CN113716724A - Wastewater treatment device and wastewater treatment method - Google Patents
Wastewater treatment device and wastewater treatment method Download PDFInfo
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- CN113716724A CN113716724A CN202111102089.9A CN202111102089A CN113716724A CN 113716724 A CN113716724 A CN 113716724A CN 202111102089 A CN202111102089 A CN 202111102089A CN 113716724 A CN113716724 A CN 113716724A
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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Abstract
The invention discloses a wastewater treatment device and a wastewater treatment method. A wastewater treatment device comprises a advection area, a sedimentation area and an air flotation area which are connected in sequence; a movable perforated tracery wall is arranged between the advection area and the sedimentation area; a first fixed perforated tracery wall is arranged between the settling zone and the air flotation zone. The invention also provides a method for treating wastewater by adopting the wastewater treatment device. The wastewater treatment device provided by the invention is integrally designed, has a compact structure and is convenient to operate, and when the wastewater treatment device is used for treating wastewater, the sludge precipitation speed is high, the precipitation efficiency is high, the cost is low, and the engineering application prospect is wide.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to a wastewater treatment device and a wastewater treatment method.
Background
With the advance of the urbanization process of China, the continuous expansion of cities and the gradual increase of the water consumption of urban residents, the original urban sewage treatment plant faces the problems of increased treatment load, process upgrading, equipment aging, overall relocation and the like, and the available land in cities and countryside is less and less facing the expansion of urban population. For town sewage plants, the treatment requirements of sewage, sludge, deodorization and the like are continuously improved, and the land occupation space of the town sewage plant is continuously reduced due to the fact that the treatment capacity in a planning long term and the requirement of upgrading and reconstruction are met on the existing land. In addition, the newly acquired places around the sewage plant are not only restricted by the environmental protection distance, but also have great difficulty in removal. Under the condition, sewage plant management enterprises are mostly required to perform construction tasks such as extension, bid upgrading and the like in the range of the original site, which undoubtedly brings pressure and difficulty to design, construction and operation. With the continuous improvement of sewage discharge standards, old sewage treatment plants in a plurality of cities cannot meet the sewage treatment requirements, which forces the urban sewage treatment plants to change into refined process and land saving.
The sedimentation unit is used as a main construction unit of a sewage treatment plant, occupies most of the land area, and has the problems of large amount of precipitated sludge, high sludge treatment cost and the like.
Disclosure of Invention
The invention aims to provide a wastewater treatment device and a wastewater treatment method in order to solve the problems of long process flow, large occupied area and high operation cost of the wastewater treatment and precipitation process in the prior art.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a wastewater treatment device comprises a advection area, a sedimentation area and an air flotation area which are connected in sequence; a movable perforated tracery wall is arranged between the advection area and the sedimentation area; a first fixed perforated tracery wall is arranged between the settling zone and the air flotation zone.
Preferably, the bottom of the wastewater treatment device is provided with a mud collecting hopper; the sludge collecting hopper is connected with a sludge discharge pipe, a sludge discharge valve is arranged on the sludge discharge pipe, and the sludge collecting hopper collects sludge precipitated in the wastewater treatment device and discharges the sludge through the sludge discharge pipe.
Preferably, in the wastewater treatment device, a second fixed perforated tracery wall is arranged inside the advection region; according to the water flow direction, the second fixed perforated tracery wall is arranged on the water inlet side.
Preferably, the water inlet side of the advection region of the wastewater treatment device is provided with a water inlet pipeline; and the wastewater passes through a water inlet pipeline at the water inlet side of the advection area and then passes through a second fixed perforated tracery wall at the water inlet side.
Preferably, in the wastewater treatment device, the interior of the settling zone is filled with a filler; further preferably, the filler is one of an inclined plate or an inclined pipe; still further preferably, the filler is an inclined plate filler; still further preferably, the packing is a lateral flow swash plate assembly; still more preferably, the filler is a side-flow inverted-V-shaped inclined plate assembly; specifically, the cross section of the lateral flow inverted V-shaped inclined plate is in a lateral flow inverted V shape, ethylene-propylene copolymer material is adopted, the thickness is 1.5-1.7mm, the two plates are combined at a certain angle, and the top angle between the two plates is adjustable; the lateral flow inverted V-shaped inclined plate component is formed by assembling a lateral flow inverted V-shaped inclined plate and a clamping piece through a standard module unit consisting of a slideway rod, a connecting piece and a connecting rod.
