CN102616873A - High-salinity wastewater zero-emission method - Google Patents

High-salinity wastewater zero-emission method Download PDF

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Publication number
CN102616873A
CN102616873A CN2012101116788A CN201210111678A CN102616873A CN 102616873 A CN102616873 A CN 102616873A CN 2012101116788 A CN2012101116788 A CN 2012101116788A CN 201210111678 A CN201210111678 A CN 201210111678A CN 102616873 A CN102616873 A CN 102616873A
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CN
China
Prior art keywords
high
method
salt
wastewater
salinity wastewater
Prior art date
Application number
CN2012101116788A
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Chinese (zh)
Inventor
邹路易
詹旭
张光生
邹华
张一波
Original Assignee
江南大学
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Application filed by 江南大学 filed Critical 江南大学
Priority to CN2012101116788A priority Critical patent/CN102616873A/en
Publication of CN102616873A publication Critical patent/CN102616873A/en

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Abstract

The invention discloses a high-salinity wastewater zero-emission method and relates to a high-efficient physical method for removing salt from high-salinity wastewater. According to the method, a two-stage evaporation way is adopted, and the characteristic of high content of the salts in the wastewater is utilized for realizing the high-salinity wastewater zero-emission purpose. The method has the obvious effect of removing Cl<->, SO4<2->, Na<+>, Ca<2+> and the like, and through the adoption of the method, salt type substances can be simultaneously recovered and utilized. The method has the advantages of low cost, low operation cost, no secondary pollution and safety, and is a high-efficient method for realizing zero emission of high-salinity wastewater.

Description

A kind of method of high-salt wastewater zero release

Technical field

The present invention relates to a kind of method of high-salt wastewater zero release.

Background technology

In short supply along with industrial expansion and water resources, the factory effluent that some industries produced contains higher salinity, and its pollution concentration and quantity discharged present the trend of rising.Except containing the organic contamination beyond the region of objective existence, also contain a large amount of inorganic salt, in this type waste water like Cl -, SO 4 2-, Na +, Ca 2+Biological treatment has the obvious suppression effect to routine for plasma, the existence of these salt, thereby makes biological process handle very difficulty of high-salt wastewater.

Therefore, extremely urgent to the high-salt wastewater Processing Technology, exploring effective organic high-salinity wastewater treatment technology has become one of focus of present wastewater treatment.

Summary of the invention

The objective of the invention is in order to solve the zero release problem of serious day by day high-salt wastewater, and the physical method of the low cost of exploitation, low working cost, safety.This method is to utilize the high-efficiency evaporating reactor drum, through the mode of secondary consecutive evaporation, when realizing the high-salt wastewater zero release, can also recycle the salt after the evaporation.

Method to the high-salt wastewater zero release is carried out according to the following steps: adopt steam to heat up the ER device; With a certain proportion of wastewater flow rate, wastewater volume compares according to being 2~50: 1 with reactor volume, drops in the reactor drum; Through 10min~2h evaporation; Condensation process is not discharged any waste water, wherein to the clearance of salt more than 99.5%.

The characteristics of this method are that the reactor drum form is simple, low cost, and low working cost, non-secondary pollution, safety, this method especially have positive Significance for Environment to the brine waste of ultrahigh concentration.

Embodiment

For better implement the present invention, the following instance of special act is described further, but the present invention is not limited to these embodiment.

Instance 1

As research object, carry out the zero discharge treatment experiment with certain high-salt wastewater of industry.At first detect the content of salt in the waste water, the content of salt is 6.8%.Wastewater volume compares according to being 10: 1 with reactor volume, drops in the reactor drum, through 30min evaporation, condensation process.After the dual evaporation processing, system does not have waste liquid and produces, and all becomes the solid salts substances behind the waste liquid evaporations, reaches the zero release purpose.This part salt is reclaimed, and carry out reuse as raw material.

Instance 2

As research object, carry out the zero discharge treatment experiment with certain high-salt wastewater of industry.At first detect the content of salt in the waste water, the content of salt is 22.4%.Wastewater volume compares according to being 5: 1 with reactor volume, drops in the reactor drum, through 60min evaporation, condensation process.After the dual evaporation processing, system does not have waste liquid and produces, and all becomes the solid salts substances behind the waste liquid evaporations, reaches the zero release purpose.This part salt is reclaimed, and carry out reuse as raw material.

Claims (5)

1. the method for a high-salt wastewater zero release is characterized in that utilizing the mode of high-efficiency evaporating, realizes the zero release purpose of high-salt wastewater.
2. it is said to press claim 1, it is characterized in that adopting the mode of high-efficiency evaporating, and this mode is dual evaporation.
3. said by claim 1, it is characterized in that high-salt wastewater, to be to contain the salt amount in the waste water to surpass 1%.
4. said by claim 1, it is characterized in that the dual evaporation time is 10min~2h, the ER device of 1t once can be to handling high-salt wastewater 2t~50t.
5. said by claim 1, it is characterized in that the concentration of salt reaches 10mg/L in the waste water through the high-salt wastewater behind the secondary high-efficiency evaporating.
CN2012101116788A 2012-04-16 2012-04-16 High-salinity wastewater zero-emission method CN102616873A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012101116788A CN102616873A (en) 2012-04-16 2012-04-16 High-salinity wastewater zero-emission method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012101116788A CN102616873A (en) 2012-04-16 2012-04-16 High-salinity wastewater zero-emission method

Publications (1)

Publication Number Publication Date
CN102616873A true CN102616873A (en) 2012-08-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012101116788A CN102616873A (en) 2012-04-16 2012-04-16 High-salinity wastewater zero-emission method

Country Status (1)

Country Link
CN (1) CN102616873A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102992427A (en) * 2012-12-12 2013-03-27 众和海水淡化工程有限公司 Wastewater zero-discharge treatment system
CN103265090A (en) * 2013-05-29 2013-08-28 北京赛诺水务科技有限公司 Zero-emission device for concentrated saline water evaporated liquid and process method
CN105384295A (en) * 2015-12-07 2016-03-09 江西省广德环保科技股份有限公司 Zero-discharge processing method of high salinity wastewater

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102992427A (en) * 2012-12-12 2013-03-27 众和海水淡化工程有限公司 Wastewater zero-discharge treatment system
CN102992427B (en) * 2012-12-12 2013-09-04 众和海水淡化工程有限公司 Wastewater zero-discharge treatment system
CN103265090A (en) * 2013-05-29 2013-08-28 北京赛诺水务科技有限公司 Zero-emission device for concentrated saline water evaporated liquid and process method
CN105384295A (en) * 2015-12-07 2016-03-09 江西省广德环保科技股份有限公司 Zero-discharge processing method of high salinity wastewater

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WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20120801

C02 Deemed withdrawal of patent application after publication (patent law 2001)