CN113149380A - Riverway sediment in-situ remediation system - Google Patents
Riverway sediment in-situ remediation system Download PDFInfo
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- CN113149380A CN113149380A CN202110417000.1A CN202110417000A CN113149380A CN 113149380 A CN113149380 A CN 113149380A CN 202110417000 A CN202110417000 A CN 202110417000A CN 113149380 A CN113149380 A CN 113149380A
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- flexible structure
- fixing
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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
- C02F11/00—Treatment of sludge; Devices therefor
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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
- C02F2303/02—Odour removal or prevention of malodour
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a riverway sediment in-situ remediation system, which relates to the technical field of pollution remediation, and comprises: the flexible structure is covered on the riverbed; the fixing device comprises a first fixing structure and a second fixing structure, the first fixing structure is arranged along the water flow direction and fixedly connected with the flexible structure, and the second fixing structure embeds the starting end of the flexible structure in the river bottom; and the exhaust device is at least partially arranged below the flexible structure and is used for exhausting gas in the flexible structure. The flexible structure covers on the bed mud in river course, effectively prevents in the middle of the bed mud pollutant releases to the water, and the foul smell that the bed mud produced then concentrates the discharge through exhaust apparatus, has avoided the direct loss of foul smell to the air. The system has low construction cost, small influence on the structure of the riverbed and the storage capacity of the water body, convenient construction and field withdrawal and can be widely applied to the pollution remediation of the riverway.
Description
Technical Field
The invention relates to the technical field of pollution remediation, in particular to a riverway sediment in-situ remediation system.
Background
The bottom mud pollution treatment is generally to remove pollutants in the bottom mud of a river channel and improve the river water environment. The existing treatment technology of bottom mud pollution mainly comprises ex-situ treatment and in-situ remediation.
The main point of ectopic treatment is bottom sediment dredging, and common dredging methods comprise draining and dredging and underwater dredging. The quantity of the drainage and dredging engineering is large, the construction can be usually carried out only in the non-flood season, the construction period is limited to a certain extent, black and odorous bottom mud is exposed in the air and gives off peculiar smell, the construction efficiency is low, and negative social effects can be generated. The underwater dredging method requires a large operation space, is suitable for medium and large river channels with large mud layer thickness, and cannot flexibly operate in medium and small river channels in cities. The disturbance of the dredging method to the water body system easily releases the pollutants in the bottom mud into the water body again to cause secondary pollution, and occupies a large-area storage yard, so that the cost of sludge treatment and disposal is high, and the economic benefit is poor.
The in-situ remediation is a technology for directly carrying out in-situ remediation on the sediment at the position of the sediment by utilizing chemical, biological, physical and other technologies.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the in-situ riverway sediment repair system provided by the invention can effectively prevent sediment pollutants from being released into a water body, prevent the water body from being black and odorous and prevent odor generated by black and odorous sediment from directly dissipating into the air.
The river sediment in-situ remediation system comprises: the flexible structure is covered on the riverbed; the fixing device is used for fixing the flexible structure on the riverbed, and comprises a first fixing structure and a second fixing structure, wherein the first fixing structure is arranged along the water flow direction, the first fixing structure is fixedly connected with the flexible structure, and the second fixing structure is used for embedding the starting end of the flexible structure in the river bottom; and the exhaust device is at least partially arranged below the flexible structure and is used for exhausting gas in the flexible structure.
Further, first fixed knot constructs including first fixed pipe, second fixed knot constructs including the fixed pipe of second, first fixed pipe sets up along rivers direction, the fixed pipe of second with flexible structure is parallel, the fixed pipe of second perpendicular to first fixed pipe and setting are in flexible structure's initiating terminal.
Further, the first fixed pipe is disposed in the middle of the flexible structure.
Further, exhaust apparatus includes blast pipe and air duct, the blast pipe sets up along the river course bank, the air duct with the blast pipe intercommunication.
Further, many the air duct set up perpendicularly in the both sides of first fixed pipe, the both ends of air duct respectively with first fixed pipe with the blast pipe intercommunication, the plane that the air duct formed is in between flexible structure and the bed mud surface, the plane that the air duct formed with flexible structure with the bed mud surface is parallel.
Furthermore, the surface of the air duct is provided with a plurality of air collecting holes.
