CN218755326U - High concentration fluorine-containing wastewater unit coupling deep purification system - Google Patents
High concentration fluorine-containing wastewater unit coupling deep purification system Download PDFInfo
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- CN218755326U CN218755326U CN202223063889.7U CN202223063889U CN218755326U CN 218755326 U CN218755326 U CN 218755326U CN 202223063889 U CN202223063889 U CN 202223063889U CN 218755326 U CN218755326 U CN 218755326U
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Abstract
The utility model discloses a high concentration fluoride waste water unit coupling deep purification system and technology, the system includes waste water collecting tank, first multistage stirring reaction tank, the high-efficient clarification solid-liquid separation equipment of one-level, the multistage stirring reaction tank of second, the high-efficient clarification solid-liquid separation equipment of second grade, the automatic feeder apparatus of dosing of medicament ration, integration stirring reaction air supporting device, monitoring retrieval water tank and sludge collecting tank, the export of waste water collecting tank connects gradually first multistage stirring reaction tank and the high-efficient clarification solid-liquid separation equipment of one-level, and the top clarified liquid export of the high-efficient clarification solid-liquid separation equipment of one-level connects gradually second multistage stirring reaction tank and the high-efficient clarification solid-liquid separation equipment of second grade, and the top clarified liquid exit linkage integration stirring reaction air supporting device of the high-efficient clarification solid-liquid separation equipment of second grade, the liquid exit linkage monitoring retrieval water tank of air supporting device. The utility model provides high treatment effeciency has shortened reaction time, has still reduced the expense of high fluorine-containing waste water deep purification processing.
Description
Technical Field
The utility model belongs to the technical field of the water purification treatment of the physical chemistry method, concretely relates to high concentration fluorine-containing waste water unit coupling degree of depth clean system.
Background
Toxic fluoride pollution is receiving more and more extensive social attention. If the water containing fluorine in an amount higher than 1.0mg/l of the water quality standard of drinking water is drunk for a long time, maculopathy, renal dysfunction and the like can be caused if the water is drunk for a long time, and bone damage can be caused if the water is drunk for a long time. The discharge of industrial fluorine-containing wastewater is one of important sources of fluorine pollution of water, and a large amount of fluorine-containing wastewater is discharged in industries such as steel, electrolytic aluminum, phosphate fertilizer, cement, brick and tile, ceramics, glass, coal chemical industry and the like. With the development of modern industry and coal chemical industry, fluorine and its compounds are produced, synthesized and applied more and more widely, which form a threat to water environment pollution. When the drinking water defluorination is vigorously popularized, the prevention and treatment of industrial fluorine pollution is actively promoted, and the environmental and health problems which are generally concerned in water environment management are solved.
The concentration of the fluoride discharged by the national industrial wastewater discharge standard is less than or equal to 10mg/l at present, and the concentration of the fluoride discharged by the discharged water body is required to be less than or equal to 1.5mg/l in some regions according to the actual situation of local resource environment endowment. The prior technical method for treating fluorine-containing wastewater generally adopts several methods such as a chemical precipitation method, a coagulation method, an adsorption method, an ion exchange method, a membrane method, an electrochemical method and the like, and each method has different application conditions, treatment cost and treatment effect. Summary literature investigation and practical engineering application, and working cognition of lean refinement of the company and system experiments of treating fluorine-containing wastewater in coal chemical industry are combined, so that the chemical precipitation method is suitable for the fluorine-containing wastewater with large water quantity and high concentration, the removal rate is higher, the cost is lower, the treatment depth is limited, and the fluorine-containing concentration of treated effluent can only be reduced to 15mg/l-10mg/l. The common drinking water defluorination adopts an adsorption method, an ion exchange method or a membrane method, the methods have high operation cost and complex operation management, can generate regenerated liquid for repeated treatment, are generally suitable for the treatment of low-concentration fluorine-containing water and are not suitable for the treatment of high-concentration large-water-volume fluorine-containing industrial wastewater.
