CN210595509U

CN210595509U - Post-treatment system for sewage station of iron works

Info

Publication number: CN210595509U
Application number: CN201921193622.5U
Authority: CN
Inventors: 逯志海
Original assignee: Shandong Laigang Yongfeng Steel and Iron Co Ltd
Current assignee: Shandong Laigang Yongfeng Steel and Iron Co Ltd
Priority date: 2019-07-26
Filing date: 2019-07-26
Publication date: 2020-05-22
Anticipated expiration: 2029-07-26

Abstract

The utility model discloses a post-treatment system of a sewage station of an iron-making plant, which comprises the sewage station and a primary reverse osmosis device arranged at the sewage station; the water production end of the primary reverse osmosis equipment is connected to a desalination water pipe network; a concentrated water main pipe of the first-stage reverse osmosis equipment is connected to an ironmaking slag flushing pool; a first three-way valve is connected in series between the water production end of the first-stage reverse osmosis equipment and the desalination water pipe network; the middle end of the first three-way valve is connected to a desalted water reverse osmosis raw water tank; the desalted water reverse osmosis raw water tank is sequentially connected with a booster pump, a cartridge filter, a high-pressure pump and desalted water reverse osmosis equipment through pipelines; the post-treatment system of the sewage station of the iron works can further treat the desalted water, and the quality of the produced water is improved; replacing or reducing the working period of the soft water station, and reducing the content of chloride ions in the wastewater of the sewage station; the quality of desalted water is improved, the treated water is merged into the water outlet pipe of the soft water station, the use of steelmaking softened water is reduced, and the pollution discharge pressure is reduced.

Description

Post-treatment system for sewage station of iron works

Technical Field

The utility model relates to a sewage treatment device of iron works, concretely relates to sewage station post-treatment system of iron works belongs to iron works sewage treatment technical field.

Background

An iron works is a family with large energy consumption of water resources, in order to save energy and reduce emission, sewage needs to be subjected to secondary treatment application, and the existing iron works generally build a sewage station so as to collect the sewage and carry out subsequent treatment for secondary use; the sewage collected by the existing sewage station is usually subjected to reverse osmosis treatment by reverse osmosis equipment after being subjected to pre-treatment; the desalted water after the reverse osmosis treatment is mainly supplied to a desalted water pipe network, and is supplied to a primary water pipe network when external supply is difficult, which causes waste of desalted water.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides an iron works sewage station aftertreatment system improves the demineralized water quality to incorporate the treated water into soft water station outlet pipe, reduce the soft water use of steelmaking, alleviate blowdown pressure.

The utility model discloses an iron works sewage station aftertreatment system carries out reverse osmosis treatment to the sewage of preliminary treatment through one-level reverse osmosis equipment to send the desalinized water after handling to first three-way valve, select to enter into desalination water pipe network or the former water tank of desalinized water reverse osmosis through first three-way valve, after entering into the former water tank of desalinized water reverse osmosis, after pressure boost and filtration in proper order, send into desalinized water reverse osmosis equipment through the high-pressure pump and further handle the desalinized water, produce the water quality and improve; the content of chloride ions in the wastewater of the sewage station is reduced; the desalted water after the secondary treatment is sent to a water production distribution point of a pure water station, and the working time of the soft water station can be reduced or replaced; simultaneously, the waste of desalted water is avoided and the pollution discharge pressure is reduced; the concrete structure is as follows: comprises a sewage station and a first-stage reverse osmosis device arranged at the sewage station; the water production end of the primary reverse osmosis equipment is connected to a desalination water pipe network; a concentrated water main pipe of the first-stage reverse osmosis equipment is connected to an ironmaking slag flushing pool; a first three-way valve is connected in series between the water production end of the first-stage reverse osmosis equipment and the desalination water pipe network; the middle end of the first three-way valve is connected to a desalted water reverse osmosis raw water tank; the desalted water reverse osmosis raw water tank is sequentially connected with a booster pump, a cartridge filter, a high-pressure pump and desalted water reverse osmosis equipment through pipelines; the water production end of the desalted water reverse osmosis equipment is connected to the middle end of a second three-way valve through a pipeline; and the other two ends of the second three-way valve are connected in series to a water outlet pipe of the soft water station.

Preferably, the concentrated water end of the desalted water reverse osmosis device is connected to the raw water tank of the primary reverse osmosis device.

