JPS5874183A - Treatment of waste liquid - Google Patents
Treatment of waste liquidInfo
- Publication number
- JPS5874183A JPS5874183A JP17229181A JP17229181A JPS5874183A JP S5874183 A JPS5874183 A JP S5874183A JP 17229181 A JP17229181 A JP 17229181A JP 17229181 A JP17229181 A JP 17229181A JP S5874183 A JPS5874183 A JP S5874183A
- Authority
- JP
- Japan
- Prior art keywords
- boron
- soln
- waste liquid
- added
- waste
- 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
Landscapes
- Removal Of Specific Substances (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は洗浄廃液中の硼素を除去する方法に関する。[Detailed description of the invention] The present invention relates to a method for removing boron from cleaning waste liquid.
例えば焼却炉からの廃ガス、特に都市ゴミ焼却炉からの
廃ガス中には種々雑多な物質が含まれており、通常これ
らは洗浄処理されてのち大気中へ放出されるが、これに
用いた洗浄廃液の処理が必要となる。For example, waste gas from incinerators, especially municipal waste incinerators, contains a variety of miscellaneous substances, which are normally cleaned and then released into the atmosphere. Processing of cleaning waste liquid is required.
塵芥焼却炉から排出されるガス中には、有害重金属のほ
かに硼素を含む場合が多く、硼素も上記重金属と同様に
廃液中の量を規制されるようになってきたので、硼素を
含有する洗浄、廃液の処理が必要となる。In addition to harmful heavy metals, the gas emitted from garbage incinerators often contains boron, and the amount of boron in waste liquids has come to be regulated in the same way as the heavy metals mentioned above. Cleaning and treatment of waste liquid are required.
従来、このような廃液中の硼素を除去する方法としては
特定のイオン交換樹脂による吸着除去法が知られている
。Conventionally, as a method for removing boron from such waste liquid, an adsorption removal method using a specific ion exchange resin is known.
しかしこの方法は費用がかさみ、経済的でなくとくに工
業的処理には有利ではない。However, this method is expensive and not economical, especially for industrial processing.
本発明者らは廃液中における硼素を効果的かつ経済的に
除去する方法について鋭意研究の結果、無機酸の第１鉄
塩または無機酸の第１鉄塩と特定の金属イオンを硼素含
有廃液中に添加して反応せしめれば、生成する沈澱中に
Ｉｌ！章が（前記金属との化合物として）移行し、これ
を濾過などの方法で分離すれば廃液中の硼素が実質的に
除去できることを知見し、廃液の処理条件をととのえれ
ば極めて効果的に廃液中の硼素が除去でき工業化が実施
できることを確め本発明を完成した。As a result of intensive research into a method for effectively and economically removing boron from waste liquids, the present inventors found that ferrous salts of inorganic acids or ferrous salts of inorganic acids and specific metal ions were added to boron-containing waste liquids. When added to react, Il! is added to the resulting precipitate. They discovered that boron migrates (as a compound with the metals mentioned above) and that if it is separated by methods such as filtration, it is possible to substantially remove boron from the waste liquid. The present invention was completed after confirming that the boron inside could be removed and industrialization possible.
すなわち本発明の要旨は硼素を含む廃液に無酸化処理し
て生じた沈澱を分離することを特徴とする廃液の処理方
法である。That is, the gist of the present invention is a method for treating waste liquid, which is characterized by separating a precipitate produced by subjecting boron-containing waste liquid to non-oxidizing treatment.
本発明では廃液に無機酸の第１鉄塩を加えて反応せしめ
るが、この＠Ｃ，ａ 、 ＭＯ、３ａ −Ｚ ｎ −Ｐ
ｂ １Ｍ ｎ ＊ Ｎ ｉ −ＣＯ−Ｃ’および第２
鉄イオンよりなる群より選ばれた少なくとも１種の金属
イオンを無機酸′１第１鉄塩と共存さ・：。In the present invention, a ferrous salt of an inorganic acid is added to the waste liquid to cause a reaction.
b 1M n *N i -CO-C' and the second
At least one metal ion selected from the group consisting of iron ions coexists with the ferrous salt of an inorganic acid.
せて反応させればより効果が上がる。The effect will be even greater if the reaction is made to take place.
本発明で使用できる無機酸の第１鉄塩は硫酸第１鉄、塩
化第１鉄、硝酸第１鉄などであるが、それらのなかでは
硫酸第１鉄、塩化第１鉄を用いた場合に好結果が得られ
る。Ferrous salts of inorganic acids that can be used in the present invention include ferrous sulfate, ferrous chloride, and ferrous nitrate. Good results can be obtained.
次に本発明の態様をゴミ焼却炉廃ガスを洗浄した廃液を
例にとって述べる。Next, an embodiment of the present invention will be described by taking as an example a waste liquid obtained by cleaning waste gas from a garbage incinerator.
ゴミ焼却炉ｌＩ！焼ガス洗浄廃液に第１鉄塩を、含有硼
素量に応じて通常は液量１１あたり０゜０１〜２モル添
加混合し、次いで苛性ソーダ、苛性カリ、水酸化アンモ
ニーム等の苛呻アルカ惰
りを加えてＰＨを中性もしくはアルカナ１に保持し、５
０℃〜１００℃の温度で空気のごとき酸素含有ガスを譲
渡に吹き込んで酸化する。Garbage incinerator II! Add and mix ferrous salt to the waste liquid from burning gas cleaning, depending on the amount of boron contained, usually 0.01 to 2 moles per 11 of the liquid, and then add a caustic alkali such as caustic soda, caustic potash, ammonium hydroxide, etc. to maintain the pH at neutral or alkaline 1, and 5
The material is oxidized by blowing an oxygen-containing gas such as air at a temperature between 0°C and 100°C.
