CN206447617U - A kind of bion pulling flow type electrocatalysis oxidation apparatus - Google Patents
A kind of bion pulling flow type electrocatalysis oxidation apparatus Download PDFInfo
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- CN206447617U CN206447617U CN201621321279.4U CN201621321279U CN206447617U CN 206447617 U CN206447617 U CN 206447617U CN 201621321279 U CN201621321279 U CN 201621321279U CN 206447617 U CN206447617 U CN 206447617U
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Abstract
The utility model is related to a kind of bion pulling flow type electrocatalysis oxidation apparatus, includes influent waste water pump, reactor, outlet pipe, pole inversing device, PAC chemicals dosing plants, PAM chemicals dosing plants, device for absorbing tail gas；The reactor includes N number of battery lead plate, N number of catalyst post plate, reactor inner chamber is separated into N+1 compartment by reactor from the head to the tail by N number of battery lead plate, N number of battery lead plate presses positive pole, negative pole is staggered, catalyst post plate is mounted in top n compartment, the tail wall of N+1 compartments slopes inwardly, the two poles of the earth of the pole inversing device connect the positive pole and negative pole of N number of electrode respectively, the PAC chemicals dosing plants, PAM chemicals dosing plants pass through delivery pump and the PAC of reactor, PAM's adds mouth connection, the tail gas absorption pipeline that tail gas suction inlet and device for absorbing tail gas are equipped with the top of each compartment is connected.The utility model can open the structural bond of the larger organic matter of the difficult degradation in waste water, toxicity, or long-chain molecule is broken into short chain molecule, CO2、H2O etc., so as to reduce its toxicity, improves its B/C, greatly enhances its biodegradability.
Description
Technical field
The utility model is related to the processing of a kind of water, waste water, sewage or mud, more particularly, to a kind of bion plug-flow
Formula electrocatalysis oxidation apparatus.Basis of this method based on pulling flow type anaerobe reactor Yu electroxidation method, by industrial difficult degradation
Macromolecular substances in waste water resolve into small organic molecule or CO2、H2O, effectively reduces the COD of industrial wastewaterCr, improve
The B/C of waste water, adds the biodegradability of waste water, so that providing stable water inlet water source for subsequent biochemical system.
Background technology
In the prior art, for the treatment of Organic Wastewater of high concentration, it is combined using materialized pretreatment method with bioanalysis
Mode can remove most of poisonous and harmful substance, and waste water is after pretreatment, poisonous class, difficult degradation class content in waste water
It can decrease.Conventional materialized pretreatment method is added and advanced oxidation processes including oxidant, and conventional oxidant has O3, H2O2,
NaClO etc., but these oxidants have that oxidability is weaker, addition is larger, easily form secondary pollution problems.Therefore it is more
Industrial Wastewater Treatment when use advanced oxidation processes, using it is wider include supercritical Water Oxidation Technology, photocatalysis oxidation technique,
Membrane separation technique and Electrocatalytic Oxidation etc..
Industrial wastewater COD after advanced oxidation processesCr、BOD5Capital decrease to some degree, so that B/C has necessarily
The rise of degree, as the B/C ＞ 0.3 of waste water after pretreatment, microorganism has good treatment effect to the waste water energy.Therefore originally
Biochemical ability of the utility model to improve industrial wastewater in the way of catalysis oxidation, reduces it to a certain extent as target
CODCr, the B/C of industrial wastewater is improved, so that stable water inlet water source is provided for subsequent biochemical system, while low dense handling some
Can be directly by COD during degree organic wastewaterCrHandle to up to standard.
The content of the invention
The purpose of this utility model is to provide a kind of bion pulling flow type electrocatalytic oxidation for prior art weak point
Makeup is put, reduction industrial wastewater CODCr, its B/C is improved, so as to strengthen the biodegradability of waste water, is provided surely for subsequent biochemical system
Determine water source.
