Water-saving and carbon-reducing system based on water cycle, information monitoring and control method

Abstract

The application relates to the technical field of water-saving application of urban water, in particular to a water-saving and carbon-reducing system based on water circulation, an information monitoring and control method, and the water-saving and carbon-reducing system based on water circulation. The water-saving and carbon-reducing system based on water circulation comprises a wastewater recovery system, the wastewater recovery system comprises a drainage channel and a grid plate, and a plurality of solid-liquid separators are arranged in the drainage channel; the solid-liquid separator comprises a flow distribution part and a flow guide part; two adjacent solid-liquid separators are arranged along the upstream and downstream directions and are connected with an upper liquid inlet and a lower liquid inlet through a connecting pipe to realize communication. The water system information monitoring and control method is applied to the water-saving and carbon-reducing system based on water circulation, and comprises a new wastewater inflow monitoring and filtering control method and the like. The application can effectively improve the recycling effect of wastewater, effectively prevent secondary pollution of municipal sewers to recycled water, and has good solid-liquid separation effect.

Description

Technical Field

[0001] This invention relates to the field of urban water conservation application technology, specifically to a water-saving and carbon-reducing system based on water cycle, and an information monitoring and control method. Background Technology

[0002] Water scarcity has become a global challenge, severely hindering sustainable socio-economic development. my country's per capita water resources are only one-quarter of the world average, making it one of the most water-scarce countries globally. The entire lifecycle of water resource development, transportation, treatment, and utilization consumes significant amounts of energy. Water conservation can reduce energy consumption and thus achieve carbon reduction; in other words, saving water is saving electricity, and saving electricity is reducing carbon emissions. Therefore, with the deepening implementation of the "dual carbon" goals (carbon conservation and energy conservation), water conservation, energy conservation, and carbon reduction have become important components of coordinated governance.

[0003] With the rapid urbanization in my country, the demand for water resources for the daily maintenance of urban public areas (such as pocket parks, sidewalks, and squares) (e.g., ground cleaning, green plant irrigation) is increasing year by year. Currently, in urban water systems, public area cleaning often uses tap water for direct rinsing, and the resulting wastewater is discharged directly into the municipal sewage network without being recycled, resulting in a significant waste of usable water resources. At the same time, natural rainwater in urban areas is also mostly discharged quickly through drainage systems, failing to be effectively converted into non-potable water resources such as green plant irrigation.

[0004] By leveraging market mechanisms and integrating water-saving technologies and funds to achieve shared water-saving benefits, contract-based water conservation management has been widely adopted across China in recent years. Contract-based water conservation management (hereinafter referred to as "contract water conservation") refers to a new market-oriented water conservation model where water-saving service companies sign water-saving service contracts with water-using units, using water savings or government subsidies as their main source of income. These contracts provide water-using units with integrated services including water conservation diagnosis, solution design, technological upgrades, equipment procurement, construction and installation, operation and maintenance, and data monitoring. However, current practices in contract-based water conservation management still face many technical bottlenecks. For example, wastewater generated in urban public areas mainly consists of suspended solids (fallen leaves, debris) and silt. Existing treatment methods involve: "screening fallen leaves → sedimentation tank for silt removal → filtration of suspended solids such as debris → activated carbon filtration → ultraviolet disinfection," after which the treated water is used for irrigation of park greenery. The traditional solutions mentioned above have too high operating costs, making them difficult to promote on a large scale. The reasons are as follows: 1. Wastewater is directly discharged into the municipal sewage network, which itself is a heavy source of pollution. Secondary pollution will significantly increase the cost of treating the wastewater in the later stages; 2. The cost of filtering debris and other suspended solids is high. The main reason is that conventional screens are prone to clogging, which is cumbersome and costly to clean. At the same time, the clogging of the screens cannot be monitored in a timely and effective manner, which directly affects the normal operation of the water system. Summary of the Invention

