Equipment and method for deeply purifying and recycling low-fluorine rainwater

Abstract

The invention discloses deep purification and recycling equipment and method for low-fluorine rainwater, the deep purification and recycling equipment comprises a pretreatment structure, the pretreatment structure is communicated with a precipitation structure and is used for carrying out precipitation treatment on the low-fluorine rainwater, and the precipitation structure is communicated with a deep purification structure and is used for carrying out ultrafiltration treatment on precipitated water; the pre-treatment structure comprises a first automatic filtering assembly, the lower side of the first automatic filtering assembly is communicated with a chemical mixing assembly, and the chemical mixing assembly is communicated with a second automatic filtering assembly through a second liquid outlet pipe; the second automatic filtering assembly communicates with the horizontal screw centrifuge body and is used for separating mixed chemicals and flocculated impurities, and the horizontal screw centrifuge body communicates with the third liquid outlet pipe. According to the low-fluorine rainwater deep purification and recycling equipment and method, low-fluorine rainwater can be pretreated, redundant impurities are prevented from entering the settling tank, and therefore the low-fluorine rainwater deep purification and recycling efficiency is improved. Therefore, later cleaning difficulty is increased, and the service life of the whole precipitation structure is affected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fireproof sealing strip, in particular to a low-fluorine rainwater deep purification recycling equipment and method. BACKGROUND

[0002] Rain is water droplets falling from the clouds, and water on land and sea surface evaporates into water vapor, which rises to a certain height and becomes small water droplets when it cools down. These small water droplets form clouds, and they collide with each other in the clouds to merge into large water droplets. When it is too large for the air to hold, it falls from the clouds and forms rain. Rainwater is the most important freshwater resource in human life, and plants also rely on the nourishment of rain and dew to grow. However, floods caused by heavy rain can also bring great disaster to humans. During the falling process of rain, especially when it forms surface runoff (such as initial rainwater), it will wash and leach various contaminated surfaces, thereby collecting fluorine pollutants, which is the main reason for the increase in the concentration of fluorine in rainwater. Industrial rainwater washes the roofs, grounds and roads of factories such as aluminum smelting, phosphate fertilizer production, steel, glass, ceramics, semiconductor manufacturing, etc. These industrial activities may use fluorine-containing raw materials or produce fluorine-containing exhaust gas, dust, which is dissolved by rainwater after settling on the ground, which is also the main reason for the increase in the concentration of fluorine in rainwater. The existing low-fluorine rainwater is not pretreated before being directly introduced into the sedimentation tank, which increases impurities and sludge sedimentation, and increases the workload of sludge cleaning in the later stage. SUMMARY

[0003] The present application relates to the technical field of fireproof sealing strip, in particular to a low-fluorine rainwater deep purification recycling equipment and method.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a low-fluorine rainwater deep purification recycling equipment and method, comprising a pretreatment structure, the pretreatment structure is connected to a sedimentation structure and is used for sedimentation treatment of low-fluorine rainwater, the sedimentation structure is connected to a deep purification structure and is used for ultrafiltration treatment of the water after sedimentation, and the deep purification structure is connected to a resin treatment assembly and is used for defluorination and purification of the purified rainwater again.

[0005] The pretreatment structure comprises a first automatic filtration assembly, the first automatic filtration assembly is connected to a mixed medicine assembly on the lower side, the mixed medicine assembly is connected to a second automatic filtration assembly through a second liquid outlet pipe, the second automatic filtration assembly is connected to a horizontal screw centrifuge body and is used for separation treatment of mixed medicine and flocculation impurities, and the horizontal screw centrifuge body is connected to a third liquid outlet pipe.

[0006] The first automatic filtering assembly comprises a first filtering pipe, a second filtering pipe communicated with the lower side of the first filtering pipe, a waste pipe communicated with the left side of the second filtering pipe and the first filtering pipe, a first feeding pipe communicated with the upper side of the first filtering pipe, and a first driving source installed on the right side of the first filtering pipe, which drives a gear set to rotate and drives a spiral rod to rotate, and the spiral rod is arranged in the first filtering pipe and the second filtering pipe.

[0007] The medicine mixing assembly comprises a medicine mixing box, a first medicine feeding pipe communicated with the upper side of the medicine mixing box, and a second driving source installed on the upper side of the medicine mixing box, which drives a first stirring rod to rotate and drives a first scraping plate to rotate, and a pre-pulverizing knife is installed on the lower side of the first stirring rod.

