JPS6322867B2 - - Google Patents
Info
- Publication number
- JPS6322867B2 JPS6322867B2 JP55055851A JP5585180A JPS6322867B2 JP S6322867 B2 JPS6322867 B2 JP S6322867B2 JP 55055851 A JP55055851 A JP 55055851A JP 5585180 A JP5585180 A JP 5585180A JP S6322867 B2 JPS6322867 B2 JP S6322867B2
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- drum
- sewage
- dewatering drum
- rotary
- 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
- 239000010802 sludge Substances 0.000 claims description 70
- 239000010865 sewage Substances 0.000 claims description 27
- 238000005273 aeration Methods 0.000 claims description 17
- 230000018044 dehydration Effects 0.000 claims description 12
- 238000006297 dehydration reaction Methods 0.000 claims description 12
- 238000005192 partition Methods 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 29
- 238000007790 scraping Methods 0.000 description 14
- 238000004140 cleaning Methods 0.000 description 9
- 239000007787 solid Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 7
- 238000000926 separation method Methods 0.000 description 6
- 230000003750 conditioning effect Effects 0.000 description 5
- 239000002351 wastewater Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Landscapes
- Centrifugal Separators (AREA)
- Treatment Of Sludge (AREA)
Description
【発明の詳細な説明】
本発明は、浄化槽の汚泥脱水分離装置に関する
もので、その要旨は、曝気槽Ｃ内の汚水を吸入
し、回転脱水ドラム２内に汚水を吹き付ける汚水
供給ノズル３と、天井面４に穿設された脱水孔５
及び底部６に穿孔された汚泥排出孔７とを有し、
天井面４と側壁２２の内隅が側壁２２から天井面
４に向けて傾斜する傾斜面３４となつた回転脱水
ドラム２と、回転脱水ドラム２内に配設される先
端の刃先部１９が回転脱水ドラム２の内壁面に対
して近接離反自在に駆動される掻き落し羽根９
と、回転脱水ドラム２の下方に配設され上記汚泥
排出孔７に上下で対応する位置にて汚泥落下孔２
５が穿孔され曝気槽ｃに連通する落し口２８が設
けられた仕切板２４と、仕切板２４の汚泥落下孔
２５上に開閉自在に配設される傘蓋２６とで構成
されることを特徴とする浄化槽の汚泥脱水分離装
置にある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sludge dewatering separation device for a septic tank. Dewatering hole 5 drilled in the ceiling surface 4
and a sludge discharge hole 7 bored in the bottom 6,
The rotary dewatering drum 2 has an inclined surface 34 in which the inner corners of the ceiling surface 4 and the side wall 22 are inclined from the side wall 22 toward the ceiling surface 4, and the cutting edge portion 19 at the tip disposed inside the rotary dewatering drum 2 rotates. A scraping blade 9 that is driven to move toward and away from the inner wall surface of the dewatering drum 2
A sludge drop hole 2 is provided below the rotary dewatering drum 2 and is located at a position vertically corresponding to the sludge discharge hole 7.
5 is perforated and is provided with a drop port 28 communicating with the aeration tank c, and an umbrella cover 26 is disposed over the sludge drop hole 25 of the partition plate 24 so as to be openable and closable. It is located in the sludge dewatering and separation equipment of the septic tank.
