CN112624310B - Aeration filter device and method for treating high-hardness wastewater - Google Patents
Aeration filter device and method for treating high-hardness wastewater Download PDFInfo
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- CN112624310B CN112624310B CN202011506371.9A CN202011506371A CN112624310B CN 112624310 B CN112624310 B CN 112624310B CN 202011506371 A CN202011506371 A CN 202011506371A CN 112624310 B CN112624310 B CN 112624310B
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- 238000005273 aeration Methods 0.000 title claims abstract description 101
- 238000000034 method Methods 0.000 title claims abstract description 39
- 239000002351 wastewater Substances 0.000 title claims abstract description 34
- 238000009826 distribution Methods 0.000 claims abstract description 104
- 238000009423 ventilation Methods 0.000 claims abstract description 81
- 238000004140 cleaning Methods 0.000 claims abstract description 58
- 238000011010 flushing procedure Methods 0.000 claims abstract description 47
- 239000000945 filler Substances 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 6
- 239000003344 environmental pollutant Substances 0.000 abstract description 12
- 231100000719 pollutant Toxicity 0.000 abstract description 12
- 239000010865 sewage Substances 0.000 abstract description 11
- 238000005406 washing Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 113
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 21
- 230000000694 effects Effects 0.000 description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000011001 backwashing Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000004060 metabolic process Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000010170 biological method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
- Activated Sludge Processes (AREA)
Abstract
The present disclosure relates to the technical field of sewage treatment, and in particular, to an aeration filter device and a method for treating high hardness wastewater, wherein the device includes a biological filter; the aeration assembly comprises an air distribution pipeline and an air ventilation pipeline which are arranged in the biological filter; the high-pressure cleaning assembly comprises an air compressor and a high-pressure gas flushing pipeline, one end of the high-pressure gas flushing pipeline is communicated with the air compressor, and the other end of the high-pressure gas flushing pipeline is communicated with the ventilation pipeline. In the device that this disclosure provided, through setting up high pressure cleaning assembly, make high-pressure gas input to the gas distribution pipeline in, produce great pressure and impact force to the gas distribution pipeline, make the pollutant to keeping away from the direction motion of gas distribution pipeline, make simultaneously that the incrustation scale of adhering to gas outlet department at gas distribution pipeline breaks away from with the pipeline, realize the washing to gas distribution pipeline, avoided the aeration in-process because the too big phenomenon of air-blower load that gas distribution pipeline blockked up leads to reduced the power consumption, improved aeration efficiency, guaranteed the normal work of biological filter.
Description
Technical Field
The disclosure relates to the technical field of sewage treatment, in particular to an aeration filter device and method for treating high-hardness wastewater.
Background
In the treatment of high hardness wastewater, a biological method is a widely used treatment method, and commonly used process equipment includes a moving bed biofilm reactor, an EGSB reactor, a biological aerated filter and the like. The devices are accompanied with the aeration and oxygen dissolution process in the operation process, after a period of operation, pollutants in the filter tank are gradually accumulated due to the interception effect of a filter layer in the reactor on suspended matters in wastewater, and biological slime is generated by natural falling of a biological film and attached to a gas distribution pipe, so that the gas distribution pipe is blocked. And when aeration is stopped, wastewater can enter the aeration pipe under the action of negative pressure, and pollutants in the filter tank can cause the blockage of the gas distribution pipe holes. Especially when handling high hardness waste water, can appear in the reactor crystal and separate out and attach on the gas distribution pipeline wall, produce the scale deposit phenomenon, lead to the pipeline to be stopped up gradually, the pipe diameter diminishes, and the air-blower load is too big, not only can increase the power consumption, aeration efficiency also reduces to some extent, leads to even the biological filter to be difficult to normal work.
Disclosure of Invention
In order to solve the technical problems described above or at least partially solve the technical problems described above, the present disclosure provides an aeration filter device and method for treating high hardness wastewater.
