JPH0679272A - Device for production of pure water - Google Patents
Device for production of pure waterInfo
- Publication number
- JPH0679272A JPH0679272A JP4234720A JP23472092A JPH0679272A JP H0679272 A JPH0679272 A JP H0679272A JP 4234720 A JP4234720 A JP 4234720A JP 23472092 A JP23472092 A JP 23472092A JP H0679272 A JPH0679272 A JP H0679272A
- Authority
- JP
- Japan
- Prior art keywords
- water
- pure water
- membrane separation
- membrane
- tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は純水製造装置に係り、特
に、カン水や淡水或いはそれらを浄水処理した工業用水
や水道水などの用水を原水として、純度の高い純水を効
率的に製造する純水製造装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for producing pure water, and in particular, can use pure water of high purity as raw water, such as canned water, fresh water, industrial water obtained by purifying them, or tap water. The present invention relates to a pure water producing device.
【０００２】[0002]
【従来の技術】従来、カン水や淡水或いはそれらを浄水
処理した工業用水や水道水などの用水を原水として、逆
浸透（ＲＯ）膜分離処理により塩や溶存有機物を除去し
て純水を製造する方法が知られており、この方法は、半
導体の製造に使用する洗浄用超純水の製造プロセスの基
本的操作として多用されている。しかして、工業的なＲ
Ｏ膜分離処理に用いる膜モジュールとしては、スパイラ
ル形や中空糸形のものが使われている。2. Description of the Related Art Conventionally, pure water is produced by removing salt and dissolved organic substances by reverse osmosis (RO) membrane separation treatment using raw water such as canned water, fresh water or industrial water or tap water obtained by purifying them. Is known, and this method is often used as a basic operation of the manufacturing process of cleaning ultrapure water used for manufacturing semiconductors. And industrial R
As the membrane module used for the O membrane separation treatment, a spiral type or a hollow fiber type is used.
【０００３】ところで、これらの膜モジュールを長期
間、安定して使用するためには、膜モジュールの原水流
路を詰まらせないように、原水中の夾雑物や濁質を予め
取り除く必要がある。このため、ＲＯ膜分離装置の前処
理として、従来、凝集・沈殿（或いは加圧浮上）・濾過
処理が採用されている。By the way, in order to use these membrane modules stably for a long period of time, it is necessary to remove impurities and suspended matters in the raw water in advance so as not to block the raw water flow passage of the membrane module. Therefore, coagulation / precipitation (or pressure floating) / filtration treatment has been conventionally used as a pretreatment for the RO membrane separation device.
【０００４】このうち、濾過は除濁という重要な役割を
果たしており、スパイラル型や中空糸型膜モジュールの
前処理として必須のものであった。この濾過装置は、濾
過砂を充填した砂濾過が一般的であるが、この場合、濾
過砂の団塊（マッドボール）化による濾過性能の低下を
防止するために、塩素系殺菌剤の添加が実施されてい
る。Of these, filtration plays an important role of removing turbidity and was essential as a pretreatment for spiral type and hollow fiber type membrane modules. This filter is generally a sand filter filled with filter sand, but in this case, a chlorine-based bactericide is added to prevent the filter performance from deteriorating due to agglomeration of the filter sand (mud balls). Has been done.
【０００５】[0005]
【発明が解決しようとする課題】この塩素系殺菌剤の添
加により、濾過槽での生物の成育も抑制されるが、同時
に、生物易分解性の溶存有機物の生物分解も抑制され、
結果として、後段のＲＯ膜分離装置の溶存有機物の負荷
を高めることとなっていた。The addition of this chlorine-based bactericide suppresses the growth of organisms in the filter tank, but at the same time suppresses the biodegradation of easily biodegradable dissolved organic matter.
As a result, the load of dissolved organic matter in the RO membrane separation device in the latter stage was increased.
