CN215712553U - Sludge dewatering system for dredging engineering - Google Patents
Sludge dewatering system for dredging engineering Download PDFInfo
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- CN215712553U CN215712553U CN202122138317.XU CN202122138317U CN215712553U CN 215712553 U CN215712553 U CN 215712553U CN 202122138317 U CN202122138317 U CN 202122138317U CN 215712553 U CN215712553 U CN 215712553U
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Abstract
The utility model discloses a sludge dewatering system for dredging engineering, which comprises a soil engineering pipe bag, a dosing pump, a slurry pump, a pipeline mixer and a full-automatic dosing machine. The geotechnical pipe bag is placed on the ground in the dewatering station, communicated drainage ditches are arranged on the periphery of the ground of the dewatering station, the bottom of each drainage ditch is connected with the tail water detection tank through a drainage pipe, an inlet of the geotechnical pipe bag is connected with an outlet of the slurry conveying pipeline, and an inlet of the slurry conveying pipeline is connected with an outlet of the pipeline mixer; the dosing pump is arranged on the dosing pipeline, and the outlet of the dosing pipeline is connected with the inlet of the pipeline mixer; the slurry pump is arranged on a sludge pipeline, the inlet of the sludge pipeline is connected with a sludge source, and the outlet of the sludge pipeline is also connected with the inlet of the pipeline mixer; the outlet of the full-automatic dosing machine is connected with the inlet of the dosing pipeline. The sludge dewatering system can automatically, continuously and totally remove water from slurry or digested sludge in a flow state, and convert the slurry or the digested sludge into semi-solid or solid sludge blocks.
Description
Technical Field
The utility model relates to a sludge dewatering system for dredging engineering.
Background
The environmental protection dredging is an effective engineering means for removing the polluted bottom mud of rivers and lakes, the polluted bottom mud is dredged by a cutter suction dredger, the slurry is conveyed to a storage yard or a dehydration yard through a closed pipeline for dehydration treatment, and the discharged residual water is discharged after reaching the standard after being treated. The dewatered sludge also has higher water content, and because of the characteristic of combining water and sludge particles, the mechanical method has certain limitation on removal, and the organic matter content and the ash content in the sludge, particularly the addition amount of a flocculating agent, have important influence on the final solid content. In general, a sludge content of 20% to 30% can be obtained by mechanical dewatering, the sludge formed also being called mudcake. The water content of the sludge cake is still high, the sludge cake has fluid properties, and the disposal difficulty and cost of the sludge cake are still high, so that further reduction is necessary.
The dehydration of the geotextile tube bag is a commonly adopted dehydration process, and has the advantages of totally-enclosed treatment, no change of the characteristics of bottom mud and the like. The geotextile tube is a tube geotextile bag with a filter structure and woven by high-toughness polypropylene yarns. The dehydration and solidification method for the soil engineering pipe bag is characterized in that a solution of a high molecular flocculant according to a certain proportion and dosage is put into sludge slurry in the process of underwater dredging, the sludge slurry is fully mixed and then filled into the soil engineering pipe bag, two power factors, namely a filtering structure of the equivalent pore size of the soil engineering pipe bag and liquid pressure in the soil engineering pipe bag, are utilized, water seeps out of the pipe bag, and sludge is reserved in the pipe bag, so that the effect of reducing the volume of the sludge is achieved. The main components of the flocculating agent are aluminum sulfate, calcium sulfate, sodium carbonate, diatomite and citric acid; in the process of dissolving such substances in water, the dissolving process is often complicated and easy to agglomerate due to the high viscosity of the substances. At present, manual dosing and automatic dosing are generally adopted, wherein post personnel directly add a flocculating agent into a stirring barrel for stirring; the automatic dosing is that the medicine is stirred and dissolved in advance above the stirring barrel. However, both the two modes need to be participated by people, the traditional automatic dosing mode also needs to be added and stirred by people after dissolution, the automatic operation cannot be realized, and the effluent treated by the traditional dosing machine contains impurities, so that the subsequent use is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a sludge dewatering system for dredging engineering, which can automatically, continuously and totally remove water from fluid mud, concentrated or digested sludge and convert the fluid mud, the concentrated or digested sludge into semisolid or solid mud blocks.
