CN108946989B

CN108946989B - Pretreatment device beneficial to coking wastewater treatment

Info

Publication number: CN108946989B
Application number: CN201810810269.4A
Authority: CN
Inventors: 李绍明; 李波; 余仁生; 李斌
Original assignee: Pingxiang Huaxing Environmental Protection Engineering Technology Co ltd
Current assignee: Pingxiang Huaxing Environmental Protection Engineering Technology Co ltd
Priority date: 2018-07-23
Filing date: 2018-07-23
Publication date: 2021-04-16
Anticipated expiration: 2038-07-23
Also published as: CN108946989A

Abstract

The invention discloses a pretreatment device beneficial to coking wastewater treatment, and relates to the technical field of wastewater treatment. The invention comprises a device shell, wherein a pretreatment bin is fixedly connected to the surface of the device shell, a filter box is communicated with the surface of the pretreatment bin, a drain pipe and a water inlet pipe respectively penetrate through the surface of the pretreatment bin, one end of the drain pipe and one end of the water inlet pipe both extend into the device shell, a speed reduction is fixedly connected to the surface of the pretreatment bin, and a self-suction type sewage pump is fixedly connected to the surface of the pretreatment bin.

Description

Pretreatment device beneficial to coking wastewater treatment

Technical Field

The invention relates to the technical field of wastewater treatment, in particular to a pretreatment device beneficial to coking wastewater treatment.

Background

The coking industry has been rapidly developed in recent years, and the problem of treating the coking wastewater is gradually difficult to treat the sewage. The coking wastewater is characterized by containing a certain amount of heavy oil and light oil, having higher content of harmful substances such as cyanide, phenol, ammonia nitrogen and the like, high concentration of pollutants, high chromaticity, high toxicity and unstable property, can be discharged after special treatment, and mainly comes from production water and steam condensation wastewater in the production process of coke oven gas primary cooling and coking. The wastewater generated in the processes of coal coking, coal gas purification, chemical product recovery and chemical product refining is typical toxic refractory organic wastewater.

Coking wastewater carries out the preliminary treatment before the coking wastewater treatment link and helps improving coking wastewater treatment effect, and the COD is stable up to standard in hardly guaranteeing coking wastewater to combine together with the activated sludge method in the conventional preliminary treatment of present coking wastewater, needs a reasonable preliminary treatment air supporting system urgently to wait, carries out effectual filtration with the indissolvable thing in coking wastewater, optimizes coking wastewater pretreatment link to improve coking wastewater treatment effect.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a pretreatment device beneficial to coking wastewater treatment, which is characterized in that floating objects in the coking wastewater can be automatically gathered to the center of a shell of the device through the mutual matching of a rotary base and a rotary shifting piece, so that the uniform cleaning of a self-suction sewage pump is facilitated, and the problem of low efficiency of the existing air flotation machine in cleaning residues is solved; the central liquid level sensor and the peripheral liquid level sensor are matched with each other, so that the height of the central liquid level in the shell of the device can be detected in real time, the liquid level is always in the control range of the rotary shifting piece, the liquid level at the edge of the inner part of the shell of the device and the central liquid level can be kept in a certain height difference, the collection efficiency of floaters is further improved, and the problem that the liquid level is unstable when the device collects the floaters is solved; the annular injector head can ensure that the dissolved air water conveyed by the dissolved air pump is uniformly dispersed in the device shell, the probability of contacting with floaters in waste water is increased, the efficiency of waste water treatment is further improved, and the problem that the dissolved air water injection of the existing air floatation machine is not uniform is solved.

In order to achieve the purpose, the invention is realized by the following technical scheme: a pretreatment device beneficial to coking wastewater treatment comprises a device shell, wherein a pretreatment bin is fixedly connected to one surface of the device shell, a filter box is communicated with the surface of the pretreatment bin, a water drainage pipe and a water inlet pipe respectively penetrate through the surface of the pretreatment bin, and one end of each of the water drainage pipe and the water inlet pipe extends into the device shell;

a speed reducer is fixedly connected to the surface of the pretreatment bin;

and a self-suction sewage pump is fixedly connected to the surface of the pretreatment bin.

Further, from inhaling formula sewage pump output shaft one end transmission and being connected with the transmission shaft, transmission shaft one end transmission is connected with the roating seat, a roating seat fixed surface is connected with six arc blades, roating seat axle center department is connected with device shell internal surface rotation.

