JPS63256177A - Method and apparatus for treating waste water containing mercury - Google Patents
Method and apparatus for treating waste water containing mercuryInfo
- Publication number
- JPS63256177A JPS63256177A JP9009987A JP9009987A JPS63256177A JP S63256177 A JPS63256177 A JP S63256177A JP 9009987 A JP9009987 A JP 9009987A JP 9009987 A JP9009987 A JP 9009987A JP S63256177 A JPS63256177 A JP S63256177A
- Authority
- JP
- Japan
- Prior art keywords
- mercury
- silver
- waste water
- layer
- treated
- 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
- 239000002351 wastewater Substances 0.000 title claims abstract description 24
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910052753 mercury Inorganic materials 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 9
- 229910052709 silver Inorganic materials 0.000 claims abstract description 11
- 239000004332 silver Substances 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 6
- 229910001312 Amalgam (dentistry) Inorganic materials 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 238000004065 wastewater treatment Methods 0.000 claims 1
- 229910000497 Amalgam Inorganic materials 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 239000004677 Nylon Substances 0.000 abstract description 2
- 239000004743 Polypropylene Substances 0.000 abstract description 2
- 229920006362 Teflon® Polymers 0.000 abstract description 2
- 238000007667 floating Methods 0.000 abstract description 2
- 229920001778 nylon Polymers 0.000 abstract description 2
- -1 polypropylene Polymers 0.000 abstract description 2
- 229920001155 polypropylene Polymers 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 238000012856 packing Methods 0.000 abstract 1
- 239000011347 resin Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000013522 chelant Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は、歯科治療のアマルガム排水等に含有される水
銀の処理方法ならびにその処理装置に関するもので、特
にコンパクトな装置に充填した銀充填層に該水銀含有排
水を通過させることにより処理することを特徴とするも
のである。Detailed Description of the Invention (a) Field of Industrial Application The present invention relates to a method and apparatus for treating mercury contained in amalgam wastewater, etc. used in dental treatment, and particularly relates to a method for treating mercury contained in amalgam wastewater used in dental treatment. It is characterized in that the mercury-containing wastewater is treated by passing it through the layer.
（ロ）従来の技術
従来、歯科治療に用いられるアマルガムは、Ａｇ及びＨ
ｇを主体にＣｕ 、 Ｓ、 ｎ等を混合したもので、水
銀は４０％以上も含んでいる。しかして、このアマルガ
ム治療排水中には、固形物のほかに水銀がイオン又はコ
ロイド状態で存在し、その濃度は０．０１〜３０ｍｇ／
ｉの範囲に及んでいる。(B) Conventional technology Conventionally, amalgam used in dental treatment consists of Ag and H.
It is a mixture of Cu, S, n, etc., mainly consisting of g, and contains 40% or more of mercury. Therefore, in addition to solid substances, mercury exists in the ion or colloidal state in this amalgam treatment wastewater, and its concentration is 0.01 to 30 mg/
It covers the range of i.
このアマルガム治療排水は、そのまま下水道に放出され
るため、終末処理場で発生する余剰汚泥中に儂縮される
。この汚泥は有機物を大量に含み、肥料として農地還元
ができれば良いのであるが、Ｈｇ等有害金属を含有する
ため、そのままの状態では農地還元できずにいるのが現
状である。This amalgam treatment wastewater is discharged directly into the sewer system, so it is evaporated into excess sludge generated at the final treatment plant. This sludge contains a large amount of organic matter and would be good if it could be returned to farmland as fertilizer, but because it contains harmful metals such as Hg, it cannot be returned to farmland in its current state.
このＨｇ除去のために種々の方法があるが、最も一般的
な方法としてはキレート樹脂の使用が考えられる。しか
し、この樹脂はＨｇの形態により排水規制値以下にする
のは不可能な場合が多く。There are various methods for removing Hg, but the most common method is to use a chelate resin. However, due to the form of Hg in this resin, it is often impossible to reduce the amount of wastewater below the regulated value.
