CN115417549B - Comprehensive treatment process for high-salt organic matter wastewater - Google Patents
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- 239000002351 wastewater Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000008569 process Effects 0.000 title claims abstract description 19
- 239000005416 organic matter Substances 0.000 title description 2
- 238000001179 sorption measurement Methods 0.000 claims abstract description 39
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 238000002425 crystallisation Methods 0.000 claims abstract description 25
- 230000008025 crystallization Effects 0.000 claims abstract description 25
- 238000001914 filtration Methods 0.000 claims abstract description 25
- 239000011347 resin Substances 0.000 claims abstract description 23
- 229920005989 resin Polymers 0.000 claims abstract description 23
- 238000000926 separation method Methods 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 230000008929 regeneration Effects 0.000 claims abstract description 5
- 238000011069 regeneration method Methods 0.000 claims abstract description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 70
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 46
- 150000003839 salts Chemical class 0.000 claims description 41
- 239000011780 sodium chloride Substances 0.000 claims description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 239000000706 filtrate Substances 0.000 claims description 24
- 238000001704 evaporation Methods 0.000 claims description 18
- 239000003463 adsorbent Substances 0.000 claims description 11
- 230000008020 evaporation Effects 0.000 claims description 10
- 125000004122 cyclic group Chemical group 0.000 claims description 8
- 238000005086 pumping Methods 0.000 claims description 7
- 238000004090 dissolution Methods 0.000 claims description 6
- 238000004821 distillation Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 239000012065 filter cake Substances 0.000 claims description 6
- 238000011068 loading method Methods 0.000 claims description 6
- 239000000126 substance Substances 0.000 abstract description 4
- 238000004065 wastewater treatment Methods 0.000 abstract description 4
- 238000004043 dyeing Methods 0.000 abstract description 3
- 238000007639 printing Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000004064 recycling Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002920 hazardous waste Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000011112 process operation Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
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- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/14—Purification
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/14—Purification
- C01D3/16—Purification by precipitation or adsorption
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/03—Pressure
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
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- Environmental & Geological Engineering (AREA)
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Abstract
The invention discloses a comprehensive treatment process of high-salt organic wastewater, which belongs to the technical field of petrochemical, chemical, medical and printing and dyeing wastewater treatment, and comprises concentration, adsorption filtration, concentration crystallization, filtration and secondary crystallization; the adsorption filtration is carried out, the concentrated solution is transferred into a reaction kettle which is pre-added with resin for adsorption treatment, solid-liquid separation is carried out after the adsorption is finished, so as to obtain adsorption solution, and the resin is subjected to regeneration treatment; the comprehensive treatment process is simple and convenient to operate, low in operation cost and stable in equipment operation.
Description
Technical Field
The invention relates to the technical field of petrochemical, chemical, medical and printing and dyeing wastewater treatment, in particular to a comprehensive treatment process of high-salt organic wastewater.
Background
With the rapid development of the industry in China, more and more high-salt organic wastewater is generated in daily production in petrochemical industry, chemical industry, printing and dyeing industry and pharmaceutical industry, and the discharge requirement cannot be met due to the high Chemical Oxygen Demand (COD) index and salt content of the wastewater. The high-salt wastewater treatment is a great environmental protection problem facing the industrial development at the present stage, and is also an important guarantee for obtaining remarkable economic benefit, environmental benefit and social benefit.
At present, the large-scale treatment of the high-salt organic wastewater still has the characteristics of low treatment efficiency and high operation cost, and also has a plurality of key technical problems to be broken through and solved. At present, a plurality of methods are adopted for treating the salt-containing wastewater, such as biochemical degradation, evaporation, electrolysis, ion exchange, membrane method and the like, and although a certain effect is achieved in the aspect of treating the salt-containing wastewater, the problems of high operation cost, investment cost and corrosion and scaling of equipment make the high-salt organic wastewater treatment technology difficult to popularize and apply, and how to solve the problem of treating the high-salt organic wastewater is a task which is currently and urgently needed to be completed in the technical field.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a comprehensive treatment process for high-salt organic wastewater, which has the advantages of simple process operation, low running cost and stable equipment running.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
The comprehensive treatment process of the high-salt organic wastewater comprises concentration, adsorption filtration, concentration crystallization, filtration and secondary crystallization;
The concentration, the pretreated high sodium chloride organic wastewater is distilled to obtain a concentrated solution with the salt content of 22-25% and the COD of 20000-21000ppm and condensed water;
The salt content in the pretreated high-sodium chloride organic wastewater is 12%, and the COD content is 12000ppm;
The distillation temperature in the distillation treatment in the concentration is 65-100 ℃ and the pressure is-0.06 MPa to 0.04MPa.