The utility model is by the following technical programs in realization：A kind of bion pulling flow type electrocatalysis oxidation apparatus, its
It is characterised by, includes influent waste water pump, reactor, outlet pipe, pole inversing device, PAC chemicals dosing plants, PAM chemicals dosing plants, tail gas
Absorption plant；Wherein：
The reactor includes N number of battery lead plate, N number of catalyst post plate, reactor by N number of battery lead plate by reactor inner chamber by
Head is separated into N+1 compartment to tail, and N number of battery lead plate is staggered by positive pole, negative pole, is mounted on urging in top n compartment
Agent post plate, the tail wall of N+1 compartments slopes inwardly, and the bottom of the 1st compartment of the reactor is provided with and influent waste water
The connected water inlet of pump, the top of the N+1 compartment of reactor is provided with outlet pipe, separately sets PAC, PAM mouth that adds, institute
State and be equipped with tail gas suction inlet at the top of each compartment；
The PAC chemicals dosing plants, PAM chemicals dosing plants include agitator respectively；
On the device for absorbing tail gas pipeline containing tail gas absorption and condenser, the spray thrower being sequentially connected, the spray thrower
Portion is provided with purified gas outlet, and spray thrower bottom is provided with absorbing liquid floss hole；
The device for absorbing tail gas pipeline containing tail gas absorption and condenser, tank body and the spray thrower being sequentially connected, the tank
Body top is provided with purified gas outlet, and tank body lower part is provided with absorbing liquid floss hole, and the absorbing liquid is alkali lye；
The pole inversing device is the positive and negative electrode switch of direct current；
The two poles of the earth of the pole inversing device connect the positive pole and negative pole of N number of electrode, the PAC chemicals dosing plants, PAM dosings dress respectively
Put and connected by PAC, PAM of delivery pump and the reactor mouth that adds, be equipped with the top of each compartment tail gas suction inlet with
The tail gas absorption pipeline connection of device for absorbing tail gas.
It is described it is N number of be 5.
The catalyst post surface is in network structure, and the mesh of grid is 2 ~ 3, and the catalyst in it is IR-CF.
The catalyst is that IR-CF is made up of active component, carrier and co-catalyst, and the active component is Ni, changed
Property activated aluminum, Ti mixture, carrier be γ-Al2O3, co-catalyst is activated carbon.
The pole plate bottom sets 45 ° of corners.
The pole plate anode is that titanium applies ruthenium, and negative electrode is graphite.
The intilted angle of tail wall of the N+1 compartments is 30 degree.
The bottom of the N+1 compartment of reactor is provided with sludge outlet, and sludge is back to through reflux pump and pipeline
Second compartment.
The time of falling pole and the frequency and the COD of processed waste waterCrProportional.
Good effect of the present utility model is：The utility model proposes a kind of bion pulling flow type electrocatalytic oxidation makeup
Put, have the following advantages that：1）When handling these waste water using electrocatalysis oxidation apparatus of the present utility model, pass through DC electric field
Act on by the structural bond opening of the larger organic matter of the difficult degradation in waste water, toxicity under the synergy of catalyst post, or will
Long-chain molecule is broken into short chain molecule, CO2、H2O etc., so as to reduce its toxicity, improves its B/C, its biodegradability is increased
By force, the inflow requirement of subsequent biochemical processing is met.2）The utility model is run at normal temperatures and pressures, reduces operating cost and behaviour
Control is required, cost-effective can be applied to production.3）The pulling flow type method of operation that the utility model is used can make waste water abundant
Effectively contacted with catalyst post, so as to play the effect of catalyst to the full extent, enhance the treatment effect of waste water.4）
The self-timing pole inversing device that the present apparatus is set, plays a part of automatic cleaning electrode, so as to reduce pole during operation
Plate corrosion losses, extension battery lead plate service life, and avoid system at regular intervals and unpick and wash other that brought during battery lead plate and ask
Topic.5）The gas produced during plant running enters tail gas absorber by the gas-liquid separator at top and absorbed, from
And ensure pernicious gas and do not enter non-secondary pollution in air.
Brief description of the drawings
Fig. 1 is one embodiment structural representation that the utility model is provided.
