JPH10244281A - Device for cleaning contaminated water of low concentration - Google Patents
Device for cleaning contaminated water of low concentrationInfo
- Publication number
- JPH10244281A JPH10244281A JP9065469A JP6546997A JPH10244281A JP H10244281 A JPH10244281 A JP H10244281A JP 9065469 A JP9065469 A JP 9065469A JP 6546997 A JP6546997 A JP 6546997A JP H10244281 A JPH10244281 A JP H10244281A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- water
- contact filter
- filter medium
- septic
- 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.)
- Pending
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)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、河川や湖沼の水
のように有機性汚濁物質を含む低濃度の汚染水を浄化す
るのに適した浄化装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a purifying apparatus suitable for purifying low-concentration contaminated water containing organic pollutants such as water from rivers and lakes.
【０００２】[0002]
【従来の技術】河川の水を浄化するための浄化装置とし
て、河川敷に設けた礫層に河川水を導入し、水中の固形
浮遊物質を礫層で濾過、沈澱させると共に、河川水中の
有機汚濁物質を礫表面に自然発生する微生物膜で酸化分
解し、浄化された水を元の河川に放流するようにしたも
のが知られている。しかし、上記の礫層を用いたもの
は、礫層に堆積した汚泥を除去し、目詰まりを防ぐため
に、礫層内部にエアーパイプを配設して随時に曝気し、
汚泥を浮遊させ、これをポンプで集める必要があった。
また、礫層の容積１m3当たり空間率が小さくて約４０％
以下であるため、汚濁物質の除去効率を大きくするため
には、礫層の容積を大きくし、設置面積を広くする必要
があった。また、礫が不定形であるため、汚泥の堆積す
る空間の大きさが不均一になり、礫洗浄時の均一曝気が
困難であった。更に、溶存酸素の補給がないため、浄化
効率が低下し、悪臭が発生することがあった。2. Description of the Related Art As a purification device for purifying river water, river water is introduced into a gravel layer provided on a riverbed, and solid suspended solids in the water are filtered and precipitated by the gravel layer, and organic pollution in the river water is reduced. It is known that the substance is oxidatively decomposed by a microbial membrane naturally occurring on the surface of gravel, and the purified water is discharged to the original river. However, in the case of using the above-mentioned gravel layer, in order to remove the sludge deposited on the gravel layer and to prevent clogging, an air pipe is arranged inside the gravel layer and aeration is performed as needed.
It was necessary to suspend the sludge and collect it with a pump.
Moreover, about 40% smaller in volume 1 m 3 per space ratio of the gravel layer
Therefore, in order to increase the pollutant removal efficiency, it was necessary to increase the volume of the gravel layer and increase the installation area. In addition, since the gravel is irregular in shape, the size of the space where the sludge accumulates becomes non-uniform, making it difficult to uniformly aerate the gravel during washing. Further, since there is no replenishment of dissolved oxygen, the purification efficiency is reduced and an odor may be generated.
【０００３】この問題を解決するため、河川の流路内に
流れ方向に沿って水槽を設置し、この水槽内に多数枚の
シート状接触材（織布）を流れに沿って並設し、その下
方の槽底部に散気管および汚泥引抜き管を設けること
（特開平８−１１８０号公報参照）、およびほぼ球形の
濾材（セメントボール）を充填した濾材槽と、１m3当た
り表面積の大きい接触材を充填した接触材槽とを流れ方
向に沿って配列し、濾材槽に曝気機能を含む汚泥排除手
段を、また接触材槽に空気供給管をそれぞれ設けること
（特開平７−２６５６１１号公報参照）等が提案され、
知られている。しかしながら、これらの浄化装置は、運
転中に散気管、曝気管等の空気供給管等を頻繁に駆動す
る必要があり、設備費や運転維持費が嵩むという問題が
あった。[0003] In order to solve this problem, a water tank is installed in the flow path of a river along the flow direction, and a large number of sheet-like contact materials (woven fabrics) are juxtaposed along the flow in the water tank. A diffuser pipe and a sludge withdrawal pipe are provided at the bottom of the tank (see JP-A-8-1180), and a filter medium tank filled with a substantially spherical filter medium (cement ball) is provided with a contact material having a large surface area per 1 m 3. And a contact material tank filled with water are arranged in the flow direction, and a sludge removing means having an aeration function is provided in the filter material tank, and an air supply pipe is provided in the contact material tank (see JP-A-7-265611). Etc. are proposed,
Are known. However, these purifying devices require frequent driving of air supply pipes such as a diffuser pipe and an aeration pipe during operation, and thus have a problem that equipment costs and operation and maintenance costs increase.
【０００４】[0004]
【発明が解決しようとする課題】この発明は、河川や湖
沼の低濃度汚染水を導入し、該汚染水から固形浮遊物質
を濾過、沈澱させ、かつ有機汚濁物質を微生物膜で酸化
分解した後、元の河川や湖沼等に放流するための浄化装
置において、運転中の曝気を必要とせず、河川等の低濃
度汚染水を落差で導入することで空気中の酸素を取り込
みながら、ＢＯＤ２０ppm 以下、ＳＳ３０ppm 以下の汚
染水をＢＯＤ５ppm 以下、ＳＳ５ppm 以下に清浄化で
き、しかも設置面積を狭くすることを可能にするもので
ある。SUMMARY OF THE INVENTION The present invention relates to a method for introducing low-concentration water from rivers and lakes, filtering and precipitating solid suspended solids from the contaminated water, and oxidizing and decomposing organic pollutants with a microbial membrane. In a purification device for discharging to the original rivers and lakes, BOD 20 ppm or less while taking in oxygen in the air by introducing low concentration polluted water such as rivers at the head without requiring aeration during operation, It can purify contaminated water of SS 30 ppm or less to BOD 5 ppm or less and SS 5 ppm or less, and can reduce the installation area.
【０００５】[0005]
【課題を解決するための手段】この発明に係る低濃度汚
染水の浄化装置は、水位の異なる複数個の浄化槽を、高
水位の浄化槽から低水位の浄化槽に水が溢流して流入す
るように水位の順に配設し、上記の浄化槽に、多数個の
接触濾材が充填された接触濾材槽を、隣接する低水位側
浄化槽に接するように、かつ接触濾材槽の下面が浄化槽
の底から離れ、浄化槽に流入した水が接触濾材槽を下か
ら上向きに流れて接触濾材槽の上から隣接する低水位側
浄化槽に溢流するように設け、河川や湖沼等の低濃度汚
染水を導入樋を介して最高水位の浄化槽に溢流により流
入させ、最低水位の浄化槽内接触濾材槽を通過した水を
導出樋に溢流させ、この導出樋を介して河川や湖沼等に
放流するようにしたことを特徴とする。According to the present invention, there is provided an apparatus for purifying low-concentration contaminated water, in which a plurality of septic tanks having different water levels are provided so that water overflows from a high-purified septic tank into a low-purified septic tank. Arranged in the order of water level, the above-mentioned septic tank, the contact filter medium tank filled with a large number of contact filter media, so as to be in contact with the adjacent low water-level septic tank, and the lower surface of the contact filter medium tank is separated from the bottom of the septic tank, Water flowing into the septic tank is provided so as to flow upward from the bottom of the contact filter tank and overflow from the top of the contact filter tank to the adjacent low-water-side septic tank, and introduce low-concentration contaminated water, such as rivers and lakes, through the introduction gutter. The water flowing through the contact filter media tank in the septic tank at the lowest level overflows into the outlet trough, and is discharged to rivers, lakes, etc. through this outlet trough. Features.
