JP3089297B2 - Post-treatment equipment for anaerobic sewage treatment - Google Patents
Post-treatment equipment for anaerobic sewage treatmentInfo
- Publication number
- JP3089297B2 JP3089297B2 JP6894498A JP6894498A JP3089297B2 JP 3089297 B2 JP3089297 B2 JP 3089297B2 JP 6894498 A JP6894498 A JP 6894498A JP 6894498 A JP6894498 A JP 6894498A JP 3089297 B2 JP3089297 B2 JP 3089297B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- contact material
- sulfur
- hydrogen sulfide
- aerobic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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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
- Biological Treatment Of Waste Water (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【発明の属する技術分野】本発明は、バイオスクラバ一
と、好気性濾床と、沈降槽と、バイオスクラバーを通過
した循環水は好気性濾床を通過した後沈降槽に戻る循環
経路とを備え、嫌気処理後の流出水の有機物と窒素を低
減させ、消化ガス中の硫化水素を除去する嫌気性汚水処
理用後処理装置に関する。The present invention relates to a bioscrubber, an aerobic filter bed, a sedimentation tank, and a circulation path for circulating water passing through the bioscrubber and returning to the sedimentation tank after passing through the aerobic filter bed. The present invention relates to a post-treatment device for anaerobic sewage treatment for reducing organic matter and nitrogen in effluent water after anaerobic treatment and removing hydrogen sulfide in digestive gas.
【０００２】[0002]
【従来の技術】嫌気性汚水処理技術は、ＵＡＳＢ（上向
流嫌気性汚泥床）法等の高性能リアクター（反応槽）の
実用化などによりエネルギ一消費と余剰汚泥の少ない処
理プロセスとして急速に普及しつつある。しかしなが
ら、嫌気性処理には各種の問題点も残されている。2. Description of the Related Art Anaerobic sewage treatment technology has rapidly become a treatment process that consumes less energy and has less excess sludge due to the practical use of high-performance reactors (reaction tanks) such as the UASB (upflow anaerobic sludge bed) method. Spreading. However, various problems remain in the anaerobic treatment.
【０００３】[0003]
【発明が解決しようとする課題】嫌気性処理には、以下
に挙げるような問題点がある。 ．嫌気性処理によって発生する消化ガス中には硫化水
素が含まれるため、ガスを利用するためには脱硫が必要
である。しかし、従来の脱硫法では吸着剤等を使用する
ためコストがかかる上に、吸着剤の交換作業も負担とな
る。 ．嫌気性処理後の流出水中に高濃度のアンモニアが含
まれる場合、アンモニアの硝化までは後段に好気性リア
クター（反応槽）を配置することで比較的容易に行うこ
とできる。しかし、硝酸の脱窒まで行おうとすると、脱
窒に必要な有機物濃度が嫌気性処理によって低下してい
るため、充分な脱窒反応が進行しないことがある。 ．一般に、嫌気性処理単独では放流可能な水質までに
はならない。The anaerobic treatment has the following problems. . Since hydrogen sulfide is contained in the digestive gas generated by the anaerobic treatment, desulfurization is required to use the gas. However, in the conventional desulfurization method, an adsorbent or the like is used, so that the cost is high and the work of replacing the adsorbent is burdensome. . When high-concentration ammonia is contained in the effluent water after the anaerobic treatment, the nitrification of ammonia can be relatively easily performed by arranging an aerobic reactor (reaction tank) at a later stage. However, if it is attempted to denitrify nitric acid, a sufficient denitrification reaction may not proceed because the concentration of organic substances required for denitrification is reduced by the anaerobic treatment. . Generally, anaerobic treatment alone does not result in water quality that can be discharged.
