CAJ | 학술논문

为了考察单级SBR处理实际中期垃圾渗滤液深度脱氮的可行性，采用单级SBR在“厌氧/好氧/缺氧”（AOA）运行方式下处理实际中期垃圾渗滤液。试验发现，厌氧/好氧/缺氧交替运行下驯化的微生物能在厌氧段消耗胞内糖原，并将水中部分溶解性有机物以聚羟基脂肪酸酯(PHAs)形式储存；在好氧段微生物消耗胞内 PHAs，转化为胞内糖原，氨氧化的同时也伴随着同步硝化反硝化脱氮；好氧段氨氧化结束后贮存的碳源（PHAs 和糖原）能为后置缺氧反硝化提供碳源。经长期试验研究，进水COD、NH+4-N、TN浓度分别为6430～9372 mg·L?1、1025.6～1327 mg·L?1、1345.7～1853.9 mg·L?1，出水COD、NH+4-N、TN浓度能达到525～943 mg·L?1、1.2～4.2 mg·L?1、18.9～38.9 mg·L?1。在未投加外碳源的情况下，SBR法AOA运行方式下能够实现中期垃圾渗滤液的深度脱氮，出水TN<40 mg·L?1。其中，好氧段(DO<1 mg·L?1)通过同步硝化反硝化去除TN占总去除量的1/3左右；缺氧后置反硝化去除的TN占总去除量的2/3左右。
위료고찰단급SBR처리실제중기랄급삼려액심도탈담적가행성，채용단급SBR재“염양/호양/결양”（AOA）운행방식하처리실제중기랄급삼려액。시험발현，염양/호양/결양교체운행하순화적미생물능재염양단소모포내당원，병장수중부분용해성유궤물이취간기지방산지(PHAs)형식저존；재호양단미생물소모포내 PHAs，전화위포내당원，안양화적동시야반수착동보초화반초화탈담；호양단안양화결속후저존적탄원（PHAs 화당원）능위후치결양반초화제공탄원。경장기시험연구，진수COD、NH+4-N、TN농도분별위6430～9372 mg·L?1、1025.6～1327 mg·L?1、1345.7～1853.9 mg·L?1，출수COD、NH+4-N、TN농도능체도525～943 mg·L?1、1.2～4.2 mg·L?1、18.9～38.9 mg·L?1。재미투가외탄원적정황하，SBR법AOA운행방식하능구실현중기랄급삼려액적심도탈담，출수TN<40 mg·L?1。기중，호양단(DO<1 mg·L?1)통과동보초화반초화거제TN점총거제량적1/3좌우；결양후치반초화거제적TN점총거제량적2/3좌우。
The feasibility of using a single sequencing batch reactor to remove nitrogen from medium-age landfill leachate was examined, and an anaerobic/aerobic/anoxic process in a SBR without extra carbon source addition was presented. Dissolved organic matter could be taken up partially and stored as polyhydroxyalkanoates (PHAs) in the anaerobic stage by the microorganisms operated in the anaerobic/aerobic/anoxic process, with glycogen consumption. In the aerobic stage, ammonia was oxidized and accompanied by loss of tatal nitrogen (TN) via simultaneous nitrification and denitrification. The stored PHAs and glycogen, remaining at the end of aerobic stage could provide carbon source for anoxic denitrification. In the stable phase, the effluent COD, NH+4-N, and TN were 525—943 mg·L?1, 1.2—4.2 mg·L?1 and 18.9—38.9 mg·L?1 respectively when the influent COD, NH+4-N, and TN were 6430—9372 mg·L?1, 1025.6—1327 mg·L?1 and 1345.7—1853.9 mg·L?1, respectively. Nitrogen removal from medium-age landfill leachate could be realized via the anaerobic/aerobic/anoxic process in a SBR with the effluent of TN less than 40 mg·L?1. Almost 1/3 of reduced TN was removed via SND, while 2/3 of reduced TN was removed via post-anoxic denitrification.