At present, most domestic fluorine-related enterprises do not have perfect treatment facilities, the fluorine content of the discharged wastewater is far higher than the national emission standard, few enterprises with wastewater fluorine removal facilities adopt a single chemical precipitation method, the fluorine removal efficiency of the system is not high, the fluorine concentration of treated effluent is as high as 20mg/L-10mg/L, and the requirements of national and local emission standards are far not met.
In conclusion, the development of a technology for converting industrial wastewater with high fluorine content into high-water-content, low-cost and advanced treatment has become a problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The utility model provides a high concentration fluorine-containing wastewater unit coupling deep purification system based on above-mentioned high concentration fluorine-containing industrial waste water source fluorine-containing wastewater purification treatment technical demand to its quality of water characteristics and advanced treatment's requirement.
The utility model discloses the technical scheme who takes does: the utility model provides a high concentration fluorine-containing waste water unit coupling deep purification system, it includes waste water collecting tank, first multistage stirring reaction tank, the high-efficient clarification solid-liquid separation equipment of one-level, the multistage stirring reaction tank of second, the high-efficient clarification solid-liquid separation equipment of second grade, the automatic feeder apparatus of dosing of medicament ration, integration stirring reaction air supporting device, monitoring retrieval and utilization pond and sludge collecting pit, the import of waste water collecting tank inserts high fluorine-containing waste water, the first multistage stirring reaction tank of exit linkage, the exit linkage one-level high-efficient clarification solid-liquid separation equipment of first multistage stirring reaction tank, the top clarified liquid exit linkage second multistage stirring reaction tank of one-level high-efficient clarification solid-liquid separation equipment, and the mud mouth of bottom oblique cone fill falls into two tunnel, wherein is connected to first multistage stirring reaction tank as the mud backward flow pipeline all the way, and another road is connected to the sludge collecting pit, the exit linkage second stage high-efficient clarification solid-liquid separation equipment of exit linkage integration stirring reaction air supporting device, the sludge mouth of top clarified liquid exit linkage integration stirring reaction air supporting device of second grade high-liquid separation equipment of second grade falls into two tunnel as another tunnel stirring reaction water sludge exit linkage and mud stirring reaction tank, wherein is connected to the integrated sludge stirring reaction tank and monitoring retrieval and sludge exit linkage.
Furthermore, the sewage inlet of the waste water collecting tank is provided with an accident collecting tank, the inlet of the accident collecting tank is used for connecting high-fluorine-containing waste water during accidents, and the outlet of the accident collecting tank is connected to the sewage regulating tank.
Furthermore, the first multistage stirring reaction tank and the second multistage stirring reaction tank are respectively provided with three reaction tanks, each reaction tank is internally provided with a stirrer, and the stirrers adopt variable frequency and constant speed to realize that each stage of rotating speed meets the test requirements, strengthen the coagulation flocculation effect and form heavy mass large-ball flowers.
Furthermore, the first multistage stirring reaction tank and the second multistage stirring reaction tank are respectively and automatically added with medicaments into each grid reaction tank through a medicament quantitative graded automatic adding device, and the multistage stirring reaction tanks are interlocked with the fluorine-containing wastewater entering and medicament quantitative graded automatic adding device, so that the automatic control mode operation is realized.
Furthermore, the bottom oblique cone concentration hopper of the first-stage high-efficiency clarification solid-liquid separation device and the bottom oblique cone concentration hopper of the second-stage high-efficiency clarification solid-liquid separation device are provided with sludge discharge ports, and return pipelines connected with the sludge discharge ports are respectively connected to the second grid reaction tanks of the first multi-stage stirring reaction tank and the second multi-stage stirring reaction tank.
Furthermore, a mud scraper is arranged inside the first-stage high-efficiency clarification solid-liquid separation device and the second-stage high-efficiency clarification solid-liquid separation device and used for scraping sludge at the bottom of the clarification solid-liquid separation device into an inclined cone sludge concentration hopper.
Furthermore, a flow guide reflection device is arranged inside the first-stage high-efficiency clarification solid-liquid separation device and the second-stage high-efficiency clarification solid-liquid separation device and is used for diffusing and pushing flocculated heavy large-cluster common flowers to the periphery of the clarification solid-liquid separation devices.
