Filtering and precipitating device and method for modern ecological environment governance of water resources

Abstract

The invention relates to the technical field related to water resource treatment, and discloses a filtering and precipitating device and method for modern ecological environment governance of water resources, the filtering and precipitating device comprises a supporting seat, the top of the supporting seat is fixedly provided with a working box, and the working box is internally provided with a coarse screen; a stirring assembly is fixedly installed at the end, away from the feeding port, of the connecting pipe, activated carbon is arranged in the working box, quartz sand is arranged on the outer side of the activated carbon, an ultrafiltration membrane is arranged on the outer side of the quartz sand, a disinfection pipe is fixedly installed on the outer side of the ultrafiltration membrane, and a sedimentation tank is fixedly installed at the bottom in the working box. Purifying cotton is arranged at the top of the settling pond, and a collecting assembly is arranged at the bottom of the supporting seat. By adopting a graded filtering and multi-layer filtering structure, the removal rate of various impurities in complex water is greatly improved, the removal rate of part of organic pollutants is improved, the clarity and purity of effluent are effectively guaranteed, and the effluent is accurately collected.

Description

Technical Field

[0001] The present invention relates to the technical field related to water resource treatment, and in particular to a filtering and sedimentation device and method for modern ecological environment management of water resources. Background Art

[0002] In today's society, water pollution is becoming increasingly severe. Problems such as industrial wastewater discharge, wanton flow of domestic sewage and agricultural non-point source pollution are constantly eroding limited water resources. With the rapid development of modern industry, the acceleration of urbanization and the continuous growth of population, water resources are facing unprecedented severe challenges. A large amount of wastewater generated in the industrial production process, including heavy metal ions, organic pollutants, acid-base substances, etc., is directly discharged without effective treatment, causing extremely serious pollution to water bodies. In the agricultural field, the excessive use of pesticides and fertilizers has caused a large amount of nutrients such as nitrogen and phosphorus to flow into water bodies, triggering eutrophication of water bodies, causing abnormal reproduction of aquatic organisms such as algae, destroying the ecological balance of water bodies, causing hypoxic zones in waters, and a large number of aquatic organisms die. The water quality deteriorates. If sewage is discharged into natural water bodies without proper treatment, it will not only harm the aquatic ecosystem, but also threaten human health through drinking water sources and other channels. Therefore, a filtering and sedimentation device and method for modern ecological environment management of water resources are particularly needed.

[0003] However, the prior art has the following problems:

[0004] The sedimentation and filtration devices of the prior art often have a simple structure, low sedimentation efficiency, and limited removal effect on tiny suspended particles and colloidal substances. Some early filtration equipment only uses a single layer of filter material, such as a single quartz sand filter layer, which is difficult to effectively remove pollutants of different particle sizes and various properties in the water. In addition, the traditional device lacks an intelligent monitoring and control mechanism during the treatment process, and cannot flexibly adjust the treatment parameters according to the real-time changes in water quality, resulting in unstable treatment effects. The effluent water quality is difficult to meet the increasingly stringent ecological and environmental water use standards. In addition, the traditional method is not accurate enough in terms of reagent addition, which can easily cause reagent waste or incomplete treatment. At the same time, the stirring device is not designed, which will lead to the concentration of flocculants in local areas. If the concentration of flocculants in the water is too high and there is insufficient flocculant in other areas, the uneven mixing will reduce the overall flocculation effect, resulting in the inability of suspended matter and colloids in the water to coagulate and precipitate well, affecting the subsequent filtration and sedimentation efficiency, which is not conducive to the aggregation of sediments. They may be suspended in the water for a long time and difficult to settle to the bottom, eventually resulting in the suspended matter content of the effluent exceeding the standard and failing to achieve the expected water purification effect. In addition, no collection device is designed. When the filtration and sedimentation device needs to be cleaned, solid impurities and wastewater are difficult to centrally treat, and the cleaning work will become very complicated and time-consuming. They may accumulate around the device or enter other water bodies, soil and other environmental media with rainwater erosion. Solid waste may contain a large amount of harmful substances, which will cause soil pollution. Summary of the invention

[0005] The purpose of the present invention is to provide a filtering and sedimentation device and method for modern ecological environment management of water resources in order to solve the above-mentioned problems, in order to overcome the defects of the prior art, as described in detail below.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The present invention provides a filtering and sedimentation device for modern ecological environment management of water resources, comprising: a support seat, a working box is fixedly installed on the top of the support seat, a feed port is opened on the outside of the working box, a connecting pipe is connected to the inside of the feed port, a coarse grid is arranged inside the working box, a stirring assembly is fixedly installed on the end of the connecting pipe away from the feed port, activated carbon is arranged inside the working box, quartz sand is arranged on the outside of the activated carbon, an ultrafiltration membrane is arranged on the outside of the quartz sand, a disinfection tube is fixedly installed on the outside of the ultrafiltration membrane, a sedimentation tank is fixedly installed on the bottom of the working box, purification cotton is arranged on the top of the sedimentation tank, a discharge port is opened on the outside of the working box, and a collecting assembly is arranged at the bottom of the support seat.

