CN216998034U - Evaporation concentration drying system and electroplating wastewater zero-discharge treatment system - Google Patents
Evaporation concentration drying system and electroplating wastewater zero-discharge treatment system Download PDFInfo
- Publication number
- CN216998034U CN216998034U CN202121503633.6U CN202121503633U CN216998034U CN 216998034 U CN216998034 U CN 216998034U CN 202121503633 U CN202121503633 U CN 202121503633U CN 216998034 U CN216998034 U CN 216998034U
- Authority
- CN
- China
- Prior art keywords
- concentration
- sludge
- evaporation
- collecting tank
- drying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The utility model discloses an evaporation, concentration and drying system and an electroplating wastewater zero-discharge treatment system, and belongs to the technical field of electroplating wastewater treatment. The evaporation concentration drying system comprises a wastewater collecting tank, a PH regulating tank, a plurality of lifting pumps, a sludge pump, a filter press, a filtrate collecting tank, a concentration evaporation device, a concentrated solution collecting tank, a concentration crystallization device, a sludge collecting tank and a sludge drying device, wherein the wastewater collecting tank is connected to the PH regulating tank through the lifting pump and then connected to the filter press through the sludge pump; the solid matter outlet is connected to the sludge collecting tank and is connected to the sludge drying equipment through the lifting pump. The waste water is greatly recycled, the quality of the produced water is stabilized, and the sludge production and the hazardous waste treatment cost are reduced.
Description
Technical Field
The utility model relates to the technical field of electroplating wastewater treatment, in particular to an evaporation, concentration and drying system and an electroplating wastewater zero-discharge treatment system.
Background
A large amount of waste water containing heavy metals, acids, alkalis and high COD organic matters is generated in the electroplating production process, the harm to the environment is large, the waste water can be discharged only after being strictly treated and reaching the standard, and a large amount of water resources are consumed in the electroplating production process.
In the traditional methods for treating electroplating wastewater by using a chemical method, an electrolytic method and the like, a certain amount of chemicals are added in the treatment process, and even if the items such as heavy metal, COD and the like reach the discharge standard, the TDS in the treated wastewater hardly reaches the discharge standard (although the index is not required by a plurality of places) which is less than 1600 specified by the state, so that the salinization of water and soil can be caused after the wastewater is discharged for a long time, and the consequences are also serious.
In the prior electroplating wastewater zero-discharge treatment process, the problems of high energy consumption, high operating cost, low water reuse rate, low water quality of produced water, easy generation of microorganisms for long-term recycling of water, odor and deterioration, need of regular replacement of fresh water and the like exist in different degrees.
Therefore, it is desirable to provide an evaporation, concentration and drying system for a zero discharge process of electroplating wastewater and a zero discharge treatment system of electroplating wastewater to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an evaporation concentration drying system and an electroplating wastewater zero-discharge treatment system, which realize the large-scale recovery and reuse of wastewater, stabilize the quality of produced water and greatly reduce the sludge production and the treatment cost of hazardous waste.
In order to realize the purpose, the following technical scheme is provided:
the utility model provides an evaporation concentration drying system, which is used for evaporation concentration drying treatment in an electroplating wastewater zero-discharge process and comprises a wastewater collecting tank, a PH regulating tank, a plurality of lifting pumps, a sludge pump, a filter press, a filtrate collecting tank, a concentration evaporation device, a concentrated solution collecting tank, a concentration crystallization device, a sludge collecting tank and a sludge drying device, wherein the wastewater collecting tank is connected to the PH regulating tank through a first lifting pump and then connected to the filter press through a sludge pump; and a solid matter outlet of the concentration and crystallization device is connected to the sludge collecting tank and is connected to the sludge drying device through a fourth lifting pump.
Further, the distillate outlet of the concentration and evaporation equipment is connected to a distillate collection tank.
Further, a distillate outlet of the concentration and crystallization device is connected to a distillate collecting tank.
Further, a distillate outlet of the sludge drying equipment is connected to a distillate collecting tank.
Further, the distillate collection tank is connected to a flotation separation system.
Further, a sludge outlet of the sludge drying device is connected to a sludge outsourcing treatment system outside the system.
Further, the pH adjusting tank can adjust the pH value of the solution to be more than 8.
Furthermore, the concentration evaporation equipment is mechanical vapor compression type low-temperature vacuum concentration evaporation equipment, and the concentration crystallization equipment is mechanical vapor compression type low-temperature vacuum concentration crystallization equipment.
Further, the sludge drying equipment is low-temperature sludge drying equipment.
