Water treatment system

一种水处理系统、软水的技术，应用在水/污水处理、非污染水处理、水处理参数控制等方向，能够解决浓缩加剧、二氧化硅系水垢析出、无法抑制二氧化硅系水垢析出和污堵等问题，达到抑制污堵、抑制析出的效果

Inactive Publication Date: 2013-01-30
MIURA COMPANY LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Generally speaking, in hard water softening equipment, it is impossible to remove silica components and suspended substances contained in raw water
Therefore, on the primary side of the RO membrane, if the concentration of soft water increases, the precipitation of silica-based scale and fouling will easily occur.
That is to say, when soft water is supplied to the RO membrane, even if the precipitation of calcium carbonate-based scale can be suppressed, the precipitation of silica-based scale and the occurrence of fouling cannot be suppressed due to temperature changes.

Method used

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Embodiment approach １）

[0061] Next, the water treatment system 1 according to Embodiment 1 of the present invention will be described with reference to the drawings. The water treatment system 1 is, for example, a pure water production system suitable for producing pure water from fresh water. figure 1 is an overall configuration diagram of the water treatment system 1 according to the first embodiment. figure 2 It is a schematic cross-sectional view of the hard water softening device 3 . image 3 It is a flowchart of the process executed by the control unit 10 . 4( a ) and ( b ) are explanatory diagrams showing basic steps executed by the control unit 10 .

[0062] Such as figure 1 As shown, the water treatment system 1 according to Embodiment 1 includes a raw water pump 2 , a hard water softening device 3 , a brine tank 4 as regeneration liquid supply means, and a temperature sensor 5 as temperature detection means. Moreover, the water treatment system 1 further includes: a booster pump 6, a ...

Embodiment approach ２）

[0149] Next, for the water treatment system 1A according to Embodiment 2 of the present invention, refer to Figure 7 Be explained. Figure 7 It is an overall configuration diagram of a water treatment system 1A according to Embodiment 2. In Embodiment 2, differences from Embodiment 1 will be mainly described. In Embodiment 2, the same or equivalent configurations as those in Embodiment 1 will be described with the same reference numerals. In addition, in Embodiment 2, descriptions that overlap with Embodiment 1 are appropriately omitted.

[0150] Such as Figure 7 As shown, the water treatment system 1A according to Embodiment 2 includes: a raw water pump 2 , a hard water softening device 3 , a brine tank 4 , a temperature sensor 5 , a booster pump 6 , an inverter device 7 , and an RO membrane module 8 . In addition, the water treatment system 1A further includes a control unit 10A, a first drain valve 11 to a third drain valve 13 , a hardness sensor 14 as hardness detect...

Embodiment approach ３）

[0188] Next, for the water treatment system 1B according to Embodiment 3 of the present invention, refer to Figure 10 Be explained. Figure 10 It is an overall configuration diagram of a water treatment system 1B according to Embodiment 3. In Embodiment 3, differences from the first embodiment will be mainly described. In Embodiment 3, the same or equivalent configurations as those in Embodiment 1 and Embodiment 2 will be described with the same reference numerals. In addition, in Embodiment 3, descriptions that overlap with Embodiments 1 and 2 are appropriately omitted.

[0189] Such as Figure 10 As shown, the water treatment system 1B according to Embodiment 3 includes: a raw water pump 2 , a hard water softening device 3 , a brine tank 4 , a temperature sensor 5 , a booster pump 6 , an inverter device 7 , and an RO membrane module 8 . In addition, the water treatment system 1B further includes a control unit 10B, a first drain valve 11 to a third drain valve 13 , and ...

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Abstract

The invention provides a water treatment system. A fouling hard water softening apparatus includes: a membrane separation device and a water softening device including a valve unit switching between a softening process in which soft water is obtained by passing raw water through a cation exchange resin bed downward and a regeneration process in which a whole of the cation exchange resin bed is regenerated by generating an opposite flow of a regenerant by supplying the regenerant from both sides of a top portion and a bottom portion of the cation exchange resin bed and collecting a liquid at an intermediate portion of the cation exchange resin bed, and a regenerant supply supplying the regenerant in a volume which gives a regeneration level of 1 to 6 eq / L-R, to a hardness leakage prevention region set in a predetermined depth on the bottom portion of the cation exchange resin bed, in the regeneration process. The membrane separation device has an RO membrane assembly, a booster pump, a variable frequency device which outputs a driving frequency corresponding to the input current value to the booster pump, and a control portion which adopts physical quantity in the system to calculate the driving frequency of the booster pump in a method of enabling the flow of penetrated water to achieve a target flow value, and outputs the current value signal corresponding to the calculation value of the driving frequency to the variable frequency device.

Description

technical field [0001] The invention relates to a water treatment system comprising a hard water softening device and a membrane separation device. Background technique [0002] High-purity pure water free of impurities is required in semiconductor manufacturing processes, cleaning of electronic components, and cleaning of medical equipment. Such pure water is generally produced by treating raw water such as groundwater and tap water with a reverse osmosis membrane (hereinafter also referred to as "RO membrane"). [0003] When producing pure water through the RO membrane, the hardness components contained in the raw water will precipitate on the surface of the RO membrane to form scale. In addition, the so-called fouling phenomenon in which suspended matter contained in raw water (such as insoluble colloidal iron) deposits on the surface of the RO membrane and in the pores also occurs. If scale precipitation and fouling occur in the RO membrane, the water permeability (wat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F1/44C02F1/42
CPCC02F2209/003C02F2303/16C02F1/42C02F2209/40C02F1/008C02F2001/425C02F2103/04C02F2209/055C02F2209/03C02F2209/05C02F1/441C02F2209/02C02F2209/005B01D61/04B01D61/58C02F1/44
Inventor 真锅敦行渡边隼人
Owner MIURA COMPANY LIMITED
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