CN215975333U

CN215975333U - Integrated double-membrane desalination skid-mounted equipment for sewage treatment

Info

Publication number: CN215975333U
Application number: CN202122639547.4U
Authority: CN
Inventors: 张建忠; 刘双凯; 吕俐
Original assignee: Tianjin Kunpeng Chemical Technology Co ltd
Current assignee: Tianjin Kunpeng Chemical Technology Co ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-03-08
Anticipated expiration: 2031-10-29

Abstract

The utility model discloses integrated double-membrane desalination skid-mounted equipment for sewage treatment, which comprises a first armor box (1) and a second armor box (2); a raw water filter (1-1) connected with a raw water pipeline is arranged in the first armored box, and a water outlet of the raw water filter is connected with an ultrafiltration membrane system (1-3); the ultrafiltration membrane system (1-3) is connected with a reverse osmosis membrane system (2-1) arranged in the second armor box (2); the first armor box is also internally provided with a compressed air unit (1-4) and an ultrafiltration backwashing unit (1-5); and a dosing device (1-6) is also arranged in the second armor box. By adopting the technical scheme, the equipment is integrated into two independent containers, and the integrated design reduces the floor area of the traditional distributed equipment and is easy for field management and movement; on the other hand, the maintenance and the production are more convenient, and the maintenance cost is further reduced; meanwhile, the production and assembly of the product can be realized.

Description

Integrated double-membrane desalination skid-mounted equipment for sewage treatment

Technical Field

The utility model belongs to sewage treatment equipment, and particularly relates to integrated double-membrane desalination skid-mounted equipment for sewage treatment.

Background

For sewage treatment, the treatment process of filtration and reverse osmosis is mostly used. The existing treatment process has the advantages that the filtration units, such as a raw water filtration unit, an ultrafiltration membrane system, a reverse osmosis membrane system and an ultrafiltration backwashing unit, of the existing treatment process are distributed, so that the requirement on a sewage treatment site is high, a large site is required for configuration, and more management is required for connection, so that the construction cost is increased undoubtedly, and meanwhile, the number of leakage detection points is large; therefore, the utility model relates to skid-mounted equipment meeting the requirement of dual-mode sewage treatment.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the utility model provides the double-membrane desalting skid-mounted equipment which is compact in structure, high in integration degree and easy to maintain and can realize production in the production area.

The utility model is realized in this way, a kind of integrated double membrane desalination skid-mounted apparatus for sewage treatment, characterized by that, the double membrane desalination skid-mounted apparatus includes the first armor case (1) and second armor case (2);

a raw water filter (1-1) connected with a raw water pipeline is arranged in the first armored box, and the raw water filter adopts a filter with a self-cleaning function; the water outlet of the raw water filter is connected with an ultrafiltration membrane system (1-3);

the ultrafiltration membrane system (1-3) comprises N groups of ultrafiltration units (1-31), each group of ultrafiltration unit is arranged in each independent ultrafiltration pool (1-32), and each group of ultrafiltration unit consists of a plurality of ultrafiltration membranes (1-33) connected in parallel; the water production port of each group of ultrafiltration units is connected with a water production header pipe (1-34); the water production main pipe is connected with an ultrafiltration vacuum pump (1-35), the water outlet of the ultrafiltration vacuum pump is connected with a reverse osmosis membrane system (2-1) through a water inlet main pipe (3),

the reverse osmosis membrane system is arranged in the second armor box (2), and comprises a water inlet pipeline (2-11), a high-pressure pump (2-12), a reverse osmosis membrane (2-13), a water production pipeline (2-14) and a concentrated water pipeline (2-15); wherein the water production pipeline is also provided with unqualified water production discharge branches (2-16) in parallel; the concentrated water pipeline is also provided with a reverse osmosis flushing discharge branch (2-17) in parallel;

the first armor box is also internally provided with a compressed air unit (1-4) and an ultrafiltration backwashing unit (1-5);

the compressed air unit (1-4) comprises an air compressor (1-41), a pressure container (1-42) and a high-pressure main pipe (1-43) connected with the pressure container, a safety valve group (1-44) is mounted on the high-pressure main pipe, the water outlet of the safety valve group (1-44) is connected with a high-pressure air inlet main pipe (1-45), and the high-pressure air inlet main pipe is respectively connected with the super filter (1-32) through a high-pressure branch (1-46);

