CN108947125A - A kind of method of coal chemical industrial waste water purification - Google Patents
A kind of method of coal chemical industrial waste water purification Download PDFInfo
- Publication number
- CN108947125A CN108947125A CN201810819523.7A CN201810819523A CN108947125A CN 108947125 A CN108947125 A CN 108947125A CN 201810819523 A CN201810819523 A CN 201810819523A CN 108947125 A CN108947125 A CN 108947125A
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- China
- Prior art keywords
- waste water
- ring
- support ring
- helix tube
- reaction tower
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention belongs to industrial waste water treatment, specifically a kind of method of coal chemical industrial waste water purification, waste water reaction tower used in this method includes reaction tower ontology and knockout tower, and the intrinsic bottom surface of reaction tower is equipped with vertical ozonizer；The upper end of knockout tower is connect by aqueduct with the side of reaction tower ontology；Further include helix tube and swing module, sets flexible helix tube on the ozonizer；The swing module includes sliding block, gear, oscillating rod and support ring, and two sides are equipped with straight-tooth on the sliding block, and sliding block is used for band moving gear and rotates；The gear is mounted on ozone inside pipe wall, and gear side and oscillating rod one end are affixed；The oscillating rod other end is equipped with support ring；The support ring socket is on the coil.Waste-water treatment tower used in this method is by helix tube and swings module, so that ozone fast reaction in reaction tower, to realize the efficient advanced treating of coal chemical industrial waste water.
Description
Technical field
The invention belongs to industrial waste water treatment, specifically a kind of method of coal chemical industrial waste water purification.
Background technique
Coal chemical industrial waste water is a kind of complicated component and difficult for biological degradation organic wastewater, and main organic principle is phenols chemical combination
Object, polycyclic aromatic hydrocarbon (PAH) and heterocyclic compound containing S, N, O etc., toxic, harmful difficult for biological degradation pollutant, although by
Pretreatment, multi-stage biological processing, even materialization advanced treating, the still difficult discharge standard for reaching national requirements of water outlet.Therefore, coalification
The qualified discharge of work waste water has become the bottleneck for restricting Developing Coal Chemical Industry, carries out further depth to coal chemical industrial waste water
Processing has become the urgent need of coal chemical industry development.The method of coal chemical industrial waste water processing has very much, and advanced treating is exactly wherein
One kind, to this, the invention proposes a kind of methods that coal chemical industrial waste water purifies.
Also occur some further treatment technique schemes using ozone in the prior art, such as application No. is
2017107699716 Chinese patent discloses a kind of inexpensive coal chemical industrial waste water advanced treating CoSD reaction tower, including
Reaction tower ontology, reaction tower ontology upper end is equipped with wastewater inlet, and the intrinsic bottom surface of reaction tower is equipped with vertical ozone
The lower surface of pipe, the reaction tower ontology is equipped with ozone booster pump, can be launched and be urged to reaction tower ontology by the first feeding port
Agent can pass through ozonizer and aeration to reaction tower ontology extraction ozone by ozone booster pump so that reaction is more thorough
Pipe discharges gas into reaction tower ontology, so that reaction is more abundant, it can be by unreacted in reaction tower ontology by aspiration pump
Ozone be drawn into knockout tower, waste residue in sewage can be separated by knockout tower, further by Water warfare, the low cost coal
Wastewater from chemical industry advanced treating CoSD react tower structure it is simple, it is easy to operate, be not only able to ozone adequately using, avoid generating
Secondary pollution, and save water purification cost.The technical solution can be realized the advanced treating of coal chemical industrial waste water, but the program
Middle ozone is not enough with reacting for waste water, and efficiency has much room for improvement；
The invention proposes a kind of method of coal chemical industrial waste water purification, this method use can be realized high efficiency advanced treating
Waste-water treatment tower, thus achieve the purpose that purify coal chemical industrial waste water.
Summary of the invention
In order to make up for the deficiencies of the prior art, the method for a kind of coal chemical industrial waste water purification proposed by the present invention, in this method
Ozone catalyst is put into instead by the waste-water treatment tower used by the way that sewage to be pumped into reaction tower ontology by wastewater inlet
It, then will be smelly with the helix tube of ozonizer connection in Ying Taben body, then by the way that ozone to be extracted into ozonizer by ozone booster pump
In oxygen evolution to reaction tower ontology；When being filled with ozone in ozonizer, the sliding block in ozonizer is to top slide, thus and ozone
Inside pipe wall gear friction, and then oscillating rod is driven, oscillating rod drives support ring to swing again, further such that helix tube is swung,
So that ozone comes into full contact with waste water, reaction efficiency is improved.