The present disclosure provides an aeration filter device for treating high hardness wastewater, comprising:
a biological filter;
the aeration assembly comprises a gas distribution pipeline arranged in the biological filter and a ventilation pipeline for supplying gas to the gas distribution pipeline;
the high-pressure cleaning assembly comprises an air compressor and a high-pressure gas flushing pipeline, one end of the high-pressure gas flushing pipeline is communicated with the air compressor, and the other end of the high-pressure gas flushing pipeline is communicated with the ventilation pipeline.
The disclosure provides an aeration filter device for treating high-hardness wastewater, which comprises a biological filter and an aeration assembly for providing oxygen in the biological filter, wherein the aeration assembly comprises a gas distribution pipeline and a ventilation pipeline for supplying gas to the gas distribution pipeline, the gas distribution pipeline is arranged in the biological filter, and the ventilation pipeline is used for introducing external gas into the gas distribution pipeline and entering the biological filter so as to provide oxygen for aerobic reaction in the biological filter. In order to avoid the phenomenon of scaling caused by precipitation of pollutants and adhesion of scale on a gas distribution pipeline, a high-pressure cleaning assembly is arranged in an aeration filter device for treating high-hardness wastewater, the high-pressure cleaning assembly can generate high-pressure gas, and the high-pressure gas is input into a ventilation pipeline of the aeration assembly through a high-pressure gas flushing pipeline in the high-pressure cleaning assembly and enters the biological filter through the gas distribution pipeline. When high-pressure gas enters the gas distribution pipeline, larger pressure and impact force can be generated on the gas outlet of the gas distribution pipeline, so that the pollutant and scale at the gas outlet of the gas distribution pipeline are subjected to acting force in the direction away from the gas distribution pipeline, the pollutant moves in the direction away from the gas distribution pipeline, and meanwhile, the scale attached to the gas outlet of the gas distribution pipeline is separated from the gas distribution pipeline and moves in the direction away from the gas distribution pipeline, thereby realizing the cleaning effect on the gas distribution pipeline, effectively preventing the gas distribution pipeline from being blocked and the pipe diameter from becoming smaller, avoiding the phenomenon of overlarge load of a blower caused by the gas distribution pipeline in the aeration process, reducing the power consumption, improving the aeration efficiency and ensuring the normal work of the biological filter.
In addition, the gas distribution pipeline does not interrupt the supply of gas to the biological filter in the working process of the high-pressure cleaning assembly, namely, the biological filter can continuously treat sewage in the cleaning process of the gas distribution pipeline, so that the operation efficiency of the aeration filter device for treating high-hardness wastewater is ensured, and the cleaning cost of the gas distribution pipeline is reduced.
Optionally, the biological filter comprises at least two sub biological filters, and each sub biological filter is internally provided with the gas distribution pipeline.
Optionally, the ventilation pipeline comprises a main ventilation pipeline and branch ventilation pipelines for communicating the main ventilation pipeline with the sub-biofilters, and the branch ventilation pipelines are in one-to-one correspondence with the sub-biofilters.
Optionally, the high-pressure gas flushing pipeline comprises branch flushing pipelines corresponding to the branch ventilation pipelines one by one, and the branch flushing pipelines are communicated with the branch ventilation pipelines.
Optionally, the system further comprises a branch ventilation pipeline online pressure gauge, wherein the branch ventilation pipeline online pressure gauge is communicated with the branch ventilation pipeline.
Optionally, a plurality of carrier fillers are arranged in the biological filter, and a biological film is formed on the surface of each carrier filler.
Optionally, the aeration device further comprises a program control component which is respectively connected with the aeration component and the high-pressure cleaning component in a signal way.
Optionally, each branch ventilation pipeline is provided with a branch ventilation electric valve for controlling the on-off state of the branch ventilation pipeline and the main ventilation pipeline.