【０００６】本発明は上記従来の問題点を解決し、カン
水や淡水或いはそれらを浄水処理した工業用水や水道水
を原水として、ＲＯ膜分離装置により純水を製造するに
あたり、ＲＯ膜分離装置の溶存有機物負荷を低減し、高
純度の純水を容易かつ効率的に製造する純水製造装置を
提供することを目的とする。The present invention solves the above-mentioned conventional problems, and in producing pure water with an RO membrane separation device using raw water such as can water, fresh water, or industrial water or tap water obtained by purifying them, an RO membrane separation device It is an object of the present invention to provide a pure water production apparatus that reduces the dissolved organic matter load and easily and efficiently produces high-purity pure water.
【０００７】[0007]
【課題を解決するための手段】本発明の純水製造装置
は、用水が導入される生物処理槽と、該生物処理槽の処
理水が導入されるＲＯ膜分離装置とを備えてなる純水製
造装置であって、該ＲＯ膜分離装置は、集水管の外周に
波板形のスペーサを介してＲＯ膜を巻回したスパイラル
型膜モジュールを備えることを特徴とする。A pure water producing apparatus of the present invention is a pure water comprising a biological treatment tank into which water is introduced and an RO membrane separation device into which treated water of the biological treatment tank is introduced. The RO membrane separation device is a manufacturing apparatus, and is characterized by including a spiral membrane module in which an RO membrane is wound around an outer periphery of a water collection tube via a corrugated plate-shaped spacer.
【０００８】本発明の純水製造装置において、生物処理
槽は、原水中の生物易分解性の溶存有機物を生物分解す
るためのものであり、固定層、流動層など担体表面に微
生物を保持するものでも良いし、また、担体を用いずに
微生物を懸濁させて処理する方式のものでも良く、これ
らを組み合わせたものであっても良い。In the apparatus for producing pure water of the present invention, the biological treatment tank is for biodegrading easily biodegradable dissolved organic substances in raw water, and retains microorganisms on the surface of a carrier such as a fixed bed or a fluidized bed. The method may be one in which microorganisms are suspended and treated without using a carrier, or a combination thereof.
【０００９】このうち、固定層では、粒子径１ｍｍ以上
の濾材を用いるのが望ましい。また、繊維状の濾材を用
いるものでも良い。更に、濾過機能を有さず空隙率の高
い充填材を用いるものでも良い。Of these, it is desirable to use a filter medium having a particle diameter of 1 mm or more in the fixed layer. Alternatively, a fibrous filter medium may be used. Furthermore, a filler having no filtering function and high porosity may be used.
【００１０】また、流動層は、上記の濾材を懸濁、浮遊
させるために、原水供給ポンプないし、循環ポンプから
の出口配管を水槽の下部に導入し、上向流の流れを与え
るか、空気などのガスを水槽に導入して循環流を与える
ことにより形成することができる。In order to suspend and suspend the above filter medium, the fluidized bed introduces a raw water supply pump or an outlet pipe from a circulation pump into the lower part of the water tank to give an upward flow or an air flow. It can be formed by introducing a gas such as the above into a water tank to give a circulating flow.
【００１１】具体的には、原水中の溶存酸素量を補うた
めに、濾過塔の内部に空気導入手段を設けた高速生物濾
過塔、上向流式生物濾過塔、或いは、固定層式生物反応
槽、回転円板式生物反応槽等の固定層式生物反応槽、空
気の導入で撹拌する浮遊式生物反応槽或いは流動層式生
物反応槽等を採用することができる。Specifically, in order to supplement the amount of dissolved oxygen in the raw water, a high-speed biological filtration column having an air introduction means inside the filtration column, an upward flow biological filtration column, or a fixed-bed biological reaction. A fixed bed type biological reaction tank such as a tank or a rotating disk type biological reaction tank, a floating type biological reaction tank stirred by introduction of air, or a fluidized bed type biological reaction tank may be employed.
【００１２】一方、ＲＯ膜分離装置としては、特開昭６
４−４７４０４、同６４−５１１０５等に開示される集
水管の外周に波板形のスペーサ（以下「波板状スペー
サ」と称する。）を介してＲＯ膜を巻回したスパイラル
型膜モジュールを備えるものが用いられる。On the other hand, as an RO membrane separator, Japanese Patent Laid-Open No.