The technical solution adopted by the present invention to solve the technical problems is: a kind of coal chemical industrial waste water purification of the present invention
Method, the method steps are as follows:
Step 1: waste water is imported in physical treatment pond, carries out oil removal, dephenolize, deamination and flocculation sedimentation；
Step 2: the waste water after physical treatment in step 1 is imported in biochemical treatment tank, carries out secondary treatment；
Step 3: the secondary treatment waste water in step 2 is imported in the waste-water treatment tower using ozone catalytic, is carried out deep
Degree processing；
Step 4: it using treated the water of water quality detecting device detecting step three, is discharged after reaching discharge standard；
Wherein, the waste-water treatment tower includes reaction tower ontology and knockout tower, and reaction tower ontology upper end is equipped with sewage
Import, the intrinsic bottom surface of reaction tower are equipped with vertical ozonizer；The lower surface of the reaction tower ontology is equipped with ozone booster pump；
The upper end of reaction tower ontology side is equipped with the first feeding port；The upper end of knockout tower passes through aqueduct and the one of reaction tower ontology
Side connection；Further include helix tube and swing module, sets flexible helix tube, helix tube both ends and ozonizer on the ozonizer
Internal connection, the helix tube are equipped with equally distributed venthole；The swing module include sliding block, gear, oscillating rod and
Support ring, the sliding block are arranged inside ozonizer；Two sides are equipped with straight-tooth on the sliding block, and sliding block is used for band moving gear and turns
It is dynamic；The gear is mounted on ozone inside pipe wall, and gear side and oscillating rod one end are affixed；The oscillating rod other end is equipped with branch
Pushing out ring；The support ring socket is on the coil.In use, sewage is pumped into reaction tower ontology by wastewater inlet, it will be smelly
VPO catalysts are put into reaction tower ontology, by the way that ozone is extracted into ozonizer by ozone booster pump, then with ozonizer connection
Helix tube ozone is discharged into reaction tower ontology；When being filled with ozone in ozonizer, sliding block in ozonizer to top slide,
So that, to drive oscillating rod, oscillating rod drives support ring to swing, so that spiral shell with the gear on ozone inside pipe wall is driven again
Coil is swung, so that ozone comes into full contact with waste water, improves reaction efficiency.
Preferably, the oscillating rod is connected with support ring by connecting rod；Described connecting rod one end is hinged on oscillating rod, connecting rod
The other end is fixed in support ring.In use, the connecting rod connected in oscillating rod and support ring, when oscillating rod stress is swung, band
Dynamic connecting rod swing improves reaction efficiency so as to achieve the effect that stir waste water.
Preferably, the support ring is made of an intermediate ring and two side rings, and side ring is located at intermediate ring two sides, institute
It states side ring and is connect with intermediate ring by elastic element.In use, will drive support ring when connecting rod swing and push out spiral
Pipe, so that the support ring connected by elastic element reduces helix tube local pressure, to improve helix tube to contract
Service life.
Preferably, the elastic element is spring or arc elastic plate；Arc elastic plate is to helix tube inner bulge.It uses
When, when connecting rod swing, drive support ring to contract, the waste water in arc elastic plate is extruded, to improve waste water
Flowing, and then can be improved reaction efficiency.
Preferably, fillet is arranged in the side ring and helix tube contact side.In use, being set on the inside of side ring when connecting rod swing
It sets fillet and reduces helix tube local pressure, so as to improve the service life of helix tube.
Preferably, horn-like through-hole is set in the support ring.In use, horn-like through-hole is set in support ring,
So that the mobility of waste water is improved by pinching when waste water passes through, so that ozone is sufficiently mixed with waste water, so as to improve reaction
Efficiency.
Preferably, the through-bore axis is vertical with connecting rod.In use, when link rotatable, resistance when waste water passes through through-hole
Reduce so as to preferably be passed through from through-hole, so that reaction efficiency improves.
