JPS627335B2 - - Google Patents
Info
- Publication number
- JPS627335B2 JPS627335B2 JP21839782A JP21839782A JPS627335B2 JP S627335 B2 JPS627335 B2 JP S627335B2 JP 21839782 A JP21839782 A JP 21839782A JP 21839782 A JP21839782 A JP 21839782A JP S627335 B2 JPS627335 B2 JP S627335B2
- Authority
- JP
- Japan
- Prior art keywords
- flow rate
- water
- tank
- discharge
- treated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 53
- 239000007788 liquid Substances 0.000 claims description 33
- 238000000926 separation method Methods 0.000 claims description 24
- 239000007787 solid Substances 0.000 claims description 17
- 239000012141 concentrate Substances 0.000 claims 2
- 239000010865 sewage Substances 0.000 description 18
- 230000007423 decrease Effects 0.000 description 5
- 230000003028 elevating effect Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Landscapes
- Sewage (AREA)
Description
【発明の詳細な説明】
本発明は、合流式下水道における下水などを濃
縮して固液分離を行なう固液分離装置に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a solid-liquid separator for concentrating sewage and the like in a combined sewer system and performing solid-liquid separation.
合流式下水道においては、ポンプ場或いは直接
下水処理場に接続する下水道を設け、汚水を導い
て下水処理を行なうようになつている。晴天時に
は下水のみが導かれ、処理場にて汚濁物質が除か
れて清浄水となつて河川に放流される。雨水の
際、特に急に集中豪雨が発生するような場合のた
めに、ポンプ場や処理場に至る経路の途中に適所
に雨水吐き室を設け、上澄みの比較的清浄な雨水
を少しづつ河川に放流し、残部をポンプ場又は処
理場にまで送るようにしている。 In a combined sewer system, a sewer system is provided that is connected directly to a pump station or a sewage treatment plant, and wastewater is guided for sewage treatment. When the weather is clear, only sewage is channeled, and pollutants are removed at the treatment plant, resulting in clean water that is then discharged into the river. In the event of rainwater, especially when heavy rain suddenly occurs, a rainwater discharge chamber is installed at an appropriate location along the route leading to the pumping station or treatment plant, and the relatively clean supernatant rainwater is gradually released into the river. The water is discharged and the remainder is sent to a pump station or treatment plant.
下水処理場の能力は通常晴天時の下水の流量ｑ
の三倍の3q程度の流量の汚水が処理できるよう
になつている。大雨の場合には下水路に流れる量
はこの3qをはるかに超過するので、上述の如く
超過量を雨水吐き室から越流させて河川に放流し
下水処理場に行く被処理水量を3qに制限する
が、多量の汚濁した越流水が河川に流入し水質汚
濁環境汚染の問題をひき起こす。 The capacity of a sewage treatment plant is usually the flow rate of sewage on a sunny day, q.
It is now possible to treat sewage with a flow rate of about 3q, which is three times the amount of wastewater. In the case of heavy rain, the amount of water that flows into the sewers far exceeds this 3q, so as mentioned above, the excess amount is overflowed from the rainwater outlet and discharged into the river, and the amount of water to be treated that goes to the sewage treatment plant is limited to 3q. However, a large amount of polluted overflow water flows into the river, causing water pollution and environmental pollution problems.
これを防ぐために下水路の途中に越流せきを有
する貯槽を設け、ここから分岐路を以て固液濃縮
分離装置を配備し晴天時の下水は全量を分離装置
に導き、大雨時は越流せきを超過する分は河川に
放流し、それ以下の分を分離装置に導き、被処理
水と濃縮して固形物を多く含んだ濃縮液を分離
し、処理済みの清浄水を河川に放流し、濃縮液を
下水処理場に送るようにする。このようにして河
川に放流される汚濁質の量を減らすことができ
る。しかしこの場合、分離装置に対して調節を行
なわない場合には、流入量が増加すると処理済水
の量が増大すると共に、濃縮液の量も増大し、下
水処理場の能力3qを越えることになる。 In order to prevent this, a storage tank with an overflow weir is installed in the middle of the sewage channel, and a solid-liquid concentration separation device is installed from this tank with a branch path.The entire amount of sewage on sunny days is guided to the separation device, and during heavy rain, the overflow weir is installed. The excess amount is discharged into the river, the amount less than that is led to a separation device, where it is separated from the water to be treated into a concentrated liquid containing a large amount of solids, and the treated clean water is discharged into the river and concentrated. Send the liquid to a sewage treatment plant. In this way, the amount of pollutants discharged into rivers can be reduced. However, in this case, if the separation equipment is not adjusted, the amount of treated water will increase as the inflow increases, and the amount of concentrated liquid will also increase, exceeding the capacity of the sewage treatment plant (3Q). Become.