The purpose of the utility model is realized as follows: a sludge dewatering system for dredging engineering comprises a soil engineering pipe bag, a dosing pump, a slurry pump, a pipeline mixer and a full-automatic dosing machine; wherein the content of the first and second substances,
the geotechnical pipe bag is placed on the ground in the dewatering station, communicated drainage ditches are arranged on the periphery of the ground in the dewatering station, the bottom of each drainage ditch is connected with the tail water detection tank through a drainage pipe, an inlet of the geotechnical pipe bag is connected with an outlet of the slurry conveying pipeline, and an inlet of the slurry conveying pipeline is connected with an outlet of the pipeline mixer;
the dosing pump is arranged on the dosing pipeline, and the outlet of the dosing pipeline is connected with the inlet of the pipeline mixer;
the slurry pump is arranged on a sludge pipeline, the inlet of the sludge pipeline is connected with a sludge source, and the outlet of the sludge pipeline is also connected with the inlet of the pipeline mixer;
the outlet of the full-automatic dosing machine is connected with the inlet of the dosing pipeline.
The sludge dewatering system for the dredging engineering is characterized in that the full-automatic chemical dosing machine comprises a control box, a chemical dosing hopper, a screw feeder, a water dosing pipeline, a stirrer and a liquid outlet pipeline; a regulator is arranged in the control box; the chemical box is provided with a liquid level meter in signal connection with the control box; the dosing hopper is arranged on one side of the top end of the chemical box; the screw feeder is arranged between the outlet of the medicine feeding hopper and the medicine inlet of the medicine box; the driving motor of the screw feeder is a variable frequency motor and is in signal connection with the regulator; the water feeding pipeline is arranged below the chemical box and connected with a water inlet of the chemical box, and a water feeding electromagnetic valve in signal connection with the control box is arranged on the water feeding pipeline; the stirrer is arranged in the middle of the top end of the chemical box; the liquid outlet pipeline is connected with a liquid outlet on the chemical box, and a detector in signal connection with the regulator is arranged on the liquid outlet pipeline.
The sludge dewatering system for dredging engineering is characterized in that the sludge source is a sludge homogenizing pool, and the sludge homogenizing pool is used for pumping sludge by a dredger.
The sludge dewatering system for dredging engineering is characterized in that the ground of the dewatering station comprises a non-woven fabric, an HDPE impermeable membrane, a non-woven fabric and a pebble drainage layer which are sequentially laid on the levelly and tamped plain soil from bottom to top.
The sludge dewatering system for dredging engineering has the following characteristics:
1) the construction is totally enclosed, so that secondary pollution is not easy to cause;
2) the dehydration effect is obvious, and the water content of the discharged mud is lower. Meanwhile, the sewage is directly treated and reused after being refluxed, so that energy conservation and emission reduction are realized;
3) the efficient physicochemical coagulation complexing agent with corresponding amount can be automatically added according to the water content of the sludge, so that the treatment efficiency is greatly improved, and the labor cost is saved.
Drawings
FIG. 1 is a schematic structural view of a sludge dewatering system for dredging engineering according to the present invention;
fig. 2 is a schematic structural diagram of a full-automatic dosing machine in the sludge dewatering system.
Detailed Description
The utility model will be further explained with reference to the drawings.
