Study on Development and Practical Use of Small Scale Water Treatment

1)小型生活污水处理厂的开发：生活污水处理厂由沉淀池（1）、厌氧生物膜池（2）、好氧生物膜池组成，可容纳5人或10人，运行2年。该工厂的显著点是这些池中的流速均衡以及冲洗厕所废水（FTW）和灰废水（GW）的分开注入，其中FTW流入（1），GW流入（2）。2）高盐、高有机物废水的处理：通过大量的试养试验，明确了废水稀释后的二级生物膜反应器工艺对高盐、高有机物废水的处理是有效的。提出了该工艺的设计和运行指导原则。3）UASB工艺与生物膜工艺相结合的新工艺开发。上流式反应器下部采用UASB工艺 ...更多信息 上部采用生物膜法。对人工废水的基础实验和食品加工废水的应用实验进行了研究。经过3个月的培养，得到了良好的UASB颗粒和良好的甲烷发酵效果。4）完全混合式生物反应器脱氮。从溶解氧和有机质含量的关系出发，研究了亚硝酸盐直接转化为氮气的过程。通过控制溶解氧和有机物浓度，通过亚硝酸盐的反硝化作用，得到反应器的有效脱氮率。5）照相冲洗废水的处理。采用一级生物处理、臭氧化、二级生物处理三级工艺处理照相冲洗废水。在这一年中，研究了在臭氧化步骤中生物可降解物质的形成，因为该步骤对于下一次生物处理是有效的。明确了该步骤中形成生物可降解物质的操作条件。少

1)Development of Small Size Domestic Sewage Treatment Plant : Domestic sewage treatment plant consisted from sedimentation tank(1), anaerobic biofilm tank(2) and aerobic biofilm tank for 5 or 10 persons were operated for 2 years. Remarkable points of this plant are equalization of flow rate in these tanks and separated injection of flush toilet wastewater(FTW) and gray wastewater(GW), where FTW is inflowed into (1) and GWis inflowed into (2 ). From this experiment, a guide-line of the design and the operation is obtained.2)High Salt and High Organic Matter Contents Wastewater Treatment : From many trial cultural experiments, it is cleared that 2 Step Bio-film reactor process after dilution of the wastewater is effective for high salt and high organic matter contents wastewater Treatment. A guide-line of the design and the operation for this process is obtained.3)Development of a new process combined UASB process and biofilm process. : A upflow reactor with UASB Process in the lower par … More t and biofilm process in the upper part. A fundamental experiment with artificial wastewater and an applied experiment for food processing wastewater experiment are studied. After 3 month culture, good UASB granules and good methane fermentation result are obtain.4)Nitrogen removal in a complete mixing bioreactor. : Transform process into nitrogen gas from nitrite directly is studied from relation to DO and organic matter levels. The effective nitrogen removal rate in the reactor is obtained as denitrification from nitrite under control of DO and organic matters level.5)Photographic processing wastewater treatment. : 3 stage process of first biological treatment step, ozonization step and second biological treatment step is applied forphotographic processing wastewater treatment. In this year, formation of biodegradable matters in the ozonization step is studied because this step is effective for next second biological treatment. The operational condition for formation of biodegradable matters in the step is cleared. Less