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

Abstract

The invention provides laboratory wastewater treatment process equipment and a wastewater treatment method using the same. The laboratory wastewater treatment process equipment comprises a regulating pond, a coagulative sedimentation pond and an electric automatic-control device, wherein a pH regulating device is communicated above the regulating pond; the regulating pond is connected with the coagulative sedimentation pond on which a coagulative dosing device is communicated through a lifting pump; the upper end of the coagulative precipitation pond is connected with an intermediate water pond; an ozone generator is communicated above the intermediate water pond; the other end of the intermediate water pond is sequentially connected in series with a filter pump, a quartz sand filter, an activated charcoal filter, a buffer water pond, an ultrafiltration membrane assembly, a reverse osmosis module, an electrodeionization module and a water yielding pond; the bottom end of the coagulative precipitation pond is connected with a sludge collecting box through a pipe; and the sludge collecting box is connected with a filter press through a screw pump. According to the invention, treated laboratory wastewater can be recycled and can also be subjected to advanced treatment to obtain high-quality yielded water, so that the recycling of the laboratory wastewater is realized; and the laboratory wastewater treatment process equipment provided by the invention has the advantages of simple structure, wide application range, easiness for operation, and the like.

Description

A kind of Laboratory Waste Water Treatment processing unit and use its method of wastewater treatment

Technical field

The present invention relates to a kind of waste water treatment process equipment and method of wastewater treatment, especially relate to a kind of Laboratory Waste Water Treatment processing unit and use its method of wastewater treatment.

Background technology

More and more deep along with scientific research, extensive, testing laboratory's waste water handling problem of each institution of higher learning and scientific research institutions becomes increasingly conspicuous, because laboratory waste water water quality is very complicated and be difficult to prediction, the discharging cycle is indefinite, wastewater flow rate is also irregular, so the comprehensive treating process of laboratory waste water and even resource utilization reuse belong to global problem.Though the quantity discharged of laboratory waste water significantly is less than trade effluent, but in view of it often contains acid ﹠ alkali liquid, poisonous and harmful three causes thing, heavy metal and some newborn substances, the pollutant component complexity, and there is instantaneous high pollution concentration equivalent risk, very likely pollute accident, therefore hazardness can not look down upon, strengthen the laboratory waste water management, to laboratory waste water effectively handle so that reuse imperative, yet it is current also very weak about the research of the effective treatment technology of laboratory waste water and technology both at home and abroad, especially China pays close attention to very not enough to the laboratory waste water emission problem, still there is not perfect management regulation, also lack simultaneously corresponding supporting technology technology, at present each laboratory waste water does not deal with substantially and directly enters city planting ductwork, for formulating the control measures of laboratory waste water discharging as early as possible, be badly in need of experimentizing the research of chamber wastewater processing technology technology and the development of equipment.

Chinese patent, the patent No. are 201120302893.7 to disclose a kind of " Laboratory Waste Water Treatment device " it is made of wastewater collection jar, equalizing tank, reactive tank, settling bowl and activated carbon filter; The wastewater collection jar utilizes pipeline to link to each other with equalizing tank; Equalizing tank links to each other with reactive tank by the pipeline of band sump pump again; The rising pipe of reactive tank links to each other with settling bowl, and the upflow tube of settling bowl links to each other with activated carbon filter, and activated carbon filter connects the water purification delivery pipe.The shortcoming of this device is, technology is simple, and the scope of application is narrower, only can be as simple pre-treatment.

Chinese patent, the patent No. is 200920194435.9, " a kind of Laboratory Waste Water Treatment device " disclosed, this device comprises electrical control system and treatment unit for waste water, the water collecting basin, interior electrolyzer, micro cell, biological adsorption tank and the settling tank that connect successively before and after described treatment unit for waste water comprises are provided with aerating system in described interior electrolyzer, micro cell and the biological adsorption tank; In addition, the sludge filtration pond also is set for the treatment of mud.The shortcoming of this device is investment and working cost height, residual organic matter concentration height.

Chinese patent, the patent No. is 201210258812.7, " Laboratory Waste Water Treatment device " disclosed, this device comprises holding tank, neutralization precipitation case, acid proof pump, holding tank is provided with collection funnel, pH meter, dispensing kit, main shaft are installed on the neutralization precipitation case, main shaft is provided with stirring rake and heating core, neutralization precipitation case sidewall is provided with the clear liquid discharging pipe, the upper end is provided with vapor pipe, and neutralization precipitation case bottom is subsider, and the subsider bottom is provided with the discharge auger, discharge auger discharge port is connected with separating centrifuge, and separating centrifuge is provided with discharge port and liquid discharge pipe.This device shortcoming is: lack the organism processing power, also only can be as the simple pre-treatment of experiment waste water, and the scope of application is less.

