JP3122652B2 - Water usage fee reduction method using cooling tower water quality improvement device - Google Patents
Water usage fee reduction method using cooling tower water quality improvement deviceInfo
- Publication number
- JP3122652B2 JP3122652B2 JP11097348A JP9734899A JP3122652B2 JP 3122652 B2 JP3122652 B2 JP 3122652B2 JP 11097348 A JP11097348 A JP 11097348A JP 9734899 A JP9734899 A JP 9734899A JP 3122652 B2 JP3122652 B2 JP 3122652B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- cooling tower
- amount
- usage
- bioceramics
- 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.)
- Expired - Fee Related
Links
Landscapes
- Water Treatment By Electricity Or Magnetism (AREA)
- Physical Water Treatments (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【発明の属する技術分野】この発明は、冷却塔への補給
水を供給する配管に接続することで、補給水の水質を改
善したり、冷却塔の維持コストを低減することができ
る、冷却塔の水質改善装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling tower capable of improving the quality of makeup water and reducing the maintenance cost of the cooling tower by connecting to a pipe for supplying makeup water to the cooling tower. Water quality improvement device.
【０００２】[0002]
【従来の技術】都会のビル等の大型建物の冷房設備のた
めに、ビル屋上等に設けられている冷却塔は、水を人工
的に蒸発させて、その時の気化熱を利用して冷房するも
のである。2. Description of the Related Art For cooling equipment for large buildings such as urban buildings, a cooling tower provided on the roof of a building or the like artificially evaporates water and uses the heat of vaporization at that time for cooling. Things.
【０００３】冷却塔は、図２に示すように、基本的に冷
却塔１に水を補給する補給水系１と循環冷却水系（図示
せず）の２つの水系から構成され、循環冷却水は熱交換
器と接触して熱交換器の熱を奪い、冷却塔内で熱い水を
飛散させて冷却し、冷却された水の大部分は、再び循環
冷却水となり熱交換器の熱を奪うようになっている。As shown in FIG. 2, the cooling tower is basically composed of two water systems, a makeup water system 1 for supplying water to the cooling tower 1 and a circulating cooling water system (not shown). In contact with the heat exchanger, the heat of the heat exchanger is taken away, hot water is scattered and cooled in the cooling tower, and most of the cooled water becomes circulating cooling water again, taking heat from the heat exchanger. Has become.
【０００４】また、循環冷却水の一部は飛散させた時に
水蒸気として蒸発するため、上水道から連なる補給水系
２より補給水管３を通じて蒸発した分の水を補給してい
る。[0004] Further, since a part of the circulating cooling water evaporates as water vapor when scattered, the evaporated water is replenished through a replenishing water pipe 3 from a replenishing water system 2 connected to a water supply.
【０００５】循環冷却水は、飛散させる際、空気との接
触等によってＮｏX、ＣＯX等の成分が溶け込んで塩分濃
度が高くなり（以下、濃縮という）、長期間使用された
場合、濃縮が更に進行し、そのままでは冷却塔内の設
備、配管に腐食発生、スケール発生、スライム発生等の
問題を生じさせる。[0005] circulating cooling water, when to be scattered, by contact or the like with air No X, salinity increases merges the components such as CO X (hereinafter, referred to as concentration), when it is used for a long time, is concentrated As it proceeds further, it causes problems such as corrosion, scale, and slime in equipment and piping in the cooling tower.
【０００６】そのため、一定間隔で通常の補給水管３と
は別に、ブロワー水管４を通じてブロワー水を塔内に大
量に導入することにより冷却塔内の冷却循環水の濃縮を
薄めたり冷却塔内を洗浄したりしていた。For this reason, a large amount of blower water is introduced into the tower through the blower water pipe 4 separately from the normal makeup water pipe 3 at regular intervals to reduce the concentration of the cooling circulating water in the cooling tower or to wash the inside of the cooling tower. I was doing.
