CN103304078A - Laboratory wastewater treatment process equipment and wastewater treatment method using same - Google Patents

Abstract

The invention provides a laboratory wastewater treatment process equipment and a wastewater treatment method using the wastewater treatment method, including a regulating tank, a coagulation sedimentation tank, and an electrical automatic control device; a pH adjusting device is connected to the top of the regulating pond; the regulating pond is connected to the top through a lift pump The coagulation sedimentation tank with coagulation dosing device 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, Activated carbon filter, buffer tank, 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 press filter through a screw pump machine. The beneficial effect of the invention is 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 the advantages of simple structure, wide application range, simple operation and the like.

Description

A laboratory wastewater treatment process equipment and a wastewater treatment method using the same

technical field

The invention relates to a wastewater treatment process equipment and a wastewater treatment method, in particular to a laboratory wastewater treatment process equipment and a wastewater treatment method using the same.

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 present invention is to provide a laboratory wastewater treatment process equipment with wide application range, simple manufacture, reusable water and further advanced treatment to obtain high-quality water to realize the regeneration and utilization of laboratory wastewater. The wastewater treatment method using it is 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 present invention is: a laboratory wastewater treatment process equipment, including a regulating tank, a coagulation sedimentation tank, an intermediate pool, and an electrical automatic control device; There is a pH adjustment device; the adjustment tank is connected to the coagulation-settling tank through a lifting pump, and the 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 passes through The pipeline is connected to an intermediate pool, and the top of the intermediate pool is connected to an ozone generator through a pipeline; the other end of the intermediate pool is connected in series through a pipeline to a filter pump, a quartz sand filter, an activated carbon filter, a buffer pool, an ultrafiltration 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, and filter press are all connected to the electric automatic control The 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.

The acid dosing box is filled with a hydrochloric acid solution with a molar concentration of 0.5 mol/L, and the alkali dosing box is filled with a sodium hydroxide solution with a molar concentration of 0.5 mol/L.

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 end of the pipeline; fillers are provided in the intermediate pool, and the fillers include The mass percentage is 97%-99% of the filler body and the mass percentage is 1%-3% of supported copper oxide, the filler body is any one of Raschig ring or Pall ring, and the filler is used to increase residence time of ozone gas.

The supported copper oxide is a metal catalyst that can promote the decomposition of ozone in water to generate free radicals with strong oxidative properties, thereby significantly improving its decomposition effect on highly stable organic substances in water.

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 present invention utilizes above-mentioned laboratory wastewater treatment process equipment to process the processing method of laboratory wastewater, comprising the following steps:

1) The phase of drug dosing, quality adjustment and volume adjustment: the laboratory wastewater enters the adjustment pool, and the pH adjustment device is used for water quality homogenization treatment, and the pH value is adjusted to 6-8 to obtain homogenized wastewater;

2) Sedimentation and clarification stage: the homogenized wastewater enters the coagulation sedimentation tank, and the solid-liquid separation of the wastewater is carried out by the coagulation dosing device, and the solid is deposited at the bottom of the coagulation sedimentation tank to obtain supernatant and sludge;

3) Advanced oxidation stage: the supernatant overflows into the intermediate pool, and the supernatant is aerated by an ozone generator in the intermediate pool to obtain the aerated supernatant;

4) Advanced treatment stage: the supernatant after aeration treatment, after advanced treatment by quartz sand filter, activated carbon filter, ultrafiltration membrane module, reverse osmosis module and electrodeionization module, effectively removes organic matter and suspended The final clean water is obtained, and the clean water enters the water production tank;

5) Sludge treatment stage: The sludge at the bottom of the coagulation sedimentation tank is discharged into the sludge collection tank through the sludge discharge pipe, and after adding coagulant and coagulant aid, it is discharged to the filter press for dehydration through the screw pump.

