JP2002047936A - Cooling water treatment method and its device in apparatus and equipment having closed circulation cooling water system for diesel engine or the like using acid salt corrosion inhibitor - Google Patents
Cooling water treatment method and its device in apparatus and equipment having closed circulation cooling water system for diesel engine or the like using acid salt corrosion inhibitorInfo
- Publication number
- JP2002047936A JP2002047936A JP2000232187A JP2000232187A JP2002047936A JP 2002047936 A JP2002047936 A JP 2002047936A JP 2000232187 A JP2000232187 A JP 2000232187A JP 2000232187 A JP2000232187 A JP 2000232187A JP 2002047936 A JP2002047936 A JP 2002047936A
- Authority
- JP
- Japan
- Prior art keywords
- cooling water
- diesel engine
- equipment
- tank
- treatment
- 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.)
- Withdrawn
Links
Landscapes
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は亜硝酸塩系、重合リ
ン酸塩系、モリブデン酸塩系等の酸塩系腐食防止剤を添
加した冷却水を使用するディーゼル機関等の等の密閉循
環冷却水系を有する機器及び設備における冷却水処理方
法とその装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a closed circulation cooling water system for a diesel engine or the like using a cooling water to which an acid salt corrosion inhibitor such as a nitrite, a polymerized phosphate, or a molybdate is added. TECHNICAL FIELD The present invention relates to a method and apparatus for treating cooling water in equipment and facilities having the above.
【０００２】[0002]
【従来の技術】ディーゼル機関等を冷却するために冷却
水系統（シリンダライナ、シリンダカバー、排気弁、燃
料油噴射弁等を冷却する系統）を循環する冷却水には、
前記ディーゼル機関等の腐食防止のため、一般的に亜硝
酸塩系（亜硝酸ナトリウム、亜硝酸カリウム等）の腐食
防止剤が添加されている。2. Description of the Related Art Cooling water circulating through a cooling water system (a system for cooling a cylinder liner, a cylinder cover, an exhaust valve, a fuel oil injection valve, etc.) for cooling a diesel engine or the like includes:
In order to prevent the corrosion of the diesel engine and the like, a nitrite-based (sodium nitrite, potassium nitrite, etc.) corrosion inhibitor is generally added.
【０００３】前記ディーゼル機関等をオーバーホールす
る際には、前記冷却水をディーゼル機関等から抜き取っ
て行なう必要があるが、前記腐食防止剤が添加された前
記冷却水はＣＯＤ（化学的酸素供給量）が高く、またｐ
Ｈも高いため、排水規制のもと前記冷却水をそのまま排
水できないため、前記冷却水は希釈されてから排水され
る。また、一部排水規制が厳しい発電所等では、希釈処
理ではなく前記冷却水はイオン交換樹脂により処理され
排水されている。When overhauling the diesel engine or the like, it is necessary to extract the cooling water from the diesel engine or the like, and the cooling water to which the corrosion inhibitor is added is COD (chemical oxygen supply amount). Is high, and p
Since the H is also high, the cooling water cannot be drained as it is under drainage regulations, so the cooling water is diluted before being drained. Further, in a power plant or the like where the regulation of drainage is partly strict, the cooling water is treated by an ion exchange resin and discharged instead of a dilution treatment.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、前記し
たような高濃度のＣＯＤ及びｐＨである前記冷却水を排
水規制基準まで希釈して排水すると結果的には排水の量
が増加してしまい、よって自然環境による処理可能な排
水量を超えてしまうために水質汚染等の環境汚染を引き
起こしてしまいという問題があった。また、前述したよ
うなイオン交換樹脂による冷却水処理でも同じく、イオ
ン交換樹脂の再生時にさらに排水が発生するという問題
があった。However, if the cooling water having a high concentration of COD and pH as described above is diluted to the drainage regulation standard and drained, the amount of drainage increases as a result. There is a problem in that the amount of wastewater that can be processed by the natural environment is exceeded, causing environmental pollution such as water pollution. Further, in the cooling water treatment using the ion exchange resin as described above, similarly, there is a problem that wastewater is further generated during the regeneration of the ion exchange resin.
【０００５】さらに、イオン交換樹脂などを用いた冷却
水処理工程は、複数のラインや設備が必要であり、設備
が複雑で規模が大きくなってしまうという問題もあっ
た。さらにまた、一般的に前記ディーゼル機関等のオー
バーホールの際に抜き取った冷却水は、あまり汚れてい
なくても再利用せずに排水されてしまうため、不要な排
水が増えてしまうという問題点があった。Further, the cooling water treatment step using an ion exchange resin or the like requires a plurality of lines and equipment, and there is a problem that the equipment is complicated and the scale becomes large. Furthermore, the cooling water extracted during overhaul of the diesel engine or the like is generally drained without being reused even if it is not very dirty, and thus there is a problem that unnecessary drainage increases. Was.
【０００６】特に発電設備等においては多数のディーゼ
ル機関等を具えており、このような場合、前記冷却水を
回収するタンクに加えて前記冷却水を排水規制基準まで
希釈して排水するという事は希釈用の大型のタンクや廃
水処理用のタンクも更に別置せねばならず、その配置ス
ペースは極めて大スペース化する。In particular, a power generation facility or the like is equipped with a large number of diesel engines and the like. In such a case, it is difficult to discharge the cooling water in addition to a tank for recovering the cooling water to a dilution standard for drainage. A large tank for dilution and a tank for wastewater treatment must be additionally provided, and the arrangement space becomes extremely large.
【０００７】そこで、本発明は上記従来技術の問題点を
解決し、複雑な工程及び設備が不要で、容易にディーゼ
ル機関等ら回収された冷却水の再生及び排水処理が可能
に構成された好ましくは単一の回収槽(回収タンク)を用
いて、自然環境の保護のために必要以上に排水を発生さ
せないディーゼル機関等等の密閉循環冷却水系を有する
機器及び設備における冷却水処理方法とその装置を提供
することを目的とする。Therefore, the present invention solves the above-mentioned problems of the prior art, does not require complicated processes and equipment, and is preferably configured so that cooling water recovered from a diesel engine or the like can be easily regenerated and drained. Is a cooling water treatment method and equipment for equipment and facilities with a closed circulation cooling water system such as a diesel engine that does not generate wastewater more than necessary to protect the natural environment using a single recovery tank (recovery tank) The purpose is to provide.
【０００８】尚、ディーゼル機関の一次冷却水系は、間
接冷却水系の内の密閉循環式冷却水系に区分され、この
ような方式を採用している設備には、軸受け等の機器の
冷却水系、ビルや工場の冷温水系、反応釜や炉の冷却水
系、製鉄所内の炉体や熱風弁、羽口、ランス等の製鉄所
冷却系があり、これらの設備においてもディーゼル機関
と同様に本発明を円滑に適用できる。又防食剤において
も、ディーゼル機関に用いる亜硝酸塩系防食剤のみなら
ず、その用途に応じて重合リン酸塩系、モリブデン酸塩
系等の酸塩系腐食防止剤を使用する場合も本発明を円滑
に達成出来る。The primary cooling water system of a diesel engine is divided into a closed circulation cooling water system in the indirect cooling water system, and equipment employing such a system includes a cooling water system for equipment such as bearings, a building, and the like. And cooling water systems for factories and plants, cooling water systems for reactors and furnaces, and steelworks cooling systems such as furnace bodies and hot air valves, tuyeres, and lances in steelworks. Applicable to Further, in the case of using anticorrosives, not only nitrite anticorrosives used in diesel engines, but also polymerized phosphates and molybdates, etc. Can be achieved smoothly.