従来の汚泥脱水分離装置にあつては、回転脱水
ドラムの内周壁に附着積層した固形物と分離液体
は共に下部より排出され、その結果粘着性のとぼ
しい固形物（汚泥，砂等）の場合、固形物が分離
液体で洗われ、脱水率及び固形物の排出収量が著
しく低下するという欠点があつた。また回転脱水
ドラムの天井面と側壁との内隅は直角になつてい
て脱水時に分離液体がこの内隅部に溜り、この内
隅に溜つた水を吸収排出する排水装置を必要とす
るという欠点があつた。（この水を吸収排出しな
いと回転脱水ドラムを停止した時にこの水が積層
した固形物に吸収され、固形物の凝集力が弱まり
剥離脱落するもので、この剥離脱落防止のために
内隅に溜つた水を吸収排水する必要がある。）
本発明は、かかる現状に鑑みてなされたもの
で、その目的とするところは、汚水を効率よく汚
泥と分離液とに遠心分離できる浄化槽の汚泥脱水
分離装置を提供するにある。 In conventional sludge dewatering and separation equipment, the solid matter and the separated liquid that have accumulated on the inner peripheral wall of the rotating dehydration drum are both discharged from the bottom, and as a result, in the case of less sticky solid matter (sludge, sand, etc.), The disadvantage was that the solids were washed with the separating liquid, which significantly reduced the dewatering rate and the solids discharge yield. Another drawback is that the inner corners of the rotary dewatering drum's ceiling and side walls are at right angles, and separated liquid accumulates in these inner corners during dewatering, requiring a drainage device to absorb and drain the water accumulated in these inner corners. It was hot. (If this water is not absorbed and drained, when the rotating dehydration drum is stopped, this water will be absorbed by the stacked solids, weakening the cohesive force of the solids and causing them to flake off. (It is necessary to absorb and drain ivy water.) The present invention was made in view of the current situation, and its purpose is to perform sludge dewatering in a septic tank that can efficiently centrifuge sewage into sludge and separated liquid. We are here to provide you with the equipment.
以下、本発明を図示実施例に従つて詳述する。
まず、この浄化槽Ａの概略について説明すると、
この浄化槽Ａは第１図に示すように、汚泥調整装
置Ｂ，曝気槽Ｃ及び沈澱槽Ｄとで構成されてお
り、曝気槽Ｃ内に貯溜された汚水は汚泥調整装置
Ｂに供給されて脱水され、脱水された汚泥８は乾
燥後処理される。また汚泥調整装置Ｂの脱水によ
り放出された水及び脱水作業時に剥離した少量の
汚泥８は曝気槽Ｃに返送されることになる。曝気
槽Ｃの上澄液は沈澱槽Ｄ内に流入して十分な沈澱
を受けたのち、その清澄液が放出されることにな
る。次にこの汚泥調整装置Ｂについて詳述する。
外箱１１の上面中央にはモータ１２を配設してあ
り、軸受１３に支持された回転軸１４がモータ１
２より垂設してある。回転脱水ドラム２は略円筒
状のものである。この回転脱水ドラム２について
詳述すれば、天井面４の中央が下方に凹曲してあ