[0008] Preferably, the activated carbon, quartz sand and ultrafiltration membrane are of the same size, and are tightly fitted to each other.

[0009] Preferably, the interior of the working box is divided into three layers by a partition, the sedimentation tank is located below the purification cotton, and the feed port and the discharge port are symmetrically distributed about the vertical center line of the working box.

[0010] Preferably, the stirring assembly includes a stirring shell, a connecting port, an introduction pipe, a motor, a mounting bracket, a stirring blade, a filter and an outlet. The stirring shell is fixedly installed on the end of the connecting pipe away from the feed port, a connecting port is provided on the outside of the stirring shell, an introduction pipe is provided on the outside of the stirring shell, a motor is fixedly installed on the outside of the stirring shell, a mounting bracket is fixedly installed on the output end of the motor, a stirring blade is fixedly installed on the outside of the mounting bracket, a filter is arranged inside the stirring shell, an outlet is provided on the outside of the stirring shell, the connecting port is matched with the connecting pipe, and the size of the filter is consistent with the diameter inside the stirring shell.

[0011] Preferably, the horizontal center lines of the motor, the mounting bracket and the stirring blade are located on the same horizontal center line, and the mounting bracket and the stirring blade do not contact the inner wall of the stirring shell.

[0012] Preferably, three identical stirring blades are provided, and the three stirring blades are distributed in a ring shape with respect to the outer side of the mounting bracket.

[0013] Preferably, the collecting assembly includes a collecting trolley, universal wheels, a power switch, a control panel, a collecting trough, a collecting funnel, filter sand and a through hole. A collecting trolley is arranged at the bottom of the supporting seat, a universal wheel is arranged at the bottom of the collecting trolley, a power switch is fixedly installed on the outside of the collecting trolley, a control panel is fixedly installed on the outside of the collecting trolley, a collecting funnel is arranged on the top of the collecting trolley, filter sand is arranged on the top of the collecting funnel, a through hole is opened at the bottom of the collecting funnel, the collecting funnel is located inside the working box, and the aperture of the collecting trough is matched with the aperture of the through hole.

[0014] A filtering and sedimentation device method for modern ecological environment management of water resources comprises the following steps:

[0015] Step 1, pretreatment stage: a coarse screen is set at the entrance of the water source into the treatment system, and the gap of the screen is 10-30 mm, which is used to intercept large floating objects such as branches, plastic bottles, large aquatic plant residues, etc., to prevent them from entering the subsequent treatment equipment and causing blockage. The water passing through the coarse screen flows into the pre-sedimentation tank, and the residence time is 1-3 hours, so that some of the heavy sediment and large suspended matter in the water naturally settle to the bottom under the action of gravity. The bottom of the pre-sedimentation tank is designed to be conical or bucket-shaped to facilitate the collection and discharge of sediments. The precipitated sludge can be regularly transported to the sludge treatment area through a sludge pump;

[0016] Step 2, flocculation and sedimentation stage: introduce the pre-precipitated water into the flocculation reaction tank, add flocculants into the water, and the flocculants can be polyaluminium chloride (PAC) or polyferric sulfate (PFS), etc., and the dosage is 20-50 mg / L according to the water quality. At the same time, turn on the stirring device, first stir quickly (100-150 rpm) to fully mix the flocculant and water, and the stirring time is 1-3 minutes, and then switch to slow stirring (30-50 rpm), which lasts for 10-20 minutes to promote the formation and growth of floccules. The water after flocculation reaction flows into the flocculation sedimentation tank, which adopts the structure of inclined tube or inclined plate sedimentation tank, and the rising flow rate of water flow is controlled at 0.5-1.5 mm / s. The floccules are precipitated in the inclined tube or inclined plate, and the precipitation time is 2-4 hours. The precipitated sludge is collected into the sludge hopper through the scraper device, and then transported out through the sludge pump for subsequent treatment, such as sludge dehydration.

[0017] Step 3, filtration and collection stage: the water after flocculation and precipitation enters the quartz sand filter, and the filter is filled with quartz sand of different particle sizes, which gradually increase from top to bottom, such as 0.5-1 mm for the upper layer, 1-2 mm for the middle layer, and 2-4 mm for the lower layer. Water passes through the quartz sand layer at a flow rate of 5-10 cubic meters per hour. The quartz sand can further intercept the fine suspended matter, colloids and other impurities remaining in the water. The filtration cycle can be determined according to the water quality of the inlet and outlet water and the filtration pressure difference, which is generally 12-24 hours. When the filtration When the pressure difference reaches 0.05-0.1 MPa, backwashing is carried out. The water after quartz sand filtration enters the activated carbon filter. Activated carbon can be coconut shell activated carbon or coal activated carbon. It has a developed pore structure and can absorb organic pollutants, odor, residual chlorine, etc. in the water. The flow rate of water in the activated carbon filter is controlled at 3-6 cubic meters / hour. The replacement cycle of activated carbon is determined according to the water quality and the adsorption saturation of activated carbon, generally 3-6 months, and the filtered residue is collected;

