JPH06134486A - Nitrate and nitrite nitrogen removing equipment - Google Patents
Nitrate and nitrite nitrogen removing equipmentInfo
- Publication number
- JPH06134486A JPH06134486A JP4312777A JP31277792A JPH06134486A JP H06134486 A JPH06134486 A JP H06134486A JP 4312777 A JP4312777 A JP 4312777A JP 31277792 A JP31277792 A JP 31277792A JP H06134486 A JPH06134486 A JP H06134486A
- Authority
- JP
- Japan
- Prior art keywords
- nitrogen
- partition plate
- removal chamber
- chamber
- filter medium
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、硝酸性及び亜硝酸性窒
素を含む地下水、下水、産業廃水、河川水、湖沼水、伏
流水などから窒素分及び栄養源として添加したエタノー
ルなどを含めて有機物を効率よく除去しうる硝酸性及び
亜硝酸性窒素除去装置に関する。TECHNICAL FIELD The present invention includes nitrogen added from groundwater, sewage, industrial wastewater, river water, lake water, underground water containing nitrate and nitrite nitrogen, and ethanol added as a nutrient source. The present invention relates to a nitric acid- and nitrite-type nitrogen removing device capable of efficiently removing organic substances.
【０００２】[0002]
【従来の技術】最近では、環境汚染が広がり、地下水も
窒素化合物で汚染されていることがある。このような地
下水を浄化する従来の方法としては、イオン交換法が挙
げられる。イオン交換法は、強塩基性イオン交換樹脂を
充填したカラムに硝酸性及び亜硝酸性窒素で汚染されて
いる地下水を下向流で通水し、カラム内のイオン交換樹
脂のＣｌ- と地下水中のＮＯ3 - 又はＮＯ2 - が交換さ
れることによりＮＯ3 -又はＮＯ2 - を除去する方法で
ある。このイオン交換樹脂は、交換機能が低下すると再
生を行わなければならない。再生は食塩水を上向流で通
水することにより食塩水中のＣｌ- と樹脂に吸着したＮ
Ｏ3 - 又はＮＯ2 - をイオン交換することにより行われ
る。そのため、再生の際に多量の食塩が使用され、かつ
塩濃度の高い廃水が排出され、放流先の確保が困難であ
るという欠点があった。2. Description of the Related Art Recently, environmental pollution has spread, and groundwater is sometimes polluted with nitrogen compounds. A conventional method for purifying such groundwater is an ion exchange method. In the ion exchange method, groundwater contaminated with nitrate and nitrite nitrogen is passed through a column packed with a strongly basic ion exchange resin in a downward flow, and Cl − of the ion exchange resin in the column and groundwater It is a method of removing NO 3 − or NO 2 − by exchanging NO 3 − or NO 2 − . This ion exchange resin must be regenerated when its exchange function deteriorates. Regeneration is carried out by passing saline in an upward flow, so that Cl − in the saline and N adsorbed on the resin
It is carried out by ion exchange of O 3 − or NO 2 − . Therefore, when regenerating, a large amount of salt is used, waste water having a high salt concentration is discharged, and it is difficult to secure a discharge destination.
【０００３】また、下水などで広く利用されている生物
学的脱窒技術は、長い反応時間と広い敷地面積を必要と
するという欠点があった。Further, the biological denitrification technology which is widely used for sewage has a drawback that it requires a long reaction time and a large site area.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、前記従来技
術の欠点を解消し、廃水の発生量が少なく、短時間に効
率よく処理を達成できる設置スペースの小さい硝酸性及
び亜硝酸性窒素除去装置を提供することを目的とする。DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned drawbacks of the prior art, removes the amount of wastewater, and removes nitric acid and nitrite nitrogen with a small installation space that enables efficient treatment in a short time. The purpose is to provide a device.
