JPH0232959B2 - - Google Patents
Info
- Publication number
- JPH0232959B2 JPH0232959B2 JP56138632A JP13863281A JPH0232959B2 JP H0232959 B2 JPH0232959 B2 JP H0232959B2 JP 56138632 A JP56138632 A JP 56138632A JP 13863281 A JP13863281 A JP 13863281A JP H0232959 B2 JPH0232959 B2 JP H0232959B2
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- sewage
- treated water
- tank
- soil
- 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
Links
- 239000010802 sludge Substances 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000010865 sewage Substances 0.000 claims description 11
- 239000002689 soil Substances 0.000 claims description 10
- 241000894006 Bacteria Species 0.000 claims description 8
- 238000005192 partition Methods 0.000 claims description 7
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 claims description 4
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 claims description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 2
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 2
- 238000000638 solvent extraction Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 10
- 239000002351 wastewater Substances 0.000 description 4
- 244000005700 microbiome Species 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 238000009395 breeding Methods 0.000 description 2
- 230000001488 breeding effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001546 nitrifying effect Effects 0.000 description 1
- 150000002897 organic nitrogen compounds Chemical class 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Landscapes
- Treatment Of Biological Wastes In General (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Description
【発明の詳細な説明】
本発明は、汚水中の亜硝酸態窒素と硝酸態窒素
を脱窒菌によつて還元して窒素ガスに転化する汚
水処理装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sewage treatment device that reduces nitrite nitrogen and nitrate nitrogen in sewage using denitrifying bacteria and converts it into nitrogen gas.
亜硝酸態窒素と硝酸態窒素を含む２次処理水を
流量調整槽に返送して該槽内の有機汚泥と混合す
ることにより、該汚泥内の脱窒菌の作用で脱窒す
る方法が知られている。この方法の場合、２次処
理水を有機汚泥と混合させるために、撹拌装置が
必要で、流量調整槽の維持管理が面倒であるとい
う欠点がある。 A known method is to return secondary treated water containing nitrite nitrogen and nitrate nitrogen to a flow rate adjustment tank and mix it with organic sludge in the tank, thereby denitrifying the water through the action of denitrifying bacteria in the sludge. ing. In the case of this method, a stirring device is required to mix the secondary treated water with the organic sludge, and the maintenance of the flow rate regulating tank is troublesome.
本発明の目的は、脱窒能力が大きく、撹拌装置
を必要としない汚水処理装置を提供することであ
る。 An object of the present invention is to provide a wastewater treatment device that has a large denitrification capacity and does not require a stirring device.
この目的は、汚水流入管と処理水流出管を備え
た、上方が開放している槽本体を、土壌によつて
被覆し、汚泥流入管に接続しているほぼ垂直なマ
ンホールを、槽本体の底の沈澱汚泥内に達するよ
うに配置し、槽本体を区画する仕切り壁を槽本体
内に配置したことにより、達成される。 The purpose is to cover the tank body, which is open at the top and has a sewage inflow pipe and a treated water outflow pipe, with soil, and to insert a nearly vertical manhole connected to the sludge inflow pipe into the tank body. This is achieved by arranging a partition wall inside the tank body to partition the tank body so as to reach into the settled sludge at the bottom.
以下、図を参照して本発明の実施例を詳しく説
明する。図には、土壌１で被覆されたいわゆる土
壌式の腐敗槽が示されている。２は上方が開放し
た槽本体であり、仕切り壁３によつて第１処理室
４と第２処理室５に分割されている。この仕切り
壁３の上端は、第１処理室４の汚水がこれを越え
て第２処理室５へ溢流できるような高さになつて
いる。第１処理室４と第２処理室５には、沈澱汚
泥S1，S2の引き抜き孔を兼ねる各々１つのマンホ
ール６，７が設けられ、このマンホールに流入管
８と流出管９が開口している。前記マンホール
６，７の下端は沈澱汚泥S1，S2の中に達してい
る。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The figure shows a so-called soil septic tank covered with soil 1. Reference numeral 2 denotes a tank main body which is open at the top, and is divided by a partition wall 3 into a first processing chamber 4 and a second processing chamber 5. The upper end of this partition wall 3 is at a height such that the wastewater in the first processing chamber 4 can overflow into the second processing chamber 5 over this. The first treatment chamber 4 and the second treatment chamber 5 are provided with manholes 6 and 7, respectively, which also serve as holes for drawing out the settled sludge S 1 and S 2 , and an inflow pipe 8 and an outflow pipe 9 are opened in these manholes. ing. The lower ends of the manholes 6 and 7 reach into the settled sludge S 1 and S 2 .
