Defluorination emergency disposal integrated equipment

Abstract

The utility model relates to the technical field of environment-friendly water treatment, in particular to defluorination emergency disposal integrated equipment which comprises a container shell, and a collecting water tank, a defluorination reaction tank, a pH regulating tank, a coagulation reaction tank, a sedimentation tank and a plate-and-frame filter press which are arranged in the container shell, a fluorine removal agent and a flocculating agent are arranged in the fluorine removal reaction tank; and the sludge in the sedimentation tank is subjected to filter pressing by a plate-and-frame filter press to form a sludge cake, and the sludge cake is collected and transported outwards for disposal. The fluoride removal and emergency disposal integrated equipment has the beneficial effects that the fluoride in the water environment can be reduced to be less than 1.0 mg / L aiming at the standard exceeding fluoride in the water environment of a drainage basin, so that the fluoride requirement of drinking water can be stably met.

Description

Technical Field

[0001] This utility model relates to the field of environmental water treatment technology, specifically to an integrated equipment for emergency fluoride removal. Background Technology

[0002] Western Fujian has a complex geological environment and contains abundant fluorite deposits. The mining of fluorite and the development of fluorochemical enterprises generate large amounts of fluoride-containing wastewater. Although this industrial wastewater is treated before being discharged into the water environment, the emission standard for fluorides from industrial enterprises is 10 mg / L, far exceeding the drinking water fluoride standard of 1 mg / L. Therefore, there is a risk of excessive fluoride levels in the water environment near fluorite mining enterprises and fluorochemical industrial parks.

[0003] Fluorine is an essential trace element for the human body, but excessive fluoride can cause significant harm. Long-term consumption of water with fluoride concentrations exceeding a certain level can lead to rough teeth, yellowing of the dental lamina, and blackening of teeth—symptoms known as "dental fluorosis." Long-term consumption of water with fluoride concentrations of 3-6 mg / L can affect the function of bone cells and the morphology, structure, and strength of bones, a condition known as "skeletal fluorosis." Patients experience changes in bone density, bone deformities, rickets, paralysis, abnormal pain in the back and legs, gradual loss of labor capacity, and even death. Exposure to fluoride-contaminated areas can also affect children's intellectual development. Tang et al., using meta-analysis, found a close link between fluoride exposure and low IQ; children living in fluoride-contaminated areas were five times more likely to develop low IQs than those living in areas with no or slight fluoride pollution.

[0004] Flocculation sedimentation is mainly used for wastewater with low fluoride content. Conceptually, there is no significant difference between flocculation sedimentation and chemical precipitation. Flocculation sedimentation involves adding a coagulant to the wastewater to be treated, utilizing the free F- in the water to react with Al-. 3 + Fe 3+ Mn 2+ Fluoride removal is a method that removes fluoride through physical adsorption, complexation, and sweeping reactions of cations. Common flocculants are divided into two main categories: aluminum salts and iron salts. Fluoride removal using flocculants (aluminum and iron salts) is based on the formation of highly absorbent flocculant hydroxide precipitates through hydrolysis. Taking aluminum salt flocculation and precipitation as an example, after aluminum salt is added to water, it utilizes Al... 3+ With F - The complexation and Al(OH)3 flocs generated from the intermediate products of aluminum salt hydrolysis physically adsorb, ion exchange, and complexation sedimentation to remove fluoride ions from water.

[0005] Existing emergency response devices for excessive fluoride levels in water cannot be integrated and can not be used in a mobile manner. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide an integrated equipment for emergency defluorination that can be used on a mobile basis.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: providing an integrated equipment for emergency defluorination, including a container shell and a collection pool, a defluorination reaction pool, a pH adjustment pool, a coagulation reaction pool, a sedimentation pool and a plate and frame filter press installed inside the container shell; the defluorination reaction pool is equipped with a defluorinating agent and a flocculant; the sludge in the sedimentation pool is pressed into sludge cake by the plate and frame filter press, collected and transported for disposal.

[0008] Furthermore, the aforementioned integrated equipment for emergency defluorination also includes a fluoride ion detection device, which is used to detect the fluoride content in the liquid after the sedimentation tank has separated sludge and water.

[0009] Furthermore, the aforementioned integrated defluorination emergency response equipment also includes a pH detection device, which is used to detect the pH of the liquid after the sedimentation tank has separated sludge and water.

[0010] Furthermore, in the aforementioned integrated defluorination emergency response equipment, the coagulation reaction tank is equipped with a mechanical stirrer.

[0011] Furthermore, the aforementioned integrated defluorination emergency response equipment also includes a submersible pump, which is used to pump water bodies with excessive fluoride levels in the target aquatic environment into a collection pool.

[0012] Furthermore, in the aforementioned integrated defluorination emergency response equipment, a flow meter is installed on the pipeline between the collection water tank and the defluorination reaction tank.