【０００４】既往の関連技術は以下の通りである。 ａ．スラリ一消化槽から発生する消化ガスの脱硫装置 プラスチック接触材を充填した反応槽の下部から消化ガ
スと空気を通気し、上部から消化後のスラリーを散水
し、硫化水素の生物的酸化を図る装置がすでにあるが、
この装置は脱硫のみを目的としている。 ｂ．スクラバーと活性汚泥処理装置による脱硫装置 嫌気性汚水処理装置から発生する消化ガス中の硫化水素
をスクラバーで水に吸収させ、この液を活性汚泥法等の
好気性汚水処理装置で処理して硫化水素を硫酸に酸化す
る方法が開発されている。しかし、この方法は硫化水素
の除去のみを目的としている。[0004] The related related arts are as follows. a. Desulfurization device for digestion gas generated from slurry digestion tank Digestion gas and air are passed from the lower part of the reaction tank filled with plastic contact material, and the digested slurry is sprinkled from the upper part to biologically oxidize hydrogen sulfide. Already exists,
This device is intended only for desulfurization. b. Desulfurization equipment with scrubber and activated sludge treatment equipment Hydrogen sulfide in digestive gas generated from anaerobic sewage treatment equipment is absorbed by water with a scrubber, and this liquid is treated with an aerobic sewage treatment equipment such as activated sludge method. A method has been developed to oxidize to sulfuric acid. However, this method is only intended for removing hydrogen sulfide.
【０００５】ｃ．メタンを電子供与体とする脱窒装置 好気性の活性汚泥処理槽、散水濾床、流動床等にメタン
と空気を通気し、メタンを利用した脱窒を図る装置があ
る。しかし、この装置は脱窒のみを目的とするもので、
消化ガスの脱硫は目的としていない。 ｄ．嫌気処理後の有機物の低減 嫌気処理後の流出水の有機物低減を目的とした好気性の
各種処理装置（好気性濾床法、接触酸化法、活性汚泥法
等）が実用化している。しかし、この装置は流出水の有
機物低減のみを目的としている。C. Denitrification equipment using methane as an electron donor There is a denitrification equipment utilizing methane by passing methane and air through an aerobic activated sludge treatment tank, sprinkling filter bed, fluidized bed and the like. However, this device is only for denitrification,
Desulfurization of digestive gas is not aimed. d. Reduction of organic matter after anaerobic treatment Various aerobic treatment apparatuses (aerobic filter bed method, contact oxidation method, activated sludge method, etc.) for reducing organic matter of effluent water after anaerobic treatment have been put to practical use. However, this device is only intended for organic matter reduction of the effluent.
【０００６】本発明は上記の各問題点を同時に解決する
と共に、従来なかった新しいシステムの嫌気性汚水処理
用後処理装置を提供することを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems at the same time, and to provide a post-treatment device for anaerobic sewage treatment of a new system which has not existed before.
【０００７】[0007]
【課題を解決するための手段】上記の目的を達成するた
めに本発明は、密閉容器の中に接触材が層状に充填さ
れ、上部より沈降槽の上澄水が散水されて循環し、下部
より空気と嫌気性処理槽から発生した消化ガスが通気さ
れ、この消化ガス中の硫化水素が接触材層を通過すると
共に、循環水中に吸収され、また接触材表面に増殖した
硫黄酸化細菌によって硫黄に酸化され、この酸化に必要
な酸素は通気された空気と循環水中に含まれる溶存酸素
によって供給され、接触材表面にはメタン酸化細菌も増
殖し、この菌群により消化ガス中のメタンの一部は酸素
と反応して脱窒反応の電子供与体となる有機物が形成さ
れ、この有機物と硫化水素及び循環水中の残存有機物を
利用して脱窒細菌が硝酸を窒素ガスにまで還元して窒素
を除去するバイオスクラバ一と、上下が大気開放の構造
を有し、内部に接触材を充墳した反応槽であり、上部よ
り嫌気性処理槽からの流出水を散水し、この流出水中の
残存有機物の一部は接触材上に増殖した好気性微生物に
より酸化分解され、アンモニアは硝化細菌により硝酸ま
たは亜硝酸に酸化され、上記バイオスクラバ一から流入
する溶存硫化水素または硫黄粒は硫黄酸化細菌により硫
酸となり処理水中に含有され流出する好気性濾床と、上
記バイオスクラバ一及び好気性濾床の接触材から剥離し
た生物膜が沈澱分離されて汚泥として排出され、上澄水
は処理水となり、その一部は循環水としてバイオスクラ
バ一に散水される沈降槽と、上記バイオスクラバーを通
過した循環水は好気性濾床を通過した後沈降槽に戻る循
