CN214829560U

CN214829560U - Heavy metal ion precipitation device for landfill leachate

Info

Publication number: CN214829560U
Application number: CN202120788719.1U
Authority: CN
Inventors: 吴志伟; 陈平; 刘敏; 陈梦莹; 彭文馨; 郑丽辉; 黄伟韬; 薛文兴
Original assignee: Fujian Environmental Protection Design Institute Co ltd
Current assignee: Fujian Environmental Protection Design Institute Co ltd
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2021-11-23
Anticipated expiration: 2031-04-16

Abstract

The utility model discloses a heavy metal ion precipitation device for landfill leachate, which belongs to the technical field of landfill leachate treatment, and comprises a left precipitation space and a right precipitation space, wherein the precipitation space comprises a pretreatment cavity and a precipitation cavity, a filter screen is arranged in the middle of a collection cavity below the precipitation space, a pretreatment medicine adding device and a precipitation medicine adding device are arranged outside the pretreatment cavity and the precipitation cavity, a stirring motor is arranged in the precipitation cavity, output shafts at two ends of the stirring motor respectively drive stirrers at two sides to operate and stir through a one-way bearing, a driving gear and a driven gear, the utility model can remove harmful heavy metal ions in the landfill leachate through two steps of garbage infiltration precipitation and flocculation treatment, ensures the working efficiency through the alternate working operation of two treatment channels, wherein, when the stirring motor rotates in a reversing way, the other stirrer is automatically switched to rotate, thereby under the working mode of the alternate operation of the two precipitation spaces, the power driving system which is more convenient to control is realized through a simpler mechanism.

Description

Heavy metal ion precipitation device for landfill leachate

Technical Field

The utility model relates to a landfill leachate handles technical field, specifically is a heavy metal ion deposits device for landfill leachate.

Background

The landfill leachate is high-concentration organic landfill leachate which is formed by deducting the saturated water holding capacity of the garbage and a soil covering layer from the water contained in the garbage in a garbage landfill, rain, snow and water entering the landfill and other water and passing through the garbage layer and the soil covering layer. The heavy metal content in the landfill leachate is high, so the heavy metal ion treatment is the key point and the difficulty of the landfill leachate treatment. The coagulation adsorption method adopted by the landfill leachate treatment is usually used as the pretreatment of the landfill leachate or the advanced treatment of secondary biochemical effluent, and the method has the advantages of good treatment effect, simple and convenient operation, easy operation and management and the like.

However, the coagulation adsorption method has the problems that the reaction time is long, the landfill leachate cannot be treated continuously, and the effect of removing heavy metal ions is influenced by uneven mixing of the heavy metal capture agent and the landfill leachate; for this patent application number is CN 202020516151.3's utility model patent discloses a heavy metal ion deposits device for landfill leachate, the device is through setting up two independent filtrating passageways feeding work in turn to reach the purpose that improves work efficiency, however in the device, owing to there are two independent filtrating passageways, the device has set up two sets of independent agitating unit and has carried out stirring operation to filtrating and the liquid medicine in two independent filtrating passageways respectively in the stirring link, not only equipment manufacturing cost is high, and two sets of power drive unit independent control operation are difficult moreover.

Based on this, the utility model designs a landfill leachate is with heavy metal ion sediment device to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a landfill leachate is with heavy metal ion sediment device to solve above-mentioned technical problem.

In order to realize the purpose, the utility model provides the following technical scheme: a heavy metal ion precipitation device for landfill leachate comprises a device main box body, wherein the upper part of an inner cavity of the device main box body is divided into a left precipitation space and a right precipitation space by a vertical partition plate, the precipitation spaces comprise a pretreatment cavity and a precipitation cavity positioned below the pretreatment cavity, the bottoms of the left precipitation space and the right precipitation space are communicated with a collecting cavity together, and a filter screen is arranged in the middle of the collecting cavity;

