JP3200774B2 - Gravel contact purification channel - Google Patents
Gravel contact purification channelInfo
- Publication number
- JP3200774B2 JP3200774B2 JP14302892A JP14302892A JP3200774B2 JP 3200774 B2 JP3200774 B2 JP 3200774B2 JP 14302892 A JP14302892 A JP 14302892A JP 14302892 A JP14302892 A JP 14302892A JP 3200774 B2 JP3200774 B2 JP 3200774B2
- Authority
- JP
- Japan
- Prior art keywords
- gravel
- area
- water
- region
- contact purification
- 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 - Fee Related
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
- Biological Treatment Of Waste Water (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、礫等を充填してなる礫
充填層を有し、導入した海水や河川水を移動させること
によって浄化する礫間接触浄化水路であって、特に礫充
填層における礫への貝類の付着防止手段を有する礫間接
触浄化水路に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contact purification water channel between gravel, which has a gravel filling layer filled with gravel and the like, and purifies the water by moving the introduced seawater or river water. The present invention relates to a gravel contact purification channel having means for preventing shellfish from adhering to gravel in a bed.
【0002】[0002]
【従来の技術】近年、汚濁河川の河川水の浄化にあって
は、主に河川敷に形成した水路に河川水を導き、水路の
自浄能力を利用して浄化した水を河川に戻す方法が普及
しつつある。前記水路は、礫を充填して形成した礫充填
層を有している。前記礫充填層は、付着生物膜を多層と
することにより、礫に形成された付着生物膜による浄化
能を増強すること、浮遊性懸濁物の接触、沈殿等の機会
が大幅に増加して除去効率が増大すること、及び捕捉し
た懸濁物を抑留する空間を確保すること等を、目的とし
ている。また、前記河川水の浄化方法は、湖沼や、海洋
の浄化にも応用されて、より有効な利用方法の研究が進
められている。2. Description of the Related Art In recent years, in purifying river water of a polluted river, a method of guiding river water mainly to a channel formed on a riverbed and returning purified water to the river by utilizing the self-cleaning ability of the channel has become widespread. I am doing it. The waterway has a gravel filling layer formed by filling gravel. The gravel-filled layer has a multiplicity of attached biofilms, which enhances the purification ability of the attached biofilms formed on the gravel, greatly increases the chances of contact with suspended suspensions, sedimentation, etc. The purpose is to increase the removal efficiency and to secure a space for retaining the captured suspension. Further, the river water purification method is also applied to the purification of lakes and marshes and the ocean, and research on more effective utilization methods is being pursued.
【0003】前記水路は、捕捉懸濁物や付着生物の増殖
による礫充填層の礫間の目づまり対策が浄化能力の保持
に問題となる。礫間に生成される微小植物等の通常の生
物膜は、礫層の下部に設置した散気管から空気を水中に
放出することにより、放出した空気が水中を上昇する際
に生じる剪断力の作用で比較的容易に剥離される。In the above-mentioned water channel, measures against clogging between the gravels in the gravel packed layer due to the growth of trapped suspended matter and attached organisms pose a problem in maintaining the purification ability. Normal biofilms such as micro-plants formed between gravel are caused by the action of shear force generated when the released air rises in the water by releasing air into the water from the air diffuser installed under the gravel layer. Is relatively easily peeled.
