JPH0462000A - Method and apparatus for concentrating slurry - Google Patents
Method and apparatus for concentrating slurryInfo
- Publication number
- JPH0462000A JPH0462000A JP2166782A JP16678290A JPH0462000A JP H0462000 A JPH0462000 A JP H0462000A JP 2166782 A JP2166782 A JP 2166782A JP 16678290 A JP16678290 A JP 16678290A JP H0462000 A JPH0462000 A JP H0462000A
- Authority
- JP
- Japan
- Prior art keywords
- slurry
- tank
- sedimentation
- small
- discharge
- 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
- 239000002002 slurry Substances 0.000 title claims abstract description 107
- 238000000034 method Methods 0.000 title claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000004062 sedimentation Methods 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 3
- 238000005054 agglomeration Methods 0.000 claims description 5
- 239000002351 wastewater Substances 0.000 claims description 5
- 239000010802 sludge Substances 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 3
- 239000002699 waste material Substances 0.000 claims description 3
- 238000005345 coagulation Methods 0.000 claims description 2
- 230000015271 coagulation Effects 0.000 claims description 2
- 239000012141 concentrate Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000012546 transfer Methods 0.000 abstract description 5
- 238000000926 separation method Methods 0.000 abstract description 4
- 230000018044 dehydration Effects 0.000 abstract description 2
- 238000006297 dehydration reaction Methods 0.000 abstract description 2
- 238000005189 flocculation Methods 0.000 abstract 2
- 230000016615 flocculation Effects 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 8
- 230000007423 decrease Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
- 239000010419 fine particle Substances 0.000 description 3
- 230000008719 thickening Effects 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000003311 flocculating effect Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 244000144992 flock Species 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、凝集沈澱方式による水処理設備において、凝
集沈澱槽（以下性ｔｊ、Ｗ！と略ず）の底部から抜き出
されたスラリーの簡易な濃縮方法および濃縮装置に関す
るものである。[Detailed Description of the Invention] <Industrial Application Field> The present invention is a water treatment facility using a coagulation-sedimentation method, in which slurry extracted from the bottom of a coagulation-sedimentation tank (hereinafter abbreviated as W!) is used. The present invention relates to a simple concentration method and a concentration device.
〈従来の技術〉
凝集沈澱方式による水処理設備において、処理された水
（清澄水）の清澄度は面積負荷／沈殿槽表面積、懸濁粒
子の沈降速度などに左右されることが知られている。こ
こで沈降速度は、粒子の比重、粒子径が大きい程速く、
懸濁液の濃度が低いと速い。<Prior art> In water treatment equipment using the coagulation-sedimentation method, it is known that the clarity of treated water (clear water) is affected by area load/sedimentation tank surface area, sedimentation rate of suspended particles, etc. . Here, the sedimentation speed is faster as the specific gravity and particle size of the particles are larger.
The lower the concentration of the suspension, the faster it is.
凝集沈澱方式による水処理の一般的方法として第３図の
方法がある。The method shown in Figure 3 is a common method of water treatment using the coagulation-sedimentation method.
第３図において、１０ａは汚水・廃液等の固体物質の懸
濁水、２、Ｉはｐｌ＋調整槽とこの楢に添加される調整
液、３．４は凝集剤混和槽とこの槽に添加される凝集剤
、５はフロック形成槽、６は凝集沈澱槽でこの沈澱槽の
上端部にはこの槽からオーバーフローした清澄水ｔａｂ
を集めて排水するオーバーフロー水集水トラフ７が設け
られている。沈澱槽６の底部はコーン部６ａとなってお
りその最低部のスラリー排出口６ｂから抜き出されたス
ラリー２０ａが、スラリー移送ポンプ９を介して脱水機
１５に送られスラリーが脱水されて脱水ケーキとなり次
処理工程に送られる。In Figure 3, 10a is suspension water of solid substances such as sewage and waste liquid, 2, I is the PL + adjustment tank and the adjustment liquid added to this oak, and 3.4 is the flocculant mixing tank and the adjustment liquid added to this tank. 5 is a flocculant, 6 is a flocculating sedimentation tank, and at the upper end of this sedimentation tank there is a tab for clear water overflowing from this tank.
An overflow water collection trough 7 is provided to collect and drain overflow water. The bottom of the settling tank 6 is a cone portion 6a, and the slurry 20a extracted from the slurry discharge port 6b at the lowest portion is sent to the dehydrator 15 via the slurry transfer pump 9, where the slurry is dehydrated to form a dehydrated cake. Then, it is sent to the next processing step.