the bottom of the pretreatment cavity is provided with a pretreatment discharge pipe communicated to the sedimentation cavity, the pretreatment discharge pipe is provided with a pretreatment discharge valve, the bottom of the sedimentation cavity is provided with a sedimentation discharge pipe communicated to the collection cavity, the sedimentation discharge pipe is provided with a sedimentation discharge valve, the bottom of the collection cavity is provided with a discharge pipe, and the discharge pipe is provided with a discharge valve;

the device comprises a main box body, a pretreatment feeding pipe, a pretreatment feeding branch pipe, a pretreatment dosing device, a precipitation dosing device and a control device, wherein the top of the main box body of the device is provided with the pretreatment feeding pipe, the pretreatment feeding pipe is connected with two pretreatment feeding branch pipes which are respectively communicated to two sides of a pretreatment cavity through a pretreatment three-way joint, the pretreatment feeding branch pipes are provided with pretreatment feeding valves, and the outer sides of the pretreatment cavity and the precipitation cavity are respectively provided with the pretreatment dosing device and the precipitation dosing device;

the bottom of erecting the baffle is provided with the motor installation cavity, the internally mounted of motor installation cavity has agitator motor, agitator motor's both ends output shaft has cup jointed the driving gear through one way bearing respectively, motor installation cavity both sides wall rotates through ball sealed bearing respectively and installs the agitator, both sides the medial extremity of agitator divide equally divide do not cup joint with driving gear meshing driven gear.

Preferably, the pretreatment dosing device and the precipitation dosing device are consistent in structure, the pretreatment dosing device comprises a dosing main pipe, the dosing main pipe is connected with two dosing branch pipes through a dosing three-way joint, the two dosing branch pipes are respectively connected with a plurality of dosing secondary branch pipes communicated to pretreatment cavities on two sides side by side, and the connecting ends of the two dosing branch pipes and the dosing three-way joint are provided with dosing valves.

Preferably, the two side walls of the main box body of the device are respectively provided with a precipitation discharge gate, and the precipitation discharge gate is positioned between the precipitation cavity and the filter screen.

Preferably, observation windows are arranged on the front side box walls of the pretreatment cavity and the sedimentation cavity on two sides.

Preferably, the bottom of the sedimentation cavity is provided with a pH value detector, and the pH value detector is connected with an electronic display arranged on the outer wall of the main box body of the device.

Compared with the prior art, utility model's beneficial effect does:

the utility model discloses heavy metal ion precipitation device for landfill leachate realizes the mixing of heavy metal catching agent liquid medicine and landfill leachate through setting up pretreatment mechanism and precipitation mechanism, and this hybrid mode is through carrying out the mixture of liquid medicine and landfill leachate in preliminary treatment chamber and precipitation chamber, and this hybrid mode can improve the degree of consistency of heavy metal catching agent liquid medicine and landfill leachate, and after the mixture that the completion of mixing got into the preliminary treatment case, evenly pour into the preliminary treatment liquid medicine through the preliminary treatment charge device, realize that the preliminary treatment liquid medicine mixes with the landfill leachate; the setting of the sedimentation chambers plays a role in further flocculating and settling the mixed liquid, wherein the stirrers in the sedimentation chambers at two sides are driven to operate by a stirring motor arranged in the middle, two ends of an output shaft of the stirring motor are respectively in transmission connection with the stirrers at two sides through two symmetrically-installed one-way bearings, and when the stirring motor rotates in a reversing way, the other stirrer is automatically switched to rotate, so that a power driving system which is more convenient to control is realized through a simpler mechanism under the working mode that two sedimentation spaces operate alternately; the flocculate is filtered and collected by the filter screen and can be cleaned and discharged after the precipitation discharge doors at the two sides are opened; the PH value in the mixed liquid of PH value detection meter monitoring to by the real-time demonstration of electronic display, conveniently adjust the PH value of mixed liquid, make things convenient for the liquid medicine to react with the heavy metal in the landfill leachate under suitable pH value for heavy metal ion's precipitation rate.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive work.

