JPH08197039A - Treatment of ammonia-containing waste water - Google Patents
Treatment of ammonia-containing waste waterInfo
- Publication number
- JPH08197039A JPH08197039A JP7011880A JP1188095A JPH08197039A JP H08197039 A JPH08197039 A JP H08197039A JP 7011880 A JP7011880 A JP 7011880A JP 1188095 A JP1188095 A JP 1188095A JP H08197039 A JPH08197039 A JP H08197039A
- Authority
- JP
- Japan
- Prior art keywords
- ammonia
- wastewater
- gas
- air
- waste water
- 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.)
- Granted
Links
Landscapes
- Physical Water Treatments (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はアンモニア含有廃水の処
理方法に関し、特に、アンモニアを含有する廃水からア
ンモニアガスを放散させ、該アンモニアガスを触媒によ
り酸化分解して無害化する方法の改良に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating wastewater containing ammonia, and more particularly to an improvement in a method for detoxifying ammonia gas from wastewater containing ammonia by oxidizing and decomposing the ammonia gas by a catalyst. Is.
【０００２】[0002]
【従来の技術】従来、アンモニア含有廃水からアンモニ
アを放散させる方法として、アンモニアストリッピング
法が周知となっている。アンモニアストリッピング法に
は、２つの方法があり、具体的には、空気ストリッピン
グ法及び蒸気ストリッピング法が知られている。2. Description of the Related Art Conventionally, an ammonia stripping method has been well known as a method for releasing ammonia from wastewater containing ammonia. There are two methods in the ammonia stripping method, and specifically, an air stripping method and a steam stripping method are known.
【０００３】空気ストリッピング法は、アンモニアを含
有する廃水に空気を吹き込んでアンモニアを放散させる
方法である。この空気ストリッピング法においては、廃
水のｐＨを高めること、廃水の温度を高めること、吹き
込む空気量を多くすること（即ち、気液比を大きくする
こと）がアンモニアの除去率を高める上で非常に効果的
である。しかしながら、冬季などの気温が低い場合に
は、アンモニアの除去率が低下したりするという問題
点、廃水のｐＨを高めるためのアルカリ剤の添加コスト
が高くなるという問題点等を有している。一方、蒸気ス
トリッピング法は、アンモニア含有廃水に水蒸気を吹き
込んでアンモニアガスを放散させる方法であり、空気ス
トリッピング法のように気液比を大きくしなくても効率
よくアンモニアを除去できるが、スチ−ムコストが非常
に高くなるという問題点を有している。いずれの方法
も、放散されたアンモニアガスは、窒素ガスに酸化分解
された後に大気中に放出するものである。The air stripping method is a method in which air is blown into waste water containing ammonia to diffuse the ammonia. In this air stripping method, increasing the pH of waste water, raising the temperature of waste water, and increasing the amount of air blown in (that is, increasing the gas-liquid ratio) are extremely important factors in increasing the removal rate of ammonia. Is effective in. However, when the temperature is low such as in winter, there are problems that the removal rate of ammonia decreases, and that the cost of adding an alkaline agent for increasing the pH of wastewater increases. On the other hand, the steam stripping method is a method in which water vapor is blown into ammonia-containing waste water to diffuse ammonia gas, and ammonia can be efficiently removed without increasing the gas-liquid ratio like the air stripping method. -It has a problem that the cost is very high. In any of the methods, the diffused ammonia gas is released into the atmosphere after being oxidized and decomposed into nitrogen gas.
