JPS61222584A - Liquid drain apparatus - Google Patents
Liquid drain apparatusInfo
- Publication number
- JPS61222584A JPS61222584A JP6332785A JP6332785A JPS61222584A JP S61222584 A JPS61222584 A JP S61222584A JP 6332785 A JP6332785 A JP 6332785A JP 6332785 A JP6332785 A JP 6332785A JP S61222584 A JPS61222584 A JP S61222584A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- nonwoven fabric
- tank
- liquid tank
- drainage device
- 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
Landscapes
- Filtering Materials (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、し尿排水、畜産排水２食品加工場排水、浚渫
排水その地固形化成分を含有する汚液から主として液体
を分離して取り出す排液装置に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to wastewater, livestock wastewater, food processing plant wastewater, dredging wastewater, and wastewater that mainly separates and extracts liquid from sewage containing soil solidification components. Related to liquid equipment.
（従来技術〕
従来、上述のような排液装置としては、汚液を沈殿槽に
貯溜して上澄液を取り出す装置やテ液槽の底面に設けた
砂利、砂等のフィルタ層を通して液体を取り出す装置が
多く用いられている。これらの装置において取〕出す排
液の純度や量を高めるために、汚液に明ばん等の凝集剤
を加えて攪拌を与えたシ、汚液面の高さを適当に制御し
たシ、加圧したりすることも行われている。このうち、
沈殿法によるものは、排液の純度を高めようとすると凝
集剤を加えても沈殿に非常に時間が掛るし、それでもな
お、排液中に固形化成分が混入し易いと言う問題がある
。また、濾過法によるものは排液中に固形化成分が混入
することは比較的少ないが、フィルタ層が直きに目詰シ
して排液量が減少し、目詰シしたフィルタ層の交換に非
常に手間が掛ると言う問題がある。そして、沈殿法によ
るものも濾過法によるものも、沈殿槽やＦ液槽に比較的
大きな表面積を必要とするし、凝集剤を用いて攪拌する
ようにした場合や汚液面制御や加圧等を行うようにした
場合は、薬品代や運転費、設備費等が増加すると言った
問題もある。(Prior art) Conventionally, the above-mentioned liquid drainage devices include a device that stores wastewater in a sedimentation tank and extracts the supernatant liquid, and a device that drains liquid through a filter layer of gravel, sand, etc. provided at the bottom of the sedimentation tank. In order to increase the purity and quantity of the waste liquid taken out in these devices, a flocculant such as alum is added to the sewage liquid to give it agitation, and the level of the sewage liquid is raised. It is also possible to appropriately control the temperature and apply pressure.
In the case of the precipitation method, even if a flocculant is added to increase the purity of the waste liquid, precipitation takes a very long time, and even then, there is a problem in that solidified components are likely to be mixed into the waste liquid. In addition, when using the filtration method, it is relatively rare for solidified components to be mixed into the drained liquid, but the filter layer quickly becomes clogged and the amount of drained liquid decreases, and the clogged filter layer can be replaced. The problem is that it takes a lot of time. Both the sedimentation method and the filtration method require a relatively large surface area in the sedimentation tank or F liquid tank, and when a flocculant is used for stirring, sewage level control, pressurization, etc. If this is done, there is also the problem that the cost of chemicals, operating costs, equipment costs, etc. will increase.
本発明は、従来の濾過法によるものよりもさらに排液中
に固形化成分の混入することが少なく、固形化成分の沈
殿によってＦ材が目詰シすることも少なく、たとえ目詰
夛しても戸材の交換が液槽から汚液を除くことなく簡単
にでき、液槽を従来の沈殿槽やＶ液槽より小さくしても
効率の良い排液が行われ、凝集剤を用いなくて済み、運
転コストや設備費も安く済むと言った優れた特長を有す
る排液装置を提供するものである。In the present invention, there is less chance of solidified components being mixed into the waste liquid than with conventional filtration methods, and there is also less chance of clogging of the F material due to precipitation of solidified components. The door material can be easily replaced without removing the waste liquid from the liquid tank, and even if the liquid tank is smaller than a conventional settling tank or V liquid tank, the liquid can be drained efficiently, and no flocculants are used. The purpose of the present invention is to provide a liquid drainage device that has excellent features such as low cost, low operating costs, and low equipment costs.