The adsorption filtration is carried out, the concentrated solution is transferred into a reaction kettle which is pre-added with resin for adsorption treatment, solid-liquid separation is carried out after the adsorption is finished, so as to obtain adsorption solution, and the resin is subjected to regeneration treatment;
the resin is industrial-grade powdered activated carbon, and the model is LSC-100;
the loading of the resin is 2.5-10% of the concentrated solution.
And concentrating and crystallizing, namely evaporating and crystallizing the adsorption liquid, evaporating and concentrating at 105 ℃, concentrating until the solid-liquid ratio is 2:1, then placing into a centrifuge for hot filtration to obtain sodium chloride crude salt, and returning filtrate to the concentration step for cyclic treatment.
The method comprises the steps of filtering, namely adding crude sodium chloride into a reaction kettle with condensed water and an adsorbent added in advance for dissolution, removing organic matters and decoloring, pumping the crude sodium chloride into a centrifugal machine through a pump and a pipeline after the adsorption is finished, performing solid-liquid separation to obtain filtrate, and applying resin to an adsorption filtering step;
Wherein, the weight ratio of the sodium chloride crude salt to the condensed water to the resin is 1:4:0.1-1;
the adsorbent is industrial-grade powdered activated carbon, and the model is LSC-100.
And (3) performing secondary crystallization, evaporating and crystallizing the filtrate in the filtering step, concentrating until the solid-to-liquid ratio is 5:2, performing hot filtration, returning the filtrate to the concentrating and crystallizing step for cyclic treatment, and drying the filter cake to obtain pure sodium chloride.
Compared with the prior art, the invention has the beneficial effects that:
(1) The comprehensive treatment process of the high-salt organic wastewater belongs to a novel energy-saving and emission-reduction technology, has the advantages of simple and practical process operation, low running treatment cost, simple and convenient equipment maintenance, low investment cost and small occupied area, can basically realize the separation of water, salt and organic matters in the high-salt organic wastewater, does not need to add medicament in the treatment process, and has low treatment energy consumption;
(2) According to the comprehensive treatment process for the high-salt organic wastewater, salt and organic matters in the water are collected in a solid form after treatment, pure salt can be sold as a byproduct, clean reuse water is recovered, zero emission of an enterprise wastewater system is realized, the environment is protected, water resources are saved, waste low-energy sources are utilized, the environmental pollution is reduced, and the aims of green production, energy conservation and emission reduction can be realized for enterprises;
(3) According to the comprehensive treatment process of the high-salt organic wastewater, the sodium chloride content in the pure sodium chloride obtained after treatment is more than or equal to 98.5%; the salt content in the condensed water is less than 0.2 percent, and the COD content is less than 100ppm.
Drawings
FIG. 1 is a flow chart of a comprehensive treatment process of high-salt organic wastewater.
Detailed Description
Specific embodiments of the present invention will now be described in order to provide a clearer understanding of the technical features, objects and effects of the present invention.
Example 1
As shown in fig. 1, a comprehensive treatment process for high-salt organic wastewater specifically comprises the following steps:
1. Introducing pretreated high-sodium chloride organic wastewater into a single-effect evaporator through a pump and a pipeline, and distilling the high-salt organic wastewater at 100 ℃ and 0.04MPa to obtain concentrated solution with the salt content of 24% and the COD of 20000ppm and condensed water;
the salt content in the pretreated high-sodium chloride organic wastewater is 12%, and the COD content is 12000ppm.