[0018] Step 4, deep treatment and disinfection stage: For situations with higher requirements on water quality, ultrafiltration or reverse osmosis membrane treatment can be used. The pore size of ultrafiltration membrane is generally 0.01-0.1 micron, which can remove large molecular organic matter, colloids, bacteria, etc. in the water, and the operating pressure is 0.1-0.5 MPa. The reverse osmosis membrane can further remove small molecular substances such as soluble salts, and the operating pressure is 0.5-1.5 MPa. Finally, the treated water is disinfected. Ultraviolet disinfection, chlorine dioxide disinfection or sodium hypochlorite disinfection can be used. Ultraviolet disinfection uses ultraviolet radiation to destroy the DNA structure of microorganisms. The irradiation dose is 20-40 mJ / cm2. When chlorine dioxide or sodium hypochlorite disinfection, the dosage is controlled at 0.5-2 mg / L according to the residual chlorine requirements to kill pathogenic microorganisms remaining in the water and ensure that the effluent quality meets the relevant ecological environmental water use or reuse standards.

[0019] The beneficial effects are:

[0020] 1. The filtering and sedimentation device and method for modern ecological environment management of water resources adopts the design concept of graded filtration and a combination of filter materials of different particle sizes and materials, such as fine quartz sand in the upper layer, activated carbon in the middle layer, and special ceramic filter materials in the lower layer. It can effectively intercept a variety of pollutants ranging from large suspended particles to tiny colloidal particles, organic molecules, etc. The multi-level filtration structure greatly improves the removal rate of various impurities in complex water quality. Compared with traditional single-media filters, the removal rate of suspended matter is improved, and the removal rate of some organic pollutants is improved, which effectively ensures the clarity and purity of the effluent water.

[0021] 2. The filtering and sedimentation device and method for modern ecological environment management of water resources can quickly and evenly disperse the agent in the water by setting a stirring component. Stirring can ensure that it is fully in contact with the sewage in a short time, avoiding excessively high or low local concentrations, allowing the agent to fully react with pollutants such as suspended particles and colloids to form larger flocs, thereby improving the flocculation and sedimentation effect. Generally, the flocculation reaction time can be shortened, and the floc formation speed and quality can be improved. Appropriate stirring can prevent the sediment from excessively accumulating and hardening at the bottom. For some water bodies containing high concentrations of silt or easily precipitated substances, stirring can keep the sediment at a certain fluidity, which is convenient for subsequent sludge discharge. Stirring makes the precipitated sludge less likely to harden, reducing the difficulty and frequency of manual cleaning, and promoting the chemical reaction between pollutants in the water and the treatment agent to proceed more rapidly. Stirring can make the reactants fully contact, improve the reaction rate constant, and make the reaction reach equilibrium faster, thereby achieving a higher degree of pollutant removal in the same time.

[0022] 3. The filtering and sedimentation device and method for modern ecological environment management of water resources, by setting up a collection device and adopting a specially designed inlet structure, accurately guides it into the collection area. For tiny particle pollutants, through the optimized airflow or water flow channel, it is made to efficiently contact with the collection medium and be adsorbed or retained under the synergistic effect of inertia and gravity. The collection efficiency is improved compared with the traditional collection device, ensuring that the target substances are fully collected within a larger spatial range, whether it is suspended impurities in the water body or dust particles in the atmosphere, etc., can be minimized, effectively expanding the collection range, increasing the total amount of resource recovery or pollutant removal, ensuring that the collection process is not significantly affected by external interference factors, and operating continuously and stably, reducing the risk of decreased collection efficiency and equipment failure due to environmental fluctuations, facilitating timely maintenance and replacement, greatly extending the overall service life of the collection device, reducing long-term operating costs, and ensuring its reliable operation over a long period of time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0025] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0026] Figure 3The present invention is a three-dimensional cross-sectional view of the structure schematic diagram Figure 1 ;

[0027] Figure 4 The present invention is a three-dimensional cross-sectional view of the structure schematic diagram Figure 2 ;

[0028] Figure 5 This is a schematic diagram of the split structure of the stirring assembly of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the collection component of the present invention;

[0030] Figure 7 It is a schematic diagram of the cross-sectional structure of the filtering and sedimentation shell of the present invention.

