Desalination system device capable of stably producing water

Abstract

The utility model provides a desalination system device capable of stably producing water, which belongs to the field of desalination and comprises a raw water tank, a conveying pipeline, a conveying pump, an ultrafiltration membrane component, an ultrafiltration water producing tank, a reverse osmosis membrane group and a reverse osmosis water producing tank. The ultrafiltration membrane assembly extends into the ultrafiltration water producing tank through a conveying pipeline, the reverse osmosis membrane assembly extends into the reverse osmosis water producing tank through a conveying pipeline, salt-containing wastewater is contained in the raw water tank, and the salt-containing wastewater enters the ultrafiltration water producing tank with heating and heat preservation functions after being pretreated by the ultrafiltration membrane assembly, and then enters the reverse osmosis water producing tank with heating and heat preservation functions. And then the wastewater enters a reverse osmosis membrane group for desalination treatment. According to the utility model, the ceramic ultrafiltration membrane of which the produced water is not influenced by the temperature is adopted, and the desalting stability operation of the desalting system device under the low-temperature condition can be realized only by carrying out heat preservation treatment on the reverse osmosis membrane, so that the water production stability of the desalting system is improved, and meanwhile, the energy consumption generated by heat preservation is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of desalination, in particular to a desalination system device with stable water production. Background Art

[0002] Salt-containing wastewater is often treated using a dual-membrane process combining "organic ultrafiltration membranes and reverse osmosis membranes." Organic ultrafiltration membranes are often made of organic hollow fiber membranes, primarily made of organic materials such as polyethersulfone (PES), polyvinylidene fluoride (PVDF), polyvinyl chloride (PVC), and polypropylene (PP). These membranes typically break after two years of operation, causing fouling and clogging of the reverse osmosis safety filter and reverse osmosis membrane assembly. Furthermore, the water output of organic ultrafiltration membranes fluctuates significantly with water temperature (water output decreases by >40% in winter). This is especially true in northern cities like Shandong, where outdoor temperatures drop below freezing in winter. Failure to properly store organic ultrafiltration membranes can easily lead to irreversible damage.

[0003] Compared to organic polymer membranes, inorganic ceramic membranes offer advantages such as superior chemical stability, high mechanical strength, narrow pore size distribution, high separation efficiency, long service life, and strong pollution resistance. Thanks to the stable physicochemical properties of ceramic membranes, their pore size and porosity vary minimally with water temperature, minimizing the impact of temperature fluctuations on produced water and ensuring sufficient low-temperature production capacity. Therefore, using ceramic ultrafiltration membranes instead of organic membranes can ensure operational stability in wastewater desalination systems in low-temperature regions. Utility Model Content

[0004] In view of the above problems, the purpose of the present invention is to design a desalination system device with stable water production to solve the problem of reduced water production of the desalination device under low temperature climate conditions.

[0005] The embodiment of the present invention provides a desalination system device with stable water production, comprising:

[0006] A raw water tank, a delivery pipeline, a delivery pump, an ultrafiltration membrane assembly, an ultrafiltration water production tank, a reverse osmosis membrane group, and a reverse osmosis water production tank. The raw water tank and the delivery pump are connected to the delivery pipeline. The ultrafiltration membrane assembly extends to the ultrafiltration water production tank through the delivery pipeline. The ultrafiltration water production tank is connected to the reverse osmosis membrane group through the delivery pipeline. The reverse osmosis membrane group extends to the reverse osmosis water production tank through the delivery pipeline. There is saline wastewater in the raw water tank. The saline wastewater is first pre-treated by the ultrafiltration membrane assembly and then enters the ultrafiltration water production tank with heating and insulation functions, and then enters the reverse osmosis membrane group for desalination treatment.

[0007] Furthermore, it also includes a reverse osmosis insulation chamber, and the ultrafiltration water production tank, reverse osmosis membrane group, and reverse osmosis water production tank are all located in the reverse osmosis insulation chamber.

[0008] Furthermore, a dosing device capable of adding medicine to the ultrafiltration water tank is installed in the reverse osmosis insulation chamber.

[0009] Furthermore, the ultrafiltration membrane assembly is a ceramic ultrafiltration membrane, which is made of inorganic materials such as aluminum oxide and silicon nitride, and has a pore size of 10-100 nanometers.

[0010] Furthermore, the ultrafiltration water production tank is composed of an inner lining, an electric heating wire and a heat-insulating material.

[0011] Furthermore, the lining material of the ultrafiltration water production tank can be stainless steel, plastic, fiberglass, or reinforced concrete.

[0012] Furthermore, the thermal insulation material may be polyurethane, silicate, quartz wool and foam ceramic.

[0013] Furthermore, it also includes a membrane cleaning device, which is connected to the ultrafiltration membrane assembly.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The utility model adopts a ceramic ultrafiltration membrane whose water production is not affected by temperature. It only needs to perform heat preservation treatment on the reverse osmosis membrane to achieve stable desalination operation of the desalination system device under low temperature conditions, thereby improving the water production stability of the desalination system and reducing the energy consumption caused by heat preservation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of the desalination system device of the utility model.

[0017] Figure 2 This is a structural diagram of the ultrafiltration water production tank of the utility model.

