摘要
以人工合成废水为研究对象,建立新型好氧/缺氧/好氧/延长闲置（O/A/O/EI）序批式反应器,探究了初始pH为6.0,7.0和8.0时对O/A/O/EI脱氮除磷性能的影响,最后控制初始pH=8.0来处理实际生活污水。通过比较不同初始pH值作用下新型工艺的脱氮除磷效果并分析微生物体内代谢储能物质的周期变化,探讨了初始pH值对O/A/O/EI工艺脱氮除磷的影响机理。结果表明：合成废水初始pH=8.0时,O/A/O/EI工艺能表现出良好的生物脱氮（93±2）%除磷（92±3）%性能,单位VSS的除磷量为（4.01±0.15）mg/g,脱氮量为（5.23±0.27）mg/g。控制pH为8.0时处理实际生活污水,生物脱氮除磷分别为（85±2）%和（87±3）%,效率较低的原因可能是实际污水的可利用COD有限（130～240 mg/L）。
The paper investigated the influence of initial pH 6. 0,7. 0,8. 0 on biological nitrogen and phosphorus removal in a novel oxic / anoxic / oxic / extended-idle sequencing batch reactor by feeding synthetic wastewater,and finished the experiments by controlling the initial pH at 8. 0. Biological nutrient removal performances at different initial pH value were compared,and varieties of intracellular metabolic storage material in one cycle were analyzed to explore the mechanism of the effect of the initial pH on nitrogen and phosphorus removal. The results showed that O / A / O / EI system could exhibit excellent biological nitrogen（ 93 ±2） % and phosphorus（ 92 ± 3） % removal performance. Phosphorus removal by per unit VSS was（ 4. 01 ± 0. 15） mg/g,and nitrogen removal by per unit VSS was（ 5. 23 ± 0. 27） mg / g. The biological nitrogen and phosphorus removal efficiencies was（ 85 ±2） % and（ 87 ±3） % respectively,when treating real wastewater by controlling the initial pH at 8. 0. The main reason for comparatively lower efficiencies was the limited available COD（ 130 ～ 240 mg / L） in real wastewater.
出处
《环境工程》
CAS
CSCD
北大核心
2015年第11期58-62,146,共6页
Environmental Engineering