Summary of the invention

But the problem to be solved in the present invention provide a kind of applied widely, affected simple, produce the water reuse and also can proceed advanced treatment, obtain high-quality water realize laboratory waste water regeneration a kind of Laboratory Waste Water Treatment processing unit and use its method of wastewater treatment, especially be fit to processing and the reuse of all kinds of laboratory waste water.

For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of Laboratory Waste Water Treatment processing unit comprises equalizing tank, coagulative precipitation tank, intermediate pool, 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.

Described ozonizer is used for the organism of degradation of sewage.

Further, 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.

Further, 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.

Be filled with the hydrochloric acid soln that volumetric molar concentration is 0.5mol/L in the described sour dosing tank, described alkali dosing tank is filled with the sodium hydroxide solution that volumetric molar concentration is 0.5mol/L.

Further, described coagulative precipitation tank comprises agitated pool and the settling tank that is connected, and is provided with agitator in the described agitated pool, and 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.

Further, 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%, described filler body is any one in Raschig ring or the Pall ring, and described filler is for increasing the residence time of ozone gas.

Described loading type cupric oxide is a kind of metal catalyst, can impel ozone in water to decompose, and produces to have the free radical of extremely strong oxidisability, thereby significantly improves it to the organic decomposition effect of high stability in the water.

Further, described filtration pump is connected with the other end of described ozonizer; Described filtration pump is electrically connected with described electric autocontrol device.

Further, 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, and described backwashing pump regularly carries out backwash to quartz sand filtration device and activated charcoal filter, and the current after the backwash return equalizing tank.

Further, 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, and described ultrafiltrate pump is that hyperfiltration membrane assembly supplies water, and described topping-up pump is the reverse osmosis module supercharging.

Further, 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.

Further, 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.

The present invention utilizes the treatment process of above-mentioned Laboratory Waste Water Treatment process equipment laboratory waste water, comprises 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, effectively remove organism and suspended substance in the water, 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.

Described step 2) coagulation dosing device comprises coagulating agent dosing tank and coagulant aids dosing tank, in the described coagulating agent dosing tank PAC is housed, it is polymerize aluminum chloride, its dosage is 10-100mg/L, is filled with PAM in the described coagulant aids dosing tank, i.e. polyacrylamide, its dosage is 1-5mg/L, when waste water entered the water inlet pipe of agitated pool, first dosing coagulant added coagulant aids then again in agitated pool after the waste water that is mixed with coagulating agent enters agitated pool.

Advantage and positively effect that the present invention has are: owing to adopt technique scheme, laboratory waste water utilizes the present invention through modified accent amount stage of dosing, precipitation clarification stage, advanced oxidation stage, depth type filtration stage, sludge treatment stage, can effectively handle suspended substance and organism in the water, but treated laboratory waste water reuse thus, also can carry out advanced treatment, obtain high-quality product water, realize the regeneration of laboratory waste water; Have simple in structure, applied widely, simple operation and other advantages.

Description of drawings

Fig. 1 is structural representation of the present invention;

Fig. 2 is the partial enlarged drawing in modified accent amount stage of the dosing of Fig. 1, precipitation clarification stage and advanced oxidation stage;

Fig. 3 is the partial enlarged drawing in advanced treatment stage of the present invention;

Fig. 4 is the partial enlarged drawing in sludge treatment stage of the present invention.

Among the figure:

1, equalizing tank 2, intermediate pool 3, electric autocontrol device

4, lift pump 5, ozonizer 6, filtration pump

7, quartz sand filtration device 8, activated charcoal filter 9, buffering pond

10, hyperfiltration membrane assembly 11, reverse osmosis module 12, electrodeionization module

13, produce pond 14, mud collection box 15, spiral pump

16, pressure filter 17, grid 18, liquidometer

19, pH meter 20, sour dosing tank 21, alkali dosing tank

22, coagulating agent dosing tank 23, coagulant aids dosing tank 24, dosing volume pump