環経路と、を備えていることを特徴としている。In order to achieve the above-mentioned object, the present invention provides a method in which a closed container is filled with a contact material in a layered manner, and the supernatant water of a settling tank is sprinkled from the upper part and circulated, while the closed part is circulated from the lower part. The air and digestive gas generated from the anaerobic treatment tank are ventilated, and the hydrogen sulfide in this digestive gas passes through the contact material layer, is absorbed in the circulating water, and is converted into sulfur by the sulfur-oxidizing bacteria grown on the contact material surface. Oxygen is oxidized, and the oxygen required for this oxidation is supplied by the ventilated air and the dissolved oxygen contained in the circulating water.Methane-oxidizing bacteria also grow on the surface of the contact material, and a part of methane in the digested gas is grown by these bacteria. is formed organic substance as an electron donor in the denitrification reaction by reacting with oxygen, denitrifying bacteria utilize the residual organic matter of the organic and hydrogen sulfide and circulation water is by reducing nitrate to nitrogen gas nitrogen BIOS you divided the This is a reaction tank with a rubber and upper and lower structures open to the atmosphere, filled with a contact material inside, and sprays the effluent from the anaerobic treatment tank from above, and a part of the remaining organic matter in the effluent Is oxidatively decomposed by aerobic microorganisms grown on the contact material, ammonia is oxidized to nitric acid or nitrous acid by nitrifying bacteria, and dissolved hydrogen sulfide or sulfur particles flowing from the bioscrubber are converted to sulfuric acid by sulfur oxidizing bacteria to be treated water. The aerobic filter bed contained and flowing out and the biofilm separated from the contact material between the bioscrubber and the aerobic filter bed are separated by sedimentation and discharged as sludge, and the supernatant water becomes treated water, part of which is recycled. A sedimentation tank that is sprinkled as water with a bioscrubber, and a circulation path in which the circulating water that has passed through the bioscrubber returns to the sedimentation tank after passing through the aerobic filter bed, To have.
【０００８】上記本発明のように、有機物除去、生物学
的硫化水素除去、メタン利用の脱窒をも組み合わせたシ
ステムは、従来存在しない。[0008] As in the present invention, there is no conventional system that combines organic matter removal, biological hydrogen sulfide removal, and denitrification using methane.
【０００９】[0009]
【発明の実施の形態】以下、本発明の実施の形態を、図
面を参照して具体的に説明する。本発明による嫌気性汚
水処理用後処理装置は、主としてバイオスクラバーＡ
と、好気性濾床Ｂと、後沈降槽Ｃの３つの部分により構
成されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. The post-treatment device for anaerobic sewage treatment according to the present invention mainly comprises a bioscrubber A.
And an aerobic filter bed B and a post-settling tank C.
【００１０】１）バイオスクラバ一Ａ 本装置の中心的部分であり、密閉容器１の中に接触材２
が充填され、上部より沈降槽Ｃの上澄水３がポンプＰに
より移動する循環経路４を介して散水されて循環水とな
り、下部より空気６と図示しない嫌気性処理槽から発生
した消化ガス５が通気される。消化ガス５中の硫化水素
は、接触材２層を通過すると共に、循環水中に吸収さ
れ、また接触材２の表面に増殖した硫黄酸化細菌によっ
て硫黄に酸化される。この酸化に必要な酸素は通気され
た空気６と循環水中に含まれる溶存酸素によって供給さ
れる。接触材２表面にはメタン酸化細菌も増殖し、この
菌群により消化ガス５中のメタンの一部は酸素と反応し
て脱窒反応に利用される有機物が形成される。この有機
物と硫化水素及び環境水中の残存有機物を利用して脱窒
細菌が硝酸を窒素ガスにまで還元し窒素を除去する。1) Bioscrubber A A central part of the present apparatus.