The coagulation dosing device in step 2) includes a coagulant dosing box and a coagulant aid dosing box, and the coagulant dosing box is equipped with PAC, that is, polyaluminum chloride, and its dosage is 10 -100mg/L, the coagulant aid dosing box is filled with PAM, that is, polyacrylamide, and its dosage is 1-5mg/L. When the wastewater enters the water inlet pipe of the mixing tank, the coagulant is first added , and then add coagulant to the mixing tank when the wastewater mixed with coagulant enters the mixing tank.

The advantages and positive effects of the present invention are: due to the adoption of the above-mentioned technical scheme, the laboratory wastewater can be effectively treated by the present invention through the stages of drug-dosing conditioning, quality-adjusting, sedimentation and clarification, advanced oxidation, deep filtration, and sludge treatment. Suspended solids and organic matter in the water are treated, so that the treated laboratory wastewater can be reused, and advanced treatment can also be performed to obtain high-quality water and realize the recycling of laboratory wastewater; it has simple structure, wide application range, and simple operation Etc.

Description of drawings

Fig. 1 is a structural representation of the present invention;

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 a partial enlarged view of the deep processing stage of the present invention;

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. Stirrer

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; A pH adjustment device is connected through a dosing pipe; the regulating tank 1 is connected to the coagulation-sedimentation tank 26 through a lift pump 4, and a coagulation dosing device is connected to 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 sequentially connected with a filter pump 6 through a pipeline. , quartz sand filter 7, activated carbon filter 8, buffer tank 9, ultrafiltration membrane module 10, reverse osmosis module 11, electrodeionization module 12, water production tank 13; The bottom end of described coagulation sedimentation tank 26 passes mud The 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 device , lifting pump 4, coagulation dosing device, ozone generator 5, filter pump 6, screw pump 15, filter press 16 are all electrically connected with the electric 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; Filler, the filler includes a mass percentage of 97%-99% filler body and a mass percentage of 1%-3% supported copper oxide, the filler body is any one of Raschig rings or Pall rings, The filler is used to increase 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 .

Below in conjunction with above-mentioned laboratory wastewater treatment process equipment to the processing method of processing laboratory wastewater of the present invention, be specifically described:

Example 1

According to the above process equipment, when the filler in the intermediate pool is 97% by mass of filler body and 3% by mass of supported copper oxide, and the filler body is Raschig rings.

1) The stage of chemical dosing, conditioning, quality and volume adjustment: after the laboratory wastewater enters the regulating pool 1 through the grid 17, the acid dosing box 20 and the alkali dosing box 21 are used to homogenize the water quality, and the pH value is adjusted to 6 to obtain homogenization after waste water;

2) Sedimentation and clarification stage: the homogenized waste water enters the stirring tank 25 through the lifting pump 4, and first adds a coagulant to the pipeline of the water inlet of the stirring tank 25, and the dosage is 12mg/L, and then in the stirring tank 25 Dosing coagulant in the interior, the dosage of coagulant is 1mg/L, the waste water overflowed into sedimentation tank 26 to carry out solid-liquid separation through the dosing treatment, solid precipitates in the bottom of sedimentation tank 26, obtains supernatant and sludge;

3) Advanced oxidation stage: the supernatant overflows into the intermediate pool 2, and the supernatant is aerated by the ozone generator 5 in the intermediate pool 2 to obtain the aerated supernatant;

4) Advanced treatment stage: the supernatant after the aeration treatment is subjected to advanced treatment through the quartz sand filter 7, the activated carbon filter 8, the ultrafiltration membrane module 10, the reverse osmosis module 11, and the electrodeionization module 12 to obtain the final Clear water, clear water enters the water production pool 13;

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

Example 2

According to the above-mentioned process equipment, when the filler in the intermediate pool is a filler body with a mass percentage of 98% and a supported copper oxide with a mass percentage of 2%, and the filler body is a Pall ring.

