Integrated coagulation air floatation solid-liquid separator
By designing an integrated concrete air-floating solid-liquid separator, the coagulation precipitation and micro-bubble air-floating separation are integrated, which solves the problem of poor results in the pretreatment or deep treatment process of existing wastewater treatment processes, and achieves high efficiency , high load solid-liquid separation effect.
Patent Information
- Application Number
- CN202421138902.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-05-23
AI Technical Summary
The existing sewage treatment process is not effective in pretreatment or deep treatment, especially when treating sewage wastewater with large micro-suspended content, it is difficult to achieve high efficiency and high loads with a single coagulation precipitation or micro-bubble air float separation technology. Purpose.
An integrated concrete air-floating solid-liquid separator is designed to integrate coagulation precipitation and micro-bubble air-floating separation, and use technical means such as porous water distribution plates and porous inclined pipe fillers to achieve solid-liquid separation of wastewater.
It effectively improves the pretreatment or deep treatment effect of the sewage treatment process, realizes efficient and high-load solid-liquid separation, and can handle small and large suspended wastewater, and the maximum SS mass can reach 10,000 mg/L.
Smart Images
Figure CN222524285U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sewage treatment equipment, in particular to an integrated coagulation and air-floatation solid-liquid separator. Background Art
[0002] Wastewater treatment is becoming more and more important in today's society. Since current wastewater includes new energy lithium battery wastewater, chip packaging and testing wastewater, permanent magnet processing wastewater, electroplating wastewater, silicon industry wastewater, papermaking wastewater, machining wastewater, petroleum refining wastewater and other wastewaters, the treatment process has also become complicated. Among them, the wastewaters of these industries contain inorganic or organic particles and suspended matter. In the pretreatment process, coagulation sedimentation solid-liquid separation or micron bubble flotation separation is usually used. However, a single coagulation sedimentation can only deposit heavier flocs, and there will still be light flocs that are not easy to settle and float up and be discharged with clear water. Single micron bubble separation is also one of the more popular technical means. Therefore, there is an urgent need for an integrated coagulation flotation solid-liquid separator to improve the pretreatment or deep treatment effect of the sewage treatment process and achieve the purpose of high efficiency and high load. Utility Model Content
[0003] The utility model aims to provide an integrated coagulation and flotation solid-liquid separator, which integrates coagulation sedimentation and micron bubble flotation separation to effectively separate solid and liquid from wastewater with a large amount of micro suspended solids, thereby solving the problem of poor pre-treatment or deep treatment effects in sewage treatment processes.
[0004] The purpose of the utility model can be achieved through the following technical solutions:
[0005] An integrated coagulation and flotation solid-liquid separator comprises a tank body, wherein a coagulation tank, a flocculation tank, a flow tank, a contact mixing tank, a separation tank and a clean water tank are sequentially arranged inside the tank body, wherein the coagulation tank and the flocculation tank are arranged in parallel, the flow tank and the contact mixing tank are arranged in upper and lower distributions, a micron bubble generating device is arranged on the side of the tank body close to the flocculation tank, the micron bubble generating device is connected to a plurality of dissolved air releasers, and the plurality of dissolved air releasers are arranged at equal intervals in the contact mixing tank, a porous water distribution plate is arranged between the flow tank and the contact mixing tank, a plurality of groups of porous inclined tube fillers are arranged inside the separation tank, a clean water outlet distribution pipe is arranged below the porous inclined tube filler, the other end of the clean water outlet distribution pipe is connected to the clean water tank, a liquid level regulating component connected to the outside is arranged in the middle of the clean water tank, a clean water reflux pipe is arranged in the clean water tank, the bottom of the clean water reflux pipe passes through the clean water tank and is connected to a clean water reflux pump, and the discharge outlet of the clean water reflux pump is connected to the micron bubble generating device through a connecting pipe.
[0006] As a further solution of the utility model: the coagulation tank and the flocculation tank are arranged in parallel, and a partition is arranged in the middle of the coagulation tank and the flocculation tank, and an overflow port is arranged on the top of the partition to connect the coagulation tank and the flocculation tank.
[0007] As a further solution of the utility model: a baffle plate 1 is arranged between the separation tank and the contact mixing tank, and an overflow surface inclined toward the separation tank is arranged on the top of the baffle plate 1; a baffle plate 2 is arranged between the separation tank and the clean water tank, and a guide surface inclined toward the separation tank is arranged on the top of the baffle plate 2.