[0008] Preferably, the precipitation structure comprises a precipitation box, a liquid inlet groove is installed on the left side in the precipitation box, the liquid inlet groove is communicated with the mixing and precipitation assembly on the lower side, the liquid inlet groove is communicated with the second medicine feeding pipe on the front side, the baffle plate, the honeycomb plate and the clean water area are arranged on the right side of the liquid inlet groove, the baffle plate is located on the lower side of the honeycomb plate, the honeycomb plate is located on the lower side of the clean water area, and the fourth liquid outlet pipe is communicated with the right side of the clean water area.

[0009] Preferably, the mixing and precipitation assembly comprises a precipitation tank, a third driving source is installed on the right side of the precipitation tank, the third driving source drives a second stirring rod to rotate, the second stirring rod is located on the upper side of the sludge hopper, and a sludge pipe is arranged between the sludge hoppers.

[0010] By adopting the above technical scheme, the rainwater is treated by mixing medicine through the mixing and precipitation assembly.

[0011] Preferably, the deep purification structure comprises a multi-medium filter box, a second filter screen is installed in the multi-medium filter box, a filter layer is formed between the second filter screen and the multi-medium filter box, a stirring assembly is installed on the multi-medium filter box, the multi-medium filter box is communicated with an ultrafiltration assembly through a fifth liquid outlet pipe, and the ultrafiltration assembly is communicated with a first backwashing pipe.

[0012] Preferably, the stirring assembly comprises a fourth driving source, the fourth driving source drives a third stirring rod to rotate and drives a second scraping plate to rotate, a blowdown pipe is communicated with the left side of the multi-medium filter box, and a fifth liquid outlet pipe is arranged at the connection position of the blowdown pipe and the multi-medium filter box.

[0013] By adopting the above technical scheme, the filter medium is stirred and cleaned through the stirring assembly.

[0014] Preferably, the ultrafiltration assembly comprises an ultrafiltration filter body, the ultrafiltration filter body is installed on a support frame, a clean water pipe is communicated with the upper side of the ultrafiltration filter body, a water quality monitor body is installed on the clean water pipe, and the clean water pipe communicated with the clean water pipe is arranged on the right side of the water quality monitor body.

[0015] By adopting the above technical scheme, the rainwater is treated by filtering through the ultrafiltration assembly.

[0016] Preferably, the resin treatment assembly comprises a resin filter core machine, a water inlet pipe connected to the upper side of the resin filter core machine, and a clean water pipe connected to the lower side of the resin filter core machine.

[0017] By using the above technical scheme, the fluorine element and other impurities in the rainwater are treated again by the resin treatment assembly, so as to ensure the quality of the purified water.

[0018] Compared with the prior art, the low-fluorine rainwater deep purification and recycling equipment and method has the advantages that:

[0019] (1) The low-fluorine rainwater can be pretreated, so that the excess impurities are prevented from entering the sediment tank, the difficulty of cleaning in the later period is increased, and the service life of the entire sediment structure is affected.

[0020] (2) The rainwater treated by sedimentation can be directly subjected to deep ultrafiltration treatment, so as to ensure the quality of the rainwater recycling.

[0021] (3) The purified water treated by deep ultrafiltration can be subjected to ion exchange adsorption treatment, so as to ensure the secondary purification treatment of the purified water, ensure the recycling effect, and further treat the fluorine element in the purified water, so as to ensure the treatment effect of the fluorine element. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a front view structural schematic diagram of the present application;

[0023] Figure 2 is a rear view structural schematic diagram of the present application;

[0024] Figure 3 is a pretreatment structural schematic diagram of the present application;

[0025] Figure 4 is a sedimentation structural schematic diagram of the present application;

[0026] Figure 5 is a stirring assembly structural schematic diagram of the present application;

[0027] Figure 6 is an ultrafiltration assembly structural schematic diagram of the present application;

[0028] Figure 7 is a resin treatment assembly structural schematic diagram of the present application;

[0029] Figure 8 is a mixed medicine assembly structural schematic diagram of the present application.

