JPH0154117B2 - - Google Patents
Info
- Publication number
- JPH0154117B2 JPH0154117B2 JP62273351A JP27335187A JPH0154117B2 JP H0154117 B2 JPH0154117 B2 JP H0154117B2 JP 62273351 A JP62273351 A JP 62273351A JP 27335187 A JP27335187 A JP 27335187A JP H0154117 B2 JPH0154117 B2 JP H0154117B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- tank
- granular
- treated
- water outlet
- 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 75
- 238000000926 separation method Methods 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 24
- 238000005406 washing Methods 0.000 claims description 20
- 238000004140 cleaning Methods 0.000 claims description 14
- 239000008187 granular material Substances 0.000 claims description 14
- 238000004065 wastewater treatment Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 11
- 239000000969 carrier Substances 0.000 claims description 9
- 239000006185 dispersion Substances 0.000 claims description 5
- 239000002351 wastewater Substances 0.000 claims description 4
- 239000011236 particulate material Substances 0.000 claims 1
- 239000010802 sludge Substances 0.000 description 11
- 239000007789 gas Substances 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 230000000630 rising effect Effects 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- 238000007664 blowing Methods 0.000 description 5
- 238000000605 extraction Methods 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 5
- 244000005700 microbiome Species 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 2
- 239000003830 anthracite Substances 0.000 description 2
- 238000011001 backwashing Methods 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 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
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000010797 grey water Substances 0.000 description 1
- 239000010800 human waste Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002062 proliferating effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000010457 zeolite 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
- Biological Treatment Of Waste Water (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、上水・下水・ビル用中水・し尿や各
種産業廃水等を清浄化処理する廃水処理装置に関
するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a wastewater treatment device for purifying tap water, sewage, gray water for buildings, human waste, various industrial wastewaters, and the like.
（従来技術と問題点）
従来、処理槽内に砂・活性炭・アンスラサイト
や合成樹脂材等の粒状担体を充填し、上記担体表
面に生物膜を付着増殖せしめ上水・下水・し尿や
各種産業廃水等の被処理水中のBOD・COD・窒
素分等を生物学的に処理する廃水処理装置は知ら
れている。上記廃水処理装置においては、充填し
た担体を固定して用いる固定床式と、空気・嫌気
性ガス・不活性ガスや被処理水等により流動化さ
せて用いる流動床式がある。固定床式廃水処理装
置では、担体表面での微生物の増殖や被処理原水
中のSS分の捕捉等による目詰りが起るため定期
的な逆洗操作が必要となり、この逆洗操作中は原
水の浄化処理機能が停止するため原水の浄化処理
を連続して行なうとすれば二系統以上の浄化装置
の設置が必要となり設備費が嵩むという問題があ
る。これに対し流動床式では担体に付着する生物
膜等は常時適宜剥離されるため逆洗操作は不要で
ある、処理水質の経時的変化がなく安定してい
る、処理槽単位容積当りのBOD負荷を高くでき
るので装置がコンパクトになる等の利点がある。
しかしながら流動床式の生物処理水中には汚泥の
外に微細SS等も含まれるためその除去には大き
い沈澱槽が必要である等の問題がある。本出願人
は以上の流動床式の問題を解消するため先に特願
昭61−189629号にて流動床式生物処理装置と移動
床式過装置とを組み合せた全く新規な廃水処理
装置を提案した。本装置は粒状担体を上昇する空
気により流動化して流動床を形成し生物処理を行
い次いで被処理水中の汚泥は前記粒状担体を用い
た移動床式の過装置で除去し該過操作により
汚れた前記粒状担体はエヤリフト方式で処理水を
用いて流動床上方に移動するとともに揺動して汚
泥を分離し再生して循環使用するものであつて沈
澱槽が不要であるため装置の設置面積を節減でき
るとともに設備費も少くて済む等多くの利点を有
する廃水処理装置である。(Prior art and problems) Conventionally, a treatment tank is filled with granular carriers such as sand, activated carbon, anthracite, or synthetic resin materials, and biofilms are attached to and proliferate on the surface of the carrier. Wastewater treatment devices that biologically treat BOD, COD, nitrogen, etc. in water to be treated such as wastewater are known. The above-mentioned wastewater treatment apparatuses include a fixed bed type in which the filled carrier is fixed and a fluidized bed type in which the carrier is fluidized by air, anaerobic gas, inert gas, water to be treated, etc. Fixed-bed wastewater treatment equipment requires periodic backwashing because clogging occurs due to the growth of microorganisms on the carrier surface and the capture of SS content in the raw water to be treated. Since the purification function of the raw water stops, if the raw water is to be purified continuously, it will be necessary to install two or more systems of purification equipment, resulting in an increase in equipment costs. On the other hand, in the fluidized bed type, biofilms etc. attached to the carrier are constantly peeled off, so no backwashing operation is necessary.The quality of treated water remains stable with no change over time, and the BOD load per unit volume of the treatment tank is This has the advantage that the device can be made more compact since it can be made higher.
