JPS5813228B2 - Method and equipment for treating waste liquid containing heavy metals, etc. - Google Patents
Method and equipment for treating waste liquid containing heavy metals, etc.Info
- Publication number
- JPS5813228B2 JPS5813228B2 JP54158441A JP15844179A JPS5813228B2 JP S5813228 B2 JPS5813228 B2 JP S5813228B2 JP 54158441 A JP54158441 A JP 54158441A JP 15844179 A JP15844179 A JP 15844179A JP S5813228 B2 JPS5813228 B2 JP S5813228B2
- Authority
- JP
- Japan
- Prior art keywords
- waste liquid
- heavy metals
- containing heavy
- heating
- tank
- 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
Landscapes
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Description
【発明の詳細な説明】
本発明は、重金属などを含む廃液の処理方法および装置
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for treating waste liquid containing heavy metals and the like.
従来、重金属、たとえばクロム，モリブデン，鉛など、
あるいは近来特に公害問題上環境汚染の原因とされる水
銀，カドミウム，砒素などを含む工場廃液の処理方法と
しては、蒸発乾固による方法が一般的であるが、この方
法による場合、廃液の性状によってはきわめて高価な装
置が必要とされる。Traditionally, heavy metals such as chromium, molybdenum, lead, etc.
In recent years, evaporation to dryness has been a common method for treating factory waste fluids containing mercury, cadmium, arsenic, etc., which are considered to be the cause of environmental pollution. requires very expensive equipment.
本発明は、処理方式としては上記従来の蒸発乾固による
方法と同一系列の蒸発濃縮方式ではあるが、従来方式の
ものにくらべて構造ならびに操作がきわめて簡単で、か
つ安価な廃液処理方法および装置を提供することを目的
としてなされたものである。Although the present invention uses an evaporative concentration method that is the same as the conventional evaporation-drying method described above, the present invention provides a waste liquid treatment method and device that is extremely simple in structure and operation, and is inexpensive compared to the conventional method. It was made with the purpose of providing.
つぎに本発明方法ならびに装置の構成につき、一実施例
を示す図面に基いて詳細に説明する。Next, the structure of the method and apparatus of the present invention will be explained in detail based on the drawings showing one embodiment.
第１図および第２図において、廃液貯槽１，１は、工場
などで発生し、管２を経て流入される廃液３を貯留する
。In FIGS. 1 and 2, waste liquid storage tanks 1, 1 store waste liquid 3 that is generated in a factory or the like and flows in through a pipe 2. As shown in FIG.
貯留された廃液３は、送込管４を経て廃液送込ポンプ５
により、フィルタ６を経て廃液供給管７から熱交換器８
に供給され、加熱管９内を上昇する。The stored waste liquid 3 is passed through a feed pipe 4 to a waste liquid feed pump 5.
, the waste liquid supply pipe 7 passes through the filter 6 to the heat exchanger 8.
and rises inside the heating tube 9.
１０は、熱交換器８内の廃液を加熱するための加熱源と
しての蒸気または温水用の流入管で、スチームインジエ
クタ１１により蒸気または温水が熱交換器８内に送り込
まれ、邪魔板に沿って流過する間に加熱管９内の廃液を
加熱し、熱交換を行なう。Reference numeral 10 denotes an inflow pipe for steam or hot water as a heating source for heating the waste liquid in the heat exchanger 8. Steam or hot water is sent into the heat exchanger 8 by a steam injector 11 and flows along the baffle plate. The waste liquid in the heating tube 9 is heated while the waste liquid is flowing through the heating tube 9, and heat exchange is performed.
その間に冷却によって生成された凝縮水は、管１２によ
り蒸留水タンク１３に導かれる。The condensed water produced by cooling during that time is led to a distilled water tank 13 via a pipe 12.
１４は蒸発タンクで、熱交換器８の上部に位置し、内部
に冷却水管巣１５よりなる凝縮器１６を内蔵する。Reference numeral 14 denotes an evaporation tank, which is located above the heat exchanger 8 and has a condenser 16 made up of a cooling water pipe bundle 15 built therein.
１７は発生蒸気と廃液とを分離するための分離器、１８
は濃縮した廃液の液面位置を検知するためのレベルスイ
ッチである。17 is a separator for separating generated steam and waste liquid, 18
is a level switch for detecting the liquid level position of concentrated waste liquid.