The disclosure also provides a method for applying the aeration filter device for treating high-hardness wastewater, comprising the following steps:
starting an aeration assembly and introducing gas into the biological filter;
detecting and judging the air pressure value in the ventilation pipeline of the aeration assembly, and simultaneously detecting and judging the working time of the aeration assembly; when the air pressure value in the ventilation pipeline of the aeration assembly is larger than or equal to a first preset air pressure value, or the working time of the aeration assembly is larger than or equal to a first preset time, starting the high-pressure cleaning assembly;
and when the air pressure value in the ventilation pipeline is smaller than the second preset air pressure value or the working time of the high-pressure cleaning assembly is longer than or equal to the second preset time, the high-pressure cleaning assembly stops working.
Optionally, the detecting and judging the air pressure value in the aeration pipeline of the aeration assembly comprises:
and detecting the pressure value in each branch pipe ventilation pipeline, comparing the pressure value in the branch pipe ventilation pipeline with the first preset air pressure value, and communicating the branch pipe ventilation pipeline with the high-pressure cleaning assembly, wherein the detected pressure value of the branch pipe ventilation pipeline is larger than the first preset pressure value, according to the detection sequence.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic view of an aeration filter device for treating high hardness wastewater according to an embodiment of the present disclosure;
fig. 2 is a schematic view of a method of using an aeration filter device for treating high hardness wastewater according to an embodiment of the present disclosure.
Wherein, 1-biological filter; 11-carrier filler; 12-a separator; 2-an aeration assembly; 21-an air distribution pipeline; 22-a vent line; 221-a main vent line; 222-branch ventilation line; 23-branch ventilation pipeline on-line pressure gauge; 24-branch pipe ventilation electric valve; 25-a main vent line check valve; 26-a main vent line manual valve; 27-a main vent line electrically operated valve; 28-main vent line on-line pressure gauge; 29-main vent line on-line flow meter; 210-a blower; 211-branch ventilation line on-line flow meter; 3-high pressure cleaning assembly; 31-an air compressor; 32-flushing the pipeline by high-pressure gas; 321-branch flushing pipeline; 322-main flush line; 33-an air storage tank; 34-branch flushing pipeline electric valve; 35-a main flush line check valve; 36-a main flushing line manual valve; 4-program-controlled components; 5-a water inlet pipeline; 51-a water supply pump; 52-an on-line pressure gauge for the water inlet pipeline; 53-inlet line check valve; 54-a manual valve of a water inlet pipeline; 55-a pneumatic valve of a water inlet pipeline; 56-an on-line flow meter for water inlet line; 6-a water outlet pipeline.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, a further description of aspects of the present disclosure will be provided below. It should be noted that, without conflict, the embodiments of the present disclosure and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the disclosure.
Fig. 1 is a schematic view of an aeration filter device for treating high hardness wastewater according to an embodiment of the present disclosure.
As shown in fig. 1, the present disclosure provides an aeration filter device for treating high hardness wastewater, comprising: a biological filter 1; a water inlet pipeline 5 and a water outlet pipeline 6 which are communicated with the biological filter 1; the aeration assembly 2, the aeration assembly 2 comprises a gas distribution pipeline 21 arranged in the biological filter 1 and a ventilation pipeline 22 for supplying gas to the gas distribution pipeline 21; the high-pressure cleaning assembly 3, the high-pressure cleaning assembly 3 comprises an air compressor 31 and a high-pressure gas flushing pipeline 32, one end of the high-pressure gas flushing pipeline 32 is communicated with the air compressor 31, and the other end of the high-pressure gas flushing pipeline is communicated with the ventilation pipeline 22.