【０００５】[0005]
【課題を解決するための手段】本発明は、硝酸性及び亜
硝酸性窒素を除去する濾材層と栄養源として添加した有
機物を除去する濾材層を一つの装置内に一体化すること
によって上記課題を達成したものである。すなわち、本
発明による硝酸性及び亜硝酸性窒素除去装置は、処理槽
を仕切板によって上下に分割し、一方を微生物を付着さ
せた粒状濾材を充填した窒素除去室とし、他方を微生物
を付着させた粒状濾材を充填した有機物除去室とし、窒
素除去室からの処理水を有機物除去室へ導入する連絡管
を設けたことを特徴とする。According to the present invention, the above-mentioned problems are solved by integrating a filter medium layer for removing nitrate and nitrite nitrogen and a filter medium layer for removing organic substances added as a nutrient source in one device. Has been achieved. That is, the nitric acid and nitrite nitrogen removing apparatus according to the present invention, the treatment tank is divided into upper and lower by a partition plate, one is a nitrogen removing chamber filled with a granular filter material to which microorganisms are attached, and the other is to attach microorganisms. The organic substance removing chamber is filled with the granular filter medium, and a connecting pipe for introducing the treated water from the nitrogen removing chamber to the organic substance removing chamber is provided.
【０００６】本発明の装置においては、仕切板の上部
を、上向流で濾材層を通過させる窒素除去室とし、その
上部から仕切板の下部の有機物除去室へ導水する連絡管
を付設し、仕切板の中央部に空気排出管を設けるか、又
は仕切板の上部を有機物除去室とし、仕切板の下部を、
上向流で濾材層を通過させる窒素除去室とし、仕切板の
中央部に連絡管を設けてもよい。In the apparatus of the present invention, the upper part of the partition plate is used as a nitrogen removal chamber for passing the filter medium layer in an upward flow, and a connecting pipe for guiding water from the upper part to the organic matter removal chamber under the partition plate is attached. Provide an air exhaust pipe in the center of the partition plate, or use the upper part of the partition plate as an organic matter removal chamber and the lower part of the partition plate as
A nitrogen removing chamber for passing the filter medium layer in an upward flow may be provided, and a connecting pipe may be provided in the central portion of the partition plate.
【０００７】本発明において、濾材としては特に制限は
なく、様々なものを用いることができ、例えば、アンス
ラサイト、砂、砂利、粒状活性炭などが挙げられる。In the present invention, the filter medium is not particularly limited and various ones can be used, and examples thereof include anthracite, sand, gravel and granular activated carbon.
【０００８】[0008]
【実施例】次に、図面を参照して本発明を実施例に基づ
いて詳細に説明するが、本発明はこれによって制限され
るものではない。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the drawings, but the present invention is not limited thereto.
【０００９】図１は、本発明の一実施例を示す窒素除去
装置の系統図である。図１において井戸１に設置された
取水ポンプ２により導水された地下水は、流入管３を経
てアンスラサイトなどの粒状濾材の充填層４を有する硝
酸性及び亜硝酸性窒素除去室（以下、単に窒素除去室と
称する）５に導かれる。粒状濾材の表面には、微生物を
付着させておく。流入管３には、栄養源であるエチルア
ルコールなどの有機物が注入ポンプ６より注入管７を経
て注入される。窒素除去室５の下部より流入した地下水
及び有機物は、粒状濾材の充填層を上向流で通過する間
に濾材に付着した微生物の作用を受け、地下水中の硝酸
性及び亜硝酸性窒素が除去され、トラフ８より溢流し、
連絡管９を経て、微生物が付着した粒状濾材の充填層１
０を有する有機物除去室１１に導水される。有機物除去
室１１では、注入管７から添加された栄養源のうち窒素
除去室５で反応せずに残留している未反応の有機物及び
原水に含まれていた有機物が除去される。FIG. 1 is a system diagram of a nitrogen removing apparatus showing an embodiment of the present invention. In FIG. 1, groundwater conducted by an intake pump 2 installed in a well 1 passes through an inflow pipe 3 and has a nitric and nitrite nitrogen removal chamber (hereinafter referred to simply as nitrogen) having a packed bed 4 of granular filter media such as anthracite. (Referred to as a removal chamber) 5. Microorganisms are attached to the surface of the granular filter medium. An organic substance such as ethyl alcohol, which is a nutrient source, is injected into the inflow pipe 3 from an injection pump 6 through an injection pipe 7. Groundwater and organic matter that have flowed in from the lower part of the nitrogen removal chamber 5 are subjected to the action of microorganisms adhering to the filter medium while passing through the packed bed of the granular filter medium in an upward flow, so that nitrate and nitrite nitrogen in the groundwater are removed. And overflowed from trough 8,
Packing layer 1 of granular filter medium to which microbes have adhered via connecting pipe 9.
