CN203373221U - Laboratory wastewater treatment process equipment - Google Patents

Abstract

The utility model provides a laboratory wastewater treatment process equipment, including a regulating pool, a coagulation sedimentation pond, and an electrical self-control device; a pH regulating device is connected to the top of the regulating pond; a coagulation dosing device is connected to the top of the regulating pond through a lifting pump The coagulation sedimentation tank is connected; the upper end of the coagulation sedimentation tank is connected to an intermediate pool, and the upper end of the intermediate pool is connected to an ozone generator; the other end of the intermediate pool is connected in series with a filter pump, a quartz sand filter, an activated carbon filter, and a buffer pool. , ultrafiltration membrane module, reverse osmosis module, electrodeionization module, water production tank; the bottom pipe of the coagulation sedimentation tank is connected to a sludge collection box, and the sludge collection box is connected to a filter press through a screw pump. The beneficial effect of the utility model is that the laboratory wastewater treated by the utility model can be reused, and can also be further treated to obtain high-quality water and realize the recycling of laboratory wastewater; it has simple structure and wide application range wide, simple operation and other advantages.

Description

A laboratory wastewater treatment process equipment

technical field

The utility model relates to a wastewater treatment process equipment, in particular to a laboratory wastewater treatment process equipment.

Background technique

With the deepening and widening of scientific research, the problem of laboratory wastewater treatment in universities and scientific research institutes has become increasingly prominent. Because the quality of laboratory wastewater is extremely complex and difficult to predict, the discharge cycle is uncertain, and the amount of wastewater is also irregular. Therefore, The comprehensive treatment and recycling of laboratory wastewater is a worldwide problem. Although the discharge of laboratory wastewater is significantly less than that of industrial wastewater, since it often contains acid and alkali, toxic and harmful substances, heavy metals and some new substances, the pollution components are complex, and there are risks such as instantaneous high pollution concentrations, it is very likely Pollution accidents are caused, so the hazards cannot be underestimated. It is imperative to strengthen the management of laboratory wastewater and effectively treat and reuse laboratory wastewater. However, the current domestic and foreign research on effective treatment technologies and processes for laboratory wastewater is still very weak. In particular, our country has not paid enough attention to the discharge of laboratory wastewater. There is no perfect management specification, and there is also a lack of corresponding supporting technologies. At present, the wastewater from various laboratories is basically discharged into the municipal pipe network without treatment. There is an urgent need for laboratory wastewater treatment technology research and equipment research and development.

Chinese patent, Patent No. 201120302893.7 discloses a "laboratory wastewater treatment device" which is composed of a wastewater collection tank, a regulating tank, a reaction tank, a settling tank and an activated carbon filter; the wastewater collecting tank is connected to the regulating tank by pipes; the regulating tank It is connected to the reaction tank through a pipeline with a sewage pump; the outlet pipe of the reaction tank is connected to the settling tank, the overflow pipe of the settling tank is connected to the activated carbon filter, and the activated carbon filter is connected to the clean water discharge pipe. The disadvantage of this device is that the process is simple, the scope of application is narrow, and it can only be used as a simple pretreatment.

Chinese patent, patent number 200920194435.9, discloses "a laboratory wastewater treatment device", which includes an electronic control system and a wastewater treatment unit, and the wastewater treatment unit includes a water collection pool, an internal electrolysis pool, a micro electrolysis Pool, biological adsorption tank and sedimentation tank, the inner electrolytic tank, micro-electrolytic tank and biological adsorption tank are provided with an aeration system; in addition, a sludge filter tank is also provided for sludge treatment. The disadvantage of this device is that the investment and operating costs are high, and the concentration of residual organic matter is high.