The disclosure provides an aeration filter device for treating high-hardness wastewater, which comprises a biological filter 1 and an aeration assembly 2 for providing oxygen in the biological filter 1, wherein the aeration assembly 2 comprises a gas distribution pipeline 21 and a ventilation pipeline 22 for supplying gas to the gas distribution pipeline 21, the gas distribution pipeline 21 is arranged in the biological filter 1, and the ventilation pipeline 22 is used for introducing external gas into the gas distribution pipeline 21 and entering the biological filter 1 so as to provide oxygen for aerobic reaction in the biological filter 1. In order to avoid the phenomenon that the pollution deposit and the scale are attached to the wall of the air distribution pipeline 21 to cause the air distribution pipeline 21 to be blocked, a high-pressure cleaning assembly 3 is arranged in the aeration filter device for treating the high-hardness wastewater, the air compressor 31 of the high-pressure cleaning assembly 3 can generate high-pressure gas, and the high-pressure gas is input into the ventilation pipeline 22 of the aeration assembly 2 through the high-pressure gas flushing pipeline 32 and enters the biological filter 1 through the air distribution pipeline 21. When high-pressure gas enters the gas distribution pipeline 21, larger pressure and impact force can be generated on the gas outlet of the gas distribution pipeline 21, so that the pollutant and scale at the gas outlet of the gas distribution pipeline 21 are acted in a direction away from the gas distribution pipeline 21, the pollutant moves in a direction away from the gas distribution pipeline 21, and meanwhile, the scale attached to the gas outlet of the gas distribution pipeline 21 is separated from the gas distribution pipeline 21 and moves in a direction away from the gas distribution pipeline 21, thereby realizing the cleaning effect on the gas distribution pipeline 21, effectively preventing the gas distribution pipeline 21 from being blocked and the pipe diameter from being reduced, avoiding the phenomenon of overlarge load of the blower 210 caused by the blocking of the gas distribution pipeline 21 in the aeration process, reducing the power consumption, improving the aeration efficiency and ensuring the normal operation of the biological filter 1.
In addition, the gas distribution pipeline 21 does not interrupt the supply of gas to the biological filter 1 in the working process of the high-pressure cleaning assembly 3, namely, the biological filter 1 can continuously treat sewage in the cleaning process of the gas distribution pipeline 21, so that the operation efficiency of the aeration filter device for treating high-hardness wastewater is ensured, and meanwhile, the cleaning cost of the gas distribution pipeline 21 is reduced.
The water inlet pipeline 5 is provided with a water supply pump 51, a water inlet pipeline on-line pressure gauge 52, a water inlet pipeline check valve 53, a water inlet pipeline manual valve 54, a water inlet pipeline pneumatic valve 55 and a water inlet pipeline on-line flowmeter 56 so as to control the water inflow of sewage into the biological filter 1 through the water inlet pipeline 5 and prevent the sewage from flowing back.
In some embodiments, the biological filter 1 comprises at least two sub-biological filters, each of which is provided with a gas distribution pipeline 21.
Specifically, the baffle plate 12 is arranged in the biological filter 1 to baffle the filter cells to form at least two sub biological filters so as to increase the hydraulic retention time and improve the treatment effect of the biological filter 1.
Specifically, in order to ensure the oxygen content in each biological filter 1, each sub-biological filter is provided with a gas distribution pipeline 21, that is, the aeration assembly 2 is provided to include a plurality of branches, and each branch corresponds to the sub-biological filter one by one. That is, in the aeration module 2, air is introduced into the aeration line 22 through the blower 210, the aeration line 22 includes a main aeration line 221 and branch aeration lines 222 for communicating the main aeration line 221 with the sub-biofilter, the main aeration line 221 serves as a main aeration line of the aeration module 2, the blower 210 communicates with the main aeration line 221, then, gas is introduced into each branch aeration line 222 through the main aeration line 221, and finally, is introduced into the corresponding distribution line 21 through the branch aeration line 222, so that aeration of the sub-biofilter is achieved.
In some embodiments, a main vent line check valve 25, a main vent line manual valve 26, and a main vent line electrically operated valve 27 are provided on the main vent line 221 to prevent backflow of gas and sewage. The main vent line 221 is further provided with a main vent line on-line pressure gauge 28 for detecting the pressure of the gas in the main vent line 221 and a main vent line on-line flow meter 29 for detecting the flow of the gas in the branch vent line 222.