In some preferred embodiments of the present invention, the packing is a lateral flow inverted V-shaped inclined plate with an inclined length of 0.25m, and is a separate single plate supporting structure.
Preferably, the wastewater treatment device is provided with a back washing device inside the sedimentation zone, and the back washing device is used for washing the filling material.
Preferably, in the wastewater treatment device, a first sludge concentration monitor is arranged inside the sedimentation zone; according to the water flowing direction, a first sludge concentration monitor is arranged on the water inlet side of the settling zone; the wastewater enters a settling zone through a movable perforated tracery wall and then passes through a filler in the settling zone; according to the water flowing direction, the first sludge concentration monitor is arranged between the movable perforated tracery wall and the filler in the settling zone.
Preferably, in the wastewater treatment device, a second sludge concentration monitor is arranged inside the sedimentation zone; according to the water flowing direction, the second sludge concentration monitor is arranged on the water outlet side in the sedimentation zone; after the wastewater passes through the filler in the settling zone, the wastewater is discharged out of the settling zone through a first fixed perforated tracery wall and enters an air flotation zone; according to the water flowing direction, the second sludge concentration monitor is arranged between the filler and the first fixed perforated tracery wall in the settling zone.
Preferably, in the wastewater treatment device, an air flotation contact area and an air flotation separation area are sequentially arranged from the water inlet part to the water outlet part in the air flotation area; further preferably, a partition plate is arranged between the air flotation contact area and the air flotation separation area.
Further preferably, the wastewater treatment apparatus is provided with a partition plate in the separation zone of the air flotation zone.
Preferably, the wastewater treatment device, the air flotation zone also comprises a dissolved air tank; preferably, the dissolved air tank is connected with an air compressor and a reflux pump; the air compressor provides the compressed air that satisfies the demands to dissolving in the gas pitcher, and the backwash pump provides the water that satisfies the demands to dissolving in the gas pitcher, and compressed air and water form pressure in dissolving the gas pitcher and dissolve the gas.
Preferably, the top of the air flotation zone of the wastewater treatment device is provided with a slag scraper.
Preferably, in the wastewater treatment device, a slag discharge groove is arranged on the water outlet side of the air flotation zone; scum is scraped to a scum discharge groove by a mud scraper at the top of the air flotation area, and the scum discharge groove is externally connected with a scum discharge pipe for discharge.
Preferably, in the wastewater treatment device, a dissolved air releaser is arranged in the air flotation contact area and connected with a dissolved air tank, and the dissolved air tank provides pressure dissolved air for the air flotation contact area through the dissolved air releaser.
Preferably, the water collecting pipe is arranged on the water outlet side of the air flotation zone; and collecting the wastewater treated in the air floatation separation zone through a water collecting pipe and then discharging.
Preferably, in the wastewater treatment device, a return pipe is arranged between the water outlet side of the air flotation zone and the dissolved gas tank, and part of the water outlet of the air flotation zone is connected with the return pump through the return pipe and enters the dissolved gas tank.
The invention also provides a method for treating wastewater by adopting the wastewater treatment device, which comprises the following steps:
the wastewater enters a advection area to be subjected to primary precipitation;
the wastewater enters a settling zone through a movable perforated tracery wall to carry out secondary settling;
and the wastewater enters an air floatation area through the first fixed perforated wall, is subjected to air floatation precipitation and is discharged.
Preferably, in the wastewater treatment method, the wastewater quality satisfies at least one of the following conditions: COD is more than or equal to 25 mg/L; BOD5Not less than 5 mg/L; MLSS is more than or equal to 2000 mg/L; further excellenceOptionally, the wastewater quality meets at least one of the following conditions: COD is 25-5000 mg/L; BOD55-2000 mg/L; MLSS is 2000-5000 mg/L.
Preferably, in the wastewater treatment method, the water quality of the wastewater meets MLSS (MLSS) more than or equal to 2000 mg/L; further preferably, the water quality of the wastewater meets MLSS more than or equal to 2500 mg/L; still further preferably, the water quality of the wastewater meets MLSS more than or equal to 2800 mg/L; more preferably, the MLSS in the water quality of the inlet water wastewater is 3000-4000 mg/L.