Chinese patent, patent number 201210258812.7, discloses a "laboratory wastewater treatment device", which includes a temporary storage tank, a neutralization sedimentation tank, and an acid-resistant pump. The temporary storage tank is provided with a collection funnel, and the neutralization precipitation tank is equipped with a pH Meter, dosing box, main shaft, the main shaft is equipped with stirring paddle and electric heating core, the side wall of the neutralization sedimentation tank is equipped with a clear liquid discharge pipe, the upper end is equipped with an exhaust pipe, the bottom of the neutralization sedimentation tank is a sedimentation tank, and the bottom of the sedimentation tank is set There is a discharge auger, the outlet of the discharge auger is connected with a centrifuge, and the centrifuge is provided with a discharge port and a liquid discharge pipe. The disadvantage of this device is that it lacks the ability to treat organic matter, and it can only be used as a simple pretreatment of experimental wastewater, and its scope of application is small.

Contents of the invention

The problem to be solved by the utility model is to provide a laboratory wastewater treatment process equipment that has a wide application range, is simple to manufacture, and can be reused or continued to be further treated to obtain high-quality water to realize the regeneration and utilization of laboratory wastewater. , especially suitable for the treatment and reuse of various laboratory wastewater.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a laboratory wastewater treatment process equipment, including a regulating tank, a coagulation sedimentation tank, an intermediate pool, and an electrical self-control device; A pH adjustment device is communicated; the adjustment tank is connected to the coagulation-settling tank through a lift pump, and a coagulation dosing device is connected to the top of the coagulation-settling tank through a dosing pipe; the upper end of the coagulation-settling tank An intermediate pool is connected through a pipeline, and an ozone generator is connected to the top of the intermediate pool through a pipeline; the other end of the intermediate pool is connected in series with a filter pump, a quartz sand filter, an activated carbon filter, a buffer pool, an ultra- Membrane module, reverse osmosis module, electrodeionization module, water production tank; the bottom of the coagulation sedimentation tank is connected to a sludge collection box through a sludge discharge pipe, and the sludge collection box is connected to a filter press through a screw pump , the upper end of the sludge collection tank is connected to the water inlet of the adjustment tank; the pH adjustment device, lift pump, coagulation dosing device, ozone generator, filter pump, screw pump, filter press are all connected The automatic control device is electrically connected.

The ozone generator is used for degrading organic matter in sewage.

Further, a grid is provided at the water inlet of the regulating pool, and a liquid level gauge, a pH meter and an agitator are provided in the regulating pool; a liquid level gauge is provided on the intermediate pool and the buffer pool; Both the position meter and the pH meter are electrically connected with the electric automatic control device.

Further, the pH adjustment device includes an acid dosing box and an alkali dosing box; the coagulation dosing device includes a coagulant dosing box and a coagulant aid dosing box, and the acid dosing box, alkali dosing The medicine box, the coagulant dosing box, and the coagulant aid dosing box are all equipped with dosing metering pumps; the dosing metering pumps are electrically connected to the electrical automatic control device.

Further, the coagulation-sedimentation tank includes a connected stirring tank and a sedimentation tank, the stirring tank is provided with an agitator, the coagulation dosing device is connected to the water inlet of the stirring tank, and the settling tank is equipped with There are inclined tubes.

Further, a water ejector is provided on the pipeline between the ozone generator and the intermediate pool, and a perforated aeration tube is provided at the bottom of the pipeline; fillers are provided in the intermediate pool, and the fillers are used To increase the residence time of ozone gas.

Further, the filter pump is connected to the other end of the ozone generator; the filter pump is electrically connected to the electrical automatic control device.

Further, a backwash pump is provided between the quartz sand filter and the water-producing pool; the backwash pump is electrically connected to the electrical automatic control device, and the backwash pump is regularly used for the quartz sand filter and the activated carbon filter. Backwashing is carried out, and the water after backwashing flows back to the regulating tank.

Further, an ultrafiltration pump is provided between the buffer pool and the ultrafiltration membrane assembly, and a booster pump is provided between the ultrafiltration membrane assembly and the reverse osmosis module; the ultrafiltration pump and booster pump Both are electrically connected with the electric automatic control device, the ultrafiltration pump supplies water for the ultrafiltration membrane module, and the booster pump pressurizes the reverse osmosis module.

Further, a flow meter electrically connected to the electric automatic control device is provided between the reverse osmosis module and the electrodeionization module and between the electrodeionization module and the produced water tank.

