CN210796041U

CN210796041U - Wastewater colloid extraction and separation system in printing and dyeing hydrosol

Info

Publication number: CN210796041U
Application number: CN201921759368.0U
Authority: CN
Inventors: 赖剑文; 王明建
Original assignee: Fujian Buxing Environmental Protection Technology Development Co ltd
Current assignee: Fujian Buxing Environmental Protection Technology Development Co ltd
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-06-19
Anticipated expiration: 2029-10-18

Abstract

The utility model discloses a waste water colloid draws and piece-rate system in printing and dyeing hydrosol belongs to industrial wastewater treatment technical field. Its technical essential includes the sewage equalizing basin, the delivery port of sewage equalizing basin is connected with the pH equalizing basin, the pH equalizing basin has the flocculation and precipitation pond through the pipe connection, the flocculation and precipitation pond has the hydrolysis-acidification pond through the pipe connection, the hydrolysis-acidification pond has the contact oxidation pond through the pipe connection, the contact oxidation pond has the secondary sedimentation pond through the pipe connection, the supernatant of secondary sedimentation pond flows into in the clear water pond through the delivery port, the clear water pond has milipore filter subassembly through the pipe connection. The utility model has the advantages of reducing the organic load of the subsequent aerobic process, improving the biochemical treatment of sewage and improving the organic matter degrading capacity of the whole system.

Description

Wastewater colloid extraction and separation system in printing and dyeing hydrosol

Technical Field

The utility model belongs to the technical field of industrial wastewater treatment, more specifically say, it relates to a waste water colloid draws and piece-rate system in printing and dyeing hydrosol.

Background

The printing and dyeing wastewater refers to wastewater discharged from cotton, wool, hemp, silk, chemical fiber or blended products in the processes of pretreatment, dyeing, printing, finishing and the like. The printing and dyeing wastewater has the characteristics of large water quantity, high organic pollutant content, deep chromaticity, large alkalinity, large water quality change and the like, and belongs to industrial wastewater which is difficult to treat. The treatment methods of the printing and dyeing wastewater mainly comprise four methods, namely a physical treatment method, a chemical treatment method, a biological treatment method and an alkali decrement treatment method.

The aerobic treatment process adopted in the prior art is a common treatment approach for printing and dyeing wastewater.

However, if the aerobic treatment process is adopted singly and lower organic charge is needed, the occupied area is large, the removal effect is not ideal enough, and the operation cost is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a waste water colloid draws and piece-rate system in printing and dyeing hydrosol, it has the organic load that reduces follow-up good oxygen technology, but has improved the biochemical treatment of sewage simultaneously, improves the advantage of entire system degradation organic matter ability.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a waste water colloid draws and piece-rate system in printing and dyeing hydrosol, includes the sewage equalizing basin, the delivery port of sewage equalizing basin is connected with the pH equalizing basin, the pH equalizing basin has the flocculation and precipitation pond through the pipe connection, the flocculation and precipitation pond has the hydrolysis-acidification pond through the pipe connection, the hydrolysis-acidification pond has the contact oxidation pond through the pipe connection, the contact oxidation pond has the secondary sedimentation tank through the pipe connection, the supernatant of secondary sedimentation tank passes through in the delivery port flows into the clear water pond, the clear water pond has ultrafiltration membrane module through the pipe connection.

