CN219972002U - Reclaimed water biological filter - Google Patents

Abstract

The utility model discloses a reclaimed water biological filter, which comprises a barrel body, wherein a water inlet is formed in one side of the bottom of the barrel body, the water inlet is connected with one port of an electromagnetic three-way valve through a filter tube, a first flow rate sensor is arranged in the water inlet, and a second flow rate sensor is arranged in one port of the electromagnetic three-way valve; the biological purification filler is arranged in the barrel body, and the aeration pipe is arranged in the biological purification filler; the upper half of the barrel body is provided with an overflow outlet, the outer side of the upper half of the barrel body is provided with an annular container, the side wall of the annular container is provided with an overflow pipe, the bottom of the annular container is communicated with the lower half of the barrel body through a pipeline, and the pipeline is provided with an electromagnetic control valve and a third flow rate sensor. The advantages are that: after the sewage throughput of the filter tube is reduced, the flow velocity sensor monitors the flow velocity before and after the sewage throughput, and the back flushing process is timely carried out to grasp the back flushing time; meanwhile, the continuous back flushing of the purified clear water is prolonged, the flushing is thorough, and the flushing effect is improved.

Description

Reclaimed water biological filter

Technical field:

the utility model relates to the field of wastewater utilization, in particular to a reclaimed water biological filter.

The background technology is as follows:

the water consumption of the power plant boiler is large, the related application of urban reclaimed water (reclaimed water) as boiler makeup water exists at present, the treatment cost of the power plant boiler makeup water with the urban reclaimed water as a water source is not higher than 24.5 yuan, and the investment cost of the water per ton is not higher than 10000 yuan. The regenerated water is purified by a deep purification treatment process, and the effluent standard meets the requirements of the power plant boiler water supplementing and heating network water supplementing standard, wherein the aeration biological filter process is widely applied.

The aeration biological filter, BAF for short, is a novel biological membrane method sewage treatment process developed in Europe and America at the end of the 80 s, has been greatly developed in the beginning of the 90 s, reaches a maximum scale of hundreds of thousands of tons per day, and is developed into denitrification and dephosphorization.

At present, in the operation process of the existing biological aerated filter, dirt accumulates on a filter tube for physical filtration due to long-term operation, so that the performance of the filter tube is reduced, the sewage throughput is reduced, and back flushing is needed at the moment, but the time of back flushing is not easy to grasp.

The utility model comprises the following steps:

the utility model aims to provide a reclaimed water biological filter.

The utility model is implemented by the following technical scheme:

the utility model provides a reclaimed water biological filter, includes staving, filter tube, electromagnetism three-way valve, biological purification filler, aeration pipe, controller, staving bottom one side is equipped with the water inlet, the water inlet with one end of filter tube is connected, the other end of filter tube with one mouthful of electromagnetism three-way valve is connected, other two mouthfuls of electromagnetism three-way valve are connected with backwash pipe and inlet tube respectively be equipped with first flow sensor in the water inlet, be equipped with second flow sensor in one mouthful of electromagnetism three-way valve that is connected with one end of filter tube;

the biological purification filler is fixedly arranged in the middle part of the barrel body, and the aeration pipe penetrates through the side wall of the barrel body and is arranged in the biological purification filler;

the upper half part of the barrel body is provided with an overflow outlet, an annular container is sleeved and fixed on the outer side of the upper half part of the barrel body, an overflow pipe is arranged on the side wall of the annular container, the pipe orifice of the overflow pipe is lower than the overflow outlet, the bottom of the annular container is communicated with the lower half part of the barrel body through a pipeline, an electromagnetic control valve is arranged on the pipeline, and a third flow rate sensor is arranged in the pipeline below the electromagnetic control valve;

the signal output ends of the first flow rate sensor, the second flow rate sensor and the third flow rate sensor are respectively connected with the signal input end of the controller, and the controller is respectively and electrically connected with the electromagnetic three-way valve and the electromagnetic control valve.

Preferably, the communicating part of the pipeline and the lower half part of the barrel body is a horizontal elbow, and the third flow rate sensor is arranged in the elbow.

The utility model has the advantages that: after the sewage throughput of the filter tube is reduced, the flow velocity sensor monitors the flow velocity before and after the sewage throughput, and the back flushing process is timely carried out to grasp the back flushing time; meanwhile, the continuous back flushing of the purified clear water is prolonged, the flushing is thorough, and the flushing effect is improved.