Further, the reverse osmosis module is connected with a parallel solenoid valve and a regulating valve; both the solenoid valve and the regulating valve are electrically connected to the electrical automatic control device; the filter press is a plate and frame filter press.

The advantages and positive effects of the utility model are: due to the adoption of the above-mentioned technical scheme, the laboratory waste water can be processed through the stages of drug-adding and quality-adjusting, the stage of sedimentation and clarification, the stage of advanced oxidation, the stage of deep filtration and the stage of sludge treatment by using the present invention. Effectively treat suspended solids and organic matter in water, so that the treated laboratory wastewater can be reused, and can also be subjected to advanced treatment to obtain high-quality water and realize the recycling of laboratory wastewater; it has simple structure, wide application range, and easy operation. Simple and other advantages.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a partial enlarged view of the stage of dosing, quality and quantity adjustment, sedimentation and clarification stage and advanced oxidation stage of Fig. 1;

Fig. 3 is the partial enlarged view of the deep processing stage of the present utility model;

Fig. 4 is a partially enlarged view of the sludge treatment stage of the present invention.

In the picture:

1. Adjusting pool 2. Intermediate pool 3. Electric automatic control device

4. Lift pump 5. Ozone generator 6. Filter pump

7. Quartz sand filter 8. Activated carbon filter 9. Buffer pool

10. Ultrafiltration membrane module 11. Reverse osmosis module 12. Electrodeionization module

13. Production pool 14. Sludge collection box 15. Screw pump

16. Filter press 17. Grille 18. Liquid level gauge

19. pH meter 20. Acid dosing box 21. Alkali dosing box

22. Coagulant dosing box 23. Coagulant aid dosing box 24. Dosing metering pump

25. Stirring tank 26. Sedimentation tank 27. Agitator

28. Inclined pipe 29. Water injector 30. Perforated aeration pipe

31. Backwash pump 32. Ultrafiltration pump 33. Booster pump

34. Flow meter 35. Solenoid valve 36. Regulating valve

Detailed ways

As shown in Figures 1, 2, 3, and 4, a laboratory wastewater treatment process equipment of the present invention includes a regulating tank 1, a coagulation sedimentation tank 26, an intermediate pool 2, and an electrical automatic control device 3; The upper side is connected with a pH adjustment device through a dosing pipe; the adjustment tank 1 is connected with the coagulation sedimentation tank 26 through a lift pump 4, and the coagulation dosing device is connected with a coagulation dosing device at the top of the coagulation sedimentation tank 26 through a dosing pipe The upper end of the coagulation sedimentation tank 26 is connected with an intermediate pool 2 through a pipeline, and the top of the intermediate pool 2 is connected with an ozone generator 5 through a pipeline; the other end of the intermediate pool 2 is connected with a filter pump in series through a pipeline 6. Quartz sand filter 7, activated carbon filter 8, buffer tank 9, ultrafiltration membrane assembly 10, reverse osmosis module 11, electrodeionization module 12, water production tank 13; The mud pipe is connected with a sludge collection box 14, and the sludge collection box 14 is connected with a filter press 16 through a screw pump 15, and the upper end of the sludge collection box 14 is connected with the water inlet of the adjustment tank 1; the pH adjustment The device, lifting pump 4, coagulation dosing device, ozone generator 5, filter pump 6, screw pump 15, and filter press 16 are all electrically connected to the electrical automatic control device 3.

The ozone generator 5 is used to degrade organic matter in sewage.

Preferably, the water inlet of the regulating pool 1 is provided with a grille 17, and the regulating pool 1 is provided with a liquid level gauge 18, a pH meter 19 and an agitator 27; Both are equipped with a liquid level gauge 18; the liquid level gauge 18 and the pH gauge 19 are both electrically connected to the electrical automatic control device 3 .

Preferably, the pH adjustment device includes an acid dosing box 20 and an alkali dosing box 21; the coagulation dosing device includes a coagulant dosing box 22 and a coagulant aid dosing box 23, and the acid dosing Medicine box 20, alkali dosing box 21, coagulant dosing box 22, coagulant aid dosing box 23 are all provided with dosing metering pump 24; connect.