Embodiment
Embodiment is elaborated below in conjunction with the accompanying drawings：Fig. 1 is one embodiment that the utility model is provided
Structural representation.In figure, a kind of bion pulling flow type electrocatalysis oxidation apparatus includes influent waste water pump 1, reactor 2, water outlet
Pipe 3, pole inversing device 4, PAC chemicals dosing plants 5, PAM chemicals dosing plants 6, device for absorbing tail gas 7；Wherein：
The reactor includes N number of battery lead plate, N number of catalyst post plate 41, and reactor is by N number of battery lead plate by reactor inner chamber
N+1 compartment is separated into from the head to the tail, and N number of battery lead plate is staggered by positive pole 42, negative pole 43, pacified in top n compartment
Equipped with catalyst post plate 41, the tail wall of N+1 compartments slopes inwardly, the bottom of the 1st compartment of the reactor be provided with
The connected water inlet 1 of influent waste water pump, the top of the N+1 compartment of reactor is provided with outlet pipe 3, separately sets PAC, PAM
Add mouth, be equipped with tail gas absorption mouthful at the top of each compartment.In the present embodiment, N number of is 5, plus last separation
Room has 6 compartments.Plate in the present embodiment applies ruthenium for titanium, and cathode plate is graphite.Sewage after pretreatment
After in into reactor, classification is progressively handled, and can be reacted when flowing through positive electrode, negative electrode in electrode surface, in this mistake
Cheng Zhonghui generates HClO, HCl, H2O2, the larger molecular organicses in waste water can be oxidized to by these product tool strong oxidizing properties
Small organic molecule is directly mineralized into CO2+H2O, so as to reduce the COD of waste waterCr, it is subsequent biochemical system while improving its B/C
System provides stable water inlet water source.
The pole inversing device 4 is the positive and negative electrode switch of direct current.Because this catalytic oxidizing equipment is applied in CODCrConcentration
In higher organic wastewater, being immersed in for a long time in this waste water can be in electrode surface formation pollutant, so as to reduce electrode
Service life, influences treatment effeciency, therefore regularly clear to electrode progress by the way of pole in the catalytic oxidizing equipment
Wash and activate, the pollutant for being attached to electrode is departed from electrode surface in time.The time of pole and the frequency and processed waste water
CODCrProportional, as the COD of waste waterCrThe frequency of the pole higher time is longer when higher.In the present embodiment, setting
The time of falling pole is 10min.
The catalyst post plate surface is in network, and catalyst post plate bottom upstream face is provided with slope, the angle on slope
For 45 °, the mesh of grid is 2 ~ 3, and the catalyst in it is IR-CF.In this structure, network structure makes connecing for waste water and catalyst
Contacting surface product increase, so as to increase wastewater treatment efficiency.The catalyst loaded in catalyst post is IR-CF type effective catalysts, should
Catalyst is mainly made up of three parts, i.e. active component, carrier and co-catalyst, and wherein active component is Ni, modified active
The mixture of aluminium, Ti, carrier is γ-Al2O3, auxiliary agent is activated carbon.Modified active aluminium under Ni, Ti collective effect with can speed up
The speed that the chemical bond such as C-C, C-N, C-S is decomposed under conditions of electrolysis in waste water, when these chemical bonds are in the work of electroxidation
With it is lower be Hydrocarbon Organic by hydrogenolysis after, the COD of waste waterCrBeing obtained for toxicity greatly reduces, and biodegradability has obtained pole
Big raising.
The PAC chemicals dosing plants 5, PAM chemicals dosing plants 6 include agitator respectively.Last compartment is provided with polymerization
Aluminium chloride PAC, polyacrylamide PAM throwing devices, the particulate matter for making organic wastewater be produced after being decomposed by electrocatalytic oxidation
Flocculation sediment is carried out Deng sludge, the sludge discharge after flocculation sediment.
The pipeline containing tail gas absorption of device for absorbing tail gas 7 71 and condenser 72, tank body and the spray thrower being sequentially connected
73, tank body top is provided with purified gas outlet 74, and tank body lower part is provided with absorbing liquid floss hole, and the absorbing liquid is alkali lye.Due to
Some escaping gases, such as H can be produced unavoidably when larger molecular organicses are degraded during electrocatalytic oxidation2S、Cl2、H2、
CH4Deng gas, if these gases are handled without centralized collection absorption, greatly pollution can be caused to plant environment, so that shadow
Human body health is rung, therefore these gases initially enter condenser via tail gas suction inlet through pipeline, reduce gas temperature, and
Accelerate the cohesion of harmful substance in tail gas, gas enters in the spray thrower of tank body, its uniform and stable is entered tail gas absorption
Liquid --- in alkali lye, more than 90% can be reached via the tail gas clean-up rate after this processing, national emission request is met.
