Integrated comprehensive treatment ship for in-situ elution, coverage and restoration of river and lake bottom mud

Abstract

The utility model discloses an integrated comprehensive treatment ship for in-situ elution, coverage and restoration of river and lake bottom mud. The treatment ship comprises a floating platform, an aeration disturbance device, an active covering material adding device, a microbial agent adding device, a plasma oxidation device and a sewage treatment device, wherein the aeration disturbance device, the active covering material adding device, the microbial agent adding device, the plasma oxidation device and the sewage treatment device are arranged on the floating platform; the aeration disturbance device comprises a box body with a hollow bottom and a lifting mechanism for driving the box body to lift, the top of the box body is provided with an air inlet, a feeding port and a water outlet, an aeration pipeline connected with the air inlet is arranged in the box body, the feeding port is respectively connected with the active covering material feeding device and the microbial agent feeding device through pipelines, and the water outlet is communicated with the aeration pipeline. The water outlet is connected to the water inlet end of the plasma oxidation device through a pipeline, and the water outlet end of the plasma oxidation device is connected to the sewage treatment device through a pipeline. According to the device, in-situ elution, in-situ coverage and in-situ remediation technologies of the bottom mud are integrated, and comprehensive treatment and operation maintenance are carried out on the polluted bottom mud of rivers and lakes.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection equipment, in particular to an integrated comprehensive treatment ship for in-situ washing, covering and repairing of river and lake bottom mud. Background Art

[0002] Lakes and rivers are eutrophic, and a large amount of sediment has accumulated at the bottom of the water, which contains nutrients such as nitrogen and phosphorus and heavy metal pollutants that cause eutrophication of the water. These harmful substances have destroyed the water ecological environment and have a serious impact on human health.

[0003] There are three main ways to treat sediment: one is physical remediation technology, such as dredging, water diversion and sand filling and other engineering means to eliminate pollution; the second is to use aeration, aluminum salts and iron salts and other coagulants to inhibit the release of endogenous phosphorus. This method can improve the black and smelly phenomenon of water bodies, achieve clear water quality and inhibit eutrophication of water bodies; the third is biological remediation technology, which uses organisms to degrade pollutants and eliminate sediment pollution. The speed is slow, but the effect is good. It is now widely used in engineering examples. Therefore, in actual engineering, we usually choose physical remediation technology. Among the many physical remediation methods, river dredging technology is widely used. At present, a commonly used equipment is the sediment treatment ship. However, this equipment has some shortcomings: 1. The traditional flocculation sedimentation process occupies a large space during the treatment process, and the unit space treatment flow is small. 2. The precipitation of flocs after coagulation depends entirely on gravity sedimentation, which has low efficiency and poor adaptability, and cannot respond to the complex and changing on-site environment in time. 3. The ammonia nitrogen and phosphorus content of the traditional sediment elution water quality fails to meet the required water quality requirements. 4. Traditional sediment elution cannot control the release of endogenous sediment phosphorus, and it is difficult to stabilize heavy metals and remove nitrogen and organic matter. Utility Model Content

[0004] The utility model aims to provide an integrated comprehensive treatment vessel for in-situ elution, covering and repair of river and lake bottom mud, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an integrated comprehensive treatment vessel for in-situ elution, covering and repair of river and lake bottom mud, the treatment vessel comprising a floating platform and an aeration disturbance device arranged thereon, an active covering material adding device for in-situ covering of bottom mud, a microbial agent adding device for in-situ repair of bottom mud, a plasma oxidation device and a sewage treatment device, the aeration disturbance device comprising a box body with a hollow bottom and a lifting mechanism for driving the box body to rise and fall, the top of the box body is provided with an air inlet, an adding port and a water outlet, an aeration pipe connected to the air inlet is arranged in the box body, the adding port is connected to the active covering material adding device and the microbial agent adding device respectively through pipelines, the water outlet is connected to the water inlet end of the plasma oxidation device through a pipeline, and the water outlet end of the plasma oxidation device is connected to the sewage treatment device through a pipeline.

[0006] Furthermore, a filter screen is arranged below the corresponding water outlet in the box.

[0007] Furthermore, the plasma oxidation device includes a plasma oxidation pool.

[0008] Furthermore, the high voltage electrode of the plasma oxidation pool is arranged on the top of the plasma oxidation pool, the grounding electrode of the plasma oxidation pool is arranged on the bottom side of the plasma oxidation pool and connected to the pool wall of the plasma oxidation pool, and an air distributor is arranged at the bottom of the plasma oxidation pool.