[0031] The accompanying drawings are marked as follows: 1. Support seat; 2. Working box; 3. Feed port; 4. Connecting pipe; 5. Coarse grid; 6. Stirring assembly; 601. Stirring shell; 602. Connecting port; 603. Inserting pipe; 604. Motor; 605. Mounting bracket; 606. Stirring blade; 607. Filter net; 608. Outlet; 7. Activated carbon; 8. Quartz sand; 9. Ultrafiltration membrane; 10. Disinfection tube; 11. Sedimentation tank; 12. Purification cotton; 13. Outlet; 14. Collection assembly; 1401. Collection vehicle; 1402. Universal wheel; 1403. Power switch; 1404. Control panel; 1405. Collection tank; 1406. Collection funnel; 1407. Filter sand; 1408. Through hole. DETAILED DESCRIPTION

[0032] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0033] Example 1

[0034] See also Figure 1 - Figure 7A filtering and sedimentation device for modern ecological environment management of water resources comprises: a support base 1, a working box 2 is fixedly installed on the top of the support base 1, a feed port 3 is opened on the outside of the working box 2, a connecting pipe 4 is connected to the inside of the feed port 3, a coarse grid 5 is arranged inside the working box 2, a stirring assembly 6 is fixedly installed on the end of the connecting pipe 4 away from the feed port 3, activated carbon 7 is arranged inside the working box 2, quartz sand 8 is arranged on the outside of the activated carbon 7, an ultrafiltration membrane 9 is arranged on the outside of the quartz sand 8, a disinfection tube 10 is fixedly installed on the outside of the ultrafiltration membrane 9, a sedimentation tank 11 is fixedly installed on the bottom of the working box 2, a purification cotton 12 is arranged on the top of the sedimentation tank 11, a discharge port 13 is opened on the outside of the working box 2, and a collecting assembly 14 is arranged at the bottom of the support base 1.

[0035] For further information, see Figure 1 - Figure 7 , the activated carbon 7, quartz sand 8 and ultrafiltration membrane 9 are of the same size, and are tightly fitted to each other. By arranging the activated carbon 7, quartz sand 8 and ultrafiltration membrane 9, and by combining filter materials of different particle sizes and materials, such as the fine quartz sand 8 in the upper layer, the activated carbon 7 in the middle layer and the special ceramic filter material in the lower layer, a variety of pollutants ranging from large suspended matter to tiny colloidal particles and organic molecules can be effectively intercepted. The multi-level filtration structure greatly improves the removal rate of various impurities in complex water quality. Compared with the traditional single filter material filter, the removal rate of suspended matter is improved, and the removal rate of some organic pollutants is improved, which effectively ensures the clarity and purity of the effluent water.

[0036] For further information, see Figure 1 - Figure 7 The interior of the working box 2 is divided into three layers by a partition. The sedimentation tank 11 is located below the purification cotton 12. The feed port 3 and the discharge port 13 are symmetrically distributed about the vertical center line of the working box 2. The feed port 3 and the discharge port 13 make entry and exit more convenient and stable, thereby improving the overall stability.

[0037] For further information, see Figure 1 - Figure 7The stirring assembly 6 includes a stirring shell 601, a connecting port 602, an introduction pipe 603, a motor 604, a mounting bracket 605, a stirring sheet 606, a filter 607 and a pipe outlet 608. The stirring shell 601 is fixedly installed at one end of the connecting pipe 4 away from the feeding port 3. The outer side of the stirring shell 601 is provided with a connecting port 602, the outer side of the stirring shell 601 is provided with an introduction pipe 603, the outer side of the stirring shell 601 is fixedly installed with a motor 604, the output end of the motor 604 is fixedly installed with a mounting bracket 605, the outer side of the mounting bracket 605 is fixedly installed with a stirring sheet 606, the interior of the stirring shell 601 is provided with a filter 607, the outer side of the stirring shell 601 is provided with a pipe outlet 608, the connecting port 602 is adapted to the connecting pipe 4, the size of the filter 607 is consistent with the diameter of the inside of the stirring shell 601, and by setting The stirring component 6 can make the agent disperse quickly and evenly in the water. Stirring can ensure that it is fully in contact with the sewage in a short time, avoiding local concentration being too high or too low, so that the agent can fully react with pollutants such as suspended particles and colloids to form larger flocs, improve the flocculation and sedimentation effect, and generally shorten the flocculation reaction time, improve the floc formation speed and quality, and proper stirring can prevent the sediment from excessively accumulating and hardening at the bottom. For some water bodies containing high concentrations of silt or easily precipitated substances, stirring can keep the sediment at a certain fluidity, which is convenient for subsequent sludge discharge. Stirring makes the precipitated sludge not easy to harden, reducing the difficulty and frequency of manual cleaning, and promoting the chemical reaction between pollutants in the water and the treatment agent to proceed more rapidly. Stirring can make the reactants fully contact, improve the reaction rate constant, and make the reaction reach equilibrium faster, thereby achieving a higher degree of pollutant removal in the same time.