【０００４】また、他の技術としては該燃焼排ガスをア
ンモニア含有廃水と直接気液接触させることで、アンモ
ニアガスを放散させることも可能である しかしながら、この方法の場合には、アンモニアガスの
燃焼工程で、窒素ガスの他に、ＮＯX等が生成するため
に、該燃焼排ガスをアンモニア含有廃水に直接吹き込む
と、廃水のｐＨが低下し、アンモニアの除去率が低下す
ること、さらには廃水中のアンモニアと燃焼ガス中に含
まれるＮＯXが反応を起こし硝酸アンモニウムを生じる
新たな問題点を有するものである。As another technique, it is also possible to diffuse the ammonia gas by bringing the combustion exhaust gas into direct gas-liquid contact with the ammonia-containing wastewater. However, in the case of this method, the ammonia gas combustion step in, in addition to the nitrogen gas, in order to NO X or the like is generated and blown directly flue gas in ammonia-containing waste water, pH of the wastewater is reduced, the removal rate of ammonia is decreased, and further in the wastewater There is a new problem that ammonia reacts with NO X contained in the combustion gas to produce ammonium nitrate.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、前記従来技
術の問題点を適確に解決することを課題とするものであ
り、多量のアルカリ物質を添加する必要がなく、年間を
通じて、外気温に左右されず、しかも熱効率の高いアン
モニアストリッピング法を採用することにより、より生
産効率の高いアンモニア含有廃水の処理方法を提供する
ことを目的とするDISCLOSURE OF THE INVENTION The present invention is intended to solve the problems of the above-mentioned prior art appropriately, and it is not necessary to add a large amount of alkaline substance, and the ambient temperature can be maintained throughout the year. It is an object of the present invention to provide a method of treating ammonia-containing wastewater having higher production efficiency by adopting an ammonia stripping method that is not affected by temperature and has high thermal efficiency.
【０００６】。[0006]
【課題を解決するための手段】上記課題を解決するため
に、本発明では、アンモニアを含有する廃水に空気と蒸
気とを吹き込むことによりアンモニアガスを廃水から放
散させた後、該アンモニアガスを触媒により酸化分解す
るアンモニア含有廃水の処理方法であって、アンモニア
含有廃水に吹き込む空気として、前記アンモニアガスが
酸化分解された後の処理ガスにより加熱された空気を用
いることを特徴とするものである。In order to solve the above problems, according to the present invention, the ammonia gas is diffused from the wastewater by blowing air and steam into the wastewater containing the ammonia, and then the ammonia gas is used as a catalyst. A method for treating ammonia-containing wastewater that is oxidatively decomposed by means of the method, wherein air heated by the treatment gas after the oxidative decomposition of the ammonia gas is used as the air blown into the ammonia-containing wastewater.
【０００７】尚、上記アンモニアガスは酸化分解される
に先立ち、空気と混合されて加熱されるが、上記処理ガ
スを前記アンモニアガスと空気の加熱に用い、次いで前
記アンモニア含有廃水に吹き込む空気の加熱に用いるこ
とが好ましい。The ammonia gas is heated by being mixed with air before being oxidatively decomposed, but the treatment gas is used for heating the ammonia gas and air, and then the air blown into the ammonia-containing wastewater is heated. It is preferable to use
【０００８】また、前記アンモニアガスが酸化分解され
た後の処理ガスの一部を前記アンモニアガスと空気の混
合ガスと熱交換させ、かつ該処理ガスの残りを前記アン
モニア含有廃水に吹き込む空気と熱交換させることも可
能である。Further, a part of the processing gas after the ammonia gas is oxidatively decomposed is heat-exchanged with a mixed gas of the ammonia gas and air, and the rest of the processing gas is blown into the ammonia-containing wastewater with air and heat. It is also possible to exchange them.
【０００９】更に、アンモニアガスを効率的に放散させ
るには、前記アンモニア含有廃水中のアンモニウムイオ
ン濃度、アンモニウムイオンを除くカチオン濃度、アニ
オン濃度を測定し、上記廃水中のアニオン量を中和する
のに必要なカチオン量を求め、該カチオン量から上記廃
水中のアンモニウムイオン量を除いた量に相当するアル
カリ物質を、予め前記アンモニア含有廃水中に添加する
か、或いは前記アンモニア含有廃水からアンモニアを放
散させた後の処理水のｐＨが６〜１３となるように、予
め前記アンモニア含有廃水中にアルカリ物質を添加する
ことが好ましい。 本発明に係る処理方法を、図１に示
すフロ−概略図を用いて説明する。アンモニア含有廃水
をアンモニアストリッピング塔３から流出する処理水と
熱交換器１において熱交換し加熱した後、さらに加熱器
２で加温し、アンモニアストリッピング塔３の上部に供
給する。一方、アンモニアストリッピング塔３の下部よ
り、熱交換器４で加熱された空気と蒸気を供給し気液接
触させることにより、アンモニア含有廃水からアンモニ
アガスがストリップされアンモニアストリッピング塔３
の上部より排出される。放散したアンモニアガスは、Ｂ
１のブースターから導入される空気と混合された後、熱
交換器５で排ガス燃焼器からの処理ガスと熱交換し所定
の温度にまで昇温され、さらに排ガス燃焼器６に供給さ
れ、ここで排ガス燃焼器６に充填された触媒の作用によ
り窒素ガス等に酸化分解される。この処理ガスは熱交換
