JPS62254810A - Treatment of emulsifying oil waste water - Google Patents
Treatment of emulsifying oil waste waterInfo
- Publication number
- JPS62254810A JPS62254810A JP9895186A JP9895186A JPS62254810A JP S62254810 A JPS62254810 A JP S62254810A JP 9895186 A JP9895186 A JP 9895186A JP 9895186 A JP9895186 A JP 9895186A JP S62254810 A JPS62254810 A JP S62254810A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- waste water
- electrodes
- treatment
- additive
- 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 32
- 230000001804 emulsifying effect Effects 0.000 title abstract 5
- 239000000654 additive Substances 0.000 claims abstract description 29
- 230000000996 additive effect Effects 0.000 claims abstract description 15
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 5
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 13
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 150000002736 metal compounds Chemical class 0.000 claims description 3
- 229910021332 silicide Inorganic materials 0.000 claims description 3
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 238000005868 electrolysis reaction Methods 0.000 abstract description 8
- 230000003647 oxidation Effects 0.000 abstract description 6
- 238000007254 oxidation reaction Methods 0.000 abstract description 6
- 239000003995 emulsifying agent Substances 0.000 abstract description 5
- 239000011575 calcium Substances 0.000 abstract description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract description 2
- 239000011777 magnesium Substances 0.000 abstract description 2
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 150000001455 metallic ions Chemical class 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 51
- 238000000926 separation method Methods 0.000 description 11
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 10
- YADSGOSSYOOKMP-UHFFFAOYSA-N dioxolead Chemical compound O=[Pb]=O YADSGOSSYOOKMP-UHFFFAOYSA-N 0.000 description 8
- 239000010730 cutting oil Substances 0.000 description 7
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 6
- 239000000395 magnesium oxide Substances 0.000 description 6
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000008151 electrolyte solution Substances 0.000 description 4
- 229910052697 platinum Inorganic materials 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000010731 rolling oil Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000003411 electrode reaction Methods 0.000 description 2
- 238000005188 flotation Methods 0.000 description 2
- 150000004679 hydroxides Chemical class 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 229910000789 Aluminium-silicon alloy Inorganic materials 0.000 description 1
- 229910004709 CaSi Inorganic materials 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- -1 oxides Chemical class 0.000 description 1
- 229910003446 platinum oxide Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は切削油、圧延油、脱脂油等の油分が乳化状態で
含まれる乳化油排水から電解によって油分を分離除去す
る方法である。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention is a method for separating and removing oil by electrolysis from emulsified oil waste water containing oil such as cutting oil, rolling oil, degreased oil, etc. in an emulsified state.
機械、金属加工工場等から排出される含油排水には切削
油、圧延油等が含まれている。かかる含油排水は乳化剤
によって高度に乳化しているので、油水分離、活性汚泥
処理、吸着処理等、従来の方法によって油分を分離除去
することは極めて困難であった。加えて機械、金属加工
工場等は非用水型産業であって、排水の絶対量が少ない
ために、他の排水による乳化油排水の希釈効果は全く期
待できず、乳化油排水に対する早急な対策が要望されて
いた。乳化油排水の処理が困難な原因は、排水中の油分
が乳化剤によって乳化分散しており、油分粒径はほとん
ど１０μ以下で極めて安定な状態を保っており、油分が
水相から分離しないためである。Oil-containing wastewater discharged from machinery, metal processing factories, etc. contains cutting oil, rolling oil, etc. Since such oil-containing wastewater is highly emulsified by an emulsifier, it has been extremely difficult to separate and remove the oil by conventional methods such as oil-water separation, activated sludge treatment, and adsorption treatment. In addition, machinery, metal processing factories, etc. are industries that do not use water, and the absolute amount of wastewater is small, so we cannot expect any effect of diluting emulsified oil wastewater with other wastewater, and urgent measures are needed to prevent emulsified oil wastewater. It was requested. The reason why it is difficult to treat emulsified oil wastewater is that the oil in the wastewater is emulsified and dispersed by an emulsifier, and the oil particle size remains extremely stable with most oil particles being less than 10 μm, so the oil does not separate from the aqueous phase. be.
