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Title:
SALT EXTRACTION APPARATUS FOR HIGH-SALINITY WASTE WATER AND SALT EXTRACTION METHOD
Document Type and Number:
WIPO Patent Application WO/2020/125285
Kind Code:
A1
Abstract:
A salt extraction method for high-salinity waste water, which comprises: mixing high-salinity waste water and an organic solvent such that an inorganic salt which does not dissolve in an organic solvent is precipitated from the high-salinity waste water to form a solid-liquid mixture; performing solid-liquid separation on the solid-liquid mixture to obtain solid-phase inorganic salt and low-salinity waste water. The solid-liquid inorganic salt separated by using the present method is fluffy and does not harden and will not cause sewage blockage. Further disclosed is a salt extraction apparatus for high-salinity waste water.

Inventors:
CHEN JIANJUN (CN)
ZHANG KE (CN)
WANG HUILI (CN)
Application Number:
PCT/CN2019/118454
Publication Date:
June 25, 2020
Filing Date:
November 14, 2019
Export Citation:
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Assignee:
SUZHOU QINGRAN ENVIRONMENTAL PROTECTION TECH CO LTD (CN)
SHAANXI CHUANGJING ENVIRONMENTAL PROTECTION TECH CO LTD (CN)
International Classes:
C02F1/26; B01D11/04; C02F1/58
Foreign References:
CN109437442A2019-03-08
US20140360936A12014-12-11
CN102452696A2012-05-16
JP2002186978A2002-07-02
GB1077684A1967-08-02
CN102849885A2013-01-02
CN108298752A2018-07-20
CN108147489A2018-06-12
Other References:
FENG, ZIYAN ET AL.: "Recycling of Petroleum Sulfonate from High Salt Wastewater by Extractive Crystallization", ENVIRONMENTAL SCIENCE & TECHNOLOGY, vol. 37, no. 6, 30 June 2014 (2014-06-30), ISSN: 1003-6504, DOI: 20200116161304X
Attorney, Agent or Firm:
SUZHOU WISPRO INTELLECTUAL PROPERTY AGENCY (CN)
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