JPS6339686A - Method for treating seawater - Google Patents
Method for treating seawaterInfo
- Publication number
- JPS6339686A JPS6339686A JP61184573A JP18457386A JPS6339686A JP S6339686 A JPS6339686 A JP S6339686A JP 61184573 A JP61184573 A JP 61184573A JP 18457386 A JP18457386 A JP 18457386A JP S6339686 A JPS6339686 A JP S6339686A
- Authority
- JP
- Japan
- Prior art keywords
- seawater
- tank
- reverse osmosis
- supplied
- gas
- 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
- 239000013535 sea water Substances 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000001914 filtration Methods 0.000 claims description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052717 sulfur Inorganic materials 0.000 abstract description 5
- 239000011593 sulfur Substances 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- 230000035755 proliferation Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 13
- 239000012528 membrane Substances 0.000 description 11
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 10
- 239000000460 chlorine Substances 0.000 description 10
- 229910052801 chlorine Inorganic materials 0.000 description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 244000005700 microbiome Species 0.000 description 6
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 3
- 230000001954 sterilising effect Effects 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 239000005708 Sodium hypochlorite Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000001603 reducing effect Effects 0.000 description 2
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000233866 Fungi Species 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000009849 vacuum degassing Methods 0.000 description 1
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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Abstract
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、海水の処理方法に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a seawater treatment method.
［従来の技術］
逆浸透法により海水又はかん水を淡水化する場合、従来
、第３図に示すシステムを用いて淡水化することが行わ
れている。即ち、まずポンプ１により海水を海水タンク
２に導入し、この海水を例えば２基のポンプ３ａ、３ｂ
により２つの濾過槽４ ａ ｓ ４ ｂに夫々供給する
と共に、濾過槽４ａｓ４ｂに供給する前の海水に凝集剤
としての例えばＦ ｅ Ｃ１０を添加する。この時、後
述する逆浸透装置の半透膜への微生物のスライムの付着
や膜自体への浸蝕を防止するために前記海水タンク２に
塩素（又は次亜塩素酸ソーダ）を注入して滅菌を行なっ
ている。つづいて、濾過槽４ａｓ４ｂで濾過された海水
にＨ２ＳＯ，を注入し、これを前処理海水タンク５に供
給する。ひきつづき、前処理海水タンク５の海水をポン
プ６によりカートリッジフィルタ７を通して真空ポンプ
により真空脱気された真空脱気装置８に供給する。次い
で、真空脱気後の海水を、ポンプ９及び高圧ポンプ１０
（こより逆浸透装置（東し社製商品名、ＰＥＣ−１００
０）１１に供給し、ここで逆浸透処理された脱塩水を脱
塩水・タンク１２に貯蔵する。前記逆浸透装置１１に使
用される半透膜としての高分子複合膜等は、供給海水中
に残留する塩素により酸化され易く、膜性能の劣化を招
くため、前記真空脱気装置８に供給される海水及び該真
空脱気装置８に還元剤としての例えば重亜硫酸ソーダ（
Ｎ ａ ＨＳ Ｏ３）を注入して塩素の除去を行なって
いる。[Prior Art] When seawater or brine is desalinated by reverse osmosis, a system shown in FIG. 3 has conventionally been used. That is, first, seawater is introduced into a seawater tank 2 by a pump 1, and then this seawater is pumped into, for example, two pumps 3a and 3b.
The seawater is supplied to the two filtration tanks 4as 4b, respectively, and a coagulant such as Fe C10, for example, is added to the seawater before being supplied to the filtration tanks 4as4b. At this time, chlorine (or sodium hypochlorite) is injected into the seawater tank 2 to sterilize it in order to prevent microbial slime from adhering to the semipermeable membrane of the reverse osmosis device, which will be described later, and from corroding the membrane itself. I am doing it. Subsequently, H2SO is injected into the seawater filtered in the filter tank 4as4b, and this is supplied to the pretreatment seawater tank 5. Subsequently, the seawater in the pretreated seawater tank 5 is supplied by a pump 6 through a cartridge filter 7 to a vacuum deaerator 8 where the seawater is vacuum degassed by a vacuum pump. Next, the seawater after vacuum degassing is pumped into a pump 9 and a high pressure pump 10.