【0004】[0004]
【発明が解決しようとする課題】しかしながら、前記水
路の内特に海洋に適用されるものは、礫充填層にムラサ
キイガイやフジツボ等の付着性の貝類の繁殖場所となる
から、これらの貝類が礫間を閉塞して礫充填層の浄化能
力を減衰することが懸念されているが、前記貝類は、前
述の散気管からの空気放出で除去することが困難である
ことは勿論、水洗浄によっても剥離が殆ど不可能であ
る。ところで、海洋に設置される構造物表面への貝類の
付着を防止方法としては、構造物表面に高速水流を形成
する方法や、水温を一時的に高温に保つ温水処理などが
あるが、前記各方法は、以下の理由で前記のような礫間
接触を利用した浄化水路に適用することができない。す
なわち、前記高速水流を形成する方法は、礫充填層が有
効に機能する通常の運転水流速が0.1から1.0cm
/secであることに対して、貝類の付着防止に有効な
水流速が100cm/secと極めて大きく、礫充填層
における接触、沈殿、生物分解の作用が効果的に働かな
くなるといった問題がある。また、前記温水処理は、水
温を40度以上に保持して貝類を死滅させるものである
が、付着貝類だけでなく礫表面に付着して付着生物膜を
形成する付着生物まで斃死させてしまうから、礫充填層
の浄化能力を著しく減退させるといった問題がある。However, among the above-mentioned waterways, those applied to the ocean, in particular, serve as a breeding site for adherent shellfish such as mussels and barnacles in the gravel-filled layer. There is a concern that the purification ability of the gravel-packed layer may be reduced by clogging, but it is difficult to remove the shellfish by air release from the air diffuser, and of course, the shellfish is also peeled off by washing with water. Is almost impossible. By the way, as a method for preventing shellfish from adhering to the surface of a structure installed in the ocean, there are a method of forming a high-speed water flow on the surface of the structure, a warm water treatment for temporarily keeping the water temperature at a high temperature, and the like. The method cannot be applied to the purification channel using the inter-gravel contact as described above for the following reasons. That is, the method for forming the high-speed water flow is such that the normal operating water flow velocity at which the gravel packed bed effectively functions is 0.1 to 1.0 cm.
/ Sec, there is a problem that the water flow rate effective for preventing the adhesion of shellfish is extremely large at 100 cm / sec, and the action of contact, sedimentation, and biodegradation in the gravel packed bed does not work effectively. Further, the hot water treatment kills shellfish by maintaining the water temperature at 40 ° C. or higher, but not only attached shellfish but also attached organisms that attach to the surface of gravel and form attached biofilms are killed. However, there is a problem that the purification capacity of the gravel packed bed is significantly reduced.
【0005】本発明は、前述の課題に鑑みてなされたも
ので、礫を充填した層で水中の藻類や浮遊性懸濁物を除
去することは勿論、礫への貝類の付着を防止して礫充填
層の浄化能力を維持することができる礫間接触浄化水路
を提供することを目的とするものである。[0005] The present invention has been made in view of the above-mentioned problems, and it is not only possible to remove algae and suspended suspended matter from water in a layer filled with gravel, but also to prevent shellfish from adhering to gravel. It is an object of the present invention to provide a contact purification water channel between gravel which can maintain the purification ability of a gravel packed bed.
【0006】[0006]
【課題を解決するための手段】前記請求項1記載の発明
では、礫充填層の上流部分に無曝気領域を設け、かつ該
無曝気領域の下流の下部に酸素供給手段を取り付けてな
る曝気領域を設けたことを特徴とする礫間接触浄化水路
を前記課題の解決手段とした。前記請求項2記載の発明
では、前記請求項1記載の礫間接触浄化水路であって、
礫充填層に充填すべき礫の内の少なくとも一部に着脱手
段を取り付けて礫間接触浄化水路に対して着脱自在とし
たことを特徴とする礫間接触浄化水路を前記課題の解決
手段とした。前記請求項3記載の発明では、前記請求項
1又は2のいずれかに記載の礫間接触浄化水路であっ
て、礫充填層を構成する礫の内の少なくとも一部をプラ
スチック等で比重が1前後の人工礫に置換したことを特
徴とする礫間接触浄化水路を前記課題の解決手段とし
た。前記請求項4記載の発明では、前記請求項1ないし
3のいずれかに記載の礫間接触浄化水路であって、前記
曝気領域の下流に水中の浮遊性懸濁物等を沈殿させるた
めの沈殿領域を設けたことを特徴とする礫間接触浄化水
路を前記課題の解決手段とした。According to the first aspect of the present invention, a non-aeration area is provided in an upstream portion of the gravel packed bed, and an oxygen supply means is attached to a lower portion downstream of the non-aeration area. A contact purification water channel between gravel, which is characterized by providing the above, is a means for solving the above-mentioned problem. In the invention according to claim 2, the inter-gravel contact purification water channel according to claim 1,
Attachment / detachment means is attached to at least a part of the gravel to be filled in the gravel filling layer to make it detachable from / to the gravel contact purification water channel. . According to the third aspect of the present invention, there is provided the inter-gravel contact purification water channel according to any one of the first to second aspects, wherein at least a part of the gravel constituting the gravel packed bed is made of plastic or the like and has a specific gravity of 1 or more. A contact purification water channel between gravel, which has been replaced with artificial gravel before and after, is used as a means for solving the above problem. In the invention according to claim 4, the inter-gravel contact purification water channel according to any one of claims 1 to 3, wherein a sediment for sedimenting a suspended suspension or the like in water downstream of the aeration area. A contact purification water channel between pebbles characterized by providing an area is a means for solving the above-mentioned problem.