[0013] Furthermore, in the aforementioned integrated defluorination emergency response equipment, the bottom of the collection pool is equipped with a drain pipe.

[0014] Furthermore, in the aforementioned integrated defluorination emergency response equipment, the pH adjustment tank is connected to a sodium hydroxide dosing tank.

[0015] Furthermore, in the aforementioned integrated defluorination emergency response equipment, the defluorination reaction tank is connected to a defluorination agent dosing tank.

[0016] Furthermore, in the aforementioned integrated defluorination emergency response equipment, the defluorination reaction tank is connected to a flocculant dosing tank.

[0017] The beneficial effects of this invention are as follows: This integrated defluoridation emergency treatment equipment is housed within a container shell, enabling rapid mobility and the shortest possible time to address potential fluoride pollution in watershed environments. Specifically, this equipment can reduce fluoride levels in watershed water to below 1.0 mg / L, stably meeting drinking water fluoride requirements. Furthermore, this equipment boasts high processing efficiency; the integrated defluoridation emergency treatment system can process 100-200 tons of water per hour, quickly achieving stable fluoride levels in the watershed. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the integrated defluorination emergency response equipment of Embodiment 1, which is a specific embodiment of this utility model.

[0019] Label Explanation:

[0020] 1. Inlet; 2. Container shell; 3. Collection tank; 4. Drain pipe; 5. Defluoridation reaction tank; 6. pH adjustment tank; 7. Coagulation reaction tank; 8. First mechanical agitator; 9. Sedimentation tank; 10. Honeycomb inclined plate; 11. Second mechanical agitator; 12. Defluoridant dosing tank; 13. Sodium hydroxide dosing tank; 14. PAM dosing tank; 15. Distribution box; 16. pH and fluoride ion detection device; 17. Sedimentation tank baffle; 18. Sedimentation tank weir; 19. Outlet; 20. Sludge thickening tank; 21. Plate and frame filter press. Detailed Implementation

[0021] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0022] This utility model provides an integrated equipment for emergency defluorination, including a container shell and a collection tank, a defluorination reaction tank, a pH adjustment tank, a coagulation reaction tank, a sedimentation tank, and a plate and frame filter press installed inside the container shell; the defluorination reaction tank is equipped with a defluorinating agent and a flocculant; the sludge in the sedimentation tank is pressed into sludge cakes by the plate and frame filter press, collected, and transported for disposal.

[0023] The beneficial effects of this utility model are as follows: This integrated defluoridation emergency treatment equipment, targeting excessive fluoride levels in watershed environments, can reduce fluoride levels in the water to below 1.0 mg / L, stably meeting drinking water fluoride requirements. This equipment allows for rapid deployment, addressing potential fluoride pollution in watershed environments in the shortest possible time. It boasts high treatment efficiency; the integrated defluoridation emergency treatment system can process 100-200 tons of water per hour, quickly achieving stable fluoride levels in the watershed environment. Furthermore, this equipment has low energy consumption and requires minimal labor; the integrated defluoridation system is intelligent, requiring only 1-2 workers to handle emergency situations involving excessive fluoride levels in the water environment. This equipment is also suitable for emergency treatment of pollutants such as ammonia nitrogen, total phosphorus, and heavy metals; simply replace the high-efficiency defluoridator with the appropriate pollutant removal agent.

[0024] Furthermore, the aforementioned integrated equipment for emergency defluorination also includes a fluoride ion detection device, which is used to detect the fluoride content in the liquid after the sedimentation tank has separated sludge and water.

[0025] As described above, installing a fluoride ion detection device ensures that the fluoride content in the water is reduced to below 1.0 mg / L, meeting the drinking water fluoride standard.

[0026] Furthermore, the aforementioned integrated defluorination emergency response equipment also includes a pH detection device, which is used to detect the pH of the liquid after the sedimentation tank has separated sludge and water.

[0027] As described above, setting up a pH detection device ensures that the water pH is adjusted to a specific value.

[0028] Furthermore, in the aforementioned integrated defluorination emergency response equipment, the coagulation reaction tank is equipped with a mechanical stirrer.

[0029] Furthermore, the aforementioned integrated defluorination emergency response equipment also includes a submersible pump, which is used to pump water bodies with excessive fluoride levels in the target aquatic environment into a collection pool.

[0030] As described above, installing a submersible pump can facilitate the collection of target water bodies in the water collection pool.

[0031] Furthermore, in the aforementioned integrated defluorination emergency response equipment, a flow meter is installed on the pipeline between the collection water tank and the defluorination reaction tank.

[0032] As described above, setting up a flow meter can more efficiently and effectively remove refrigerant.

[0033] Furthermore, in the aforementioned integrated defluorination emergency response equipment, the bottom of the collection pool is equipped with a drain pipe.