(Koyori reverse osmosis equipment (product name manufactured by Toshisha, PEC-100)
0) 11, and the desalinated water that has been subjected to reverse osmosis treatment here is stored in the desalinated water tank 12. A polymer composite membrane or the like as a semipermeable membrane used in the reverse osmosis device 11 is easily oxidized by chlorine remaining in the supplied seawater, leading to deterioration of membrane performance. To the seawater and the vacuum deaerator 8, for example, sodium bisulfite (
Chlorine is removed by injecting Na HS O3).
［発明が解決しようとする問題点］
以上、従来の海水処理方法は滅菌のために海水タンク２
に塩素（又は次亜塩素酸ソーダ）を注入し、逆浸透装置
１１まで塩素を残留させ、系内での微生物の増殖を抑制
し、更に逆浸透装置１１の直前において塩素を除去する
ための還元剤（通常は重亜硫酸ソーダ）を注入している
。このように、一旦注入した塩素をまた除去する必要が
あり、操作の繁雑さや２種の薬液の使用によるランニン
グコストの高騰化を招く問題があった。[Problems to be solved by the invention] As described above, the conventional seawater treatment method uses a seawater tank 2 for sterilization.
chlorine (or sodium hypochlorite) is injected into the system, the chlorine remains up to the reverse osmosis device 11, suppresses the growth of microorganisms in the system, and further, immediately before the reverse osmosis device 11, a reduction process is performed to remove chlorine. agent (usually sodium bisulfite). In this way, it is necessary to remove the chlorine once injected, which poses a problem of complicated operations and an increase in running costs due to the use of two types of chemical solutions.
本発明は、上記従来の問題点を解決するためになされた
もので、簡単の操作でかつ低ランニングコストにて海水
を処理し得る方法を提供しようとするものである。The present invention has been made to solve the above-mentioned conventional problems, and aims to provide a method for treating seawater with simple operation and low running cost.
［問題点を解決するための手段］
本発明は、海水タンクに一旦貯蔵した海水を濾過した後
、前処理海水タンク、フィルタ及び逆浸透装置を通して
海水を処理する方法において、前記海水タンク及び前記
前処理海水タンクと逆浸透装置の間の配管系に夫々ＳＯ
２ガス又は亜硫酸水を注入せしめることを特徴とする海
水のα理方法である。[Means for Solving the Problems] The present invention provides a method for filtering seawater once stored in a seawater tank, and then treating the seawater through a pretreatment seawater tank, a filter, and a reverse osmosis device. SO in the piping system between the treated seawater tank and the reverse osmosis equipment.
This is a seawater treatment method characterized by injecting two gases or sulfite water.
［作用］
本発明によれば、海水タンク及び前記前処坤海水タンク
と逆浸透装置の間の配管系に夫々ＳＯ２ガス又は亜硫酸
水を注入することによって、海水のｐＨを６近傍まで下
げて、海水中の全類（微生物）の増殖を抑制でき、逆浸
透装置の半透膜への微生物のスライムとしての付着及び
膜自体の浸蝕を防止できる。また、Ｓ０２ガス又は亜硫
酸水は還元剤として作用するため、従来のように滅菌に
使用した塩素の還元の目的で重亜硫酸ソーダを注入する
という操作を解消できる。しかも、該Ｓ０２ガス又は亜
硫酸水の還元作用により海水中の溶存酸素を除去するこ
とができる。更に、Ｓ０２ガス又は亜硫酸水を海水タン
ク、及び前記前処理海水タンクと逆浸透装置の間の配管
系に夫々分けて注入することによって、多口の海水が貯
蔵される海水タンクのみにＳ０２ガス又は亜硫酸水を注
入する場合に比べて、少ないＳ０２ガス又は亜硫酸水の
注入で滅菌及び溶存酸素の除去を効率的に行なうことが
できる。[Function] According to the present invention, the pH of the seawater is lowered to around 6 by injecting SO2 gas or sulfite water into the seawater tank and the piping system between the pre-treated seawater tank and the reverse osmosis device, respectively. The growth of all types of microorganisms in seawater can be suppressed, and the adhesion of microorganisms as slime to the semipermeable membrane of a reverse osmosis device and the erosion of the membrane itself can be prevented. Furthermore, since S02 gas or sulfite water acts as a reducing agent, it is possible to eliminate the conventional operation of injecting sodium bisulfite for the purpose of reducing chlorine used for sterilization. Moreover, dissolved oxygen in seawater can be removed by the reducing action of the S02 gas or sulfite water. Furthermore, by separately injecting S02 gas or sulfurous acid water into the seawater tank and the piping system between the pretreated seawater tank and the reverse osmosis device, S02 gas or sulfurous acid water is injected only into the seawater tank where multiple ports of seawater are stored. Compared to the case where sulfite water is injected, sterilization and dissolved oxygen removal can be performed efficiently by injecting a smaller amount of S02 gas or sulfite water.