【０００７】[0007]
【発明が解決しようとする課題】上記のように、循環冷
却水の蒸発分を補うためと、水質の汚れの濃縮を薄める
ために、補給水も大量に補給されるが、現在、上水道か
ら供給される補給水の全量は下水道に流される量として
すべて下水道使用量に換算されて料金を徴収されてい
る。As described above, a large amount of make-up water is supplied to compensate for the evaporation of the circulating cooling water and to reduce the concentration of dirt of water quality. The total amount of supplied make-up water is converted to the amount of sewerage used as sewerage and is charged.
【０００８】しかし、飛散させる際の循環冷却水は温度
が高いため蒸発する水も多く、補給水管３から供給され
る水は、現実には蒸発により失われた水の補給分として
使用され、下水道を使用することがないため、現在、下
水道を使用していないことを実証することで減免を受け
ることが可能になりつつある。However, since the circulating cooling water at the time of scattering is high in temperature, a large amount of water evaporates, and the water supplied from the supply water pipe 3 is actually used as a supply of water lost by evaporation, and Because it is not used, it is becoming possible to get exemption by demonstrating that the sewer is not used at present.
【０００９】また、循環冷却水として再利用されている
水は、溶存酸素の不足から酸化還元電位が腐食環境にな
り易く、この劣化した水は循環水の配管内や機器の腐
食、スケール、スライムを発生させるという問題が発生
するために、補給水に水の劣化を抑えるための薬剤を添
加するなどの水質管理が必要であった。Water reused as circulating cooling water tends to have a redox potential corrosive environment due to lack of dissolved oxygen, and this deteriorated water is corroded in piping of circulating water and equipment, scale, slime and the like. Therefore, water quality management, such as adding an agent for suppressing water deterioration to the makeup water, is required to cause the problem of generating water.
【００１０】しかし、各企業の工場は、国際環境規格Ｉ
ＳＯ１４００１を取得する方向にあり、これを取得する
には冷却塔などで使用している薬剤を止め、同時に排水
の水質を向上しないと、国際環境規格ＩＳＯ１４００１
取得は難しく、薬剤使用を止めて補給水やブロワー水を
通常より大量に流入させて、水質の安定を図る緊急処置
を講じている。However, the factories of each company are required to comply with international environmental standards I
In order to obtain SO14001, chemicals used in cooling towers and the like must be stopped in order to obtain it, and at the same time, if the quality of wastewater is not improved, the international environmental standard ISO14001 must be obtained.
Acquisition is difficult and the company is taking emergency measures to stabilize water quality by stopping the use of chemicals and allowing a larger amount of makeup water and blower water to flow in than usual.
【００１１】以上のように、補給水は現実には蒸発した
循環冷却水の補給のために使われており、下水道使用料
金が過負担になっていること、及び、ＩＳＯ１４００１
取得のために、大量の水が必要になっていること等、冷
却塔の維持コストは水道料金・下水道料金の面からして
も高コストとなりつつあった。As described above, make-up water is actually used to supply evaporated circulating cooling water, and the sewerage usage fee is overloaded, and
The maintenance cost of the cooling tower was becoming high in terms of water and sewerage charges, such as a large amount of water required for the acquisition.
【００１２】そこで、この発明の課題は、上記の点に鑑
み、冷却塔にかかるコストを低減することができる冷却
塔の水質改善装置を用いた水道使用料低減方法を提供す
ることを課題とする。In view of the above, it is an object of the present invention to provide a method for reducing a water usage fee using a cooling tower water quality improvement device capable of reducing the cost of a cooling tower. .
【００１３】[0013]
【課題を解決するための手段】上記のような課題を解決
するため、この発明は、上水道使用量と下水道使用量に
より料金を微収される水道水を利用する冷却塔におい
て、該冷却塔へ水を補給する補給水系の途中に、補給水
をバイオセラミックスに接触させる部分と、補給水の流
入水量の計測器とを有する冷却塔の水質改善装置を接続
し、補給水を浄化してブロワー水を無くすことによって
冷却塔で蒸発した水量のみを補給水系より補給し、計測
器により計測された該補給水の水量を上水道使用量から
差し引いた量を下水道使用量とする水道使用料低減方法
である。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a method for reducing the amount of water and sewerage used.