[0008] As a further solution of the utility model: the bottom of the dissolved air releaser is attached to the porous water distribution plate.
[0009] As a further solution of the utility model: a coagulation stirrer is arranged on the top of the coagulation tank, and a flocculation stirrer is arranged on the top of the flocculation tank.
[0010] As a further solution of the utility model: a scraping system is arranged at the top of the separation tank near the clean water tank, a plurality of horizontally distributed spoilers are arranged below the scraping system, a slag collecting tank is arranged at the top of the clean water tank near the scraping system, and a screw conveyor is arranged at the bottom of the slag collecting tank.
[0011] As a further solution of the utility model: the liquid level regulating assembly includes a discharge pipe connected to the outside, and a regulating cylinder is movably arranged on the top of the discharge pipe.
[0012] As a further solution of the utility model: a plurality of groups of porous oblique tube fillers are arranged obliquely, and the porous oblique tube fillers adopt a honeycomb structure.
[0013] As a further solution of the utility model: the micron bubble generating device is provided with a pressure relief solenoid valve and an exhaust solenoid valve.
[0014] Beneficial effects of the utility model:
[0015] 1. The utility model integrates coagulation sedimentation and micron bubble flotation separation to effectively separate solid and liquid from wastewater with large micro suspended content, improve the pre-treatment or deep treatment effect of the sewage treatment process, and achieve the purpose of high efficiency and high load.
[0016] 2. The utility model uses a porous water distribution plate to disperse and expand the contact surface between micron dissolved air water and coagulation and flocculation gel original liquid, and evenly distributes water. The colloid after coagulation and flocculation will be evenly mixed and contacted with the micron dissolved air water. The micron bubble dissolved air water can be effectively utilized, so the raw water SS quality can reach up to 10000mg / L.
[0017] 3. In this utility model, the load is up to 10m 3 / ㎡, the flow state of the separation tank is the key, and the porous inclined tube filler must be set to separate the upper and lower solids and liquids. During the process, the porous inclined tube filler will evenly distribute the flow state, so there will be no local flow rate that is too fast. Therefore, the core point of the separation tank lies in the porous inclined tube filler, which can effectively keep the flow state in the separation tank stable and eliminate the effect of excessive local flow rate affecting the separation effect.
[0018] 4. The utility model provides a spoiler to offset or reduce the disturbance of the scraping process when the mechanical drive disturbs the flow state of the liquid in the separation tank.
[0019] 5. The utility model relies on the screw conveying device to forcibly convey the scum and mud out, which can effectively solve the problem of scum and mud agglomeration and scum adhesion and deposition in the slag collecting tank that cannot flow out.
[0020] 6. The micron bubble generating device of the utility model is provided with two solenoid valves, one of which is used for pressure relief. When the system is shut down normally or abnormally, the exhaust solenoid valve will open to release the pressure in the dissolved air tank, so that there is no pressure to impact the water in the pool body. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The utility model is further described below in conjunction with the accompanying drawings.
[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0023] Figure 2 It is a schematic diagram of the internal structure of the coagulation tank and the flocculation tank in the utility model;
[0024] Figure 3 It is a schematic diagram of the transverse cross-sectional structure of the utility model;
[0025] Figure 4 This is a schematic diagram of the structure of the clean water return pump of the utility model;
[0026] Figure 5 This is a schematic diagram of the structure of the liquid level regulating component of the utility model;
[0027] Figure 6 It is a schematic diagram of the flow direction of liquid in the porous inclined tube packing of the utility model.
[0028] In the figure: 400, tank body; 401, micron bubble generating device; 402, coagulation tank; 403, flocculation tank; 404, coagulation mixer; 405, flocculation mixer; 406, flow channel; 407, porous water distribution plate; 408, dissolved air releaser; 409, contact mixing tank; 410, separation tank; 411, porous inclined tube filler; 412, clean water outlet water distribution pipe; 413, spoiler; 414, scraping system; 415, slag collecting tank; 416, clean water tank; 417, liquid level adjustment component; 418, screw conveyor; 419, clean water return pump. DETAILED DESCRIPTION
[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0030] like Figure 1-Figure 5 As shown, an integrated coagulation and flotation solid-liquid separator comprises a formed tank body 400, wherein a coagulation tank 402, a flocculation tank 403, a flow tank 406, a contact mixing tank 409, a separation tank 410 and a clean water tank 416 are sequentially arranged inside the tank body 400, wherein the coagulation tank 402 and the flocculation tank 403 are arranged in parallel front and back (with Figure 1 The coagulation tank 402 is located at the front end, and the flocculation tank 403 is located at the rear end. A partition is provided in the middle of the coagulation tank 402 and the flocculation tank 403 to separate the coagulation tank 402 and the flocculation tank 403. An overflow port is provided on the top of the partition to connect the coagulation tank 402 and the flocculation tank 403.