つて円筒凹曲部１５となつており、この円筒凹曲
部１５の底部中央に回転軸取付孔１６を穿設して
あつて円筒凹曲部４５内に収納された回転軸１４
に円筒凹曲部１５が固着されている。また、天井
面４には多数の脱水孔５を穿孔してあり、底面６
ａの中央には汚泥排出孔７を穿孔してある。ま
た、この底面６ａは汚泥排出孔７に向けて下り傾
斜に形成してある。次にこれらの寸法関係の一実
施例について説明すれば、Ｌ＝300〓mm L1＝190〓
mm L2＝120〓mm L3＝180〓mm E1＝240mm E2＝
60mm E3＝45゜の寸法ドラムであれば回転数を
2000r.p.m以上にすればよい。なお、脱水孔５は
100cm2以上必要であり、形状は丸形，角形，小判
形，開放形のいずれであつてもよい。E3の角度
は０〜60゜まで可能で回転数によつては底面６ａ
はなくてもよい。汚水供給ノズル３の一端は曝気
槽Ｃ内の底部に浸漬されており、他端は汚泥排出
孔７を通つて回転脱水ドラム２内に挿入してあ
る。この汚水供給ノズル３の他端、即ち汚水噴出
ノズル部１８のノズル位置は回転脱水ドラム２の
下方に配設されており、掻き落し時に汚泥が付着
しないように配慮してある。また、汚水の種類及
び噴出圧，噴出量によりE4の角度は０〜80゜にす
る。又、掻き落し処理時汚泥が落ちてきて汚水噴
出ノズル部や配管に付着するので汚泥が落ちて来
ない範囲に配置する。（即ち、E5の範囲に配置す
る。）また、この汚泥供給ノズル３には揚水ポン
プＰ及び揚水バルブ３０を設けてある。さらにこ
の揚水ポンプＰと揚水バルブ３０との間に洗浄パ
イプ３１を接続してあり、この洗浄パイプ３１に
洗浄バルブ３２を設けてある。掻き落し羽根９の
横断面形状は第６図に示すように回転脱水ドラム
２の回転方向に膨れた弧状をしており、円筒凹曲
部１５に近接した掻き落し羽根９の一側縁を回動
自在に枢支してあり、掻き落し羽根９の他側縁、
即ち刃先部１９は凹凸形，鋸刃形，平形又は波形
にしてある。また、掻き落し羽根９からレバー２
０を引出してあり、このレバー２０に駆動装置２
１が取付けてあり、レバー２０を介して掻き落し
羽根９を回動させることができるものである。こ
の駆動装置２１は図示のようにシリンダでもよい
し、その他ねじのようなものでもよい。また、第
３図に示すように回転脱水ドラム２の側壁２２と
天井面４との内隅全周に断面略三角形状の充填部
２３を配設してあり、内隅に水が溜らないように
してある。ここで３４は側壁２２から天井面４側
に傾斜せる傾斜面である。外箱１１の下方には仕
切板２４を配設してあり、汚泥排出孔７の直下に
汚泥落下孔２５を穿設してある。さらにこの汚泥
落下孔２５には屋根型のスライド自在な傘蓋２６
を被嵌してある。さらにこの仕切板２４の下方は
汚泥収納箱１０用の収納室２７となつている。ま
た仕切板２４には落し口２８が設けられており、
落し口２８より導出された返水パイプ２９が曝気
槽Ｃ内に引き込まれている。しかしてモータ１２
起動により軸受１３を介しバランスのとれた回転
脱水ドラム２を回転させる。正規回転になれば揚
水ポンプＰにより曝気槽Ｃ内の汚水を吸引し、汚
水噴出ノズル部１８より回転脱水ドラム２の内壁
に所定の供給量で汚水を噴出させる。噴出された
汚水は比重差により遠心分離が行われ、重い比重
の固型分汚泥８は回転脱水ドラム２の内周壁側に
集まつて附着積層する。一方比重の軽い水は汚泥
よりも内周壁から遠い中心部に集まり回転脱水ド
ラム２の脱水孔５より放出して矢印Ｈの方向に排
出される。排出された水は回転脱水ドラム２と外
箱１１との間において構成された排水路３３を通
つて底部６に設けられた落し口２８に導かれ、返
水パイプ２９を通つて曝気槽Ｃへ返送される。回
転脱水ドラム２の内周壁に附着積層した汚泥８は
遠心分離が進行するにつれて量を増し、所定量に
達する。汚泥８が所定量に達したことを検知した
ら揚水ポンプＰを止め、汚水噴出ノズル部１８か
らの汚水の供給を止める。揚水ポンプＰを止めた
後、回転脱水ドラム２は定常回転のまま運転続行
して回転脱水ドラム２内の残水を排出する。この
時回転脱水ドラム２の内隅部分に充填部２３を配
設してあるため、内隅部分に水が溜ることがな
く、全ての水が円滑に排出される。次に傘蓋２６
を外し、収納室２７内に汚泥収納箱１０を配置
し、掻き落し羽根９のレバー２０を操作して掻き
落し羽根９の刃先部１９を順次回転脱水ドラム２
の内壁に押し付け、積層汚泥８をはがしていく。
はがされた汚泥８は汚泥排出孔７を通り、汚泥収
納箱１０へ落される。然るのちこの汚泥８は乾燥
して処理される。このように汚泥８の処理が終了
すると、傘蓋２６を摺動させて汚泥落下孔２５を
被嵌する。そして、前述の通り回転脱水ドラム２