【０００９】[0009]
【課題を解決するための手段】本発明は、前記目的を達
成するため、請求項１記載の発明は、亜硝酸塩系の腐食
防止剤を使用するディーゼル機関等の密閉循環冷却水系
を有する機器及び設備(以下ディーゼル機関等という)に
おける冷却水処理方法において、オーバーホールその他
のディーゼル機関等運転停止時に、前記冷却水をディー
ゼル機関等から抜き取り、回収タンクへ導入して前記冷
却水の状態を水質測定し、該測定結果に基づいて、前記
冷却水が再利用不可能な場合は該冷却水に排水処理を施
して系外に排出し、一方前記冷却水が再利用可能な場合
は該冷却水に再生処理を施して前記ディーゼル機関等に
返送して再利用するとともに、前記排水処理と再生処理
がいずれも前記回収タンク内若しくは該タンクの循環経
路内で行われることを特徴とする。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an apparatus having a closed circulation cooling water system such as a diesel engine using a nitrite type corrosion inhibitor. In the cooling water treatment method in equipment (hereinafter referred to as a diesel engine or the like), when the operation of the overhaul or other diesel engine or the like is stopped, the cooling water is extracted from the diesel engine or the like, introduced into a recovery tank, and the state of the cooling water is measured. Based on the measurement result, if the cooling water cannot be reused, the cooling water is subjected to drainage treatment and discharged out of the system, while if the cooling water can be reused, regenerated to the cooling water. The wastewater is treated and returned to the diesel engine and reused, and both the wastewater treatment and the regeneration treatment are performed in the collection tank or the circulation path of the tank. The features.
【００１０】かかる発明によれば、前記排水処理と再生
処理がいずれも前記回収タンク内若しくは該タンクの循
環経路内で行われる為に、単一のタンクでの処理が可能
であるとともに、排水処理と再生処理を共用させて同一
の回収タンクで行うために、タンクの単一化とタンクの
必要最小のスペース化が可能である。According to this invention, since both the wastewater treatment and the regeneration treatment are performed in the collection tank or in the circulation path of the tank, the treatment can be performed in a single tank and the wastewater treatment can be performed. In addition, since the same recovery tank is used in common with the recovery processing, the tank can be unified and the space required for the tank can be minimized.
【００１１】請求項２記載の発明の要旨は、は前記排水
処理が、前記回収タンク内の前記冷却水に酸化処理剤を
必要量投入して、前記冷却水のＣＯＤ（化学的酸素要求
量）とともにｐＨ調整して前記冷却水中のＳＳ（浮遊物
質）を凝集させた後、前記タンクの循環経路に介在させ
てフィルタ手段を用いて前記冷却水から前記ＳＳを除去
する工程を含むことを特徴とする。かかる発明によれ
ば、前記循環経路を利用して最小スペースで効果的なＳ
Ｓ除去が可能である。[0011] The gist of the invention according to claim 2 is that in the wastewater treatment, a required amount of an oxidizing agent is added to the cooling water in the recovery tank, and COD (chemical oxygen demand) of the cooling water is supplied. And adjusting the pH together to aggregate the SS (floating substance) in the cooling water, and then removing the SS from the cooling water using a filter means through a circulation path of the tank. I do. According to this invention, the effective S in the minimum space using the circulation path is used.
S removal is possible.
【００１２】請求項３記載の発明は、前記排水処理にお
いてタンク内に循環経路を有さない場合は、前記回収タ
ンク内の冷却水に酸化処理剤を必要量投入することで、
前記冷却水のＣＯＤ（化学的酸素要求量）を低下させ、
該酸化処理剤投入に伴って前記冷却水のｐＨが低下して
前記冷却水中のＳＳ（浮遊物質）が凝集されて発生した
フロックを生成した後、タンク内の冷却水にｐＨ制御剤
を投入することで、前記冷却水を所定のｐＨレベルに調
整し、その後前記ｐＨ調整により一部崩壊したフロック
を、フィルタ手段を用いて捕捉することによりタンク内
での処理が可能である。According to a third aspect of the present invention, when the wastewater treatment does not have a circulation path in the tank, a required amount of an oxidizing agent is supplied to the cooling water in the recovery tank.
Reduce the COD (Chemical Oxygen Demand) of the cooling water,
After the pH of the cooling water decreases with the introduction of the oxidizing agent and flocs generated by agglomeration of SS (floating substances) in the cooling water are generated, a pH controller is injected into the cooling water in the tank. Thus, the cooling water is adjusted to a predetermined pH level, and then the floc that has partially collapsed due to the pH adjustment is captured using a filter means, thereby enabling processing in the tank.
【００１３】かかる実施例によれば、フロック形成後の
ＰＨ調整によりフロックの一部が破壊されるが、フィル
タの目の粗さを変えてやればフィルタリングには問題な
いことが理解できる。又フィルタ処理を最終工程とする
ことで、前記循環工程が不要になるという効果を有す
る。尚、フィルタの目は前者(ＰＨ調整の前にフロック
除去)が２５μｍ、後者が(ＰＨ調整の後にフロック除
去)が１０μｍで同等の効果が得られた。According to this embodiment, although a part of the floc is destroyed by the pH adjustment after the floc is formed, it can be understood that there is no problem in the filtering if the coarseness of the filter is changed. In addition, by making the filtering process the last step, there is an effect that the circulation step becomes unnecessary. In the case of the filter, the former (removal of floc before pH adjustment) was 25 μm, and the latter (removal of floc after PH adjustment) was 10 μm, and the same effect was obtained.
【００１４】請求項４記載の発明は、前記ＳＳを除去し
た後のタンク内の冷却水のｐＨレベルに調整して排水基
準を達成させた後、系外に排出させることを特徴とす
る。According to a fourth aspect of the present invention, the cooling water in the tank after the SS has been removed is adjusted to a pH level to achieve a drainage standard, and then discharged out of the system.
【００１５】かかる発明によれば、ＳＳ除去とｐＨレベ
ルに調整する工程を時間差をもって行うために同一のタ
ンクで排水基準の達成が容易である。According to this invention, since the SS removal and the step of adjusting the pH level are performed with a time difference, it is easy to achieve the drainage standard in the same tank.
【００１６】請求項５記載の発明は、前記再生処理にお
いて、前記回収タンク内の冷却水に腐食防止剤を注入し
て該冷却水の防腐食力を再生した後、前記ディーゼル機
関等に返送して再利用することを特徴とする。これによ
り冷却水の再利用が容易である。According to a fifth aspect of the present invention, in the regeneration treatment, a corrosion inhibitor is injected into the cooling water in the recovery tank to regenerate the anticorrosion power of the cooling water, and then returned to the diesel engine or the like. And reuse it. This facilitates reuse of the cooling water.
【００１７】請求項６記載の発明は、前記請求項１記載
の発明を効果的に実施する装置に関する発明で、亜硝酸
塩系の腐食防止剤を使用するディーゼル機関等の密閉循
環冷却水系を有する機器及び設備(以下ディーゼル機関
等という)における冷却水処理方法において、一又は複
数のディーゼル機関等より冷却水を抜き取り回収する回
収タンクと、該タンク内の冷却水の水質状態を判断する
手段と、該判断手段により、前記冷却水が再利用不可能
な状態と判断された場合に、前記タンク若しくは該タン
クとその循環経路に設けられた排水処理要素により排水
処理を行う手段と、前記冷却水が再利用可能と判断され
た場合は該冷却水に再生処理を施して前記ディーゼル機
関等に返送する返送経路とからなることを特徴とする。A sixth aspect of the present invention relates to an apparatus for effectively implementing the first aspect of the present invention, wherein the apparatus has a closed circulation cooling water system such as a diesel engine using a nitrite-based corrosion inhibitor. And a cooling water treatment method in equipment (hereinafter referred to as a diesel engine or the like), a collection tank for extracting and collecting cooling water from one or more diesel engines or the like, and a means for determining a water quality state of the cooling water in the tank; Means for performing wastewater treatment by the tank or a wastewater treatment element provided in the tank and its circulation path when the cooling water is determined to be in a state in which the cooling water cannot be reused; If it is determined that the cooling water can be used, the cooling water is subjected to a regeneration process and returned to the diesel engine or the like.