本発明は、このような場合に対処できるよう固
液分離装置の改良を行なつたもので、被処理水の
流入量の増加に拘らず下水処理場に導かれる被処
理液の流量を所定の流量以下にすることができる
固液分離装置を提供することを目的とするもので
ある。 The present invention improves the solid-liquid separator in order to deal with such cases, and it maintains the flow rate of the liquid to be treated at a predetermined level regardless of the increase in the amount of inflow of the water to be treated. It is an object of the present invention to provide a solid-liquid separator that can reduce the flow rate to below.
本発明は、ほぼ円形の側壁と底面とを有する槽
に、前記側壁に対して接線方向に被処理水を流入
せしめる流入口と、前記側壁の一部に分離処理後
の処理済み水を槽外に導く放流口と、分離した固
形物を多く含む濃縮液を槽外に導く濃縮液排出部
とを備え、前記放流口の下流側に放流水路を設
け、前記放流口又は前記放流水路の少なくとも何
れか一方に流量調節機構を設け、被処理水の流入
量に応じて前記流量調節機構により放流水流量を
調節し、前記濃縮液の流量を所定の限度以下にす
ることを特徴とする固液分離装置であり、処理済
み水の流量を増加して、被処理液の流量が増加し
ても槽内の水位の変動をほぼ一定以内に保ち、或
いは所定の水位以下となし、濃縮液の流量を所定
の値を越えないようにするものである。 The present invention provides a tank having a substantially circular side wall and a bottom surface, an inlet for allowing water to be treated to flow in in a tangential direction to the side wall, and a part of the side wall for directing treated water after separation treatment to the outside of the tank. and a concentrated liquid discharge part that leads the concentrated liquid containing a large amount of separated solids to the outside of the tank. A solid-liquid separation characterized in that a flow rate adjustment mechanism is provided on one side, and the flow rate of the discharged water is adjusted by the flow rate adjustment mechanism according to the inflow amount of the water to be treated, so that the flow rate of the concentrated liquid is below a predetermined limit. It is a device that increases the flow rate of treated water to maintain the fluctuation of the water level in the tank within an approximately constant range even when the flow rate of the liquid to be treated increases, or to keep it below a predetermined water level, and to control the flow rate of the concentrated liquid. This is to prevent the value from exceeding a predetermined value.
本発明の実施例を図面を用いて説明する。 Embodiments of the present invention will be described using the drawings.
第１図、第２図及び第３図において、分離槽１
は、ほぼ円形（円形、楕円形、長円形などの類似
円形或いはスパイラル状）の側壁２及び底面３を
有している。この分離槽１には被処理液を側壁２
に対して接線方向に導入して分離槽１内における
液に旋回運動を与えるよう流入管路４の流入口５
を側壁２に設ける。流入口５の位置は、一部が底
面３にかかつてもよく、又、底面３のみにあつて
もよい。底面３は外周から中心に向つて傾斜して
いる。底面３は水平面に形成してよいが沈殿性の
固形物を底部中心に集積するためには傾斜してい
る方が効果的である。 In Figures 1, 2 and 3, separation tank 1
has a side wall 2 and a bottom surface 3 that are approximately circular (circular, oval, oval, similar circular shape, or spiral shape). This separation tank 1 has a side wall 2
The inlet 5 of the inflow pipe 4 is introduced in a tangential direction to give a swirling motion to the liquid in the separation tank 1.
is provided on the side wall 2. The inlet 5 may be partially located on the bottom surface 3, or may be located only on the bottom surface 3. The bottom surface 3 is inclined from the outer periphery toward the center. The bottom surface 3 may be formed as a horizontal surface, but it is more effective to have an inclined surface in order to accumulate precipitable solids at the center of the bottom surface.