を回転し、汚水の供給を再開する。この時傘蓋２
６は屋根形であるため、回転脱水ドラム２の回転
数が正規回転数以外の時及び汚水に汚泥８以外の
異物が混入している時に汚泥８及び水が所定通り
分離できない場合に汚泥排出孔７から流出した汚
水が落し口２８から曝気槽Ｃに効果的に返送でき
るものである。また、汚泥調整装置Ｂ内を洗浄す
る場合について説明すると、傘蓋２６を摺動させ
て汚泥落下孔２５を被嵌し、次いで洗浄バルブ３
２を開き、且つ揚水ポンプＰを駆動し、洗浄水を
供給し、回転脱水ドラム２及び外箱１１の内面を
掃除する。（掃除をしないと揚水ポンプＰ，汚水
噴出ノズル部１８，回転脱水ドラム２，落し口２
８及び返水パイプ２９が詰り、揚水ポンプＰやモ
ータ１２の起動負荷が増える。）掃除が終れば洗
浄水を止め、揚水ポンプを止め、洗浄バルブ３２
を締め、次いで揚水バルブ３０を開き、モータ１
２のスイツチを切り、洗浄を完了する。また、連
続運転時は問題ないが、停止時間が長いと汚泥８
が乾燥し、揚水ポンプＰの羽根や汚水噴出ノズル
部１８の先端口や回転脱水ドラム２内周壁や落し
口２８や返水パイプ２９内等に付着してつまりや
故障及びモータ１２の起動負荷が増す。そのた
め、運転中止期間が長期間にわたつた時には運動
再開に先立つて洗浄バルブ３２を開いて汚泥調整
装置Ｂ内を洗浄する。 The present invention will be described in detail below with reference to illustrated embodiments.
First, I will explain the outline of this septic tank A.
As shown in Figure 1, this septic tank A is composed of a sludge conditioning device B, an aeration tank C, and a settling tank D, and the sewage stored in the aeration tank C is supplied to the sludge conditioning device B and dehydrated. The dewatered sludge 8 is treated after drying. Further, water released by dewatering in the sludge conditioning device B and a small amount of sludge 8 separated during the dewatering operation will be returned to the aeration tank C. The supernatant liquid in the aeration tank C flows into the settling tank D, and after receiving sufficient precipitation, the clear liquid is discharged. Next, this sludge conditioning device B will be explained in detail.
A motor 12 is disposed at the center of the upper surface of the outer box 11, and a rotating shaft 14 supported by a bearing 13 is connected to the motor 1.
It is installed vertically from 2. The rotary dewatering drum 2 has a substantially cylindrical shape. To explain this rotary dewatering drum 2 in detail, the center of the ceiling surface 4 is concavely curved downward to form a cylindrical concave curved section 15, and a rotary shaft mounting hole 16 is provided at the center of the bottom of this cylindrical concave curved section 15. The rotating shaft 14 is bored and housed in the cylindrical concave portion 45.