本発明は、固形化成分を含有する汚液を貯溜した液槽か
ら主として液体を取り出す排液装置において、前記液体
に対し毛管吸上げ作用を示す不織布を一端側が液槽内で
汚液中に垂下し他端側か液槽の外側で垂下するように設
けて、該不織布により液槽内の汚液から液体を取り出す
ことを特徴とする排液装置にあシ、この構成によって上
記目的を達成したものである。The present invention provides a drainage device that mainly takes out liquid from a liquid tank storing waste liquid containing solidifying components, in which a nonwoven fabric exhibiting a capillary wicking action on the liquid is suspended in the liquid tank with one end thereof suspended in the waste liquid. The above object is achieved by means of this structure. It is something.
以下、図示例を参照して本発明を説明する。 The present invention will be described below with reference to illustrated examples.
第１図は本発明排液装置の最も簡単外構成を示す断面図
、第２図及び第３図は処理容量を大きくした本発明排液
装置の断面図及び第２図のＸ−Ｘ矢視断面図である。Fig. 1 is a sectional view showing the simplest external configuration of the liquid drainage device of the present invention, and Figs. 2 and 3 are sectional views of the liquid drainage device of the present invention with a larger processing capacity, and taken along the line X-X in Fig. 2. FIG.
図において、１は液槽、２はパルプ３を介して液槽１に
固形化成分を含有した汚液４を送り込む給液管、５は汚
液４の液体に対し毛管吸上げ作用を示す不織布である。In the figure, 1 is a liquid tank, 2 is a liquid supply pipe that feeds the waste liquid 4 containing solidifying components into the liquid tank 1 via the pulp 3, and 5 is a nonwoven fabric that exhibits a capillary wicking effect on the liquid of the waste liquid 4. It is.
第１図の排液装置における不織布５は、液槽ｌの側壁に
形成したガイド部１ａＫ掛けられて一端側か液槽１内に
垂下し、他端側か液槽１外に垂下しているものであるが
、第２図及び第３図の排液装置における不織布５は、３
枚を重ねて液槽１のガイド部１ａに掛け、その中の下の
１枚は第１図の不織布５と同様にガイド部１ａの両側に
垂下し、上の２枚は液槽１の外側においては下の１枚に
沿って垂下し、液槽１の内側においてはそれぞれガイド
バー６に導かれて３枚の垂下位置に間隔が空くように垂
下しているものである。また、第１図の排液装置は、汚
液４が不織布５を超えて液槽１外にとほれ出ることのな
いように、汚液４の液面を常にガイド５１２Ｌの高さ以
下に保つものであるが、第２図及び第３図の排液装置は
、液槽１のガイド部１ａに乗っている不織布５の上方の
堪状部を堰板１ｂによって塞ぐようにしているから、汚
液４の液面を不織布５の水平に導かれている部分よりも
上昇させることができるものである。７は不織布５が液
槽１から吸上げて液槽１外に落す液体を受ける排液ビッ
ト、８は排液ビット７が排液を貯めるものである場合に
排液ビット７から排液を送り出す排液管でパルプ９が設
けられている。本発明の排液装置は、予め沈殿法の排液
装置で沈殿し易い固形化成分を除去したような汚液を処
理するのに特に好適に用いられるので、第２図はまたこ
の使用例も示してお夛、給液管２は沈殿槽１０の上澄み
液を液槽１に導いて汚液４とする。The nonwoven fabric 5 in the liquid drainage device shown in FIG. 1 is hung from a guide part 1aK formed on the side wall of the liquid tank 1, and hangs down inside the liquid tank 1 at one end, and hangs outside the liquid tank 1 at the other end. However, the nonwoven fabric 5 in the drainage device of FIGS. 2 and 3 is
The sheets are stacked and hung on the guide part 1a of the liquid tank 1, and the lower one hangs down on both sides of the guide part 1a in the same way as the nonwoven fabric 5 in FIG. In this case, the three sheets hang down along the bottom one, and inside the liquid tank 1, they are guided by guide bars 6 and hang down at three hanging positions with an interval between them. In addition, the draining device shown in FIG. 1 always maintains the liquid level of the dirty liquid 4 below the height of the guide 512L so that the dirty liquid 4 does not exceed the nonwoven fabric 5 and spill out of the liquid tank 