CN111573829A - Ecological gravel bed aeration and back flush water distribution and gas distribution combined system - Google Patents
Ecological gravel bed aeration and back flush water distribution and gas distribution combined system Download PDFInfo
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- CN111573829A CN111573829A CN202010436272.1A CN202010436272A CN111573829A CN 111573829 A CN111573829 A CN 111573829A CN 202010436272 A CN202010436272 A CN 202010436272A CN 111573829 A CN111573829 A CN 111573829A
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
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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
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
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- Biological Treatment Of Waste Water (AREA)
Abstract
An ecological gravel bed aeration and back flush water and gas distribution combined system comprises: the device comprises an ecological gravel bed, water and gas distribution filter bricks, a backwashing water distribution box and a backwashing water inlet cavity, wherein the water and gas distribution filter bricks are connected with the bottom of the ecological gravel bed, one side of each water and gas distribution filter brick is connected with the backwashing water distribution box, the other side of each water and gas distribution filter brick is plugged, the backwashing water distribution box is connected with the bottom of a vertical wall of the ecological gravel bed, and the backwashing water inlet cavity is connected with a partition wall of the backwashing water distribution box through a hole. Wherein, water distribution gas distribution filter brick includes: the device comprises a filter brick structure, an aeration and back-flushing air source distribution pipe, a flow-passing hole, a back-flushing water drainage channel and a back-flushing water outlet pipe. Compared with the prior art, the invention reduces the problems of complex pipeline inside the bed body and difficult design, construction and installation, ensures that aeration and backwashing water and gas distribution are more uniform, the investment is more saved, the pollutant removal effect is better, the backwashing effect is better, and the risk of blockage of the ecological gravel bed is reduced.
Description
Technical Field
The invention relates to an ecological gravel bed technology in a river treatment technology, in particular to an aeration and backwashing water and gas distribution combined system for an ecological gravel bed.
Background
The method is improved and opened, and along with the continuous and high-speed development of economy in China, a plurality of river channels are seriously polluted to become 'black and odorous river channels'. According to relevant statistics, more than 80% of urban river channels in China are polluted, and seasonal and even perennial black and odorous phenomena appear in many river channels. In 2015, a water pollution prevention and control action plan (abbreviated as 'ten pieces of water') issued by a state institute provides a clear target for water quality control of rivers and lakes, and black and odorous water bodies in established areas of the cities of grade and above are controlled within 10% in 2020 and are totally eliminated in 2030.
As an inter-gravel contact oxidation technology, the ecological gravel bed technology can further treat river water with low pollutant content to improve water quality, meanwhile, the ecological gravel bed can be constructed according to the on-site situation in-situ or ex-situ treatment and is combined with landscape, the ecological gravel bed technology also has the function of beautifying the landscape while carrying out water treatment, and the ecological gravel bed technology has good requirements in river and lake basin treatment projects.
The ecological gravel bed technology is a mode for rapidly treating sewage, and the removal of pollutants is mainly realized through multiple actions of contact precipitation, adsorption, biodegradation and the like. Organic substances in water contact with the gravel surface, and due to the electrification of the gravel surface, the organic substances in the water are adsorbed to a biofilm on the gravel surface, and microorganisms or algae growing on the gravel surface decompose and oxidize the adsorbed pollutants. The removal of the pollutants by microorganisms needs to be carried out in an aerobic environment, and when the concentration of dissolved oxygen in river water is not enough to remove the pollutants to a target value, the ecological gravel bed needs to be aerated, so that a set of aeration system is needed in the bed body. The ecological gravel bed has small pores among the fillers and short settling distance, continuous water flow channels are formed among the gravels, when sewage passes through the ecological gravel bed, suspended solid in the water moves to the surface of the gravels due to precipitation, physical interception, hydrodynamic force and the like to contact with the surface of the gravels and precipitate, so that the gaps of the ecological gravel bed are gradually reduced, the filtration resistance is gradually increased, the ecological gravel bed has the risk of blockage, the fillers of the ecological gravel bed need to be cleaned, and the existing mature method of backwashing is air-water combined backwashing and needs a set of backwashing water distribution pipeline system and a set of backwashing gas distribution pipeline system. The pipeline system in the ecological gravel bed body is complex, and the water distribution and gas distribution are difficult to ensure even except for high manufacturing cost, difficult installation and high maintenance cost, so that the development of an aeration and backwashing combined system with simple construction, low manufacturing cost and reliable performance is urgently needed.
