CN111233240A - Treatment device and treatment method for liquid hazardous waste pretreatment - Google Patents
Treatment device and treatment method for liquid hazardous waste pretreatment Download PDFInfo
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- CN111233240A CN111233240A CN202010135498.8A CN202010135498A CN111233240A CN 111233240 A CN111233240 A CN 111233240A CN 202010135498 A CN202010135498 A CN 202010135498A CN 111233240 A CN111233240 A CN 111233240A
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- waste liquid
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- reaction kettle
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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
- C02F1/00—Treatment of water, waste water, or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
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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
- 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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention relates to a treatment device and a treatment method for liquid hazardous waste pretreatment, which comprises an exothermic reaction kettle, an endothermic reaction kettle, a waste liquid neutralization system, an activated carbon adding device and a liquid discharge system, wherein jackets are respectively arranged outside the exothermic reaction kettle and the endothermic reaction kettle, the waste liquid neutralization system comprises an acid liquid adding device and an alkali liquid adding device, the liquid discharge system comprises a supernatant receiving tank, a vacuum pump, a supernatant receiving tank and a waste liquid pump, the invention performs solid-liquid separation on the waste liquid containing more solids, the waste liquid with high heavy metal content is treated to remove the heavy metals, the property of the waste liquid is improved, the viscosity of the waste liquid is reduced, the PH value of the waste liquid is neutralized, can be widely used for the pretreatment of acidic waste liquid, alkaline waste liquid, solid-containing waste liquid and heavy metal-containing waste liquid, and then the mixture is sent to a downstream treatment process, so that the downstream incineration and physical and chemical processes run smoothly, and the continuous running time of an incineration and physical and chemical treatment system is prolonged.
Description
Technical Field
The invention relates to the technical field of hazardous waste incineration pretreatment, in particular to a treatment device and a treatment method for liquid hazardous waste pretreatment.
Background
With the high-speed increase of economy in China, the increase of various dangerous wastes is also accelerated continuously, huge pollution risks are brought to environmental safety, and a large amount of organic or inorganic waste liquid can be generated in industrial production such as printing and dyeing, papermaking, medicines, pesticides, chemical industry and the like at present, the waste liquid is various in variety, various in properties and complex in components, and a great problem is brought to the treatment of a comprehensive dangerous waste disposal center.
At present, the common waste liquid treatment modes of the comprehensive hazardous waste treatment center generally comprise incineration modes, materialization modes and the like, but the waste liquid generally does not undergo pretreatment in the comprehensive hazardous waste treatment center due to the fact that the waste liquid contains various impurities, and the waste liquid directly enters a materialization and incineration system to treat the waste liquid, so that the phenomena of pipeline blockage, a conveying pump, a waste liquid spray gun and the like frequently occur, and the system cannot continuously run. Because the comprehensive hazardous waste disposal center faces various customers, the types of the liquid hazardous wastes are very various, and the yield of various hazardous waste liquids is not large, the comprehensive hazardous waste disposal center is not suitable for being independently provided with a set of treatment device specially aiming at a certain waste liquid from the economic point of view. In summary, designing a device and a method for pretreating various waste liquids with different properties ensures smooth operation of downstream treatment processes, which is a problem to be solved urgently in the industry.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art and provides a treatment device and a treatment method for liquid hazardous waste pretreatment.
The invention is realized by the following technical scheme:
the utility model provides a processing apparatus of liquid hazardous waste preliminary treatment, its characterized in that, including exothermic reaction cauldron, endothermic reation kettle, waste liquid neutralization system, active carbon feeding device and flowing back system, exothermic reaction cauldron and endothermic reation kettle all are equipped with the clamp cover outward, waste liquid neutralization system includes acidizing fluid feeding device and alkali lye feeding device, acidizing fluid feeding device is linked together with exothermic reaction cauldron and endothermic reation kettle respectively, alkali lye feeding device is linked together with exothermic reaction cauldron and endothermic reation kettle respectively, exothermic reaction cauldron and endothermic reation kettle are linked together with active carbon feeding device respectively, the flowing back system includes supernatant receiving tank, vacuum pump, supernatant receiving tank and waste liquid pump, the supernatant receiving tank is linked together with exothermic reaction cauldron and endothermic reation kettle respectively through the vacuum pump, the supernatant receiving tank is linked together with the supernatant receiving tank, the supernatant receiving tank is connected with a waste liquid pump.