In a cooling tower that uses tap water, which will be charged less
In the middle of a makeup water system for supplying water to the cooling tower, a water quality improvement device for a cooling tower having a portion for bringing the makeup water into contact with the bioceramics and a measuring device for the amount of inflow of makeup water is connected, supplemented from only the replenishment water amount of water evaporated in the cooling tower by purifies eliminate blower water, the amount had <br/> feed pull from above water usage the amount of water該補water measured by the measuring instrument This is a method of reducing the amount of water service charges used as the amount of sewerage used .
【００１４】上記バイオセラミックスとしては、イオン
化による水質改善効果があるものであれば特に限定され
ないが、トリリン酸カルシウムを主成分とするバイオセ
ラミックスが水質改善効果の点から好ましい。The bioceramics are not particularly limited as long as they have an effect of improving water quality by ionization, but bioceramics containing calcium triphosphate as a main component are preferable from the viewpoint of water quality improving effect.
【００１５】本発明においては、冷却塔へ供給される上
水道の水をバイオセラミックスに接触させることで、水
質をマイナスイオン化させることにより、蒸発により失
われた循環水の補給にマイナスイオン水を導入すること
で、スライムを除去等の水質改善効果を発揮する。In the present invention, the water of the tap water supplied to the cooling tower is brought into contact with the bioceramics to deionize the water quality, thereby introducing negative ion water to replenish circulating water lost by evaporation. By doing so, it has the effect of improving water quality such as removing slime.
【００１６】具体的には、酸化還元ｐＨ調整、溶存酸素
のマイナスイオン化と飽和量の増加、イオン交換などの
機能を発揮し、循環水の嫌気性環境を好気性に変化さ
せ、水質を飲料水基準内に適合させ、しかも補給水の流
入回数を減らすことができる。Specifically, it exhibits functions such as redox pH adjustment, negative ionization of dissolved oxygen and an increase in the amount of saturation, and ion exchange, changes the anaerobic environment of circulating water to aerobic, and changes water quality to drinking water. It is possible to meet the standard and reduce the number of times of makeup water inflow.
【００１７】更に、このバイオセラミックスと接触通過
させる際にその水量を計測することで、蒸発分を下水使
用量から減免することができる。Further, by measuring the amount of water when the bioceramic is passed through in contact with the bioceramics, the amount of evaporation can be reduced from the amount of sewage used.
【００１８】[0018]
【発明の実施の形態】図１に示すように、冷却塔１の補
給水系２の経路途中に、水量計５、及びバイオセラミッ
クス接触槽６とが直列に接続された本発明の水質改善装
置をバイパス経路として接続し、補給水を当該パイパス
経路を通過させるようにする。なお、７は水道管バルブ
である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a water quality improvement device according to the present invention in which a water meter 5 and a bioceramics contact tank 6 are connected in series along the path of a makeup water system 2 of a cooling tower 1 is shown. It is connected as a bypass route so that makeup water passes through the bypass route. In addition, 7 is a water pipe valve.
【００１９】本発明において、水量計５は、補給水の水
量を計測することにより、下水道を使用しない蒸発水の
計算の際に考慮されることとなり、バイオセラミックス
接触槽６は、補給される水の水質を改善して冷却塔内の
水質を保ち、ブロー水を不要にすること等によりコスト
ダウンを行う役目を果たす。In the present invention, the water meter 5 measures the amount of make-up water to be taken into account in the calculation of evaporating water without using the sewerage system. The water quality of the cooling tower is improved by maintaining the water quality of the cooling tower, and the cost is reduced by eliminating the need for blow water.
【００２０】（下水道使用量減免部分）現在、冷却塔を
含めた工業用水は水道水を使用しているものと、工業用
水（河川水・地下水）を使用しているものに区分される
が、特に水道水使用の場合は、上水道の使用量をそのま
ま下水道使用量として換算されて徴収されているが、上
水道から供給される水の中には、使用中に蒸発したり、
散水したりして下水道を使用しない量があり、この量の
水使用量が下水道減免（減量）制度の適用を受けること
ができるが、冷却塔にてこの制度の適用を受ける場合に
は、蒸発部分を証明する装置が必要になる。At present, industrial water including cooling towers is divided into those using tap water and those using industrial water (river water / groundwater). Especially in the case of using tap water, the amount of water used is converted directly to the amount used for sewerage and collected, but some of the water supplied from the water supply evaporates during use,
There is an amount that does not use the sewer due to water sprinkling, and this amount of water usage can be applied to the sewerage reduction (reduction) system, but if this system is applied to the cooling tower, evaporation A device to prove the part is required.