１０と１１は槽本体２内の適宜高さ位置に設け
たロストル（穴あき板）で、この上に礫、合成樹
脂成形材、竹材等の微生物を付着培養し得る材
１２，１３が充填されている。この材１２，１
３の上には、土壌１の落下を防止しかつ水、空
気、土壌動物、微生物を通過させる網１４が設け
られ、更にこの網の上に土壌１が覆設されてい
る。 Reference numerals 10 and 11 are rostles (perforated plates) provided at appropriate heights within the tank body 2, and materials 12 and 13 on which microorganisms can be attached and cultured, such as gravel, synthetic resin molded material, and bamboo, are filled. ing. This material 12,1
A net 14 is provided on top of the net 3 to prevent the soil 1 from falling and to allow water, air, soil animals, and microorganisms to pass through, and the soil 1 is further placed on top of this net.
次に、上記の構造の土壌式腐敗槽における汚水
の脱窒について説明する。例えば接触曝気槽のよ
うな他の処理槽において、汚水中の窒素有機化合
物をアンモニア態窒素（NH4 +）に分解し、これ
を更に硝化菌によつて亜硝酸態窒素（NO2 -）と
硝酸態窒素（NO3 -）まで酸化する。このNO2 -
とNO3 -を含む汚水（２次処理水）を前記の流入
管８からマンホール６を経て第１処理室４に供給
する。該第１処理室４の底には沈澱汚泥S1が沈澱
しており、これを栄養源とする脱窒菌が繁殖して
いる。この沈澱汚泥S1中に２次処理水を通過させ
ると、脱窒菌により汚水中のNO3 -とNO2 -がN2
に還元処理され無害のN2ガスとなる。２次処理
水は更にロストル１０を通過して材１２に達
し、ここで過作用及び脱窒菌等の嫌気性微生物
の処理を受ける。 Next, denitrification of wastewater in the soil type septic tank having the above structure will be explained. In other treatment tanks, such as contact aeration tanks, organic nitrogen compounds in wastewater are decomposed into ammonia nitrogen (NH 4 + ), which is further converted to nitrite nitrogen (NO 2 - ) by nitrifying bacteria. Oxidizes to nitrate nitrogen (NO 3 - ). This NO 2-
and NO 3 - (secondary treated water) is supplied from the inflow pipe 8 to the first treatment chamber 4 via the manhole 6. Precipitated sludge S1 is precipitated at the bottom of the first treatment chamber 4, and denitrifying bacteria using this as a nutrient source are breeding. When the secondary treated water is passed through this settled sludge S1 , NO 3 - and NO 2 - in the wastewater are converted to N 2 by denitrifying bacteria.
It is reduced to harmless N2 gas. The secondary treated water further passes through the rostre 10 and reaches the material 12, where it is subjected to overaction and treatment with anaerobic microorganisms such as denitrifying bacteria.
材１２の上部には汚水より比重の軽い浮遊汚
泥S3が発達している。材１２上には土壌１が被
覆してあるので、材１２の上部は常時高湿度に
保たれている。従つて、浮遊汚泥S3は乾燥してス
カム化することは絶対になく、処理水が通過でき
るようになつている。この浮遊汚泥S3中にもこれ
を栄養源として脱窒菌が繁殖しているので、通過
中の２次処理水は浮遊汚泥S3中でも脱窒作用を受
けることになる。 Floating sludge S3 , which has a lower specific gravity than sewage, is developed in the upper part of material 12. Since the material 12 is covered with soil 1, the upper part of the material 12 is always kept at high humidity. Therefore, the suspended sludge S 3 never dries and turns into scum, allowing the treated water to pass through. Since denitrifying bacteria are breeding in this suspended sludge S3 using this as a nutrient source, the secondary treated water passing through the suspended sludge S3 is also subjected to denitrifying action.