Referring to fig. 1 and 2, the sludge dewatering system for dredging engineering of the present invention includes a soil engineering pipe bag 1, a chemical feeding pump 2, a slurry pump 3, a pipeline mixer 4 and a full-automatic chemical feeding machine 5; wherein the content of the first and second substances,
the geotechnical pipe bag 1 is placed on the ground in a dewatering station, the ground of the dewatering station comprises 600 g/square meter non-woven fabric, 1.5mm thick HDPE anti-seepage film, 600 g/square meter non-woven fabric and 30-50 mm thick pebble drainage layer which are sequentially laid on plain soil which is leveled and compacted from bottom to top, drainage ditches 11 are arranged on the periphery of the ground of the dewatering station, the bottoms of the drainage ditches 11 are connected with a tail water detection pool 13 through drainage pipes 12, the inlet of the geotechnical pipe bag 1 is connected with the outlet of a slurry conveying pipeline 14, and the inlet of the slurry conveying pipeline 14 is connected with the outlet of a pipeline mixer 4;
the dosing pump 2 is arranged on a dosing pipeline 21, and the outlet of the dosing pipeline 21 is connected with the inlet of the pipeline mixer 4;
the slurry pump 3 is arranged on a sludge pipeline 31, the inlet of the sludge pipeline 31 is connected with a sludge source, the sludge source is a sludge homogenizing pool 6, and the sludge homogenizing pool 6 pumps sludge by a hopper ship; the outlet of the sludge pipeline 31 is also connected with the inlet of the pipeline mixer 4;
the outlet of the full-automatic dosing machine 5 is connected with the inlet of the dosing pipeline 21, and the full-automatic dosing machine 5 is provided with a control box 50, a chemical box 51, a dosing hopper 52, a screw feeder 53, a dosing pipeline 54, a stirrer 55 and a liquid outlet pipeline; a regulator is arranged in the control box 50; the chemical box 51 is arranged on the base of the medicine adding machine, and the liquid level meter 510 which is in signal connection with the control box 50 is arranged on the chemical box 51; the medicine adding funnel 52 is arranged at one side of the top end of the medicine box 51; the screw feeder 53 is arranged between the outlet of the medicine feeding hopper 52 and the medicine inlet of the medicine box 51, and a driving motor 530 of the screw feeder 53 is a variable frequency motor and is in signal connection with a regulator; the water adding pipeline 54 is arranged below the chemical tank 51 and is connected with the water inlet of the chemical tank 51, and the water adding pipeline 54 is provided with a water inlet electromagnetic valve 540 which is in signal connection with the control box 50; the agitator 55 is provided at the center of the top end of the chemical tank 51. The liquid outlet pipeline is connected with a liquid outlet on the chemical box 51, and the liquid outlet pipeline is provided with a detector 56 in signal connection with the regulator, a pressure gauge 57 in signal connection with the control box 50 and a check valve 58.
The working principle of the full-automatic dosing machine 5 is as follows: the powder medicament is added into the medicament feeding hopper 52, and the driving motor 530 of the screw feeder 53 changes the rotating speed according to the adjusting signal output by the adjuster, so that the screw feeder 53 adjusts the dosage of the medicament put into the medicament box 51; clear water is added into the chemical box 50 from the water adding pipeline 54; the level meter 510 detects the liquid level in the chemical tank 51, and when the level meter 51 detects that the water level reaches a threshold value, the agitator 55 is driven by the control box 50 to agitate and mix the liquid. The medicament is mixed with clean water to form a medicament, the medicament is conveyed to a liquid outlet pipeline through a liquid outlet, the concentration of the medicament is detected by the detector 56, an electric signal proportional to the concentration is input into the regulator to be compared with a set value, a deviation signal is obtained, the regulator performs proportional and integral operation on the deviation signal according to the process requirement, the operation result signal is conveyed to the driving motor 530 of the screw feeder 53, the rotational speed is changed through the driving motor 530 of the screw feeder 53 to adjust the dosage, and the control box 50 controls the opening degree of the water inlet electromagnetic valve 540 in the water adding pipeline 54 to adjust the water inlet quantity; the medicine outlet pipeline sends the medicine into the medicine adding pipeline 21.
