Defluorination wastewater recycling system

Abstract

The utility model relates to the technical field of wastewater recycling systems, in particular to a fluoride-removing wastewater recycling system which comprises an adjusting tank, an inlet of the adjusting tank is connected with a wastewater treatment water inlet pipe, the adjusting tank is connected with a wastewater treatment device through a pipeline, and the wastewater treatment device is connected with an external drainage tank through a pipeline. The outer drainage pool is connected with the wet removal make-up water tank through a water return pipeline; the wet removal make-up water tank is connected with a wet dust collector through a pipeline, and the wet dust collector is connected with a wastewater treatment water inlet pipe; the wastewater treatment water inlet pipe comprises a chemical concentrated water pipe, a desulfurization wastewater pipe and a wet removal wastewater pipe; according to the utility model, the defluorinated water in the external drainage pool is introduced into the wet removal supply water tank and then is introduced into the wet dust collector for recycling, and the water used by the wet dust collector enters the wastewater treatment device again for treatment and recycling; therefore, water resources are saved, the consumption of the wet dust collector on the Yellow River water is reduced, and the cost is indirectly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to wastewater recycling system technical field, specifically is a kind of fluoride removal wastewater recycling system. BACKGROUND

[0002] Thermal power generation enterprise, the wastewater generated in production process contains higher concentration of fluoride, such wastewater is directly discharged without treatment, and it can cause serious environmental pollution;The existing treatment method of such wastewater is to discharge to municipal wastewater pipe network system after wastewater treatment reaches discharge standard, which consumes wastewater treatment cost and wastes a lot of water resources. UTILITY MODEL CONTENT

[0003] The main purpose of the utility model is to provide a kind of fluoride removal wastewater recycling system, to solve the problem of wastewater containing fluorine in the prior art being directly discharged after treatment, consuming wastewater treatment cost and wasting a lot of water resources.

[0004] In order to achieve the above purpose, the utility model provides a kind of fluoride removal wastewater recycling system, including adjusting pool, the inlet of adjusting pool is connected with wastewater treatment inlet pipe, adjusting pool is connected with wastewater treatment device by pipeline, wastewater treatment device is connected with external discharge water pool by pipeline, external discharge water pool is connected with wet removal makeup water tank by backwater pipeline;Wet removal makeup water tank is connected with wet dust collector by pipeline, and wet dust collector is connected with wastewater treatment inlet pipe.

[0005] Further, wastewater treatment inlet pipe includes chemical concentrated water pipe, desulfurization wastewater pipe and wet removal wastewater pipe.

[0006] Further, wastewater treatment device includes fluoride removal reaction tank, density sedimentation tank and V-type filter tank, which are sequentially arranged along the flow direction of wastewater and connected by pipeline.

[0007] Further, density sedimentation tank is connected with sludge concentration tank by pipeline, sludge concentration tank is connected with stacked screw dewatering machine by pipeline, and sludge concentration tank and stacked screw dewatering machine are both connected with adjusting pool by pipeline.

[0008] Further, density sedimentation tank and stacked screw dewatering machine are both connected with PAM dosing pipe.

[0009] Further, V-type filter tank is connected with adjusting pool by pipeline.

[0010] Further, fluoride removal reaction tank is connected with fluoride removal agent dosing pipe.

[0011] Further, external discharge water pool is connected with municipal sewage pipe network by discharge pipeline;Valve is arranged on backwater pipeline and discharge pipeline.

[0012] The water in the effluent pool after defluorination is introduced into the wet dust removal water supply tank, and then introduced into the wet dust collector for recycling, and the water after use of the wet dust collector is introduced into the wastewater treatment device again for treatment and recycling, so that the water resources are saved, the consumption of the wet dust collector for the Yellow River water is reduced, and the cost is indirectly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0013] The drawings accompanying the specification of this application form a part thereof, serve to provide further understanding of the present application, and together with the description of the exemplary embodiments of the present application, serve to explain the present application, and do not constitute an improper limitation on the present application.

[0014] Figure 1 It is a structural schematic view of the embodiment;

[0015] In the figure: 1, adjustment pool;2, effluent pool;3, wet dust removal water supply tank;4, backwater pipeline;5, wet dust collector;6, chemical thick water pipe;7, desulfurization wastewater pipe;8, wet dust removal wastewater pipe;9, defluorination reaction tank;10, density sedimentation tank;11, V-type filter tank;12, sludge thickening tank;13, stacked screw dewaterer;14, municipal sewage pipe network;15, discharge pipeline. DETAILED DESCRIPTION

[0016] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0017] As Figure 1 shown, according to the embodiment of the present application, a defluorinated wastewater recycling system is provided, which comprises an adjustment pool 1, the inlet of the adjustment pool 1 is connected with a wastewater treatment inlet pipe, the adjustment pool 1 is connected with a wastewater treatment device through a pipeline, the wastewater treatment device is connected with an effluent pool 2 through a pipeline, and the effluent pool 2 is connected with a wet dust removal water supply tank 3 through a backwater pipeline 4;The wet dust removal water supply tank 3 is connected with a wet dust collector 5 through a pipeline, and the wet dust collector 5 is connected with a wastewater treatment inlet pipe.