Description of the drawings:

in order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of the overall structure of the present utility model;

fig. 2 is a top view of the overall structure of the present utility model.

In the figure: the device comprises a barrel body 1, a water inlet 2, a filter tube 3, an electromagnetic three-way valve 4, a backwashing tube 5, a water inlet tube 6, a first flow sensor 7, a second flow sensor 8, biological purification packing 9, an aeration tube 10, an overflow outlet 11, an annular container 12, an overflow tube 13, a pipeline 14, an electromagnetic control valve 15, a third flow sensor 16 and a controller 17.

The specific embodiment is as follows:

the following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 and 2, the reclaimed water biological filter comprises a barrel body 1, a filter tube 3, an electromagnetic three-way valve 4, biological purification filler 9, an aeration tube 10 and a controller 17, wherein one side of the bottom of the barrel body 1 is provided with a water inlet 2, the water inlet 2 is connected with one end of the filter tube 3, the other end of the filter tube 3 is connected with one port of the electromagnetic three-way valve 4, the other two ports of the electromagnetic three-way valve 4 are respectively connected with a backwashing pipe 5 and a water inlet pipe 6, the water inlet pipe 6 is communicated with a sewage water source pipeline, the electromagnetic three-way valve 4 is communicated with the water inlet pipe 6 and the filter tube 3, and sewage is filtered by the filter tube 3 to enter the inner bottom of the barrel body 1;

a first flow rate sensor 7 is arranged in the water inlet 2, a second flow rate sensor 8 is arranged in one opening of the electromagnetic three-way valve 4 connected with one end of the filter tube 3, the second flow rate sensor 8 monitors the flow rate before entering the filter tube 3, and the first flow rate sensor 7 monitors the flow rate after exiting the filter tube 3;

the biological purification filler 9 is fixedly arranged in the middle part of the barrel body 1, the aeration pipe 10 penetrates through the side wall of the barrel body 1 and is arranged in the biological purification filler 9, sewage rises to pass through the biological purification filler 9, purification is completed under the filtering operation of the biological purification filler 9, and oxygen is introduced into the aeration pipe 10 and is sent into the biological purification filler 9 to promote the biological purification reaction of the biological purification filler 9;

an overflow outlet 11 is formed in the upper half part of the barrel body 1, an annular container 12 is fixedly sleeved on the outer side of the upper half part of the barrel body 1, an overflow pipe 13 is arranged on the side wall of the annular container 12, the pipe orifice of the overflow pipe 13 is lower than the overflow outlet 11, purified reclaimed water flows into the annular container 12 from the overflow outlet 11 and overflows again, the reclaimed water flows out of the overflow pipe 13, when the water flow speed before entering the filter pipe 3 is kept normal, but the water flow speed after discharging the filter pipe 3 is reduced, the water flow speed ratio of the first flow speed sensor 7 to the second flow speed sensor 8 is increased, back flushing needs to be started, the electromagnetic three-way valve 4 is communicated with the back flushing pipe 5 and the filter pipe 3, water supply of the water inlet pipe 6 is stopped, filtered and purified water liquid at the upper end of the purifying filler 9 in the barrel body 1 is permeated downwards, back flushing operation is performed on the filter pipe 3, and the back flushed sewage is discharged through the back flushing pipe 5 after the back flushing operation is completed;

the bottom of the annular container 12 is communicated with the lower half part of the barrel body 1 through a pipeline 14, an electromagnetic control valve 15 is arranged on the pipeline 14, a third flow rate sensor 16 is arranged in the pipeline 14 below the electromagnetic control valve 15, the third flow rate sensor 16 monitors that the flow rate of water in the pipeline 14 below the electromagnetic control valve 15 is reduced, water is discharged, the electromagnetic control valve 15 is opened, reclaimed water in the annular container 12 flows into the lower half part of the barrel body 1 through the pipeline 14, the water which continuously permeates downwards in the barrel body 1 continuously backflushes the filter tube 3, the communicating part of the pipeline 14 and the lower half part of the barrel body 1 is a horizontal elbow, and the third flow rate sensor 16 is arranged in the elbow;

the signal output ends of the first flow rate sensor 7, the second flow rate sensor 8 and the third flow rate sensor 16 are respectively connected with the signal input end of the controller 17, the controller 17 is respectively electrically connected with the electromagnetic three-way valve 4 and the electromagnetic control valve 15, the signals of the first flow rate sensor 7, the second flow rate sensor 8 and the third flow rate sensor 16 are fed back to the controller 17, and the controller 17 controls the movements of the electromagnetic three-way valve 4 and the electromagnetic control valve 15 through preset signal feedback.