Further, the riverway bottom mud in-situ remediation system is also provided with a dosing mechanism for putting in remediation agents or microbial agents to remediate the bottom mud.
Further, river sediment repair system still includes the floral tube, the one end of floral tube be used for with it constructs to add medicine and connects, the other end of floral tube set up in the flexible construction.
Further, the flexible structure comprises an LDPE geomembrane, an LLDPE geomembrane, an HDPE geomembrane, a PP geomembrane or a composite geomembrane.
Further, the flexible structure is an HDPE geomembrane.
Based on the technical scheme, the in-situ riverway bottom mud repairing system disclosed by the invention at least has the following beneficial effects:
(1) the flexible structure is used for covering the bottom mud of the river channel, so that the bottom mud pollutants are effectively prevented from being released into the water body, the gas generated by the bottom mud is intensively discharged through the exhaust device, and the odor is effectively prevented from directly escaping into the air;
(2) the riverway bottom mud in-situ remediation system is simple in structure, low in construction cost and small in influence on a riverbed structure and water body storage capacity;
(3) the paving material of the riverway bottom mud in-situ remediation system adopts a flexible structure, has a wide application range and is paved without limitation on the terrain;
(4) the river sediment in-situ remediation system adopts a flexible structure to isolate the overlying water body from the river sediment, is simple to operate, convenient to construct and withdraw, and has little influence on a river ecological system and surrounding residents;
(5) in addition, when restoreing the water that coats, the flexible construction can effectively keep apart the water that coats and riverbed bed mud, prevents that the reaction material of aquatic from getting into inside the bed mud to conveniently clear up the reaction product who deposits on the flexible construction.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the following figures and examples, in which:
FIG. 1 is a schematic view of the arrangement of a structural device in an embodiment of the present invention;
fig. 2 is a cross-sectional view of an embodiment of the present invention.
Reference numerals:
river course 1, flexible construction 10, first fixed pipe 21, second fixed pipe 22, blast pipe 31, air duct 32, medicine mechanism 40, gas collecting hole 321, floral tube 322.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The physical covering technology is that a covering material is additionally arranged on the surface of the bottom mud of the river channel, so that the polluted bottom mud is separated from the overlying water body to a certain degree, and pollutants in the bottom mud are prevented from being released to the water body. Currently, many of the used covering materials include gravel, calcareous bentonite, ash, artificial zeolite, cement and other artificial synthetic materials. The engineering measures can bring a large amount of foreign materials to the river channel, and the foreign materials are not easy to remove, so that the river bed is easily lifted, the river channel is silted, and the reservoir capacity of the water body is reduced.
Referring to fig. 1 to 2, the system for in-situ remediation of river sediment comprises a flexible structure 10, a fixing device and an exhaust device.
Specifically, the flexible structure 10 covers the riverbed; the flexible structure 10 is fixed on a riverbed through a fixing device, the fixing device comprises a first fixing structure and a second fixing structure, the first fixing structure is arranged along the water flow direction, the first fixing structure is fixedly connected with the flexible structure 10, and the second fixing structure embeds the starting end of the flexible structure 10 in the bottom of the river; an exhaust is mounted at least partially under the flexible structure 10 for exhausting gas within the flexible structure 10.
Utilize flexible construction 10 to cover on river course bed mud, prevent that the bed mud pollutant from releasing to the water in the middle of, the foul smell that the bed mud produced then concentrates the discharge through exhaust apparatus, has avoided the direct loss of foul smell to the air. The flexible structure 10 covers the bottom mud and effectively isolates the bottom mud of the river channel from the overlying water body. When the overlying water body is repaired, the flexible structure 10 can effectively prevent reaction materials in the overlying water body from entering the bottom sediment; when the reaction product in the overlying water body is deposited on the flexible structure 10, due to the presence of the flexible structure 10 covered, the reaction product deposited on the flexible structure 10 is convenient for a technician to clean. The repair system has simple structure and low construction cost, and has small influence on the riverbed structure and the water body storage capacity; the paving material adopts the flexible structure 10, the application range is wide, the paving is not limited to the terrain, and the flexible structure 10 is simple in installation and operation and convenient to withdraw.
It is noted that, along the direction of the water flow, the end of the flexible structure 10 that is first contacted by the water flow is the starting end of the flexible structure 10.
