JPS63305992A - Apparatus for flocculating inorganic waste water - Google Patents
Apparatus for flocculating inorganic waste waterInfo
- Publication number
- JPS63305992A JPS63305992A JP14364287A JP14364287A JPS63305992A JP S63305992 A JPS63305992 A JP S63305992A JP 14364287 A JP14364287 A JP 14364287A JP 14364287 A JP14364287 A JP 14364287A JP S63305992 A JPS63305992 A JP S63305992A
- Authority
- JP
- Japan
- Prior art keywords
- raw water
- flocculant
- concentration
- flow rate
- added
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 230000003311 flocculating effect Effects 0.000 title abstract description 3
- 239000010805 inorganic waste Substances 0.000 title abstract 2
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 16
- 239000003002 pH adjusting agent Substances 0.000 claims abstract description 9
- 239000002351 wastewater Substances 0.000 claims description 11
- 239000000701 coagulant Substances 0.000 claims description 9
- 238000010979 pH adjustment Methods 0.000 claims description 8
- 238000005189 flocculation Methods 0.000 claims description 6
- 230000016615 flocculation Effects 0.000 claims description 6
- 230000001112 coagulating effect Effects 0.000 claims 1
- 239000003814 drug Substances 0.000 abstract description 3
- 229940079593 drug Drugs 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 150000002500 ions Chemical class 0.000 description 11
- 238000005345 coagulation Methods 0.000 description 6
- 230000015271 coagulation Effects 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- 238000001514 detection method Methods 0.000 description 3
- 239000008394 flocculating agent Substances 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 235000014413 iron hydroxide Nutrition 0.000 description 1
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- UGZADUVQMDAIAO-UHFFFAOYSA-L zinc hydroxide Chemical compound [OH-].[OH-].[Zn+2] UGZADUVQMDAIAO-UHFFFAOYSA-L 0.000 description 1
- 229940007718 zinc hydroxide Drugs 0.000 description 1
- 229910021511 zinc hydroxide Inorganic materials 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Removal Of Specific Substances (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は重金属を含有する無機系排水の凝集処理装置に
関するものである。詳しくは原水の流量及び重金属イオ
ン濃度に対応して最適な凝集剤添加量となるように制御
する無機系排水の凝集処理装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a coagulation treatment device for inorganic wastewater containing heavy metals. More specifically, the present invention relates to an inorganic wastewater coagulation treatment device that controls the amount of coagulant added to be optimal in accordance with the flow rate and heavy metal ion concentration of raw water.
［従来の技術］
従来、重金属を含有する無機系排水を凝集沈殿処理する
場合、塩化アルミニウムやポリ塩化アルミニウム、硫酸
アルミニウム等の無機系凝集剤及び高分子凝集剤を添加
するに際しては、これら凝集剤の添加量は一定量とされ
ていた。この場合、原水流量及び原水中の重金属イオン
濃度等の原水条件の変動があった場合には、手動にて凝
集剤添加量を調整しない限り凝集剤添加量が過剰となっ
て無駄となったり、あるいは凝集剤添加量が不足して処
理水質が悪化する等の現象が生していた。[Prior Art] Conventionally, when inorganic wastewater containing heavy metals is subjected to coagulation-sedimentation treatment, inorganic flocculants and polymer flocculants such as aluminum chloride, polyaluminum chloride, and aluminum sulfate are added. The amount of addition was set to be a constant amount. In this case, if there are fluctuations in raw water conditions such as raw water flow rate and heavy metal ion concentration in raw water, the amount of flocculant added may become excessive and wasteful unless the amount of flocculant added is adjusted manually. Alternatively, the quality of treated water deteriorated due to insufficient amount of coagulant added.
これに対し、重金属イオン濃度を検出するイオン濃度セ
ンサや原水流量の検出手段を設置し、これらの濃度及び
流量をマイクロコンピュータ等に入力して最適な凝集剤
添加量となるように自動制御をなすことか可能であるか
、上記センサやマイクロコンピュータは高価であったり
、また上記イオン濃度センサは顕繁に点検して洗浄及び
較正等を施さないと的確な濃度検出ができない。To deal with this, an ion concentration sensor that detects the concentration of heavy metal ions and a means of detecting the raw water flow rate are installed, and these concentrations and flow rates are input into a microcomputer, etc. to automatically control the amount of coagulant added. However, the sensor and microcomputer are expensive, and the ion concentration sensor cannot accurately detect concentration unless it is frequently inspected, cleaned, and calibrated.
