CN211896434U - Industrial wastewater treatment equipment - Google Patents

Abstract

The utility model relates to an industrial wastewater treatment equipment. Comprises a circulating filter device and a depth filter device; the circulating filter device comprises a water collecting tank, a filter tank and a buffer tank, wherein a medicine adding port is formed in the top plate of the filter tank, and a drain pipe is formed in the side wall of the buffer tank; the filter assembly comprises a water pump, a plurality of filter bags, a water supply pipe and a return pipe, wherein each water distribution pipe is communicated with each filter bag; the depth filtering device comprises a tube shell, wherein a washing pipe is arranged on the top wall in the middle of the tube shell, a medicine adding connecting pipe is arranged on the top wall at the rear part, a sewage discharge pipe is arranged on the bottom wall at the middle part, a discharge pipe is arranged on the bottom wall at the front part, a water inlet pipe is arranged on the side wall at the rear part, a water outlet pipe is arranged on the side wall at the front part, and a filtering component is arranged in the; also comprises a connecting pipeline with a delivery pump. The utility model discloses compact structure, realized circulating filtration and the advanced filtration of waste water and handled.

Description

Industrial wastewater treatment equipment

Technical Field

The utility model belongs to the technical field of waste water treatment equipment, especially, relate to an industrial wastewater treatment equipment.

Background

The industrial wastewater comprises production wastewater, production sewage and cooling water, and refers to wastewater and waste liquid generated in the industrial production process, wherein the wastewater and the waste liquid contain industrial production materials, intermediate products, byproducts and pollutants generated in the production process, which are lost along with water. The industrial wastewater has various types and complex components. For example, the waste water from electrolytic salt industry contains mercury, the waste water from heavy metal smelting industry contains various metals such as lead and cadmium, the waste water from electroplating industry contains various heavy metals such as cyanide and chromium, the waste water from petroleum refining industry contains phenol, and the waste water from pesticide manufacturing industry contains various pesticides. Because industrial wastewater contains various toxic substances and pollutes the environment, the environment is harmful to human health, so that the industrial wastewater is developed to be comprehensively utilized and turn the harmful into the beneficial, and can be discharged after being treated by adopting corresponding purification measures according to the components and the concentration of pollutants in the wastewater.

The choice of wastewater treatment method depends on the nature, composition, state and water quality requirements of the pollutants in the wastewater. The general methods for treating wastewater can be roughly classified into physical methods, chemical methods and biological methods. Wherein, the physical method refers to the physical action of treating, separating and recovering the pollutants in the wastewater, for example, removing suspended particles with relative density more than 1 in the water by using a precipitation method and simultaneously recovering the particles; the filtration method can remove suspended particles and the like in water; chemical processes refer to the recovery of soluble waste or colloidal substances using chemical or physicochemical reactions, for example neutralization processes for neutralizing acidic or alkaline waste water; the extraction method utilizes the distribution of soluble wastes with different solubilities in two phases to recover phenols, heavy metals and the like; the redox method is used for removing reductive or oxidative pollutants in the wastewater and killing pathogenic bacteria and the like in the natural water body; the biological method is to treat organic matters in wastewater by using biochemical action of microorganisms, such as a biological filtration method and an activated sludge method, so as to treat domestic sewage or organic production wastewater, convert the organic matters into inorganic salts and purify the inorganic salts.

In the initial stage of wastewater treatment and the whole treatment process, the wastewater needs to be filtered to remove the particulate matter. The existing treatment equipment can only realize filtration treatment with single function, so that particulate matters in the wastewater cannot be sufficiently removed, which brings burden to the subsequent advanced wastewater treatment link and easily causes various problems such as catalyst failure and the like. Therefore, the treatment equipment needs to be structurally optimized and designed, and the filtering treatment capacity is improved.

SUMMERY OF THE UTILITY MODEL

The utility model provides an industrial wastewater treatment equipment which has compact structure, realizes the circulating filtration treatment of wastewater and the deep filtration treatment, fully removes the particulate matter component in the wastewater, and avoids the particulate matter component to remain the problem that leads to for the technical problem who exists among the solution known technology.