A cylindrical concave portion 15 is fixed to the cylindrical concave portion 15. In addition, a large number of dehydration holes 5 are bored in the ceiling surface 4, and the bottom surface 6
A sludge discharge hole 7 is bored in the center of a. Further, this bottom surface 6a is formed to be inclined downward toward the sludge discharge hole 7. Next, to explain an example of these dimensional relationships, L = 300〓mm L 1 = 190〓
mm L 2 = 120〓mm L 3 = 180〓mm E 1 = 240mm E 2 =
If the dimension drum is 60mm E 3 = 45°, the number of revolutions should be
The speed should be 2000r.pm or higher. In addition, the dehydration hole 5 is
A minimum of 100 cm 2 is required, and the shape may be round, square, oval, or open. The angle of E 3 can be from 0 to 60 degrees, and depending on the rotation speed, the angle of the bottom surface 6a
It doesn't have to be there. One end of the sewage supply nozzle 3 is immersed in the bottom of the aeration tank C, and the other end is inserted into the rotary dewatering drum 2 through the sludge discharge hole 7. The other end of the sewage supply nozzle 3, that is, the nozzle position of the sewage spouting nozzle section 18, is disposed below the rotary dewatering drum 2 to prevent sludge from adhering to it during scraping. In addition, the angle of E4 should be set at 0 to 80 degrees depending on the type of wastewater, jetting pressure, and jetting amount. Also, since sludge falls during the scraping process and adheres to the sewage jet nozzle and piping, it should be placed in an area where sludge will not fall. (That is, it is arranged in the range of E5 .) Furthermore, this sludge supply nozzle 3 is provided with a pump P and a pump valve 30. Further, a cleaning pipe 31 is connected between the pump P and the pumping valve 30, and the cleaning pipe 31 is provided with a cleaning valve 32. As shown in FIG. 6, the cross-sectional shape of the scraping blade 9 has an arc shape that swells in the rotational direction of the rotary dewatering drum 2, and one side edge of the scraping blade 9 adjacent to the cylindrical concave curved portion 15 is rotated. The other side edge of the scraping blade 9 is movably supported;
That is, the cutting edge portion 19 has an uneven shape, a saw blade shape, a flat shape, or a wave shape. Also, from the scraping blade 9 to the lever 2
0 is pulled out, and the drive device 2 is connected to this lever 20.
1 is attached, and the scraping blade 9 can be rotated via a lever 20. This drive device 21 may be a cylinder as shown in the figure, or may be of some other type such as a screw. Further, as shown in FIG. 3, a filling portion 23 having a substantially triangular cross section is provided around the entire inner corner of the side wall 22 and ceiling surface 4 of the rotary dewatering drum 2 to prevent water from accumulating in the inner corner. It is set as. Here, 34 is an inclined surface inclined from the side wall 22 toward the ceiling surface 4. A partition plate 24 is provided below the outer box 11, and a sludge fall hole 25 is bored directly below the sludge discharge hole 7. Furthermore, this sludge fall hole 25 has a roof-shaped umbrella cover 26 that can be freely slid.
is fitted. Further, below the partition plate 24 is a storage chamber 27 for the sludge storage box 10. Further, the partition plate 24 is provided with a droplet 28,
A water return pipe 29 led out from the drop port 28 is drawn into the aeration tank C. However, motor 12
Upon activation, the balanced rotary dewatering drum 2 is rotated via the bearing 13. When the rotation is normal, the sewage pump P sucks the sewage in the aeration tank C, and the sewage is ejected from the sewage jetting nozzle part 18 onto the inner wall of the rotary dewatering drum 2 at a predetermined amount. The ejected sewage is centrifuged due to the difference in specific gravity, and solid sludge 8 with a heavy specific gravity collects on the inner circumferential wall side of the rotary dewatering drum 2 and is deposited in layers. On the other hand, water with a lighter specific gravity collects at the center farther from the inner circumferential wall than the sludge and is discharged from the dewatering holes 5 of the rotary dewatering drum 2 in the direction of arrow H. The discharged water passes through a drainage channel 33 constructed between the rotary dewatering drum 2 and the outer box 11, is led to a droplet 28 provided at the bottom 6, and passes through a return pipe 29 to an aeration tank C. It will be sent back. As the centrifugal separation progresses, the amount of sludge 8 deposited and stacked on the inner peripheral wall of the rotary dewatering drum 2 increases and reaches a predetermined amount. When it is detected that the sludge 8 has reached a predetermined amount, the pump P is stopped, and the supply of sewage from the sewage jetting nozzle section 18 is stopped. After the pump P is stopped, the rotary dewatering drum 2 continues to operate in steady rotation to discharge the remaining water in the rotary dewatering drum 2. At this time, since the filling portion 23 is provided at the inner corner of the rotary dewatering drum 2, water does not accumulate in the inner corner, and all water is smoothly discharged. Next, the umbrella lid 26
, place the sludge storage box 10 in the storage chamber 27 , and operate the lever 20 of the scraping blade 9 to rotate the blade edge 19 of the scraping blade 9 sequentially to the rotating dewatering drum 2 .
