进水方式对SBR工艺中活性污泥性能的影响  

Influence of Different Feeding Patterns on Activated Sludge System in SBR Process

作　　者：于振波[1] 彭永臻[1,2] 彭赵旭[1] 刘旭亮[1] 柴同志[1] 

机构地区：[1]哈尔滨工业大学城市水资源与水环境国家重点实验室,黑龙江哈尔滨150090 [2]北京工业大学环境与能源学院,北京100124

出　　处：《中国给水排水》2011年第17期6-9,共4页China Water & Wastewater

基　　金："十一五"国家科技支撑计划重点项目(2009BAC57B01)

摘　　要：采用2个序批式反应器(SBR)进行平行试验,考察了在曝气量相同的条件下,两种极端进水方式(全程连续、瞬时脉冲)对SBR系统污泥沉降性、絮体形态、出水水质和脱氮除磷特性的影响。结果表明,瞬时脉冲进水系统发生了非丝状菌膨胀,全程连续进水系统发生了丝状菌膨胀。相比于全程连续进水系统,瞬时脉冲进水系统具有更高的平均溶解氧浓度,而且出水水质更好。各系统均出现了较明显的同步硝化反硝化(SND)现象,瞬时脉冲进水系统对总氮的去除率约为52.56%,全程连续进水系统对总氮的去除率则高达85.92%。在前期未设置厌氧段的情况下,瞬时脉冲进水系统发生了明显的释磷现象,其比释磷量达13.74 mgPO43--P/gMLSS,全程连续进水系统的仅为0.43 mgPO43--P/gMLSS。In order to study the influence of different feeding patterns on activated sludge system, two sequencing batch reactors （SBR） were operated in parallel under two extreme feeding patterns （fully continuous feeding and instantaneous pulse feeding）. The effects on sludge settleability, floc morphology, effluent quality, nitrogen and phosphorus removal characteristics were investigated. The results show that non-filamentous sludge bulking occurs in instantaneous pulse feeding system, and filamentous sludge bulking occurs in fully continuous feeding system. Compared with the fully continuous feeding system, the instantaneous pulse feeding system has higher average dissolved oxygen concentration and better effluent quality. The simultaneous nitrification and denitrification is found in each system. Total nitrogen removal rate is about 52.56% in the instantaneous pulse feeding system and up to 85.92% in the fully continuous feeding system. Without anaerobic zone, obvious phosphorus release phenomenon happens in the instantaneous pulse feeding system. Specific phosphorus release rate is up to 13.74 mgPO4^3 - P/ gMLSS in the instantaneous pulse feeding system while it is only 0.43 mgPO4^3- P/gMLSS in the fully continuous feeding system.

关 键 词：SBR 进水方式 污泥膨胀 脱氮除磷 同步硝化反硝化 

分 类 号：X703[环境科学与工程—环境工程]