The utility model discloses a solve the technical scheme that technical problem that exists among the well-known technique took and be: an industrial wastewater treatment device comprises a circulating filter device and a depth filter device; the circulating filter device comprises a water collecting tank, a filter tank and a buffer tank, wherein the filter tank and the buffer tank are communicated through a communication port, a medicine feeding port is formed in a top plate of the filter tank, and a drain pipe is formed in the side wall of the buffer tank; the filter assembly comprises a water pump arranged in the water collecting tank, a plurality of filter bags arranged on a top plate of the filter tank, a water supply pipe which is connected with an outlet of the water pump and is provided with a plurality of water distribution pipes, each water distribution pipe is communicated with each filter bag, the filter assembly also comprises a return pipe connected with an inlet of the water pump, and the end part of the return pipe extends to the inner cavity of the buffer tank; the depth filtering device comprises a tube shell with a front end seal and a rear end provided with a flange plate, a blind plate is arranged on the flange plate, a flushing pipe is arranged on the top wall in the middle of the tube shell, a dosing connecting pipe is arranged on the top wall at the rear part, a drain pipe is arranged on the bottom wall at the middle part, a drain pipe is arranged on the bottom wall at the front part, a water inlet pipe is arranged on the side wall at the rear part, a water outlet pipe is arranged on the side wall at the front part, and a filtering component; the water-saving device also comprises a connecting pipeline with a delivery pump, wherein one end of the connecting pipeline is in butt joint with the water discharge pipe, and the other end of the connecting pipeline is in butt joint with the water inlet pipe.

The utility model has the advantages that: the utility model provides an industrial wastewater treatment equipment that structural design is compact, compare with current treatment facility, the utility model discloses in through the circulating filtration device that will integrate and the deep filtration device of integration make up, make whole equipment possess the circulating filtration processing function and the deep filtration processing function to waste water, above-mentioned two kinds of filtering capability apply for waste water after, make particulate matter impurity and the particulate matter impurity etc. that produce in the processing procedure at waste water treatment initial stage fully get rid of, make waste water clarification, just particulate matter impurity's influence (leading to its inefficacy like the porous structure that blocks up the catalyst) can not appear when subsequent further processing (like catalytic oxidation handles) like this. Whole treatment facility compares with current fixed processing facility, has the convenience of arranging and using the aspect, wholly can remove, and it is also more convenient to wash and the consumptive material is changed, has promoted waste water treatment's efficiency, has guaranteed waste water treatment's effect.

Preferably: the filter bag comprises a shell positioned above the top plate of the filter box and a filter bag body suspended below the top plate of the filter box, and each water distribution pipe is in butt joint connection with an interface on each shell.

Preferably: the front end of the water return pipe penetrates through the side wall which is abutted against by the filter box and the buffer box, the rear end of the water return pipe penetrates through the side wall which is abutted against by the water collecting tank and the filter box, and the middle part of the water return pipe is positioned at the bottom of the inner cavity of the filter box.

Preferably: both the filtering box and the buffer box are composed of an inner frame positioned inside and box plates positioned at the bottom of the inner frame and around, the top plate of the filtering box is detachably connected with the inner frame of the filtering box, and the detachable top plate of the buffer box is arranged on the inner frame of the buffer box.

Preferably: an access door is further arranged on the top plate of the filter box, and an observation port is further arranged on the top plate of the buffer box.

Preferably: the water pump comprises a main water pump and a slave water pump, the rear end of the water delivery pipe is Y-shaped and branched and is respectively connected to the outlets of the main water pump and the slave water pump, the rear end of the return pipe is connected to the inlet of the main water pump, a water suction pipe is arranged at the inlet of the slave water pump, and the water suction pipe is positioned at the bottom of the inner cavity of the water collecting tank.