[0005] This invention provides a water-saving and carbon-reducing system based on water circulation, as well as an information monitoring and control method, to improve the recycling and treatment effect of wastewater in urban public areas. Through the recycling and utilization of water resources, water conservation and carbon reduction are achieved.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A water-saving and carbon-reducing system based on water circulation includes a wastewater recycling system. The wastewater recycling system includes a drainage ditch and a grating plate. Several solid-liquid separators are installed in the drainage ditch, and the grating plate covers the top of the drainage ditch. Each solid-liquid separator includes a diversion section and a guide section. The cross-sectional outline of the diversion section is trapezoidal, and a liquid storage chamber is provided inside. Several long liquid inlets are alternately arranged on its two side walls. The long liquid inlets are arranged laterally and communicate with the liquid storage chamber. A filter chamber is provided in the liquid storage chamber. The side wall of the filter chamber is provided with filter holes. An upper liquid inlet and a lower liquid inlet are respectively provided at the upper and lower ends of the filter chamber. The guide section is detachably installed on the top of the filter chamber. The upper part of the guide section is arched. Two adjacent solid-liquid separators are arranged in an upstream and downstream direction and are connected to the upper and lower liquid inlets by connecting pipes to achieve communication.

[0007] Optionally, a guide section is provided between two adjacent liquid inlets, and an outward protrusion is provided at the lower outer end of the guide section.

[0008] Optionally, the bottom of the diversion section may be adjustablely provided with several support rods.

[0009] Optionally, the side of the diversion section may be adjustablely provided with several push rods.

[0010] Optionally, it also includes a first separation tank, the inlet of which is connected to the lower inlet of the most downstream solid-liquid separator.

[0011] Optionally, a partition plate is provided in the first separation tank, and the front and rear sides of the partition plate are connected and fixed to the side wall of the first separation tank; the partition plate includes a vertical plate, a horizontal plate and an inclined plate from bottom to top, and the lower end of the vertical plate is reserved with a gap from the bottom of the first separation tank; the horizontal plate is located directly below the water inlet; the partition plate divides the first separation tank into a left tank and a right tank.

[0012] Optionally, the right pool is provided with a first level gauge and a control circuit, wherein the first level gauge is electrically connected to the control circuit.

[0013] Optionally, it also includes a pressure-controlled storage chamber, the upper part of which is connected to the right pool; a filter cotton is provided in the middle of the pressure-controlled storage chamber, and the sewage flowing in from the upper part is filtered by the filter cotton and flows into the lower part for storage; clamps are provided on both sides of the lower middle part of the filter cotton, and the clamps are driven by electric or pneumatic clamping action; the filter cotton adsorbs and filters the sewage in the upper part, and the mechanical squeezing of the clamps squeezes the water out of the lower middle part of the filter cotton, which falls into the lower part of the pressure-controlled storage chamber; below the top of the filter cotton is a positive pressure area, which is supplied by a positive pressure air source, and the pressure is controlled by the opening and closing of the air supply pipeline through an electric control air valve, so that the positive pressure flows from bottom to top through the filter cotton and is blown out from the top of the filter cotton.

[0014] Optionally, the top of the pressure-controlled liquid storage chamber is inclined upward toward the right pool side.

[0015] Optionally, the pressure-controlled liquid storage chamber is equipped with a second liquid level gauge and a barometer, and a drain pipe is also provided at its lower part. An electrically controlled drain valve is provided on the drain pipe; the electrically controlled drain valve, the second liquid level gauge, and the barometer are electrically connected to the control circuit.

[0016] Optionally, a filter cotton support plate is provided below the bottom end of the filter cotton, and the filter cotton support plate is provided with drainage mesh holes.

[0017] A water system information monitoring and control method, applied to a water-cycle-based water-saving and carbon-reducing system as described above, includes a method for monitoring and controlling the inflow of new waste liquid: S1: The liquid level of the right pool is monitored using the first liquid level gauge; S2: When the liquid level in the right pool rises to the set minimum trigger level, it serves as the system start-up trigger signal; S3: Start monitoring the air pressure in the positive pressure zone and open the electronically controlled air valve; S4: Activate the clamping plate to mechanically squeeze the filter cotton; S5: After the water is squeezed out of the lower middle part of the filter cotton, the positive pressure gas in the positive pressure area enters from the lower middle part of the filter cotton and exits from its top, performing airflow-type reverse unblocking on the filter cotton body. At the same time, the gas enters the top of the pressure-controlled liquid storage chamber, driving the suspended matter in the water area at the top upwards.