［発明の実施例コ 以下、本発明の実施例を第１図を参照して説明する。[Embodiments of the invention] Embodiments of the present invention will be described below with reference to FIG.
まず、ポンプ２１により海水を海水タンク２２に導入し
、この海水を２基のポンプ２３ａ、２３ｂにより２つの
濾過槽２４ａ、２４ｂに夫々供給すると共に、濾過槽２
４ａ、２４ｂに供給する前の海水に凝集剤としての例え
ばｌ；’ｅｃＪ！３を注入する。つづいて、前記ａ過槽
２４ａ、２４ｂで濾過された海水を前処理海水タンク２
５に供給した後、この海水をポンプ２６によりカートリ
ッジフィルタ２７及び高圧ポンプ２８を通して逆浸透装
置（例えば東し社製商品名、ＰＥＣ−１０００）２９に
供給し、ここで逆浸透処理された脱塩水を脱塩水タンク
３０に貯蔵する。こうした海水処理において、硫黄燃焼
炉３１に硫黄及び空気を供給してＳ０２ガスを生成した
後、このＳ０２ガスを前処理海水タンク２５出口側から
の海水が供給される吸収塔３２に供給し、生成した亜硫
酸水をタンク３３に溜め、ポンプ３６により亜硫酸水を
海水タンク２２内の海水に注入すると共に、前処理海水
タンク２５の出口側の海水に注入した。First, seawater is introduced into the seawater tank 22 by the pump 21, and this seawater is supplied to the two filter tanks 24a, 24b by the two pumps 23a, 23b, respectively.
For example, l;'ecJ! Inject 3. Subsequently, the seawater filtered by the a filter tanks 24a and 24b is transferred to the pretreatment seawater tank 2.
5, this seawater is supplied by a pump 26 through a cartridge filter 27 and a high-pressure pump 28 to a reverse osmosis device (for example, PEC-1000 manufactured by Toshi Co., Ltd.) 29, where the reverse osmosis-treated desalinated water is is stored in the desalinated water tank 30. In such seawater treatment, sulfur and air are supplied to the sulfur combustion furnace 31 to generate S02 gas, and then this S02 gas is supplied to the absorption tower 32 to which seawater from the outlet side of the pretreated seawater tank 25 is supplied, and the S02 gas is generated. The sulfurous acid water was stored in a tank 33, and the pump 36 injected the sulfurous acid water into the seawater in the seawater tank 22 and into the seawater on the outlet side of the pretreatment seawater tank 25.
上述した本実施例によれば、海水中の微生物の増殖を抑
制できると共に、海水中の溶存酸素を効果的に除去でき
、逆浸透装置２９の半透膜の浸蝕、膜性能の劣化を抑制
して該逆浸透装置２９の性能を長期間に亙って維持する
ことができた。なお、海水中の溶存酸素の除去及び微生
物の増殖抑制効果は以下に示す実験より確認した。According to the present embodiment described above, it is possible to suppress the growth of microorganisms in seawater, and also to effectively remove dissolved oxygen in seawater, suppressing corrosion of the semipermeable membrane of the reverse osmosis device 29 and deterioration of membrane performance. Therefore, the performance of the reverse osmosis device 29 could be maintained for a long period of time. The effect of removing dissolved oxygen in seawater and inhibiting the growth of microorganisms was confirmed through the experiment shown below.
東京溝から採取し、水温２０°Ｃの一定温度とした海水
に亜硫酸水をＳＯ２に換算して４０′Ｉ５１／ノ注入し
てｐＨ，溶存酸素Ｗ（Ｄｏ）及び酸化還元電位（ＯＲＰ
）の経時変化を調べたところ、第２図に示す結果を得た
。この第２図より明らかなように、亜硫酸水の注入後、
略同時にｐＨが約６．３程度に低下し、注入後約７分間
で溶存酸素を除去できた。Sulfurous acid water, converted to SO2, was injected into seawater collected from the Tokyo ditch and kept at a constant temperature of 20°C to determine pH, dissolved oxygen W (Do), and oxidation-reduction potential (ORP).