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

fig. 2 is a schematic view of the overall structure of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-device main box body, 2-vertical partition board, 3-pretreatment cavity, 4-sedimentation cavity, 5-collection cavity, 6-filter screen, 7-pretreatment discharge pipe, 8-pretreatment discharge valve, 9-sedimentation discharge pipe, 10-sedimentation discharge valve, 11-discharge pipe, 12-discharge valve, 13-pretreatment feed pipe, 14-pretreatment three-way joint, 15-pretreatment feed branch pipe, 16-pretreatment feed valve, 17-pretreatment dosing device, 171-dosing main pipe, 172-dosing three-way joint, 173-dosing branch pipe, 174-dosing secondary branch pipe, 175-dosing valve, 18-sedimentation dosing device, 19-motor installation cavity, 20-stirring motor, 21-one-way bearing, 22-driving gear, 23-stirrer, 24-driven gear, 25-precipitation discharge gate, 26-observation window, and 27-PH value detector.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by a person skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.

Referring to fig. 1-2, the utility model provides a technical solution: a heavy metal ion precipitation device for landfill leachate comprises a device main box body 1, an inner cavity of the device main box body 1 is divided into a left precipitation space and a right precipitation space by a vertical partition plate 2, the precipitation spaces comprise a pretreatment cavity 3 and a precipitation cavity 4 positioned below the pretreatment cavity 3, observation windows 26 are arranged on the front side box walls of the pretreatment cavity 3 and the precipitation cavity 4 on two sides so as to facilitate observation of internal working conditions, the bottoms of the precipitation spaces on the left side and the right side are communicated with a collection cavity 5 together, a filter screen 6 is arranged in the middle of the collection cavity 5, precipitation discharge doors 25 are respectively arranged on two side walls of the device main box body 1, the precipitation discharge doors 25 are positioned between the precipitation cavity 4 and the filter screen 6 and used for cleaning and discharging flocculent precipitation solid impurities, a PH value detector 27 is arranged at the bottom of the precipitation cavity 4, and the PH value detector 27 is connected with an electronic display arranged on the outer wall of the device main box body 1, the PH value of the mixed liquid is convenient to adjust, the liquid medicine is convenient to react with the heavy metal in the landfill leachate under a proper pH value, and the precipitation speed of the heavy metal ions is accelerated;

a pretreatment discharge pipe 7 communicated to the sedimentation chamber 4 is arranged at the bottom of the pretreatment chamber 3, a pretreatment discharge valve 8 is arranged on the pretreatment discharge pipe 7, a precipitation discharge pipe 9 communicated to the collection chamber 5 is arranged at the bottom of the sedimentation chamber 4, a precipitation discharge valve 10 is arranged on the precipitation discharge pipe 9, a discharge pipe 11 is arranged at the bottom of the collection chamber 5, and a discharge valve 12 is arranged on the discharge pipe 11;

a pretreatment feeding pipe 13 is arranged at the top of the device main box body 1, the pretreatment feeding pipe 13 is connected with two pretreatment feeding branch pipes 15 which are respectively communicated to the pretreatment cavities 3 at two sides through a pretreatment three-way joint 14, a pretreatment feeding valve 16 is arranged on each pretreatment feeding branch pipe 15, and a pretreatment dosing device 17 and a precipitation dosing device 18 are respectively arranged at the outer sides of the pretreatment cavity 3 and the precipitation cavity 4; the pretreatment dosing device 17 and the precipitation dosing device 18 have the same structure, the pretreatment dosing device 17 comprises a dosing main pipe 171, the dosing main pipe 171 is connected with two dosing branch pipes 173 through a dosing three-way joint 172, the two dosing branch pipes 173 are respectively connected with a plurality of dosing secondary branch pipes 174 communicated to the pretreatment cavities 3 on two sides side by side, and the connecting ends of the two dosing branch pipes 173 and the dosing three-way joint 172 are provided with dosing valves 175;

the bottom of the vertical partition plate 2 is provided with a motor installation cavity 19, the inside of the motor installation cavity 19 is provided with a stirring motor 20, output shafts at two ends of the stirring motor 20 are respectively sleeved with a driving gear 22 through a one-way bearing 21, two side walls of the motor installation cavity 19 are respectively rotatably provided with a stirrer 23 through a ball sealing bearing, and the inner side ends of the stirrers 23 at two sides are respectively sleeved with a driven gear 24 which is in meshing transmission with the driving gear 22.