[0018] Optionally, a pressure regulation method for the positive pressure zone may also be included: (1) The liquid level in the pressure-controlled storage chamber is monitored by the second liquid level gauge, and the air pressure in the positive pressure zone is monitored by the barometer; (2) If the clamping plate adopts pneumatically driven clamping action, when the air pressure value of the positive air pressure area is higher than the set maximum air pressure value, the pressure is adjusted by opening the electrically controlled drain valve.

[0019] Optionally, methods for monitoring and determining filter clogging are also included: (1) Control the clamping plate to perform indirect pneumatic clamping at a set clamping speed, and exhaust the positive pressure area only by the clamping plate; (2) Control the liquid level in the pressure-controlled liquid storage chamber to the set minimum liquid level H1, at which time the time is T1; (3) The pressure of the positive pressure area is monitored by barometer and compared with the normal pressure range value P1-P2 of the time period T1+x. If the actual pressure value P3 is greater than P2, it is judged to be a risk of filter cotton blockage.

[0020] Optionally, methods for monitoring and determining filter clogging are also included: (1) The liquid level height monitored by the first liquid level gauge is not lower than the lowest trigger liquid level, and the liquid level height monitored by the second liquid level gauge is not higher than the set highest liquid level; (2) The clamping plate performs indirect clamping at a set clamping speed, and ensures that the air pressure value of the positive pressure area is within the normal range. (3) During the system operation period T, the liquid level rise height monitored by the second liquid level gauge is compared with the normal reference range value. If it is lower than the lowest normal reference range value, it is judged as a risk of filter cotton blockage.

[0021] The beneficial effects of this invention compared to the prior art are as follows: The present invention can effectively improve the recycling effect of wastewater, effectively prevent secondary pollution of the recycled water body by municipal sewers, and achieve good solid-liquid separation effect. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of the solid-liquid separator of the present invention; Figure 2 This is the present invention. Figure 1 A combined sectional view of the drainage ditch and grating. Figure 3 This is the present invention. Figure 2 A side sectional view; Figure 4 This is a schematic diagram of the structure of the first separation tank and the pressure-controlled storage chamber of the present invention; Figure 5 yes Figure 4 A magnified view of a portion of the filter cotton area; Figure 6 This is a cross-sectional view of the polyurethane foam and several pneumatic clamps in this embodiment; Figure 7 This is a schematic diagram of the air pressure control principle for the squeeze storage chamber. Detailed Implementation

[0023] The above description is a detailed explanation of this patent in conjunction with specific embodiments, and it should not be construed that the specific embodiments of this patent are limited to the above description. For those skilled in the art, any substitutions or modifications made to the described embodiments without departing from the concept of this patent should be considered within the scope of protection of this patent. In this specification, specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification and the features of different embodiments or examples. Although the embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions, and modifications can be made herein without departing from the scope of protection of the patent application.