), the results shown in Figure 2 were obtained. As is clear from this figure 2, after injection of sulfite water,
At about the same time, the pH decreased to about 6.3, and dissolved oxygen could be removed in about 7 minutes after injection.
また、バクテリアの係数を、通常海域で使用するＺｏｂ
ｅｌｌ ２２１６ Ｅ培地を用いて行なった結果を下記
第１表及び第２表に示す。なお、第１表、第２表中の培
地基であるＺ／１０ＳＺ／１００は、夫々Ｚｏｂｅｌｌ
２２１６ Ｅ培地を１０倍、１００倍に希釈したもの
である。サンプル■は原潜水、サンプル■は原潜水に薬
剤（亜硫酸水）をＳ０２に換算して４０η／ノ注入した
もの、を夫々用いた。In addition, the coefficient of bacteria is
The results obtained using the ELL 2216 E medium are shown in Tables 1 and 2 below. In addition, Z/10SZ/100, which is a medium base in Tables 1 and 2, are respectively manufactured by Zobell.
2216E medium diluted 10 times and 100 times. Sample (2) used the original submerged water, and sample (2) used the original submerged water in which a chemical (sulfite water) was injected at a rate of 40η/no in terms of S02.
薬剤の処理時間は、１０分間とした。The treatment time for the drug was 10 minutes.
上記第１表及び第２表から明らかなように、サンプル■
、■ともそれ程、大きな差はないが、原海水に亜硫酸水
を注入したサンプル■はバクテリアの抑制効果を期待で
きる。As is clear from Tables 1 and 2 above, sample ■
There is not a big difference between samples 2 and 3, but sample 2, in which sulfite water is injected into raw seawater, can be expected to have a bacteria-inhibiting effect.
［発明の効果コ
以上詳述した如く、本発明によれば簡単な操作でかつ低
ランニングコストで海水中の微生物の増殖抑制と海水中
の溶存酸素の除去を行なうことができ、ひいては逆浸透
装置の半透膜等の浸蝕、膜性能の劣化を抑制して海水を
効果的に逆浸透処理（脱塩水処理）することが可能な塩
水の処理方法を提供できる。[Effects of the Invention] As detailed above, according to the present invention, it is possible to suppress the proliferation of microorganisms in seawater and remove dissolved oxygen in seawater with simple operation and low running cost, and as a result, reverse osmosis equipment can be used. It is possible to provide a salt water treatment method that can effectively perform reverse osmosis treatment (desalinated water treatment) of seawater while suppressing erosion of semipermeable membranes and deterioration of membrane performance.
第１図は本発明の実施例に用いた海水処理システムを示
す概略図、第２図は海水に亜硫酸水を注入した時のｐＨ
１溶存酸素ｆｆ１（ＤＯ）及び酸化還元電位（ＯＲＰ）
の経時変化を示す特性図、第３図は従来の海水処理シス
テムを示す概略図である。
２２・・・海水タンク、２４ａ、２４ｂ・・・濾過槽、
２５・・・前処理海水タンク、２７・・・カートリッジ
フィルタ、２９・・・逆浸透装置、３０・・・脱塩水タ
ンク、３１・・・硫黄燃焼炉、３２・・・吸収塔。
出願人代理人 弁理士 鈴江武彦
第１図
第２図
手続ネｍ正書６ｉ、９．１８
昭和 年 月 日
特許庁長官 黒 １）明 雄 殿
１、事件の表示
特願昭６１−１８４５７３号
２、発明の名称
海水の処理方法
３、補正をする者
事件との関係 特許出願人
（４１２） 日本ｍ管株式会社
４、代理人
東京都千代田区霞が関３丁目７番２号 ＵＳＥビル〒１
００ 電話０３ （５０２）３１８１ （大代表）゛
、（
（５８４７） 弁理士 鈴 江 武 彦。
５、自発補正
明細書、図面
７、補正の内容
（１）、明ｗＩ書の特許請求の範囲を別紙の如く訂正す
る。
（２）、明細書中箱２頁１行目において、「凝集剤とし
ての例えば」とあるを「凝集剤として例えば」と訂正す
る。
（３）明ｍ書中第２頁１３行目、第４頁１〜２行目、同
頁１０行目、同頁１９行目、第５頁１６〜１７行目、第
６頁１０行目、同頁１１行目、第９頁９行目及び第１０
頁１行目において、「逆浸透装置」とあるを「逆浸透モ
ジュール」と訂正する。
（４）、明細南中第２頁１３〜１４行目において、「（
東し社製商品名：ＰＥＣ−１０００）Ｊとあるを「（例
えば東し社製商品名： ＰＥＣ−１０００）Ｊと訂正す
る。
（５）、明ＩＲ丙中第３頁６行目において、「逆浸透装
置１１まで塩素を残留」とあるを「逆浸透モジュール１
１の前段まで塩素を残留」と訂正する。
（６）、明細自中第３頁１４行目において、［ｌ！！′
Ｉ単の操作」とあるを「簡単な操作」と訂正する。
（７）、明細書中筒４頁９行目において、「全類」とあ
るを「菌類」と訂正する。
（８）、明細書中筒６頁１行目において、「ガスを生成
した後」とあるを「ガスを生成させた後」と訂正する。
