好氧-缺氧一体化高效分离生物流化复合反应器

鉴于污水处理中对氮、磷去除率的要求和内循环三相生物流化床反应器存在的一些不足,为此,设计开发了一种好氧-缺氧一体化高效分离生物流化复合反应器。该反应器对好氧循环流化区采用了独特的分格结构,当反应器处理规模增大时,在不增加反应器总体高度的基础上,保证了循环流化区的高径比。循环流化反应器与高效气浮分离反应器的耦合,克服了循环流化床以沉淀原理为基础的固液分离效果不佳的状况,既可以保证出水水质,又可以实现反应器的一体化。通过气体提升方式实现了好氧出水回流,使该种反应器能够实现脱氮和部分除磷的目的。该反应器处理生活污水的初步试验结果表明它具有很好的抗冲击负荷和去除有机物的性能。

STUDY ON BIOLOGICAL FLUIDIZED REACTOR OF AEROBIC-ANOXIC INTEGRATED HIGH-EFFICIENCY SEPARATION

As the requirements of phosphorous removal and denitrification in wastewater treatment,and there are some shortcomings in inner circulated three-phase biological fluidized bed,we designed and developed a kind of biological fluidized reactor of aerobic-anoxic integrated high-efficiency separation(BRAIH).A kind of unique cellular structure is used in aerobic fluidized area of BRAIH.When volume of BRAIH is increased,and height of BRAIH is not added,height-diameter ratio of fluidized area(H/D) can be ensured.While solid and liquid separation based on sedimentation on inner circulated fluidized bed can not ensure water quality of effluent,coupling of circulated fluidized reactor and high-efficiency air floatation can reduce suspended solid(SS) of effluent.Aerobic area and anoxic area are together in BRAIH,and through air lifting can realize backflow of aerobic area effluent,so BRAIH can achieve denitrification and part phosphorous removal.By treatment of municipal wastewater,it is proved that BRAIH can effectively resist impact load and remove organic substance.