[0034] Furthermore, in the aforementioned integrated defluorination emergency response equipment, the pH adjustment tank is connected to a sodium hydroxide dosing tank.

[0035] Furthermore, in the aforementioned integrated defluorination emergency response equipment, the defluorination reaction tank is connected to a defluorination agent dosing tank.

[0036] As can be seen from the above description, setting up a fluoride dosing tank improves the dosing efficiency.

[0037] Furthermore, in the aforementioned integrated defluorination emergency response equipment, the defluorination reaction tank is connected to a flocculant dosing tank.

[0038] As can be seen from the above description, setting up a flocculant dosing tank improves the dosing efficiency.

[0039] Example 1

[0040] Please see Figure 1 This utility model provides an integrated equipment for emergency defluorination, including a container shell 2 and a collection pool 3, a defluorination reaction pool 5, a pH adjustment pool 6, a coagulation reaction pool 7, a sedimentation pool 9, and a plate and frame filter press 21 installed inside the container shell 2; the defluorination reaction pool 5 is equipped with a defluorinating agent and a flocculant; the sludge in the sedimentation pool is pressed into sludge cake by the plate and frame filter press 21, collected, and transported for disposal.

[0041] This equipment is a container skid-mounted structure, which is convenient for mobile transportation. For water bodies with excessive fluoride in the target water environment, a submersible pump is first used to enter the integrated defluorination emergency treatment equipment through the inlet 1, and then enters the collection pool 3. The bottom of the collection pool 3 is equipped with an emptying pipe 4.

[0042] This equipment also includes a defluorinating agent dosing tank 12 and a PAM dosing tank 14 (polyacrylamide flocculant), which are connected to the defluorinating reaction tank 5; a sodium hydroxide dosing tank 13 is connected to the pH adjustment tank 6; the dosing tanks are equipped with a second mechanical stirrer 11; this equipment also includes an electrical control box 15 for controlling the stirrers and other electrical components in this equipment.

[0043] After being treated by defluoridating agent complexation adsorption and flocculation sedimentation, the water exceeding the standard enters the pH adjustment tank 6, then the coagulation reaction tank 7 (equipped with a first mechanical stirrer 8), and subsequently passes through the sedimentation tank 9 and honeycomb inclined plate 10 for mud-water separation. The separated supernatant is tested by pH and fluoride ion detection device 16 and discharged after meeting the standards.

[0044] Sludge-water separation can be achieved using a sludge drying system, which includes a sedimentation tank baffle 17; a sedimentation tank weir 18; an outlet 19; a sludge thickening tank 20; and a plate and frame filter press 21.

[0045] The sludge undergoes sludge thickening and plate and frame filter press 21 to obtain sludge cakes with a dryness of over 40%, which are then collected and transported for disposal. The integrated defluoridation emergency treatment equipment can achieve a treatment capacity of 100-200 tons of water per hour, quickly achieving stable compliance with fluoride standards in the watershed.

[0046] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An integrated emergency defluorination equipment, characterized in that, It includes a container shell and a collection tank, a defluorination reaction tank, a pH adjustment tank, a coagulation reaction tank, a sedimentation tank, and a plate and frame filter press installed inside the container shell; the defluorination reaction tank is equipped with defluorinating agent and flocculant; the sludge from the sedimentation tank is pressed into sludge cakes by the plate and frame filter press, collected, and transported for disposal.

2. The integrated defluorination emergency response equipment according to claim 1, characterized in that, It also includes a fluoride ion detection device, which is used to detect the fluoride content in the liquid after the sedimentation tank has separated sludge and water.

3. The integrated defluorination emergency response equipment according to claim 1, characterized in that, It also includes a pH detection device, which is used to detect the pH of the liquid after the sedimentation tank has separated mud and water.

4. The integrated defluorination emergency response equipment according to claim 1, characterized in that, The coagulation reaction tank is equipped with a mechanical stirrer.

5. The integrated defluorination emergency response equipment according to claim 1, characterized in that, It also includes a submersible pump used to pump water bodies in the target aquatic environment with excessive fluoride levels into a collection tank.

6. The integrated defluorination emergency response equipment according to claim 1, characterized in that, A flow meter is installed on the pipeline between the water collection tank and the defluorination reaction tank.

7. The integrated defluorination emergency response equipment according to claim 1, characterized in that, The bottom of the water collection tank is equipped with a drain pipe.

8. The integrated defluorination emergency response equipment according to claim 1, characterized in that, The pH adjustment tank is connected to a sodium hydroxide dosing tank.

9. The integrated defluorination emergency response equipment according to claim 1, characterized in that, The defluorination reaction tank is connected to a defluorination agent dosing tank.

10. The integrated defluorination emergency response equipment according to claim 1, characterized in that, The defluorination reaction tank is connected to a flocculant dosing tank.

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