However, fluidized bed biologically treated water contains fine SS and the like in addition to sludge, so there are problems such as the need for a large settling tank to remove it. In order to solve the above-mentioned fluidized bed type problems, the present applicant previously proposed in Japanese Patent Application No. 61-189629 a completely new wastewater treatment device that combines a fluidized bed type biological treatment device and a moving bed type filtration device. did. This device fluidizes the granular carrier with rising air to form a fluidized bed for biological treatment.Then, the sludge in the water to be treated is removed by a moving bed type filtration device using the granular carrier, and the sludge is removed by the over-operation. The granular carrier is moved above the fluidized bed using treated water using an air lift method, and is swung to separate and regenerate sludge for circulation use, and since a sedimentation tank is not required, the installation area of the equipment is reduced. This is a wastewater treatment device that has many advantages, such as low equipment costs and low equipment costs.
しかしながら本廃水処理装置には検討の結果次
のような改良すべき点があることが判つた。すな
わち過床の粒状担体と処理水の流れが下向流で
あるため過後の処理水と粒状担体の分離は多孔
板や金網等を用いている。このため長時間運転後
には粒状担体を保持するために間隙が小さい前記
多孔板や金網が処理水中の汚泥その他の固形物に
より目詰りを生じるおそれがあることである。本
出願人はこの点をさらに改良すべく鋭意検討の結
果本発明を成すに至つたのである。 However, as a result of examination, it was found that this wastewater treatment equipment has the following points that need improvement. That is, since the flow of the granular carriers and the treated water in the overbed is downward, a perforated plate, a wire mesh, etc. are used to separate the treated water and the granular carriers after the filtration. For this reason, after long-term operation, there is a risk that the perforated plates and wire mesh, which have small gaps for holding the granular carriers, may become clogged with sludge and other solids in the treated water. The present applicant has completed the present invention as a result of intensive studies to further improve this point.
