JP2010069390A5 - - Google Patents
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- JP2010069390A5 JP2010069390A5 JP2008238093A JP2008238093A JP2010069390A5 JP 2010069390 A5 JP2010069390 A5 JP 2010069390A5 JP 2008238093 A JP2008238093 A JP 2008238093A JP 2008238093 A JP2008238093 A JP 2008238093A JP 2010069390 A5 JP2010069390 A5 JP 2010069390A5
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- belt
- endless belt
- flocculant
- liquid
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この発明は、従来の課題を解決するものであって、その要旨とするところは、緊張ロールと駆動ロールに無端ベルトを掛け回し、無端ベルトの反転部に洗浄装置を配設して、無端ベルトのろ過面に汚泥を供給し、搬送しながら濃縮脱水するベルト型濃縮機において、無端ベルトの給液部に垂設した液面計で、給液部から初期濃縮部にかけての液溜りを検出し、液溜り状況を受信する制御装置に予め駆動ロールの電動機の回転数と、凝集剤の添加率を段階的に増加させる凝集剤供給ポンプの回転数を設定し、無端ベルトの給泥液面に液溜りを検出した時に、制御装置の指令信号により、ベルト速度を増速させて無端ベルトの単位面積あたりの処理量を軽減し、無端ベルトの給泥液面の低下を検出した時には、初期設定のベルト速度に戻すと共に、ベルト速度を上げても液溜りが解消できない場合には、凝集剤供給ポンプの回転数を変更して凝集剤の添加率を段階的に増加させ、液溜り低下の改善が見られれば、ベルト速度と凝集剤添加率を初期設定に戻して運転し、凝集剤の添加率を段階的に増加させても液溜りの状況が改善できない場合には、汚泥供給量を減少し、或は運転を停止するもので、給液部から初期濃縮部の無端ベルトに液溜まりを生じさせることがなく、ベルト速度を任意に設定できる。原液性状の変動に対して、ろ液分離性能を良好に継続し、ベルト型濃縮機の性能を維持して安定した運転が行える。洗浄水にろ液を使用してもノズルが目詰まりを起こすことがない。
SUMMARY OF THE INVENTION The present invention solves the conventional problems, and the gist thereof is that an endless belt is wound around a tension roll and a drive roll, and a cleaning device is disposed at a reversing portion of the endless belt, thereby the endless belt. In a belt- type concentrator that supplies sludge to the filtration surface of the belt and concentrates and dehydrates it while transporting it, a liquid level gauge suspended from the liquid supply part of the endless belt detects the liquid pool from the liquid supply part to the initial concentration part. , Set the rotation speed of the motor of the drive roll and the rotation speed of the flocculant supply pump that increases the flocculant addition rate step by step in the control device that receives the liquid pool status, When a liquid pool is detected, the belt speed is increased by the command signal from the controller to reduce the processing amount per unit area of the endless belt. And return to the belt speed If the liquid pool cannot be resolved even if the belt speed is increased, change the rotation speed of the coagulant supply pump to increase the coagulant addition rate step by step. When the flocculant addition rate is returned to the initial setting and operation is continued, and even if the flocculant addition rate is increased stepwise, the sludge supply amount is reduced or the operation is stopped. Thus, the belt speed can be arbitrarily set without causing a liquid pool from the liquid supply unit to the endless belt of the initial concentration unit. With respect to fluctuations in the stock solution properties, the filtrate separation performance can be continued well, and the belt type concentrator performance can be maintained and stable operation can be performed. The nozzle will not clog even if the filtrate is used for washing water.
図３はベルト型濃縮機の安定運転制御方法のブロック図であって、無端ベルト５を洗浄しながら、原液性状の変動により発生する液溜りを、無端ベルト５の走行速度と凝集剤の添加率を操作して、液溜りを解消するベルト型濃縮機１の運転制御方法である。その無端ベルト５の液溜り解消方法が、
ａ．ベルト型濃縮機１の運転開始
ｂ．洗浄ポンプ１６の二次側の電磁弁１５を閉
ｃ．洗浄ポンプ１６の運転始動（吐出量は自洗形ノズル１個当たり、２Ｌ／ｍｉｎ、締切り運転）
ｄ．電磁弁１５を開（締切り圧を開放した衝撃圧力に変換）
ｅ．自洗形ノズル１４で噴霧開始（高圧力の洗浄水の衝撃）
ｆ．無端ベルト５の洗浄開始・連続洗浄
ｇ．無端ベルト５のろ過面５ａに液溜り現象発生（無端ベルト５の給液部Ａから初期濃縮部Ｂにかけての液溜り）
ｈ．液面計１１が液溜りを検知、検出信号を制御装置１２に送信
ｉ．制御装置１２は駆動ロール４の電動機３に指令信号を送信（無端ベルトを１０〜５０％増速）
ｊ．無端ベルト５の液溜り解消・ＮＯ（制御装置１２から凝集剤ポンプ７に指令信号）
ｋ．凝集剤添加率１０％増加
ｊ．無端ベルト５の液溜り解消・ＮＯ（制御装置１２から凝集剤ポンプ７に指令信号）
ｋ．薬注率を段階的に増加（２０％、３０％）
ｍ．無端ベルト５を増速し、薬注率の増加を繰返しても液溜り現象が解消されなければ、汚泥供給量を減少、或は一時運転を停止して調査
ｎ．液溜りが解消すれば、運転を継続
ｏ．無端ベルト５の速度を初期設定値に戻す
ｐ．再び、無端ベルト５の液溜りの有無を検知し、液溜りが発生すれば、ｇ〜ｏを繰返す。
ｑ．無端ベルト５に液溜りの発生がなければ運転を継続
ｒ．薬注率を増加している時には、凝集剤添加率を減少させて初期設定値に戻す
ｓ．液溜りが発生すればｇに戻り、ｇ〜ｒを繰返す
ｔ．無端ベルト５に液溜りがなければ運転を継続
FIG. 3 is a block diagram of a method for controlling the stable operation of the belt type concentrator. While the endless belt 5 is being washed, the liquid pool generated by fluctuations in the properties of the stock solution, the running speed of the endless belt 5 and the addition rate of the flocculant Is an operation control method for the belt type concentrator 1 that eliminates the liquid pool by operating. The method for eliminating the liquid pool of the endless belt 5 is as follows:
a. Start of operation of belt type concentrator 1 b. Close the solenoid valve 15 on the secondary side of the cleaning pump 16 c. Run Start of wash pump 16 (discharge amount per one own wash-shaped nozzle, 2L / min, Deadline operation)
d. Open the solenoid valve 15 (convert the impact pressure to the release pressure)
e. Start spraying the own washing type nozzle 14 (an impact of the washing water of the high pressure)
f. Start cleaning / continuous cleaning of endless belt 5 g. Occurrence of liquid accumulation on the filtration surface 5a of the endless belt 5 (liquid accumulation from the liquid supply part A to the initial concentration part B of the endless belt 5)
h. Level gauge 11 detects liquid accumulation and sends detection signal to controller 12 i. The control device 12 transmits a command signal to the motor 3 of the drive roll 4 (the endless belt is increased by 10 to 50%).
