JPH0353760Y2 - - Google Patents
Info
- Publication number
- JPH0353760Y2 JPH0353760Y2 JP9932888U JP9932888U JPH0353760Y2 JP H0353760 Y2 JPH0353760 Y2 JP H0353760Y2 JP 9932888 U JP9932888 U JP 9932888U JP 9932888 U JP9932888 U JP 9932888U JP H0353760 Y2 JPH0353760 Y2 JP H0353760Y2
- Authority
- JP
- Japan
- Prior art keywords
- water
- tank
- treated
- contact
- contact chamber
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 58
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 24
- 239000011148 porous material Substances 0.000 claims description 17
- 239000011257 shell material Substances 0.000 claims description 17
- 244000005700 microbiome Species 0.000 claims description 15
- 239000002351 wastewater Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 26
- 238000005273 aeration Methods 0.000 description 14
- 229910052757 nitrogen Inorganic materials 0.000 description 13
- 238000004065 wastewater treatment Methods 0.000 description 9
- 238000001914 filtration Methods 0.000 description 7
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 238000001556 precipitation Methods 0.000 description 5
- 241001465754 Metazoa Species 0.000 description 4
- 239000013049 sediment Substances 0.000 description 4
- 239000010800 human waste Substances 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000010840 domestic wastewater Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003657 drainage water Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
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
- Physical Or Chemical Processes And Apparatus (AREA)
- Biological Treatment Of Waste Water (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Description
（産業上の利用分野）
この考案は廃水処理用の脱窒槽に関し、詳しく
は廃水中のBODを除去する廃水処理工程に配置
しＴ−Ｎ（総窒素）を除去する脱窒槽に係わるも
のである。
（従来の技術）
一般に、動物のし尿が混入する廃水（いわゆる
下水）は通常の生活廃水と同様にBOD（生物科学
的酸素要求量）除去を主体とした浄化処理がさ
れ、BOD処理工程の脱窒槽において含有窒素成
分が除去処理されている。
（考案が解決しようとする課題）
しかしながら、動物し尿の混入した廃水は通常
の生活廃水に較べ、トータル窒素（総窒素、以下
Ｔ−Ｎとも記載する）量が多いので、浄化処理し
難く、脱窒槽の処理効果が悪い問題があつた。
そこで、本考案の目的は動物し尿の混入した廃
水など、トータル窒素量の多い廃水処理用の脱窒
槽を提供することにある。
（課題を解決するための手段）
上記目的を達成するためにこの考案の手段は、
流入口より槽内に提供された廃水に基づく被処理
水が空気接触を可及的に断ちかつメタノールの存
在する状態において槽内の接触室を通過した後
に、汲上げ手段を介して前記接触室上に戻され、
嫌気性微生物の繰返しの処理を受け、しかる後に
流出口より脱窒処理水として次工程に排出される
構造の脱窒槽であつて、前記接触室は嫌気性微生
物の付着した多孔質材の層部と貝殻質材の層部と
より形成されてなる廃水処理用の脱窒槽とされ
る。
前記脱窒槽は密閉状に形成され、例えば水面に
フロート板などが配置されて空気との接触を可及
的に断つように形成される。脱窒槽内の被処理水
には適宜手段によりメタノールが提供され嫌気的
状態にされる。前記接触室は脱窒槽内を区切つて
形成されるが、脱窒槽内全体を接触室としても良
い。前記汲上げ手段は適宜な水送り手段が採用さ
れる。
（作用）
脱窒槽において被処理水は嫌気的状態に保持さ
れる。メタノールは被処理水の嫌気的状態保持に
役立つ。嫌気性微生物は多孔質材に付着してい
る。被処理水中のトータル窒素は嫌気微生物によ
り消費され浮遊物（あるいは汚泥）を生ずる。被
処理水は接触室の多孔質材において主に嫌気性微
生物処理される。貝殻質材の層部は被処理水にカ
ルシウムイオンを提供し、被処理水PHの低下
（酸性化）を防ぎ、嫌気性微生物の増殖を助ける。
多孔質材の層部は被処理水と嫌気性微生物の接触
を良化する。接触室を通過した被処理水は汲上げ
手段にて接触室上に戻され繰返し脱窒処理が続け
られる。