, and peel off the laminated sludge 8.
The stripped sludge 8 passes through the sludge discharge hole 7 and is dropped into the sludge storage box 10. Afterwards, this sludge 8 is dried and treated. When the treatment of the sludge 8 is completed in this manner, the umbrella cover 26 is slid to fit into the sludge fall hole 25. Then, as mentioned above, the rotary dewatering drum 2
rotate and restart the wastewater supply. At this time, umbrella lid 2
6 is roof-shaped, so when the rotation speed of the rotary dewatering drum 2 is other than the normal rotation speed, or when foreign matter other than sludge 8 is mixed in the sewage, the sludge discharge hole can be opened if the sludge 8 and water cannot be separated as specified. The sewage water flowing out from the tank 7 can be effectively returned to the aeration tank C through the drop port 28. Also, to explain the case of cleaning the inside of the sludge adjustment device B, the umbrella cover 26 is slid to fit the sludge fall hole 25, and then the cleaning valve 3
2 is opened, and the pump P is driven to supply cleaning water and clean the inner surfaces of the rotary dewatering drum 2 and the outer box 11. (If you do not clean the water pump P, sewage spout nozzle part 18, rotary dewatering drum 2, and droplet 2)
8 and the water return pipe 29 are clogged, and the starting load on the pump P and the motor 12 increases. ) When cleaning is finished, stop the washing water, stop the water pump, and close the washing valve 32.
, then open the pumping valve 30 and turn the motor 1
Turn off the switch 2 and complete the cleaning. In addition, there is no problem during continuous operation, but if the stop time is long, sludge 8
dries and adheres to the blades of the pump P, the tip of the sewage jet nozzle 18, the inner peripheral wall of the rotary dewatering drum 2, the drop opening 28, the water return pipe 29, etc., resulting in clogging, malfunction, and the starting load of the motor 12. Increase. Therefore, when the operation is stopped for a long period of time, the cleaning valve 32 is opened to clean the inside of the sludge conditioning device B before restarting the movement.
本発明は、叙上のように、曝気槽内の汚水を吸
入し、回転脱水ドラム内に汚水を吹き付ける汚水
供給ノズルと、天井面に穿設された脱水孔と底部
に穿孔された汚泥排出孔とを持つ回転脱水ドラム
とで構成されているので、分離された水を天井面
の脱水孔から排出でき、水と汚泥の排出口が分離
されて汚泥中に分離液が再吸収されず、汚泥中の
含水率を低下させることができるという利点があ
る。（従来例であれば含水率は85％以下にならな
いが、本発明では85％以下にすることができる。）
従つて汚泥の収量を約15％向上させることができ
るものである。さらに回転脱水ドラムの天井面と
側壁の内隅全周にわたつて充填部を配設し、側壁
から天井面に向けて傾斜する傾斜面を内隅部に設
けてあるので、分離された水は内隅部に溜ること
なく傾斜面を通つて全て外部に流れてしまい、従
来のように内隅に溜つた水を吸収排出する吸水装
置を必要としないものであり、また刃先部が回転
脱水ドラムの内壁面に対して近接離反自在となる
よう掻き落し羽根を駆動するようにしてあるの
で、回転脱水ドラムの内壁に付着した汚泥を掻き
落すにあたつて、回転脱水ドラムを回転しつつ掻
き落し羽根の刃先部を徐々に回転脱水ドラムの内
壁方向へ移動させて押し付けていくようにするこ
とができ、従つて付着汚泥のうち水分の遠心分離
が進行して最も水分量が少なくなつている表面側
から順次掻き落すことができることになり、水分
と汚泥とをより良好に分離した状態で汚泥を排出
することができるものである。 As described above, the present invention includes a sewage supply nozzle that sucks sewage in an aeration tank and sprays the sewage into a rotating dehydration drum, a dehydration hole drilled in the ceiling surface, and a sludge discharge hole drilled in the bottom. Since it is composed of a rotating dehydration drum with It has the advantage of being able to reduce the moisture content inside. (In the conventional case, the water content does not fall below 85%, but with the present invention, it can be reduced to below 85%.)