Preferably: the filtering component comprises a fixed supporting plate which is positioned at the front part of the inner cavity of the tube shell and is provided with a water hole, and the edge of the fixed supporting plate is fixed with the inner wall of the tube shell in a sealing way; the filter element comprises a fixed support plate and a movable support plate, wherein the fixed support plate and the movable support plate are arranged on the rear portion of an inner cavity of a tube shell, a central rod is arranged between the middle portions of the fixed support plate and the movable support plate, the front portion of the filter element is provided with a plastic sleeve, the filter element is provided with a cavity, the central rod is arranged in the cavity, and the front end of the plastic sleeve abuts against the fixed support plate.

Preferably: the center of the fixed supporting plate is provided with a threaded hole, the center of the movable supporting plate is provided with a connecting hole, the front end of the center rod is provided with a threaded part and the threaded part is positioned in the threaded hole of the fixed supporting plate, and the rear end of the center rod is provided with a threaded part and the threaded part is positioned in the threaded hole of the movable supporting plate and locked by a nut.

Preferably: the shell of the filtering device is supported by a front group of brackets and a rear group of brackets.

Drawings

Fig. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic view showing an external structure of the circulation filter device of FIG. 1;

FIG. 3 is a schematic view showing the internal structure of the circulating filter apparatus of FIG. 1;

FIG. 4 is a schematic view of the filter assembly of FIG. 3;

FIG. 5 is a schematic view of the external structure of the depth filter of FIG. 1;

fig. 6 is a schematic cross-sectional view of the depth filtration device of fig. 1.

In the figure: 1. a circulating filtration device; 1-1, a water collecting tank; 1-2, a filter box; 1-3, a buffer tank; 1-4, a filter assembly; 1-4-1, a return pipe; 1-4-2, a water diversion pipe; 1-4-3, a filter bag; 1-4-4, a main water pump; 1-4-5, water supply pipe; 1-4-6, slave water pump; 1-5, a medicine adding port; 1-6, a top plate of the filter box; 1-7, an exhaust port; 1-8, a top plate of a buffer tank; 1-9, a viewing port; 1-10 parts of a drain pipe; 1-11, a communication port; 1-12, inner frame; 2. connecting a pipeline; 3. a depth filtration device; 3-1, a blind plate; 3-2, adding a medicine connecting pipe; 3-3, a flushing pipe; 3-4, a water outlet pipe; 3-5, a pipe shell; 3-6, a drain pipe; 3-7, a bracket; 3-8, a sewage discharge pipe; 3-9 parts of a water inlet pipe; 3-10, end plates; 3-11, fixing a support plate; 3-12, plastic cover; 3-13, a center rod; 3-14, a movable support plate; 3-15, a filter element; 4. a delivery pump.

Detailed Description

For further understanding of the contents, features and effects of the present invention, the following embodiments are described in detail.

Please refer to fig. 1, the industrial wastewater treatment equipment of the present invention comprises a circulating filter device 1 and a depth filter device 3, wherein the circulating filter device 1 is used for circulating and filtering wastewater, mainly used for removing large particle impurities contained in the wastewater, the depth filter device 3 is used for performing depth filtration on the wastewater subjected to the circulating and filtering treatment, removing small particle impurities contained in the wastewater, and finally discharging clarified wastewater for further treatment, so that the industrial wastewater treatment equipment provides the pre-treatment of the wastewater.

Referring to fig. 2, 3 and 4, it can be seen that:

the circulating filter device 1 comprises a water collecting tank 1-1, a filter tank 1-2 and a buffer tank 1-3, wherein the filter tank 1-2 and the buffer tank 1-3 are communicated through a communication port 1-11. The waste water collection device comprises a water collection tank 1-1, an external waste water conveying device, a filter tank 1-2, a buffer tank 1-3 and a communication port 1-11, wherein the water collection tank 1-1 is used for collecting waste water, the external waste water conveying device conveys the waste water into the water collection tank 1-1, the filter tank 1-2 is used for filtering the waste water in a circulating filtering mode, the buffer tank 1-3 is used for buffering and temporarily storing the waste water, and the waste water in the filter tank 1-2 flows into the buffer tank 1-3.