このような凝集沈澱方法で汚水を処理する場合、懸濁水
中の粒子比重と液比型の差が小さく、かつ粒子径が小さ
い微粉石炭等は沈降速度が遅いため清澄水１０ｂの清澄
度が悪くなる。When treating wastewater using such a coagulation-sedimentation method, the difference between the particle specific gravity and liquid ratio type in the suspended water is small, and pulverized coal, etc., which has a small particle size, has a slow settling speed, so the clarity of the clear water 10b is poor. Become.
これらの対応方法として、■沈澱槽を大きくして滞留時
間を長くとる、■傾斜板などを増設して面積負荷を小さ
くする、■沈澱槽の水深を大きくしスラリーの高濃度領
域を下げる、■沈澱槽の底部よりのスラリー抜き出し量
を増して、沈澱槽内のスラリー濃度を下げて粒子が沈降
しやすいようにする、などの方法が従来から一般常識と
なっている。Measures to address these issues include: ■ Enlarging the sedimentation tank to increase residence time; ■ Installing additional inclined plates to reduce the area load; ■ Increasing the water depth of the sedimentation tank to reduce the high concentration area of the slurry; ■ Conventional methods include increasing the amount of slurry extracted from the bottom of the settling tank to lower the slurry concentration in the settling tank to make it easier for particles to settle.
しかしながら、上記■〜■の方法は設備が大型化すると
いう欠点があり、また既設設備の能力アンプには不向き
である。■の方法では沈澱槽６から低濃度スラ’Ｊ−２
０ａを多（抜くために後続設備の脱水機の能力が低下し
、脱水ケーキの水分上昇がある。微粒の低濃度スラリー
は特にその傾向が著しい。However, the above methods (1) to (3) have the disadvantage of increasing the size of the equipment, and are not suitable for the capacity amplifier of existing equipment. In the method of
In order to remove a large amount of 0a, the capacity of the dehydrator in the subsequent equipment decreases, causing an increase in the moisture content of the dehydrated cake. This tendency is particularly noticeable in the case of fine-grained, low-concentration slurry.
そこで第４図に示すように、沈澱槽６からの低濃度スラ
リー２０ａの抜き出し量を多くする方法として、スラリ
ー濃縮槽８を設置するのが一般的方法であるがスラリー
濃縮槽が大型化するという欠点がある。Therefore, as shown in Fig. 4, a common method to increase the amount of low-concentration slurry 20a extracted from the settling tank 6 is to install a slurry thickening tank 8, but the slurry thickening tank becomes larger. There are drawbacks.
第５図ではまた混和槽で凝集剤を添加し、ブロク形成槽
５で微粒子をフロック化して成長させ沈澱槽６での沈降
を速くする。抜き出した低濃度スラリー２０ａは、脱水
機１５へ投入李る前にスラリー移送ポンプ９を経由する
とフロックが壊れ、脱水機１５の脱水能力低下になる。In FIG. 5, a flocculant is also added in the mixing tank, and the fine particles are floc-formed and grown in the block forming tank 5, and sedimentation in the settling tank 6 is accelerated. If the extracted low-concentration slurry 20a passes through the slurry transfer pump 9 before being input to the dehydrator 15, the flocs will be broken and the dewatering capacity of the dehydrator 15 will be reduced.
その対策として小容量の再凝集槽１２を設置し、微量の
凝集剤４を添加してフロックを大型化する方法がある。As a countermeasure, there is a method of installing a small-capacity reagglomeration tank 12 and adding a small amount of flocculant 4 to increase the size of the flocs.
この方法では沈澱槽６でのスラリー抜き出し景を増した
場合の低濃度スラリーのｆＡ廣が低下することによる前
記■の方法の問題点の解決にはなっていない。This method does not solve the problem of the method (2) above, which is caused by a decrease in the fA width of the low-concentration slurry when the slurry extraction angle in the settling tank 6 is increased.
〈発明が解決しようとする課題〉
前記のように従来の方法では沈澱槽が大きくなり、また
沈澱槽からのスラリーの抜き出し量を増すとスラリー濃
度が低下し、脱水機の能力が低下し処理量低下、ケーキ
の含水率の上昇などの問題があった。<Problems to be Solved by the Invention> As mentioned above, in the conventional method, the size of the settling tank increases, and when the amount of slurry extracted from the settling tank increases, the slurry concentration decreases, and the capacity of the dehydrator decreases, reducing the throughput. There were problems such as a decrease in the moisture content of the cake and an increase in the moisture content of the cake.
