JPS58163500A - Dehydration of sludge - Google Patents
Dehydration of sludgeInfo
- Publication number
- JPS58163500A JPS58163500A JP57048398A JP4839882A JPS58163500A JP S58163500 A JPS58163500 A JP S58163500A JP 57048398 A JP57048398 A JP 57048398A JP 4839882 A JP4839882 A JP 4839882A JP S58163500 A JPS58163500 A JP S58163500A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- strainer
- purified water
- flocculant
- opening
- 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
- Treatment Of Sludge (AREA)
- Filtration Of Liquid (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は下水道水等のスラッジ脱水に関するものである
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to sludge dewatering of sewage water and the like.
に記のような脱水に関しては従来遠心分離法。Conventional centrifugation methods are used for dehydration as described in .
ベルトプレス法等が主流を占めている。これらの場合遠
心分離法では下水道水の場合のような大量処理に対して
は当然設備は大がかりとなり動力費も大k<、ベルトプ
レス法、つまり運行する2枚のP布ベルトの間での濾過
方法も設備が大きくなると同時にベルトを頻繁に新替え
せねばならぬ等保守費もかさむことになる。本発明は処
理原水すなわち生スラツジに高分子凝集剤を混入し、ス
ラッジを凝集性でんさせ、この沈で−”ん層中においた
ストレーナより浄化水を抽出することによりスラッジ脱
水を行うという設備費のかさまない方法を提供するもの
である。The belt press method is the mainstream method. In these cases, the centrifugal separation method naturally requires large-scale equipment and high power costs for large-scale treatment of sewage water, and the belt press method, that is, filtration between two moving P cloth belts. This method also increases the size of the equipment and increases maintenance costs, such as frequent replacement of belts. The present invention is an equipment for dewatering sludge by mixing a polymer flocculant into treated raw water, that is, raw sludge, causing the sludge to coagulate, and extracting purified water from this sedimentation through a strainer placed in a sludge layer. It provides an inexpensive method.
第1図は本発明の方法を実施する装置の一例の概念図で
ある。1は生スラッジ人口、2は高分子凝集剤供給口、
3は前記2者をそれら管路の途中で混合するラインミキ
サー、4は上記のようにしてできた混合液が流入する沈
でん沢過槽、5は濾過槽4内下部におかれたストレーナ
、6はその始端をストレーナ5内に開く浄化水取出口、
7は槽4の底に設けられたスラッジ取出バルブ、8はス
トレーナ5に対する逆洗水の供給口である。高分子凝集
剤を混入された生スラツジでは浮遊粒子は高分子凝集剤
により沢過槽4の下部、ストレーナ5の囲りに凝集性で
んし、浄化水取出口6を開けば凝集スラッジはストレー
ナ5の囲りに残って浄化水は取出口6から排出される。FIG. 1 is a conceptual diagram of an example of an apparatus for carrying out the method of the present invention. 1 is the raw sludge population, 2 is the polymer flocculant supply port,
3 is a line mixer that mixes the two above in the middle of the pipe, 4 is a sedimentation filter tank into which the mixed liquid made as described above flows, 5 is a strainer placed at the lower part of the filter tank 4, 6 is a purified water outlet whose starting end opens into the strainer 5;
7 is a sludge take-out valve provided at the bottom of the tank 4, and 8 is a backwash water supply port to the strainer 5. In the case of raw sludge mixed with a polymer flocculant, the suspended particles will be coagulated in the lower part of the filtration tank 4 and around the strainer 5, and if the purified water outlet 6 is opened, the flocculated sludge will be transferred to the strainer. The purified water remaining around 5 is discharged from outlet 6.
凝集スラ、7ジHa[Iパルプ7により取出される。こ
の凝集剤は例えばアクリルアミド0.1%の溶液として
市販されているいわゆる凝集剤でよく、ストレーナには
第2図に示す1.0%程度の間隙の格子型のものでよい
。The agglomerated slurry is removed by 7 diHa[I pulp 7. This flocculant may be, for example, a so-called flocculant commercially available as a 0.1% acrylamide solution, and the strainer may be of the grid type with gaps of about 1.0% as shown in FIG.