The water collecting tank 1-1 is made of metal plates through welding, the filtering tank 1-2 and the buffer tank 1-3 are both composed of inner frames 1-12 located inside and tank plates located at the bottom and the periphery of the inner frames 1-12, a filtering tank top plate 1-6 is arranged on the inner frames 1-12 of the filtering tank 1-2, the filtering tank top plate 1-6 is detachably connected with the inner frames 1-12 of the filtering tank 1-2, and a detachable buffer tank top plate 1-8 is arranged on the inner frames 1-12 of the buffer tank 1-3.

A drug adding port 1-5 is arranged on a top plate 1-6 of the filter box 1-2, and a treatment agent is fed into the filter box 1-2 through the drug adding port 1-5 to react with the wastewater. The top plate 1-6 of the filter box is also provided with an exhaust port 1-7, and gas generated in the filter box 1-2 can be exhausted through the exhaust port 1-7. Considering that the exhausted gas may contain some harmful volatile components, an exhaust gas treatment device may be installed on the exhaust port 1-7 to collect and treat the exhaust gas, and the collected exhaust gas may be treated by activated carbon adsorption, condensation and backflow (re-backflow into the filter box 1-2) and the like to avoid direct discharge to the surrounding environment.

When the filter box 1-2 and the buffer box 1-3 need to be maintained and cleaned, the filter box top plate 1-6 and the buffer box top plate 1-8 can be disassembled, and the interiors of the filter box 1-2 and the buffer box 1-3 are exposed, so that the maintenance and cleaning operation is convenient. As shown in figure 2, the top plate 1-8 of the buffer box is formed by splicing a plurality of plate bodies, each plate body is fixedly connected with the inner frame 1-12 of the plate body through bolts, the top plate 1-8 of the buffer box is also provided with an observation port 1-9, the observation port 1-9 is arranged on one plate body, a buckle cover is arranged on the observation port 1-9, and the inside waste water can be observed, sampled and the like by opening the buckle cover.

The side wall of the buffer tank 1-3 is provided with a drain pipe 1-10, and the waste water in the buffer tank 1-3 is discharged through the drain pipe 1-10 and supplied to the subsequent depth filtering device 3.

The device also comprises a filter assembly 1-4, wherein the filter assembly 1-4 is used for applying a circulating filtering effect on the wastewater. Referring to fig. 4, it can be seen that: the filtering component 1-4 comprises a water pump arranged in a water collecting tank 1-1, a plurality of filter bags 1-4-3 arranged on a top plate 1-6 of the filter tank, a water supply pipe 1-4-5 which is connected with an outlet of the water pump and is provided with a plurality of water distribution pipes 1-4-2, each water distribution pipe 1-4-2 is communicated with each filter bag 1-4-3, the filtering component also comprises a return pipe 1-4-1 connected with an inlet of the water pump, and the end part of the return pipe 1-4-1 extends to an inner cavity of the buffer tank 1-3.

Therefore, under the pumping action of the water pump, the wastewater in the buffer tank 1-3 is conveyed to each filter bag 1-4-3 through the return pipe 1-4-1 and the water conveying pipe 1-4-5, enters the filter tank 1-2 after being filtered, and then flows into the buffer tank 1-3 through the communication port 1-11, so that circular flow is formed, and in the process, circular filtration of the wastewater is realized, and particle impurities initially contained in the wastewater and particle impurities, floccules and the like generated after dosing (such as adding a flocculating agent and the like) are continuously filtered.