Preferably, in the wastewater treatment method, the HRT of the horizontal flow area is 0.2-0.4 h; further preferably, the HRT of the horizontal flow area is 0.25-0.35 h; still further preferably, the HRT of the advection region is 0.3 h.
Preferably, in the wastewater treatment method, the surface load q of the horizontal flow zone is 8-15m3/m2H; it is further preferred that the surface load q in the advection region is from 9 to 13m3/m2H; even more preferably, the surface load q in the advection region is 10.8m3/m2.h。
Preferably, in the wastewater treatment method, sludge obtained by primary precipitation in the horizontal flow zone is discharged, and the discharged sludge amount is 10-60% of the water inflow in the horizontal flow zone; further preferably, the discharged sludge amount is 15-55% of the water inflow of the advection region; still further preferably, the discharged sludge amount is 20-50% of the water inflow of the advection region.
Preferably, in the wastewater treatment method, when the precipitation efficiency of the advection area is more than or equal to 65 percent, the position of the movable perforated tracery wall is fixed; further preferably, when the precipitation efficiency of the advection area is more than or equal to 70 percent, the position of the movable perforated tracery wall is fixed; still further preferably, when the precipitation efficiency of the advection area is more than or equal to 75 percent, the position of the movable perforated tracery wall is fixed.
Preferably, in the wastewater treatment method, the HRT of the precipitation zone is 0.4-0.6 h; further preferably, the HRT of the precipitation zone is 0.45-0.55 h; still further preferably, the HRT in the precipitation zone is 0.5 h.
Preferably, in the wastewater treatment method, when the precipitation efficiency of the precipitation zone is less than 95%, the filler in the precipitation zone is subjected to back flushing.
Preferably, in the wastewater treatment method, the HRT of the air flotation zone is 10-30 min; further preferably, the HRT of the air flotation zone is 15-25 min; still more preferably, the HRT of the air flotation zone is 20 min.
Preferably, in the wastewater treatment method, a dissolved air releaser is arranged in the air flotation contact zone, and the air release amount of the dissolved air releaser is 30-50 ml/L; further preferably, the gas release amount of the dissolved gas releaser is 35-45 ml/L; still more preferably, the gas release amount of the dissolved gas releaser is 40 ml/L.
The invention has the beneficial effects that:
the wastewater treatment device provided by the invention is integrally designed, has a compact structure and is convenient to operate, and when the wastewater treatment device is used for treating wastewater, the sludge precipitation speed is high, the precipitation efficiency is high, the cost is low, and the engineering application prospect is wide.
The invention innovatively provides that a movable perforated tracery wall is arranged between the advection area and the sedimentation area, the timely adjustment of water quality along with sludge concentration can be realized through a PLC control platform under the condition of ensuring uniform water distribution, the position of the perforated tracery wall between the advection area and the sedimentation area is controlled through the feedback of a PLC system according to the change of the sludge concentration in the effluent of each unit through the real-time monitoring of the sludge concentration in the effluent of the advection area and the sedimentation area, and the sewage with different sludge concentrations is responded in a mode of adjusting the hydraulic retention time of each unit, so that the efficient sludge precipitation removal effect and the flexible control of the whole device are obtained.
The invention establishes a relatively complete method for efficiently and quickly precipitating the urban sewage, and can quickly realize the efficient precipitation of the urban domestic sewage quality through the advection precipitation coupling inclined plate precipitation and air floatation process.
According to the invention, the lateral flow inverted V-shaped inclined plate assembly is innovatively adopted in the sedimentation zone, the inclined plates and the load are supported on the vertical support structure through the frame structure, the situations that the traditional lateral flow inclined plates are mutually extruded and integrally collapsed are avoided, and the sedimentation efficiency and the impact resistance are further improved.
Compared with the conventional precipitation process, the method saves more land occupation, is more accurate and optimized, and is easy to operate.
The invention adopts a whole-course automatic control module for operation, is simple and easy to control, and has important reference value for engineering application.
Drawings
FIG. 1 is a diagram of a wastewater treatment apparatus.
