摘要
为了考察氮磷同时缺乏对活性污泥系统的影响,采用2个序批式间歇反应器(SBR),按照缺氧/好氧的方式平行运行,通过调节不同的进水COD/N/P比,考察了氮磷同时缺乏状态下活性污泥系统的污泥沉降性、絮体形态、出水水质以及比耗氧速率等方面的表现。结果表明,在氮磷同时缺乏时,当进水COD/N/P比为100/2/0.4时,活性污泥系统会发生丝状菌膨胀,而当进水COD/N/P为100/0.5/0.1时,污泥沉降性保持良好;各反应器的活性污泥浓度均在逐渐地下降,MLSS由约2200mg/L下降至1800mg/L以下;各反应器的比耗氧速率均呈现逐渐上升的趋势,COD的去除率呈现逐渐下降的趋势。
In order to study the influence of N and P synchronous deficiency on activated sludge system,2 sequencing batch reactors （SBR） were operated with an anoxic-oxic pattern in parallel under different degree of nitrogen and phosphorus Deficiency. The effects on sludge settleability,flocculate structure, effluent quality and specific oxygen uptake rate（SOUR ） were investigated. The results show that ,When the value of influent COD/N/P was 100/2/0.4, filamentous activated sludge bulking occurred. When the value of influent COD/N/P was 100/0.5/0.1 ,the activated sludge had good settling properties. MLSS dropped from nearly 2 200mg/L to just under 1 800mg/L in the two reactors. SOUR showed a rising trend and the removal rate of COD showed a downward trend.
出处
《环境保护与循环经济》
2012年第10期48-52,共5页
environmental protection and circular economy
基金
"城市水资源与水环境国家重点实验室"开放基金项目(QAK201006)
牡丹江水质综合保障技术及工程示范研究(2012ZX07201-002)
关键词
氮磷缺乏
SBR
污泥沉降性
丝状菌膨胀
nitrogen and phosphorus deficiency
SBR
sludge settleability
filamentous bulking