The two poles of the earth of the pole inversing device 4 connect the positive pole and negative pole of N number of battery lead plate respectively, and the PAC chemicals dosing plants 5, PAM add
Medicine device 6 is connected by delivery pump with PAC, PAM of reactor 2 mouth that adds respectively, and the tail gas at the top of each compartment is inhaled
The tail gas absorption pipeline connection of entrance and device for absorbing tail gas.
The utility model further takes following measure：
Pole plate bottom sets 45 ° of corners in the utility model.The structure can promote water distribution uniformity, dead band be reduced, so as to subtract
The phenomenons such as dead angle, short stream and the channel being likely to occur in few system operation, make waste water dynamic in catalyst column compartment reclaimed water mass flow
Evenly.Channel, and the certain impact velocity of increase can be prevented simultaneously, be follow-up compartment wound in favor of the water inlet of follow-up compartment
Make more preferable hydraulics.Due to the presence of 45 ° of corners, the overall length that current flow around deflection plate and make it be flowed through in reactor
Degree increase, make enter waste water therein by upward flow and it is lower to stream in the way of flow through whole reactor, effectively increase reactor
Dischargeable capacity, the hydraulic detention time that is likely to occur is less than the probability of theoretical residence time in reduction actual moving process,
Increase treatment effect to a certain extent.
The intilted angle of tail wall of the 6th compartment is 30 degree in the utility model.The structure makes compartment have
Sedimentation basin function, enables to precipitate in this cell bottom via the sludge after PAC, PAM flocculation sediment, so as to reduce water outlet SS, protects
Demonstrate,prove water outlet limpid.
The bottom of the 6th compartment of the reactor is provided with sludge outlet 8, and sludge flows back through reflux pump 82 and pipeline 81
To second compartment.Moved in circles using such, the sludge yield of system can be reduced, the mesh of sludge reduction is reached
's.
The utility model so works：
At normal temperatures and pressures, organic wastewater is pre-processed through certain, such as：Oil separation grit chamber or air supporting or regulating reservoir etc.,
Specifically depending on waste water quality condition, the utility model bion pulling flow type electrocatalysis oxidation apparatus is entered by water inlet pipe, given up
Water enters through anode communicating pipe from the bottom of adjacent next pole room to be handled so as to proceed the electrocatalytic oxidation of second segment, directly
Extremely enter in last anode chamber of end.Hydraulic detention time is 0.5 ~ 1h in whole treatment unit for waste water device.To prevent
Some in the pole plate corrosion caused during system long-play or waste water have sticking material and are adhered on pole plate to reduce
Pole plate operational efficiency, the present apparatus is provided with timing pole, and pole can be automatically switched to down after 10min when device is continuously run, so that
Original positive pole is set to become negative pole, original negative pole becomes positive pole, in the presence of electric current, pollutant on pole plate etc. then can be certainly
It is dynamic to drop in the waste water of the system, small organic molecule is melted into by electrocatalytic oxidation or CO2+H2O is directly mineralized into, so as to reach
Clean the purpose of pole plate.Service condition is as shown in table 1 below, and the water outlet after processing is transported via water pump is gone out into next system unit
The gas produced during row enters via pipeline to be absorbed in device for absorbing tail gas, and device for absorbing tail gas is built-in to be filled with alkali
Regularly replaced after liquid, adsorption saturation.
The bion pulling flow type electrocatalysis oxidation apparatus service condition of table 1
| Unit | Operational factor | |
| Rise form flow velocity | mm·s-1 | 0.6~2 |
| Decline compartment flow velocity | mm·s-1 | 2.4~6 |
| Water inlet pH value | - | 7-10 |
| Running current | A | 1.5~3 |
| Working voltage | V | 3~6 |
| Residence time | h | 1~3 |
| Influent COD | mg/L | ＜ 3000 |
| Sludge concentration | mg/L | 8000 |
| Inflow temperature | °C | ＜ 40 |
| The frequency of falling pole | Min/ times | 10 |
With reference to embodiment, the utility model will be further described：
Embodiment one returns the guanidine glue fracturing outlet liquid ejected as process object using somewhere oil recovery factory producing well pressure break, adopts
It is pre-processed with this bion pulling flow type electrocatalysis oxidation apparatus, its turnover water quality is as shown in the table, after processing
Water outlet is processed as standard to meet subsequent biochemical, the COD for the fracturing outlet liquid that the extraction point is producedCrPeak is only 2452.8
Mg/L, but the BOD5 peaks of the waste water are also only 314.05mg/L, B/C ≈ 0.1, it is difficult to Biochemical method is used, waste water passes through
After electrocatalysis oxidation apparatus, CODCrWith BOD5A certain degree of reduction is obtained for, the device energy stable operation makes CODCrRemove
Rate is maintained in the range of 30% ~ 35%, and B/C is increased in the range of 0.3 ~ 0.4, this catalytic oxidizing equipment to the SS of the waste water and
Oil content also has very strong removal ability, greatly improves the biodegradability of the waste water, meets subsequent biochemical inflow requirement, reduction
Load impact of the waste water to subsequent biochemical system.
