JPH01218676A - Method for treating waste water - Google Patents
Method for treating waste waterInfo
- Publication number
- JPH01218676A JPH01218676A JP63046573A JP4657388A JPH01218676A JP H01218676 A JPH01218676 A JP H01218676A JP 63046573 A JP63046573 A JP 63046573A JP 4657388 A JP4657388 A JP 4657388A JP H01218676 A JPH01218676 A JP H01218676A
- Authority
- JP
- Japan
- Prior art keywords
- waste water
- gas
- exhaust gas
- aeration tank
- ultraviolet irradiation
- 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
- 239000002351 wastewater Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title description 7
- 150000002896 organic halogen compounds Chemical class 0.000 claims abstract description 11
- 239000003513 alkali Substances 0.000 claims abstract description 8
- 230000001678 irradiating effect Effects 0.000 claims description 5
- 238000004065 wastewater treatment Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 abstract description 24
- 238000005273 aeration Methods 0.000 abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052753 mercury Inorganic materials 0.000 abstract description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract description 2
- 230000002378 acidificating effect Effects 0.000 abstract description 2
- 238000003915 air pollution Methods 0.000 abstract description 2
- 229910000041 hydrogen chloride Inorganic materials 0.000 abstract description 2
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 abstract description 2
- 238000005422 blasting Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- CYTYCFOTNPOANT-UHFFFAOYSA-N Perchloroethylene Chemical group ClC(Cl)=C(Cl)Cl CYTYCFOTNPOANT-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229950011008 tetrachloroethylene Drugs 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000007084 catalytic combustion reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野］
本発明は有機ハロゲン化合物を含有する排水を浄化する
排水の処理方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a wastewater treatment method for purifying wastewater containing organic halogen compounds.
〔従来の技術］
一般に電子工業、精密工業等で有機溶剤、例えばトリク
ロロエチレン、テトラクロロエチレン等が多用に使用さ
れており、このような分野のＬ場等から排出される排水
にはこの種の有機ハロゲン化合物を含むものが多い。こ
のため、従来ではこの種の排水を浄化するために、処理
コストの安い曝気処理法が幅広く採用されている。[Prior art] Generally, organic solvents such as trichlorethylene and tetrachloroethylene are widely used in the electronics industry, precision industry, etc., and this type of organic halogen compound is used in wastewater discharged from L fields in such fields. Many include. For this reason, in the past, aeration treatment methods with low processing costs have been widely employed to purify this type of wastewater.
上述した従来の排水の処理方法では、排水中に含有され
る前記した有機ハロゲン化合物を曝気することは可能で
あるが、流入水の濃度の変動が大きい場合には、安定し
た処理効果を上げることが困難であり、しかも大気中に
放散されれば大気を汚染するという大きな問題がある。In the conventional wastewater treatment method described above, it is possible to aerate the above-mentioned organic halogen compounds contained in the wastewater, but when the concentration of inflow water fluctuates greatly, it is difficult to achieve a stable treatment effect. It is difficult to do so, and there is a big problem that it pollutes the atmosphere if it is released into the atmosphere.
そこで、これら有機ハロゲン化合物を含む排水について
は、燃焼処理、触媒燃焼処理等を行って無害化処理を行
っているが、この場合には設備費。Therefore, wastewater containing these organic halogen compounds is detoxified by combustion treatment, catalytic combustion treatment, etc., but in this case, equipment costs are incurred.
処理費用が高価になるという問題が生じている。A problem arises in that processing costs are high.
本発明は大気汚染を生ずることなく、しかも低コストに
処理できる排水の処理方法を提供することを目ｎ勺とし
ている。The present invention aims to provide a method for treating wastewater that does not cause air pollution and can be treated at low cost.
本発明の排水の処理方法は、有機ハロゲン化合物を含有
する排水を陽気しながら紫外線照射処理する工程と、こ
の工程で得られた排気ガスを再度紫外線照射して分解す
る工程と、この分解されたガスをアルカリ処理する工程
とを含んでいる。The wastewater treatment method of the present invention includes a step of irradiating wastewater containing organic halogen compounds with ultraviolet rays in a cheerful atmosphere, a step of decomposing the exhaust gas obtained in this step by irradiating it with ultraviolet light again, and The method includes a step of treating the gas with alkali.
〔作用］
上述した方法では、紫外線照射により排気ガスを分解し
、かつアルカリ処理することにより、有機ハロゲン化合
物を低減させる。[Function] In the method described above, organic halogen compounds are reduced by decomposing exhaust gas by irradiating it with ultraviolet rays and treating it with alkali.
次に、本発明を図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
図は本発明の一実施例のブロック図である。図において
、１はｌ・リクロロエチレン、テトラクｌ−１０エチレ
ン等の有機ハロゲン化合物を含有する排水である。この
排水ｌは、先ず曝気槽２内に導かれ、ここで送気装置３
から供給される空気が放出される散気機構４によって曝
気処理される。また、この曝気槽２内では、イ」設され
た低圧水銀ランプ５によって紫外線照射処理される。The figure is a block diagram of one embodiment of the present invention. In the figure, 1 is wastewater containing organic halogen compounds such as 1-lichloroethylene and tetrachlor-1-10 ethylene. This wastewater l is first led into the aeration tank 2, where it is sent to the air supply device 3.