Working principle embodiment:

opening one of the pretreatment feed valves 16 on the pretreatment feed branch pipes 15 at two sides, passing the garbage penetrating fluid to be treated through the pretreatment feed pipe 13, the pretreatment three-way joint 14 and the pretreatment feed branch pipe 15 at the opened side in the corresponding pretreatment cavity 3 at one side in sequence, simultaneously introducing pretreatment liquid medicine into the pretreatment cavity 3 at the current side through the pretreatment medicine adding device 17, when the pretreatment liquid medicine is added, opening the medicine adding valve 175 at the current side in the pretreatment medicine adding device 17, closing the medicine adding valve 175 at the other side, so that the pretreatment liquid medicine is uniformly introduced into the pretreatment cavity 3 at the current side through the medicine adding branch pipes 173 at the current side through the medicine adding secondary branch pipes 174 for pretreatment mixing, and because the liquid medicine and the penetrating fluid need a certain standing time for reaction, in order to improve the working efficiency and ensure the effective working time, when the pretreatment reaction is carried out in the current side 3, closing the pretreatment feed valve 16 and the dosing valve 175 on the current side, opening the pretreatment feed valve 16 and the pretreatment feed branch pipe 15 on the other side, namely introducing penetrating fluid and pretreatment liquid medicine into the pretreatment cavity 3 on the other side of the net, carrying out pretreatment reaction on the mixed liquid in the pretreatment cavities 3 on the two sides in sequence, opening the pretreatment discharge valve 8 on the pretreatment side after the pretreatment standing time is up, discharging the pretreated mixed liquid in the pretreatment cavity 3 on the side into the precipitation cavity 4 on the side, adding precipitation liquid medicine into the precipitation cavity 4 on the side through the precipitation dosing device 18, wherein the dosing mode of the precipitation dosing device 18 is similar to that of the pretreatment dosing device 17, only dosing is carried out on the side, and simultaneously, the stirring motor 20 is started, and drives the stirrer 23 on the side to stir through the meshing transmission of the driving gear 22 and the driven gear 24 to fully stir the mixed liquid so as to accelerate the reaction speed, after the pretreatment liquid medicine in the pretreatment cavity 3 at the other side reaches the same pretreatment standing time, the pretreatment discharge valve 8 is opened according to the method and then the liquid medicine is discharged into the precipitation cavity 4 at the other side, and the liquid medicine is precipitated and then stirred, reacted and precipitated, because the two ends of the output shaft of the stirring motor 20 are respectively in transmission connection with the stirrers 23 at the two sides through the two symmetrically arranged one-way bearings 21, when the stirring motor 20 rotates in a reversing way, the other stirrer 23 is automatically switched to work, after the stirring at the first side is finished, the stirring motor 20 needs to be controlled to rotate reversely, the stirrer 23 at the other side can be started to stir, the stirrer 23 at the first side automatically stops, the observation windows 26 are arranged on the pretreatment cavities 3 at the two sides and the wall at the front side of the precipitation cavity 4, so as to facilitate the observation of the internal working condition, the PH value in the mixed liquid is monitored by the PH value detector 27 and is displayed by an electronic display in real time, the PH value of the mixed liquid is conveniently adjusted, the liquid medicine is convenient to react with heavy metals in the garbage leachate under a proper pH value, the sedimentation speed of heavy metal ions is accelerated, then after flocculation and sedimentation are completed in advance, the sedimentation and discharge valve 10 on the side sedimentation and discharge pipe 9 can be opened, reactants of solid-liquid separation are discharged into the collection cavity 5, solid impurities can be filtered and separated due to the fact that the filter screen 6 is arranged in the middle of the collection cavity 5, and then the filtered and treated penetrating liquid is collected into the collection cavity 5, the same is achieved, the reactants in the other side sedimentation cavity 4 are filtered according to a previous side mode and collected into the collection cavity 5 after flocculation and sedimentation is completed, the liquid impurities can be discharged after the discharge valve 12 on the discharge pipe 11 is opened, when the work of the solid impurities retained on the filter screen 6 is stopped, the liquid medicine can be cleaned and discharged by opening the sedimentation doors 25 on two sides.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; the term "connected" may refer to a direct connection, an indirect connection through an intermediate, a connection between two elements or an interaction relationship between two elements, and unless otherwise specifically defined, the term should be understood as having a specific meaning in the present application by those skilled in the art.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a landfill leachate is with heavy metal ion precipitation device which characterized in that: the device comprises a device main box body (1), wherein the upper part of an inner cavity of the device main box body (1) is divided into a left precipitation space and a right precipitation space by a vertical partition plate (2), the precipitation spaces comprise a pretreatment cavity (3) and a precipitation cavity (4) positioned below the pretreatment cavity (3), the bottoms of the precipitation spaces on the left side and the right side are communicated to a collecting cavity (5) together, and a filter screen (6) is arranged in the middle of the collecting cavity (5);