Furthermore, a collection bin is communicated with the surface of the pretreatment bin, a direct current motor is fixedly connected to the peripheral side face of the collection bin, a rotary shifting piece is fixedly connected to one end of an output shaft of the direct current motor, and the axis of the rotary shifting piece is rotatably connected with the surface of the collection bin.

Furthermore, a central liquid level sensor is fixedly connected to one surface of the collection bin, and a peripheral liquid level sensor is fixedly connected to the inner surface of the device shell.

Further, it is inside to extend to the collection storehouse from inhaling formula sewage pump water inlet one end, it has the dross conveyer pipe to inhale formula sewage pump delivery port intercommunication from, dross conveyer pipe one end and rose box intercommunication.

Further, a surface of the filter box is penetrated with a backflow pipe, one end of the backflow pipe penetrates through the pretreatment bin and extends to the inside of the pretreatment bin, one end of the backflow pipe, which is located inside the pretreatment bin, is communicated with a dissolved air pump, one surface of the dissolved air pump is fixedly connected with the inner surface of the pretreatment bin, a water outlet of the dissolved air pump is communicated with a water conveying pipe, one end of the water conveying pipe penetrates through the pretreatment bin and extends to the inside of the device shell, one end of the water conveying pipe, which is located inside the device shell, is communicated with the annular spraying head, and the circumferential side surface of the annular spraying head is fixedly connected with the inner surface of the device shell.

Furthermore, the inside three-layer filter screen that is provided with of rose box, rose box one surface rotates and is connected with sealed hatch door, a fixed surface of sealed hatch door is connected with the handle.

Furthermore, four ground feet are fixedly connected to one surface of the device shell.

The invention has the following beneficial effects:

1. this preprocessing device that is favorable to coking wastewater treatment through mutually supporting of rotating base and rotatory plectrum for floater in the coking wastewater can be automatic to device shell center gathering, is favorable to inhaling the formula sewage pump and unifies the clearance, has the advantage of automatic gathering floater in the coking wastewater.

2. This preprocessing device that is favorable to coking wastewater treatment, through central level sensor and peripheral level sensor's mutually supporting, the height of the inside central liquid level of detection device shell can be in real time, makes the liquid level be in the control range of rotatory plectrum all the time to can keep the inside marginal liquid level of device shell and central liquid level to be in certain difference in height, further improve the collection efficiency of floater, have waste water treatment dynamic balance's advantage.

3. This preprocessing device that is favorable to coking wastewater treatment, annular injector head can make the even dispersion of dissolved air water that dissolved air pump carried at device shell inside, increase the probability with the floater contact in the waste water, further improve wastewater treatment's efficiency, have the advantage of even injection dissolved air water.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

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 introduced below, and it is obvious that the drawings in the following description 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 the drawings without creative efforts.

FIG. 1 is a schematic diagram of a pretreatment apparatus for treating coking wastewater;

FIG. 2 is a schematic view of the internal structure of the device housing;

FIG. 3 is a schematic view of the internal structure of FIG. 1;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is a schematic diagram of a pretreatment bin;

FIG. 6 is a schematic view of the interior of FIG. 5;

FIG. 7 is a schematic view of the structure of the filtration tank;

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

in the figure: 1-device shell, 2-pretreatment bin, 3-filter box, 4-drain pipe, 5-water inlet pipe, 6-speed reducer, 7-self-suction sewage pump, 8-transmission shaft, 9-rotary seat, 10-arc blade, 11-peripheral liquid level sensor, 12-dissolved air water delivery pipe, 13-annular spray head, 14-collection bin, 15-direct current motor, 16-rotary plectrum, 17-central liquid level sensor, 18-scum delivery pipe, 19-dissolved air pump, 20-backflow pipe, 101-ground foot, 301-filter screen, 302-sealed cabin door, 303-handle.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "open", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", "one surface", "one end surface", "one side surface", etc. indicate the orientation or positional relationship, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1, the present invention provides a technical solution: the utility model provides a be favorable to coking wastewater treatment's preprocessing device, including

device shell

1, 1 fixed surface in device shell is connected with

preliminary treatment storehouse

2, 2 surface intercommunications in preliminary treatment storehouse have

rose box

3, 2 surfaces in preliminary treatment storehouse run through drain pipe 4 and inlet tube 5 respectively, external water pump and valve respectively of drain pipe 4 and inlet tube 5, carry out regulation control by the device controller,

drain pipe

4 and 5 one ends of inlet tube all extend into the inside of device shell 1, the length that drain pipe 4 is located 1 inside of device shell is 1500mm, the length that inlet tube 5 is located 1 inside of device shell is 100 mm.