2. Transferring the concentrated solution into a reaction kettle in which resin is added in advance for adsorption treatment, pumping the concentrated solution into a centrifuge through a pump and a pipeline after adsorption is finished, performing solid-liquid separation to obtain adsorption solution, and removing regeneration treatment of the resin;
the resin is industrial-grade powdered activated carbon, and the model is LSC-100;
the loading of the resin used for application accounts for 10% of the mass fraction of the concentrated solution.
3. Transferring the adsorption liquid into a crystallization kettle for evaporation crystallization, evaporating and concentrating at 105 ℃, putting the concentrated solution into a two-in-one filter for hot filtration after the solid-to-liquid ratio is 2:1 to obtain sodium chloride crude salt, and pumping the filtrate back to the step 1 for recycling treatment;
4. Adding crude salt into a reaction kettle with condensed water and adsorbent added in advance for dissolution, removing organic matters and decoloring, pumping the crude salt into a centrifuge through a pump and a pipeline after the adsorption is finished, performing solid-liquid separation to obtain filtrate, and applying the resin sleeve to the step 2;
Wherein the weight ratio of the crude salt to the condensed water to the adsorbent is 1:4:1;
The adsorbent is industrial-grade powdered activated carbon, and the model is LSC-100;
5. Transferring the filtrate into a crystallization kettle for evaporation crystallization, concentrating until the solid-to-liquid ratio is 5:2, then placing the filtrate into a two-in-one filter for hot filtration, pumping the filtrate back into the step 3 for cyclic treatment, and drying the filter cake to obtain pure sodium chloride;
the sodium chloride content in the pure sodium chloride is more than or equal to 98.5%;
the condensate water in the step 1 and the step 3 has salt content less than 0.2% and COD content less than 100ppm.
Example 2
As shown in fig. 1, a comprehensive treatment process for high-salt organic wastewater specifically comprises the following steps:
1. Introducing pretreated high-sodium chloride organic wastewater into a multi-effect evaporator through a pump and a pipeline, and carrying out negative pressure distillation treatment on the high-salt organic wastewater at 70 ℃ and minus 0.06MPa to obtain concentrated solution with the salt content of 23% and the COD of 21000ppm and condensed water;
the salt content in the pretreated high-sodium chloride organic wastewater is 12%, and the COD content is 12000ppm.
2. Transferring the concentrated solution into a reaction kettle in which resin is added in advance, performing adsorption treatment, and after adsorption, enabling the concentrated solution to enter a plate frame through a pump and a pipeline, performing solid-liquid separation, and removing regeneration treatment of the resin;
the resin is industrial-grade powdered activated carbon, and the model is LSC-100;
the loading of the resin used for application accounts for 10% of the mass fraction of the concentrated solution.
3. Transferring the adsorption liquid into a crystallization kettle for evaporation crystallization, evaporating and concentrating at 105 ℃, putting the concentrated solution into a two-in-one filter for hot filtration after the solid-to-liquid ratio is 2:1 to obtain sodium chloride crude salt, and pumping the filtrate back to the step 1 for recycling treatment;
4. Adding crude salt into a reaction kettle with condensed water and an adsorbent added in advance for dissolution, removing organic matters and decoloring, entering a plate frame through a pump and a pipeline after the adsorption is finished, carrying out solid-liquid separation, and then applying a resin sleeve to the step 2;
wherein, the ratio of the crude salt to the condensed water to the adsorbent is 1:4:1;
The adsorbent is industrial-grade powdered activated carbon, and the model is LSC-100;
5. Transferring the filtrate into a crystallization kettle for evaporation crystallization, concentrating until the solid-to-liquid ratio is 5:2, then putting the filtrate into two-in-one for heat filtration, returning the filtrate to the step 3 for cyclic treatment, and drying the filter cake to obtain pure sodium chloride;
the sodium chloride content in the pure sodium chloride is more than or equal to 98.5 percent.