器５に導かれ、反応前ガスの昇温に用いられた後、熱交
換器４に導かれ、アンモニアストリッピング用の空気と
熱交換した後に大気へ放出され、または二次処理された
後大気へ放出される。Further, in order to efficiently diffuse ammonia gas, the ammonium ion concentration, the cation concentration excluding ammonium ions, and the anion concentration in the ammonia-containing waste water are measured to neutralize the amount of anions in the waste water. The amount of cation required for the above is calculated, and an alkaline substance corresponding to the amount obtained by removing the amount of ammonium ions in the waste water from the cation amount is added to the ammonia-containing waste water in advance, or ammonia is diffused from the ammonia-containing waste water. It is preferable to add an alkaline substance in advance to the ammonia-containing wastewater so that the pH of the treated water after the treatment becomes 6 to 13. The processing method according to the present invention will be described with reference to the flow schematic diagram shown in FIG. The ammonia-containing wastewater is heat-exchanged with the treated water flowing out from the ammonia stripping tower 3 in the heat exchanger 1, heated, further heated by the heater 2, and supplied to the upper part of the ammonia stripping tower 3. On the other hand, by supplying air and steam heated by the heat exchanger 4 from the lower part of the ammonia stripping tower 3 to make gas-liquid contact with each other, ammonia gas is stripped from the ammonia-containing wastewater, and the ammonia stripping tower 3
Is discharged from above. The diffused ammonia gas is B
After being mixed with the air introduced from the booster No. 1, the heat exchanger 5 exchanges heat with the processing gas from the exhaust gas combustor to raise the temperature to a predetermined temperature, and is further supplied to the exhaust gas combustor 6, where The catalyst filled in the exhaust gas combustor 6 is oxidized and decomposed into nitrogen gas or the like. This treated gas is introduced into the heat exchanger 5 and used to raise the temperature of the gas before the reaction, and then introduced into the heat exchanger 4 to exchange heat with the air for ammonia stripping and then released into the atmosphere. After the next treatment, it is released into the atmosphere.
【００１０】また、アンモニアストリッピング塔３から
流出する処理水をアンモニア含有廃水と混合し、加熱器
２に供給してもよい。Further, the treated water flowing out from the ammonia stripping tower 3 may be mixed with the ammonia-containing wastewater and supplied to the heater 2.
【００１１】尚、図１において破線で示した経路は、運
転開始時に用いられる経路であり、熱交換器５に高温の
処理ガスが供給されるまでの間は空気を予熱炉７に供給
することで、アンモニアガスと混合する空気の温度を高
めてから排ガス燃焼器６に供給するものである。The path shown by the broken line in FIG. 1 is a path used at the start of operation, and air is supplied to the preheating furnace 7 until the high-temperature processing gas is supplied to the heat exchanger 5. Then, the temperature of the air mixed with the ammonia gas is raised and then supplied to the exhaust gas combustor 6.
【００１２】また、排ガス燃焼器６から排出される処理
ガスは全てを熱交換器５に供給する必要はなく、バルブ
操作により熱交換器４に直接供給してもよい。また、熱
交換器５で熱交換後の処理ガスは、一部を大気に放出す
ることもできる。Further, it is not necessary to supply all the process gas discharged from the exhaust gas combustor 6 to the heat exchanger 5, and it may be directly supplied to the heat exchanger 4 by a valve operation. Further, a part of the processing gas after heat exchange in the heat exchanger 5 can be released to the atmosphere.
【００１３】アンモニアストリッピング塔３に供給され
る空気の温度としては、アンモニアガスを効率よく放散
させるという観点から、高い程よいが４０℃以上が好ま
しく、５０℃以上であればより好ましい。The temperature of the air supplied to the ammonia stripping column 3 is preferably as high as possible from the viewpoint of efficiently discharging ammonia gas, but is preferably 40 ° C. or higher, more preferably 50 ° C. or higher.
