CN218665652U

CN218665652U - Heavy metal wastewater treatment and recovery system

Info

Publication number: CN218665652U
Application number: CN202223211287.1U
Authority: CN
Inventors: 袁晓明; 吕新宁; 陈森; 张玉新; 秦耀伟; 倪小平
Original assignee: Laiyang Yuming Environmental Protection Technology Co ltd
Current assignee: Laiyang Yuming Environmental Protection Technology Co ltd
Priority date: 2022-12-01
Filing date: 2022-12-01
Publication date: 2023-03-21
Anticipated expiration: 2032-12-01

Abstract

The utility model relates to the technical field of waste liquid treatment, in particular to a heavy metal wastewater treatment and recovery system, which comprises an adjusting unit, a settling tank, a water treatment unit and a sludge treatment unit; the adjusting unit comprises a comprehensive adjusting tank and a wastewater stirring tank which are communicated, and one side of the wastewater stirring tank is communicated with a buffer tank; the buffer tank is communicated with the settling tank; the water treatment unit comprises a clear liquid pool, a clear water pump, reverse osmosis equipment and a water return tank which are sequentially communicated; the sludge treatment unit comprises a thick slurry stirring tank and a filter press which are communicated in sequence; the bottom of the settling tank is communicated with the thick slurry stirring tank, the top of the settling tank is provided with an overflow groove, and the overflow groove is communicated with the clear liquid pool. Through the adjusting unit and the water treatment unit, the pH value and the metal ion concentration of the treated effluent are stable, and the effluent can reach the discharge standard; through the filter pressing unit, the sludge containing heavy metals is extruded into filter cakes by the filter press, and the filter cakes are recycled to the smelting and material preparing system, so that comprehensive recovery and disposal are realized, and entrusted disposal cost is saved.

Description

Heavy metal wastewater treatment and recovery system

Technical Field

The utility model relates to a waste liquid treatment technical field, in particular to heavy metal waste water treatment and recovery system.

Background

Hazardous waste containing heavy metals is treated by a smelting furnace, and can generate smoke, water-quenched slag and multi-metal alloy. Under the condition of high-temperature smelting, most of moisture in the fed materials enters flue gas. In the wet treatment process of the flue gas, moisture can be separated out along with the reduction of the temperature of the flue gas, so that a large amount of wastewater, such as desulfurization wastewater, washing wastewater and the like, is generated, the wastewater not only contains acid with serious pollution, but also contains metal ions with serious harm to the environment, such as copper, nickel, lead, zinc and the like, the pollutant components of the wastewater are complex and serious in pollution, and the wastewater can be discharged into a sewage pipe network or a water body after being treated to reach the standard. The main problems that exist during the operation of the wastewater treatment system in the prior art are as follows: the pH value fluctuation of the effluent is large, the concentration fluctuation of metal ions is large, the treated water cannot be recycled for production, and the produced metal-containing sludge needs to be entrusted to a third party for treatment.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome the defect and not enough that exist among the prior art, for this reason the utility model provides a heavy metal wastewater treatment and recovery system, the pH value when can guaranteeing to go out water is stable and reuse the return water after filtering, simultaneously, can retrieve the heavy metal residue.

In order to realize the aim, the utility model provides a heavy metal wastewater treatment and recovery system, which comprises a regulating unit, a settling tank, a water treatment unit and a sludge treatment unit; the adjusting unit comprises a comprehensive adjusting tank and a wastewater stirring tank which are communicated, and one side of the wastewater stirring tank is communicated with a buffer tank; the buffer tank is communicated with the settling tank; the water treatment unit comprises a clear liquid pool, a clear water pump, reverse osmosis equipment and a water return tank which are sequentially communicated; the sludge treatment unit comprises a thick slurry stirring tank and a filter press which are communicated in sequence; the bottom of the settling tank is communicated with the thick slurry stirring tank, the top of the settling tank is provided with an overflow groove, and the overflow groove is communicated with the clear liquid tank.

Further, the wastewater stirring tank comprises a tank body A, a stirring rod A driven by a motor A is arranged in the tank body A, a stirring blade A is arranged at the bottom of the stirring rod A, and the motor A is fixed at the top of the tank body A; a liquid inlet and a dosing tank A are arranged on one side of the tank body A, and the dosing tank A is communicated with the tank body A through a metering pump A; the liquid inlet is communicated with the comprehensive adjusting tank through a submersible sewage pump, and the submersible sewage pump is arranged at the bottom of the comprehensive adjusting tank.

