CN215798939U

CN215798939U - Integrated electro-catalysis waste water removes hard zero discharge apparatus

Info

Publication number: CN215798939U
Application number: CN202121361561.6U
Authority: CN
Inventors: 姬保江; 姬克瑶
Original assignee: Hainan Hehe Environmental Technology Co ltd
Current assignee: Hainan Hehe Environmental Technology Co ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2022-02-11
Anticipated expiration: 2031-06-18

Abstract

The utility model discloses an integrated electro-catalysis wastewater hardness-removing zero-emission device which comprises a pretreatment device, an adsorption device, an electro-catalysis reactor and an integrated membrane stack, wherein a water outlet of the pretreatment device is connected with a water inlet of the adsorption device, a liquid inlet of the adsorption device is connected with a resolving liquid tank, a liquid outlet of the adsorption device is connected with the resolving liquid tank, a liquid outlet of the resolving liquid tank is connected to a liquid inlet of the electro-catalysis reactor, a liquid outlet of the electro-catalysis reactor is connected to the integrated membrane stack, a concentrated water port of the integrated membrane stack is connected back to the resolving liquid tank, and a pure water port of the integrated membrane stack is connected to a clear water tank. The device can reduce the wastewater discharge of enterprises, save water resources and reduce production cost, and can realize changing waste into valuables, change the wastewater into resources, reduce the solid waste floor area and the management cost, and improve the reliability and the stability of the chemical production device.

Description

Integrated electro-catalysis waste water removes hard zero discharge apparatus

Technical Field

The utility model relates to the technical field of industrial water treatment, in particular to an integrated electro-catalysis wastewater hardness removal zero-emission device.

Background

Under the condition that the requirements of environmental protection policies are increasingly strict, water conservation and emission reduction, energy conservation and consumption reduction and carbon emission reduction are one of the primary tasks of industrial water treatment, and compared with the traditional technology, high-hardness wastewater treatment is a difficult problem which puzzles the water treatment industry.

At present, more high-concentration wastewater treatment methods are adopted, such as membrane separation, evaporative crystallization, a chemical precipitation method, an adsorption method, an ion exchange method, an oxidation method, an extraction method and the like are generally adopted, the processes are all puzzled by a hardness removal technology, the traditional hardness removal technology generally adopts a dosing method and an ion exchange method for treatment, but the dosing method has the problems of large dosing amount, PH adjustment, high operation cost, unstable operation, substandard water quality, large waste residue and the like; the ion exchange method generates a large amount of high-salt and high-hardness waste liquid, and finally needs to adopt a chemical method for treatment.

Among the prior art, the name is a space furnace gasification ash water removes hard device, and utility model patent and the name that publication number is CN209383527U are a coal gasifier waste water treatment and resource utilization device, and utility model patent that publication number is CN209307148U can solve the hardness problem of aquatic, nevertheless has a large amount of waste liquids to produce when handling waste water, need adopt chemical dosing method to handle, has running cost height, the medicament volume is big, callback pH value, chloride ion enrichment, the basicity is high, analytic system easily the dirty stifled scheduling problem of scaling.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned problem that prior art exists, this application provides an integrated electro-catalysis waste water removes hard zero release, and it adopts electro-catalysis to handle hardness ion, does not add medicine, not adjust pH value, degradable COD, degradation ammonia nitrogen, does not have the chloride ion enrichment scheduling problem.

In order to achieve the purpose, the technical scheme of the application is as follows: the utility model provides an integrated electro-catalysis waste water removes hard zero discharge apparatus, includes preprocessing device, adsorption equipment, electro-catalysis reactor and integrated membrane heap, preprocessing device's delivery port links to each other with adsorption equipment's water inlet, adsorption equipment's inlet links to each other with analytic cistern, and adsorption equipment's liquid outlet links to each other with analytic cistern, and the liquid outlet of this analytic cistern is connected to electro-catalysis reactor's inlet, electro-catalysis reactor's liquid outlet is connected to integrated membrane heap, integrated membrane heap's dense mouth links back to analytic cistern, and integrated membrane heap's pure water mouth is connected to the clear water groove.

Furthermore, the integrated membrane stack comprises an ultrafiltration membrane, a nanofiltration membrane and a reverse osmosis membrane.

Furthermore, a water inlet of the pretreatment device is connected with the homogenization tank through a raw water pump, and a wastewater outlet of the pretreatment device is connected back to the homogenization tank through a wastewater collection tank.

Furthermore, a water outlet pipeline of the pretreatment device is connected back to the top of the pretreatment device through a backwashing pipeline.

Furthermore, the pretreatment device is formed by connecting one or more of a multi-medium filter, a sand filter, a centrifugal machine, a fiber filter and a ceramic membrane in parallel.

