CN211111345U - Energy-saving reverse osmosis equipment - Google Patents

Abstract

Energy-saving reverse osmosis equipment, including pretreatment area, security filter, raw water tank, primary reverse osmosis equipment, secondary reverse osmosis equipment, flushing water tank, concentrated water tank and pure water tank, the pretreatment area, security filter The water tank, the raw water tank, the primary reverse osmosis equipment, the secondary reverse osmosis equipment and the pure water tank are connected in sequence through water pipes, and the concentrated water outlet of the primary reverse osmosis equipment is provided with a first purification device. The water outlet is connected to the raw water tank, the concentrated water outlet of the first purification device is connected to a flushing water tank, the concentrated water outlet of the secondary reverse osmosis device is connected to the raw water tank, and the flushing water tank is connected to a pre-cleaning water tank. In the treatment area, a water outlet of the pretreatment area is connected to the concentrated water tank, the concentrated water tank is connected to the second purification device, and the water purification port of the second purification device is connected to the raw water tank. The utility model is suitable for various sewage treatment systems of different types, and the water saving effect is remarkable.

Description

Energy-saving reverse osmosis equipment

technical field

The utility model relates to the technical field of water treatment and purification equipment, in particular to an energy-saving reverse osmosis equipment.

Background technique

Reverse osmosis equipment uses membrane separation technology, which can effectively remove charged ions, inorganic substances, colloidal particles, bacteria and organic substances in water. It is the best equipment in high-purity water equipment, brackish water desalination and wastewater treatment processes.

However, in the actual application process, the reverse osmosis device generally adopts a two-stage installation method, that is, the concentrated water of the first stage reverse osmosis device enters the second stage reverse osmosis device for reprocessing, and the recovery rate of wastewater in the system is generally 75%. about. This also means that nearly a quarter of the raw water will be wasted in vain, so in the process of preparing pure water, a large amount of concentrated water must be discharged, which results in a great waste of water sources.

Therefore, in order to alleviate the increasingly serious shortage of water resources, it is very necessary to invent a water-saving reverse osmosis equipment.

Utility model content

In view of the deficiencies of the prior art, the utility model aims to provide an energy-saving reverse osmosis equipment suitable for various sewage treatment systems of large, medium and small, and with remarkable water-saving effect.

In order to achieve the above purpose, the utility model adopts the following technical scheme: energy-saving reverse osmosis equipment, including pretreatment area, security filter, raw water tank, primary reverse osmosis equipment, secondary reverse osmosis equipment, flushing water tank, concentrated water tank and the pure water tank, the pretreatment area, the security filter, the raw water tank, the primary reverse osmosis equipment, the secondary reverse osmosis equipment and the pure water tank are sequentially connected by water pipes, and the concentrated water outlet of the primary reverse osmosis equipment is set a first purification device, the purified water outlet of the first purification device is connected to the raw water tank, the concentrated water outlet of the first purification device is connected to the flushing water tank, and the concentrated water outlet of the secondary reverse osmosis equipment is connected to The raw water tank and the flushing water tank are connected to the pretreatment area, the pretreatment area is provided with a drain port and is connected to the concentrated water tank, the concentrated water tank is connected to the second purification device, and the second The water purification port of the purification device is connected to the raw water tank.

As a further improvement of the present utility model: the first purification device and the second purification device are both special filter elements for purification.

As a further improvement of the present utility model: the primary reverse osmosis equipment is provided with a primary high pressure pump and a primary reverse osmosis membrane, and the secondary reverse osmosis equipment is provided with a secondary high pressure pump and a secondary reverse osmosis membrane.

As a further improvement of the present invention: the pretreatment area includes a quartz sand filter and an activated carbon filter, the quartz sand filter is connected to the activated carbon filter, and the activated carbon filter is connected to the security filter.

As a further improvement of the present utility model: the purified water outlet of the first purification device is connected to the concentrated water outlet of the secondary reverse osmosis equipment, and the purified water purified by the first purification device is connected to the concentrated water of the secondary reverse osmosis equipment. At the concentrated water outlet of the secondary reverse osmosis equipment, they are mixed together into the raw water tank.

As a further improvement of the present utility model: a booster pump is arranged in the flushing water tank and the concentrated water tank.