According to the sludge dewatering system for dredging engineering, sludge in a sludge homogenizing tank 6 is conveyed to a pipeline mixer 4 through a slurry pump 3, a high-efficiency physicochemical coagulation complexing agent is added through a full-automatic dosing machine 5 and then conveyed to the pipeline mixer 4 through a dosing pump 2, the high-efficiency physicochemical coagulation complexing agent and the sludge are uniformly mixed in the pipeline mixer 4 and then conveyed into a geotechnical pipe bag 1, a filtering structure with an equivalent pore diameter and two power factors of the pressure of liquid in the geotechnical pipe bag 1 are formed by weaving materials of the geotechnical pipe bag 1, the water and the sludge are promoted to be separated by adding a water purifying agent, the water seeps out of the geotechnical pipe bag 1, the sludge is stored in the geotechnical pipe bag 1, the seeped water flows into a drainage ditch 11 and is collected into a tail water detection tank 13 through a drainage pipe 12, and the sludge is discharged into a municipal sewage pipe through a pressure pump after the water is detected to be qualified.
And (3) dehydrating and drying the sludge with the water content of 70% in the sludge homogenizing tank 6 to the water content of 60% through a sludge dehydrating system, so that the dried sludge can be subjected to garbage recycling treatment.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions should also fall within the scope of the present invention, and should be defined by the claims.
Claims (4)
1. A sludge dewatering system for dredging engineering comprises a soil engineering pipe bag, a dosing pump, a slurry pump, a pipeline mixer and a full-automatic dosing machine; it is characterized in that the preparation method is characterized in that,
the geotechnical pipe bag is placed on the ground in the dewatering station, communicated drainage ditches are arranged on the periphery of the ground in the dewatering station, the bottom of each drainage ditch is connected with the tail water detection tank through a drainage pipe, an inlet of the geotechnical pipe bag is connected with an outlet of the slurry conveying pipeline, and an inlet of the slurry conveying pipeline is connected with an outlet of the pipeline mixer;
the dosing pump is arranged on a dosing pipeline, and the outlet of the dosing pipeline is connected with the inlet of the pipeline mixer;
the slurry pump is arranged on a sludge pipeline, the inlet of the sludge pipeline is connected with a sludge source, and the outlet of the sludge pipeline is also connected with the inlet of the pipeline mixer;
the outlet of the full-automatic dosing machine is connected with the inlet of the dosing pipeline.
2. The sludge dewatering system for dredging engineering according to claim 1, wherein the fully automatic dosing machine comprises a control box, a dosing tank, a dosing hopper, a screw feeder, a water feeding pipeline, a stirrer and a liquid outlet pipeline; a regulator is arranged in the control box; the chemical box is provided with a liquid level meter in signal connection with the control box; the dosing hopper is arranged on one side of the top end of the chemical box; the screw feeder is arranged between the outlet of the medicine feeding hopper and the medicine inlet of the medicine box; the driving motor of the screw feeder is a variable frequency motor and is in signal connection with the regulator; the water feeding pipeline is arranged below the chemical box and connected with a water inlet of the chemical box, and a water feeding electromagnetic valve in signal connection with the control box is arranged on the water feeding pipeline; the stirrer is arranged in the middle of the top end of the chemical box; the liquid outlet pipeline is connected with a liquid outlet on the chemical box, and a detector in signal connection with the regulator is arranged on the liquid outlet pipeline.
3. Sludge dewatering system for dredging engineering according to claim 1, characterized in that the sludge source is a sludge homogenizing tank, which is pumped with sludge by a hopper ship.
4. The sludge dewatering system for dredging engineering according to claim 1, wherein the ground of the dewatering station comprises a non-woven fabric, an HDPE impermeable membrane, a non-woven fabric and a pebble drainage layer which are sequentially laid on the leveled and compacted plain soil from bottom to top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122138317.XU CN215712553U (en) | 2021-09-06 | 2021-09-06 | Sludge dewatering system for dredging engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122138317.XU CN215712553U (en) | 2021-09-06 | 2021-09-06 | Sludge dewatering system for dredging engineering |
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| Publication Number | Publication Date |
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| CN215712553U true CN215712553U (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122138317.XU Active CN215712553U (en) | 2021-09-06 | 2021-09-06 | Sludge dewatering system for dredging engineering |
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2021
- 2021-09-06 CN CN202122138317.XU patent/CN215712553U/en active Active
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