A spiral wound membrane module in which an RO membrane is wound around a water collecting pipe disclosed in 4-47404, 64-51105, etc. via a corrugated spacer (hereinafter referred to as "corrugated spacer") is provided. Things are used.
【００１３】このような波板状スペーサを有するスパイ
ラル型膜モジュールを備えるＲＯ膜分離装置であれば、
膜間流路が閉塞し難いため、生物処理槽の流出水を簡単
なスクリーン等の夾雑物除去手段を経るのみで通水する
ことができる。An RO membrane separation device provided with a spiral wound type membrane module having such a corrugated plate-like spacer is
Since it is difficult for the intermembrane passage to be closed, the outflow water of the biological treatment tank can be passed through only the foreign matter removing means such as a simple screen.
【００１４】なお、ＲＯ膜分離装置への給水系統には、
用いるＲＯ膜素材に応じて、酸化性又は還元性の滅菌剤
等の薬品注入設備を設けても良い。The water supply system to the RO membrane separator is
Depending on the RO membrane material used, a chemical injection facility such as an oxidizing or reducing sterilizing agent may be provided.
【００１５】また、ＲＯ膜分離装置では、一定量の濃縮
水を系外に排出させる必要があるが、本発明において
は、ＲＯ膜分離装置の濃縮水を前段の生物処理槽に返送
する循環配管を設けて処理することもできる。この場
合、生物処理槽が固定層式のものにあっては、ＲＯ膜分
離装置の濃縮水を固定層の逆洗に使用することができ、
処理系の水回収率を高めることができる。Further, in the RO membrane separation device, it is necessary to discharge a certain amount of concentrated water to the outside of the system, but in the present invention, the circulation pipe for returning the concentrated water of the RO membrane separation device to the biological treatment tank in the preceding stage. Can also be provided for processing. In this case, if the biological treatment tank is of a fixed bed type, the concentrated water of the RO membrane separator can be used for backwashing the fixed bed,
The water recovery rate of the treatment system can be increased.
【００１６】[0016]
【作用】本発明の純水製造装置においては、生物処理槽
では原水中の生物易分解性の溶存有機物の生物分解が促
進され、残存した生物難分解性の溶存有機物と微生物粒
子がＲＯ膜装置で除去される。即ち、ＲＯ膜では除去し
難い低分子の溶存有機物が生物処理槽で分解されて水と
微生物に置き変えられ、その後にこの微生物と高分子の
溶存有機物をＲＯ膜分離処理することができるので、同
じ性能のＲＯ膜を用いても溶存有機物の除去効果を高め
ることができる。In the pure water producing apparatus of the present invention, in the biological treatment tank, the biodegradation of easily biodegradable dissolved organic matter in the raw water is promoted, and the remaining hardly biodegradable dissolved organic matter and microbial particles remain in the RO membrane device. Will be removed. That is, the low molecular weight dissolved organic matter that is difficult to remove with the RO membrane is decomposed in the biological treatment tank and replaced with water and microorganisms, and thereafter, the microorganisms and polymeric dissolved organic matter can be subjected to RO membrane separation treatment. Even if an RO membrane having the same performance is used, the effect of removing dissolved organic substances can be enhanced.
【００１７】特に、本発明の純水製造装置においては、
ＲＯ膜分離装置として、波板状スペーサを有するスパイ
ラル型膜モジュールを用いるため、生物処理槽からの流
出水を濾過器などの除濁設備なしに簡単なスクリーン等
の夾雑物除去手段を経て直接供給することができる。Particularly, in the pure water producing apparatus of the present invention,
As the RO membrane separation device uses a spiral type membrane module having corrugated spacers, the effluent water from the biological treatment tank is directly supplied through a simple contaminant removal means such as a screen without a turbidity equipment such as a filter. can do.