[0024] A water-saving and carbon-reducing system based on water circulation includes a wastewater recycling system. The wastewater recycling system comprises a drainage ditch 18 and a grating 21 (preferably made of concrete). During construction, for a target area such as a pocket park, a drainage ditch 18 is first dug around its perimeter, with a designated lowest point. The bottom and sides of the drainage ditch 18 are hardened with poured concrete. Figure 2 As shown, a plurality of solid-liquid separators are provided in the drainage ditch 18, and the grating plate 21 covers the top of the drainage ditch; the middle part of the grating plate 21 is a concave arc surface, and a plurality of waist holes 22 are provided at its center position. In this embodiment, the waist holes 22 are preferably arranged in the left-right direction, and their left-right width is not greater than the left-right width of the solid-liquid separator; Figures 1-2 As shown, the solid-liquid separator includes a diversion section 6 and a guide section 1. The cross-sectional outline of the diversion section is trapezoidal, and a liquid storage chamber 5 is provided inside. Several long inlet ports 4 are alternately arranged on its two side walls. The long inlet ports 4 are arranged laterally and communicate with the liquid storage chamber 5. In this embodiment, the long inlet ports 4 are opened as strip-shaped long ports along the length direction (i.e., upstream and downstream direction) of the diversion section 6. A filter chamber 10 is provided inside the liquid storage chamber 5. The filter chamber 10 has two side walls 13 along its length direction, and several filter holes 12 are provided at the lower part of the side walls 13, such as... Figure 3 As shown, the upper and lower ends (i.e., the upstream and downstream ends) of the filter chamber 10 are respectively provided with an upper inlet 9 and a lower inlet 23; as Figure 1 and Figure 3 As shown, the top of the filter chamber 10 is detachably equipped with the flow guide 1. The upper part of the flow guide 1 is arched, and its length matches the length of the flow divider 6. Figure 3 As shown, the range of several waist holes 22 on the same grid plate 21 corresponds to the length range (i.e., upstream and downstream ends) of the guide section 1, to ensure that the water flowing downward from the waist holes 22 can fall onto the guide section 1 and flow along the guide section 1. Figure 2 The flow is diverted downwards in the left and right directions as shown. To match the total length of certain special drainage channels 18, several special-length solid-liquid separators can be installed during manufacturing to ensure that the entire solid-liquid separator, after connection, matches the total length of the drainage channel 18; for example... Figure 3 As shown, one of the grid plates 21 is directly opposite a flow guide 1. In this embodiment, as... Figures 1-2 As shown, the flow guide 1 and the top of the filter chamber 10 are detachably connected via a first plug-in connection 3 and a second plug-in connection 16. After being plugged in, the flow guide 1 and the diverter 6 form the liquid inlet 4. In this embodiment, three liquid inlets 4 are respectively provided on the left and right sides of the solid-liquid diverter. Meanwhile, as... Figure 1 As shown, a guide section 15 is located between two adjacent liquid inlets 4. An outer protrusion 14 (i.e., located at the upper end of the liquid inlet 4) is provided at the lower outer end of the guide section 15. An outer protrusion 2 is also provided at the lower outer end of the guide section 1. The function of the outer protrusion is: 1. To slow the flow, and the inner lower end of the protrusion is arc-shaped, which facilitates the diversion of water to the storage chamber 5; 2. To divert solid impurities such as small tree branches away from the storage chamber 5, reducing the amount of solid impurities mixed into the storage chamber 5. Figure 3 As shown, two adjacent solid-liquid diverters are arranged in an upstream-downstream orientation and connected to the upper and lower inlet ports via connecting pipes 24 (plastic water pipes) to achieve communication. Optionally, the bottom of the diversion section is adjustablely provided with several support rods 19. In this embodiment, the support rods 19 are connected to the threaded holes 11 on the bottom plate 8 of the diversion section 6 via a threaded structure. By adjusting the height of the support rods 19 on each diversion section 6 (glue can be injected into the threaded holes 11 during construction to solidify the adjusted support rods 19), it is ensured that the several solid-liquid diverters are inclined along the slope of the drainage channel 18 so that the water in each liquid storage chamber 5 can flow smoothly downstream.

[0025] Optional, such as Figures 1-2 As shown, the side of the diversion section 6 is adjustablely provided with several top rods 17. In this embodiment, the top rods 17 adopt a threaded structure and are adjustablely set on the lateral threaded holes 7 on the bottom plate 8 of the diversion section 6. During construction, the top rods 17 are adjusted to push against the side wall of the drainage ditch 18, so that the solid-liquid diverter is stably fixed in the drainage ditch 18. The grid plate 21 covering the top also serves to prevent pedestrians from stepping on the solid-liquid diverter, thus playing a protective role.

[0026] Optional, such as Figure 4 As shown, it also includes a first separation tank 31. The inlet of the first separation tank 31 is connected to the lower inlet 23 of the downstream solid-liquid separator. That is, in the scheme of this application, the solid-liquid separator is arranged along the drainage ditch 18. The solid-liquid separator separates the wastewater into solid and liquid components. Large solid waste such as large leaves and large branches are first intercepted by the grid plate 21. Then, the solid waste that is not intercepted by the grid plate 21 is further separated by the solid-liquid separator. Most of the solid waste and a small amount of water fall down the side wall of the solid-liquid separator onto the drainage ditch 18 and are discharged into the municipal sewer along the drainage ditch 18. Most of the water and a small amount of solid impurities and suspended solids are diverted to the storage chamber 5 and flow into the first separation tank 31.