The utility model also provides an electroplating wastewater zero-discharge treatment system, which comprises the evaporation, concentration and drying system in any technical scheme.
Compared with the prior art, the evaporation concentration drying system provided by the utility model has the advantages that the high COD waste treatment liquid in the electroplating pretreatment process, other comprehensive concentrated waste water and concentrated water generated by an RO system are collected in a centralized manner, the PH value is adjusted to be larger than 8, after solid-liquid separation, the liquid is subjected to vacuum concentration distillation, and the distillate returns to the acid-base waste pretreatment process for circular treatment. Concentrated solution produced in the process of concentration and distillation further enters concentration and crystallization equipment for treatment, solid matters produced by the concentration and crystallization equipment and solid matters produced by other procedures further enter sludge drying equipment for treatment, and finally produced solid dangerous wastes with the water content of less than 15 percent are treated by outsourcing. The complete separation of hazardous wastes is realized, and the discharge of harmful sewage of the electroplating wastewater is reduced. The evaporation concentration drying system can effectively remove grease dirt and scum in the wastewater, can well protect a subsequent zero-discharge membrane treatment system, greatly reduces the RO membrane cleaning frequency, greatly prolongs the service life of the membrane, reduces the operation cost, improves the wastewater recovery rate, stabilizes the water quality of produced water, and reduces the sludge production and the hazardous wastewater treatment cost.
Drawings
FIG. 1 is a schematic structural diagram of an air flotation separation system in an embodiment of the utility model.
Reference numerals:
1-a wastewater collection tank; 2-a first lift pump; 3-PH adjusting tank; 4-a sludge pump; 5, a filter press; 6-filtrate collection tank; 7-a second lift pump; 8-concentration and evaporation equipment; 9-concentrated solution collecting tank; 10-a third lift pump; 11-a concentration crystallization device; 12-a sludge collection tank; 13-a fourth lift pump; 14-sludge drying equipment.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment provides a plating wastewater zero-emission treatment system, which comprises a pretreatment system, a membrane treatment system, an EDI (EDI + UV) system and an evaporation concentration drying system, wherein, as shown in FIG. 1, the evaporation concentration drying system of the embodiment comprises a wastewater collection tank 1, a PH regulation tank, a plurality of lift pumps, a sludge pump 4, a filter press 5, a filtrate collection tank 6, a concentration evaporation device 8, a concentrated solution collection tank 9, a concentration crystallization device 11, a sludge collection tank 12 and a sludge drying device 14, wherein the wastewater collection tank 1 is connected to the PH regulation tank 3 through a first lift pump 2, and is connected to the filter press 5 through the sludge pump 4, a filtrate outlet of the filter press 5 is connected to the filtrate collection tank 6, a filter cake outlet of the filter press 5 is connected to the sludge collection tank 12, the filtrate collection tank 6 is connected to the concentration evaporation device 8 through a second lift pump 7, and a concentrated solution outlet of the concentration evaporation device 8 is connected to the concentrated solution collection tank 9, then is connected to a concentration crystallization device 11 through a third lift pump 10; the solid matter outlet of the concentration and crystallization device 11 is connected to a sludge collecting tank 12, and is connected to a sludge drying device 14 through a fourth lift pump 13.
Preferably, the distillate outlet of the concentration and evaporation device 8, the distillate outlet of the concentration and crystallization device 11 and the distillate outlet of the sludge drying device 14 are connected to a distillate collecting tank. More preferably, the distillate collecting tank is connected to the air flotation separation system, and specifically, the distillate collecting tank returns the wastewater collecting tank 1 of the air flotation separation system through the lift pump for cyclic processing, and through heavy solid-liquid separation processing, the recycling rate of wastewater of the electroplating wastewater zero-discharge processing system is greatly improved, and the quality of produced water is stabilized.
Further, a sludge outlet of the sludge drying equipment 14 is connected to a sludge outsourcing treatment system outside the system, and the finally discharged sludge is solid hazardous waste with the water content of about 10-15% after the heavy dehydration and drying treatment of the concentration evaporation equipment 8, the concentration crystallization equipment 11 and the sludge drying equipment 14, and then is discharged for external treatment, so that the harmfulness is low, and the sludge production and hazardous waste treatment cost are greatly reduced.