[0009] Furthermore, the sewage treatment device includes a coagulation and stirring tank, a dosing box and a sludge storage box. The dosing box is arranged at the water inlet end of the coagulation and stirring tank. An agitator, a magnetic separation disk and a scraper for peeling off the magnetic flocs on the magnetic separation disk are arranged in sequence in the coagulation and stirring tank along the direction from the water inlet end to the water outlet end. A conveyor connected to the sludge storage box is arranged below the scraper for transporting the magnetic flocs to the sludge storage box for storage.

[0010] Furthermore, the sewage treatment device also includes a magnetic separator and a sludge filter press, the sludge storage box is connected to the feed port of the magnetic separator through a sludge pump, and the non-magnetic floc discharge port of the magnetic separator is connected to the sludge filter press.

[0011] Furthermore, the active covering material dosing device includes an aluminum-based phosphorus-locking agent dosing box.

[0012] Furthermore, the microbial agent dosing device includes a microbial agent dosing box.

[0013] Furthermore, the lifting mechanism includes a lifting hydraulic cylinder, a cylinder barrel of the lifting hydraulic cylinder is fixedly connected to the floating platform, and a piston rod of the lifting hydraulic cylinder is fixedly connected to the top four corners of the box body.

[0014] Furthermore, paddle wheel propellers are provided on both sides of the floating platform.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model breaks the traditional centralized dredging after a large amount of sediment is deposited, and integrates the technologies of in-situ elution, in-situ covering and in-situ repair of the sediment to form an integrated multifunctional comprehensive treatment ship. Based on the concept of "operation and maintenance", it conducts comprehensive treatment and operation and maintenance of polluted sediments in rivers and lakes, uses aeration for disturbance and cooperates with active covering material adding device and microbial agent adding device to continuously increase oxygen to improve the original anaerobic environment, while allowing the chemical agents of the active covering material adding device to settle to the bottom of the water body by gravity along with the heavier inorganic particles washed off, forming in-situ covering, controlling the release of endogenous sediment phosphorus, and allowing the biological agents of the microbial agent adding device to diffuse in the water body for in-situ repair. Improve the ecological environment in the water body, stabilize heavy metals, remove nitrogen and organic matter, purify water quality, improve water transparency, increase the germination rate of aquatic plants, and ultimately achieve natural recovery of the water body ecology, build a self-ecological system with submerged plants or artificial aquatic plants, and ensure that the water body is long-term and clear; optimize the traditional sediment elution process. During the sediment elution process, a plasma oxidation device is added. The mud-water mixture is removed from part of the ammonia nitrogen and part of the pollutants through the plasma corona discharge cell, destroying the sediment structure, so that the cell water and pore water can be released, and the subsequent sediment dehydration efficiency is improved, solving the sediment dehydration problem and the tail water ammonia nitrogen and organic matter treatment problem, so that the effluent water quality meets the standard and improves the sediment elution effect;

[0017] 2. Adopt high-efficiency magnetic separation flocculation sedimentation to remove phosphorus and make the water clear and transparent. It can be directly discharged into natural water bodies to solve the problem of total phosphorus treatment of tail water generated during dredging and dehydration. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of an integrated comprehensive treatment vessel for in-situ washing, covering and repairing of river and lake bottom mud according to the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the integrated comprehensive management ship-borne aeration disturbance device for in-situ elution, covering and repair of river and lake bottom mud of the utility model;

[0020] Figure 3 This is the interior plan layout of the control room in the integrated comprehensive treatment ship for in-situ elution, covering and repair of river and lake bottom mud of the utility model;

[0021] In the figure, 1-floating platform, 11-paddle wheel propeller, 12-hydraulic station, 2-aeration disturbance device, 21-box, 22-lifting hydraulic cylinder, 23-air inlet, 241-aluminum-based phosphorus lock agent addition port, 242-microorganism agent addition port, 25-water outlet, 26-filter screen, 27-aeration pipeline, 28-air compressor, 29-water outlet pump, 3-active covering material addition device, 4-microorganism agent addition device, 5-plasma oxidation tank, 60-coagulation and stirring tank, 61-dosing box, 62-sludge storage box, 63-magnetic separator, 64-sludge filter press, 65-agitator, 66-magnetic separation disk, 67-scraper, 69-sludge pump, 7-control room, 71-PLC control cabinet, 72-generator. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figures 1 to 3 As shown, this embodiment provides an integrated comprehensive treatment vessel for in-situ elution, covering and repair of river and lake sediments, the treatment vessel comprises a floating platform 1 and an aeration disturbance device 2 arranged thereon, an active covering material dosing device 3 for in-situ covering of sediments, a microbial agent dosing device 4 for in-situ repair of sediments, a plasma oxidation device and a sewage treatment device, the floating platform 1 is an operating platform composed of a standardized floating body, and paddle wheel propellers 11 are arranged on both sides of the floating platform 1, the active covering material dosing device 3 comprises an aluminum-based phosphorus locking agent dosing box, the aluminum-based phosphorus locking agent is a solid phase, and the microbial agent dosing device comprises a microbial agent dosing box, the microbial agent is a liquid phase;