（発明の構成）
本発明は上記事情に鑑みてなされたものであ
り、気液向流の流動床式廃水処理装置と水側が上
向流の移動床式過装置とをコンパクトに単一槽
にまとめた構成とし各々の欠点を補い、利点を効
果的に発揮させることのできる装置を提供するも
のであり、その要旨とするところは、生物膜を付
着する粒状担体と廃水を接触させて生物的に浄化
処理する廃水処理装置に於いて、(イ)頂部から被処
理水を下向きに流し下部から気体を吹きこんで粒
状担体の流動床を形成する処理槽と、(ロ)前記処理
槽内部に立設され、上部には処理水出口と下半部
には粒状材が堆積し下向きに移動する過床を
内蔵する内筒と、(ハ)前記内筒の上方に架設され最
上部には洗浄水出口管を有する液位調節器と循環
水出口を具備しその下方には分離部を介在して
材流入口とさらにその下方には洗浄部を介在して
分散板を具備した洗浄分離槽と、(ニ)前記洗浄分離
槽の循環水出口からの循環水を用いて前記処理槽
の底部から粒状材を抜き出し、前記洗浄分離槽
の材流入口迄移送する移送手段とを設けたこと
を特徴とする廃水処理装置である。(Structure of the Invention) The present invention has been made in view of the above circumstances, and it compactly combines a gas-liquid countercurrent fluidized bed wastewater treatment device and a moving bed filtration device with an upward flow on the water side into a single tank. The system provides a device that has a combined configuration that compensates for the shortcomings of each and effectively brings out the advantages of each.The gist of the device is to bring biological membranes into contact with granular carriers and wastewater to generate biological membranes. In a wastewater treatment device that performs purification treatment, (a) a treatment tank in which water to be treated flows downward from the top and gas is blown in from the bottom to form a fluidized bed of granular carriers, and (b) inside the treatment tank. (c) an inner cylinder with a built-in treated water outlet in the upper part and an overbed in which granular material is deposited and moves downward in the lower half; A cleaning separation tank equipped with a liquid level regulator having a water outlet pipe and a circulating water outlet, a material inlet with a separating section interposed below it, and a washing separation tank equipped with a dispersion plate below it with a cleaning section interposed therebetween. (d) a transfer means for extracting granular material from the bottom of the processing tank using circulating water from the circulating water outlet of the washing separation tank and transporting it to the material inlet of the washing separation tank. This is a wastewater treatment equipment.
本装置では生物処理は粒状担体を用いた流動床
であるため接触効率が高いこと、過方式は水側
流れが上向きで粒状材とは向流の移動床である
ため汚泥等の捕捉効率が高いこと、生物処理槽と
過床が一体的に構築されているため設置面積が
大巾に節減できる等大きな特長を有している。 In this device, the biological treatment uses a fluidized bed using granular carriers, so the contact efficiency is high, and the filtration method uses a moving bed in which the flow on the water side is upward and countercurrent to the granular material, so it has a high capture efficiency for sludge, etc. In addition, since the biological treatment tank and the overbed are constructed integrally, it has great features such as the ability to significantly reduce the installation area.
（作用）
処理槽の上部から導入された被処理水は、処理
槽下部にて導入された空気等のガスにより粒状担
体が流動化した流動床部を下向する間に担体表面
に付着増殖した生物膜によつてBOD・CODや窒
素分等が生物学的に処理される。流動床接触処理
部で処理された被処理水は次いで粒状材からな
る過床を上昇する間に前記流動床担体から剥離
した増殖微生物や被処理原水中のSS分等の固形
物が過分離され清澄処理水が得られる。過床
では微生物を捕捉した粒状材は下向移動し処理
槽最底部からエジエクターにより循環水中に抜き
出され、移送管を経由して処理槽上部に架設され
る洗浄分離槽に移送され材は循環水から分離さ
れた後に清澄処理水で洗浄されて、過部に戻さ
れた過用に再使用される。(Function) The water to be treated introduced from the upper part of the treatment tank adheres to the surface of the carrier and grows while moving downward through the fluidized bed section where the granular carrier is fluidized by gas such as air introduced at the lower part of the treatment tank. BOD, COD, nitrogen, etc. are processed biologically by biofilm. The water to be treated in the fluidized bed contact treatment section then ascends through an overbed made of granular material, during which solids such as proliferating microorganisms detached from the fluidized bed carrier and SS content in the raw water to be treated are over-separated. Clear treated water is obtained. In the overbed, the granular material that has captured microorganisms moves downward, is extracted from the bottom of the treatment tank by an ejector into circulating water, and is transferred via a transfer pipe to a washing separation tank installed at the top of the treatment tank, where the material is circulated. After being separated from the water, it is washed with clarified water and returned to the filter section for reuse.
