CN116639835B - Car washing wastewater and surfactant recycling system and process - Google Patents
Car washing wastewater and surfactant recycling system and processInfo
- Publication number
- CN116639835B CN116639835B CN202310631574.8A CN202310631574A CN116639835B CN 116639835 B CN116639835 B CN 116639835B CN 202310631574 A CN202310631574 A CN 202310631574A CN 116639835 B CN116639835 B CN 116639835B
- Authority
- CN
- China
- Prior art keywords
- car washing
- wastewater
- medicament
- inert gas
- tank
- 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.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/44—Nature of the water, waste water, sewage or sludge to be treated from vehicle washing facilities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
Landscapes
- 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)
- Physical Water Treatments (AREA)
Abstract
The invention discloses a car washing wastewater and surfactant recycling system and process, wherein the system comprises a wastewater collection tank, a reaction tank, a sedimentation separation tank, a quartz sand filter, a precision filter, an inert gas flotation tower, an ultraviolet disinfection pipe and a clean water tank which are sequentially connected through pipelines from left to right, the reaction tank is respectively connected with a polyaluminium chloride medicament barrel, a polyacrylamide medicament barrel and a sodium hydroxide medicament barrel through pipelines, and the middle upper part of the inert gas flotation tower is connected with a foam collection box through a pipeline. The invention can realize the recycling of the car washing wastewater, and can realize the recycling of the surfactant for car washing and reduce the emission of pollutants.
Description
Technical Field
The invention relates to the technical field of wastewater and sewage treatment, in particular to a car washing wastewater and surfactant recycling system and process.
Background
In order to achieve the effect of high-foam cleaning, a plurality of surface active substances are used for washing the car, and the surface active substances have good foaming performance. The use of a large amount of the surfactant brings better experience to the car washing on one hand, and brings great surfactant waste on the other hand, and simultaneously increases the environmental burden.
In the prior art, patent CN206051750U, washing waste water recycling equipment, disclose including ozone catalytic box, deoxidizing box, active carbon filter, ultraviolet sterilizer and clean water tank, wherein the ozone catalytic box is connected with water inlet pipe, still there is ozone generator on it, this patent has adopted ozone catalytic oxidation leading to destroy the surfactant property, let it lose activity after recycling waste water, caused the waste of surfactant, adopt ozone catalytic oxidation to increase carbon emission and easy to cause secondary pollution at the same time;
The patent CN212833143U, a car washing wastewater purifying device, which comprises a wastewater collecting tank, a filtering tank, a diatom membrane filtering device, an activated carbon filter and a water purifying tank, wherein car washing wastewater generated by car washing sequentially passes through the wastewater collecting tank, the filtering tank, the diatom membrane filtering device, the activated carbon filter and the water purifying tank, and the surfactant is adsorbed and filtered by the diatom filtering device and the activated carbon filtering device, so that the recycling of the surfactant is not realized;
The patent CN205419950U, the car washing wastewater recycling system, which comprises a lane guiding device, a collecting and standing system, a primary water purifying and filtering system, a secondary water purifying and filtering system, a final purified water production system and a backwater circulating system, is used for purifying and recycling the wastewater through sedimentation and three-stage filtering, but only treats the car washing wastewater from the angles of sedimentation and filtering, and does not relate to the recycling of surfactants.
Therefore, the provision of a car washing wastewater and surfactant recycling system and process is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the invention provides a system and a process for recycling car washing wastewater and surfactant, which can recycle the car washing wastewater and the surfactant for car washing at the same time, and reduce pollutant emission.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the car washing wastewater and surfactant recycling system comprises a wastewater collecting tank, a reaction tank, a sedimentation separation tank, a quartz sand filter, a precision filter, an inert gas flotation tower, an ultraviolet disinfection pipe and a clean water tank which are sequentially connected through pipelines from left to right, wherein the reaction tank is respectively connected with a polyaluminium chloride medicament barrel, a polyacrylamide medicament barrel and a sodium hydroxide medicament barrel through pipelines, and the middle upper part of the inert gas flotation tower is connected with the foam collecting tank through the pipelines.
By adopting the technical scheme, the invention has the beneficial effects that:
the recycling of the car washing wastewater is realized, and meanwhile, the recycling of the surfactant for car washing can be realized, so that the pollutant emission is reduced.