1) The stage of chemical dosing, conditioning, quality and volume adjustment: after the laboratory wastewater enters the regulating pool 1 through the grid 17, the acid dosing box 20 and the alkali dosing box 21 are used to homogenize the water quality, and the pH value is adjusted to 7 to obtain homogenization after waste water;

2) Sedimentation and clarification stage: the homogenized wastewater enters the stirring tank 25 through the lift pump 4, and first adds a coagulant to the pipeline of the water inlet of the stirring tank 25, and the dosage is 60mg/L, and then in the stirring tank 25 Dosing coagulant, the dosage of coagulant is 4mg/L, the waste water overflowed into sedimentation tank 26 to carry out solid-liquid separation through the dosing treatment, solid precipitates in the bottom of sedimentation tank 26, obtains supernatant and sludge;

3) Advanced oxidation stage: the supernatant overflows into the intermediate pool 2, and the supernatant is aerated by the ozone generator 5 in the intermediate pool 2 to obtain the aerated supernatant;

4) Advanced treatment stage: the supernatant after the aeration treatment is subjected to advanced treatment through the quartz sand filter 7, the activated carbon filter 8, the ultrafiltration membrane module 10, the reverse osmosis module 11, and the electrodeionization module 12 to obtain the final Clear water, clear water enters the water production pool 13;

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

Example 3

According to the above process equipment, when the filler in the intermediate pool is 99% by mass of filler body and 1% by mass of supported copper oxide, and the filler body is Raschig rings.

1) The stage of chemical dosing, conditioning, quality and volume adjustment: after the laboratory wastewater enters the regulating pool 1 through the grid 17, the acid dosing box 20 and the alkali dosing box 21 are used to homogenize the water quality, and the pH value is adjusted to 8 to obtain homogenization after waste water;

2) Sedimentation and clarification stage: the homogenized waste water enters the stirring tank 25 through the lifting pump 4, and first adds a coagulant to the pipeline of the water inlet of the stirring tank 25, and the dosage is 90mg/L, and then in the stirring tank 25 Dosing coagulant in the interior, the dosage of coagulant is 3mg/L, the waste water overflowed into the settling tank 26 to carry out solid-liquid separation through the dosing treatment, the solid precipitates in the bottom of the settling tank 26, obtains the supernatant and sludge;

3) Advanced oxidation stage: the supernatant overflows into the intermediate pool 2, and the supernatant is aerated by the ozone generator 5 in the intermediate pool 2 to obtain the aerated supernatant;

4) Advanced treatment stage: the supernatant after the aeration treatment is subjected to advanced treatment through the quartz sand filter 7, the activated carbon filter 8, the ultrafiltration membrane module 10, the reverse osmosis module 11, and the electrodeionization module 12 to obtain the final Clear water, clear water enters the water production pool 13;

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

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

Claims (10)

1. a Laboratory Waste Water Treatment processing unit is characterized in that: comprise equalizing tank, coagulative precipitation tank, intermediate pool, quartz sand filtration device, activated charcoal filter, buffering pond, hyperfiltration membrane assembly, reverse osmosis module, electrodeionization module, produce pond, electric autocontrol device; The top of described equalizing tank is communicated with the pH regulator device by chemical feed pipe; Described equalizing tank links to each other with described coagulative precipitation tank by lift pump, and the top of described coagulative precipitation tank is communicated with the coagulation dosing device by chemical feed pipe; There is intermediate pool the upper end of described coagulative precipitation tank by pipe connection, and the top of described intermediate pool is communicated with ozonizer by pipeline; The other end of described intermediate pool is serially connected with filtration pump, quartz sand filtration device, activated charcoal filter, buffering pond, hyperfiltration membrane assembly, reverse osmosis module, electrodeionization module successively, produces the pond by pipeline; The bottom of described coagulative precipitation tank is connected with the mud collection box by shore pipe, and described mud collection box is connected with pressure filter by spiral pump, and the upper end of described mud collection box links to each other with the water inlet of equalizing tank; Described pH regulator device, lift pump, coagulation dosing device, ozonizer, filtration pump, spiral pump, pressure filter all are electrically connected with described electric autocontrol device.

2. Laboratory Waste Water Treatment processing unit according to claim 1, it is characterized in that: the water inlet place of described equalizing tank is provided with grid, and be provided with liquidometer in the described equalizing tank, pH meter and agitator; Described intermediate pool, buffering are equipped with liquidometer on the pond; Described liquidometer, pH meter all are electrically connected with described electric autocontrol device.