Reference numeral 1:
100-advection area, 110-second fixed perforated tracery wall, 200-sedimentation area, 210-filler, 220-first sludge concentration monitor, 230-second sludge concentration monitor, 300-air floatation area, 310-air floatation contact area, 320-dissolved air releaser, 330-air floatation separation area, 340-dissolved air tank, 350-slag scraper, 400-movable perforated tracery wall, 500-first fixed perforated tracery wall and 600-sludge collecting hopper.
Detailed Description
The embodiments of the present invention will be described in detail below, and the embodiments described by referring to the drawings are exemplary only for the purpose of illustrating the present invention and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and simplicity in description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be directly connected to each other, indirectly connected to each other through an intermediate member, or connected to each other through the inside of two members. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The starting materials or the apparatus used in the examples are, unless otherwise specified, either conventionally commercially available or may be obtained by methods known in the art.
As shown in FIG. 1, a wastewater treatment apparatus includes a advection zone 100, a settling zone 200, an air-flotation zone 300, a movable perforated tracery 400, and a first fixed perforated tracery 500.
An apparatus for treating wastewater according to an embodiment of the present invention will be described with reference to fig. 1.
As shown in FIG. 1, the wastewater treatment apparatus according to the embodiment of the present invention includes a advection area 100, a settling area 200, an air-flotation area 300, a movable perforated tracery wall 400, a first fixed perforated tracery wall 500, and a mud collection bucket 600.
In the wastewater treatment apparatus according to the embodiment of the present invention, the horizontal flow area 100 includes a second fixed perforated tracery wall 110.
In the wastewater treatment apparatus according to the embodiment of the present invention, the settling zone 200 includes a filler 210, a first sludge concentration monitor 220, and a second sludge concentration monitor 230.
In the wastewater treatment apparatus according to the embodiment of the present invention, the air flotation region 300 includes an air flotation contact region 310, a dissolved air releaser 320, an air flotation separation region 330, a dissolved air tank 340, and a slag scraper 350.
When the wastewater treatment device is applied to treat wastewater, the wastewater enters the advection area 100 for preliminary sedimentation, firstly passes through the second fixed perforated tracery wall 110, and then enters the sedimentation area 200 through the movable perforated tracery wall 400; the first sludge concentration monitor 220 in the settling zone 200 detects the MLSS concentration of the water inlet part, and moves the movable perforated tracery wall 400 according to the MLSS concentration; the wastewater enters a filler 210 after entering a settling zone 200, the filler is a lateral flow inverted V-shaped inclined plate component, a second sludge concentration monitor 230 in the settling zone 200 detects the MLSS concentration of a water outlet part, and the inclined plate component is washed according to the MLSS concentration; the wastewater enters an air flotation zone 300 after passing through a settling zone 200, and firstly enters the air flotation contact zone 310, the air flotation contact zone 310 is separated from an air flotation separation zone 330 by a partition plate, the wastewater enters the air flotation contact zone 310, a dissolved air releaser 320 is arranged in the air flotation contact zone 310, the dissolved air releaser 320 is connected with a dissolved air tank 340, dissolved air in the dissolved air tank 340 releases dissolved air through the dissolved air releaser 320, the aerated wastewater enters the air flotation separation zone 330, and floc in the wastewater floats upwards under the action of bubbles and is scraped out by a residue scraper 350 at the top of the equipment and discharged outside; the water outlet end in the air flotation separation zone 330 is provided with a water collecting pipe, the wastewater in the air flotation separation zone 330 is collected by the water collecting pipe and then discharged, one side of the water collecting pipe is provided with a return pipe, and the water discharged from the water collecting pipe is connected with a return pump through the return pipe and then enters the dissolved air tank 340 after being pressurized and dissolved air; the bottom of the wastewater treatment device is provided with a sludge collecting hopper 600, silt precipitated in the advection area 100, the sedimentation area 200 and the air flotation area 300 enters the sludge collecting hopper 600, the sludge collecting hopper 600 is connected with a sludge discharge pipe, the sludge discharge pipe is provided with a sludge discharge valve, and the sludge collecting hopper 600 collects sludge, gravel and the like precipitated in the wastewater treatment device and discharges the sludge, gravel and the like through the sludge discharge pipe.