[0031] Further flow channel 406 and contact mixing channel 409 are as follows Figure 3 As shown, the upper and lower distribution is arranged, the flow channel 406 is located at the bottom and is connected to the bottom of the flocculation tank 403, the contact mixing tank 409 is located at the top, and the separation tank 410 is located at the end of the contact mixing tank 409 away from the coagulation tank 402, and a baffle plate 1 is arranged between the separation tank 410 and the contact mixing tank 409, and an overflow surface inclined toward the separation tank 410 is arranged on the top of the baffle plate 1. Further, the clean water tank 416 is located on the other side of the tank body 400 and is connected to the separation tank 410. A baffle plate 2 is arranged between the separation tank 410 and the clean water tank 416, and a guide surface inclined toward the separation tank 410 is arranged on the top of the baffle plate 2.
[0032] Further Figure 1-Figure 3 As shown, a micron bubble generating device 401 is provided on the outer side surface of the tank body 400 close to the flocculation tank 403, and the micron bubble generating device 401 is connected to a plurality of dissolved air releasers 408 through a connecting pipe. The plurality of dissolved air releasers 408 are arranged at equal intervals in the contact mixing tank 409, and a porous water distribution plate 407 is provided between the flow channel 406 and the contact mixing tank 409, and the flow channel 406 and the contact mixing tank 409 are separated by the porous water distribution plate 407, and further the bottom of the dissolved air releaser 408 is in contact with the porous water distribution plate 407.
[0033] Furthermore, a coagulation mixer 404 is arranged on the top of the coagulation tank 402, and the coagulation mixer 404 includes a connecting plate 1 arranged on the top of the coagulation tank 402, and a stirring motor 1 is installed on the connecting plate 1, and the output shaft of the stirring motor 1 is connected to a stirring blade 1, and the stirring blade 1 extends into the coagulation tank 402. Similarly, a flocculation mixer 405 is arranged on the top of the flocculation tank 403, and the flocculation mixer 405 includes a connecting plate 2 arranged on the top of the flocculation tank 403, and a stirring motor 2 is installed on the connecting plate 2, and the output shaft of the stirring motor 2 is connected to a stirring blade 2, and the stirring blade 2 extends into the flocculation tank 403 for stirring.
[0034] Furthermore, a plurality of connecting frames are arranged inside the separation tank 410, and a plurality of groups of porous oblique tube fillers 411 are arranged on the plurality of connecting frames. A clean water outlet distribution pipe 412 is arranged in the separation tank 410 below the porous oblique tube filler 411. One end of the clean water outlet distribution pipe 412 extends to the front end of the separation tank 410 (close to the end of the contact mixing tank 409), and the other end is connected to the clean water tank 416. A plurality of water inlet holes are opened on the bottom surface of one end of the clean water outlet distribution pipe 412 located below the porous oblique tube filler 411, so as to facilitate the introduction of clean water into the clean water tank 416.
[0035] Furthermore, a scraping system 414 is provided at the top of the separation tank 410 near the clean water tank 416, and the scraping system 414 scrapes the floating mud floating on the surface, and the separation tank 410 is provided with a plurality of horizontally distributed spoilers 413 below the scraping system 414, and the spoilers 413 are used to offset or reduce the water flow disturbance during the scraping process, wherein a slag collecting tank 415 is provided at the top of the clean water tank 416 near the scraping system 414, and a screw conveyor 418 is provided at the bottom of the slag collecting tank 415 to convey the floating mud in the slag collecting tank 415 out.