In some embodiments, the high pressure gas flushing line 32 includes branch flushing lines 321 in one-to-one correspondence with the branch vent lines 222, the branch flushing lines 321 being in communication with the branch vent lines 222.
Since the aeration assembly 2 includes a plurality of branches, in order to clean the gas distribution pipeline 21 in each branch, the high-pressure gas flushing pipeline 32 includes a main flushing pipeline 322 and branch flushing pipelines 321, the number of branch flushing pipelines 321 is the same as that of the branch ventilation pipelines 222, and the branch flushing pipelines 321 are in one-to-one correspondence and communication with the branch ventilation pipelines 222. When cleaning a certain gas distribution pipeline 21, the aeration assembly 2 and the gas distribution pipeline 21 are stopped to supply gas, then the high-pressure cleaning assembly 3 is opened, so that high-pressure gas enters the branch pipe ventilation pipeline 222 from the branch flushing pipeline 321 and finally enters the gas distribution pipeline 21 to be cleaned, and the cleaning of the certain gas distribution pipeline 21 is realized.
Therefore, each branch ventilation pipeline 222 is provided with a branch ventilation electric valve 24 for controlling the on-off state of the branch ventilation pipeline 222 and the main ventilation pipeline 221, so as to realize independent control of each branch ventilation pipeline 222 and facilitate independent cleaning of the air distribution pipeline 21.
Specifically, the branch flushing line 321 is provided with a branch flushing line electric valve 34.
Specifically, the air compressor 31 is an air compressor, and the high-pressure cleaning assembly 3 further includes an air tank 33 for storing compressed air, so as to achieve air preservation. The air compressor is used as a high-pressure air source, and can generate high-pressure air, so that the air has a better air flushing effect, and the air compressor is lower in cost and more economical.
And, a main flushing line check valve 35 and a main flushing line manual valve 36 are provided in the high pressure cleaning assembly 3 to prevent gas and sewage from flowing back into the line.
In some embodiments, the system further comprises a branch vent line on-line pressure gauge 23 in communication with the branch vent line 222, and a programmable component 4 in signal communication with the branch vent line on-line pressure gauge 23, the aeration assembly 2, and the high pressure cleaning assembly 3.
In order to clean the air distribution pipeline 21 effectively in time, each branch pipe ventilation pipeline 222 is provided with a branch pipe ventilation pipeline on-line pressure gauge 23, the branch pipe ventilation pipeline on-line pressure gauge 23 is in signal connection with the program control part 4, a first preset air pressure value is set in the program control part 4 as an upper limit air pressure value in the branch pipe ventilation pipeline 222, and a second preset air pressure value is set as a trigger pressure value for stopping the high-pressure cleaning assembly 3. When the tested real-time air pressure value is greater than the first preset air pressure value, more pollutants and scale are accumulated at the air outlet of the air distribution pipeline 21, the air outlet quantity of the air distribution pipeline 21 is influenced, at this time, the program control part 4 controls the branch pipe ventilation electric valve 24 corresponding to the air distribution pipeline 21 to be cleaned in the aeration assembly 2 to be closed, and cuts off the communication between the branch pipe ventilation pipeline 222 corresponding to the air distribution pipeline 21 to be cleaned and the main ventilation pipeline 221, and simultaneously, the program control part 4 controls the high-pressure cleaning assembly 3 to work, and high-pressure air enters the air distribution pipeline 21 through the branch flushing pipeline 321 and the branch pipe ventilation pipeline 222, so that the cleaning effect on the air distribution pipeline 21 is realized.
In some embodiments, a manifold vent line on-line flow meter 211 is also provided on the manifold vent line 222 for detecting the flow of gas within the manifold vent line 222.