By adopting the technical scheme, after the wastewater in the workshop is discharged into the sewage adjusting tank, the wastewater enters the pH adjusting tank through a pipeline, lime is added into the pH adjusting tank to adjust the pH value of the wastewater to about 8-8.5, and the effluent flows into the flocculation sedimentation tank; adding borax, sodium sulfate, PAC and PAM into a flocculation sedimentation tank to carry out a gelling salting-out reaction, and then feeding the wastewater into a hydrolysis acidification tank through a pipeline; in the hydrolysis acidification tank, macromolecular organic matters which are difficult to degrade in the wastewater are converted into micromolecular organic matters which are easy to biodegrade through microorganisms, and after the substances which are difficult to biodegrade are degraded into substances which are easy to biodegrade, the wastewater flows into the contact oxidation tank; the aerobic microorganisms in the contact oxidation pond can decompose organic matters in the wastewater into CO2 and H2O under the aeration and oxygenation states; effluent automatically flows into a secondary sedimentation tank for mud-water separation, supernatant in the secondary sedimentation tank flows into a clear water tank through a water outlet, water in the clear water tank is discharged after being filtered by an ultrafiltration membrane component, the organic load of a subsequent aerobic process is reduced, the biochemical treatment of sewage is improved, and the capability of the whole system for degrading organic matters is improved.

Further, a plunger pump is arranged at the bottom of the flocculation sedimentation tank, the plunger pump is communicated with a plate-and-frame filter press through a pipeline, and the plate-and-frame filter press is communicated with the hydrolysis acidification tank through a pipeline.

Through adopting above-mentioned technical scheme, take place the flocculation reaction back in the flocculation and precipitation pond, the plate and frame filter press dewaters the floccule that generates, can effectively reduce pollutants such as PVA, CODcr, colourity in the waste water.

Further, a sludge pump is arranged at the bottom of the secondary sedimentation tank and communicated with a sludge dewatering machine through a pipeline.

Through adopting above-mentioned technical scheme, clear up mud in the secondary sedimentation tank, avoid the mud siltation in the secondary sedimentation tank bottom, reduce the cycle to the desilting of secondary sedimentation tank bottom to improve the work efficiency of system.

Further, the filtrate generated by the sludge dewatering machine is returned to the sewage adjusting tank through a pipeline.

Through adopting above-mentioned technical scheme, insert the sewage equalizing basin with filtrating for sewage carries out the scrubbing once more, thereby has improved the scrubbing effect to waste water.

Furthermore, the ultrafiltration membrane component comprises three groups of membrane components which are connected with each other, and the membrane components are hollow fiber membranes made of PVDF membrane materials.

By adopting the technical scheme, the membrane component is a hollow fiber membrane made of PVDF membrane material, and the water yield of the ultrafiltration membrane component can be improved.

Furthermore, the top of the sewage adjusting tank is connected with an emergency accident tank through a pipeline.

Through adopting above-mentioned technical scheme, the setting in emergent accident pond, when workshop or sewage treatment station proruption have a power failure or equipment break down, original sewage equalizing basin is full of the back suddenly, and the sewage overflow that comes out suddenly goes into emergent accident pond, avoids sewage to reveal and causes the pollution accident for all ring edge borders.

Further, a roots blower is arranged in the contact oxidation tank, and is respectively communicated with the emergency accident tank, the sewage adjusting tank, the pH adjusting tank, the hydrolysis acidification tank and the contact oxidation tank through liquid in the pipeline.

By adopting the technical scheme, the Roots blower can supply oxygen content to the wastewater in the emergency accident pool, the sewage adjusting pool, the pH adjusting pool, the hydrolysis acidification pool and the contact oxidation pool, so that the activity of microorganisms in the wastewater is improved; meanwhile, organic matters, microorganisms and oxygen are brought back into full contact, so that the sewage treatment efficiency of the system is improved.

Furthermore, a grid well is arranged at a water inlet of the sewage adjusting tank.

Through adopting above-mentioned technical scheme, the setting of grid well can be got rid of interception such as great suspended solid, floater in the waste water to avoid causing suspended solid, floater to cause the pipeline to block up.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the macromolecule and organic matters which are difficult to degrade are subjected to ring removal and chain breakage through hydrolytic acidification, so that the biodegradability of the sewage is improved, the organic load of a subsequent aerobic process is reduced, the biochemical treatment of the sewage is improved, and the organic matter degrading capacity of the whole system is improved;

(2) through the arrangement of the plate-and-frame filter press, after flocculation reaction occurs in the flocculation sedimentation tank, the plate-and-frame filter press dehydrates the generated floccules, so that pollutants such as PVA, CODcr, chromaticity and the like in the wastewater can be effectively reduced;

(3) through the setting in emergent accident pond, when workshop or sewage treatment station proruption have a power failure or equipment break down, original sewage equalizing basin is full of the back suddenly, and emergent accident pond is gone into to the sewage overflow that comes out suddenly, avoids sewage to reveal and causes the pollution accident for the surrounding environment.