【０００６】接触濾材としては、吸収装置の気液の接触
に用いられるラシヒリング、サッシングリング、ベルル
サドル、インタロックスサドル、テラレッテパッキング
およびポールリング等の充填物を使用できるが、特に請
求項２に記載された接触濾材、すなわち鞍形フラップ
と、この鞍形フラップの両面に突設された複数個の中空
筒体および翼とからなり（特公昭４７−４１２２５号公
報、実公昭６３−２１３１７号公報および特開平８−１
５５４７８号公報等参照）、その１m3当たり表面積が５
０m2／m3以上、特に５２m2／m3以上で、１m3当たり空間
率が８０％以上、特に９５％以上の合成樹脂製一体成型
物（例えば、東洋ゴム工業株式会社製、商品名「トーヨ
ーハイレックス」および「トーヨーバイオハイレック
ス」等）は、濾過に伴う目詰まりが少なく、水との接触
面積が広く、かつ軽くて取扱い易い点で特に好ましい。As the contact filter medium, fillers such as Raschig rings, sash rings, Berl saddles, interlock saddles, terralette packings, and pole rings used for contacting gas and liquid of the absorber can be used. It is composed of the described contact filter medium, that is, a saddle-shaped flap, and a plurality of hollow cylinders and blades protruding from both sides of the saddle-shaped flap (Japanese Patent Publication Nos. 47-41225 and 63-21317). And JP-A-8-1
The surface area per 1 m 3 is 5
0 m 2 / m 3 or more, in particular, 52 m 2 / m 3 or more, and a space ratio per m 3 of 80% or more, particularly 95% or more. Toyo Hi-Rex ”and“ Toyo Bio Hi-Rex ”are particularly preferred because they are less clogged by filtration, have a large contact area with water, are light and easy to handle.
【０００７】そして、上記の接触濾材は、底が格子やす
のこ状のグリッドで形成された箱形の容器にその多数個
を充填し、その最上層に接触濾材の浮上を防止するため
にグリッド状の押さえ板を重ねることにより、接触濾材
槽に形成される。なお、上記の押さえ板は、接触濾材が
比重の小さいプラスチック製の場合に用いられる。The above-mentioned contact filter medium is filled with a large number of box-shaped containers each having a grid or saw-like grid at the bottom, and a grid-like container is formed on the top layer to prevent the contact filter medium from floating. Are formed in the contact filter medium tank by stacking the holding plates. The above-mentioned holding plate is used when the contact filter medium is made of plastic having a small specific gravity.
【０００８】この発明に係る低濃度汚染水の浄化装置を
河川敷等に埋設し、河川の上流側から汚染水を適当な水
路で、またはポンプで汲み上げて上記の導入樋に導く
と、導入樋の水位の上昇により、汚染水が上流側の浄化
槽に溢流により流入し、その際に空気中の酸素を取り込
んで水中の溶存酸素を増加させる。そして、浄化槽内の
水位の上昇に伴って底部にＳＳの一部が沈澱、堆積し、
接触濾材槽の下面に達した汚染水は、接触濾材槽を上向
きに流れ、その際に濾過が行われてＳＳの一部が更に沈
澱、堆積し、かつ汚染水が接触濾材の表面に接触し、該
表面に自然発生により付着している微生物膜の作用で酸
化・分解される。そして、上記の接触濾材槽を通過した
後、隣接する低水位側浄化槽に溢流により、流入する。
以下、これを繰り返して上記の汚染水が低水位側の浄化
槽に順に流入し、その間に浄化され、最低水位の浄化槽
から溢流により導出樋に排出され、その溢流の際に空気
中の酸素を取り込むことにより酸素補給を受け、この導
出樋に接続された任意の水路によって元の河川等に放流
される。When the apparatus for purifying low-concentration contaminated water according to the present invention is buried in a riverbed or the like, and contaminated water is pumped up from an upstream side of the river through an appropriate channel or by a pump, the contaminated water is guided to the above-mentioned introduction gutter. Due to the rise in the water level, the contaminated water flows into the upstream septic tank by overflow, and at that time, the oxygen in the air is taken in and the dissolved oxygen in the water is increased. Then, as the water level in the septic tank rises, part of the SS precipitates and accumulates at the bottom,
The contaminated water that has reached the lower surface of the contact filter medium tank flows upward through the contact filter medium tank, at which time filtration is performed, and a portion of the SS further precipitates and deposits, and the contaminated water contacts the surface of the contact filter medium. It is oxidized and decomposed by the action of a microbial membrane naturally adhering to the surface. Then, after passing through the above-mentioned contact filter medium tank, it flows into an adjacent low water level side purification tank by overflow.
Hereinafter, by repeating this, the above-mentioned contaminated water sequentially flows into the septic tank on the low water level side, is purified during that time, is discharged from the septic tank at the lowest water level to the discharge gutter by overflow, and the oxygen in the air at the time of the overflow. The oxygen is replenished by taking in the water, and is discharged to the original river or the like through an arbitrary water channel connected to the outlet gutter.
【０００９】この発明では、河川水等の汚染水が導入樋
と最高水位の浄化槽との間、隣接する浄化槽の相互間お
よび最低水位の浄化槽と導出樋との間で溢流によって移
動し、その際に溶存酸素が補給されるため、運転中の曝
気が不要になる。また、各浄化槽の接触濾材槽を汚染水
が下から上向きに流れるので、汚染水が接触濾材槽を均
一に分散して流れ、接触濾材表面の微生物膜に対する汚
染水の接触効率が向上する。なお、溢流部分に複数個の
Ｖ溝を設け、このＶ溝を通して溢流させることにより、
溢流の偏りが消失し、上記接触濾材槽を通る水流が一層
均一になる。また、溢流を隣接する低水位の浄化槽側の
一方だけでなく、左右の両側を含む三方で行わせて樋で
受け、しかるのち低水位側浄化槽に流入させることによ
り、空気中酸素の取り込みが増大し、かつ上記接触濾材
槽内の水流が更に均一になり、微生物膜との接触効率が
更に向上する。According to the present invention, contaminated water such as river water flows by overflow between the inlet gutter and the highest-level septic tank, between adjacent septic tanks, and between the lowest-level septic tank and the outlet gutter. Since dissolved oxygen is supplied at this time, aeration during operation becomes unnecessary. In addition, since the contaminated water flows upward from below in the contact filter medium tank of each of the purification tanks, the contaminated water uniformly disperses and flows in the contact filter medium tank, and the contact efficiency of the contaminated water with the microbial membrane on the surface of the contact filter medium is improved. In addition, by providing a plurality of V-grooves in the overflow portion and overflowing through the V-grooves,
The bias of the overflow is eliminated, and the water flow through the contact filter medium tank becomes more uniform. In addition, the overflow is performed not only on one of the adjacent low-water-level septic tanks, but also on three sides including the left and right sides, and is received by a gutter. The water flow in the contact filter medium tank becomes more uniform, and the contact efficiency with the microorganism membrane is further improved.
【００１０】そして、接触濾材槽が浄化槽の底面上方に
設けられるので、この底面上に汚染水中のＳＳが容易に
沈澱、堆積し、かつ沈澱層内の有機成分の自己消化が生
じ易く、その自己消化によってＳＳ堆積量が減少するた
め、溢流の際に酸素補給が行われることとあいまち、空
気パイプ等を用いた空気吹込みによる曝気がほとんど不
要になり、また堆積したＳＳを水中型スラリーポンプ等
で除去することも容易であり、その除去作業の回数も減
少する。[0010] Since the contact filter medium tank is provided above the bottom of the septic tank, SS in the contaminated water easily precipitates and deposits on this bottom, and the organic components in the sediment layer are easily self-digested. Since the amount of SS accumulated by digestion is reduced, oxygen supplementation is performed at the time of overflow, so that aeration by air blowing using an air pipe etc. is almost unnecessary, and the accumulated SS is submerged slurry pump. Etc., and the number of removal operations is also reduced.
【００１１】上記の浄化槽は、その複数個が総て等しい
容量である必要はなく、流量が互いにバランスするもの
であればよい。そして、複数個の浄化槽をそれぞれ独立
した形で作ることができ、また請求項３に記載のごと
く、１個の大型水槽を該大型水槽と一体に形成された複
数個の隔壁で仕切ることにより、複数個の浄化槽を作る
こともでき、この場合は複数個の浄化槽をそれぞれ独立
した形で設置する場合に比べ、各浄化槽の水位の設定が
容易であり、かつ設置面積を狭くできる。また、浄化槽
に設置する接触濾材槽は１個に限るものではなく、一部
の浄化槽には２個を直列に設置してもよい。ただし、こ
の場合は、上流側および下流側の２個の接触濾材槽間に
上部を離隔する堰板を介在させて下側のみを連通させ、
上流側の接触濾材槽にその上流側で隣接する浄化槽から
汚染水を溢流させて該上流側の接触濾材槽を流下させ、
次いで上記２個中の下流側接触濾材槽を上昇させるのが
好ましい。It is not necessary that all of the above-mentioned septic tanks have the same capacity. And a plurality of septic tanks can be made in an independent form, respectively, and as described in claim 3, by dividing one large water tank by a plurality of partition walls integrally formed with the large water tank, A plurality of septic tanks can also be made. In this case, the water level of each septic tank can be easily set and the installation area can be reduced as compared with a case where a plurality of septic tanks are installed independently. Further, the number of contact filter medium tanks installed in the septic tank is not limited to one, and two of them may be arranged in series in some of the septic tanks. However, in this case, only the lower side is communicated by interposing a weir plate separating the upper part between the two contact filter media tanks on the upstream side and the downstream side,
Overflowing the contaminated water from the purification tank adjacent to the upstream contact filter medium tank on the upstream side to cause the upstream contact filter medium tank to flow down,
Next, it is preferable to raise the downstream contact filter medium tank in the two.