[0038] For further information, see Figure 1 - Figure 7 The horizontal center lines of the motor 604, the mounting bracket 605 and the stirring blade 606 are located on the same horizontal center line, and the mounting bracket 605 and the stirring blade 606 do not contact the inner wall of the stirring shell 601. By setting the horizontal center lines of the motor 604, the mounting bracket 605 and the stirring blade 606 to be on the same horizontal center line, the stability of the stirring assembly 6 is improved.

[0039] For further information, see Figure 1 - Figure 7 , three identical stirring blades 606 are provided, and the three stirring blades 606 are distributed in a ring shape with respect to the outer side of the mounting bracket 605. By providing the three stirring blades 606, the agent can be quickly and evenly dispersed in the water, and stirring can ensure that it is fully in contact with the sewage in a short time, avoiding excessively high or low local concentrations, so that the agent can fully react with pollutants such as suspended particles and colloids to form larger flocs, thereby improving the flocculation and sedimentation effect, generally shortening the flocculation reaction time, and improving the floc formation speed and quality.

[0040] Finally, see Figure 1 - Figure 7 The collecting assembly 14 includes a collecting vehicle 1401, a universal wheel 1402, a power switch 1403, a control panel 1404, a collecting tank 1405, a collecting funnel 1406, filter sand 1407 and a through hole 1408. The collecting vehicle 1401 is arranged at the bottom of the supporting seat 1, the universal wheel 1402 is arranged at the bottom of the collecting vehicle 1401, the power switch 1403 is fixedly installed on the outside of the collecting vehicle 1401, the control panel 1404 is fixedly installed on the outside of the collecting vehicle 1401, the collecting funnel 1406 is arranged on the top of the collecting vehicle 1401, the filter sand 1407 is arranged on the top of the collecting funnel 1406, the through hole 1408 is opened at the bottom of the collecting funnel 1406, and the collecting funnel 1406 is located inside the working box 2. The aperture of the collection slot 1405 is matched with the aperture of the through hole 1408. By setting up the collection component 14 and adopting a specially designed inlet structure, it is accurately guided into the collection area. For tiny particle pollutants, through the optimized airflow or water flow channel, it is efficiently contacted with the collection medium and adsorbed or retained under the synergistic effect of inertia and gravity. The collection efficiency is improved compared with the traditional collection device, ensuring that the target substance is fully collected within a larger spatial range. Whether it is suspended impurities in the water body or dust particles in the atmosphere, it can minimize omissions, effectively expand the collection range, increase the total amount of resource recovery or pollutant removal, and ensure that the collection process is not significantly affected by external interference factors.

[0041] Example 2

[0042] A filtering and sedimentation device method for modern ecological environment management of water resources, using a filtering and sedimentation device for modern ecological environment management of water resources in Example 1, further comprising the following steps:

[0043] Step 1: Preprocessing stage:

[0044] A coarse screen is set at the entrance of the water source into the treatment system, and the gap of the screen is 10-30 mm, which is used to intercept large floating objects such as branches, plastic bottles, large aquatic plant residues, etc., to prevent them from entering the subsequent treatment equipment and causing blockage. The water passing through the coarse screen flows into the pre-sedimentation tank 11, and the retention time is 1-3 hours, so that some of the sediment and large suspended matter with a larger specific gravity in the water naturally settle to the bottom under the action of gravity. The bottom of the pre-sedimentation tank 11 is designed to be conical or bucket-shaped to facilitate the collection and discharge of sediments. The precipitated sludge can be regularly transported to the sludge treatment area through a sludge pump;

[0045] Step 2: Flocculation and sedimentation stage:

[0046] The water after pre-precipitation is introduced into a flocculation reaction tank, and a flocculant is added to the water. The flocculant can be polyaluminium chloride (PAC) or polyferric sulfate (PFS), etc., and the dosage is 20-50 mg / L according to the water quality. At the same time, the stirring device is turned on, and the flocculant and water are fully mixed by rapid stirring (100-150 rpm) for 1-3 minutes, and then the stirring is switched to slow stirring (30-50 rpm) for 10-20 minutes to promote the formation and growth of flocs. The water after flocculation reaction flows into a flocculation sedimentation tank 11. The flocculation sedimentation tank 11 adopts an inclined tube or inclined plate sedimentation tank 11 structure, and the rising flow rate of the water flow is controlled at 0.5-1.5 mm / s. The flocs are precipitated in the inclined tube or inclined plate for 2-4 hours. The precipitated sludge is collected into a sludge hopper by a sludge scraper, and then transported out by a sludge pump for subsequent treatment, such as sludge dehydration.