3. Laboratory Waste Water Treatment processing unit according to claim 1, it is characterized in that: described pH regulator device comprises sour dosing tank and alkali dosing tank; Described coagulation dosing device comprises coagulating agent dosing tank and coagulant aids dosing tank, and is equipped with the dosing volume pump on the described sour dosing tank, alkali dosing tank, coagulating agent dosing tank, coagulant aids dosing tank; Described dosing volume pump is electrically connected with described electric autocontrol device.

4. Laboratory Waste Water Treatment processing unit according to claim 1, it is characterized in that: described coagulative precipitation tank comprises agitated pool and the settling tank that is connected, be provided with agitator in the described agitated pool, described coagulation dosing device links to each other with the water inlet of described agitated pool, and described settling tank is provided with inclined tube.

5. Laboratory Waste Water Treatment processing unit according to claim 1, it is characterized in that: the pipeline between described ozonizer and intermediate pool is provided with water sprayer, and is provided with boring aeration pipe in the bottom of described pipeline; Be provided with filler in the described intermediate pool, described filler comprises that mass percent is the filler body of 97%-99% and the loading type cupric oxide that mass percent is 1%-3%, and described filler body is any one in Raschig ring or the Pall ring.

6. Laboratory Waste Water Treatment processing unit according to claim 1, it is characterized in that: described filtration pump is connected with the other end of described ozonizer; Described filtration pump is electrically connected with described electric autocontrol device.

7. Laboratory Waste Water Treatment processing unit according to claim 1 is characterized in that: be provided with backwashing pump between described quartz sand filtration device and the described product pond; Described backwashing pump is electrically connected with described electric autocontrol device.

8. Laboratory Waste Water Treatment processing unit according to claim 1 is characterized in that: be provided with ultrafiltrate pump between described buffering pond and the described hyperfiltration membrane assembly, be provided with topping-up pump between described hyperfiltration membrane assembly and the described reverse osmosis module; Described ultrafiltrate pump and topping-up pump all are electrically connected with described electric autocontrol device.

9. Laboratory Waste Water Treatment processing unit according to claim 1 is characterized in that: be equipped with the under meter that is electrically connected with described electric autocontrol device between between described reverse osmosis module and the electrodeionization module and electrodeionization module and the described product pond; Be connected with magnetic valve and variable valve in parallel on the described reverse osmosis module; Described magnetic valve and variable valve all are electrically connected with described electric autocontrol device; Described pressure filter is plate-and-frame filter press.

10. a laboratory waste water treatment method that utilizes each described Laboratory Waste Water Treatment processing unit of claim 1-9 is characterized in that: by comprising the steps:

1) the modified accent amount stage of dosing: laboratory waste water enters equalizing tank, utilizes the pH regulator device to carry out the water quality homogenizing and handles, and regulating the pH value is 6-8, gets the waste water after the homogenizing;

2) the precipitation clarification stage: the waste water after the homogenizing enters coagulative precipitation tank, utilizes the coagulation dosing device that waste water is carried out solid-liquid separation, and solid precipitation gets supernatant liquor and mud in the bottom of coagulative precipitation tank;

3) the advanced oxidation stage: the supernatant liquor overflow enters intermediate pool, and supernatant liquor carries out aeration by ozonizer to supernatant liquor in intermediate pool handles, and gets the supernatant liquor after aeration is handled;

4) the advanced treatment stage: the supernatant liquor after aeration is handled, after quartz sand filtration device, activated charcoal filter, hyperfiltration membrane assembly, reverse osmosis module, electrodeionization module are carried out advanced treatment, get final clear water, clear water enters and produces the pond;

5) the sludge treatment stage: the mud of coagulative precipitation tank bottom enters the mud collection box by the spoil disposal pipeline, add coagulating agent and coagulant aids after, drain into pressure filter by spiral pump and dewater.

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