【００１２】また、請求項４に記載のごとく、複数個の
浄化槽を、これら複数個の浄化槽の配列長さとほぼ等し
い長さの大型水槽に複数個の浄化ユニット（ただし、浄
化ユニットは、上記の大型水槽を仕切って浄化槽を形成
する仕切り板と、該仕切り板の片側上部に固定された接
触濾材槽と、上記仕切り板の片側下端に固定された汚泥
受けとで構成される。）を着脱自在に設置することによ
り形成することができ、この場合は大型水槽の形状や構
造が単純化される一方、浄化ユニットを鋼材やＦＲＰで
作ることが可能になり、製作が容易になって製造コスト
が低下し、かつ汚泥受けや接触濾材が汚れたときは、浄
化ユニットを大型水槽から取出して汚泥受けから堆積汚
泥を取り除き、接触濾材槽から接触濾材を取出して洗浄
することができ、汚泥の引抜き用パイプやポンプが不要
になる。According to a fourth aspect of the present invention, a plurality of purification tanks are provided in a large water tank having a length substantially equal to the arrangement length of the plurality of purification tanks. A partition plate for partitioning a large water tank to form a septic tank, a contact filter medium tank fixed to an upper portion on one side of the partition plate, and a sludge receiver fixed to a lower end on one side of the partition plate are detachably attached. In this case, while the shape and structure of the large water tank are simplified, the purification unit can be made of steel or FRP, and the production becomes easy and the production cost is reduced. When the water level decreases and the sludge receiver and contact filter media become dirty, the purification unit can be removed from the large water tank to remove accumulated sludge from the sludge receiver, and the contact filter media can be removed from the contact filter media tank and washed. Pull-out for the pipes and pump of the mud is not required.
【００１３】[0013]
実施形態１ 図１において、１０はコンクリート製の大型水槽であ
り、前壁１１、後壁１２および側壁１３によって前後
（図１の左右方向）に長い直方体の箱形に作られてい
る。この水槽１０の内側は、幅方向の第１隔壁１４およ
び第２隔壁１５によって前後に並ぶ３槽に仕切られ、前
壁１１と第１隔壁１４との間に第１浄化槽１６が、第１
隔壁１４と第２隔壁１５との間に第２浄化槽１７が、ま
た第２隔壁１５と後壁１２との間に第３浄化槽１８がそ
れぞれ形成される。ただし、第１浄化槽１６および第３
浄化槽１８は、ほぼ等しい長さに形成され、第２浄化槽
１７は第１浄化槽１６の２倍に近い長さに形成され、各
槽の底部には上流側（図１左側）で低くなるように傾斜
が付けられ、汚泥が上流側に溜まるようになっている。
そして、上記の前壁１１および後壁１２の上部外面に沿
ってそれぞれ導入樋１９および導出樋２０が幅方向に設
けられている。Embodiment 1 In FIG. 1, reference numeral 10 denotes a large concrete water tank, which is formed by a front wall 11, a rear wall 12, and a side wall 13 into a rectangular parallelepiped box shape which is long in the front-rear direction (the left-right direction in FIG. 1). The inside of the water tank 10 is partitioned into three tanks arranged in front and rear by a first partition 14 and a second partition 15 in the width direction, and a first purification tank 16 is provided between the front wall 11 and the first partition 14.
A second purification tank 17 is formed between the partition wall 14 and the second partition wall 15, and a third purification tank 18 is formed between the second partition wall 15 and the rear wall 12, respectively. However, the first septic tank 16 and the third
The septic tank 18 is formed to have substantially the same length, the second septic tank 17 is formed to have a length almost twice as long as the first septic tank 16, and the bottom of each tank is lower on the upstream side (left side in FIG. 1). Inclined so that sludge accumulates upstream.
An introduction gutter 19 and an extraction gutter 20 are provided in the width direction along the upper outer surfaces of the front wall 11 and the rear wall 12, respectively.
【００１４】上記の前壁１１、第１隔壁１４、第２隔壁
１５および後壁１２は、高さが前壁１１が最も高く、以
下順に低くなって後壁１２が最も低くなるように形成さ
れる。そして、上記の導入樋１９と第１浄化槽１６間、
第１浄化槽１６と第２浄化槽１７間、第２浄化槽１７と
第３浄化槽１８間および第３浄化槽１８と導出樋２０間
の各水位の差（落差）が５〜２０cmとなるように、上記
前壁１１の上縁には導入樋１９と第１浄化槽１６とを連
通させる複数個のＶ溝１１ａが、また第１隔壁１４の上
縁には第１浄化槽１６と第２浄化槽１７とを連通させる
複数個のＶ溝１４ａが、また第２隔壁１５の上縁には第
２浄化槽１７と第３浄化槽１８とを連通させる複数個の
Ｖ溝１５ａが、また後壁１２の上縁には第３浄化槽１８
と導出樋２０とを連通させる複数個のＶ溝１２ａがそれ
ぞれ並設される。The front wall 11, the first partition 14, the second partition 15, and the rear wall 12 are formed such that the height of the front wall 11 is the highest, the height of the front wall 11 is reduced in order, and the height of the rear wall 12 is the lowest. You. And, between the above-mentioned introduction gutter 19 and the first septic tank 16,
The water level difference (head) between the first septic tank 16 and the second septic tank 17, between the second septic tank 17 and the third septic tank 18, and between the third septic tank 18 and the discharge gutter 20 is set to 5 cm to 20 cm. The upper edge of the wall 11 is provided with a plurality of V-grooves 11 a for communicating the introduction gutter 19 and the first septic tank 16, and the upper edge of the first partition 14 is connected to the first and second septic tanks 16 and 17. A plurality of V-grooves 14a, a plurality of V-grooves 15a at the upper edge of the second partition wall 15 for communicating the second septic tank 17 and the third septic tank 18 and a third V-groove at the upper edge of the rear wall 12 are provided. Septic tank 18
A plurality of V-grooves 12a are provided in parallel with each other and communicate with the outlet gutter 20.
【００１５】上記第１浄化槽１６の前部寄りに第１浄化
槽１６の上半部を前後に仕切る第１堰板２１ａが設けら
れ、この堰板２１ａの下端と第１隔壁１４との間に第１
グリッド２２ａが水平に固定され、この第１グリッド２
２ａの上方に後記する接触濾材３０が充填されて第１接
触濾材槽２３が形成される。また、第２浄化槽１７の中
央部に第２浄化槽１７の上半部を前後に仕切る第２堰板
２１ｂが設けられ、この堰板２１ｂの下端の前側に第２
グリッド２２ｂが、また後側に第３グリッド２２ｃがそ
れぞれ水平に固定され、これら第２グリッド２２ｂおよ
び第３グリッド２２ｃの各上方に上記の接触濾材３０が
充填されて第２グリッド２２ｂの上方に第２接触濾材槽
２４が、また第３グリッド２２ｃの上方に第３接触濾材
槽２５がそれぞれ形成される。更に、第３浄化槽１８の
前部寄りに第３浄化槽１８の上半部を前後に仕切る第３
堰板２１ｃが設けられ、この堰板２１ｃの下端と後壁１
２との間に第４グリッド２２ｄが水平に固定され、この
第４グリッド２２ｄの上方に上記の接触濾材３０が充填
されて第４接触濾材槽２６が形成される。なお、充填さ
れた接触濾材３０の層の上面には、接触濾材３０の浮上
を防ぐための格子状の押さえ板（図示されていない）が
重ねられる。Near the front of the first septic tank 16, there is provided a first weir plate 21 a for partitioning the upper half of the first septic tank 16 back and forth, between the lower end of the weir plate 21 a and the first partition 14. 1
The grid 22a is fixed horizontally, and the first grid 2a
A first contact filter medium tank 23 is formed by filling a contact filter medium 30 described later above the upper part 2a. A second dam plate 21b is provided at the center of the second septic tank 17 to partition the upper half of the second septic tank 17 back and forth, and the second dam plate 21b is provided in front of the lower end of the dam plate 21b.