（実施例）
第１図は本発明の一実施例を示した概略縦断面
図である。１は頂部が開放され被処理水の導入口
１５を具備し、底部が逆円錐状で粒状材の抜出
口２を具備した処理槽である。当該槽を嫌気性処
理槽として用いる場合や酸素ガス処理槽として用
いる場合には密閉構造とする必要がある。３は処
理槽１の内部に立設し下端には案内板４を、上部
には処理水出口５を具備した内筒である。処理槽
１及び内筒３の断面形状は円形、方形いずれでも
よい。６は処理槽１の下部に付設される粒状担体
７の流動化用及び生物処理用の空気、酸素ガス、
嫌気性ガス、窒素ガス等気体用の吹込管であり、
多数の穿孔を有するリング状の管が好適である。
粒状担体７としては表面積が大きいこと、流動化
し易く且つ後述の洗浄分離槽９で処理水から分離
し易いことを条件として選定されるが比重：1.05
〜1.3、粒径：0.1〜1.0ミリが適当である、具体的
には合成樹脂、活性炭等から好適なものが選ばれ
る。８は処理槽１の底部近くに設けられる形状が
吹込管６と同じ形状の予備ノズルであり沈降した
粒状担体７の浮上分離用に使用される。９は内筒
３の上部に架設される粒状材用の洗浄分離槽で
あり、その上部には複数の洗浄水出口管１０が付
設している液位調節器１２と循環水用のポンプ１
３に循環水管１４を介して連結している循環水出
口管１１を具備している。１７は処理槽１の最底
部の材抜出口２に直結されるエジエクターであ
りその二次側は移送管１８を介して洗浄分離槽９
の中間部に設けられる材流入口１９に連結して
いる。２０は洗浄分離槽９の直下に離隔して設け
られる陳笠状の粒状材用の分散板である。粒状
材１６としては前記粒状担体７と同じものでも
よいが比重：1.5〜3.0、粒径：0.5〜2.0mmのもの
が望ましく砂、アンスラサイト、活性炭、ゼオラ
イト等から目的に応じて適宜選定される。(Example) FIG. 1 is a schematic vertical sectional view showing an example of the present invention. Reference numeral 1 denotes a treatment tank having an open top and an inlet 15 for water to be treated, and an inverted conical bottom having an outlet 2 for extracting granular material. When using the tank as an anaerobic treatment tank or an oxygen gas treatment tank, it is necessary to have a sealed structure. Reference numeral 3 denotes an inner cylinder which is erected inside the treatment tank 1 and has a guide plate 4 at its lower end and a treated water outlet 5 at its upper end. The cross-sectional shape of the processing tank 1 and the inner cylinder 3 may be either circular or square. 6 is air, oxygen gas for fluidizing the granular carrier 7 attached to the lower part of the treatment tank 1 and for biological treatment;
This is a blowing pipe for gases such as anaerobic gas and nitrogen gas.
A ring-shaped tube with multiple perforations is preferred.
The granular carrier 7 is selected on the condition that it has a large surface area, is easy to fluidize, and is easy to separate from the treated water in the washing separation tank 9 described later, and has a specific gravity of 1.05.
~1.3, particle size: 0.1 to 1.0 mm is appropriate; specifically, a suitable material is selected from synthetic resins, activated carbon, etc. Reference numeral 8 denotes a preliminary nozzle having the same shape as the blowing pipe 6, which is provided near the bottom of the processing tank 1, and is used for flotation and separation of the settled granular carriers 7. Reference numeral 9 denotes a washing separation tank for granular materials installed on the upper part of the inner cylinder 3, and a liquid level regulator 12 with a plurality of washing water outlet pipes 10 attached thereto and a pump 1 for circulating water are installed on the upper part.
3 is provided with a circulating water outlet pipe 11 connected to the circulating water pipe 14 via a circulating water pipe 14. Reference numeral 17 denotes an ejector that is directly connected to the material extraction port 2 at the bottom of the processing tank 1, and its secondary side is connected to the cleaning separation tank 9 via the transfer pipe 18.
It is connected to a material inlet 19 provided in the middle part of the pipe. Reference numeral 20 denotes a dispersion plate for granular material in the shape of a bamboo basket, which is provided directly below the washing separation tank 9 and separated therefrom. The granular material 16 may be the same as the granular carrier 7, but it is preferably one with a specific gravity of 1.5 to 3.0 and a particle size of 0.5 to 2.0 mm, and is appropriately selected from sand, anthracite, activated carbon, zeolite, etc. depending on the purpose. .
