CN209940819U

CN209940819U - Heavy metal removing device for sludge with high water content

Info

Publication number: CN209940819U
Application number: CN201920493492.0U
Authority: CN
Inventors: 刘叶; 祝建中; 吴绍凯
Original assignee: Hohai University HHU
Current assignee: Hohai University HHU
Priority date: 2019-04-12
Filing date: 2019-04-12
Publication date: 2020-01-14
Anticipated expiration: 2029-04-12

Abstract

The utility model discloses a to heavy metal remove device in high moisture content silt, including the base, install water tank, machine controller, dosing port and positive pole cylinder shell on the base, positive pole cylinder shell one end has into mud mouth, and the other end has a mud mouth, and it is located and adds the dosing port to advance mud mouth, and the outlet pipe of water tank is arranged in the dosing port department, is provided with the negative pole screw axis in the positive pole cylinder shell, and machine controller drives the negative pole screw axis and rotates, negative pole screw axis periphery a week is provided with negative pole helical blade. Compared with the prior art, the utility model discloses a to heavy metal remove device in high moisture content silt, carry out the concentrated dehydration to silt earlier, then through helical blade intensive mixing back, further improved the clearance of heavy metal pollutant in the silt, and easily control, it is not fragile, the running cost is low, does benefit to practical application.

Description

Heavy metal removing device for sludge with high water content

Technical Field

The utility model relates to a remove device of heavy metal in silt, concretely relates to remove device of heavy metal pollution's high moisture content silt.

Background

The sludge is natural clay deposited in still water or slow flowing water environment and formed through physical, biological and chemical actions, and the water content of the sludge is generally higher and is more than 40%. However, at present, due to the fact that water pollution is increasingly aggravated, sludge at the bottom of a river channel contains organic matters and some heavy metal pollutants, secondary pollution is easily caused in river channel dredging and dredging engineering, and the difficulty degree of water environment treatment is greatly increased.

Heavy metals are dissolved in the water of the sludge in the form of ions. Experiments show that the heavy metal ions can react with hydroxide ions formed after water electrolysis to generate relevant precipitates, so that the effect of stably removing heavy metal pollutants in the sludge is achieved.

Electrochemical treatment methods are widely applied to the treatment process of wastewater sludge at present, but are rarely applied to the research of removing pollutants in natural sludge, and most of the methods utilize microorganisms to degrade sludge pollutants. And the research treatment aiming at the sludge is more about the aspects of dehydration and solidification. The design of removing pollutants from the sludge by using an electrochemical method is relatively less, and the method for treating the polluted natural sludge by using the electrochemical method has the advantages of high efficiency, easiness in control and the like.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that needs to solve is not enough to above-mentioned prior art, and provides a prestressing force crimping modularization assembled basis.

In order to solve the technical problem, the utility model discloses a technical scheme is:

the utility model provides a heavy metal remove device in to high moisture content silt, includes the base, install water tank, machine controller, dosing port and positive pole cylinder shell on the base, positive pole cylinder shell one end has into mud mouth, and the other end has a mud mouth, it is located the dosing port to advance mud mouth, the outlet pipe of water tank is arranged in feeding mud mouth department, be provided with the negative pole screw axis in the positive pole cylinder shell, machine controller drives the rotation of negative pole screw axis, the peripheral a week of negative pole screw axis is provided with negative pole helical blade.

As a further preferable scheme, the distance between the cathode helical blades on the cathode helical shaft is smaller from the sludge inlet to the sludge outlet.

As a further preferable scheme, a reaction chamber shell is further arranged on the base, and the anode cylindrical shell is positioned in the reaction chamber shell.

As a further preferred scheme, a plurality of support plates are arranged in the reaction chamber shell, the support plates are arranged along the length direction of the anode cylindrical shell, holes are formed in the support plates, and the anode cylindrical shell is fixed in the holes.

Compared with the prior art, the utility model discloses a heavy metal remove device in to high moisture content silt, its advantage is, carries out concentrated dehydration to silt earlier, then through helical blade intensive mixing back, has further improved the clearance of heavy metal pollutant in the silt, and easily controls, and is not fragile, and the running cost is low, does benefit to practical application.