As shown in the figure, the filter bag 1-4-3 comprises a shell positioned above the top plate 1-6 of the filter box and a filter bag body suspended below the top plate 1-6 of the filter box, and each water distribution pipe 1-4-2 is in butt joint connection with an interface on each shell. Specifically, the bottom of the shell is provided with a flange plate, the top opening of the filter bag body is provided with the flange plate, and the flange plates are in butt joint connection. Mounting holes are formed in corresponding positions on the top plate 1-6 of the filter box, when the filter bags 1-4-3 are mounted, the filter bag bodies are fed into the mounting holes from top to bottom, and the flange plate is fixedly connected with the top plate 1-6 of the filter box through bolts. After working for a period of time, a large amount of particulate impurities can be intercepted in the filter bag body, so that the filter bag 1-4-3 needs to be cleaned or replaced, at the moment, the connection between the shell and the water distribution pipe 1-4-2 and the connection between the flange and the top plate 1-6 of the filter box can be removed, the filter bag 1-4-3 is integrally lifted, the filter bag body is pulled out from the mounting hole, the filter bag body is detached by detaching the flanges of the shell and the filter bag body, and the filter bag body is cleaned or mounted at the bottom of the shell and then mounted back.

The front end of the water return pipe 1-4-1 penetrates through the side wall, abutted against the filter tank 1-2 and the buffer tank 1-3, the rear end of the water return pipe 1-4-1 penetrates through the side wall, abutted against the filter tank 1-2, of the water collection tank 1-1, and the middle of the water return pipe 1-4-1 is located at the bottom of the inner cavity of the filter tank 1-2, so that the filter component 1-4 adopts a structural form of an inner-walking pipeline, the pipeline is prevented from extending outside, and the compactness of the whole equipment is ensured.

In the embodiment, the water pump comprises a main water pump 1-4-4 and a secondary water pump 1-4-6, the rear end of a water supply pipe 1-4-5 is Y-shaped and branched and is respectively connected to the outlet of the main water pump 1-4-4 and the outlet of the secondary water pump 1-4-6, the rear end of a return pipe 1-4-1 is connected to the inlet of the main water pump 1-4-4, a water suction pipe is arranged at the inlet of the secondary water pump 1-4-6, and the water suction pipe is positioned at the bottom of the inner cavity of the water collecting tank 1-1. The secondary water pump 1-4-6 is used for sending the waste water in the water collecting tank 1-1 to the filtering component 1-4 under the initial condition, after the liquid level is established in the buffer tank 1-3, the primary water pump 1-4-4 is started to work for circulating pumping, and the secondary water pump 1-4-6 can be stopped at the moment.

Both the master 1-4-4 and the slave 1-4-6 pumps are selected as submersible pumps, i.e. may be submerged in the waste water.

Referring to fig. 5 and 6, it can be seen that:

the depth filtering device 3 comprises a pipe shell 3-5 with a front end seal and a rear end provided with a flange plate, and a blind plate 3-1 is arranged on the flange plate, so that a filtering cavity is formed in the pipe shell 3-5. As shown in the figure, the front end of the tube shell 3-5 is sealed by the end plate 3-10, the edge of the end plate 3-10 is hermetically welded with the front edge of the tube shell 3-5, the blind plate 3-1 is fixedly connected with the flange plate by the bolt, and a sealing gasket is arranged between the blind plate 3-1 and the flange plate, so that the blind plate 3-1 can be detached when the interior needs to be cleaned and consumables need to be replaced. In this embodiment, the shells 3-5 of the filter unit 3 are supported by two sets of brackets 3-7, one set being front and the other set being back, in a horizontal state.

