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1. 发明专利

JP2012166144A Method for recovering dissolved iron from wastewater containing many kinds of metal ion 有权
标题翻译：从含有多种金属离子的废水中回收溶解铁的方法
公开(公告)号：JP2012166144A
公开(公告)日：2012-09-06
申请号：JP2011029189
申请日：2011-02-14
申请人： Nippon Steel Corp , Nittetsu Kankyo Engineering Kk , 新日本製鐵株式会社 , 日鉄環境エンジニアリング株式会社
发明人： KIMURA TETSURO , KANEMORI NOBUYUKI , SATO HIROKI , SHIRAISHI MITSUHIRO , MORIKAZU SHINGO , ISHIMARU SOICHI , OKAMOTO YOSHIHIRO
IPC分类号： C02F1/72 , B01J23/745 , C02F1/52 , C02F1/64 , C02F1/76 , C02F1/78
摘要： PROBLEM TO BE SOLVED: To provide a method for recovering dissolved iron in waste water, by which the interfusion of components other than iron is suppressed, moreover, sludge having low water content and excellent dewaterability can be obtained and dissolved iron in wastewater can be recovered and used, when the raw water is wastewater containing many kinds of metal ions mainly including dissolved iron particularly ferrous iron.SOLUTION: The raw water is introduced into a neutralization oxidation tank, pH of the raw water is adjusted between 3.5 and 6.0, δ-FeO(OH) is added into the neutralization oxidation tank as a catalyst, dissolved iron is subjected to oxidation treatment by an oxidizing agent to produce metal hydroxide mainly including iron(III) hydroxide particles and then metal hydroxide-containing sludge is separated by precipitation in a precipitation tank arranged at a downstream side of the neutralization oxidation tank and further a return process for returning a part of the sludge separated by precipitation to the neutralization oxidation tank is provided. In that process, a part of the sludge separated by precipitation is introduced into a sludge reaction tank, the sludge is treated by adding an alkali agent into the reaction tank and the raw water is continuously treated while returning treated sludge into the neutralization oxidation tank. Thus the method for recovering dissolved iron from wastewater containing many kinds of metal ions is provided.
摘要翻译：要解决的问题：提供一种在废水中回收溶解铁的方法，通过该方法可以抑制除铁以外的成分的混合物，并且可以获得具有低含水量和优异脱水性的污泥并将废铁溶解在废水中可以回收利用，当原水是含有多种金属离子的废水，主要包括溶解铁，特别是二价铁。
解决方案：将原水引入中和氧化槽中，将原水的pH调节至3.5至6.0之间，将δ-FeO（OH）作为催化剂加入到中和氧化罐中，将溶解的铁通过氧化剂氧化处理以产生主要包含铁（III）氢氧化物颗粒的金属氢氧化物，然后通过在布置在中和氧化罐的下游侧的沉淀槽中沉淀分离，并进一步返回返回过程提供了通过沉淀分离到中和氧化池中的一部分污泥。在此过程中，通过沉淀分离出的一部分污泥被引入污泥反应罐，通过向反应槽中加入碱剂处理污泥，并将处理过的污泥返回到中和氧化池中，连续处理原水。因此，提供了从含有多种金属离子的废水中回收溶解铁的方法。版权所有（C）2012，JPO＆INPIT

2. 发明专利

JP2011224466A Metal ion-containing wastewater treatment method 有权
标题翻译：含金属废水处理方法
公开(公告)号：JP2011224466A
公开(公告)日：2011-11-10
申请号：JP2010096656
申请日：2010-04-20
申请人： Nippon Steel Corp , Nittetsu Kankyo Engineering Kk , 新日本製鐵株式会社 , 日鉄環境エンジニアリング株式会社
发明人： SHINOZAKI TAKAYUKI , TOYODA HIROYOSHI , MORIKAZU SHINGO , HIRATA SHOICHI
IPC分类号： C02F1/74 , C01G49/02 , C02F1/52
摘要： PROBLEM TO BE SOLVED: To provide a metal ion-containing wastewater treatment method which can efficiently separate dissolved iron and the like from the beginning of start-up, is easy in sludge treatment, and suppresses increase of equipment cost and running cost, in treatment of wastewater mainly containing dissolved iron.SOLUTION: The metal ion-containing wastewater treatment method includes a treatment system for treating raw water mainly containing dissolved iron, and a preparation system of δ-FeO(OH) for generating fine crystal particles of δ-FeO(OH) used in the treatment system. The treatment system has a reaction process for performing the oxidation treatment of the raw water in a reaction tank to generate metal hydroxides including iron hydroxides, and a separation process for settling and separating the iron hydroxides in a settling tank. When the treatment system is started up, an alkali agent and an oxidizing agent are added to an iron-based reagent containing divalent iron and they are mixed and reacted to generate the fine crystal particles of δ-FeO(OH) in the preparation system of δ-FeO(OH). The fine crystal particles are immediately added into the reaction tank to be used as an oxidation catalyst, and oxidative treatment in the reaction process is performed by air oxidation.
摘要翻译：要解决的问题：为了提供从启动开始就可以有效地分离溶解铁等的含金属离子的废水处理方法，污泥处理容易，抑制了设备成本和运行成本的增加，主要处理含有溶解铁的废水。解决方案：含金属离子的废水处理方法包括用于处理主要含有溶解铁的原水的处理系统，以及用于产生δ-FeO（OH）的细晶粒子的δ-FeO（OH）的制备系统在治疗系统中。处理系统具有对反应罐中的原水进行氧化处理以产生包括氢氧化铁的金属氢氧化物的反应方法和用于在沉降槽中沉淀和分离氢氧化铁的分离方法。当处理系统启动时，将碱剂和氧化剂加入到含有二价铁的铁基试剂中，并将其混合并反应，以在制备体系中产生δ-FeO（OH）的细晶粒子 δ-的FeO（OH）。立即将微细晶体颗粒加入到反应槽中以用作氧化催化剂，并通过空气氧化进行反应过程中的氧化处理。版权所有（C）2012，JPO＆INPIT