【0007】[0007]
【作用】前記請求項1記載の発明によれば、無曝気領域
で水中の貝類の幼性を溶存酸素不足によって斃死させ
て、無曝気領域より下流の礫充填層への貝類の繁殖を防
止する。前記請求項2記載の発明によれば、貝類が付着
した礫を水路から取り出して新しいものと交換すること
により、礫充填層の浄水能力を良好に保持することがで
きる。前記請求項3記載の発明によれば、人工礫は、比
重が1前後であるから、水路内に安定して設置できると
ともに、通常の岩石より比重が小さいことより水路への
着脱等も容易である。また、人工礫を貝類の付着が困難
な材料で形成すれば、貝類の付着を防止して、人工礫の
交換サイクルを延長する。前記請求項4記載の発明によ
れば、無曝気領域で水中の溶存酸素を減少して貝類の幼
生を斃死させるとともに、曝気領域で礫表面の生物膜の
作用によって溶解性有機物や浮遊性懸濁物を分解又は捕
捉し、かつ沈殿領域で前記処理の完了した水を撹拌する
ことなく安定に保持して水中に残留する浮遊性懸濁物を
沈殿させる。According to the first aspect of the present invention, the juveniles of shellfish in water are killed by lack of dissolved oxygen in the non-aerated area, and the propagation of shellfish on the gravel-filled layer downstream from the non-aerated area is prevented. . According to the second aspect of the present invention, the gravel to which the shellfish has adhered is taken out of the water channel and replaced with a new one, so that the water purification capacity of the gravel packed layer can be favorably maintained. According to the third aspect of the present invention, since the artificial gravel has a specific gravity of about 1, it can be stably installed in a waterway, and can be easily attached to and detached from the waterway because the specific gravity is smaller than that of ordinary rock. is there. Further, if the artificial gravel is formed of a material to which the shellfish is not easily adhered, the adhesion of the shellfish is prevented and the exchange cycle of the artificial gravel is extended. According to the invention of claim 4, the dissolved oxygen in the water is reduced in the non-aerated area to kill the larvae of the shellfish, and in the aerated area, the soluble organic matter and the buoyant suspension are suspended by the action of the biofilm on the surface of the gravel. Decompose or trap the matter and stabilize, without stirring, the treated water in the settling zone without agitation to precipitate any suspended suspension remaining in the water.
【0008】[0008]
【実施例】以下本発明の一実施例を、図1ないし図6を
参照して説明する。図中符号1は海水を浄化する本実施
例の礫間接触浄化水路、2は礫充填層、3は無曝気領
域、4は曝気領域、5は沈殿領域、6aは第1の礫洗浄
用空気供給用ブロワー(気泡供給手段)、6bは第2の
溶存酸素供給用ブロワー(酸素供給手段)、7は浄化す
べき水が導入される汚水ピット、8は処理後の水を貯溜
しておく浄水ピット、9は礫を礫充填層2に着脱自在に
するための網かご(着脱手段)である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. In the figure, reference numeral 1 denotes a gravure contact purification channel of the present embodiment for purifying seawater, 2 denotes a gravel packed layer, 3 denotes a non-aerated area, 4 denotes an aerated area, 5 denotes a sedimentation area, and 6a denotes first gravel cleaning air. A supply blower (bubble supply means), 6b is a second dissolved oxygen supply blower (oxygen supply means), 7 is a sewage pit into which water to be purified is introduced, and 8 is purified water for storing treated water. The pit 9 is a net basket (attachment / detachment means) for making the gravel detachable from the gravel filling layer 2.