The air supplied from the air diffuser 4 is aerated by the aeration mechanism 4. In addition, in this aeration tank 2, ultraviolet ray irradiation treatment is carried out by a low pressure mercury lamp 5 installed in the side.
この曝気処理と紫外線照射処理された排水は、処理水６
として排出され、一方放散された排気ガス、例えば曝気
槽２で未反応のトリクロロエチレン２テトラクロロエヂ
レンを含む排気ガス７ば、内部照射型の低圧水銀ランプ
で構成された紫外線照射処理装置８に送られて紫外線照
射される。この結果、排気ガスは分解して塩化水素等の
酸性の分解ガノ、つとなり、このガスは次いでアルカリ
洗浄装置１０に送られて無害化処理され、処理ガス１１
として出力される。This aeration-treated and ultraviolet irradiated wastewater is treated as treated water 6
On the other hand, the diffused exhaust gas, for example, the exhaust gas 7 containing unreacted trichlorethylene and tetrachloroethylene in the aeration tank 2, is sent to an ultraviolet irradiation treatment device 8 comprising an internal irradiation type low-pressure mercury lamp. and irradiated with ultraviolet rays. As a result, the exhaust gas is decomposed into acidic decomposed gas such as hydrogen chloride, and this gas is then sent to the alkaline cleaning device 10 where it is detoxified, and the treated gas 11
is output as
次に、この装置を用いた具体例を示す。Next, a specific example using this device will be shown.
即ち、９５０ｗｇ／ｆｆｉの濃度のトリクロロエチレン
を含む排水１を１２０ｊ２／Ｈｒの流量で曝気槽２に送
８ リ、空気量８５Ｎｍ３／ｆｉｒで曝気処理を行いな
がら、曝気槽２に設置した低圧水銀ランプ５で紫外線照
射処理を行った。曝気処理と紫外線照射処理後の処理水
６中のトリクロロエチレンの濃度は０．０１ｍｇ／ｌ以
下であった。That is, wastewater 1 containing trichlorethylene at a concentration of 950 wg/ffi was sent to the aeration tank 2 at a flow rate of 120j2/Hr, and while aeration was performed at an air flow rate of 85 Nm3/fir, a low-pressure mercury lamp 5 installed in the aeration tank 2 was fed. UV irradiation treatment was performed. The concentration of trichlorethylene in the treated water 6 after the aeration treatment and ultraviolet irradiation treatment was 0.01 mg/l or less.
次に、曝気処理によって発生したガス７を紫外線照射処
理装置８において紫外線照射処理を行い、続いて紫外線
照射処理によって発生した分解ガス９をアルカリ洗浄で
無害化処理した。この処理ガス１１中のトリクロロエチ
レンガスの濃度は０．５ｐｐｍ以下であった。Next, the gas 7 generated by the aeration process was subjected to ultraviolet irradiation treatment in an ultraviolet irradiation treatment device 8, and then the decomposed gas 9 generated by the ultraviolet irradiation treatment was rendered harmless by alkaline cleaning. The concentration of trichlorethylene gas in this processing gas 11 was 0.5 ppm or less.
このように、この処理方法では、排水中のトリクロロエ
チレン濃度を０．０１ｍｇ／−７！と、公共用水域への
排水の抑制に関する管理目標値０．３ｍｇ／ｆｆｉ、及
び地下浸透の防止に関する管理目標値０．０３ｍｇ／！
以下に処理でき、しかも曝気処理により発生したガスを
紫外線照射処理、アルカリ洗浄処理により大気中に放散
することなく、効率よく処理することができる。In this way, with this treatment method, the trichlorethylene concentration in the wastewater can be reduced to 0.01mg/-7! , a management target value of 0.3 mg/ffi for controlling drainage into public water bodies, and a management target value of 0.03 mg/ffi for preventing underground seepage!
The following treatment can be carried out, and the gas generated by the aeration treatment can be efficiently treated without being dissipated into the atmosphere by ultraviolet irradiation treatment and alkali cleaning treatment.
なお、本発明者が実験的に紫外線照射処理を行わずに曝
気処理のみによる排水処理を行ったところ、この排水中
に含まれるトリクロロエチレン濃度は０．］〜０．０３
ｍｇ／ ＩＬであった。In addition, when the present inventor experimentally treated wastewater by only aeration treatment without ultraviolet irradiation treatment, the concentration of trichlorethylene contained in this wastewater was 0. ]~0.03
mg/IL.
なお、曝気槽に酸化剤、例えば過酸化水素、オゾン等を
添加して処理することにより、更に高い処理効果を得る
ことも可能である。It is also possible to obtain even higher treatment effects by adding an oxidizing agent such as hydrogen peroxide or ozone to the aeration tank.
