CN116943312B - Interception system for sewage treatment - Google Patents
Interception system for sewage treatment Download PDFInfo
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- CN116943312B CN116943312B CN202311219229.XA CN202311219229A CN116943312B CN 116943312 B CN116943312 B CN 116943312B CN 202311219229 A CN202311219229 A CN 202311219229A CN 116943312 B CN116943312 B CN 116943312B
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- 239000010865 sewage Substances 0.000 title claims abstract description 74
- 238000011282 treatment Methods 0.000 title claims abstract description 46
- 238000004140 cleaning Methods 0.000 claims abstract description 78
- 239000007787 solid Substances 0.000 claims abstract description 73
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 73
- 239000002245 particle Substances 0.000 claims abstract description 47
- 241001417527 Pempheridae Species 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000001125 extrusion Methods 0.000 claims abstract description 5
- 239000012535 impurity Substances 0.000 claims description 76
- 238000007790 scraping Methods 0.000 claims description 32
- 238000001914 filtration Methods 0.000 claims description 24
- 239000011148 porous material Substances 0.000 claims description 24
- 238000005507 spraying Methods 0.000 claims description 20
- 239000002351 wastewater Substances 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 19
- 238000004062 sedimentation Methods 0.000 claims description 19
- 230000000694 effects Effects 0.000 claims description 15
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 9
- 230000001960 triggered effect Effects 0.000 claims description 9
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 8
- 230000001276 controlling effect Effects 0.000 claims description 7
- 238000007689 inspection Methods 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000001556 precipitation Methods 0.000 claims description 6
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000008602 contraction Effects 0.000 claims description 3
- 230000003116 impacting effect Effects 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000013049 sediment Substances 0.000 abstract description 2
- 238000012545 processing Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000011369 optimal treatment Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
- B01D29/58—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection arranged concentrically or coaxially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
- B01D29/6407—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
- B01D29/6469—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/70—Regenerating the filter material in the filter by forces created by movement of the filter element
- B01D29/72—Regenerating the filter material in the filter by forces created by movement of the filter element involving vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
- B01D35/143—Filter condition indicators
- B01D35/1435—Filter condition indicators with alarm means
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
Abstract
The invention relates to the technical field of sewage treatment, in particular to an interception system for sewage treatment, which comprises the following components: the system comprises a water inlet module, an interception module, a cleaning module, a detection alarm module and a control module, wherein the water inlet module is used for adjusting the flow of sewage entering the system, the interception module is used for intercepting solid suspended matters, large particles and sediments entering a pipeline through interception plates with different apertures, the interception module is prevented from entering the downstream, the cleaning module is additionally provided with a pneumatic sweeper technology, the interception module is regularly cleaned and maintained through the functions of impact, extrusion and vibration, the normal operation of the interception module is ensured, the control module is used for managing and coordinating the operation of each module, the water inlet flow is adjusted, the cleaning operation is controlled, the alarm signal is processed, the whole interception system is used for efficiently intercepting dirt and solid matters in the sewage, the smooth proceeding of the sewage treatment process is ensured, and the performance and the reliability of the system are improved.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to an interception system for sewage treatment.
Background
Sewage treatment is an important environmental engineering technology, and aims to remove harmful substances from sewage from urban, industrial, household and other sources so as to protect water resources and ecological environment health. The sewage treatment process comprises the stages of water inlet, preliminary treatment, biological treatment, chemical treatment, solid-liquid separation and the like, so as to convert sewage into safe and dischargeable water bodies or reusable resources. However, during sewage treatment, the presence of suspended matter, solid particles, precipitates, and other impurities can adversely affect the system equipment and processes, reducing the treatment effectiveness and the life of the treatment units.
Chinese patent publication No.: CN115818903B discloses a sewage treatment system, comprising an interception box, wherein a collection cavity is arranged in the interception box, a filter box is fixedly arranged on the inner wall of the top end of the collection cavity, a front-back through water passing cavity is arranged in the filter box, symmetrical rotating grooves are formed in the left inner wall and the right inner wall of the water passing cavity and communicated with the collection cavity, and an interception device is arranged in the rotating grooves; but the invention does not consider the complexity of replacing the screen or the manual problem.
Disclosure of Invention
Therefore, the invention provides an interception system for sewage treatment, which is used for solving the problem of low interception and filtration efficiency caused by intermittent filter screen replacement of the interception system for sewage treatment in the prior art.