（実施例）
次に、本考案の実施例を図面に基づいて説明す
る。
第１図は廃水を脱窒処理する脱窒槽１の断面構
造を主体とし、前工程の第２沈澱槽２０及び後工
程の曝気槽２１を併せて示してある。
前記脱窒槽１内は縦向きの筒体２により中央部
と外周部とに区切られ、外周部は接触室３とさ
れ、かつ筒体２内は微生物処理及び汲上げ手段の
配管部位とされている。なお、脱窒槽１内の底部
１Ａ付近は筒体２の配置されない部分とされてい
て、接触室３の下方部と筒体２下方部は水の流通
可能に接続されている。接触室３の下端は網体な
どの透水板４により水平状に被われ、下層には多
孔質材５が配置され、上層には貝殻質材６が配置
されている。前記多孔質材５は、水の流通する多
孔質構造のものであり、例えば第５図に示すよう
に合成樹脂の繊維質よりなる筒体５Ａが用いら
れ、本例では９本の筒体５Ａが接続された状態の
ものとされ、これが接触室内の所定部位を埋める
ように所定数縦横に配置されている。筒体５Ａは
繊維室であるので、排水は縦横に通過自在であ
る。また筒体５Ａには予め嫌気性微生物が付着さ
せてあり、被処理水との接触効率良好である。
前記貝殻質材６は、例えばかき殻などの貝殻６
Ａが所定位置まで配置される。本例の貝殻質材６
は貝殻６Ａの所定量を網袋６Ｂに詰めたものを複
数個配列して接触層とされている。
一方、筒体２下方の層内底部１Ａには該底部１
Ａに吸水口７Ａを有する水中ポンプ７が固定され
ている。水中ポンプ７の導水管８は筒体２内を上
方に導かれ、筒体２上方において水平状の分岐管
９に接続され、接触質３上に導かれ、排水口９Ａ
を接触室３に向けた状態に形成され、適宜手段に
より支持されている。前記水中ポンプ７を駆動し
た際は槽内底部１Ａの水が給水口７Ａより水中ポ
ンプ７内に導入され、導水管８を介して分岐管９
に至り、各排水口９Ａより接触室３上に排出され
る。
前記脱窒槽１の一側部には第２沈澱層２０の水
を構内に導入する導入管１０が設けられ、導入管
１０にはメタノール供給管１１が接続されてい
て、脱窒槽１にメタノールが供給されるようにな
つている。脱窒槽１の他側部には脱窒槽１内の処
理水を曝気槽２に排出する排出管１２が設けられ
ている。そして、第２沈澱槽２０の〓水は脱窒槽
１に入り脱窒槽１の〓水分が曝気槽２１に流出す
るようにされている。脱窒槽１は予め所定の水位
にされていて、水面には該水面全体を密閉状に被
うフロート板１３が浮かせてある。また、脱窒槽
１上端の開口部１Ｂには開閉可能に蓋板１４が被
着されている。
しかして、本例の脱窒槽１は第７図に示すよう
に廃水処理工程の第２沈澱槽２０と曝気槽２１間
に配設され、廃水の流入、排出可能に接続され
る。第７図の廃水処理工程は、回転羽根式の曝気
槽１６、計量槽１７、第１沈澱槽１８、酸化槽１
９、第２沈澱槽２０、脱窒槽１、曝気槽２１、第
３沈澱槽２２、接触濾過槽２３及び放流槽２４と
よりなる。そして、第１沈澱槽１８、酸化槽１
９、曝気槽２１及び接触濾過槽２３にはブロアに
より空気が提供される。
しかして、動物し尿の混入した総窒素量の多い
廃水を曝気槽１６を導入し、回転羽根の１６Ａに
より空気接触させ酸化処理する。次いで酸化処理
した廃水を送水ポンプ２５により計量槽１７に送
り、所定流量で第１沈澱槽１８に送る。第１沈澱
槽１８においてBOD，CODの一部が汚泥沈澱と
して除去される。沈澱の除去された第１沈澱槽１
８の被処理水は酸化槽１９に導入される。酸化槽
１９において被処理水は曝気管２６により曝気さ
れ、かつ貝殻槽２７を経て循環され、好気性微生
物処理される。次いで、酸化槽１９の被処理水は
第２沈澱層２０に送られ沈澱が除去されBOD，
CODの低下した被処理水となる。
次いで、この被処理水は導入管１０を介して脱
窒槽１に導入される。なお、導入途中においてメ
タノールが添加される。脱窒槽１において、被処
理水は水中ポンプ７の吸水口７Ａより導入され、
導入管８及び分岐管９を介して排水口より接触室
３上に排出される。接触室３上の処理水は貝殻質
材６及び多孔質材５を経て接触室３の下部に至
り、再び吸水口７Ａに導入され、接触室３におけ
る接触処理が繰返される。被処理水は貝殻質材６
を通過する際にカルシウムイオンにより中和され
PHが中性化される。多孔質材５において被処理
水と嫌気性微生物との接触がされる。脱窒槽１内
は嫌気的条件にされていることにより被処理水は
嫌気性微生物の処理を受け総窒素が消化される。
総窒素の消化された被処理水は排出管１２より曝
気槽２１に導入される。総窒素量の低下した被処
理水は曝気槽２１において曝気管２８により曝気
され、かつ貝殻層２９を経て循環され好気性微生
物処理されBOD，CODが低下される。
次いでBOD，CODの低下した被処理水は第３
沈澱槽２２に導入され、沈澱が除去された後に接
触濾過槽２３に導入される。接触濾過槽２３は曝
気管３０により曝気され、被処理水が空気と長く
接触するように形成され、空気接触した被処理水
は大粒及び細粒の貝殻層３１を経てカルシウムイ
オンによる中和及び濾過処理された後に再び曝気
槽３０に至り、曝気と濾過を繰返される。接触濾
過槽２３において浮遊物、沈澱が除去され透明な
処理水とされる。接触濾過槽２３の透明な処理水
は放流槽２４に貯留され適宜に放流される。
本例の廃水処理工程における廃水処理の結果
は、例えば次表に示す通りであつた。
(Industrial Application Field) This invention relates to a denitrification tank for wastewater treatment, and more specifically to a denitrification tank that is placed in a wastewater treatment process to remove BOD from wastewater and removes T-N (total nitrogen). . (Prior art) In general, wastewater contaminated with animal excrement (so-called sewage) is purified by mainly removing BOD (biological oxygen