CN107487905A - A kind of sewage treatment unit - Google Patents
A kind of sewage treatment unit Download PDFInfo
- Publication number
- CN107487905A CN107487905A CN201710948379.2A CN201710948379A CN107487905A CN 107487905 A CN107487905 A CN 107487905A CN 201710948379 A CN201710948379 A CN 201710948379A CN 107487905 A CN107487905 A CN 107487905A
- Authority
- CN
- China
- Prior art keywords
- storehouse
- processing storehouse
- disinfectant
- annex
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
-
- 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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- 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
- C02F1/5281—Installations for water purification using chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/03—Pressure
Abstract
The invention discloses a kind of sewage treatment unit,Including the first processing storehouse,Second processing storehouse,3rd processing storehouse and fourth process storehouse,Adsorption plate is provided with inside second processing storehouse,Flocculation pipe is provided with 3rd processing storehouse,Flocculant is filled with flocculation pipe,Fourth process the top of the warehouse is provided with chlorination equipment,Chlorination equipment includes disinfectant box,Disinfectant box is stretched into fourth process storehouse by disinfectant pipe,Disinfectant pipe lower end is provided with spray equipment,Spray equipment is provided with atomizer,Multiple disturbance parts are provided with disinfectant box,Disturbance part cross section is hexagon and individual side is concave surface arc,Part is disturbed along water (flow) direction stagger setting,Drainpipe is provided with and automatically adjusts isolating valve,It is simple in construction in the present invention,It is flexible to operation,L-type charcoal absorption plate adsorption efficiency is high,Automatically adjusting isolating valve can measure to pressure medium and isolating valve is accurately controlled by control system,Disinfection way efficiency high,Single treatment can be discharged directly.
Description
Technical field
The present invention relates to technical field of sewage, more particularly to a kind of sewage treatment unit.
Background technology
Current sewage treatment unit is general all only with coagulation and the technique of two stage treatment, while tradition
High-efficient treatment device structure it is complicated, it is expensive, so as to limit the actual use scope of device, meanwhile, life is dirty
The characteristics of water is that caused amount fluctuation is larger, and conventional treatment desultory can only carry out, it is necessary to which professional carries out on duty, frequency
Numerous switch water pump, fragile motor simultaneously reduce service life, and influence of the effluent flow rate to treatment effect is very big, if if fruit flow velocity
It is too big, it can will should intercept the soft grid slag that gets off and wash away, can also cause sewage outflow；If it is too small to cross flow velocity, grain in sewage
The larger debris in footpath would be possible to deposit in channel before grid, it is also possible to water pump is in dry operating condition, damages equipment.
The content of the invention
The invention aims to solve shortcoming present in prior art, following technical scheme is employed：One kind is raw
Sewage-treatment plant living, including the first processing storehouse, second processing storehouse, the 3rd processing storehouse and fourth process storehouse, first processing
The top of the warehouse is provided with water inlet, is connected on the right side of the first processing the top of the warehouse by grid with second processing storehouse, the second processing
Adsorption plate is provided with inside storehouse, passes through the downward processing storehouse of pipeline connection the 3rd, the 3rd processing on the right side of the second processing storehouse
Flocculation pipe is provided with storehouse, the flocculation pipe side wall, which is provided with some micropores and flocculation pipe, is filled with flocculant, the 3rd processing
Connection fourth process storehouse, the fourth process the top of the warehouse are provided with chlorination equipment on the right side of storehouse, and the chlorination equipment includes disinfectant box,
Disinfectant box is stretched into fourth process storehouse by disinfectant pipe, and disinfectant box and disinfectant the pipe junction is provided with measuring pump,
The disinfectant pipe lower end is provided with spray equipment, and the spray equipment surface is uniformly provided with atomizer, the atomizer with
The angle of spray equipment inwall is downward 15-75 ° of angle, and multiple disturbance parts, the disturbance piece are provided with the disinfectant box
Cross section is hexagon and individual side is concave surface arc, and the disturbance piece is right along water (flow) direction stagger setting, the fourth process storehouse
Side delivery port is provided with stabilier, and drainpipe is connected with the stabilier, and the drainpipe is provided with and automatically adjusts isolating valve, institute
State and draining pump be installed on the right side of drainpipe, it is described automatically adjust isolating valve include annex, control system, fine setting motor, protecting box,
Drive link, right end cap, left end cap, pressure sensor, blowdown apparatus, microgenerator, filter, the left end cap and right-hand member
Lid is connected to form the body for automatically adjusting isolating valve, and the body interior is provided with core, and the core is provided with groove, described
Drive link lower end is connected by the groove in core, and the drive link upper end stretches out body outer wall and is provided with gear structure, institute
State fine setting motor to be connected with drive link upper end by gear, the protecting box is arranged on above body and covers fine setting motor and biography
Lever, the annex include inlet and outlet, and the annex is connected by mounting hole with control system, and the control system includes
Increase income single-chip microcomputer and micro power, the blowdown apparatus is arranged on below annex entrance point by the snap ring of annex inwall, described
Filter is arranged on inside annex entrance point by the snap ring of annex inwall, and the left end cap of the annex port of export and valve body enters
Mouthful connection, the left end cap of the valve body is connected with pressure sensor, the control system and pressure sensor respectively with miniature hair
Motor electrically connects, and the pressure sensor and fine setting motor electrically connect with control system respectively.