The top wall of the middle part of the pipe shell 3-5 is provided with a flushing pipe 3-3, the top wall of the rear part is provided with a medicine adding connecting pipe 3-2, the bottom wall of the middle part is provided with a sewage discharge pipe 3-8, the bottom wall of the front part is provided with a discharge pipe 3-6, the side wall of the rear part is provided with a water inlet pipe 3-9, and the side wall of the front part is provided with a water outlet pipe 3-4. Wherein, the flushing pipe 3-3 can be connected to an external flushing device, and a high-pressure flushing water source is sent into the interior through the flushing pipe 3-3 to flush and clean the interior; the dosing connecting pipe 3-2 is used for being connected with an external dosing device, and a medicament is fed into the pipe shell 3-5 through the dosing connecting pipe 3-2; the drain pipes 3-8 are used for draining, a large amount of particulate impurities can be intercepted in the pipe shells 3-5 after the pipe shells run for a certain time, the impurities can be discharged by opening the drain pipes 3-8, and the drain pipes 3-8 also need to be opened in the flushing process; the drain pipe 3-6 is used for fully discharging the wastewater in the pipe shell 3-5, and in the washing process, a washing water source can be connected through the drain pipe 3-6 and is reversely injected into the washing water source to realize reverse washing; the waste water enters the interior of the pipe shell 3-5 from the water inlet pipe 3-9, and is discharged from the water outlet pipe 3-4 after being filtered.

And a filtering component is arranged inside the pipe shells 3-5 and is used for filtering the wastewater.

The device also comprises a connecting pipeline 2 with a delivery pump 4, one end of the connecting pipeline 2 is connected to a drain pipe 1-10, the other end of the connecting pipeline 2 is connected to a water inlet pipe 3-9, the waste water discharged by the circulating filter device 1 is delivered to the depth filter device 3 through the connecting pipeline 2, and the delivery pump 4 is used for providing power for the flow of the waste water and keeping the waste water at a certain water pressure.

The filtering component comprises a fixed support plate 3-11 which is positioned at the front part of the inner cavity of the pipe shell 3-5 and is provided with a water hole, and the edge of the fixed support plate 3-11 is fixed with the inner wall of the pipe shell 3-5 in a sealing way (welded in a sealing way); the filter element comprises a fixed support plate 3-11, a movable support plate 3-14 and a filter element 3-15, wherein the movable support plate 3-14 is positioned at the rear part of an inner cavity of a tube shell 3-5 and is provided with a water hole, a central rod 3-13 is arranged between the middle parts of the fixed support plate 3-11 and the movable support plate 3-14, the filter element 3-15 is provided with a plastic sleeve 3-12 at the front part, the filter element 3-15 is provided with a cavity, the central rod 3-13 is positioned in the cavity, and the front end of the.

In this embodiment, a threaded hole is formed in the center of the fixed support plate 3-11, a connecting hole is formed in the center of the movable support plate 3-14, a threaded portion is formed at the front end of the center rod 3-13 and located in the threaded hole of the fixed support plate 3-11, and a threaded portion is formed at the rear end of the center rod 3-13 and located in the threaded hole of the movable support plate 3-14 and locked by a nut. By screwing the nut, the assembly formed by the filter element 3-15 and the plastic sleeve 3-12 is clamped between the fixed support plate 3-11 and the movable support plate 3-14 in the axial direction, and the plastic sleeve 3-12 has a certain deformation capacity, so that the front edge of the plastic sleeve 3-12 is tightly pressed against the fixed support plate 3-11 after being deformed under the action of the clamping force.

When consumable replacement of the filter element 3-15 is needed, the blind plate 3-1 is opened, then the nut at the rear end of the central rod 3-13 is screwed off, the movable support plate 3-14 is taken off, the whole filter element 3-15 can be pulled out, the filter element 3-15 is cleaned or replaced, and the clean filter element 3-15 is installed in the tube shell 3-5 again.

As shown in figure 6, the inner ends of the medicine adding connecting pipe 3-2, the flushing pipe 3-3 and the sewage discharging pipe 3-8 are all positioned between the fixed supporting plate 3-11 and the movable supporting plate 3-14, the inner ends of the sewage discharging pipe 3-6 and the water outlet pipe 3-4 are all positioned between the fixed supporting plate 3-11 and the end plate 3-10, and the inner end of the water inlet pipe 3-9 can be positioned between the blind plate 3-1 and the movable supporting plate 3-14 or between the movable supporting plate 3-14 and the fixed supporting plate 3-11.