According to the technical scheme, preferably, the exothermic reaction kettle and the endothermic reaction kettle are made of enamel materials.
According to the technical scheme, preferably, the exothermic reaction kettle and the endothermic reaction kettle are respectively communicated with a nitrogen protection system.
According to the technical scheme, preferably, the bottom ends of the exothermic reaction kettle and the endothermic reaction kettle are respectively communicated with a solid receiving groove.
The patent also discloses a treatment method for pretreating the liquid hazardous waste, which is characterized by comprising the following steps: a. putting the nitrogen protection systems in the exothermic reaction kettle and the endothermic reaction kettle into operation; b. judging the reaction type of the waste liquid pretreatment, and sending the waste liquid to a corresponding heat-releasing reaction kettle or heat-absorbing reaction kettle; c. starting a stirrer in the exothermic reaction kettle or the endothermic reaction kettle; d. judging the acidity and alkalinity of the waste liquid, and performing neutralization treatment by using the waste liquid neutralization system; e. when the content of heavy metal in the waste liquid reaches a preset value, starting the activated carbon adding device, and adding activated carbon powder into the heat-releasing reaction kettle or the heat-absorbing reaction kettle; f. and judging whether the waste liquid contains a solid phase or not, and performing corresponding liquid discharge operation.
According to the above technical solution, preferably, the neutralization process in step d includes: when the waste liquid is acidic, adding the alkali liquor in the alkali liquor adding device into an exothermic reaction kettle or an endothermic reaction kettle; and when the waste liquid is slightly alkaline, adding the acid liquid in the acid liquid adding device into an exothermic reaction kettle or an endothermic reaction kettle.
According to the above technical solution, preferably, step f includes: when the waste liquid contains solid phase, carrying out solid-liquid separation treatment; and when the waste liquid does not contain a solid phase, putting the waste liquid into the supernatant receiving tank from the exothermic reaction kettle or the endothermic reaction kettle, and pumping the waste liquid to a downstream processing procedure.
According to the above technical solution, preferably, the solid-liquid separation process includes: standing the waste liquid in the exothermic reaction kettle or the endothermic reaction kettle, and starting the vacuum pump to suck the supernatant liquid into a supernatant liquid receiving tank; sending the supernatant in the supernatant receiving tank to a supernatant receiving tank, and pumping the supernatant to a downstream processing procedure through the waste liquid; the rest solid phase substances are sent into a solid receiving groove from the bottom end of the exothermic reaction kettle or the endothermic reaction kettle; and closing the vacuum pump.
The invention has the beneficial effects that:
the invention is a totally-enclosed treatment system, is safe and environment-friendly, has low operation cost, can widely pretreat acidic waste liquid, alkaline waste liquid, solid-containing waste liquid and heavy metal-containing waste liquid by carrying out solid-liquid separation on the waste liquid with more solids and carrying out weight removal treatment on the waste liquid with higher heavy metal content, improves the properties of the waste liquid, reduces the viscosity of the waste liquid and neutralizes the pH value of the waste liquid, and then sends the pretreated acidic waste liquid, alkaline waste liquid, solid-containing waste liquid and heavy metal-containing waste liquid into a downstream treatment process, so that the downstream incineration and physicochemical processes can be smoothly operated, and the continuous.
Drawings
FIG. 1 is a schematic process flow diagram of the present invention.
In the figure: 1. an exothermic reaction kettle; 2. a heat absorption reaction kettle; 3. a solids receiving trough; 4. a supernatant receiving tank; 5. a supernatant receiving tank; 6. a waste liquid pump; 7. an alkali liquor feeding device; 8. an acid liquor feeding device; 9. a waste liquid barrel; 10. an alkali liquor feeding pump; 11. an acid liquor feeding pump; 12. a waste liquid discharge pump; 13. an activated carbon adding device; 14. a vacuum pump.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments.