[0030] In the figure: 1, pretreatment structure; 11, first automatic filtering assembly; 111, first filtering pipe; 112, second filtering pipe; 113, first filtering screen; 114, first feeding pipe; 115, waste pipe; 116, first driving source; 117, gear set; 118, screw rod; 119, first liquid outlet pipe; 12, medicine mixing assembly; 121, medicine mixing box; 122, first medicine feeding pipe; 123, second driving source; 124, first stirring rod; 125, first scraping plate; 126, pre-pulverizing knife; 13, second liquid outlet pipe; 14, second automatic filtering assembly; 15, horizontal screw centrifuge body; 16, third liquid outlet pipe; 2, precipitation structure; 21, precipitation box; 22, liquid inlet groove; 23, second medicine feeding pipe; 24, mixing and precipitation assembly; 241, precipitation groove; 242, third driving source; 243, second stirring rod; 244, sludge hopper; 245, sludge pipe; 25, baffle plate; 26, honeycomb plate; 27, clean water area; 28, fourth liquid outlet pipe; 3, deep purification structure; 31, multi-medium filtering box; 32, second filtering screen; 33, filtering layer; 34, stirring assembly; 341, fourth driving source; 342, third stirring rod; 343, second scraping plate; 344, blowdown port; 345, blowdown pipe; 35, fifth liquid outlet pipe; 36, ultrafiltration assembly; 361, ultrafiltration filter body; 362, support frame; 363, clean water pipe; 364, water quality monitor body; 37, first backwashing pipe; 4, resin treatment assembly; 41, resin filter cartridge machine; 42, clean water pipe; 43, water inlet pipe. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0032] Please refer to Figures 1-8 , the present application provides a technical solution: a low-fluorine rainwater deep purification and reuse equipment and method, such as Figure 1 、 Figure 2 、 Figure 3 and Figure 8As shown, including pre-processing structure 1, pre-processing structure 1 includes the first automatic filter assembly 11, the first automatic filter assembly 11 lower side communication mixed medicine component 12, mixed medicine component 12 through the second liquid outlet pipe 13 communication second automatic filter assembly 14, second automatic filter assembly 14 communication horizontal screw centrifuge body 15 and is used for separating treatment to mixed medicine and flocculation impurities, horizontal screw centrifuge body 15 communication third liquid outlet pipe 16, first automatic filter assembly 11 includes first filter pipe 111, first filter pipe 111 lower side communication second filter pipe 112, second filter pipe 112 and first filter pipe 111 left side are all connected with waste pipe 115, first filter pipe 111 upper side communication first feed pipe 114, first filter pipe 111 right side is installed with first driving source 116, first driving source 116 drives gear set 117 rotation and drives screw rod 118 to rotate, second filter pipe 112 and first filter pipe 111 are all provided with screw rod 118, second filter pipe 112 lower side communication first liquid outlet pipe 119, mixed medicine component 12 includes mixed medicine box 121, mixed medicine box 121 upper side communication first medicine pipe 122, mixed medicine box 121 upper side is installed with second driving source 123, second driving source 123 drives first stirring rod 124 rotation and drives first scraper 125 to rotate, first stirring rod 124 lower side is installed with pre-pulverization cutter 126;

[0033] Wherein, the whole equipment is electrically connected with PLC control device for controlling the whole equipment, and the PLC control device is installed on the left side of the pre-processing structure 1;

[0034] Specifically, the first filter screen 113 is provided with two groups, and the two groups of first filter screens 113 have different mesh densities, so as to ensure the impurity pretreatment quality;

[0035] The first driving source 116, the second driving source 123, the third power source 242 and the fourth power source 341 are all motors, and the motor is prior art;

[0036] Further, the first automatic filter assembly 11 and the second automatic filter assembly 14 are the same structure;

[0037] The horizontal screw centrifuge body 15 is prior art, and the wastewater after mixed medicine coagulation enters the high-speed rotating drum, under the action of strong centrifugal force, the solid floc with large density rapidly settles and adheres to the inner wall of the drum, the screw conveyor in the drum and the drum have a small speed difference, the solid sludge deposited on the wall is continuously pushed to the conical end of the drum, in the pushing process, the sludge is further extruded in the narrow space, and more water is squeezed out, the dry mud cake after dewatering is discharged from the conical end of the drum, and the clarified liquid centrifugate is discharged from the overflow weir plate on the other end of the drum;