【００１８】請求項７記載の発明は、前記請求項２記載
の発明を効果的に実施する装置に関する発明で、前記タ
ンクの循環経路に、前記冷却水の酸化処理後に精製され
るＳＳ（浮遊物質）凝集フロックを捕捉するフィルタ手
段が介在していることを特徴とする。A seventh aspect of the present invention relates to an apparatus for effectively implementing the second aspect of the present invention, wherein a SS (floating substance) purified after the oxidation treatment of the cooling water is provided in the circulation path of the tank. A) a filter means for capturing aggregated flocs is interposed;
【００１９】請求項８記載の発明は、前記請求項５記載
の発明を効果的に実施する装置に関する発明で 前記再
生処理が、前記回収タンク内の前記冷却水に腐食防止剤
を注入して前記冷却水の防腐食力を再生する手段である
ことを特徴とする。尚、「再生処理」即ち腐食防止剤注
入設備が循環冷却水系を有する該設備が固有の注入設備
を有する場合は、必ずしも本処理設備側で腐食防止剤注
入設備を持たす必要はないが、循環冷却水系を有する該
設備への腐食防止剤の注入、均一混入、濃度確認等は手
間のかかるものであり、事前に本回収タンクで実施して
おくことは、オーバホール後の再起動までの時間短縮に
もなり、簡便であるという効果を有する。According to an eighth aspect of the present invention, there is provided an apparatus for effectively implementing the fifth aspect of the present invention, wherein the regenerating process comprises: injecting a corrosion inhibitor into the cooling water in the recovery tank; It is a means for regenerating the anti-corrosion power of the cooling water. In addition, if the "regeneration treatment", that is, the corrosion inhibitor injection equipment has a circulating cooling water system, and the equipment has its own injection equipment, it is not always necessary to have the corrosion inhibitor injection equipment on the processing equipment side. Injection, uniform mixing, concentration confirmation, etc. of the corrosion inhibitor into the equipment having a water system are troublesome, and it is necessary to carry out in the main recovery tank in advance to shorten the time until restarting after overhaul. This has the effect of being simple.
【００２０】請求項９記載の発明は、前記請求項１記載
の発明の効果を具体化する装置に関する発明で、前記回
収タンクが一つの回収タンクであって、複数のディーゼ
ル機関等とこれに対応する返送経路の下流側で並列に連
結されている。According to a ninth aspect of the present invention, there is provided an apparatus for embodying the effects of the first aspect of the present invention, wherein the recovery tank is a single recovery tank, and a plurality of diesel engines and the like are provided. Are connected in parallel on the downstream side of the return path.
【００２１】かかる発明によれば、前記返送経路が夫々
のディーゼル機関等毎に個別である為に、回収タンクが
一つのディーゼル機関等の冷却水を貯水する回収タンク
であっても夫々のディーゼル機関等毎に順次オーバホー
ルをしながら効果的に再生冷却水の返送が可能である。According to this invention, since the return path is individual for each diesel engine or the like, even if the recovery tank is a recovery tank for storing cooling water such as a single diesel engine or the like, each of the diesel engines is used. It is possible to effectively return the regeneration cooling water while sequentially overhauling each time.
【００２２】次に本発明を具体的に説明する。本発明
は、亜硝酸塩系その他の酸塩系の腐食防止剤を使用する
ディーゼル機関等のオーバーホールの際に、前記冷却水
を前記ディーゼル機関等から抜き取り、回収タンクへ導
入して前記冷却水の状態を水質測定手段によって測定
し、前記測定結果に基づいて制御装置が前記冷却水の水
質状態を判断し、前記冷却水が再利用不可能な状態と判
断された場合は該冷却水に前記循環経路やタンク内に設
けた排水処理要素を利用して排水処理を施して系外に排
出し、前記冷却水が再利用可能と判断された場合は該冷
却水に再生処理を施して前記ディーゼル機関等に返送経
路を利用して返送して利用することを特徴とする。Next, the present invention will be described specifically. In the present invention, when overhauling a diesel engine or the like using a nitrite-based or other acid salt-based corrosion inhibitor, the cooling water is withdrawn from the diesel engine or the like, introduced into a recovery tank, and the state of the cooling water is collected. Is measured by the water quality measuring means, and the control device determines the state of the water quality of the cooling water based on the measurement result, and when it is determined that the cooling water is in a state that cannot be reused, the cooling water passes through the circulation path. And wastewater treatment using a wastewater treatment element provided in the tank and discharging the wastewater to the outside of the system. If it is determined that the cooling water can be reused, the cooling water is subjected to a regeneration treatment to produce the diesel engine or the like. It is characterized in that it is returned and used using a return route.
【００２３】そして好ましくは、本発明の前記排水処理
の工程において、前記回収タンク内の冷却水に酸化処理
剤を必要量投入することで、前記冷却水のＣＯＤ（化学
的酸素要求量）を低下させ、該酸化処理剤投入に伴って
前記冷却水のｐＨが低下して前記冷却水中のＳＳ（浮遊
物質）が凝集されて発生したフロックを、循環経路に設
けたフィルタ手段を用いて捕捉することで前記冷却水か
ら前記ＳＳ（浮遊物質）を除去し、前記ＳＳ（浮遊物
質）を除去した後のタンク内の冷却水にｐＨ制御剤を投
入することで、前記冷却水を所定のｐＨレベルに調整し
て、再利用不可能な状態と判断された前記冷却水が排水
基準を達成するよう処理する。Preferably, in the wastewater treatment step of the present invention, a required amount of an oxidizing agent is added to the cooling water in the recovery tank to reduce the COD (chemical oxygen demand) of the cooling water. Using a filter means provided in a circulation path, to capture a floc generated by agglomeration of SS (floating substance) in the cooling water due to a decrease in pH of the cooling water with the introduction of the oxidizing agent. By removing the SS (floating substance) from the cooling water and adding a pH control agent to the cooling water in the tank after removing the SS (floating substance), the cooling water is brought to a predetermined pH level. The cooling water, which is determined to be in a non-reusable state, is adjusted so as to achieve a drainage standard.
【００２４】一方前記再生処理において、前記回収タン
ク内の冷却水に腐食防止剤を必要量注入することで、所
定の腐食防止剤濃度に調整して前記冷却水の防腐食力を
再生し、オーバーホール終了後、前記返送経路を利用し
て夫々のディーゼル機関等に返送して再利用する。On the other hand, in the regeneration treatment, a required amount of a corrosion inhibitor is injected into the cooling water in the recovery tank to adjust the concentration of the corrosion inhibitor to a predetermined value, thereby regenerating the anti-corrosion power of the cooling water, After the completion, they are returned to the respective diesel engines or the like using the return route and reused.
【００２５】[0025]
【発明の実施の形態】以下、本発明を図に示した実施例
を用いて詳細に説明する。但し、この実施例に記載され
る構成部品の種類、材質、数量、その相対配置などは特
に特定的な記載が無い限り、この発明の範囲をそれのみ
に限定する趣旨ではなく単なる説明例に過ぎない。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to an embodiment shown in the drawings. However, the types, materials, quantities, relative arrangements, and the like of the components described in this embodiment are not merely intended to limit the scope of the present invention, but are merely illustrative examples unless otherwise specified. Absent.
【００２６】本発明の実施形態に係るディーゼル機関の
冷却水処理システムを図１乃至図３に基づいて説明す
る。図１は、本発明の実施の形態に係るディーゼル機関
冷却水処理システム１の概略構成図である。図２は、前
記ディーゼル機関冷却水処理システムにおける冷却水の
再生処理工程を示す工程系統図である。図３は、前記デ
ィーゼル機関冷却水処理システムにおける冷却水の排水
処理工程を示す工程系統図である。A cooling water treatment system for a diesel engine according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic configuration diagram of a diesel engine cooling water treatment system 1 according to an embodiment of the present invention. FIG. 2 is a process system diagram showing a cooling water regeneration process in the diesel engine cooling water treatment system. FIG. 3 is a process system diagram showing a process of draining the cooling water in the diesel engine cooling water processing system.