１９は真空ポンプで、蒸発タンク１４の内部を低圧に保
持し、廃液中の水分の蒸発を促進するために低圧雰囲気
を形成するためのものである。Reference numeral 19 denotes a vacuum pump, which maintains the inside of the evaporation tank 14 at a low pressure and forms a low-pressure atmosphere to promote the evaporation of water in the waste liquid.
２０は、凝縮器１６によって生成した復水を蒸発タンク
１４内の加熱廃液から分離し、復水導出管２１を経て蒸
留水タンク１３に取り出すための復水導出ポンプであり
、２２は、蒸発タンク１４の底部に滞留する残留廃液を
戻管２３によって廃液貯槽１に戻すための廃液取出ポン
プである。20 is a condensate discharge pump for separating the condensate generated by the condenser 16 from the heated waste liquid in the evaporation tank 14 and taking it out to the distilled water tank 13 via the condensate discharge pipe 21; 22 is the evaporation tank This is a waste liquid extraction pump for returning residual waste liquid accumulated at the bottom of the tank 14 to the waste liquid storage tank 1 through a return pipe 23.
２４は、凝縮器１６用の冷却水ポンプで、冷却タワー２
５と冷却水管巣１５との間に形成される冷却水循環系に
介設され、凝縮器１６による凝縮作用を持続的に行わせ
る。24 is a cooling water pump for the condenser 16, which is connected to the cooling tower 2.
5 and the cooling water pipe nest 15, and allows the condenser 16 to continuously perform the condensing action.
２６は廃液貯槽１に設置された可変レベルスイッチで、
廃液の液面が所定位置まで低下すると信号を発し、それ
によって装置の作動を停止せしめるためのものである。26 is a variable level switch installed in the waste liquid storage tank 1;
This is to issue a signal when the liquid level of the waste liquid drops to a predetermined level, thereby stopping the operation of the device.
以上の構成よりなる本発明装置によって廃液を処理する
作用を説明すると、まず冷却水ポンプ２４を駆動して冷
却水を凝縮器１６内に循環せしめ、流入管１０に加熱源
を導入して蒸気または温水を熱交換器８内に循環せしめ
、真空ポンプ１９を駆動して蒸発タンク１４の内部を低
圧雰囲気の状態に置く。To explain the operation of treating waste liquid with the device of the present invention having the above configuration, first, the cooling water pump 24 is driven to circulate the cooling water into the condenser 16, and a heating source is introduced into the inflow pipe 10 to generate steam or Hot water is circulated within the heat exchanger 8, and the vacuum pump 19 is driven to place the inside of the evaporation tank 14 in a low pressure atmosphere.
その状態で廃液送込ポンプ５を駆動して廃液貯槽１内の
廃液を熱交換器８に送り込むと、廃液は加熱されながら
加熱管９内を通過上昇して蒸発タンク１４に達し、それ
にともなって蒸発タンク１４内に充満した蒸発蒸気は冷
却水管巣１５と接触し、冷却されて復水せしめられ、該
復水は凝縮器１６の底部に集められて復水導出ポンプ２
０により、蒸留水タンク１３に導かれる。In this state, when the waste liquid feed pump 5 is driven to send the waste liquid in the waste liquid storage tank 1 to the heat exchanger 8, the waste liquid passes through the heating pipe 9 and rises while being heated, and reaches the evaporation tank 14. The evaporated vapor filling the evaporation tank 14 comes into contact with the cooling water pipe network 15 and is cooled and condensed.
0 leads to the distilled water tank 13.
蒸発しなかった残留廃液は廃液取出ポンプ２２によって
戻管２３を経て廃液貯槽１に戻され、該ポンプ２２と廃
液送込ポンプ５との共動によって上記一連の加熱・蒸発
のサイクルを継続して廃液に対して繰り返し行なうこと
により、廃液濃度の累進を達成する。The residual waste liquid that has not evaporated is returned to the waste liquid storage tank 1 via the return pipe 23 by the waste liquid take-out pump 22, and the series of heating and evaporation cycles described above are continued by the cooperation of the pump 22 and the waste liquid feed pump 5. By repeating the process on the waste liquid, a progressive concentration of the waste liquid is achieved.
廃液の処理量は装置の規模によって決定するが、通常一
日当り数時間の運転によって数十倍の濃度の濃縮液が得
られるように諸元を設定することが望ましい。The amount of waste liquid to be treated is determined by the scale of the equipment, but it is generally desirable to set the specifications so that a concentrated liquid several tens of times the concentration can be obtained by operating for several hours per day.