本発明は、このような前記問題を解消し、小型濃縮槽を
設けることによって、簡易にスラリーの濃縮を行う方法
とその装置を擢供するためになされたものである。The present invention has been made in order to solve these problems and provide a method and apparatus for easily concentrating slurry by providing a small concentration tank.
〈課題を解決するための手段〉
本発明は、■凝集沈澱方式による廃水・廃液処理設備に
おいて、凝集沈澱槽６の底部から抜き出した低濃度スラ
リー２０ａに再凝集槽１２で凝集剤４を添加してフロッ
クを大型化した後、小型濃縮槽１６において水とスラリ
ーの比重差を利用して沈降させた濃縮スラリーを濃縮槽
下部に連通したＵ字背型スラリー排出管１９の一方の管
に設けられたスラリーの排出液面調整手段１７の出口高
さＨを調整することによって、分離水もしくは希薄スラ
リー１０ｄと濃縮スラリー２０ｃの排出量割合を調整し
て、連続的に分離水１０ｄを排出し、連続的にスラリー
を濃縮して次工程の脱水機１５での処理能力を上げるこ
とを特徴とするスラリーの濃縮方法で、かつ■凝集沈澱
方式の廃水・廃液処理設備の凝集沈澱槽６の底部から脱
水機１５に至るスラリー、スラッヂ、汚泥等固液混合液
の濃縮装置であって、凝集剤４の添加を行ってフロック
を大型化するための再凝集槽１２と、これに続く小型濃
縮槽１６と、この小型濃縮層の底部に一端を連結された
Ｕ字型スラリー排出管１９と、底部にスラリー排出管１
９を具えこのＵ字管の他方の垂直排出管２１の上方に同
心円的に固定された小型スラリー排出槽２２と、前記小
型スラリー排出槽２２の内部まで貫入した前記垂直排出
管２１の前記小型濃縮槽頂部より低い上端部に、これを
取り囲んで上下動摺動可能なように設けられた液面調節
用の摺動管２３とからなる排出液面調節手段１７とから
なるスラリーの濃縮装置である。<Means for Solving the Problems> The present invention is based on (1) a coagulation-sedimentation type wastewater/wastewater treatment facility, in which a flocculant 4 is added to a low-concentration slurry 20a extracted from the bottom of a coagulation-sedimentation tank 6 in a re-agglomeration tank 12; After enlarging the flocs, the concentrated slurry is sedimented in the small concentration tank 16 using the difference in specific gravity between the water and the slurry. By adjusting the outlet height H of the discharge liquid level adjusting means 17 of the slurry, the discharge ratio of the separated water or diluted slurry 10d and the concentrated slurry 20c is adjusted, and the separated water 10d is continuously discharged. A method for concentrating slurry that is characterized by concentrating the slurry to increase the processing capacity of the dehydrator 15 in the next step, and (1) dewatering from the bottom of the coagulation-sedimentation tank 6 of a coagulation-sedimentation type wastewater/waste liquid treatment facility. It is a concentrating device for solid-liquid mixed liquids such as slurry, sludge, and sludge, which reaches the machine 15, and includes a re-agglomerating tank 12 for enlarging flocs by adding a flocculant 4, and a small-sized concentrating tank 16 following this. , a U-shaped slurry discharge pipe 19 connected at one end to the bottom of this small concentrated layer, and a slurry discharge pipe 1 at the bottom.
9 and fixed concentrically above the other vertical discharge pipe 21 of this U-shaped pipe, and the small concentration of the vertical discharge pipe 21 penetrating into the inside of the small slurry discharge tank 22. This is a slurry concentrating device comprising a discharge liquid level adjusting means 17 consisting of a liquid level adjusting sliding pipe 23 provided at an upper end lower than the top of the tank so as to be able to move up and down surrounding it. .
〈本発明をなすに至った経過および作用〉本発明では、
沈澱槽を大きくせずに、沈澱槽からのスラリー抜き出し
量を増加しても脱水機の能力が低下しないように、抜き
出しスラリーの濃縮に用いる小型濃縮槽を設置する方法
を採用した。<Process and operation leading to the present invention> In the present invention,
In order to prevent the capacity of the dehydrator from decreasing even if the amount of slurry extracted from the sedimentation tank was increased without increasing the size of the sedimentation tank, a method was adopted in which a small concentration tank was installed for concentrating the extracted slurry.