To achieve the above object, the present invention provides an interception system for sewage treatment, comprising:
a water inlet module connected to a sewage discharge end of the sewage discharge system for providing a sewage transmission path to receive and guide sewage wastewater into a corresponding sewage treatment location;
the interception module is connected with the water inlet module and is used for intercepting and filtering solid impurities in the sewage and wastewater through a plurality of interception devices of a plurality of interception plates with different apertures arranged in a water inlet pipeline of the water inlet module;
the cleaning module is respectively connected with the water inlet module and the interception module, and is used for scraping impurities attached to the interception plate through a plurality of scraping plates, and enabling the solid impurities on the interception plate to be separated from the interception plate through the impact of air flow on holes on the interception plate;
the detection alarm module is respectively connected with the water inlet module and the interception module and is used for monitoring various operation parameters in the operation of the interception system and sending out alarm signals under the condition of abnormal parameters;
the control module is respectively connected with the water inlet module, the interception module, the cleaning module and the detection alarm module, and is used for determining the working mode of the cleaning module according to whether the operation parameters trigger a preset early warning value or not and adjusting according to the operation parameters in the determined working mode;
the operation parameters comprise the liquid level difference delta H of sewage and wastewater at the interception side and the filtration side of the interception plate, the pressure difference delta P of sewage and wastewater at the interception side and the filtration side of the interception plate and the flow Q of sewage and wastewater at the interception side of the interception plate.
Further, the water inlet module includes:
the inlet pipeline is a four-stage ladder-shaped pipeline, the horizontal heights of the pipelines at each stage are sequentially reduced, the inlet ends of the second pipeline, the third pipeline and the fourth pipeline are respectively provided with a plurality of interception plates with different apertures, a solid impurity sedimentation tank is arranged between the interception end of the interception plate and the pipeline at the upper stage, the horizontal height of the bottom of the solid impurity sedimentation tank is equal to the height of the bottom of the interception plate, and the solid impurity sedimentation tank is used for storing the solid impurities intercepted by the interception plate, secondarily separating the intercepted solid impurities and separating a liquid part;
and the water inlet regulating valve is arranged at the inlet of the inlet pipeline connected with the sewage discharge end and is used for controlling the water inlet flow of sewage and wastewater entering the inlet pipeline.
Further, the interception module comprises a first interception device arranged at the inlet end of the second pipeline, a second interception device arranged at the inlet end of the third pipeline and a third interception device arranged at the inlet end of the fourth pipeline;
each interception device intercepts the solid impurities with different particle sizes respectively, wherein,
a first interception device provided with a grid having a first aperture to intercept solid impurities having a particle size larger than the first particle size;
a second interception device provided with a grid with a second aperture to intercept solid impurities having a particle size larger than the second particle size;
a third interception device provided with a filter screen to intercept solid impurities having a particle size larger than a third particle size;
the first pore diameter is smaller than the first particle diameter, the second pore diameter is smaller than the second particle diameter, the pore diameter of the filter screen is smaller than the third particle diameter, the first pore diameter is larger than the second pore diameter, the second pore diameter is larger than the pore diameter of the filter screen, the first particle diameter is larger than the second particle diameter, and the second particle diameter is larger than the third particle diameter.
Further, the cleaning module includes a first cleaning unit provided at an interception side of each interception device to scrape off solid foreign matters attached to the grill or the filter screen, and a second cleaning unit provided at a filtration side of each interception device to strike the holes of the grill or the filter screen by an air flow, wherein:
the single one of said first cleaning units comprises,
a scraper connected to the single interception device for scraping off solid impurities and dirt attached to the interception device so that the sewage and wastewater flows in the inlet pipe through the through hole of the interception device;
the spraying equipment is connected with the single interception device, and sprays water liquid and/or cleaning liquid to flush solid impurities on the surface of the interception device, so that the solid impurities attached to the scraping plate and/or the surface of the interception device are flushed away;
and an ultrasonic cleaning assembly installed on the scraping plate to decompose and remove dirt and solid impurities attached to the interception device by high-frequency vibration generated by ultrasonic waves.