Water is introduced to the organic substance removal chamber 11 having zero. In the organic substance removing chamber 11, the unreacted organic substances remaining without reacting in the nitrogen removing chamber 5 and the organic substances contained in the raw water among the nutrient sources added from the injection pipe 7 are removed.
【００１０】有機物除去室１１には、溶存酸素補給のた
めの空気がブロワー又はコンプレッサー１２により空気
管１３を経て供給される。また、有機物除去室１１に供
給された空気を放出する空気排出管１４が仕切板１５に
取り付けられている。この空気排出管１４は、窒素除去
室５を貫通し、大気開放となっている。また、仕切板１
５は傾斜させて、空気を排出させやすくなっている。さ
らに、この空気排出管１４は、粒状濾材に懸濁物が捕捉
され、濾過抵抗が増加したとき、有機物除去室１１の圧
力上昇を逃がす役目もはたすものである。硝酸性及び亜
硝酸性窒素を除去され、有機物除去室１１に流入した地
下水は、粒状濾材の充填層１０を下向流で通過する間に
浄化され、流出管１６を経て流出する。Air for supplying dissolved oxygen is supplied to the organic substance removing chamber 11 by a blower or a compressor 12 through an air pipe 13. Further, an air discharge pipe 14 that discharges the air supplied to the organic substance removal chamber 11 is attached to the partition plate 15. The air exhaust pipe 14 penetrates the nitrogen removing chamber 5 and is open to the atmosphere. Also, the partition plate 1
5 is inclined so that air can be easily discharged. Further, the air discharge pipe 14 also serves to release the pressure increase in the organic matter removal chamber 11 when the suspended matter is captured by the granular filter medium and the filtration resistance increases. The groundwater from which the nitric acid and the nitrite nitrogen have been removed and which has flowed into the organic matter removal chamber 11 is purified while passing through the packed bed 10 of the granular filter medium in a downward flow, and flows out through the outflow pipe 16.
【００１１】粒状濾材の充填層４内で死滅した微生物あ
るいは地下水中の懸濁物により濾過抵抗の上昇があった
場合、又は粒状濾材の充填層１０により捕捉された懸濁
物により濾過抵抗の上昇があった場合には、浄水池又は
配水池１８に設置される逆洗ポンプ１９より逆洗管２０
を経て導入された浄水が窒素除去室５の下部又は有機物
除去室１１の下部より流入し、粒状濾材を洗浄する。充
填層４の粒状濾材を洗浄した廃水は、トラフ８を通って
排出される。洗浄廃水は、流出管９及び排水管２１に取
り付けられた自動弁２２及び２３の切り換えによって排
出される。他方、充填層１０の粒状濾材を洗浄した廃水
は、トラフ２４及び排水管２５を通って排出される。こ
のとき、排水管２５に取り付けられた自動弁２６を開と
する。When there is an increase in filtration resistance due to dead microorganisms or a suspension in ground water in the packed bed 4 of granular filter media, or an increase in filtration resistance due to the suspension trapped by the packed bed 10 of granular filter media. If there is a backwash pipe 20 from the backwash pump 19 installed in the water purification reservoir or distribution reservoir 18
The purified water introduced through the above flows in from the lower part of the nitrogen removing chamber 5 or the lower part of the organic substance removing chamber 11 to wash the granular filter medium. The waste water that has washed the granular filter medium of the packed bed 4 is discharged through the trough 8. The cleaning wastewater is discharged by switching the automatic valves 22 and 23 attached to the outflow pipe 9 and the drain pipe 21. On the other hand, the wastewater obtained by washing the granular filter medium of the packed bed 10 is discharged through the trough 24 and the drain pipe 25. At this time, the automatic valve 26 attached to the drain pipe 25 is opened.