［発明か解決しようとする問題点］
上記の通り、従来の無機系排水の凝集処理装置において
は、原水条件が変動すると凝集剤添加に無駄か生じたり
、処理水質が不安定になる、あるいは装置構成コストが
極めて高くしかも保守管理か煩雑である等の問題があフ
た。[Problems to be solved by the invention] As mentioned above, in conventional inorganic wastewater coagulation treatment equipment, if the raw water conditions fluctuate, there is waste in adding coagulant, the quality of the treated water becomes unstable, or the equipment Problems such as extremely high configuration costs and complicated maintenance management were eliminated.
［問題点を解決するための手段］
本発明の無機系排水の凝集処理装置は、無機系排水（原
水）に凝集剤を添加する手段、原水流量の検出手段、原
水にｐＨ調整剤を添加して所定範囲のｐＨとするｐＨ調
整手段、ｐＨ調整された原水中のＳＳ濃度を検出する手
段及び、所定量の凝集剤添加をなすように上記凝集剤添
加手段を制御する手段を備えている。この制御手段は、
予め設定された原水流量、ＳＳ濃度及び凝集剤添加量の
関係と、ＳＳ濃度検出手段にて検出されたＳＳ濃度とに
基き、添加すべき凝集剤の量を制御するものである。[Means for Solving the Problems] The inorganic wastewater coagulation treatment apparatus of the present invention includes means for adding a coagulant to inorganic wastewater (raw water), means for detecting the raw water flow rate, and adding a pH adjuster to the raw water. A pH adjusting means for adjusting the pH to a predetermined range, a means for detecting the SS concentration in the pH-adjusted raw water, and a means for controlling the flocculant adding means so that a predetermined amount of flocculant is added. This control means is
The amount of flocculant to be added is controlled based on the preset relationship between raw water flow rate, SS concentration, and flocculant addition amount, and the SS concentration detected by the SS concentration detection means.
［作用］
本発明の凝集処理装置においては、無機系排水にｐＨ調
整剤を添加して所定ｐＨとすることにより、原水中に含
まれていた重金属イオンが例えば水酸化鉄、水酸化亜鉛
等の水酸化物となり、ＳＳ（懸濁物質）となる。このＳ
Ｓ濃度は原水中の重金属イオン量と相関性を有するもの
である。そこで、このＳＳ濃度と原水流量の検出値とが
シーケンサ等の制御手段に人力されて凝集剤添加量が演
算され、この演算された割合にて凝集剤か添加される。[Function] In the coagulation treatment device of the present invention, by adding a pH adjuster to the inorganic wastewater to adjust the pH to a predetermined value, heavy metal ions contained in the raw water are converted to iron hydroxide, zinc hydroxide, etc. It becomes hydroxide and becomes SS (suspended solids). This S
The S concentration has a correlation with the amount of heavy metal ions in raw water. Therefore, this SS concentration and the detected value of the raw water flow rate are manually input to a control means such as a sequencer to calculate the amount of flocculant to be added, and the flocculant is added at the calculated ratio.
従って、本発明装置においては原水中の重金属濃度及び
原水流量に対応して適正量の凝集剤が原水に添加される
ことになる。Therefore, in the apparatus of the present invention, an appropriate amount of flocculant is added to the raw water in accordance with the heavy metal concentration in the raw water and the flow rate of the raw water.
［実施例コ 以下、図面を参照して実施例について説明する。[Example code] Examples will be described below with reference to the drawings.