分離槽１の底面３の中央付近には底部排出管６
を設け、被処理液に含まれている沈殿性の固形物
を後述の如く、旋回流及び二次流により底部に集
積、分離して濃縮された被処理液と共に槽外に排
出するものである。又分離槽１に流入する液量が
減少した場合には、槽内に貯留している固液はこ
れより槽外に排出される。 A bottom discharge pipe 6 is installed near the center of the bottom surface 3 of the separation tank 1.
As described below, the precipitable solids contained in the liquid to be treated are accumulated at the bottom by swirling flow and secondary flow, separated, and discharged to the outside of the tank along with the concentrated liquid to be treated. . Further, when the amount of liquid flowing into the separation tank 1 decreases, the solid liquid stored in the tank is discharged to the outside of the tank.
分離槽１の底面３の中央部を貫通して槽の上方
に延びるオーバーフロー管７を設ける。これは分
離槽１の上部に形成される自由表面８近辺に集積
される浮遊性の固形物やスカムを、自由表面８か
らオーバーフロー管７に流入する被処理液と共に
濃縮液として槽外に排出するものである。 An overflow pipe 7 is provided that passes through the center of the bottom surface 3 of the separation tank 1 and extends upward from the tank. This discharges floating solids and scum accumulated near the free surface 8 formed at the upper part of the separation tank 1 to the outside of the tank as a concentrated liquid together with the liquid to be treated flowing from the free surface 8 into the overflow pipe 7. It is something.
槽内の水位H1がほぼ一定であると、底部排水
管６及びオーバーフロー管７から一定量の沈殿性
及び浮遊性の固形物が連続的に槽外に除去される
ために分離槽１内の固形物濃度は上限値を超える
ことはない。そのために分離槽１の固形物除去率
は低下せず又処理能力も低下することはない。底
部排出管６とオーバーフロー管７により、固形物
を多く含む濃縮液を槽外に導く濃縮液排出部を形
成する。 When the water level H 1 in the tank is approximately constant, a certain amount of settled and floating solids are continuously removed from the bottom drain pipe 6 and overflow pipe 7 to the outside of the tank. The solids concentration will not exceed the upper limit. Therefore, the solid matter removal rate of the separation tank 1 does not decrease, nor does the processing capacity decrease. The bottom discharge pipe 6 and the overflow pipe 7 form a concentrated liquid discharge section for guiding the concentrated liquid containing a large amount of solids to the outside of the tank.
分離槽１の側壁２には放流口９が設けられてい
る。この放流口９は、流入口５から側壁２の周の
流れの方向に沿つてなるべく遠くに設けるのが好
ましい。 A discharge port 9 is provided in the side wall 2 of the separation tank 1 . This discharge port 9 is preferably provided as far as possible from the inlet port 5 along the flow direction around the side wall 2.
放流口９の下流側には越流せき１１を有する放
流水路１０が設けられている。越流せき１１の最
低高さは分離槽１に流入する被処理水の流入量が
一定値を越えて分離槽１の水面がオーバーフロー
管７の上端に達してから、越流せき１１を越えて
流出するように設定することが好ましい。越流せ
きの例については後述する。 A discharge channel 10 having an overflow weir 11 is provided downstream of the discharge port 9. The minimum height of the overflow weir 11 is determined from the time when the amount of water to be treated flowing into the separation tank 1 exceeds a certain value and the water surface of the separation tank 1 reaches the upper end of the overflow pipe 7, and when it exceeds the overflow weir 11. It is preferable to set it so that it flows out. Examples of overflow weirs will be discussed later.
越流せき１１の下流側には、越流管１２を設け
て河川等に連結する。雨量が多くなつて下水処理
場で処理可能な量を超過した水量分を、汚濁物を
除去して河川等に放流することができる。 An overflow pipe 12 is provided downstream of the overflow weir 11 and connected to a river or the like. When the amount of rain increases and the amount of water exceeds the amount that can be treated at a sewage treatment plant, it is possible to remove pollutants and release it into rivers, etc.