As shown in the figure, the invention comprises an exothermic reaction kettle 1, an endothermic reaction kettle 2, a waste liquid neutralization system, an activated carbon adding device 13 and a liquid drainage system, wherein the exothermic reaction kettle 1 and the endothermic reaction kettle 2 are respectively communicated with a feeding pipeline, the feeding pipeline is communicated with a waste liquid barrel 9 through a waste liquid unloading pump 12, jackets are respectively arranged outside the exothermic reaction kettle 1 and the endothermic reaction kettle 2, in the embodiment, the two reaction kettles are respectively provided with a water cooling system and a steam heating system in a jacket manner, the two reaction kettles can adapt to the heating reaction condition and the endothermic reaction condition in the pretreatment, a stirrer is respectively arranged in the two reaction kettles, the reactions in the two reaction kettles can be fully carried out, the waste liquid neutralization system comprises an acid liquid adding device 8 and an alkali liquid adding device 7, the acid liquid adding device 8 is respectively communicated with the exothermic reaction kettle 1 and the endothermic reaction kettle 2, the alkali liquid adding device 7 is respectively communicated with the exothermic reaction kettle 1 and the, exothermic reaction kettle 1 and endothermic reation kettle 2 are linked together with active carbon dosing unit 13 respectively, the flowing back system includes that the supernatant receives jar 4, vacuum pump 14, supernatant receiving tank 5 and waste liquid pump 6, the supernatant is received jar 4 and is linked together with exothermic reaction kettle 1 and endothermic reation kettle 2 respectively through vacuum pump 14, supernatant receiving tank 5 is linked together with supernatant receiving tank 4, and supernatant receiving tank 5 is linked together with exothermic reaction kettle 1 and endothermic reation kettle 2 bottom simultaneously, supernatant receiving tank 5 links to each other with waste liquid pump 6. The invention is a totally-enclosed treatment system, is safe and environment-friendly, has low operation cost, can widely pretreat acidic waste liquid, alkaline waste liquid, solid-containing waste liquid and heavy metal-containing waste liquid by carrying out solid-liquid separation on the waste liquid with more solids and carrying out weight removal treatment on the waste liquid with higher heavy metal content, improves the properties of the waste liquid, reduces the viscosity of the waste liquid and neutralizes the pH value of the waste liquid, and then sends the pretreated acidic waste liquid, alkaline waste liquid, solid-containing waste liquid and heavy metal-containing waste liquid into a downstream treatment process, so that the downstream incineration and physicochemical processes can be smoothly operated, and the continuous.
According to the above embodiment, the exothermic reaction vessel 1 and the endothermic reaction vessel 2 are preferably made of enamel, and can resist corrosion of acidic waste liquid or alkaline waste liquid.
According to the above embodiment, preferably, the exothermic reaction kettle 1 and the endothermic reaction kettle 2 are respectively communicated with a nitrogen protection system, so as to reduce the contact between the waste liquid and the air and increase the safety and environmental protection requirements of the system operation.
According to the above embodiment, preferably, the bottom ends of the exothermic reaction kettle 1 and the endothermic reaction kettle 2 are respectively communicated with the solid receiving tank 3, and after solid-liquid separation, the residual solid phase material is sent from the two reaction kettles to the solid receiving tank 3, so as to ensure continuous and stable operation of the system.
The patent also discloses a treatment method for pretreating the liquid hazardous waste, which is characterized by comprising the following steps: a. putting the nitrogen protection systems in the exothermic reaction kettle 1 and the endothermic reaction kettle 2 into operation; b. judging the reaction type of waste liquid pretreatment, conveying the waste liquid to a corresponding exothermic reaction kettle 1 or endothermic reaction kettle 2 by using a waste liquid unloading pump 12, starting a water cooling system or a steam heating system as required, conveying the waste liquid to the exothermic reaction kettle 1 if the waste liquid pretreatment is an exothermic reaction, and conveying the waste liquid to the endothermic reaction kettle 2 if the waste liquid pretreatment is an endothermic reaction; c. starting a stirrer in the exothermic reaction kettle 1 or the endothermic reaction kettle 2; d. judging the acidity and alkalinity of the waste liquid, and performing neutralization treatment by using the waste liquid neutralization system; e. when the content of heavy metal in the waste liquid reaches a preset value, starting the activated carbon adding device 13, and adding activated carbon powder into the heat-releasing reaction kettle 1 or the heat-absorbing reaction kettle 2; f. and judging whether the waste liquid contains a solid phase or not, and performing corresponding liquid discharge operation.