Example 1
The effluent of the biochemical section of a sewage plant in a certain city of Guangzhou city is selected as the influent of the wastewater treatment device, and the main water quality indexes are as follows: the water inlet quantity Q is 1000m3/d、COD：30-50mg/L、BOD5: 8-15mg/L, MLSS: 3000-4000mg/L, pH of 6.9-7.1, the wastewater passes through the wastewater treatment plant shown in FIG. 1.
(1) Treating a advection area: when in operation, the effluent of the biochemical section of the urban sewage plant firstly enters the advection area through the water inlet pump, the advection area flows into the pool body through the water inlet channel and the water inlet perforated wall which are uniformly distributed, the water flow is uniformly distributed on the cross section of the whole pool width, the sludge concentration MLSS entering the advection area is 3000-4000mg/L, the HRT of the sewage in the advection area is 0.3h, and the q surface load is 10.8m3/m2H, measuring the effluent sludge concentration value of the horizontal flow region in real time through the sewage in the settling region by a first sludge concentration monitor, and keeping the position of the movable perforated tracery wall unchanged when the settling efficiency of the horizontal flow region reaches more than 75%; when the sedimentation efficiency of the advection area does not reach 75 percent, the driving controller controls the movable perforated tracery wall to move backwards, the hydraulic retention time HRT of the advection area is increased, when the sedimentation efficiency of the advection area reaches more than 75 percent, namely the effluent sludge concentration MLSS of the advection area is less than or equal to 750-1000mg/L, the driving controller is controlled to stop moving the perforated tracery wall. Adjusting sewage to enter a settling zone, simultaneously, collecting partial settled sludge in the advection zone through a sludge collecting hopper and then discharging the sludge, wherein the discharged sludge amount is 20-50% of the water inlet flow.
(2) And (3) treatment in a precipitation zone: the effluent water of the advection region enters a sedimentation region through a movable perforated tracery wall for mud-water separationFlow Q from, into, the settling zone2＝500m3About/d, the sludge concentration MLSS is 750-1000mg/L, and the HRT of the sewage in the settling zone is about 0.5 h. Laying a certain number of inclined plates according to the precipitation effect, wherein the inclined plates adopt lateral flow inverted V-shaped inclined plates, the water flow direction is vertical to the settlement direction of alum blossom particles, the mud and water separation is favorable for particle settlement, the inclined plates with the inclined length of 0.25m are adopted, the falling channel of settled mud particles is shortened, an independent single plate supporting structure is adopted, and the lateral flow inverted V-shaped inclined plates are assembled by the lateral flow inverted V-shaped inclined plates and the clamping pieces through standard module units consisting of slide way rods, connecting pieces and connecting rods. The slideway rod and the connecting rod are made of food-grade glass fiber reinforced plastic profiles and adopt standard connecting pieces. The cross section of the lateral flow inverted V-shaped inclined plate is in a lateral flow inverted V shape, ethylene propylene copolymer material is adopted, the thickness is 1.5-1.7mm, the two plates are combined at a certain angle, and the top angle between the two plates is adjustable. When the precipitation efficiency in the precipitation zone reaches more than 95%, the sewage in the precipitation zone is normally precipitated to obtain water; when the precipitation efficiency in the precipitation zone is less than 95%, the back washing device is controlled to perform high-pressure water washing on the inclined pipe.
(3) Treating in an air flotation zone: the sewage after passing through the settling zone enters an air flotation zone to carry out air flotation process to realize solid-liquid separation of mud and water, and the water quantity of the pressurized dissolved air water is controlled to be 5m by adopting a backflow pressurized dissolved air flotation process3And h, the reflux ratio a is 20%, a TS type dissolved gas releaser is adopted, the gas release amount is 40ml/L, the rated gas amount of an air compressor is controlled at 5.6L/min, the hydraulic retention time of an air floatation region is about 20min, flocs float up under the action of bubbles and are scraped out by a slag scraper at the top and discharged out through a sludge discharge pipeline, heavy objects such as gravel are sunk into a sludge collecting hopper at the bottom of the equipment, and clear water in the equipment is discharged out through a water outlet after being collected by a water collecting pipe.