【００１４】本発明は、アンモニアストリッピング塔に
供給されるアンモニア含有廃水のアンモニア濃度を限定
するものではなく、アンモニア濃度が２０，０００ｍｇ
／ｌ以下という比較的低濃度の廃水であっても効率よく
アンモニアを除去できる。但しアンモニア濃度が低すぎ
るとアンモニアの除去効率が低下するので、１，０００
ｍｇ／ｌ以上が好ましい。The present invention does not limit the ammonia concentration of the ammonia-containing wastewater supplied to the ammonia stripping column, and the ammonia concentration is 20,000 mg.
Ammonia can be efficiently removed even with wastewater having a relatively low concentration of 1 / l or less. However, if the ammonia concentration is too low, the removal efficiency of ammonia will decrease, so 1,000
It is preferably mg / l or more.
【００１５】本発明は、排ガス燃焼器６に供給される反
応前ガスの組成（換言すれば、アンモニアガスと空気の
混合比率）を限定するものではないが、アンモニアに対
して酸素量が多過ぎる場合には、 ４ＮＨ3 ＋ ３Ｏ2 → ２Ｎ2 ＋ ６Ｈ2Ｏ という目的反応以外にも ４ＮＨ3 ＋ ５Ｏ2 → ４ＮＯ ＋ ６Ｈ2Ｏ ４ＮＨ3 ＋ ７Ｏ2 → ４ＮＯ2 ＋ ６Ｈ2Ｏ などの反応式で示される副反応が起こりやすく、ＮＯx
が生成する。反応前ガスの酸素濃度が高くなるとＮＯx
の生成量が多くなる傾向があるが、アンモニアの放散の
ために供給する空気と排ガス燃焼器６に供給する空気の
混合比率を調整することにより反応前ガスの酸素濃度を
制御できるので、ＮＯxの生成を抑制することも可能で
ある。The present invention does not limit the composition of the pre-reaction gas (in other words, the mixing ratio of ammonia gas and air) supplied to the exhaust gas combustor 6, but the amount of oxygen is too large for ammonia. In this case, in addition to the target reaction of 4NH3 + 3O2 → 2N2 + 6H2O, side reactions represented by reaction formulas such as 4NH3 + 5O2 → 4NO + 6H2O 4NH3 + 7O2 → 4NO2 + 6H2O are likely to occur, and NOx
Is generated. If the oxygen concentration of the pre-reaction gas increases, NOx
However, since the oxygen concentration of the pre-reaction gas can be controlled by adjusting the mixing ratio of the air supplied for the emission of ammonia and the air supplied to the exhaust gas combustor 6, It is also possible to suppress the generation.
【００１６】本発明において、排ガス燃焼器６に充填す
る触媒としては、特に限定するものではないが、アンモ
ニア分解触媒、即ち、触媒Ａ成分としてＴｉを含む酸化
物と触媒Ｂ成分としてバナジウム、タングステン及びモ
リブデンよりなる群から選ばれる少なくとも１種の金属
あるいは酸化物と触媒Ｃ成分として白金、パラジウム、
ロジウム、ルテニウム、イリジウム、クロム、マンガ
ン、鉄、銅よりなる群から選ばれる少なくとも１種の金
属あるいは酸化物とを含有する触媒が用いられる。 反
応前ガスの温度としては、アンモニアガスの酸化分解を
効率的に行わせるために２５〜７００℃の範囲にあるこ
とが好ましく、１００〜５００℃の範囲であればより好
ましい。ガスの空間速度は、特に限定するものではない
が、触媒の特性に応じて適宜設定すればよいが、２００
ｈｒ-1以上５，０００ｈｒ-1以下が好ましい。In the present invention, the catalyst to be filled in the exhaust gas combustor 6 is not particularly limited, but an ammonia decomposition catalyst, that is, an oxide containing Ti as the catalyst A component and vanadium, tungsten as the catalyst B component, and At least one metal or oxide selected from the group consisting of molybdenum and platinum, palladium as a catalyst C component,
A catalyst containing at least one metal or oxide selected from the group consisting of rhodium, ruthenium, iridium, chromium, manganese, iron and copper is used. The temperature of the pre-reaction gas is preferably in the range of 25 to 700 ° C, and more preferably in the range of 100 to 500 ° C in order to efficiently perform the oxidative decomposition of the ammonia gas. The gas space velocity is not particularly limited, but may be appropriately set according to the characteristics of the catalyst.