本発明者は、石炭微粉スラリーの沈ｒ＆試験をビーカー
で行い、スラリーを凝集後、フロックを壊して再凝集試
験をした結果、つぎの知見を得た。The present inventor conducted a sedimentation r& test on a fine coal powder slurry in a beaker, and after flocculating the slurry, broke the flocs and conducted a reagglomeration test, and as a result, the following findings were obtained.
すなわち、
■ そのまま静置した場合は再凝集はほとんど見られな
い。That is, ■ If the material is left undisturbed, almost no reaggregation is observed.
■ 凝集剤を数−再添加し、ゆるやかに攪拌後静置する
と、再凝集しフロックが成長し沈降速度も速くなりスラ
リーと水の分離が速い。■ When the flocculant is re-added several times and left to stand after gentle stirring, the flocs will re-agglomerate and the flocs will grow, increasing the sedimentation rate and speeding up the separation of the slurry and water.
この知見を基にして、沈澱槽から抜き出したスラリーを
再凝集後、小型濃縮槽に導き簡易的に連続濃縮する本発
明を完成した。Based on this knowledge, the present invention was completed in which the slurry extracted from the settling tank is reagglomerated and then introduced into a small concentration tank for continuous concentration in a simple manner.
ここで、具体的な手段としてはつぎのとおりである。Here, the specific means are as follows.
■ 沈澱槽６での清澄水１０ｂの清澄度をよくするため
に、抜き出しスラリー２０ａの量を多くする。(2) In order to improve the clarity of the clear water 10b in the settling tank 6, increase the amount of the slurry 20a taken out.
■ 抜き出しスラリーの濃度が低下するためスラリーを
濃縮する。■ Concentrate the slurry to reduce its concentration.
■ 濃縮の方法として、小型濃縮槽１６を設置し、フロ
ックと分離した分離水をオーバーフローで連続抜き出し
する（第１図参照）。■ As a method of concentration, a small concentration tank 16 is installed, and the separated water separated from the flocs is continuously extracted by overflow (see Figure 1).
以下に本発明をより詳細に説明する。The present invention will be explained in more detail below.
第１図に示すように、清澄水ＩＯｂの清澄度をよくする
手段として、スラリー抜き出し量を多くし沈澱槽内のス
ラリー濃度を下げる。その方法として再凝集槽１２の後
に小型濃縮槽１６を設置して、沈降分離し分離水１０ｄ
を連続オーバーフローで抜き出す、沈降濃縮した濃縮ス
ラリー２０ｃは小型濃縮槽Ｉ６の底部より脱水機に投入
す番。As shown in FIG. 1, as a means to improve the clarity of clear water IOb, the amount of slurry extracted is increased to lower the slurry concentration in the settling tank. As a method, a small concentration tank 16 is installed after the reagglomeration tank 12, and 10 d of separated water is sedimented and separated.
The concentrated slurry 20c, which has been sedimented and concentrated by continuous overflow, is fed into the dehydrator from the bottom of the small concentration tank I6.
小型濃縮槽１６でのスラリー濃度管理の方法は第２回に
示すように、排出液面調整手段１７の液面調節用摺動管
２３を上下させて、垂直排出管２１からのオーバーフロ
ー高さの境界面を決め、分離水または希薄スラリー１０
６と濃縮スラリー２０ｃの排出量割合を決める。As shown in Part 2, the method for controlling the slurry concentration in the small thickening tank 16 is to adjust the height of the overflow from the vertical discharge pipe 21 by raising and lowering the liquid level adjusting sliding pipe 23 of the discharge liquid level adjusting means 17. Determine the interface and separate water or dilute slurry 10
6 and the discharge rate of the concentrated slurry 20c are determined.
排出スラリー２０ｃの濃度Ｃ２０ｅは、下記（ＩＬ （
２１式から求まる（３）式より５１算される。The concentration C20e of the discharged slurry 20c is as follows (IL (
51 is calculated from equation (3) obtained from equation 21.
Ｑ ２０＋１ Ｑｚａｅ ＝Ｑ＋ｏａＱ ２０
Ｃ
Ｑ ｔ ｏ ｓ Ｑ ＋。。Q20+1 Qzae=Q+oaQ20
C Q t o s Q +. .