【0009】図1に示すように、礫間接触浄化水路1
は、礫充填層2と、礫充填層2の上流側に隣接する汚水
ピット7と、礫充填層2の下流(図1右側)側に隣接す
る浄水ピット8とで構成されている。礫充填層2は、無
曝気領域3と、曝気領域4と、沈殿領域5とで構成され
ている。無曝気領域3は、最上流部分と、無曝気領域3
を水流方向に3等分する位置に仕切板10を設置するこ
とにより、上流側から上流領域3aと、中流領域3b
と、下流領域3cの3段に仕切られている。仕切板10
は、耐腐食性材料で多孔性又は網状に形成されている板
状の部材であって、無曝気領域3内に無駄な水の滞留が
起きない程度の高い透水性を有する。仕切板10で仕切
った無曝気領域3の最上流に位置する上流層3a及び中
央部分に位置する中流層3bには、耐腐食性材料で形成
されている前記網かご9が挿入されている。図2に示す
ように、網かご9は、上部が開口した立方体状であっ
て、内部に無曝気領域3に充填すべき礫11が充填され
ている。また、網かご9は、上部にワイヤ12が取り付
けられて上流領域3a、中流領域3bから容易に吊り出
すことができることから、上流領域3a、中流領域3b
に対して着脱が容易であって、貝類が付着した際に網か
ご9ごと新しいものと交換することにより上流領域3
a、中流領域3bの浄化能力を容易に保持することがで
きるようになっている。無曝気領域3の最下流に位置す
る下流領域3cは、礫11を網かご9を介さずに直接投
入した状態で充填したものである。曝気領域4及び沈殿
領域5は、下流領域3c同様、無曝気領域3に直接礫1
1を充填したものである。下流領域3c、曝気領域4及
び沈殿領域5には、下底部に設置した散気管6cから空
気(気泡)を吹き出して礫材を洗浄する強力な第1の礫
洗浄用空気供給用ブロワー6aが取り付けられている。
前記散気管6cは、下流領域3c、曝気領域4及び沈殿
領域5の下底部にその長さ方向に延びる長尺な部材であ
って、下流領域3c、曝気領域4及び沈殿領域5の幅方
向に複数本設置されている。第2の溶存酸素供給用ブロ
ワー6bは、前記第1の溶存酸素供給用ブロワー6aと
概略等しい構成でかつ第1の溶存酸素供給用ブロワー6
aほど強力でない曝気能力を発揮する装置であって、散
気管6cを曝気領域4の下底部のみに配したものであ
る。無曝気領域3の下流領域3c、曝気領域4及び沈殿
領域5の下底部には、下流領域3c、曝気領域4及び沈
殿領域5で剥離した生物膜や、沈殿した懸濁物等を排出
する排泥装置13が取り付けられている。排泥装置13
は、無曝気領域3の下流領域3c、曝気領域4及び沈殿
領域5の下底部に開口して、この範囲に沈殿する沈殿物
を吸引して、外部に排出するようになっている。前記礫
11は、自然礫11に代えてプラスチック等で形成した
人工礫14を用いてもよい。人工礫14は、図3ないし
図6に示す各形態のように、網かご9又は下流領域3
c、曝気領域4及び沈殿領域5に充填することにより充
分な透水性を維持するものであれば、いかなる形態であ
ってもよい。図3及び図4に示す人工礫14は、ともに
筒状に形成したものであって、主に水が通り抜ける空間
を確保するものである。図5及び図6は、ともに湾曲板
状に形成したものであって、主に藻類等を吸着すべき表
面積を確保するものである。前記人工礫14は、吸水性
を有さない水切れのよい形態に形成することにより、無
曝気領域3からの引き上げ時に引き上げ荷重が軽減し
て、礫の交換作業を容易とする。また、人工礫14は、
比重を1前後として形成すれば、自然礫11に比して引
き上げ作業の容易さが確保されるとともに、無曝気領域
3に設置時に浮上したりすることが無く、設置状態が安
定である。[0009] As shown in FIG.
Is composed of a gravel-filled layer 2, a sewage pit 7 adjacent to the upstream side of the gravel-filled layer 2, and a water purification pit 8 adjacent to the downstream side (right side in FIG. 1) of the gravel-filled layer 2. The gravel-filled layer 2 includes a non-aerated region 3, an aerated region 4, and a settling region 5. The non-aerated area 3 includes the uppermost stream portion and the non-aerated area 3.
The partition plate 10 is provided at a position where the partition plate 10 is divided into three equal parts in the water flow direction.