[0027] Optionally, a partition plate is provided inside the first separation tank 31, and the front and rear sides of the partition plate are connected and fixed to the side walls of the first separation tank 31. The partition plate includes, from bottom to top, a vertical plate 27, a horizontal plate 28, an inclined plate 29, and a second vertical plate 30. A gap is reserved between the lower end of the vertical plate 27 and the bottom of the first separation tank 31. The horizontal plate 28 is located directly below the water inlet. The partition plate divides the first separation tank into a left tank and a right tank 31-1. The function of the above structure is as follows: Figure 4 As shown, the wastewater to be further purified flows into the first separation tank 31 from the inlet and impacts the horizontal plate 28. The bottom of the horizontal plate 28 is the lowest water level line. The vertical plate 27 further enhances the barrier to suspended solids in the wastewater, reducing the inflow of suspended solids and other impurities into the right tank 31-1, even if the water level in the first separation tank 31 drops to the lowest water level line. Figure 4 (At the dotted line), it can still effectively intercept suspended matter in the left pool.

[0028] Optionally, the right pool 31-1 is provided with a first level gauge 31-2 (electrically controlled) and also includes a control circuit, wherein the first level gauge 31-2 is electrically connected to the control circuit.

[0029] Optional, such as Figure 4 As shown, it also includes a pressure-controlled storage chamber 37, the upper part of which communicates with the right pool 31-1, and the bottom of its connecting port 40 is flush with the horizontal plate 28; a filter cotton 42 is provided in the middle of the pressure-controlled storage chamber 37, and the sewage flowing in from the upper part is filtered by the filter cotton 42 and flows into the lower part for storage; in this embodiment, the filter cotton 42 can be selected as polyurethane sponge or composite sponge (for example, the upper layer is PP cotton and the middle and lower layers are polyurethane sponge, etc.). Figure 5As shown, in this embodiment, a single piece of polyurethane sponge is preferred. A fixing slot 48 is provided in the upper middle part of the pressure-controlled liquid storage chamber 37. The upper part of the polyurethane sponge is wrapped with a stainless steel ring. The upper middle part 49 of the stainless steel ring is perforated with a hole diameter of about 1-5mm, while the lower part is not perforated. This allows it to be detachably fixed to the fixing slot 48, so that the lower middle part of the polyurethane sponge rests on the upper middle part of the pressure-controlled liquid storage chamber 37. To improve the stability of the polyurethane sponge, a filter cotton support plate 39 is also provided below its bottom end in this embodiment. The filter cotton support plate 39 is provided with drainage mesh holes 38. like Figures 5-6 As shown, clamping plates 41 are provided on both sides of the lower middle part of the filter cotton 42. The clamping plates 41 are driven by electric or pneumatic power for clamping. In this embodiment, a plurality of clearance grooves 42-1 are provided vertically along the lower middle part of a whole piece of polyurethane sponge. In some embodiments, support rods 47 can also be provided on the filter cotton support plate 39 to support the top of the clearance grooves 42-1. A set of clamping plates 41 is provided on the side of the polyurethane sponge, between the clearance grooves 42-1, and between adjacent clearance grooves 42-1. In this embodiment, pneumatic clamping plates 51 (such as MHZL2-25D parallel air grippers, made of aluminum alloy, lightweight and inexpensive) are preferred to meet the requirements of this embodiment. Figure 6The multi-unit independent clamping control scheme shown (in specific control, the clamping actions of several pneumatic clamps 51 can be controlled alternately in sequence, for example, 6 pneumatic clamps 51, one can be activated at a time, which can also improve the local penetration effect of positive air pressure on polyurethane sponge, and the next pneumatic clamp 51 can be activated after an interval of 3-5 seconds, and the clamping action can be controlled in this cyclical manner). The clamps 41 on the left and right sides are respectively connected to the left and right parallel air grippers. The pneumatic clamps 51 drive each part of the polyurethane sponge (lower middle part) to clamp and squeeze out water, that is, the wastewater in the upper part is adsorbed and filtered by the filter cotton, and the mechanical squeezing of the clamps 41 achieves the effect of... Water is squeezed out from the lower part of the filter cotton and falls into the lower part of the pressure-controlled liquid storage chamber. Below the top of the filter cotton is a positive pressure zone 46, which is supplied with positive pressure air. In this embodiment, a movable air compressor 36 is provided, and positive pressure air pipes 35 supply air to each pneumatic clamp 51. The air valves of the pneumatic clamps 51 are controlled by a control circuit, and their exhaust valves directly discharge positive pressure to the lower part of the pressure-controlled liquid storage chamber 37 (i.e., the positive pressure zone 46). In some embodiments, a pressure-replenishing air distribution pipe can also be provided, which is equipped with an electrically controlled air valve for pressure control and replenishment of the positive pressure zone 46. This electrically controlled air valve is also controlled by a control circuit. By supplementing the positive pressure zone with positive pressure in the above manner, positive pressure is achieved by flowing from bottom to top through the filter cotton 42 and being blown out from the top of the filter cotton. The purpose of this setup is to clamp the lower middle part of the filter cotton 42 with the clamping plate 41, squeeze out the moisture in the pores of the lower middle part of the filter cotton 42, which makes it easier for positive pressure air to enter and continuously flow out to the top, and can flush out the dirt in the pores of the filter cotton 42 at the top (that is, to clean the polyurethane sponge and reduce the probability of clogging later).