以上のような本方法の効果を実験例2例を以て示す。The effects of this method as described above will be illustrated with two experimental examples.
第1例、 第3図。First example, Figure 3.
A)条 件
生スラツジ容器
径90%、高さ1,000 nyn
ストレーナ
径60%、高さ50 Xn、 1.0間隙15個の水平
格子。A) Conditions Raw sludge container diameter 90%, height 1,000 nyn Strainer diameter 60%, height 50 Xn, horizontal grid with 15 1.0 gaps.
容器底から70%離してその中心線におく。Place it on the center line, 70% away from the bottom of the container.
凝集剤 0.1%を混入した11を原水101にまぜる。flocculant Mix 11 mixed with 0.1% into raw water 101.
浄化水取出し 容器底から滴下させる。Purified water extraction Drip from the bottom of the container.
B)スラッジ凝集の経時変化 (1)開始時 液面は管上端より100%下。B) Time course of sludge aggregation (1) At the start The liquid level is 100% below the top of the tube.
(2)5分後
管上端より850 ′y、下る。原水とスラッジは同一
(8)11分後
450 Xnまで下る。水抜けが先行しスラッジの沈下
速度が低下する。(2) After 5 minutes, descend 850'y from the top of the tube. Raw water and sludge descend to 450 Xn after the same (8) 11 minutes. Water drains first and the settling speed of sludge decreases.
(4) 42分後 585 ′ynまで下る。(4) 42 minutes later Descend to 585'yn.
(5) 48分後 浄化水の滴下は粒径3〜5″Xnで2秒毎位。(5) After 48 minutes The purified water is dripped every 2 seconds with a particle size of 3 to 5''Xn.
(6) 55分後 515%まで下る。以後水面の低下はとんどなし。(6) After 55 minutes It drops to 515%. Since then, the water level has hardly dropped.
振動を加えても同様、ストレーナ上方ではスラッジが寒
天状となっているのを、またストレーナと容器壁との間
ではスラッジが粒子状となっているのが認められる。Even when vibration is applied, it can be seen that the sludge is agar-like above the strainer, and that the sludge is particulate between the strainer and the container wall.
C)脱水効果
以上のようにして得られたスラッジは含水率80.9%
であった。これは遠心分離法によるものとは!同じであ
る。C) Dehydration effect The sludge obtained as described above has a moisture content of 80.9%.
Met. This is due to centrifugation! It's the same.
第2例、 第4図。Second example, Figure 4.
A)条 件
これは第1例と同じ装置、同じ混合液で、容器内混合液
面が低下するだけ液を補って行ったものである。A) Conditions This was carried out using the same equipment and the same mixed liquid as in the first example, with the liquid being supplemented to the extent that the level of the mixed liquid in the container had dropped.
B)経時的変化
aは実験開始時の容器上端より100′ynの処の液面
の実験終了時、すなわち実験開始後7時間たった時の液
面、bは実験開始後4時間たった液を実験開始時の高さ
まで補充した時の液面の実験終了時の液面+ cH同
同時時間後dは同7時間後のものである。この実験で最
初は水抜けにスラッジと水とが出て来たが10秒後には
スラッジは出なくなった。B) Change over time a is the liquid level at the end of the experiment, which is 100'yn from the top of the container at the start of the experiment, that is, 7 hours after the start of the experiment, and b is the liquid level 4 hours after the start of the experiment. The liquid level when refilled to the starting level is the liquid level at the end of the experiment + cH after the same time d is the same 7 hours later. In this experiment, sludge and water initially came out when the water drained, but sludge stopped coming out after 10 seconds.
C)脱水効果
スラッジのa、b、c、dの各点における状態を含水率
で示せばa −92,9%、b−98,2%、 c
−92,9%、d−92,6%であった。C) Dehydration effect The state of the sludge at points a, b, c, and d is expressed in terms of moisture content: a -92.9%, b -98.2%, c
-92.9%, d-92.6%.