Further, integration stirring reaction air supporting device scrapes the sediment machine including reaction stirred tank, air supporting device release storehouse, efflux gas-liquid mixture dissolved air jar and air floatation, and the entry linkage high-efficient clarification solid-liquid separation equipment's of second grade top clarified liquid export of reaction stirred tank, and the sediment machine is scraped in the air floatation and the come-up mud of air supporting device is scraped its row's cinder notch and is discharged to the mud collecting pit again, is equipped with the collector pipe in the middle part of the air supporting device, collects the clear liquid through the collector pipe and arranges to monitoring reuse water pool.
Furthermore, the monitoring reuse water tank is provided with an overrunning pipe for backflow, the overrunning pipe is connected to a reaction stirring tank of the integrated stirring reaction air floatation device, and a pump and a valve are arranged on the overrunning pipe.
Further, the sludge collecting tank is provided with a sludge dewatering device; the first-stage high-efficiency clarification solid-liquid separation device, the second-stage high-efficiency clarification solid-liquid separation device, each multi-stage stirring reaction tank, the integrated stirring reaction air flotation device and the monitoring reuse water tank are all provided with online monitoring instruments, the fluorine concentration and flow rate are accurately controlled to be matched with the dosage of the medicament, and the discharged fluorine of the monitoring reuse water tank does not exceed the standard.
The utility model has the advantages that:
the utility model realizes the treatment of the high fluorine-containing wastewater to produce fluoride less than or equal to 1mg/L only by a coagulation reaction-clarification separation physical and chemical method. The fluoride in the effluent of the fluorine-containing wastewater treatment can be less than or equal to 1mg/L after the filtration and adsorption of the alumina/resin filter material. The technology saves the cost generated by regular filter material regeneration and replacement of an alumina/resin filter material filtering and adsorbing method, simultaneously avoids the treatment of filter material regeneration waste liquid, and greatly reduces the cost of deep purification treatment of high fluorine-containing wastewater.
The utility model discloses set up two-stage coagulation reaction-solid-liquid clarification separation composite set, first, second grade stirring reaction tank equip tertiary (fast, well, slow) stirring respectively, and the stirring rotational speed is according to experimental reaction condition constant speed, and the stirring process adopts frequency conversion constant speed stirring and the hierarchical automation of medicament ration to throw, makes intake and medicament obtain the intensive mixing contact, improves reaction rate, shortens reaction time, and the reinforcing is thoughtlessly congealed-flocculation reaction effect, realizes getting rid of waste water height fluorine. The high-efficiency clarification solid-liquid separation device adopts a two-stage flow guide reflection water distribution device, fluorine-containing wastewater automatically flows to an inlet of the clarification solid-liquid separation device through the coagulation reaction device and enters the flow guide reflection water distribution device, and the coagulant liquid is pushed and distributed uniformly in the tank/pool, so that the problems of uneven water distribution, high flow guide flow velocity, serious turbulence and the like of the traditional clarification tank/pool are solved, and the clarification separation effect is obviously improved.
The utility model discloses an air supporting device dissolves the gas pitcher with the tradition and improves and dissolve the gas pitcher for efflux gas-liquid mixture, changes traditional gas-liquid and is difficult to send the gas-liquid than low than regulation and control, and the microbubble buoyancy lift capacity poor problem that leads to the treatment effeciency low. The jet-flow gas-liquid mixing dissolved air tank is adopted to enhance the liquid-gas mixing, and a special releaser is selected to improve the release efficiency and the anti-blocking function, so that the system realizes the purpose of efficiently removing fluorine.
The utility model discloses a concentrated heavy matter mud of fighting of clarification device bottom oblique cone returns to stirring reaction unit, utilizes unreacted medicament and fluoride-containing waste water mixing reaction in heavy matter mud and the mud, improves the complex and the flocculation effect of mud and mixed liquid to and the combined action of several kinds of reactions such as medicament hydrolysate to the ion exchange of fluorine and physical adsorption, form heavy matter big group of all flowers, improve solid-liquid quickly separating and subside, improved clarification efficiency greatly.