Preferably, the adsorption plate is L-type charcoal absorption plate, and the L-type charcoal absorption plate is tilted to the right 45 °, altogether
3 row are installed, each column includes several L-type charcoal absorption plates, and equidistantly installation forms drainage channel, and adjacent each row L-type is lived
Property charcoal adsorption plate form drainage channel and mutually stagger, while increasing adsorption area, improve charcoal absorption utilization rate, and relatively
50% is reduced in traditional active carbon filler loss in head.
Preferably, the bottom plate in the first processing storehouse is downwardly convex arc-shaped, and the bottom plate bottom is provided with blowdown
Mouthful.
Preferably, it is characterised in that the flocculation tube top portion is provided with charge door.
Preferably, the isolating valve right end cap that automatically adjusts is provided with sealing ring with left end cap junction.
Preferably, the core left and right ends for automatically adjusting isolating valve are provided with sealing ring.
Preferably, multiple disturbance parts are provided with the disinfectant box, the disturbance part is that cross section is hexagon and individual side
For arc, the part that disturbs is along water (flow) direction stagger setting so that quick mixing, while curved surface hexagonal are realized in smaller space
The setting of shape destroys jet, can induce fluid and is flowed according to geometry, violent vortex is produced in mixed zone, accelerates sterilization
Liquid is evenly distributed in disinfect box, and to reach identical technique effect then needs 30 row hexgonal structures, or 50 row triangles
Shape structure, therefore, structure of the invention have reached unexpected technique effect.
Simple in construction in the present invention, flexible to operation, it is mutually wrong that L-type charcoal absorption plate is formed slopely drainage channel
Open, adsorption area is big, and adsorption efficiency is high, and small relative to traditional charcoal absorption filler loss in head, automatically adjusts isolation
Valve disclosure satisfy that own power and power demand, it is not necessary to is additionally provided power supply and energy, automatically adjusts isolating valve and pass through pressure
Sensor measures to pressure medium and isolating valve is accurately controlled by control system, can accurately adjust sewage disposal
Flow, so as to avoid frequently switching on draining pump, damage motor and reduce service life, when preventing that flow velocity is excessive, should intercept
The soft grid slag to get off washes away, and can also cause sewage outflow；Flow velocity is too small to be, the larger debris of particle diameter would be possible in sewage
Deposited before grid in the first processing storehouse, it is also possible to draining pump is in dry operating condition, damage equipment, disinfectant is adjusted according to automatic
The flow of section isolating valve control quantitatively conveys, and then the final purpose of wastewater efficient processing.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation that isolating valve is automatically adjusted in the present invention；
Fig. 3 is the side view that isolating valve is automatically adjusted in the present invention；
Fig. 4 is the core structural representation that isolating valve is automatically adjusted in the present invention；
In figure：First processing storehouse -1, second processing storehouse the -2, the 3rd handle storehouse -3, fourth process storehouse -4, water inlet -5, grid -6,
L-type charcoal absorption plate -7, bottom plate -8, sewage draining exit -9, flocculation pipe -10, charge door -11, micropore -12, disinfectant box -13, meter
Amount pump -14, disinfectant pipe -15, spray equipment -16, stabilier -17, regulation isolating valve -18, annex -1801, fine setting motor -
1802nd, protecting box -1803, drive link -1804, right end cap -1805, left end cap -1806, pressure sensor -1807, blowdown dress
Put -1808, microgenerator -1809, filter -1810, control system -1811, core -1812, formula of increasing income single-chip microcomputer -
1813rd, micro power -1814, draining pump -19, drainage channel -20, drainpipe -21, atomizer -22, disturbance part -23.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.