また近年Ｈｇの形態に左右されないで、排水規制値以下
にする特殊なレジン（Ｒｅｓｉｎ ）も開発されて市販
されてはいるが、価格が高価であり、ＳＶ（空間速度）
が小さいという欠点があり、このために処理に際しては
大量のレジンを必要としていた。In addition, in recent years, special resins that are not affected by the form of Hg and can reduce the wastewater to below the regulated value have been developed and are on the market, but they are expensive and have low SV (space velocity).
The disadvantage is that the resin is small, and for this reason, a large amount of resin is required for processing.
（ハ）発明が解決しようとする問題点
本発明は、次のような課題を解決しようとするものであ
る。(c) Problems to be Solved by the Invention The present invention attempts to solve the following problems.
■アマルガム治療排水中のＨｇを処理することにより、
排水基準値（０，００５ｔａｇ／ ｌ ）以下にして放
流することを可能とすること。■By treating Hg in amalgam treatment wastewater,
It should be possible to discharge water at a level below the wastewater standard value (0,005 tag/l).
■従来のレジンは、５Ｖ＝５〜１０が限度であるため、
除害設備が大型化して設備機器に余分な経費を必要とす
るが、本発明は設備を小型化しかつ安価に製造可能なら
しめるものである。■ Conventional resin has a limit of 5V = 5 to 10, so
The size of the abatement equipment increases, requiring extra costs for the equipment, but the present invention allows the equipment to be made smaller and manufactured at a lower cost.
（ニ）問題を解決するための手段
本発明は、Ｈｇの吸着剤として従来のキレート樹脂に代
え、銀を用いることにより上記問題点を解決しようとす
るものである。(d) Means for Solving the Problems The present invention attempts to solve the above problems by using silver instead of the conventional chelate resin as an Hg adsorbent.
即ち、本発明は水溶液に溶解している水銀を処理するに
際し、銀を充填した層中を通過させることにより、水銀
を吸着させて処理する水銀含有排水の処理方法を提供す
るものである。That is, the present invention provides a method for treating mercury-containing wastewater, in which mercury dissolved in an aqueous solution is treated by adsorbing mercury by passing it through a layer filled with silver.
以下、本発明を実施例により説明する。The present invention will be explained below using examples.
（ホ）実施例
第１図は本発明装置の一例を示す説明図で、１は上部の
一部に被処理液流入口４を備える処理槽体で、該槽体ｌ
内の中央下部には排水中の浮遊物を除去するためポリプ
ロピレン、テフロン、ナイロン等よりなる液透過性の中
空円筒状のＳ濾過体２が立設固定され、該Ｓ濾過体２の
上部には金属銀を充填した充填層３が設けられ、更に該
充填層３の上部は被処理液排出口５として開放されてい
る。(e) Embodiment FIG. 1 is an explanatory diagram showing an example of the apparatus of the present invention, and 1 is a processing tank body having an inlet 4 for a liquid to be processed in a part of the upper part;
A liquid-permeable hollow cylindrical S filter body 2 made of polypropylene, Teflon, nylon, etc. is erected and fixed at the lower center of the interior to remove floating matter in the wastewater. A filling layer 3 filled with metallic silver is provided, and the upper part of the filling layer 3 is open as a discharge port 5 for the liquid to be treated.
従って、水銀含有排水は流入口４からＳ濾過体２内に入
り、上向き流で金属銀充填層３を通過して排出口５から
排出される。Therefore, the mercury-containing wastewater enters the S filter body 2 through the inlet 4, passes through the metal silver filling layer 3 in an upward flow, and is discharged from the outlet 5.
第２図は他の装置を示したもので、処理筒体６内を多孔
板８で仕切って金属銀の充填層３と亜鉛又は銅の少なく
とも一方の粉末を充填した充填層９とを形成し、該処理
筒体６両端部には他の排水パイプに着脱可能とする鍔部
７が設けられている。FIG. 2 shows another apparatus, in which the processing cylinder 6 is partitioned by a perforated plate 8 to form a filling layer 3 of metallic silver and a filling layer 9 filled with powder of at least one of zinc or copper. A flange 7 is provided at both ends of the processing cylinder 6 so that it can be attached to and detached from another drainage pipe.