【００１８】即ち、固定層式の生物処理槽を採用した場
合でも、生物処理槽からの流出水中には多量の微生物
（１０4 〜１０7 個／ｍＬ）が含まれており、このよう
な生物処理槽からの流出水を、通常のＲＯ膜分離装置に
通水すると、原水流路が微生物により詰まって短期間の
うちに使用に耐えられなくなる。また、薬品洗浄を実施
しても、微生物の詰まりを完全に取り去ることができ
ず、ＲＯ膜モジュールの交換を余儀なくされる。That is, even when a fixed bed type biological treatment tank is adopted, a large amount of microorganisms (10 4 to 10 7 cells / mL) are contained in the outflow water from the biological treatment tank. If the outflow water from the treatment tank is passed through a normal RO membrane separation device, the raw water flow path becomes clogged with microorganisms, and it becomes unusable within a short period of time. Further, even if chemical cleaning is performed, clogging of microorganisms cannot be completely removed, and the RO membrane module must be replaced.
【００１９】しかしながら、本発明で使用する波板状ス
ペーサを有するスパイラル型膜モジュールでは、流路の
閉塞が起こり難く、しかも、流出水中の微生物により汚
染された膜面を洗浄により容易に性能回復させることが
できる。また、通常のＲＯ膜モジュールでは採用するこ
とができないＲＯ膜の性能の回復効果を高めるための物
理洗浄を実施することもできる。なお、物理洗浄として
は、例えば、微細な繊維を懸濁させた洗浄液にて膜面の
付着物を擦り取る操作が有効である。However, in the spiral wound type membrane module having the corrugated plate-shaped spacer used in the present invention, the passage is unlikely to be blocked, and the performance of the membrane surface contaminated by the microorganisms in the outflow water is easily recovered by washing. be able to. In addition, physical cleaning can be performed to enhance the effect of recovering the performance of the RO membrane, which cannot be adopted in a normal RO membrane module. As the physical cleaning, for example, an operation of scraping off the adhered matter on the film surface with a cleaning liquid in which fine fibers are suspended is effective.
【００２０】[0020]
【実施例】以下、図面を参照して本発明の実施例につい
て詳細に説明する。Embodiments of the present invention will now be described in detail with reference to the drawings.
【００２１】図１，２は本発明の純水製造装置の一実施
例を示す系統図である。図中、１は原水槽、２は高速生
物濾過塔、３は調整槽、３Ａは貯留槽、４は凝集撹拌
槽、５はＲＯ膜分離装置、Ｐ1 ，Ｐ2 はポンプ、２Ａは
空気導入管、４Ａは撹拌機、１１〜２０は配管である。
図２に示す純水製造装置は図１に示す純水製造装置にお
いて、生物処理槽である高速生物濾過塔２とＲＯ膜分離
装置５との間に凝集処理手段としての凝集撹拌槽４を設
けた点が異なり、その他の同一機能を奏する部材には同
一符号を付してある。1 and 2 are system diagrams showing an embodiment of the pure water producing apparatus of the present invention. In the figure, 1 is a raw water tank, 2 is a high-speed biological filtration tower, 3 is an adjusting tank, 3A is a storage tank, 4 is a coagulation stirring tank, 5 is an RO membrane separation device, P 1 and P 2 are pumps, 2A is air introduction. Tubes, 4A are stirrers, 11 to 20 are pipes.
The pure water manufacturing apparatus shown in FIG. 2 is different from the pure water manufacturing apparatus shown in FIG. 1 in that a coagulation stirring tank 4 as coagulation processing means is provided between a high-speed biological filtration tower 2 which is a biological treatment tank and an RO membrane separation device 5. The difference is that the same reference numerals are given to other members having the same function.