[0018] The wastewater treatment inlet pipe comprises a chemical thick water pipe 6, a desulfurization wastewater pipe 7 and a wet dust removal wastewater pipe 8.

[0019] The wastewater treatment device comprises a defluorination reaction tank 9, a density sedimentation tank 10 and a V-type filter tank 11 which are sequentially arranged along the flow direction of the wastewater and connected through pipelines;The defluorination reaction tank 9, the density sedimentation tank 10 and the V-type filter tank 11 respectively remove fluorine, precipitate and filter the wastewater.

[0020] The density sedimentation tank 10 is connected with the sludge concentration tank 12 through a pipeline, the sludge concentration tank 12 is connected with the stacked screw dewatering machine 13 through a pipeline, and the sludge concentration tank 12 and the stacked screw dewatering machine 13 are both connected with the adjusting tank 1 through a pipeline; liquid generated in the concentration process of the sludge concentration tank 12 and the stacked screw dewatering machine 13 is returned to the adjusting tank 1 for recycling, so that water resources are saved.

[0021] The density sedimentation tank 10 and the stacked screw dewatering machine 13 are both connected with PAM dosing pipes; the density sedimentation tank 10 adds PAM anions, mainly adsorbing heavy metal ions in waste water; and the stacked screw dewatering machine 13 adds PAM cations, mainly adsorbing flocculation negative charge substances, not sticking to filter cloth, and being suitable for producing mud.

[0022] The V-shaped filter tank 11 is connected with the adjusting tank 1 through a pipeline; high-concentration solution filtered by the V-shaped filter tank 11 is returned to the adjusting tank 1 for continuing to be treated in a circulating manner; and thus water resources are saved.

[0023] The defluorination reaction tank 9 is connected with a defluorination agent dosing pipe; addition of the defluorination agent mainly removes fluorine ions in waste water.

[0024] The external drainage tank 2 is connected with the municipal sewage pipe network 14 through a drainage pipeline 15; valves are arranged on the return pipeline 4 and the drainage pipeline 15; water in the external drainage tank 2 is preferentially provided to the wet dust collector 5; and when the wet dust collector 5 is not fully used, the excess water is drained to the municipal sewage pipe network 14.

[0025] Before the embodiment is used, the wet dust collector 5 completely uses the Yellow River water; in the embodiment, water in the external drainage tank 2 after defluorination is introduced into the wet dust collector 5 for recycling by being introduced into the wet dust collector water tank 3; and water used by the wet dust collector 5 is treated again in the waste water treatment device and recycled; thus water resources are saved, consumption of the Yellow River water by the wet dust collector 5 is reduced, and costs are indirectly reduced.

[0026] After the embodiment is used, 576,000 tons of the Yellow River water can be saved every year; water quality of water in the external drainage tank 2 after defluorination is higher than that of the Yellow River water; the wet dust collector 5 uses the defluorinated external drainage water with high water quality, the problem of frequent blockage of a flushing nozzle of the wet dust collector 5 is effectively solved, and the health level of the wet dust collector 5 is improved.

[0027] The above merely describes preferred embodiments of the utility model and is not used for limiting the utility model; for those skilled in the art, the utility model can have various changes and variations; any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A fluorine removal wastewater recycling system, comprising a regulating tank (1), characterized in that: The inlet of the regulating tank (1) is connected to a wastewater treatment inlet pipe, the regulating tank (1) is connected to a wastewater treatment device via a pipe, the wastewater treatment device is connected to an external drainage tank (2) via a pipe, the external drainage tank (2) is connected to a wet degassing supply water tank (3) via a return water pipe (4); the wet degassing supply water tank (3) is connected to a wet dust collector (5) via a pipe, and the wet dust collector (5) is connected to a wastewater treatment inlet pipe.

2. The defluorination wastewater recycling system according to claim 1, characterized in that: The wastewater treatment inlet pipe comprises a chemical concentrated water pipe (6), a desulfurization wastewater pipe (7) and a wet desulfurization wastewater pipe (8).

3. The defluorination wastewater recycling system according to claim 1, characterized in that: The wastewater treatment device comprises a defluorination reaction tank (9), a density sedimentation tank (10), and a V-shaped filter tank (11), which are sequentially arranged along the flow direction of the wastewater and connected by pipelines.

4. The defluorination wastewater recycling system according to claim 3, characterized in that: The density sedimentation tank (10) is connected to the sludge concentration tank (12) via a pipeline, the sludge concentration tank (12) is connected to the screw press dewatering machine (13) via a pipeline, and the sludge concentration tank (12) and the screw press dewatering machine (13) are both connected to the regulating tank (1) via pipelines.

5. The fluorine removal wastewater recycling system according to claim 4, characterized in that: The density sedimentation tank (10) and the screw press dehydrator (13) are both connected to a PAM dosing pipe.

6. The defluorination wastewater recycling system according to claim 3, characterized in that: The V-shaped filter tank (11) is connected to the regulating tank (1) via a pipeline.

7. The fluorine removal wastewater recycling system according to claim 3, characterized in that: The defluorination reaction tank (9) is connected to a defluorination agent dosing pipe.

8. The defluorination wastewater recycling system according to claim 1, characterized in that: The external drainage pool (2) is connected to the municipal sewage network (14) via a discharge pipe (15); valves are provided on both the return pipe (4) and the discharge pipe (15).

Images