以上の構成からなる実施例の廃水処理装置の作
用について説明する。廃水槽１の頂部原水入口１
５から導入された被処理水は、吹込管６から供給
され槽内を上昇する空気等の気体により流動化さ
れている流動床Ａの担体に接触し付着している微
生物により生物処理され浄化される。流動床Ａを
出た被処理水は処理槽１の下部にある案内板４に
よつて半径方向の外側から過床Ｂの下部に入り
過床Ｂを上向きに流れ被処理水中の汚泥等の懸
濁物は粒状材により捕捉される。過床Ｂを出
る清澄した被処理水は内筒３内を上昇し洗浄分離
槽９の傍を通つて処理水出口５から系外に出る。
処理水出口５の取付けられている高さは一定であ
るので被処理水が流動床Ａ及び過床Ｂを通過す
る際の圧損失H1、分だけ処理槽１内の液面L1が
上昇する。従つて過床Ｂの抵抗が増加すれば
H1も大きくなり液面L1も上昇する。汚泥等で汚
れた材は処理槽１の材抜出口２からポンプ１
３で供給される循環水で作動するエジエクター１
７により抜き出され移送管１８を経由して洗浄分
離槽９の中間部の材流入口１９に供給される。
材は移送管１８を通る間に乱流による揺動作用
を受け付着している汚泥等は剥離して洗浄分離槽
９に入る。材は比重が大きいため洗浄部Ｄを下
降し上昇してくる清澄な処理水と向流接触し洗浄
されて分散板２０により過床Ｂ上面に均一に散
布される。洗浄分離槽９の分離部Ｃを上昇する汚
泥等を含んだ水は一部は循環水として出口管１１
からポンプ１３により一定量導出され、残りは洗
浄排水として液位調節器１２に入り適宜高さの洗
浄水出口管１０より系外に排出される。洗浄分離
槽９の水バランスは次の通りである。材流入口
１９から洗浄分離槽９に入る水量はポンプ１３に
より循環される水と材抜出口２で材１６に同
伴する被処理水との和である。従つて分離部Ｃを
上昇する水量はこれらと洗浄部Ｄを上昇してくる
洗浄水の合算された量になる。材を充分に洗浄
して過床Ｂに戻すためには洗浄部Ｄを上昇する
清澄処理水の量を適宜維持しなければならない。
このためには洗浄水出口管１０から出る水量をこ
れに見合つた量としなければならないがこの水量
は内筒の水面L2と液位調節器１２の水面L3との
水位差H2に比例するので液位調節器１２の抜き
出しノズルの高さを好適な位置にすればよい。 The operation of the wastewater treatment apparatus of the embodiment having the above configuration will be explained. Top raw water inlet 1 of waste water tank 1
The water to be treated introduced from 5 is biologically treated and purified by microorganisms attached to and in contact with the carrier of the fluidized bed A, which is fluidized by gas such as air supplied from the blowing pipe 6 and rising in the tank. Ru. The water to be treated that has left the fluidized bed A enters the lower part of the overbed B from the outside in the radial direction by the guide plate 4 at the bottom of the treatment tank 1, and flows upward through the overbed B, where sludge, etc. in the water to be treated is suspended. Turbid matter is captured by the granular material. The clarified treated water leaving the overbed B rises inside the inner cylinder 3, passes by the washing separation tank 9, and exits the system from the treated water outlet 5.
Since the installed height of the treated water outlet 5 is constant, the liquid level L 1 in the treatment tank 1 rises by the pressure loss H 1 when the treated water passes through the fluidized bed A and the overbed B. do. Therefore, if the resistance of overbed B increases
H 1 also increases and the liquid level L 1 also rises. Materials contaminated with sludge, etc. are pumped from material extraction port 2 of treatment tank 1 to pump 1.
Ejector 1 operated by circulating water supplied by 3
7 and supplied to the material inlet 19 in the intermediate part of the cleaning separation tank 9 via the transfer pipe 18.
