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作者:

Zhang, Guojun (Zhang, Guojun.) | Ji, Shulan (Ji, Shulan.) (学者:纪树兰) | Xi, Beidou (Xi, Beidou.)

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摘要:

Wastewater from the synthesizing of amoxillin is characterized by its very high TOC and low biodegradability and the presence of organic solvents and dissolved salts. These hamper direct biological or membrane-based treatments. A combined process of extraction (EX), Fenton oxidation (FO) and a two-stage reverse osmosis (RO) was proposed to treat such wastewater. EX and FO were performed in a serial approach to function as the pretreatments to remove the solvents and other organics before RO treatment. It was noted the appropriate phase ratio (A/O) was 1: 1 and the contact time was 3 h. Appropriate dosages of FeSO(4) and H(2)O(2) were 10 g/l and 2 g/l, respectively. Under the appropriate conditions, TOC can be reduced by 50.6% and 37.8% in the EX and FO units, respectively. TOC can be further reduced 10.1% and 1.2% in the first and second RO processes, respectively. There was consequently an overall TOC removal efficiency of 99.7% after the whole process of EX-FO-RO-RO. Dissolved salts were also greatly removed during the two-stage RO process. The observations by using SEM showed that the RO membrane can be protected well by the pretreatments of EX and FO.

关键词:

extraction Fenton oxidation (FO) amoxillin wastewater TOC removal reverse osmosis (RO)

作者机构:

  • [ 1 ] Beijing Univ Technol, Coll Environm & Energy Engn, Beijing 100022, Peoples R China
  • [ 2 ] Chinese Res Inst Environm Sci, Beijing 100012, Peoples R China

通讯作者信息:

  • [Zhang, Guojun]Beijing Univ Technol, Coll Environm & Energy Engn, Beijing 100022, Peoples R China

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来源 :

DESALINATION

ISSN: 0011-9164

年份: 2006

期: 1-3

卷: 196

页码: 32-42

9 . 9 0 0

JCR@2022

ESI学科: CHEMISTRY;

JCR分区:2

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SCOPUS被引频次: 33

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