The condensate water in the step 1 and the step 3 has salt content less than 0.2% and COD content less than 100ppm.
Example 3
As shown in fig. 1, a comprehensive treatment process for high-salt organic wastewater specifically comprises the following steps:
1. introducing pretreated high-sodium chloride organic wastewater into a multi-effect evaporator through a pump and a pipeline, and carrying out negative pressure distillation treatment on the high-salt organic wastewater at 70 ℃ and minus 0.06MPa to obtain concentrated solution with the salt content of 22% and the COD of 20500ppm and condensed water;
the salt content in the pretreated high-sodium chloride organic wastewater is 12%, and the COD content is 12000ppm.
2. Transferring the concentrated solution into a reaction kettle which is pre-added with activated carbon for adsorption treatment, and after adsorption, enabling the concentrated solution to enter a plate frame through a pump and a pipeline for solid-liquid separation to obtain an adsorption solution, wherein the activated carbon is used as hazardous waste treatment;
the type of the activated carbon used for the sleeve is LSC-100;
the loading of the activated carbon used for application accounts for 2.5% of the mass fraction of the concentrated solution.
3. Transferring the adsorption liquid into a crystallization kettle for evaporation crystallization, evaporating and concentrating at 105 ℃, putting the concentrated solution into a two-in-one filter for hot filtration after the solid-to-liquid ratio is 2:1 to obtain sodium chloride crude salt, and returning filtrate to the step 1 for cyclic treatment;
4. Adding crude salt into a reaction kettle with condensed water and active carbon added in advance for dissolution, removing organic matters and decoloring, and after the absorption is finished, enabling the crude salt to enter a plate frame through a pump and a pipeline for solid-liquid separation to obtain filtrate; then the activated carbon can be used in the step 2;
wherein, the ratio of the crude salt to the condensed water to the active carbon is 1:4:0.1;
The activated carbon is industrial-grade powder activated carbon, and the model is LSC-100.
5. Transferring the filtrate into a crystallization kettle for evaporation crystallization, concentrating until the solid-to-liquid ratio is 5:2, centrifuging, returning the filtrate to the step 3 for cyclic treatment, and drying the filter cake to obtain purer sodium chloride;
the sodium chloride content in the pure sodium chloride is more than or equal to 98.5 percent.
The condensate water in the step 1 and the step 3 has salt content less than 0.2% and COD content less than 100ppm.
Example 4
As shown in fig. 1, a comprehensive treatment process for high-salt organic wastewater specifically comprises the following steps:
1. introducing pretreated high-sodium chloride organic wastewater into a multi-effect evaporator through a pump and a pipeline, and concentrating the high-salt organic wastewater under the conditions of 65 ℃ and minus 0.06MPa to obtain concentrated solution with the salt content of 25% and the COD of 21000ppm and condensed water;
the salt content in the pretreated high-sodium chloride organic wastewater is 12%, and the COD content is 12000ppm.
2. Transferring the concentrated solution into a reaction kettle which is pre-added with activated carbon for adsorption treatment, and after adsorption, enabling the concentrated solution to enter a plate frame through a pump and a pipeline for solid-liquid separation to obtain an adsorption solution, wherein the activated carbon is used as hazardous waste treatment;
the type of the activated carbon used for the sleeve is LSC-100;
the loading of the activated carbon used for application accounts for 2.5% of the mass fraction of the concentrated solution.
3. Transferring the adsorption liquid into a crystallization kettle for evaporation crystallization, evaporating and concentrating at 105 ℃, placing the concentrated solution into a centrifuge for hot filtration after the solid-liquid ratio is 2:1 to obtain sodium chloride crude salt, and returning filtrate to the step 1 for recycling treatment;
4. adding the crude salt into a reaction kettle which is added with condensed water and active carbon in advance for dissolution, removing organic matters and decoloring, and entering a plate frame through a pump and a pipeline for solid-liquid separation after the adsorption is finished;
wherein, the ratio of the crude salt to the condensed water to the active carbon is 1:4:0.1;
The activated carbon is industrial-grade powder activated carbon, and the model is LSC-100.