, And three sections of the downstream area 3c. Partition plate 10
Is a plate-shaped member made of a corrosion-resistant material and formed in a porous or net-like shape, and has a high water permeability such that unnecessary water does not stay in the non-aeration area 3. The mesh basket 9 made of a corrosion-resistant material is inserted into the upstream layer 3a located at the uppermost stream of the non-aeration area 3 and the middle layer 3b located at the center of the non-aeration area 3 partitioned by the partition plate 10. As shown in FIG. 2, the net basket 9 has a cubic shape with an open top, and is filled with gravel 11 to be filled in the non-aerated region 3. In addition, since the wire basket 9 has the wire 12 attached to the upper portion thereof and can be easily suspended from the upstream region 3a and the middle region 3b, the upstream region 3a and the middle region 3b
It is easy to attach / detach to the upstream area 3 by replacing the net basket 9 with a new one when the shellfish adheres.
a, it is possible to easily maintain the purification ability of the middle flow region 3b. The downstream area 3c located at the most downstream of the non-aeration area 3 is filled with the gravel 11 directly charged without passing through the net basket 9. The aeration area 4 and the sedimentation area 5 are directly in the non-aeration area 3 like the downstream area 3c.
1 is filled. A powerful first gravel cleaning air supply blower 6a that blows out air (bubbles) from the air diffuser 6c installed at the lower bottom to clean the gravel material is attached to the downstream region 3c, the aeration region 4 and the sedimentation region 5. Have been.
The air diffusion tube 6c is a long member extending in the length direction at the lower bottom of the downstream region 3c, the aeration region 4 and the sedimentation region 5, and extends in the width direction of the downstream region 3c, the aeration region 4 and the sedimentation region 5. There are multiple installations. The second dissolved oxygen supply blower 6b has substantially the same configuration as the first dissolved oxygen supply blower 6a, and has a configuration similar to that of the first dissolved oxygen supply blower 6a.
This is an apparatus that exhibits an aeration ability that is not as strong as a, and in which the air diffuser 6c is arranged only at the lower bottom of the aeration area 4. At the lower bottom of the downstream region 3c, the aeration region 4 and the sedimentation region 5 of the non-aeration region 3, a drainage for discharging the biofilm detached in the downstream region 3c, the aeration region 4 and the sedimentation region 5, and the suspended solids and the like. A mud device 13 is attached. Sludge removal device 13
Is opened at the lower portion of the downstream region 3c of the non-aeration region 3, the aeration region 4 and the sedimentation region 5, so that the sediment precipitated in this region is sucked and discharged to the outside. The gravel 11 may be an artificial gravel 14 made of plastic or the like instead of the natural gravel 11. As shown in FIGS. 3 to 6, the artificial gravel 14 is used for the net 9 or the downstream region 3.
c, any form may be used as long as sufficient water permeability is maintained by filling the aeration area 4 and the precipitation area 5. The artificial gravels 14 shown in FIGS. 3 and 4 are both formed in a cylindrical shape, and mainly secure a space through which water passes. FIGS. 5 and 6 are both formed in a curved plate shape to secure a surface area for mainly absorbing algae and the like. The artificial gravel 14 is formed in a water-absorptive and well-drained form, whereby the lifting load is reduced when the artificial gravel 14 is lifted from the non-aerated area 3, thereby facilitating the work of exchanging gravel. Also, the artificial gravel 14
When the specific gravity is set to be about 1, ease of lifting work is secured as compared with the natural gravel 11, and the installation state is stable without floating on the non-aeration area 3 at the time of installation.