1. However, in the liquid draining device shown in FIGS. 2 and 3, the upper bulge-shaped part of the nonwoven fabric 5 resting on the guide part 1a of the liquid tank 1 is blocked by the weir plate 1b, so that the liquid drainage device is not contaminated. The liquid level of the liquid 4 can be raised higher than the horizontally guided portion of the nonwoven fabric 5. Reference numeral 7 denotes a drainage bit for receiving the liquid that the nonwoven fabric 5 sucks up from the liquid tank 1 and drops to the outside of the liquid tank 1. Reference numeral 8 denotes a drainage bit for sending out the drainage from the drainage bit 7 when the drainage bit 7 is for storing the drainage. A pulp 9 is provided in the drain pipe. The drainage device of the present invention is particularly suitably used to treat sewage from which solidified components that tend to precipitate have been removed using a drainage device using a precipitation method. As shown, the liquid supply pipe 2 guides the supernatant liquid from the sedimentation tank 10 to the liquid tank 1 to form a waste liquid 4.
以上のような本発明排液装置においては、不織布５は液
槽１の汚液４から主として液体を吸上げて液槽１外に導
き排液ピット７に落下させる。その間、液槽１の底に汚
液４の固形化成分が一／尤殿して溜るようになるが、不
織布５の上記吸上げは垂下部分以上で行われるから、固
形化成分沈殿の影響を受けることが極めて少ない。また
、不織布５の液体吸上けに伴って表面に固形化成分が付
着するようになるが、垂下部分に付着した固形化成分は
付着量が増すと重力によって下方に落下するようＫなる
から、この付着によっても不織布５の液体吸上げ能力は
急激に減殺されることがない。In the liquid drainage device of the present invention as described above, the nonwoven fabric 5 mainly sucks up liquid from the dirty liquid 4 in the liquid tank 1, guides it out of the liquid tank 1, and causes it to fall into the liquid drainage pit 7. During this time, some of the solidified components of the waste liquid 4 will precipitate and accumulate at the bottom of the liquid tank 1, but since the above-mentioned suction of the nonwoven fabric 5 is performed above the hanging portion, the influence of the solidified components precipitation will be reduced. Very rarely received. In addition, as the nonwoven fabric 5 absorbs liquid, solidified components begin to adhere to the surface, but as the amount of solidified components attached to the hanging portions increases, they fall downward due to gravity. Even with this adhesion, the liquid suction ability of the nonwoven fabric 5 is not suddenly reduced.
第１図の排液装置は、不織布５の垂下部分のみが汚液４
と接触して液体を吸上げるものであるが、第２図の排液
装置は、汚液４の固形化成分の割合が低いときは液面を
不織布５の水平部分が液面下となるように高めて排液量
を多くし、汚液４の固形化成分の割合が高くなったら液
面を不織布５の垂下部分のみが汚液４と接触するように
下げて安定した排液が行われるようにできるものである
。In the draining device shown in FIG. 1, only the hanging portion of the nonwoven fabric 5
However, when the proportion of solidified components in the waste liquid 4 is low, the liquid drainage device shown in FIG. When the proportion of solidified components in the waste liquid 4 becomes high, the liquid level is lowered so that only the hanging portion of the nonwoven fabric 5 comes into contact with the waste liquid 4, and stable liquid drainage is performed. It can be done as follows.