According to the above embodiment, preferably, the neutralization process in step d includes: when the waste liquid is acidic, adding the alkali liquor in the alkali liquor adding device 7 into the exothermic reaction kettle 1 or the endothermic reaction kettle 2 through an alkali liquor adding pump 10; and when the waste liquid is slightly alkaline, adding the acid liquid in the acid liquid adding device 8 into the heat-releasing reaction kettle 1 or the heat-absorbing reaction kettle 2 through an acid liquid adding pump 11.
According to the above embodiment, preferably, step f includes: when the waste liquid contains solid phase, carrying out solid-liquid separation treatment; when the waste liquid does not contain a solid phase, the waste liquid is put into the supernatant receiving tank 5 from the exothermic reaction tank 1 or the endothermic reaction tank 2, and sent to a downstream process by the waste liquid pump 6.
According to the above embodiment, preferably, the solid-liquid separation process includes: standing the waste liquid in the exothermic reaction kettle 1 or the endothermic reaction kettle 2 to separate solid from liquid in the reaction kettle, starting the vacuum pump 14 to pump the supernatant liquid to the supernatant liquid receiving tank 4; sending the supernatant in the supernatant receiving tank 4 to a supernatant receiving tank 5, and sending the supernatant to a downstream processing procedure through the waste liquid pump 6; the rest solid phase substances are sent into a solid receiving groove 3 from the bottom end of the exothermic reaction kettle 1 or the endothermic reaction kettle 2; the vacuum pump 14 is turned off.
The invention is a totally-enclosed treatment system, is safe and environment-friendly, has low operation cost, can widely pretreat acidic waste liquid, alkaline waste liquid, solid-containing waste liquid and heavy metal-containing waste liquid by carrying out solid-liquid separation on the waste liquid with more solids and carrying out weight removal treatment on the waste liquid with higher heavy metal content, improves the properties of the waste liquid, reduces the viscosity of the waste liquid and neutralizes the pH value of the waste liquid, and then sends the pretreated acidic waste liquid, alkaline waste liquid, solid-containing waste liquid and heavy metal-containing waste liquid into a downstream treatment process, so that the downstream incineration and physicochemical processes can be smoothly operated, and the continuous.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides a processing apparatus of liquid hazardous waste preliminary treatment, its characterized in that, including exothermic reaction cauldron, endothermic reation kettle, waste liquid neutralization system, active carbon feeding device and flowing back system, exothermic reaction cauldron and endothermic reation kettle all are equipped with the clamp cover outward, waste liquid neutralization system includes acidizing fluid feeding device and alkali lye feeding device, acidizing fluid feeding device is linked together with exothermic reaction cauldron and endothermic reation kettle respectively, alkali lye feeding device is linked together with exothermic reaction cauldron and endothermic reation kettle respectively, exothermic reaction cauldron and endothermic reation kettle are linked together with active carbon feeding device respectively, the flowing back system includes supernatant receiving tank, vacuum pump, supernatant receiving tank and waste liquid pump, the supernatant receiving tank is linked together with exothermic reaction cauldron and endothermic reation kettle respectively through the vacuum pump, the supernatant receiving tank is linked together with the supernatant receiving tank, the supernatant receiving tank is connected with a waste liquid pump.
2. The apparatus for pretreating liquid hazardous waste according to claim 1, wherein the exothermic reaction vessel and the endothermic reaction vessel are made of enamel.
3. The apparatus for pretreating liquid hazardous waste according to claim 2, wherein the exothermic reaction kettle and the endothermic reaction kettle are respectively connected with a nitrogen protection system.
4. The apparatus for pretreating liquid hazardous waste according to claim 3, wherein the bottom ends of the exothermic reaction vessel and the endothermic reaction vessel are respectively communicated with a solid receiving tank.
5. A method for pretreating liquid hazardous waste by using the apparatus for pretreating liquid hazardous waste according to claim 4, comprising the steps of: a. putting the nitrogen protection systems in the exothermic reaction kettle and the endothermic reaction kettle into operation; b. judging the reaction type of the waste liquid pretreatment, and sending the waste liquid to a corresponding heat-releasing reaction kettle or heat-absorbing reaction kettle; c. starting a stirrer in the exothermic reaction kettle or the endothermic reaction kettle; d. judging the acidity and alkalinity of the waste liquid, and performing neutralization treatment by using the waste liquid neutralization system; e. when the content of heavy metal in the waste liquid reaches a preset value, starting the activated carbon adding device, and adding activated carbon powder into the heat-releasing reaction kettle or the heat-absorbing reaction kettle; f. and judging whether the waste liquid contains a solid phase or not, and performing corresponding liquid discharge operation.