[0036] Furthermore, a liquid level regulating component 417 connected to the outside is provided in the middle of the clean water tank 416, and a clean water return pipe is also provided in the clean water tank 416. The bottom of the clean water return pipe passes through the clean water tank 416 and is connected to a clean water return pump 419. The discharge port of the clean water return pump 419 is connected to the micron bubble generating device 401 through a connecting pipe, so as to return the clean water to the micron bubble generating device 401 for reuse.
[0037] Further Figure 3 As shown, a liquid inlet is provided at the bottom of the coagulation tank 402, and sewage enters the coagulation tank 402 through the liquid inlet, and a vent port 1 is provided on the side of the bottom of the coagulation tank 402, and a vent port 2 is provided on the side of the flow channel 406. The inside of the coagulation tank 402 and the flow channel 406 are emptied and cleaned through the vent port 1 and the vent port 2 when the machine is shut down.
[0038] Mud bins are symmetrically arranged on both sides of the bottom of the separation tank 410 to collect heavy particles, and both mud bins are provided with mud discharge ports for discharging the heavy particles.
[0039] Furthermore, the above-mentioned scraping system 414 is a prior art, which includes a driving motor and a driving wheel. A driving chain is arranged between the two sets of driving wheels, and a scraper is arranged between the two driving chains. The scraper extends below the liquid surface and is driven by the driving motor to reciprocate the scraper to scrape the scum and mud into the slag collecting tank 415.
[0040] The liquid level regulating component 417 further includes a discharge pipe connected to the outside, and an adjusting cylinder that can be adjusted up and down is movably arranged on the top of the discharge pipe. The position of the adjusting cylinder is adjusted according to needs before processing to control the height of the clean water level inside the clean water tank 416.
[0041] Furthermore, the plurality of groups of porous oblique tube fillers 411 are arranged obliquely, and the top surface height is lower than the top overflow surface of the baffle plate, wherein the porous oblique tube filler 411 adopts a honeycomb structure, and the diameter of each honeycomb hole is greater than 50-80 mm, and the internal oblique holes of the porous oblique tube filler 411 have an inclination angle of 15 degrees with the vertical plane, and the lower part of the oblique tube of the porous oblique tube filler 411 faces the left side. Figure 3 As shown, the number of porous inclined tube fillers 411 is enough to fill the entire cross-section of the separation tank 410 when viewed from top. Its purpose is to eliminate the diagonal short-circuit effect in the process from water inlet to water outlet, increase the path for the clean water to flow downward and enhance the uniform distribution effect, thereby achieving a uniform distribution and drainage effect for the clean water.
[0042] Furthermore, the micron bubble generating device 401 is provided with two solenoid valves, one of which is used for pressure relief. When the system shuts down normally or abnormally, the exhaust solenoid valve will open to release the pressure in the dissolved air tank, so that no pressure will impact the water in the pool body.
[0043] When using this solution, adjust the position of the regulating cylinder in the liquid level regulating component 417, the sewage and wastewater raw water enters the coagulation tank 402 through the liquid inlet, the coagulation agent is added to the coagulation tank 402, the coagulation mixer 404 is started to stir and coagulate, the raw water after coagulation overflows into the flocculation tank 403 through the overflow port, the flocculation agent is added, the flocculation mixer 405 is started to stir and flocculate, and the flocculated colloidal stock solution flows into the flow channel 406 from the bottom of the flocculation tank 403 and flows upward through the porous water distribution plate 407 It flows into the contact mixing tank 409 (the core point of the porous water distribution plate 407 is to evenly disperse the colloid stock solution after coagulation and flocculation into the contact mixing tank 409), and then mixes with the dissolved air water generated by the micron bubble generating device 401 and flows upward, flows to the top and over the barrier plate 2 to flow into the separation tank 410. The colloid lifted by the micron bubble mixing floats on the high liquid level of the separation tank 410, and is separated from the upper and lower solids and liquids by the porous inclined tube filler 411. The surface load of the separation tank 410 is set to 5-10m 3 / ㎡, the clean water flows downward through the porous inclined tube filler 411, and then is drained to the clean water tank 416 through the clean water outlet water distribution pipe 412, wherein about 2 / 3 of the clean water in the clean water tank 416 overflows through the liquid level adjustment component 417 for external discharge, and about 1 / 3 of the clean water returns to the micron bubble generating device 401 through the clean water reflux pump 419. After a period of 3 to 5 minutes of flotation separation of scum and sludge, after the scum and sludge float on the liquid surface of the separation tank 410 to reach a set thickness, the scraping system 414 scrapes them for slag treatment. The scraping treatment is to mechanically drag a scraper that sinks 5 to 10 cm below the liquid surface to scrape the scum and sludge into the slag collecting tank 415. The disturbance of the scraping process relies on the spoiler 413 to slow down the flow impact, and the screw conveyor 418 at the bottom of the slag collecting tank 415 forces the scum and sludge to be transported out, and the screw conveyor 418 runs synchronously with the scraping system 414.