25, agitated pool 26, settling tank 27, agitator

28, inclined tube 29, water sprayer 30, boring aeration pipe

31, backwashing pump 32, ultrafiltrate pump 33, topping-up pump

34, under meter 35, magnetic valve 36, variable valve

Embodiment

Shown in Fig. 1,2,3,4, a kind of Laboratory Waste Water Treatment processing unit of the present invention comprises equalizing tank 1, coagulative precipitation tank 26, intermediate pool 2, electric autocontrol device 3; The top of described equalizing tank 1 is communicated with the pH regulator device by chemical feed pipe; Described equalizing tank 1 links to each other with described coagulative precipitation tank 26 by lift pump 4, and the top of described coagulative precipitation tank 26 is communicated with the coagulation dosing device by chemical feed pipe; There is intermediate pool 2 upper end of described coagulative precipitation tank 26 by pipe connection, and the top of described intermediate pool 2 is communicated with ozonizer 5 by pipeline; The other end of described intermediate pool 2 is serially connected with filtration pump 6, quartz sand filtration device 7, activated charcoal filter 8, buffering pond 9, hyperfiltration membrane assembly 10, reverse osmosis module 11, electrodeionization module 12 successively, produces pond 13 by pipeline; The bottom of described coagulative precipitation tank 26 is connected with mud collection box 14 by shore pipe, and described mud collection box 14 is connected with pressure filter 16 by spiral pump 15, and the upper end of described mud collection box 14 links to each other with the water inlet of equalizing tank 1; Described pH regulator device, lift pump 4, coagulation dosing device, ozonizer 5, filtration pump 6, spiral pump 15, pressure filter 16 all are electrically connected with described electric autocontrol device 3.

Described ozonizer 5 is used for the organism of degradation of sewage.

Preferably, the water inlet place of described equalizing tank 1 is provided with grid 17, and be provided with liquidometer 18 in the described equalizing tank 1, pH meter 19 and agitator 27; Described intermediate pool 2, buffering are equipped with liquidometer 18 on the pond 9; Described liquidometer 18, pH meter 19 all are electrically connected with described electric autocontrol device 3.

Preferably, described pH regulator device comprises sour dosing tank 20 and alkali dosing tank 21; Described coagulation dosing device comprises coagulating agent dosing tank 22 and coagulant aids dosing tank 23, and is equipped with dosing volume pump 24 on the described sour dosing tank 20, alkali dosing tank 21, coagulating agent dosing tank 22, coagulant aids dosing tank 23; Described dosing volume pump 24 is electrically connected with described electric autocontrol device 3.

Preferably, described coagulative precipitation tank 26 comprises agitated pool 25 and the settling tank 26 that is connected, and is provided with agitator 27 in the described agitated pool 25, and described coagulation dosing device links to each other with the water inlet of described agitated pool 25, and described settling tank 26 is provided with inclined tube 28.

Preferably, the pipeline between described ozonizer 5 and intermediate pool 2 is provided with water sprayer 29, and is provided with boring aeration pipe 30 in the bottom of described pipeline; Be provided with filler in the described intermediate pool 2, 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%, described filler body is any one in Raschig ring or the Pall ring, and described filler is for increasing the residence time of ozone gas.

Preferably, described filtration pump 6 is connected with the other end of described ozonizer 5; Described filtration pump 6 is electrically connected with described electric autocontrol device 3.

Preferably, be provided with backwashing pump 31 between described quartz sand filtration device 7 and the described product pond 13; Described backwashing pump 31 is electrically connected with described electric autocontrol device 3, and 31 pairs of quartz sand filtration devices 7 of described backwashing pump and activated charcoal filter 8 regularly carry out backwash, and the current after the backwash return equalizing tank 1.

Preferably, be provided with ultrafiltrate pump 32 between described buffering pond 9 and the described hyperfiltration membrane assembly 10, be provided with topping-up pump 33 between described hyperfiltration membrane assembly 10 and the described reverse osmosis module 11; Described ultrafiltrate pump 32 and topping-up pump 33 all are electrically connected with described electric autocontrol device 3, and described ultrafiltrate pump 32 is that hyperfiltration membrane assembly 10 supplies water, and described topping-up pump 33 is reverse osmosis module 11 superchargings.

Preferably, be equipped with the under meter 34 that is electrically connected with described electric autocontrol device 3 between between described reverse osmosis module 11 and the electrodeionization module 12 and electrodeionization module 12 and the described product pond 13.

Preferably, be connected with magnetic valve 35 and variable valve 36 in parallel on the described reverse osmosis module 11; Described magnetic valve 35 and variable valve 36 all are electrically connected with described electric autocontrol device 3; By the opening time of electric autocontrol device 3 control magnetic valves 35, can adjust the flush time of reverse osmosis module 11, also can regulate the concentrated stream amount of reverse osmosis module 11 by electric autocontrol device 3 regulating and controlling valves 36, magnetic valve 35 or variable valve 36 also can be controlled electrodeionization module 12 and produce the water time simultaneously, avoid producing water excess or very few, guaranteed product water effect, saved electric energy, described pressure filter 16 is plate-and-frame filter press 16.

Below in conjunction with the treatment process of above-mentioned Laboratory Waste Water Treatment processing unit to treatment of laboratory waste water of the present invention, be specifically described:

Embodiment 1

According to above-mentioned processing unit, the described filler in middle pond is that mass percent is that 97% filler body and mass percent are 3% loading type cupric oxide, and described filler body is when being Raschig ring.