【００２１】本発明では、冷却塔への補給水経路に導入
する経路に水量計５を設置しておくことで、蒸発した水
を補給するために上水道から補給される補給水を計量
し、下水道未流入分の実証用としての役目を果たす。According to the present invention, the water meter 5 is installed in the path for introducing the supply water to the cooling tower, so that the supply water supplied from the water supply in order to supply the evaporated water is measured, and the water supply is measured. It serves as a demonstration of the uninflow.
【００２２】（冷却循環水イオン化部分）冷却塔はブロ
ワー用と補給水用の流入口を備え循環水の蒸発は補給水
にて補給し、循環水の濃縮時はブロワー水にて水希釈す
るが、本発明品設置後に最初にセラミックス接触槽６に
てバイオセラミックス７（トリリン酸カルシウム主成
分）と接触してイオン化させた補給水を、ブロワー水管
４より冷却塔１内に導入することで、以下に示す効果を
奏するようになる。(Cooling and circulating water ionization part) The cooling tower is provided with inlets for the blower and make-up water, and the circulating water is replenished with the make-up water for evaporation and the water is diluted with the blower water when the circulating water is concentrated. First, after installation of the product of the present invention, make-up water which has been brought into contact with bioceramics 7 (mainly calcium triphosphate) in the ceramics contact tank 6 and ionized is introduced from the blower water pipe 4 into the cooling tower 1, whereby: The following effects are achieved.
【００２３】（１）冷却塔内の壁面や循環配管内のスケ
ール（カルシウム・シリカ）を、マイナスイオン化させ
た水に接触させる事で軟弱化させて、無数のキレツを発
生させて、循環水の水圧にて剥離させる。 （２）バイオセラミックス成分中の酸化チタンにて、溶
存酸素量を上げて酸化還元電位を＋側に大きく変革した
水を、配管や機器の腐食部に接触させることで、腐食部
をマグネタイトにし、腐食部分を改善する。 （３）循環水系内に増殖した嫌気性バクテリア（スライ
ム）を、マイナスイオン化した溶存酸素を飽和状態にす
る事で、好気性環境に変えて死滅させる。(1) The scale (calcium / silica) in the wall of the cooling tower or in the circulating pipe is softened by contacting it with negatively ionized water to generate innumerable cracks, and Peel off with water pressure. (2) The titanium oxide in the bioceramics component is used to increase the amount of dissolved oxygen to increase the oxidation-reduction potential to the + side, and the water is brought into contact with the corroded part of piping and equipment to make the corroded part magnetite. Improve corroded areas. (3) The anaerobic bacteria (slime) grown in the circulating water system are converted into an aerobic environment and killed by saturating dissolved ionized dissolved oxygen.
【００２４】上記の現象は、本発明品設置前後に、循環
水の水質分析を行なうことと、配管接続部の写真撮影で
効果の判別ができる。The effects of the above phenomenon can be determined by analyzing the water quality of the circulating water before and after the installation of the product of the present invention and by photographing the pipe connection.
【００２５】また、本発明品設置後のブロワー水によ
り、スケールや配管内の腐食、スライムを除去できる
が、本発明品のその後の継続使用により以下の効果を確
認することができる。Further, corrosion and slime in scales and pipes can be removed by the blower water after installation of the product of the present invention, but the following effects can be confirmed by subsequent use of the product of the present invention.