The aperture of the filter holes of the filter elements 3-15 is smaller than that of the filter holes of the filter bag bodies of the filter bags 1-4-3, so that large particle impurities in the wastewater are filtered by the filter bags 1-4-3 in the circulating filtration process, small particle impurities in the wastewater are further filtered by the filter elements 3-15 in the depth filtration process, the wastewater discharged from the water outlet pipe 3-4 becomes clear, and the subsequent treatment such as catalytic oxidation, pH adjustment and the like can be carried out.

The working process is as follows:

the external wastewater conveying device conveys wastewater into the water collecting tank 1-1, the water pump 1-4-6 is started to convey the wastewater tank in the water collecting tank 1-1 to the filtering component 1-4, the wastewater enters the filtering tank 1-2 after being filtered by the filtering component 1-4, and then flows into the buffer tank 1-3 through the communicating port 1-11; when the wastewater in the water collecting tank 1-1 is completely transferred (namely the wastewater liquid level in the water collecting tank 1-1 reaches the liquid level below the liquid level which can be pumped by the slave water pump 1-4-6), the liquid level is established in the buffer tank 1-3, then the master water pump 1-4-4 is started, the slave water pump 1-4-6 is stopped, and the wastewater in the buffer tank 1-3 flows back into the filtering component 1-4 under the pumping action of the master water pump 1-4-4, so that the circulating filtering treatment is realized;

after the circulating filtration treatment process lasts for a certain time, observing or sampling and testing through an observation port 1-9 to obtain a conclusion that the content of large-particle impurities in the wastewater is reduced to a certain degree; then starting a delivery pump 4, pumping the wastewater in the buffer tank 1-3 to a depth filtering device 3 through a connecting pipeline 2, and carrying out depth filtering treatment, wherein the circulating filtering device 1 can be not stopped in the process;

the wastewater after deep filtration becomes clear, and a subsequent treatment device is connected to a water outlet pipe 3-4 through a pipeline and receives the wastewater discharged by the deep filtration device 3;

when the wastewater liquid level in the buffer tank 1-3 is lowered to a low level (namely, lowered to the height of the drain pipe 1-10), the delivery pump 4 is stopped; and (4) feeding the wastewater into the water collecting tank 1-1 again through an external wastewater conveying device, and repeating the process.

Claims (9)

1. An industrial wastewater treatment device is characterized in that: comprises a circulating filter device (1) and a depth filter device (3);

the circulating filter device (1) comprises a water collecting tank (1-1), a filter tank (1-2) and a buffer tank (1-3), the filter tank (1-2) and the buffer tank (1-3) are communicated through a communication port (1-11), a medicine adding port (1-5) is formed in a filter tank top plate (1-6) of the filter tank (1-2), and a drain pipe (1-10) is formed in the side wall of the buffer tank (1-3); the filter assembly comprises a water collecting tank (1-1), a water pump, a plurality of filter bags (1-4-3) and a return pipe (1-4-1), wherein the water pump is arranged in the water collecting tank (1-1), the filter bags (1-4-3) are arranged on a top plate (1-6) of the filter tank, the water supply pipe (1-4-5) is connected with an outlet of the water pump and provided with a plurality of water distribution pipes (1-4-2), each water distribution pipe (1-4-2) is communicated with each filter bag (1-4-3), the return pipe (1-4-1) is connected with an inlet of the water pump, and the end part of the return pipe (1-4-1) extends to an inner cavity of the buffer tank (1-3); the depth filtering device (3) comprises a tube shell (3-5) with a front end seal and a rear end provided with a flange plate, a blind plate (3-1) is arranged on the flange plate, a flushing pipe (3-3) is arranged on the top wall of the middle part of the tube shell (3-5), a medicine adding connecting pipe (3-2) is arranged on the top wall of the rear part, a blow-off pipe (3-8) is arranged on the bottom wall of the middle part, a blow-off pipe (3-6) is arranged on the bottom wall of the front part, a water inlet pipe (3-9) is arranged on the side wall of the rear part, a water outlet pipe (3-4) is arranged on the side wall of;

the device also comprises a connecting pipeline (2) with a delivery pump (4), wherein one end of the connecting pipeline is in butt joint with the drainage pipes (1-10), and the other end of the connecting pipeline is in butt joint with the water inlet pipes (3-9).

