Research And Improvement Study On "UASB" Technology Treating The Leachate Of Landfill Under Normal Temperature Conditions

The Up Flow Anaerobic Sludge Blanket Reactor (UPFLOW ANAEROBIC SLUDGE BLANKET, abbreviate UASB) is biological unit for wastewater treatment which utilize dense granulated sludge for disposing and processing the organs in the wastewater. In recent years, UASB is being popularized and developed constantly in the production practices of dealing with high density waste water. Now UASB biochemical unit used abroad and domestically operate normally at proper temperature between 30 and 35℃, so water must be heated in the place where it is cold before it come to use. UASB was used in the landfill yard of the rubbish and ooze and filtrate treatling with in middle period of the 1990s, in the South with high temperatures, the treatment result of UASB is better, the getting rid of rate of CODcr, BOD5 is more than 70%, but to the middle-Western and northern territory, because the difference in temperature is great in summer and winter, the bacterium with very strong activation reached winter to enter the dormancy state in summer, activation very low, UASB runs result to be relatively poor. A kind of method can make UASB strengthen and entered water to reach the anticipated treatment result without being heat? In order to study the utility and principle that adding the active charcoal to UASB to strengthen the waste water treatment craft under the normal atmospheric temperature , I make UASB models in order to do contrasting experimentThis text will systematic research and analyze UASB treatment landfill leachate workmanship on the basis of the thing that make models to do contrasting experiment live in Cisse landfill yard on the mountains of Huangshi. The beginning of the article will introduce the research current situation and progress of landfill leachate treatment, UASB workmanship of treatment technology, then , the strengthen and experiment of UASB. Being strengthen UASB treating landfill leachate is filtrate experiment of craft through two group experimental model to do contrasting-experimentation. UASB reactors, experiment of group is added particle active charcoal to throw, compare with group is not added the active charcoal , the experiment divides into three stages and goes on mainly: Namely the mud is tamed trains stage; The particle and mud form stage; Deal with the result and strengthen stage. The main parameter that care about the experiment includes: Time for thesludge granules form ,the diameter of sludge granules , reactor volume load afford to rise. According to the CODcr,BOD5 ,VFA of the outflow ,the comparative analysis of the comprehensive test data can draw the conclusions: Is it added particle form active charcoal can strengthen it to treatment function to throw among the reactor in UASB under the normal atmospheric temperature...