Further, the second cleaning unit includes:
the pneumatic sweeper is arranged on the filtering side of the interception plate and consists of an air bag, a pressure piston and an air storage tank, and dirt and attachments on each interception device are removed by utilizing the force and vibration effect generated by expansion and contraction of the air bag;
an automatic curling mechanism is arranged in the air bag to automatically curl the deflated air bag, so that the air bag is restrained in a curled state in an uninflated state, and the air bag is released from being restrained when inflated, so that the air bag is gradually inflated, wherein the inflation direction of the air bag is the same as the deflation direction of the air bag, and the deflation direction of the air bag is opposite to the inflation direction;
the pressure piston is connected with the air bag and used for controlling whether the air bag is inflated or not, when the lateral pressure of the intercepting device is intercepted and increased, the pressure piston is extruded to inflate the air bag, when the air pressure in the air bag is equal to the air pressure of the intercepting device at the intercepting side, the air bag is continuously inflated to the air bag through the air storage tank, and when the air pressure in the air bag reaches the critical value of the air bag, the air is deflated to the direction of the intercepting plate, so that impact and extrusion effects are generated, and attachments are separated from the surface of the intercepting plate.
Further, the cleaning module is preset with a plurality of working modes, including:
the working frequency of the scraping plate and the spraying equipment is corresponding to a preset standard frequency;
the first working mode is used for adjusting the working frequencies of the scraping plate and the spraying equipment according to the ratio of the flow Q of the interception side of the interception plate to the corresponding flow threshold value;
a second mode of operation in which the ultrasonic cleaning assembly of the first cleaning unit is activated;
and a third mode of operation in which the pneumatic sweeper is activated.
Further, the control module determines the working mode of the cleaning module according to whether the operation parameters trigger corresponding preset early warning values;
if the first early warning condition is triggered, the cleaning module judges that the working mode is adjusted to the first working mode;
if a second early warning condition is triggered, the cleaning module judges that the working mode is adjusted to a second working mode;
if a third early warning condition is triggered, the cleaning module judges that the working mode is adjusted to a third working mode;
the first early warning condition meets the condition that the flow Q of the interception side of the interception plate exceeds a preset early warning flow range;
the second early warning condition meets the condition that the current pressure difference delta P between the interception side and the filtering side of the interception plate is larger than a preset critical pressure difference;
the third early warning condition meets the condition that the detection value of the liquid level difference delta H between the interception side and the filtering side of the interception plate is larger than the preset standard liquid level difference value.
Further, the control module controls the working state of the water inlet regulating valve of the water inlet module according to whether the third working mode is started or not;
after triggering the third early warning condition and before starting the third working mode, the control module closes or screws the water inlet regulating valve to stop water inlet of the water inlet pipeline or reduce water inlet quantity of the water inlet pipeline.
Further, each of the solid impurity precipitation tanks is provided with an inspection well for cleaning impurities deposited in the solid impurity precipitation tank after the third working mode is started out of the solid impurity precipitation tank.
Further, the cleaning module adjusts the working frequency of the scraping plate and the spraying equipment according to the ratio of the flow Q of the interception side of the interception plate to the preset flow value Q0 in the first working mode, sets the adjusted working frequency as P,wherein P0 is the preset standard working frequency of the scraping plate and the spraying equipment, Q is the current flow of the interception side of the interception plate, and Q0 is the preset flow of the interception side of the interception plate.
Compared with the prior art, the invention has the beneficial effects that the interception module can effectively intercept solid suspended matters, large particles and sediments entering the pipeline through the interception plates with different apertures, prevent the solid matters from entering the downstream processing unit, lighten the load of processing equipment, prolong the service life of the processing equipment and improve the processing effect of the whole sewage processing system.
Further, the cleaning module adopts a pneumatic sweeper device, and can clean and maintain the interception module through impact, extrusion and vibration, so that dirt and solid substances on the interception plate are effectively removed, and the normal operation and high-efficiency interception capability of the interception module are ensured.
Further, the water inlet module can control the water inlet flow by adjusting the sewage flow entering the system, so that the load of the system is balanced, the adverse effect of the excessive or insufficient flow on the treatment effect is prevented, and the running stability and the treatment capacity of the system are improved.
Further, the control module manages and coordinates each module, including adjusting inflow, controlling cleaning operation, processing alarm signals, etc., which makes the whole interception system operate more efficiently, ensures smooth proceeding of sewage treatment process, and improves performance and reliability of the system.
Drawings
FIG. 1 is a connection diagram of an interception system for sewage treatment according to an embodiment of the present invention;
FIG. 2 is a schematic view of an inlet pipeline structure of an interception system for sewage treatment according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating the operation of a single interception location of an interception system for sewage treatment in accordance with an embodiment of the present invention;
in the figure: 1, a first interception device; 2, a second interception device; 3, a third interception device; 4, a solid impurity sedimentation tank; 5, scraping plates; 6, ultrasonic cleaning the assembly; and 7, a pneumatic sweeper.