One surface of the pretreatment bin 2 is fixedly connected with a speed reducer 6, and the speed reduction ratio of the speed reducer is 60 to 1.

A self-suction sewage pump 7 is fixedly connected to one surface of the pretreatment bin 2, and the self-suction sewage pump 7 is a stainless steel self-suction pump of 25FX-8 model.

Wherein, four ground feet 101 are fixedly connected with one surface of the device shell 1.

As shown in fig. 2, one end of an output shaft of the self-suction sewage pump 7 is in transmission connection with a transmission shaft 8, two ends of the transmission shaft 8 are both in an inner hexagonal connection structure, one end of the transmission shaft 8 is in transmission connection with a rotating seat 9, one surface of the rotating seat 9 is fixedly connected with six arc-shaped blades 10, and the axis of the rotating seat 9 is rotatably connected with the inner surface of the device shell 1.

Wherein, a central liquid level sensor 17 is fixedly connected with one surface of the collection bin 14, a peripheral liquid level sensor 11 is fixedly connected with the inner surface of the device shell 1, the central liquid level sensor 17 and the peripheral liquid level sensor 11 are LGFQ-1 type floating ball liquid level sensors, the measurable length of the central liquid level sensor 17 is 400mm, the measurable length of the peripheral liquid level sensor 11 is 1200mm, the peripheral liquid level sensor 11 is used for detecting the edge liquid level height inside the device shell 1, the central liquid level sensor 17 is used for detecting the liquid level height in the center inside the device shell 1, the liquid level height data detected by the peripheral liquid level sensor 11 and the central liquid level sensor 17 are transmitted to a controller of the device, the controller controls the liquid level height inside the device shell 1 through the opening and closing of the drain pipe 4 and the water inlet pipe 5, and controls the flow rate of water flow inside the device shell, so that the liquid level at the inner edge of the device shell 1 and the liquid level at the center always keep a height difference of about 50 mm.

As shown in fig. 3-6, a collecting bin 14 is communicated with one surface of the pretreatment bin 2, a direct current motor 15 is fixedly connected to the peripheral side of the collecting bin 14, a polyethylene polypropylene composite waterproof layer is coated on the peripheral side of the direct current motor 15, a rotary shifting piece 16 is fixedly connected to one end of an output shaft of the direct current motor 15, and the axis of the rotary shifting piece 16 is rotatably connected to one surface of the collecting bin 14.

Wherein, the water inlet end of the self-suction sewage pump 7 extends to the interior of the collection bin 14, the water outlet of the self-suction sewage pump 7 is communicated with a scum conveying pipe 18, and one end of the scum conveying pipe 18 is communicated with the filter tank 3.

Wherein, a backflow pipe 20 has been run through on a surface of rose box 3, backflow pipe 20 one end runs through preliminary treatment storehouse 2 and extends to the inside in preliminary treatment storehouse 2, backflow pipe 20 is located the inside one end intercommunication in preliminary treatment storehouse 2 has a dissolved air pump 19, dissolved air pump 19 is 32EDQS15S model dissolved air pump, a surface and the 2 internal surface fixed connection in preliminary treatment storehouse of dissolved air pump 19, dissolved air pump 19 delivery port intercommunication has a dissolved air water conveyer pipe 12, dissolved air water conveyer pipe 12 one end runs through preliminary treatment storehouse 2 and extends to the inside of device shell 1, dissolved air water conveyer pipe 12 is located the inside one end intercommunication of device shell 1 and has annular injector head 13, sixty orifice has been seted up on annular injector head 13 one surface, annular injector head 13 week side and device shell 1 internal surface fixed connection.

As shown in fig. 7, three layers of filter screens 301 are disposed inside the filter box 3, a sealing door 302 is rotatably connected to one surface of the filter box 3, a sealing strip is disposed on one side of the sealing door 302 close to the filter box 3, a handle 303 is fixedly connected to one surface of the sealing door 302, the scum conveying pipe 18 is located above the filter screens 301, and the return pipe 2 penetrates through the filter screens 301 and extends to the bottom of the filter screens.