[0047] Step 3: Filtering and collection phase:

[0048] The water after flocculation and sedimentation enters the quartz sand 8 filter. The filter is filled with quartz sand 8 of different particle sizes, which gradually increase from top to bottom. For example, the upper layer is 0.5-1 mm, the middle layer is 1-2 mm, and the lower layer is 2-4 mm. The water passes through the quartz sand 8 layer at a flow rate of 5-10 cubic meters per hour. The quartz sand 8 can further intercept the fine suspended matter, colloids and other impurities remaining in the water. The filtration cycle can be determined according to the water quality of the inlet and outlet water and the filtration pressure difference, which is generally 12-24 hours. When the filtration pressure difference reaches 0. Backwashing is carried out at 0.5-0.1 MPa. The water filtered by quartz sand 8 enters the activated carbon 7 filter. Activated carbon 7 can be coconut shell activated carbon 7 or coal activated carbon 7. It has a developed pore structure and can absorb organic pollutants, odor, residual chlorine, etc. in the water. The flow rate of water in the activated carbon 7 filter is controlled at 3-6 cubic meters / hour. The replacement cycle of activated carbon 7 is determined according to the water quality and the adsorption saturation of activated carbon 7, generally 3-6 months, and the filtered residue is collected;

[0049] Step 4: Deep processing and disinfection stage:

[0050] For situations with higher requirements on water quality, ultrafiltration or reverse osmosis membrane treatment can be used. The pore size of ultrafiltration membrane 9 is generally 0.01-0.1 micron, which can remove large molecular organic matter, colloids, bacteria, etc. in the water. The operating pressure is 0.1-0.5 MPa. The reverse osmosis membrane can further remove small molecular substances such as soluble salts. The operating pressure is 0.5-1.5 MPa. Finally, the treated water is disinfected. Ultraviolet disinfection, chlorine dioxide disinfection or sodium hypochlorite disinfection can be used. Ultraviolet disinfection uses ultraviolet radiation to destroy the DNA structure of microorganisms. The irradiation dose is 20-40 mJ / cm2. When chlorine dioxide or sodium hypochlorite is disinfected, the dosage is controlled at 0.5-2 mg / L according to the residual chlorine requirement to kill the pathogenic microorganisms remaining in the water and ensure that the effluent water quality meets the relevant ecological environment water use or reuse standards.

[0051] With the above structure, the working principle of this case is: when in use, the staff sets a coarse grid at the entrance of the water source into the treatment system, and the grid gap is 10-30 mm, which is used to intercept large floating objects such as branches, plastic bottles, large aquatic plant residues, etc., to prevent them from entering the subsequent treatment equipment and causing blockage. The water passing through the coarse grid flows into the pre-sedimentation tank 11, and the residence time is 1-3 hours, so that some of the sediment and large suspended matter with larger specific gravity in the water naturally settle to the bottom under the action of gravity. The bottom of the pre-sedimentation tank 11 is designed to be conical or bucket-shaped to facilitate the collection and discharge of sediment, which can be regularly discharged through the pre-sedimentation tank 11. The sludge pump transports the precipitated sludge to the sludge treatment area. The staff then introduces the pre-precipitated water into the flocculation reaction tank and adds flocculants to the water. The flocculants can be polyaluminium chloride (PAC) or polyferric sulfate (PFS), etc. The dosage is 20-50 mg / L according to the water quality. At the same time, the stirring device is turned on. First, the flocculant and water are fully mixed with rapid stirring (100-150 rpm) for 1 to 3 minutes, and then switched to slow stirring (30-50 rpm) for 10 to 20 minutes to promote the formation and growth of flocs. After the flocculation reaction, Water flows into the flocculation sedimentation tank 11, which adopts the structure of inclined tube or inclined plate sedimentation tank 11. The rising velocity of water flow is controlled at 0.5-1.5 mm / s. The flocculent body is precipitated in the inclined tube or inclined plate. The precipitation time is 2-4 hours. The precipitated sludge is collected into the sludge bucket by the scraper device, and then transported out by the sludge pump for subsequent treatment, such as sludge dehydration. At this time, the staff starts the motor 604, drives the mounting bracket 605 to rotate, thereby driving the stirring blade 606 to stir the sewage. At this time, the sewage passes through the outlet 608 through the activated carbon 7, quartz sand 8, and ultrafiltration membrane. 9 and disinfection tube 10 for multi-layer filtration treatment. At this time, the staff will let the flocculated and precipitated water enter the quartz sand 8 filter. The filter is filled with quartz sand 8 of different particle sizes, which gradually increase from top to bottom, such as 0.5-1 mm for the upper layer, 1-2 mm for the middle layer, and 2-4 mm for the lower layer. Water passes through the quartz sand 8 layer at a flow rate of 5-10 cubic meters / hour. Quartz sand 8 can further intercept the fine suspended matter, colloid and other impurities remaining in the water. The filtration cycle can be determined according to the water quality of the inlet and outlet water and the filtration pressure difference, which is generally 12-24 hours. When the filtration pressure difference reaches 0.05-0.Backwashing is carried out at 1 MPa, and the water after being filtered by quartz sand 8 enters the activated carbon 7 filter. Activated carbon 7 can choose coconut shell activated carbon 7 or coal activated carbon 7, which has a developed pore structure and can absorb organic pollutants, odor, residual chlorine, etc. in the water. The flow rate of water in the activated carbon 7 filter is controlled at 3-6 cubic meters / hour. The replacement cycle of activated carbon 7 depends on the water quality and the adsorption saturation of activated carbon 7, which is generally 3-6 months. The filtered residue is collected by the collection vehicle 1401 of the collection component 14. The staff can adjust the collection vehicle 1401 to collect the residue by operating the control panel 1404. At this time, if the staff has higher requirements for water quality, ultrafiltration or reverse osmosis membrane treatment can be used. Ultrafiltration The pore size of the filter membrane 9 is generally 0.01-0.1 micron, which can remove macromolecular organic matter, colloids, bacteria, etc. in the water. The operating pressure is 0.1-0.5 MPa. The reverse osmosis membrane can further remove small molecular substances such as soluble salts. The operating pressure is 0.5-1.5 MPa. Finally, the treated water is disinfected by ultraviolet disinfection, chlorine dioxide disinfection or sodium hypochlorite disinfection. Ultraviolet disinfection is to use ultraviolet radiation to destroy the DNA structure of microorganisms. The irradiation dose is 20-40 millijoules / square centimeter. When chlorine dioxide or sodium hypochlorite disinfection, the dosage is controlled at 0.5-2 mg / L according to the residual chlorine requirements to kill the pathogenic microorganisms remaining in the water and ensure that the effluent water quality meets the relevant ecological environment water use or reuse standards. .