[0030] For example, using a conventional industrial polyurethane absorbent sponge, the lower part of the sponge being clamped, with a length of 15cm, a height of 10cm, and a thickness of 5cm, can produce 500-550ml of filtered water per compression by the clamping plate 41. With a pressure-controlled storage chamber 37 having a diameter of 20cm*30cm (filter port), three sets of clamping plates 41 can be installed, producing 1.5-1.6L of filtered water per compression cycle. During construction, it is preferable to install two or more pressure-controlled storage chambers 37. The system consists of multiple small-diameter, independently controlled pressure storage chambers, each equipped with a filter cotton 42. For example, there are 20 such controlled pressure storage chambers 37 (the tops of which are connected to the connecting port 40). The total filter diameter can reach 1.2 cubic meters. The use of small filter cotton 42 helps improve the long-term stability of the filter cotton and reduces maintenance costs. Based on a 1.2 cubic meter filter diameter, a single squeeze cycle can recover 30-32 liters of filtered water.

[0031] Optional, such as Figure 4 As shown, the top of the pressure-controlled liquid storage chamber is inclined upward towards the right pool. In this embodiment, a removable top cover 34 is used for sealing. The bottom surface of the top cover 34 is an inclined surface 33, and the outline of the top cover 34 is provided with a sealing gasket. It is tightened and sealed by several tightening screws 32. This design, together with the several air bubbles formed by the positive pressure gas, helps to push the suspended impurities at the top of the pressure-controlled liquid storage chamber 37 towards the right pool 31-1, so as to reduce the deposition of suspended matter on the top of the filter cotton 42 and cause blockage.

[0032] Optional, such as Figure 4 As shown, the pressure-controlled liquid storage chamber 37 is equipped with a second liquid level gauge 43 and an electronic barometer (used to monitor the air pressure in the positive pressure area 46 to ensure it is within the normal air pressure range after the trigger system is started). A drain pipe 44 is also provided at its lower part, and an electrically controlled drain valve 45 is provided on the drain pipe 44. The electrically controlled valve, the second liquid level gauge (electrically controlled), and the electronic barometer are electrically connected to the control circuit.

[0033] A water system information monitoring and control method, applied to a water-cycle-based water-saving and carbon-reducing system as described above, includes a method for monitoring and controlling the inflow of new waste liquid: S1: The liquid level of the right pool 31-1 is monitored using the first liquid level gauge; S2: Wait until the liquid level in the right pool 31-1 rises to the set minimum trigger level (which can be set by the user, for example, it can be as follows). Figure 4 When the distance is 1-3cm above the dashed line shown in the diagram, it serves as the system startup trigger signal; S3: Start monitoring the air pressure in the positive pressure zone and open the electronically controlled air valve; S4: Activate the clamping plate to mechanically squeeze the filter cotton; S5: After the water is squeezed out of the lower middle part of the filter cotton, the positive pressure gas in the positive pressure area enters from the lower middle part of the filter cotton and exits from its top, performing airflow-type reverse unblocking on the filter cotton body. At the same time, the gas enters the top of the pressure-controlled liquid storage chamber, driving the suspended matter in the water area at the top upwards.