【００１２】また、窒素除去室５の逆洗管２０には自動
弁２７、有機物除去室１１の逆洗管には自動弁２８が取
り付けられており、切替えが可能となっている。また、
水洗浄に先立ってブロワー又はコンプレッサー１２によ
り空気管１３を経て窒素除去室５又は有機物除去室１１
の各々下部より空気を導入し、空気洗浄を行うことがで
きる。空気管１３には、自動弁２９及び３０が取り付け
られており、切替えが可能となっている。Further, an automatic valve 27 is attached to the backwash pipe 20 of the nitrogen removing chamber 5 and an automatic valve 28 is attached to the backwash pipe of the organic substance removing chamber 11 so that they can be switched. Also,
Prior to washing with water, a blower or compressor 12 is used to pass through an air pipe 13 to remove nitrogen 5 or remove organic matter 11.
Air can be washed by introducing air from the lower part of each. Automatic valves 29 and 30 are attached to the air pipe 13 and can be switched.
【００１３】図２は、本発明の他の実施例を示す窒素除
去装置の系統図である。図２に示した装置は、仕切板１
５の上部を有機物除去室１１とし、下部を窒素除去室５
とした点で図１に示した装置と異なる。窒素除去室５と
有機物除去室１１とは連絡管３１によって連絡してお
り、窒素除去室５で硝酸性及び亜硝酸性窒素が除去され
た地下水は、連絡管３１を経て有機物除去室１１へ導入
される。FIG. 2 is a system diagram of a nitrogen removing apparatus showing another embodiment of the present invention. The device shown in FIG. 2 has a partition plate 1
The upper part of 5 is the organic substance removing chamber 11, and the lower part is the nitrogen removing chamber 5.
Is different from the device shown in FIG. The nitrogen removal chamber 5 and the organic matter removal chamber 11 are connected to each other by a communication pipe 31, and the groundwater from which the nitric acid and nitrite nitrogen have been removed in the nitrogen removal chamber 5 is introduced into the organic matter removal chamber 11 via the communication pipe 31. To be done.
【００１４】前記実施例においては、硝酸性及び亜硝酸
性窒素により汚染された地下水の浄化について説明した
が、これは下水、産業排水、河川水、湖沼水、伏流水に
も全く同様に適用することができる。また、前記実施例
では、窒素除去室を上向流、有機物除去室を下向流とし
て説明したが、これはその逆の流通方式とすることもで
きる。In the above embodiments, the purification of groundwater contaminated with nitrate and nitrite nitrogen was explained, but this applies to sewage, industrial wastewater, river water, lake water, and underground water in exactly the same way. be able to. Further, in the above-mentioned embodiment, the nitrogen removal chamber is described as an upward flow and the organic matter removal chamber is described as a downward flow. However, the reverse flow system may be used.
【００１５】[0015]
【発明の効果】本発明の装置は、硝酸性及び亜硝酸性窒
素除去部と有機物除去部とが一体化された構成となって
いるので、設置スペースが小さい、コンパクトな装置で
あり、しかも効率がよく短時間で硝酸性及び亜硝酸性窒
素及び有機物を除去することができる。また、本発明の
装置を用いると、粒状ろ材の充填層の逆洗によって廃水
が発生するが、この廃水は別途、放流可能なレベルまで
容易に処理することができる。Since the apparatus of the present invention has a structure in which the nitric acid / nitrite nitrogen removing section and the organic matter removing section are integrated, it is a compact apparatus with a small installation space and is efficient. It can remove nitrate and nitrite nitrogen and organic substances in a short time. Further, when the apparatus of the present invention is used, waste water is generated by backwashing the packed bed of the granular filter medium, but this waste water can be separately treated to a level at which it can be discharged.
【図１】本発明の一実施例を示す硝酸性及び亜硝酸性窒
素除去装置の系統図である。FIG. 1 is a systematic diagram of a nitrate- and nitrite-nitrogen removing device showing an embodiment of the present invention.
【図２】本発明の他の実施例を示す硝酸性及び亜硝酸性
窒素除去装置の系統図である。FIG. 2 is a system diagram of a nitric acid- and nitrite-nitrogen removal device showing another embodiment of the present invention.