【００２７】図１は、前記ディーゼル機関１０１から排
出された冷却水を回収する回収タンク８、該タンク８に
付設されたタンク内冷却水の攪拌器２０、回収タンク８
に投入するｐＨ制御剤タンク１０、腐食防止剤タンク１
１、酸化処理剤タンク１２、前記回収タンク８内の冷却
水の水質状態を検知するセンサ２１、該センサ２１から
の出力信号に基づいて前記回収タンク８へ注入するｐＨ
制御剤、腐食防止剤、酸化処理剤の注入量を判断及び制
御する制御装置７０等から構成される本発明のディーゼ
ル機関冷却水処理システム１の実施形態を示している。FIG. 1 shows a recovery tank 8 for recovering the cooling water discharged from the diesel engine 101, a stirrer 20 for the cooling water in the tank attached to the tank 8, and a recovery tank 8.
PH control agent tank 10 and corrosion inhibitor tank 1
1. An oxidizing agent tank 12, a sensor 21 for detecting the quality of cooling water in the recovery tank 8, and a pH to be injected into the recovery tank 8 based on an output signal from the sensor 21.
1 shows an embodiment of a diesel engine cooling water treatment system 1 of the present invention including a control device 70 for determining and controlling the injection amounts of a control agent, a corrosion inhibitor, and an oxidizing agent.
【００２８】前記回収タンク８は、前記ディーゼル機関
等１０１から冷却水をオーバーホール等の理由で排出す
る必要がある場合に、一時的に前記冷却水を収納して再
生若しくは排水処理するタンクである。前記回収タンク
８に回収された前記冷却水は、水質検知センサ２１によ
ってｐＨ、腐食剤濃度、赤錆の有無等の水質状態を検出
され、その検出結果は出力信号によって制御装置７０に
入力される。そして該制御装置７０は、前記冷却水の水
質状態の検出結果に基づいて冷却水の再利用の可・不可
を決定し、前記冷却水の再生処理又は排水処理を行なう
ために冷却水処理の制御を行なう。The recovery tank 8 is a tank for temporarily storing the cooling water for regenerating or draining when it is necessary to discharge the cooling water from the diesel engine 101 or the like due to overhaul or the like. The cooling water collected in the collecting tank 8 is detected by the water quality detecting sensor 21 for a water quality state such as pH, corrosive agent concentration, presence or absence of red rust, and the detection result is input to the control device 70 by an output signal. The control device 70 determines whether or not the cooling water can be reused based on the detection result of the water quality state of the cooling water, and controls the cooling water treatment to perform the cooling water regeneration treatment or the drainage treatment. Perform
【００２９】前記制御装置７０は、前記酸化処理剤タン
ク１２から前記回収タンク８へ注入する酸化処理剤の注
入量を調節する開閉弁１８、前記ｐＨ制御剤タンク１０
から前記回収タンク８へ注入するｐＨ制御剤の注入量を
調節するポンプ５０、前記腐食防止剤タンク１１から前
記回収タンク８へ注入する腐食防止剤の注入量を調節す
るポンプ５１、前記回収タンク８に回収された冷却水と
添加された上記薬品とを攪拌する前記攪拌器２０の動作
を夫々駆動制御するだけでなく、本ディーゼル機関等等
冷却処理システム１内の全ての弁、及びポンプの動作も
制御（不図示）している。The control device 70 includes an on-off valve 18 for adjusting the injection amount of the oxidizing agent to be injected from the oxidizing agent tank 12 into the recovery tank 8, and the pH control agent tank 10.
Pump 50 for adjusting the injection amount of the pH control agent injected from the tank into the recovery tank 8, pump 51 for adjusting the injection amount of the corrosion inhibitor injected from the corrosion inhibitor tank 11 into the recovery tank 8, and the recovery tank 8 In addition to controlling the operation of the stirrer 20 for stirring the cooling water and the added chemical, the operation of all valves and pumps in the cooling processing system 1 such as the diesel engine is performed. Is also controlled (not shown).
【００３０】前記ディーゼル機関等等１０１と前記タン
ク８入口を接続する配管４０には、ポンプ２、開閉弁２
４、３、６、７が直列に接続されてタンク８入口に冷却
水を導くとともに、他のディーゼル機関等等（不図示）
と接続するための連絡配管５が開閉弁３と６の間に設置
され、また連絡配管５の上流側の前記弁３下流側と前記
ポンプ２の上流側とをバイパスして再利用冷却水の返送
を行う開閉弁４を有する返送配管４３が設置されてい
る。A pump 2 and an on-off valve 2 are connected to a pipe 40 connecting the diesel engine 101 or the like to the inlet of the tank 8.
4, 3, 6, and 7 are connected in series to guide cooling water to the inlet of the tank 8, and other diesel engines and the like (not shown).
A connecting pipe 5 for connection with the cooling water is provided between the on-off valves 3 and 6, and a bypass of the downstream side of the valve 3 on the upstream side of the connecting pipe 5 and the upstream side of the pump 2 is provided. A return pipe 43 having an on-off valve 4 for returning is installed.
【００３１】また、前記タンク８底部と排水口１６を接
続する配管４２には、前記回収タンク８出口に排出弁２
２と、ポンプ１３、水フィルタ１４及び開閉弁１５が直
列に設置され排水経路を構成するとともに、該ポンプ１
３と該開閉弁１５の間の排水系配管４２と、前記開閉弁
６と７の間の冷却水導入配管４０とを接続させ、ポンプ
１３により前記タンク８底部よりの冷却水が導入配管４
０を介して入口側に循環する。又循環配管４１には逆止
弁１７が設置されている。A pipe 42 connecting the bottom of the tank 8 and the drain 16 is provided with a discharge valve 2 at the outlet of the recovery tank 8.
2, a pump 13, a water filter 14, and an on-off valve 15 are installed in series to constitute a drainage path.
The drainage pipe 42 between the valve 3 and the on-off valve 15 is connected to the cooling water introduction pipe 40 between the on-off valves 6 and 7, and the pump 13 supplies the cooling water from the bottom of the tank 8 to the introduction pipe 4.
Circulate through 0 to the inlet side. The check valve 17 is installed in the circulation pipe 41.
【００３２】次に本発明であるディーゼル機関等等冷却
水処理システム１によるディーゼル機関等等冷却水の処
理工程を図２乃至図３に基づいて説明する。まず、前記
冷却水が再利用可能である場合の工程を図２を用いて説
明する。前記ディーゼル機関等等１０１の冷却水をオー
バーホール等の理由で抜き出す場合、導入配管４０の開
閉弁２４、３、６、７を開き、排出配管４２の排出弁２
２、返送配管４３の開閉弁４、又他のディーゼル機関等
等の連絡配管５の開閉弁１９を閉じた状態で回収ポンプ
２を運転することで、冷却水は前記一のディーゼル機関
等等１０１から回収タンク８へ注入される（Ｓ１）。Next, a process for treating cooling water for a diesel engine or the like by the cooling water treatment system 1 for a diesel engine or the like according to the present invention will be described with reference to FIGS. First, a process when the cooling water is reusable will be described with reference to FIG. When the cooling water of the diesel engine 101 or the like is extracted for reasons such as overhaul, the on-off valves 24, 3, 6, and 7 of the introduction pipe 40 are opened, and the discharge valve 2 of the discharge pipe 42 is opened.
2. By operating the recovery pump 2 with the open / close valve 4 of the return pipe 43 and the open / close valve 19 of the communication pipe 5 of another diesel engine or the like closed, the cooling water is discharged from the one diesel engine 101 or the like 101 Is injected into the collection tank 8 (S1).
【００３３】前記ディーゼル機関等等１０１から前記回
収タンク８へ前記冷却水の注入が完了した後、前記冷却
水の状態をセンサ２１によって水質測定する（Ｓ２）。
そしてその結果を出力信号によって制御装置７０に入力
して前記冷却水の再利用の可・不可が判断される（Ｓ
３）。前記冷却水が再利用可能と判断された場合は、腐
食防止剤タンク１１より配管４５を介して、前記制御装
置７０により制御されるポンプ５１によって亜硝酸系の
腐食防止剤を適量前記回収タンク８に注入し、前記攪拌
器２０によって前記冷却水と前記腐食防止剤を攪拌し、
前記回収タンク８内の冷却水が所定の腐食防止剤濃度と
なるよう調整する（Ｓ４）。前記腐食防止剤を前記冷却
水に添加することで該冷却水の再生がなされる（Ｓ
５）。After the injection of the cooling water from the diesel engine 101 or the like 101 into the recovery tank 8 is completed, the condition of the cooling water is measured by the sensor 21 (S2).