demand) in the same way as normal domestic wastewater, and the BOD treatment process is eliminated. Nitrogen components are removed in the nitrogen tank. (Problem to be solved by the invention) However, compared to normal domestic wastewater, wastewater contaminated with animal human waste has a higher amount of total nitrogen (total nitrogen, hereinafter also referred to as T-N), so it is difficult to purify and remove. There was a problem that the treatment effect of the nitrogen tank was poor. Therefore, an object of the present invention is to provide a denitrification tank for treating wastewater containing a large amount of total nitrogen, such as wastewater mixed with animal human waste. (Means for solving the problem) In order to achieve the above purpose, the means of this invention are:
After the water to be treated based on wastewater provided into the tank from the inlet passes through the contact chamber in the tank in a state where air contact is cut off as much as possible and methanol is present, the water is pumped into the contact chamber through a pumping means. returned to the top,
The denitrification tank is structured so that it undergoes repeated treatment with anaerobic microorganisms and is then discharged from an outlet to the next process as denitrified water, and the contact chamber is a layer of porous material on which anaerobic microorganisms are attached. A denitrification tank for wastewater treatment is formed by a layer of shell material and a layer of shell material. The denitrification tank is formed in a sealed manner, for example, a float plate or the like is placed on the water surface to cut off contact with air as much as possible. The water to be treated in the denitrification tank is provided with methanol by appropriate means to be brought into an anaerobic state. The contact chamber is formed by dividing the interior of the denitrification tank, but the entire interior of the denitrification tank may be used as the contact chamber. Appropriate water feeding means is employed as the pumping means. (Function) The water to be treated is maintained in an anaerobic state in the denitrification tank. Methanol helps maintain the anaerobic state of the water being treated. Anaerobic microorganisms are attached to porous materials. The total nitrogen in the water to be treated is consumed by anaerobic microorganisms, producing suspended matter (or sludge). The water to be treated is mainly treated with anaerobic microorganisms in the porous material of the contact chamber. The shell material layer provides calcium ions to the water to be treated, prevents the pH of the water from decreasing (acidification), and supports the growth of anaerobic microorganisms.