Detailed Description
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Fig. 1 to 3 are respectively a connection diagram of an interception system for sewage treatment according to an embodiment of the present invention, a schematic view of an inlet pipeline structure of the interception system for sewage treatment according to an embodiment of the present invention, and a schematic view of a single interception position of the interception system for sewage treatment according to an embodiment of the present invention.
Referring to fig. 1, the present invention provides an interception system for sewage treatment, comprising:
a water inlet module connected to a sewage discharge end of the sewage discharge system for providing a sewage transmission path to receive and guide sewage into a corresponding sewage treatment location, and providing a sewage inlet path to the system for allowing sewage to flow into a subsequent treatment unit;
the interception module is connected with the water inlet module and is used for intercepting and filtering solid impurities in the sewage and wastewater through a plurality of interception devices of which the inside of a water inlet pipeline of the water inlet module is provided with a plurality of interception plates with different apertures, preventing the solid impurities from entering a subsequent treatment process and reducing the treatment load of the treatment system;
the cleaning module is respectively connected with the water inlet module and the interception module and is used for scraping impurities attached to the interception plate through the plurality of scraping plates 5, and enabling the solid impurities on the interception plate to be separated from the interception plate through the impact of air flow on the holes on the interception plate so as to prevent the interception plate from being blocked;
the detection alarm module is respectively connected with the water inlet module and the interception module and is used for monitoring various operation parameters in the operation of the interception system and sending out alarm signals under the condition of abnormal parameters;
the control module is respectively connected with the water inlet module, the interception module, the cleaning module and the detection alarm module, and is used for determining the working mode of the cleaning module according to whether the operation parameters trigger a preset early warning value or not and adjusting according to the operation parameters in the determined working mode;
the operation parameters comprise the liquid level difference delta H of sewage and wastewater at the interception side and the filtration side of the interception plate, the pressure difference delta P of sewage and wastewater at the interception side and the filtration side of the interception plate and the flow Q of sewage and wastewater at the interception side of the interception plate.
Specifically, once an abnormal condition occurs in the system, such as equipment failure, leakage, overload, etc., the alarm module immediately gives an alarm to remind an operator to take necessary measures to prevent the occurrence of system failure or danger. The interception plates with different apertures can effectively intercept large particulate matters and impurities, protect system equipment from damage and improve the treatment effect.
Referring to fig. 2, the present invention provides an interception system for sewage treatment, wherein a water inlet module comprises:
the inlet pipeline is a four-stage ladder-shaped pipeline, the horizontal heights of the pipelines at each stage are sequentially reduced, the inlet ends of the second pipeline, the third pipeline and the fourth pipeline are respectively provided with a plurality of interception plates with different apertures, a solid impurity sedimentation tank 4 is arranged between the interception end of the interception plate and the pipeline at the upper stage, the horizontal height of the bottom of the solid impurity sedimentation tank 4 is equal to the height of the bottom of the interception plate, and the solid impurity sedimentation tank is used for storing the solid impurities intercepted by the interception plate, secondarily separating the intercepted solid impurities and separating a liquid part;
and the water inlet regulating valve is arranged at the inlet of the inlet pipeline connected with the sewage discharge end and is used for controlling the water inlet flow of sewage and wastewater entering the inlet pipeline.
Specifically, through the arrangement of the stepped pipeline and the interception device, the solid impurities are effectively intercepted and filtered in the water inlet process and stored in the solid impurity sedimentation tank 4, the solid impurity sedimentation tank 4 provides a space for accommodating and storing the solid impurities, and the liquid part in the intercepted solid impurities is separated and enters the next-stage pipeline, so that the influence of the solid impurities on a system is further reduced, and the subsequent treatment is facilitated; the presence of the inflow regulator valve allows the system to precisely control and regulate the inflow, ensuring that the treatment system treats a predetermined amount of water to achieve an optimal treatment effect, while protecting the system from the adverse effects of excessive or insufficient flows.