The supernatant water 3 of the sedimentation tank C is sprinkled from the upper part through the circulation path 4 moved by the pump P to become circulating water, and the air 6 and the digestion gas 5 generated from the anaerobic treatment tank (not shown) are discharged from the lower part. Ventilated. The hydrogen sulfide in the digestion gas 5 passes through the two layers of the contact material, is absorbed into the circulating water, and is oxidized to sulfur by sulfur-oxidizing bacteria grown on the surface of the contact material 2. The oxygen required for this oxidation is vented
It is supplied by the air 6 and the dissolved oxygen contained in the circulating water. The contact member 2 surface methanotrophic bacteria also grow, organic part utilized in denitrification reaction by reacting with oxygen in the methane in digestion gas 5 by the bacterial group is formed. The denitrifying bacteria reduce nitric acid to nitrogen gas and remove nitrogen using the organic matter, hydrogen sulfide and remaining organic matter in environmental water.
【００１１】２）好気性濾床Ｂ 上下が大気開放の構造を有し、内部に接触材８を充墳し
た反応槽７からなり、上部より図示しない嫌気性処理槽
からの流出水９を散水する。流出水９中の残存有機物の
一部は接触材８上に増殖した好気性微生物により酸化分
解される。また、アンモニアは硝化細菌により硝酸また
は亜硝酸に酸化される。また、スクラバーＡから流入す
る溶存硫化水素または硫黄粒は、硫黄酸化細菌により硫
酸となり処理水中に含有されて流出する。2) Aerobic filter bed B Upper and lower sides have a structure in which the upper and lower sides are open to the atmosphere, and consist of a reaction tank 7 filled with a contact material 8 therein, and spout water 9 from an anaerobic treatment tank (not shown) from above. I do. Part of the residual organic matter in the effluent 9 is oxidatively decomposed by the aerobic microorganisms grown on the contact material 8. Ammonia is oxidized to nitric acid or nitrous acid by nitrifying bacteria. The dissolved hydrogen sulfide or sulfur particles flowing from the scrubber A are converted into sulfuric acid by sulfur-oxidizing bacteria and are contained in the treated water and flow out.
【００１２】３）沈降槽Ｃ スクラバーＡ及び好気性濾床Ｂの接触材２，８から剥離
した生物膜等は、沈降槽Ｃにおいて沈澱分離され、汚泥
１０として下部から排出される。上澄水３の一部は、処
理水として循環経路４を介してスクラバーＡに散水され
循環し、他は処理水１１として排出される。3) Sedimentation tank C The biofilm and the like separated from the contact materials 2 and 8 of the scrubber A and the aerobic filter bed B are settled and separated in the sedimentation tank C and discharged as sludge 10 from the lower part. Part of the supernatant water 3 is sprinkled and circulated to the scrubber A via the circulation path 4 as treated water, and the other is discharged as treated water 11.
【００１３】４）循環経路４ バイオスクラバーＡを通過した循環水は、循環路１２を
介して好気性濾床Ｂに供給され、さらに好気性濾床Ｂを
通過して後沈降槽Ｃに戻る循環経路を形成している。な
お、バイオスクラバーＡにおいて脱硫処理された消化ガ
スは、脱硫後の消化ガス１２として密閉容器１の上部か
ら外部に取出される。4) Circulation route 4 The circulating water that has passed through the bioscrubber A is supplied to the aerobic filter bed B via the circulatory channel 12, and further passes through the aerobic filter bed B and returns to the sedimentation tank C. Forming a path. Note that the digested gas desulfurized in the bioscrubber A is taken out from the upper portion of the closed vessel 1 as the digested gas 12 after desulfurization.
【００１４】[0014]
【発明の効果】以上説明したように、本発明の嫌気性汚
水処理用後処理装置によれば、上記の構成・手段によっ
て以下の効果を奏することができる。As described above, according to the post-treatment device for anaerobic sewage treatment of the present invention, the following effects can be obtained by the above-described configuration and means.
