CN201501817U - Small car wash car wash wastewater treatment equipment - Google Patents

Abstract

The utility model belongs to the field of waste water treatment equipment, in particular to a small car wash waste water treatment equipment. The main structure of the equipment is an aeration oxidative coagulation sedimentation reactor (32), which consists of a reaction tank (33), a stirring device and The aeration system is composed of a stirring device located at the top of the reaction tank (33), and the membrane type aeration head (3) of the aeration system is located at the bottom of the reaction tank (33), and the stirring device is controlled by a stirring motor (10) , stirring blades (11), the bottom of the stirring motor (10) is provided with a mud scraper (12), the bottom is provided with a sludge cover (19), and the side wall of the reaction tank (33) is provided with a water level detector (9) One side of the semicircular foam scum collection tank (13) and the reaction tank (33) is also provided with an inlet and outlet system and a self-cleaning filter system. The main equipment of the product has small volume, easy operation, easy maintenance, and convenient movement. Economical and applicable features.

Description

Small car wash car wash wastewater treatment equipment

Technical field: The utility model belongs to the field of wastewater treatment equipment, in particular to a small car wash wastewater treatment equipment for car washing.

Background technology: In the existing car wash wastewater treatment and reuse process, although the effluent quality of the membrane bioreactor wastewater treatment process is stable and the operation and management are simple, the process needs to adopt a continuous operation mode to maintain the activity of the activated sludge. At the same time, the reactor is required to The temperature of the inlet water should not be lower than 8°C, otherwise the activity of the activated sludge will be affected to a certain extent. At this time, the process needs to avoid disinfectants that can inhibit the metabolism of microorganisms, otherwise the normal physiological functions of microorganisms will be destroyed, resulting in water discharge Therefore, the membrane biological reaction wastewater treatment process is not suitable for the wastewater treatment of small car washes in the intermittent operation mode and the use in low temperature areas and northern winters, and its application range is limited by temperature and region.

In addition, the current physical and chemical treatment of car wash wastewater generally includes sand settling, oil removal, coagulation sedimentation, air flotation, sand filtration, activated carbon adsorption, membrane module treatment, disinfection and other processes, with a high degree of automation and stable water output. Car wash wastewater reuse standard, but the investment in equipment is high and the technical requirements are high, so it cannot be used by small car washes with scattered distribution and low economic benefits; while the car wash wastewater treatment equipment that only uses simple coagulation treatment on the market is not effective for organic matter, The treatment effect of oil and surfactant is not ideal, and it is difficult to achieve the purpose of water reuse.

Summary of the invention: The purpose of this utility model is to overcome the current membrane bioreactor's lack of technology and equipment for treating small-scale car wash wastewater and the problems of complex technology and high cost of physical and chemical membrane modules for treating car wash wastewater, and to provide people with a It is not limited by temperature and region, economical and practical, and has an ideal treatment effect on organic matter, oil and surfactants. It is a small-scale car wash wastewater treatment equipment for car washes.

The purpose of this utility model is achieved through the following technical solutions:

The utility model's small-scale car wash waste water treatment equipment is mainly an aeration oxidative coagulation sedimentation reactor 32, which is composed of a reaction tank 33, a stirring device and an aeration system, and the stirring device is located in the upper part of the reaction tank 33. The diaphragm type aeration head 3 of the aeration system is located in the lower part of the reaction tank 33, and the reaction tank 33 is also provided with a dosing hole 34.

In the above solution, the stirring equipment is composed of a stirring motor 10 and a stirring blade 11 , a mud scraper 12 is arranged at the lower part of the stirring motor 10 , and a sludge cover 19 is arranged at the lower part.

In the above scheme, the side wall of the reaction tank 33 is provided with a water level detector 9 and a semicircular foam scum collection tank 13 , and the foam scum collection tank 13 communicates with the foam water overflow pipe 14 .

