JP2006130367A5

JP2006130367A5 -

Info

Publication number: JP2006130367A5
Application number: JP2004319121A
Authority: JP
Filing date: 2004-11-02
Publication date: 2007-09-06

Description

上記課題を解決するために、本発明に係る、有機物含有水からの水の回収装置は、有機物含有水を生物処理する生物処理手段と、生物処理水をろ過するろ過手段と、ろ過水のｐＨをアルカリに調整するｐＨ調整手段と、アルカリに調整されたろ過水を透過させ透過水を得る逆浸透膜手段とを有することを特徴とするものからなる。このような回収装置においては、従来の回収装置に比べ工程数、とくに煩雑なｐＨ調整工程の回数低減できる。また、極度に汚染された有機物含有水から水を回収しようとする場合であっても適用できる。また、ＲＯ膜分離手段へ供給される水が適切に処理されるので、ＲＯ膜の閉塞や透過流束の低下を抑制でき、ＲＯ膜、ひいては回収装置全体の耐久性を向上できる。 In order to solve the above-mentioned problems, a device for recovering water from organic matter-containing water according to the present invention includes biological treatment means for biologically treating organic matter-containing water, filtration means for filtering biologically treated water, and pH of filtrate water. the consisting of those and having a pH adjusting means for adjusting the alkali, and a reverse osmosis membrane means for obtaining a permeate by transmitting the filtered water which has been adjusted to alkaline. In such a recovery apparatus, the number of processes, particularly the number of complicated pH adjustment processes, can be reduced as compared with the conventional recovery apparatus. Moreover, even if it is a case where it is going to collect | recover water from the organic matter containing water extremely polluted, it is applicable. In addition, since the water supplied to the RO membrane separation means is appropriately processed, the RO membrane can be prevented from being blocked and the permeation flux can be reduced, and the durability of the RO membrane and thus the entire recovery device can be improved.

有機物含有水からの水の回収装置６は、図２に示すように構成されている。排水配管５からの排水（有機物含有水）は、排水原水槽７に貯留される。排水原水槽７に貯留され他排水は、生物処理手段８において生物処理された後、第１中間槽９を介してろ過手段１０（砂ろ過塔）に供給される。ろ過手段１０によりろ過されたろ過水は、第２中間槽１１、活性炭塔１２を通過し、さらにｐＨ調整手段１３によりｐＨ調整された後、安全フィルタ１４を介してＲＯ膜手段１５に供給される。 The water recovery device 6 from the organic substance-containing water is configured as shown in FIG. Drainage (organic matter-containing water) from the drainage pipe 5 is stored in the drainage raw water tank 7. The other wastewater stored in the wastewater raw water tank 7 is biologically treated in the biological treatment means 8 and then supplied to the filtration means 10 (sand filtration tower) via the first intermediate tank 9. The filtered water filtered by the filtering means 10 passes through the second intermediate tank 11 and the activated carbon tower 12, is further pH-adjusted by the pH adjusting means 13, and then is supplied to the RO membrane means 15 via the safety filter 14. .

本発明に係る有機物含有水からの水の回収装置および回収方法は、有機物含有水から水を回収する回収装置として広範に適用可能であるが、とくに電子部品部材類製造工程排水からの純水の回収に好適なものである。
The apparatus and method for recovering water from organic substance-containing water according to the present invention can be widely applied as a recovery apparatus for recovering water from organic substance-containing water. It is suitable for recovery.

Claims

After biologically treating the organic substance-containing water, the pH of filtrate obtained by filtering the biologically treated water is adjusted to alkali, and then the permeated water obtained by passing the reverse osmosis membrane device is recovered as treated water. A method for recovering water from organic matter-containing water.

The method for recovering water from organic matter-containing water according to claim 1, wherein the filtration is sand filtration and / or activated carbon filtration.

The method for recovering water from organic matter-containing water according to claim 1 or 2, wherein an alkali is continuously added to the filtrate and the pH of the filtrate is adjusted to 9 or more.

The method for recovering water from organic-containing water according to claim 1 or 2, wherein an alkali is intermittently added to the filtrate to adjust the pH of the filtrate to 9 or more.

The method for recovering water from organic matter-containing water according to any one of claims 1 to 4, wherein drainage is used for the organic matter-containing water.

The method for recovering water from organic substance-containing water according to claim 5, wherein the waste water is waste water from an electronic component member manufacturing process.

The method for recovering water from organic matter-containing water according to any one of claims 1 to 6, wherein the total organic carbon contained in the organic matter-containing water is 10 mg / L or more.

Biological treatment means for biological treatment of organic substance-containing water, filtration means for filtering biological treatment water, pH adjustment means for adjusting the pH of filtered water to alkali, and filtered water adjusted to alkali is permeated to obtain permeated water. having a reverse osmosis membrane unit collecting device of water from the organic matter-containing water according to claim.

The apparatus for recovering water from organic matter-containing water according to claim 8, wherein the filtration means comprises either sand filtration means and / or activated carbon filtration means.

The apparatus for recovering water from organic matter-containing water according to claim 8 or 9, wherein the pH adjusting means comprises means for continuously adding alkali to filtered water and adjusting the pH to 9 or more.

The apparatus for recovering water from organic matter-containing water according to claim 8 or 9, wherein the pH adjusting means comprises means for intermittently adding alkali to filtered water and adjusting the pH to 9 or more.

The apparatus for recovering water from organic matter-containing water according to any one of claims 8 to 11, wherein the organic matter-containing water comprises waste water.

The apparatus for recovering water from organic matter-containing water according to claim 12, wherein the wastewater is wastewater from an electronic component member manufacturing process.

The apparatus for recovering water from organic matter-containing water according to any one of claims 8 to 13, wherein the total organic carbon contained in the organic matter-containing water is 10 mg / L or more.