■）０図面の第２図を別紙の如く訂正する。
２、特許請求の範囲
海水タンクに一旦貯蔵した海水を通過した後、航α理海
水タンク、フィルタ及び逆浸透モジュール−を通して海
水を処理する方法において、前記海水タンク及び前記前
処理海水タンクと逆浸透ｉＺニールの間の配管系に夫々
８０２ガス又は亜硫酸水を注入せしめることを特徴とす
る海水の処理方法。Figure 1 is a schematic diagram showing the seawater treatment system used in the example of the present invention, and Figure 2 is the pH when sulfite water is injected into seawater.
1 Dissolved oxygen ff1 (DO) and redox potential (ORP)
FIG. 3 is a schematic diagram showing a conventional seawater treatment system. 22... seawater tank, 24a, 24b... filtration tank,
25... Pretreatment seawater tank, 27... Cartridge filter, 29... Reverse osmosis device, 30... Desalination water tank, 31... Sulfur combustion furnace, 32... Absorption tower. Applicant's Representative Patent Attorney Takehiko Suzue Figure 1 Figure 2 Procedures Manual 6i, 9.18 Showa Year Month Date Commissioner of the Patent Office Kuro 1) Akio Yu 1, Case Indication Patent Application No. 184573 No. 1988 2 , Name of the invention Seawater treatment method 3, Relationship with the person making the amendment Patent applicant (412) Japan M-Kan Co., Ltd. 4 Agent USE Building 3-7-2 Kasumigaseki, Chiyoda-ku, Tokyo 1
00 Telephone: 03 (502) 3181 (Main representative)゛, ((5847) Patent attorney Takehiko Suzue. 5. Spontaneous amended specification, drawing 7, content of amendment (1), scope of patent claims of Mei w I The correction is made as shown in the attached sheet. (2) In the first line of page 2 of the box in the specification, the phrase "for example as a flocculant" is corrected to "for example as a flocculant." (3) Section 2 in the specification Page 13, page 4, lines 1-2, page 4, line 10, page 19, page 5, lines 16-17, page 6, line 10, page 6, line 11, line 9 Page line 9 and 10
In the first line of the page, the phrase "reverse osmosis device" is corrected to "reverse osmosis module." (4), on page 2 of the specification, lines 13-14, “(
Toshisha product name: PEC-1000)J should be corrected as ``(For example, Toshisha product name: PEC-1000)J. "Chlorine remains up to reverse osmosis unit 11" is replaced with "reverse osmosis module 1.
Chlorine remains until the first stage of step 1.'' (6), on page 3, line 14 of the specification, [l! ! ′
Correct the phrase "simple operation" to "simple operation." (7) On page 4, line 9 of the specification, "all classes" is corrected to "fungi." (8) In the first line of page 6 of the specification, the phrase "after gas is generated" is corrected to "after gas is generated." ■) Correct Figure 2 of Drawing 0 as shown in the attached sheet. 2. Claims: A method of treating seawater through a seawater tank, a filter, and a reverse osmosis module after the seawater is stored in a seawater tank, passes through a seawater tank, a filter, and a reverse osmosis module. A seawater treatment method characterized by injecting 802 gas or sulfite water into the piping system between iZ Neil.