【００２２】図１に示す純水製造装置においては、カン
水や淡水或いはそれらを浄水処理した工業用水や水道水
の原水は配管１１、原水槽１及びポンプＰ1 を有する配
管１２を経て高速生物濾過塔２に供給され、生物処理さ
れる。この生物処理により、原水中の生物易分解性の溶
存有機物が生物分解されて除去される。In the pure water producing apparatus shown in FIG. 1, raw water of canned water, fresh water, industrial water obtained by purifying them, or tap water passes through a pipe 11, a raw water tank 1 and a pipe 12 having a pump P 1 for high-speed living organisms. It is supplied to the filtration tower 2 and biologically treated. By this biological treatment, biodegradable dissolved organic matter in raw water is biodegraded and removed.
【００２３】高速生物濾過塔２の流出水は、配管１３よ
り調整槽３に送給され、この調整槽３にて配管１４より
Ｈ2 ＳＯ4 及び配管１５よりＮａＣｌＯが添加され、殺
菌処理された後、ポンプＰ2 を有する配管１６よりＲＯ
膜分離装置５に供給されて膜分離処理される。この膜分
離処理により、高速生物濾過塔２から流出した微生物や
水中に含有される高分子の溶存有機物が分離除去された
透過水は、処理水として配管１８より系外へ排出され、
次工程に設けられたイオン交換装置等を有する一次、二
次純水系へと導かれる。The outflow water from the high-speed biological filtration tower 2 was sent to the adjusting tank 3 through the pipe 13, and in this adjusting tank 3, H 2 SO 4 was added from the pipe 14 and NaClO was added from the pipe 15, and sterilized. Then, from the pipe 16 having the pump P 2 , RO
It is supplied to the membrane separation device 5 and subjected to membrane separation treatment. By this membrane separation treatment, the permeated water from which the microorganisms flowing out from the high-speed biological filtration tower 2 and the dissolved organic matter of the polymer contained in the water have been separated and removed is discharged from the system through the pipe 18 as treated water,
It is led to a primary and secondary pure water system having an ion exchange device and the like provided in the next step.
【００２４】一方、濃縮水は配管１７より抜き出される
が、この濃縮水は、前述の如く、高速生物濾過塔２に返
送して、濾過層の逆洗水として使用することができる。On the other hand, the concentrated water is withdrawn from the pipe 17, and the concentrated water can be returned to the high-speed biological filtration tower 2 and used as backwash water for the filtration layer as described above.
【００２５】図２に示す純水製造装置においては、高速
生物濾過塔２の流出水を配管１３、貯留槽３Ａ、配管１
９を経て凝集撹拌槽４に導入し、配管２０より、ＰＡＣ
（ポリ塩化アルミニウム）、Ｈ2 ＳＯ4 及びＮａＣｌＯ
を添加して、殺菌及び凝集処理した後ポンプＰ2 を有す
る配管１６よりＲＯ膜分離装置５に供給して膜分離処理
する。このように、膜分離処理に先立ち、凝集処理を行
なうことにより、膜分離効率をより一層高めることがで
きる。In the pure water producing apparatus shown in FIG. 2, the water discharged from the high-speed biological filtration tower 2 is pipe 13, storage tank 3A, and pipe 1
It is introduced into the coagulation / agitation tank 4 via 9 and the PAC
(Polyaluminum chloride), H 2 SO 4 and NaClO
Is added, sterilized and coagulated, and then supplied to the RO membrane separation device 5 through the pipe 16 having the pump P 2 for membrane separation treatment. In this way, by performing the aggregation treatment prior to the membrane separation treatment, the membrane separation efficiency can be further enhanced.
【００２６】以下に実験例を挙げて、本発明をより具体
的に説明する。Hereinafter, the present invention will be described more specifically with reference to experimental examples.
【００２７】実験例１ 下記水質の水道水を原水として、図１に示す純水製造装
置により、純水の製造を行なった。Experimental Example 1 Pure water was produced by using the pure water producing apparatus shown in FIG. 1 with tap water having the following water quality as raw water.