【００２６】（１）全硬度（ＴＨ）とｐＨ（水素イオン
濃度）の分析値推移によりスケールの溶解と凝縮沈殿効
果で激しい数値の上下動反復後に安定状態が継続するの
が判った。 （２）鉄（Ｆｅ）と亜鉛（Ｚｎ）の分析値により、腐食
状況と、黒錆化後の分析値０の継続により腐食部の鉄溶
解が止まり、効果を確認できる。 （３）水質分析の亜硝酸性窒素（Ｎｏ2）は嫌気性バク
テリアが生存中は分析値が小さく、死滅後に分解すると
数値が上昇し、さらに硝酸塩に分解すると０数値にな
り、すべて死滅したことを確認できる。(1) The transition of the analysis values of the total hardness (TH) and the pH (hydrogen ion concentration) showed that the stable state was maintained after repeated repetition of up-and-down movements due to severe dissolution and condensation and sedimentation effects. (2) From the analytical values of iron (Fe) and zinc (Zn), the dissolution of iron in the corroded portion is stopped by the corrosion state and the continuation of the analytical value 0 after black rusting, and the effect can be confirmed. (3) The analytical value of nitrite nitrogen (No 2 ) in water quality analysis was small during the life of anaerobic bacteria, increased when decomposed after death, and increased to 0 when decomposed to nitrate, and all died. Can be confirmed.
【００２７】上記の冷却循環水系内の問題点を解決する
ことにより、水質は水道飲料水基準値を維持し、濃縮状
態にならないために冷却塔の電気伝導率の設定を１５０
０にしても伝導率は１０００付近より上昇せずに、その
後のブロワー水の必要性は皆無になり、ブロワー水を不
要にすることによるコストダウンが図れる。By solving the above-mentioned problems in the cooling circulating water system, the water quality is maintained at the tap water standard value, and the electric conductivity of the cooling tower is set to 150 to prevent the water from becoming concentrated.
Even if it is set to 0, the conductivity does not rise from around 1000, and the necessity of the subsequent blower water is completely eliminated, and the cost can be reduced by eliminating the need for the blower water.
【００２８】次に、本発明品を設置した前後の冷却塔内
の目視状態を説明する。Next, the visual state inside the cooling tower before and after the installation of the product of the present invention will be described.
【００２９】（冷却塔内水槽の状態）冷却塔内では、本
発明品設置前に緑藻が多く赤茶けていた配管部分が、本
発明品設置後は次第にサラサラの状態で黒く変色し始
め、又、本発明品設置後に循環水が細化するために、水
槽内の水の反射率が向上して水面がキラキラと輝くよう
に変わった。(State of the water tank in the cooling tower) In the cooling tower, the piping portion, which had a lot of green algae and reddish brown before the installation of the present invention, gradually turned black in a smooth state after the installation of the present invention. Since the circulating water became thinner after the product of the present invention was installed, the reflectance of the water in the water tank was improved, and the water surface was changed to shine.
【００３０】（冷却塔内壁面の状態）本発明品設置前の
冷却塔内では、壁面全体に緑藻状スライムが繁殖し、湿
ったような状態になっており、また、薬剤処理のみで水
処理を実施していたが、薬剤は多機能効果が薄いため、
壁面にスライムやスケール削除の効果は無かった。(State of the inner wall of the cooling tower) In the cooling tower before installing the product of the present invention, green algae-like slime propagates on the entire wall and is in a wet state. However, because the drug has a weak multifunctional effect,
There was no slime or scale removal effect on the wall.
【００３１】一方、本発明品設置後は、全体に清掃を行
ったようにスライムが死滅し、スケール付着も見られな
い。これはバイオセラミックスによるイオン化が多機能
面に効果を発揮しているためである。On the other hand, after installation of the product of the present invention, the slime is killed as if the entire product was cleaned, and no scale adhesion was observed. This is because the ionization by bioceramics exerts an effect on a multifunctional surface.
【００３２】（循環冷却水配管部）本発明品設置前の配
管を外して、目視により管の内部表面を観察すると、緑
藻状スライムが覆い、腐食部は荒い錆びがネットリと盛
り上がり、全体に湿った状態であった。(Circulating Cooling Water Piping) When the pipe before installation of the product of the present invention is removed and the inner surface of the pipe is visually observed, the green algae-like slime is covered, and the corroded portion is rough and rusted up, and the whole is wet. It was in a state.
