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This test using A、B two sets of Opposite Folded Plate Anaerobic Reactor operational modes of urban sewage treatment effect for research.Early water test was finished in jilin architectural engineering college laboratory. Two sets of reactor in the unrecycling (A reactor) and inner recycling (B reactor) working conditions of the hydraulic characteristics were studied.A、B two sets of reactor, the basic flow pattern are pushing flow pattern, and as HRT shortened, average residence time close theory retention time. When HRT for 6h and, when apprORPiate reflux ratio will reduce the reactor dead zone rate, and when the reflux ratio for 150% of reactor dead zone, the lowest rate, But when the reflux ratio reaches 200%, reactor dead zone rate increased, analyzed that is too fast rising velocity cause within reactor local appear channel flow caused by. Early water test in jilin architectural engineering college laboratory in finish. Two sets of reactor in the backflow (A reactor) and inner loop reactor backflow (B) working conditions of the hydraulic characteristics were studied.Late field test site in The south city of changchun sewage treatment plant, test water from fine grille later.A、B two sets of reactor differently startup, A reactor HRT by long to short, B reactor by short as long. The finding A reactor achieve stable operation condition than B reactor is short term 21d, and more stable. When HRT 6h,7h for when the treatment effect were well and the effluent CODCr concentration minimum can achieve 65mg/L, average in 83.21 mg/L, average removal rate for 72%, reason for stable set HRT= 6h operating conditions.Test of two sets of reactor on the CODCr removal with water temperature rise gradually rise, but its small scale. So in system operation process, water temperature elements not as the main influencing factors. ABR reactor on sewage nitrogen phosphorus removal of the effect is not ideal, can appear even a negative value. Reason should be used with other processing unit series, while ensuring CODCr removal efficiency and get nitrogen phosphorus effect. Test for reactor inner recycling make comparison, discover when# 2 and# 3 isolation between the Chambers reflux ratio for 150%, B reactor than A reactor CODCr treatment effect and high 7%, more stable. When the reflux ratio than 200%, B reactor CODCr treatment efficiency become low, when the reflux ratio for 300%, B reactor CODCr removal rate only 47%. In reflux test stage no sludge erosion phenomenon to appear, so the removal rate reduced to reactor within reactor partial velocity is exorbitant, mass transfer efficiency decreases be caused by.
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