The layer of porous material improves contact between the water to be treated and anaerobic microorganisms. The water to be treated that has passed through the contact chamber is returned to the top of the contact chamber by a pumping means, and denitrification treatment is continued repeatedly. (Example) Next, an example of the present invention will be described based on the drawings. FIG. 1 mainly shows the cross-sectional structure of a denitrification tank 1 for denitrifying wastewater, and also shows a second sedimentation tank 20 in the preceding process and an aeration tank 21 in the subsequent process. The inside of the denitrification tank 1 is divided into a central part and an outer peripheral part by a vertical cylinder 2, the outer peripheral part is used as a contact chamber 3, and the inside of the cylinder 2 is used as a piping part for microbial treatment and pumping means. There is. Note that the vicinity of the bottom 1A in the denitrification tank 1 is a part where the cylinder 2 is not placed, and the lower part of the contact chamber 3 and the lower part of the cylinder 2 are connected to allow water to flow therethrough. The lower end of the contact chamber 3 is horizontally covered with a water-permeable plate 4 such as a net, a porous material 5 is arranged in the lower layer, and a shell material 6 is arranged in the upper layer. The porous material 5 has a porous structure through which water flows, and for example, as shown in FIG. 5, cylinders 5A made of synthetic resin fibers are used, and in this example, nine cylinders 5A are used. are connected, and a predetermined number of these are arranged vertically and horizontally so as to fill a predetermined portion within the contact chamber. Since the cylindrical body 5A is a fiber chamber, drainage water can freely pass through it in all directions. Moreover, anaerobic microorganisms are attached to the cylinder 5A in advance, and the contact efficiency with the water to be treated is good. The shell material 6 is, for example, a shell 6 such as an oyster shell.
A is placed at a predetermined position. Shell material 6 of this example
The contact layer is made by arranging a plurality of net bags 6B filled with a predetermined amount of shells 6A. On the other hand, the inner layer bottom 1A below the cylinder 2 has the bottom 1
A submersible pump 7 having a water intake port 7A is fixed at A. The water conduit 8 of the submersible pump 7 is guided upward within the cylinder 2, connected to a horizontal branch pipe 9 above the cylinder 2, led onto the contact material 3, and connected to the drain port 9A.
is formed so as to face the contact chamber 3, and is supported by appropriate means. When the submersible pump 7 is driven, water at the bottom 1A of the tank is introduced into the submersible pump 7 from the water supply port 7A, and is passed through the water conduit 8 to the branch pipe 9.
and is discharged onto the contact chamber 3 from each drain port 9A. An introduction pipe 10 for introducing water from the second precipitation layer 20 into the premises is provided on one side of the denitrification tank 1. A methanol supply pipe 11 is connected to the introduction pipe 10, and methanol is supplied to the denitrification tank 1. supply is becoming available. A discharge pipe 12 for discharging the treated water in the denitrification tank 1 to the aeration tank 2 is provided on the other side of the denitrification tank 1 . The water in the second settling tank 20 enters the denitrification tank 1 and the water in the denitrification tank 1 flows out into the aeration tank 21. The denitrification tank 1 is set to a predetermined water level in advance, and a float plate 13 is floated on the water surface to cover the entire water surface in a sealed manner. Further, a lid plate 14 is attached to the opening 1B at the upper end of the denitrification tank 1 so as to be openable and closable. As shown in FIG. 7, the denitrification tank 1 of this example is disposed between the second settling tank 20 and the aeration tank 21 in the wastewater treatment process, and is connected to allow the inflow and discharge of wastewater. The wastewater treatment process in FIG.