【0010】以下、本実施例の作用を説明する。前記礫
間接触浄化水路1は、汚水ピット7に導入した汚水を以
下の順で処理して浄化する。まず、汚水ピット7に導入
した水は、仕切板10を透過して上流領域3aに流入す
る。上流領域3a及び中流領域3bは、内部に充填され
ている礫11に藻類や浮遊性懸濁物を付着させるかある
いは沈殿させるとともに、付着貝類を斃死させて下流で
の繁殖を防止する。すなわち、上流領域3a及び中流領
域3bは、第1の礫洗浄用空気供給用ブロワー6aや第
2の溶存酸素供給用ブロワー6bやそのほかの溶存酸素
の供給源を有するものではないから、水中の生物が酸素
を消費して水中の溶存酸素が低下する。図7に示すよう
に、水中の溶存酸素は、中流領域3bの最下流部分にお
いては、殆どゼロである。その結果、無曝気領域3は、
前記汚水が下流領域3cに到達するまでに、貝類を水流
に乗って移動する幼生に至るまで斃死させて、図8に示
すように、下流領域3cより下流における貝類の繁殖を
防止するのである。The operation of the embodiment will be described below. The rubble contact purification water channel 1 treats and purifies the sewage introduced into the sewage pit 7 in the following order. First, the water introduced into the sewage pit 7 passes through the partition plate 10 and flows into the upstream area 3a. The upstream region 3a and the midstream region 3b cause algae or a suspended suspension to adhere to or settle on the pebbles 11 filled therein, and also kill the attached shellfish to prevent propagation on the downstream. That is, since the upstream region 3a and the middle flow region 3b do not have the first blower 6a for supplying air for washing gravel, the second blower 6b for supplying dissolved oxygen, and other supply sources of dissolved oxygen, the underwater organisms are not provided. Consumes oxygen and the dissolved oxygen in the water decreases. As shown in FIG. 7, the dissolved oxygen in the water is almost zero in the most downstream portion of the middle flow region 3b. As a result, the non-aerated area 3
By the time the sewage reaches the downstream region 3c, the shellfish are killed until they reach the larva that moves in the water flow, and as shown in FIG. 8, the reproduction of the shellfish downstream of the downstream region 3c is prevented.
【0011】前記無曝気領域3での処理を完了した汚水
は、曝気領域4に流入する。曝気領域4は、第2の溶存
酸素供給用ブロワー6bで溶存酸素を供給する結果、水
中の溶存酸素を急速に増加させて、礫11表面に生息す
る生物の繁殖を促進する。曝気領域4は、特に水溶性有
機物、栄養分、窒素等の分解能に優れる好気性生物の繁
殖を促進して、これらを減少する。The sewage which has been treated in the non-aeration area 3 flows into the aeration area 4. The aeration area 4 supplies dissolved oxygen by the second dissolved oxygen supply blower 6b, so that the dissolved oxygen in the water is rapidly increased to promote the propagation of organisms living on the surface of the gravel 11. The aeration area 4 promotes and reduces the growth of aerobic organisms that are particularly excellent in the resolution of water-soluble organic matter, nutrients, nitrogen, and the like.
【0012】沈殿領域5は、流入した曝気領域4での処
理が完了した水を、緩やかに流動させて、水中の懸濁物
等を完全に沈殿させる。また、沈殿領域5は、無曝気領
域であるが、礫11表面に生息する好気性でない生物が
繁殖して生物膜を形成し、曝気領域4程ではないが、礫
11における汚濁物の生物分解等を発揮する。The sedimentation zone 5 allows the water, which has been treated in the aeration zone 4 to flow in, to flow gently to completely settle suspended matter in the water. The sedimentation area 5 is a non-aerated area, but non-aerobic organisms inhabiting the surface of the gravels 11 breed to form a biofilm. Although not as large as the aeration area 4, biodegradation of pollutants in the gravels 11 is performed. And so on.
【0013】したがって、本実施例の礫間接触浄化水路
1によれば、水中の藻類や浮遊性懸濁物を効率よく除去
することができることは勿論、無曝気領域3が貝類を斃
死させて、礫充填層2の下流における貝類の繁殖を防止
し、礫充填層2の優秀な浄化能力を保持することができ
るから、その需要が向上する。Therefore, according to the inter-gravel contact purification water channel 1 of the present embodiment, not only can the algae and the suspended suspended matter in the water be efficiently removed, but also the non-aerated area 3 kills the shellfish, Since the propagation of shellfish downstream of the gravelly packed bed 2 can be prevented and the excellent purification ability of the gravelly packed bed 2 can be maintained, the demand is improved.
【0014】[0014]
【発明の効果】以上説明したように、前記請求項1記載
の発明によれば、礫充填層の上流部分に無曝気領域を設
け、かつ該無曝気領域の下流の下部に酸素供給手段を取
り付けてなる曝気領域を設けたことを特徴とする礫間接
触浄化水路を前記課題の解決手段としたから、水中の藻
類や浮遊性懸濁物を効率よく除去することができること
は勿論、無曝気領域が貝類を斃死させて、礫充填層の下
流における貝類の繁殖を防止し、礫充填層の優秀な浄化
能力を保持することができ、その需要が向上する。As described above, according to the first aspect of the present invention, a non-aeration area is provided in an upstream portion of the gravel packed bed, and an oxygen supply means is provided in a lower portion downstream of the non-aeration area. The purifying water channel between gravel, which is characterized by providing an aeration area consisting of the following, was used as a means for solving the above-mentioned problem, so that algae and suspended suspended matter in water can be efficiently removed. Can kill shellfish and prevent shellfish from breeding downstream of the gravel-filled bed, maintaining the excellent purification capacity of the gravel-packed layer, and increasing its demand.