The interception module comprises a first interception device 1 arranged at the inlet end of a second pipeline, a second interception device 2 arranged at the inlet end of a third pipeline and a third interception device 3 arranged at the inlet end of a fourth pipeline;
each interception device intercepts the solid impurities with different particle sizes respectively, wherein,
a first interception device 1 provided with a grating of a first aperture to intercept solid impurities having a particle size larger than the first particle size;
a second interception device 2 provided with a grid of a second aperture to intercept solid impurities having a particle size larger than the second particle size;
a third interception device 3 provided with a filter screen to intercept solid impurities having a particle size larger than a third particle size;
the first pore diameter is smaller than the first particle diameter, the second pore diameter is smaller than the second particle diameter, the pore diameter of the filter screen is smaller than the third particle diameter, the first pore diameter is larger than the second pore diameter, the second pore diameter is larger than the pore diameter of the filter screen, the first particle diameter is larger than the second particle diameter, and the second particle diameter is larger than the third particle diameter.
As an embodiment, for example, the first interception means 1 is equipped with a coarse grating having a pore size of 30 mm, the second interception means 2 is equipped with a fine grating having a pore size of 5 mm, and the third interception means 3 has a sieve pore size of 0.5 mm; by arranging the interception plates with different apertures, the method can meet the interception requirements of solid impurities with different particle diameters, realize effective graded filtration and interception, intercept the particulate matters with different particle diameters step by step, purify the water more effectively and improve the treatment efficiency of the whole system; the intercepted solid impurities are separated and stored in the corresponding sedimentation tanks, so that the utilization rate of the storage capacity can be improved, the cleaning period of the sedimentation tanks is prolonged, and the maintenance frequency of the system is reduced.
Referring to fig. 3, the cleaning module of the present invention includes a first cleaning unit disposed on an interception side of each interception device for scraping off solid impurities attached to the grill or the filter screen, and a second cleaning unit disposed on a filtering side of each interception device for impacting holes of the grill or the filter screen by an air flow, wherein:
the single one of said first cleaning units comprises,
a scraper 5 connected to the single interception device for scraping off solid impurities and dirt attached to the interception device so that the sewage and wastewater flows in the inlet pipe through the through holes of the interception device, the through holes including grid holes and filter screen holes;
the spraying equipment is connected with the single interception device, and sprays water liquid and/or cleaning liquid to flush solid impurities on the surface of the interception device, so that the solid impurities attached to the scraping plate 5 and/or the surface of the interception device are flushed away;
an ultrasonic cleaning assembly 6 mounted on the brush and/or the scraper 5 for decomposing and removing dirt and solid foreign matters adhering to the interception means by high-frequency vibration generated by ultrasonic waves, and the scraper may be provided with a brush as a possible way.
The second cleaning unit of the present invention includes:
the pneumatic sweeper is arranged on the filtering side of the interception plate and consists of an air bag, a pressure piston and an air storage tank, and dirt and attachments on each interception device are removed by utilizing the force and vibration effect generated by expansion and contraction of the air bag;
an automatic curling mechanism is arranged in the air bag to automatically curl the deflated air bag, so that the air bag is restrained in a curled state in an uninflated state, and the air bag is released from being restrained when inflated, so that the air bag is gradually inflated, wherein the inflation direction of the air bag is the same as the deflation direction of the air bag, the rolling direction of the deflated air bag is opposite to the inflation direction, and the automatic curling mechanism enables the air bag to recover the curled state when not in use;
the pressure piston is connected with the air bag and used for controlling whether the air bag is inflated or not, when the lateral pressure of the intercepting device is intercepted and increased, the pressure piston is extruded to inflate the air bag, when the air pressure in the air bag is equal to the air pressure of the intercepting device at the intercepting side, the air bag is continuously inflated to the air bag through the air storage tank, and when the air pressure in the air bag reaches the critical value of the air bag, the air is deflated to the direction of the intercepting plate, so that impact and extrusion effects are generated, and attachments are separated from the surface of the intercepting plate.
Specifically, the conventional and non-conventional cleaning devices in the cleaning module are comprehensively used, so that solid impurities and dirt can be efficiently removed, the good running state of the interception system is maintained, and smooth water flow and high-quality cleaning effect are ensured.
The cleaning module of the invention is preset with a plurality of working modes, comprising:
the normal working mode is to start the scraping plate 5 and the spraying equipment device in the first cleaning unit, wherein the working frequencies of the scraping plate 5 and the spraying equipment device are corresponding preset standard frequencies;
the first working mode is used for adjusting the working frequencies of the scraping plate 5 and the spraying equipment according to the ratio of the flow Q of the interception side of the interception plate to a preset flow value;
a second operating mode, which enables the ultrasonic cleaning assembly 6 of the first cleaning unit;
and a third mode of operation, the third mode of operation enabling the pneumatic sweeper.