The total removal rate of the utility model is improved by 70 percent to 80 percent compared with the prior art, and the fluorine content of the effluent is less than or equal to 1.0mg/l. Under the condition of relative advanced treatment, the efficiency of the system is improved, and the investment of facility construction and treatment cost are reduced.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic diagram of the system structure of the present invention.
Labeled as: 1-a wastewater collection tank, 2-an accident collection tank, 3-a first multi-stage stirring reaction tank, 4-a first agent quantitative grading automatic feeding device, 5-a first-stage efficient clarification solid-liquid separation device, 6-a second multi-stage stirring reaction tank, 7-a second agent quantitative grading automatic feeding device, 8-a second-stage efficient clarification solid-liquid separation device, 9-an integrated stirring reaction air flotation device, 10-an air flotation slag scraping machine, 11-a monitoring reuse water tank and 12-a sludge collection tank.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a high concentration fluorine-containing wastewater unit coupling deep purification system, including waste water collecting tank, first multistage stirring reaction tank, the high-efficient clarification solid-liquid separation device of one-level, the multistage stirring reaction tank of second, the high-efficient clarification solid-liquid separation device of second grade, the automatic feeder apparatus of agent ration grading, integrated stirring reaction air supporting device, monitoring retrieval and utilization pond and sludge collecting tank, the import of waste water collecting tank inserts high fluorine-containing wastewater, the first multistage stirring reaction tank of exit linkage, the exit linkage one-level high-efficient clarification solid-liquid separation device of first multistage stirring reaction tank, the top clarified liquid exit linkage second multistage stirring reaction tank of one-level high-efficient clarification solid-liquid separation device, bottom sludge mouth divide into two the tunnel, wherein be connected to first multistage stirring reaction tank as the sludge return line all the way, another way is connected to the sludge collecting tank, the exit linkage second high-efficient clarification solid-liquid separation device of exit linkage of second stage high-efficient clarification solid-liquid separation device, bottom sludge mouth divides into two the tunnel, wherein is connected to the second multistage stirring reaction air supporting device as the sludge return line all the way, the integrated stirring reaction water outlet of the sludge collection tank.
In this embodiment, the sewage import department of waste water collecting tank still is provided with the accident collecting tank, the import of accident collecting tank inserts high fluorine-containing waste water when being used for the accident, exit linkage to sewage equalizing basin.
In this embodiment, the first multistage stirring reaction tank and the second multistage stirring reaction tank are respectively provided with three reaction tanks, and each reaction tank is internally provided with a stirrer, and the stirrers adopt variable frequency and constant speed to realize that each stage of rotating speed meets the test requirements, strengthen the coagulation flocculation effect, form heavy mass large-ball flowers and improve the sedimentation rate; meanwhile, the first multistage stirring reaction tank and the second multistage stirring reaction tank are respectively and independently added with medicaments into each grid reaction tank through a medicament quantitative graded automatic adding device, and the multistage stirring reaction tanks are interlocked with the fluorine-containing wastewater and the medicament quantitative graded automatic adding device, so that the automatic control mode operation is realized, the precision is improved, and the operation stability is improved.
In the embodiment, in order to solve the problems of low concentration, fineness, light weight and difficult sedimentation of the fluorine-containing wastewater suspended matter, the lower end of the inclined cone sludge concentration hopper at the bottom of the clarification solid-liquid separation device is additionally provided with the sludge discharge port, and sludge of an inclined cone concentration hopper polymer flows back to the second grid stirring reaction tank, so that the problems of pump disintegration and pump failure of the sludge polymer of the inclined cone concentration hopper are solved. The pulse air-stripping sludge of special equipment is conveyed to a second grid stirring reaction tank, and the returned sludge is utilized to form better coagulated flocs under the reaction of the stirring rotating speed of the second grid, so that unreacted reagents in the sludge are fully utilized, and the integral effect of solid-liquid separation and sedimentation is improved.