[0038] In the above scheme, under the auxiliary action of the PLC control device, the first drive source 116, the second drive source 123 and the horizontal screw centrifuge body 15 are started, the low-fluorine rainwater enters the first filter pipe 111 through the first feed pipe 114, under the auxiliary action of the first drive source 116 on the first filter pipe 111, the gear set 117 is driven to rotate, the gear set 117 drives the spiral rod 118 to rotate and automatically transports the impurities on the first filter screen 113 in the first filter pipe 111 and the second filter pipe 112, and finally the impurities are discharged through the waste pipe 115, the pre-filtered rainwater enters the medicine mixing box 121 through the first liquid outlet pipe 119, the required medicament enters the medicine mixing box 121 through the first medicine inlet pipe 122, the medicament includes defluorination agent, polyaluminum chloride, polyferric sulfate and other medicaments, under the auxiliary action of the second drive source 123, the first stirring rod 124 is driven to rotate, the first stirring rod 124 rotates to accelerate the contact between the medicament and the rainwater, and finally the coagulant is added for stirring reaction, finally the flocculation waste is precipitated inside the lower side of the medicine mixing box 121, after the whole work is completed, under the auxiliary action of the PLC control device, the electric valve and the sewage pump on the second liquid outlet pipe 13 are started, under the auxiliary action of the pre-pulverizing knife 126, the large flocculation impurities are pre-pulverized to avoid blocking the second liquid outlet pipe 13, under the auxiliary action of the first scraper 125 on the first stirring rod 124, it is ensured that the inner wall of the medicine mixing box 121 is clean and thorough, the waste liquid and impurities are stored in the second automatic filter assembly 14 through the second liquid outlet pipe 13, and the rainwater after pretreatment enters the horizontal screw centrifuge body 15 under the auxiliary action of the horizontal screw centrifuge body 15, the flocculation impurities are separated from the clean water, the clean water enters the sedimentation structure 2 through the third liquid outlet pipe 16, and the impurities are discharged through the waste pipe for collection and treatment.

[0039] As shown in Figure 1 , Figure 2 and Figure 4 , the pretreatment structure 1 is connected with the sedimentation structure 2 and is used for sedimentation treatment of low-fluorine rainwater, the sedimentation structure 2 includes a sedimentation tank 21, a liquid inlet groove 22 is installed inside the left side of the sedimentation tank 21, the liquid inlet groove 22 is connected with a mixed sedimentation assembly 24 at the lower side, the liquid inlet groove 22 is connected with a second medicine inlet pipe 23 at the front side, baffles 25, honeycomb plates 26 and a clean water area 27 are arranged at the right side of the liquid inlet groove 22, the baffles 25 are located at the lower side of the honeycomb plates 26, the honeycomb plates 26 are located at the lower side of the clean water area 27, the clean water area 27 is connected with a fourth liquid outlet pipe 28 at the right side, the mixed sedimentation assembly 24 includes a sedimentation groove 241, a third power source 242 is installed at the right side of the sedimentation groove 241, the third power source 242 drives a second stirring rod 243 to rotate, the second stirring rod 243 is located at the upper side of a sludge hopper 244, and a sludge pipe 245 is arranged between the sludge hoppers 244;

[0040] The sludge hopper 244 and the sludge pipe 245 are provided in multiple groups, and the multiple groups of sludge hoppers 244 and sludge pipes 245 are distributed at equal intervals in the sedimentation tank 241, and the sludge hoppers 244 and the sludge pipes 245 are arranged in a staggered manner;

[0041] Specifically, the honeycomb plate 26 is provided in multiple groups, and the multiple groups of honeycomb plates 26 are arranged in parallel;

[0042] In the above scheme, the clean water enters the sedimentation tank 21 through the third liquid outlet pipe 16 into the liquid inlet groove 22, the treated rainwater is stored in the sedimentation tank 241 through the liquid inlet groove 22, sodium hypochlorite or other required liquid medicine is added into the sedimentation tank 241 through the second medicine inlet pipe 23, the third power source 242 is started under the auxiliary action of the PLC control device, the second stirring rod 243 is driven to rotate by the third power source 242, and the medicine is mixed with the rainwater, so as to accelerate the reaction speed, the flow path of the sewage in the sedimentation tank is changed under the auxiliary action of the baffle plate 25 and the honeycomb plate 26, so as to prolong the residence time of the suspended matter in the tank, so that it has more sufficient time to settle, finally the impurities in the rainwater are precipitated on both sides of the sludge hopper 244, the sludge pump on the sludge pipe 245 is started under the auxiliary action of the PLC control device, so as to treat the sludge on both sides of the sludge hopper 244, the clean water treated by the baffle plate 25 and the honeycomb plate 26 enters the clean water area 27, and finally is discharged to the multi-medium filter tank 31 through the fourth liquid outlet pipe 28.