Drawings

FIG. 1 is a schematic diagram of a wastewater colloid extraction and separation system in a printing and dyeing hydrosol.

Reference numerals: 1. a sewage adjusting tank; 2. a pH adjusting tank; 3. a flocculation sedimentation tank; 4. a hydrolysis acidification pool; 5. a contact oxidation pond; 6. a secondary sedimentation tank; 7. a clean water tank; 8. an ultrafiltration membrane module; 9. a plate-and-frame filter press; 10. a sludge dewatering machine; 11. an emergency accident pool; 12. a Roots blower; 13. a grid well.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

The utility model provides a waste water colloid draws and piece-rate system in printing and dyeing hydrosol, refer to FIG 1, including the sewage equalizing basin, install the elevator pump in the sewage equalizing basin, waste water in the sewage equalizing basin is connected with the pH equalizing basin through the elevator pump, the pH equalizing basin has the flocculation and precipitation pond through the pipe connection, the flocculation and precipitation pond has hydrolysis and acidification pond through the pipe connection, there is the contact oxidation pond hydrolysis and acidification pond through the pipe connection in the hydrolysis and acidification pond, the contact oxidation pond has the secondary sedimentation pond through the pipe connection, the supernatant of secondary sedimentation pond passes through in the delivery port inflow clear water pond, the clear water pond has the milipore filter subassembly.

Furthermore, a plunger pump is installed at the bottom of the flocculation sedimentation tank, the plunger pump is connected with a plate-and-frame filter press through a pipeline, and the plate-and-frame filter press is communicated with the hydrolysis acidification tank through a pipeline. After flocculation reaction occurs in the flocculation sedimentation tank, the plate-and-frame filter press dehydrates the generated floccules, and can effectively reduce pollutants such as PVA, CODcr, chromaticity and the like in the wastewater.

Referring to fig. 1, a sludge pump is installed at the bottom of the secondary sedimentation tank, and the sludge pump is communicated with a sludge dewatering machine through a pipeline. Carry out the desilting to secondary sedimentation tank bottom through the sludge pump, can reduce the cycle to the desilting of secondary sedimentation tank bottom to the work efficiency of system has been improved.

Further, filtrate generated by the sludge dewatering machine is returned to the sewage adjusting tank through a pipeline. And the filtrate is connected into a sewage adjusting tank, so that sewage is subjected to decontamination again, the decontamination effect of the system on the wastewater is improved, and unqualified discharged water is avoided.

It is worth mentioning that the ultrafiltration membrane component comprises three groups of mutually connected membrane components, and the membrane components are hollow fiber membranes made of PVDF membrane materials, so that the water yield of the ultrafiltration membrane component can be improved.

Referring to fig. 1, there is emergent accident pool at the top of the sewage adjusting pool through the pipe connection, when the sudden power failure or equipment failure occurs in the workshop or the sewage treatment station, the sudden overflow of the sewage adjusting pool will overflow into the emergent accident pool, avoiding the pollution accident caused by the sewage leakage to the surrounding environment.

Furthermore, in order to improve the oxygen content of the wastewater in the emergency accident pool, the sewage adjusting pool, the pH adjusting pool, the hydrolysis acidification pool and the contact oxidation pool, a Roots blower communicated with the wastewater in the emergency accident pool, the sewage adjusting pool, the pH adjusting pool, the hydrolysis acidification pool and the contact oxidation pool is arranged in the contact oxidation pool, so that the activity of microorganisms in the wastewater is improved; meanwhile, organic matters, microorganisms and oxygen are brought back into full contact, so that the sewage treatment efficiency of the system is improved.