従って、油水分離や吸着処理等の通常の物理的な手段で
は処理することができない。また、薬剤を用いて乳化状
態を破壊する方法は原理的には可能であっても加えた薬
剤の二次処理の問題、および乳化油排水の組成が複雑で
あるために薬剤の選定条件が複雑になる等の理由で実現
は非常に困難である。また、電極反応のみを利用した方
法は二次生成物の発生がなく、良い処理結果が得られる
が、処理に長時間を要し、電力の消費量が多い問題があ
る。Therefore, it cannot be treated by ordinary physical means such as oil/water separation or adsorption treatment. In addition, although it is possible in principle to destroy the emulsified state using chemicals, there are problems with secondary treatment of the added chemicals, and the composition of emulsified oil wastewater is complex, making the conditions for selecting chemicals complicated. It is extremely difficult to realize this for several reasons. Furthermore, methods using only electrode reactions do not generate secondary products and can provide good treatment results, but they have the problem of requiring a long time for treatment and consuming a large amount of power.
本発明は上記従来の欠点を解消すべくなされたものであ
り、少ない電力で短時間に効果的に油分を分離除去する
ことができる方法を提供することを目的とするものであ
る。The present invention has been made in order to eliminate the above-mentioned conventional drawbacks, and an object of the present invention is to provide a method that can effectively separate and remove oil in a short time with less electric power.
上記目的を達成する本発明の乳化油排水の処理方法は、
乳化油排水を電極間に置き、この乳化油排水に難溶性多
価金属化合物からなる添加剤を混合した後、この電極間
に通電し前記乳化油排水中の油分を分離除去することを
特徴とするものである。The method for treating emulsified oil wastewater of the present invention that achieves the above object is as follows:
Emulsified oil wastewater is placed between electrodes, an additive made of a poorly soluble polyvalent metal compound is mixed with the emulsified oil wastewater, and then electricity is applied between the electrodes to separate and remove the oil in the emulsified oil wastewater. It is something to do.
本発明において電解処理の対象となる乳化油排水を形成
する油分は、いかなる種類であっても良く、前記した切
削油、圧延油等を含めて乳化状態にある油分を処理対象
とすることができる。In the present invention, the oil forming the emulsified oil wastewater to be subjected to electrolytic treatment may be of any type, and oil in an emulsified state, including the above-mentioned cutting oil, rolling oil, etc., can be treated. .
本発明の方法は通常の電解の場合と同様に乳化油排水を
電極を備えた電解槽に入れ、これに難溶性多価金属化合
物からなる添加剤を加え、よく分散させてた状態で、電
極間に通電することにより行なわれる。本発明の方法に
おいては、電極は不溶性の電導体であればいかなるもの
でも使用することができるが、Ｗ＆素通過電圧高い陽極
、たとえば白金、二酸化鉛（ｐｂｏ□）、炭素、フェラ
イト等を使用することが好ましい。また、ここで使用す
る添加剤はカルシウム、マグネシウム、アルミニウム、
亜鉛、鉄等の多価金属の酸化物、水酸化物および珪化物
等難溶性の化合物が有効である。添加剤の粒径は、種類
によって異なるが、一般にはｏ、ｏｏｓ〜３關、好まし
くは０．０１〜０ 、５ｍｍであり、その添加量は、排
水ＩＱ中ｏ、ｏｏｓ〜５ｇ、好ましくは０．０５〜ｏ、
ｓ ｇである。実施に当っては、乳化油排水にこれらの
添加剤を加え、撹拌してＳ濁状態としてから一定時間、
電解し、電解後処理水を静置すると、添加剤の一部と反
応した油分はスカムとなって水面上に浮上し分離する。In the method of the present invention, emulsified oil waste water is placed in an electrolytic tank equipped with electrodes, and an additive consisting of a poorly soluble polyvalent metal compound is added thereto, and in a well-dispersed state, emulsified oil waste water is placed in an electrolytic tank equipped with an electrode. This is done by passing electricity between them. In the method of the present invention, any insoluble conductor can be used as the electrode, but it is preferable to use an anode with a high W& element passing voltage, such as platinum, lead dioxide (pbo□), carbon, ferrite, etc. It is preferable. Additionally, the additives used here include calcium, magnesium, aluminum,
Slightly soluble compounds such as oxides, hydroxides, and silicides of polyvalent metals such as zinc and iron are effective. The particle size of the additive varies depending on the type, but is generally o, oos to 3 mm, preferably 0.01 to 0,5 mm, and the amount added is o, oos to 5 g, preferably 0. .05~o,
It is sg. In implementation, these additives are added to the emulsified oil wastewater, stirred to form an S cloudy state, and then left for a certain period of time.