While the material passes through the transfer pipe 18, it is subjected to shaking action due to turbulence, and adhered sludge and the like are peeled off, and the material enters the cleaning separation tank 9. Since the material has a high specific gravity, it descends through the washing section D and comes into countercurrent contact with the rising clear treated water, is washed, and is uniformly spread over the upper surface of the overbed B by the dispersion plate 20. A portion of the water containing sludge, etc. rising through the separation section C of the washing separation tank 9 is passed through the outlet pipe 11 as circulating water.
A certain amount is drawn out by the pump 13, and the remainder enters the liquid level regulator 12 as washing water and is discharged out of the system from the washing water outlet pipe 10 at an appropriate height. The water balance of the washing separation tank 9 is as follows. The amount of water entering the cleaning separation tank 9 from the material inlet 19 is the sum of the water circulated by the pump 13 and the water to be treated that accompanies the material 16 at the material extraction port 2. Therefore, the amount of water rising through the separation section C is the sum of these amounts and the washing water rising through the washing section D. In order to sufficiently wash the material and return it to the overbed B, the amount of clarified water flowing up the washing section D must be maintained appropriately.
To achieve this, the amount of water coming out of the wash water outlet pipe 10 must be made commensurate with this, and this amount of water is proportional to the water level difference H 2 between the water level L 2 of the inner cylinder and the water level L 3 of the liquid level regulator 12 . Therefore, the height of the extraction nozzle of the liquid level regulator 12 may be set to a suitable position.
運転停止時等に粒状担体７が沈降し処理槽１の
下部に堆積した場合は予備ノズル８より気体を吹
きこめば比重の軽い担体７は粒状材１６の層か
ら浮上して分離され流動床Ａに移行される。本実
施例に於いては粒状材の抜き出し移送はエジエ
クターによつているが、これに限らず例えばエヤ
リフト等の他の移送手段の使用も可能である。 If the granular carrier 7 settles and accumulates at the bottom of the treatment tank 1 when the operation is stopped, etc., by blowing gas through the preliminary nozzle 8, the carrier 7 with a lighter specific gravity floats up from the layer of granular material 16 and is separated, forming the fluidized bed A. will be moved to In this embodiment, the granular material is extracted and transferred using an ejector, but the ejector is not limited to this, and other transfer means such as an air lift can also be used.
（発明の効果）
本発明によれば従来の技術には無かつた次のよ
うな顕著な効果が得られるので本発明は産業上極
めて有益である。(Effects of the Invention) According to the present invention, the following remarkable effects not found in conventional techniques can be obtained, and therefore the present invention is extremely useful industrially.
(イ) 生物処理の流動床部は気液向流の流動床であ
り、接触効率が高いので処理槽単位容積当りの
BOD負荷を高くできる。(b) The fluidized bed section of biological treatment is a fluidized bed with gas-liquid countercurrent flow, and the contact efficiency is high, so the amount of water per unit volume of the treatment tank is
Can increase BOD load.
(ロ) 過床の方式は材側は比重差による下向き
流れ、水側は上向きの向流式であり汚泥等の捕
捉率が高いとともに材の系外流出も非常に少
ない。(b) The over-bed method uses a counter-flow method in which the material side flows downward due to the difference in specific gravity, and the water side flows upward, resulting in a high capture rate of sludge, etc., and very little material flowing out of the system.
(ハ) 材の洗浄は、エジエクターと移送管中での
洗浄に加えて洗浄分離槽での清澄処理水での二
次洗浄があるので充分である。(c) Cleaning of the material is sufficient because in addition to cleaning in the ejector and transfer pipe, there is a secondary cleaning with clarified water in the cleaning separation tank.
(ニ) 生物処理床と過処理床を一槽の中に一体化
しているので装置がコンパクトになり設置面積
及び設備費ともに大巾に節減できる。(d) Since the biological treatment bed and the overtreatment bed are integrated into one tank, the equipment is compact and the installation area and equipment costs can be reduced significantly.