[0043] As shown in Figure 1 , Figure 2 , Figure 5 and Figure 6 , the sedimentation structure 2 is connected with the depth purification structure 3 and is used for ultrafiltration treatment of the precipitated water, the depth purification structure 3 includes a multi-medium filter tank 31, a second filter screen 32 is installed in the multi-medium filter tank 31, a filter layer 33 is enclosed between the second filter screen 32 and the multi-medium filter tank 31, a stirring assembly 34 is installed on the multi-medium filter tank 31, the multi-medium filter tank 31 is connected with an ultrafiltration assembly 36 through a fifth liquid outlet pipe 35, the ultrafiltration assembly 36 is connected with a first backwashing pipe 37, the stirring assembly 34 includes a fourth power source 341, the fourth power source 341 drives a third stirring rod 342 to rotate and drives a second scraper 343 to rotate, a blowdown pipe 345 is connected to the left side of the multi-medium filter tank 31, a fifth liquid outlet pipe 35 is arranged at the connection position of the blowdown pipe 345 and the multi-medium filter tank 31, the ultrafiltration assembly 36 includes an ultrafiltration filter body 361, the ultrafiltration filter body 361 is installed on a support frame 362, a clean water pipe 363 is connected to the upper side of the ultrafiltration filter body 361, a water quality monitor body 364 is installed on the clean water pipe 363, and the clean water pipe 363 connected to the right side of the water quality monitor body 364 is connected with the clean water pipe 363;

[0044] The second filter screen 32 is provided with three groups, and the three groups of second filter screen 32 divide the multi-medium filter box 31 into four groups of filter layers 33, the four groups of filter layers 33 sequentially store quartz sand filter material, modified fiber ball, active alumina ball water purification filter material and active carbon filter material, and the multi-medium multi-layer sequentially filters, so that the filtering effect is ensured.

[0045] Further, the four groups of filter layers 33 are all communicated with the blowdown pipe 345 on the left side, and the fifth liquid outlet pipe 35 is communicated with the blowdown pipe 345 on the left side, so that the cleaned wastewater is treated in the later period.

[0046] The blowdown pipe 345 is communicated with the blowdown pipe 345 on the left side, and the fifth liquid outlet pipe 35 is communicated with the blowdown pipe 345 on the left side, so that the cleaned wastewater is treated in the later period.

[0047] Specifically, the ultrafiltration assembly 36 is provided with at least two groups, and the two groups of ultrafiltration assemblies 36 are arranged in parallel, and the support frame 362 is provided with at least seven groups of ultrafiltration filter bodies 361, the seven groups of ultrafiltration filter bodies 361 are distributed on the support frame 362 at equal intervals, the ultrafiltration filter body 361 is prior art, the ultrafiltration filter body 361 is a process of separating solute and solvent, usually water, under the driving of pressure difference, by using a semi-permeable membrane with ultra-fine pore structure, compared with traditional filtration technology, the ultrafiltration membrane has the characteristics of small pore size generally between 0.01 and 0.1 microns, high separation efficiency, low operating pressure, low energy consumption, etc., can effectively remove suspended solids, colloids, bacteria, viruses and most organic matter in water, while retaining beneficial minerals and trace elements for the human body;

[0048] The water quality monitor body 364 is prior art, and is used for real-time monitoring of purified water after deep processing of the ultrafiltration filter body 361, the first backflushing pipe 37 is communicated with the backflushing device, the backflushing device is prior art, and the ultrafiltration filter body 361 is backflushed periodically under the auxiliary action of the backflushing device, and the wastewater after backflushing is discharged through the wastewater pipe on the ultrafiltration filter body 361.

[0049] In the preferred embodiment of the present application, the clean water after precipitation enters the multi-medium filter tank 31 through the fourth liquid outlet pipe 28, and is filtered successively under the auxiliary action of the multi-medium filter material in the filter layer 33 in the multi-medium filter tank 31, and enters the next layer of filter material through the second filter screen 32, and the filtered clean water enters the ultrafiltration filter body 361 through the fifth liquid outlet pipe 35, and is subjected to ultrafiltration treatment under the auxiliary action of the ultrafiltration filter body 361 on the support frame 362, and the treated purified water enters the water quality monitor body 364 through the water purification pipe 363 for detection, if the detection is unqualified, the PLC control device closes the electric valve on the fifth liquid outlet pipe 35 of the ultrafiltration assembly 36, and opens the electric valve in the fifth liquid outlet pipe 35 of another ultrafiltration assembly 36, so as to start the backwashing device on the first backwashing pipe 37, and the ultrafiltration filter body 361 is backwashed under the auxiliary action of the backwashing device, thereby prolonging the service life of the entire ultrafiltration filter body 361, and the qualified purified water enters the resin filter element machine 41 through the water purification pipe 363, and the clean water enters the multi-medium filter tank 31 through the clean water pipe on the upper side of the multi-medium filter tank 31, and the fourth power source 341 is started under the auxiliary action of the PLC control device, the third stirring rod 342 is started under the auxiliary action of the fourth power source 341, and the second scraping plate 343 is rotated under the auxiliary action of the third stirring rod 342, so as to pre-wash the filter material, the PLC control device starts the electric valve on the blow-off pipe 345, a part of the generated wastewater is discharged through the blow-off port 344 and the blow-off pipe 345, and a part of the wastewater is discharged through the blow-off pipe 345 on the left side of the fifth liquid outlet pipe 35, and the mesh density of the second filter screen 32 in the left blow-off port 344 is smaller than the volume of the filter material;