In the above solution, the aeration system is composed of a diaphragm micro-aeration head 3 , an aerator 4 , and an air intake valve 5 , and the aerator 4 and the air intake valve 5 are located outside the bottom of the reaction tank 33 .

In the above scheme, the dosing hole 34 is connected to the dosing system, and the dosing system consists of a dosing pump 6, a dosing valve a7, a dosing valve b15, a dosing valve c17, a dosing box a8, a dosing box b16, The dosing box c18 is formed, and the dosing system is connected with the dosing hole 34 on the reaction tank 33 through the dosing pump 6 .

In the above scheme, one side of the reaction tank 33 is also provided with a water inlet and outlet system. The water inlet and outlet system is composed of a waste water inlet valve 2, a water pump 1, and a residual water discharge valve 20, and is connected to the reaction tank by the water pump 1. 33 connected.

In the above scheme, one side of the reaction tank 33 is also provided with a self-cleaning filter system. The self-cleaning filter system is composed of a self-cleaning filter 21, a filter water inlet valve 22, a sewage outlet 30, and a water outlet pipe 23. The self-cleaning filter system The system is connected to the reaction tank 33 through the water inlet valve 22 of the filter, the water pump 1 of the water inlet and outlet system. The outlet pipe 23 of the self-cleaning filter system communicates with the disinfection aeration clarifier 24.

In the above solution, the reaction tank 33 is further provided with a backwash valve 29 on one side and a mud discharge valve 28 at the bottom.

In the above scheme, the disinfection aeration clarifier 24 is respectively provided with a porous aeration pipe 26, a sewage valve 27, and a clarified liquid overflow outlet 31, and the porous aeration pipe 26 communicates with the intake valve 25 of the aeration clarifier.

In the above scheme, the aeration oxidative coagulation sedimentation reactor 32, the aeration system, the dosing system, the water inlet and outlet systems, the backwash system, and the self-cleaning filtration system are integrated to form the main body of the car wash wastewater treatment equipment, which are arranged on the same frame . The disinfection clarifier 24 is set off the machine.

In the above scheme, the water inlet of the water collection well of the peripheral facilities and structures is connected to the underground mesh ditch of the car wash site, and the outlet is provided with a grille and oil-absorbing felt, and is connected to the water pump 1 through the waste water inlet valve 2 .

The utility model of small-scale car wash wastewater treatment equipment is a scientific and practical technical solution explored by the inventor through long-term practice. After adopting the utility model, the small-scale car wash wastewater treatment technology can be combined with this equipment to use composite oxidants for aeration and oxidation , strengthen the oxidative degradation of organic matter, oils, and surfactants, enhance the coagulation and sedimentation effect of the multi-component composite inorganic flocculant-organic coagulant aid, and adopt an aerated oxidative coagulation sedimentation system composed of a multifunctional agitator and an aeration system Reactor, a reactor that integrates oxidation reaction, air flotation, coagulation and sedimentation, and a 5μ self-cleaning filter, supplemented by grid removal at the outlet of the water collection well, oil removal with linoleum, and aeration disinfection in the aeration and clarification tank The treatment makes the water quality of the treated water better than that of the past with only simple coagulation, filtration, and disinfection treatment processes. The main equipment is small in size, easy to operate, easy to maintain, easy to move, and economical and applicable.

Description of drawings:

Fig. 1 is a structural schematic diagram of the wastewater treatment equipment of the utility model.

In the figure: 1. Suction pump; 2. Waste water inlet valve; 3. Diaphragm micro-aeration head; 4. Aerator; 5. Air intake valve; 6. Pumping pump; 7. Dosing valve a; 8 1. Dosing box a; 9. Water level detector; 10. Stirring motor; 11. Stirring blade; 12. Scraper; 13. Foam scum collection tank; 14. Foam water overflow pipe; 15. Dosing valve b ; 16. Dosing box b; 17. Dosing valve c; 18. Dosing box c; 19. Sludge cover; 20. Remaining water discharge valve; 21. Self-cleaning filter; 22. Filter inlet valve; 23. Filter outlet pipe; 24. Disinfection aeration clarifier; 25. Air intake valve; 26. Porous aeration pipe; 27. Sewage valve; 28. Mud discharge valve; 29. Tap water backwash valve; 30. Filter Sewage outlet; 31. Clarified liquid overflow outlet; 32. Aeration oxidation coagulation sedimentation reactor; 33. Reaction tank; 34. Dosing hole.