Specifically, through setting for different working modes, the cleaning module can carry out nimble cleaning operation according to actual demand to provide high-efficient, comprehensive cleaning effect, and ensure interception system's normal operating and long-term stability.
The control module of the invention triggers the adjustment of the early warning value and the corresponding working mode by monitoring the following operation parameters:
first early warning condition: the flow of the interception side of the interception plate exceeds a preset early warning flow range (Q > Q1).
Second early warning condition: the pressure difference between the interception side and the filtration side of the interception plate is larger than a preset critical pressure difference (deltap > deltap 1).
Third early warning condition: the liquid level difference detection value of the interception side and the filtering side of the interception plate is larger than a preset standard liquid level difference value (delta H > delta H1).
From these conditions we can define three modes of operation:
first operation mode: the cleaning module is suitable for a normal operation state, and when a first early warning condition (Q & gtQ 1) is triggered, the cleaning module adjusts the working mode to a first working mode. In this mode of operation, the system continues to function normally, but may require routine maintenance and monitoring.
Second mode of operation: the cleaning module adjusts the working mode to the second working mode when the second early warning condition (delta P > delta P1) is triggered. In this mode of operation, the system will perform some automated adjustment and cleaning operations to ensure proper filtration.
Third mode of operation: when the third early warning condition (delta H > delta H1) is triggered, the cleaning module adjusts the working mode to a third working mode. In this mode of operation, the system will perform full service and cleaning operations, possibly requiring downtime and maintenance.
Specifically, the control module dynamically adjusts the working mode of the cleaning module according to actual conditions, can more accurately cope with different early warning conditions, and provides a customized cleaning scheme, so that the system is effectively maintained and managed, and the reliability of the interception plate and the effective utilization of water resources are ensured.
The control module of the invention controls the working state of the water inlet regulating valve of the water inlet module according to whether the third working mode is started or not;
after triggering the third early warning condition and before starting the third working mode, the control module closes or screws the water inlet regulating valve to stop water inlet of the water inlet pipeline or reduce water inlet quantity of the water inlet pipeline.
Specifically, after triggering the third early warning condition, the control module takes measures in time, limits the water inflow through adjusting the water inflow regulating valve, prevents the overload of the system or the incapability of normal operation of the interception plate caused by excessive water inflow, reduces the pressure and the liquid level difference by reducing or stopping water inflow, provides better working conditions for the cleaning module, simultaneously avoids unnecessary loss or faults, improves the energy efficiency of the system, reduces waste, and improves the efficiency and the performance of the cleaning module to the maximum extent.
According to the invention, each solid impurity sedimentation tank 4 is provided with an inspection well, so that impurities deposited in the solid impurity sedimentation tank 4 after the third working mode is started can be cleaned out of the solid impurity sedimentation tank 4.
Specifically, the inspection well is arranged to facilitate regular inspection and maintenance of the solid impurity sedimentation tank 4 so as to ensure the cleaning effect and normal operation of the system, operators can monitor the impurity condition in the sedimentation tank at any time and timely take cleaning measures to avoid blockage or operation blockage of the interception plate caused by excessive impurity accumulation; the arrangement of the inspection well also provides the functions of visualizing and monitoring the precipitated impurities, and operators can intuitively observe and evaluate the conditions of the impurities in the precipitation tank, so that more effective cleaning plans and strategies are formulated, and the cleaning efficiency and quality are improved; through the inspection shaft, operating personnel can directly get into the sedimentation tank inside, thoroughly clear up it, reduced interference and down time to the system operation.
The cleaning module of the invention adjusts the working frequency of the scraping plate 5 and the spraying equipment according to the ratio of the flow Q of the interception side of the interception plate to the preset flow value Q0 in the first working mode, sets the adjusted working frequency as P,wherein P0 is the preset standard working frequency of the scraping plate 5 and the spraying equipment, Q is the current flow of the interception side of the interception plate, and Q0 is the preset flow of the interception side of the interception plate.
As an implementation manner, the preset flow rate of the interception side of the interception plate, the preset standard working frequency of the scraping plate and the preset standard working frequency of the spraying equipment are correspondingly set according to each interception device, the preset flow rate of the interception side of the interception plate and the preset standard working frequency of the scraping plate and the preset standard working frequency of the spraying equipment can simulate the operation of the system under preset working conditions by using fluid mechanics simulation software or engineering simulation tools, and the influence of different working frequencies on the performance of the system is evaluated, so that the proper preset working frequency is determined.