１３は安定板であり、流入管路４の流入口５の
上側に設けられている。この安定板１３により槽
内の水の表面の波立ちを防ぎ、比重差による分離
を良好とする。あまり長いと槽内の二次流れを妨
げるので適当な長さとする。第１Ａ図の如くにし
てもよい。安定板１３を流入口の上側に設ければ
製作が容易であると共に補強にもなり、また支柱
がないので固形物が引掛らない。 Reference numeral 13 denotes a stabilizing plate, which is provided above the inlet 5 of the inflow pipe 4. This stabilizer plate 13 prevents the surface of the water in the tank from undulating and improves separation due to the difference in specific gravity. If it is too long, it will obstruct the secondary flow in the tank, so choose an appropriate length. It may be done as shown in FIG. 1A. If the stabilizing plate 13 is provided above the inlet, it will be easy to manufacture and will also serve as reinforcement, and since there is no support, solid objects will not get caught.
１４は浮遊性又は沈殿性の固形物を多く含む濃
縮液を一時貯留する貯槽であり、ポンプ１５によ
り管路１６を経て濃縮液を下水処理場へ送るよう
になつている。１７は水位検出器であり、制御器
１８を介して、貯槽１４内の水位がH4を越えた
らポンプ１５を停止せしめ、H4からの水位低下
が△H4以上になつた場合にポンプ１５を起動せ
しめる。しかして、水位がH4を越えて、ポンプ
１５を停止せしめてもなお水位が上昇するときに
は、制御器１８を介して放流水路１０の流量調節
機構（後述）の操作部１９へ信号を与え処理済み
水の放流流量を増大せしめるようになつている。 Reference numeral 14 denotes a storage tank for temporarily storing a concentrated liquid containing a large amount of floating or precipitated solids, and the concentrated liquid is sent to a sewage treatment plant via a pipe 16 by a pump 15. Reference numeral 17 denotes a water level detector which, via the controller 18, stops the pump 15 when the water level in the storage tank 14 exceeds H4 , and stops the pump 15 when the water level decreases from H4 to △ H4 or more. Activate. When the water level exceeds H4 and the water level still rises even after stopping the pump 15, a signal is sent to the operating section 19 of the flow rate adjustment mechanism (described later) of the discharge waterway 10 via the controller 18 for processing. The amount of discharged water is being increased.
ポンプ１５は単数でも複数でもよく、その流量
調節は回転数制御、台数制御、運転間隔制御或い
はその組合わせで行なう。この流量調節範囲の正
常最大流量を、前述の下水処理場の最大能力の流
量3qに合わせておけば、処理能力以上の濃縮液
を送るおそれはない。そして、貯槽１４に流入す
る濃縮液の量が3qを越えないように、操作部１
９を操作して放流水路１０の流量を増大せしめる
ようにする。 The pump 15 may be a single pump or a plurality of pumps, and its flow rate is controlled by rotational speed control, number control, operation interval control, or a combination thereof. If the normal maximum flow rate in this flow rate adjustment range is adjusted to the maximum capacity flow rate of 3q of the sewage treatment plant mentioned above, there is no risk of sending more concentrated liquid than the treatment capacity. Then, the operation part 1
9 is operated to increase the flow rate of the discharge waterway 10.
２０は分離槽１内の水位を検出する水位検出器
であり、水位H1の変化に応じて制御器２１を介
して操作部１９を操作し、水位H1が増大すれば
放流流量を増大するようになつている。則ち、大
雨などで分離槽１への流入量が増大すれば、水位
H1は高くなり、水位差h1が増大するので、貯槽
１４への流入量は3qを越えてしまう。これを防
ぐためには水位差h1をほぼ一定に、則ち水位H1
をほぼ一定に保てばよい。従つて水位H1を検出
して操作部１９を操作して放流水路１０の流量を
増大せしめ、H1をほぼ一定に保ち、貯槽１４に
入る流量を3qにとどめることができる。 20 is a water level detector that detects the water level in the separation tank 1, and the operation unit 19 is operated via the controller 21 according to changes in the water level H1 , and when the water level H1 increases, the discharge flow rate is increased. It's becoming like that. In other words, if the amount of inflow into separation tank 1 increases due to heavy rain, etc., the water level will decrease.