１ 井戸 ４ 充填層 ５ 窒素除去室 ６ 注入ポンプ ８ トラフ ９ 連絡管 １０ 充填層 １１ 有機物除去室 １３ 空気管 １４ 空気排出管 １５ 仕切板 １６ 流出管 １９ 逆洗ポンプ ２１ 排水管 ２４ トラフ ３１ 連絡管 1 Well 4 Packed Bed 5 Nitrogen Removal Chamber 6 Injection Pump 8 Trough 9 Communication Pipe 10 Packed Bed 11 Organic Substance Removal Chamber 13 Air Pipe 14 Air Discharge Pipe 15 Partition Plate 16 Outflow Pipe 19 Backwash Pump 21 Drain Pipe 24 Trough 31 Communication Pipe
Claims (3)
一方を微生物を付着させた粒状濾材を充填した窒素除去
室とし、他方を微生物を付着させた粒状濾材を充填した
有機物除去室とし、窒素除去室からの処理水を有機物除
去室へ導入する連絡管を設けたことを特徴とする硝酸性
及び亜硝酸性窒素除去装置。1. A processing tank is divided into upper and lower parts by a partition plate,
One is a nitrogen removal chamber filled with granular filter media with microorganisms attached, and the other is an organic matter removal chamber filled with granular filter media with microorganisms attached, and a connecting pipe that introduces treated water from the nitrogen removal chamber to the organic substance removal chamber. A nitric acid- and nitrite-type nitrogen removing device characterized by being provided.
させる窒素除去室とし、その上部から仕切板の下部の有
機物除去室へ導水する連絡管を付設し、仕切板の中央部
に空気排出管を設けた請求項１記載の硝酸性及び亜硝酸
性窒素除去装置。2. The upper part of the partition plate is a nitrogen removal chamber for passing the filter medium layer in an upward flow, and a connecting pipe for guiding water from the upper part to the organic matter removal chamber under the partition plate is attached, and the central part of the partition plate is provided. An apparatus for removing nitric acid and nitrite nitrogen according to claim 1, further comprising an air discharge pipe.
板の下部を、上向流で濾材層を通過させる窒素除去室と
し、仕切板の中央部に連絡管を設けた請求項１記載の硝
酸性及び亜硝酸性窒素除去装置。3. An organic substance removing chamber is provided at an upper part of the partition plate, a nitrogen removing chamber is provided at a lower part of the partition plate to allow the filter medium layer to pass through in an upward flow, and a connecting pipe is provided in a central part of the partition plate. Nitrate and nitrite nitrogen removal equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04312777A JP3127631B2 (en) | 1992-10-28 | 1992-10-28 | Nitrate and nitrite nitrogen removal equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04312777A JP3127631B2 (en) | 1992-10-28 | 1992-10-28 | Nitrate and nitrite nitrogen removal equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06134486A true JPH06134486A (en) | 1994-05-17 |
| JP3127631B2 JP3127631B2 (en) | 2001-01-29 |
Family
ID=18033288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04312777A Expired - Fee Related JP3127631B2 (en) | 1992-10-28 | 1992-10-28 | Nitrate and nitrite nitrogen removal equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3127631B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002292396A (en) * | 2001-03-30 | 2002-10-08 | Sumitomo Heavy Ind Ltd | Biological denitrification apparatus |
| KR100424092B1 (en) * | 2000-12-11 | 2004-03-24 | 주식회사 에코젠 | Apparatus for treating nitrate nitrogen |
| KR100927178B1 (en) * | 2009-04-17 | 2009-11-18 | 주식회사 신양아이이에스 | Advanced treatment apparatus for sewage and wastewater using single reactor |
| JP2011104496A (en) * | 2009-11-16 | 2011-06-02 | Nissin Electric Co Ltd | Biological contact filtration device and groundwater purification system |
-
1992
- 1992-10-28 JP JP04312777A patent/JP3127631B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100424092B1 (en) * | 2000-12-11 | 2004-03-24 | 주식회사 에코젠 | Apparatus for treating nitrate nitrogen |
| JP2002292396A (en) * | 2001-03-30 | 2002-10-08 | Sumitomo Heavy Ind Ltd | Biological denitrification apparatus |
| KR100927178B1 (en) * | 2009-04-17 | 2009-11-18 | 주식회사 신양아이이에스 | Advanced treatment apparatus for sewage and wastewater using single reactor |
| JP2011104496A (en) * | 2009-11-16 | 2011-06-02 | Nissin Electric Co Ltd | Biological contact filtration device and groundwater purification system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3127631B2 (en) | 2001-01-29 |
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