When electrolyzed and post-electrolyzed treated water is allowed to stand still, the oil that has reacted with some of the additives becomes scum that floats to the surface of the water and separates.
このスカムは水面をかきとるだけで容易に除去すること
ができ、脱水性。This scum can be easily removed by simply scraping the water surface, and is dehydrating.
濾過性も良好である。The filterability is also good.
また、未反応の添加剤は底部に沈殿してくるので、分離
後再使用することができる。また陽極の消耗、電解生成
物の付着はなく、長期間の安定した連続運転が可能であ
る。電解処理温度は通常。In addition, since unreacted additives settle to the bottom, they can be reused after separation. In addition, there is no wear of the anode or adhesion of electrolytic products, and stable continuous operation for a long period of time is possible. Electrolytic treatment temperature is normal.
常温〜６０℃であり、電解電圧は通常５〜２０ボルトで
ある。また乳化油排水中の油分濃度は特に限定されない
が、一般には１００〜５０００ｐｐｍ程度である。The temperature is room temperature to 60°C, and the electrolytic voltage is usually 5 to 20 volts. Further, the oil concentration in the emulsified oil wastewater is not particularly limited, but is generally about 100 to 5000 ppm.
本発明の方法は、従来の排水処理方法とは異なり電解酸
化、添加剤イオンによる凝集作用１発生ガスによる浮上
分離作用等が総合されて油分を分離除去する方法である
。すなわち、電解酸化による乳化剤の界面活性の下、添
加剤の電解酸化によって溶出した多価金属イオンの凝集
作用、電解によって発生した酸素ガス、水素ガスによる
油分の浮上分離作用が総合され相乗効果を発揮して能率
よく乳化油排水から油分を分離することができる。The method of the present invention is different from conventional wastewater treatment methods in that it separates and removes oil by integrating electrolytic oxidation, coagulation action by additive ions, flotation separation action by generated gas, etc. In other words, under the surface activity of the emulsifier caused by electrolytic oxidation, the aggregation effect of polyvalent metal ions eluted by electrolytic oxidation of additives, and the flotation and separation effect of oil by oxygen gas and hydrogen gas generated by electrolysis are combined to produce a synergistic effect. It is possible to efficiently separate oil from emulsified oil wastewater.
電解酸化だけの処理と比較すると１／１０〜１／１００
０の処理時間または電力で同程度以上の除去率に達する
。また添加剤だけの処理と比較すると数倍の除去率を示
す。また本発明の方法によれば、前記の効果が複合され
ているので、乳化剤の種類、油分の種類にかかわらず実
施することができる。更に本発明によれば、処理によっ
て発生する油分を含むスカムは濾過性、脱水性が良好で
容易に分離除去することができる。また添加剤は反応後
撹拌を停止すると底部に沈殿してくるので回収して再利
用することができる。更にまた、処理能力を電圧および
電流によって自由に制御できるので、処理中に排水量や
排水中の油分が変化しても、予め、設定した基準の処理
が得られるように容易に対応することができる。1/10 to 1/100 compared to electrolytic oxidation alone
A removal rate of the same level or higher is achieved with 0 processing time or power. Furthermore, compared to treatment using only additives, the removal rate is several times higher. Further, according to the method of the present invention, since the above-mentioned effects are combined, it can be carried out regardless of the type of emulsifier and the type of oil content. Further, according to the present invention, the scum containing oil produced by the treatment has good filterability and dehydration properties and can be easily separated and removed. Furthermore, when the stirring is stopped after the reaction, the additives will precipitate at the bottom, so they can be recovered and reused. Furthermore, since the processing capacity can be freely controlled by voltage and current, even if the amount of wastewater or the oil content in the wastewater changes during treatment, it can be easily adjusted to ensure that the treatment meets the standards set in advance. .
