论文总字数：22714字

摘 要

本文利用ABR 生物接触氧化反应器（工艺Ⅰ）处理甲醇模拟废水，进水COD浓度分别为为2500mg/L、3200mg/L，同时将常规厌氧反应器 生物接触氧化反应器（工艺Ⅱ）作为对比研究 ，考察了工艺Ⅰ、工艺Ⅱ对COD、 氨氮的处理效果，同时主要考察了ABR反应器在不同HRT下的pH 、VFA变化情况。 （1）工艺Ⅰ、工艺Ⅱ对COD的去除率都非常高，最后稳定后都能达到96%以上，ABR反应器能在厌氧阶段就将绝大部分COD降解掉，ABR反应器的COD去除率在95%左右，而常规厌氧反应器的COD去除率在运行一个月后只有75%左右。表明ABR反应器较常规厌氧反应器COD去除效果更好，抗冲击负荷能力更强。

（2）ABR与常规厌氧反应器对于氨氮的处理效果并不是特别明显，常规厌氧反应器的氨氮去除率约18.9%，而ABR反应器的氨氮去除率也只有在21.0%左右。

（3）在厌氧阶段保持进水浓度不变，改变水力停留时间（HRT），分别为48h，36h，24h，发现缩短水力停留时间ABR第一隔室的VFA值明显增加，越往后面隔室VFA越小，表明在第一隔室主要进行了产酸阶段。第一隔室的pH值也随着HRT的缩短明显下降，第二、第三隔室的波动相对较小，且第三隔室能保持在7.0以上。

关键词：ABR反应器 常规厌氧反应器 水力停留时间 挥发性脂肪酸

Comparative study on ABR reactor and conventional anaerobic reactor with different HRT

Abstract

This article used ABR biological contact oxidation reactor (processⅠ) to treat methanol simulation waste water, and the influent concentrations of COD were 2500mg/L, 3500mg/L respectively. While the conventional anaerobic reactor biological contact oxidation reactor (processⅡ) as a comparison, the removal efficiencies of COD and ammonia were studied for processⅠand processⅡ. In addition, the values of pH and VFA of ABR reactor were measured at different HRT .

(1) The COD removal rate of both processⅠand processⅡ were very high, and reached over 96% after stabilizing. The majority of COD could be degraded in the anaerobic stage of ABR reactor with the removal rate about 95%, while the conventional anaerobic reactor COD removal rate was just 75% appropriately after a month in operation. It was indicated the ABR reactor had a better COD removal efficiency and capacity of resisting impact load than conventional anaerobic reactor.

(2) The ammonia nitrogen removal efficiencies of the ABR and conventional anaerobic reactor were not particularly evident, the ammonia removal efficiency of conventional anaerobic reactor was about 18.9%, while the ABR reactor was also only about 21.0%.

(3) During the anaerobic stage, keeping the influent concentration unchangeable and changing the hydraulic retention time (HRT) at 48h, 36h, 24h respectively, it was found that the VFA value of first compartment of ABR significantly increased with the reduction in HRT, and the VFA was decreased in the back compartments. It suggested that acid production stage conducted in the first compartment. Similarly the pH value was decreased obviously in the first compartment as the HRT was shortened, fluctuation of the second and third compartments was relatively small, and the pH of third compartment could be maintained above 7.0.

Keywords: ABR reactor; Conventional anaerobic reactor; HRT; VFA

目录

摘要 I

Abstract II

第一章 绪论 1

1.1前言 1

1.2高浓度废水处理方法 1

1.2.1物理处理法 1

1.2.2化学处理法 2

1.2.3生物处理技术 3

1.3本文研究的目的和主要内容 6

1.3.1目的意义 6

1.3.2主要内容 6

第二章 实验试剂、仪器及装置结构 7

2.1实验主要试剂 7

2.2实验分析方法 7

2.3主要实验仪器 8

2.4ABR工艺实验装置 9

2.5常规厌氧实验装置 10

第三章 ABR与常规厌氧反应器对水样的处理效果 11

3.1ABR与常规厌氧反应器实验水样 11

3.2接种污泥 11

3.3.1 ABR与常规厌氧反应器COD去除效果 11

3.3.1 ABR和常规厌氧氨氮的去除效果 14

3.4本章小结 16

第四章 HRT对反应器处理效果影响对比 17

4.1 VFA变化情况 17

4.2 pH变化情况 18

第5章 结论 20

参考文献 21

致谢 24

第一章 绪论

1.1前言

人类社会不断的发展进步,而这些进步是以对环境的肆意破坏，及对生态资源的滥用为代价的。其中水资源作为人维持生命、成长和发展必不可少的资源，却在不断的受到污染。大量工业企业为了更多的利润，在生产废水不达标的情况下，肆意将废水排入江河湖海中，使得水资源的污染范围不断扩大^[1-5]。

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