Since H 1 becomes higher and the water level difference h 1 increases, the amount of water flowing into the storage tank 14 exceeds 3q. To prevent this, the water level difference h 1 must be kept almost constant, that is, the water level H 1
should be kept almost constant. Therefore, by detecting the water level H 1 and operating the operation unit 19 to increase the flow rate of the discharge waterway 10, it is possible to keep H 1 almost constant and keep the flow rate entering the storage tank 14 at 3q.
以上の例で貯槽１４には別途非常用ポンプを備
えておくことが好ましい。 In the above example, it is preferable that the storage tank 14 is provided with a separate emergency pump.
以上の如き実施例の作用について説明する。 The operation of the embodiment as described above will be explained.
流入管路４を経て流入口５より分離槽１内に流
入した下水は槽内を矢印２２の方向に旋回する旋
回流となつて循環し、その間に浮遊性固形物は水
面に浮上し沈殿性固形物は底面３に沈殿する。 The sewage that has flowed into the separation tank 1 from the inlet 5 via the inflow pipe 4 circulates in the tank as a swirling flow in the direction of arrow 22, during which floating solids float to the water surface and settle. The solids settle on the bottom surface 3.
一方槽内の旋回流により、矢印２３に示す如
き、側壁２に沿つて下降し、底面３に沿つて中央
に向かい、オーバーフロー管７の外側に沿つて上
昇し、自由表面８に沿つて周囲に向かつて循環し
て流れる二次流れを生ずる。底面３に沈殿した固
形物は、底面３の傾斜によつて重力により次第に
集まる傾向があるが、この二次流れによつて一層
短時間で中央に寄せ集められ、底部排出管６より
効果的に排出される。 On the other hand, due to the swirling flow in the tank, as shown by the arrow 23, it descends along the side wall 2, moves toward the center along the bottom surface 3, rises along the outside of the overflow pipe 7, and flows toward the surroundings along the free surface 8. This creates a secondary flow that circulates in the opposite direction. The solids that have settled on the bottom surface 3 tend to gradually collect due to gravity due to the slope of the bottom surface 3, but this secondary flow collects them in the center in a shorter time and allows them to be collected more effectively than the bottom discharge pipe 6. It is discharged.
また、浮遊性の固形物は比較的軽いものはすぐ
浮上してオーバーフロー管７の上端からオーバー
フローするが、比重が１に近いものは旋回流に巻
き込まれてなかなか浮上分離されない。しかし本
実施例においては上記の如く二次流れが生ずるの
でオーバーフロー管７の周囲に寄せ集められるの
でオーバーフローによる除去が容易に、早く行な
われる。 Further, relatively light floating solids float to the top and overflow from the upper end of the overflow pipe 7, but those with a specific gravity close to 1 are caught in the swirling flow and are difficult to float and separate. However, in this embodiment, the secondary flow is generated as described above and is gathered around the overflow pipe 7, so that the overflow can be easily and quickly removed.
大雨などで被処理水の流入量が増大した場合に
は、前述の如く水位検出器１７により、ポンプ１
５を停止してもなお水位がH4を越えて上昇する
ことを検出して操作部１９を操作する方法を用い
てもよいし、また前述の如く水位検出器２０によ
り水位H1を検出し、設定値より増大した場合に
は操作部１９を操作する方法を用いてもよいし、
或いは両者を併用してもよい。また、流入量或い
は他の部分の流量を回転式又はせき式などの流量
計にて検出して、その信号により操作部１９を操
作してもよい。 When the inflow of water to be treated increases due to heavy rain, etc., the water level detector 17 detects that the pump 1
Alternatively, the operation unit 19 may be operated by detecting that the water level has risen above H 4 even after stopping the water level H 4 , or the water level H 1 may be detected by the water level detector 20 as described above. , a method may be used in which the operating unit 19 is operated when the value increases beyond the set value,
Alternatively, both may be used together. Alternatively, the inflow amount or the flow rate of other parts may be detected by a rotary type or weir type flow meter, and the operating section 19 may be operated based on the signal.
このようにして操作部１９を操作して放流水路
１０の放流流量Q2を増大せしめてQ3，Q4の増大
を防ぎ、3qを保持して下水処理場の過負荷を防
ぐ。 In this way, the operation unit 19 is operated to increase the discharge flow rate Q 2 of the discharge waterway 10 to prevent increases in Q 3 and Q 4 and to maintain 3q to prevent overload of the sewage treatment plant.