【００３３】本発明品を設置して暫くの期間経過後、再
び配管を外して内部を観察すると、緑藻状スライムが消
え、盛り上がった荒錆びが溶解して粘土状となってお
り、指で簡単に剥れ、その下は固い錆びが乾燥状態で現
れる。After a certain period of time after installing the product of the present invention, when the pipe is removed again and the inside is observed, the green algae-like slime disappears, and the raised rust dissolves into a clay-like form, which is easy to use with a finger. Rust, under which hard rust appears in a dry state.
【００３４】その後暫く経過後は、外した配管内は乾燥
状態で、荒錆びは皆無であり、鉄地肌の大部分が黒錆化
して固い皮膜状となっており、錆び水も全然出ないよう
になっていた。After a while, the inside of the removed pipe is in a dry state, there is no rough rust, most of the iron ground turns into black rust to form a hard film, and no rust water is generated. Had become.
【００３５】[0035]
【発明の効果】以上のように、本発明の水質改善装置を
冷却塔への補給水系に接続して用いれば、バイオセラミ
ックスとの接触により冷却塔へ供給される水の水質が改
善されてブロアー水や薬剤を不要にしたりしてコストダ
ウンを図れ、更に、メータ部分により冷却塔内で蒸発し
て下水道を使用しない水の量を算出することも可能とな
るので、冷却塔の維持コストを低減することができる。As described above, when the water quality improvement device of the present invention is connected to the makeup water system for the cooling tower and used, the quality of the water supplied to the cooling tower by contact with the bioceramics is improved and the blower is improved. Costs can be reduced by eliminating the need for water and chemicals.Furthermore, it is also possible to calculate the amount of water that evaporates in the cooling tower and does not use sewerage by means of the meter section, thereby reducing the cost of maintaining the cooling tower can do.
【図１】この発明の水質改善装置を用いた冷却塔の水系
を示す概略図である。FIG. 1 is a schematic diagram showing a water system of a cooling tower using a water quality improvement device of the present invention.
【図２】従来の冷却塔の水系を示す概略図である。FIG. 2 is a schematic diagram showing a water system of a conventional cooling tower.
１ 冷却塔 ２ 補給水系 ３ 補給水管 ４ ブロワー水管 ５ 水量計 ６ バイオセラミックス接触槽 ７ バルブ Reference Signs List 1 cooling tower 2 makeup water system 3 makeup water pipe 4 blower water pipe 5 water meter 6 bioceramic contact tank 7 valve
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平７−151491（ＪＰ，Ａ) 特開 平３−114598（ＪＰ，Ａ) 特開 平２−95493（ＪＰ，Ａ) 実開 平２−45380（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F28F 25/00 F28F 19/00 F28F 19/01 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-7-151491 (JP, A) JP-A-3-114598 (JP, A) JP-A-2-95493 (JP, A) Jpn. 45380 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) F28F 25/00 F28F 19/00 F28F 19/01
Claims (2)
を微収される水道水を利用する冷却塔において、該冷却
塔へ水を補給する補給水系の途中に、補給水をバイオセ
ラミックスに接触させる部分と、補給水の流入水量の計
測器とを有する冷却塔の水質改善装置を接続し、補給水
を浄化してブロワー水を無くすことによって冷却塔で蒸
発した水量のみを補給水系より補給し、計測器により計
測された該補給水の水量を上水道使用量から差し引いた
量を下水道使用量とする水道使用料低減方法。[1] Charge based on water usage and sewer usage
In a cooling tower using tap water that is slightly collected, in the middle of a make-up water system that supplies water to the cooling tower, a part that makes the make-up water contact the bioceramics, and a measuring instrument for the amount of inflow water of the make-up water connect the water quality improving apparatus of the cooling tower, to purify the makeup water supplemented from only the supply water evaporated water in the cooling tower by eliminating the blower water, top該補water supply amount of water measured by the measuring instrument water It had subtracted from the amount used
A method for reducing water usage fees, where the amount is sewerage usage .