2. The industrial wastewater treatment facility as set forth in claim 1, characterized in that: the filter bag (1-4-3) comprises a shell positioned above the top plate (1-6) of the filter box and a filter bag body suspended below the top plate (1-6) of the filter box, and each water distribution pipe (1-4-2) is in butt joint connection with an interface on each shell.

3. The industrial wastewater treatment facility as set forth in claim 2, characterized in that: the front end of the return pipe (1-4-1) penetrates through the side wall, abutted against the filter tank (1-2) and the buffer tank (1-3), of the water collecting tank (1-1) and the filter tank (1-2), and the rear end of the return pipe penetrates through the side wall, abutted against the filter tank (1-2), of the water collecting tank (1-1), and the middle of the return pipe (1-4-1) is located at the bottom of the inner cavity of the filter tank (1-2).

4. The industrial wastewater treatment apparatus according to claim 3, characterized in that: the filter box (1-2) and the buffer box (1-3) are both composed of an inner frame (1-12) positioned inside and box plates positioned at the bottom and the periphery of the inner frame (1-12), a filter box top plate (1-6) is detachably connected with the inner frame (1-12) of the filter box (1-2), and a detachable buffer box top plate (1-8) is arranged on the inner frame (1-12) of the buffer box (1-3).

5. The industrial wastewater treatment apparatus according to claim 4, characterized in that: the top plate (1-6) of the filter box is also provided with an exhaust port (1-7), and the top plate (1-8) of the buffer box is also provided with an observation port (1-9).

6. The industrial wastewater treatment facility as set forth in claim 5, characterized in that: the water pump comprises a main water pump (1-4-4) and a secondary water pump (1-4-6), the rear end of a water supply pipe (1-4-5) is Y-shaped and branched and is respectively connected to the outlet of the main water pump (1-4-4) and the outlet of the secondary water pump (1-4-6), the rear end of a return pipe (1-4-1) is connected to the inlet of the main water pump (1-4-4), a water suction pipe is arranged at the inlet of the secondary water pump (1-4-6), and the water suction pipe is positioned at the bottom of the inner cavity of the water collecting tank (1-1).

7. The industrial wastewater treatment facility as set forth in claim 6, characterized in that: the filtering component comprises a fixed support plate (3-11) which is positioned at the front part of the inner cavity of the pipe shell (3-5) and is provided with a water hole, and the edge of the fixed support plate (3-11) is fixed with the inner wall of the pipe shell (3-5) in a sealing way; the filter element is characterized by further comprising a movable support plate (3-14) which is located at the rear part of the inner cavity of the tube shell (3-5) and provided with a water hole, a central rod (3-13) is arranged between the middle parts of the fixed support plate (3-11) and the movable support plate (3-14), the filter element (3-15) is provided with a plastic sleeve (3-12) at the front part, the filter element (3-15) is provided with a cavity, the central rod (3-13) is located in the cavity, and the front end of the plastic sleeve (3-12) is abutted against the fixed support plate (3-11).

8. The industrial wastewater treatment facility as set forth in claim 7, characterized in that: a threaded hole is formed in the center of the fixed support plate (3-11), a connecting hole is formed in the center of the movable support plate (3-14), a threaded part is formed in the front end of the central rod (3-13) and located in the threaded hole of the fixed support plate (3-11), a threaded part is formed in the rear end of the central rod (3-13) and located in the threaded hole of the movable support plate (3-14) and locked by a nut.

9. The industrial wastewater treatment facility as set forth in claim 8, characterized in that: the pipe shell (3-5) of the filtering device (3) is supported by a front group of brackets (3-7) and a rear group of brackets (7).

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