In practical applications, for example, the preset flow rate on the flow rate interception plate interception side of the first interception device of the interception system that is matched with the sewage discharge system of the residential area may be set as:
assuming that the residential sewage flow is 100 m 3/day, the preset flow may be set in the range of 70% to 90%. Thus, the preset flow rate may be set between 70 m 3/day and 90m 3/day;
the preset standard operating frequency of the squeegee may be set to: 2 times per hour;
the preset standard operating frequency of the spray equipment may be set as: 3 times per day, once in the morning, in the middle and in the evening.
The air storage tank in the pneumatic sweeper of the invention is inflated after the cleaning module is deflated in the third working mode until the air storage tank is full.
Specifically, in normal operation or other modes of operation, the air reservoir may be sufficiently supplied with air in preparation for the need during cleaning to ensure that the pneumatic sweeper 7 is activated to achieve sufficient air pressure and air supply when needed to ensure efficient cleaning operations.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
The foregoing description is only of the preferred embodiments of the invention and is not intended to limit the invention; various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. An interception system for sewage treatment, comprising:
a water inlet module connected to a sewage discharge end of the sewage discharge system for providing a sewage transmission path to receive and guide sewage wastewater into a corresponding sewage treatment location, comprising an inlet pipe and a water inlet regulating valve;
the inlet pipeline is a four-stage ladder-shaped pipeline, the horizontal heights of the pipelines at each stage are sequentially reduced, a plurality of interception plates with different apertures are arranged at the inlet ends of the second pipeline, the third pipeline and the fourth pipeline, a solid impurity sedimentation tank is arranged between the interception end of the interception plate and the pipeline at the upper stage, and the horizontal height of the bottom of the solid impurity sedimentation tank is equal to the height of the bottom of the interception plate and is used for storing solid impurities intercepted by the interception plate;
the water inlet regulating valve is arranged at the inlet of the inlet pipeline connected with the sewage discharge end and is used for controlling the water inlet flow of sewage and wastewater entering the inlet pipeline;
the interception module is connected with the water inlet module and is used for intercepting and filtering solid impurities in the sewage and wastewater through a plurality of interception devices arranged in a water inlet pipeline of the water inlet module, and each interception device corresponds to an interception plate with different apertures;
the cleaning module is respectively connected with the water inlet module and the interception module and comprises a first cleaning unit and a second cleaning unit, wherein the first cleaning unit is arranged on the interception side of each interception device and used for scraping solid impurities attached to a grid or a filter screen, and the second cleaning unit is arranged on the filtration side of each interception device and used for impacting holes on the grid or the filter screen through air flow;
the first cleaning unit comprises a scraping plate, spraying equipment and an ultrasonic cleaning assembly;
the scraping plate is connected with the single interception device and is used for scraping solid impurities attached to the interception device so that sewage and wastewater flow in the inlet pipeline through the through holes of the interception device;
the spraying equipment is connected with the single interception device, and solid impurities attached to the scraping plate and/or the surface of the interception device are washed away by spraying water and/or cleaning liquid to wash away the solid impurities on the surface of the interception device;
the ultrasonic cleaning component is arranged on the scraping plate and is used for decomposing and removing solid impurities attached to the interception device through high-frequency vibration generated by ultrasonic waves;
the second cleaning unit comprises a pneumatic sweeper;
the pneumatic sweeper is arranged on the filtering side of the interception plate and consists of an air bag, a pressure piston and an air storage tank, and solid impurities on each interception device are removed by utilizing the force and vibration effect generated by expansion and contraction of the air bag;
an automatic curling mechanism is arranged in the air bag to automatically curl the deflated air bag, so that the air bag is restrained in a curled state in an uninflated state, and the air bag is released from being restrained when inflated, so that the air bag is gradually inflated, wherein the inflation direction of the air bag is the same as the deflation direction of the air bag, and the deflation direction of the air bag is opposite to the inflation direction;
the pressure piston is connected with the air bag and used for controlling whether the air bag is inflated or not, when the lateral pressure of the intercepting device is increased, the pressure piston is extruded to inflate the air bag, when the air pressure in the air bag is equal to the air pressure of the intercepting device on the intercepting side, the air bag is continuously inflated to the air bag through the air storage tank, and when the air pressure in the air bag reaches the critical value of the air bag, the air is deflated to the direction of the intercepting plate, so that impact and extrusion effects are generated, and solid impurities are separated from the surface of the intercepting plate;
the detection alarm module is respectively connected with the water inlet module and the interception module and is used for monitoring various operation parameters in the operation of the interception system and sending out alarm signals under the condition of abnormal parameters;