Beneficial effects of the present invention are as follows:
1. a kind of method of coal chemical industrial waste water purification of the present invention, waste-water treatment tower used in this method pass through by
Sewage is pumped into reaction tower ontology by wastewater inlet, while ozone catalyst being put into reaction tower ontology, then passing through will be smelly
Ozone is extracted into ozonizer by oxygen booster pump, and then ozone is discharged into reaction tower ontology with the helix tube of ozonizer connection；
When being filled with ozone in ozonizer, the sliding block in ozonizer is to top slide, to drive the gear on ozone inside pipe wall；In turn
It drives and swings, oscillating rod drives support ring to swing again, further such that helix tube is swung；And between oscillating rod and support ring
Connecting rod is set, when oscillating rod stress is swung, connecting rod swing is driven to stir waste water；So that ozone sufficiently connects with waste water
Touching improves reaction efficiency.
2. a kind of method of coal chemical industrial waste water purification of the present invention, waste-water treatment tower used in this method pass through by
Support ring is arranged to be made of three rings, and when connecting rod swing, and connecting rod drives support ring to push out helix tube, to make
The support ring connected by elastic element is obtained to contract, reduces helix tube local pressure；And fillet is set on the inside of side ring, into
One step reduces helix tube stress；So as to improve the service life of helix tube.
3. a kind of method of coal chemical industrial waste water purification of the present invention, waste-water treatment tower used in this method pass through by
Elastic element is specifically configured to spring or arc elastic plate, can be swung to the arc elastic plate of helix tube side protrusion in support ring
When the waste water that squeezes in arc elastic plate improve reaction efficiency so as to improve the mobility of waste water；And in support ring
Horn-like through-hole is set, through-bore axis is vertical with connecting rod so that by pinching when waste water passes through, reduce resistance that waste water passes through from
And can preferably be passed through from through-hole, the mobility of waste water is improved, so that ozone is sufficiently mixed with waste water, so as to further
Improve reaction efficiency.
Detailed description of the invention
The present invention will be further explained below with reference to the attached drawings.
Fig. 1 is the flow chart of method of the invention；
Fig. 2 is the overall structure diagram of waste-water treatment tower used in the present invention；
Fig. 3 is the partial enlarged view in Fig. 2 at A；
Fig. 4 is the cross-sectional view of B-B in Fig. 3；
Fig. 5 is the structural schematic diagram of support ring of the invention；
In figure: reaction tower ontology 1, the first feeding port 12, knockout tower 2, ozonizer 3, helix tube 4, is swung wastewater inlet 11
Module 5, sliding block 51, gear 51, oscillating rod 53, support ring 54, connecting rod 55, intermediate ring 6, side ring 7, arc elastic plate 8, fillet 9,
Through-hole 10.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Specific embodiment is closed, the present invention is further explained.
As shown in Figures 1 to 5, the method for a kind of coal chemical industrial waste water purification of the present invention, the party
Steps are as follows for method:
Step 1: waste water is imported in physical treatment pond, carries out oil removal, dephenolize, deamination and flocculation sedimentation；
Step 2: the waste water after physical treatment in step 1 is imported in biochemical treatment tank, carries out secondary treatment；
Step 3: the secondary treatment waste water in step 2 is imported in the waste-water treatment tower using ozone catalytic, is carried out deep
Degree processing；
Step 4: it using treated the water of water quality detecting device detecting step three, is discharged after reaching discharge standard；
Wherein, the waste-water treatment tower includes reaction tower ontology 1 and knockout tower 2, and 1 upper end of reaction tower ontology is equipped with dirt
Water inlet 11, the bottom surface in reaction tower ontology 1 are equipped with vertical ozonizer 3；The lower surface of the reaction tower ontology 1 is equipped with ozone
Booster pump；The upper end of 1 side of reaction tower ontology is equipped with the first feeding port 12；The upper end of knockout tower 2 is by aqueduct and instead
The side of tower ontology 1 is answered to connect；Further include helix tube 4 and swing module 5, set flexible helix tube 4 on the ozonizer 3,
4 both ends of helix tube and 3 inside connection of ozonizer, the helix tube 4 are equipped with equally distributed venthole；The swing module 5
Including sliding block 51, gear 52, oscillating rod 53 and support ring 54, the sliding block 51 is arranged inside ozonizer 3；The sliding block 51
Upper two sides are equipped with straight-tooth, and sliding block 51 is used for band moving gear 52 and rotates；The gear 52 is mounted on 3 inner wall of ozonizer, gear 52
Side and 53 one end of oscillating rod are affixed；53 other end of oscillating rod is equipped with support ring 54；The support ring 54 is socketed in spiral
On pipe 4.In use, sewage is pumped into reaction tower ontology 1 by wastewater inlet 11, ozone catalyst is put into reaction tower ontology
In 1, by the way that ozone to be extracted into ozonizer 3 by ozone booster pump, then the helix tube 4 with 3 connection of ozonizer discharges ozone
Into reaction tower ontology 1；When being filled with ozone in ozonizer 3, the sliding block 51 in ozonizer 3 is to top slide, thus smelly with driving
Gear 52 on 3 inner wall of oxygen pipe, to drive oscillating rod 53, oscillating rod 53 drives support ring 54 to swing again, so that spiral
Pipe 4 is swung, so that ozone comes into full contact with waste water, improves reaction efficiency.
