江苏理工学院学报
江囌理工學院學報
강소리공학원학보
Journal of Jiangsu Teachers University of Technology
2014年
4期
41-46
,共6页
A+A2/O工艺%预缺氧处理%厌氧氨氧化%脱氮除磷
A+A2/O工藝%預缺氧處理%厭氧氨氧化%脫氮除燐
A+A2/O공예%예결양처리%염양안양화%탈담제린
A +A2/O Process%pre -anoxic treatment%anaerobic ammonium oxidation%nitrogen and phos-phorus removal
增强的A＋A2/O工艺是城镇污水厂普遍采用的脱氮除磷工艺。为研究预缺氧池对增强的A＋A2/O工艺的脱氮除磷的作用效果，分别对稳定运行中A＋A2/O工艺中预缺氧池进、出水中的氮、磷含量进行分析。预缺氧池对TN、NH4＋-N的去除率分别达到62．63％和37．05％，分别占整个A＋A2/O工艺系统去除率的90.52％和37．95％。通过对预缺氧池氮元素进行物料平衡计算，预缺氧池中TN的减少量9．27mg/L近似等于NH4＋-N和NO3--N去除总量9．07mg/L。实验结果表明，前置预缺氧池发生了厌氧氨氧化作用，能够强化系统脱氮。此外，系统中总TP去除率达92．66％，表明前置预缺氧池能促进厌氧池的厌氧释磷，提高去除率。
增彊的A＋A2/O工藝是城鎮汙水廠普遍採用的脫氮除燐工藝。為研究預缺氧池對增彊的A＋A2/O工藝的脫氮除燐的作用效果，分彆對穩定運行中A＋A2/O工藝中預缺氧池進、齣水中的氮、燐含量進行分析。預缺氧池對TN、NH4＋-N的去除率分彆達到62．63％和37．05％，分彆佔整箇A＋A2/O工藝繫統去除率的90.52％和37．95％。通過對預缺氧池氮元素進行物料平衡計算，預缺氧池中TN的減少量9．27mg/L近似等于NH4＋-N和NO3--N去除總量9．07mg/L。實驗結果錶明，前置預缺氧池髮生瞭厭氧氨氧化作用，能夠彊化繫統脫氮。此外，繫統中總TP去除率達92．66％，錶明前置預缺氧池能促進厭氧池的厭氧釋燐，提高去除率。
증강적A＋A2/O공예시성진오수엄보편채용적탈담제린공예。위연구예결양지대증강적A＋A2/O공예적탈담제린적작용효과，분별대은정운행중A＋A2/O공예중예결양지진、출수중적담、린함량진행분석。예결양지대TN、NH4＋-N적거제솔분별체도62．63％화37．05％，분별점정개A＋A2/O공예계통거제솔적90.52％화37．95％。통과대예결양지담원소진행물료평형계산，예결양지중TN적감소량9．27mg/L근사등우NH4＋-N화NO3--N거제총량9．07mg/L。실험결과표명，전치예결양지발생료염양안양화작용，능구강화계통탈담。차외，계통중총TP거제솔체92．66％，표명전치예결양지능촉진염양지적염양석린，제고거제솔。
The combined processes of pre-anoxic and following anaerobic-anoxic-oxygnic treatment( A+A2/O) was commonly used in urban wastewater treatment plants to remove nitrogen and phosphorus in the wastewater.In order to investigate the influence of pre-anoxic tank on the removal of nitrogen and phosphor-us in enhanced A+A2/O process,contents of nitrogen and phosphorus in influent and effluent of pre-anoxic tank and entire process were analyzed.The TN and NH4+-N levels were reduced by 62.63%and 37.05%in the pre-anoxic tank,which contributed 90.52% and 37.95% removal to the entire A+A2/O process,re-spectively.By the calculating nitrogen equilibrium in the pre -anoxic tank, the TN level decreased by 9.27mg/L,which was similar to the sum of NH4+-N and NO3--N removal of 9.07mg/L.The results showed that the effect of anaerobic ammonium oxidation was occurred in the pre-anoxic tank, which have enhanced nitrogen removal in the entire processes.The total TP removal rate was 92.66%in entire A+A2/O processes,which suggested that pre -anoxic phase treatment can promote phosphorus release in anaerobic treatment tank and improved phosphorus removal.