j. Liquid pool elimination of endless belt 5 / NO (command signal from controller 12 to flocculant pump 7)
k. Increasing rate of flocculant added by 10% j. Liquid pool elimination of endless belt 5 / NO (command signal from controller 12 to flocculant pump 7)
k. Increase the dose rate step by step (20%, 30%)
m. If the liquid pool phenomenon is not resolved even if the endless belt 5 is accelerated and the increase in the chemical injection rate is repeated, the sludge supply amount is reduced or the temporary operation is stopped n. If the liquid pool disappears, continue operation
o. Return the speed of the endless belt 5 to the initial setting.
p. Again, the presence or absence of liquid accumulation in the endless belt 5 is detected. If liquid accumulation occurs, steps g to o are repeated.
q. If the endless belt 5 does not accumulate liquid, continue operation r. When the chemical injection rate is increasing, the flocculant addition rate is decreased and returned to the initial setting value. If liquid accumulation occurs, return to g and repeat g to r. If the endless belt 5 does not collect liquid, the operation will continue.
Claims (1)
The endless belt (5) is wound around the tension roll (2) and the drive roll (4), and the cleaning device (13) is disposed at the reversing portion of the endless belt (5), so that the filtration surface of the endless belt (5) ( In a belt type concentrator that supplies sludge to 5a) and concentrates and dehydrates it while being transported, a liquid level gauge (11) suspended from the liquid supply part (A) of the endless belt (5) The controller (12) that detects the liquid pool from the initial concentration part (B) to the initial concentration unit (B) and receives the liquid pool status in advance determines the rotation speed of the motor (3) of the drive roll (4) and the addition rate of the flocculant. When the number of rotations of the flocculant supply pump (7) to be increased is set and liquid accumulation is detected on the surface of the supplied mud of the endless belt (5), the belt speed is increased by a command signal from the controller (12). Reduce the throughput per unit area of the endless belt (5) When a decrease is detected, the belt speed is returned to the initial belt speed, and if the liquid pool cannot be eliminated by increasing the belt speed, the rotational speed of the flocculant supply pump (7) is changed to increase the flocculant addition rate. If the decrease in liquid pool is improved step by step, the belt speed and flocculant addition rate can be reset to the initial settings, and even if the flocculant addition rate is increased step by step, If the improvement cannot be improved, the sludge supply amount is reduced or the operation is stopped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008238093A JP4849383B2 (en) | 2008-09-17 | 2008-09-17 | Operation control method for belt type concentrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008238093A JP4849383B2 (en) | 2008-09-17 | 2008-09-17 | Operation control method for belt type concentrator |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2010069390A JP2010069390A (en) | 2010-04-02 |
| JP2010069390A5 true JP2010069390A5 (en) | 2010-10-14 |
| JP4849383B2 JP4849383B2 (en) | 2012-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2008238093A Active JP4849383B2 (en) | 2008-09-17 | 2008-09-17 | Operation control method for belt type concentrator |
Country Status (1)
| Country | Link |
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| JP (1) | JP4849383B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4797061B2 (en) * | 2008-12-19 | 2011-10-19 | 月島機械株式会社 | Belt type concentrator and belt type concentrator operation method |
| CN102241467A (en) * | 2010-05-10 | 2011-11-16 | 佛山科创玮景环保技术有限公司 | Concentrating device |
| US8241506B1 (en) * | 2010-08-17 | 2012-08-14 | PB's Enterprises, Inc. | Floating debris removal system for a pool |
| JP6060305B1 (en) * | 2016-07-08 | 2017-01-11 | 株式会社神鋼環境ソリューション | Belt type concentrator and its operation method |
| JP6246273B1 (en) * | 2016-07-13 | 2017-12-13 | 四国工業株式会社 | Sludge separator and method for cutting grinding fluid |
| JP6927923B2 (en) * | 2018-05-18 | 2021-09-01 | 月島機械株式会社 | Concentration method and dehydration method |
| JP7239358B2 (en) * | 2019-03-18 | 2023-03-14 | 住友重機械エンバイロメント株式会社 | Belt filtration device and control method for belt filtration device |
| CN115253408B (en) * | 2022-09-27 | 2022-12-23 | 广东新泰隆环保集团有限公司 | Split concentration plate-frame type filter press and sludge dewatering process |
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