CN213508644U

CN213508644U - High-efficient river course desilting system

Info

Publication number: CN213508644U
Application number: CN202021728269.9U
Authority: CN
Inventors: 林超
Original assignee: Weitai Technology Wuxi Co ltd
Current assignee: Weitai Technology Wuxi Co ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-06-22
Anticipated expiration: 2030-08-18

Abstract

The utility model provides a high-efficiency river channel dredging system, which comprises a movable operation platform, a movable operation platform and a movable operation platform, wherein the movable operation platform is arranged in a river channel area needing to clean sludge; the movable cutter suction device is arranged on the movable operation platform; the first-stage buffer reaction sedimentation tank receives the sludge which is wrung by the movable wringing and absorbing device through the conveying pump, and outputs buffer sludge and sedimentation sludge through the conveying pump; the shallow ion air flotation machine receives the buffered sludge through a conveying pump and outputs clear water and scum; the secondary buffering chemical adding pool receives the precipitated sludge through a conveying pump and conveys the precipitated sludge to a screw type squeezing separator; the screw type squeezing separator outputs squeezing separation liquid and precipitated sludge, the squeezing separation liquid is output to the secondary buffering dosing tank through the conveying pump, and the precipitated sludge is output to the primary buffering reaction sedimentation tank through the conveying pump. The utility model discloses realize that the mummification of silt efficient is dealt with, improve the perfectness and the security that the silt was handled, reduce the cost of transportation of silt and deal with the expense.

Description

High-efficient river course desilting system

Technical Field

The utility model relates to a mud renovation field especially relates to a high-efficient river course desilting system.

Background

Along with old city sewage intercepting pipe network and sewage treatment plant's construction completion, the black and odorous phenomenon of river course water has had very big improvement, but river course quality of water still does not accord with relevant standard requirement, it must clear away to persist a large amount of pollutants in the river after damming, only fundamentally thoroughly clears away the bed mud of river silt, just can guarantee that the water resumes its ecological function, otherwise will influence the ecosystem after rebuilding, the pollutant that the bed mud released influences the prosthetic final effect of water, the river can't become clear, the river course becomes black again and becomes odorous along with the release of bed mud pollutant.

With the rapid development of urban construction, urban rivers are used as important components of urban water systems, and the river channels are silted and drained unsmooth, so that the life and property safety of people can be threatened directly. The urban river silt has high water content and complex components, and most of the urban river silt contains pollutants such as heavy metals, and if the urban river silt is not well treated, the urban river silt not only can cause serious secondary pollution, but also can occupy a large amount of land resources. The urban river regulation and sludge drying place has obvious environmental benefits and social benefits, and can realize regional water quality improvement and resource recycling.

At present, the conventional dredging method is adopted in the city to intercept a river channel, construct a construction cofferdam, discharge open water in a dredging river section, manually cooperate an excavator on site to load silt into a tank car, and transport the silt to a disposal and stacking point outside the tank car. This approach has the following drawbacks:

1) as the sludge in the river channel is exposed, the bottom sludge can generate odor, pollute the surrounding environment and influence the life of residents.

2) River sludge is not dried, and the water content is high, so that a plurality of transport vehicles are used, and the transport cost is high.

3) The scattering and leakage of the sludge in the transportation process of the vehicle can cause serious pollution to urban roads and surrounding environment.

4) The river sludge which is not dried has large volume and high disposal cost.