この場合、水銀含有排水は流入口４から筒体６内に入り
、まず銀充填層３を通過してから亜鉛粉末等の充填Ｒ９
を通過させるようにする。In this case, mercury-containing wastewater enters the cylinder 6 from the inlet 4, first passes through the silver filling layer 3, and then fills R9 with zinc powder, etc.
Let it pass.
実施例１
しかして、被処理液としてＨｇ ＣｆＬｔを純水に溶解
し、Ｈｇの濃度を０．１８４ ｙａｇ／ ｌに調整した
後（ｐＨ８，５）、第１図の装置を用いてＡｇ顆粒（金
属銀）を充填した充填層３中に通したところ、Ｈｇ濃度
は排水基準値の０．００５ ｓｇ／ ｌを下回る０、０
０４鳳ｇ／ｌとなった。Example 1 After dissolving Hg CfLt in pure water as a liquid to be treated and adjusting the Hg concentration to 0.184 yag/l (pH 8.5), Ag granules ( When the water was passed through the packed bed 3 filled with metal silver), the Hg concentration was 0.0, which was below the wastewater standard value of 0.005 sg/l.
It became 04 Otori g/l.
実施例２
上記実施例１の合成液をＡｇ１１粒を充填した充填層３
中に通し、Ｓｖの変化とＨｇ量について調べた結果を第
１表に示す。Example 2 Filled bed 3 filled with 11 Ag particles containing the synthetic solution of Example 1 above
Table 1 shows the results of examining changes in Sv and amount of Hg.
（以下余白）
第 １ 表 （単位 ■ｇ／文）このよう
に、Ｈｇは瞬時にＡｇＳ’１粒に吸着し、排水基準値を
大幅に下回る結果を示した。(The following is a blank space) Table 1 (Unit: ■g/sentence) As shown, Hg was instantly adsorbed onto each grain of AgS', and the result was significantly lower than the wastewater standard value.
実施例３
上記実施例１の合成液を第２図に示す装置を用い、Ａｇ
顆粒（金属ｌＲ）の充填層３ならびに亜鉛粉末の充填層
９の順に通したところ、Ｈｇ濃度は０．００３ ｒａｇ
／見となった。Example 3 Using the apparatus shown in FIG.
When passed through the packed layer 3 of granules (metal IR) and the packed layer 9 of zinc powder in this order, the Hg concentration was 0.003 rag.
/I saw it.
（へ）発明の効果
以上の如く、本発明法によれば、排水中の水銀を排水基
準値以下に簡単に処理することができ、しかもＳｖが２
００〜３００で処理できるので、従来装置に比較すると
１７２０〜１１５０の大きさでよく、かつ安価に処理装
置を提供することができる利点がある。(f) Effects of the invention As described above, according to the method of the present invention, mercury in wastewater can be easily treated to below the wastewater standard value, and moreover, Sv is 2.
Since the processing can be performed in the range of 0.00 to 300, the processing device only needs to be sized in the range of 1720 to 1150 as compared to conventional devices, and has the advantage that the processing device can be provided at a low cost.
第１図は本発明装置の一例を示す説明図、第２図は本発
明装置の他の例を示す説明図である。
符号説明
ｌ一槽体 ２−５濾過体 ３−銀充填層４−流入口 ５
−排出口 ６−処理筒体７−鍔部 ８−多孔板 ９−亜
鉛等の充填層時 許 出 願 人 同和鉱業株式会社ｆ
ｉ１図
第２図FIG. 1 is an explanatory diagram showing one example of the device of the present invention, and FIG. 2 is an explanatory diagram showing another example of the device of the present invention. Description of symbols 1-tank body 2-5 filter body 3-silver packed layer 4-inlet 5
- Discharge port 6 - Processing cylinder 7 - Flange 8 - Perforated plate 9 - When packed with zinc, etc. Applicant Dowa Mining Co., Ltd. f
Figure i1 Figure 2
Claims (3)
とにより水銀を吸着させて処理することを特徴とする水
銀含有排水の処理方法。(1) A method for treating mercury-containing wastewater, which comprises passing the mercury-containing wastewater through a layer filled with silver to adsorb mercury.