It is preferably not less than hr-1 and not more than 5,000 hr-1.
【００１７】更に本発明では、アンモニア含有廃水から
アンモニアガスを効率良くに放散させることを目的とし
て、前記アンモニア含有廃水中のアンモニアイオン濃
度、アンモニアイオンを除くカチオン濃度、アニオン濃
度を測定し、上記廃水中のアニオン量を中和するのに必
要なカチオンを求め、該カチオン量から上記廃水中のア
ンモニアイオン量を除いた量に相当するアルカリ物質
を、予め前記アンモニア含有廃水中に添加することが好
ましい。アンモニア含有廃水に含まれるアンモニアイオ
ン以外のカチオンとしては、例えばＮａ+，Ｋ+，Ｃａ2+
等が挙げられ、一方アニオンとしては、Ｃｌ-，Ｎ
Ｏ2 -，ＮＯ3 -，Ｓ2-，ＳＯ4 2-，ＣＨ3ＣＯＯ-等が挙げ
られる。なお上記アルカリ物質としては、アルカリ金属
またはアルカリ土類金属の水酸化物等が挙げられ、Ｎａ
ＯＨ，ＫＯＨ，Ｃａ（ＯＨ）2等を用いればよい。Further, in the present invention, the ammonia ion concentration, the cation concentration excluding ammonia ion, and the anion concentration in the ammonia-containing waste water are measured for the purpose of efficiently releasing the ammonia gas from the ammonia-containing waste water, It is preferable to obtain a cation necessary to neutralize the amount of anions in the medium, and to add an alkaline substance corresponding to the amount of the cations minus the amount of ammonia ions in the waste water to the ammonia-containing waste water in advance. . Examples of cations other than ammonia ions contained in ammonia-containing wastewater include Na + , K + , and Ca 2+.
And the like, while the anions include Cl − , N
O 2 − , NO 3 − , S 2− , SO 4 2− , CH 3 COO − and the like can be mentioned. Examples of the above alkaline substance include hydroxides of alkali metals or alkaline earth metals, and the like.
OH, KOH, Ca (OH) 2 or the like may be used.
【００１８】更に前記アンモニア含有廃水から放散させ
た後の処理水のｐＨを制御することによっても、アンモ
ニア含有廃水からアンモニアガスを効率的に放散させる
ことが可能であり、上記処理水のｐＨが６〜１３となる
ように予め前記アンモニア含有廃水中にアルカリ物質を
添加することが好ましい。Further, by controlling the pH of the treated water after being diffused from the ammonia-containing wastewater, the ammonia gas can be efficiently diffused from the ammonia-containing wastewater, and the pH of the treated water is 6%. It is preferable to add an alkaline substance to the ammonia-containing wastewater in advance so that the amount becomes 13 to 13.
【００１９】[0019]
【発明の効果】本発明は、以上のように構成されている
ので、熱効率の高いアンモニアストリッピング法を採用
することにより、より生産効率の高いアンモニア含有廃
水の処理方法を提供できることとなった。EFFECTS OF THE INVENTION Since the present invention is configured as described above, it is possible to provide a method for treating ammonia-containing wastewater having higher production efficiency by adopting the ammonia stripping method having high thermal efficiency.
【図１】本発明に係る処理方法の一態様を示すものであ
る。FIG. 1 shows one mode of a processing method according to the present invention.