【0015】前記請求項2記載の発明によれば、前記請
求項1記載の礫間接触浄化水路であって、礫充填層に充
填すべき礫の内の少なくとも一部に着脱手段を取り付け
て礫間接触浄化水路に対して着脱自在としたことを特徴
とする礫間接触浄化水路を前記課題の解決手段としたか
ら、前記請求項1記載の発明の効果を奏することは勿
論、貝類の付着した礫の交換を簡単にして、礫充填層2
の浄化能力の確保を一層容易にする。According to the second aspect of the present invention, there is provided the inter-gravel contact purification water channel according to the first aspect, wherein detachable means is attached to at least a part of the gravel to be filled in the gravel filling layer. The contact purification water channel between gravel is characterized in that it is detachable from the inter-contact purification water channel, so that the effect of the invention according to claim 1 is of course exerted, and the shellfish adheres. Exchange of gravel is easy, and gravel filling layer 2
To make it easier to ensure the purification capacity of the plant.
【0016】前記請求項3記載の発明によれば、前記請
求項1又は2のいずれかに記載の礫間接触浄化水路であ
って、礫充填層を構成する礫の内の少なくとも一部をプ
ラスチック等で比重が1前後の人工礫に置換したことを
特徴とする礫間接触浄化水路を前記課題の解決手段とし
たから、前記請求項1又は2のいずれかに記載の発明の
効果を奏することは勿論、前記請求項2記載の発明と同
様に礫の交換作業が容易であるとともに、無曝気領域に
安定に設置することができる。According to the third aspect of the present invention, in the inter-gravel contact purification water channel according to any one of the first or second aspects, at least a part of the gravel constituting the gravel filling layer is made of plastic. Since the contact purification water channel between gravel is characterized by having been replaced with artificial gravel having a specific gravity of about 1 by means of the above, the effect of the invention according to any one of claims 1 and 2 is achieved. Needless to say, as in the case of the second aspect of the present invention, the work of exchanging gravel is easy and can be stably installed in the non-aerated area.
【0017】前記請求項4記載の発明によれば、前記請
求項1ないし3のいずれかに記載の礫間接触浄化水路で
あって、前記曝気領域の下流に水中の浮遊性懸濁物等を
沈殿させるための沈殿領域を設けたことを特徴とする礫
間接触浄化水路を前記課題の解決手段としたから、前記
請求項1ないし3のいずれかに記載の発明の効果を奏す
ることは勿論、浮遊性懸濁物等をほぼ完全に沈殿除去し
て、一層高度の浄化能力を発揮できる。According to the fourth aspect of the present invention, there is provided the inter-gravel contact purification water channel according to any one of the first to third aspects, wherein a suspended suspension or the like in water is provided downstream of the aeration area. Since the contact purification water channel between gravel is characterized by providing a sedimentation region for sedimentation, the effect of the invention according to any one of claims 1 to 3 is, of course, achieved. Floating suspensions and the like can be almost completely settled and removed, and a higher purification ability can be exhibited.
【図1】本発明の一実施例を示す全体断面図である。FIG. 1 is an overall sectional view showing an embodiment of the present invention.
【図2】網かごを示す斜視図である。FIG. 2 is a perspective view showing a net basket.
【図3】人工礫の成形の一例を示す斜視図である。FIG. 3 is a perspective view showing an example of forming artificial gravel.
【図4】人工礫の成形の他の例を示す斜視図である。FIG. 4 is a perspective view showing another example of forming artificial gravel.
【図5】人工礫の成形の他の例を示す斜視図である。FIG. 5 is a perspective view showing another example of forming artificial gravel.
【図6】人工礫の成形の他の例を示す斜視図である。FIG. 6 is a perspective view showing another example of forming artificial gravel.