[0044] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.
Claims
1. Integrated coagulation and flotation solid-liquid separator, characterized in that: The invention comprises a tank body (400), wherein a coagulation tank (402), a flocculation tank (403), a flow tank (406), a contact mixing tank (409), a separation tank (410) and a clean water tank (416) are sequentially arranged inside the tank body (400), wherein the coagulation tank (402) and the flocculation tank (403) are arranged in parallel, the flow tank (406) and the contact mixing tank (409) are arranged in an upper and lower distribution, a micron bubble generating device (401) is arranged on one side of the tank body (400) close to the flocculation tank (403), the micron bubble generating device (401) is connected to a plurality of dissolved air releasers (408), the plurality of dissolved air releasers (408) are arranged in the contact mixing tank (409) at equal intervals, and the flow tank (406) is arranged in a lower and upper distribution. A porous water distribution plate (407) is arranged between the cleaning tank (406) and the contact mixing tank (409), a plurality of groups of porous oblique tube fillers (411) are arranged inside the separation tank (410), a clean water outlet distribution pipe (412) is arranged below the porous oblique tube fillers (411), the other end of the clean water outlet distribution pipe (412) is connected to the clean water tank (416), a liquid level adjustment component (417) connected to the outside is arranged in the middle of the clean water tank (416), a clean water return pipe is arranged in the clean water tank (416), the bottom of the clean water return pipe passes through the clean water tank (416) and is connected to a clean water return pump (419), and the discharge port of the clean water return pump (419) is connected to the micron bubble generating device (401) through a connecting pipe.
2. The integrated coagulation and flotation solid-liquid separator according to claim 1, characterized in that: A partition is provided in the middle of the coagulation tank (402) and the flocculation tank (403), and an overflow port is provided on the top of the partition, which connects the coagulation tank (402) and the flocculation tank (403).
3. The integrated coagulation and flotation solid-liquid separator according to claim 1, characterized in that: A baffle plate 1 is provided between the separation tank (410) and the contact mixing tank (409), and an overflow surface inclined toward the separation tank (410) is provided on the top of the baffle plate 1. A baffle plate 2 is provided between the separation tank (410) and the clean water tank (416), and a guide surface inclined toward the separation tank (410) is provided on the top of the baffle plate 2.
4. The integrated coagulation and flotation solid-liquid separator according to claim 1, characterized in that: The bottom of the dissolved gas releaser (408) is in contact with the porous water distribution plate (407).
5. The integrated coagulation and flotation solid-liquid separator according to claim 2, characterized in that: A coagulation stirrer (404) is arranged on the top of the coagulation tank (402), and a flocculation stirrer (405) is arranged on the top of the flocculation tank (403).
6. The integrated coagulation and flotation solid-liquid separator according to claim 1, characterized in that: A scraping system (414) is provided at the top of the separation trough (410) near the clean water trough (416), a plurality of horizontally distributed spoilers (413) are provided below the scraping system (414), a slag collecting trough (415) is provided at the top of the clean water trough (416) near the scraping system (414), and a screw conveyor (418) is provided at the bottom of the slag collecting trough (415).
7. The integrated coagulation and flotation solid-liquid separator according to claim 1, characterized in that: The liquid level adjustment component (417) comprises a discharge pipe connected to the outside, and an adjustment cylinder is movably arranged on the top of the discharge pipe.
8. The integrated coagulation and flotation solid-liquid separator according to claim 1, characterized in that: The multiple groups of porous oblique tube fillers (411) are arranged obliquely, and the porous oblique tube fillers (411) adopt a honeycomb structure.
9. The integrated coagulation and flotation solid-liquid separator according to claim 1, characterized in that: The micron bubble generating device (401) is provided with a pressure relief solenoid valve and an exhaust solenoid valve.