ここで、
Ｃ２゜、：流入スラリー濃度
Ｑ ｚｏｓ ：流入スラリー流量
Ｃ２゜Ｃ：排出濃縮スラリー濃度
Ｑ２゜Ｃ：排出濃縮スラリー流量
Ｑ１゜、：排出分離水または希薄スラリー流量ずなわち
、液面調整手段１７により濃縮スラリー２０ｃの排出液
面高さＨを変えることによって、排出濃縮スラリー流量
Ｑｔｌｌｃを調整してやれば排出濃縮スラリー濃度Ｃ２
゜０は流入スラリー流量Ｑ２゜。Here, C2゜: Inflow slurry concentration Q zos: Inflow slurry flow rate C2゜C: Discharge concentrated slurry concentration Q2゜C: Discharge concentrated slurry flow rate Q1゜,: Discharge separated water or dilute slurry flow rate, i.e., liquid level adjustment If the discharge concentrated slurry flow rate Qtllc is adjusted by changing the discharge liquid level H of the concentrated slurry 20c using the means 17, the discharge concentrated slurry concentration C2 can be adjusted.
゜0 is the inflow slurry flow rate Q2゜.
と流入スラリー濃度Ｃ２゜１により一義的に決まってく
る。It is uniquely determined by the inflow slurry concentration C2°1.
小型濃縮槽１６からの濃縮スラリー２０ｃの抜き出し時
の管の閉塞防止のため、抜出管内の流速としては粒子が
沈澱滞留しないような速度になるように管径を選定する
。In order to prevent the tube from clogging when the concentrated slurry 20c is extracted from the small concentration tank 16, the diameter of the tube is selected so that the flow velocity in the extraction tube is such that particles do not settle and accumulate.
〈実施例〉 第１図には本発明に係る装置の実施例を示す。<Example> FIG. 1 shows an embodiment of the device according to the invention.
第２図には第１図で示す小型濃縮槽１６の構造例を示す
。FIG. 2 shows an example of the structure of the small concentration tank 16 shown in FIG. 1.
第１図において、沈澱槽６で沈降分離された低濃度スラ
リー２０ａは、スラリー移送ポンプ９を経由して再凝集
槽１２へ送られ、凝集剤を微量再添加されてフロックを
大型化する。さらに小型濃縮槽１６に送り沈降分離し、
分離水１０ｄ′は上部より連続オーバーフローで抜き出
す；濃縮スラリー２０ｃは底部よりＵ字管を経由しＵ字
管上部の排出液面調整手段１７を経由して脱水８！１５
に送る。In FIG. 1, the low concentration slurry 20a that has been sedimented and separated in the sedimentation tank 6 is sent to the re-agglomeration tank 12 via the slurry transfer pump 9, where a small amount of flocculant is added again to enlarge the flocs. Furthermore, it is sent to a small concentration tank 16 for sedimentation and separation.
Separated water 10d' is extracted from the top by continuous overflow; concentrated slurry 20c is dehydrated from the bottom via the U-shaped pipe and the discharge liquid level adjustment means 17 at the top of the U-shaped pipe 8!15
send to
濃縮スラリーの濃度管理は、液面調整手段１７の摺動管
２３を上下することにより分離水１０ｄとスラリー２０
ｃの流量割合を調整して行う。The concentration of the concentrated slurry can be controlled by moving the sliding pipe 23 of the liquid level adjusting means 17 up and down to separate the separated water 10d and the slurry 20.
This is done by adjusting the flow rate ratio of c.
本発明は、前述のとおり微粒子で、かつ粒子比重と液比
型の差の小さいスラリーを沈澱分離する設備において、
沈澱槽６からの抜き出した低濃度スラリーを小型濃縮槽
１６で、連続的に沈１４１縮して分離水１０ｄを抜き出
すことによって、脱水機１５へ供給する濃縮スラリー２
０ｃの濃度を上げる。その結果、脱水＋１１５の能力を
低下させることがなく、沈澱槽のスラリーを低い濃度で
引き抜くことができ、清澄水］Ｏｂの清澄度がよくなり
処理水量を増加することができる。As mentioned above, the present invention is an equipment for precipitating and separating slurry with fine particles and a small difference between particle specific gravity and liquid ratio type.
A concentrated slurry 2 is supplied to the dehydrator 15 by continuously condensing the low concentration slurry extracted from the settling tank 6 in a small concentration tank 16 and extracting separated water 10d.