１．熱交換器 ２．加熱器 ３．アンモニアストリッピング塔 ４．熱交換器 ５．熱交換器 ６．排ガス燃焼器 ７．予熱炉 Ｂ１〜４．ブースター 1. Heat exchanger 2. Heater 3. Ammonia stripping tower 4. Heat exchanger 5. Heat exchanger 6. Exhaust gas combustor 7. Preheating furnace B1-4. booster
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ０１Ｊ 23/63 23/84 Ａ (72)発明者 荒川 和清 兵庫県姫路市網干区興浜字西沖992番地の １ 株式会社日本触媒姫路製造所内 (72)発明者 石井 徹 兵庫県姫路市網干区興浜字西沖992番地の １ 株式会社日本触媒触媒研究所内─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification number Reference number within the agency FI Technical indication location B01J 23/63 23/84 A (72) Inventor Kasei Kiyoshi Arakawa Kazumi Kiyoshi Arakawa, Himeji City, Hyogo Prefecture No. 1 Inside the Nippon Shokubai Co., Ltd. Himeji Plant (72) Inventor Toru Ishii No. 992 Nishioki Okihama, Aboshi-ku, Himeji City, Hyogo Prefecture
Claims (5)
とを吹き込むことによりアンモニアガスを廃水から放散
させた後、該アンモニアガスを触媒により酸化分解する
アンモニア含有廃水の処理方法であって、アンモニア含
有廃水に吹込む空気として、前記アンモニアガスが酸化
分解された後の処理ガスにより熱交換し加熱された空気
を用いることを特徴とするアンモニア含有廃水の処理方
法。1. A method for treating ammonia-containing wastewater, which comprises blowing air and steam into wastewater containing ammonia to disperse the ammonia gas from the wastewater, and then oxidizing and decomposing the ammonia gas with a catalyst. A method for treating ammonia-containing wastewater, characterized in that as the air blown into the wastewater, air heated by heat exchange with the treatment gas after the oxidative decomposition of the ammonia gas is used.
を吹き込むことによりアンモニアガスを廃水から放散さ
せた後、該アンモニアガスを触媒により酸化分解するア
ンモニア含有廃水の処理方法であって、前記アンモニア
ガスが酸化分解された後の処理ガスを、前記アンモニア
ガスと空気の混合ガスと熱交換させた後、次いで前記ア
ンモニア含有廃水に吹き込む空気と熱交換させることを
特徴とするアンモニア含有廃水の処理方法。2. A method for treating ammonia-containing wastewater, which comprises the step of blowing air and steam into wastewater containing ammonia to disperse the ammonia gas from the wastewater, and then oxidizing and decomposing the ammonia gas with a catalyst. The method for treating ammonia-containing wastewater, wherein the treatment gas after being oxidatively decomposed is heat-exchanged with a mixed gas of the ammonia gas and air, and then heat-exchanged with air blown into the ammonia-containing wastewater.
を吹き込むことによりアンモニアガスを廃水から放散さ
せた後、該アンモニアガスを触媒により酸化分解するア
ンモニア含有廃水の処理方法であって、前記アンモニア
ガスが酸化分解された後の処理ガスの一部を前記アンモ
ニアガスと空気の混合ガスと熱交換させ、かつ該処理ガ
スの残りを前記アンモニア含有廃水に吹き込む空気と熱
交換させることを特徴とするアンモニア含有廃水の処理
方法。3. A method for treating ammonia-containing wastewater, which comprises discharging air from the wastewater by blowing air and steam into the wastewater containing ammonia, and then oxidizing and decomposing the ammonia gas by a catalyst. Ammonia characterized in that part of the treated gas after being oxidatively decomposed is heat-exchanged with a mixed gas of the ammonia gas and air, and the rest of the treated gas is heat-exchanged with air blown into the ammonia-containing wastewater. Treatment method of wastewater containing.
ムイオン濃度、アンモニウムイオンを除くカチオン濃
度、アニオン濃度を測定し、上記廃水中のアニオン量を
中和するのに必要なカチオン量を求め、該カチオン量か
ら上記廃水中のアンモニウムイオン量を除いた量に相当
するアルカリ物質を、予め前記アンモニア含有廃水中に
添加する請求項１、２または３に記載のアンモニア含有
廃水の処理方法。4. The ammonium ion concentration, the cation concentration excluding ammonium ions, and the anion concentration in the ammonia-containing wastewater are measured to obtain the cation amount necessary to neutralize the anion amount in the wastewater. 4. The method for treating ammonia-containing wastewater according to claim 1, 2 or 3, wherein an alkaline substance corresponding to the amount of ammonium ions in the wastewater is added to the ammonia-containing wastewater in advance.