3. 发明专利

JP2012228675A Method for treating metal ion-containing wastewater 有权
标题翻译：用于处理含金属废水的方法
公开(公告)号：JP2012228675A
公开(公告)日：2012-11-22
申请号：JP2011099816
申请日：2011-04-27
申请人： Nippon Steel Corp , 新日本製鐵株式会社 , Nittetsu Kankyo Engineering Kk , 日鉄環境エンジニアリング株式会社
发明人： KIMURA TETSURO , KANEMORI NOBUYUKI , KATO TOSHIRO , SATO HIROKI , SHIRAISHI MITSUHIRO , MORIKAZU SHINGO , ISHIMARU SOICHI , OKAMOTO YOSHIHIRO
IPC分类号： C02F3/34 , C02F3/00
CPC分类号： Y02W10/37
摘要： PROBLEM TO BE SOLVED: To improve oxidizing capability of bivalent iron ions by iron-oxidizing bacteria by a method except a method for enhancing slurry concentration inside a reaction tank without adding microbe carriers in a method for treating metal ion-containing wastewater, and to provide sludge having rich concentration and excellent dewaterability.SOLUTION: In this method for treating the metal ion-containing wastewater, the metal ion-containing wastewater containing at least bivalent iron ions and crystal particles of δ-FeO (OH) are supplied into a first tank 110 wherein the iron-oxidizing bacteria exist; the bivalent iron ions inside the first tank 110 are oxidized into trivalent iron ions by the iron-oxidizing bacteria having pH of 3.0 or above and 5.0 or below to precipitate them as iron hydroxide particles, so that slurry containing the iron hydroxide particles is generated; the slurry inside the first tank 110 is transferred to a second tank 130; the sludge containing the iron hydroxide particles is settled and separated from the slurry inside the second tank 130, and at least a part of the settled and separated sludge is collected.
摘要翻译：待解决的问题：通过除了在含金属离子废水处理方法中不添加微生物载体的反应槽内提高浆料浓度的方法之外，通过除铁氧化细菌以外的方法提高二价铁离子的氧化能力，并提供浓缩浓度和脱水性优异的污泥。解决方案：在用于处理含金属离子的废水的方法中，含有至少二价铁离子的含金属离子的废水和δ-FeO（OH）的结晶颗粒被供应到第一罐110中，氧化细菌存在; 通过pH为3.0以上且5.0以下的铁氧化细菌将第一罐110内的二价铁离子氧化为三价铁离子，将其作为氢氧化铁粒子析出，生成含有氢氧化铁粒子的浆料; 第一罐110内的浆料被转移到第二罐130; 将含有氢氧化铁颗粒的污泥从第二罐130内的浆料中沉淀分离，并收集至少一部分沉淀分离的污泥。版权所有（C）2013，JPO＆INPIT

4. 发明专利

JP2012239955A Method for treating cyan-containing waste liquid, and chemical used therefor 有权
标题翻译：用于处理含有氰化物的废液的方法及其使用的化学品
公开(公告)号：JP2012239955A
公开(公告)日：2012-12-10
申请号：JP2011110396
申请日：2011-05-17
申请人： Nittetsu Kankyo Engineering Kk , 日鉄環境エンジニアリング株式会社
发明人： MORIKAZU SHINGO , ICHIKAWA KOHEI
IPC分类号： C02F1/58 , C02F1/28
摘要： PROBLEM TO BE SOLVED: To provide a more excellent method for treating cyan-containing waste liquid by which a poisonous cyan component can be effectively removed so as to make no cyan component remain, which has higher treatment safety than conventional methods and which is convenient and can be industrially utilized, and further to provide chemicals used therefor.SOLUTION: The method for treating cyan-containing waste liquid is characterized in that at least one compound chosen from a group composed of a compound having an aldehyde group or a keto group and a hydrophobic group, a compound having a carboxyl group and a hydrophobic group, glyoxylic acid or its ester, ascorbic acid or its optical isomer, lignin or its derivative, humic acid or its derivative and reducing sugar is added to cyan-containing waste liquid and the waste liquid is held at pH 5 to 12 to cause reaction of cyan in the waste liquid with the chosen compound to produce cyanohydrin and the cyanohydrin is adsorbed to suspended matter and then adsorbed material is subjected to solid-liquid separation. Chemicals used for treating cyan-containing waste liquid is also provided.
摘要翻译：要解决的问题：为了提供一种更优异的处理含氰废液的方法，通过该方法可以有效地除去有毒的青色成分，从而不会残留青色成分，这比常规方法具有更高的处理安全性，其中方便，可以在工业上使用，并进一步提供用于其的化学品。解决方案：用于处理含氰废液的方法的特征在于，选自由具有醛基或酮基和疏水基的化合物组成的组中的至少一种化合物，具有羧基的化合物和将疏水基团，乙醛酸或其酯，抗坏血酸或其旋光异构体，木质素或其衍生物，腐殖酸或其衍生物和还原糖加入到含氰废液中，并将废液保持在pH 5至12至导致废液中青色与所选化合物反应产生氰醇，氰醇被吸附在悬浮物上，然后吸附材料进行固液分离。还提供了用于处理含氰废液的化学品。版权所有（C）2013，JPO＆INPIT

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