Increase the concentration of 0c. As a result, the slurry in the settling tank can be drawn out at a low concentration without reducing the dehydration +115 ability, and the clarity of the clear water] Ob improves, making it possible to increase the amount of treated water.
本発明は、現状設備でスラリー処理量のアップ、微粒子
の増加がある場合などの対応策として、特に有効である
。The present invention is particularly effective as a countermeasure for cases where the amount of slurry throughput is increased or the amount of fine particles is increased with the current equipment.
〈発明の効果〉
本発明によると、沈澱槽から抜き出した低濃度スラリー
が容易に濃縮されるので脱水機の能力を低下することが
ないので、処理水量を増加することができる。<Effects of the Invention> According to the present invention, the low concentration slurry extracted from the settling tank is easily concentrated, so the capacity of the dehydrator is not reduced, and the amount of water to be treated can be increased.
第１図は、本発明を説明するための水処理設備の構成図
、第２図は、本発明に係るスラリーａ線装置の説明図、
第３圀は、従来の凝集沈澱方法を示す構成図、第４図は
、従来のスラリーｆ４ｗ３方法を示す構成図、第５図は
、従来の微粒スラリーの再濃縮方法を示す構成図である
。
■・・・ｐＨ調整液、
３・・・凝集剤混和槽、
５・・・フロック塑成槽、
６ａ・・・コーン部、
６ｂ・・・スラリー排出口、
７・・・スラリー集水トラフ、
８・・・スラリー濃縮槽、
９・・・スラリー移送ポンプ、
１４・・・スラリーポンプ、
１６・・小型濃縮槽、
１７・・・排出液面調整手段、
１８・・・濃縮スラリー排出管、
１９・・・Ｕ字型スラリー排出管、
２・・・ｐｌ＋調整槽、
４・・・凝集剤、
６・・・凝集沈澱槽、
１２・・再凝集槽、
１５・・・脱水機、
２１・・・垂直排出管、
２３・・・摺動管、
２２・・・小型スラリー排出槽、
１０ａ・・・懸濁水、
１０ｃ・・・分離水、
１０ｄ・・・分離水または希薄スラリー２０ａ・・・低
濃度スラリー
２０ｂ・・・濃縮スラリー（１）、
２０ｃ・・・濃縮スラリー（２）、
１０ｂ・・・清澄水、
Ｈ・・・出口高さ。FIG. 1 is a configuration diagram of water treatment equipment for explaining the present invention, FIG. 2 is an explanatory diagram of a slurry A-ray apparatus according to the present invention,
The third panel is a block diagram showing a conventional coagulation-sedimentation method, FIG. 4 is a block diagram showing a conventional slurry f4w3 method, and FIG. 5 is a block diagram showing a conventional fine slurry reconcentration method. ■...pH adjustment liquid, 3...flocculant mixing tank, 5...flock plasticizing tank, 6a...cone part, 6b...slurry outlet, 7...slurry water collection trough, 8...Slurry concentration tank, 9...Slurry transfer pump, 14...Slurry pump, 16...Small concentration tank, 17...Discharge liquid level adjustment means, 18...Concentrated slurry discharge pipe, 19 ... U-shaped slurry discharge pipe, 2 ... PL + adjustment tank, 4 ... flocculant, 6 ... coagulation sedimentation tank, 12 ... re-agglomeration tank, 15 ... dehydrator, 21 ...・Vertical discharge pipe, 23...Sliding pipe, 22...Small slurry discharge tank, 10a...Suspended water, 10c...Separated water, 10d...Separated water or diluted slurry 20a...Low Concentrated slurry 20b... Concentrated slurry (1), 20c... Concentrated slurry (2), 10b... Clear water, H... Outlet height.