The result is input to the control device 70 by an output signal to determine whether the cooling water can be reused or not (S
3). If it is determined that the cooling water can be reused, a proper amount of the nitrite-based corrosion inhibitor is supplied from the corrosion inhibitor tank 11 via the pipe 45 by the pump 51 controlled by the control device 70 to the recovery tank 8. And the cooling water and the corrosion inhibitor are stirred by the stirrer 20,
The cooling water in the recovery tank 8 is adjusted to have a predetermined corrosion inhibitor concentration (S4). The cooling water is regenerated by adding the corrosion inhibitor to the cooling water (S
5).
【００３４】前記ディーゼル機関等等１０１のオーバー
オールが終了した後、バイパス弁４、開閉弁６、２２、
２３、２４を開き、開閉弁３、７、１５、１９を閉じ、
送水ポンプ１３によって前記調整された冷却水は前記回
収タンク８から返送用配管４３を介して前記ディーゼル
機関等等１０１に返送され、再利用される（Ｓ６）。After completion of the overall operation of the diesel engine or the like 101, the bypass valve 4, the on-off valves 6, 22,
Open 23, 24, close on-off valves 3, 7, 15, 19,
The cooling water adjusted by the water supply pump 13 is returned from the recovery tank 8 to the diesel engine 101 or the like 101 via the return pipe 43 and reused (S6).
【００３５】次に、前記冷却水が再利用不可である場合
の工程を、図３を用いて説明するが、Ｓ１からＳ３の工
程は図２に示す再生処理と同様であるのでここでは省略
する。前記水質状態検知センサ２１によって、回収され
た冷却水にｐＨの上昇や赤錆の発生が見られ、前記制御
装置７０によって前記冷却水の再利用が不可と判断され
た場合には、酸化処理剤タンク１２より配管４６を介し
て、前記制御装置７０により制御される開閉弁１８を開
いて酸化処理剤を適量前記回収タンク８に注入し、前記
攪拌器２０によって前記冷却水と前記酸化処理剤を攪拌
することで、前記冷却水中のＣＯＤ（化学的酸素要求
量）が低減し、排水基準値以下に調整される（Ｓ７）。Next, the steps in the case where the cooling water cannot be reused will be described with reference to FIG. 3. The steps from S1 to S3 are the same as the regeneration processing shown in FIG. . If the water quality state sensor 21 shows an increase in pH or the occurrence of red rust in the collected cooling water, and the control device 70 determines that the cooling water cannot be reused, the oxidizing agent tank The opening / closing valve 18 controlled by the control device 70 is opened from the pipe 12 through the pipe 46, and an appropriate amount of the oxidizing agent is injected into the recovery tank 8. By doing so, the COD (Chemical Oxygen Demand) in the cooling water is reduced and adjusted to be equal to or lower than the drainage standard value (S7).
【００３６】前記酸化処理剤が注入されることにより前
記冷却水のｐＨ濃度が低下し、それに伴って前記冷却水
中の赤錆等の浮遊物質（ＳＳ）が凝集してフロック（浮
遊物質の凝集体）となる。そこで開閉弁６、１５を閉じ
た状態で排水弁２２、開閉弁７、２３を開き、送水ポン
プ１３を運転することにより、フロックを含む前記冷却
水を前記回収タンク８より配管４２に設置された水フィ
ルタ１４で前記冷却水を濾過して前記フロックを捕捉す
ることで前記冷却水中の浮遊物質（ＳＳ）は除去され、
排水基準値以下に調整され、その後４１、４０の循環経
路を介して循環させ、る（Ｓ８、Ｓ９）。The injection of the oxidizing agent lowers the pH concentration of the cooling water, and the floating substances (SS) such as red rust in the cooling water aggregate to form flocs (aggregates of floating substances). Becomes Then, with the on-off valves 6 and 15 closed, the drain valve 22 and the on-off valves 7 and 23 were opened, and the water supply pump 13 was operated, so that the cooling water including flocs was installed in the pipe 42 from the recovery tank 8. The suspended matter (SS) in the cooling water is removed by filtering the cooling water with the water filter 14 and capturing the flocs.
The water is adjusted to the drainage standard value or less, and then circulated through the circulation paths 41 and 40 (S8, S9).
【００３７】更に、前記工程（Ｓ７）で低下した前記冷
却水のｐＨを排水基準値に調整するために、前記工程
（Ｓ８）冷却水の循環を終了し（Ｓ１０）、冷却水を前
記回収タンク８に戻し入れ、ｐＨ制御剤タンク１０より
配管４４を介して、前記制御装置７０により制御される
ポンプ５０によってｐＨ制御剤を適量前記回収タンク８
に注入し、前記攪拌器２０によって前記冷却水と前記酸
化処理剤を攪拌することで、前記冷却水のｐＨ濃度が排
水基準レベルに調整される（Ｓ１１）。Further, in order to adjust the pH of the cooling water lowered in the step (S7) to the drainage standard value, the circulation of the cooling water in the step (S8) is terminated (S10), and the cooling water is removed from the recovery tank. 8 and a suitable amount of the pH control agent is supplied from the pH control agent tank 10 via the pipe 44 by the pump 50 controlled by the control device 70 to the collection tank 8.
The cooling water and the oxidizing agent are stirred by the stirrer 20, so that the pH concentration of the cooling water is adjusted to the drainage standard level (S11).
【００３８】再生不可と判断された前記冷却水は、工程
Ｓ７、Ｓ８、Ｓ９、Ｓ１０、Ｓ１１を経て排水基準値に
適った水質に調整された後、開閉弁１５、２２を開き、
開閉弁７、２３を閉じた状態で、前記冷却水は送水ポン
プ１３によって前記回収タンク８から排出配管４２を介
して排出口１６を経て系外に排出される（Ｓ１２）。な
お、本発明のディーゼル機関等等冷却水処理システム
は、複数のディーゼル機関等等がある場合でも連絡配管
５を用いて弁４を具えた返送配管４３と弁２４〜弁３ま
での導入配管４０を具えた他のディーゼル機関等等及び
その導入／返送配管４０，４３と連結可能に構成してあ
るため、順次連結された他のディーゼル機関等等の冷却
水処理を行うことが可能である。他のディーゼル機関等
等との連結形態はここでは図示しないが、弁４を具えた
返送配管４３と弁２４〜弁３までの導入配管４０を具え
ていることは前記したとおりである。The cooling water determined to be unrecyclable is adjusted to a water quality suitable for the drainage standard value through steps S7, S8, S9, S10 and S11, and then the on-off valves 15 and 22 are opened.
With the on-off valves 7 and 23 closed, the cooling water is discharged from the recovery tank 8 by the water supply pump 13 through the discharge pipe 42 to the outside of the system via the discharge port 16 (S12). The cooling water treatment system for a diesel engine or the like of the present invention uses the return pipe 43 having the valve 4 and the introduction pipe 40 from the valve 24 to the valve 3 using the communication pipe 5 even when there are a plurality of diesel engines and the like. Since it is configured to be connectable to other diesel engines and the like having the above and the introduction / return pipes 40 and 43 thereof, it is possible to perform cooling water treatment of the other diesel engines and the like connected in sequence. The connection form with other diesel engines and the like is not shown here, but as described above, the return pipe 43 having the valve 4 and the introduction pipe 40 from the valves 24 to 3 are provided.
【００３９】前記水質状態検知センサ２１によって、回
収された冷却水にｐＨの上昇や赤錆の発生が見られ、前
記制御装置７０によって前記冷却水の再利用が不可と判
断された場合には、酸化処理剤タンク１２より配管４６
を介して、前記制御装置７０により制御される開閉弁１
８を開いて酸化処理剤を適量前記回収タンク８に注入
し、前記攪拌器２０によって前記冷却水と前記酸化処理
剤を攪拌することで、前記冷却水中のＣＯＤ（化学的酸
素要求量）が低減し、排水基準値以下に調整される（Ｓ
７）。If the water quality state detection sensor 21 shows an increase in pH or the occurrence of red rust in the collected cooling water, and if the control device 70 determines that the cooling water cannot be reused, the oxidization is performed. Piping 46 from treatment agent tank 12
On-off valve 1 controlled by the control device 70 via the
8 is opened, an appropriate amount of the oxidizing agent is injected into the recovery tank 8, and the cooling water and the oxidizing agent are stirred by the stirrer 20, so that COD (chemical oxygen demand) in the cooling water is reduced. And adjusted to below the drainage standard value (S
7).