【００１５】まず、バイオスクラバーにおいては、嫌気
性処理槽から発生した消化ガスを接触材層を通過させ、
ガス中の硫化水素を循環水に吸収させると共に、その一
部は接触材表面に増殖している硫黄酸化細菌によって硫
黄または硫酸に酸化して除去することができる（表１参
照）。また、接触材表面にはメタン酸化細菌も増殖して
おり、この菌群により消化ガス中のメタンの一部は、循
環水に含有される酸素及び通気された空気に含有される
酸素と反応して脱窒反応に利用される有機物を形成し、
この有機物と硫化水素及び循環水中の残存有機物を利用
して脱窒細菌が硝酸及び亜硝酸を窒素ガスにまで還元し
て窒素を除去することができる（図１参照）。First, in the bio scrubber, digestive gas generated from the anaerobic treatment tank is passed through the contact material layer,
The hydrogen sulfide in the gas is absorbed by the circulating water, and a part of the hydrogen sulfide can be removed by oxidizing to sulfur or sulfuric acid by sulfur oxidizing bacteria growing on the surface of the contact material (see Table 1). In addition, methane-oxidizing bacteria also grow on the surface of the contact material, and some of the methane in the digested gas reacts with the oxygen contained in the circulating water and the oxygen contained in the aerated air. To form organic matter that is used in the denitrification reaction,
Using this organic matter, hydrogen sulfide and residual organic matter in the circulating water, denitrifying bacteria can reduce nitric acid and nitrous acid to nitrogen gas to remove nitrogen (see FIG. 1).
【表１】 [Table 1]
【表２】 [Table 2]
【００１６】次に、好気性濾床においては、反応槽内
で、嫌気性処理槽からの流出水及びバイオスクラバーか
らの循環水が接触材を通過する間に、流出水中の残存有
機物の一部は接触材上に増殖した好気性微生物により酸
化分解することができる（図２参照）。また、流出水中
のアンモニアは、接触材に増殖している硝化細菌により
硝酸または亜硝酸に酸化することができる（図３参
照）。さらに、スクラバーから流入する溶存硫化水素ま
たは硫黄粒は、硫黄酸化細菌により硫酸となり処理水中
に含有されて流出することができる（表２参照）。Next, in the aerobic filter bed, while the effluent from the anaerobic treatment tank and the circulating water from the bioscrubber pass through the contact material in the reaction tank, a part of the organic matter remaining in the effluent is removed. Can be oxidatively decomposed by aerobic microorganisms grown on the contact material (see FIG. 2). Ammonia in the effluent can be oxidized to nitric acid or nitrous acid by nitrifying bacteria growing on the contact material (see FIG. 3). Further, the dissolved hydrogen sulfide or sulfur particles flowing from the scrubber can be converted into sulfuric acid by sulfur-oxidizing bacteria, contained in the treated water, and flow out (see Table 2).
【００１７】さらに、沈降槽においては、スクラバー及
び好気性濾床の接触材から剥離した生物膜等が沈澱分離
され、汚泥として下部から排出することができる。上澄
水の一部は、処理水として循環経路を介してスクラバー
に散水され循環させ、他は処理水として排出することが
できる。Further, in the sedimentation tank, a biofilm or the like separated from the contact material of the scrubber and the aerobic filter bed is precipitated and separated, and can be discharged from the lower part as sludge. Part of the supernatant water can be sprinkled and circulated to the scrubber via a circulation path as treated water, and the other can be discharged as treated water.
【図１】スクラバー接触材上に増殖した微生物によるメ
タン利用脱窒能の確認結果を示すグラフである。FIG. 1 is a graph showing the results of confirming the ability of microorganisms grown on a scrubber contact material to utilize methane for denitrification.
【図２】各水温におけるＢＯＤ除去率を示すグラフであ
る。FIG. 2 is a graph showing a BOD removal rate at each water temperature.
【図３】好気性濾床における濾材表面積当りのアンモニ
ア除去速度を示すグラフである。FIG. 3 is a graph showing the ammonia removal rate per filter medium surface area in an aerobic filter bed.