オセラミックスが、トリリン酸カルシウムを主成分とす
るバイオセラミックスである請求項１記載の水道使用料
低減方法。2. The water usage fee according to claim 1, wherein the bioceramics used for the water quality improvement device of the cooling tower are bioceramics containing calcium triphosphate as a main component.
Reduction method .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11097348A JP3122652B2 (en) | 1999-04-05 | 1999-04-05 | Water usage fee reduction method using cooling tower water quality improvement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11097348A JP3122652B2 (en) | 1999-04-05 | 1999-04-05 | Water usage fee reduction method using cooling tower water quality improvement device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000292092A JP2000292092A (en) | 2000-10-20 |
| JP3122652B2 true JP3122652B2 (en) | 2001-01-09 |
Family
ID=14189988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11097348A Expired - Fee Related JP3122652B2 (en) | 1999-04-05 | 1999-04-05 | Water usage fee reduction method using cooling tower water quality improvement device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3122652B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4703000B2 (en) * | 2000-12-25 | 2011-06-15 | 株式会社ヨシハラ | Active water production apparatus, active water obtained thereby, and cooling tower scale and green alga adhesion prevention method using the active water |
| JP2004132592A (en) * | 2002-10-09 | 2004-04-30 | Denkai Giken:Kk | Electrochemical water treatment method and water treatment system |
| US9850154B2 (en) * | 2013-12-30 | 2017-12-26 | Ecolab Usa Inc. | Method of reducing industrial water use |
-
1999
- 1999-04-05 JP JP11097348A patent/JP3122652B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000292092A (en) | 2000-10-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Larson et al. | Laboratory studies relating mineral quality of water to corrosion of steel and cast iron | |
| Rahmani et al. | Evaluation of inhibitors and biocides on the corrosion, scaling and biofouling control of carbon steel and copper–nickel alloys in a power plant cooling water system | |
| Choudhury et al. | Corrosion management in power plant cooling systems using tertiary-treated municipal wastewater as makeup water | |
| Li et al. | Metal-release potential from iron corrosion scales under stagnant and active flow, and varying water quality conditions | |
| Alsaqqar et al. | Evaluating water stability indices from water treatment plants in Baghdad City | |
| Larson | Corrosion by domestic waters | |
| Liu et al. | Investigation of nitrogen and phosphorus contents in water in the tributaries of Danjiangkou Reservoir | |
| Goh et al. | Evaluation of the effect of dosage, pH and contact time on high-dose phosphate inhibition for copper corrosion control using response surface methodology (RSM) | |
| Costello | Postprecipitation in distribution systems | |
| Wang et al. | Hydroxyl carboxylate based non-phosphorus corrosion inhibition process for reclaimed water pipeline and downstream recirculating cooling water system | |
| Larson | Deterioration of water quality in distribution systems | |
| CN105084561A (en) | Non-phosphorus scale and corrosion inhibitor containing fulvic acid and preparation method thereof | |
| CN101117257A (en) | Dirty-proof inhibition composition for reclaimed water circulation sewage and preparation method and application | |
| JP3122652B2 (en) | Water usage fee reduction method using cooling tower water quality improvement device | |
| Dzombak et al. | Use of treated municipal wastewater as power plant cooling system makeup water: Tertiary treatment versus expanded chemical regimen for recirculating water quality management | |
| CN101823797A (en) | Environment-friendly multifunctional water treatment agent | |
| Larson | Chemical control of corrosion | |
| Choudhury et al. | Use of Shitalakhya River Water as makeup water in power plant cooling system | |
| Muylwyk et al. | Developing corrosion control for drinking water systems | |
| CN113943940B (en) | Complete set of transportation protection method for heating ventilation air conditioning water system | |
| Hem et al. | Water treatment to reduce internal corrosion in the drinking water distribution system in Oslo | |
| Murray | A corrosion inhibitor process for domestic water | |
| Benson | Evaluation of iron corrosion release models for water distribution systems | |
| Boffardi | Corrosion inhibitors in the water treatment industry | |
| Wang et al. | Evaluating the corrosiveness in drinking water distribution system in Yancheng City, China |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081020 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091020 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101020 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111020 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121020 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131020 Year of fee payment: 13 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |