|本期目录/Table of Contents|

[1]刘丽娟,廖运文,高 辉*.过氧化钙降解污水中腐植酸的初探[J].绵阳师范学院学报,2018,(05):118-122,127.[doi:10.16276/j.cnki.cn51-1670/g.2018.05.022]
 LIU Lijuan,LIAO Yunwen,GAO Hui*.Study on the Degradation of Humic Acid in Sewage Degradation withCalcium Peroxide[J].Journal of Mianyang Normal University,2018,(05):118-122,127.[doi:10.16276/j.cnki.cn51-1670/g.2018.05.022]
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过氧化钙降解污水中腐植酸的初探(PDF)
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《绵阳师范学院学报》[ISSN:1672-612X/CN:51-1670/G]

卷:
期数:
2018年05期
页码:
118-122,127
栏目:
地理与资源环境科学
出版日期:
2018-05-15

文章信息/Info

Title:
Study on the Degradation of Humic Acid in Sewage Degradation withCalcium Peroxide
文章编号:
1672-612X(2018)05-0118-05
作者:
刘丽娟廖运文高 辉*
西华师范大学环境科学与工程学院,四川南充 637002
Author(s):
LIU LijuanLIAO YunwenGAO Hui*
College of Environmental Science and Engineering, China West Normal University, Nanchong,Sichuan 637002
关键词:
腐殖酸 过氧化钙 厌氧消化
Keywords:
humic acidcalcium peroxideanaerobic digestion
分类号:
X703
DOI:
10.16276/j.cnki.cn51-1670/g.2018.05.022
文献标志码:
A
摘要:
腐殖酸类物质在污水中大量存在,在污水的生物处理过程中因难以被微生物降解而最终转移到剩余污泥之中,从而抑制污泥厌氧消化过程中有机物的水解,且腐植酸还会以竞争电子的方式抑制乙酸产甲烷途径,降低甲烷产量.因此,需要寻找一种既能有效降解腐殖酸,又能促进污泥厌氧消化的方法.本实验采用过氧化钙对腐殖酸的纯水溶液进行处理,在无紫外光照、无机催化剂等任何外加催化条件下直接向腐植酸溶液中加入过氧化钙粉末,探究过氧化钙对腐植酸的降解效果,确定最佳去除率下的反应条件.结果表明:过氧化钙对水溶液中腐殖酸的去除率可达70%,在过氧
Abstract:
Humic substances, which abound in sewage/waste water, are difficult to be biodegraded by in wastewater biological treatment process. So, they are transferred to the waste activated sludge after the process. In the structure of humic acids, acidic functional groups are easy to combine with amino of micro-organic extracellular hydrolysis enzyme, which would hinder the hydrolysis enzyme contacting with other organic matter and inhibit organic hydrolysis in the process of waste water sludge anaerobic digestion. In addition, humic acids could inhibit aceticlastic methanogenesis as electron accepter and reduce methane production. Therefore, it is needed to find a way to degrade humic acids effectively, and promote the process of waste water sludge anaerobic digestion, simultaneously. Calcium peroxide, a source of reactive oxygen species, will produce hydroxyl radicals(oOH)in aqueous solution with strong oxidization, which can effectively remove COD and other non-biodegradable organic pollutants in wastewater.Studies have shown that calcium peroxide used as additive can significantly improve the effect of sludge hydrolysis and acidification in waste water sludge anaerobic digestion process. This study investigated the removal rate and influential factors of humic in aqueous solution by addingappropriate calcium peroxide. The results showed that calcium peroxide has a positive effect on the removal of humic acid in aqueous solution. Its removal rate can reach 70% and can be higher under the optimal reaction conditions. Further investigation showed that the economical dosage of Calcium peroxide is 0.08~0.1 g/L, and its optimal initial pH is 4.6~7.5.

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备注/Memo

备注/Memo:
收稿日期:2018-01-05
基金项目:西华师范大学青年资助专项(14D011).
第一作者简介:刘丽娟(1991- ),女,四川成都人,硕士研究生,研究方向:环境生态学与环境监测.
*通信作者简介:高辉(1986- ),男,湖北襄阳人,讲师,硕士,研究方向:环境生态学.
更新日期/Last Update: 2018-05-15