[0050] As shown in Figure 1 , Figure 2 , Figure 6 and Figure 7 , the deep purification structure 3 is connected with the resin treatment assembly 4 and again removes fluorine and purifies the purified rainwater, the resin treatment assembly 4 includes the resin filter element machine 41, the upper side of the resin filter element machine 41 is connected with the water inlet pipe 43, and the lower side of the resin filter element machine 41 is connected with the clean water pipe 42;

[0051] The resin filter element machine 41 is provided with three groups, the three groups of resin filter element machines 41 are connected through the connecting pipe, the connecting pipe is connected with the resin filter element machine 41 through the water inlet pipe 43, and the electric valve is installed on each group of water inlet pipes 43;

[0052] Further, the core principle of the resin filter is based on ion exchange technology, the main components of scale in water are absorbed by cation exchange resin, and sodium ions are released to reduce water hardness, the resin filter contains fine plastic beads, the surface of the beads is covered with sodium ion exchange sites, when water flows through the resin, calcium and magnesium ions contact the resin and replace sodium ions, forming calcium-sodium exchange and magnesium-sodium exchange, by soaking the resin in saturated brine, sodium ions bind to exchange sites on the resin, restoring its adsorption capacity, this process is called "regeneration" and can be recycled.

[0053] In the preferred embodiment of the present application, the resin filter is activated under the assistance of the PLC control device, and the purified water is further adsorbed under the assistance of the resin filter, thereby ensuring the low-fluorine treatment effect and the quality of the purified water for reuse, and the purified water is reused through the clean water pipe 42 to ensure the quality of the reused water.

[0054] Working principle: when using the low-fluorine rainwater deep purification and reuse equipment and method, the external power supply is connected, the low-fluorine rainwater is pretreated through the pretreatment structure 1, the pretreated rainwater is settled through the settlement structure 2, the rainwater is ultrafiltered through the deep purification structure 3, and the purified water is adsorbed through the resin treatment assembly 4, and the contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0055] The terms "center", "longitudinal", "transverse", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is a simplified description for the convenience of describing the present application, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the protection scope of the present application.

[0056] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or make equivalent replacements to part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A low-fluoride rainwater deep purification and reuse device, characterized in that, The application relates to a rainwater treatment device, which comprises a pretreatment structure (1), a precipitation structure (2) connected with the pretreatment structure (1) and used for carrying out precipitation treatment on low-fluorine rainwater, a deep purification structure (3) connected with the precipitation structure (2) and used for carrying out ultrafiltration treatment on the precipitated water, and a resin treatment assembly (4) connected with the deep purification structure (3) and used for carrying out defluorination and purification on the purified rainwater again. The pretreatment structure (1) comprises a first automatic filtering assembly (11), a mixed medicine assembly (12) connected with the lower side of the first automatic filtering assembly (11), a second automatic filtering assembly (14) connected with the mixed medicine assembly (12) through a second liquid outlet pipe (13), a horizontal screw centrifuge body (15) connected with the second automatic filtering assembly (14) and used for separating and treating mixed medicine and flocculation impurities, and a third liquid outlet pipe (16) connected with the horizontal screw centrifuge body (15). The first automatic filtering assembly (11) comprises a first filtering pipe (111), a second filtering pipe (112) connected with the lower side of the first filtering pipe (111), a waste pipe (115) connected with the left sides of the first filtering pipe (111) and the second filtering pipe (112), a first feeding pipe (114) connected with the upper side of the first filtering pipe (111), a first driving source (116) installed on the right side of the first filtering pipe (111), a gear set (117) driven by the first driving source (116) to rotate and drive a screw rod (118) to rotate, and the screw rods (118) arranged in the first filtering pipe (111) and the second filtering pipe (112). The mixed medicine assembly (12) comprises a mixed medicine box (121), a first medicine feeding pipe (122) connected with the upper side of the mixed medicine box (121), a second driving source (123) installed on the upper side of the mixed medicine box (121), a first stirring rod (124) driven by the second driving source (123) to rotate and drive a first scraping plate (125) to rotate, and a pre-smashing knife (126) installed on the lower side of the first stirring rod (124).