In order to solve the above problems, we have made a series of improvements.
Disclosure of Invention
The invention aims to provide a system for combining aeration with backwashing water distribution and gas distribution of an ecological gravel bed, so as to overcome the defects of the prior art.
An ecological gravel bed aeration and back flush water and gas distribution combined system comprises: the device comprises an ecological gravel bed, water and gas distribution filter bricks, a backwashing water distribution box and a backwashing water inlet cavity, wherein the water and gas distribution filter bricks are connected with the bottom of the ecological gravel bed, one side of each water and gas distribution filter brick is connected with the backwashing water distribution box, the other side of each water and gas distribution filter brick is plugged, the backwashing water distribution box is connected with the bottom of a vertical wall of the ecological gravel bed, and the backwashing water inlet cavity is connected with a partition wall of the backwashing water distribution box through a hole;
wherein, water distribution gas distribution filter brick includes: the filter brick structure is arranged in the ecological gravel bed, the aeration and backwashing air source distribution pipe is connected with the filter brick structure, the overflowing hole is connected with the top of the backwashing water drainage channel, the backwashing water drainage channel is located in the middle of the groove body of the ecological gravel bed, and the backwashing water outlet pipe is connected with the end of the backwashing water drainage channel.
Furthermore, the ecological gravel bed is provided with a water inlet, a water outlet and a water distribution tracery wall, the water inlet is connected with one side of the ecological gravel bed through the water distribution tracery wall, and the water outlet is connected with the other side of the ecological gravel bed through the water distribution tracery wall.
Further, the backwash water inlet chamber includes: the backwashing water distributor comprises a water inlet cavity, a backwashing water inlet pipe and holes, wherein the backwashing water inlet pipe is connected with the water inlet cavity, and the water inlet cavity is connected with a backwashing water distribution box through the holes.
The invention has the beneficial effects that:
compared with the prior art, the invention replaces the complex current situation of three sets of pipeline systems of an aeration pipeline system, a backwashing gas distribution system and a backwashing water distribution system in the traditional ecological gravel bed by additionally arranging the ecological gravel bed aeration and backwashing combined system, realizes that aeration, backwashing water distribution and gas distribution are more uniform, ensures that the installation is more convenient, the investment is more saved, the pollutant removal effect is better, the backwashing effect is more excellent, and reduces the risk of blockage of the ecological gravel bed.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of a longitudinal cross section of the present invention.
Fig. 3 is a schematic view in transverse cross-section of the present invention.
Reference numerals:
an ecological gravel bed 100, a water inlet 110, a water outlet 120 and a water distribution flower wall 130.
Water and gas distribution filter bricks 200, a filter brick structure 210, an aeration and backwashing gas source distribution pipe 220, an overflow hole 230, a backwashing water drainage channel 240 and a backwashing water outlet pipe 250.
A backwash water distribution box 300, a backwash water inlet chamber 400, an inlet chamber body 410, a backwash water inlet pipe 420 and a hole 430.
Detailed Description
The present invention will be further described with reference to the following examples. It should be understood that the following examples are illustrative only and are not intended to limit the scope of the present invention.
Example 1
FIG. 1 is a schematic structural diagram of the present invention. Fig. 2 is a schematic view of a longitudinal cross section of the present invention. Fig. 3 is a schematic view in transverse cross-section of the present invention.
