CN101245590A - Floating algae air curtain blocking technique - Google Patents
Floating algae air curtain blocking technique Download PDFInfo
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- CN101245590A CN101245590A CNA2008100244852A CN200810024485A CN101245590A CN 101245590 A CN101245590 A CN 101245590A CN A2008100244852 A CNA2008100244852 A CN A2008100244852A CN 200810024485 A CN200810024485 A CN 200810024485A CN 101245590 A CN101245590 A CN 101245590A
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Abstract
A technology of blocking the floating alga and similar floating contaminations in a water body by a gas curtain consists of a low pressure gas supply pipeline system, a pipe branch interface and a millipore aeration pipe branch and is arranged about 2m under the water to form a 'curtain' shaped gas-water flow in the water body by zonal aeration to cut off the wind-generated laminar flow of lake water so as to block the floating alga and the similar floating contaminations. The technology can build an invisible (obstacle-free) water body floating contamination blocking protection line used for the blocking, the stream guidance and the enrichment of the contaminations such as floating alga, etc. in an inland low flow speed water body and the construction scale of the technology can reach 10km; wherein, the running energy consumption is less than 20kw. The technology is not affected by wind, wave and ships with a service life of over 10 years.
Description
Affiliated technical field:
The water body environment engineering.The present invention relates to a kind of floating algae air curtain blocking technique, be applicable to the blocking of floatability blue-green algae and similar floating thing in the landlocked low flow rate water body (lake, reservoir), enrichment, have the function of protection target waters defence blue-green algae disaster.
Background technology:
The blue-green algae disaster that body eutrophication causes seriously jeopardizes many lakes, reservoir, its characteristics of causing disaster are " edge effects ", the mechanism of causing disaster be under the mild climate condition (blue-green algae of wind speed＜4m/s) is floating-due to moving-gathering, on the blue-green algae drift path, block and remove the generation that blue-green algae just can effectively prevent local waters blue-green algae disaster.In Taihu Lake, the more serious lake of eutrophication problem such as Chaohu, Dian Chi, various fences (enclosure) technology is used to the blue-green algae of blocking, its validity can be affirmed, limited its applicability but it blocks traffic, influences view, retardance current, influence negative effect strictness such as ecology, and destroyed by stormy waves at big lake surface upper railings (enclosure), construction and maintenance cost are higher, and reliability is poor.
Summary of the invention:
Target of the present invention is: the research and development floating algae air curtain blocking technique, a kind of invisible blue-green algae defence line is provided, and can effectively tackle the blue-green algae of floating migration, but do not cause any environment negative effect, and create clog-free operating environment for the blue algae collecting ship.The low pressure limited aeration that " air curtain blocking " is actually by special micropore aeration pipe under water forms vertical " air-water curtain " in water body, so as to cutting off the laminar flow humorously on the lake surface, the floatability blue-green algae is blocked in windward one side.In large-size lake, must solve following technical problem with the air curtain blocking floating algae.
◆ the scale problem, air curtain retaining algae defence line length requirement may be thousands of rice.
◆ validity problem, the system of aerated conduit under water that reaches thousands of rice, intermittent operation must prevent the lake water invasion.
◆ energy consumption problem, can limit the applicability of this technology if aeration energy consumption is too high.
For solving above technical problem and reaching the research and development target, taked following technical scheme.
(1) low pressure air supply system
Adopt the low pressure air supply system of heavy caliber, lower resistance, as shown in Figure 1.Approximately 2m of the height distance water surface (4) is laid to support (2) fixing air feed trunk line (3) of laying in the end along the lake (1); Build Ventilator Room (5) at air feed trunk line top, with the fan with low voltage about 30kpa (6) air feed; Establish " ∪ " shape guttation pipe (7) at air feed trunk line end.
(2) prop up interface tube
Prop up interface tube (8) with antirust material, be responsible for the 30m installation (seeing accompanying drawing 1) at interval of (3) top at air feed.Outlet is connected with aeration arm (9), and import is inserted air feed and is responsible for (3) bottom.Propping up interface tube also has counterseal (waterproof) and regulates traffic engineering capability.
(3) micro-pore aeration arm
The low pressure micro-pore aeration arm (9) of φ 20mm, length 30m, the micropore gross area 50～100mm
2, end sealing, the other end is installed on the interface tube (8), and it is fixing to be responsible for (3) along air feed.
(4) waterproof, draining mechanism
Air feed trunk line (3) and and interface tube (8) between tight waterproof, and in an interface tube (8) the handicapping return device, the air feed trunk line can not intake when short-term was inactive; " ∪ " shape pipe (7) of air feed trunk line end has the guttation function, and long-time stopping using can be discharged the interior ponding of air feed trunk line automatically when starting once more; Aeration arm (9) also possesses the guttation function, and the water that air feed trunk line (3) bottom is detained can enter aeration arm (9) from an interface tube (8) and discharge.