5. Transferring the filtrate into a crystallization kettle for evaporation crystallization, concentrating until the solid-to-liquid ratio is 5:2, centrifuging, returning the filtrate to the step 3 for cyclic treatment, and drying the filter cake to obtain purer sodium chloride;
the sodium chloride content in the pure sodium chloride is more than or equal to 98.5 percent.
The condensate water in the step 1 and the step 3 has salt content less than 0.2% and COD content less than 100ppm.
The percentages used in the present invention are mass percentages unless otherwise indicated.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The comprehensive treatment process of the high-salt organic wastewater is characterized by comprising concentration, adsorption filtration, concentration crystallization, filtration and secondary crystallization;
The concentration, the pretreated high sodium chloride organic wastewater is distilled to obtain a concentrated solution with the salt content of 22-25% and the COD of 20000-21000ppm and condensed water;
The salt content in the pretreated high-sodium chloride organic wastewater is 12%, and the COD content is 12000ppm;
The adsorption filtration is carried out, the concentrated solution is transferred into a reaction kettle which is pre-added with resin for adsorption treatment, solid-liquid separation is carried out after the adsorption is finished, so as to obtain adsorption solution, and the resin is subjected to regeneration treatment;
the resin is industrial-grade powdered activated carbon, and the model is LSC-100;
the loading capacity of the resin used for the sleeve accounts for 2.5-10% of the mass fraction of the concentrated solution;
The method comprises the steps of filtering, namely adding crude sodium chloride into a reaction kettle with condensed water and an adsorbent added in advance for dissolution, removing organic matters and decoloring, pumping the crude sodium chloride into a centrifugal machine through a pump and a pipeline after the adsorption is finished, performing solid-liquid separation to obtain filtrate, and applying resin to an adsorption filtering step;
the weight ratio of the sodium chloride crude salt to the condensed water to the adsorbent is 1:4:0.1-1;
The adsorbent is industrial-grade powdered activated carbon, and the model is LSC-100;
and (3) performing secondary crystallization, evaporating and crystallizing the filtrate in the filtering step, concentrating until the solid-to-liquid ratio is 5:2, performing hot filtration, returning the filtrate to the concentrating and crystallizing step for cyclic treatment, and drying the filter cake to obtain pure sodium chloride.
2. The integrated treatment process for high-salt organic wastewater according to claim 1, wherein the distillation temperature in the distillation treatment in the concentration is 65-100 ℃ and the pressure is-0.06 MPa to 0.04MPa.
3. The comprehensive treatment process of high-salt organic wastewater according to claim 1, wherein the concentration crystallization is carried out, the adsorption liquid is evaporated and crystallized, the evaporation concentration is carried out under the condition of 105 ℃, the concentration is carried out until the solid-to-liquid ratio is 2:1, the solution is put into a centrifuge for hot filtration to obtain sodium chloride crude salt, and the filtrate is returned to the concentration step for circulation treatment.
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| CN104591464A (en) * | 2015-02-03 | 2015-05-06 | 石家庄工大化工设备有限公司 | Recycling method of high-salinity wastewater |
| CN113003829A (en) * | 2021-03-08 | 2021-06-22 | 盛隆资源再生（无锡）有限公司 | Treatment method of high-salinity organic wastewater |
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| CN104085933A (en) * | 2014-07-22 | 2014-10-08 | 北京金泰天成科技有限责任公司 | High-salinity and high organic matter wastewater treatment process |
| CN104291523A (en) * | 2014-09-18 | 2015-01-21 | 波鹰(厦门)科技有限公司 | Method for recovering sodium chloride and glycerin from glycerin-containing high-salinity organic wastewater |
| CN104591464A (en) * | 2015-02-03 | 2015-05-06 | 石家庄工大化工设备有限公司 | Recycling method of high-salinity wastewater |
| CN113003829A (en) * | 2021-03-08 | 2021-06-22 | 盛隆资源再生（无锡）有限公司 | Treatment method of high-salinity organic wastewater |
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