5) The sludge is transported to a disposal and stacking point to generate secondary pollution.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a high-efficiency river channel dredging system, which comprises a movable operation platform, a movable cutter-suction device, a primary buffer reaction sedimentation tank, a shallow ion air-floating machine, a secondary buffer chemical adding tank and a screw type squeezing separator;

the movable operation platform is arranged in a river channel area where sludge needs to be cleaned;

the movable cutter suction device is arranged on the movable operation platform;

the first-stage buffer reaction sedimentation tank receives the sludge which is wrung by the movable wringing and absorbing device through the conveying pump, and outputs the buffer sludge and the sediment sludge through the conveying pump;

the shallow ion air flotation machine receives the buffered sludge through the conveying pump, and outputs clear water and scum through the conveying pump;

the secondary buffering chemical adding pool receives precipitated sludge through a conveying pump and conveys the precipitated sludge to a screw type squeezing separator through the conveying pump;

the screw type squeezing separator outputs squeezing separation liquid and precipitated sludge, the squeezing separation liquid is output to the second-level buffering dosing tank through the conveying pump, and the precipitated sludge is output to the first-level buffering reaction settling tank through the conveying pump.

Preferably, the mobile work platform is placed on both sides of or within the river at intervals.

Preferably, the distance is 2 km.

Preferably, the movable cutter suction device adopts a combination of a water pump and a pressure-resistant hose system or a cutter suction dredger.

Preferably, the suction depth of the mobile cutter suction device of the water pump and pressure-resistant hose system is 3.5 m.

Preferably, the pushing shaft in the screw type pressing separator is rotated by a screw shaft.

Preferably, multiple fixed and movable lamination sheets are arranged on the periphery of the pushing shaft.

The utility model has the advantages that: under the condition of not pumping out a river, the movable cutter suction dredging device of the small cutter suction dredging ship is used for softly pumping the sludge to a designated place on the bank in a simple mode, and the sludge can be dried, reduced and transported outwards through a sedimentation tank, a sludge drying system and a water treatment system which are arranged on the bank after going to the bank, so that the black and foul smell brought by open excavation of a pumped-out river channel and the risks of sinking and collapsing brought to the two banks of the river channel and buildings are avoided;

secondary pollution to urban environment caused by construction sites and sludge transportation is avoided;

the interference of resident life and industrial water supply is ensured;

according to different river reach conditions, the ecological dredging mode with water operation is realized, a cutter suction type dredging boat or a movable cutter suction device is mainly adopted for operation, the river body does not need to be pumped during dredging, dredging is rapid and thorough, and the ecological dredging mode is simple to operate, clean and sanitary;

the terminal process adopts a modularized squeezing separation system as a main device to realize dredging and sludge drying.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a structural diagram of the screw type press separator of the present invention;

Detailed Description

In order to make the technical solutions of the present invention better understood and make the above features, objects, and advantages of the present invention more comprehensible, the present invention is further described with reference to the following examples. The examples are intended to illustrate the invention only and are not intended to limit the scope of the invention.

As shown in fig. 1-2, the present invention comprises: the device comprises a movable operation platform, a movable cutter-suction device, a primary buffer reaction sedimentation tank, a shallow layer ion air flotation machine, a secondary buffer dosing tank and a screw type squeezing separator;

In this embodiment, the mobile work platform is preferably placed on both sides of or in the river at intervals.

In the present embodiment, the distance is preferably 2 km.

By adopting the structure, the operation platform is arranged at the river channel, the sludge drying equipment is placed on the operation platform, and the sludge drying operation can be started after the operation surface is generated by dredging. And (4) performing subsection unfolding operation according to the place where the equipment is arranged in the range of 2 kilometers per section. And after the first section is cleaned, moving to the next section for continuous operation. Thus effectively avoiding the transportation of sludge and protecting the environment; is beneficial to the high-efficiency treatment of sludge drying. The operation platform setting comprises 2 methods, one method is to select proper operation places at two sides of the river channel for placement, and the other method is to directly place the operation places in the river channel.

In this embodiment, the movable cutter suction device is preferably a combination of a water pump and a pressure-resistant hose system or a cutter suction dredger.

In the present embodiment, the suction depth of the mobile cutter suction device of the water pump and pressure-resistant hose system is preferably 3.5 m.