With respect to the flexible structure 10, the shape and length of the flexible structure 10 are set according to the topographic conditions of the river, and the shape may be regular or irregular. The flexible structure 10 may be made of geomembrane or other waterproof durable material that functions to isolate the sediment from the overlying water. In the present invention, the flexible structure 10 comprises one of a LDPE geomembrane, a LLDPE geomembrane, a HDPE geomembrane, a PP geomembrane, or a composite geomembrane.
In this embodiment, the flexible structure 10 is a HDPE geomembrane. The HDPE geomembrane is a waterproof barrier material, has excellent environmental stress cracking resistance, low temperature resistance, aging resistance and corrosion resistance, has a longer service life, and can be well applied to the river sediment in-situ repair system provided by the embodiment of the invention.
In a possible embodiment, the first fixed structure comprises a first fixed pipe 21, the second fixed structure comprises a second fixed pipe 22, the first fixed pipe 21 is arranged along the water flow direction, the second fixed pipe 22 is parallel to the flexible structure 10, and the second fixed pipe 22 is perpendicular to the first fixed pipe 21 and is arranged at the starting end of the flexible structure 10. First fixed pipe 21 is fixed with flexible structure 10 and river course bed mud along the rivers direction, the fixed pipe 22 of second is with flexible structure 10's front end embedding river course 1 bottom, rivers in the river course 1 flow through from flexible structure 10's top, rely on the action of gravity of water to compress tightly flexible structure 10 and river course bed mud, and then prevent inside the water infiltration flexible structure 10, for river course bed mud restoration has built a relatively inclosed space, be favorable for follow-up chemistry or biological remediation that carries on.
In one embodiment, the first fixed pipe 21 is disposed in the middle of the flexible structure 10, so as to avoid the situation that the flexible structure 10 is lifted due to asymmetric water flow on both sides of the first fixed pipe 21.
In a possible embodiment, the exhaust means comprises an exhaust pipe 31 and a gas guide pipe 32, the exhaust pipe 31 is arranged along the bank of the river 1, and the gas guide pipe 32 is communicated with the exhaust pipe 31. Set up air duct 32 under flexible structure 10, utilize air duct 32 to collect the gas of river course bed mud release and discharge this gas to the appointed place in unison through blast pipe 31, effectively prevent during the direct loss of foul smell that the bed mud produced from the air, also avoided the gas that the bed mud produced to lead to flexible structure 10 to swell, damage, and then ensured that flexible structure 10 keeps a good separation effect to the bed mud.
As an improvement of the above embodiment, the plurality of air ducts 32 are vertically arranged at two sides of the first fixing tube 21, two ends of the air ducts 32 are respectively communicated with the first fixing tube 21 and the exhaust tube 31, a plane formed by the air ducts 32 is between the flexible structure 10 and the bottom mud surface, and the plane formed by the air ducts is parallel to the flexible structure 10 and the bottom mud surface.
In one possible embodiment, the surface of airway tube 32 is provided with a plurality of gas collection holes 321. The gas-collecting holes 321 are formed in the gas-guiding tube 32, so that the gas generated by the bottom mud can be smoothly guided into the gas-guiding tube 32 and the gas-discharging tube 31.
In a possible embodiment, the in-situ riverway bottom mud repairing system is further provided with a drug adding mechanism 40 for adding a repairing medicament or microbial inoculum to repair the bottom mud. The technology well combines physical barrier and chemical/biological repair technology in a limited space, effectively improves the repair efficiency of the sediment, and has small influence on a river ecological system and surrounding residents.
In a possible embodiment, the riverway bottom mud repairing system further comprises a perforated pipe 322, one end of the perforated pipe 322 is used for being connected with the medicine adding mechanism 40, and the other end of the perforated pipe 322 is disposed in the flexible structure 10. When adding medicine to the bed mud and restoreing, the medicament of medicine mechanism is injected into by the one end of floral tube 322, and the pore on rethread floral tube 322 terminal surface is carried to the bed mud evenly and is reacted, because flexible structure 10 covers on the bed mud, makes the bed mud form a relative confined space simultaneously, provides good environment for the microorganism anaerobism is restoreed. The flexible structure 10 also avoids the instability of the sediment reaction environment caused by the disturbance of the overlying water body, and simultaneously prevents the repair agent from diffusing to the water body in the chemical reaction repair process, which causes agent waste and even secondary pollution.