この場合、汚液４の固形化成分の割合が高くなっても液
面を高いレベルに維持したとすると、不織布５の水平部
分で目詰シが生じて排液効率が低下することが生じるが
、それでも従来の一過法排液装置におけるよシも排液効
率の低下する速度は著しく遅い。したがって、液面を高
いレベルに保つようＫしてもよい。そして、本発明の排
液装置においては、目詰りの生じた不織布５の交換が液
槽１に汚液４を貯えたま−でも容易にできる。In this case, if the liquid level is maintained at a high level even if the proportion of solidified components in the waste liquid 4 increases, clogging may occur in the horizontal portions of the nonwoven fabric 5, resulting in a decrease in drainage efficiency. However, the rate at which the drainage efficiency decreases is significantly slower than in the conventional one-time drainage system. Therefore, K may be used to maintain the liquid level at a high level. In the liquid drainage device of the present invention, the clogged nonwoven fabric 5 can be easily replaced even while the liquid tank 1 is filled with the dirty liquid 4.
本発明排液装置における不織布５は、汚液４の液体の吸
い上げ作用を示すものであればどのようなものも用いら
れるが、液体を吸収して膨潤したシすることの′ない繊
維から成る不織布が好ましく、特に繊維の方向が液体の
吸上げ方向に並んでいるようなものが好ましい。また、
不織布５の汚液４と接触゛しない液体数シ出し側の表面
を例えば樹脂層のような気密壁で囲むようにすると、サ
イフオン作用によって不織布５の液体吸上げ作用を一層
高めることもできる。不織布５を通って排液ピット７に
落下する排液は、不織布５のフィルタ作用によって著し
く固形化成分の含有率の低いものとなっている。The nonwoven fabric 5 in the drainage device of the present invention may be any material as long as it has the ability to suck up the liquid from the waste liquid 4, but it is a nonwoven fabric made of fibers that absorb liquid and swell and do not swell. is preferable, and particularly preferable is one in which the fiber direction is aligned in the liquid suction direction. Also,
If the surface of the nonwoven fabric 5 on the liquid extraction side that does not come into contact with the dirty liquid 4 is surrounded by an airtight wall such as a resin layer, the liquid suction effect of the nonwoven fabric 5 can be further enhanced by the siphon effect. The waste liquid that passes through the non-woven fabric 5 and falls into the drain pit 7 has a significantly low content of solidified components due to the filtering action of the non-woven fabric 5.
次に本発明のよシ具体的な実施例を示す。Next, more specific embodiments of the present invention will be shown.
実施例１゜
排液装置の構造は第１図に示したようなものとし、不織
布５には、１．５ ａｅのポリエステルトウを開繊して
シート状に形成した目付３５９７ｍ の繊維が平行に並
んだトウ開繊不織布の両面に３ａｅ。Example 1 The structure of the liquid drainage device was as shown in Fig. 1, and the nonwoven fabric 5 had fibers with a basis weight of 3597 m, which were formed into a sheet shape by opening polyester tow of 1.5 ae, in parallel. 3ae on both sides of the lined tow spread nonwoven fabric.