Working principle: when the sewage treatment device is used, the water inlet pipe 6 is connected with a sewage source pipeline, the electromagnetic three-way valve 4 is connected with the water inlet pipe 6 and the filter pipe 3, sewage is filtered by the filter pipe 3 and enters the inner bottom of the barrel body 1, the sewage rises to pass through the biological purification filler 9, purification is completed under the filtering operation of the biological purification filler 9, oxygen is introduced into the aeration pipe 10 and is sent into the biological purification filler 9, the biological purification reaction of the biological purification filler 9 is promoted, purified reclaimed water flows into the annular container 12 from the overflow outlet 11, overflows again and flows out from the overflow pipe 13.

The second flow rate sensor 8 monitors the flow rate before entering the filter tube 3, the first flow rate sensor 7 monitors the flow rate after exiting the filter tube 3, the flow rate ratio of the first flow rate sensor 7 to the second flow rate sensor 8 is preset for the controller 17 in advance, the flow rate ratio is increased to exceed a preset value, and the specific process is as follows: when the water flow speed before entering the filter tube 3 is kept normal, but the water flow speed after discharging the filter tube 3 is reduced, the flow speed ratio of the first flow sensor 7 to the second flow sensor 8 is increased to exceed a preset value, back flushing is required to be started, the controller 17 controls the action of the electromagnetic three-way valve 4 through signal feedback, the electromagnetic three-way valve 4 is communicated with the back flushing tube 5 and the filter tube 3, water supply of the water inlet tube 6 is stopped, the water liquid which is filtered and purified by the upper end of the biological purification filling 9 in the barrel body 1 permeates downwards, back flushing operation is carried out on the filter tube 3, and back flushed sewage is discharged through the back flushing tube 5, and after the back flushing operation is finished;

the water level at the lower half part of the barrel body 1 reaches the position of a horizontal elbow where the pipeline 14 is communicated with the lower half part of the barrel body 1, the third flow rate sensor 16 monitors that the flow rate of water in the pipeline 14 below the electromagnetic control valve 15 is reduced, the water is discharged and fed back to the controller 17, the electromagnetic control valve 15 is opened by the controller 17, reclaimed water in the annular container 12 flows into the lower half part of the barrel body 1 through the pipeline 14, and the water which permeates downwards in the barrel body 1 continuously backflushes the filter tube 3, so that the flushing is more thorough.

After the sewage throughput of the filter tube is reduced, the flow velocity sensor monitors the flow velocity before and after the sewage throughput, and the back flushing process is timely carried out to grasp the back flushing time; meanwhile, the continuous back flushing of the purified clear water is prolonged, the flushing is thorough, and the flushing effect is improved.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (2)

1. The regenerated water biological filter is characterized by comprising a barrel body, a filter tube, an electromagnetic three-way valve, biological purification filler, an aeration tube and a controller, wherein a water inlet is formed in one side of the bottom of the barrel body, the water inlet is connected with one end of the filter tube, the other end of the filter tube is connected with one port of the electromagnetic three-way valve, the other two ports of the electromagnetic three-way valve are respectively connected with a backwashing tube and a water inlet tube, a first flow rate sensor is arranged in the water inlet, and a second flow rate sensor is arranged in one port of the electromagnetic three-way valve connected with one end of the filter tube;

the biological purification filler is fixedly arranged in the middle part of the barrel body, and the aeration pipe penetrates through the side wall of the barrel body and is arranged in the biological purification filler;

the upper half part of the barrel body is provided with an overflow outlet, an annular container is sleeved and fixed on the outer side of the upper half part of the barrel body, an overflow pipe is arranged on the side wall of the annular container, the pipe orifice of the overflow pipe is lower than the overflow outlet, the bottom of the annular container is communicated with the lower half part of the barrel body through a pipeline, an electromagnetic control valve is arranged on the pipeline, and a third flow rate sensor is arranged in the pipeline below the electromagnetic control valve;

the signal output ends of the first flow rate sensor, the second flow rate sensor and the third flow rate sensor are respectively connected with the signal input end of the controller, and the controller is respectively and electrically connected with the electromagnetic three-way valve and the electromagnetic control valve.

2. A regenerable biological filter as claimed in claim 1, wherein: the pipeline is a horizontal elbow at the communication position of the lower half part of the barrel body, and the third flow rate sensor is arranged in the elbow.