[0024] The aeration disturbance device 2 is arranged at the head end of the floating platform 1, and includes a box body 21 with a hollow bottom and a lifting mechanism for driving the box body 21 to rise and fall. The front and rear side panels of the box body 21 are streamlined structures to facilitate subsequent continuous operation. The top of the box body 21 is provided with an air inlet 23, a dosing port and a water outlet 25. A filter screen 26 is arranged below the corresponding water outlet 25 in the box body 21, and an aeration pipe 27 connected to the air inlet 23 is arranged. The air inlet end of the air inlet 23 is connected to an air compressor 28 through a pipeline, and the dosing port is connected to the active covering material dosing device 3 and the microbial agent dosing device 4 through pipelines, for example Two injection ports may be provided, namely, an aluminum-based phosphorus lock agent injection port 241 and a microbial agent injection port 242. The water outlet 25 is connected to a water outlet pump 29 through a pipeline and is connected to the water inlet of a plasma oxidation device. The water outlet of the plasma oxidation device is connected to a sewage treatment device through a pipeline. The lifting mechanism includes a lifting hydraulic cylinder 22. The cylinder barrel of the lifting hydraulic cylinder 22 is fixedly connected to the floating platform 1, for example, fixedly connected to a bracket provided on the floating platform 1. The piston rod of the lifting hydraulic cylinder 22 is fixedly connected to the top four corners of the box body 21. The lifting hydraulic cylinder 22 is connected to the hydraulic station 12 provided on the floating platform 1 for fluid supply.

[0025] The plasma oxidation device comprises a plasma oxidation pool 5, wherein a high voltage electrode of the plasma oxidation pool 5 is arranged at the top of the plasma oxidation pool, and a ground electrode of the plasma oxidation pool 5 is arranged at the bottom side of the plasma oxidation pool and connected to the pool wall of the plasma oxidation pool. An air distributor is arranged at the bottom of the plasma oxidation pool 5, and corona spark discharge is used, and liquid surface discharge is used. During discharge, air is blown in from the bottom air distributor to form a liquid surface pulse spark discharge; when the air flow rate continues to increase, the discharge needle sinks into the bubble layer to form a pulse corona discharge, and a large amount of active substances such as hydroxyl free radicals are generated to stabilize heavy metals, remove organic matter and ammonia nitrogen, and destroy the structure of the bottom mud, so that the cell water and pore water can be released, thereby improving the subsequent bottom mud dehydration efficiency;

[0026] The sewage treatment device includes a coagulation and stirring tank 60, a dosing box 61, a sludge storage box 62, a magnetic separator 63 and a sludge filter press 64. The dosing box 61 is arranged at the water inlet end of the coagulation and stirring tank 60. The coagulation and stirring tank 60 is provided with a stirrer 65, a magnetic separation disk 66 and a scraper 67 for stripping the magnetic flocs on the magnetic separation disk 66 in sequence along the direction from the water inlet end to the water outlet end. A magnetic separator 63 is provided below the scraper 67 and is connected to the sludge storage box 62. The non-magnetic flocs are transported to a conveyor for storage in a mud box 62, the mud box 62 is connected to the feed port of a magnetic separator 63 through a mud pump 69, the non-magnetic flocs discharge port of the magnetic separator 63 is connected to a sludge filter press 64, a coagulant is added to the dosing box 61, the magnetic separation disc 66 and the magnetic separator 63 are both existing equipment, which will not be described here, the magnetic blocks are made of strong permanent magnets made of N38 sintered NdFeB, and the conveyor is an auger conveyor;

[0027] The floating platform 1 is also provided with a control room 7, in which a PLC control cabinet 71 for controlling various electrical equipment and a generator 72 connected to the PLC control cabinet 71 are arranged. The hydraulic station 12, the air compressor 28, the magnetic separator 63, and the sludge filter press 64 are also arranged in the control room 7.