Further, the reaction tank and the polyaluminium chloride medicament barrel connecting pipeline, the reaction tank and the polyacrylamide medicament barrel connecting pipeline, and the reaction tank and the sodium hydroxide medicament barrel connecting pipeline are all provided with a dosing pump.
Further, a sludge discharge pipe is arranged at the bottom of the sedimentation separation tank.
Further, an inert gas connecting pipe is arranged at the bottom of the inert gas flotation tower.
A process for recycling car washing wastewater and surfactant comprises the following steps:
1) Collecting car washing wastewater, injecting the collected car washing wastewater into a reaction tank, adding 10% concentration polyaluminium chloride medicament into a polyaluminium chloride medicament barrel, adding 0.1% concentration dissolved polyacrylamide medicament into a polyacrylamide medicament barrel, and adding 10% concentration sodium hydroxide medicament into a sodium hydroxide medicament barrel;
2) Sequentially filling the volume ratio of the medicament in the polyaluminium chloride medicament barrel to the wastewater into the reaction tank according to the volume ratio of 1:800-1000, filling the volume ratio of the medicament in the polyacrylamide medicament barrel to the wastewater into the reaction tank according to the volume ratio of 1:2400-2800, and filling the volume ratio of the medicament in the sodium hydroxide medicament barrel to the wastewater into the reaction tank according to the volume ratio of 1:1550;
3) The car washing wastewater reacts with the mixed medicament in the reaction tank;
4) The effluent of the reaction tank overflows to a sedimentation separation tank, supernatant in the sedimentation separation tank sequentially enters a quartz sand filter and a precision filter through a water pump, and sediment at the bottom of the sedimentation separation tank is discharged;
5) The car washing wastewater enters from the top of the inert gas flotation tower and flows downwards from top to bottom, while the inert gas is introduced from the bottom of the inert gas flotation tower and flows from bottom to top;
6) The foam separated by floatation in the inert gas floatation tower is conveyed to a foam collecting box, the collected foam is connected with a foam gun for car washing for re-proportioning, and the car washing wastewater after floatation separation is conveyed to an ultraviolet disinfection pipe for disinfection, and is conveyed to a clean water tank for car washing after disinfection.
By adopting the technical scheme, the invention has the beneficial effects that:
The method comprises the steps of adding a polyaluminium chloride medicament and a polyacrylamide medicament into car washing wastewater, precipitating and separating colloid formed by an inactivated surfactant through a precipitation and separation tank, adding a sodium hydroxide medicament, removing hardness in the water, increasing the decontamination capability of the wastewater, contacting inert gas with the wastewater, recycling part of the surfactant, recycling, adjusting a disinfection process to the rear end, avoiding the oxidation and inactivation of the surfactant and losing recycling value, thereby effectively improving the use efficiency of the car washing water, improving the use efficiency of the surfactant and reducing the emission of pollutants.
Further, in the step 4), the retention time of the car washing wastewater in the precipitation separation tank is 15-20 minutes.
Further, in the step 5), the volume ratio of the inert gas to the car washing wastewater is 1:7-10.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a system for recycling car washing wastewater and surfactant.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the embodiment of the invention discloses a car washing wastewater and surfactant recycling system, which comprises a wastewater collection tank, a reaction tank 1, a sedimentation separation tank 2, a quartz sand filter 3, a precision filter 4, an inert gas flotation tower 5, an ultraviolet disinfection tube 6 and a clear water tank 7 which are sequentially connected through pipelines from left to right, wherein the reaction tank 1 is respectively connected with a polyaluminium chloride medicament barrel 8, a polyacrylamide medicament barrel 9 and a sodium hydroxide medicament barrel 10 through pipelines, and the middle upper part of the inert gas flotation tower 5 is connected with a foam collection box 11 through a pipeline. The invention can realize the recycling of the car washing wastewater, and can realize the recycling of the surfactant for car washing and reduce the emission of pollutants.
Specifically, the chemical feeding pump is arranged on the connecting pipeline of the reaction tank 1 and the polyaluminium chloride medicament barrel 8, the connecting pipeline of the reaction tank 1 and the polyacrylamide medicament barrel 9 and the connecting pipeline of the reaction tank 1 and the sodium hydroxide medicament barrel 10.
Specifically, the bottom of the sedimentation separation tank 2 is provided with a sludge discharge pipe 12.
Specifically, an inert gas connecting pipe 13 is arranged at the bottom of the inert gas flotation tower 5.