第１図は本発明の実施例装置を示す系統図である。符号
１は流量計１ａを備えた原水計量槽であり、原水流量の
検出手段を構成している。該原水計量槽の下流側には、
順次にＳＳ濃度検出手段たる濁度計２ａ及びｐＨメータ
２ｂを備えるｐＨ調整槽２、凝集槽３及び沈殿槽４が順
次に配設されている。符号１１は演算処理を行なうため
のシーケンサてあり、前記流量計１ａと濁度計２ａの検
出値が入力されている。符号１２はｐＨ調整剤の貯槽で
あり、ポンプ１３によりｐＨ調整剤がｐＨ調整槽２に供
給可能とされている。符号１４はポンプ１３の制御装置
であり、ｐＨメータ２ｂの検出値が入力されており、ｐ
Ｈ調整槽２内のｐＨが所定範囲となるようにｐＨ調整剤
の供給量を制御している。これらｐＨ調整剤貯槽１２、
ポンプ１３及び制御装置１４によってｐＨ調整手段が構
成されている。符号１５は無機凝集剤の貯槽てあり、ポ
ンプ１６によりこの無機凝集剤がｐＨ調整槽に供給可能
とされている。FIG. 1 is a system diagram showing an embodiment of the present invention. Reference numeral 1 denotes a raw water measuring tank equipped with a flow meter 1a, which constitutes means for detecting the flow rate of raw water. On the downstream side of the raw water measuring tank,
A pH adjustment tank 2, a flocculation tank 3, and a settling tank 4 are sequentially provided, each of which includes a turbidity meter 2a and a pH meter 2b serving as SS concentration detection means. Reference numeral 11 denotes a sequencer for performing arithmetic processing, into which detected values from the flow meter 1a and turbidity meter 2a are input. Reference numeral 12 is a storage tank for a pH adjusting agent, and the pH adjusting agent can be supplied to the pH adjusting tank 2 by a pump 13 . Reference numeral 14 is a control device for the pump 13, into which the detected value of the pH meter 2b is input, and p
The amount of pH adjuster supplied is controlled so that the pH within the H adjustment tank 2 is within a predetermined range. These pH adjuster storage tanks 12,
The pump 13 and the control device 14 constitute a pH adjusting means. Reference numeral 15 denotes a storage tank for an inorganic flocculant, and a pump 16 can supply this inorganic flocculant to the pH adjustment tank.
符号１７はシーケンサ１１からの信号が入力されている
インバータであり、制御信号をポンプ１６に出力してい
る。符号１８は高分子凝集剤の溶解槽であり、ポンプ１
９によって高分子凝集剤が凝集槽３に供給可能とされて
いる。このポンプ１９はインバータ２０を介してシーケ
ンサ１１によって制御される。これら凝集剤の貯槽１５
、溶解槽１８、ポンプ１６．１９によって凝集剤の添加
手段が構成されている。また、シーケンサ１１及びイン
バータ１７．２０によって凝集剤添加手段の制御手段が
構成されている。Reference numeral 17 is an inverter to which a signal from the sequencer 11 is input, and outputs a control signal to the pump 16. Reference numeral 18 is a dissolving tank for polymer flocculant, and pump 1
9 allows the polymer flocculant to be supplied to the flocculation tank 3. This pump 19 is controlled by the sequencer 11 via an inverter 20. Storage tank 15 for these flocculants
, the dissolution tank 18, and the pumps 16 and 19 constitute a flocculant addition means. Further, the sequencer 11 and the inverters 17 and 20 constitute control means for the flocculant addition means.
次に上記実施例装置の作動について説明する。Next, the operation of the above embodiment device will be explained.
無機系排水は原水計量槽１に導入され、この流量力寵荒
量計１ａにて検出されシーケンサ１１に入力される。原
水は次いでｐＨ調整槽２に導入され、ｐＨ調整剤及び無
機凝集剤の添加を受ける。ｐＨ調整剤は、前述の通りｐ
Ｈメータ２ｂで検出されるｐＨが所定範囲となるように
その添加がなされる。ｐＨ調整により原水中に含まれて
いた重金属イオンは水酸化物のＳＳとなる。このＳＳ濃
度は濁度計２ａにて検出され、検出信号はシーケンサ１
１に人力される。ｐＨ調整槽２からの被処理水は次いて
凝集槽３に導入され、高分子凝集剤を添加されて細かな
ＳＳが大きなフロックに成長され、次いで沈殿槽４に導
入されフロックの沈降分離が行なわれる。沈降したフロ
ックはスラッジとして排出され、スラッジ処理系統に送
られる。また上澄みか処理水として放流工程や高次処理
工程に送られる。Inorganic wastewater is introduced into a raw water measuring tank 1, detected by a flow rate meter 1a, and inputted to a sequencer 11. The raw water is then introduced into the pH adjustment tank 2, where a pH adjustment agent and an inorganic flocculant are added. The pH adjuster is p
The addition is made so that the pH detected by the H meter 2b falls within a predetermined range. By adjusting the pH, the heavy metal ions contained in the raw water become SS hydroxides. This SS concentration is detected by the turbidity meter 2a, and the detection signal is transmitted by the sequencer 1.