6. The method for the pre-treatment of liquid hazardous waste according to claim 5, wherein the neutralization treatment in step d comprises: when the waste liquid is acidic, adding the alkali liquor in the alkali liquor adding device into an exothermic reaction kettle or an endothermic reaction kettle; and when the waste liquid is slightly alkaline, adding the acid liquid in the acid liquid adding device into an exothermic reaction kettle or an endothermic reaction kettle.
7. A method for the pre-treatment of liquid hazardous waste according to claim 6, wherein step f comprises: when the waste liquid contains solid phase, carrying out solid-liquid separation treatment; and when the waste liquid does not contain a solid phase, putting the waste liquid into the supernatant receiving tank from the exothermic reaction kettle or the endothermic reaction kettle, and pumping the waste liquid to a downstream processing procedure.
8. A process for the pre-treatment of liquid hazardous waste according to claim 7, characterized in that said solid-liquid separation treatment comprises: standing the waste liquid in the exothermic reaction kettle or the endothermic reaction kettle, and starting the vacuum pump to suck the supernatant liquid into a supernatant liquid receiving tank; sending the supernatant in the supernatant receiving tank to a supernatant receiving tank, and pumping the supernatant to a downstream processing procedure through the waste liquid; the rest solid phase substances are sent into a solid receiving groove from the bottom end of the exothermic reaction kettle or the endothermic reaction kettle; and closing the vacuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010135498.8A CN111233240A (en) | 2020-03-02 | 2020-03-02 | Treatment device and treatment method for liquid hazardous waste pretreatment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010135498.8A CN111233240A (en) | 2020-03-02 | 2020-03-02 | Treatment device and treatment method for liquid hazardous waste pretreatment |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001259072A (en) * | 2000-03-15 | 2001-09-25 | Sumitomo Heavy Ind Ltd | Treatment method for hazardous waste |
| CN103086545A (en) * | 2013-02-28 | 2013-05-08 | 曾嵘斌 | Method and device for removing and recovering heavy metal in waste water through regenerated active carbon |
| CN103910446A (en) * | 2012-12-31 | 2014-07-09 | 北京清大国华环保科技有限公司 | Method and device for modular programmed treatment of heavy metal waste liquid |
| CN205398362U (en) * | 2016-03-09 | 2016-07-27 | 朱金波 | Chemistry experiment waste liquid treatment device of high school |
| CN105858779A (en) * | 2016-04-15 | 2016-08-17 | 江南大学 | Method for recycling metal from low-concentration heavy metal ion wastewater |
| CN106348490A (en) * | 2016-09-09 | 2017-01-25 | 扬州大学 | Laboratory heavy metal waste liquid treatment integrated machine |
| CN208857043U (en) * | 2018-08-01 | 2019-05-14 | 北京市环境保护监测中心 | Waste liquid storage facilities |
-
2020
- 2020-03-02 CN CN202010135498.8A patent/CN111233240A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001259072A (en) * | 2000-03-15 | 2001-09-25 | Sumitomo Heavy Ind Ltd | Treatment method for hazardous waste |
| CN103910446A (en) * | 2012-12-31 | 2014-07-09 | 北京清大国华环保科技有限公司 | Method and device for modular programmed treatment of heavy metal waste liquid |
| CN103086545A (en) * | 2013-02-28 | 2013-05-08 | 曾嵘斌 | Method and device for removing and recovering heavy metal in waste water through regenerated active carbon |
| CN205398362U (en) * | 2016-03-09 | 2016-07-27 | 朱金波 | Chemistry experiment waste liquid treatment device of high school |
| CN105858779A (en) * | 2016-04-15 | 2016-08-17 | 江南大学 | Method for recycling metal from low-concentration heavy metal ion wastewater |
| CN106348490A (en) * | 2016-09-09 | 2017-01-25 | 扬州大学 | Laboratory heavy metal waste liquid treatment integrated machine |
| CN208857043U (en) * | 2018-08-01 | 2019-05-14 | 北京市环境保护监测中心 | Waste liquid storage facilities |
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