The embodiment of the invention also discloses a process performed according to the car washing wastewater and surfactant recycling system, which comprises the following steps:
1) Collecting car washing wastewater, injecting the collected car washing wastewater into a reaction tank 1, adding 10% concentration polyaluminium chloride medicament into a polyaluminium chloride medicament barrel 8, adding 0.1% concentration dissolved polyacrylamide medicament into a polyacrylamide medicament barrel 9, and adding 10% concentration sodium hydroxide medicament into a sodium hydroxide medicament barrel 10;
2) Sequentially filling the volume ratio of the medicament in the polyaluminium chloride medicament barrel 8 to the wastewater into a reaction tank according to the volume ratio of 1:800-1000, filling the volume ratio of the medicament in the polyacrylamide medicament barrel 9 to the wastewater into the reaction tank according to the volume ratio of 1:2400-2800, and filling the volume ratio of the medicament in the sodium hydroxide medicament barrel 10 to the wastewater into the reaction tank according to the volume ratio of 1:1550;
3) The car washing wastewater reacts with a mixed reagent (a reagent formed by mixing a polyaluminium chloride reagent, a neutral polyacrylamide reagent and a sodium hydroxide reagent) in the reaction tank 1, so that suspended matters such as colloid in the wastewater are effectively coagulated, the hardness of the car washing wastewater can be reduced, and the decontamination capability can be improved;
4) The effluent of the reaction tank 1 overflows to the sedimentation separation tank 2, high-efficiency separation is realized through sedimentation, supernatant fluid in the sedimentation separation tank 2 sequentially enters the quartz sand filter 3 and the precise filter 4 through a water pump, fine particles such as colloid are further removed, the quality of circulating water is further improved, and sediment at the bottom of the sedimentation separation tank 2 is discharged, namely, the sediment at the bottom is discharged through the mud discharge pipe 12;
5) The car washing wastewater enters from the top of the inert gas flotation tower 5 and flows downwards from top to bottom, while the inert gas is introduced from the bottom of the inert gas flotation tower 5 and flows from bottom to top, so that on one hand, the residual surfactant can be separated and recycled in a foam form, and on the other hand, the contact of the inert gas and the car washing wastewater can not provide energy for the propagation of microorganisms in the circulating liquid, in the embodiment, the volume ratio of the inert gas to the car washing wastewater is 1:7-10;
6) The foam separated by floatation in the inert gas floatation tower 5 is conveyed to the foam collecting box 11, the collected foam is connected with the foam gun for car washing for re-proportioning use, and the car washing wastewater after floatation separation is conveyed to the ultraviolet disinfection tube 6 for disinfection, so that the water quality of the car washing wastewater can be further disinfected and disinfected, the water quality of the car washing wastewater is improved, and the car washing wastewater is conveyed to the clean water tank 7 for car washing after disinfection.
According to the invention, the polyaluminium chloride medicament and the polyacrylamide medicament are added into the car washing wastewater, and colloid formed by the inactivated surfactant is precipitated and separated through the precipitation separation tank 2, meanwhile, the sodium hydroxide medicament is added to remove the hardness in the water, and meanwhile, the decontamination capability of the wastewater is increased, part of the surfactant is recycled through the contact of inert gas and the wastewater, the oxidation inactivation of the surfactant and the loss of recycling value are avoided through adjusting the disinfection process to the rear end, so that the use efficiency of the car washing water can be effectively improved, the use efficiency of the surfactant is improved, and the emission of pollutants is reduced.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The car washing wastewater and surfactant recycling process is performed by using a car washing wastewater and surfactant recycling system, and is characterized by comprising the following steps of:
1) Collecting car washing wastewater, injecting the collected car washing wastewater into a reaction tank, adding 10% concentration polyaluminium chloride medicament into a polyaluminium chloride medicament barrel, adding 0.1% concentration dissolved polyacrylamide medicament into a polyacrylamide medicament barrel, and adding 10% concentration sodium hydroxide medicament into a sodium hydroxide medicament barrel;
2) Sequentially filling the volume ratio of the medicament in the polyaluminium chloride medicament barrel to the wastewater into the reaction tank according to the volume ratio of 1:800-1000, filling the volume ratio of the medicament in the polyacrylamide medicament barrel to the wastewater into the reaction tank according to the volume ratio of 1:2400-2800, and filling the volume ratio of the medicament in the sodium hydroxide medicament barrel to the wastewater into the reaction tank according to the volume ratio of 1:1550;
3) The car washing wastewater reacts with the mixed reagent in the reaction tank respectively;
4) The effluent of the reaction tank overflows to a sedimentation separation tank, supernatant in the sedimentation separation tank sequentially enters a quartz sand filter and a precision filter through a water pump, and sediment at the bottom of the sedimentation separation tank is discharged;
5) The car washing wastewater enters from the top of the inert gas flotation tower and flows downwards from top to bottom, while the inert gas is introduced from the bottom of the inert gas flotation tower and flows from bottom to top, so that on one hand, the residual surfactant can be separated and recycled in a foam form, and on the other hand, the contact of the inert gas and the car washing wastewater can not provide energy for the propagation of microorganisms in the circulating liquid;
6) The foam separated by floatation in the inert gas floatation tower is conveyed to a foam collecting box, the collected foam is connected with a foam gun for car washing for re-proportioning, and the car washing wastewater after floatation separation is conveyed to an ultraviolet disinfection pipe for disinfection, and is conveyed to a clean water tank for car washing after disinfection.