[0018] In the above drawings: 1 raw water tank, 2 delivery pipeline, 3 delivery pump, 4 ultrafiltration membrane assembly, 5 membrane cleaning device, 6 ultrafiltration water production tank, 7 reverse osmosis membrane group, 8 dosing device, 9 reverse osmosis water production tank, 10 reverse osmosis insulation chamber, 601 lining, 602 electric heating wire, 603 insulation material. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0020] like Figure 1-Figure 2 As shown, the embodiment of the utility model proposes a desalination system device with stable water production, including: a raw water tank 1, a delivery pipeline 2, a delivery pump 3, an ultrafiltration membrane assembly 4, an ultrafiltration water production tank 6, a reverse osmosis membrane group 7, and a reverse osmosis water production tank 9. The raw water tank 1 and the delivery pump 3 are connected to the delivery pipeline 2. Through the cooperation of the delivery pump 3 and the delivery pipeline 2, the salt-containing wastewater can be transported to the ultrafiltration membrane assembly 4.

[0021] The system further includes a membrane cleaning device 5, which is connected to the ultrafiltration membrane assembly 4. The membrane cleaning device 5 is connected to a delivery pump 3 via a delivery pipe 2. The delivery pump 3 can deliver the cleaning liquid in the membrane cleaning device 5 to the ultrafiltration membrane assembly 4 to flush the interior of the ultrafiltration membrane assembly 4. A sewage pipe is installed at the upper end of the ultrafiltration membrane assembly 4, and the sewage pipe extends into the raw water tank 1. The ultrafiltration membrane assembly 4 can be placed outside the reverse osmosis insulation chamber 10 without any insulation treatment.

[0022] Among them, the reverse osmosis system needs to be placed in the reverse osmosis insulation chamber 10 to ensure the temperature stability of the reverse osmosis system. It also includes the reverse osmosis insulation chamber 10. The ultrafiltration water production tank 6, the reverse osmosis membrane group 7, and the reverse osmosis water production tank 9 are all located in the reverse osmosis insulation chamber 10. Among them, the reverse osmosis insulation chamber 10 can be a polystyrene foam board, stainless steel board, polyurethane board or glass bead board with insulation function.

[0023] The ultrafiltration membrane assembly 4 extends through the delivery pipe 2 into the ultrafiltration water production tank 6, which is composed of an inner lining 601, an electric heating wire 602, and a thermal insulation material 603. The inner lining material of the ultrafiltration water production tank 6 can be stainless steel, plastic, fiberglass, or reinforced concrete. The thermal insulation material 603 can be polyurethane, silicate, quartz wool, or foam ceramic. The ultrafiltration water production tank 6 can stabilize the temperature of the ultrafiltration water production at 25-30°C. In this way, the ultrafiltration water production tank 6 with heating and insulation functions can heat the ultrafiltration water production to ensure the stability of the reverse osmosis inlet water temperature.

[0024] The ultrafiltration water production tank 6 is connected to the reverse osmosis membrane group 7 through the delivery pipe 2, and the delivery pump 3 is used to deliver the water therebetween; the reverse osmosis membrane group 7 extends through the delivery pipe 2 to the reverse osmosis water production tank 9. There is saline wastewater in the raw water tank 1. The saline wastewater is first pre-treated by the ultrafiltration membrane assembly 4, enters the ultrafiltration water production tank 6 with heating and insulation functions, and then enters the reverse osmosis membrane group 7 for desalination treatment.

[0025] Among them, a dosing device 8 capable of adding medicine to the ultrafiltration water production tank 6 is installed in the reverse osmosis insulation chamber 10; according to actual needs, medicine can be added to the ultrafiltration water production tank 6 through the dosing device 8. The dosing device 8 is composed of a medicine box, a delivery pump 3 and a delivery pipeline 2. The delivery pump 3 can deliver the medicine in the medicine box to the ultrafiltration water production tank 6 through the delivery pipeline 2.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A desalination system device with stable water production, characterized in that: include: A raw water tank (1), a delivery pipe (2), a delivery pump (3), an ultrafiltration membrane assembly (4), an ultrafiltration water production tank (6), a reverse osmosis membrane group (7), and a reverse osmosis water production tank (9); the raw water tank (1) and the delivery pump (3) are connected to the delivery pipe (2); the ultrafiltration membrane assembly (4) extends to the ultrafiltration water production tank (6) through the delivery pipe (2); the ultrafiltration water production tank (6) is connected to the reverse osmosis membrane group (7) through the delivery pipe (2); the reverse osmosis membrane group (7) extends to the reverse osmosis water production tank (9) through the delivery pipe (2); there is saline wastewater in the raw water tank (1); the saline wastewater is pretreated by the ultrafiltration membrane assembly (4) before entering the ultrafiltration water production tank (6) with a heating and heat preservation function, and then enters the reverse osmosis membrane group (7) for desalination treatment.

2. A desalination system device with stable water production according to claim 1, characterized in that: in: It also includes a reverse osmosis insulation chamber (10), wherein the ultrafiltration water production tank (6), the reverse osmosis membrane group (7), and the reverse osmosis water production tank (9) are all located in the reverse osmosis insulation chamber (10).

3. A desalination system device with stable water production according to claim 2, characterized in that: in: A dosing device (8) capable of adding drugs to the ultrafiltration water production tank (6) is installed in the reverse osmosis insulation chamber (10).

4. The desalination system with stable water production according to claim 1, characterized in that: in: The ultrafiltration water production tank (6) is composed of an inner lining (601), an electric heating wire (602) and a heat-insulating material (603).

5. A desalination system device with stable water production according to claim 4, characterized in that: in: The inner lining material of the ultrafiltration water production tank (6) can be stainless steel, plastic, glass fiber reinforced plastic, or reinforced concrete.

6. The desalination system device with stable water production according to claim 1, characterized in that: in: It also includes a membrane cleaning device (5), which is connected to the ultrafiltration membrane assembly (4).

Images