It is worth mentioning that a grating well is arranged at the water inlet of the sewage adjusting tank. Can get rid of great suspended solid, floater etc. interception in the waste water through the grid well to avoid causing suspended solid, floater etc. to cause the pipeline jam.

The utility model discloses a working process and beneficial effect as follows: the method comprises the following steps that waste water passing through a grid well enters a pH adjusting tank under the action of a lift pump, the pH value of the waste water is adjusted to be about 8-8.5 in the pH adjusting tank by adding lime, effluent automatically flows into a flocculation reaction tank, borax, sodium sulfate, PAC and PAM are added into the flocculation sedimentation tank to carry out a gelling and salting-out reaction, and then the waste water enters a hydrolysis and acidification tank through the lift pump; in the hydrolysis acidification tank, macromolecular organic matters which are difficult to degrade in the wastewater are converted into micromolecular organic matters which are easy to biodegrade through microorganisms, and after the substances which are difficult to biodegrade are degraded into substances which are easy to biodegrade, the wastewater flows into the contact oxidation tank; the aerobic microorganisms in the contact oxidation pond can decompose organic matters in the wastewater into CO and HO under the aeration and oxygenation states; effluent flows into a secondary sedimentation tank for mud-water separation, supernatant in the secondary sedimentation tank flows into a clear water tank through a water outlet, and water in the clear water tank enters an ultrafiltration membrane component through a lift pump to be filtered and then is discharged.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. 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

1. The utility model provides a waste water colloid draws and piece-rate system in printing and dyeing hydrosol, a serial communication port, including the sewage equalizing basin, the delivery port of sewage equalizing basin is connected with the pH equalizing basin, the pH equalizing basin has the flocculation and precipitation pond through the pipe connection, the flocculation and precipitation pond has the hydrolysis and acidification pond through the pipe connection, the hydrolysis and acidification pond has the contact oxidation pond through the pipe connection, the contact oxidation pond has the secondary sedimentation pond through the pipe connection, the supernatant of secondary sedimentation pond flows into in the clear water pond through the delivery port, the clear water pond has ultrafiltration membrane module through the pipe connection.

2. The system for extracting and separating the wastewater colloid from the printing and dyeing hydrosol according to claim 1, wherein a plunger pump is arranged at the bottom of the flocculation sedimentation tank, the plunger pump is communicated with a plate and frame filter press through a pipeline, and the plate and frame filter press is communicated with the hydrolysis acidification tank through a pipeline.

3. The system for extracting and separating the colloid of wastewater in printing and dyeing hydrosol as claimed in claim 1, wherein a sludge pump is arranged at the bottom of the secondary sedimentation tank, and the sludge pump is communicated with a sludge dewatering machine through a pipeline.

4. The system for extracting and separating the colloid of wastewater in printing and dyeing hydrosol according to claim 3, wherein the filtrate generated by the sludge dewatering machine is returned to the sewage adjusting tank through a pipeline.

5. The system for extracting and separating the colloid of wastewater in printing and dyeing hydrosol according to claim 1, wherein the ultrafiltration membrane modules comprise three groups of interconnected membrane modules, and the membrane modules are hollow fiber membranes made of PVDF membrane materials.

6. The system for extracting and separating the colloid of wastewater from printing and dyeing hydrosol according to claim 1, wherein the top of the wastewater conditioning tank is connected with an emergency accident tank through a pipeline.

7. The system for extracting and separating the colloid of wastewater in printing and dyeing hydrosol according to claim 6, wherein a Roots blower is arranged in the contact oxidation tank, and the Roots blower is respectively in liquid communication with the emergency accident tank, the sewage adjusting tank, the pH adjusting tank, the hydrolysis acidification tank and the contact oxidation tank through pipelines.

8. The system for extracting and separating colloid of wastewater from printing and dyeing hydrosol according to claim 1, wherein the inlet of the wastewater conditioning tank is provided with a grid well.