液が通過する銀充填層とを備えてなる水銀含有排水の処
理装置。(2) A treatment device for mercury-containing wastewater, which includes a filter in a treatment tank and a silver-filled layer through which a liquid to be treated that has entered the filter passes.
一方を充填した充填層とを形成し、被処理液が上記した
銀充填層から亜鉛又は銅充填層へと通過するように構成
したことを特徴とする水銀含有排水の処理装置。(3) A silver filling layer and a filling layer filled with at least one of zinc or copper were formed in the processing cylinder, and the liquid to be treated was configured to pass from the silver filling layer to the zinc or copper filling layer. A mercury-containing wastewater treatment device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9009987A JPS63256177A (en) | 1987-04-13 | 1987-04-13 | Method and apparatus for treating waste water containing mercury |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9009987A JPS63256177A (en) | 1987-04-13 | 1987-04-13 | Method and apparatus for treating waste water containing mercury |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63256177A true JPS63256177A (en) | 1988-10-24 |
| JPH0374155B2 JPH0374155B2 (en) | 1991-11-26 |
Family
ID=13989075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9009987A Granted JPS63256177A (en) | 1987-04-13 | 1987-04-13 | Method and apparatus for treating waste water containing mercury |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63256177A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5135654A (en) * | 1984-04-30 | 1992-08-04 | Kdf Fluid Treatment, Inc. | Method for treating fluids |
| US5314623A (en) * | 1984-04-30 | 1994-05-24 | Kdf Fluid Treatment, Inc. | Method for treating fluids |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4846594A (en) * | 1971-10-20 | 1973-07-03 | ||
| JPS5871428A (en) * | 1981-10-23 | 1983-04-28 | Hitachi Ltd | Device for measuring and evaluating actually operating external force |
| JPS58174226A (en) * | 1982-04-06 | 1983-10-13 | Mitsubishi Heavy Ind Ltd | Removing method of mercury |
-
1987
- 1987-04-13 JP JP9009987A patent/JPS63256177A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4846594A (en) * | 1971-10-20 | 1973-07-03 | ||
| JPS5871428A (en) * | 1981-10-23 | 1983-04-28 | Hitachi Ltd | Device for measuring and evaluating actually operating external force |
| JPS58174226A (en) * | 1982-04-06 | 1983-10-13 | Mitsubishi Heavy Ind Ltd | Removing method of mercury |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5135654A (en) * | 1984-04-30 | 1992-08-04 | Kdf Fluid Treatment, Inc. | Method for treating fluids |
| US5275737A (en) * | 1984-04-30 | 1994-01-04 | Kdf Fluid Treatment, Inc. | Method for treating fluids |
| US5314623A (en) * | 1984-04-30 | 1994-05-24 | Kdf Fluid Treatment, Inc. | Method for treating fluids |
| US5433856A (en) * | 1984-04-30 | 1995-07-18 | Kdf Fluid Treatment, Inc. | Method for treating fluids |
| US5510034A (en) * | 1984-04-30 | 1996-04-23 | Kdf Fluid Treatment, Inc. | Method for treating fluids |
| US5599454A (en) * | 1984-04-30 | 1997-02-04 | Kdf Fluid Treatment, Inc. | Method for treating fluids |
| US5833859A (en) * | 1984-04-30 | 1998-11-10 | Kdf Fluid Treatment, Inc. | Method for treating fluids |
| US5951869A (en) * | 1984-04-30 | 1999-09-14 | Kdf Fluid Treatment, Inc. | Method for treating fluids |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0374155B2 (en) | 1991-11-26 |
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