Reference picture 1-4, a kind of sewage treatment unit, including the first processing storehouse 1, second processing storehouse the 2, the 3rd handle storehouse
3 and fourth process storehouse 4, the top of the first processing storehouse 1 is provided with water inlet 5, and described first, which handles the top right side of storehouse 1, passes through grid
6 are connected with second processing storehouse 2, and the inside of second processing storehouse 2 is provided with L-type charcoal absorption plate 7, the L-type charcoal absorption
Plate 7 is tilted to the right 45 °, is provided with 3 row altogether, and each column forms draining including the equidistant installation of several L-type charcoal absorption plates 7 and led to
Road 20, and adjacent each row L-type charcoal absorption plate 7 forms drainage channel 20 and mutually staggered, adsorption area is big, and adsorption efficiency is high；
The bottom plate 8 in the first processing storehouse 1 is downwardly convex arc-shaped, and the bottom of bottom plate 8 is provided with sewage draining exit 9, described second
Handle the right side of storehouse 2 and storehouse 3 is handled by downward pipeline connection the 3rd, be provided with flocculation pipe 10 in the 3rd processing storehouse 3, flocculate pipe
10 tops are provided with charge door 11, and for supplementing flocculant, flocculation pipe 10 side wall is provided with some micropores 12 and flocculation pipe 10
Filled with flocculant, the right side connection fourth process storehouse 4 of the 3rd processing storehouse 3, the top of fourth process storehouse 4 is provided with sterilization dress
Put, the chlorination equipment includes disinfectant box 13, and disinfectant box 13 is stretched into fourth process storehouse 4 by disinfectant pipe 15, described
Disinfectant box 13 and the junction of disinfectant pipe 15 are provided with measuring pump 14, and the lower end of disinfectant pipe 15 is provided with spray equipment 16, institute
State the surface of spray equipment 16 and be uniformly provided with atomizer 22, the angle of the atomizer 22 and the inwall of spray equipment 16 is downward
15-75 ° of angle, make whole spray equipment that disinfectant to be formed to the state large area being atomized entirely and spray, it is fully efficient with sewage
Mixing, disturb part 23, each row's disturbance part 23 edge provided with the 3 each sides in row cross section for the hexagon of concave surface arc in disinfectant box 13
Water (flow) direction stagger setting, increase disturbance effect improve disinfection efficiency；The right side delivery port of fourth process storehouse 4 is provided with stabilier
17, drainpipe 21 is connected with the stabilier 17, the drainpipe 21 is provided with and automatically adjusts isolating valve 18, the drainpipe
21 right sides are provided with draining pump 19, and the isolating valve 18 that automatically adjusts includes annex 1801, control system 1811, fine setting motor
1802nd, protecting box 1803, drive link 1804, right end cap 1805, left end cap 1806, pressure sensor 1807, blowdown apparatus 1808,
Microgenerator 1809, filter 1810, the left end cap 1806 is connected to form to automatically adjust with right end cap 1805 isolates
The body of valve 18, the body interior are provided with core 1812, and the core 1812 is provided with groove, the lower end of drive link 1804
Connected by the groove in core 1812, the upper end of drive link 1804 stretches out body outer wall and is provided with gear structure, described
Fine setting motor 1802 is connected by gear with the upper end gear structure of drive link 1804, and the protecting box 1803 is arranged on above body
And cover fine setting motor 1802 and drive link 1804, the annex 1801 include inlet and outlet, the annex 1801 passes through peace
Dress hole is connected with control system 1811, and the control system 1811 includes increase income formula single-chip microcomputer 1813 and micro power 1814, institute
State blowdown apparatus 1808 to be arranged on below the entrance point of annex 1801 by the snap ring of the inwall of annex 1801, the filter 1810
It is arranged on by the snap ring of the inwall of annex 1801 inside the entrance point of annex 1801, the left end of the port of export of annex 1801 and valve body
The import of lid 1806 is connected, and the left end cap 1806 of the valve body is connected with pressure sensor 1807, the control system 1811 and pressure
Force snesor 1807 electrically connects with microgenerator 1809 respectively, the pressure sensor 1807 and fine setting motor 1802 respectively with
Control system 1811 electrically connects, and the left and right ends of right end cap 1805 and the junction of left end cap 1806 and core 1812 are mounted on close
Seal, make to automatically adjust the sealing effectiveness of isolating valve 18 more preferable.