the control module is respectively connected with the water inlet module, the interception module, the cleaning module and the detection alarm module, and is used for determining the working mode of the cleaning module according to whether the operation parameters trigger a preset early warning value or not and adjusting according to the operation parameters in the determined working mode;
the operation parameters comprise the liquid level difference delta H of sewage and wastewater at the interception side and the filtration side of the interception plate, the pressure difference delta P of sewage and wastewater at the interception side and the filtration side of the interception plate and the flow Q of sewage and wastewater at the interception side of the interception plate;
wherein, cleaning module presets a plurality of operating modes, includes:
the method comprises the steps of in a normal working mode, starting a scraping plate and spraying equipment in a first cleaning unit, wherein the working frequencies of the scraping plate and the spraying equipment are corresponding preset standard frequencies;
the first working mode is used for adjusting the working frequencies of the scraping plate and the spraying equipment according to the ratio of the flow Q of the interception side of the interception plate to the corresponding flow threshold;
a second mode of operation, enabling the ultrasonic cleaning assembly of the first cleaning unit;
a third mode of operation, starting the pneumatic sweeper;
the control module determines the working mode of the cleaning module according to whether the operation parameters trigger corresponding preset early warning values or not;
if the first early warning condition is triggered, the cleaning module judges that the working mode is adjusted to the first working mode;
if a second early warning condition is triggered, the cleaning module judges that the working mode is adjusted to a second working mode;
if a third early warning condition is triggered, the cleaning module judges that the working mode is adjusted to a third working mode;
the first early warning condition meets the condition that the flow Q of the interception side of the interception plate exceeds a preset early warning flow range;
the second early warning condition meets the condition that the current pressure difference delta P between the interception side and the filtering side of the interception plate is larger than a preset critical pressure difference;
the third early warning condition meets the condition that the detection value of the liquid level difference delta H between the interception side and the filtering side of the interception plate is larger than the preset standard liquid level difference value.
2. The intercepting system for sewage treatment according to claim 1, wherein said intercepting module comprises a first intercepting means provided at an inlet end of a second pipe, a second intercepting means provided at an inlet end of a third pipe, and a third intercepting means provided at an inlet end of a fourth pipe;
each interception device intercepts the solid impurities with different particle sizes respectively, wherein,
a first interception device provided with a grid having a first aperture to intercept solid impurities having a particle size larger than the first particle size;
a second interception device provided with a grid with a second aperture to intercept solid impurities having a particle size larger than the second particle size;
a third interception device provided with a filter screen to intercept solid impurities having a particle size larger than a third particle size;
the first pore diameter is smaller than the first particle diameter, the second pore diameter is smaller than the second particle diameter, the pore diameter of the filter screen is smaller than the third particle diameter, the first pore diameter is larger than the second pore diameter, the second pore diameter is larger than the pore diameter of the filter screen, the first particle diameter is larger than the second particle diameter, and the second particle diameter is larger than the third particle diameter.
3. The intercepting system for sewage treatment according to claim 2, wherein said control module controls an operation state of a water inlet regulating valve of the water inlet module according to whether the third operation mode is activated;
after triggering the third early warning condition and before starting the third working mode, the control module closes or screws the water inlet regulating valve to stop water inlet of the water inlet pipeline or reduce water inlet quantity of the water inlet pipeline.
4. The intercepting system for sewage treatment according to claim 3, wherein each of said solid impurity precipitation tanks is provided with an inspection well for cleaning out impurities deposited in the solid impurity precipitation tank after said third operation mode is started.
5. The interception system for sewage treatment according to claim 4, wherein said cleaning module adjusts the operating frequencies of said scraper and shower equipment according to the ratio of the flow Q of the interception side of said interception plate to a preset flow value Q0 in the first operation mode, sets the adjusted operating frequency to P,wherein P0 is the preset standard working frequency of the scraping plate and the spraying equipment, Q is the current flow of the interception side of the interception plate, and Q0 is the preset flow of the interception side of the interception plate.
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| CN202311219229.XA CN116943312B (en) | 2023-09-21 | 2023-09-21 | Interception system for sewage treatment |
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| CN202311219229.XA CN116943312B (en) | 2023-09-21 | 2023-09-21 | Interception system for sewage treatment |
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| CN116943312A (en) | 2023-10-27 |
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