材１２上部の浮遊汚泥S3を通過した２次処理
水は仕切り壁３の上端を越えて第２処理室内へ流
入し、第１の処理室４の場合とは逆に、浮遊汚泥
S4、材１３、沈澱汚泥S2の順序で流過して脱窒
作用を受け、そして流出管９から排出される。 The secondary treated water that has passed through the suspended sludge S3 at the top of the material 12 flows into the second treatment chamber over the upper end of the partition wall 3, and, contrary to the case of the first treatment chamber 4, the suspended sludge
S 4 , material 13 and precipitated sludge S 2 are passed through in this order, subjected to denitrification, and then discharged from the outflow pipe 9.
上述のように本発明においては、２次処理水が
沈澱汚泥だけでなく浮遊汚泥の中をも流過するよ
うにしたので、脱窒能力が大である。また、２次
処理水を汚泥と接触させるために撹拌装置を必要
としないので、汚水処理装置が安価で、維持管理
が容易である。 As described above, in the present invention, since the secondary treated water flows not only through the settled sludge but also through the suspended sludge, the denitrification ability is large. Further, since no stirring device is required to bring the secondary treated water into contact with the sludge, the sewage treatment device is inexpensive and easy to maintain.
なお、本発明は腐敗槽だけでなく流量調整槽、
沈澱槽等の汚水処理装置にも適用できる。 Note that the present invention is applicable not only to septic tanks, but also to flow rate adjustment tanks,
It can also be applied to sewage treatment equipment such as settling tanks.
図は本発明の実施例の縦断面図である。
図中符号、１…土壌、２…槽本体、３…仕切り
壁、４…第１処理室、５…第２処理室、６，７…
マンホール、８…流入管、９…流出管、１０，１
１…ロストル、１２，１３…材、１４…網、
S1，S2…沈澱汚泥、S3，S4…浮遊汚泥。
The figure is a longitudinal sectional view of an embodiment of the invention. Symbols in the figure: 1... Soil, 2... Tank body, 3... Partition wall, 4... First treatment chamber, 5... Second treatment chamber, 6, 7...
Manhole, 8...Inflow pipe, 9...Outflow pipe, 10,1
1...Rostle, 12, 13...Material, 14...Net,
S 1 , S 2 ... settled sludge, S 3 , S 4 ... suspended sludge.
Claims (1)
によつて還元して窒素ガスに転化する汚水処理装
置において、 汚水流入管８と処理水流出管９を備えた、上方
が開放している槽本体２を、土壌１によつて被覆
し、 汚水流入管８に接続しているほぼ垂直なマンホ
ール６を、槽本体２の底の沈澱汚泥S1内に達する
ように配置し、 槽本体２を区画する仕切り壁３を槽本体２内に
配置したことを特徴とする汚水処理装置。[Scope of Claims] 1. A sewage treatment device that reduces nitrite nitrogen and nitrate nitrogen in sewage by denitrifying bacteria and converts it into nitrogen gas, comprising a sewage inflow pipe 8 and a treated water outflow pipe 9. The tank main body 2, which is open at the top, is covered with soil 1, and the almost vertical manhole 6 connected to the sewage inflow pipe 8 is installed so as to reach into the settled sludge S1 at the bottom of the tank main body 2. A sewage treatment device characterized in that a partition wall 3 for partitioning a tank body 2 is arranged inside the tank body 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13863281A JPS5840197A (en) | 1981-09-04 | 1981-09-04 | Denitrification of filthy water and apparatus therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13863281A JPS5840197A (en) | 1981-09-04 | 1981-09-04 | Denitrification of filthy water and apparatus therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5840197A JPS5840197A (en) | 1983-03-09 |
| JPH0232959B2 true JPH0232959B2 (en) | 1990-07-24 |
Family
ID=15226583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13863281A Granted JPS5840197A (en) | 1981-09-04 | 1981-09-04 | Denitrification of filthy water and apparatus therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5840197A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS555733A (en) * | 1978-06-30 | 1980-01-16 | Chiyoda Chem Eng & Constr Co Ltd | Method and apparatus for denitrification treatment of waste water |
-
1981
- 1981-09-04 JP JP13863281A patent/JPS5840197A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS555733A (en) * | 1978-06-30 | 1980-01-16 | Chiyoda Chem Eng & Constr Co Ltd | Method and apparatus for denitrification treatment of waste water |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5840197A (en) | 1983-03-09 |
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