2. The process according to claim 1, characterized in that in step 4) the car wash wastewater stays in the sedimentation separation tank for 15-20 minutes.
3. The process according to claim 1, wherein in step 5) the volume ratio of inert gas to car wash waste water is 1:7-10.
4. The process according to claim 1, wherein the car washing wastewater and surfactant recycling system comprises a wastewater collection tank, a reaction tank, a sedimentation separation tank, a quartz sand filter, a precision filter, an inert gas flotation tower, an ultraviolet disinfection pipe and a clean water tank which are sequentially connected through pipelines from left to right, wherein the reaction tank is respectively connected with a polyaluminium chloride medicament barrel, a polyacrylamide medicament barrel and a sodium hydroxide medicament barrel through pipelines, and the middle upper part of the inert gas flotation tower is connected with the foam collection tank through a pipeline.
5. The process of claim 4, wherein the connecting pipes of the reaction tank and the polyaluminium chloride medicament barrel, the connecting pipes of the reaction tank and the polyacrylamide medicament barrel and the connecting pipes of the reaction tank and the sodium hydroxide medicament barrel are provided with medicament adding pumps.
6. The process according to claim 4, wherein a sludge discharge pipe is installed at the bottom of the sedimentation separation tank.
7. The process according to claim 4, wherein an inert gas connection pipe is installed at the bottom of the inert gas flotation column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310631574.8A CN116639835B (en) | 2023-05-31 | 2023-05-31 | Car washing wastewater and surfactant recycling system and process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310631574.8A CN116639835B (en) | 2023-05-31 | 2023-05-31 | Car washing wastewater and surfactant recycling system and process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116639835A CN116639835A (en) | 2023-08-25 |
| CN116639835B true CN116639835B (en) | 2025-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202310631574.8A Active CN116639835B (en) | 2023-05-31 | 2023-05-31 | Car washing wastewater and surfactant recycling system and process |
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| Country | Link |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201932977U (en) * | 2011-01-24 | 2011-08-17 | 何文涛 | Device for purifying vehicle-cleaning wastewater |
| CN218025556U (en) * | 2022-09-19 | 2022-12-13 | 内蒙古驿港科技企业管理有限公司 | Integrated car washing wastewater treatment device |
| CN218931751U (en) * | 2022-11-11 | 2023-04-28 | 内蒙古驿港科技企业管理有限公司 | Car washing wastewater filtering device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000127913A (en) * | 1998-08-17 | 2000-05-09 | Kuraray Co Ltd | Car wash system and method of using wastewater in the car wash system |
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2023
- 2023-05-31 CN CN202310631574.8A patent/CN116639835B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201932977U (en) * | 2011-01-24 | 2011-08-17 | 何文涛 | Device for purifying vehicle-cleaning wastewater |
| CN218025556U (en) * | 2022-09-19 | 2022-12-13 | 内蒙古驿港科技企业管理有限公司 | Integrated car washing wastewater treatment device |
| CN218931751U (en) * | 2022-11-11 | 2023-04-28 | 内蒙古驿港科技企业管理有限公司 | Car washing wastewater filtering device |
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| CN116639835A (en) | 2023-08-25 |
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