As a kind of embodiment of the invention, the oscillating rod 53 and support ring 54 are connected by connecting rod 55；The company
55 one end of bar is hinged on oscillating rod 53, and 55 other end of connecting rod is fixed in support ring 54.In use, oscillating rod 53 and support ring
The connecting rod 55 connected on 54 drives connecting rod 55 to swing when 53 stress of oscillating rod is swung so as to reach the effect of stirring waste water
Fruit, and then improve reaction efficiency.
As a kind of embodiment of the invention, the support ring 54 is made of an intermediate ring 6 and two side rings 7, side
Ring 7 is located at intermediate 6 two sides of ring, and the side ring 7 is connect with intermediate ring 6 by elastic element.In use, when connecting rod 55 is swung
When, it will drive support ring 54 and push out helix tube 4, so that the support ring 54 connected by elastic element is to contract,
4 local pressure of helix tube is reduced, to improve the service life of helix tube 4.
As a kind of embodiment of the invention, a kind of coal chemical industrial waste water advanced treating according to claim 3
CoSD reaction tower, the elastic element are spring or arc elastic plate 8；Arc elastic plate 8 is to 4 inner bulge of helix tube.It uses
When, when connecting rod 55 is swung, drive support ring 54 to contract, the waste water in arc elastic plate 8 is extruded, to improve useless
The flowing of water, and then can be improved reaction efficiency.
As a kind of embodiment of the invention, the side ring 7 contacts side with helix tube 4 and fillet 9 is arranged.In use, working as
When connecting rod 55 is swung, setting fillet 9 reduces 4 local pressure of helix tube on the inside of side ring 7, so as to improve the use of helix tube 4
Service life.
As a kind of embodiment of the invention, horn-like through-hole 10 is set in the support ring 54.In use, support
Horn-like through-hole 10 is set on ring 54, so that the mobility of waste water is improved by pinching when waste water passes through, so that ozone and waste water
It is sufficiently mixed, so as to improve reaction efficiency.
As a kind of embodiment of the invention, 10 axis of through-hole is vertical with connecting rod 55.In use, working as 55 turns of connecting rod
When dynamic, resistance reduces so as to preferably pass through from through-hole 10 when waste water passes through through-hole 10, so that reaction efficiency improves.
In use, sewage is pumped into reaction tower ontology 1 by wastewater inlet 11, ozone catalyst is put into reaction tower ontology
In 1, by the way that ozone to be extracted into ozonizer 3 by ozone booster pump, then the helix tube 4 with 3 connection of ozonizer discharges foul smell
Into reaction tower ontology 1；When being filled with ozone in ozonizer 3, the sliding block 51 in ozonizer 3 is to top slide, to drive ozone
Gear 52 on 3 inner wall of pipe, to drive oscillating rod 53, oscillating rod 53 drives support ring 54 to swing again, so that helix tube 4
It swings, so that ozone comes into full contact with waste water, improves reaction efficiency；And it is arranged between oscillating rod 53 and support ring 54
Connecting rod 55 drives connecting rod 55 to swing to stir waste water when 53 stress of oscillating rod is swung；And when connecting rod 55 is swung, even
Bar 55 drives support ring 54 to push out helix tube 4, so that the support connected by elastic element being made of three rings
Ring 54 reduces 4 local pressure of helix tube, to improve the service life of helix tube 4 to contract；It is set on the inside of side ring 7 simultaneously
Fillet 9 is set, 4 stress of helix tube is further reduced；Its elastic element is specially spring or arc elastic plate 8, to 4 side of helix tube
The arc elastic plate 8 of protrusion can squeeze the waste water in arc elastic plate 8 when support ring 54 is swung, to improve the stream of waste water
Dynamic property, can be improved reaction efficiency；And horn-like through-hole 10 is set in support ring 54, and 10 axis of through-hole and connecting rod 55 hang down
Directly, so that reducing the resistance that waste water passes through by pinching when waste water passes through so as to preferably pass through from through-hole 10, improving waste water
Mobility so that ozone is sufficiently mixed with waste water, so as to improve reaction efficiency.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Range is defined by the appending claims and its equivalent thereof.