9, a second precipitation tank 20, a denitrification tank 1, an aeration tank 21, a third precipitation tank 22, a contact filtration tank 23, and a discharge tank 24. Then, the first precipitation tank 18, the oxidation tank 1
9. Air is provided to the aeration tank 21 and the contact filtration tank 23 by a blower. Thus, the wastewater containing animal human waste and having a large amount of total nitrogen is introduced into the aeration tank 16, and brought into contact with air by the rotary blade 16A for oxidation treatment. Next, the oxidized wastewater is sent to the metering tank 17 by the water pump 25, and is sent to the first settling tank 18 at a predetermined flow rate. In the first settling tank 18, a portion of BOD and COD is removed as sludge sediment. First sedimentation tank 1 from which sediment was removed
The water to be treated No. 8 is introduced into the oxidation tank 19 . In the oxidation tank 19, the water to be treated is aerated through an aeration pipe 26, circulated through a shell tank 27, and subjected to aerobic microbial treatment. Next, the water to be treated in the oxidation tank 19 is sent to the second sedimentation layer 20, where the sediment is removed and BOD,
This results in treated water with reduced COD. Next, this water to be treated is introduced into the denitrification tank 1 via the introduction pipe 10. Note that methanol is added during the introduction. In the denitrification tank 1, the water to be treated is introduced from the water intake port 7A of the submersible pump 7,
It is discharged onto the contact chamber 3 from the drain port via the introduction pipe 8 and the branch pipe 9. The treated water on the contact chamber 3 passes through the shell material 6 and the porous material 5, reaches the lower part of the contact chamber 3, is introduced into the water intake port 7A again, and the contact treatment in the contact chamber 3 is repeated. The water to be treated is shell material 6
is neutralized by calcium ions as it passes through
PH is neutralized. In the porous material 5, the water to be treated comes into contact with the anaerobic microorganisms. Since the inside of the denitrification tank 1 is kept under anaerobic conditions, the water to be treated is treated by anaerobic microorganisms, and the total nitrogen is digested.
The water to be treated in which the total nitrogen has been digested is introduced into the aeration tank 21 through the discharge pipe 12. The water to be treated with a reduced total nitrogen content is aerated through an aeration pipe 28 in an aeration tank 21, circulated through a shell layer 29, and treated with aerobic microorganisms to reduce BOD and COD. Next, treated water with reduced BOD and COD is the third
The water is introduced into a precipitation tank 22, and after the precipitate is removed, it is introduced into a contact filtration tank 23. The contact filtration tank 23 is aerated by an aeration pipe 30 and is formed so that the water to be treated is in contact with air for a long time. After being treated, it reaches the aeration tank 30 again, where aeration and filtration are repeated. Floating matter and sediment are removed in the contact filtration tank 23, resulting in clear treated water. The transparent treated water in the contact filtration tank 23 is stored in a discharge tank 24 and discharged as appropriate. The results of the wastewater treatment in the wastewater treatment step of this example were as shown in the following table, for example.
【表】
本例の廃水処理においては例えばＴ−N39ppm
の廃水をＴ−N5ppm以下となし得た。
前記した脱窒槽１の接触室３は下層が多孔質材
５よりなり、上層が貝殻質材６よりなる二層構成
となしたが、第８図に示すように脱窒槽１の接触
室３は底部より上方へ多孔質材５、貝殻質材６、
多孔質材６、貝殻質材６と交互に配設された複層
構成とすることができる。
（考案の効果）
しかして、本考案は空気接触を可及的に断ちか
つメタノールの存在する状況の脱窒槽であるの
で、貯留される被処理水は嫌気性微生物により脱
窒処理される。そして、脱窒槽の接触室は多孔質
材の層部と貝殻質材の層部により形成されている
ため、被処理水は多孔質材の層部においてPHの
低下が防止され、かつ多孔質材の層部において浮
遊物等の除去がされる。
また、本考案においては接触室を通過した被処
理水は吸上げ手段を介して接触室上に戻される構
造であるので、繰返しの濾過処理がされ嫌気性微
生物による脱窒処理が良好に行なわれ、総窒素の
除去率を高め得る。[Table] In the wastewater treatment of this example, for example, T-N39ppm
wastewater with T-N of less than 5 ppm. The contact chamber 3 of the denitrification tank 1 described above has a two-layer structure, with the lower layer made of porous material 5 and the upper layer made of shell material 6. As shown in FIG. Porous material 5, shell material 6,
It can have a multilayer structure in which the porous material 6 and the shell material 6 are alternately arranged. (Effects of the invention) Since the present invention is a denitrification tank in which air contact is cut off as much as possible and methanol is present, the stored water to be treated is denitrified by anaerobic microorganisms. Since the contact chamber of the denitrification tank is formed by a layer of porous material and a layer of shell material, the pH of the water to be treated is prevented from decreasing in the layer of porous material, and the porous material Floating objects, etc. are removed from the layer. In addition, in the present invention, the water to be treated that has passed through the contact chamber is returned to the contact chamber through a suction means, so that the water to be treated is repeatedly filtered and denitrification treatment by anaerobic microorganisms is performed effectively. , can increase the total nitrogen removal rate.