The raw water quality of table 2
| Date | pH | Electrical conductivity | Oil content | SS | CODcr | BOD5 | B/C |
| September 4 days | 9 | 2340 | 130 | 80.4 | 1722.2 | 172.22 | 0.1 |
| September 5 days | 6.5 | 8900 | 118.4 | 116 | 2092 | 188.28 | 0.09 |
| September 8 days | 8.9 | 2324 | 176 | 157.6 | 1970.1 | 216.71 | 0.11 |
| September 9 days | 8.1 | 2730 | 336 | 420 | 2721 | 217.68 | 0.08 |
| September 12 days | 7.1 | 5250 | 198 | 337 | 2452.8 | 220.75 | 0.09 |
| September 14 days | 7 | 7620 | 162 | 210 | 2415.8 | 314.05 | 0.13 |
The catalysis oxidation effluent quality of table 3
| Date | pH | Electrical conductivity | Oil content | SS | CODcr | BOD5 | B/C |
| September 4 days | 8.9 | 2530 | 13 | 4.02 | 1205.54 | 409.88 | 0.34 |
| September 5 days | 8.2 | 5210 | 11.84 | 5.8 | 1370.26 | 541.83 | 0.37 |
| September 8 days | 8 | 5560 | 17.6 | 7.88 | 1306.18 | 551.63 | 0.4 |
| September 9 days | 8 | 7180 | 33.6 | 21 | 1833.95 | 723.79 | 0.38 |
| September 12 days | 7.9 | 7000 | 19.8 | 16.85 | 1685.07 | 566.60 | 0.33 |
| September 14 days | 7.9 | 6650 | 16.2 | 10.5 | 1560.61 | 659.51 | 0.39 |
The coal bed gas produced water that embodiment two is discharged using somewhere petroleum well field is process object, using this bion plug-flow
Formula electrocatalysis oxidation apparatus is pre-processed to it, and it is as shown in the table that it passes in and out water quality, and water outlet after processing is to meet sewage
Comprehensive discharge standard, the recovered water COD of well head dischargeCrPeak is only 251.6mg/L, BOD5Only 26.2mg/L during highest,
B/C only 0.13, although CODCrIt is relatively low, but because B/C is extremely low, conventional biochemical process can not be degraded, but use this bion
After pulling flow type electrocatalysis oxidation apparatus, wastewater effluent CODCr60mg/L is decreased below, the present apparatus is to the F in the waste water-
There is certain removal effect, make the F in water outlet-10mg/L is all decreased below, the one-level in integrated wastewater discharge standard is met
Standard.
The raw water quality of table 4
The catalysis oxidation effluent quality of table 5
Embodiment of the present utility model is described above in conjunction with drawings and Examples, the structure that embodiment is provided not structure
Paired limitation of the present utility model, those skilled in the art in the art can adjust according to being actually needed, in appended right
It is required that in the range of make various deformations or amendments in protection domain.