この反応により生成した沈澱は濾別または遠心分離によ
って液と分離すればよく、この操作により廃液中の硼素
はもとの含有量の１／１０あるいはそれ以下：：に減少
する。The precipitate produced by this reaction may be separated from the liquid by filtration or centrifugation, and by this operation the boron content in the waste liquid is reduced to 1/10 or less of the original content.
本発明によれば、：□１不硼素を含む廃水処理も経済的
な装置できわめて・効果的に工業化することができる。According to the present invention: □1 The treatment of wastewater containing unboron can also be industrialized very effectively with economic equipment.
本発明の技術はゴミ焼却炉の洗煙廃水に限定以下本発明
を実施例によって説明するが゛、これによって本発明が
限定されるものではない。The technology of the present invention is limited to smoke washing wastewater from garbage incinerators.The present invention will be explained below using examples, but the present invention is not limited thereby.
実施例１
ゴミ焼却炉から発生する燃焼ガスを洗浄した洗煙廃水中
に硼素が２０＋ｅｏ／／含まれていた。Example 1 20+eo// of boron was contained in the smoke washing wastewater obtained by washing combustion gas generated from a garbage incinerator.
これを除去するためにこの廃水中に硫酸第１鉄７水塩を
２８ｏ／／添加し、苛性ソーダにてＰＨ１０とし、７０
℃にて空気酸化を行ない生成した固形物を濾過分離した
。濾液中の硼素の含有量は０．９Ｂ／／であった。In order to remove this, ferrous sulfate heptahydrate was added to this wastewater at 28°C, and the pH was adjusted to 10 with caustic soda, and the pH was adjusted to 70°C.
Air oxidation was carried out at 0.degree. C., and the resulting solids were separated by filtration. The boron content in the filtrate was 0.9B//.
実施例２
実施例１に於て硫酸第１鉄７水塩２８ｏ／／と塩化マグ
ネシウムを２．４Ｑ／ｌ添加した以外は実施例１と同様
な方法にて処理した濾液中の硼素の含有量はＯ＊、−６
＠Ｑ／ ／であった。Example 2 Boron content in the filtrate treated in the same manner as in Example 1 except that ferrous sulfate heptahydrate 28o// and magnesium chloride were added at 2.4Q/l is O*, -6
It was @Q/ /.
実施例３
実施例１に於て硫酸第１鉄７水塩４２Ｇ／／と塩化亜鉛
を２ａｌｌ添加した以外は実施例１と同様な方法にて処
理した濾液中の硼素の含有量は０．５１！ＩＩ／／であ
った。Example 3 The boron content in the filtrate treated in the same manner as in Example 1 except that 42G// of ferrous sulfate heptahydrate and 2all of zinc chloride was added in Example 1 was 0.51. ! II//.
出願人 製鉄化学工業株式会社 代表者 佐 々 木 浩 ６−Applicant: Steel Chemical Industry Co., Ltd. Representative: Hiroshi Sasaki 6-
Claims (4)
応せしめアルカリを添加したのち、酸化処理して生じた
沈澱を分離することを特徴とする廃液の処理方法。(1) - A method for treating a waste liquid, which comprises adding a ferrous salt of an inorganic acid to a waste liquid containing ashes, causing a reaction, adding an alkali, and then separating the precipitate produced by oxidation treatment.
ばれた少くとも１種の存在下に前記処理を行なう特許請
求の範囲（１）記載の方法。(2) Ca, Mo, Ba, Zn, Pb, Mn. The method according to claim (1), wherein the treatment is performed in the presence of at least one selected from the group consisting of Ni, Qo, Cu, and ferric ions.
範囲（１）記載の方法。 ＄巴(3) The method according to claim (1), wherein the ferrous salt of an inorganic acid is ferrous sulfate. $ Tomoe
記載の方法。(4) Claim (1) in which the afore-mentioned reaction is carried out by heating
Method described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17229181A JPS5874183A (en) | 1981-10-27 | 1981-10-27 | Treatment of waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17229181A JPS5874183A (en) | 1981-10-27 | 1981-10-27 | Treatment of waste liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5874183A true JPS5874183A (en) | 1983-05-04 |
Family
ID=15939200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17229181A Pending JPS5874183A (en) | 1981-10-27 | 1981-10-27 | Treatment of waste liquid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5874183A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7373791B1 (en) | 1999-07-13 | 2008-05-20 | Ppg Industries Ohio, Inc. | Methods of forming particulate glass batch compositions |
| JP2012045461A (en) * | 2010-08-25 | 2012-03-08 | Shimizu Corp | Method for treating boron-containing water |
-
1981
- 1981-10-27 JP JP17229181A patent/JPS5874183A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7373791B1 (en) | 1999-07-13 | 2008-05-20 | Ppg Industries Ohio, Inc. | Methods of forming particulate glass batch compositions |
| JP2012045461A (en) * | 2010-08-25 | 2012-03-08 | Shimizu Corp | Method for treating boron-containing water |
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