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          ICӦ

             

              ICinternal circulationӦһЧӦˮڷӦ¶ȾﱻϸˮӷӦϲ

          

              ص

              1ݻɸߣICӦŨȸ΢ҴѭЧˮлɿɳͨӦ3

              2ʡͶʺռIC Ӧݻʸ߳ͨUASB Ӧ3൱ͨӦ1/41/3 󽵵˷ӦĻͶICӦ߾ȺܴһΪ48ռ

              3ǿŨȷˮCOD=20003000mg/LʱӦѭɴˮ23 ŨȷˮCOD=1000015000mg/Lʱѭɴˮ1020ѭˮͽˮֻʹԭˮекʵõϡ󽵵˶̵Ӱ

              4ǿ¶ȶӰҪǶʵӰICӦںд΢¶ȶӰòͨICӦڳ2025 ½µʡ

              5лpHֵѭ൱ڵ1 ijˮCODתļpHֵ𻺳ʹӦpHֵ״̬ͬʱɼٽˮͶ

              6ڲԶѭӶͨӦĻͨⲿѹʵֵIC ӦΪĶʵֻҺѭǿѭʡ˶

              7ˮȶԺãöUASBּԲK s߲IJӰVan Lier[6]1994֤ӦּήͳˮVFAŨӳͣʱʹӦȶ

              8ڶ̣ICӦԸֳΪӦṩICӦһΪ12ͨUASBڳ46[7]

              9üֵߣӦȸCH4Ϊ70%80%CO2Ϊ20%30%лΪ1%5%Ϊȼϼ

          IC ӦǰֽҵӦý϶øֽԭϵֽҵ ICӦҲлŨȷˮ׵۷ˮˮơƷˮӹˮƾˮ

           

           

               IC (internal circulation) reactor is a new generation of highly efficient anaerobic reactor, wastewaterfrom bottom to top in the reactor flow, pollutants are bacterial adsorption and degradation, purifiedwater from the upper flow reactor out

           

                    Characteristic:

           

                    one, the high load capacity, high sludge concentration in the IC reactor, microbial biomass, and the presence of internal circulation, good mass transfer effect,influent organic load can be more than ordinary anaerobic reactor is more than 3 times.

                    two, save the investment and occupation area: IC reactor volumetric loading rate is higher than the ordinary UASB reactor 3 times, its volume is equivalent to the ordinary reactor 1/4 about 1/3,greatly reduce the capital investment of the reactor and IC reactor; big ratio of height to diameter(usually 4 - 8), so covers an area of less.

                   three strong capacity of resisting impact load: the treatment of low concentration wastewater(COD=2000 - 3000mg/L), reactor internal circulation flow up to the water intake amount of 2 - 3 times; the treatment of high concentration wastewater (COD=10000 - 15000mg/L), the internal circulation flow up to the amount of water 10 to 20 times. And the water are fully mixed a lot of circulating water, so that the harmful substances in the raw water are fully diluted greatly reduces the effects of toxicants on anaerobic digestion process.

                    four, anti low temperature capability: the effect of temperature on anaerobic digestion are a major influence on the rate of digestion. IC reactor because of containing a large number of microorganisms, the effect of temperature on anaerobic digestion is no longer significant andserious. Usually IC reactor for anaerobic digestion at ambient temperature (20 - 25 DEG C) under,this reduces the digestion insulation difficulties, saving energy.

                   five, has the ability to buffer the pH value: internal circulation flow is equivalent to first of the anaerobic zone of the effluent recycle, alkalinity can be transformed by COD, play a buffering role on pH value and pH value in the reactor to maintain the best condition, and can also reduce the amount of alkaliwater.

                    six, the internal automatic cycle, without external power: return of ordinary anaerobic reactor isrealized by external pressure, and IC reactor to self generated biogas as motivation to achievemixed liquid circulation, do not have to set the pump forced circulation, the power consumption is saved.

                   seven, the effluent stability: the use of two stage UASB series classification of anaerobic treatment, the adverse effects of high K s can generate compensation in the anaerobic process. Van Lier[6]proved in 1994, reactor grade will reduce the effluent VFA concentration, prolong the biologicalretention time, it makes the reaction stability.

                   eight, short start-up period: the sludge with high activity in the IC reactor, biological rapid proliferation,as the reactor starting-up provided favorable conditions. IC reactor start-up period is generally 1 to 2 months, while the ordinary UASB to start the cycle for 4 ~ 6 months [7].

                   nine, the use of high value: biogas reactor produced biogenic gas of high purity, CH4 was 70% ~ 80%,CO2 was 20% ~ 30%, other organic matter is 1% ~ 5%, can be used as fuel to use The IC reactor is widely used in papermaking industry is to use all kinds of waste paper as raw material papermaking enterprises; IC anaerobic reactor is also suitable for high concentration organic wastewater, such as, the wastewater of maize starch, citric acid wastewater, brewery wastewater, the potato processing wastewater, alcohol wastewater.

             

           

           

           

           

           
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