The grid 22b and the third grid 22c on the rear side are fixed horizontally, respectively. The contact filter medium 30 is filled above each of the second grid 22b and the third grid 22c, and the third grid 22c is positioned above the second grid 22b. A two-contact filter medium tank 24 is formed, and a third contact filter medium tank 25 is formed above the third grid 22c. Further, a third partitioning the upper half of the third septic tank 18 forward and backward near the front of the third septic tank 18.
A dam 21c is provided, and the lower end of the dam 21c and the rear wall 1 are provided.
The fourth grid 22d is fixed horizontally between the second grid 2 and the contact filter medium 30 is filled above the fourth grid 22d to form a fourth contact filter medium tank 26. Note that a lattice-shaped pressing plate (not shown) for preventing the contact filter medium 30 from floating is superimposed on the upper surface of the layer of the filled contact filter medium 30.
【００１６】上記接触濾材３０の一例が図２に示され
る。この接触濾材３０は、ポリプロピレン等の合成樹脂
からなる成型品であり、その鞍形フラップ３１は、真上
および真下から見て円形に、かつその中心Ｃに対して前
部３１ａおよび後部３１ｂが高くなり、左右の側部３１
ｃ、３１ｄが低くなる鞍形に形成されている。この鞍形
フラップ３１の前部左右および後部左右の合計４箇所に
それぞれ大円孔３２ａ、３２ｂ、３２ｃ、３２ｄが上か
らみて９０度間隔に設けられ、前部左の大円孔３２ａお
よび後部右の大円孔３２ｄの縁からそれぞれ上向きに円
錐台形の筒体３３および３６が突出し、前部右の大円孔
３２ｂおよび後部左の大円孔３２ｃの縁からそれぞれ下
向きに円錐台形の筒体３４および３５が突出し、これら
の筒体３３、３４、３５、３６には、それぞれ複数本の
縦孔３３ａ、３４ａ、３５ａ、３６ａが設けられる。FIG. 2 shows an example of the contact filter medium 30. The contact filter medium 30 is a molded product made of a synthetic resin such as polypropylene. The saddle-shaped flap 31 has a circular shape when viewed from directly above and directly below, and the front part 31a and the rear part 31b are higher than the center C thereof. The left and right sides 31
It is formed in a saddle shape in which c and 31d are lowered. Large circular holes 32a, 32b, 32c, and 32d are provided at 90-degree intervals when viewed from above at a total of four places on the front left and right sides and the rear right and left sides of the saddle flap 31, and the front left large circular hole 32a and the rear right side are provided. Frustoconical cylindrical bodies 33 and 36 project upward from the edges of the large circular hole 32d, respectively, and downwardly frustoconical cylindrical bodies 34 from the edges of the front right large circular hole 32b and the rear left large circular hole 32c, respectively. And 35 protrude, and a plurality of vertical holes 33a, 34a, 35a, 36a are provided in these cylindrical bodies 33, 34, 35, 36, respectively.
【００１７】そして、上側２本の筒体３３、３６が鞍形
フラップ３１の中心Ｃを通る板状の中心翼３７で接続さ
れ、前部左の筒体３３の左後面および後部右の筒体３６
の右前面にそれぞれ支持翼３７ａが突設され、この支持
翼３７ａに縦孔３７ｂが設けられる。また、下側２本の
筒体３４、３５が中心翼３８（図示されていない）で上
記同様に接続され、前部右の筒体３４の左前面および後
部左の筒体３５の右後面にそれぞれ支持翼３８ａが突設
され、この支持翼３８ａに縦孔３８ｂが設けられる。な
お、上記鞍形フラップ３１の前後左右の上記支持翼３７
ａ、３８ａが接する部分には小円孔３２ｅが設けられ、
前記の大円孔３２ａ〜３２ｄおよび縦孔３３ａ〜３６
ａ、３７ｂ、３８ｂと共に、汚染水が一箇所に滞ること
なく円滑に流れるのを可能にしている。The upper two cylinders 33, 36 are connected by a plate-like central wing 37 passing through the center C of the saddle-shaped flap 31, and the left rear surface of the front left cylinder 33 and the rear right cylinder are formed. 36
Each of the supporting wings 37a is provided on the right front surface thereof, and a vertical hole 37b is provided in the supporting wing 37a. Further, the lower two cylinders 34, 35 are connected in the same manner by the center wing 38 (not shown), and are connected to the left front surface of the front right cylinder 34 and the right rear surface of the rear left cylinder 35. Each of the support wings 38a protrudes, and a vertical hole 38b is provided in the support wing 38a. In addition, the support wings 37 on the front, rear, left and right of the saddle flap 31
a, a small hole 32e is provided in a portion where 38a contacts,
The large holes 32a to 32d and the vertical holes 33a to 36
Together with a, 37b, and 38b, the contaminated water can flow smoothly without being stuck in one place.
【００１８】上記図２の接触濾材３０は、気液接触型吸
収装置の充填塔用の充填物として用いられ、特公昭４７
−４１２２５号公報等によって公知のものであるが、実
公昭６３−２１３１７号公報に記載のように、上記支持
翼３７ａ、３８ａの先端部に上記の筒体３３〜３６より
も小径の筒体を設けたり、また特開平８−１５５４７８
号公報に記載のように、上記中心翼３７の両面に補助翼
を突設し、上記大径の筒体３３〜３６の回りの支持翼３
７ａ、３８ａの枚数を増加したりして、接触濾材３０の
表面積および空間率を増大することができる。The contact filter medium 30 shown in FIG. 2 is used as a packing material for a packed tower of a gas-liquid contact type absorption device.
As disclosed in Japanese Utility Model Publication No. 63-21317, a cylinder having a smaller diameter than the cylinders 33 to 36 is provided at the tip of the support wings 37a and 38a. And Japanese Patent Application Laid-Open No. 8-155478.
As described in Japanese Patent Application Laid-Open Publication No. H10-260, auxiliary wings are protrudingly provided on both surfaces of the center wing 37, and support wings 3 around the large-diameter cylindrical bodies 33 to 36 are provided.
The surface area and the porosity of the contact filter medium 30 can be increased by increasing the number of 7a and 38a.
【００１９】前記図１の大型水槽１０は、河川敷に埋設
され、上記の導入樋１９に河川の上流側が適当な水路で
接続され、導出樋２０に上記河川の下流側が適当な水路
で接続される。上記の導入樋１９に河川の汚染水Ｗが導
入され、導入樋１９の水位が上昇すると、導入樋１９の
汚染水Ｗが前壁１１のＶ溝１１ａから溢流し、その際に
空気中の酸素を取り込み、大型水槽１０の前壁１１と第
１堰板２１ａとの間を通って第１浄化槽１６に流入し、
これによって第１浄化槽１６の水位が上昇すると、その
汚染水Ｗが第１接触濾材槽２３を下から上向きに流れ、
その際に汚染水Ｗが濾過され、懸濁物の一部が第１浄化
槽１６の底部に沈澱して第１沈澱層Ｄaを形成すると共
に、汚染水Ｗ中の有機性汚濁物質が第１接触濾材槽２３
内の接触濾材３０表面に形成されている微生物膜に接し
て分解される。そして、第１浄化槽１６の水位が上昇し
て第１隔壁１４のＶ溝１４ａに達すると、第１浄化槽１
６の汚染水Ｗが第１隔壁１４を溢流して第２浄化槽１７
に流入し、その際に空気中の酸素を取り込み、かつＶ溝
１４ａを通ることにより、流れが一部に偏ることなく均
一化される。The large water tank 10 shown in FIG. 1 is buried in the riverbed, and the upstream side of the river is connected to the above-mentioned introduction gutter 19 by an appropriate channel, and the downstream side of the above-mentioned river is connected to the outlet gutter 20 by an appropriate channel. . When the contaminated water W of the river is introduced into the introduction gutter 19 and the water level of the introduction gutter 19 rises, the contaminated water W of the introduction gutter 19 overflows from the V-groove 11a of the front wall 11, and the oxygen in the air And flows into the first septic tank 16 through between the front wall 11 of the large water tank 10 and the first dam plate 21a,
As a result, when the water level of the first septic tank 16 rises, the contaminated water W flows upward from below in the first contact filter medium tank 23,
At this time, the contaminated water W is filtered, and a part of the suspension precipitates on the bottom of the first septic tank 16 to form a first sedimentation layer Da. Filter media tank 23
It is decomposed in contact with the microbial membrane formed on the surface of the contact filter medium 30 inside. When the water level of the first septic tank 16 rises and reaches the V groove 14a of the first partition 14, the first septic tank 1
6 contaminated water W overflows the first partition 14 and the second septic tank 17
At that time, the oxygen in the air is taken in, and the air flows through the V-groove 14a.