[0034] Optionally, a pressure regulation method for the positive pressure zone may also be included: (1) The liquid level in the pressure-controlled storage chamber is monitored by the second liquid level gauge, and the air pressure in the positive pressure zone is monitored by the barometer; (2) If the clamping plate adopts pneumatically driven clamping action, when the air pressure value of the positive air pressure area is higher than the set maximum air pressure value, the pressure is adjusted by opening the electrically controlled drain valve.

[0035] Optionally, methods for monitoring and determining filter clogging are also included: (1) Control the clamping plate to perform indirect pneumatic clamping at a set clamping speed, and exhaust the positive pressure area only by the clamping plate; (2) Control the liquid level in the pressure-controlled liquid storage chamber to the set minimum liquid level H1, at which time the time is T1; (3) The pressure of the positive pressure area is monitored by barometer and compared with the normal pressure range value P1-P2 of the time period T1+x. If the actual pressure value P3 is greater than P2, it is judged to be a risk of filter cotton blockage.

[0036] Optionally, methods for monitoring and determining filter clogging are also included: (1) The liquid level height monitored by the first liquid level gauge is not lower than the lowest trigger liquid level, and the liquid level height monitored by the second liquid level gauge is not higher than the set highest liquid level; (2) The clamping plate performs indirect clamping at a set clamping speed, and ensures that the air pressure value of the positive pressure area is within the normal range. (3) During the system operation period T, the liquid level rise height monitored by the second liquid level gauge is compared with the normal reference range value. If it is lower than the lowest normal reference range value, it is judged as a risk of filter cotton blockage.

Claims

1. A water-saving and carbon-reducing system based on water circulation, characterized in that: The system includes a wastewater recycling system comprising a drainage ditch and a grating. Several solid-liquid separators are installed within the drainage ditch, and the grating covers the top of the drainage ditch. Each solid-liquid separator includes a diversion section and a guide section. The outer contour of the diversion section is trapezoidal, and a liquid storage chamber is located inside. Several elongated liquid inlets are alternately arranged on its two side walls, and these inlets are horizontally positioned and communicate with the liquid storage chamber. A filtration chamber is installed within the liquid storage chamber, and filter holes are provided on the side walls of the filtration chamber. An upper inlet and a lower inlet are respectively provided at the upper and lower ends of the filtration chamber. The guide section is detachably installed on the top of the filtration chamber, and its upper part is arched. Two adjacent solid-liquid separators are arranged in an upstream-downstream orientation and connected to the upper and lower inlets via connecting pipes. It also includes a first separation tank, the inlet of which is connected to the lower inlet of the most downstream solid-liquid separator; A partition plate is provided inside the first separation tank, and the front and rear sides of the partition plate are connected and fixed to the side wall of the first separation tank; the partition plate divides the first separation tank into a left tank and a right tank; It also includes a pressure-controlled storage chamber, the upper part of which is connected to the right pool; a filter cotton is provided in the middle of the pressure-controlled storage chamber, and the sewage flowing in from the upper part is filtered by the filter cotton and flows into the lower part for storage; clamps are provided on both sides of the lower middle part of the filter cotton, and the clamps are driven by electric or pneumatic clamping action; the filter cotton adsorbs and filters the sewage in the upper part, and the mechanical squeezing of the clamps squeezes the water out of the lower middle part of the filter cotton and it falls into the lower part of the pressure-controlled storage chamber; below the top of the filter cotton is a positive pressure area, which is supplied by a positive pressure air source, and the pressure is controlled by the opening and closing of the air supply pipeline through an electric control air valve, so that the positive pressure flows from bottom to top through the filter cotton and is blown out from the top of the filter cotton.

2. The water-saving and carbon-reducing system based on water circulation according to claim 1, characterized in that: The space between two adjacent liquid inlets is a guide section, and the lower outer end of the guide section is provided with an outward protrusion.