a pretreatment discharge pipe (7) communicated to the sedimentation chamber (4) is arranged at the bottom of the pretreatment chamber (3), a pretreatment discharge valve (8) is arranged on the pretreatment discharge pipe (7), a sedimentation discharge pipe (9) communicated to the collection chamber (5) is arranged at the bottom of the sedimentation chamber (4), a sedimentation discharge valve (10) is arranged on the sedimentation discharge pipe (9), a discharge pipe (11) is arranged at the bottom of the collection chamber (5), and a discharge valve (12) is arranged on the discharge pipe (11);

a pretreatment feeding pipe (13) is arranged at the top of the device main box body (1), the pretreatment feeding pipe (13) is connected with two pretreatment feeding branch pipes (15) which are respectively communicated to the two sides of the pretreatment cavity (3) through a pretreatment three-way joint (14), a pretreatment feeding valve (16) is arranged on each pretreatment feeding branch pipe (15), and a pretreatment dosing device (17) and a precipitation dosing device (18) are respectively arranged at the outer sides of the pretreatment cavity (3) and the precipitation cavity (4);

erect the bottom of baffle (2) and be provided with motor installation cavity (19), the internally mounted of motor installation cavity (19) has agitator motor (20), driving gear (22) have been cup jointed through one-way bearing (21) respectively to the both ends output shaft of agitator motor (20), motor installation cavity (19) both sides wall rotates through ball sealed bearing respectively and installs agitator (23), both sides the medial extremity of agitator (23) divide equally divide do not cup joint with driving gear (22) meshing driven gear (24).

2. The heavy metal ion precipitation device for landfill leachate according to claim 1, wherein: the pretreatment dosing device (17) is consistent with the precipitation dosing device (18) in structure, the pretreatment dosing device (17) comprises a dosing main pipe (171), the dosing main pipe (171) is connected with two dosing branch pipes (173) through a dosing three-way joint (172), the dosing branch pipes (173) are respectively connected with a plurality of dosing secondary branch pipes (174) which are communicated to the pretreatment cavities (3) on two sides side by side, and the connection ends of the dosing branch pipes (173) and the dosing three-way joint (172) are provided with dosing valves (175).

3. The heavy metal ion precipitation device for landfill leachate according to claim 1, wherein: the device main tank body (1) both sides wall is provided with sediment row bin gate (25) respectively, sediment row bin gate (25) are located between sedimentation chamber (4) and filter screen (6).

4. The heavy metal ion precipitation device for landfill leachate according to claim 1, wherein: and observation windows (26) are arranged on the front side box walls of the pretreatment cavity (3) and the sedimentation cavity (4) on the two sides.

5. The heavy metal ion precipitation device for landfill leachate according to claim 1, wherein: the bottom of sedimentation chamber (4) is provided with pH value detection meter (27), pH value detection meter (27) are connected with install in the electronic display of device main tank body (1) outer wall.