Title:
METHOD FOR COMPLETELY REMOVING HEAVY METAL IONS IN BATTERY PLANT WASTEWATER BY USING WATER-BASED FOAM SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/010835
Kind Code:
A1
Abstract:
A method for completely removing heavy metal ions in battery plant wastewater by using a water-based foam system, the method comprising: adjusting the pH value of wastewater to 4-11, adding a surfactant solution to the wastewater so that the molar ratio of the total number of moles of the surfactant and all heavy metal ions in the wastewater is a proper ratio, and stirring until uniform; introducing the mixed liquid into a foam processor, and introducing foaming gas into the bottom of the foam processor at a certain gas flow rate by means of a quartz sand core, and introducing the generated foam into a foam collector by means of a pipe at the top of the foam processor so as to carry out defoaming and heavy metal recovery treatment until no more foam is generated. The method has simple operation, is low cost, and is suitable for removing various heavy metal ions.
Inventors:
LI YING (CN)
ZHANG KAI (CN)
ZHANG KAI (CN)
Application Number:
PCT/CN2017/104317
Publication Date:
January 17, 2019
Filing Date:
September 29, 2017
Export Citation:
Assignee:
UNIV SHANDONG (CN)
International Classes:
C02F1/24; C02F1/28; C02F101/20
Foreign References:
| CN107055666A | 2017-08-18 | |||
| CN1843963A | 2006-10-11 | |||
| KR20120069895A | 2012-06-29 | |||
| US6635182B1 | 2003-10-21 |
Other References:
WANG ET AL.: "An experimental study on waste water containing Cr of continuous foam separation", CHINESE JOURNAL OF HEALTH LABORATORY TECHNOLOGY, 31 December 2008 (2008-12-31)
Attorney, Agent or Firm:
JINAN JINDI INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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