Therefore, the yield of sludge can be improved by about 15%. Furthermore, a filling section is provided around the entire inner corner of the ceiling and side walls of the rotary dewatering drum, and an inclined surface that slopes from the side wall toward the ceiling is provided at the inner corner, so that the separated water is All of the water flows to the outside through the sloped surface without collecting in the inner corner, and there is no need for a water absorption device to absorb and discharge the water collected in the inner corner, as in the case of conventional methods. Since the scraping blades are driven so that they can freely approach and leave the inner wall surface of the rotary dewatering drum, when scraping off the sludge adhering to the inner wall of the rotary dewatering drum, it is scraped off while rotating the rotary dewatering drum. The cutting edge of the blade can be gradually moved toward the inner wall of the rotating dewatering drum and pressed against it, and the surface of the adhering sludge where the centrifugal separation of water has progressed and has the lowest water content. This means that the sludge can be scraped off sequentially from the side, and the sludge can be discharged in a state where water and sludge are better separated.
また、回転脱水ドラムの下方に配設され回転脱
水ドラムの汚泥排出孔に上下で対応する位置にて
汚泥落下孔が穿孔され曝気槽に連通する落し口が
設けられた仕切板と、仕切板の汚泥落下孔上に開
閉自在に配設される傘蓋とを具備したので、回転
脱水ドラムの天井面より分離排出した水分を仕切
板で受けて落し口より曝気槽に返送して再度曝気
処理を行なえると共に回転脱水ドラムの内周に沈
殿した固形汚泥は回転ドラムの汚泥排出孔から汚
泥落下孔を通して汚水と分離した状態で回収する
ことができるものであり、しかも汚水供給ノズル
より汚水を回転脱水ドラム内に供給して固液分離
を行なつている際には傘蓋で仕切板の汚泥落下孔
を閉塞していることができ、回転脱水ドラムの回
転数が正規回転数以外の時などにおいて、回転脱
水ドラムの汚泥排出孔から汚水が下方へ流下して
も、この未分離汚水は傘蓋によつて汚泥落下孔か
ら排出されてしまうようなおそれなく落し口から
曝気槽内に返送することができるものである。 In addition, a partition plate is provided below the rotary dewatering drum, and has sludge drop holes drilled at positions corresponding to the sludge discharge holes of the rotary dewatering drum above and below, and a droplet communicating with the aeration tank. Equipped with an umbrella cover that can be opened and closed over the sludge drop hole, the water separated and discharged from the ceiling of the rotating dehydration drum is collected by the partition plate and returned to the aeration tank through the drop port, where it is aerated again. At the same time, the solid sludge that has settled on the inner periphery of the rotary dewatering drum can be recovered separately from wastewater through the sludge discharge hole of the rotary drum and the sludge fall hole, and the sewage can be removed from the rotary dehydrator from the sewage supply nozzle. When solid-liquid separation is being carried out by feeding into the drum, the sludge falling hole in the partition plate can be blocked with an umbrella lid, so that when the rotation speed of the rotary dehydration drum is not the normal rotation speed, etc. Even if sewage flows downward from the sludge discharge hole of the rotating dewatering drum, this unseparated sewage can be returned to the aeration tank from the drop opening without fear of being discharged from the sludge drop hole by the umbrella cover. It is something that can be done.
第１図は本発明の一実施例のブロツク図、第２
図は本発明の一実施例の概略縦断面図、第３図は
同上の回転脱水ドラム部分の縦断面図、第４図は
同上の第３図に示すＸ―Ｘ断面図、第５図イ〜ニ
は同上の掻き落し羽根の第１乃至第４実施態様を
示す斜視図で、２は回転脱水ドラム、３は汚水供
給ノズル、４は天井面、５は脱水孔、６は底部、
７は汚泥排出孔、８は汚泥、９は掻き落し羽根、
１９は刃先部、２２は側壁、２３は充填部、２４
は仕切板、２５は汚泥落下孔、２６は傘蓋、３４
は充填部の傾斜面、Ｃは曝気槽である。
FIG. 1 is a block diagram of one embodiment of the present invention, and FIG.