Preferably, the coagulation sedimentation tank 26 includes a connected stirring tank 25 and a sedimentation tank 26, the stirring tank 25 is provided with an agitator 27, the coagulation dosing device and the water inlet of the stirring tank 25 connected to each other, and the settling tank 26 is provided with an inclined pipe 28 .

Preferably, a water ejector 29 is provided on the pipeline between the ozone generator 5 and the intermediate pool 2, and a perforated aeration tube 30 is provided at the bottom end of the pipeline; Fillers for increasing the residence time of ozone gas.

Preferably, the filter pump 6 communicates with the other end of the ozone generator 5 ; the filter pump 6 is electrically connected with the electrical automatic control device 3 .

Preferably, a backwash pump 31 is provided between the quartz sand filter 7 and the water production pool 13; The filter 7 and the active carbon filter 8 are regularly backwashed, and the backwashed water flows back to the regulating tank 1 .

Preferably, an ultrafiltration pump 32 is provided between the buffer pool 9 and the ultrafiltration membrane assembly 10, and a booster pump 33 is provided between the ultrafiltration membrane assembly 10 and the reverse osmosis module 11; Both the ultrafiltration pump 32 and the booster pump 33 are electrically connected to the electrical automatic control device 3 , the ultrafiltration pump 32 supplies water to the ultrafiltration membrane module 10 , and the booster pump 33 boosts the reverse osmosis module 11 .

Preferably, a flow meter 34 electrically connected to the electrical automatic control device 3 is provided between the reverse osmosis module 11 and the electrodeionization module 12 and between the electrodeionization module 12 and the produced water tank 13 .

Preferably, the reverse osmosis module 11 is connected with a parallel solenoid valve 35 and a regulating valve 36; the solenoid valve 35 and the regulating valve 36 are electrically connected with the electric automatic control device 3; the solenoid valve is controlled by the electric automatic control device 3 35, the flushing time of the reverse osmosis module 11 can be adjusted, and the concentrated water flow of the reverse osmosis module 11 can also be adjusted by controlling the regulating valve 36 through the electrical automatic control device 3. At the same time, the solenoid valve 35 or the regulating valve 36 can also control the electrodeionization The water production time of the module 12 avoids too much or too little water production, ensures the water production effect, and saves electric energy. The filter press 16 is a plate and frame filter press 16 .

The working process of this example: 1) In the stage of drug dosing, quality adjustment and volume adjustment, after the laboratory wastewater enters the adjustment pool 1 through the grid 17, the water quality is homogenized, and the pH value is adjusted by the pH adjustment device. The pH is generally adjusted to 6-8, The homogenized waste water enters the coagulation sedimentation tank 26 and is mixed with the coagulant and coagulant aid in the stirring tank 25 and precipitated in the sedimentation tank 26;

2) In the sedimentation and clarification stage, the wastewater mixed with coagulants and coagulants is separated from solid and liquid in the sedimentation tank 26, the solids settle at the bottom of the sedimentation tank 26, and the supernatant overflows into the intermediate tank 2;

3) In the advanced oxidation stage, an ozone generator 5 is installed above the intermediate pool 2, and the perforated aeration pipe 30 is used to introduce ozone into the intermediate pool 2 to degrade organic matter in the sewage;

4) In the advanced treatment stage, the ozone-oxidized sewage enters the quartz sand filter 7, activated carbon filter 8, buffer pool 9, ultrafiltration membrane module 10, reverse osmosis module 11, and electrodeionization module 12 in order to remove the pollutants in the water. Suspended solids and organic matter finally enter the produced water tank 13.

5) Sludge treatment stage: The sludge at the bottom of the sedimentation tank 26 is regularly discharged into the sludge collection box 14 through the sludge discharge pipe, and is discharged to the plate and frame filter press 16 through the screw pump 15 for dehydration after dosing.