Furthermore, the adsorption device comprises a plurality of adsorption tanks connected in parallel, and the adsorption tanks are connected with the cleaning tank.

Furthermore, a liquid inlet of the adsorption device is connected with a resolving liquid tank through a resolving pump, and a pipeline between the resolving pump and the resolving liquid tank is also connected with a clear water tank.

Furthermore, a cross-flow baffle plate is arranged inside the electrocatalytic reactor.

As a further step, the conductive portion in the electrocatalytic reactor is made of a carbon composite material.

As a further step, a waste liquid pump is arranged on the pipeline between the analysis waste liquid tank and the electro-catalytic reactor, and a high-pressure pump is arranged on the pipeline between the electro-catalytic reactor and the integrated membrane stack.

Due to the adoption of the technical scheme, the utility model can obtain the following technical effects: the device can reduce the wastewater discharge of enterprises, save water resources and reduce production cost, can realize changing waste into valuables, changes the wastewater into resources, reduces solid waste floor area and management cost, improves the reliability and stability of chemical production devices, adopts the effective combination of adsorption and electrocatalysis technology, and has the advantages of simple process, low operation cost, low equipment cost, small floor area, high integration level, no scaling of a system and the like.

Drawings

FIG. 1 is a schematic diagram of a structure of an integrated electro-catalytic wastewater hardness-removing zero-discharge device;

FIG. 2 is a process flow diagram of an integrated electro-catalytic wastewater hardness removal zero-emission device;

the sequence numbers in the figures illustrate: 1. a raw water pump; 2. a pretreatment device; 3. an adsorption device; 3-1, an adsorption tank; 3-2, cleaning the tank; 4. a reflux relay pump; 5. a clear water tank; 6. a resolving liquid tank; 7. a resolving pump; 8. a desorption waste liquid tank; 9. a waste liquid pump; 10. an electrocatalytic reactor; 11. a high pressure pump; 12. and (4) integrating the membrane stack.

Detailed Description

The embodiments of the present invention are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the following embodiments.

Example 1

As shown in fig. 1-2, the present embodiment provides an integrated electro-catalytic wastewater hardness-removing zero-discharge device, which is mainly adapted to the treatment of high-hardness, high-COD, and high-salinity wastewater, including the high-hardness wastewater of a coal gasifier and the pre-treated wastewater of reclaimed water reuse; the raw water containing hardness is sent into a pretreatment device from a homogenizing tank by a raw water pump, treated by a pretreatment filter, then enters an adsorption device, treated by an adsorption tank 3-1, and then sent to a gasification system by a reflux relay pump, so as to realize recycling. After the adsorption of an adsorber of the adsorption device is saturated, the desorption agent in the desorption liquid tank is sent to the adsorption tank by a desorption pump for desorption, so that the working performance of the adsorption tank is recovered, the generated desorption waste liquid is directly discharged into the desorption waste liquid tank, and then the residual desorption agent in the adsorption tank is pressed into the desorption waste liquid tank by compressed air in the adsorption device; after the adsorption tank is analyzed, pure water in the clear water tank is sent to the adsorption tank through an analysis pump for replacement, and replacement waste liquid is also discharged into an analysis waste liquid tank; sending the effluent of the analysis waste liquid tank into a high-efficiency electro-catalytic reactor through a waste liquid pump, treating ions in the reactor through an electro-catalytic oxidation process, and discharging the ions in the form of sediments; the supernatant of the electro-catalytic reactor is sent into the integrated membrane stack through a high-pressure pump, after the treatment of the integrated membrane stack, the concentrated water flows back to the analysis liquid tank for circular analysis and use, and the pure water flows back to the clear water tank for circular replacement, thereby realizing the function of zero discharge of waste liquid. Compared with the existing electrochemical process, adsorption process and chemical process, the device has the characteristics of no addition of chemicals, no adjustment of pH value, wide water quality adaptation and the like, is easy to realize standardization and modularization, can effectively solve the problem of wastewater treatment which troubles the coal gasification industry for many years, and ensures the long-period stable operation of the coal gasifier.