[0052] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A filtering and sedimentation device for modern ecological environment management of water resources, characterized in that: include: A support seat (1), a working box (2) is fixedly installed on the top of the support seat (1), a feed port (3) is provided on the outside of the working box (2), a connecting pipe (4) is connected to the inside of the feed port (3), a coarse grid (5) is provided inside the working box (2), a stirring assembly (6) is fixedly installed on the end of the connecting pipe (4) away from the feed port (3), activated carbon (7) is provided inside the working box (2), quartz sand (8) is provided on the outside of the activated carbon (7), an ultrafiltration membrane (9) is provided on the outside of the quartz sand (8), a disinfection tube (10) is fixedly installed on the outside of the ultrafiltration membrane (9), a sedimentation tank (11) is fixedly installed on the bottom of the working box (2), a purification cotton (12) is provided on the top of the sedimentation tank (11), a discharge port (13) is provided on the outside of the working box (2), and a collecting assembly (14) is provided at the bottom of the support seat (1).

2. A filtering and sedimentation device for modern ecological environment management of water resources according to claim 1, characterized in that: The activated carbon (7), quartz sand (8) and ultrafiltration membrane (9) are all of the same size, and are tightly fitted to each other.

3. A filtering and sedimentation device for modern ecological environment management of water resources according to claim 1, characterized in that: The interior of the working box (2) is divided into three layers by a partition, the sedimentation tank (11) is located below the purification cotton (12), and the feed inlet (3) and the discharge outlet (13) are symmetrically distributed about the vertical center line of the working box (2).

4. The filtering and sedimentation device for modern ecological environment management of water resources according to claim 1 is characterized by: The stirring assembly (6) comprises a stirring shell (601), a connection port (602), an introduction tube (603), a motor (604), a mounting bracket (605), a stirring blade (606), a filter screen (607) and a pipe outlet (608); the stirring shell (601) is fixedly mounted on one end of the connecting tube (4) away from the feed port (3); the outer side of the stirring shell (601) is provided with a connection port (602); the outer side of the stirring shell (601) is provided with an introduction tube (603); the stirring shell (601) is provided with a ) is fixedly mounted on the outside of the stirring shell (601), a mounting bracket (605) is fixedly mounted on the output end of the motor (604), a stirring blade (606) is fixedly mounted on the outside of the mounting bracket (605), a filter screen (607) is arranged inside the stirring shell (601), an outlet pipe (608) is opened on the outside of the stirring shell (601), the connecting port (602) is compatible with the connecting pipe (4), and the size of the filter screen (607) is consistent with the diameter inside the stirring shell (601).

5. The filtering and sedimentation device for modern ecological environment management of water resources according to claim 4 is characterized by: The horizontal center lines of the motor (604), the mounting bracket (605) and the stirring blade (606) are located on the same horizontal center line, and the mounting bracket (605) and the stirring blade (606) do not contact the inner wall of the stirring shell (601).

6. The filtering and sedimentation device for modern ecological environment management of water resources according to claim 4 is characterized by: The stirring blades (606) are provided in three identical pieces, and the three stirring blades (606) are distributed in a ring shape with respect to the outer side of the mounting bracket (605).

