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	以PHAs为固体碳源的城镇二级出水深度脱氮研究
	李彭 ; 唐蕾 ; 左剑恶 ; 袁琳 ; 李再兴 ; LI Peng ; TANG Lei ; ZUO Jian-e ; YUAN Lin ; LI Zai-xing
	2016-03-30 ; 2016-03-30
关键词	缓释碳源 固相反硝化 可生物降解聚合物 聚羟基脂肪酸酯 城镇二级出水 sustained-release carbon source solid-phase denitrification biodegradable polymers polyhydroxyalkanoates(PHAs) municipal secondary effluent X703.5
其他题名	Tertiary nitrogen removal of the municipal secondary effluent using PHAs as solid carbon sources
中文摘要	利用从连续运行的缓释碳源滤料滤池中取出的聚羟基脂肪酸酯(PHAs)颗粒,研究了微生物和硝酸盐对其的总有机碳(TOC)释放速率的影响,并研究了温度、pH值、硝态氮浓度对其反硝化速率的影响.结果表明:原有的和附着有微生物的PHAs颗粒在去离子水中TOC释放速率分别为0.030,0.053mg/(g·d),远低于水中有硝酸盐时的TOC释放速率[进水NO3--N为30mg/L时,TOC释放速率为0.533mg/(g·d)].温度和pH值对反硝化速率影响较大,pH值为7.5时,在15~35℃范围内,30℃下的反硝化速率最大,为0.067mg/(g·h);温度为30℃时,pH值在6.0~9.0范围内,pH值为7.8时的反硝化速率最大,达到0.061mg/(g·h).反硝化速率与NO3--N浓度之间的关系符合Monod方程,最大反应速率和半饱和常数分别为4.74mgNO3--N/(gSS·h)和56.6mg/L.; Polyhydroxyalkanoates(PHAs) pellets, which were taken from a denitrification biofilter with sustained-release carbon source materials, were used to investigate the effects of microbes and nitrate on the organic carbon release rate of PHAs and the effects of temperature, pH and NO3--N concentration on the denitrification rates. The results indicated that the total organic carbon(TOC) release rates of original PHAs and those with biofilm attached were determined to be 0.030 and 0.053mg/(g·d) in the deionized water, respectively, which were much lower than that of 0.533mg/(g·d) in simultaneous presence of microbes and nitrate(30mg/L of NO3--N concentration). The effects of temperature and pH on denitrification rates were significant. When influent NO3--N concentration was 50mg/L, the maximum denitrification rates achieved to 0.067mg/(g·h) at 30℃ in the temperature range of 15 to 35℃, and to 0.061mg/(g·h) at pH7.8 in the pH range of 6.0 to 9.0. The relationship between denitrification rates and NO3--N concentrations appeared to be in good agreement with Monod Equation, and the maximum denitrification rate and the saturation constant were 4.74mgNO3--N/(gSS·h) and 56.6mg/L, respectively.
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/144143]
专题	清华大学
推荐引用方式 GB/T 7714	李彭,唐蕾,左剑恶,等. 以PHAs为固体碳源的城镇二级出水深度脱氮研究[J],2016, 2016.
APA	李彭.,唐蕾.,左剑恶.,袁琳.,李再兴.,...&LI Zai-xing.(2016).以PHAs为固体碳源的城镇二级出水深度脱氮研究..
MLA	李彭,et al."以PHAs为固体碳源的城镇二级出水深度脱氮研究".(2016).

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