping waste and wastewaterWe developed the Shallow Sea Ecological Model (SSEM) that focuses on living organisms, especially fish and benthic organisms. It is possible to evaluate the effect of marine environment caused marine dumping waste and wastwater by using of this SSEM.We also discussed about the proper nutrient load for Seto inland sea. As the resuls of discussion, we proposed the countermeaeures to reduce nutrient loads considering the proper nutrient load for Seto inland sea. Less