【００２８】原水水質 ｐＨ：７．８ 濁度：０．１以下 ＴＯＣ：６７０μｇ／ｌ 導電率：１７０μｓ／ｃｍ ＴＤＳ：１２０ｍｇ／ｌ なお、高速生物濾過塔及びＲＯ膜分離装置の仕様並びに
処理条件は次の通りとした。 Raw Water Water Quality pH: 7.8 Turbidity: 0.1 or less TOC: 670 μg / l Conductivity: 170 μs / cm TDS: 120 mg / l The specifications and treatment conditions of the high-speed biological filtration tower and RO membrane separation device are It was as follows.
【００２９】高速生物濾過塔 充填材：平均径＝１．１３の珪砂（均等係数＝１．４
５） 充填高さ：２ｍＲＯ膜分離装置 直径：φ４インチのスパイラル型膜モジュール（波板状
スペーサー） 膜材質：酢酸セルロース処理条件 高速生物濾過塔通水速度：１９２ｍ／日 ＲＯの平均操作圧：１０ｋｇｆ／ｃｍ2 ＲＯの回収率：７５％ 得られた処理水（純水）の水質を表２に示す。 High-speed biological filtration tower packing material: silica sand having an average diameter of 1.13 (uniformity coefficient = 1.4
5) Packing height: 2 m RO membrane separation device Diameter: φ4 inch spiral type membrane module (corrugated plate spacer) Membrane material: Cellulose acetate treatment conditions High-speed biological filtration tower water flow rate: 192 m / day RO average operating pressure: Recovery rate of 10 kgf / cm 2 RO: 75% Table 2 shows the water quality of the obtained treated water (pure water).
【００３０】実験例２ 実験例１で用いたと同様の原水を図２に示す純水製造装
置により処理して純水の製造を行なった。Experimental Example 2 Raw water similar to that used in Experimental Example 1 was treated by the pure water producing apparatus shown in FIG. 2 to produce pure water.
【００３１】なお、高速生物濾過塔及びＲＯ膜分離装置
の仕様は実験例１と同様とし、また、凝集撹拌槽の仕様
及び処理条件は次の通りとした。The specifications of the high-speed biological filtration tower and the RO membrane separation device were the same as in Experimental Example 1, and the specifications and treatment conditions of the coagulation stirring tank were as follows.
【００３２】凝集撹拌槽 タービン羽根付き撹拌槽（薬注設備付き）処理条件 滞留時間：５分 ポリ塩化アルミニウム添加量：１．５ｍｇ／ｌ（Ａｌ2
Ｏ3 として） 得られた処理水（純水）の水質を表２に示す。 Coagulation stirring tank Stirring tank with turbine blades (with chemical injection equipment) Treatment conditions Residence time: 5 minutes Addition amount of polyaluminum chloride: 1.5 mg / l (Al 2
O 3 As) obtained treated water quality of (pure water) are shown in Table 2.
【００３３】実験例３（比較例） 実験例１で用いたと同様の原水を、二層濾過器で濾過た
後ＲＯ膜分離装置で処理した。Experimental Example 3 (Comparative Example) Raw water similar to that used in Experimental Example 1 was filtered with a two-layer filter and then treated with an RO membrane separator.
【００３４】なお、各部の仕様及び処理条件は次の通り
とした。The specifications and processing conditions of each part are as follows.
【００３５】二層濾過器 充填濾材：下記表１の通り Two-layer filter packed filter media: as shown in Table 1 below.
【００３６】[0036]
【表１】 [Table 1]
【００３７】通水速度：１４４ｍ／日ＲＯ膜分離装置 直径：φ４インチのスパイラル型膜モジュール（波板状
スペーサー） 膜材質：酢酸セルロース 得られた処理水（純水）の水質を表２に示す。Water flow rate: 144 m / day RO membrane separator Diameter: φ4 inch spiral type membrane module (corrugated plate spacer) Membrane material: Cellulose acetate Table 2 shows the quality of the treated water (pure water) obtained. .
【００３８】[0038]
【表２】 [Table 2]
【００３９】表２より、本発明の純水製造装置によれ
ば、高純度の純水が得られることが明らかである。From Table 2, it is clear that the pure water producing apparatus of the present invention can obtain pure water of high purity.