the ultrafiltration backwashing unit (1-5) comprises an ultrafiltration backwashing water tank (1-51), the water outlet of the ultrafiltration backwashing water tank (1-51) is connected with an ultrafiltration backwashing pump (1-52), the outlet of the ultrafiltration backwashing pump is connected with an ultrafiltration backwashing main pipe (1-53), and the ultrafiltration backwashing main pipe is connected with the ultrafiltration filter (1-32) through an ultrafiltration backwashing branch pipe (1-54);

the dosing device comprises a scale inhibitor dosing unit (1-60) and a reducing agent dosing unit (1-61) which are connected to the water inlet manifold (3),

more preferably, the raw water filter (1-2), the ultrafiltration vacuum pump (1-35), the ultrafiltration backwashing pump (1-52) and the reverse osmosis membrane system 2-1 are respectively provided with two groups.

In conclusion, the equipment is integrated into two independent containers by adopting the technical scheme, and the integrated design reduces the floor area of the traditional distributed equipment and is easy to manage and move on site; on the other hand, the maintenance and the production are more convenient, and the maintenance cost is further reduced; in addition, the immersed ultrafiltration membranes are respectively arranged in a plurality of ultrafiltration tanks to form a plurality of independent ultrafiltration units, so that the water yield of single backwashing of an ultrafiltration backwashing unit can be reduced, the volume of a backwashing water tank is reduced, the traditional conventional design that an ultrafiltration water production tank is used as a backwashing water tank is changed, the ultrafiltration water production tank has one-hour water yield, and the backwashing dosage is only equal to 1/30 of one-hour water yield; moreover, an ultrafiltration product water pump is used for providing primary power for reverse osmosis, and water is supplemented to an ultrafiltration backwashing water tank, so that the water passing pressure of an ultrafiltration product water tank, a reverse osmosis booster pump and a raw water filter is optimized, and normal and stable operation is ensured; meanwhile, the utility model also adds a reverse osmosis water production external supply pump, and supplies water according to the reverse osmosis water production pressure variable frequency, thereby canceling the traditional reverse osmosis water production tank and reducing the cost.

Drawings

FIG. 1 is a schematic view of the internal layout of a first armored box according to the present invention;

fig. 2 is a schematic view of the internal layout of the second armored box of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1 and 2, an integrated double-membrane desalination skid-mounted device for sewage treatment, which is an ultrafiltration membrane system and a reverse osmosis membrane system; the double-membrane desalination skid-mounted device comprises a first armor box 1 and a second armor box 2;

a raw water filter 1-1 connected with a raw water pipeline 1-2 is arranged in the first armored tank, and the raw water further flows into an ultrafiltration pool after removing impurities such as colloid particles, bacteria and the like in a water body before entering an ultrafiltration membrane system. The water outlet of the raw water filter is connected with an ultrafiltration membrane system 1-3; ultrafiltration membrane systems 1-3 are pressure driven membrane separation processes that are capable of separating particulate matter from fluids and dissolved components. The typical pore diameter of the ultrafiltration membrane is 0.01-0.1 micron, and the ultrafiltration membrane has extremely high removal rate on bacteria, most of germs, colloid, sludge and the like.

The ultrafiltration membrane system 1-3 comprises N groups of ultrafiltration units 1-31, each group of ultrafiltration units is arranged in each independent ultrafiltration pool 1-32, and each group of ultrafiltration units consists of a plurality of ultrafiltration membranes 1-33 connected in parallel; the water production port of each group of ultrafiltration units is connected with a water production main pipe 1-34; the water production main is connected with an ultrafiltration vacuum pump 1-35, and the water outlet of the ultrafiltration vacuum pump is connected with a reverse osmosis membrane system 2-1 through a water inlet main 3; the reverse osmosis membrane system is used for removing most inorganic salts and almost all organic matters, microorganisms and colloids in the absolute treatment water. The reverse osmosis membrane system is arranged in the second armor box 2 and comprises a water inlet pipeline 2-11, a high-pressure pump 2-12, a reverse osmosis membrane 2-13, a water production pipeline 2-14 and a concentrated water pipeline 2-15, the water production pipeline 2-14 is connected with a water production pool through an external supply pump 2-18, and the concentrated water pipeline 2-15 is connected with the concentrated water pool; the water production pipeline is also provided with unqualified water production discharge branches 2-16 in parallel; the concentrated water pipeline is also provided with reverse osmosis flushing discharge branches 2-17 in parallel;

the first armor box is also internally provided with compressed air units 1-4 for increasing the vibration and friction of ultrafiltration membrane filaments and enhancing the ultrafiltration backwashing effect; and the ultrafiltration backwashing units 1 to 5 are used for ultrafiltration, and are used for ultrafiltration during a period of normal operation, because the membrane filaments are continuously polluted and blocked, the water yield is reduced, the front and back pressure difference is increased, ultrafiltration backwashing is needed at the moment, and most of polluted and blocked pollutants are cleaned by matching with compressed air.