５１ｍのポリエステルスフのカードウェブの積層を重ね
、それらの重ね合わせをニードルパンチングで結合した
全体の目付が５３０ｆ／ｍ’、厚さが３閣、嵩比重が約
０．１８９７０１ｍ３の不織布をトウ開繊不織布の繊維
方向が液体の吸上げ方向となるように幅２０Ｃ１Ｒに切
断したものを用いた。液槽１のガイド部１ａの上面から
の深さ１００に対して、不織布５を液槽１の内側には底
から２ Ｃｌ１１の高さにまで垂下するようにし、液槽
１の外側にはガイド部１ａの上面から１５ｃｍ下方にま
で垂下するようにした。そして、ＪＩＳＫＯ１０２法に
よって測定した固形浮遊物質量ＳＳが９２００ ｍ９／
ｌ 、生物学的酸素要求量ＢＯＤが７２５０ ”９／
ｔの汚液４を液槽１に（Ａｌ液面がガイド部１ａと略同
じ高さ、（Ｂｌ液面がガイド部１ａから１．５ｃｍ下っ
た高さ、（Ｃ）液面がガイド部１ａから３Ｃ１ｌ下った
高さにあるように貯えて不織布５の液槽１の外側下端か
ら落下する排液量を測定した０その結果、（４）の場合
は３０１／ｂｒ 、 （Ｂｌの場合は５ ｊ／ｈｒ 、
（０）の場合は約１１／ｈｒの割合で長時間安定して
排液され、排液はいずれもＳＳが１００→／ｌ、ＢＯＤ
が４００ｇ９／を程度の固形化成分含有量の少ないもの
であった。51m of polyester fiber card webs are stacked and the stacks are bonded by needle punching.The nonwoven fabric has a total basis weight of 530f/m', a thickness of 3mm, and a bulk specific gravity of about 0.189701m3. The nonwoven fabric was cut into a width of 20C1R so that the fiber direction was in the liquid suction direction. With respect to the depth 100 from the upper surface of the guide portion 1a of the liquid tank 1, the nonwoven fabric 5 is placed inside the liquid tank 1 so as to hang down to a height of 2 Cl11 from the bottom, and the outside of the liquid tank 1 is provided with a guide. It was made to hang down 15 cm from the upper surface of part 1a. And the amount of solid suspended solids SS measured by JISKO102 method is 9200 m9/
l, biological oxygen demand BOD is 7250 ”9/
(C) The liquid level is approximately the same height as the guide part 1a, (the Bl liquid level is 1.5 cm below the guide part 1a, and (C) the liquid level is at the same height as the guide part 1a. The amount of drained liquid that falls from the outer lower end of the liquid tank 1 of the nonwoven fabric 5 was measured by storing the liquid at a height of 3C1l below 0.The results were 301/br for (4) and 5 for (Bl). j/hr,
In the case of (0), the liquid is drained stably for a long time at a rate of about 11/hr, and the drained liquid has an SS of 100 →/l and a BOD of
The content of solidifying components was as low as 400g9/.
実施例２゜
排液装置の構造は第２図に示したようなものとし、不織
布５は３枚とも実施例１と同じものとして実施例１と同
じ深さの液槽ｌ内にそれぞれ垂下する条件及び液槽ｌ外
に垂下する条件を実施例１と同じ下方位置までとした。Example 2 The structure of the liquid drainage device is as shown in FIG. 2, and all three nonwoven fabrics 5 are the same as in Example 1, and each of them is suspended in a liquid tank l having the same depth as in Example 1. The conditions and the conditions for hanging outside the liquid tank 1 were the same as in Example 1 up to the lower position.
そして汚液４の条件も実施例１と同じにして排液の測定
を行ったところ、排液量は実施例１の略３倍、排液の質
は実施例１と殆んど変らなかった。When the effluent was measured under the same conditions for sewage 4 as in Example 1, the amount of effluent was approximately three times that of Example 1, and the quality of the effluent was almost the same as in Example 1. .
実施例３゜
第１図と同様の装置を用いた。但し、液槽１にはガイド
部１ａからの深さが２５Ｃ１１以上のものを用いた。ま
た、不織布５としては、実施例１と同じ不織布の外側を
ポリエチレンフィルムで囲ンタものを用い、液槽１の内
側にはガイド部１ａから２３ｃ＋ｍ下方まで垂下して下
から８ｃＩＩＩの間の外側を囲むポリエチレンフィルム
を除去し、液槽１の外側にはガイド部１ａかも２５備下
方まで垂下した。Example 3 A device similar to that shown in FIG. 1 was used. However, the liquid tank 1 used had a depth of 25C11 or more from the guide portion 1a. In addition, as the nonwoven fabric 5, the same nonwoven fabric as in Example 1 with the outside surrounded by a polyethylene film was used, and inside the liquid tank 1, it hung down from the guide part 1a to 23c+m below, and the outside between 8cIII from the bottom was The surrounding polyethylene film was removed, and the guide portion 1a was suspended down to the outside of the liquid tank 1 to a depth 25 below.