Further, be equipped with on the lateral wall of buffer pool with medicine jar B, with medicine jar B through measuring pump B with the buffer pool intercommunication.

Furthermore, aeration pipes communicated with an external air source are arranged at the bottoms of the comprehensive adjusting tank and the clear liquid tank.

Further, one side in clear liquid pond is equipped with medicine jar C, medicine jar C through measuring pump C with clear liquid pond intercommunication.

Furthermore, the water treatment unit also comprises a plurality of filters, and the filters are connected between the clean water pump and the reverse osmosis equipment in parallel.

Further, dense thick liquid agitator tank is including a jar body B, jar internal puddler B that is equipped with motor B driven that is equipped with of B, puddler B's bottom is equipped with stirring leaf B, motor B fixes jar body B's top.

Furthermore, a pressure filter pump communicated with the thick slurry stirring tank is arranged between the thick slurry stirring tank and the pressure filter.

Compared with the prior art, the beneficial effects of the utility model are that: through the adjusting unit and the water treatment unit, the pH value and the metal ion concentration of the treated effluent are stable, and the effluent can reach the discharge standard; and secondly, the water in the backwater tank can be recycled, so that new water for production is saved. Through the filter pressing unit, the sludge containing heavy metals is extruded into a filter cake by the filter press, and the filter cake is recycled by the smelting material preparation system, so that comprehensive recovery and disposal are realized, and entrusted disposal cost is saved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Wherein: 1. a comprehensive adjusting tank; 2. a wastewater stirring tank; 3. a settling tank; 4. a thick slurry stirring tank; 5. a filter press; 6. a clear liquid pool; 7. a filter; 8. reverse osmosis equipment; 9. a water return tank; 11. a submersible sewage pump; 21. a buffer pool; 22. a medicine adding tank B; 23. a metering pump B; 24. a medicine adding tank A; 25. a metering pump A; 51. a filter-pressing pump; 61. a medicine adding tank C; 62. and (4) a metering pump C.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Examples

Referring to fig. 1, the utility model provides a heavy metal wastewater treatment and recovery system, which comprises a regulating unit, a settling tank 3, a water treatment unit and a sludge treatment unit; the adjusting unit comprises a comprehensive adjusting tank 1 and a wastewater stirring tank 2 which are communicated, and one side of the wastewater stirring tank 2 is communicated with a buffer tank 21; the buffer tank 21 is communicated with the settling tank 3; the water treatment unit comprises a clear liquid pool 6, a clear water pump, a reverse osmosis device 8 and a return water tank 9 which are communicated in sequence; the sludge treatment unit comprises a thick slurry stirring tank 4 and a filter press 5 which are communicated in sequence; the bottom of the settling tank 3 is communicated with a thick slurry stirring tank 4, the top of the settling tank 3 is provided with an overflow groove, and the overflow groove is communicated with a clear liquid pool 6.

As an embodiment of the utility model, the wastewater stirring tank 2 comprises a tank body A, a stirring rod A driven by a motor A is arranged in the tank body A, a stirring blade A is arranged at the bottom of the stirring rod A, and the motor A is fixed at the top of the tank body A; a liquid inlet and a dosing tank A24 are arranged on one side of the tank body A, and the dosing tank A24 is communicated with the tank body A through a metering pump A25; the liquid inlet is communicated with the comprehensive adjusting tank 1 through a submersible sewage pump 11, and the submersible sewage pump 11 is arranged at the bottom of the comprehensive adjusting tank 1. The dosing tank A24 is used for containing a pH regulator and a metal catching agent.

Preferably, a dosing tank B22 is arranged on the side wall of the buffer tank 21, and the dosing tank B22 is communicated with the buffer tank 21 through a metering pump B23. The dosing tank B22 is here intended to contain a flocculating agent.

As an embodiment of the utility model, the bottom of the comprehensive adjusting tank 1 and the clear liquid tank 6 is provided with an aeration pipe communicated with an external air source, and the air stirring is realized through aeration to promote the flocculation process of impurities in water.

As an embodiment of the utility model, one side of clear liquid pond 6 is equipped with medicinal cupping C61, and medicinal cupping C61 communicates with clear liquid pond 6 through measuring pump C62. The dosing tank C61 is herein adapted to contain a hardness modifier.