〔発明の効果］
以上説明したように本発明は、紫外線照射により排気ガ
スを分解し、かつアルカリ処理するごとにより、排水中
に含まれる有機ハロゲン化合物を大気中に放散すること
なく分解処理することか可能となり、しかも良好な処理
水質を低コストで（ｉＩることかできる効果がある。[Effects of the Invention] As explained above, the present invention decomposes exhaust gas by ultraviolet irradiation and treats it with alkali, thereby decomposing organic halogen compounds contained in wastewater without dissipating them into the atmosphere. Moreover, it has the effect of making it possible to obtain good treated water quality at low cost.
図は本発明の排水の処理方法の一実施例のブロック図で
ある。
１・・・排水、２・・・曝気槽、３・・・送気装置、４
・・・散気機構、５・・・低圧水銀ランプ、６・・・処
理水、７・・・排気ガス、８・・・紫外線照射処理装置
、９・・・分解ガス、１０・・・アルカリ洗浄装置、１
１・・・処理ガス。The figure is a block diagram of an embodiment of the wastewater treatment method of the present invention. 1... Drainage, 2... Aeration tank, 3... Air supply device, 4
... Diffusion mechanism, 5 ... Low pressure mercury lamp, 6 ... Treated water, 7 ... Exhaust gas, 8 ... Ultraviolet irradiation treatment device, 9 ... Decomposition gas, 10 ... Alkali Cleaning device, 1
1...Processing gas.
Claims (1)
紫外線照射処理する工程と、この工程で得られた排気ガ
スを再度紫外線照射して分解する工程と、この分解され
たガスをアルカリ処理する工程とを含むことを特徴とす
る排水の処理方法。1. A step of irradiating the wastewater containing organic halogen compounds with ultraviolet rays while aerating it, a step of decomposing the exhaust gas obtained in this step by irradiating it with ultraviolet light again, and a step of treating the decomposed gas with alkali. A wastewater treatment method characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63046573A JPH01218676A (en) | 1988-02-29 | 1988-02-29 | Method for treating waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63046573A JPH01218676A (en) | 1988-02-29 | 1988-02-29 | Method for treating waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01218676A true JPH01218676A (en) | 1989-08-31 |
Family
ID=12751052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63046573A Pending JPH01218676A (en) | 1988-02-29 | 1988-02-29 | Method for treating waste water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01218676A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04293517A (en) * | 1991-03-25 | 1992-10-19 | Sekimoto Yutaka | Apparatus for decomposing environmental contaminant |
| JPH05317579A (en) * | 1992-05-14 | 1993-12-03 | Renzacci Spa Ind Lavatrici | Method and device for removing from contact water chloride solvent residue formed at drying stage in cloth dry cleaning machine |
| JPH07144137A (en) * | 1993-06-01 | 1995-06-06 | Natl Res Inst For Metals | Method for decomposing halogenated hydrocarbon |
| US5478481A (en) * | 1993-09-21 | 1995-12-26 | Nec Environment Engineering Ltd. | Method of treating water containing organic chlorine compounds |
| EP1142630A2 (en) * | 2000-04-07 | 2001-10-10 | Yamaha Corporation | A effluent treating method, an effluent treating apparatus, and a cleaning apparatus using the same |
| EP1195185A1 (en) * | 2000-10-06 | 2002-04-10 | Yamaha Corporation | Method and device for treating waste liquid, solvent separator, and cleaning device using thereof |
-
1988
- 1988-02-29 JP JP63046573A patent/JPH01218676A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04293517A (en) * | 1991-03-25 | 1992-10-19 | Sekimoto Yutaka | Apparatus for decomposing environmental contaminant |
| JPH05317579A (en) * | 1992-05-14 | 1993-12-03 | Renzacci Spa Ind Lavatrici | Method and device for removing from contact water chloride solvent residue formed at drying stage in cloth dry cleaning machine |
| JP2572189B2 (en) * | 1992-05-14 | 1997-01-16 | レンザッシ ソシエタ ペル アチオニ − インダストリア ラバトリシ | Method and apparatus for removing chloride solvent residues formed during a drying stage from contact water in a garment dry cleaning machine |
| JPH07144137A (en) * | 1993-06-01 | 1995-06-06 | Natl Res Inst For Metals | Method for decomposing halogenated hydrocarbon |
| US5478481A (en) * | 1993-09-21 | 1995-12-26 | Nec Environment Engineering Ltd. | Method of treating water containing organic chlorine compounds |
| US5545316A (en) * | 1993-09-21 | 1996-08-13 | Nec Environment Engineering Ltd. | Apparatus for treating water containing organic chlorine compounds |
| EP1142630A2 (en) * | 2000-04-07 | 2001-10-10 | Yamaha Corporation | A effluent treating method, an effluent treating apparatus, and a cleaning apparatus using the same |
| EP1142630A3 (en) * | 2000-04-07 | 2003-02-05 | Yamaha Corporation | A effluent treating method, an effluent treating apparatus, and a cleaning apparatus using the same |
| EP1195185A1 (en) * | 2000-10-06 | 2002-04-10 | Yamaha Corporation | Method and device for treating waste liquid, solvent separator, and cleaning device using thereof |
| US6814875B2 (en) | 2000-10-06 | 2004-11-09 | Yamaha Corporation | Method and device for treating waste liquid, solvent separator, and cleaning device using thereof |
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