そして、実施例１と同じ汚液４を液面がガイド部１ａか
ら１５Ｃ１ｍ下った位置になるように液槽１に貯えたが
、この場合は５ ｈｒ経過しても不織布５から排液され
なかった。しかし、汚液４の液面を一旦ガイド部１ａか
ら３ ｃ＋ｍ下った位置まで上けて、略５１／ｂｒの割
合で排液が行われるようになってから液面を最初の位置
まで下げた場合は、略同じような割合で排液が継続され
た。そして排液の性質は実施例１，２と同様８８ ＋Ｂ
ＯＤの低いものであった。Then, the same dirty liquid 4 as in Example 1 was stored in the liquid tank 1 so that the liquid level was 15C1m below the guide part 1a, but in this case, the liquid was not drained from the nonwoven fabric 5 even after 5 hours had passed. Ta. However, once the liquid level of the dirty liquid 4 was raised to a position 3 c+m below the guide part 1a, and the liquid was drained at a rate of approximately 51/br, the liquid level was lowered to the initial position. In this case, drainage continued at approximately the same rate. The properties of the drained liquid are the same as in Examples 1 and 2.88 +B
It had a low OD.
〔発明の効果〕
本発明の排液装置は、従来の排液装置に比較して、設置
に場所を取らず、安価に得られ、運転経費が少なくて済
み、凝集剤を用いる必要がなく、不織布が安価に得られ
て交換が容易であり、排液のＳＳやＢＯＤが極めて低く
、液槽に沈殿した固形化成分の除去も容易に行い得ると
言う多くの優れた効果を奏する。[Effects of the Invention] Compared to conventional drainage devices, the drainage device of the present invention does not take up much space to install, is inexpensive, has low operating costs, and does not require the use of flocculants. It has many excellent effects such as non-woven fabric can be obtained at low cost, easy to replace, SS and BOD of the drained liquid are extremely low, and solidified components precipitated in the liquid tank can be easily removed.
第１図は本発明排液装置の最も簡単な構成を示す断面図
、第２図及び第３図は処理容量を大きくした本発明排液
装置の断面図及び第２図のＸ−Ｘ矢視断面図である。
１・・・液槽、 １ａ・・・ガイド部、１
ｂ・・・基板、 ２・・・給液管、３．９・
・・パルプ、 ４・・・汚液、５・・・不織布、
６・・・ガイドバー、７・・・排液ピット、
８・・・排液管、１０・・・沈殿槽。Fig. 1 is a sectional view showing the simplest configuration of the liquid drainage device of the present invention, and Figs. 2 and 3 are sectional views of the liquid drainage device of the present invention with a larger processing capacity, and viewed from the X-X arrow in Fig. 2. FIG. 1...Liquid tank, 1a...Guide part, 1
b... Board, 2... Liquid supply pipe, 3.9.
...pulp, 4...sewage, 5...nonwoven fabric,
6... Guide bar, 7... Drainage pit,
8... Drain pipe, 10... Sedimentation tank.