As shown in fig. 1 to 3, an ecological gravel bed aeration and backwash water and gas distribution combined system comprises: the ecological gravel bed 100, the water and gas distribution filter bricks 200, the backwashing water distribution box 300 and the backwashing water inlet cavity 400, wherein the water and gas distribution filter bricks 200 are connected with the bottom of the ecological gravel bed 100, one side of the water and gas distribution filter bricks 200 is connected with the backwashing water distribution box 300, the other side of the water and gas distribution filter bricks 200 is blocked, the backwashing water distribution box 300 is connected with the bottom of a vertical wall of the ecological gravel bed 100, and the backwashing water inlet cavity 400 is connected with a partition wall of the backwashing water distribution box 300 through a hole;
wherein, water and gas distribution filter brick 200 includes: the ecological gravel bed comprises a filter brick structure 210, an aeration and backwashing air source distribution pipe 220, an overflowing hole 230, a backwashing water drainage channel 240 and a backwashing water outlet pipe 250, wherein the filter brick structure 210 is arranged in the ecological gravel bed 100, the aeration and backwashing air source distribution pipe 220 is connected with the filter brick structure 210, the overflowing hole 230 is connected with the top of the backwashing water drainage channel 240, the backwashing water drainage channel 240 is positioned in the middle of a groove body of the ecological gravel bed 100, and the backwashing water outlet pipe 250 is connected with the end of the backwashing water drainage channel 240.
The ecological gravel bed 100 is provided with a water inlet 110, a water outlet 120 and a water distribution flower wall 130, the water inlet 110 is connected with one side of the ecological gravel bed 100 through the water distribution flower wall 130, and the water outlet 120 is connected with the other side of the ecological gravel bed 100 through the water distribution flower wall 130.
The backwash water inlet chamber 400 includes: the backwashing water distribution box comprises a water inlet cavity body 410, a backwashing water inlet pipe 420 and a hole 430, wherein the backwashing water inlet pipe 420 is connected with the water inlet cavity body 410, and the water inlet cavity body 410 is connected with the backwashing water distribution box 300 through the hole 430.
The working principle of the invention is that the water and gas distribution filter bricks 200 are arranged at the bottom of the ecological gravel bed 100 to play the roles of supporting filter materials, aerating and backwashing water and gas distribution, and are used for aerating under the normal operation condition, when the ecological gravel bed 100 needs backwashing, the water and gas distribution filter bricks 200 play the roles of backwashing water and gas distribution to ensure the uniformity of backwashing water and gas distribution, backwashing water enters a backwashing water inlet cavity 400 through a backwashing water inlet pipe 420, the water inlet cavity 410 primarily distributes backwashing water, the water inlet cavity 410 is connected with backwashing water distribution boxes 300 through holes 430, each backwashing water distribution box 300 corresponds to one hole 430, backwashing water enters the backwashing water distribution box 300 through the holes 430, the backwashing water distribution boxes 300 are made of stainless steel materials, the backwashing water distribution boxes 300 are fixed on the partition walls of the ecological gravel bed 100 to play the role of connecting the filter brick structures 210 with a concrete pool body, meanwhile, backwashing water is distributed into the filter bricks and then enters the filter brick structure 210 to be distributed into the ecological gravel bed 100, so that the filler of the ecological gravel bed 100 is fully cleaned, the ecological gravel bed 100 utilizes a PLC automatic control system to control the operation and backwashing of the ecological gravel bed 100, the opening of a valve of an aeration backwashing air source distribution pipe is adjusted during normal operation, the system performs an aeration function, the opening of the valve of the aeration backwashing air source distribution pipe is increased during backwashing, a backwashing water inlet device is opened, the gas production rate of the backwashing air source device is increased, and the system performs backwashing water and gas distribution functions. The invention replaces the complex current situation of three sets of pipeline systems of an aeration pipeline system, a backwashing gas distribution system and a backwashing water distribution system in the traditional ecological gravel bed by arranging the ecological gravel bed aeration and backwashing combined system, realizes that aeration and backwashing water distribution and gas distribution are more uniform, ensures that the installation is more convenient, the investment is more saved, the pollutant removal effect is better, the backwashing effect is more excellent, and reduces the risk of blockage of the ecological gravel bed.
While the present invention has been described with reference to the specific embodiments, the present invention is not limited thereto, and various changes may be made without departing from the spirit of the present invention.