以下、本発明を実施例により更に詳細に説明する。 Hereinafter, the present invention will be explained in more detail with reference to Examples.
実施例１
水で希釈して０．２ｇＩＱの乳化油分濃度にしたＪＩＳ
Ｉ種１号水溶性切削油を乳化油排水として用い、その１
０軸Ｑを電解槽に入れ、添加剤としてＣａＳｉ。Example 1 JIS diluted with water to have an emulsified oil concentration of 0.2gIQ
Using Class I No. 1 water-soluble cutting oil as emulsified oil drainage, Part 1
Place the 0 axis Q in an electrolytic bath and add CaSi as an additive.
の粉末（６４メツシユ以下）５０ｍ ｇを加えた。電極
として、陽極、陰極共に２■Ｘ２Ｃ１１の白金板を用い
、撹拌しながら、０．２Ａの直流を通電し、２時間電解
処理した。電解電圧は１９．８〜１６Ｖであった。初め
乳濁していた電解液は電解処理よって次第に透明度を増
し、反応終了後撹拌を停止すると、ただちに油分を含む
スカムは電解液の表面に浮上分離し、また未反応の添加
剤は比重が大きいので底部に沈降分離して電解液は完全
に無色透明になった。この結果、水溶性切削油の油分お
よび界面活性剤等の全有機物に対応する全有機炭素意（
以下、ＴＯＣと記す）は電解前の１５９ｐｐｍから、２
時間電解処理後に１９．４ｐρｍとなり、その除去率は
８７．８％であった。この処理によって発生したスカム
は、その大部分が油分で一部Ｃａ等の水酸化物を含んで
いるが、電解液の表面をかきとることによって大部分を
分離除去することができ、さらに濾過等通常の分離操作
を行なえば容易かつ完全に油分を分離除去することがで
きた。また底部に沈降分離した添加剤は、回収して再使
用することができ、電極には電極反応を阻害する物質は
全く付着せず、連続して電解処理に使用することができ
た。なお、添加剤を加えず他は全く同一試料、同一条件
で２時間電解処理をした場合はＴＯＣ除去率は２８．２
％であり、また通電せずに添加剤を加えて２時間撹拌し
て処理した場合のＴＯＣ除去率は３６．０％であって、
充分な処理効果をあげることはできない。50 mg of powder (64 mesh or less) was added. As electrodes, 2×2C11 platinum plates were used for both the anode and the cathode, and while stirring, a direct current of 0.2 A was applied to conduct electrolytic treatment for 2 hours. The electrolysis voltage was 19.8-16V. The electrolytic solution, which was initially emulsified, gradually becomes transparent through the electrolytic treatment, and when stirring is stopped after the reaction is complete, the scum containing oil immediately floats to the surface of the electrolytic solution, and unreacted additives have a high specific gravity. The electrolyte solution became completely colorless and transparent after sedimentation and separation at the bottom. As a result, total organic carbon (
(hereinafter referred to as TOC) from 159 ppm before electrolysis to 2
After time electrolytic treatment, the amount was 19.4 ppm, and the removal rate was 87.8%. The scum generated by this process is mostly oil and contains some hydroxides such as Ca, but most of it can be separated and removed by scraping the surface of the electrolyte, and it can be further removed by filtration. The oil content could be easily and completely separated and removed by normal separation operations. Furthermore, the additives that had settled and separated at the bottom could be recovered and reused, and the electrodes could be used continuously for electrolytic treatment without any substances that would inhibit electrode reactions attached to them. In addition, when the same sample was electrolytically treated for 2 hours under the same conditions without adding any additives, the TOC removal rate was 28.2.
%, and the TOC removal rate when treated by adding additives and stirring for 2 hours without applying electricity was 36.0%,
It is not possible to achieve sufficient processing effects.
