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Device and method for reclaiming water from water with organic matter

A technology of organic matter and recycled water, applied in the direction of biological water/sewage treatment, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of RO membrane blocking permeation flux, many pH adjustment operations, and many processes, etc., to achieve Effects of suppressing clogging or decrease in flux, reducing the number of processes, and improving operating efficiency

Inactive Publication Date: 2009-12-02
ORGANO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the above-mentioned recovery method, the number of steps is large, and there are many complicated pH adjustment operations.
In addition, when the water to be treated after biological treatment is supplied to the RO membrane separation device, there is a problem that the RO membrane is clogged or the permeation flux is reduced.

Method used

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  • Device and method for reclaiming water from water with organic matter
  • Device and method for reclaiming water from water with organic matter
  • Device and method for reclaiming water from water with organic matter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048]pass figure 2 The shown apparatus treats electronic component member manufacturing process wastewater (water containing organic matter) of the water quality shown in Table 1 as raw water. At this time, the water supplied to the RO membrane device 15 was adjusted to pH=9 with NaOH. image 3 The temporal change of the treatment flux of the RO membrane in the RO membrane device 15 is shown.

Embodiment 2

[0050] pass figure 2 The shown apparatus treats electronic component member manufacturing process wastewater (water containing organic matter) of the water quality shown in Table 1 as raw water. At this time, the water supplied to the RO membrane device 15 was adjusted to pH=10 with NaOH. image 3 The temporal change of the treatment flux of the RO membrane in the RO membrane device 15 is shown.

Embodiment 3

[0052] pass figure 2 The shown apparatus treats electronic component member manufacturing process wastewater (water containing organic matter) of the water quality shown in Table 1 as raw water. At this time, the water supplied to the RO membrane device 15 was adjusted to pH=11 with NaOH. image 3 The temporal change of the treatment flux of the RO membrane in the RO membrane device 15 is shown.

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Abstract

PROBLEM TO BE SOLVED: To provide a highly durable apparatus for recovering water from organic matter-containing water which can prevent clogging of an RO membrane and deterioration of flux for a long time while reducing the number of troublesome pH adjustment processes, and a recovery method therefor. SOLUTION: In the apparatus and method for recovering water from organic matter-containing water, after biologically treating the organic matter-containing water, the pH of filtrate obtained by filtering the biologically treated water is adjusted to alkaline, and then permeate obtained by passing the filtrate trough a reverse osmosis membrane device is recovered as treated water.

Description

technical field [0001] The present invention relates to a device and method for recovering water from water containing organic matter using a reverse osmosis (hereinafter, sometimes abbreviated as RO) membrane device. A recovery device and a recovery method for recycling and reusing the water in the manufacturing process of electronic components and components from the manufacturing process wastewater of flat panel display equipment, electronic components or their manufacturing components or components, etc. Background technique [0002] At present, as a recovery method for recovering pure water from electronic component component manufacturing process wastewater, for example, there is a proposal to adjust the pH of semiconductor washing wastewater to 6-9, perform biological treatment and remove turbidity, and then adjust to pH 4-7. Use the first RO membrane separation device to remove NH contained in the feed water 4 + The ions contained in it or most of the organic matte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F1/44C02F3/00C02F1/66
CPCC02F1/28C02F1/441C02F3/00C02F2103/34
Inventor 川田和彦
Owner ORGANO CORP