According to the specific implementation steps, after the whole set of treatment system is debugged and operated for 3 months, the effluent quality is basically stable; after the treatment by the device, the concentration of the sludge in the effluent is obviously reduced, the SS of the suspended substance in the effluent is less than 5mg/L, and the SS of the suspended substance in the effluent quality meets the index requirement of the effluent suspended substance SS being less than or equal to 10mg/L in the first-class A standard requirement of pollutant discharge Standard of municipal wastewater treatment plant (GB 18918-2002).
Although the present invention has been described with reference to the above embodiments, it should be understood that the present invention is not limited thereto, and various changes, substitutions, and alterations can be made without departing from the spirit and scope of the invention.
Claims (10)
1. A wastewater treatment device is characterized by comprising a advection area, a sedimentation area and an air flotation area which are connected in sequence;
a movable perforated tracery wall is arranged between the advection area and the sedimentation area;
a first fixed perforated tracery wall is arranged between the settling zone and the air flotation zone.
2. The wastewater treatment plant according to claim 1, wherein a second fixed perforated wall is provided inside said advection zone.
3. The wastewater treatment plant according to claim 1, characterized in that the interior of said settling zone is filled with a filler.
4. The wastewater treatment plant according to claim 3, characterized in that a first sludge concentration monitor is arranged in the sedimentation zone; according to the water flowing direction, the first sludge concentration monitor is arranged on the water inlet side of the settling zone.
5. The wastewater treatment plant according to claim 3, characterized in that a second sludge concentration monitor is arranged in the sedimentation zone; and according to the water flowing direction, the second sludge concentration monitor is arranged on the water outlet side of the settling zone.
6. The apparatus of claim 1, wherein the air flotation zone comprises an air flotation contact zone and an air flotation separation zone in sequence from the water inlet portion to the water outlet portion.
7. A method for treating wastewater by using the wastewater treatment apparatus according to any one of claims 1 to 6, comprising the steps of:
the wastewater enters a advection area to be subjected to primary precipitation;
the wastewater enters a settling zone through a movable perforated tracery wall to carry out secondary settling;
and the wastewater enters an air floatation area through the first fixed perforated wall, is subjected to air floatation precipitation and is discharged.
8. A method as claimed in claim 7, wherein the quality of the wastewater satisfies at least one of the following conditions: COD is more than or equal to 25 mg/L; BOD5≥5mg/L；MLSS≥2000mg/L。
9. The wastewater treatment method according to claim 7, wherein the HRT of the horizontal flow region is 0.2-0.4 h.
10. A process for the treatment of waste water according to claim 7, wherein the HRT in the settling zone is between 0.4 and 0.6 h.
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| CN202111102089.9A CN113716724A (en) | 2021-09-18 | 2021-09-18 | Wastewater treatment device and wastewater treatment method |
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| CN202111102089.9A CN113716724A (en) | 2021-09-18 | 2021-09-18 | Wastewater treatment device and wastewater treatment method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115745293A (en) * | 2022-11-29 | 2023-03-07 | 华夏碧水环保科技股份有限公司 | Catalytic reduction dechlorination device containing load type PVDF membrane |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202011109618U1 (en) * | 2011-12-28 | 2012-01-30 | Ingolf Kurtze | Flow optimization for settling tanks of wash water circulation systems |
| CN210710975U (en) * | 2019-05-22 | 2020-06-09 | 陈才高 | Sloping plate-air flotation mud-water separation tank |
-
2021
- 2021-09-18 CN CN202111102089.9A patent/CN113716724A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202011109618U1 (en) * | 2011-12-28 | 2012-01-30 | Ingolf Kurtze | Flow optimization for settling tanks of wash water circulation systems |
| CN210710975U (en) * | 2019-05-22 | 2020-06-09 | 陈才高 | Sloping plate-air flotation mud-water separation tank |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115745293A (en) * | 2022-11-29 | 2023-03-07 | 华夏碧水环保科技股份有限公司 | Catalytic reduction dechlorination device containing load type PVDF membrane |
| CN115745293B (en) * | 2022-11-29 | 2023-07-21 | 华夏碧水环保科技股份有限公司 | Catalytic reduction dechlorination device containing load type PVDF membrane |
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