実施例２
実施例１において、陽極を二酸化鉛、陰極をステンレス
板に代えた以外は同一試料、同一条件で２時間電解処理
を行なった。この結果、ＴＯＣは電解前の１５９ｐｐｍ
から、２時間電解処理後２２．１ＰＰＩ１１となり、そ
の除去率は８６．１″１で、実施例１とほぼ同等な処理
結果が得られた。油分の分離、電解液の透明化等。Example 2 In Example 1, the same sample was electrolyzed for 2 hours under the same conditions except that the anode was replaced with lead dioxide and the cathode was replaced with a stainless steel plate. As a result, TOC was 159ppm before electrolysis.
After 2 hours of electrolytic treatment, the PPI was 22.1 PPI11, and the removal rate was 86.1''1, giving almost the same treatment results as Example 1. Separation of oil, transparency of electrolyte, etc.
全般的な反応の状況は実施例１の場合とほぼ同等で、電
解電圧は１６．３〜１２Ｖであった。The overall reaction situation was almost the same as in Example 1, and the electrolytic voltage was 16.3 to 12V.
実施例３
実施例１と同一試料で添加剤と電極を代えて電解処理し
た結果をまとめて第１表に示す。Example 3 Table 1 summarizes the results of electrolytic treatment of the same sample as in Example 1 using different additives and electrodes.
試 料： ＪＩＳＩ種１号水溶性切削油０．２ｇ／
Ｑ。Sample: JISI class 1 water-soluble cutting oil 0.2g/
Q.
ＴＯＣ１５９ｐｐｍ
処理量： １００ａＱ
添加剤量： ５０ｍｇ
電極面積＝ ２■×２０
電 流： ０．２Ａ
電解時間： ２時間
第１表
上記第１表に示すように、Ｃａ５ｉｚとＭｇ５ｉＦｅを
添加剤に用いた場合は、白金と二酸化鉛の電極の違いに
よる処理効果の差はほとんどないが、ＡｌＳｉを添加剤
に用いた場合は、二酸化鉛電極の方がやや処理効果がよ
かった。その他スカムの発生、油分の分離、未反応の添
加剤の沈降分離等全般的な反応の情況は実施例１の場合
とほぼ同等で効果的に油分を分離除去することができた
。TOC 159ppm Processing amount: 100aQ Additive amount: 50mg Electrode area = 2×20 Current: 0.2A Electrolysis time: 2 hours Table 1 As shown in Table 1 above, when Ca5iz and Mg5iFe are used as additives There is almost no difference in the treatment effect due to the difference between platinum and lead dioxide electrodes, but when AlSi was used as an additive, the treatment effect was slightly better with the lead dioxide electrode. Other general reaction conditions such as generation of scum, oil separation, and sedimentation of unreacted additives were almost the same as in Example 1, and oil could be effectively separated and removed.
実施例４
水で希釈して１．０ｇ／Ｑの乳化油分濃度にしたＪＩＳ
Ｉ種１号水溶性切削油を乳化油排水として用いその１０
０ａ＋ ｎを電解槽に入れ、添加剤として酸化マグネシ
ウム（ＭｇＯ）粉末５ｍｇまたは１０ｍｇを加えた。Example 4 JIS diluted with water to give an emulsified oil concentration of 1.0 g/Q
Using Class I No. 1 water-soluble cutting oil as emulsified oil wastewater Part 10
0a+n was placed in an electrolytic cell, and 5 mg or 10 mg of magnesium oxide (MgO) powder was added as an additive.
電極として陽極陰極共に白金板を用い電解液を撹拌しな
がら０．２Ａの直流を通電し、１０〜３０分電解処理し
た。その結果を第２表に示す。Platinum plates were used as electrodes for both the anode and the cathode, and a direct current of 0.2 A was applied while stirring the electrolytic solution for electrolytic treatment for 10 to 30 minutes. The results are shown in Table 2.