【００４０】前記酸化処理剤が注入されることにより前
記冷却水のｐＨ濃度が低下し、それに伴って前記冷却水
中の赤錆等の浮遊物質（ＳＳ）が凝集してフロック（浮
遊物質の凝集体）となる。そこで開閉弁６、１５を閉じ
た状態で排水弁２２、開閉弁７、２３を開き、送水ポン
プ１３を運転することにより、フロックを含む前記冷却
水を前記回収タンク８より配管４２に設置された水フィ
ルタ１４で前記冷却水を濾過して前記フロックを捕捉す
ることで前記冷却水中の浮遊物質（ＳＳ）は除去され、
排水基準値以下に調整され、その後４１、４０の循環経
路を介して循環させ、る（Ｓ８、Ｓ９）。The injection of the oxidizing agent lowers the pH concentration of the cooling water, and the floating substances (SS) such as red rust in the cooling water aggregate to form flocs (aggregates of floating substances). Becomes Then, with the on-off valves 6 and 15 closed, the drain valve 22 and the on-off valves 7 and 23 were opened, and the water supply pump 13 was operated, so that the cooling water including flocs was installed in the pipe 42 from the recovery tank 8. The suspended matter (SS) in the cooling water is removed by filtering the cooling water with the water filter 14 and capturing the flocs.
The water is adjusted to the drainage standard value or less, and then circulated through the circulation paths 41 and 40 (S8, S9).
【００４１】更に、前記工程（Ｓ７）で低下した前記冷
却水のｐＨを排水基準値に調整するために、前記工程
（Ｓ８）冷却水の循環を終了し（Ｓ１０）、冷却水を前
記回収タンク８に戻し入れ、ｐＨ制御剤タンク１０より
配管４４を介して、前記制御装置７０により制御される
ポンプ５０によってｐＨ制御剤を適量前記回収タンク８
に注入し、前記攪拌器２０によって前記冷却水と前記酸
化処理剤を攪拌することで、前記冷却水のｐＨ濃度が排
水基準レベルに調整される（Ｓ１１）。Further, in order to adjust the pH of the cooling water lowered in the step (S7) to the drainage standard value, the circulation of the cooling water in the step (S8) is terminated (S10), and the cooling water is removed from the recovery tank. 8 and a suitable amount of the pH control agent is supplied from the pH control agent tank 10 via the pipe 44 by the pump 50 controlled by the control device 70 to the collection tank 8.
The cooling water and the oxidizing agent are stirred by the stirrer 20, so that the pH concentration of the cooling water is adjusted to the drainage standard level (S11).
【００４２】尚、ＰＨ調整後にフィルタリングを行う場
合のステップを(Ｓ２０)(Ｓ２１)に示す。この場合フィ
ルタの目の粗さは２５μｍから１０μｍに交換してお
く。先ず前記水質状態検知センサ２１によって、回収さ
れた冷却水にｐＨの上昇や赤錆の発生が見られ、前記制
御装置７０によって前記冷却水の再利用が不可と判断さ
れた場合には、酸化処理剤タンク１２より配管４６を介
して、前記制御装置７０により制御される開閉弁１８を
開いて酸化処理剤を適量、前記回収タンク８に注入し、
前記攪拌器２０によって前記冷却水と前記酸化処理剤を
攪拌することで、前記冷却水中のＣＯＤ（化学的酸素要
求量）が低減し、排水基準値以下に調整される（Ｓ
７）。Steps for performing filtering after PH adjustment are shown in (S20) and (S21). In this case, the coarseness of the filter is changed from 25 μm to 10 μm. First, the water quality state detection sensor 21 shows an increase in pH or generation of red rust in the collected cooling water, and when the control device 70 determines that the cooling water cannot be reused, the oxidizing agent The on-off valve 18 controlled by the control device 70 is opened from the tank 12 via the pipe 46 to inject an appropriate amount of the oxidizing agent into the recovery tank 8,
By stirring the cooling water and the oxidizing agent by the stirrer 20, COD (chemical oxygen demand) in the cooling water is reduced and adjusted to a drainage standard value or less (S
7).
【００４３】前記酸化処理剤が注入されることにより前
記冷却水のｐＨ濃度が低下し、それに伴って前記冷却水
中の赤錆等の浮遊物質（ＳＳ）が凝集してフロック（浮
遊物質の凝集体）となる。そこでｐＨ制御剤タンク１０
より配管４４を介して、前記制御装置７０により制御さ
れるポンプ５０によってｐＨ制御剤を適量前記回収タン
ク８に注入し、前記攪拌器２０によって前記冷却水と前
記酸化処理剤を攪拌することで、前記冷却水のｐＨ濃度
が排水基準レベルに調整される（Ｓ２０）。次に開閉弁
２３を閉じた状態で排水弁２２、開閉弁１５を開き、送
水ポンプ１３を運転することにより、ＰＨ調整により一
部が崩壊されたフロックを含む前記冷却水を前記回収タ
ンク８より配管４２に設置された水フィルタ１４で前記
冷却水を濾過して前記フロックを捕捉することで前記冷
却水中の浮遊物質（ＳＳ）は除去され、排水基準値以下
に調整され、その後排出配管４２を介して排出口１６を
経て系外に排出される（Ｓ２０）。The injection of the oxidizing agent lowers the pH concentration of the cooling water, and the floating substances (SS) such as red rust in the cooling water aggregate to form flocs (aggregates of floating substances). Becomes Therefore, the pH control agent tank 10
By injecting an appropriate amount of a pH control agent into the collection tank 8 by a pump 50 controlled by the control device 70 through the pipe 44, and stirring the cooling water and the oxidizing agent by the stirrer 20, The pH concentration of the cooling water is adjusted to a drainage standard level (S20). Next, with the on-off valve 23 closed, the drain valve 22 and the on-off valve 15 are opened, and the water supply pump 13 is operated, so that the cooling water including the flocs partially broken by the PH adjustment is removed from the recovery tank 8. By filtering the cooling water with the water filter 14 installed in the pipe 42 and capturing the flocs, suspended solids (SS) in the cooling water are removed and adjusted to a drainage standard value or less. It is discharged out of the system through the discharge port 16 through the outlet (S20).
【００４４】尚、本実施の形態で用いる酸化防止剤はス
ルファミン酸あり、ｐＨ制御剤は苛性ソーダであるが、
これに限定されるものではない。尚、実際の試験では、
スルファミン酸のみではＣＯＤが下がりきらず、排水基
準の激しい場所では、更に低いレベルを要求される場合
も考慮し、更に過硫酸ソーダを投入した。過硫酸ソーダ
は、硫酸と過酸化水素を発生させ、この酸化水素が他の
ＣＯＤ成分を酸化させて該ＣＯＤ成分を処理した。The antioxidant used in the present embodiment is sulfamic acid, and the pH controlling agent is caustic soda.
It is not limited to this. In the actual test,
COD could not be reduced only with sulfamic acid alone, and soda persulfate was further added in places where effluent standards were severe, considering even lower levels were required. Sodium persulfate generated sulfuric acid and hydrogen peroxide, which oxidized other COD components and treated the COD components.