Operation principle：The efficient domestic sewage processing unit is in use, sanitary sewage enters the first processing storehouse from water inlet 5
1, after grid filtration, sewage, which enters, carries out pollutant absorption in second processing storehouse 2, and sewage enters the 3rd processing storehouse 3 afterwards,
Flocculation pipe 10 discharges flocculant and pollutant is flocculated, by slightly solubility in the sewage and material of difficult degradation, bacterium and micro- life
Thing carries out the reaction of chemical property, carries out preliminary treatment to sewage, then sewage enters in fourth process storehouse 4, and measuring pump 14 is pressed
Carried out disinfection according to flow discharge disinfectant, the disturbance piece 23 in disinfectant box 13 is matched somebody with somebody with the full atomizing spray disinfectant of spray equipment
Close, increase disturbance effect improves disinfection efficiency, can be by excrement colibacillus group number 106-107Sanitary sewage disposably processing to 103With
Under, by sterilization, the sewage of discharge is reached 1 grade of A standard, need to circulate multiple sterilization compared to traditional disinfection mode, and disappear
Toxic agent dosage is big, and not only cost is high, but also can cause secondary pollution, and this disinfection way is more convenient, and single treatment can be straight
Run in and put, the debris that sewage draining exit 9 can be on periodic cleaning grid 6, outside last current are by the discharger of outlet pipe 16, after processing
Draining when passing through annex 1801, promote the rotation of microgenerator 1809, provide the energy to automatically adjust isolating valve 18, afterwards
Draining is filtered by the screen pack of filter 1810, filtered impurities carry out periodic cleaning by blowdown apparatus 1808,
When draining is by pressure sensor 1807 after filtering, pressure sensor 1807 measures discharge pressure, and signal is passed into control
Device, according to pressure sensor 1807 transmit come signal, control system 1811 to fine setting motor 1802 be controlled, control it is micro-
The rotation and stopping of motor 1802 are adjusted, drive link 1804 is by with finely tuning engaging for the gear of motor 1802, driving core 1812
Rotate.Core 1812 is changed after rotation by the draining cross-sectional area of core 1812, and then changes the uninterrupted of draining,
So as to control whole efficient domestic sewage processing unit flow, wastewater efficient processing entire run.
The use of isolating valve of the present invention can realize the stable operation of whole sewage disposal system, by being set by valve
Place pressure value be 5MPa, 10MPa and 15MPa experiment detected, isolating valve of the invention can effectively control pressure ±
Floated in the range of 100Pa, and other control valves such as conventional magnetic valve under equal test condition control pressure scope ±
0.01MPa scopes, it follows that the isolating valve of the present invention is higher than two quantity relative to general solenoid valve control pressure precision
Level, has reached unexpected technique effect.
Claims (6)
- A kind of 1. sewage treatment unit, it is characterised in that the processing unit include first processing storehouse, second processing storehouse, 3rd processing storehouse and fourth process storehouse, the first processing the top of the warehouse are provided with water inlet, led on the right side of the first processing the top of the warehouse Cross grid to be connected with second processing storehouse, be provided with adsorption plate inside the second processing storehouse, the second processing storehouse right side pass through to Under pipeline connection the 3rd processing storehouse, it is described 3rd processing storehouse in be provided with flocculation pipe, it is described flocculate pipe side wall be provided with some micropores And flocculant is filled with flocculation pipe, connection fourth process storehouse on the right side of the 3rd processing storehouse, the fourth process the top of the warehouse is set There is chlorination equipment, the chlorination equipment includes disinfectant box, and disinfectant box is stretched into fourth process storehouse by disinfectant pipe, described Disinfectant box and disinfectant pipe junction are provided with measuring pump, and the disinfectant pipe lower end is provided with spray equipment, the spray equipment Surface is uniformly provided with atomizer, the angle that the angle of the atomizer and spray equipment inwall is downward 15-75 °, described Multiple disturbance parts are provided with disinfectant box, the disturbance part cross section is hexagon and individual side is concave surface arc, the disturbance part Along water (flow) direction stagger setting, delivery port is provided with stabilier on the right side of the fourth process storehouse, and draining is connected with the stabilier Pipe, the drainpipe, which is provided with, automatically adjusts isolating valve, and draining pump is provided with the right side of the drainpipe, described to automatically adjust isolation Valve include annex, control system, fine setting motor, protecting box, drive link, right end cap, left end cap, pressure sensor, blowdown apparatus, Microgenerator, filter, the left end cap are connected to form the body for automatically adjusting isolating valve, the body with right end cap Inside is provided with core, and the core is provided with groove, and the drive link lower end is connected by the groove in core, the drive link Upper end stretches out body outer wall and is provided with gear, and the fine setting motor is connected by gear with drive link upper end, the protecting box Above body and cover fine setting motor and drive link, the annex include inlet and outlet, the annex passes through installation Hole is connected with control system, and the control system includes increase income single-chip microcomputer and micro power, and the blowdown apparatus passes through in annex The snap ring of wall is arranged on below annex entrance point, and the filter is arranged in annex entrance point by the snap ring of annex inwall Portion, the left end cap import connection of the annex port of export and valve body, the left end cap of the valve body is connected with pressure sensor, described Control system and pressure sensor respectively with micro generation mechatronics, the pressure sensor and fine setting motor respectively with control System electrically connects.