The pretreatment device removes solids, suspended matters, colloids and the like, mainly comprises a plurality of multifunctional high-efficiency filters, a matched pipeline instrument valve and the like to form a skid-mounted product, does not add medicament and increase ion components in the operation process, ensures stable quality of pretreated effluent and realizes device standardization. And the working performance of the device can be recovered by water scrubbing and air-water scrubbing through a backwashing pipeline without arranging backwashing special facilities. The pretreated washing wastewater is not discharged outside and flows back to the homogeneous tank through the wastewater collecting tank, and the washing water quantity is generally 50-150m³/h。

The adsorption device adopts adsorption filler to treat raw water, the filler can operate at 15-120 ℃, and can tolerate high COD, high turbidity and high NH₃The device mainly comprises a plurality of adsorption tanks, a matched pipeline instrument valve and the like to form a skid-mounted product, has an independent process function, and the water outlet index of the adsorber is generally 0-100 mg/L. The desorption liquid can desorb the adsorption filler, so that the desorption capacity of the adsorption filler is recovered, the stable operation of the adsorption device is ensured, the concentration of the desorption liquid is generally 4-6%, the comprehensive effluent hardness of the desorption waste liquid is 1-1.5g/L, and the highest hardness is about 3 g/L. The adsorption tank can be cleaned in vitro and cleaned by air water through the cleaning tank, so that the recovery of the adsorption performance is realized, the purity of the filler is ensured, and the flushing wastewater is recycled. The used resolving agent is a compound resolving agent, is more efficient and environment-friendly compared with the traditional resolving agent, and can be recycled to reduce the maintenance cost of the device. The compound type resolving agent is not limited to monovalent or divalent salts, acids and the like, or is realized by combining several of the monovalent or divalent salts and the acids according to a certain proportion.

The conductive part in the electro-catalytic reactor is made of carbon composite materials, so that the traditional electrode is more economical, and meanwhile, the cross-flow baffle is arranged in the reactor, so that the liquid phase retention time can be effectively ensured, and the reaction effect is improved.

The integrated membrane stack is not limited to the combination form of an ultrafiltration membrane, a nanofiltration membrane and a reverse osmosis membrane, and the form of the membrane is not limited to roll type, plate type and the like.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the utility model to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the utility model and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the utility model and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the utility model be defined by the claims and their equivalents.

Claims

1. The utility model provides an integrated electro-catalysis waste water removes hard zero discharge apparatus, its characterized in that, includes preprocessing device, adsorption equipment, electro-catalysis reactor and integrated membrane heap, preprocessing device's delivery port links to each other with adsorption equipment's water inlet, adsorption equipment's inlet links to each other with analytic cistern, and adsorption equipment's liquid outlet links to each other with analytic cistern, and the liquid outlet of this analytic cistern is connected to electro-catalysis reactor's inlet, electro-catalysis reactor's liquid outlet is connected to integrated membrane heap, the dense mouth of integrated membrane heap links back to analytic cistern, and the pure water mouth of integrated membrane heap is connected to the clear water groove.

2. The integrated electro-catalysis wastewater hardness-removing zero-emission device as claimed in claim 1, wherein the integrated membrane stack comprises an ultrafiltration membrane, a nanofiltration membrane and a reverse osmosis membrane.

3. The integrated electro-catalytic wastewater hardness-removing zero-emission device as claimed in claim 1, wherein the water inlet of the pre-treatment device is connected with the homogenization tank through a raw water pump, and the wastewater outlet of the pre-treatment device is connected back to the homogenization tank through a wastewater collection tank.

4. The integrated electro-catalytic wastewater hardness removal zero-emission device as claimed in claim 1, wherein the water outlet pipeline of the pretreatment device is connected back to the top of the pretreatment device through a backwashing pipeline.

5. The integrated electro-catalytic wastewater hardness-removal zero-emission device as claimed in claim 1, wherein the pretreatment device is one or more of a multi-media filter, a sand filter, a centrifuge, a fiber filter and a ceramic membrane connected in parallel.

6. The integrated electro-catalytic wastewater hardness-removal zero-emission device as claimed in claim 1, wherein the adsorption device comprises a plurality of adsorption tanks connected in parallel, and the adsorption tanks are connected with the cleaning tank.

7. The integrated electro-catalytic wastewater hardness-removing zero-emission device as claimed in claim 1, wherein the liquid inlet of the adsorption device is connected with a solution tank through a solution pump, and a pipeline between the solution pump and the solution tank is further connected with a clean water tank.

8. The integrated electro-catalytic wastewater hardness-removing zero-emission device as claimed in claim 1, wherein a cross-flow baffle is arranged inside the electro-catalytic reactor.

9. The integrated electro-catalytic wastewater hardness removal zero-emission device as claimed in claim 1, wherein the conductive part in the electro-catalytic reactor is made of carbon composite material.

10. The integrated electro-catalytic wastewater hardness-removing zero-emission device as claimed in claim 1, wherein a wastewater pump is disposed on the pipeline between the desorption wastewater tank and the electro-catalytic reactor, and a high-pressure pump is disposed on the pipeline between the electro-catalytic reactor and the integrated membrane stack.