In some embodiments, a plurality of carrier fillers 11 are disposed in the biological filter 1, and a biological film is formed on the surface of the carrier fillers 11.
The carrier filler 11 is made of a macromolecular synthetic material with a netlike macroporous structure having a light specific gravity, so that a biomembrane is formed on the surface of the carrier filler 11. By arranging a plurality of carrier fillers 11 in the biological filter tank 1, biological treatment of sewage can be realized, in the aeration process, the carrier fillers 11 can be suspended in the filter tank, and the carrier fillers 11 can roll under the action of bubbles so as to realize surface water-air washing friction rolling, meanwhile, mutual friction can be generated between adjacent carrier fillers 11, aged biological films can be fallen off, metabolism of microorganisms on the surface of the carrier fillers 11 is promoted, additional backwashing is avoided, process operation is simplified, and system energy consumption and water consumption are reduced.
The high-pressure cleaning assembly 3 and the carrier filling 11 are arranged in the device, metabolism of the surface of the carrier filling 11 is promoted by friction rolling between the surface of the carrier filling 11 and water vapor flushing and friction between the adjacent carrier filling 11, backwash-free effect of the carrier filling 11 is achieved, high-pressure gas generated by the high-pressure cleaning assembly 3 generates large pressure and impact force on the gas outlet of the gas distribution pipeline 21, pollutants and scale at the gas outlet of the gas distribution pipeline 21 are far away from the gas distribution pipeline 21, and blocking phenomenon of the gas distribution pipeline 21 is effectively avoided. Therefore, the device achieves the effect of avoiding backwashing of the carrier packing 11 and avoiding blockage of the gas distribution pipeline 21.
Fig. 2 is a schematic diagram of a method for using an aeration filter device for treating high hardness wastewater according to an embodiment of the disclosure, and as shown in fig. 2, the disclosure further provides a method for using the aeration filter device for treating high hardness wastewater, including:
s101: starting the aeration assembly 2 and introducing gas into the biological filter 1;
s102: starting the high-pressure cleaning assembly when the air pressure value in the ventilation pipeline 22 of the aeration assembly 2 is larger than or equal to a first preset air pressure value or the working time of the aeration assembly 2 is larger than or equal to a first preset time;
s103: the air pressure value in the air passage 22 is smaller than a second preset air pressure value, or when the working time of the high-pressure cleaning assembly 3 is longer than or equal to the second preset time, the high-pressure cleaning assembly 3 stops working.
In the method, the aeration assembly 2 is started to aerate the biological filter 1 to provide oxygen for the aerobic reaction of sewage, and as the pollutants in the biological filter 1 are gradually increased in the process of treating the wastewater in the biological filter 1 and crystals are separated out and attached to the wall of the air distribution pipeline 21 in the process of treating the high-hardness wastewater in the biological filter 1, scaling phenomenon is generated, in order to timely remove the precipitated pollutants and the scale attached to the air distribution pipeline 21 to an exhaust port far away from the air distribution pipeline 21 to avoid the blockage of the air distribution pipeline 21, a first preset air pressure value is set in the program control part 4 as an upper limit air pressure value in the air distribution pipeline 22, a second preset air pressure value is set as a lower limit air pressure value in the air distribution pipeline 22, and meanwhile, a first preset time is set in the program control part 4. When the real-time air pressure value is greater than or equal to the first preset air pressure value or the working time of the aeration assembly 2 is greater than the first preset time, the program control component 4 controls the branch pipe ventilation electric valve 24 corresponding to the air distribution pipeline 21 to be cleaned in the aeration assembly 2 to be closed, and cuts off the communication between the ventilation pipeline 22 corresponding to the air distribution pipeline 21 to be cleaned and the blower 210, and simultaneously, the program control component 4 controls the high-pressure cleaning assembly 3 to work, and high-pressure air enters the air distribution pipeline 21 through the high-pressure air flushing pipeline 32 and the ventilation pipeline 22 to realize the cleaning effect on the air distribution pipeline 21.