As a further improvement of the utility model: a liquid level gauge is arranged in the concentrated water tank.

As a further improvement of the present utility model: the pure water tank is also provided with pipelines connected to the primary reverse osmosis equipment.

Beneficial technical effects of the present utility model: The present utility model recycles the concentrated water filtered by the primary osmosis equipment and the secondary osmotic equipment, and recycles the concentrated water in the pretreatment zone after recycling, and utilizes and recycles the part that was originally to be discharged. Concentrated water, the utilization rate of purified water after treatment reaches 90%, and the rest of the concentrated water is discharged by 10%, which improves the wastewater recovery rate of the system, and the equipment is simple to use, suitable for various large, medium and small sewage treatment systems, and conventional reverse osmosis systems. In comparison, the water saving effect is remarkable.

Description of drawings

Figure 1 is a schematic structural diagram of the utility model.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings. It should be noted that the present embodiment takes the technical solution as the premise, and provides a detailed implementation manner and a specific operation process, but the protection scope of the present invention does not limited to this embodiment.

Referring to Figure 1, the energy-saving reverse osmosis equipment includes pretreatment area, security filter, raw water tank, primary reverse osmosis equipment, secondary reverse osmosis equipment, flushing water tank, concentrated water tank and pure water tank. , security filter, raw water tank, primary reverse osmosis equipment, secondary reverse osmosis equipment and pure water tank are connected in sequence through water pipes, the concentrated water outlet of the primary reverse osmosis equipment is provided with a first purification device, and the purified water of the first purification device The outlet is connected to the raw water tank, the concentrated water outlet of the first purification device is connected to the flushing water tank, the concentrated water outlet of the secondary reverse osmosis equipment is connected to the raw water tank, the flushing water tank is connected to the pretreatment area, and the pretreatment area is set The water outlet is connected to the concentrated water tank, the concentrated water tank is connected to the second purification device, and the water purification port of the second purification device is connected to the raw water tank.

The primary reverse osmosis equipment is provided with a primary high pressure pump and a primary reverse osmosis membrane, and the secondary reverse osmosis equipment is provided with a secondary high pressure pump and a secondary reverse osmosis membrane; and the pure water tank is also provided with a pipeline connected to the primary reverse osmosis When the equipment is shut down, the concentrated water in the primary reverse osmosis can be replaced with pure water from the pure water tank to achieve the purpose of protecting the reverse osmosis membrane.

Implementation case one

In this embodiment, the pretreatment area includes a quartz sand filter and an activated carbon filter, the quartz sand filter is connected to the activated carbon filter, the activated carbon filter is connected to the security filter, the first purification device and the second The purification devices are all purification special filter elements set in the pipeline. The flowing water in the water pipe will be purified by the purification special filter element. The purified water outlet of the first purification device is connected to the concentrated water outlet of the secondary reverse osmosis equipment, so that the first purification The purified water purified by the device is mixed with the concentrated water of the secondary reverse osmosis equipment at the concentrated water outlet of the secondary reverse osmosis equipment and enters the raw water tank together. Both the flushing water tank and the concentrated water tank are provided with a booster pump, and the concentrated water tank is provided with a liquid level gauge.

working principle:

When the utility model is in use, the tap water is pretreated through a quartz sand filter and an activated carbon filter, and the tap water can effectively remove larger suspended particles and colloids in the water through the quartz sand filter, so that the turbidity of the effluent is less than 1 mg/l , to ensure the normal operation of subsequent reverse osmosis and other equipment, the adsorption of quartz sand filter is a kind of physical adsorption, according to the filling method of filter material can be roughly divided into loose area (coarse sand), tight area (fine sand), suspended matter Coagulation is produced by flow deactivation in the loose zone, so this zone retains larger suspended matter. In the compact area, inertial collision and adsorption between suspended particles are the main factors, so this area is to retain suspended substances of smaller particles. Activated carbon filter is a pressure filter device with activated carbon as filter material. It not only has the function of filtering suspended substances of ordinary filters, but also removes free residual chlorine, odor, chroma and Organic matter and other impurities.

After entering the security filter after exiting the pretreatment area, a certain amount of scale inhibitor can be added when entering the security filter. The security filter is a precision filter, and its working principle is to use the pores of the PP cotton filter element for mechanical filtration. Trace suspended particles, colloids, microorganisms, etc. remaining in the water are trapped or adsorbed on the surface of the filter element or in the voids, which have the advantages of high efficiency, low resistance and easy replacement.