3. The water-saving and carbon-reducing system based on water circulation according to claim 1, characterized in that: The bottom of the diversion section is adjustablely equipped with several support rods.

4. A water-saving and carbon-reducing system based on water circulation according to claim 1, characterized in that: The side of the diversion section is adjustablely equipped with several push rods.

5. A water-saving and carbon-reducing system based on water circulation according to claim 1, characterized in that: The partition plate includes, from bottom to top, a vertical plate, a horizontal plate, and an inclined plate. The lower end of the vertical plate has a gap with the bottom of the first separation tank. The horizontal plate is located directly below the water inlet.

6. A water-saving and carbon-reducing system based on water circulation according to claim 5, characterized in that: The right pool is equipped with a first level gauge and a control circuit, wherein the first level gauge is electrically connected to the control circuit.

7. A water-saving and carbon-reducing system based on water circulation according to claim 6, characterized in that: The top of the pressure-controlled liquid storage chamber is inclined upwards towards the right pool side.

8. A water-saving and carbon-reducing system based on water circulation according to claim 6, characterized in that: The pressure-controlled liquid storage chamber is equipped with a second liquid level gauge and a barometer, and a drain pipe is also provided at its lower part. An electrically controlled drain valve is provided on the drain pipe; the electrically controlled drain valve, the second liquid level gauge, and the barometer are electrically connected to the control circuit.

9. A water-saving and carbon-reducing system based on water circulation according to claim 6, characterized in that: A filter cotton support plate is provided below the bottom of the filter cotton, and the filter cotton support plate is provided with drainage mesh holes.

10. A method for monitoring and controlling water system information, characterized in that: Applied to a water-cycle-based water-saving and carbon-reducing system as described in any one of claims 6 to 9, including a method for monitoring and controlling the inflow of new waste liquid: S1: The liquid level of the right pool is monitored using the first liquid level gauge; S2: When the liquid level in the right pool rises to the set minimum trigger level, it serves as the system start-up trigger signal; S3: Start monitoring the air pressure in the positive pressure zone and open the electronically controlled air valve; S4: Activate the clamping plate to mechanically squeeze the filter cotton; S5: After the water is squeezed out of the lower middle part of the filter cotton, the positive pressure gas in the positive pressure area enters from the lower middle part of the filter cotton and exits from its top, performing airflow-type reverse unblocking on the filter cotton body. At the same time, the gas enters the top of the pressure-controlled liquid storage chamber, driving the suspended matter in the water area at the top upwards.

11. The water system information monitoring and control method according to claim 10, characterized in that, It also includes a pressure regulation method for the positive pressure zone: (1) The liquid level in the pressure-controlled storage chamber is monitored by the second liquid level gauge, and the air pressure in the positive pressure zone is monitored by the barometer; (2) If the clamping plate adopts pneumatically driven clamping action, when the air pressure value of the positive air pressure area is higher than the set maximum air pressure value, the pressure is adjusted by opening the electrically controlled drain valve.

12. The water system information monitoring and control method according to claim 11, characterized in that, It also includes methods for monitoring and determining filter clogging: (1) Control the clamping plate to perform indirect pneumatic clamping at a set clamping speed, and exhaust the positive pressure area only by the clamping plate; (2) Control the liquid level in the pressure-controlled liquid storage chamber to the set minimum liquid level H1, at which time the time is T1; (3) The positive pressure area is monitored by barometer and compared with the normal pressure range value P1-P2 of the time period T1+x. If the actual pressure value P3 is greater than P2, it is judged to be a risk of filter cotton blockage.

13. The water system information monitoring and control method according to claim 10, characterized in that, It also includes methods for monitoring and determining filter clogging: (1) The liquid level height monitored by the first liquid level gauge is not lower than the lowest trigger liquid level, and the liquid level height monitored by the second liquid level gauge is not higher than the set highest liquid level; (2) The clamping plate performs indirect clamping at a set clamping speed, and ensures that the air pressure value of the positive pressure area is within the normal range. (3) During the system operation period T, the liquid level rise height monitored by the second liquid level gauge is compared with the normal reference range value. If it is lower than the lowest normal reference range value, it is judged as a risk of filter cotton blockage.

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