In this embodiment, a mud scraper and a diversion reflection device are arranged inside the first-stage high-efficiency clarification solid-liquid separation device and the second-stage high-efficiency clarification solid-liquid separation device, the mud scraper is used for scraping sludge at the bottom of the clarification solid-liquid separation device into an inclined cone sludge concentration hopper, the diversion reflection device is used for diffusing and pushing flocculated heavy large-clump Vasella rosea to the periphery of the clarification solid-liquid separation device, and liquid and solid are rapidly settled without turbulence to realize liquid-solid separation.
In this embodiment, integration stirring reaction air supporting device includes that reaction stirred tank, air supporting device release storehouse, efflux gas-liquid mixture dissolve the gas pitcher and the sediment machine is scraped to the air supporting, and the entry linkage second grade high efficiency clarification solid-liquid separation equipment's of reaction stirred tank top clarified liquid export, and the sediment machine is scraped in the air supporting scrapes the come-up mud of air supporting device and scrapes its scum groove and arrange to the mud collecting pit again, is equipped with the collector pipe in the middle part of the air supporting device, collects the clear liquid through the collector pipe and arranges to the clean water basin. The dissolved air tank is improved into a jet flow gas-liquid mixing dissolved air tank, the problem that the traditional gas-liquid ratio regulation is difficult to cause low gas-liquid ratio, so that the micro-bubble buoyancy force is poor to cause low treatment efficiency is solved. The mixed liquid after stirring, coagulating and flocculating enters air floatation solid-liquid separation, and the fluorine-containing concentration of the wastewater can be reduced to be less than or equal to 1mg/l. The jet-flow gas-liquid mixing dissolved air tank is adopted to enhance the liquid-gas mixing, and a special releaser is selected to improve the release efficiency and the anti-blocking function, so that the system realizes the purpose of efficiently removing fluorine.
In this embodiment, the sludge collecting tank is provided with a sludge dewatering device; the first-stage high-efficiency clarification solid-liquid separation device, the second-stage high-efficiency clarification solid-liquid separation device, each multi-stage stirring reaction tank, the integrated stirring reaction air floatation device and the monitoring reuse water tank are all provided with online monitoring instruments.
The specific purification process of the system comprises the following steps:
the high/concentration fluorine-containing wastewater is pumped/automatically flows to a wastewater collection tank 1 to adjust the water quantity and the water quality, and if an accident tank 2 is arranged, the accident wastewater is metered by a pump and is lifted to the wastewater collection tank 1 to be treated together. After fluorine-containing wastewater in the wastewater collection tank 1 is conveyed to a first multistage stirring reaction tank 3 by a lifting pump, a stirring facility is synchronously started, an automatic dosing device is started to feed a fluorine removal medicament for coagulation and flocculation, heavy mass flowers are formed under the conditions that the fluorine-containing wastewater and the medicament in the first multistage stirring reaction tank 3 are subjected to variable-frequency constant-speed fast, medium and slow stirring and react to generate required precipitates of fluorides, then the heavy mass flowers automatically flow into a first-stage clarification solid-liquid separation device 5, the flocculated heavy mass flowers are subjected to diffusion and plug flow to the periphery of the first-stage clarification solid-liquid separation device 5 through diversion reflection in the first-stage clarification solid-liquid separation device 5, the flocculated heavy mass flowers are subjected to turbulent flow-free fast sedimentation liquid-solid separation, settled sludge at the bottom of the clarification device is scraped into an inclined cone sludge concentration bucket by a sludge scraper for further concentration, a part of the sludge in the concentration bucket is recycled, the residual sludge is discharged to a sludge collection tank 12, and the fluoride removal rate is not less than 90%. Supernatant of the first-stage clarification solid-liquid separation device 5 enters a second multi-stage stirring reaction tank 6, a stirring facility is synchronously started, an automatic dosing device is started, a fluorine removal medicament is added for coagulation and flocculation, heavy mass common flowers are formed again and automatically flow into a second-stage clarification solid-liquid separation device 8 under the condition that fluorine wastewater and medicaments in the second multi-stage stirring reaction tank are subjected to variable-frequency constant-speed fast, medium and slow stirring and react to generate fluoride required to be settled, then the flocculated heavy mass common flowers are diffused and pushed to flow around the second-stage clarification solid-liquid separation device 8 through diversion reflection, the flocculated heavy mass common flowers are subjected to fast settling liquid-solid separation without turbulence, settled sludge at the bottom of the clarification device is scraped into an inclined cone sludge concentration hopper by a sludge scraper for further concentration, a part of the sludge in the concentration hopper is recycled, the residual sludge is discharged to a sludge collection tank 12, and the fluoride removal rate is more than or equal to 85%.