The present invention mainly contains following advantage:
(1) invisible blue-green algae defence line stops the drift of blue-green algae by banded aeration, does not influence water transportation, current and view, and provides accessible operating environment for the blue algae collecting ship;
(2) safe and reliable, durable in use, not influenced by stormy waves, ship, application life is more than 10 years;
(3) construction cost is reasonable, km air curtain retaining algae engineering construction cost＜1,000,000 yuan (adjusting with 10 km total lengths);
(4) the low pressure limited aeration is adopted in energy-conserving and environment-protective, km air curtain retaining algae engineering operation energy consumption＜20kw, and can arbitrarily open and close;
(5) waterproof, drainage performance are good, the fraction height.
Applicating example:
The present invention blue-green algae on probation in the Daqinghe River saliva matter purification technics demonstration project of Dian Chi, as can effectively to block and arrive in 2007 from the lake surface drift.
Description of drawings:
Fig. 1---air feed trunk line
Fig. 2---be installed in interface tube and aeration arm that air feed is responsible for
Among the figure: 1. lakebed, 2. support, 3. air feed trunk line, the 4. water surface, 5. Ventilator Room, 6. blower fan, 7. " ∪ " shape pipe, 8. an interface tube, 9. micro-pore aeration arm.
The specific embodiment:
The present invention carries out engineering according to following steps and uses:
(1) builds Ventilator Room (5) and blower fan (6) is installed.
(2) unwrapping wire and pipeline is set supports (2) on lakebed.
(3) the overall package air feed is responsible for (3) and terminal " ∪ " shape pipe (7) on the water surface, installs an interface tube (8) and closes control valve.
(4) air feed is responsible for (3) integral installation to supporting on (7) under water.
(5) micro-pore aeration arm (9) is installed.
(6) start blower fan (6), all interface tube (8) control valves of unlatching under the press strip spare are being arranged, and the adjustment throughput makes the whole system aeration even.
(7) close blower fan (6), can start operation once more at any time.
Claims (3)
- In the low flow rate water body in inland with the block technical thought of floating algae and similar floating thing of banded aeration.
- 2. by the low pressure limited aeration system that the heavy caliber air feed is responsible for, an interface tube, small-bore micro-pore aeration arm are formed, operating air pressure 30kpa during aeration depth of water 2m, and on the aeration band that 10km grows, realize uniform aeration.
- 3. overlength aeration pipeline waterproof, water discharge technology under water, comprising: air feed is responsible for terminal " ∪ " shape pipe guttation, an interface tube counterseal waterproof, the draining mechanism that an interface tube and aeration arm form (discharge self ponding and air feed are responsible for bottom ponding).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100244852A CN101245590A (en) | 2008-03-25 | 2008-03-25 | Floating algae air curtain blocking technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100244852A CN101245590A (en) | 2008-03-25 | 2008-03-25 | Floating algae air curtain blocking technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101245590A true CN101245590A (en) | 2008-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CNA2008100244852A Pending CN101245590A (en) | 2008-03-25 | 2008-03-25 | Floating algae air curtain blocking technique |
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| CN (1) | CN101245590A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101967814A (en) * | 2010-09-20 | 2011-02-09 | 中国科学院南京地理与湖泊研究所 | Aquatic air curtain intercepting method and device |
| CN104652388A (en) * | 2013-11-25 | 2015-05-27 | 浙江海洋学院 | Method and device for utilizing air curtain to achieve oil containment |
| CN112064568A (en) * | 2020-09-02 | 2020-12-11 | 中国科学院南京地理与湖泊研究所 | A water conservancy diversion gathering device that is used for low velocity of flow water body suspension blue alga |
-
2008
- 2008-03-25 CN CNA2008100244852A patent/CN101245590A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101967814A (en) * | 2010-09-20 | 2011-02-09 | 中国科学院南京地理与湖泊研究所 | Aquatic air curtain intercepting method and device |
| CN104652388A (en) * | 2013-11-25 | 2015-05-27 | 浙江海洋学院 | Method and device for utilizing air curtain to achieve oil containment |
| CN104652388B (en) * | 2013-11-25 | 2016-06-01 | 浙江海洋学院 | Gas curtain is utilized to enclose method and the device of oil |
| CN112064568A (en) * | 2020-09-02 | 2020-12-11 | 中国科学院南京地理与湖泊研究所 | A water conservancy diversion gathering device that is used for low velocity of flow water body suspension blue alga |
| CN112064568B (en) * | 2020-09-02 | 2021-10-29 | 中国科学院南京地理与湖泊研究所 | A water conservancy diversion gathering device that is used for low velocity of flow water body suspension blue alga |
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Open date: 20080820 |