[0028] When the integrated comprehensive treatment ship for in-situ elution, covering and repair of river and lake bottom mud of the utility model is working, the generator 72 runs to generate electricity, which is transmitted to various electrical equipments of the floating platform 1 through the PLC control cabinet 71, wherein the hydraulic station 12 controls the lifting hydraulic cylinder 26, so that the aeration disturbance device 2 is lowered to a suitable depth, and the air compressor 28 and the aeration pipeline 27 adjust the pressure according to the actual situation on site to flush the surface of the bottom mud, and the nitrogen and phosphorus in the bottom mud are fully released into the water body inside the box body through the disturbance of the bottom mud, and the lighter mud water in the upper part enters the box body 21 through the filter screen 26, and the heavier inorganic matter in the bottom mud is intercepted by the filter screen 26 by gravity. Sedimentation; the two dosing pipelines of the box 21 are respectively the aluminum-based phosphorus lock agent and the microbial agent dosing pipelines, which are respectively connected to the aluminum-based phosphorus lock agent dosing port 241 and the microbial agent dosing port 242, wherein the active covering material dosing device 3 is dosing in a manner of mixing the aluminum-based phosphorus lock agent with part of the river water into a suspended solution for gravity dosing, and the microbial agent dosing device 4 is dosing in a manner of direct gravity dosing, and the dosing pipes of the two are arranged at the bottom of the box 21, and while eluting the bottom mud, the liquid aluminum-based phosphorus lock agent and the microbial agent are added to complete the in-situ covering and perform in-situ repair; the rotten leaves and dead branches on the riverbed are filtered through the filter screen 26. The muddy water entering the box 21 is lifted by the outlet pump 29 from the outlet 25 and transported to the plasma oxidation pool 5. After the organic nitrogen and some pollutants in the water are oxidized and degraded by a large number of free radicals generated in the plasma corona discharge, the treated water flows into the water inlet pipeline of the coagulation stirring pool 60, and is fully stirred and coagulated by the coagulant transported from the dosing box 61 for adding coagulant and the stirrer 65, and then magnetic loading and adsorption are performed. The flocs formed by the heavy metals and N and P elements treated with drugs in the muddy water are magnetically adsorbed by the magnetic separation disk 66. The magnetic separation disk 66 rotates and contacts with the scraper 67, and the flocs are scraped to the conveyor below. The conveyor transports the magnetic flocs to the inside of the mud storage box 62 on both sides. The water flow basically meets the standards for nitrogen, phosphorus, COD and other indicators, and the water body is clear and transparent. The treated water flows back to the river and lake through the outlet of the coagulation and mixing tank 60; the sludge deposited in the mud storage box 62 is extracted by the mud pump 10 and the pipeline and transported to the magnetic separator 63 for magnetic floc separation, and the magnetic floc is recovered and reused from the magnetic seeds of the separation port of the magnetic separator 63, and the non-magnetic sludge is transported to the sludge filter press 33 through the non-magnetic floc discharge port and the pipeline. After the filtration, the mud cake is bagged and transported to prevent secondary pollution. The mud cake can be directly transported to the shore, and aerobically fermented with garden waste on site to produce municipal garden greening organic fertilizer, and then applied to garden greening on site, realizing a "closed loop" of resource utilization.