When the air pressure value in the air passage 22 is smaller than the second preset air pressure value, the program control part 4 controls the high pressure cleaning part to stop working and communicates the blower 210 with the air passage 22.
Through once cleaning gas distribution pipeline 21 every interval a period, can prevent effectively that gas distribution pipeline 21 from blockking up and the pipe diameter diminishes, avoid the too big phenomenon of air-blower 210 load because gas distribution pipeline 21 blocks up in the aeration process to the electricity consumption has been reduced, aeration efficiency has been improved, has guaranteed the normal work of biological filter 1.
And through once wasing gas distribution pipeline 21 every a period of time, avoided gas distribution pipeline 21 to take place serious blocking phenomenon, can effectively avoid dismantling the pipeline of aeration subassembly 2 to use the medicament to wash, thereby reduced cost of labor and medicament cost.
In this embodiment, since the aeration assembly 2 is provided with a plurality of branches, each branch can be cleaned in sequence, and when cleaning a certain branch, the normal operation of the gas distribution pipeline 21 of other branches is not affected.
Specifically, detecting and judging the air pressure value in the ventilation line 22 of the aeration assembly 2 includes:
the pressure value in each branch ventilation pipe 222 is detected, and the pressure value in the branch ventilation pipe 222 is compared with a first preset air pressure value, and the branch ventilation pipe 222 having the detected pressure value greater than the first preset pressure value is communicated with the high-pressure cleaning assembly 3 according to the detection sequence.
In the method, the air pressure detection is carried out on the branch of each aeration assembly 2, and the branches exceeding the first preset air pressure value are sequentially cleaned according to the detection sequence, so that the aeration filter device for treating the high-hardness wastewater does not need to stop the machine and stop water when the air distribution pipeline 21 is cleaned, the sewage treatment can be continuously carried out, the operation efficiency of the aeration filter device for treating the high-hardness wastewater is ensured, and the cleaning cost of the air distribution pipeline 21 is reduced.
For example, the program control system may be configured to sequentially perform high-pressure pulse flushing of each of the gas distribution pipes 21 every 10 days, flushing all of the gas distribution pipes 21 once for one cycle, and cleaning the aeration assembly 2 for 3 to 5 cycles per operation of the high-pressure cleaning assembly 3. Or, when the blockage of a certain branch ventilation pipe 222 is serious and the pressure in the pipe exceeds the first preset pressure value, the air distribution pipe 21 can be cleaned independently, and the cleaning steps are as follows: the flushing is stopped for 3 minutes and for 1 minute until the pressure value of the branch ventilation line 222 is lower than the second preset pressure value, at which time the upper limit of the number of flushing times may be set to 5 times. Or, when the pressure value of the plurality of branch ventilation pipelines 222 is higher than the first preset pressure value, cleaning the gas distribution pipeline 21 with the pressure value exceeding the first preset pressure value according to the sequence of detection, wherein the cleaning steps are as follows: the flushing is stopped for 3 minutes and for 1 minute until the pressure value of the branch ventilation line 222 is lower than the second preset pressure value, at which time the upper limit of the number of flushing times of each branch ventilation line 222 may be set to 5 times.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown and described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A method of using a aerated filter apparatus for treating high hardness wastewater, the aerated filter apparatus comprising:
a biological filter (1);
the aeration assembly (2), the aeration assembly (2) comprises a gas distribution pipeline (21) arranged in the biological filter (1) and a ventilation pipeline (22) for supplying gas to the gas distribution pipeline (21);
the high-pressure cleaning assembly (3), the high-pressure cleaning assembly (3) comprises an air compressor (31) and a high-pressure gas flushing pipeline (32), one end of the high-pressure gas flushing pipeline (32) is communicated with the air compressor (31), and the other end of the high-pressure gas flushing pipeline is communicated with the ventilation pipeline (22);
the biological filter (1) comprises at least two sub biological filters, and each sub biological filter is internally provided with the gas distribution pipeline (21);
the two adjacent sub-biofilters are separated by a baffle plate (12), so that the biofilters (1) are baffled in a grid manner;
a plurality of carrier fillers (11) are suspended in the biological filter (1), and a biological film is formed on the surface of each carrier filler (11);
starting an aeration assembly (2) and introducing gas into the biological filter (1);
detecting and judging the air pressure value in the ventilation pipeline (22) of the aeration assembly (2), and simultaneously detecting and judging the working time of the aeration assembly (2); when the air pressure value in the ventilation pipeline (22) of the aeration assembly (2) is larger than or equal to a first preset air pressure value, or the working time of the aeration assembly (2) is larger than or equal to a first preset time, starting the high-pressure cleaning assembly (3);
and when the air pressure value in the ventilation pipeline (22) is smaller than a second preset air pressure value, or the working time of the high-pressure cleaning assembly (3) is larger than or equal to a second preset time, the high-pressure cleaning assembly (3) stops working.