【００２０】第２浄化槽１７に流入した汚染水Ｗは、第
２接触濾材槽２４を下向きに通って第２浄化槽１７の底
部に達し、水位の上昇に伴って第３接触濾材槽２５を上
向きに通過し、懸濁物の一部が第２浄化槽１７の底部に
沈澱して第２沈澱層Ｄb を形成すると共に、汚染水Ｗ中
の有機性汚濁物質が第２接触濾材槽２４および第３接触
濾材槽２５の接触濾材３０表面に形成されている微生物
膜に接して分解される。そして、第２浄化槽１７の水位
が上昇して第２隔壁１５のＶ溝１５ａに達すると、第２
浄化槽１７の汚染水Ｗが第２隔壁１５を溢流して第３浄
化槽１８に流入する。このとき、溢流する汚染水Ｗが空
気中の酸素を取り込み、かつＶ溝１５ａを通ることによ
り、流れが一部に偏ることなく均一化される。The contaminated water W that has flowed into the second purification tank 17 passes through the second contact filter medium tank 24 downward and reaches the bottom of the second purification tank 17, and moves upward through the third contact filter medium tank 25 as the water level rises. Part of the suspended matter precipitates at the bottom of the second septic tank 17 to form a second sedimentation layer Db, and the organic pollutants in the contaminated water W are removed by the second contact filter medium tank 24 and the third contact layer. It is decomposed in contact with the microbial membrane formed on the surface of the contact filter medium 30 in the filter medium tank 25. When the water level in the second septic tank 17 rises and reaches the V groove 15a of the second partition 15, the second
The contaminated water W in the septic tank 17 overflows the second partition 15 and flows into the third septic tank 18. At this time, the overflowing contaminated water W takes in oxygen in the air and passes through the V-groove 15a, so that the flow is made uniform without being partially biased.
【００２１】第３浄化槽１８に流入した汚染水Ｗは、第
２隔壁１５と第３堰板２１ｃとの間を通って第３浄化槽
１８の底部に達し、水位の上昇に伴って第４接触濾材槽
２６を上向きに通過し、懸濁物の一部が第３浄化槽１８
の底部に沈澱して第３沈澱層Ｄc を形成すると共に、汚
染水Ｗ中の有機性汚濁物質が第４接触濾材槽２６の接触
濾材３０表面に形成された微生物膜に接して分解され
る。そして、第３浄化槽１８の水位が上昇して後壁１２
のＶ溝１２ａに達すると、第３浄化槽１８の汚染水Ｗが
後壁１２を溢流して導出樋２０に流入する。このとき、
溢流する汚染水Ｗが空気中の酸素を取り込み、かつＶ溝
１２ａを通ることにより、流れが一部に偏ることなく均
一化される。そして、導出樋２０に流入した汚染水Ｗ
は、適当な水路を経て河川に戻される。The contaminated water W flowing into the third septic tank 18 passes between the second partition wall 15 and the third weir plate 21c and reaches the bottom of the third septic tank 18, where the fourth contact filter medium is added as the water level rises. Passing upward through the tank 26, a part of the suspended matter is
To form a third sedimentation layer Dc, and the organic pollutants in the contaminated water W are decomposed in contact with the microbial membrane formed on the surface of the contact filter medium 30 of the fourth contact filter tank 26. Then, the water level of the third septic tank 18 rises and the rear wall 12
, The contaminated water W in the third septic tank 18 overflows the rear wall 12 and flows into the outlet gutter 20. At this time,
The overflowing contaminated water W takes in oxygen in the air and passes through the V-groove 12a, so that the flow is made uniform without being partially biased. Then, the contaminated water W flowing into the outlet gutter 20
Is returned to the river via a suitable channel.
【００２２】この実施形態１では、汚染水Ｗが導入樋１
９から第１浄化槽１６に流入する際、第１浄化槽１６か
ら第２浄化槽１７に流入する際、第２浄化槽１７から第
３浄化槽１８に流入する際および第３浄化槽１８から導
出樋２０に流入する際に、それぞれ槽間の落差に基づい
て溢流が行われ、その際に酸素が補給されるため、運転
中の曝気が不要になり、しかも接触濾材槽２３〜２６に
おける汚染水Ｗの流れが均一になる。また、上記の溢流
がＶ溝１４ａ、１５ａ、１６ａを経て行われるため、溢
流の偏りが消失し、上記の接触濾材槽２３〜２６におけ
る汚染水Ｗの流れが一層均一になる。In the first embodiment, the contaminated water W is
When flowing into the first septic tank 16 from 9, when flowing from the first septic tank 16 to the second septic tank 17, when flowing from the second septic tank 17 to the third septic tank 18, and from the third septic tank 18 to the outlet gutter 20. At this time, overflow is performed based on the heads between the tanks, and oxygen is supplied at that time, so that aeration during operation becomes unnecessary, and the flow of the contaminated water W in the contact filter medium tanks 23 to 26 is reduced. Become uniform. Further, since the overflow is performed via the V-grooves 14a, 15a, and 16a, the bias of the overflow is eliminated, and the flow of the contaminated water W in the contact filter media tanks 23 to 26 becomes more uniform.
【００２３】なお、上記のＶ溝１４ａ、１５ａ、１６ａ
は、第１接触濾材槽２３、第３接触濾材槽２５および第
４接触濾材槽２６の左右両側および後側の合計３方に設
けて３方に溢流させ、上記３方の壁の外側上部に「コ」
の字形に巡らして設けた樋に集めて低水位の浄化槽また
は導出樋２０に流入させることができ、この場合は、溢
流が更に均一に行われ、空気中酸素の取り込みが増大
し、かつ接触濾材槽２３〜２６における流れが一層均一
になる。The above-mentioned V-grooves 14a, 15a, 16a
Are provided on the left and right sides and the rear side of the first contact filter medium tank 23, the third contact filter medium tank 25, and the fourth contact filter medium tank 26 in total, and are allowed to overflow in three directions. To "Ko"
Can be collected in a gutter provided around the shape of a circle and flowed into the low water level septic tank or the outlet gutter 20. In this case, the overflow is performed more uniformly, the uptake of oxygen in the air is increased, and the contact is improved. The flow in the filter medium tanks 23 to 26 becomes more uniform.
【００２４】また、第１接触濾材槽２３、第３接触濾材
槽２５および第４接触濾材槽２６では、これらの接触濾
材槽を汚染水Ｗが上向きに流れるので、汚染水が均一に
分散して流れ、かつ接触濾材３０の表面に付着している
微生物に対する汚染水の接触効率が良好になる。また、
接触濾材槽２３〜２６に図２の接触濾材３０、すなわち
鞍形フラップ３１、筒体３３〜３６、多数の翼３７、３
８、３７ａ、３８ａ等からなる表面積および開口率が大
きい接触濾材３０を充填したので、上記の接触効率が一
層増大し、かつ目詰まりが発生し難い。そして、上記の
接触濾材槽２３〜２６を大型水槽１０の底面から浮かし
て設けたので、接触濾材槽２３〜２６の下方に沈澱層Ｄ
a 〜Ｄc が容易に形成され、これらの沈澱層Ｄa 〜Ｄc
では有機成分の自己消化が行われ、その堆積量が減少す
るため、曝気もほとんど不要で、行うとしてもごく間欠
的でよく、また水中型スラリーポンプ等による除去も容
易であり、回数も減少する。In the first contact filter tank 23, the third contact filter tank 25, and the fourth contact filter tank 26, the contaminated water W flows upward through these contact filter tanks. The contact efficiency of the contaminated water with respect to the microorganisms flowing and adhering to the surface of the contact filter medium 30 is improved. Also,
In the contact filter medium tanks 23 to 26, the contact filter medium 30 of FIG. 2, that is, the saddle flap 31, the cylindrical bodies 33 to 36, the large number of blades 37, 3
Since the contact filter medium 30 composed of 8, 37a, 38a or the like and having a large surface area and a large opening ratio is filled, the above-described contact efficiency is further increased, and clogging hardly occurs. Since the contact filter media tanks 23 to 26 are provided so as to float from the bottom of the large water tank 10, the sedimentation layer D is provided below the contact filter media tanks 23 to 26.
a to Dc are easily formed, and these precipitation layers Da to Dc
In this case, the organic components are self-digested, and the amount of the accumulated components is reduced, so that aeration is almost unnecessary, even if it is performed, it may be very intermittent, and it can be easily removed by a submersible slurry pump or the like, and the number of times is reduced. .
【００２５】上記実施形態１の浄化装置を下記表１の仕
様で製作し、低濃度の汚染水Ｗ（平均温度１６℃）を１
日当たり８６．４m3の処理速度で、かつ曝気無しで３６
０日間連続処理し、処理の前後のＢＯＤおよびＳＳを比
較し、結果を平均値で表２に示した。ただし、第１浄化
槽１６の溢流用Ｖ溝１４ａ、第２浄化槽１７の溢流用Ｖ
溝１５ａおよび第３浄化槽１８の溢流用Ｖ溝１２ａは、
それぞれ第１接触濾材槽２３、第３接触濾材槽２５およ
び第４接触濾材槽２６の左右両側および後側の３方に設
けて溢流を３方に行わせ、樋に集めて低水位側に送るよ
うにした。また、接触濾材には、図２の接触濾材３０に
翼を付加した形の東洋ゴム工業株式会社製、「トーヨー
バイオハイレックスＢＨ−１００」および「トーヨーバ
イオハイレックスＢＨ−１５０」を使用した。なお、表
１の第２浄化槽の欄に示した接触濾材槽容積は、第２接
触濾材槽および第３接触濾材槽の容積である。また、接
触濾材の直径は、鞍形フラップ３１を円形に投影したと
きの直径であり、高さは上記の投影方向に直角に投影し
た中心翼３７、３８の端部間距離である。The purifying apparatus of the first embodiment is manufactured according to the specifications shown in Table 1 below, and low-concentration contaminated water W (average temperature 16 ° C.)
86.4 m 3 per day processing speed and 36 without aeration
After continuous treatment for 0 days, BOD and SS before and after the treatment were compared, and the results are shown in Table 2 as average values. However, the overflow V groove 14a of the first septic tank 16 and the overflow V groove of the second septic tank 17
The groove 15a and the overflow V groove 12a of the third septic tank 18 are:
The first contact filter medium tank 23, the third contact filter medium tank 25, and the fourth contact filter medium tank 26 are provided on the left and right sides and on the rear side, respectively, to allow overflow in three directions. I sent it. As the contact filter medium, "Toyo Bio Hilex BH-100" and "Toyo Bio Hirex BH-150" manufactured by Toyo Tire & Rubber Co., Ltd., each having a blade added to the contact filter medium 30 in FIG. 2, were used. The contact filter medium tank volume shown in the column of the second purification tank in Table 1 is the capacity of the second contact filter medium tank and the third contact filter medium tank. The diameter of the contact filter medium is the diameter when the saddle flap 31 is projected in a circular shape, and the height is the distance between the ends of the center wings 37 and 38 projected perpendicularly to the above-mentioned projection direction.
【００２６】 表 １ 第１浄化槽 第２浄化槽 第３浄化槽 内法長さ（ｍ） 1.7 2.4 1.4 内法幅 （ｍ） 1.0 1.0 1.0 深さ （ｍ） 1.7 1.6 1.3 容積 （m3） 2.9 3.8 1.8 接触濾材槽容積（m3） 1.33 1.33／1.33 1.02 接触濾材の種類 BH-150 BH-100 BH-100 〃 直径 （mm） 156 95 95 〃 高さ （mm） 128.5 78 78 〃 表面積（m2／ m3 ） 52 75 75 〃 空間率（％） 95 95 95 滞留時間（ｈ） 0.35 0.7 0.27Table 1 First septic tank Second septic tank Third septic tank Inner length (m) 1.7 2.4 1.4 Inner width (m) 1.0 1.0 1.0 Depth (m) 1.7 1.6 1.3 Volume (m 3 ) 2.9 3.8 1.8 Contact Filter media tank volume (m 3 ) 1.33 1.33 / 1.33 1.02 Types of contact media BH-150 BH-100 BH-100 直径 Diameter (mm) 156 95 95 〃 Height (mm) 128.5 78 78 表面積 Surface area (m 2 / m 3 ) 52 75 75 〃 Space ratio (%) 95 95 95 Residence time (h) 0.35 0.7 0.27
【００２７】 表 ２ 処理前 処理後 ＢＯＤ（ppm ） 8.3 4.6 ＳＳ （ppm ） 11.2 4.0 Table 2 Before treatment After treatment BOD (ppm) 8.3 4.6 SS (ppm) 11.2 4.0
【００２８】実施形態２ 図３に示すように、前後（図３の左右方向）に長い大型
水槽４０の内側に４個の浄化ユニット５０Ａ、５０Ｂ、
５０Ｃおよび５０Ｄを直列に配置して低濃度汚染水の浄
化装置とする。大型水槽４０の前壁４１および後壁４２
には、それぞれ前記の実施形態１と同様に溢流用のＶ溝
４１ａおよび４２ａが形成され、その外側に導入樋４５
および導出樋４６が設けられる。ただし、大型水槽４０
の側壁４３および底板４４は、両者共、内面が平坦に形
成される。Embodiment 2 As shown in FIG. 3, four purification units 50A, 50B,
50C and 50D are arranged in series to make a low-concentration contaminated water purification device. Front wall 41 and rear wall 42 of large water tank 40
In the same manner as in the first embodiment, overflow V-grooves 41a and 42a are formed.
And an outlet gutter 46 are provided. However, large water tank 40
The inner surface of both the side wall 43 and the bottom plate 44 is formed flat.
【００２９】上記の浄化ユニット５０Ａ、５０Ｂ、５０
Ｃおよび５０Ｄは、それぞれ上記の大型水槽４０を前後
に仕切ることができる仕切り板５１Ａ、５１Ｂ、５１Ｃ
および５１Ｄを備えており、前端に位置する第１浄化ユ
ニット５０Ａの仕切り板５１Ａ、２番目に位置する第２
浄化ユニット５０Ｂの仕切り板５１Ｂおよび３番目に位
置する第３浄化ユニット５０Ｃの仕切り板５１Ｃによっ
て第１浄化槽４７Ａ、第２浄化槽４７Ｂ、第３浄化槽４
７Ｃおよび第４浄化槽４７Ｄが形成され、後端に位置す
る第４浄化ユニット５０Ｄの仕切り板５１Ｄは大型水槽
４０の後壁４２に接する。The above purification units 50A, 50B, 50
C and 50D are partition plates 51A, 51B, and 51C that can partition the large water tank 40 back and forth, respectively.
And 51D, a partition plate 51A of the first purification unit 50A located at the front end, and a second plate located at the second position.
The first purification tank 47A, the second purification tank 47B, and the third purification tank 4 are separated by the partition plate 51B of the purification unit 50B and the partition plate 51C of the third purification unit 50C located third.
7C and the fourth purification tank 47D are formed, and the partition plate 51D of the fourth purification unit 50D located at the rear end contacts the rear wall 42 of the large water tank 40.
【００３０】上記の第１浄化ユニット５０Ａは、図４に
示すように、Ｊ字ボックスの形に形成される。すなわ
ち、上記の仕切り板５１Ａと、該仕切り板５１Ａの前面
左右に固定された一対のＪ字側板５２Ａと、このＪ字側
板５２Ａの鉛直部前端を接続する上部前板５３Ａと、上
記一対のＪ字側板５２Ａの水平部先端を接続する下部前
板５４Ａと、上記の仕切り板５１Ａ、Ｊ字側板５２Ａ、
下部前板５４Ａの下端を接続する底板５５Ａと、上記の
仕切り板５１Ａ、Ｊ字側板５２Ａの鉛直部および上部前
板５３Ａで形成される角筒部の下部に嵌め込まれたグリ
ッド５６ＡとからなるＪ字ボックスのグリッド５６Ａ上
に前記の接触濾材３０（図示されていない）を充填して
形成される。そして、上記接触濾材３０の充填部が接触
濾材槽５７Ａを、また底板５５Ａを含む皿形部分が汚泥
受け５８Ａをそれぞれ構成する。なお、仕切り板５１Ａ
の上縁には、複数個の溢流用Ｖ溝が並設される。The first purification unit 50A is formed in the shape of a J-shaped box as shown in FIG. That is, the above-mentioned partition plate 51A, a pair of J-shaped side plates 52A fixed to the front left and right sides of the partition plate 51A, an upper front plate 53A connecting the vertical front ends of the J-shaped side plates 52A, and the pair of J A lower front plate 54A that connects the horizontal portion tip of the V-shaped side plate 52A, the partition plate 51A, the J-shaped side plate 52A,
A bottom plate 55A connecting the lower end of the lower front plate 54A, and a grid 56A fitted to the lower part of the rectangular tube portion formed by the partition plate 51A, the vertical portion of the J-shaped side plate 52A and the upper front plate 53A. It is formed by filling the contact filter medium 30 (not shown) on the grid 56A of the character box. The filling portion of the contact filter medium 30 constitutes the contact filter medium tank 57A, and the dish-shaped portion including the bottom plate 55A constitutes the sludge receiver 58A. In addition, the partition plate 51A
A plurality of overflow V-grooves are provided side by side at the upper edge.
【００３１】図３に示した第２浄化ユニット５０Ｂ、第
３浄化ユニット５０Ｃおよび第４浄化ユニット５０Ｄの
接触濾材槽５７Ｂ、５７Ｃ、５７Ｄおよび汚泥受け５８
Ｂ、５８Ｃ、５８Ｄは、それぞれ上記第１浄化ユニット
５０Ａの接触濾材槽５７Ａおよび汚泥受け５８Ａとほぼ
同様に形成される。ただし、第１浄化槽４７Ａ、第２浄
化槽４７Ｂ、第３浄化槽４７Ｃおよび第４浄化槽４７Ｄ
の水位が５〜２０cmずつ階段状に低下するように、仕切
り板５１Ｂ、５１Ｃ、５１Ｄ上のＶ溝および接触濾材槽
５７Ｂ、５７Ｃ、５７Ｄの設置高さが第１浄化ユニット
５０Ａよりも低く設定される。The contact filter media tanks 57B, 57C, 57D of the second purification unit 50B, the third purification unit 50C, and the fourth purification unit 50D shown in FIG.
B, 58C, and 58D are formed substantially in the same manner as the contact filter medium tank 57A and the sludge receiver 58A of the first purification unit 50A, respectively. However, the first septic tank 47A, the second septic tank 47B, the third septic tank 47C, and the fourth septic tank 47D.
The height of the V-grooves on the partition plates 51B, 51C, and 51D and the contact filter media tanks 57B, 57C, and 57D are set to be lower than that of the first purification unit 50A so that the water level of each of the partition plates 51B, 51C, and 51D decreases stepwise. You.
【００３２】上記の第１〜第４浄化ユニット５０Ａ〜５
０Ｄは、大型水槽４０内に所定の間隔で、かつ仕切り板
５１Ａ〜５１Ｄに対して接触濾材槽５７Ａ〜５７Ｄが上
流側に向くように配列され、上記の大型水槽４０の側壁
４３と第１〜第３浄化ユニット５０Ａ〜５０Ｃ（第４浄
化ユニット５０Ｄを除く）との間にゴムその他のパッキ
ングを詰めて隣接する第１・第２浄化槽４７Ａ・４７Ｂ
間、第２・第３浄化槽４７Ｂ・４７Ｃ間および第３・第
４浄化槽４７Ｃ・４７Ｄ間がそれぞれシールされる。し
たがって、導入樋４５に導入された汚染水Ｗは、第１浄
化槽４７Ａないし第４浄化槽４７Ｄを順に通って浄化さ
れ、しかるのち導出樋４６を経て河川等に放流される
が、この実施形態２では、接触濾材槽５７Ａ、５７Ｂ、
５７Ｃ、５７Ｄの総てにおいて汚染水Ｗが上向きに流れ
る。The first to fourth purifying units 50A to 50A
OD are arranged in the large water tank 40 at predetermined intervals, and the contact filter medium tanks 57A to 57D are directed to the upstream with respect to the partition plates 51A to 51D. First and second purification tanks 47A and 47B adjacent to each other by packing rubber or other packing between third purification units 50A to 50C (excluding fourth purification unit 50D).
Between the second and third septic tanks 47B and 47C and between the third and fourth septic tanks 47C and 47D. Accordingly, the contaminated water W introduced into the introduction gutter 45 is purified in order through the first to fourth purification tanks 47A to 47D, and then discharged to a river or the like via the discharge gutter 46. , Contact filter media tanks 57A, 57B,
Contaminated water W flows upward in all of 57C and 57D.
【００３３】[0033]
【発明の効果】請求項１ないし４に記載された発明によ
れば、河川水等のＢＯＤ２０ppm 以下、ＳＳ３０ppm 以
下の低濃度汚染水をＢＯＤ５ppm 以下、ＳＳ５ppm 以下
に清浄化でき、しかも水に対する酸素補給を洗浄槽間の
溢流によって行うため、運転中の空気吹込みによる曝気
が不要であり、また接触濾材の目詰まりが発生し難く、
更に汚泥の堆積量が自己消化によって減少し易く、その
ため堆積汚泥に対する曝気も不要で、その除去も容易で
あり、ランニングコストが大幅に節約され、更に設置面
積も減少する。According to the invention described in claims 1 to 4, low-concentration contaminated water such as river water or the like having a BOD of 20 ppm or less and SS of 30 ppm or less can be purified to a BOD of 5 ppm or less and an SS of 5 ppm or less, and oxygen supply to the water can be achieved. Since it is performed by overflowing between the washing tanks, aeration by air blowing during operation is not required, and clogging of the contact filter medium hardly occurs.
Further, the amount of sludge accumulated is easily reduced by self-digestion, so that aeration of the accumulated sludge is not required, the sludge is easily removed, the running cost is greatly reduced, and the installation area is further reduced.
【００３４】特に請求項２に記載の発明によれば、接触
濾材の目詰まりが一層減少し、かつ接触濾材表面の微生
物膜に対する汚染水の接触効率が一層向上する。また、
請求項３記載の発明によれば、水位の設定が容易で、か
つ設置面積を狭くできる。また、請求項４に記載の発明
によれば、大型水槽の形状・構造が単純化される一方、
浄化ユニットを鋼材やＦＲＰで作ることが可能になり、
そのため浄化装置全体の製作が容易になり、製造コスト
が低下し、かつ汚泥受けや接触濾材が汚れた際に、浄化
ユニットを大型水槽から取出して洗浄することができ、
汚泥の引抜き用パイプやポンプが不要になる。In particular, according to the second aspect of the present invention, clogging of the contact filter medium is further reduced, and the contact efficiency of the contaminated water with the microbial membrane on the surface of the contact filter medium is further improved. Also,
According to the third aspect of the invention, the water level can be easily set and the installation area can be reduced. According to the invention described in claim 4, while the shape and structure of the large water tank are simplified,
Purification unit can be made of steel or FRP,
Therefore, the entire purification device can be easily manufactured, the production cost can be reduced, and when the sludge receiver or the contact filter medium becomes dirty, the purification unit can be removed from the large water tank and washed.
There is no need for a sludge extraction pipe or pump.
【図１】実施形態１の縦断面図である。FIG. 1 is a longitudinal sectional view of a first embodiment.
【図２】接触濾材の一例を示す斜視図である。FIG. 2 is a perspective view showing an example of a contact filter medium.
【図３】実施形態２の縦断面図である。FIG. 3 is a longitudinal sectional view of the second embodiment.
【図４】浄化ユニットの斜視図である。FIG. 4 is a perspective view of a purification unit.
１０、４０：大型水槽 １１、４１：前壁 １２、４２：後壁 １３、４３：側壁 １４、１５：隔壁 １１ａ、１２ａ、１４ａ、１５ａ：溢流用Ｖ溝 １６〜１８、４７Ａ〜４７Ｄ：浄化槽 １９、４５：導入樋 ２０、４６：導出樋 ２１ａ、２１ｂ、２１ｃ：堰板 ２２ａ、２２ｂ、２２ｃ、２２ｄ：グリッド ２３〜２６、５７Ａ〜５７Ｄ：接触濾材槽 ３０：接触濾材 ３１：鞍形フラップ ３３〜３６：中空筒体 ３７、３８、３７ａ、３８ａ：翼 ５０Ａ〜５０Ｄ：浄化ユニット ５１Ａ〜５１Ｄ：仕切り板 ５８Ａ〜５８Ｄ：汚泥受け Ｗ：汚染水 Ｄa 〜Ｄc ：沈澱層 10, 40: large water tank 11, 41: front wall 12, 42: rear wall 13, 43: side wall 14, 15: partition wall 11a, 12a, 14a, 15a: overflow V-groove 16-18, 47A-47D: septic tank 19 , 45: Introductory gutter 20, 46: Outlet gutter 21a, 21b, 21c: Weir plate 22a, 22b, 22c, 22d: Grid 23-26, 57A-57D: Contact filter medium tank 30: Contact filter medium 31: Saddle flap 33- 36: hollow cylindrical body 37, 38, 37a, 38a: blade 50A to 50D: purification unit 51A to 51D: partition plate 58A to 58D: sludge receiver W: contaminated water Da to Dc: sedimentation layer
───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐藤 哲爾 大阪府大阪市西区江戸堀２丁目17番18号 東洋ゴム工業株式会社内 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Tetsuji Sato 2--17-18 Edobori, Nishi-ku, Osaka-shi, Osaka Inside Toyo Tire & Rubber Co., Ltd.
Claims (4)
の浄化槽から低水位の浄化槽に水が溢流して流入するよ
うに水位の順に配設し、上記の浄化槽に、多数個の接触
濾材が充填された接触濾材槽を、隣接する低水位側浄化
槽に接するように、かつ接触濾材槽の下面が浄化槽の底
から離れ、浄化槽に流入した水が接触濾材槽を下から上
向きに流れて接触濾材槽の上から隣接する低水位側浄化
槽に溢流するように設け、河川や湖沼等の低濃度汚染水
を導入樋を介して最高水位の浄化槽に溢流により流入さ
せ、最低水位の浄化槽内接触濾材槽を通過した水を導出
樋に溢流させ、この導出樋を介して河川や湖沼等に放流
するようにしたことを特徴とする低濃度汚染水の浄化装
置。A plurality of septic tanks having different water levels are arranged in the order of water level such that water overflows from a high water septic tank to a low water septic tank, and a plurality of contact filter media are provided in the septic tank. The contact filter medium tank filled with is contacted with the adjacent low-water-side septic tank, and the lower surface of the contact filter medium tank is separated from the bottom of the septic tank, and the water flowing into the septic tank flows upward from the bottom of the contact filter tank and comes into contact therewith. It is installed so that it overflows from the top of the filter media tank to the adjacent low-water-level septic tank, and allows low-concentration contaminated water, such as rivers and lakes, to flow into the highest-water-level septic tank through the introduction gutter by overflowing. An apparatus for purifying low-concentration contaminated water, wherein water that has passed through a contact filter medium tank overflows into an outlet gutter, and is discharged to rivers, lakes and marshes through this outlet gutter.
ラップの両面に突設された複数個の中空筒体および翼と
からなり、その１m3当たり表面積が５０m2／m3以上、１
m3当たり空間率が８０％以上の合成樹脂製一体成型物で
ある請求項１記載の低濃度汚染水の浄化装置。2. A contact filter medium comprising a saddle-shaped flap, a plurality of hollow cylinders and blades protruding from both sides of the saddle-shaped flap, and a surface area per m 3 of 50 m 2 / m 3 or more.
m 3 lower concentration contaminated water purification apparatus of claim 1 wherein per space ratio is a synthetic resin integrally molded product of 80% or more.
の配列長さに対応する長さの大型水槽に複数個の隔壁を
一体に設けることにより形成された請求項１または２に
記載の低濃度汚染水の浄化装置。3. The low-pressure tank according to claim 1, wherein the plurality of septic tanks are formed by integrally providing a plurality of partition walls in a large water tank having a length corresponding to the arrangement length of the plurality of septic tanks. Concentration water purification equipment.
の配列長さに対応する長さの大型水槽に複数個の浄化ユ
ニット（ただし、浄化ユニットは、上記の大型水槽を仕
切って浄化槽を形成する仕切り板、該仕切り板の片側上
部に固定された接触濾材槽および上記仕切り板の片側下
端に固定された汚泥受けで構成される。）を着脱自在に
設置することにより形成されている請求項１または２に
記載の低濃度汚染水の浄化装置。4. A plurality of septic tanks are arranged in a large water tank having a length corresponding to the arrangement length of the plurality of septic tanks, and a plurality of purification units (however, the purifying unit partitions the large water tank to form a septic tank. A partition plate, a contact filter medium tank fixed to an upper portion on one side of the partition plate, and a sludge receiver fixed to a lower end on one side of the partition plate). 3. The apparatus for purifying low-concentration contaminated water according to 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9065469A JPH10244281A (en) | 1997-03-04 | 1997-03-04 | Device for cleaning contaminated water of low concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9065469A JPH10244281A (en) | 1997-03-04 | 1997-03-04 | Device for cleaning contaminated water of low concentration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10244281A true JPH10244281A (en) | 1998-09-14 |
Family
ID=13288016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9065469A Pending JPH10244281A (en) | 1997-03-04 | 1997-03-04 | Device for cleaning contaminated water of low concentration |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10244281A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012161339A1 (en) * | 2011-05-26 | 2012-11-29 | メタウォーター株式会社 | Sewage treatment system |
| CN103351084A (en) * | 2013-07-29 | 2013-10-16 | 郑州大学 | Multi-stage water quality eco-purification system suitable for shallow narrow mixed water river channel |
| WO2018190006A1 (en) * | 2017-04-13 | 2018-10-18 | 株式会社東芝 | Wastewater treatment device, partition, method for manufacturing wastewater treatment device, and method for changing region in wastewater treatment device |
| CN117342708A (en) * | 2023-12-04 | 2024-01-05 | 上海勘测设计研究院有限公司 | Bioremediation test device for polluted water body |
-
1997
- 1997-03-04 JP JP9065469A patent/JPH10244281A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012161339A1 (en) * | 2011-05-26 | 2012-11-29 | メタウォーター株式会社 | Sewage treatment system |
| JP5676757B2 (en) * | 2011-05-26 | 2015-02-25 | メタウォーター株式会社 | Sewage treatment system |
| US10773981B2 (en) | 2011-05-26 | 2020-09-15 | Metawater Co., Ltd. | Sewage treatment system having a trickling filter with wash unit |
| CN103351084A (en) * | 2013-07-29 | 2013-10-16 | 郑州大学 | Multi-stage water quality eco-purification system suitable for shallow narrow mixed water river channel |
| CN103351084B (en) * | 2013-07-29 | 2014-10-01 | 郑州大学 | Multi-stage water quality eco-purification system suitable for shallow narrow mixed water river channel |
| WO2018190006A1 (en) * | 2017-04-13 | 2018-10-18 | 株式会社東芝 | Wastewater treatment device, partition, method for manufacturing wastewater treatment device, and method for changing region in wastewater treatment device |
| CN117342708A (en) * | 2023-12-04 | 2024-01-05 | 上海勘测设计研究院有限公司 | Bioremediation test device for polluted water body |
| CN117342708B (en) * | 2023-12-04 | 2024-03-01 | 上海勘测设计研究院有限公司 | Bioremediation test device for polluted water body |
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