試 料： ＪＩＳＩ種１号水溶性切削油１．０ｇ／
Ｑ、ＴＯＣ８６７ｐｐｍ
処理量： ｌｏＯ＋ｉΩ
添加剤： 酸化マグネシウム（ＭｇＯ）電 極： 陽
極、陰極共に白金板
電極面積： ２■Ｘ２Ｇｌ
電 流： ０．２Ａ
第２表
上記第２表に示すようにＭｇＯを添加剤に用いた場合は
、 ５ｍｇの添加量、ｌ ０ｍ１ｎの電解時間で充分に
油分を分離除去することができた。反応終了後撹拌を停
止すると、油分を含むスカムは電解液の表面に浮上分離
し、未反応のＭｇＯは沈降するが、珪化物を用いた場合
より分離が不完全であるので、通常の濾過等の分離操作
を行なう必要がある。スカム等の脱水性は良好であって
、濾過によって容易に油分を分離除去することができた
。Sample: JISI class 1 water-soluble cutting oil 1.0g/
Q, TOC867ppm Processing amount: loO+iΩ Additive: Magnesium oxide (MgO) Electrode: Platinum plate electrode area for both anode and cathode: 2×2Gl Current: 0.2A Table 2 MgO was added as shown in Table 2 above. When used as an agent, the oil content could be sufficiently separated and removed with an addition amount of 5 mg and an electrolysis time of 10 ml. When stirring is stopped after the reaction is complete, scum containing oil floats to the surface of the electrolyte and unreacted MgO settles, but the separation is more incomplete than when using silicide, so normal filtration, etc. It is necessary to perform a separation operation. The dewaterability of the scum and the like was good, and the oil content could be easily separated and removed by filtration.
Claims (1)
多価金属化合物からなる添加剤を加えた後、該電極間に
通電して前記乳化油排水中の油分を分離除去することを
特徴とする乳化油排水の処理方法。 ２）添加剤がＣａ、Ｍｇ、Ａｌ又はＦｅの酸化物である
特許請求の範囲第１項記載の処理方法。 ３）添加剤がＣａ、Ｍｇ、Ａｌ又はＦｅの珪化物である
特許請求の範囲第１項記載の処理方法。 ４）添加剤がＣａ、Ｍｇ、Ａｌ又はＦｅの水酸化物であ
る特許請求範囲第１項記載の処理方法。[Scope of Claims] 1) Emulsified oil wastewater is placed between electrodes, an additive made of a poorly soluble polyvalent metal compound is added to the emulsified oil wastewater, and then electricity is applied between the electrodes to remove the emulsified oil wastewater. A method for treating emulsified oil wastewater characterized by separating and removing oil. 2) The treatment method according to claim 1, wherein the additive is an oxide of Ca, Mg, Al or Fe. 3) The treatment method according to claim 1, wherein the additive is a silicide of Ca, Mg, Al, or Fe. 4) The treatment method according to claim 1, wherein the additive is a hydroxide of Ca, Mg, Al or Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9895186A JPS62254810A (en) | 1986-04-28 | 1986-04-28 | Treatment of emulsifying oil waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9895186A JPS62254810A (en) | 1986-04-28 | 1986-04-28 | Treatment of emulsifying oil waste water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62254810A true JPS62254810A (en) | 1987-11-06 |
| JPH0534041B2 JPH0534041B2 (en) | 1993-05-21 |
Family
ID=14233403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9895186A Granted JPS62254810A (en) | 1986-04-28 | 1986-04-28 | Treatment of emulsifying oil waste water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62254810A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4827565A (en) * | 1971-08-13 | 1973-04-11 | ||
| JPS4933469A (en) * | 1972-07-28 | 1974-03-27 | ||
| JPS4936582A (en) * | 1972-08-08 | 1974-04-04 |
-
1986
- 1986-04-28 JP JP9895186A patent/JPS62254810A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4827565A (en) * | 1971-08-13 | 1973-04-11 | ||
| JPS4933469A (en) * | 1972-07-28 | 1974-03-27 | ||
| JPS4936582A (en) * | 1972-08-08 | 1974-04-04 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0534041B2 (en) | 1993-05-21 |
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| EXPY | Cancellation because of completion of term |