以上かられかるように本発明方法によれば大きな動力的
装置や複雑な機構を要せず、しかも従来に匹敵する脱水
効果を得られるものである。As can be seen from the above, the method of the present invention does not require large power equipment or complicated mechanisms, and can achieve dehydration effects comparable to those of the conventional method.
第1図は本発明のスラッジの脱水方法に用いる脱水装置
の概念を示す説明図、第2図はストレーナの断面図、第
3図は実験例1の、第4図は実験例2の実験装置の何れ
も断面図である。
1 生スラツジ入口
2 高分子凝集剤供給口
3 生スラツジと凝集剤との混合用のラインミキサー
4 混合液の沈でん沢過槽
5 濾過槽内下部のストレー−
6浄化水取出口
ア スラッジ取出パルプ
8 ストレーナの逆洗水供給口
a 実験開始後7時間後の液面
b 同 4時間復液を始めの高さに補充した時の
実験終了時の液面
同 5時間後 同上
d 同 7時間後 同上
出願人 三井造船株式会社
代理人 河田茂夫
茅3図
′42図
)4図Figure 1 is an explanatory diagram showing the concept of the dewatering device used in the sludge dewatering method of the present invention, Figure 2 is a sectional view of the strainer, Figure 3 is the experimental apparatus of Experimental Example 1, and Figure 4 is the experimental apparatus of Experimental Example 2. Both are cross-sectional views. 1 Raw sludge inlet 2 Polymer flocculant supply port 3 Line mixer for mixing raw sludge and flocculant 4 Sedimentation filter tank for mixed liquid 5 Stray at the bottom of the filtration tank 6 Purified water outlet as Sludge take-out pulp 8 Strainer backwash water supply port a Liquid level b 7 hours after the start of the experiment Same liquid level at the end of the experiment after 4 hours of replenishing the condensate to the initial height 5 hours later Same as above d Same as above 7 hours later Same as above Applicant Mitsui Engineering & Shipbuilding Co., Ltd. Agent Shigeo Kawata Figure 3'42) Figure 4
Claims (1)
トレーナを通じて浄化水を取出すスラ。 ジの脱水方法。[Claims] A sludge in which a polymer flocculant is mixed into raw sludge, and purified water is extracted from this mixture through a strainer. How to dehydrate ji.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57048398A JPS58163500A (en) | 1982-03-25 | 1982-03-25 | Dehydration of sludge |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57048398A JPS58163500A (en) | 1982-03-25 | 1982-03-25 | Dehydration of sludge |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS58163500A true JPS58163500A (en) | 1983-09-28 |
Family
ID=12802190
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57048398A Pending JPS58163500A (en) | 1982-03-25 | 1982-03-25 | Dehydration of sludge |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58163500A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009082886A1 (en) * | 2008-01-02 | 2009-07-09 | Guangzhou Pude Environmental Protection Equipment, Ltd. | A sludge concentrated dehydration method |
US8870034B2 (en) | 2010-05-24 | 2014-10-28 | Three Bond Co. Ltd. | Material pressure feeding apparatus |
CN105948440A (en) * | 2016-07-11 | 2016-09-21 | 许祚员 | Diazinon-polluted sludge treatment agent and preparation method thereof |
CN105948439A (en) * | 2016-07-11 | 2016-09-21 | 许祚员 | Glyphosate-polluted sludge treatment agent and preparation method |
-
1982
- 1982-03-25 JP JP57048398A patent/JPS58163500A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009082886A1 (en) * | 2008-01-02 | 2009-07-09 | Guangzhou Pude Environmental Protection Equipment, Ltd. | A sludge concentrated dehydration method |
US8870034B2 (en) | 2010-05-24 | 2014-10-28 | Three Bond Co. Ltd. | Material pressure feeding apparatus |
CN105948440A (en) * | 2016-07-11 | 2016-09-21 | 许祚员 | Diazinon-polluted sludge treatment agent and preparation method thereof |
CN105948439A (en) * | 2016-07-11 | 2016-09-21 | 许祚员 | Glyphosate-polluted sludge treatment agent and preparation method |
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