【００４５】[0045]
【発明の効果】以上に述べたように、本発明によれば、
亜硝酸塩系、重合リン酸塩系、モリブデン酸塩系等の酸
塩系腐食防止剤を使用するディーゼル機関その他の密閉
循環冷却水系を有する機器及び設備における冷却水処理
において、複雑な工程及びラインが不要で、排水処理及
び再生処理が単一回収槽で行なわれるので設備規模が大
幅に縮小可能である。また前記冷却水の水質に基づいて
適切な処理が施されるため、前記ディーゼル機関等から
回収された冷却水が再利用できる場合は冷却水を排出す
ることなく再利用し、また前記冷却水が再利用不可の場
合でも、排水量を増やすことなく排水処理を行うことが
可能となった。As described above, according to the present invention,
In the treatment of cooling water in equipment and facilities having a closed circulating cooling water system such as a diesel engine using an acid salt-based corrosion inhibitor such as a nitrite-based, polymerized phosphate-based, or molybdate-based, complicated processes and lines are required. Since the wastewater treatment and the regeneration treatment are performed in a single recovery tank, the equipment scale can be significantly reduced. In addition, since the appropriate treatment is performed based on the quality of the cooling water, if the cooling water collected from the diesel engine or the like can be reused, the cooling water is reused without discharging, and the cooling water is used. Even when reuse is not possible, wastewater treatment can be performed without increasing the amount of wastewater.
【図１】 本発明の実施の形態に係るディーゼル機関冷
却水処理システムの概略構成図である。FIG. 1 is a schematic configuration diagram of a diesel engine cooling water treatment system according to an embodiment of the present invention.
【図２】 本発明の実施の形態に係るディーゼル機関冷
却水処理システムにおける冷却水の再生処理工程を示す
工程系統図である。FIG. 2 is a process system diagram showing a cooling water regeneration process in the diesel engine cooling water treatment system according to the embodiment of the present invention.
【図３】 本発明の実施の形態に係るディーゼル機関冷
却水処理システムにおける冷却水の排水処理工程を示す
工程系統図である。FIG. 3 is a process system diagram showing a cooling water drainage process in the diesel engine cooling water treatment system according to the embodiment of the present invention.
１ ディーゼル機関等冷却処理システム ５ 連絡配管 ８ 回収タンク ９ 酸化処理剤投入口 １０ ｐＨ制御剤タンク １１ 腐食防止剤タンク １２ 酸化処理剤タンク １４ 水フィルタ １６ 排水口 １７ 逆止弁 ２０ 攪拌器 ２１ 水質状態検知センサ ４０ 冷却水導入配管 ４１ 冷却水循環配管 ４２ 冷却水排出配管 ４３ 冷却水返送配管 ７０ 制御装置 １０１ ディーゼル機関 DESCRIPTION OF SYMBOLS 1 Diesel engine cooling treatment system 5 Communication pipe 8 Recovery tank 9 Oxidizing agent input port 10 pH control agent tank 11 Corrosion inhibitor tank 12 Oxidizing agent tank 14 Water filter 16 Drain port 17 Check valve 20 Stirrer 21 Water quality Detection sensor 40 Cooling water introduction pipe 41 Cooling water circulation pipe 42 Cooling water discharge pipe 43 Cooling water return pipe 70 Control device 101 Diesel engine
Claims (9)
ン酸塩系等の酸塩系腐食防止剤を使用するディーゼル機
関等の密閉循環冷却水系を有する機器及び設備(以下デ
ィーゼル機関等という)における冷却水処理方法におい
て、 オーバーホールその他のディーゼル機関等運転停止時
に、前記冷却水をディーゼル機関等から抜き取り、回収
タンクへ導入して前記冷却水の状態を水質測定し、該測
定結果に基づいて、 前記冷却水が再利用不可能な場合は該冷却水に排水処理
を施して系外に排出し、 一方前記冷却水が再利用可能な場合は該冷却水に再生処
理を施して前記ディーゼル機関等に返送して再利用する
とともに、前記排水処理と再生処理がいずれも前記回収
タンク内若しくは該タンクの循環経路内で行われること
を特徴とするディーゼル機関等等の密閉循環冷却水系を
有する機器及び設備における1. A device and equipment having a closed circulating cooling water system such as a diesel engine using an acid salt corrosion inhibitor such as a nitrite, a polymerized phosphate or a molybdate (hereinafter referred to as a diesel engine, etc.). In the cooling water treatment method according to the above, when the operation of the overhaul or other diesel engine or the like is stopped, the cooling water is extracted from the diesel engine or the like, introduced into a recovery tank, the state of the cooling water is measured, and based on the measurement result, If the cooling water cannot be reused, the cooling water is subjected to drainage treatment and discharged out of the system. On the other hand, if the cooling water is reusable, the cooling water is subjected to regeneration treatment and the diesel engine, etc. And the wastewater treatment and the regeneration treatment are both performed in the recovery tank or in a circulation path of the tank. In equipment and facilities having a closed circulating cooling water system etc.
の冷却水に酸化処理剤を必要量投入することで、前記冷
却水のＣＯＤ（化学的酸素要求量）を低下させ、該酸化
処理剤投入に伴って前記冷却水のｐＨが低下して前記冷
却水中のＳＳ（浮遊物質）が凝集されて発生したフロッ
クを、 循環経路に設けたフィルタ手段を用いて捕捉することで
前記冷却水から前記ＳＳ（浮遊物質）を除去し、前記Ｓ
Ｓ（浮遊物質）を除去した後のタンク内の冷却水にｐＨ
制御剤を投入することで、前記冷却水を所定のｐＨレベ
ルに調整することを特徴とする請求項１記載のディーゼ
ル機関等の密閉循環冷却水系を有する機器及び設備にお
ける冷却水処理方法。2. In the wastewater treatment, a required amount of an oxidizing agent is added to the cooling water in the recovery tank, thereby reducing the COD (chemical oxygen demand) of the cooling water and introducing the oxidizing agent. As a result, the floc generated by agglomeration of the SS (floating substance) in the cooling water due to a decrease in the pH of the cooling water accompanying the cooling water is captured using a filter provided in a circulation path, so that the SS is removed from the cooling water. (Suspended matter)
The pH of the cooling water in the tank after removing S (floating substances)
The method for treating cooling water in equipment and equipment having a closed circulation cooling water system, such as a diesel engine, according to claim 1, wherein the cooling water is adjusted to a predetermined pH level by adding a control agent.
内の冷却水に酸化処理剤を必要量投入することで、前記
冷却水のＣＯＤ（化学的酸素要求量）を低下させ、該酸
化処理剤投入に伴って前記冷却水のｐＨが低下して前記
冷却水中のＳＳ（浮遊物質）が凝集されて発生したフロ
ックを生成した後、 タンク内の冷却水にｐＨ制御剤を投入することで、前記
冷却水を所定のｐＨレベルに調整し、その後前記ｐＨ調
整により一部崩壊したフロックを、フィルタ手段を用い
て捕捉することことを特徴とする請求項１記載のディー
ゼル機関等の密閉循環冷却水系を有する機器及び設備に
おける冷却水処理方法。3. In the wastewater treatment, a required amount of an oxidizing agent is added to the cooling water in the recovery tank, thereby lowering the COD (chemical oxygen demand) of the cooling water and introducing the oxidizing agent. After the pH of the cooling water decreases with the occurrence of flocs generated by agglomeration of SS (floating substances) in the cooling water, a pH controller is added to the cooling water in the tank to perform the cooling. 2. The closed circulating cooling water system for a diesel engine or the like according to claim 1, wherein the water is adjusted to a predetermined pH level, and the flocs partially collapsed by the pH adjustment are captured using a filter means. Cooling water treatment method for equipment and facilities.
水のｐＨレベルに調整して排水基準を達成させた後、系
外に排出させることを特徴とする請求項１記載のディー
ゼル機関等の密閉循環冷却水系を有する機器及び設備に
おける冷却水処理方法。4. The diesel engine or the like according to claim 1, wherein after the SS is removed, the cooling water in the tank is adjusted to a pH level to achieve a drainage standard and then discharged out of the system. For treating cooling water in equipment and facilities having a closed circulating cooling water system.