2. A method of applying a aerated filter apparatus for treating high hardness wastewater according to claim 1, characterized in that the aeration line (22) comprises a main aeration line (221) and branch aeration lines (222) for communicating the main aeration line (221) with the sub-biofilters, the branch aeration lines (222) being in one-to-one correspondence with the sub-biofilters.
3. A method of using a aerated filter apparatus for treating high hardness wastewater according to claim 2, characterized in that the high pressure gas flushing line (32) comprises branch flushing lines (321) in one-to-one correspondence with the branch aeration lines (222), the branch flushing lines (321) being in communication with the branch aeration lines (222).
4. A method of using a aerated filter apparatus for treating high hardness wastewater according to claim 2, further comprising a branch ventilation line on-line pressure gauge (23), the branch ventilation line on-line pressure gauge (23) being in communication with the branch ventilation line (222).
5. A method of using a aerated filter apparatus for treating high hardness wastewater according to claim 2, further comprising a programmable component (4), the programmable component (4) being in signal connection with the aeration assembly (2) and the high pressure cleaning assembly (3), respectively.
6. A method of using a aerated filter apparatus for treating high hardness wastewater according to claim 2, wherein each of the branch ventilation pipes (222) is provided with a branch ventilation electrically operated valve (24) for controlling the on-off state of the branch ventilation pipe (222) and the main ventilation pipe (221).
7. A method of using an aerated filter apparatus for treating high hardness wastewater according to any of claims 2 to 6, wherein the detecting and judging the air pressure value in the aeration line (22) of the aeration assembly (2) comprises:
detecting the pressure value in each branch ventilation pipeline (222), comparing the pressure value in the branch ventilation pipeline (222) with the first preset air pressure value, and communicating the branch ventilation pipeline (222) with the detected pressure value being larger than the first preset pressure value with the high-pressure cleaning assembly (3) according to the detection sequence.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2848842Y (en) * | 2005-12-20 | 2006-12-20 | 沈阳建筑大学 | Aeration biological filtering chamber |
| CN209287057U (en) * | 2018-01-24 | 2019-08-23 | 湖北锐迈环保有限公司 | A kind of aerator cleaning system |
| CN214829290U (en) * | 2020-11-17 | 2021-11-23 | 金科环境股份有限公司 | Aeration filter tank device for treating high-hardness wastewater |
-
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2848842Y (en) * | 2005-12-20 | 2006-12-20 | 沈阳建筑大学 | Aeration biological filtering chamber |
| CN209287057U (en) * | 2018-01-24 | 2019-08-23 | 湖北锐迈环保有限公司 | A kind of aerator cleaning system |
| CN214829290U (en) * | 2020-11-17 | 2021-11-23 | 金科环境股份有限公司 | Aeration filter tank device for treating high-hardness wastewater |
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