【図４】本発明による嫌気性汚水処理用後処理装置のシ
ステム説明図である。FIG. 4 is a system explanatory diagram of the post-treatment device for anaerobic sewage treatment according to the present invention.
【符号の説明】 Ａ バイオスクラバー Ｂ 好気性濾床 Ｃ 沈降槽 １ 密閉容器 ２，８ 接触材 ３ 上澄水 ４ 循環経路 ５ 消化ガス ６ 空気 ７ 反応槽 ９ 流出水 １０ 汚泥 １１ 処理水 １２ 循環路 Ｐ ポンプ[Description of Signs] A Bio Scrubber B Aerobic Filter Bed C Sedimentation Tank 1 Closed Vessel 2,8 Contact Material 3 Supernatant Water 4 Circulation Route 5 Digestion Gas 6 Air 7 Reaction Tank 9 Outflow Water 10 Sludge 11 Treatment Water 12 Circulation Path P pump
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平５−68849（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C02F 3/28 - 3/30 C02F 3/34 C02F 3/04 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-5-68849 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) C02F 3/28-3/30 C02F 3 / 34 C02F 3/04
Claims (1)
れ、上部より沈降槽の上澄水が散水されて循環し、下部
より空気と嫌気性処理槽から発生した消化ガスが通気さ
れ、この消化ガス中の硫化水素が接触材層を通過すると
共に、循環水中に吸収され、また接触材表面に増殖した
硫黄酸化細菌によって硫黄に酸化され、この酸化に必要
な酸素は通気された空気と循環水中に含まれる溶存酸素
によって供給され、接触材表面にはメタン酸化細菌も増
殖し、この菌群により消化ガス中のメタンの一部は酸素
と反応して脱窒反応の電子供与体となる有機物が形成さ
れ、この有機物と硫化水素及び循環水中の残存有機物を
利用して脱窒細菌が硝酸を窒素ガスにまで還元して窒素
を除去するバイオスクラバ一と、 上下が大気開放の構造を有し、内部に接触材を充墳した
反応槽であり、上部より嫌気性処理槽からの流出水を散
水し、この流出水中の残存有機物の一部は接触材上に増
殖した好気性微生物により酸化分解され、アンモニアは
硝化細菌により硝酸または亜硝酸に酸化され、上記バイ
オスクラバ一から流入する溶存硫化水素または硫黄粒は
硫黄酸化細菌により硫酸となり処理水中に含有され流出
する好気性濾床と、 上記バイオスクラバ一及び好気性濾床の接触材から剥離
した生物膜が沈澱分離されて汚泥として排出され、上澄
水は処理水となり、その一部は循環水としてバイオスク
ラバ一に散水される沈降槽と、 上記バイオスクラバーを通過した循環水は好気性濾床を
通過した後沈降槽に戻る循環経路と、からなることを特
徴とする嫌気性汚水処理用後処理装置。1. A closed container is filled with a contact material in a layered manner, supernatant water of a sedimentation tank is sprinkled and circulated from an upper part, and air and digestive gas generated from an anaerobic treatment tank are ventilated from a lower part. The hydrogen sulfide in the digested gas passes through the contact material layer and is absorbed into the circulating water, and is oxidized to sulfur by sulfur oxidizing bacteria that grow on the surface of the contact material, and the oxygen required for this oxidation is circulated with the ventilated air. supplied by dissolved oxygen contained in the water, the contact material surface also grown methane oxidizing bacteria, some of the methane in the digestion gas by this bacterial group becomes electron donors denitrification reacts with oxygen the organics are formed, the denitrifying bacteria using the residual organic matter of the organic and hydrogen sulfide and circulating water nitrate bio scrubber one you removed by dividing the nitrogen is reduced to nitrogen gas, vertically atmosphere open structure With contact inside This is a reaction tank filled with water, and the effluent from the anaerobic treatment tank is sprinkled from the top, and some of the remaining organic matter in this effluent is oxidatively decomposed by aerobic microorganisms grown on the contact material, and ammonia is nitrified. Dissolved hydrogen sulfide or sulfur particles that are oxidized to nitric acid or nitrous acid by bacteria and flow from the bioscrubber are converted into sulfuric acid by sulfur-oxidizing bacteria and are contained in the treated water and flow out, and the bioscrubber and the aerobic The biofilm separated from the contact material of the filter bed is settled and separated and discharged as sludge, and the supernatant