After passing through the security filter, it enters the raw water tank. The water in the raw water tank can enter the primary reverse osmosis equipment, and then enter the primary reverse osmosis membrane after being pressurized by the primary high pressure pump. The water enters the secondary reverse osmosis equipment, and after being pressurized by the secondary high pressure pump, it enters the secondary reverse osmosis equipment for further purification, and the purified water produced by the secondary reverse osmosis equipment enters the purified water tank for storage and standby.

The concentrated water discharged from the primary reverse osmosis equipment relies on its own pressure to enter the special filter element for purification. The concentrated water discharged from the concentrated water outlet of the special filter element for purification enters the flushing water tank for storage. When cleaning is required in the pretreatment area, the water in the flushing water tank is pressurized by a booster pump and used as flushing water in the pretreatment area for flushing. After the area is flushed, the water discharged through the drain port enters the concentrated water tank for storage. When the liquid level of the concentrated water tank reaches the set height, the liquid level can be tested by the liquid level gauge. When the liquid level exceeds the predetermined value, the liquid level gauge is connected to the PLC The controller automatically turns on the booster pump. After the booster pump is pressurized, the purified water from the concentrated water tank passes through the special filter element for purification and enters the raw water tank for further use, so as to achieve the purpose of saving water.

The utility model can be widely used in schools, institutions and other units, the utilization rate of purified water after treatment can reach 90%, and the remaining part of the concentrated water is discharged by 10%, which improves the waste water recovery rate of the system, and the equipment is simple to use, and is suitable for large, medium and small Compared with conventional reverse osmosis systems, various sewage treatment systems have significant water-saving effects.

For those skilled in the art, various corresponding changes and deformations can be given according to the above technical solutions and ideas, and all these changes and deformations should be included within the protection scope of the claims of the present invention .

Claims (8)

1. Energy-saving reverse osmosis equipment, including preliminary treatment district, cartridge filter, former water pitcher, one-level reverse osmosis equipment, second grade reverse osmosis equipment, wash water pitcher, dense water jar and pure water jar, its characterized in that: pretreatment area, cartridge filter, former water pitcher, one-level reverse osmosis equipment, second grade reverse osmosis equipment and pure water tank connect gradually through the water pipe, the dense water export of one-level reverse osmosis equipment sets up first purifier, first purifier's water purification exit linkage is to former water pitcher, first purifier's dense water exit linkage washes the water pitcher, second grade reverse osmosis equipment's dense water exit linkage is to former water pitcher, it is connected to the pretreatment area to wash the water pitcher, the pretreatment area sets up the outlet connection and is to the dense water pitcher, the dense water pitcher is connected set up second purifier, second purifier's water purification mouth is connected to former water pitcher.

2. The energy efficient reverse osmosis apparatus of claim 1, wherein: and the first purification device and the second purification device are both special purification filter elements.

3. The energy efficient reverse osmosis apparatus of claim 1, wherein: the first-stage reverse osmosis equipment is provided with a first-stage high-pressure pump and a first-stage reverse osmosis membrane, and the second-stage reverse osmosis equipment is provided with a second-stage high-pressure pump and a second-stage reverse osmosis membrane.

4. The energy efficient reverse osmosis apparatus of claim 1, wherein: the pre-treatment zone includes a quartz sand filter and an activated carbon filter, the quartz sand filter being connected to the activated carbon filter, the activated carbon filter being connected to the cartridge filter.

5. The energy efficient reverse osmosis apparatus of claim 1, wherein: and the purified water of the first purification device and the concentrated water of the second-stage reverse osmosis equipment are mixed together at the concentrated water outlet of the second-stage reverse osmosis equipment and enter the raw water tank.

6. The energy efficient reverse osmosis apparatus of claim 1, wherein: the flushing water tank and the concentrated water tank are both provided with booster pumps.

7. The energy efficient reverse osmosis apparatus of claim 1, wherein: and a liquid level meter is arranged in the concentrated water tank.

8. The energy efficient reverse osmosis apparatus of claim 1, wherein: the pure water tank is also provided with a pipeline connected to the first-stage reverse osmosis equipment.

Images