The working principle of the embodiment is as follows: coking wastewater enters the device shell 1 through the water inlet pipe 5, the speed reducer 6 works, the rotary seat 9 is driven to rotate through the transmission shaft 8, the arc-shaped blade stirs the wastewater to enable the wastewater to rotate in the device shell 1, the self-suction sewage pump 7 works to convey the coking wastewater to the filter box 3 through the scum conveying pipe 18 for filtering, the dissolved air pump 19 works to convey the filtered wastewater into the dissolved air water conveying pipe 12 through the return pipe 20, the dissolved air wastewater is re-sprayed into the device shell 1 through the annular spraying head 13, the dissolved air wastewater is attached with floaters to enable the floaters to rise to the liquid level, the wastewater rotates to gather the floaters to be close to the collection bin 14, the direct current motor 15 works to drive the rotary poking piece 16, the rotary poking piece 16 pokes the gathered floaters into the collection bin 14 through rotation, and the floaters are sucked and conveyed to, accomplish once filtering cycle, discharge through drain pipe 4 after the filtration is accomplished, the valve switch of controller control drain pipe 4 and inlet tube 5 makes the inside liquid level of device shell 1 be in the vertical range of rotatory plectrum 16 all the time through dynamic regulation and control, and when the device stop work, accessible handle 303 opens sealed hatch door, clears up the residue of the inside gathering of rose box 3.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a be favorable to coking wastewater treatment's preprocessing device which characterized in that: the device comprises a device shell (1), wherein the top surface of the device shell (1) is fixedly connected with a pretreatment bin (2), the pretreatment bin (2) is communicated with a filter box (3), the pretreatment bin (2) respectively penetrates through a drain pipe (4) and a water inlet pipe (5), and one end of each of the drain pipe (4) and the water inlet pipe (5) extends into the device shell (1); the top surface of the pretreatment bin (2) is fixedly connected with a speed reducer (6); the top surface of the pretreatment bin (2) is fixedly connected with a self-suction sewage pump (7); the self-suction sewage pump (7) is characterized in that one end of an output shaft is in transmission connection with a transmission shaft (8), one end of the transmission shaft (8) is in transmission connection with a rotating seat (9), the rotating seat (9) is fixedly connected with a plurality of arc-shaped blades (10), the axis of the rotating seat (9) is in rotational connection with the bottom surface of a device shell (1), the bottom surface of a pretreatment bin (2) is communicated with a collection bin (14), the peripheral side surface of the collection bin (14) is fixedly connected with a direct current motor (15), one end of an output shaft of the direct current motor (15) is fixedly connected with a rotary stirring sheet (16), the axis of the rotary stirring sheet (16) is in surface rotation connection with the collection bin (14), the surface of the collection bin (14) is fixedly connected with a central liquid level sensor (17), and the inner surface of the device, the liquid level height data detected by the peripheral liquid level sensor (11) and the central liquid level sensor (17) are transmitted to a controller of the device, the controller controls the liquid height and the flow rate in the shell of the device, and the liquid level at the edge of the inner part of the shell (1) and the central liquid level are kept in a certain height difference, so that the liquid level is always in the control range of the rotary shifting piece.

2. The pretreatment device for coking wastewater treatment according to claim 1, wherein one end of the water inlet of the self-priming sewage pump (7) extends to the inside of the collection bin (14), the water outlet of the self-priming sewage pump (7) is communicated with a scum conveying pipe (18), and one end of the scum conveying pipe (18) is communicated with the filter tank (3).

3. A pretreatment apparatus for facilitating treatment of wastewater from coking according to claim 1, the top surface of the filter tank (3) is connected with a return pipe (20) in a penetrating way, one end of the return pipe (20) is communicated with the pretreatment bin (2) and extends to the interior of the pretreatment bin (2), one end of the return pipe (20) positioned in the pretreatment bin (2) is communicated with a dissolved air pump (19), the dissolved air pump (19) is fixedly connected with the inner surface of the pretreatment bin (2), the water outlet of the dissolved air pump (19) is communicated with a dissolved air water conveying pipe (12), one end of the dissolved gas water delivery pipe (12) is communicated with the pretreatment bin (2) and extends to the interior of the device shell (1), one end of the dissolved gas water delivery pipe (12) positioned in the device shell (1) is communicated with an annular spray head (13), the circumferential side surface of the annular spray head (13) is fixedly connected with the inner surface of the device shell (1).

4. A pretreatment device for coking wastewater treatment according to claim 1, characterized in that a plurality of filter screens (301) are arranged inside the filter box (3), a sealing cabin door (302) is rotatably connected to the side surface of the filter box (3), and a handle (303) is fixedly connected to one surface of the sealing cabin door (302).

5. A pretreatment device for facilitating coking wastewater treatment according to claim 1, characterized in that a plurality of anchor feet (101) are fixedly connected to a surface of the device housing (1).