第４図以降に放流流量の流量調節機構の実施例
を示す。 Embodiments of the flow rate adjustment mechanism for the discharge flow rate are shown in FIG. 4 and subsequent figures.
第４図ａ，ｂに示すものは、固定せき２４と、
操作部１９としての駆動装置により昇降する昇降
せき２５とを組合せたものである。 The one shown in FIGS. 4a and 4b has a fixed weir 24,
It is combined with an elevating and lowering weir 25 that is raised and lowered by a drive device as an operating section 19.
第５図は、さらに放流口９の開口面積を変化せ
しめる開閉ふた２６を併用したものである。 In FIG. 5, an opening/closing lid 26 for changing the opening area of the discharge port 9 is also used.
第６図ａ，ｂに示すものは、着脱可能でかつそ
れぞれ高さの異なるせき板２７を重ねたもので、
組合せを選べば多くの種類の高さのせきが得られ
る。この場合操作部１９の代りに必要な高さなど
を表示する表示器を用い、この表示を見てそれに
合うものを組合わせて用いる。或いは雨量に基づ
いて予めせき高さを想定して組合わせておく。 The one shown in FIGS. 6a and 6b is a stack of removable weir plates 27 of different heights.
Many different heights can be obtained by selecting combinations. In this case, a display that displays the required height, etc. is used in place of the operation unit 19, and the user looks at this display and uses a combination that matches the height. Alternatively, the weir height can be estimated and combined based on the amount of rainfall.
第７図、第８図、第９図は、三角ノツチ、段階
状ノツチ、円形ノツチを備えたせき１１を示し、
何れも水位が高くなるにつれせきの幅が増大する
ようになつている。従つて水位H2が上昇した場
合、Q2／（Q3＋Q4）の流量比は増大し、Q2が増
し、流量調節の作用をなし、Q3＋Q4の増大を防
ぐことができる。 7, 8 and 9 show a weir 11 with a triangular notch, a stepped notch and a circular notch,
In both cases, the width of the weir increases as the water level rises. Therefore, when the water level H 2 rises, the flow rate ratio of Q 2 /(Q 3 +Q 4 ) increases, Q 2 increases, the flow rate is adjusted, and an increase in Q 3 +Q 4 can be prevented.
第１０図は、さらに昇降せき２５を併用したも
のである。 In FIG. 10, an elevating and lowering weir 25 is also used.
本発明により、固液分離装置への流入量が増大
しても、下水処理場へ送る濃縮液の流量を、所定
の値を越えないように保持するこのができ、しか
も構造も制御も簡単な固液分離装置を提供するこ
のができ、極めて大なる効果を奏する。 The present invention makes it possible to maintain the flow rate of concentrated liquid sent to the sewage treatment plant so as not to exceed a predetermined value even if the amount of inflow to the solid-liquid separator increases, and is simple in structure and control. This provides a solid-liquid separator and has extremely great effects.
図面は本発明の実施例に関するもので、第１図
は平面図、第１Ａ図は他の実施例の安定板付近の
平面図、第２図は第１図の−線断面図、第３
図は第２図の−線断面図、第４図ないし第１
０図は流量調節機構の実施例であり、第４図ａは
放流水路１０の横断面図、同ｂはその−断面
図、第５図は放流水路１０の縦断面図、第６図ａ
は同ｂの−断面図、同ｂは放流水路１０の横
断面図、第７図ないし第１０図は放流水路１０の
横断面図である。
１……分離槽、２……側壁、３……底面、４…
…流入管路、５……流入口、６……底部排出管、
７……オーバーフロー管、８……自由表面、９…
…放流口、１０……放流水路、１１……越流せ
き、１２……越流管、１３……安定板、１４……
貯槽、１５……ポンプ、１６……管路、１７……
水位検出器、１８……制御器、１９……操作部、
２０……水位検出器、２１……制御器、２２，２
３……矢印、２４……固定せき、２５……昇降せ
き、２６……開閉ふた、２７……せき板。
The drawings relate to embodiments of the present invention; FIG. 1 is a plan view, FIG. 1A is a plan view of the vicinity of the stabilizer plate of another embodiment, FIG.
The figure is a - line sectional view of Figure 2, Figures 4 to 1.