このようにして廃液貯槽１内の廃液が所定の液面まで低
下すると、濃縮を終ったものとして可変レベルスイッチ
２６により停止装置を作動せしめて全装置を自動的に停
止せしめる。When the waste liquid in the waste liquid storage tank 1 drops to a predetermined liquid level in this manner, it is assumed that concentration has been completed, and the variable level switch 26 activates the stop device to automatically stop the entire apparatus.
また、上記工程の途中において、蒸発タンク１４内の廃
液の液面レベルがレベルスイッチ１８に達すると、廃液
送込ポンプ５に指令して該ポンプ５の駆動を一時停止し
、廃液の蒸発タンク１４内における滞留量を常に一定に
制御する。Further, in the middle of the above process, when the liquid level of the waste liquid in the evaporation tank 14 reaches the level switch 18, a command is given to the waste liquid feed pump 5 to temporarily stop driving the pump 5, and the liquid level of the waste liquid in the evaporation tank 14 is The amount of stagnation inside the tank is always controlled to be constant.
本発明にかゝる廃液処理の特長は、廃液送込ポンプ５と
廃液取出ポンプ２２との関連作動によって、所定量の廃
液が所定の濃縮度に達するまで、連続して自動的に処理
操作を行なわせうろことにあり、上記に説明したように
、きわめて簡単にして安価な装置によって、重金属など
を含む廃液の処理を高能率のもとに行なうことができる
。The feature of the waste liquid treatment according to the present invention is that by the related operation of the waste liquid feed pump 5 and the waste liquid take-out pump 22, the treatment operation is continuously and automatically performed until a predetermined amount of waste liquid reaches a predetermined concentration. As explained above, waste liquid containing heavy metals can be treated with high efficiency using extremely simple and inexpensive equipment.
また、従来方式におけるように多量の放出水を出すこと
なく、安全無害でかつ有益に利用しうる純水を生成しな
がら重金属類の完全回収を安全に行ないうるという特有
の効果を有するものである。In addition, it has the unique effect of safely and completely recovering heavy metals while producing pure water that is safe, harmless, and can be used beneficially, without emitting a large amount of water as in conventional methods. .
第１図は一部を破断して示す全体装置の配置系統図、第
２図は第１図中の■−■線における断面図である。
１・・・・・・廃液貯槽、２，１２・・・・・・管、３
・・・・・・廃液、４・・・・・・送込管、５・・・・
・・廃液送込ポンプ、６・・・・・・フィルタ、７・・
・・・・廃液供給管、８・・・・・・熱交換器、９・・
・・・・加熱管、１０・・・・・・流入管、１１・・・
・・・スチームインジエクタ、１３・・・・・蒸留水タ
ンク、１４・・一・・蒸発タンク、１５・・・・・・冷
却水管巣、１６・・・・・・凝縮器、１７・・・・・・
分離器、１８・・・・・・レベルスイッチ、１９・・・
・・・真空ポンプ、２０・・・・・・復水導出ポンプ、
２１・・・・・・復水導出管、２２・・・・・・廃液取
出ポンプ、２３・・・・・・戻管、２４・・・・・・冷
却水ポンプ、２５・・・・・・冷却タワー、２６・・・
・・・可変レベルスイッチ。FIG. 1 is a partially cutaway layout diagram of the entire device, and FIG. 2 is a cross-sectional view taken along the line ■-■ in FIG. 1... Waste liquid storage tank, 2, 12... Pipe, 3
...Waste liquid, 4...Feed pipe, 5...
...Waste liquid feed pump, 6...Filter, 7...
... Waste liquid supply pipe, 8 ... Heat exchanger, 9 ...
... Heating tube, 10 ... Inflow pipe, 11 ...
... Steam injector, 13 ... Distilled water tank, 14 ... Evaporation tank, 15 ... Cooling water pipe nest, 16 ... Condenser, 17 ...・・・・・・
Separator, 18...Level switch, 19...
...Vacuum pump, 20...Condensate discharge pump,
21... Condensate outlet pipe, 22... Waste liquid extraction pump, 23... Return pipe, 24... Cooling water pump, 25...・Cooling tower, 26...
...Variable level switch.