図面は本考案の一実施例を示し、第１図は脱窒槽
を主体とした断面図、第２図は脱窒槽の平面図、
第３図は第１図−線における断面図、第４図
は第１図の−線における断面図、第５図は多
孔質材の斜視図、第６図は貝殻質材の斜視図、第
７図は廃水処理工程における使用態様図、第８図
は脱窒槽の別例図である。
１……脱窒槽、３……接触室、５……多孔質
材、６……貝殻質材、７……水中ポンプ、７Ａ…
…吸水口、８……導水管、９……分岐管、９Ａ…
…排水口、１３……フロート板。
The drawings show an embodiment of the present invention, with Fig. 1 being a sectional view mainly showing the denitrification tank, Fig. 2 being a plan view of the denitrification tank,
3 is a sectional view taken along the line - - in FIG. 1, FIG. 4 is a sectional view taken along the - line in FIG. 1, FIG. 5 is a perspective view of the porous material, and FIG. FIG. 7 is a usage diagram in a wastewater treatment process, and FIG. 8 is another example of a denitrification tank. 1... Denitrification tank, 3... Contact chamber, 5... Porous material, 6... Shell material, 7... Submersible pump, 7A...
...Water intake, 8...Water pipe, 9...Branch pipe, 9A...
...Drain port, 13...Float board.
Claims (1)
理水が空気接触を可及的に断ちかつメタノールの
存在する状態において槽内の接触室を通過した後
に、汲上げ手段を介して前記接触室上に戻され、
嫌気性微生物の繰返しの処理を受け、しかる後に
流出口より脱窒処理水として次工程に排出される
構造の脱窒槽であつて、前記接触室は嫌気性微生
物の付着した多孔質材の層部と貝殻質材の層部と
より形成されてなることを特徴とした廃水処理用
の脱窒槽。 After the water to be treated based on wastewater supplied into the tank from the inlet passes through the contact chamber in the tank in a state where air contact is cut off as much as possible and methanol is present, the water is pumped into the contact chamber through a pumping means. returned to the top,
The denitrification tank is structured so that it undergoes repeated treatment with anaerobic microorganisms and is then discharged from an outlet to the next process as denitrified water, and the contact chamber is a layer of porous material on which anaerobic microorganisms are attached. and a layer of shell material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9932888U JPH0353760Y2 (en) | 1988-07-27 | 1988-07-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9932888U JPH0353760Y2 (en) | 1988-07-27 | 1988-07-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0221000U JPH0221000U (en) | 1990-02-13 |
| JPH0353760Y2 true JPH0353760Y2 (en) | 1991-11-25 |
Family
ID=31326383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9932888U Expired JPH0353760Y2 (en) | 1988-07-27 | 1988-07-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0353760Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3335500B2 (en) | 1994-08-03 | 2002-10-15 | シャープ株式会社 | Wastewater treatment device and wastewater treatment method |
| JP4574717B2 (en) * | 2009-03-30 | 2010-11-04 | 雅英 市川 | Apparatus for generating hydrogen gas by reaction of metallic sodium and water and method for producing hydrogen gas |
| JP5602462B2 (en) * | 2010-03-05 | 2014-10-08 | 雅英 市川 | Apparatus for generating hydrogen gas by reaction of metallic sodium and water and method for producing hydrogen gas |
-
1988
- 1988-07-27 JP JP9932888U patent/JPH0353760Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0221000U (en) | 1990-02-13 |
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