Drawings

FIG. 1 is a schematic external view of the present invention;

FIG. 2 is a schematic view of the internal structure of the anode cylindrical shell;

the device comprises a motor controller, a medicine feeding port, a supporting plate, a cylindrical anode shell, a reaction chamber shell, a base, a water tank, a sludge inlet, a cathode helical blade, a cathode helical shaft and a sludge outlet, wherein the motor controller is 1, the medicine feeding port is 2, the supporting plate is 3, the anode cylindrical shell is 4, the reaction chamber shell is 5, the base is 6, the water tank is 7, the sludge inlet is 8, the cathode helical blade is 9, the cathode helical.

Detailed Description

The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The utility model discloses a to heavy metal remove device in high moisture content silt, structural base 6 that includes, install water tank 7, machine controller 1, add medicine mouth 2 and positive pole cylinder shell 4 on the base 6, 4 one ends of positive pole cylinder shell have into mud mouth 8, and the other end has a mud mouth 11, it is located with medicine mouth 2 to advance mud mouth 8, the outlet pipe of water tank 7 is arranged in advancing mud mouth 8 department, be provided with negative pole screw axis 10 in the positive pole cylinder shell 4, machine controller 1 drives negative pole screw axis 10 and rotates, the peripheral a week of negative pole screw axis 10 is provided with negative pole helical blade 9.

The distance between the cathode helical blades 9 on the cathode helical shaft 10 is smaller and smaller from the sludge inlet 8 to the sludge outlet 11.

When the device starts to operate, firstly, the sludge is introduced into the chemical adding port 2, after the chemical is added into the sludge, the sludge enters the reaction chamber from the sludge inlet 8 of the device, and the introduced sludge is required to fill the space between the anode cylindrical shell 4 and the cathode spiral shaft 10. The motor controller 1 applies an electric field in the reaction chamber, so that the cylindrical shell of the reaction chamber is an anode 11, and the spiral shaft 10 and the spiral blade 9 are cathodes. The sludge is subjected to the electric field in the reaction chamber, wherein the water near the cathode is electrolyzed to form OH^-The heavy metal ions in the sludge are dissolved in the water of the sludge in the form of ions and migrate to the cathode under the action of electric field force, OH^-And the heavy metal ions are subjected to chemical reaction to generate relevant precipitates which are adsorbed on the cathode spiral shaft 10 and the cathode spiral blades 9, so that the heavy metal in the sludge is stably removed. Meanwhile, the anode cylindrical shell 11 needs to be made of an inert material or added with a protective layer to prevent the electrolytic reaction from generating abrasion. Finally, the treated sludge is discharged through a sludge outlet 11. Because the content of heavy metal in the natural sludge is low, the equipment does not need to be cleaned after each use, and only needs to clean or replace the helical blades 9, the helical shaft 10 and other parts after a period of time.

The above-mentioned embodiments further describe the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a heavy metal remove device in silt to high moisture content which characterized in that: including base (6), install water tank (7), machine controller (1), dosing mouth (2) and positive pole cylinder shell (4) on base (6), positive pole cylinder shell (4) one end has into mud mouth (8), and the other end has a mud mouth (11), it is located dosing mouth (2) to advance mud mouth (8), the outlet pipe of water tank (7) is arranged and is being advanced mud mouth (8) department, be provided with negative pole screw axis (10) in positive pole cylinder shell (4), machine controller (1) drives negative pole screw axis (10) and rotates, negative pole screw axis (10) peripheral a week is provided with negative pole helical blade (9).

2. The device for removing the heavy metals in the sludge with high water content according to the claim 1, is characterized in that: the distance between the cathode helical blades (9) on the cathode helical shaft (10) is smaller and smaller from the sludge inlet (8) to the sludge outlet (11).

3. The device for removing the heavy metals in the sludge with high water content according to the claim 1, is characterized in that: still be provided with reaction chamber shell (5) on base (6), anode cylinder shell (4) are located reaction chamber shell (5).

4. The device for removing the heavy metals in the sludge with high water content according to claim 3, is characterized in that: a plurality of supporting plates (3) are arranged in the reaction chamber shell (5), the supporting plates (3) are arranged along the length direction of the anode cylindrical shell (4), holes are formed in the supporting plates (3), and the anode cylindrical shell (4) is fixed in the holes.