The figure is a schematic vertical cross-sectional view of one embodiment of the present invention, FIG. 3 is a vertical cross-sectional view of the rotary dewatering drum portion of the same as above, FIG. - D are perspective views showing the first to fourth embodiments of the same scraping blade as above, 2 is a rotating dehydration drum, 3 is a waste water supply nozzle, 4 is a ceiling surface, 5 is a dewatering hole, 6 is a bottom part,
7 is a sludge discharge hole, 8 is a sludge, 9 is a scraping blade,
19 is a cutting edge portion, 22 is a side wall, 23 is a filling portion, 24
is a partition plate, 25 is a sludge fall hole, 26 is an umbrella cover, 34
C is the inclined surface of the filling part, and C is the aeration tank.
Claims (1)
に汚水を吹き付ける汚水供給ノズルと、天井面に
穿設された脱水孔及び底部に穿孔された汚泥排出
孔とを有し、天井面と側壁の内隅が側壁から天井
面に向けて傾斜する傾斜面となつた回転脱水ドラ
ムと、回転脱水ドラム内に配設され先端の刃先部
が回転脱水ドラムの内壁面に対して近接離反自在
に駆動される掻き落し羽根と、回転脱水ドラムの
下方に配設され上記汚泥排出孔に上下で対応する
位置にて汚泥落下孔が穿孔され曝気槽に挿通する
落し口が設けられた仕切板と、仕切板の汚泥落下
孔上に開閉自在に配設される傘蓋とで構成される
ことを特徴とする浄化槽の汚泥脱水分離装置。1 It has a sewage supply nozzle that sucks sewage in the aeration tank and sprays the sewage into the rotating dehydration drum, a dehydration hole drilled in the ceiling surface, and a sludge discharge hole drilled in the bottom, and the ceiling surface and side wall A rotary dewatering drum whose inner corner is an inclined surface that slopes from the side wall toward the ceiling surface, and a cutting edge disposed inside the rotary dewatering drum so that the cutting edge at the tip can be driven toward and away from the inner wall surface of the rotary dewatering drum. a partition plate disposed below the rotating dewatering drum and provided with sludge drop holes at positions corresponding to the sludge discharge holes above and below and a drop opening inserted into the aeration tank; A sludge dewatering and separating device for a septic tank, characterized by comprising an umbrella cover that is openable and closable over a sludge drop hole in a plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5585180A JPS56152753A (en) | 1980-04-25 | 1980-04-25 | Sludge dehydrating and separating device for purification tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5585180A JPS56152753A (en) | 1980-04-25 | 1980-04-25 | Sludge dehydrating and separating device for purification tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56152753A JPS56152753A (en) | 1981-11-26 |
| JPS6322867B2 true JPS6322867B2 (en) | 1988-05-13 |
Family
ID=13010538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5585180A Granted JPS56152753A (en) | 1980-04-25 | 1980-04-25 | Sludge dehydrating and separating device for purification tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56152753A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2671985B1 (en) * | 1991-01-30 | 1993-04-09 | Snecma | CENTRIFUGAL OIL FILTER WITH PARTICLE COLLECTION. |
| DE4244840C2 (en) * | 1991-11-19 | 2002-11-14 | Daiyo Kiko Industry Inc | Separation device for fluid media, in particular for the treatment of sludge and / or waste water |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50459A (en) * | 1973-05-09 | 1975-01-07 |
-
1980
- 1980-04-25 JP JP5585180A patent/JPS56152753A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50459A (en) * | 1973-05-09 | 1975-01-07 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56152753A (en) | 1981-11-26 |
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