Claims (3)
1. The utility model provides an ecological gravel bed aeration and back flush water distribution gas distribution allies oneself with system which characterized in that includes: the device comprises an ecological gravel bed (100), water and gas distribution filter bricks (200), a backwashing water distribution box (300) and a backwashing water inlet cavity (400), wherein the water and gas distribution filter bricks (200) are connected with the bottom of the ecological gravel bed (100), one side of the water and gas distribution filter bricks (200) is connected with the backwashing water distribution box (300), the other side of the water and gas distribution filter bricks (200) is blocked, the backwashing water distribution box (300) is connected with the bottom of a vertical wall of the ecological gravel bed (100), and the backwashing water inlet cavity (400) is connected with a partition wall of the backwashing water distribution box (300) through holes;
wherein the water and gas distributing filter brick (200) comprises: filter brick structure (210), aeration and back flush air supply distributing pipe (220), overflow hole (230), backwash water drainage canal (240) and backwash water outlet pipe (250), filter brick structure (210) are located in ecological gravel bed (100), aeration and backwash air supply distributing pipe (220) are connected with filter brick structure (210), overflow hole (230) and backwash water drainage canal (240) top are connected, backwash water drainage canal (240) are located in the middle of the cell body of ecological gravel bed (100), backwash water outlet pipe (250) and backwash water drainage canal (240) end-to-end connection.
2. The system for combined aeration, back-washing, water distribution and gas distribution of an ecological gravel bed as claimed in claim 1, wherein the ecological gravel bed (100) is provided with a water inlet (110), a water outlet (120) and a water distribution wall (130), the water inlet (110) is connected with one side of the ecological gravel bed (100) through the water distribution wall (130), and the water outlet (120) is connected with the other side of the ecological gravel bed (100) through the water distribution wall (130).
3. The combination system for aeration and backwashing water and gas distribution of the ecological gravel bed as claimed in claim 1, wherein the backwashing water inlet chamber (400) comprises: the backwashing water distributor comprises a water inlet cavity body (410), a backwashing water inlet pipe (420) and holes (430), wherein the backwashing water inlet pipe (420) is connected with the water inlet cavity body (410), and the water inlet cavity body (410) is connected with a backwashing water distribution box (300) through the holes (430).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010436272.1A CN111573829A (en) | 2020-05-21 | 2020-05-21 | Ecological gravel bed aeration and back flush water distribution and gas distribution combined system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010436272.1A CN111573829A (en) | 2020-05-21 | 2020-05-21 | Ecological gravel bed aeration and back flush water distribution and gas distribution combined system |
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| Publication Number | Publication Date |
|---|---|
| CN111573829A true CN111573829A (en) | 2020-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010436272.1A Pending CN111573829A (en) | 2020-05-21 | 2020-05-21 | Ecological gravel bed aeration and back flush water distribution and gas distribution combined system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070017867A1 (en) * | 2005-07-21 | 2007-01-25 | Pedros Philip B | Submerged attached growth bioreactor |
| CN205907080U (en) * | 2016-06-16 | 2017-01-25 | 信开水环境投资有限公司 | A ecological gravel bed system of multistage formula for declining pollute water deep purification |
| CN207659171U (en) * | 2017-10-27 | 2018-07-27 | 上海青川环境工程技术有限公司 | Flood biological aerated filter reaction system |
| CN110563133A (en) * | 2019-09-09 | 2019-12-13 | 宜兴博渝环保设备有限公司 | TAF biological filter and T-shaped air-water distribution block filter brick water and air distribution system thereof |
| CN210505745U (en) * | 2019-06-11 | 2020-05-12 | 上海奥德水处理科技有限公司 | Aeration system for denitrification deep bed filter |
-
2020
- 2020-05-21 CN CN202010436272.1A patent/CN111573829A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070017867A1 (en) * | 2005-07-21 | 2007-01-25 | Pedros Philip B | Submerged attached growth bioreactor |
| CN205907080U (en) * | 2016-06-16 | 2017-01-25 | 信开水环境投资有限公司 | A ecological gravel bed system of multistage formula for declining pollute water deep purification |
| CN207659171U (en) * | 2017-10-27 | 2018-07-27 | 上海青川环境工程技术有限公司 | Flood biological aerated filter reaction system |
| CN210505745U (en) * | 2019-06-11 | 2020-05-12 | 上海奥德水处理科技有限公司 | Aeration system for denitrification deep bed filter |
| CN110563133A (en) * | 2019-09-09 | 2019-12-13 | 宜兴博渝环保设备有限公司 | TAF biological filter and T-shaped air-water distribution block filter brick water and air distribution system thereof |
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Application publication date: 20200825 |