2. The low-fluoride rainwater depth purification and reuse equipment according to claim 1, characterized in that: The precipitation structure (2) comprises a precipitation box (21), a liquid inlet groove (22) installed on the left side in the precipitation box (21), a mixed material precipitation assembly (24) connected with the lower side of the liquid inlet groove (22), a second medicine feeding pipe (23) connected with the front side of the liquid inlet groove (22), a baffle (25), a honeycomb plate (26) and a clean water area (27) arranged on the right side of the liquid inlet groove (22), the baffle (25) being located on the lower side of the honeycomb plate (26), the honeycomb plate (26) being located on the lower side of the clean water area (27), and the clean water area (27) being connected with a fourth liquid outlet pipe (28) on the right side.

3. A low-fluoride rainwater depth purification and reuse device according to claim 2, characterized in that: The mixed material precipitation assembly (24) comprises a precipitation groove (241), a third driving source (242) installed on the right side of the precipitation groove (241), a second stirring rod (243) driven by the third driving source (242) to rotate, the second stirring rod (243) being located on the upper side of a sludge hopper (244), and a sludge pipe (245) arranged between the sludge hoppers (244).

4. The low-fluoride rainwater depth purification and reuse equipment according to claim 1, characterized in that: The deep purification structure (3) comprises a multi-medium filter box (31), a second filter screen (32) is installed in the multi-medium filter box (31), a filter layer (33) is enclosed between the second filter screen (32) and the multi-medium filter box (31), a stirring assembly (34) is installed on the multi-medium filter box (31), the multi-medium filter box (31) is communicated with an ultrafiltration assembly (36) through a fifth liquid outlet pipe (35), and the ultrafiltration assembly (36) is communicated with a first backwashing pipe (37).

5. The low-fluoride rainwater depth purification and reuse equipment according to claim 4, characterized in that: The stirring assembly (34) comprises a fourth power source (341), the fourth power source (341) drives a third stirring rod (342) to rotate and drives a second scraping plate (343) to rotate, a blowdown pipe (345) is communicated with the left side of the multi-medium filter box (31), and the blowdown pipe (345) is provided with the fifth liquid outlet pipe (35) at the connection position of the blowdown pipe (345) and the multi-medium filter box (31).

6. The low-fluoride rainwater depth purification and reuse device according to claim 4, characterized in that: The ultrafiltration assembly (36) comprises an ultrafiltration filter body (361), the ultrafiltration filter body (361) is installed on a support frame (362), a water quality monitor body (364) is installed on the upper side of the ultrafiltration filter body (361), and the water quality monitor body (364) is arranged on the right side of the water quality monitor body (364) and communicated with the water quality monitor body (364).

7. The low-fluoride rainwater depth purification and reuse apparatus according to claim 1, characterized in that: The resin treatment assembly (4) comprises a resin filter core machine (41), the resin filter core machine (41) is communicated with a water inlet pipe (43) on the upper side, and the resin filter core machine (41) is communicated with a clean water pipe (42) on the lower side.