【００４０】[0040]
【発明の効果】以上詳述した通り、本発明の純水製造装
置によれば、ＲＯ膜では除去し難い低分子の溶存有機物
が生物処理槽で分解されて水と微生物に置き変えられ、
その後、この微生物と高分子の溶存有機物をＲＯ膜分離
処理することができるので、著しく高い溶存有機物の除
去効率にて、高純度の純水を得ることが可能とされる。As described above in detail, according to the pure water producing apparatus of the present invention, low molecular weight dissolved organic substances which are difficult to remove by the RO membrane are decomposed in the biological treatment tank and replaced with water and microorganisms,
After that, since the microorganisms and the dissolved organic matter of the polymer can be subjected to the RO membrane separation treatment, it is possible to obtain high-purity pure water with a significantly high dissolved organic matter removal efficiency.
【００４１】しかも、ＲＯ膜分離装置の流路の閉塞が起
こり難く、生物処理槽の流出水は、濾過器などの除濁設
備なしに簡単なスクリーン等の夾雑物除去手段を経て直
接ＲＯ膜分離装置に供給することができるため、装置構
成の小型化、簡易化が達成され、その上、ＲＯ膜分離装
置の洗浄も容易かつ効率的に行なうことができる。Moreover, the flow path of the RO membrane separation device is unlikely to be blocked, and the effluent water of the biological treatment tank is directly subjected to the RO membrane separation through a contaminant removing means such as a simple screen without a turbidity equipment such as a filter. Since it can be supplied to the apparatus, the size and simplification of the apparatus configuration can be achieved, and the RO membrane separation apparatus can be easily and efficiently washed.
【００４２】このようなことから、本発明の純水製造装
置によれば、カン水や淡水或いはそれらを浄水処理した
工業用水や水道水を原水として、純度の高い純水を、容
易かつ効率的に、低コストにて製造することが可能とさ
れる。From the above, according to the pure water production apparatus of the present invention, pure water of high purity can be easily and efficiently used with raw water such as tap water, fresh water, or industrial water or tap water obtained by purifying them. In addition, it is possible to manufacture at low cost.
【図１】本発明の純水製造装置の一実施例を示す系統図
である。FIG. 1 is a system diagram showing an embodiment of a pure water producing apparatus of the present invention.
【図２】本発明の純水製造装置の他の実施例を示す系統
図である。FIG. 2 is a system diagram showing another embodiment of the pure water producing apparatus of the present invention.
１ 原水槽 ２ 高速生物濾過塔 ３ 調整槽 ４ 凝集撹拌槽 ５ ＲＯ膜分離装置 1 Raw water tank 2 High-speed biological filtration tower 3 Adjustment tank 4 Coagulation stirring tank 5 RO membrane separation device
───────────────────────────────────────────────────── フロントページの続き (72)発明者 河内 透 東京都新宿区西新宿３丁目４番７号 栗田 工業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Toru Kawauchi 3-4-7 Nishishinjuku, Shinjuku-ku, Tokyo Kurita Industry Co., Ltd.