Claims (8)
1. a kind of bion pulling flow type electrocatalysis oxidation apparatus, it is characterised in that include influent waste water pump, reactor, water outlet
Pipe, pole inversing device, PAC chemicals dosing plants, PAM chemicals dosing plants, device for absorbing tail gas；Wherein：
The reactor includes N number of battery lead plate, N number of catalyst post plate, reactor by N number of battery lead plate by reactor inner chamber by head extremely
Tail is separated into N+1 compartment, and N number of battery lead plate is staggered by positive pole, negative pole, and catalyst is mounted in top n compartment
Post, the tail wall of N+1 compartments slopes inwardly, and the bottom of the 1st compartment of the reactor is provided with to be connected with influent waste water pump
Water inlet, the top of the N+1 compartment of reactor provided with outlet pipe, separately set PAC, PAM mouth that adds, described each point
Tail gas absorption mouthful is equipped with the top of compartment；
The PAC chemicals dosing plants, PAM chemicals dosing plants include agitator respectively；
On the device for absorbing tail gas pipeline containing tail gas absorption and condenser, tank body and the spray thrower being sequentially connected, the tank body
Portion is provided with purified gas outlet, and tank body lower part is provided with absorbing liquid floss hole, and the absorbing liquid is alkali lye；
The pole inversing device is the positive and negative electrode switch of direct current；
The two poles of the earth of the pole inversing device connect the positive pole and negative pole of N number of electrode respectively, and the PAC chemicals dosing plants, PAM chemicals dosing plants lead to
Cross PAC, PAM of delivery pump and reactor the tail gas suction inlet and tail gas absorption that add at the top of mouth connection, each compartment
The tail gas absorption pipeline connection of device.
2. bion pulling flow type electrocatalysis oxidation apparatus according to claim 1, it is characterised in that it is described it is N number of be 5.
3. bion pulling flow type electrocatalysis oxidation apparatus according to claim 1 or 2, it is characterised in that the catalyst
Post surface is in network structure, and the mesh of grid is 2~3, and the catalyst in it is IR-CF.
4. bion pulling flow type electrocatalysis oxidation apparatus according to claim 1 or 2, it is characterised in that the pole plate bottom
Portion sets 45 ° of corners.
5. bion pulling flow type electrocatalysis oxidation apparatus according to claim 1 or 2, it is characterised in that the pole plate sun
Extremely titanium applies ruthenium, and negative electrode is graphite.
6. bion pulling flow type electrocatalysis oxidation apparatus according to claim 1 or 2, it is characterised in that the N+1 points
The intilted angle of tail wall of compartment is 30 degree.
7. bion pulling flow type electrocatalysis oxidation apparatus according to claim 1 or 2, it is characterised in that the reactor
The bottom of the N+1 compartment is provided with sludge outlet, and sludge is back to second compartment through reflux pump and pipeline.
8. bion pulling flow type electrocatalysis oxidation apparatus according to claim 1 or 2, it is characterised in that the when of falling pole
Between COD with the frequency and processed waste waterCrProportional.
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| CN201621321279.4U CN206447617U (en) | 2016-12-05 | 2016-12-05 | A kind of bion pulling flow type electrocatalysis oxidation apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621321279.4U CN206447617U (en) | 2016-12-05 | 2016-12-05 | A kind of bion pulling flow type electrocatalysis oxidation apparatus |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821408A (en) * | 2019-03-12 | 2019-05-31 | 上海第二工业大学 | A kind of device and method of ozone-catalysis oxidation collaboration processing volatile organic matter |
| CN110183010A (en) * | 2019-04-24 | 2019-08-30 | 广西广宇水资源技术开发有限公司 | A kind of high protein waste water pretreatment system and method |
| CN110980918A (en) * | 2019-11-25 | 2020-04-10 | 哈尔滨工创环保科技有限公司 | Multistage ozone catalytic oxidation internal circulation device and use method |
| CN113184961A (en) * | 2021-05-31 | 2021-07-30 | 山东瑞克环境科技有限公司 | Organic matter waste water electro-catalytic degradation device |
-
2016
- 2016-12-05 CN CN201621321279.4U patent/CN206447617U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821408A (en) * | 2019-03-12 | 2019-05-31 | 上海第二工业大学 | A kind of device and method of ozone-catalysis oxidation collaboration processing volatile organic matter |
| CN110183010A (en) * | 2019-04-24 | 2019-08-30 | 广西广宇水资源技术开发有限公司 | A kind of high protein waste water pretreatment system and method |
| CN110980918A (en) * | 2019-11-25 | 2020-04-10 | 哈尔滨工创环保科技有限公司 | Multistage ozone catalytic oxidation internal circulation device and use method |
| CN113184961A (en) * | 2021-05-31 | 2021-07-30 | 山东瑞克环境科技有限公司 | Organic matter waste water electro-catalytic degradation device |
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