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剩余污泥发酵液用于脱氮除磷碳源的研究

时间:2021-03-02 21:09来源:毕业论文
讨论了剩余污泥厌氧消解酸化过程中,pH、温度、污泥投配比及停留时间对有机物、溶解性COD(SCOD)和短链脂肪酸(SCFAs)产生量的影响,确定了污泥最佳反应条件:pH = 10,T = 40℃

摘要论文讨论了剩余污泥厌氧消解酸化过程中,pH、温度、污泥投配比及停留时间对有机物、溶解性COD(SCOD)和短链脂肪酸(SCFAs)产生量的影响,确定了污泥最佳反应条件:pH = 10,T = 40℃,投配比 = 50%及SRT = 6d。采用正交实验对多因素多水平的水解液中氮磷去除条件进行优化,通过直观分析和方差分析,确定碱渣去除氮磷实验中,pH为最显著因素,其次是反应时间,最后为正磷酸盐/碱渣质量比,综合考虑后确定最佳反应条件为:正磷酸盐/碱渣为12mg/g,时间为24h,pH为10;分子筛去除氨氮实验中,反应时间为最显著因素,其次是氨氮/分子筛,最后是pH,确定最佳反应条件为:氨氮/分子筛为100mg/g,时间为30h,pH为11。63859

毕业论文关键词 剩余污泥;厌氧;短链脂肪酸;脱氮除磷

毕业设计说明书(论文)外文摘要

Title  The research of sludge fermentation liquid as carbon source for denitrification and phosphorus removal                  

Abstract This paper discuss the effect of pH, temperature, adding radio and retention time on organic matter, SCOD and SCFAs concentration under waste activated sludge anaerobic digestion acidification proces. We determined optimum reaction conditions: pH = 10, T = 40 ℃, adding ratio = 50% and SRT = 6d. Nitrogen and phosphorus removal were experimented by orthogonal experiment through the intuitive analysis and variance analysis, showing pH was the most significant factor, followed by the reaction time, the last is phosphate / alkalinity sludge in the nitrogen and phosphorus removal of alkaline sludge experiments. We ascertained the optimum reaction conditions were: phosphate / alkalinity sludge of 12mg/g, reaction time of 24h, pH 10; 

The reaction time is the most significant factor, followed by ammonia / molecular sieve, finally pH in the nitrogen and phosphorus removal of molecular sieve experiments. The optimum reaction conditions were: ammonia / molecular sieve of 100mg/ g, time of 30h, pH 11.

Keywords  waste activated sludge; anarobic; short-chain fatty acid; nitrogen and phosphorus removal

目   录

1  引言 1

1.1  背景 1

1.2  国内外研究现状 2

1.2.1  污泥水解酸化产短链脂肪酸 2

1.2.2  污泥发酵液中氮磷的回收及发酵液的利用 4

1.3  课题研究的内容 4

1.3.1  剩余污泥水解酸化最适条件的研究 5

1.3.2  污泥发酵液中氮磷的去除 5

1.3.3  脱氮除磷后上清液做反硝化碳源 5

2  实验材料与方法 6

2.1  实验材料 6

2.1.1  实验药品 6

2.1.2  实验仪器和设备 6

2.2  实验方法和步骤 7

2.2.1  离子色谱标准曲线的绘制 7

2.2.2  蛋白质标准曲线的绘制 8

2.2.3  可溶性糖标准曲线的绘制 8

2.2.4  NH4+标准曲线的绘制 9

2.2.5  剩余污泥水解产酸条件的优化 9

2.2.6  碱渣去除发酵液中氮磷的研究 剩余污泥发酵液用于脱氮除磷碳源的研究:http://www.751com.cn/huaxue/lunwen_70664.html

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