- 2. sewage treatment unit according to claim 1, it is characterised in that the adsorption plate is inhaled for L-type activated carbon Attached plate, the L-type charcoal absorption plate are tilted to the right 45 °, are provided with 3 row altogether, and each column includes several L-type charcoal absorption plates Equidistantly installation forms drainage channel, and adjacent each row L-type charcoal absorption plate shape mutually staggers into drainage channel.
- 3. according to the sewage treatment unit described in claim 1-2, it is characterised in that it is described first processing storehouse bottom plate be Downwardly convex arc-shaped, the bottom plate bottom are provided with sewage draining exit.
- 4. according to the sewage treatment unit described in claim 1-3, it is characterised in that the flocculation tube top portion is provided with charging Mouthful.
- 5. sewage treatment unit according to claim 1, it is characterised in that described to automatically adjust isolating valve right end cap Sealing ring is installed with left end cap junction.
- 6. according to the sewage treatment unit described in claim 1-4, it is characterised in that the ball for automatically adjusting isolating valve Core left and right ends are provided with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710948379.2A CN107487905A (en) | 2017-10-12 | 2017-10-12 | A kind of sewage treatment unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710948379.2A CN107487905A (en) | 2017-10-12 | 2017-10-12 | A kind of sewage treatment unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107487905A true CN107487905A (en) | 2017-12-19 |
Family
ID=60653719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710948379.2A Pending CN107487905A (en) | 2017-10-12 | 2017-10-12 | A kind of sewage treatment unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107487905A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110330139A (en) * | 2019-06-28 | 2019-10-15 | 滨海县渠南自来水有限公司 | A kind of waterworks water treatment system |
| CN110550826A (en) * | 2019-09-26 | 2019-12-10 | 湖南沃工环境科技有限公司 | Domestic sewage treatment recycles device |
| CN114853197A (en) * | 2022-05-30 | 2022-08-05 | 浙江崇德建设有限公司 | Environment-friendly building water supply and drainage system |
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| CN103332761A (en) * | 2013-06-26 | 2013-10-02 | 长江水利委员会长江科学院 | Sudden water pollution accident emergency treatment system |
| CN204755994U (en) * | 2015-06-25 | 2015-11-11 | 无锡开利阀业有限公司 | Plastic ball valve |
| CN205729094U (en) * | 2016-04-05 | 2016-11-30 | 陈明松 | A kind of brewing tea or the agitator of tea bag |
| CN206127004U (en) * | 2016-07-21 | 2017-04-26 | 杨序展 | Papermaking sewage treatment recovery unit |
-
2017
- 2017-10-12 CN CN201710948379.2A patent/CN107487905A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332761A (en) * | 2013-06-26 | 2013-10-02 | 长江水利委员会长江科学院 | Sudden water pollution accident emergency treatment system |
| CN204755994U (en) * | 2015-06-25 | 2015-11-11 | 无锡开利阀业有限公司 | Plastic ball valve |
| CN205729094U (en) * | 2016-04-05 | 2016-11-30 | 陈明松 | A kind of brewing tea or the agitator of tea bag |
| CN206127004U (en) * | 2016-07-21 | 2017-04-26 | 杨序展 | Papermaking sewage treatment recovery unit |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110330139A (en) * | 2019-06-28 | 2019-10-15 | 滨海县渠南自来水有限公司 | A kind of waterworks water treatment system |
| CN110550826A (en) * | 2019-09-26 | 2019-12-10 | 湖南沃工环境科技有限公司 | Domestic sewage treatment recycles device |
| CN114853197A (en) * | 2022-05-30 | 2022-08-05 | 浙江崇德建设有限公司 | Environment-friendly building water supply and drainage system |
| CN114853197B (en) * | 2022-05-30 | 2024-01-02 | 浙江崇德建设有限公司 | Environment-friendly building water supply and drainage system |
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Application publication date: 20171219 |
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| RJ01 | Rejection of invention patent application after publication |