Set up above-mentioned structure, portable cutter suction dredging device has higher positioning accuracy and excavation accuracy, can prevent to leak to dig and overbreak, does not hinder native soil, through a water pump and one set of resistance to compression hose system, can send mud/water mixture to the appointed place on the river bank, carries out follow-up corresponding processing and deals with. The transportation hoses are combined in a module mode and can be provided with corresponding floating balls;

an accurate excavation profile can be obtained by using the cutter suction dredger.

In the present embodiment, it is preferable that the pushing shaft in the screw-type press separator is rotated by a screw shaft.

By the structure, the sludge is pumped into the squeezer by the pump in the working process of the screw type squeezer and is conveyed into the pre-concentration section by the rotating squeezer. The squeezing screw shaft rotates to drive sludge to move in the concentration section and to rub and extrude mutually. And as the root diameter of the screw press shaft is continuously increased, the volume of the concentration section is smaller and smaller, and the pressure is larger and larger, so that sludge in tail water is extruded. Tail water flows out of gaps among the pressing strips, and sludge enters a pressing section after being concentrated from the front end and is extruded; and tail water flows to a tail water collecting buffer pool from the gaps among the pressing strips for additional treatment. The rotation of screw axis promotes the loose runner ring and constantly rotates, and equipment relies on the removal between solid fixed ring and the loose runner ring to realize continuous self-cleaning process to avoid the jam problem of traditional hydroextractor ubiquitous ingeniously.

In the embodiment, preferably, the periphery of the pushing shaft is provided with multiple fixed and movable lamination sheets.

By the structure, when sludge enters the pre-concentration section, the multiple fixed and movable lamination sheets arranged on the periphery of the pushing shaft move relatively under the rotation action of the spiral pushing shaft, and water is filtered out from the lamination sheet gaps moving relatively under the action of gravity, so that rapid concentration is realized.

During use, river sludge is lifted to a first-stage buffer tank through the twisting suction, is precipitated, homogenized and conditioned, then the sludge in the buffer tank is conveyed to a shallow ion air flotation machine through a pump, and the integrated operations of dosing, coagulation reaction, coagulation, air flotation, skimming, precipitation and mud scraping are realized in the shallow ion air flotation machine. The clear effluent of the shallow ion air flotation machine is used for replenishing water in the river channel, so that the water quality of the river channel is improved.

And conveying the river sludge to a screw type squeezing separator through a pump for further squeezing and dewatering. The water content of the sludge after the squeezing treatment can reach about 70% -80%, the sludge amount after the drying is greatly reduced, the number of vehicles for outward transportation is reduced, and the sludge is treated by outward transportation. In addition, the generated squeezed separation liquid is discharged to a secondary buffer tank for precipitation, uniformity and conditioning, and sludge precipitated at the bottom enters a primary buffer tank for circular treatment, so that the recovery rate of the sludge is greatly improved.

The above-described embodiments are merely illustrative of the principles and utilities of the present patent application and are not intended to limit the present patent application. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of this patent application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of this patent application.

Claims

1. A high-efficiency river channel dredging system is characterized by comprising a movable operation platform, a movable cutter-suction device, a primary buffer reaction sedimentation tank, a shallow ion air flotation machine, a secondary buffer dosing tank and a screw type squeezing separator;

2. The high-efficiency river channel dredging system according to claim 1, wherein: the movable operation platforms are arranged on two sides of the river channel or in the river channel at intervals.

3. The high-efficiency river dredging system according to claim 2, wherein: the distance is 2 km.

4. The high-efficiency river channel dredging system according to claim 3, wherein: the movable cutter suction device adopts the combination of a water pump and a pressure-resistant hose system or a cutter suction dredger.

5. The high-efficiency river channel dredging system according to claim 4, wherein: the pumping depth of the mobile cutter suction device of the water pump and pressure-resistant hose system is 3.5 m.

6. The high-efficiency river channel dredging system according to claim 5, wherein: the pushing shaft in the screw type squeezing separator rotates by adopting a screw shaft.

7. The high-efficiency river channel dredging system of claim 6, wherein: multiple fixed and movable lamination sheets are arranged on the periphery of the pushing shaft.