[0029] The utility model breaks the traditional centralized dredging after a large amount of bottom mud is deposited, and integrates the technologies of in-situ elution, in-situ covering and in-situ repair of bottom mud to form an integrated multifunctional comprehensive treatment ship. Based on the concept of "operation and maintenance", it conducts comprehensive treatment and operation and maintenance of polluted bottom mud in rivers and lakes, uses aeration for disturbance and cooperates with active covering material adding device and microbial agent adding device to continuously increase oxygen to improve the original anaerobic environment, and at the same time makes the chemical agent of the active covering material adding device settle to the bottom of the water body by gravity along with the heavier inorganic particles washed off, forming in-situ covering, controlling the release of endogenous bottom mud phosphorus, and making the biological agent of the microbial agent adding device diffuse in the water body for in-situ repair, improving the ecological environment in the water body, stabilizing heavy metals, removing nitrogen and organic matter, purifying water The water quality is improved, the transparency of the water body is increased, the germination rate of aquatic plants is increased, and finally the natural restoration of the water ecology is achieved. A self-ecosystem is constructed with submerged plants or artificial aquatic plants to ensure that the water body is kept clean for a long time. The traditional sediment elution process is optimized. During the sediment elution process, a plasma oxidation device is added. The mud-water mixture is subjected to a plasma corona discharge cell to remove part of the ammonia nitrogen and part of the pollutants, destroy the sediment structure, release the cell water and pore water, improve the subsequent sediment dehydration efficiency, solve the sediment dehydration problem and the tail water ammonia nitrogen and organic matter treatment problem, make the effluent water quality meet the standard, and improve the sediment elution effect. The high-efficiency magnetic separation flocculation sedimentation is adopted: phosphorus removal, the water body is clear and transparent, and it is directly discharged into the natural water body to solve the problem of total phosphorus treatment in the tail water generated during the dredging and dehydration process.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An integrated comprehensive treatment vessel for in-situ elution, covering and repair of river and lake sediments, characterized by: The treatment vessel includes a floating platform and an aeration disturbance device arranged thereon, an active covering material adding device for in-situ covering of sediment, a microbial agent adding device for in-situ repair of sediment, a plasma oxidation device and a sewage treatment device. The aeration disturbance device includes a box body with a hollow bottom and a lifting mechanism for driving the box body to rise and fall. An air inlet, an adding port and a water outlet are arranged on the top of the box body. An aeration pipeline connected to the air inlet is arranged in the box body. The adding port is connected to the active covering material adding device and the microbial agent adding device respectively through pipelines. The water outlet is connected to the water inlet end of the plasma oxidation device through a pipeline, and the water outlet end of the plasma oxidation device is connected to the sewage treatment device through a pipeline.

2. The integrated comprehensive treatment vessel for in-situ elution, covering and repair of river and lake sediments according to claim 1 is characterized by: A filter screen is arranged below the corresponding water outlet in the box.

3. The integrated comprehensive treatment vessel for in-situ elution, covering and repair of river and lake sediments according to claim 1 is characterized by: The plasma oxidation device includes a plasma oxidation pool.

4. The integrated comprehensive treatment vessel for in-situ elution, covering and repair of river and lake sediments according to claim 3 is characterized by: The high voltage electrode of the plasma oxidation pool is arranged on the top of the plasma oxidation pool, the grounding electrode of the plasma oxidation pool is arranged on the bottom side of the plasma oxidation pool and connected to the pool wall of the plasma oxidation pool, and an air distributor is arranged at the bottom of the plasma oxidation pool.

5. The integrated comprehensive treatment vessel for in-situ elution, covering and repair of river and lake sediments according to claim 1 or 3, characterized in that: The sewage treatment device includes a coagulation and stirring tank, a dosing box and a sludge storage box. The dosing box is arranged at the water inlet end of the coagulation and stirring tank. An agitator, a magnetic separation disk and a scraper for peeling off the magnetic flocs on the magnetic separation disk are arranged in sequence in the coagulation and stirring tank along the direction from the water inlet end to the water outlet end. A conveyor connected to the sludge storage box is arranged below the scraper for transporting the magnetic flocs to the sludge storage box for storage.

6. The integrated comprehensive treatment vessel for in-situ elution, covering and repair of river and lake sediments according to claim 5 is characterized by: The sewage treatment device also includes a magnetic separator and a sludge filter press. The sludge storage box is connected to the feed port of the magnetic separator through a sludge pump, and the non-magnetic floc discharge port of the magnetic separator is connected to the sludge filter press.

7. The integrated comprehensive treatment vessel for in-situ elution, covering and repair of river and lake sediments according to claim 1 is characterized by: The active covering material dosing device comprises an aluminum-based phosphorus-locking agent dosing box.

8. The integrated comprehensive treatment vessel for in-situ elution, covering and repair of river and lake bottom mud according to claim 1 or 7, characterized in that: The microbial agent dosing device comprises a microbial agent dosing box.

9. The integrated comprehensive treatment vessel for in-situ elution, covering and repair of river and lake sediments according to claim 1 is characterized by: The lifting mechanism comprises a lifting hydraulic cylinder, a cylinder barrel of the lifting hydraulic cylinder is fixedly connected to the floating platform, and a piston rod of the lifting hydraulic cylinder is fixedly connected to the top four corners of the box body.

10. The integrated comprehensive treatment vessel for in-situ elution, covering and repair of river and lake sediments according to claim 1 is characterized by: Paddle wheel propellers are arranged on both sides of the floating platform.

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