The compressed air unit 1-4 comprises an air compressor 1-41, a pressure container 1-42 and a high-pressure main pipe 1-43 connected with the pressure container, wherein a safety valve group 1-44 is mounted on the high-pressure main pipe, a water outlet of the safety valve group 1-44 is connected with a high-pressure air inlet main pipe 1-45, and the high-pressure air inlet main pipe is respectively connected with the super filter 1-32 through a high-pressure branch 1-46;

the ultrafiltration backwashing unit 1-5 comprises an ultrafiltration backwashing water tank 1-51, the water outlet of the ultrafiltration backwashing water tank 1-51 is connected with an ultrafiltration backwashing pump 1-52, the outlet of the ultrafiltration backwashing pump is connected with an ultrafiltration backwashing main pipe 1-53, and the ultrafiltration backwashing main pipe is connected with an ultrafiltration filter 1-32 through an ultrafiltration backwashing branch pipe 1-54;

in order to prolong the time of the reverse osmosis equipment within one operation period, corresponding essential agents are added in the operation process of the reverse osmosis system, different agent storage units are arranged according to different water samples to be treated, and agent adding devices 1-6 are also arranged in the second armor box; this embodiment for handling tertiary waste water, the sample water of ultrafiltration product water sets up a antisludging agent and adds the medicine unit, prevents that RO membrane element from when the selection from permeating fresh water, the solid matter that dissolves of its dense water side if: sulfate, carbonate, silica, and the like form scale on the RO membrane surface due to concentration. The other is a reducing agent dosing unit, and the reducing agent dosing unit has the following functions: preventing the reverse osmosis membrane element from gradually reducing the salt rejection rate due to the oxidant; specifically, the dosing device comprises scale inhibitor dosing units 1-60 and reducing agent dosing units 1-61 which are connected to the water inlet manifold 3.

More preferably, the raw water filter 1-2, the ultrafiltration vacuum pump 1-35, the ultrafiltration backwash pump 1-52 and the reverse osmosis membrane system 2-1 are provided in two sets. Therefore, two sets of designs are adopted, on one hand, the raw water treatment capacity can be improved, on the other hand, one set of raw water can be independently adopted for production, the other set of raw water is used for standby, when the maintenance and the overhaul are needed, one set of raw water is closed, the other set of raw water is opened for production, and the purpose of continuous production without stopping production is achieved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. An integrated double-membrane desalination skid-mounted device for sewage treatment is characterized by comprising a first armor box (1) and a second armor box (2);

a raw water filter (1-1) connected with a raw water pipeline is arranged in the first armored box, and a water outlet of the raw water filter is connected with an ultrafiltration membrane system (1-3);

the ultrafiltration membrane system (1-3) comprises N groups of ultrafiltration units (1-31), each group of ultrafiltration unit is arranged in each independent ultrafiltration pool (1-32), and each group of ultrafiltration unit consists of a plurality of ultrafiltration membranes (1-33) connected in parallel; the water production port of each group of ultrafiltration units is connected with a water production header pipe (1-34); the water production main is connected with an ultrafiltration vacuum pump (1-35), and the water outlet of the ultrafiltration vacuum pump is connected with a reverse osmosis membrane system (2-1) through a water inlet main (3); the reverse osmosis membrane system is arranged in the second armor box (2), and comprises a water inlet pipeline (2-11), a high-pressure pump (2-12), a reverse osmosis membrane (2-13), a water production pipeline (2-14) and a concentrated water pipeline (2-15); wherein the water production pipeline is also provided with unqualified water production discharge branches (2-16) in parallel; the concentrated water pipeline is also provided with a reverse osmosis flushing discharge branch (2-17) in parallel;

a dosing device (1-6) is also arranged in the second armor box; the dosing device comprises a scale inhibitor dosing unit (1-60) and a reducing agent dosing unit (1-61) which are connected to the water inlet manifold (3).

2. The integrated dual-membrane desalination skid-mounted device for sewage treatment of claim 1, wherein: the raw water filter (1-1), the ultrafiltration vacuum pump (1-35), the ultrafiltration backwashing pump (1-52) and the reverse osmosis membrane system (2-1) are respectively provided with two groups.