CN211688283U - Resourceful treatment device of industry waste salt - Google Patents
Resourceful treatment device of industry waste salt Download PDFInfo
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- CN211688283U CN211688283U CN201922129790.4U CN201922129790U CN211688283U CN 211688283 U CN211688283 U CN 211688283U CN 201922129790 U CN201922129790 U CN 201922129790U CN 211688283 U CN211688283 U CN 211688283U
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Abstract
The utility model provides a resourceful treatment device of industry waste salt, including dissolving tank, chemical edulcoration system, degree of depth edulcoration system, the concentrated decrement system of organic matter, absorption oxidation system and the evaporation crystallization system that connects gradually, wherein the evaporation crystallization system is multiple-effect evaporation crystallization. By adopting the device, the waste salt is firstly dissolved and filtered, and the impurity removal system is used for removing organic matters and other impurities in the industrial waste salt, then salt separation crystallization is realized by controlling the temperature of the evaporation crystallization system, and the purity and whiteness of the obtained sodium chloride, sodium nitrate and sodium sulfate reach the industrial grade standard and can be directly applied.
Description
Technical Field
The utility model belongs to hazardous waste handles field, concretely relates to resourceful treatment device of industry waste salt.
Background
The waste salt mainly refers to byproduct crystalline salt generated in industrial production, and is mainly divided into single waste salt, mixed salt and miscellaneous salt (containing impurities) according to the composition; the waste salt is mainly derived from chemical production and wastewater treatment, and comprises waste salt generated in the processes of pure water preparation, softening, high-salinity wastewater and the like, and waste salt generated in the processes of byproduct synthesis and the like in the production of pesticides and chlor-alkali industries. Because the waste salt contains a large amount of toxic and harmful substances, such as organic pollutants, heavy metal elements and the like, if the waste salt is stacked unreasonably, soil, underground water and air are easily polluted. In the face of increasingly strict environmental protection policies, the treatment of waste salt, residues and distillation residual liquid generated in the chemical industry becomes a problem to be solved urgently.
At present, the disposal of the waste salt is commonly resource disposal and landfill disposal. The direct landfill of the waste salt is easier to absorb water than other common industrial wastes, and if the waste salt is scattered and filled, the problem of sedimentation of the pile is easy to occur in the later period of the pile, so that potential safety hazards are brought to the subsequent landfill operation. The existing soluble hazardous wastes such as waste salt and the like are directly buried after being cured and cured by cement, and for a flexible landfill, the waste salt has strong solubility, high leakage possibility and great risk, and has great potential safety hazard to the environment in the area.
In the aspect of resource treatment of waste salt, methods commonly used for treating waste salt containing organic matters at present include methods such as secondary concentration and crystallization treatment after dissolution and refining, a direct thermal incineration method, high-temperature carbonization and the like, but the methods have low removal rate of the organic matters in the waste salt, and for single waste salt, solid salt contains impurities such as heavy metals, organic matters and the like; for mixed salt, the solid salt not only contains organic matters and heavy metals, but also contains sodium chloride, sodium nitrate and sodium sulfate, which can limit the use of the salt, and only can be used as a snow melting agent or a weaving dye agent in a small amount; most of the residual salt can be only buried or dumped, which not only easily causes pollution to the environment, but also causes great waste of resources.
The conventional evaporative crystallization equipment is adopted to finally obtain only mixed salt, namely a mixture of two or three of sodium chloride, sodium nitrate and sodium sulfate, which does not meet the industrial salt standard, so that the application of the mixed salt is still limited, namely, the waste salt subjected to resource treatment cannot be effectively utilized.
Disclosure of Invention
Therefore, the to-be-solved technical problem of the utility model lies in overcoming the defect that can't obtain effective utilization after the resourceful treatment of the industrial waste salt among the prior art to a resourceful treatment device of industrial waste salt is provided.