It should be noted that the flower tube 322 is a tubular structure, and has a plurality of pores on its surface, and the liquid in the tube flows out of the tube through the pores.
In one possible embodiment, the floral tube 322 extends along the interior of the airway tube 32 toward the flexible structure 10, so as to facilitate the liquid in the floral tube 322 to flow toward the sediment through the air-collecting hole 321 of the airway tube 32.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (10)
1. River sediment normal position repair system, its characterized in that includes:
the flexible structure is covered on the riverbed;
the fixing device is used for fixing the flexible structure on the riverbed, and comprises a first fixing structure and a second fixing structure, wherein the first fixing structure is arranged along the water flow direction, the first fixing structure is fixedly connected with the flexible structure, and the second fixing structure is used for embedding the starting end of the flexible structure in the river bottom; and
and the exhaust device is at least partially arranged below the flexible structure and is used for exhausting gas in the flexible structure.
2. The system of claim 1, wherein the first fixing structure comprises a first fixing pipe, the second fixing structure comprises a second fixing pipe, the first fixing pipe is arranged along a water flow direction, the second fixing pipe is parallel to the flexible structure, and the second fixing pipe is perpendicular to the first fixing pipe and is arranged at a starting end of the flexible structure.
3. The in-situ riverway sediment remediation system of claim 2, wherein: the first fixed pipe is arranged in the middle of the flexible structure.
4. The in-situ riverway bottom mud remediation system of claim 2, wherein the exhaust device comprises an exhaust pipe and an air duct, the exhaust pipe is arranged along the bank of the riverway, and the air duct is communicated with the exhaust pipe.
5. The riverway sediment in-situ remediation system of claim 4, wherein the plurality of air guide tubes are vertically arranged on two sides of the first fixing tube, two ends of each air guide tube are respectively communicated with the first fixing tube and the exhaust tube, a plane formed by the air guide tubes is between the flexible structure and the sediment surface, and the plane formed by the air guide tubes is parallel to the flexible structure and the sediment surface.
6. The riverway bottom mud in-situ remediation system of claim 4 or claim 5, wherein the surface of the gas guide tube is provided with a plurality of gas collection holes.
7. The in-situ riverway bottom mud repairing system according to claim 1, wherein the in-situ riverway bottom mud repairing system is further provided with a dosing mechanism for dosing a repairing agent or a microbial inoculum to repair the bottom mud.
8. The in-situ riverway bottom mud repairing system according to claim 7, further comprising a perforated pipe, wherein one end of the perforated pipe is used for being connected with the dosing mechanism, and the other end of the perforated pipe is arranged in the flexible structure.
9. The in situ riverway sediment remediation system of claim 1 wherein the flexible structure comprises a LDPE geomembrane, a LLDPE geomembrane, a HDPE geomembrane, a PP geomembrane or a composite geomembrane.
10. The in situ riverway sediment remediation system of claim 9 wherein the flexible structure is a HDPE geomembrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110417000.1A CN113149380A (en) | 2021-04-19 | 2021-04-19 | Riverway sediment in-situ remediation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110417000.1A CN113149380A (en) | 2021-04-19 | 2021-04-19 | Riverway sediment in-situ remediation system |
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| Publication Number | Publication Date |
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| CN113149380A true CN113149380A (en) | 2021-07-23 |
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| CN202110417000.1A Pending CN113149380A (en) | 2021-04-19 | 2021-04-19 | Riverway sediment in-situ remediation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114988657A (en) * | 2022-05-12 | 2022-09-02 | 上海园林（集团）有限公司 | Black and odorous river sediment in-situ remediation device and remediation method based on microbial immobilization technology |
-
2021
- 2021-04-19 CN CN202110417000.1A patent/CN113149380A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114988657A (en) * | 2022-05-12 | 2022-09-02 | 上海园林（集团）有限公司 | Black and odorous river sediment in-situ remediation device and remediation method based on microbial immobilization technology |
| CN114988657B (en) * | 2022-05-12 | 2023-04-11 | 上海园林（集团）有限公司 | Black and odorous river sediment in-situ remediation device and remediation method based on microbial immobilization technology |
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