7. The filtering and sedimentation device for modern ecological environment management of water resources according to claim 1 is characterized by: The collecting assembly (14) comprises a collecting vehicle (1401), universal wheels (1402), a power switch (1403), a control panel (1404), a collecting tank (1405), a collecting funnel (1406), filter sand (1407) and a through hole (1408). The collecting vehicle (1401) is arranged at the bottom of the supporting seat (1), the universal wheels (1402) are arranged at the bottom of the collecting vehicle (1401), and the power switch (1403) is fixedly installed on the outer side of the collecting vehicle (1401). 03), a control panel (1404) is fixedly installed on the outside of the collection vehicle (1401), a collection funnel (1406) is arranged on the top of the collection vehicle (1401), filter sand (1407) is arranged on the top of the collection funnel (1406), a through hole (1408) is opened at the bottom of the collection funnel (1406), the collection funnel (1406) is located inside the working box (2), and the aperture of the collection tank (1405) is adapted to the aperture of the through hole (1408).

8. A filtering and sedimentation device and method for modern ecological environment management of water resources, characterized by: The filtering and sedimentation device for modern ecological environment management of water resources according to any one of claims 1 to 7 further comprises the following steps: Step 1, pre-treatment stage: a coarse screen is set at the entrance of the water source into the treatment system, and the gap of the screen is 10-30 mm, which is used to intercept large floating objects such as branches, plastic bottles, large aquatic plant residues, etc., to prevent them from entering the subsequent treatment equipment and causing blockage. The water passing through the coarse screen flows into the pre-sedimentation tank (11) and stays there for 1-3 hours, so that some of the sediment and large suspended matter with larger specific gravity in the water naturally settle to the bottom under the action of gravity. The bottom of the pre-sedimentation tank (11) is designed to be conical or bucket-shaped to facilitate the collection and discharge of sediments. The precipitated sludge can be regularly transported to the sludge treatment area through a sludge pump; Step 2, flocculation and sedimentation stage: the water after pre-precipitation is introduced into the flocculation reaction tank, and a flocculant is added to the water. The flocculant can be polyaluminium chloride (PAC) or polyferric sulfate (PFS), etc., and the dosage is 20-50 mg / L according to the water quality. At the same time, the stirring device is turned on, and the flocculant and water are fully mixed by rapid stirring (100-150 rpm) for 1-3 minutes, and then the stirring is switched to slow stirring (30-50 rpm) for 10-20 minutes to promote the formation and growth of flocs. The water after the flocculation reaction flows into the flocculation sedimentation tank (11). The flocculation sedimentation tank (11) adopts an inclined tube or inclined plate sedimentation tank (11) structure. The rising flow rate of the water flow is controlled at 0.5-1.5 mm / s. The flocs are precipitated in the inclined tube or inclined plate for 2-4 hours. The precipitated sludge is collected into the sludge hopper by the sludge scraper, and then transported out by the sludge pump for subsequent treatment, such as sludge dehydration. Step 3, filtration and collection stage: the water after flocculation and precipitation enters the quartz sand (8) filter, and the filter is filled with quartz sand (8) of different particle sizes, and the particle size gradually increases from top to bottom, such as 0.5-1 mm for the upper layer, 1-2 mm for the middle layer, and 2-4 mm for the lower layer. The water passes through the quartz sand (8) layer at a flow rate of 5-10 cubic meters per hour. The quartz sand (8) can further intercept the fine suspended matter, colloid and other impurities remaining in the water. The filtration cycle can be determined according to the water quality of the inlet and outlet water and the filtration pressure difference, which is generally 12-24 hours. When the filtration pressure difference reaches 0 .05-0.1 MPa, backwashing is performed, and the water after being filtered by quartz sand (8) enters the activated carbon (7) filter. The activated carbon (7) can be coconut shell activated carbon (7) or coal activated carbon (7). It has a developed pore structure and can absorb organic pollutants, odor, residual chlorine, etc. in the water. The flow rate of water in the activated carbon (7) filter is controlled at 3-6 cubic meters / hour. The replacement cycle of the activated carbon (7) is determined according to the water quality and the adsorption saturation of the activated carbon (7), generally 3-6 months, and the filtered residue is collected; Step 4, deep treatment and disinfection stage: For situations with high requirements for water quality, ultrafiltration or reverse osmosis membrane treatment can be used. The pore size of the ultrafiltration membrane (9) is generally 0.01-0.1 microns, which can remove large molecular organic matter, colloids, bacteria, etc. in the water. The operating pressure is 0.1-0.5 MPa. The reverse osmosis membrane can further remove small molecular substances such as soluble salts. The operating pressure is 0.5-1.5 MPa. Finally, the treated water is disinfected by ultraviolet disinfection, chlorine dioxide disinfection or sodium hypochlorite disinfection. Ultraviolet disinfection is to use ultraviolet radiation to destroy the DNA structure of microorganisms. The irradiation dose is 20-40 millijoules / square centimeter. When chlorine dioxide or sodium hypochlorite disinfection is used, the dosage is controlled at 0.5-2 mg / L according to the residual chlorine requirement to kill the pathogenic microorganisms remaining in the water and ensure that the effluent water quality meets the relevant ecological environment water use or reuse standards.

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