Therefore, the technical scheme who takes in this application does, a resourceful processing apparatus of industry waste salt, including dissolving tank, chemical edulcoration system, degree of depth edulcoration system, organic matter concentration decrement system, adsorption oxidation system and the evaporative crystallization system that connects gradually.
The dissolving tank is used for dissolving waste salt, and industrial waste salt is dissolved in the dissolving tank by adding water to form a salt solution.
The chemical impurity removal system comprises a primary reactor, a primary clarifier, a secondary reactor, a secondary clarifier and a matched dosing device, and the salt solution primarily removes impurities such as heavy metal, suspended matters and the like through the chemical impurity removal system;
the deep impurity removal system comprises a microfiltration device, a resin adsorption device and a degassing device, and salt solution from the previous system is further subjected to impurity removal, carbon dioxide removal and the like through the deep impurity removal system;
the organic matter concentration and decrement system is a membrane separation device, and an organic separation membrane is adopted to separate and remove most of organic matters;
the adsorption and oxidation system comprises a filler adsorption device and an oxidation device, wherein the adsorption device is used for adsorbing fillers with large specific surface area and can adsorb residual organic matters, and the oxidation device decomposes the residual organic matters by adding an oxidant;
the evaporative crystallization system is a multi-effect evaporative crystallization device;
preferably, the multi-effect evaporative crystallization device is a four-effect evaporative crystallization device, and sodium sulfate, sodium chloride and sodium nitrate crystals are respectively obtained by carrying out three-time crystallization on mother liquor obtained by sequentially carrying out one-effect, two-effect, three-effect and four-effect evaporation on the salt solution from the previous treatment system.
The utility model discloses technical scheme has following advantage:
1. the utility model provides a resource treatment device for industrial waste salt, which respectively obtains sodium sulfate, sodium chloride and sodium nitrate crystals by dissolving, chemically removing impurities, deeply removing impurities, concentrating and reducing organic matters, adsorbing, oxidizing and decoloring and multi-effect evaporation and crystallization in sequence; wherein, realize dividing the salt crystallization through the temperature control of evaporation process, utilize difference and the solubility of each salt of sodium chloride, sodium nitrate and sodium sulfate three-phase common saturation point under the different temperatures promptly, divide the salt crystallization, the purity and the whiteness degree of sodium chloride, sodium nitrate and the sodium sulfate that divide the salt crystallization to obtain all reach industrial grade standard moreover, but direct application makes the application the utility model provides an industrial salt after the resourceful treatment device of industry waste salt handles obtains effective utilization.
2. The utility model provides a resourceful treatment device of industry waste salt, wherein the edulcoration system adopts the mode of two-stage edulcoration, chemical edulcoration and microfiltration membrane promptly, and the resin adsorbs the processing technology who combines together, has effectively reduced the degree of difficulty and the cost of the preliminary treatment of industry waste salt, has purified heavy metal and impurity ion in the industry waste salt simultaneously, has improved the purity of salt product.
3. The utility model provides a resource treatment device of industrial waste salt, an organic matter removing system can remove most organic matters in the industrial waste salt by adopting a separation membrane interception mode, and the quality of a final product is ensured; and the filler added in the subsequent adsorption oxidation decoloration process can adsorb organic matters with chromophoric groups, plays a part in decoloration, has adsorption effect on phosphorus, ammonia, nitrogen and the like in the solution, further ensures the quality of the final product and is beneficial to the standard reaching of subsequent wastewater discharge.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flow chart of the industrial waste salt treatment device of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model provides a resourceful treatment device of industry waste salt, is including dissolving tank, chemical edulcoration system, degree of depth edulcoration system, organic matter concentration decrement system, absorption oxidation system and the evaporative crystallization system that connect gradually.