1 is man-powered. The water to be treated from the pH adjustment tank 2 is then introduced into a coagulation tank 3, where a polymer flocculant is added to grow fine SS into large flocs, and then introduced into a settling tank 4 where the flocs are settled and separated. It will be done. The settled flocs are discharged as sludge and sent to a sludge treatment system. In addition, the supernatant or treated water is sent to the discharge process or higher-level treatment process.
しかして、シーケンサ１１においては検出された原水流
量及びＳＳ濃度に基いて凝集剤の添加量、 を演算する
。このシーケンサ１１には予めＳＳ濃度と原水流量に対
応した凝集剤添加量が入力されている。この添加量は、
第２図に示す如く原水流量が増大するほど増加され、ま
たＳＳ濃度が高くなるほど増加するように設定されてい
る。（第２図のＡ、Ｂ、ＣはＡ＞Ｂ＞Ｃの関係にある。Therefore, the sequencer 11 calculates the amount of coagulant added based on the detected raw water flow rate and SS concentration. The amount of flocculant added corresponding to the SS concentration and raw water flow rate is input into this sequencer 11 in advance. This addition amount is
As shown in FIG. 2, it is set to increase as the raw water flow rate increases, and as the SS concentration increases. (A, B, and C in FIG. 2 have a relationship of A>B>C.
）シーケンサ１１からの演算信号がインバータ１７．２
０にてそれぞれポンプ１６．１９の作動信号に変換され
て出力され、ポンプ１６．１９がそれぞれ所定量の無機
凝集剤と高分子凝集剤をｐＨ調整槽２及び凝集槽３に供
給する。) The calculation signal from the sequencer 11 is sent to the inverter 17.2.
0, the pumps 16 and 19 respectively supply predetermined amounts of the inorganic flocculant and the polymer flocculant to the pH adjustment tank 2 and the flocculation tank 3.
このように構成された凝集処理装置においては、原水流
量及び原水中の重金属イオン濃度に対応して凝集剤の添
加量が制御されるから、これら原水流量や重金属イオン
濃度の変動があっても常に最適量の凝集剤が添加される
ことになる。なお、上記実施例では沈殿槽４によりスラ
ッジの分離を行なっているが、このような沈降分離方式
の装置の外、浮上分離方式の装置を採用しても良い。In the flocculation treatment equipment configured in this way, the amount of flocculant added is controlled according to the raw water flow rate and the heavy metal ion concentration in the raw water, so even if there are fluctuations in the raw water flow rate or heavy metal ion concentration, the amount of flocculant added is always controlled. The optimum amount of flocculant will be added. In the above embodiment, the sludge is separated by the settling tank 4, but in addition to such a sedimentation separation system, a flotation separation system may also be used.
［効果コ
以上の通り、本発明の無機系排水の凝集処理装置におい
ては、原水流量及び原水中の重金属イオン濃度に対応し
て凝集剤の添加量制御が行なわれるので、凝集剤添加量
が適正なものとなり、薬品コストの低減が図れる。また
、常に適正量の凝集剤添加を行なうから、ＩＡ理水質も
極めて安定したものとなる。しかも、本発明装置におい
ては比較的安価でしかも保守管理の平易な装置にて構成
することができるので、実用性にも優れる。[Effects] As described above, in the inorganic wastewater flocculation treatment apparatus of the present invention, the amount of flocculant added is controlled in accordance with the raw water flow rate and the heavy metal ion concentration in the raw water, so the amount of flocculant added is appropriate. This makes it possible to reduce drug costs. In addition, since an appropriate amount of flocculant is always added, the IA water quality becomes extremely stable. Moreover, since the apparatus of the present invention can be constructed from a relatively inexpensive and easy-to-maintain apparatus, it is highly practical.