Detailed ways:

Further describe the utility model in detail below in conjunction with embodiment, but the utility model is not limited to described embodiment.

Example 1:

As shown in Figure 1: the utility model is applied to the equipment for the treatment of car washing wastewater in small car washes. It is located at the upper part of the reaction tank 33 , and the diaphragm aeration head 3 of the aeration system is located at the lower part of the reaction tank 33 , and the reaction tank 33 is also provided with a dosing hole 34 . In this example, the dosing hole 34 may not be provided, and the dosing may be performed manually through the opening at the top of the reaction tank 33 .

As shown in FIG. 1 : the mixing equipment described in this example is composed of a stirring motor 10 and a stirring blade 11 , a scraper 12 is provided at the bottom of the stirring motor 10 , and a sludge cover 19 is provided at the bottom.

As shown in FIG. 1 : the side wall of the reaction tank 33 in this example is provided with a water level detector 9 and a semicircular foam scum collection tank 13 , and the foam scum collection tank 13 communicates with the foam water overflow pipe 14 .

As shown in Figure 1: the aeration system described in this example consists of a diaphragm micro-aeration head 3, an aerator 4, and an air intake valve 5, and the aerator 4 and the air intake valve 5 are located outside the bottom of the reaction tank 33.

As shown in Figure 1: the dosing hole 34 described in this example is connected to the dosing system, and the dosing system consists of a dosing pump 6, a dosing valve a7, a dosing valve b15, a dosing box c17, a dosing box a8, a dosing system The medicine box b16 and the medicine adding box c18 are formed, and the medicine adding system is connected with the medicine adding hole 34 on the reaction tank 33 through the medicine pump 6 .

As shown in Figure 1: one side of the reaction tank 33 described in this example is also provided with a water inlet and outlet system. 1 links to each other with reaction tank 33.

As shown in Figure 1: one side of the reaction tank 33 described in this example is also provided with a self-cleaning filter system, the self-cleaning filter system is composed of a self-cleaning filter 21, a filter water inlet valve 22, a sewage outlet 30, and a water outlet pipe 23 , the self-cleaning filter system is connected to the reaction tank 33 through the filter water inlet valve 22, the water pump 1 of the water inlet and outlet system. The outlet pipe 23 of the self-cleaning filter system communicates with the disinfection aeration clarifier 24.

As shown in FIG. 1 , a backwash valve 29 is provided on one side of the reaction tank 33 in this example, and a mud discharge valve 28 is provided at the bottom.

As shown in Figure 1: the disinfection aeration clarification tank 24 described in this example is respectively provided with a porous aeration pipe 26, a sewage valve 27, a clarified liquid overflow outlet 31, a porous aeration pipe 26 and an aeration clarification tank inlet valve. 25 connected.

As shown in Figure 1: In this example, the aeration oxidative coagulation sedimentation reactor 32, aeration system, dosing system, water inlet and outlet system, backwash system, and self-cleaning filtration system are integrated to form the main body of the car wash wastewater treatment equipment, which is set in on the same rack. The specific structure of the aeration oxidation coagulation sedimentation reactor 32, aeration system, dosing system, water inlet and outlet system, backwash system, and self-cleaning filtration system described in this example can also be improved and designed arbitrarily, not limited to the above-mentioned implementation example. The disinfection clarifier 24 is set off the machine.