Preferably, the PH adjusting tank 3 adjusts the PH of the wastewater liquid entering the concentration and evaporation apparatus 8 to be greater than 8 in order to avoid corrosion of the concentration and evaporation apparatus 8. Optionally, in order to improve the effect of concentration and dehydration, the concentration and evaporation equipment 8 is mechanical vapor compression type low-temperature vacuum concentration and evaporation equipment which has the characteristics of low operation cost, high efficiency, high concentration ratio and the like, the operation cost of distilling 1 ton of wastewater is only about 60 yuan, and the concentration ratio can reach 95%. The concentration and crystallization device 11 is a mechanical vapor compression type low-temperature vacuum concentration and crystallization device, and the sludge drying device 14 is a low-temperature sludge drying device.
In the evaporation, concentration and drying system provided by this embodiment, the high COD waste treatment liquid in the electroplating pretreatment process, other comprehensive concentrated wastewater, and concentrated water generated by the RO system are collected in a centralized manner and the PH value is adjusted to be greater than 8, after solid-liquid separation, the liquid is subjected to vacuum concentration and distillation, and the distillate returns to the acid-base wastewater pretreatment process for cyclic treatment. Concentrated solution generated in the concentration and distillation process further enters the concentration and crystallization equipment 11 for treatment, solid matters produced by the concentration and crystallization equipment 11 and solid matters produced in other processes further enter the sludge drying equipment 14 for treatment, and finally generated solid dangerous waste with the water content of less than 15% is subjected to outsourcing treatment. The complete separation of hazardous wastes is realized, and the discharge of harmful sewage of the electroplating wastewater is reduced. The evaporation concentration mummification system of this embodiment can effectively get rid of the dirty and dross of grease class in the waste water, about playing good protection to subsequent zero release membrane treatment system, reduces RO membrane washing frequency by a wide margin, prolongs the life of membrane by a wide margin, reduces the running cost, improves the waste water recovery rate of utilization, has stabilized product water quality of water, reduces mud production volume and danger waste disposal cost.
The technological process of the evaporation, concentration and drying system of the embodiment is as follows:
all high COD's such as plating line deoiling degreasing solution concentrated waste water, laboratory waste water, other thick waste water of synthesizing collect waste water collecting vat 1, get into PH adjustment tank 3 through first elevator pump 2, for avoiding leading to the fact the corruption to concentrated evaporation equipment 8, adjustment solution PH value is greater than 8, then gets into pressure filter 5 solid-liquid separation through sludge pump 4, and filtrating gets into filtrating collecting vat 6, and the solid-state thing in filtrating collecting vat 6 is collected and is sent to mud collecting vat 12 and continue to handle.
And the filtrate in the filtrate collecting tank 6 enters a concentration and evaporation device 8 through a second lifting pump 7, the evaporated concentrated solution enters a concentration and crystallization device 11 through a concentrated solution collecting tank 9 and a third lifting pump 10 for further concentration treatment, and the concentrated solid matter enters a sludge collecting tank 12.
In order to reduce the water content of solid waste, the solid waste such as sludge in the sludge collecting tank 12 is conveyed into a sludge drying device 14 by a fourth lift pump 13 for further drying and dehydration treatment, and finally the sludge (solid hazardous waste) with the water content of about 10-15% is subjected to outsourcing treatment.
And the distillate generated by the concentration evaporation equipment 8, the concentration crystallization equipment 11 and the sludge drying equipment 14 is uniformly collected and then returns to the wastewater collection tank 1 of the air floatation separation system through a lifting pump for circular treatment.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in some detail by the above embodiments, the utility model is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the utility model, and the scope of the utility model is determined by the scope of the appended claims.
Claims (10)
1. An evaporation concentration drying system is used for evaporation concentration drying treatment in an electroplating wastewater zero-discharge process and is characterized by comprising a wastewater collecting tank (1), a PH regulating tank, a plurality of lifting pumps, a sludge pump (4), a filter press (5), a filtrate collecting tank (6), concentration evaporation equipment (8), a concentrated solution collecting tank (9), concentration crystallization equipment (11), a sludge collecting tank (12) and sludge drying equipment (14), wherein the wastewater collecting tank (1) is connected to the PH regulating tank (3) through a first lifting pump (2), and is connected to the filter press (5) through the sludge pump (4), a filtrate outlet of the filter press (5) is connected to the filtrate (6), a filter cake outlet of the filter press (5) is connected to the sludge collecting tank (12), and the filtrate (6) is connected to the concentration evaporation equipment (8) through a second lifting pump (7), a concentrated solution outlet of the concentrated evaporation equipment (8) is connected to a concentrated solution collecting tank (9), and then is connected to concentrated crystallization equipment (11) through a third lifting pump (10); and a solid matter outlet of the concentration and crystallization device (11) is connected to the sludge collecting tank (12) and is connected to the sludge drying device (14) through a fourth lifting pump (13).