water becomes treated water. A circulating route for returning the circulated water to the sedimentation tank after passing through the aerobic filter bed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6894498A JP3089297B2 (en) | 1998-03-18 | 1998-03-18 | Post-treatment equipment for anaerobic sewage treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6894498A JP3089297B2 (en) | 1998-03-18 | 1998-03-18 | Post-treatment equipment for anaerobic sewage treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11262793A JPH11262793A (en) | 1999-09-28 |
| JP3089297B2 true JP3089297B2 (en) | 2000-09-18 |
Family
ID=13388296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6894498A Expired - Lifetime JP3089297B2 (en) | 1998-03-18 | 1998-03-18 | Post-treatment equipment for anaerobic sewage treatment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3089297B2 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005058841A (en) * | 2003-08-20 | 2005-03-10 | Mitsui Eng & Shipbuild Co Ltd | Desulfurization apparatus and desulfurization method |
| JP4734182B2 (en) * | 2005-06-15 | 2011-07-27 | 財団法人電力中央研究所 | Bioreactor and method for decomposing and removing ammonia gas using the bioreactor |
| KR100804624B1 (en) | 2006-06-08 | 2008-02-20 | 한국건설기술연구원 | Biological phosphorus and nitrogen removal methods using the granulated methan-oxidizing bacteria and apparatus therefor |
| JP2010029746A (en) * | 2008-07-25 | 2010-02-12 | Ihi Corp | Biological desulfurization method and apparatus |
| JP5197223B2 (en) * | 2008-08-08 | 2013-05-15 | 株式会社東芝 | Water treatment system |
| JP2010116516A (en) * | 2008-11-14 | 2010-05-27 | Ihi Corp | Method and apparatus for purifying energy gas |
| JP2011092862A (en) * | 2009-10-30 | 2011-05-12 | N Ii T Kk | Apparatus for treating waste water with trickling filter |
| JP5873744B2 (en) * | 2012-03-15 | 2016-03-01 | 水ｉｎｇ株式会社 | Organic wastewater and organic waste treatment method and treatment equipment |
| CN103537188B (en) * | 2012-07-10 | 2015-05-27 | 中国科学院生态环境研究中心 | Integrated equipment and method for coprocessing methane and malodorous substances |
| CN103979732B (en) * | 2014-05-09 | 2015-10-07 | 中国科学院生态环境研究中心 | The film biological treating equipment of methane and sulfur-bearing nitrogenous effluent associated treatment and method thereof |
| JP6979023B2 (en) | 2016-09-26 | 2021-12-08 | 住友精化株式会社 | Hydrogen or helium purification method, and hydrogen or helium purification equipment |
| CN110589976A (en) * | 2019-09-09 | 2019-12-20 | 同济大学 | Ecological and biological integrated sewage treatment device and application thereof |
| WO2021117981A1 (en) * | 2019-12-13 | 2021-06-17 | 한국건설기술연구원 | Method of removing high concentration of ammonia from reject water in sewage treatment process by using methane- and methanol-dependent symbiotic bacteria and biogas |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS565596B2 (en) * | 1973-12-14 | 1981-02-05 | ||
| JPH0226615A (en) * | 1988-07-12 | 1990-01-29 | Fuso Yunitetsuku Kk | Desulfurization apparatus for digester gas |
| JP3235131B2 (en) * | 1991-09-18 | 2001-12-04 | 栗田工業株式会社 | Digestion gas desulfurization method and apparatus |
-
1998
- 1998-03-18 JP JP6894498A patent/JP3089297B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11262793A (en) | 1999-09-28 |
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