As shown in Figure 1: the water inlet of the water collection well of the peripheral facilities and structures in this example is connected to the underground mesh ditch of the car wash, the outlet is provided with a grille and oil-absorbing felt, and is connected to the pump 1 through the waste water inlet valve 2.

The equipment of the present utility model is further described below through processing method and working process.

In this example, the following methods are used to treat wastewater:

(1) Use 4 ml/L of 2% composite oxidant, and aerate and oxidize for 30 minutes under neutral to slightly alkaline conditions; the composite oxidant described in this example is provided by Chengdu Guangjie Environmental Protection Biotechnology Co., Ltd.

(2) Use 25ml/L of composite inorganic flocculant to polymerize ferric aluminum silicate at a concentration of 9%, and control the pH to about 8.5 to stir and flocculate for 5 minutes;

(3) Use 0.1% polyacrylamide 20ml/L to control pH8.5 for coagulation and precipitation for 10 minutes;

(4) The treated water supernatant is pumped to a 5μ self-cleaning filter for filtration;

(5) Filter the water into the disinfection aeration tank, add chlorine dioxide alkaline aeration disinfection with an available chlorine of 20 mg/L, and reuse the clarified liquid for car washing.

The components described in the above examples are not limited to this example.

The specific wastewater treatment steps are as follows:

1) The car washing wastewater is collected through the underground grid of the car washing site through the ditch to the water collection well for primary sedimentation;

2) Start the water pump 1, and after the car wash waste water is further removed from solid debris and slick oil through the grille and oil separator, it is drawn into the bottom of the reaction tank 33 through the water inlet valve 2. , the aerator 4 is started, the intake valve 5 is opened, and the aeration is started. At the same time, the medicine pump 6 is started, the dosing valve a7 is opened, and the compound oxidation enhancer in the dosing box a8 is started to be added for aeration. Oxidation reaction. At this time, the stirring motor 10 is also started synchronously for stirring. After the composite oxidation enhancer is added according to the predetermined dosage, the drug pump 6 and the drug dosing valve a7 are closed, and the scraper 12 removes the foam and suspended impurities on the liquid surface. The material is scraped into the semicircular collection tank 13, discharged to the underground ditch through the overflow pipe 14, and flows back to the water collection well. After aeration and oxidation treatment for 30 minutes, the aerator 4 and the intake valve 5 are closed. At the same time, the drug is pumped The pump 6 is started, the dosing valve b15 is opened, and the multi-component composite inorganic macromolecule flocculant polymerized aluminum iron silicate in the dosing box b16 is started to be added for coagulation reaction. Valve b15, condense reaction at 35r/min, pH8.5 for 5min, after the coagulation reaction, restart the pumping pump 6, open the dosing valve c17, and start to add the organic coagulant polyacrylamide in the dosing box c18. Coagulation reaction, after dosing according to the predetermined dosage, close the drug pump 6 and dosing valve c17, and coagulate at 35r/min and pH8.5 for 2min; The blades 11 stop stirring; let stand for 10 minutes to settle, and the sludge cover 19 installed on the lower end of the multifunctional agitator 11 above the diaphragm type micro-aerator head 3 blocks the sedimentation sludge to prevent the micro-aerator head 3 from being covered and blocked by sludge; After the settlement is over, start the suction pump 1 again, open the residual water valve 20, discharge the remaining sewage in the pipeline, close the residual water valve 20 after 5 seconds, and open the filter water inlet valve 22 at the same time to filter the oxidation-enhanced coagulation effluent, and filter the effluent Discharge to the disinfection aeration clarifier 24 through the outlet pipe 23 of the self-cleaning filter 21; the thick slag liquid concentrated in the self-cleaning filter 21 is regularly discharged from its sewage outlet 30 without stopping the machine to the underground ditch to return to the water collection well; When the treated water in the reaction tank 33 is discharged to the lower water level of the water level detector 9, the water pump 1 and the self-cleaning filter 21 water inlet valve 22 are closed, and the mud discharge valve 28 of the reaction tank 33 is opened to discharge mud. After the mud is discharged, the tap water is turned on The backwash valve 29 flushes for 5 seconds, and the discharged sludge and backwash flow back into the water collection well through the underground ditch. Close the mud discharge valve 28 and the backwash valve 29 after the muddy water is discharged, and after the first cycle treatment process ends, repeat the above-mentioned 2) process to carry out the second cycle treatment, and so on and forth, the waste water is treated continuously.