Claims (1)
（２０ａ）に再凝集槽（１２）で凝集剤（４）を添加し
てフロックを大型化した後、小型濃縮槽（１６）におい
て水とスラリーの比重差を利用して沈降させた濃縮スラ
リーを濃縮槽下部に連通したＵ字管型スラリー排出管（
１９）の一方の管に設けられたスラリーの排出液面調整
手段（１７）の出口高さＨを調整することによって、濃
縮槽内の分離水または希薄スラリー（１０ｃ）と濃縮ス
ラリー（２０ｃ）の排出量割合を調整して、連続的に分
離水または希薄スラリー（１０ｄ）を排出し、連続的に
スラリーを濃縮して次工程の脱水機（１５）での処理能
力を上げることを特徴とするスラリーの濃縮方法。 ２、凝集沈澱方式の廃水・廃液処理設備の凝集沈澱槽（
６）の底部から脱水機（１５）に至るスラリー、スラッ
ヂ、汚泥等固液混合液の濃縮装置であって、 凝集剤（４）の添加を行ってフロックを大型化するため
の再凝集槽（１２）と、これに続く小型濃縮槽（１６）
と、この小型濃縮層の底部に一端を連結されたＵ字型ス
ラリー排出管（１９）と、底部にスラリー排出管（１９
）を具えこのＵ字管の他方の垂直排出管（２１）の上方
に同心円的に固定された小型スラリー排出槽（２２）と
、前記小型スラリー排出槽（２２）の内部まで貫入した
前記垂直排出管（２１）の前記小型濃縮槽頂部より低い
上端部に、これを取り囲んで上下動摺動可能なように設
けられた液面調節用の摺動管（２３）とからなる排出液
面調節手段（１７）とからなるスラリーの濃縮装置。[Claims] 1. In a wastewater/waste liquid treatment facility using a coagulation-sedimentation method, a flocculant (4) is added to a low-concentration slurry (20a) extracted from the bottom of a coagulation-sedimentation tank (6) in a re-agglomeration tank (12). After increasing the size of the flocs by adding water, a U-shaped slurry discharge pipe (
By adjusting the outlet height H of the slurry discharge level adjusting means (17) provided in one of the pipes of 19), the separated water or dilute slurry (10c) and concentrated slurry (20c) in the concentration tank can be adjusted. The system is characterized in that separated water or diluted slurry (10d) is continuously discharged by adjusting the discharge rate, and the slurry is continuously concentrated to increase the processing capacity of the dehydrator (15) in the next step. How to concentrate slurry. 2. Coagulation and sedimentation tank of coagulation-sedimentation type wastewater/wastewater treatment equipment (
6) is a concentrating device for solid-liquid mixed liquids such as slurry, sludge, and sludge from the bottom to the dehydrator (15), and includes a re-agglomeration tank (4) for enlarging flocs by adding a flocculant (4). 12) followed by a small concentrator (16)
, a U-shaped slurry discharge pipe (19) connected at one end to the bottom of this small concentrated layer, and a slurry discharge pipe (19) connected to the bottom.
), and a small slurry discharge tank (22) fixed concentrically above the other vertical discharge pipe (21) of this U-shaped pipe, and the vertical discharge penetrating into the inside of the small slurry discharge tank (22). Discharge liquid level adjustment means consisting of a sliding pipe (23) for liquid level adjustment provided at the upper end of the pipe (21) lower than the top of the small concentration tank so as to be able to move up and down so as to surround the pipe (21). (17) A slurry concentrating device comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2166782A JPH0462000A (en) | 1990-06-27 | 1990-06-27 | Method and apparatus for concentrating slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2166782A JPH0462000A (en) | 1990-06-27 | 1990-06-27 | Method and apparatus for concentrating slurry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0462000A true JPH0462000A (en) | 1992-02-27 |
Family
ID=15837581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2166782A Pending JPH0462000A (en) | 1990-06-27 | 1990-06-27 | Method and apparatus for concentrating slurry |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0462000A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008114142A (en) * | 2006-11-02 | 2008-05-22 | Shimizu Corp | Slurry dewatering method and apparatus, and suspension treatment system |
| CN105174580A (en) * | 2015-08-25 | 2015-12-23 | 天津市华通寰昊水务科技有限公司 | Desulphurization waste-water zero discharge processing system and technology |
| GB2581516A (en) * | 2019-02-22 | 2020-08-26 | Cdenviro Ltd | Portable water treatment apparatus |
-
1990
- 1990-06-27 JP JP2166782A patent/JPH0462000A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008114142A (en) * | 2006-11-02 | 2008-05-22 | Shimizu Corp | Slurry dewatering method and apparatus, and suspension treatment system |
| CN105174580A (en) * | 2015-08-25 | 2015-12-23 | 天津市华通寰昊水务科技有限公司 | Desulphurization waste-water zero discharge processing system and technology |
| GB2581516A (en) * | 2019-02-22 | 2020-08-26 | Cdenviro Ltd | Portable water treatment apparatus |
| GB2581516B (en) * | 2019-02-22 | 2021-12-01 | Cde Global Ltd | Portable waste treatment apparatus |
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