2. The evaporation, concentration and drying system according to claim 1, characterized in that the distillate outlet of the concentration and evaporation equipment (8) is connected to a distillate collection tank.
3. The evaporative concentration drying system according to claim 2, wherein the distillate outlet of the concentration crystallization device (11) is connected to a distillate collection tank.
4. The evaporative concentrating drying system according to claim 3, wherein the distillate outlet of the sludge drying apparatus (14) is connected to a distillate collection tank.
5. The evaporative concentration drying system of claim 4, wherein the distillate collection tank is connected to a flotation separation system.
6. The evaporative concentrating drying system according to claim 1, wherein the sludge outlet of the sludge drying device (14) is connected to a sludge outsourcing treatment system outside the system.
7. The evaporative concentration drying system as set forth in claim 5, wherein the pH adjusting tank (3) is capable of adjusting the pH of the solution to be greater than 8.
8. The evaporation, concentration and drying system as claimed in claim 7, wherein the concentration and evaporation equipment (8) is a mechanical vapor compression type low-temperature vacuum concentration and evaporation equipment, and the concentration and crystallization equipment (11) is a mechanical vapor compression type low-temperature vacuum concentration and crystallization equipment.
9. The evaporative concentration drying system according to claim 1, wherein the sludge drying apparatus (14) is a low temperature sludge drying apparatus.
10. A zero discharge treatment system for electroplating wastewater, which is characterized by comprising the evaporation, concentration and drying system as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121503633.6U CN216998034U (en) | 2021-07-01 | 2021-07-01 | Evaporation concentration drying system and electroplating wastewater zero-discharge treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121503633.6U CN216998034U (en) | 2021-07-01 | 2021-07-01 | Evaporation concentration drying system and electroplating wastewater zero-discharge treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216998034U true CN216998034U (en) | 2022-07-19 |
Family
ID=82366834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121503633.6U Active CN216998034U (en) | 2021-07-01 | 2021-07-01 | Evaporation concentration drying system and electroplating wastewater zero-discharge treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216998034U (en) |
-
2021
- 2021-07-01 CN CN202121503633.6U patent/CN216998034U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103319042B (en) | High-salt complex wastewater reuse and zero discharge integrated equipment and technology | |
| CN103449678A (en) | Agricultural equipment coating wastewater treatment technology | |
| CN102120668A (en) | Printed circuit board integrated wastewater resource utilization method | |
| CN106495404A (en) | A kind of processing method of the high salinity cupric organic wastewater of highly acidity | |
| CN110683716A (en) | Wastewater treatment process for wastewater generated by automobile accessory coating production line | |
| CN103214153A (en) | Regenerative cycle and utilization method for papermaking deep-treatment wastewater | |
| CN207294524U (en) | A kind of landfill leachate film processing system | |
| CN103663834A (en) | Treating method for landfill leachate | |
| CN113754187A (en) | Advanced treatment and recycling process for wastewater of iron and steel enterprises | |
| CN216998034U (en) | Evaporation concentration drying system and electroplating wastewater zero-discharge treatment system | |
| CN205575835U (en) | Electroplating wastewater treatment system | |
| CN110590074A (en) | High-concentration pickle wastewater treatment process | |
| CN111253177A (en) | Method for preparing compound organic fertilizer by using river sludge | |
| CN216934744U (en) | Isopropyl alcohol batch recovery system | |
| CN103373774A (en) | Membrane-method high-powered recycling process for fluoride-containing wastewater generated by photovoltaic industry and dedicated system of membrane-method high-powered recycling process | |
| CN104724881A (en) | Treatment method for high salinity industrial wastewater | |
| CN216106469U (en) | Air floatation separation system and electroplating wastewater zero-discharge treatment system | |
| CN112679019B (en) | Garbage leachate total treatment method and system | |
| CN108726790A (en) | Low concentration electroplated heavy metals wastewater treatment heavy metal recovery technique | |
| CN103043849A (en) | Method for recycling wastewater from papermaking without discharging | |
| CN104276687A (en) | System and method for recycling animal protein feed from casing processing waste liquid | |
| CN110054353B (en) | Garbage incineration power generation leachate treatment system | |
| CN216106468U (en) | Electroplating effluent zero release processing system | |
| CN105776684A (en) | Urban sewage treatment and resource recycling method | |
| CN1803651A (en) | Zero-discharge coked wastewater treatment system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |