JPH0790235B2 - Sewage treatment equipment - Google Patents
Sewage treatment equipmentInfo
- Publication number
- JPH0790235B2 JPH0790235B2 JP1088263A JP8826389A JPH0790235B2 JP H0790235 B2 JPH0790235 B2 JP H0790235B2 JP 1088263 A JP1088263 A JP 1088263A JP 8826389 A JP8826389 A JP 8826389A JP H0790235 B2 JPH0790235 B2 JP H0790235B2
- Authority
- JP
- Japan
- Prior art keywords
- sewage
- treatment
- tank
- treatment tank
- wastewater
- 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
- 239000010865 sewage Substances 0.000 title claims description 102
- 238000011282 treatment Methods 0.000 title claims description 80
- 239000002351 wastewater Substances 0.000 claims description 29
- 239000010802 sludge Substances 0.000 claims description 23
- 230000014759 maintenance of location Effects 0.000 claims description 22
- 230000002265 prevention Effects 0.000 claims description 15
- 238000004062 sedimentation Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000006228 supernatant Substances 0.000 claims description 9
- 238000005273 aeration Methods 0.000 claims description 8
- 238000005192 partition Methods 0.000 claims description 7
- 238000004065 wastewater treatment Methods 0.000 claims description 5
- 238000001556 precipitation Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 6
- 230000000717 retained effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000013049 sediment 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
- Activated Sludge Processes (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は汚水処理装置に係り、特に曝気、沈殿、排水処
理を順次繰り返して汚水を処理する汚水処理装置に関す
る。Description: TECHNICAL FIELD The present invention relates to a sewage treatment apparatus, and more particularly to a sewage treatment apparatus that treats sewage by sequentially repeating aeration, precipitation, and wastewater treatment.
従来、工場等から排出される汚水を活性汚泥処理する場
合、汚水は曝気処理、沈殿処理で、沈殿汚泥と上澄水と
に分離され、上澄水は排水処理で排水される。この場
合、沈殿処理や排水処理中に、新たな汚水を流入すると
上澄水が乱流状態になり、分離した上澄水と汚泥とが再
び混合し、また、流入した汚水も上澄水と短絡するとい
う問題がある。従って、汚水を曝気処理中に流入する必
要があるので、汚水の放出時間が限定される。Conventionally, when sewage discharged from a factory or the like is treated with activated sludge, the sewage is separated into sedimented sludge and supernatant water by aeration treatment and sedimentation treatment, and the supernatant water is discharged by drainage treatment. In this case, when new sewage flows in during sedimentation or drainage treatment, the supernatant water becomes turbulent, the separated supernatant water and sludge are mixed again, and the inflow sewage is also short-circuited with the supernatant water. There's a problem. Therefore, the discharge time of sewage is limited because it is necessary to flow the sewage during the aeration process.
そこで、この問題を解決すべく特公昭58−38233号公報
で沈殿処理や排水処理中でも汚水の放出が可能な汚水の
処理方法が開示されている。この処理方法は、処理槽内
に仕切壁を設けて新たに流入槽ゾーンを形成し、仕切壁
の下端部に開口部を設けて流入ゾーンと処理槽とを連通
させた汚水処理装置を使用することを特徴としている。
この汚水処理装置によれば、汚水は流入ゾーンに流入
し、流入ゾーン内の汚水は仕切壁の開口部を介して処理
槽内に流入するので、処理槽内の汚水に乱流が生じな
い。従って、流入した汚水は処理槽内の汚水と短絡しな
いので、曝気、沈殿、排水のいずれの処理中でも、流入
ゾーンに汚水を放出することが出来る。Therefore, in order to solve this problem, Japanese Patent Publication No. 58-38233 discloses a method for treating sewage capable of discharging sewage even during precipitation treatment or wastewater treatment. This treatment method uses a sewage treatment apparatus in which a partition wall is provided in the treatment tank to newly form an inflow tank zone, and an opening is provided at a lower end portion of the partition wall to connect the inflow zone and the treatment tank. It is characterized by that.
According to this sewage treatment apparatus, sewage flows into the inflow zone, and sewage in the inflow zone flows into the treatment tank through the opening of the partition wall, so that no turbulent flow occurs in the sewage in the treatment tank. Therefore, the inflowing sewage does not short-circuit with the sewage in the treatment tank, so that the sewage can be discharged to the inflow zone during any treatment of aeration, precipitation and drainage.
しかしながら、この方法では、流入ゾーンを設置する場
合、反応槽の外に設置することになり、設備が大きくな
る。また、流入ゾーンと処理槽とは仕切壁の開口部のみ
で連通しているので、流入ゾーンの汚水表面に浮遊した
スカムを除去することが出来ないとう問題がある。However, in this method, when the inflow zone is installed, it is installed outside the reaction tank, and the equipment becomes large. Further, since the inflow zone and the treatment tank are communicated with each other only through the opening of the partition wall, there is a problem that the scum floating on the wastewater surface of the inflow zone cannot be removed.
本発明はこのような事情に鑑みてなされたもので、汚水
は流入ゾーンから処理槽にオーバーフローせず、また、
流入ゾーンに浮遊したスカムを除去することが出来る省
スペースの汚水処理装置を提供することを目的とする。The present invention has been made in view of such circumstances, the sewage does not overflow from the inflow zone to the treatment tank,
An object of the present invention is to provide a space-saving sewage treatment apparatus capable of removing scum floating in the inflow zone.
本発明は前記目的を達成するために、処理槽（12、32）
内で曝気、沈殿処理して汚泥と上澄水とに分離し、上澄
水を排水処理する汚水処理装置（10、30）において、処
理槽（12、32）にスカムが含有された汚水を流入する汚
水供給装置に接続され、沈殿汚泥界面（Ａ）の高さより
下方の位置で、処理槽（12、32）内にスカムが含有され
た汚水を流入する開口部（18B、34B）が形成された汚水
流入管（18、34）と、沈殿汚泥界面（Ａ）と開口部（18
B、34B）との間に略水平に設けられ、処理槽（12、32）
の底面（12A、32D）とで汚水滞留領域（24、38）を形成
した乱流防止板（20、36）と、を有したことを特徴とし
ている。In order to achieve the above-mentioned object, the present invention provides a treatment tank (12, 32)
Sewage containing scum flows into the treatment tanks (12, 32) in the sewage treatment equipment (10, 30) that aerates and sediments inside to separate it into sludge and supernatant water, and discharges the supernatant water. An opening (18B, 34B) was formed in the treatment tank (12, 32), which is connected to the wastewater supply device and is below the height of the sedimentation sludge interface (A), for inflowing the wastewater containing scum. Sewage inflow pipe (18, 34), sedimentation sludge interface (A) and opening (18
(B, 34B) and the treatment tank (12, 32)
And a turbulent flow prevention plate (20, 36) having a bottom surface (12A, 32D) and a sewage retention area (24, 38).
本発明によれば、処理槽（12、32）に汚水を流入する汚
水流入管（18、34）の開口部（18B、34B）が沈殿汚泥界
面（Ａ）の高さより下方の位置に形成され、また、乱流
防止板（20、36）が沈殿汚泥界面（Ａ）と開口部（18
B、34B）との間に設けられて処理槽（12、32）の底面
（12A、32D）とで汚水滞留領域（24、38）を形成してる
ので、汚水流入管（18、34）から流入された汚水は汚水
滞留領域（24、38）に一旦滞留してから処理槽（12、3
2）内に流入する。従って、汚水を汚水滞留領域（24、3
8）から処理槽（12、32）内に均等に拡散するので、汚
水が処理槽（12、32）に流入する時に発生する乱流を防
止することが出来る。また、汚水は汚水流入装置から貯
留工程を経ないで汚水流入管（18、34）に導入され、汚
水流入管（18、34）から処理槽（12、32）に流入するの
でスカムが発生せず、また、汚泥で汚水流入管（18、3
4）が閉塞することもない。According to the present invention, the opening (18B, 34B) of the wastewater inflow pipe (18, 34) for flowing the wastewater into the treatment tank (12, 32) is formed at a position lower than the height of the sedimentation sludge interface (A). Moreover, the turbulence prevention plates (20, 36) are connected to the sedimentation sludge interface (A) and the opening (18).
B, 34B) and the bottoms (12A, 32D) of the treatment tanks (12, 32) form a wastewater retention area (24, 38), so that the wastewater inflow pipes (18, 34) The inflowing sewage is temporarily retained in the sewage retention area (24, 38) and then treated in the treatment tank (12, 3).
2) Inflow into. Therefore, the sewage is collected in the sewage retention area (24, 3
Since it is evenly diffused from 8) into the treatment tanks (12, 32), it is possible to prevent turbulent flow generated when wastewater flows into the treatment tanks (12, 32). Also, sewage is introduced from the sewage inflow device to the sewage inflow pipe (18, 34) without passing through the storage process, and flows into the treatment tank (12, 32) from the sewage inflow pipe (18, 34), so scum is not generated. And the sludge inflow pipe (18, 3
4) will not be blocked.
以下添付図面に従って本発明に係る汚水処理装置の好ま
しい実施例を詳説する。Hereinafter, preferred embodiments of a sewage treatment apparatus according to the present invention will be described in detail with reference to the accompanying drawings.
第１図、第２図に示すように、汚水処理装置10は処理槽
12を有し、処理槽12には汚水導入部14が形成されてい
る。汚水の導入部14の受入口14Aは図示しない汚水流入
装置に接続されている。また、導入部14には受入口14A
に隣接してスクリーン16が設けられている。更に、導入
部14とスクリーン16とで形成される排出口14Bには汚水
流入管18の上端開口部18Aが設けられている。汚水流入
管18の下端開口部18Bは処理槽12に設定されている沈殿
汚泥界面Ａの高さ寸法Ｈの1/2以下の寸法H2の位置に設
けられている。尚、この下端開口部18Bは後述する乱流
防止板20より僅かに下方で処理槽12の底面12Aに向けて
開口している。As shown in FIGS. 1 and 2, the sewage treatment apparatus 10 is a treatment tank.
The treatment tank 12 has a sewage inlet 14 formed therein. The inlet 14A of the sewage inlet 14 is connected to a sewage inflow device (not shown). In addition, the entrance 14A in the introduction section 14
A screen 16 is provided adjacent to. Further, an upper end opening 18A of a sewage inflow pipe 18 is provided at a discharge port 14B formed by the introduction part 14 and the screen 16. The lower end opening 18B of the sewage inflow pipe 18 is provided at a position of a dimension H 2 that is 1/2 or less of the height dimension H of the settled sludge interface A set in the treatment tank 12. The lower end opening 18B opens slightly toward a bottom surface 12A of the processing tank 12 below a turbulence prevention plate 20 described later.
また、処理槽12には乱流防止板20が、処理槽12の底面12
Aに平行に配設されている。乱流防止板20の一端20Aは処
理槽12に設けられ、他端20Bは支持部材22で支持されて
いる。乱流防止板20の長さ（Ｌ）、幅（Ｗ）、高さ
（H2）は以下のように設定される。Further, the turbulent flow prevention plate 20 is provided in the processing tank 12 and the bottom surface 12 of the processing tank 12 is
It is arranged parallel to A. One end 20A of the turbulent flow prevention plate 20 is provided in the processing tank 12, and the other end 20B is supported by a support member 22. The length (L), width (W), and height (H 2 ) of the turbulence prevention plate 20 are set as follows.
処理槽12の水深を5mとすると、引抜比が最高1/2なの
で、汚水処理能力の安定性として（−0.5）を考慮する
と、汚泥界面H1は H1＝（2.5−0.5）ｍ＝2m となり、汚泥界面Ａを乱さぬよう H2＝1m と設定する。If the water depth of the treatment tank 12 is 5 m, the maximum extraction ratio is 1/2, so considering the stability of the wastewater treatment capacity (-0.5), the sludge interface H 1 is H 1 = (2.5-0.5) m = 2 m Therefore, set H 2 = 1 m so that the sludge interface A is not disturbed.
また、乱流防止板20の幅Ｗと長さＬとの比は W:L＝（1.5〜２）：（１） であることが望ましく、 Ｌ＝2mとすると、Ｗ＝２×1.5＝3m となる。Further, the ratio of the width W to the length L of the turbulence prevention plate 20 is preferably W: L = (1.5 to 2) :( 1). When L = 2m, W = 2 × 1.5 = 3m Becomes
従って、汚水処理量を400t/日とすると流入汚水量は0.2
8m3/分となり、又、汚水滞留領域24の容積は（Ｗ×Ｌ×
H2）で設定されるので、汚水が汚水滞留領域24内に滞留
する時間は、 （Ｗ×Ｌ×H2）/0.28＝（３×２×１）/0.28＞５（分） となり、汚水滞留領域24内に汚水を５分以上滞留するこ
とが出来る。Therefore, if the treated wastewater amount is 400t / day, the inflow wastewater amount is 0.2
8m 3 / min, and the volume of the wastewater retention area 24 is (W × L ×
H 2 ), the time for the wastewater to stay in the wastewater retention area 24 is (W × L × H 2 ) /0.28= (3 × 2 × 1) /0.28> 5 (minutes). Sewage can be retained in the retention area 24 for 5 minutes or more.
尚、乱流防止板の長さ（Ｌ）、幅（Ｗ）、高さ（H2）は
適宜変えることが出来る。The length (L), width (W), and height (H 2 ) of the turbulence prevention plate can be changed appropriately.
前記の如く構成された本発明に係る汚水処理装置の作用
について説明する。The operation of the sewage treatment apparatus according to the present invention configured as described above will be described.
先ず、図示しない汚水流入装置から汚水導入部14の受入
口14Aに汚水を流入する。受入口14Aに流入した汚水はス
クリーン16を経て排出口14Bに流入する。排出口14Bに流
入した汚水は汚水流入管18を経てその下端開口部18Bか
ら汚水滞留領域24内に流入する。この場合、汚水処理量
を400t/日とすると流入汚水量は0.28m3/分となる。従っ
て、汚水滞留領域24の容積（Ｗ×Ｌ×H2）は6m3の大き
さに設定されているので、流入汚水が汚水滞留領域24内
に滞留する時間は（6/0.28）分となり、流入した汚水を
５分以上汚水滞留領域24内に滞留することが出来る。汚
水滞留領域24内に滞留している汚水は、汚水流入管18を
経て汚水滞留領域24内に流入してくる新たな汚水に押し
出されて処理槽内に流入する。従って、処理槽12内に流
入する汚水は汚水滞留領域24で流速が低下し、また、汚
水滞留領域24から処理槽12内に均等に拡散するので、処
理槽12内の汚水に乱流が生じない。First, sewage is caused to flow into the receiving port 14A of the sewage introduction part 14 from a sewage inflow device (not shown). The sewage that has flowed into the receiving port 14A flows into the discharge port 14B via the screen 16. The sewage flowing into the discharge port 14B flows into the sewage retention area 24 through the sewage inflow pipe 18 through the lower end opening 18B. In this case, if the amount of treated wastewater is 400t / day, the amount of inflowing wastewater will be 0.28m 3 / min. Therefore, since the volume (W × L × H 2 ) of the wastewater retention area 24 is set to a size of 6 m 3 , the inflowing wastewater stays in the wastewater retention area 24 for (6 / 0.28) minutes, The inflowing sewage can be retained in the sewage retention area 24 for 5 minutes or more. The sewage remaining in the sewage retention area 24 is pushed out by new sewage flowing into the sewage retention area 24 through the sewage inflow pipe 18 and flows into the treatment tank. Therefore, the flow velocity of the wastewater flowing into the treatment tank 12 decreases in the wastewater retention area 24, and since the wastewater is uniformly diffused from the wastewater retention area 24 into the treatment tank 12, a turbulent flow occurs in the wastewater in the treatment tank 12. Absent.
前記実施例では、汚水流入管18の下端開口部18Bから処
理槽12の底面12Aに向けて汚水が流入したが、これに限
らず、汚水を処理槽の壁面に向けて流入させてもよい。In the above-described embodiment, the sewage flows from the lower end opening 18B of the sewage inflow pipe 18 toward the bottom surface 12A of the treatment tank 12, but not limited to this, the sewage may flow toward the wall surface of the treatment tank.
以下第３図、第４図を基に、本発明に係る汚水処理装置
の他の実施例について説明する。尚、前記実施例と同一
部材については同一符号を付し説明を省略する。Another embodiment of the sewage treatment apparatus according to the present invention will be described below with reference to FIGS. 3 and 4. The same members as those in the above embodiment are designated by the same reference numerals and the description thereof will be omitted.
汚水処理装置30は処理槽32を有し、処理槽32には仕切壁
32A、32Aで濃縮槽33、33が形成されている。濃縮槽33に
はポンプ33Aが設けられ、仕切壁32Aには開口部32B、32
B、32B、32Bが形成されている。従って、濃縮槽33に沈
殿した汚泥はポンプ33Aで排出されるので汚水の処理能
力が向上する。The wastewater treatment device 30 has a treatment tank 32, and the treatment tank 32 has a partition wall.
The concentration tanks 33, 33 are formed by 32A, 32A. The concentration tank 33 is provided with a pump 33A, and the partition wall 32A has openings 32B and 32A.
B, 32B and 32B are formed. Therefore, the sludge settled in the concentration tank 33 is discharged by the pump 33A, so that the treatment capacity of the wastewater is improved.
また、処理槽32には汚水流入管34が設けられている。汚
水流入管34は第４図に示すように略逆コの字形に形成さ
れ、その上端開口部34Aは排出口14Bに開口し、下端開口
部34Bは処理槽32の壁面32Cに対向して開口している。乱
流防止板36は第３図に示すように略台形状に形成されて
いる。この乱流防止板36は、汚泥界面Ａの高さ法報H2の
1/2以下の高さ寸法H2の位置に、処理槽32の底面32Dと平
行に設けられている。従って、汚水滞留領域38が形成さ
れている。Further, the treatment tank 32 is provided with a wastewater inflow pipe 34. As shown in FIG. 4, the sewage inflow pipe 34 is formed in a substantially inverted U shape, the upper end opening 34A thereof opens to the outlet 14B, and the lower end opening 34B opens to the wall 32C of the processing tank 32. is doing. The turbulent flow prevention plate 36 is formed in a substantially trapezoidal shape as shown in FIG. The turbulence prevention plates 36, the sludge interface A height Oxley H 2
It is provided parallel to the bottom surface 32D of the processing tank 32 at a position with a height dimension H 2 of 1/2 or less. Therefore, the dirty water retention area 38 is formed.
前記の如く構成された本発明に係る汚水処理装置の他の
実施例の作用について説明する。The operation of another embodiment of the sewage treatment apparatus according to the present invention configured as described above will be described.
先ず、前記実施例と同様に図示しない汚水流入装置から
導入管14の受入口14A、スクリーン16、排出口14Bを介し
て汚水流入管34に汚水が導入される。汚水流入管34に導
入された汚水は汚水流入管34を介して下端開口部34Bか
ら処理槽32内に流入する。流入した汚水は処理槽32の壁
面32Aに当たり汚水滞留領域38内に滞留する。次に、新
たな汚水が汚水流入管34を介して流入してくると、汚水
滞留領域38内に滞留している汚水は新たな汚水に押し出
されて汚水滞留領域38から均等に拡散する。従って、前
記実施例と同様に、汚水は処理槽32内に流入しても処理
槽32内の汚水に乱流が生じない。First, similarly to the above-described embodiment, sewage is introduced into the sewage inflow pipe 34 from the sewage inflow device (not shown) through the inlet 14A of the introduction pipe 14, the screen 16 and the outlet 14B. The sewage introduced into the sewage inflow pipe 34 flows into the treatment tank 32 from the lower end opening 34B through the sewage inflow pipe 34. The inflowing sewage hits the wall surface 32A of the treatment tank 32 and stays in the sewage retention area 38. Next, when new sewage flows in through the sewage inflow pipe 34, the sewage remaining in the sewage retention area 38 is pushed out by the new sewage and diffused evenly from the sewage retention area 38. Therefore, as in the case of the above-described embodiment, even if the wastewater flows into the treatment tank 32, no turbulent flow occurs in the wastewater in the treatment tank 32.
尚、処理槽32の曝気処理中に開口部32B…から濃縮槽3
3、33に活性汚泥が流入し、濃縮槽33、33に沈殿した汚
泥はポンプ33A、33Aで濃縮槽33、33から排出されるの
で、汚水の処理能力を向上させることが出来る。During the aeration process of the treatment tank 32, the concentration tank 3 is opened from the opening 32B.
Since the activated sludge flows into 3 and 33 and the sludge settled in the concentration tanks 33 and 33 is discharged from the concentration tanks 33 and 33 by the pumps 33A and 33A, the treatment capacity of the wastewater can be improved.
前記二つの実施例では乱流防止板20、36を処理槽の底面
に平行に設けたが、これに限らず、処理槽の壁面に設け
た一端の高さから他端の高さまで漸減するように乱流防
止板20、36を設けてもよい。Although the turbulent flow prevention plates 20 and 36 are provided in parallel with the bottom surface of the processing tank in the above-mentioned two embodiments, the present invention is not limited to this, and is gradually reduced from the height of one end provided on the wall surface of the processing tank to the height of the other end. The turbulent flow prevention plates 20 and 36 may be provided in the.
以上説明したように、本発明に係る汚水処理装置によれ
ば、汚水流入管の開口部から流入された汚水は汚水滞留
領域に一旦滞留してから処理槽内に流入する。従って、
汚水は流速が低下した状態で汚水滞留領域から均等に処
理槽に流入するので、汚水が処理槽に流入する時に発生
する乱流を防止することが出来る。As described above, according to the sewage treatment apparatus of the present invention, the sewage that has flowed in from the opening of the sewage inflow pipe temporarily stays in the sewage retention area and then flows into the treatment tank. Therefore,
Since the sewage flows into the treatment tank evenly from the sewage retention area in a state where the flow velocity is reduced, it is possible to prevent the turbulent flow generated when the sewage flows into the treatment tank.
また、汚水は汚水流入装置から貯留工程を経ないで汚水
導入管から処理槽に流入するので、スカムが発生しな
い。又、汚水流入管も汚泥で閉塞しないので、汚水は処
理槽にオーバーフローしない。Further, since the sewage flows into the treatment tank from the sewage introduction pipe without passing through the storage step from the sewage inflow device, scum does not occur. Moreover, since the sewage inflow pipe is not blocked by the sludge, the sewage does not overflow into the treatment tank.
この結果、汚水の処理能力を低下させずに、曝気、沈
殿、排水のいずれの処理中でも処理槽に汚水を流入する
ことが出来る。As a result, the sewage can flow into the treatment tank during any of the aeration, sedimentation, and drainage treatments without reducing the sewage treatment capacity.
第１図は本発明に係る汚水処理装置の平面図、第２図は
第１図のＡ−Ａ断面図、第３図は本発明に係る他の実施
例を示す平面図、第４図は第３図のＡ−Ａ断面図であ
る。 10、30……汚水処理装置、12、32……処理槽、12A、32D
……底面、14……導入部、18、34……汚水流入管、18
A、34A……上端開口部、18B、34B……下端開口部、20、
36……乱流防止板、24、38……汚水滞留領域、Ａ……沈
殿汚泥界面。1 is a plan view of a sewage treatment apparatus according to the present invention, FIG. 2 is a sectional view taken along the line AA of FIG. 1, FIG. 3 is a plan view showing another embodiment of the present invention, and FIG. It is an AA sectional view of FIG. 10, 30 …… Sewage treatment equipment, 12,32 …… Treatment tank, 12A, 32D
…… Bottom surface, 14 …… Introduction part, 18, 34 …… Sewage inflow pipe, 18
A, 34A ... upper opening, 18B, 34B ... lower opening, 20,
36: Turbulent flow prevention plate, 24, 38: Sewage retention area, A: Sedimentation sludge interface.
Claims (3)
水とに分離し、上澄水を排水処理する汚水処理装置にお
いて、 処理槽にスカムが含有された汚水を流入する汚水供給装
置に接続され、沈殿汚泥界面の高さより下方の位置で、
処理槽内にスカムが含有された汚水を流入する開口部が
形成された汚水流入管と、 沈殿汚泥界面と開口部との間に略水平に設けられ、処理
槽の底面とで汚水滞留領域を形成した乱流防止板と、 を有したことを特徴とした汚水処理装置。Claim: What is claimed is: 1. A sewage treatment apparatus for aeration and precipitation treatment in a treatment tank to separate sludge and supernatant water, and discharging the supernatant water into a wastewater treatment apparatus, in which wastewater containing scum flows into the treatment tank. Connected to, and at a position below the height of the sedimentation sludge interface,
A sewage inflow pipe with an opening for inflowing sewage containing scum into the treatment tank is installed almost horizontally between the sedimentation sludge interface and the opening, and the bottom of the treatment tank forms a sewage retention area. A sewage treatment device comprising: the formed turbulence prevention plate.
に設けられ、他端が一端の高さ寸法と同一又はそれ以下
の高さ寸法位置に設けられていることを特徴とする請求
項（１）記載の汚水処理装置。2. The turbulent flow prevention plate has one end provided on the inner wall surface of the processing tank and the other end provided at a height dimension position equal to or less than the height dimension of the one end. The sewage treatment apparatus according to claim 1.
槽とを仕切る仕切壁に、曝気処理した汚泥を処理槽から
濃縮槽に流入させる開口部を形成し、濃縮槽の沈殿汚泥
を排出するポンプを濃縮槽に設けたことを特徴とする請
求項（１）記載の汚水処理装置。3. A concentration tank is provided in the treatment tank, and an opening for allowing aeration-treated sludge to flow from the treatment tank into the concentration tank is formed in a partition wall separating the treatment tank and the concentration tank, and the sedimentation sludge of the concentration tank is formed. The sewage treatment apparatus according to claim 1, wherein a pump for discharging the water is provided in the concentration tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1088263A JPH0790235B2 (en) | 1989-04-06 | 1989-04-06 | Sewage treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1088263A JPH0790235B2 (en) | 1989-04-06 | 1989-04-06 | Sewage treatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02265698A JPH02265698A (en) | 1990-10-30 |
| JPH0790235B2 true JPH0790235B2 (en) | 1995-10-04 |
Family
ID=13938000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1088263A Expired - Fee Related JPH0790235B2 (en) | 1989-04-06 | 1989-04-06 | Sewage treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0790235B2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5943240B2 (en) * | 1980-09-22 | 1984-10-20 | 株式会社 西原環境衛生研究所 | Intermittent cycle activated sludge treatment method |
-
1989
- 1989-04-06 JP JP1088263A patent/JPH0790235B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02265698A (en) | 1990-10-30 |
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