を放散させた後の処理水のｐＨが６〜１３となるよう
に、予め前記アンモニア含有廃水中にアルカリ物質を添
加する請求項１、２または３に記載アンモニア含有廃水
の処理方法。5. The method according to claim 1, 2 or 3, wherein an alkaline substance is added in advance to the ammonia-containing waste water so that the pH of the treated water after the ammonia is discharged from the ammonia-containing waste water becomes 6 to 13. A method for treating wastewater containing ammonia.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01188095A JP3698748B2 (en) | 1995-01-27 | 1995-01-27 | Ammonia-containing wastewater treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01188095A JP3698748B2 (en) | 1995-01-27 | 1995-01-27 | Ammonia-containing wastewater treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08197039A true JPH08197039A (en) | 1996-08-06 |
| JP3698748B2 JP3698748B2 (en) | 2005-09-21 |
Family
ID=11790054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01188095A Expired - Lifetime JP3698748B2 (en) | 1995-01-27 | 1995-01-27 | Ammonia-containing wastewater treatment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3698748B2 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002014222A1 (en) * | 2000-08-10 | 2002-02-21 | Babcock-Hitachi Kabushiki Kaisha | Process and apparatus for treating ammonia-containing waste water |
| WO2002036496A1 (en) * | 1999-05-07 | 2002-05-10 | Babcock-Hitachi Kabushiki Kaisha | Method for purifying effluent water containing ammonia |
| JP2005214572A (en) * | 2004-02-02 | 2005-08-11 | Tokyo Electric Power Co Inc:The | Purifier for waste ammonia water and ammonia refrigerator equipped with the purifier |
| KR100733689B1 (en) * | 2000-08-09 | 2007-06-28 | 바브콕-히다찌 가부시끼가이샤 | Method and apparatus for treating ammonia-containing effluent water |
| JP2009066572A (en) * | 2007-09-18 | 2009-04-02 | Mitsubishi Kakoki Kaisha Ltd | Ammonia removing apparatus, and apparatus for and method of treating organic waste using the ammonia removing apparatus |
| CN101830532A (en) * | 2010-05-12 | 2010-09-15 | 正和集团股份有限公司 | Acrylic acid wastewater preprocessing process |
| JP2014097457A (en) * | 2012-11-14 | 2014-05-29 | Tsukishima Kankyo Engineering Ltd | Treatment method and treatment apparatus of effluent |
| JP2014144402A (en) * | 2013-01-28 | 2014-08-14 | Ihi Corp | Diffusion system |
| JP2018138496A (en) * | 2017-02-24 | 2018-09-06 | 東京瓦斯株式会社 | Fertilizer production apparatus, and fertilizer production method |
| CN114751534A (en) * | 2022-06-15 | 2022-07-15 | 江苏新聚环保科技有限公司 | Ammonia gas treatment method by aeration stripping and catalytic combustion |
-
1995
- 1995-01-27 JP JP01188095A patent/JP3698748B2/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002036496A1 (en) * | 1999-05-07 | 2002-05-10 | Babcock-Hitachi Kabushiki Kaisha | Method for purifying effluent water containing ammonia |
| KR100733689B1 (en) * | 2000-08-09 | 2007-06-28 | 바브콕-히다찌 가부시끼가이샤 | Method and apparatus for treating ammonia-containing effluent water |
| WO2002014222A1 (en) * | 2000-08-10 | 2002-02-21 | Babcock-Hitachi Kabushiki Kaisha | Process and apparatus for treating ammonia-containing waste water |
| JP2005214572A (en) * | 2004-02-02 | 2005-08-11 | Tokyo Electric Power Co Inc:The | Purifier for waste ammonia water and ammonia refrigerator equipped with the purifier |
| JP2009066572A (en) * | 2007-09-18 | 2009-04-02 | Mitsubishi Kakoki Kaisha Ltd | Ammonia removing apparatus, and apparatus for and method of treating organic waste using the ammonia removing apparatus |
| CN101830532A (en) * | 2010-05-12 | 2010-09-15 | 正和集团股份有限公司 | Acrylic acid wastewater preprocessing process |
| JP2014097457A (en) * | 2012-11-14 | 2014-05-29 | Tsukishima Kankyo Engineering Ltd | Treatment method and treatment apparatus of effluent |
| JP2014144402A (en) * | 2013-01-28 | 2014-08-14 | Ihi Corp | Diffusion system |
| JP2018138496A (en) * | 2017-02-24 | 2018-09-06 | 東京瓦斯株式会社 | Fertilizer production apparatus, and fertilizer production method |
| CN114751534A (en) * | 2022-06-15 | 2022-07-15 | 江苏新聚环保科技有限公司 | Ammonia gas treatment method by aeration stripping and catalytic combustion |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3698748B2 (en) | 2005-09-21 |
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