Preferably, a cleaning medicine box is arranged between the cartridge filter and the high-pressure pump; an online dosing device is arranged on the cleaning medicine box; and the online monitoring instrument of the desalted water reverse osmosis equipment is linked with the online dosing equipment through a controller.

Compared with the prior art, the utility model discloses an iron works sewage station post-treatment system can be to the further processing of desalinized water, produces water quality improvement; replacing or reducing the working period of the soft water station, and reducing the content of chloride ions in the wastewater of the sewage station; the quality of desalted water is improved, the treated water is merged into the water outlet pipe of the soft water station, the use of steelmaking softened water is reduced, and the pollution discharge pressure is reduced.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the installation structure of the cleaning device of the present invention.

Detailed Description

In the post-treatment system of the sewage station of the iron works as shown in fig. 1, the pre-treated sewage is subjected to reverse osmosis treatment by a primary reverse osmosis device, the treated desalted water is sent to a first three-way valve, and is selectively sent into a desalted water pipe network or a desalted water reverse osmosis raw water tank by the first three-way valve, and is further treated by the desalted water sent into the desalted water reverse osmosis device by a high-pressure pump after being pressurized and filtered in sequence after entering the desalted water reverse osmosis raw water tank, so that the quality of produced water is improved; the content of chloride ions in the wastewater of the sewage station is reduced; the desalted water after the secondary treatment is sent to a water production distribution point of a pure water station, and the working time of the soft water station can be reduced or replaced; simultaneously, the waste of desalted water is avoided and the pollution discharge pressure is reduced; the concrete structure is as follows: comprises a sewage station 1 and a first-stage reverse osmosis device 2 arranged at the sewage station; the water production end of the primary reverse osmosis equipment 2 is connected to a desalination water pipe network 3; the concentrated water main pipe of the first-stage reverse osmosis equipment 2 is connected to an ironmaking slag flushing pool 5; a first three-way valve 6 is connected in series between the water production end of the first-stage reverse osmosis equipment 2 and the desalination water pipe network 3; the middle end of the first three-way valve 6 is connected to a desalted water reverse osmosis raw water tank 7; the desalted water reverse osmosis raw water tank 7 is sequentially connected with a booster pump 8, a cartridge filter 9, a high-pressure pump 10 and desalted water reverse osmosis equipment 11 through pipelines; the water production end of the desalted water reverse osmosis equipment 11 is connected to the middle end of a second three-way valve 12 through a pipeline; the other two ends of the second three-way valve 12 are connected in series to a water outlet pipe 14 of the soft water station 13.

In another embodiment, the concentrated water end of the desalted water reverse osmosis device 7 is connected to the raw water tank of the primary reverse osmosis device 2.

As shown in fig. 2, a cleaning agent tank 15 is provided between the canister filter 9 and the high-pressure pump 10; an online medicine adding device 16 is arranged on the cleaning medicine box 15; the online monitoring instrument 17 of the desalted water reverse osmosis equipment 11 is linked with the online dosing equipment 16 through a controller.

The above-mentioned embodiment is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles of the present invention are included in the claims of the present invention.

Claims

1. A post-treatment system of a sewage station of an iron-making plant comprises the sewage station and a first-stage reverse osmosis device arranged at the sewage station; the water production end of the primary reverse osmosis equipment is connected to a desalination water pipe network; a concentrated water main pipe of the first-stage reverse osmosis equipment is connected to an ironmaking slag flushing pool; the method is characterized in that: a first three-way valve is connected in series between the water production end of the first-stage reverse osmosis equipment and the desalination water pipe network; the middle end of the first three-way valve is connected to a desalted water reverse osmosis raw water tank; the desalted water reverse osmosis raw water tank is sequentially connected with a booster pump, a cartridge filter, a high-pressure pump and desalted water reverse osmosis equipment through pipelines; the water production end of the desalted water reverse osmosis equipment is connected to the middle end of a second three-way valve through a pipeline; and the other two ends of the second three-way valve are connected in series to a water outlet pipe of the soft water station.

2. The iron mill sewage station aftertreatment system of claim 1, wherein: and the concentrated water end of the desalted water reverse osmosis equipment is connected to the raw water tank of the first-stage reverse osmosis equipment.

3. The iron mill sewage station aftertreatment system of claim 1, wherein: a cleaning medicine box is arranged between the security filter and the high-pressure pump; an online dosing device is arranged on the cleaning medicine box; and the online monitoring instrument of the desalted water reverse osmosis equipment is linked with the online dosing equipment through a controller.