Claims (7)
1. a kind of method of coal chemical industrial waste water purification, which is characterized in that the method steps are as follows:
Step 1: waste water is imported in physical treatment pond, carries out oil removal, dephenolize, deamination and flocculation sedimentation；
Step 2: the waste water after physical treatment in step 1 is imported in biochemical treatment tank, carries out secondary treatment；
Step 3: the secondary treatment waste water in step 2 is imported in the waste-water treatment tower using ozone catalytic, carries out depth
Reason；
Step 4: it using treated the water of water quality detecting device detecting step three, is discharged after reaching discharge standard；
Wherein, the waste-water treatment tower includes reaction tower ontology (1) and knockout tower (2), and reaction tower ontology (1) upper end is equipped with
Wastewater inlet (11), the bottom surface in reaction tower ontology (1) are equipped with vertical ozonizer (3)；The following table of the reaction tower ontology (1)
Face is equipped with ozone booster pump；The upper end of reaction tower ontology (1) side is equipped with the first feeding port (12)；Knockout tower (2) it is upper
End is connect by aqueduct with the side of reaction tower ontology (1)；It further include helix tube (4) and swing module (5), the ozonizer
(3) it is set on flexible helix tube (4), helix tube (4) both ends and ozonizer (3) internal connection, the helix tube (4) are equipped with
Equally distributed venthole；The swing module (5) includes sliding block (51), gear (52), oscillating rod (53) and support ring (54),
Sliding block (51) setting is internal in ozonizer (3)；Sliding block (51) two sides are equipped with straight-tooth, and sliding block (51) is used for band movable tooth
Take turns (52) rotation；The gear (52) is mounted on ozonizer (3) inner wall, and gear (52) side and oscillating rod (53) one end are solid
It connects；Oscillating rod (53) other end is equipped with support ring (54)；The support ring (54) is socketed on helix tube (4).
2. a kind of method of coal chemical industrial waste water purification according to claim 1, it is characterised in that: the oscillating rod (53) and
Support ring (54) is connected by connecting rod (55)；Described connecting rod (55) one end is hinged on oscillating rod (53), connecting rod (55) other end
It is fixed on support ring (54).
3. a kind of method of coal chemical industrial waste water purification according to claim 2, it is characterised in that: the support ring (54) by
One intermediate ring (6) and two side ring (7) compositions, side ring (7) are located at intermediate ring (6) two sides, the side ring (7) and centre
Ring (6) is connected by elastic element.
4. a kind of method of coal chemical industrial waste water purification according to claim 3, it is characterised in that: the support ring (54) by
One intermediate ring (6) and two side ring (7) compositions, side ring (7) are located at intermediate ring (6) two sides, the side ring (7) and centre
Ring (6) is connected by elastic element.
5. a kind of method of coal chemical industrial waste water purification according to claim 4, it is characterised in that: the side ring (7) and spiral shell
Coil (4) contacts side setting fillet (9).
6. a kind of method of coal chemical industrial waste water purification according to claim 1, it is characterised in that: on the support ring (54)
Horn-like through-hole (10) are set.
7. a kind of method of coal chemical industrial waste water purification according to claim 6, it is characterised in that: through-hole (10) axis
It is vertical with connecting rod (55).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810819523.7A CN108947125A (en) | 2018-07-24 | 2018-07-24 | A kind of method of coal chemical industrial waste water purification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810819523.7A CN108947125A (en) | 2018-07-24 | 2018-07-24 | A kind of method of coal chemical industrial waste water purification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108947125A true CN108947125A (en) | 2018-12-07 |
Family
ID=64464512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810819523.7A Withdrawn CN108947125A (en) | 2018-07-24 | 2018-07-24 | A kind of method of coal chemical industrial waste water purification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108947125A (en) |
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2018
- 2018-07-24 CN CN201810819523.7A patent/CN108947125A/en not_active Withdrawn
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Application publication date: 20181207 |