8. A method for low-fluoride rainwater advanced purification and reuse, characterized in that, Comprise the following steps, (1) the raw material is pretreated a. under the auxiliary action of the PLC control device, the first driving source (116), the second driving source (123) and the horizontal screw centrifuge body (15) are started, low-fluorine rainwater enters the first filter pipe (111) through the first feed pipe (114), under the auxiliary action of the first driving source (116) on the first filter pipe (111), the gear set (117) is driven to rotate, the gear set (117) is driven to rotate and the spiral rod (118) is driven to rotate, and the impurities on the first filter screen (113) in the first filter pipe (111) and the second filter pipe (112) are automatically transported, and finally the impurities are discharged through the waste pipe (115); b, the pre-filtered rainwater enters the mixed medicine box (121) through the first liquid outlet pipe (119), and the required medicament enters the mixed medicine box (121) through the first medicine inlet pipe (122), the medicament including defluorination agent, polyaluminum chloride, polyferric sulfate and other medicaments, under the auxiliary action of the second driving source (123), the first stirring rod (124) is driven to rotate, the first stirring rod (124) rotates to accelerate the contact between the medicament and the rainwater, and finally the coagulant is added for stirring reaction, finally the flocculation waste is precipitated in the lower side of the mixed medicine box (121), after the whole work is completed, under the auxiliary action of the PLC control device, the electric valve and the sewage pump on the second liquid outlet pipe (13) are started, under the auxiliary action of the pre-pulverizing knife (126), the large flocculation impurities are pre-pulverized, so as to avoid the blockage of the second liquid outlet pipe (13), and under the auxiliary action of the first scraper (125) on the first stirring rod (124), the inner wall of the mixed medicine box (121) is ensured to be clean and thorough; c, the waste liquid and impurities are stored in the second automatic filtering assembly (14) through the second liquid outlet pipe (13), and are pretreated again under the auxiliary action of the second automatic filtering assembly (14), the pretreated rainwater enters the horizontal screw centrifuge body (15), and the flocculation impurities are separated from the clean water under the auxiliary action of the horizontal screw centrifuge body (15), the clean water enters the sedimentation structure (2) through the third liquid outlet pipe (16), and the impurities are discharged through the waste pipe for collection and treatment; (2) the pretreated rainwater is subjected to sedimentation treatment a, the clean water enters the sedimentation tank (21) through the third liquid outlet pipe (16), the treated rainwater is stored in the sedimentation tank (241) through the liquid inlet groove (22), sodium hypochlorite or other required liquid medicine is added into the sedimentation tank (241) through the second medicine inlet pipe (23), under the auxiliary action of the PLC control device, the third power source (242) is started, the third power source (242) drives the second stirring rod (243) to rotate and drives the medicament to mix with the rainwater, so as to accelerate the reaction speed, under the auxiliary action of the baffle (25) and the honeycomb plate (26), the flow path of the sewage in the sedimentation tank is changed, so as to prolong the residence time of the suspended matter in the tank, so that it has more sufficient time to settle, finally the impurities in the rainwater are precipitated on both sides of the sludge hopper (244), under the auxiliary action of the PLC control device, the sludge pump on the sludge pipe (245) is started, so as to treat the sludge on both sides of the sludge hopper (244), the clean water treated by the baffle (25) and the honeycomb plate (26) enters the clean water area (27), and finally is discharged to the multi-medium filter box (31) through the fourth liquid outlet pipe (28); (3) the rainwater treated by sedimentation is subjected to deep ultrafiltration treatment a、The precipitated clean water enters the multi-medium filter box (31) through the fourth liquid outlet pipe (28), is filtered in the multi-medium filter material in the filter layer (33) in the multi-medium filter box (31) in turn with the aid of the multi-medium filter material, and enters the next layer of filter material through the second filter screen (32), and the filtered clean water enters the ultrafiltration filter body (361) through the fifth liquid outlet pipe (35), is subjected to ultrafiltration treatment with the aid of the ultrafiltration filter body (361) on the support frame (362), and the treated purified water enters the water quality monitor body (364) through the water purification pipe (363) for detection, if the detection is unqualified, the PLC control device closes the electric valve on the fifth liquid outlet pipe (35) of the ultrafiltration assembly (36) and opens the electric valve in the fifth liquid outlet pipe (35) of another ultrafiltration assembly (36), so that the backwashing device on the first backwashing pipe (37) is started, and the ultrafiltration filter body (361) is backwashed with the aid of the backwashing device, thereby prolonging the service life of the entire ultrafiltration filter body (361); b、The qualified purified water enters the resin filter element machine (41) through the water purification pipe (363), the clean water enters the multi-medium filter box (31) through the clean water pipe on the upper side of the multi-medium filter box (31), the fourth power source (341) is started with the aid of the PLC control device, the third stirring rod (342) is started with the aid of the fourth power source (341), the second scraping plate (343) is driven to rotate with the aid of the third stirring rod (342), so that the filter material is pre-flushed, the PLC control device starts the electric valve on the blow-off pipe (345), part of the generated wastewater is discharged through the blow-off port (344) and the blow-off pipe (345), part of the wastewater is discharged through the blow-off pipe (345) on the left side of the fifth liquid outlet pipe (35), and the mesh density of the second filter screen (32) in the left blow-off port (344) is smaller than the volume of the filter material; (4) Finally, the resin adsorption treatment a、The resin filter element machine (41) is started with the aid of the PLC control device, and the purified water is adsorbed again with the aid of the resin filter element machine (41), so as to ensure the low-fluorine treatment effect and the quality of the purified water for reuse, and the purified water is reused through the clean water pipe (42), so as to ensure the quality of the reused water.

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