环境工程学报
環境工程學報
배경공정학보
CHINESE JOURNAL OF ENVIRONMENTAL ENGINEERING
2010年
4期
795-800
,共6页
吉芳英%左宁%黄力彦%宗述安
吉芳英%左寧%黃力彥%宗述安
길방영%좌저%황력언%종술안
除磷脱氮%污泥减量%水解酸化%生物相分离%污泥产率
除燐脫氮%汙泥減量%水解痠化%生物相分離%汙泥產率
제린탈담%오니감량%수해산화%생물상분리%오니산솔
phosphorous and nitrogen removal%sludge reduction%hydrolysis-acidification%biofacies separation%sludge yield
生物处理单元采用水解酸化、多级串联接触曝气、连续流的除磷脱氮A~2/O工艺,并辅以外排厌氧富磷污水侧流除磷,开发了一个新型的具有强化除磷脱氮功能的污泥减量HA-A/A-MCO工艺.用该工艺处理校园生活污水发现,在SRT 60 d、进水COD 316～407mg/L、NH_4~+ -N 30～40 mg/L、TN 35 ～53 mg/L、TP 8～12 mg/L的条件下,出水COD≤18 mg/L、NH_4~+ -N≤2.1 mg/L、TN≤10.3 mg/L、TP≤0.44 mg/L.研究还发现,水解酸化池处理产生的VFA能有效促进生物除磷脱氮,导致厌氧释磷量达57 mg/L.进入化学除磷池的侧流液量仅相当于进水量的13%;系统最主要的脱氮形式是SND和缺氧反硝化,SND脱氮占脱氮总量的50%,缺氧反硝化占26%;HA-A/A-MCO系统有效实现了生物相分离,并利用生物捕食作用获得较低的污泥产率,0.1 g MLSS/g COD.
生物處理單元採用水解痠化、多級串聯接觸曝氣、連續流的除燐脫氮A~2/O工藝,併輔以外排厭氧富燐汙水側流除燐,開髮瞭一箇新型的具有彊化除燐脫氮功能的汙泥減量HA-A/A-MCO工藝.用該工藝處理校園生活汙水髮現,在SRT 60 d、進水COD 316～407mg/L、NH_4~+ -N 30～40 mg/L、TN 35 ～53 mg/L、TP 8～12 mg/L的條件下,齣水COD≤18 mg/L、NH_4~+ -N≤2.1 mg/L、TN≤10.3 mg/L、TP≤0.44 mg/L.研究還髮現,水解痠化池處理產生的VFA能有效促進生物除燐脫氮,導緻厭氧釋燐量達57 mg/L.進入化學除燐池的側流液量僅相噹于進水量的13%;繫統最主要的脫氮形式是SND和缺氧反硝化,SND脫氮佔脫氮總量的50%,缺氧反硝化佔26%;HA-A/A-MCO繫統有效實現瞭生物相分離,併利用生物捕食作用穫得較低的汙泥產率,0.1 g MLSS/g COD.
생물처리단원채용수해산화、다급천련접촉폭기、련속류적제린탈담A~2/O공예,병보이외배염양부린오수측류제린,개발료일개신형적구유강화제린탈담공능적오니감량HA-A/A-MCO공예.용해공예처리교완생활오수발현,재SRT 60 d、진수COD 316～407mg/L、NH_4~+ -N 30～40 mg/L、TN 35 ～53 mg/L、TP 8～12 mg/L적조건하,출수COD≤18 mg/L、NH_4~+ -N≤2.1 mg/L、TN≤10.3 mg/L、TP≤0.44 mg/L.연구환발현,수해산화지처리산생적VFA능유효촉진생물제린탈담,도치염양석린량체57 mg/L.진입화학제린지적측류액량부상당우진수량적13%;계통최주요적탈담형식시SND화결양반초화,SND탈담점탈담총량적50%,결양반초화점26%;HA-A/A-MCO계통유효실현료생물상분리,병이용생물포식작용획득교저적오니산솔,0.1 g MLSS/g COD.
An advanced process combining sludge reduction and phosphorous and nitrogen removal is developed, for short, HA-A/A-MCO process, whose biological treatment unit is hydrolysis-acidification, muhistep continuous oxic tank, and continuous flow A~2/O process coupled with side stream phosphorous removal by draining out anaerobic phosphorous accumulating sewage. Test results of the process treating campus wastewater show that under the condition of SRT 60 d, the influent COD 316 ～ 407 rag/L, NH_4~+ -N 30 ～ 40 mg/L, TN 35 ～ 53 mg/L, TP 6 ～ 9 mg/L, the effluent COD, NH_4~+ -N, TN and TP are equal to or less than 18 mg/L, 2. 1 mg/L,10.3 mg/L, 0. 44 mg/L, respectively. VFA from hydrolysis-acidification process can improve phosphorous and nitrogen removal effectively, which can induce phosphorous content from anaerobic release reaching 57 mg/L and can make the amount of sidestream phosphorous removal sewage flowing into chemical phosphorous removal tank be just 13 % of influent flow. Nitrogen removal is realized by simultaneous nitrification and denitrification (SND)and denitrification, which account for 50% and 26% of the total nitrogen removal respectively. Moreover, biofacies separation is realized in HA-A/A-MCO process, and lower sludge yield which is 0.1 g MLSS/g COD can be achieved by utilizing biological predation.