The chemical impurity removal system comprises a primary reactor, a primary clarifier, a secondary reactor, a secondary clarifier and a matched dosing device, and the salt solution primarily removes impurities such as heavy metals and suspended matters through the chemical impurity removal system; the deep impurity removal system comprises a microfiltration device, a resin adsorption device and a degassing device, and salt solution from the previous system is further subjected to impurity removal, carbon dioxide removal and the like through the deep impurity removal system; the organic matter concentration and decrement system is a membrane separation device, and an organic separation membrane is adopted to separate and remove most of organic matters; the adsorption and oxidation system comprises a filler adsorption device and an oxidation device, wherein the adsorption device is used for adsorbing fillers with large specific surface area and can adsorb residual organic matters, and the oxidation device decomposes the residual organic matters by adding an oxidant; the evaporative crystallization system is a multi-effect evaporative crystallization device;
preferably, the multi-effect evaporative crystallization device is a four-effect evaporative crystallization device, and sodium sulfate, sodium chloride and sodium nitrate crystals are respectively obtained by carrying out three-time crystallization on mother liquor obtained by sequentially carrying out one-effect, two-effect, three-effect and four-effect evaporation on the salt solution from the previous treatment system.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (5)
1. The utility model provides a resourceful treatment device of industry waste salt which characterized in that includes in proper order:
the dissolving tank is used for dissolving industrial waste salt to form a salt solution;
the chemical impurity removal system is used for removing impurities such as heavy metals, suspended matters and the like in a salt solution formed by dissolving waste salt;
the deep impurity removal system is used for removing impurities remained after the impurities are removed by the chemical impurity removal system;
the organic matter concentration and reduction system is used for removing organic matter impurities in the salt solution;
the adsorption oxidation system is used for oxidation decolorization and adsorption treatment of the salt solution;
an evaporative crystallization system; the method is used for evaporation treatment of salt solution to obtain a crystallized salt product, wherein the evaporative crystallization system is a multi-effect evaporative crystallization device.
2. The apparatus for recycling industrial waste salt according to claim 1, wherein: the chemical impurity removal system comprises a primary reactor, a primary clarifier, a secondary reactor, a secondary clarifier and a matched dosing device.
3. The apparatus for recycling industrial waste salt according to claim 1, wherein: the deep impurity removal system comprises a microfiltration device, a resin adsorption device and a degassing device.
4. The apparatus for recycling industrial waste salt according to claim 1, wherein: the organic matter concentration and decrement system is a membrane separation device.
5. The apparatus for recycling industrial waste salt according to claim 1, wherein: the adsorption oxidation system comprises a filler adsorption device and an oxidation device.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2020/128127 WO2021093773A1 (en) | 2019-11-15 | 2020-11-11 | Method and device for resourceful treatment of industrial waste salt |
| JP2021539088A JP7082717B2 (en) | 2019-11-15 | 2020-11-11 | Industrial waste salt recycling method and equipment |
| US17/384,827 US11332379B2 (en) | 2019-11-15 | 2021-07-26 | Industrial waste salt resourceful treatment method and device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911122109 | 2019-11-15 | ||
| CN2019111221091 | 2019-11-15 |
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| CN211688283U true CN211688283U (en) | 2020-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922129790.4U Active CN211688283U (en) | 2019-11-15 | 2019-12-02 | Resourceful treatment device of industry waste salt |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110844922A (en) * | 2019-11-15 | 2020-02-28 | 清大国华环境集团股份有限公司 | Method and equipment for recycling industrial waste salt |
| WO2021093773A1 (en) * | 2019-11-15 | 2021-05-20 | 清大国华环境集团股份有限公司 | Method and device for resourceful treatment of industrial waste salt |
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2019
- 2019-12-02 CN CN201922129790.4U patent/CN211688283U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110844922A (en) * | 2019-11-15 | 2020-02-28 | 清大国华环境集团股份有限公司 | Method and equipment for recycling industrial waste salt |
| WO2021093773A1 (en) * | 2019-11-15 | 2021-05-20 | 清大国华环境集团股份有限公司 | Method and device for resourceful treatment of industrial waste salt |
| US11332379B2 (en) | 2019-11-15 | 2022-05-17 | Go Higher Environment Group Co., Ltd. | Industrial waste salt resourceful treatment method and device |
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