An embodiment of the present utility model has been described in detail above, but the content described is only a preferred embodiment of the present utility model, and cannot be considered as limiting the implementation scope of the present utility model. All equal changes and improvements made according to the application scope of the utility model should still belong to the scope covered by the patent of the utility model.

Claims (10)

1. A laboratory wastewater treatment process equipment, characterized in that: it includes a regulating tank, a coagulation sedimentation tank, an intermediate pool, a quartz sand filter, an activated carbon filter, a buffer pool, an ultrafiltration membrane module, a reverse osmosis module, and an electric filter. Ion module, water production tank, electrical automatic control device; the top of the adjustment tank is connected with a pH adjustment device through a dosing pipe; the adjustment tank is connected with the coagulation sedimentation tank through a lift pump, and the coagulation sedimentation tank A coagulation dosing device is connected through a dosing pipe; the upper end of the coagulation sedimentation tank is connected to an intermediate pool through a pipeline, and an ozone generator is connected to the top of the intermediate pool through a pipeline; the other end of the intermediate pool is connected through a pipeline A filtration pump, a quartz sand filter, an activated carbon filter, a buffer pool, an ultrafiltration membrane module, a reverse osmosis module, an electrodeionization module, and a water production pool are connected in series in sequence; the bottom of the coagulation sedimentation tank is connected to the There is a sludge collection box, and the sludge collection box is connected with a filter press through a screw pump, and the upper end of the sludge collection box is connected with the water inlet of the adjustment tank; the pH adjustment device, lift pump, coagulation and dosing The device, the ozone generator, the filter pump, the screw pump and the filter press are all electrically connected with the electric automatic control device. 2. The laboratory wastewater treatment process equipment according to claim 1, characterized in that: a grid is provided at the water inlet of the regulating tank, and a liquid level gauge, a pH meter and an agitator are arranged in the regulating tank; Both the intermediate pool and the buffer pool are equipped with liquid level gauges; the liquid level gauges and pH gauges are both electrically connected to the electrical automatic control device. 3. The laboratory wastewater treatment process equipment according to claim 1, characterized in that: the pH adjustment device includes an acid dosing box and an alkali dosing box; the coagulation dosing device includes a coagulant dosing box and coagulant aid dosing box, and the acid dosing box, alkali dosing box, coagulant dosing box, coagulant aid dosing box are all provided with dosing metering pump; The electrical automatic control device is electrically connected. 4. The laboratory wastewater treatment process equipment according to claim 1, characterized in that: the coagulation sedimentation tank comprises a connected stirring tank and a sedimentation tank, the stirring tank is provided with an agitator, and the coagulation adding The drug device is connected to the water inlet of the stirring tank, and the sedimentation tank is provided with inclined pipes. 5. The laboratory wastewater treatment process equipment according to claim 1, characterized in that: a water ejector is provided on the pipeline between the ozone generator and the intermediate pool, and a water ejector is provided at the bottom of the pipeline A perforated aeration pipe; fillers are arranged in the middle pool. 6. The laboratory wastewater treatment process equipment according to claim 1, characterized in that: the filter pump is connected to the other end of the ozone generator; the filter pump is electrically connected to the electrical automatic control device. 7. The laboratory wastewater treatment process equipment according to claim 1, characterized in that: a backwash pump is provided between the quartz sand filter and the water production tank; the backwash pump and the electrical automatic control device electrical connection. 8. The laboratory wastewater treatment process equipment according to claim 1, characterized in that: an ultrafiltration pump is arranged between the buffer pool and the ultrafiltration membrane module, and the ultrafiltration membrane module and the reverse osmosis A booster pump is arranged between the modules; both the ultrafiltration pump and the booster pump are electrically connected to the electrical automatic control device. 9. The laboratory wastewater treatment process equipment according to claim 1, characterized in that: between the reverse osmosis module and the electrodeionization module and between the electrodeionization module and the water production pool are provided with the A flowmeter electrically connected to an electrical automatic control device. 10. The laboratory wastewater treatment process equipment according to claim 1, characterized in that: the reverse osmosis module is connected with a parallel electromagnetic valve and a regulating valve; electrical connection; the filter press is a plate and frame filter press.

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