Claims (1)
して液体を取り出す排液装置において、前記液体に対し
毛管吸上げ作用を示す不織布を一端側が液槽内で汚液中
に垂下し他端側が液槽の外側で垂下するように設けて、
該不織布により液槽内の汚液から液体を取り出すことを
特徴とする排液装置。 ２、前記不織布が液槽内でガイドまでは略水平に保持さ
れ、ガイド位置から汚液中に垂下している特許請求の範
囲１項記載の排液装置。 ３、前記不織布が複数枚の不織布を重ねて用いて液槽内
においては不織布を略水平に保持するガイドにより複数
枚の不織布の汚液中に垂下する位置を互いにずらされて
いる特許請求の範囲１項記載の排液装置。 ４、前記液槽内の汚液の液面が前記不織布の液槽内で垂
下している範囲を超えることがない特許請求の範囲１項
乃至第３項のいずれか に記載の排液装置。 ５、前記不織布が液槽の側壁を貫通するように設けられ
、液槽内の汚液の液面を前記固形化成分の割合が低いと
きには不織布の液槽内で垂下している範囲を超えるよう
に高め、固形化成分の割合が高いときには不織布の液槽
内で垂下している範囲に下げるようにした特許請求の範
囲１項乃至第３項のいずれかに記 載の排液装置。 ６、前記不織布の常に液槽内の汚液面よりも液体取り出
し側にある部分の外側を気密壁で包んでサイフォン作用
も利用するようにした特許請求の範囲第１項乃至第５項
のいずれかに記載の排液装置。 ７、前記液槽の汚液が別に設けた沈殿槽から送り込まれ
る上澄み液である特許請求の範囲第４項乃至第６項のい
ずれかに記載の排液装置。[Scope of Claims] 1. In a drainage device that mainly takes out liquid from a liquid tank storing waste liquid containing solidified components, one end of a nonwoven fabric that exhibits a capillary wicking action for the liquid is disposed in the liquid tank. It is installed so that it hangs down into the liquid and the other end hangs down outside the liquid tank.
A liquid drainage device characterized in that liquid is taken out from dirty liquid in a liquid tank using the nonwoven fabric. 2. The liquid drainage device according to claim 1, wherein the nonwoven fabric is held substantially horizontally in the liquid tank up to the guide, and hangs down into the waste liquid from the guide position. 3. The nonwoven fabric is a plurality of nonwoven fabrics stacked one on top of the other, and the positions of the plurality of nonwoven fabrics hanging in the sewage are shifted from each other by guides that hold the nonwoven fabrics substantially horizontally in the liquid tank. The liquid drainage device according to item 1. 4. The liquid drainage device according to any one of claims 1 to 3, wherein the liquid level of the dirty liquid in the liquid tank does not exceed the range in which the nonwoven fabric is hanging in the liquid tank. 5. The non-woven fabric is provided so as to penetrate the side wall of the liquid tank, and when the proportion of the solidification component is low, the non-woven fabric is provided so as to penetrate the side wall of the liquid tank, and when the proportion of the solidification component is low, the non-woven fabric is arranged so as to exceed the hanging range in the liquid tank. 4. The liquid draining device according to claim 1, wherein the liquid draining device is configured to lower the liquid to a level where it hangs in the liquid tank of the nonwoven fabric when the proportion of the solidified component is high. 6. Any one of claims 1 to 5, wherein the outside of the portion of the nonwoven fabric that is always on the liquid extraction side with respect to the dirty liquid surface in the liquid tank is wrapped with an airtight wall so that a siphon effect is also utilized. The drainage device described in Crab. 7. The liquid drainage device according to any one of claims 4 to 6, wherein the waste liquid in the liquid tank is a supernatant liquid sent from a separately provided sedimentation tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6332785A JPS61222584A (en) | 1985-03-29 | 1985-03-29 | Liquid drain apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6332785A JPS61222584A (en) | 1985-03-29 | 1985-03-29 | Liquid drain apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61222584A true JPS61222584A (en) | 1986-10-03 |
Family
ID=13226044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6332785A Pending JPS61222584A (en) | 1985-03-29 | 1985-03-29 | Liquid drain apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61222584A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5493846A (en) * | 1978-01-06 | 1979-07-25 | Manabu Ooba | Sanitary sewage treating device |
| JPS54151565A (en) * | 1978-02-16 | 1979-11-28 | Unitika Ltd | Precise cleaner for liquid |
-
1985
- 1985-03-29 JP JP6332785A patent/JPS61222584A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5493846A (en) * | 1978-01-06 | 1979-07-25 | Manabu Ooba | Sanitary sewage treating device |
| JPS54151565A (en) * | 1978-02-16 | 1979-11-28 | Unitika Ltd | Precise cleaner for liquid |
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