As an embodiment of the present invention, the water treatment unit further comprises a plurality of filters 7, and the plurality of filters 7 are connected in parallel between the clean water pump and the reverse osmosis apparatus 8.

As an embodiment of the utility model, thick liquid agitator tank 4 is equipped with motor B driven puddler B including jar body B, jar internal B, and puddler B's bottom is equipped with stirring leaf B, and motor B fixes at jar body B's top.

Preferably, a pressure filtration pump 51 is provided in communication between the thick slurry agitation tank 4 and the pressure filter 5.

Foretell reverse osmosis equipment is the existing equipment that can purchase, and its effect through a plurality of reverse osmosis membrane mainly improves the quality of water, specifically no longer gives details.

Foretell subsider 3 is the existing equipment that can purchase, and it mainly includes the cell body, is equipped with motor C driven puddler C in the cell body, and puddler C's bottom is equipped with the tine harrow, and motor C fixes at the cell body top. The top of the tank body is also provided with an overflow tank for containing the settled clear water in the tank body, which is not described in detail.

Foretell pressure filter 5 is the existing equipment that can purchase, and it is main including installing two clamp plates on the organism, is equipped with a plurality of pressure disks between two clamp plates, and the mud that contains heavy metal holds in the pressure disk, and under outside hydraulic system's drive, one of them clamp plate removes and dewaters the mud in the pressure disk to another clamp plate, leaves the filter cake at last, and is specifically not being repeated.

The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. Therefore, the above-described embodiments of the present invention should be considered only as illustrative and not restrictive in any way, the scope of the present invention being indicated by the claims, and any changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A heavy metal wastewater treatment and recovery system is characterized by comprising a regulating unit, a settling tank (3), a water treatment unit and a sludge treatment unit; the adjusting unit comprises a comprehensive adjusting tank (1) and a wastewater stirring tank (2) which are communicated, and one side of the wastewater stirring tank (2) is communicated with a buffer tank (21); the buffer tank (21) is communicated with the settling tank (3); the water treatment unit comprises a clear liquid pool (6), a clear water pump, a reverse osmosis device (8) and a water return tank (9) which are communicated in sequence; the sludge treatment unit comprises a thick slurry stirring tank (4) and a filter press (5) which are communicated in sequence; the bottom of the settling tank (3) is communicated with the thick slurry stirring tank (4), the top of the settling tank (3) is provided with an overflow groove, and the overflow groove is communicated with the clear liquid pool (6).

2. The heavy metal wastewater treatment and recovery system according to claim 1, wherein the wastewater stirring tank (2) comprises a tank body A, a stirring rod A driven by a motor A is arranged in the tank body A, a stirring blade A is arranged at the bottom of the stirring rod A, and the motor A is fixed at the top of the tank body A; a liquid inlet and a dosing tank A (24) are arranged on one side of the tank body A, and the dosing tank A (24) is communicated with the tank body A through a metering pump A (25); the liquid inlet is communicated with the comprehensive adjusting tank (1) through a submersible sewage pump (11), and the submersible sewage pump (11) is arranged at the bottom of the comprehensive adjusting tank (1).

3. The heavy metal wastewater treatment and recovery system of claim 2, wherein a dosing tank B (22) is arranged on the side wall of the buffer tank (21), and the dosing tank B (22) is communicated with the buffer tank (21) through a metering pump B (23).

4. The heavy metal wastewater treatment and recovery system according to claim 1, wherein the bottoms of the comprehensive adjusting tank (1) and the clear liquid tank (6) are provided with aeration pipes communicated with an external air source.

5. The heavy metal wastewater treatment and recovery system of claim 4, wherein a dosing tank C (61) is arranged on one side of the clear liquid tank (6), and the dosing tank C (61) is communicated with the clear liquid tank (6) through a metering pump C (62).

6. The heavy metal wastewater treatment and recovery system of claim 5, wherein the water treatment unit further comprises a plurality of filters (7), and the plurality of filters (7) are connected in parallel between the clean water pump and the reverse osmosis device (8).

7. The heavy metal wastewater treatment and recovery system according to claim 1, wherein the thick slurry stirring tank (4) comprises a tank body B, a stirring rod B driven by a motor B is arranged in the tank body B, a stirring blade B is arranged at the bottom of the stirring rod B, and the motor B is fixed at the top of the tank body B.

8. The heavy metal wastewater treatment and recovery system according to claim 7, wherein a pressure filtration pump (51) is provided between the thick slurry stirring tank (4) and the pressure filter (5).