【図7】礫充填層の水路長と水中の溶存酸素濃度の関係
を示す図である。FIG. 7 is a diagram showing the relationship between the channel length of the gravel packed bed and the concentration of dissolved oxygen in water.
【図8】礫充填層の水路長と礫への貝付着量の関係を示
す図である。FIG. 8 is a graph showing the relationship between the length of a channel of a gravel-filled layer and the amount of shellfish attached to gravel.
1 礫間接触浄化水路 2 礫充填層 3 無曝気領域 4 曝気領域 5 沈殿領域 6a 第1の溶存酸素供給用ブロワー 6b 第2の溶存酸素供給用ブロワー 9 網かご 11 礫 14 人工礫 DESCRIPTION OF SYMBOLS 1 Gravel contact purification water channel 2 Gravel filling layer 3 Non-aeration area 4 Aeration area 5 Sedimentation area 6a First dissolved oxygen supply blower 6b Second dissolved oxygen supply blower 9 Net basket 11 Gravel 14 Artificial gravel
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7,DB名) C02F 3/06 C02F 3/10 C02F 1/00 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 7 , DB name) C02F 3/06 C02F 3/10 C02F 1/00
Claims (4)
入した海水や河川水を移動させることによって浄化する
礫間接触浄化水路であって、礫充填層の上流部分に無曝
気領域を設け、かつ該無曝気領域の下流の下部に酸素供
給手段を取り付けてなる曝気領域を設けたことを特徴と
する礫間接触浄化水路。Claims: 1. A gravel-contact purification channel having a gravel-filled layer filled with gravel or the like and purifying by moving introduced seawater or river water, wherein the upstream portion of the gravel-filled layer is not aerated. An aeration area provided with an area and an aeration area provided with an oxygen supply means at a lower portion downstream of the non-aeration area.
あって、礫充填層に充填すべき礫の内の少なくとも一部
に着脱手段を取り付けて礫間接触浄化水路に対して着脱
自在としたことを特徴とする礫間接触浄化水路。2. The inter-gravel contact purification water channel according to claim 1, wherein an attachment / detachment means is attached to at least a part of the gravel to be filled in the gravel filling layer and is detachable from the inter-gravel contact purification water channel. A contact purification water channel between gravel.
礫間接触浄化水路であって、礫充填層を構成する礫の内
の少なくとも一部をプラスチック等で比重が1前後の人
工礫に置換したことを特徴とする礫間接触浄化水路。3. The artificial gravel having a specific gravity of about 1 made of plastic or the like, wherein at least a part of the gravel constituting the gravel filling layer is made of plastic or the like. A gravel contact purification channel characterized by having been replaced with:
の礫間接触浄化水路であって、前記曝気領域の下流に水
中の浮遊性懸濁物等を沈殿させるための沈殿領域を設け
たことを特徴とする礫間接触浄化水路。4. The gravel-contact purification water channel according to claim 1, wherein a sedimentation area for sedimenting a suspended suspension or the like in water is provided downstream of the aeration area. A contact purification water channel between gravel.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14302892A JP3200774B2 (en) | 1992-06-03 | 1992-06-03 | Gravel contact purification channel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14302892A JP3200774B2 (en) | 1992-06-03 | 1992-06-03 | Gravel contact purification channel |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH05337483A JPH05337483A (en) | 1993-12-21 |
JP3200774B2 true JP3200774B2 (en) | 2001-08-20 |
Family
ID=15329234
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14302892A Expired - Fee Related JP3200774B2 (en) | 1992-06-03 | 1992-06-03 | Gravel contact purification channel |
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JP (1) | JP3200774B2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100392893B1 (en) * | 2000-07-03 | 2003-07-28 | 최상일 | Device for Purifying River Water |
JP4482419B2 (en) * | 2004-10-19 | 2010-06-16 | 中部電力株式会社 | Waste water treatment equipment |
JP2014046217A (en) * | 2012-08-29 | 2014-03-17 | Toshiba Corp | Organic waste water treatment unit, and organic waste water treatment system using the same |
CN110117084A (en) * | 2019-05-22 | 2019-08-13 | 江苏中百洲环境科技有限公司 | A kind of aeration sewage treatment method |
-
1992
- 1992-06-03 JP JP14302892A patent/JP3200774B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH05337483A (en) | 1993-12-21 |
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