Treatment process of high-salinity wastewater

A treatment process and high salinity technology, applied in water/sewage treatment, neutralized water/sewage treatment, multi-stage water/sewage treatment, etc., can solve equipment scaling and corrosion, affect heat transfer effect, and threaten ecological environment safety To achieve the effect of improving the quality of pure water, increasing water solubility, and saving water resources

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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] P507 is one of the acidic phosphorus extractants. P507 is soluble in kerosene or sulfonated kerosene to form the organic phase of extraction; P507 is often used to separate and purify tricobalt tetroxide. With the continuous increase of extraction cycles and other reasons, more P507 The extracted organic phase has to be discarded. The preparation of cobalt tetroxide needs to be extracted with P507. Most of the extracted pollutants are trapped in the high-salinity wastewater. If the high-salinity wastewater is not effectively treated and reused as production water, it will be caused by excessive salt content. Scaling and corrosion of equipment will affect the heat transfer effect and even shorten the service life of the equipment; at the same time, toxic and harmful pollutants are enriched in high-salinity wastewater. If they are directly discharged into the environmental water, it will seriously threaten the safety of the ecological environment. Environmental degradation and water scarcity create extreme pressure

Method used

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  • Treatment process of high-salinity wastewater
  • Treatment process of high-salinity wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Preparation of metal ion exchange resin:

[0030] SS1: Swell chlorine balls in toluene, add ethylenediamine solution, heat up to 148°C and stir for reflux reaction for 4 hours, filter after the reaction, wash with deionized water and absolute ethanol for 3 times, dry dry to obtain Intermediate A;

[0031] SS2: Swell intermediate A in nitrobenzene, let it stand for 12 hours, add ferric chloride under nitrogen, control the temperature at 180°C and stir and reflux for 1 hour, slowly raise the temperature to 233°C and continue to stir and reflux for 4 hours, and cool to room temperature , washed with deionized water until neutral, then extracted with absolute ethanol for 10 h, dried to obtain intermediate B;

[0032] SS3: Add di-tert-butyl dicarbonate into the tetrahydrofuran solution, add intermediate B, then add sodium hydroxide aqueous solution, then add p-chlorotoluene, stir well, then slowly add triethylamine dropwise, continue stirring after the dropwise addition Af...

Embodiment 2

[0038] Preparation of metal ion exchange resin:

[0039]SS1: Swell chlorine balls in toluene, add ethylenediamine solution, heat up to 150°C and stir for reflux reaction for 6 hours, filter after the reaction, wash with deionized water and absolute ethanol for 4 times, dry dry to obtain Intermediate A;

[0040] SS2: Swell intermediate A in nitrobenzene, let it stand for 13 hours, add ferric chloride under nitrogen, control the temperature at 182°C and stir and reflux for 1.3 hours, slowly raise the temperature to 234°C, continue to stir and reflux for 5 hours, and cool to At room temperature, wash with deionized water until neutral, then extract with absolute ethanol for 11 hours, and dry to obtain intermediate B;

[0041] SS3: Add di-tert-butyl dicarbonate into the tetrahydrofuran solution, add intermediate B, then add sodium hydroxide aqueous solution, then add p-chlorotoluene, stir well, then slowly add triethylamine dropwise, continue stirring after the dropwise addition ...

Embodiment 3

[0047] Preparation of metal ion exchange resin:

[0048] SS1: Swell chlorine balls in toluene, add ethylenediamine solution, heat up to 153°C and stir for reflux reaction for 8 hours, filter after the reaction, wash with deionized water and absolute ethanol for 5 times, and dry dry to obtain Intermediate A;

[0049] SS2: Swell intermediate A in nitrobenzene, let it stand for 15 hours, add ferric chloride under nitrogen, control the temperature at 183°C and stir and reflux for 1.5 hours, slowly raise the temperature to 235°C and continue to stir and reflux for 6 hours, and cool to At room temperature, wash with deionized water until neutral, then extract with absolute ethanol for 12 hours, and dry to obtain intermediate B;

[0050] SS3: Add di-tert-butyl dicarbonate into the tetrahydrofuran solution, add intermediate B, then add sodium hydroxide aqueous solution, then add p-chlorotoluene, stir well, then slowly add triethylamine dropwise, continue stirring after the dropwise a...

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Abstract

The invention relates to a treatment process of high-salinity wastewater, and belongs to the technical field of wastewater. The treatment process of the high-salinity wastewater comprises the following steps: S1, recovering oil in extraction wastewater by adopting an oil removal method of adsorption resin adsorption, and conducting filtering to obtain oil-removed wastewater; and S2, adding metal ion exchange resin into the oil-removed wastewater to remove heavy metals. Metal ion exchange resin is used for adsorbing heavy metals, resource recycling of heavy metal ions and ammonium sulfate is performed after adsorption treatment, and evaporated water after wastewater treatment can be returned to each water use process for use, so that high-salinity wastewater can be subjected to resource utilization and harmless treatment, a large amount of water resources can be saved, moreover, the resource utilization of the wastewater is a new benefit growth point, and the method has important significance in realizing water conservation and emission reduction.

Description

technical field [0001] The invention belongs to the technical field of metal material wastewater treatment, and relates to a treatment process for high-salinity wastewater. Background technique [0002] P507 is one of the acidic phosphorus extractants. P507 is soluble in kerosene or sulfonated kerosene to form the organic phase of extraction; P507 is often used to separate and purify tricobalt tetroxide. With the continuous increase of extraction cycles and other reasons, more P507 The extracted organic phase has to be discarded. The preparation of cobalt tetroxide needs to be extracted with P507. Most of the extracted pollutants are trapped in the high-salinity wastewater. If the high-salinity wastewater is not effectively treated and reused as production water, it will be caused by excessive salt content. Scaling and corrosion of equipment will affect the heat transfer effect and even shorten the service life of the equipment; at the same time, toxic and harmful pollutants...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10B01J39/18C02F1/42C02F101/20C02F101/30
CPCC02F9/00B01J39/18C02F1/42C02F1/285C02F1/041C02F1/66C02F2101/20C02F2101/30
Inventor 郑良明韦华磊
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