1) the modified accent amount stage of dosing: after laboratory waste water enters equalizing tank 1 by grid 17, utilize sour dosing tank 20 and alkali dosing tank 21 to carry out the water quality homogenizing and handle, regulating the pH value is 6, gets the waste water after the homogenizing;

2) the precipitation clarification stage: the waste water after the homogenizing enters agitated pool 25 by lift pump 4, elder generation is at the pipeline place dosing coagulant of the water inlet of agitated pool 25, dosage is 12mg/L, in agitated pool 25, add coagulant aids then, the dosage of coagulant aids is 1mg/L, the waste water outflow that the process dosing is handled enters settling tank 26 and carries out solid-liquid separation, and solid precipitation gets supernatant liquor and mud in the bottom of settling tank 26;

3) the advanced oxidation stage: the supernatant liquor overflow enters intermediate pool 2, and supernatant liquor carries out aeration by 5 pairs of supernatant liquors of ozonizer in intermediate pool 2 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 7, activated charcoal filter 8, hyperfiltration membrane assembly 10, reverse osmosis module 11, electrodeionization module 12 are carried out advanced treatment, get final clear water, clear water enters and produces pond 13;

5) the sludge treatment stage: the mud of settling tank 26 bottoms enters mud collection box 14 by the spoil disposal pipeline, add coagulating agent and coagulant aids after, drain into pressure filter 16 by spiral pump 15 and dewater.

Embodiment 2

According to above-mentioned processing unit, the described filler in middle pond is that mass percent is that 98% filler body and mass percent are 2% loading type cupric oxide, and described filler body is when being Pall ring.

1) the modified accent amount stage of dosing: after laboratory waste water enters equalizing tank 1 by grid 17, utilize sour dosing tank 20 and alkali dosing tank 21 to carry out the water quality homogenizing and handle, regulating the pH value is 7, gets the waste water after the homogenizing;

2) the precipitation clarification stage: the waste water after the homogenizing enters agitated pool 25 by lift pump 4, elder generation is at the pipeline place dosing coagulant of the water inlet of agitated pool 25, dosage is 60mg/L, in agitated pool 25, add coagulant aids then, the dosage of coagulant aids is 4mg/L, the waste water outflow that the process dosing is handled enters settling tank 26 and carries out solid-liquid separation, and solid precipitation gets supernatant liquor and mud in the bottom of settling tank 26;

3) the advanced oxidation stage: the supernatant liquor overflow enters intermediate pool 2, and supernatant liquor carries out aeration by 5 pairs of supernatant liquors of ozonizer in intermediate pool 2 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 7, activated charcoal filter 8, hyperfiltration membrane assembly 10, reverse osmosis module 11, electrodeionization module 12 are carried out advanced treatment, get final clear water, clear water enters and produces pond 13;

5) the sludge treatment stage: the mud of settling tank 26 bottoms enters mud collection box 14 by the spoil disposal pipeline, add coagulating agent and coagulant aids after, drain into pressure filter 16 by spiral pump 15 and dewater.

Embodiment 3

According to above-mentioned processing unit, the described filler in middle pond is that mass percent is that 99% filler body and mass percent are 1% loading type cupric oxide, and described filler body is when being Raschig ring.

1) the modified accent amount stage of dosing: after laboratory waste water enters equalizing tank 1 by grid 17, utilize sour dosing tank 20 and alkali dosing tank 21 to carry out the water quality homogenizing and handle, regulating the pH value is 8, gets the waste water after the homogenizing;

2) the precipitation clarification stage: the waste water after the homogenizing enters agitated pool 25 by lift pump 4, elder generation is at the pipeline place dosing coagulant of the water inlet of agitated pool 25, dosage is 90mg/L, in agitated pool 25, add coagulant aids then, the dosage of coagulant aids is 3mg/L, the waste water outflow that the process dosing is handled enters settling tank 26 and carries out solid-liquid separation, and solid precipitation gets supernatant liquor and mud in the bottom of settling tank 26;

3) the advanced oxidation stage: the supernatant liquor overflow enters intermediate pool 2, and supernatant liquor carries out aeration by 5 pairs of supernatant liquors of ozonizer in intermediate pool 2 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 7, activated charcoal filter 8, hyperfiltration membrane assembly 10, reverse osmosis module 11, electrodeionization module 12 are carried out advanced treatment, get final clear water, clear water enters and produces pond 13;

5) the sludge treatment stage: the mud of settling tank 26 bottoms enters mud collection box 14 by the spoil disposal pipeline, add coagulating agent and coagulant aids after, drain into pressure filter 16 by spiral pump 15 and dewater.

More than one embodiment of the present of invention are had been described in detail, but described content only is preferred embodiment of the present invention, can not be considered to for limiting practical range of the present invention.All equalizations of doing according to the present patent application scope change and improve etc., all should still belong within the patent covering scope 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.