The treated water collected in the aeration and clarification tank 24 is injected with disinfectant, the aeration valve 25 of the disinfection aeration tank 24 is opened, and gap aeration and clarification are carried out through the porous aeration pipe 26, and the clarified water flows from the upper part of the disinfection aeration and clarification tank. The overflow outlet 31 overflows out and is reused for car washing; the sediment is discharged from the mud outlet 27 at the bottom of the funnel to the underground ditch and returns to the water collection well; the water collection well is regularly cleaned and the sludge is transported out for treatment.

Claims (9)

1. Small Washing parking lot wastewater from car washer treatment facility, it is characterized in that this equipment primary structure is an oxidized coagulated precipitation reactor of aeration (32), it is made of retort (33), whipping device and aerating system, whipping device is positioned at the top of retort (33) jar, and the diaphragm type aeration head (3) of aerating system is positioned at the bottom of retort (33) jar.

2. Small Washing according to claim 1 parking lot wastewater from car washer treatment facility, it is characterized in that described whipping device is made of agitator motor (10), agitating vane (11), the bottom of agitator motor (10) is provided with cleaning shoe (12), the bottom is provided with mud cover (19).

3. Small Washing according to claim 1 parking lot wastewater from car washer treatment facility is characterized in that the sidewall of described retort (33) is provided with water level detector (9) and semi-circular foam scum silica frost receiving tank (13).

4. Small Washing according to claim 1 parking lot wastewater from car washer treatment facility, it is characterized in that described aerating system is made of decline aeration head (3), aerator (4), intake valve (5) of diaphragm, aerator (4) and intake valve (5) are positioned at the outside bottom the retort (33).

5. Small Washing according to claim 1 parking lot wastewater from car washer treatment facility, it is characterized in that described retort (33) is connected with medicine system, medicine system is made of medicine-sucking pump (6), dosing valve a (7), dosing valve b (15), dosing valve c (17), dosing tank a (8), dosing tank b (16), dosing tank c (18), and medicine system is communicated with dosing hole (34) on the retort (33) by medicine-sucking pump (6).

6. Small Washing according to claim 1 parking lot wastewater from car washer treatment facility, a side that it is characterized in that described retort (33) is provided with the water-in and water-out system, the water-in and water-out system is made of influent waste water valve (2), lift pump (1), surplus water water drain valve (20), and links to each other with retort (33) by lift pump (1).

7. Small Washing according to claim 1 parking lot wastewater from car washer treatment facility, a side that it is characterized in that described retort (33) is provided with the self-stip filtering system, the self-stip filtering system is made of self-cleaning filter (21), strainer water intaking valve (22), sewage draining exit (30), rising pipe (23), the self-stip filtering system links to each other with retort (33) through the lift pump (1) of filter water intaking valve (22), water-in and water-out system, and the rising pipe of self-stip filtering system (23) is communicated with sterilization aeration settling pond (24).

8. Small Washing according to claim 1 parking lot wastewater from car washer treatment facility is characterized in that a side of described retort (33) is provided with back-washing valve (29), the bottom is provided with mud valve (28).

9. Small Washing according to claim 7 parking lot wastewater from car washer treatment facility, it is characterized in that being respectively arranged with on the described sterilization aeration settling pond (24) porous aeration tube (26), wash water valve (27), clear liquor and overflow the mouth of a river (31), porous aeration tube (26) is communicated with aeration settling pond intake valve (25).

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