Then the supernatant in the second-stage clarification solid-liquid separation device 8 flows to a reaction stirring tank of the integrated stirring reaction air floatation device automatically, after entering, a medicament metering automatic adding device is started simultaneously, after stirring coagulation, the supernatant enters an air floatation device release bin, a jet pump of a jet gas-liquid mixing tank is started simultaneously, a compressor supplies jet mixed liquid gas to the jet gas-liquid mixing tank, the mixed liquid gas releases micro bubbles through a release bin releaser, the micro bubbles float upwards to contact with the stirring coagulation liquid entering the release bin, the coagulation liquid floats to a liquid-solid separation bin of the air floatation device, after the liquid-solid floats to the liquid level, slag and mud are scraped into a slag-mud tank by a slag scraping machine of the air floatation device and are discharged to a sludge tank, a water collecting pipe is arranged in the middle of the air floatation device, and the clear liquid is collected by the water collecting pipe and discharged to a monitoring reuse water tank to achieve the deep purification effluent standard. And if the detected water quality in the monitored reuse water tank is unqualified, opening an overrunning pipe valve, and lifting the sewage to the integrated stirring reaction air floatation device for repeated treatment until the discharge standard is met.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the scope of the present invention in any way, and all technical solutions obtained by using equivalent substitution modes and the like fall within the scope of the present invention.
The utility model discloses the part that does not relate to all is the same with prior art or can adopt prior art to realize.
Claims (10)
1. The utility model provides a high concentration fluorine-containing waste water unit coupling deep purification system, its characterized in that, including waste water collecting tank, first multistage stirring reaction tank, the high-efficient clarification solid-liquid separation device of one-level, the multistage stirring reaction tank of second, the high-efficient clarification solid-liquid separation device of second grade, the automatic feeder apparatus of the quantitative hierarchical throwing of medicament, integration stirring reaction air supporting device, monitoring retrieval and utilization pond and sludge collecting pit, the import of waste water collecting tank inserts high fluorine-containing waste water, the first multistage stirring reaction tank of exit linkage, the exit linkage one-level high-efficient clarification solid-liquid separation device of first multistage stirring reaction tank, the top clarified liquid exit linkage second multistage stirring reaction tank of one-level high-efficient clarification solid-liquid separation device, and the mud drain mouth of the concentrated fill of bottom oblique cone divides into two tunnel, wherein is connected to first multistage stirring reaction tank as the mud backward flow pipeline all the way, and another tunnel is connected to sludge collection tank as the sludge drain mouth of the high-efficient clarification solid-liquid separation device of exit linkage integration stirring reaction air supporting device of second grade, wherein the sludge drain mouth of the high-level high-efficient clarification solid-liquid separation device of top clarified liquid separation device of second grade exit linkage integrates stirring reaction air supporting reaction tank, and sludge drain mouth divides into two tunnel stirring reaction tank as another tunnel stirring reaction water outlet of second stirring reaction tank, and monitoring sludge return water stirring reaction tank and sludge return the sludge outlet is connected to be connected to the integrated sludge stirring reaction sludge collection tank.
2. The unit-coupled deep purification system for high-concentration fluorine-containing wastewater as claimed in claim 1, wherein an accident collecting tank is further arranged at a wastewater inlet of the wastewater collecting tank, an inlet of the accident collecting tank is used for introducing high-fluorine-containing wastewater during an accident, and an outlet of the accident collecting tank is connected to the wastewater regulating tank.