内の冷却水に腐食防止剤を注入して該冷却水の防腐食力
を再生した後、前記ディーゼル機関等に返送して再利用
することを特徴とする請求項１記載のディーゼル機関等
の密閉循環冷却水系を有する機器及び設備における冷却
水処理方法。5. The method according to claim 5, wherein in the regeneration treatment, a corrosion inhibitor is injected into the cooling water in the recovery tank to regenerate the anticorrosion power of the cooling water, and then returned to the diesel engine or the like for reuse. A method for treating cooling water in equipment and equipment having a closed circulation cooling water system, such as a diesel engine according to claim 1, characterized in that:
ン酸塩系等の酸塩系の腐食防止剤を使用するディーゼル
機関等の冷却水を処理する密閉循環冷却水系を有する機
器及び設備における冷却水処理装置において、 一又は複数のジーゼル機関より冷却水を抜き取り回収す
る回収タンクと、 該タンク内の冷却水の水質状態を判断する手段と、 該判断手段により、前記冷却水が再利用不可能な状態と
判断された場合に、前記タンク又は／及び該タンクとそ
の循環経路に設けられた排水処理要素により排水処理を
行う手段と、 前記冷却水が再利用可能と判断された場合は該冷却水に
再生処理を施して前記ディーゼル機関等に返送する返送
経路とからなることを特徴とするディーゼル機関等の密
閉循環冷却水系を有する機器及び設備における冷却水処
理装置。6. An apparatus and equipment having a closed circulation cooling water system for treating cooling water of a diesel engine or the like using an acid salt type corrosion inhibitor such as a nitrite type, a polymerized phosphate type or a molybdate type. In the cooling water treatment device, a recovery tank for extracting and recovering cooling water from one or more diesel engines, a unit for determining a state of water quality of the cooling water in the tank, and the determining unit determines that the cooling water is not reused. Means for performing wastewater treatment by a wastewater treatment element provided in the tank or / and the tank and its circulation path when it is determined that the cooling water can be reused; A return path for subjecting the cooling water to a regeneration process and returning the cooling water to the diesel engine or the like. Management apparatus.
酸化処理後に精製されるＳＳ（浮遊物質）凝集フロック
を捕捉するフィルタ手段が介在していることを特徴とす
る請求項６記載のディーゼル機関等の密閉循環冷却水系
を有する機器及び設備における冷却水処理装置。7. The diesel engine according to claim 6, wherein a filter means for capturing flocculated SS (floating substance) floc purified after oxidizing the cooling water is interposed in the circulation path of the tank. Cooling water treatment equipment for equipment and facilities having a closed circulation cooling water system such as engines.
記冷却水に腐食防止剤を注入して前記冷却水の防腐食力
を再生する手段であることを特徴とする請求項６記載の
ディーゼル機関等の密閉循環冷却水系を有する機器及び
設備における冷却水処理装置。8. The diesel engine according to claim 6, wherein said regeneration treatment is means for injecting a corrosion inhibitor into said cooling water in said recovery tank to regenerate an anticorrosive power of said cooling water. Cooling water treatment equipment for equipment and facilities having a closed circulation cooling water system such as engines.
って、複数のディーゼル機関等とこれに対応する返送経
路の下流側で並列に連結されていることを特徴とする請
求項６記載のディーゼル機関等の密閉循環冷却水系を有
する機器及び設備における冷却水処理装置。9. The diesel engine according to claim 6, wherein said recovery tank is one recovery tank, and is connected in parallel with a plurality of diesel engines and the like downstream of a corresponding return path. Cooling water treatment equipment for equipment and facilities having a closed circulation cooling water system such as engines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000232187A JP2002047936A (en) | 2000-07-31 | 2000-07-31 | Cooling water treatment method and its device in apparatus and equipment having closed circulation cooling water system for diesel engine or the like using acid salt corrosion inhibitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000232187A JP2002047936A (en) | 2000-07-31 | 2000-07-31 | Cooling water treatment method and its device in apparatus and equipment having closed circulation cooling water system for diesel engine or the like using acid salt corrosion inhibitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002047936A true JP2002047936A (en) | 2002-02-15 |
Family
ID=18724909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000232187A Withdrawn JP2002047936A (en) | 2000-07-31 | 2000-07-31 | Cooling water treatment method and its device in apparatus and equipment having closed circulation cooling water system for diesel engine or the like using acid salt corrosion inhibitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002047936A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006305462A (en) * | 2005-04-28 | 2006-11-09 | Kurita Water Ind Ltd | Method for treating nitrite based anticorrosive-containing waste water |
| JP2008133525A (en) * | 2006-11-29 | 2008-06-12 | Nippon Steel Corp | Method for treating circulation water in converter |
| US7964104B2 (en) | 2003-05-02 | 2011-06-21 | Japan Techno Co., Ltd. | Active antiseptic water or active water-based fluid, and production method and apparatus for the same |
| KR200478536Y1 (en) * | 2011-10-24 | 2015-10-19 | 대우조선해양 주식회사 | Corrosion inhibitor injection unit for cooling water line in ships |
| CN108087093A (en) * | 2017-12-31 | 2018-05-29 | 沪东重机有限公司 | The cooling water off-line equipment of nuclear power diesel emergency generating set |
-
2000
- 2000-07-31 JP JP2000232187A patent/JP2002047936A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7964104B2 (en) | 2003-05-02 | 2011-06-21 | Japan Techno Co., Ltd. | Active antiseptic water or active water-based fluid, and production method and apparatus for the same |
| JP2006305462A (en) * | 2005-04-28 | 2006-11-09 | Kurita Water Ind Ltd | Method for treating nitrite based anticorrosive-containing waste water |
| JP2008133525A (en) * | 2006-11-29 | 2008-06-12 | Nippon Steel Corp | Method for treating circulation water in converter |
| KR200478536Y1 (en) * | 2011-10-24 | 2015-10-19 | 대우조선해양 주식회사 | Corrosion inhibitor injection unit for cooling water line in ships |
| CN108087093A (en) * | 2017-12-31 | 2018-05-29 | 沪东重机有限公司 | The cooling water off-line equipment of nuclear power diesel emergency generating set |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2002047936A (en) | Cooling water treatment method and its device in apparatus and equipment having closed circulation cooling water system for diesel engine or the like using acid salt corrosion inhibitor | |
| CN114835302A (en) | Ship exhaust gas recirculation wastewater treatment system and ship | |
| CN102172467B (en) | Method and system for combined treatment of boiler smoke and alkaline waste water and waste heat utilization | |
| CN107399863B (en) | Combined treatment system and method for boiler chemical cleaning wastewater and air preheater flushing water | |
| JP2006218419A (en) | Indoor-installable apparatus for treating waste developer and indoor method for treating waste developer | |
| CN210656480U (en) | Adopt washing cigarette waste water retrieval and utilization processing apparatus of DTRO device | |
| CN105417832B (en) | A kind of integrated intelligence oilfield produced water processing unit and method | |
| CN210103609U (en) | Prevent wet-type oxidation reaction system of jam | |
| WO2022247111A1 (en) | Hydrochloric acid pickling solution purification and sludge treatment process | |
| CN210448129U (en) | Online descaling methanol-water separation system in low-temperature methanol washing process | |
| CN104874571A (en) | System for cleaning high-intensity magnetic separator coils | |
| CN112870822B (en) | Heat supply network circulating water bypass flow treatment system and control method | |
| CN105220136A (en) | A kind of blowing out rust protection guard method of waste heat boiler unit | |
| CN209052501U (en) | Vacuum pump circulating water cooling system | |
| CN106946376A (en) | The Water Treatment in Circulating Cooling System and method of ozone cooperative suspension on-line monitoring | |
| CN112573756A (en) | Integrated treatment equipment for treating coal chemical industry/coking wastewater | |
| CN206940590U (en) | The Water Treatment in Circulating Cooling System of ozone cooperative suspension on-line monitoring | |
| CN220788331U (en) | Phosphorus-containing sewage treatment system | |
| CN213012270U (en) | Condensate water recovery device | |
| CN204747004U (en) | Strong magnetism machine coil cleaning system | |
| CN205980929U (en) | Scale removal device of power plant condenser | |
| CN214406010U (en) | Furnace water circulating pump pipeline system | |
| CN215232575U (en) | Resin leakage prevention device for condensate polishing system | |
| CN201250152Y (en) | City reclaimed water advanced treatment testing device | |
| CN111167266B (en) | Exhaust gas treatment system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20071002 |