第１図は本発明の実施例を示した概略縦断面図
である。
１：処理槽、２：材抜出口、３：内筒、４：
案内板、５：処理水出口、６：気体吹込管、７：
粒状担体、８：予備ノズル、９：洗浄分離槽、１
０：洗浄水出口管、１１：循環水出口管、１２：
液位調節器、１３：ポンプ、１４：循環水管、１
５：原水入口、１６：粒状材、１７：エジエク
ター、１８：移送管、１９：材流入口、２０：
分散板、Ａ：流動床、Ｂ：過床、Ｃ：分離部、
Ｄ：洗浄部。
FIG. 1 is a schematic vertical sectional view showing an embodiment of the present invention. 1: Processing tank, 2: Material extraction port, 3: Inner cylinder, 4:
Guide plate, 5: Treated water outlet, 6: Gas blowing pipe, 7:
Granular carrier, 8: Preliminary nozzle, 9: Washing separation tank, 1
0: Cleaning water outlet pipe, 11: Circulating water outlet pipe, 12:
Liquid level regulator, 13: Pump, 14: Circulating water pipe, 1
5: Raw water inlet, 16: Granular material, 17: Ejector, 18: Transfer pipe, 19: Material inlet, 20:
Dispersion plate, A: fluidized bed, B: overbed, C: separation section,
D: Cleaning section.
Claims (1)
て生物的に浄化処理する廃水処理装置に於いて、
(イ)頂部から被処理水を下向きに流し下部から気体
を吹きこんで粒状担体の流動床を形成する処理槽
と、(ロ)前記処理槽内部に立設され、上部には処理
水出口と下半部には粒状材が堆積し下向きに移
動する過床を内蔵する内筒と、(ハ)前記内筒の上
方に架設され、最上部には洗浄水出口管を有する
液位調節器と循環水出口を具備しその下方には分
離部を介在して材流入口とさらにその下方には
洗浄部を介在して分散板を具備した洗浄分離槽
と、(ニ)前記洗浄分離槽の循環水出口からの循環水
を用いて前記処理槽の底部から粒状材を抜き出
し、前記洗浄分離槽の材流入口迄移送する、移
送手段とを設けたことを特徴とする廃水処理装
置。1. In a wastewater treatment device that biologically purifies wastewater by bringing it into contact with a granular carrier to which a biofilm is attached,
(b) A treatment tank in which the water to be treated flows downward from the top and gas is blown in from the bottom to form a fluidized bed of granular carriers; (c) an inner cylinder having a built-in overbed in which granular material is deposited and moves downward; and (c) a liquid level regulator installed above the inner cylinder and having a wash water outlet pipe at the top. (d) a cleaning separation tank equipped with a circulating water outlet, a material inlet with a separation part interposed below it, and a dispersion plate further below it with a washing part interposed therebetween; (d) circulation of the cleaning separation tank; A wastewater treatment device comprising: a transfer means for extracting particulate material from the bottom of the treatment tank using circulating water from a water outlet and transferring it to the material inlet of the washing and separation tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62273351A JPH01115497A (en) | 1987-10-30 | 1987-10-30 | Waste water treating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62273351A JPH01115497A (en) | 1987-10-30 | 1987-10-30 | Waste water treating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01115497A JPH01115497A (en) | 1989-05-08 |
| JPH0154117B2 true JPH0154117B2 (en) | 1989-11-16 |
Family
ID=17526687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62273351A Granted JPH01115497A (en) | 1987-10-30 | 1987-10-30 | Waste water treating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01115497A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0380998A (en) * | 1989-08-25 | 1991-04-05 | Ngk Insulators Ltd | Fluidized bed type waste water treatment method and apparatus |
| JPH0389997A (en) * | 1989-09-01 | 1991-04-15 | Ngk Insulators Ltd | Fluidized bed type waste water treatment method and apparatus |
| JP4139415B2 (en) * | 2006-05-16 | 2008-08-27 | 前澤工業株式会社 | Fluidized bed wastewater treatment equipment |
-
1987
- 1987-10-30 JP JP62273351A patent/JPH01115497A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01115497A (en) | 1989-05-08 |
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