Claims (1)
圧雰囲気内で蒸発せしめる工程と、該蒸発した蒸気を低
圧雰囲気内で冷却復水せしめる工程と、上記の加熱蒸発
によって濃縮された残留廃液を器外に取り出したのち再
び上記加熱工程に送り込む工程とを上記廃液の濃縮度が
所定値に達するまで自動的に継続循環せしめることによ
って上記廃液の濃縮を繰返し行なうとともに、冷却復水
せしめた復水を分離して取り出すようにした重金属など
を含む廃液の処理方法。 ２ 廃液貯槽から送込管を経て送り込まれる重金属など
を含む廃液と蒸気または温水よりなる加熱源とを熱交換
せしめて該廃液を加熱するための熱交換器と、熱交換器
の上部に位置して熱交換器から上昇する加熱廃液を貯留
する蒸発タンクとをそなえ、該蒸発タンクは内部を低圧
に保存するための真空ポンプをそなえるとともに内部を
冷却するための冷却水管巣よりなる凝縮器を内蔵し、該
蒸発タンク内で蒸発した加熱廃液中の水分が上記凝縮器
によって復水せしめられて生成された復水を蒸発タンク
内の加熱廃液から分離して取り出すための復水導出管を
そなえ、蒸発タンク内にあって凝縮された残留廃液を蒸
発タンクから上記廃液貯槽に戻すための戻管をそなえ、
廃液の液面位置を検知するためのレベルスイッチを上記
廃液貯槽に設けてなる重金属などを含む廃液の処理装置
。[Claims] 1. A step of heating a waste liquid containing heavy metals to evaporate water in the waste liquid in a low-pressure atmosphere, a step of cooling and condensing the evaporated vapor in a low-pressure atmosphere, and the above heating evaporation. The residual waste liquid concentrated by is taken out of the vessel and then sent to the heating step again, and the process is automatically continued and circulated until the degree of concentration of the waste liquid reaches a predetermined value, thereby repeatedly concentrating the waste liquid, and A method for treating waste liquid containing heavy metals, etc., which separates and extracts the cooled condensate. 2. A heat exchanger for heating the waste liquid by exchanging heat between the waste liquid containing heavy metals etc. sent from the waste liquid storage tank through the feed pipe and a heating source made of steam or hot water; The evaporation tank is equipped with a vacuum pump to keep the inside at low pressure and a built-in condenser consisting of a cooling water pipe network to cool the inside. and a condensate outlet pipe for separating and taking out condensate generated by condensing water in the heated waste liquid evaporated in the evaporation tank by the condenser, from the heated waste liquid in the evaporation tank, A return pipe is provided for returning condensed residual waste liquid in the evaporation tank from the evaporation tank to the waste liquid storage tank,
A treatment device for waste liquid containing heavy metals, etc., wherein the waste liquid storage tank is provided with a level switch for detecting the liquid level position of the waste liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54158441A JPS5813228B2 (en) | 1979-12-05 | 1979-12-05 | Method and equipment for treating waste liquid containing heavy metals, etc. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54158441A JPS5813228B2 (en) | 1979-12-05 | 1979-12-05 | Method and equipment for treating waste liquid containing heavy metals, etc. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5681177A JPS5681177A (en) | 1981-07-02 |
| JPS5813228B2 true JPS5813228B2 (en) | 1983-03-12 |
Family
ID=15671831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54158441A Expired JPS5813228B2 (en) | 1979-12-05 | 1979-12-05 | Method and equipment for treating waste liquid containing heavy metals, etc. |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5813228B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0433848Y2 (en) * | 1987-03-19 | 1992-08-13 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101192899B1 (en) * | 2002-11-13 | 2012-10-18 | 데카 프로덕츠 리미티드 파트너쉽 | Pressurized vapor cycle liquid distillation |
| CN103086450B (en) * | 2013-01-14 | 2016-01-13 | 无锡市星亿涂装环保设备有限公司 | A kind of atmospheric evaporation device for electroplating effluent waste water reclamation |
| CN105417604B (en) * | 2016-01-18 | 2018-11-20 | 重庆远达水务有限公司 | Utilize the method and device of fume afterheat processing desulfurization wastewater |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4897363A (en) * | 1972-03-25 | 1973-12-12 |
-
1979
- 1979-12-05 JP JP54158441A patent/JPS5813228B2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4897363A (en) * | 1972-03-25 | 1973-12-12 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0433848Y2 (en) * | 1987-03-19 | 1992-08-13 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5681177A (en) | 1981-07-02 |
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