0 shows an embodiment of the flow rate adjustment mechanism, FIG. 4a is a cross-sectional view of the discharge waterway 10, FIG. 4b is a cross-sectional view thereof, FIG.
is a cross-sectional view of the discharge waterway 10, and FIGS. 7 to 10 are cross-sectional views of the discharge waterway 10. 1...Separation tank, 2...Side wall, 3...Bottom surface, 4...
...Inflow pipe, 5...Inflow port, 6...Bottom discharge pipe,
7... Overflow pipe, 8... Free surface, 9...
... Outlet, 10... Outlet waterway, 11... Overflow weir, 12... Overflow pipe, 13... Stabilizer, 14...
Storage tank, 15...Pump, 16...Pipe line, 17...
Water level detector, 18...controller, 19...operation unit,
20...Water level detector, 21...Controller, 22,2
3...arrow, 24...fixed weir, 25...elevating weir, 26...opening/closing lid, 27...weir plate.
Claims (1)
側壁に対して接線方向に被処理水を流入せしめる
流入口と、前記側壁の一部に分離処理後の処理済
み水を槽外に導く放流口と、分離した固形物を多
く含む濃縮液を槽外に導く濃縮液排出部とを備
え、前記放流口の下流側に放流水路を設け、前記
放流口又は前記放流水路の少なくとも何れか一方
に流量調節機構を設け、被処理水の流入量に応じ
て前記流量調節機構により放流水流量を調節し、
前記濃縮液の流量を、所定の限度以下にすること
を特徴とする固液分離装置。 ２ 前記流量調節機構が越流せきである特許請求
の範囲第１項記載の装置。 ３ 前記越流せきの高さの調節が可能な特許請求
の範囲第２項記載の装置。 ４ 前記越流せきの幅が、水位が高くなる程大き
くなつている特許請求の範囲第２項記載の装置。 ５ 前記放流口の開口面積が調節可能である特許
請求の範囲第１項記載の装置。[Scope of Claims] 1. A tank having a substantially circular side wall and a bottom surface, an inlet for allowing water to be treated to flow in in a tangential direction to the side wall, and a part of the side wall containing treated water after separation treatment. a discharge port that guides the separated concentrate to the outside of the tank, and a concentrate discharge section that guides the concentrated liquid containing a large amount of separated solids to the outside of the tank, and a discharge waterway is provided on the downstream side of the discharge port, and the discharge port or the discharge waterway A flow rate adjustment mechanism is provided in at least one of the above, and the flow rate of the discharged water is adjusted by the flow rate adjustment mechanism according to the inflow amount of the water to be treated,
A solid-liquid separator characterized in that the flow rate of the concentrated liquid is kept below a predetermined limit. 2. The device according to claim 1, wherein the flow rate adjustment mechanism is an overflow weir. 3. The device according to claim 2, wherein the height of the overflow weir can be adjusted. 4. The device according to claim 2, wherein the width of the overflow weir increases as the water level increases. 5. The device according to claim 1, wherein the opening area of the outlet is adjustable.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21839782A JPS59109632A (en) | 1982-12-15 | 1982-12-15 | Solid-liquid separatng apparatus |
| US06/538,992 US4517091A (en) | 1982-11-02 | 1983-10-04 | Solids-liquid separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21839782A JPS59109632A (en) | 1982-12-15 | 1982-12-15 | Solid-liquid separatng apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59109632A JPS59109632A (en) | 1984-06-25 |
| JPS627335B2 true JPS627335B2 (en) | 1987-02-17 |
Family
ID=16719264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21839782A Granted JPS59109632A (en) | 1982-11-02 | 1982-12-15 | Solid-liquid separatng apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59109632A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63120738U (en) * | 1987-01-29 | 1988-08-04 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4603211B2 (en) * | 2001-08-24 | 2010-12-22 | 前澤工業株式会社 | Lifting overflow dam |
| JP5663209B2 (en) * | 2010-06-22 | 2015-02-04 | 株式会社イトーヨーギョー | Pollutant trapping structure and pollutant trapping facility |
-
1982
- 1982-12-15 JP JP21839782A patent/JPS59109632A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63120738U (en) * | 1987-01-29 | 1988-08-04 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59109632A (en) | 1984-06-25 |
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