摘要近年来，城市化和工业化大量产生的重金属严重污染水源，特别是废水中含有很多自然界不可降解的重金属离子，其中污染毒性比较突出的是六价铬离子，它不能被自然降解，而是通过生物积累进入人体危害人类身体健康。60562

目前处理含铬废水的方法有离子交换法、化学还原法、电解法和吸附法等。其中，吸附法由于具有设备简单、操作容易、效果稳定、可循环等优点而被广泛采用。而在众多吸附材料中，活性炭是尤为常见的，活性炭拥有来源广泛、价格低廉、吸附性能好、易再生等优势，故此，活性炭在废水吸附处理领域得到广泛的应用。基于此，本实验选取在治理工业废水时比较有效的活性炭吸附处理的方法，从吸附时间、投加量、pH条件、温度等方面来研究活性炭在吸附处理含铬废水时的最佳工艺条件。

Abstract Recent years，a significant number of  heavy mental which are produced by urbanizatioin and industrialization  has caused serious water pollution. Specially，there are Lots of  heavy mental ions that is undegradable in effluent，and Cr6+  is the most poisonous among them. Cr6+ couldn’t be degraded，but in approach of biological accumulation access human body so as to endanger health of  people instead.

At present，the treatment manner of chrome contained waste water including ion exchange process，chemical reduction method，electrolytic process and adsorptive process. Inside of them，people prefer adsorptive process because of it employ easy equipment so that it’s easy to be operated. Besides，the steady effect and recyclable are also the advantages of it. Considering all above, activated carbon gets the extensive applied as a result of  the universality，Low-price，strong adsorption，and easy to be recreated. So，the  experiment choose a effective method that is activated carbon adsorption to manage trade waste sewage，in order to find the most effective conditions by compared at different adsorption time，dosage，pH and reaction temperature. Thus, we could find the advantages of this method.

毕业论文关键词：含铬废水；活性炭；物理吸附

Key words: chrome-contained waste water； activated carbon；adsorptive process

1 引言 4

1.1  选题背景 4

1.2  国内外研究现状 4

1.3  发展趋势 5

2 研究内容和拟解决的主要问题 5

2.1  研究的基本内容 5

2.2  拟解决的主要问题 5

3 研究方法及措施 5

3.1  研究方法及手段 5

3.1.1 静态实验 5

3.1.2 动态实验 6

3.2  技术路线 6

3.3  实验方案 6

3.3.1  实验材料 6

3.3.2  实验步骤 6

4 结论与展望 7

4.1  结论 7

4.1.1吸附时间对吸附效果的影响 7

4.1.2 投加量对吸附效果的影响 8

4.1.3 废水pH 对吸附效果的影响 8

4.1.4 温度对吸附效果的影响 9

4.1.5废水铬质量浓度对吸附效果的影响