3. The high-concentration fluorine-containing wastewater unit coupling deep purification system according to claim 1, wherein the first multistage stirring reaction tank and the second multistage stirring reaction tank are respectively provided with three reaction tanks, and each reaction tank is internally provided with a stirrer, and the stirrer adopts variable frequency and constant speed to realize that each stage of rotating speed meets the test requirements, strengthen the coagulation flocculation effect and form heavy large-ball flowers.
4. The unit-coupled deep purification system for high-concentration fluorine-containing wastewater according to claim 1 or 3, wherein the first multistage stirring reaction tank and the second multistage stirring reaction tank separately feed the chemicals into each reaction tank through a chemical quantitative graded automatic feeding device, and the multistage stirring reaction tanks are interlocked with the fluorine-containing wastewater feeding and chemical quantitative graded automatic feeding devices to realize automatic control mode operation.
5. The unit-coupled deep purification system for high-concentration fluorine-containing wastewater as claimed in claim 3, wherein the bottom inclined cone concentration hoppers of the first-stage high-efficiency clarification solid-liquid separation device and the second-stage high-efficiency clarification solid-liquid separation device are provided with sludge discharge ports, and return pipelines connected with the sludge discharge ports are respectively connected to the second grid reaction tanks of the first multi-stage stirring reaction tank and the second multi-stage stirring reaction tank.
6. The unit-coupled deep purification system for high-concentration fluorine-containing wastewater as claimed in claim 1, wherein a sludge scraper is arranged inside the first-stage high-efficiency clarification solid-liquid separation device and the second-stage high-efficiency clarification solid-liquid separation device, and is used for scraping sludge at the bottom of the clarification solid-liquid separation devices into an inclined cone sludge concentration hopper.
7. The unit-coupled deep purification system for high-concentration fluorine-containing wastewater according to claim 1, wherein a flow guide reflection device is arranged inside the first-stage high-efficiency clarification solid-liquid separation device and the second-stage high-efficiency clarification solid-liquid separation device, and is used for diffusing and pushing flocculated heavy mass flowers to the periphery of the clarification solid-liquid separation device.
8. The unit-coupled deep purification system for high-concentration fluorine-containing wastewater according to claim 1, wherein the integrated stirring reaction air flotation device comprises a reaction stirring tank, an air flotation device release bin, a jet flow gas-liquid mixing dissolved air tank and an air flotation slag scraper, an inlet of the reaction stirring tank is connected with a top clarified liquid outlet of a two-stage high-efficiency clarification solid-liquid separation device, the air flotation slag scraper scrapes the floating sludge of the air flotation device into a slag discharge tank of the air flotation device and discharges the floating sludge to a sludge collection tank, a water collection pipe is arranged in the middle of the air flotation device, and the clear liquid is collected by the water collection pipe and discharged to a monitoring reuse water tank.
9. The unit-coupled deep purification system for high-concentration fluorine-containing wastewater as claimed in claim 1, wherein the reuse monitoring tank is provided with an overrun pipe for backflow, the overrun pipe is connected to the reaction stirring tank of the integrated stirring reaction air flotation device, and the overrun pipe is provided with a pump and a valve.
10. The unit-coupled advanced purification system for high-concentration fluorine-containing wastewater as claimed in claim 1, wherein the sludge collecting tank is provided with a sludge dewatering device; the first-stage high-efficiency clarification solid-liquid separation device, the second-stage high-efficiency clarification solid-liquid separation device, each multi-stage stirring reaction tank, the integrated stirring reaction air flotation device and the monitoring reuse water tank are all provided with online monitoring instruments, the fluorine concentration and flow rate are accurately controlled to be matched with the dosage of the medicament, and the discharged fluorine of the monitoring reuse water tank does not exceed the standard.
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| CN202223063889.7U CN218755326U (en) | 2022-11-18 | 2022-11-18 | High concentration fluorine-containing wastewater unit coupling deep purification system |
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| CN202223063889.7U CN218755326U (en) | 2022-11-18 | 2022-11-18 | High concentration fluorine-containing wastewater unit coupling deep purification system |
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