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The height of a single artificial simulation for the current domestic and international aerobic granular sludge mostly stay in the laboratory scale , influent composition with water , the reactor height to diameter is relatively large . The test influent from a hydroxyethyl cellulose production plant anaerobic stage effluent , return sludge aerobic carrier fluidized bed process for the inoculation sludge , activated sludge sequencing batch reactor R1 and R2 two groups simultaneously aerobic granular sludge cultivation and pollutant removal performance . Featured content and the results are as follows : 1.R1 effective volume of 80L, the height to diameter ratio of 4 , flow 160L / d ; R2 effective volume of 600L , the H / D 4 , flow 1.2m7d , . R1, R2 reactor operating simultaneously in the same influent water quality , the organic load 4kg/m3 d . R1 particle size greater than 0.1 mm fine granular sludge running 14 days to appear granular sludge 0.3mmm about 26 days , 50 days after the granular sludge reactor running into the aerobic granular sludge maturity , maturity particle diameter larger than 0.1 mm after the particle diameter is greater than 0.25mm granular sludge accounted for 90% of the mass fraction of all sludge reactor , wherein the particle size of 1.0 ~ 1.5mm granular sludge mass fraction of 42 % ; R2 in the first 37 days appears the fine particles of sludge, 74 days appears granular sludge around the particle diameter of 0.3mm and R2 reactor was run for 130 days after the mature stage , particle size of greater than 0.25mm granular sludge mass fraction of 88% , wherein the particle size of 0.5 ~ 1.0mm . The granular sludge mass fraction of 42% . 2 during operation of the whole reactor , R1 and R1 MLSS with the run-time changes . R1 in the first 15 days MLSS from initial 4410mg / L to 3080mg / L, and then began to rise slowly restored to 4290mg / l in the first 51 days , MLSS . R2 MLSS in the first 50 days from the initial 4560mg / L to 2780mg / L, and the recovery in the first 138 days to 3860mg / L ; R1 within SWI30 in the entire operational phase from the initial state 124 mL / g in 50 world reduced to 44 mL / g, followed by stabilizing. The initial value in R2 SVI30 129.6mL / g, average fell to 66 mL / g in the reactor is run after 4 months . Aerobic granular sludge 3.R1 within the mature stage of COD removal efficiency of NH3 -N were 81% and 71 % , R2, respectively, 74% and 65% .
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