Claims (1)
水タンク、フィルタ及び逆浸透装置を通して海水を処理
する方法において、前記海水タンク及び前記前処理海水
タンクと逆浸透装置の間の配管系に夫々ＳＯ＿２ガス又
は亜硫酸水を注入せしめることを特徴とする海水の処理
方法。In a method of filtering seawater once stored in a seawater tank, and then treating the seawater through a pretreatment seawater tank, a filter, and a reverse osmosis device, each of the piping systems between the seawater tank and the pretreatment seawater tank and the reverse osmosis device includes: A seawater treatment method characterized by injecting SO_2 gas or sulfite water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61184573A JPS6339686A (en) | 1986-08-06 | 1986-08-06 | Method for treating seawater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61184573A JPS6339686A (en) | 1986-08-06 | 1986-08-06 | Method for treating seawater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6339686A true JPS6339686A (en) | 1988-02-20 |
Family
ID=16155570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61184573A Pending JPS6339686A (en) | 1986-08-06 | 1986-08-06 | Method for treating seawater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6339686A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2075234A1 (en) * | 2007-12-19 | 2009-07-01 | Shell Internationale Researchmaatschappij B.V. | A process for lowering the pH of a water stream |
| US20100018921A1 (en) * | 2007-08-20 | 2010-01-28 | Earth Renaissance Technologies, Llc | Reverse osmosis water recover method |
| US20100193436A1 (en) * | 2007-08-20 | 2010-08-05 | Earth Renaissance Technologies, Llc | Pre-treatment reverse osmosis water recovery method for brine retentate metals removal |
| KR20210123944A (en) * | 2020-04-06 | 2021-10-14 | 두산중공업 주식회사 | Reverse osmosis apparatus and seawater desalination system comprising the same |
| KR20210150120A (en) * | 2020-06-03 | 2021-12-10 | 두산중공업 주식회사 | Reverse osmosis apparatus and seawater desalination system comprising the same |
| KR20210150121A (en) * | 2020-06-03 | 2021-12-10 | 두산중공업 주식회사 | Reverse osmosis system and seawater desalination system comprising the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5474288A (en) * | 1977-11-02 | 1979-06-14 | Ibm | Electrolyte for electric color display apparatus |
| JPS5621604A (en) * | 1979-07-27 | 1981-02-28 | Toray Ind Inc | Separation of liquid by semipermeable composite membrane |
-
1986
- 1986-08-06 JP JP61184573A patent/JPS6339686A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5474288A (en) * | 1977-11-02 | 1979-06-14 | Ibm | Electrolyte for electric color display apparatus |
| JPS5621604A (en) * | 1979-07-27 | 1981-02-28 | Toray Ind Inc | Separation of liquid by semipermeable composite membrane |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100018921A1 (en) * | 2007-08-20 | 2010-01-28 | Earth Renaissance Technologies, Llc | Reverse osmosis water recover method |
| US20100193436A1 (en) * | 2007-08-20 | 2010-08-05 | Earth Renaissance Technologies, Llc | Pre-treatment reverse osmosis water recovery method for brine retentate metals removal |
| US8101083B2 (en) * | 2007-08-20 | 2012-01-24 | Earth Renaissance Technologies, Llc | Pre-treatment reverse osmosis water recovery method for brine retentate metals removal |
| US8236178B2 (en) | 2007-08-20 | 2012-08-07 | Earth Renaissance Technologies, Llc | Reverse osmosis water recover method |
| EP2075234A1 (en) * | 2007-12-19 | 2009-07-01 | Shell Internationale Researchmaatschappij B.V. | A process for lowering the pH of a water stream |
| KR20210123944A (en) * | 2020-04-06 | 2021-10-14 | 두산중공업 주식회사 | Reverse osmosis apparatus and seawater desalination system comprising the same |
| KR20210150120A (en) * | 2020-06-03 | 2021-12-10 | 두산중공업 주식회사 | Reverse osmosis apparatus and seawater desalination system comprising the same |
| KR20210150121A (en) * | 2020-06-03 | 2021-12-10 | 두산중공업 주식회사 | Reverse osmosis system and seawater desalination system comprising the same |
| US11498860B2 (en) | 2020-06-03 | 2022-11-15 | Doosan Enerbility Co., Ltd. | Reverse osmosis apparatus and seawater desalination system having the same |
| US11779884B2 (en) | 2020-06-03 | 2023-10-10 | Doosan Enerbility Co., Ltd. | Reverse osmosis system and seawater desalination system having the same |
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