Claims (1)
処理槽の処理水が導入される逆浸透膜分離装置とを備え
てなる純水製造装置であって、該逆浸透膜分離装置は、
集水管の外周に波板形のスペーサを介して逆浸透膜を巻
回したスパイラル型膜モジュールを備えることを特徴と
する純水製造装置。1. A pure water production apparatus comprising a biological treatment tank into which water is introduced and a reverse osmosis membrane separation device into which treated water of the biological treatment tank is introduced, said reverse osmosis membrane separation apparatus Is
A pure water production apparatus comprising a spiral wound type membrane module in which a reverse osmosis membrane is wound around a water collecting pipe via a corrugated plate-shaped spacer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4234720A JPH0679272A (en) | 1992-09-02 | 1992-09-02 | Device for production of pure water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4234720A JPH0679272A (en) | 1992-09-02 | 1992-09-02 | Device for production of pure water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0679272A true JPH0679272A (en) | 1994-03-22 |
Family
ID=16975322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4234720A Pending JPH0679272A (en) | 1992-09-02 | 1992-09-02 | Device for production of pure water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0679272A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09187785A (en) * | 1996-01-09 | 1997-07-22 | Kurita Water Ind Ltd | Recovery and purification device for drain |
| JP2000202481A (en) * | 1999-01-12 | 2000-07-25 | Kurita Water Ind Ltd | Toc component removing device at ultrapure water production device |
| JP2002159984A (en) * | 2000-11-27 | 2002-06-04 | Kurita Water Ind Ltd | Biodegradation method for toc component |
| JP2002336887A (en) * | 2001-05-11 | 2002-11-26 | Kurita Water Ind Ltd | Extrapure water making device and extrapure water making method |
| JP2002336886A (en) * | 2001-05-11 | 2002-11-26 | Kurita Water Ind Ltd | Extrapure water making device and extrapure water making method |
| JP2003190979A (en) * | 2001-10-18 | 2003-07-08 | Kurita Water Ind Ltd | Apparatus for manufacturing ultrapure water and method |
| JP2010099545A (en) * | 2008-10-21 | 2010-05-06 | Kurita Water Ind Ltd | Organic wastewater treatment method and apparatus |
| JP2011183274A (en) * | 2010-03-05 | 2011-09-22 | Kurita Water Ind Ltd | Water treatment method and process for producing ultrapure water |
| JP2013202548A (en) * | 2012-03-29 | 2013-10-07 | Swing Corp | Desalination device and desalination method |
| US8916048B2 (en) | 2010-03-05 | 2014-12-23 | Kurita Water Industries Ltd. | Water treatment method and method for producing ultrapure water |
| WO2017168721A1 (en) * | 2016-03-31 | 2017-10-05 | 三菱重工業株式会社 | Filtration layer cleaning method, biological membrane filtration apparatus, and desalination plant |
-
1992
- 1992-09-02 JP JP4234720A patent/JPH0679272A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09187785A (en) * | 1996-01-09 | 1997-07-22 | Kurita Water Ind Ltd | Recovery and purification device for drain |
| JP2000202481A (en) * | 1999-01-12 | 2000-07-25 | Kurita Water Ind Ltd | Toc component removing device at ultrapure water production device |
| JP4696326B2 (en) * | 1999-01-12 | 2011-06-08 | 栗田工業株式会社 | TOC component removal equipment in ultrapure water production equipment |
| JP2002159984A (en) * | 2000-11-27 | 2002-06-04 | Kurita Water Ind Ltd | Biodegradation method for toc component |
| JP2002336887A (en) * | 2001-05-11 | 2002-11-26 | Kurita Water Ind Ltd | Extrapure water making device and extrapure water making method |
| JP2002336886A (en) * | 2001-05-11 | 2002-11-26 | Kurita Water Ind Ltd | Extrapure water making device and extrapure water making method |
| JP2003190979A (en) * | 2001-10-18 | 2003-07-08 | Kurita Water Ind Ltd | Apparatus for manufacturing ultrapure water and method |
| JP2010099545A (en) * | 2008-10-21 | 2010-05-06 | Kurita Water Ind Ltd | Organic wastewater treatment method and apparatus |
| JP2011183274A (en) * | 2010-03-05 | 2011-09-22 | Kurita Water Ind Ltd | Water treatment method and process for producing ultrapure water |
| US8916048B2 (en) | 2010-03-05 | 2014-12-23 | Kurita Water Industries Ltd. | Water treatment method and method for producing ultrapure water |
| JP2013202548A (en) * | 2012-03-29 | 2013-10-07 | Swing Corp | Desalination device and desalination method |
| WO2017168721A1 (en) * | 2016-03-31 | 2017-10-05 | 三菱重工業株式会社 | Filtration layer cleaning method, biological membrane filtration apparatus, and desalination plant |
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