Spiral roll type electric desalted water treatment system and operation method

A treatment system, spiral coil technology, applied in multi-stage water treatment, water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of large floor space, unfavorable installation, unfavorable maintenance, etc., to save The effect of system piping and floor space, reducing scaling, improving salt rejection and working efficiency

Inactive Publication Date: 2020-04-14
ZHEJIANG CATHAYRIPE ENVIRONMENTAL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At the same time, the electric desalination equipment on the market is placed in a single way, which occupies a large area, which is not conducive to installation and later maintenance

Method used

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  • Spiral roll type electric desalted water treatment system and operation method
  • Spiral roll type electric desalted water treatment system and operation method
  • Spiral roll type electric desalted water treatment system and operation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0109] The total hardness of raw water is about 360mg / L, the total alkalinity is 100mg / L, and the conductivity is 2500us / cm. When the spiral-wound electric desalter is running, valves K1 and K4 at the water inlet are opened; K2 and K3 are closed; valves K5 and K8 at the water outlet are opened; K6 and K7 are closed. Adjust the flow rate of influent and concentrated water to 0.5m 3 / h, polar water flow 25L / h. Produced water and polar water are discharged directly, and concentrated water is circulated. After evacuating the air in the module, start the DC power supply and gradually increase the working voltage to 33V. At this time, the working current is 10A. Gradually increase the conductivity of the concentrated water inlet to 7000us / cm. After the system working condition is stable, switch electrode operation every 15 minutes. Specific steps are as follows:

[0110] Valve K5 is closed, K7 is opened, and the fresh water outlet is switched to the concentrated water tank.

...

Embodiment 2

[0118] The total hardness of raw water is about 360mg / L, the total alkalinity is 100mg / L, and the conductivity is 2500us / cm. When the spiral-wound electric desalter is running, valves K1 and K4 at the water inlet are opened; K2 and K3 are closed; valves K5 and K8 at the water outlet are opened; K6 and K7 are closed. Adjust the flow rate of influent and concentrated water to 0.5m 3 / h, polar water flow 25L / h. Produced water and polar water are discharged directly, and concentrated water is circulated. After evacuating the air in the module, start the DC power supply and gradually increase the working voltage to 33V. At this time, the working current is 10A. Gradually increase the conductivity of the concentrated water inlet to 7000us / cm. After the system working condition is stable, switch electrode operation every 20 minutes. Specific steps are as follows:

[0119] Valve K5 is closed, K7 is opened, and the fresh water outlet is switched to the concentrated water tank.

...

Embodiment 3

[0127] The total hardness of raw water is about 360mg / L, the total alkalinity is 100mg / L, and the conductivity is 2500us / cm. When the spiral-wound electric desalter is running, valves K1 and K4 at the water inlet are opened; K2 and K3 are closed; valves K5 and K8 at the water outlet are opened; K6 and K7 are closed. Adjust the flow rate of influent and concentrated water to 0.5m 3 / h, polar water flow 25L / h. Produced water and polar water are discharged directly, and concentrated water is circulated. After evacuating the air in the module, start the DC power supply and gradually increase the working voltage to 33V. At this time, the working current is 10A. Gradually increase the conductivity of the concentrated water inlet to 7000us / cm. After the system working condition is stable, switch electrode operation every 30 minutes. Specific steps are as follows:

[0128] Valve K5 is closed, K7 is opened, and the fresh water outlet is switched to the concentrated water tank.

...

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Abstract

The invention relates to a water treatment system, in particular to a spiral roll type electric desalted water treatment system. The system comprises a roll-type electrically-driven desalting device,the water inlet end of the desalting device is connected with a first water inlet valve and a fourth water inlet valve; the first water inlet valve is connected with a filter communicated with a raw water pump, the fourth water inlet valve is connected with a concentrated water tank communicated with a concentrated water pump; the water inlet end of the desalting device is also connected with a second water inlet valve and a third water inlet valve; one water outlet end of the desalting device is connected with a fifth water outlet valve and an eighth water outlet valve; the fifth water outletvalve is connected with a fresh water tank, the eighth water outlet valve is connected with a concentrated water tank; and a sixth water outlet valve and a seventh water outlet valve are further connected to one water outlet end of the desalting device. The roll-type electric drive desalination system can inhibit scaling at the concentrated water outlet end and improve the desalination rate.

Description

technical field [0001] The invention relates to a water treatment system, in particular to a spiral-wound electric desalination salt water treatment system and an operation method. Background technique [0002] With the shortage of fresh water resources and the increasingly serious environmental pollution in recent years, many countries in the world are facing a fresh water crisis. Water resources have become a strategic resource that restricts social and economic development and human living environment. As an emerging industry, desalination treatment has broad market development prospects and huge market space. [0003] In order to save water and realize the recycling of industrial wastewater, petrochemical enterprises desalinate and reuse the effluent from the membrane bioreactor, and use the fresh water as supplementary water for the open circulating cooling water system. When the concentration of chloride ion and sulfate in water is high, the corrosion of carbon steel ...

Claims

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Application Information

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IPC IPC(8): C02F1/469
CPCC02F1/4693C02F2301/08
Inventor 孙德虎杜汉桥汪震宇沈锦鹏
Owner ZHEJIANG CATHAYRIPE ENVIRONMENTAL ENG
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