第１図は本発明の実施例装置を示す系統図、第２図は凝
集剤添加量を示すグラフである。
１・・・原水計量槽、 ２・・・ｐＨ調整槽、３・
・・凝集槽、 ４・・・沈殿槽、１１・・・シー
ケンサ、 １５・・・無機凝集剤貯槽、１８・・・高
分子凝集剤溶解槽。FIG. 1 is a system diagram showing an example apparatus of the present invention, and FIG. 2 is a graph showing the amount of flocculant added. 1... Raw water measuring tank, 2... pH adjustment tank, 3...
... flocculating tank, 4... settling tank, 11... sequencer, 15... inorganic flocculant storage tank, 18... polymer flocculant dissolving tank.
Claims (1)
ら凝集剤を添加して凝集処理を行なう装置において、 原水流量の検出手段； 原水にｐＨ調整剤を添加して所定範囲のｐＨとするｐＨ
調整手段； ｐＨ調整された原水中のＳＳ濃度を検出する手段；及び
、 予め設定された原水流量、ＳＳ濃度及び凝集剤添加量の
関係と、上記手段にて検出されたＳＳ濃度とに基き、所
定量の凝集剤添加をなすように前記凝集剤添加手段を制
御する手段； を備えたことを特徴とする無機系排水の凝集処理装置。(1) In an apparatus that performs flocculation treatment by adding a flocculant to inorganic wastewater containing heavy metals from a flocculant addition means, a means for detecting the flow rate of raw water; A pH adjuster is added to the raw water to adjust the pH to a predetermined range. pH
Adjustment means; Means for detecting the SS concentration in the pH-adjusted raw water; and Based on the preset relationship between the raw water flow rate, SS concentration, and amount of coagulant added, and the SS concentration detected by the above means, An apparatus for coagulating inorganic wastewater, comprising: means for controlling the coagulant addition means so that a predetermined amount of coagulant is added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14364287A JPH0729101B2 (en) | 1987-06-09 | 1987-06-09 | Inorganic wastewater coagulation treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14364287A JPH0729101B2 (en) | 1987-06-09 | 1987-06-09 | Inorganic wastewater coagulation treatment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63305992A true JPS63305992A (en) | 1988-12-13 |
| JPH0729101B2 JPH0729101B2 (en) | 1995-04-05 |
Family
ID=15343528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14364287A Expired - Fee Related JPH0729101B2 (en) | 1987-06-09 | 1987-06-09 | Inorganic wastewater coagulation treatment device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0729101B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH081173A (en) * | 1994-06-23 | 1996-01-09 | Kurita Water Ind Ltd | Method and apparatus for treating mercury-containing waste water |
| JP2010214248A (en) * | 2009-03-13 | 2010-09-30 | Toshiba Corp | Solid-liquid separation system |
| JP2011083708A (en) * | 2009-10-15 | 2011-04-28 | Toshiba Corp | Solid-liquid separation system |
| JP2020132982A (en) * | 2019-02-25 | 2020-08-31 | 住友金属鉱山株式会社 | Solid-liquid separation method of nickel high-pressure leach residue |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101483683B1 (en) * | 2014-07-01 | 2015-01-16 | 강영현 | Water treatment system using rapid coagulation and sedimentation |
-
1987
- 1987-06-09 JP JP14364287A patent/JPH0729101B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH081173A (en) * | 1994-06-23 | 1996-01-09 | Kurita Water Ind Ltd | Method and apparatus for treating mercury-containing waste water |
| JP2010214248A (en) * | 2009-03-13 | 2010-09-30 | Toshiba Corp | Solid-liquid separation system |
| JP2011083708A (en) * | 2009-10-15 | 2011-04-28 | Toshiba Corp | Solid-liquid separation system |
| JP2020132982A (en) * | 2019-02-25 | 2020-08-31 | 住友金属鉱山株式会社 | Solid-liquid separation method of nickel high-pressure leach residue |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0729101B2 (en) | 1995-04-05 |
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