TWI551552B - A method of decomposition of organic solvent waste - Google Patents
A method of decomposition of organic solvent waste Download PDFInfo
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- TWI551552B TWI551552B TW103106211A TW103106211A TWI551552B TW I551552 B TWI551552 B TW I551552B TW 103106211 A TW103106211 A TW 103106211A TW 103106211 A TW103106211 A TW 103106211A TW I551552 B TWI551552 B TW I551552B
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Description
本發明係有關於一種含有硝酸鹽氮、總氮、COD、TMAH、有機溶劑廢水之分解方法，尤其是有關於一種可以藉由氯化鈉與碳為觸媒透過重複循環的電解方式，將硝酸鹽氮、總氮、COD、TMAH、有機溶劑廢水中之硝酸鹽氮、總氮、COD、TMAH、有機溶劑完全分解，而達到減少廢棄物之排放以及降低環境污染之目的之硝酸鹽氮、總氮、COD、TMAH、有機溶劑廢水之分解方法。 The invention relates to a method for decomposing wastewater containing nitrate nitrogen, total nitrogen, COD, TMAH and organic solvent, in particular to an electrolytic method capable of repeating circulation through sodium chloride and carbon as a catalyst. Nitrate nitrogen, total nitrogen, COD, TMAH, nitrate nitrogen, total nitrogen, COD, TMAH, organic solvents in organic solvent wastewater are completely decomposed, and nitrate nitrogen and total for the purpose of reducing waste emissions and reducing environmental pollution Nitrogen, COD, TMAH, decomposition methods of organic solvent wastewater.
電子加工業由於製程繁複，且使用多種不同成份的處理葯劑，使各製程會產生不同性質的廢水，產生的廢水通常有以下幾種：高濃度的蝕刻廢液(氯化銅蝕刻或氯化銨蝕刻)、微蝕廢液(含硫酸/雙氧水，過硫酸鈉，過硫酸銨)、顯像剝膜廢液(含碳酸鈉，氫氧化鈉)、化學銅廢液(含硫酸銅、甲醛螯合劑)、剝錫鉛廢液(含氟化銨、硝酸鹽氮、總氮、COD、TMAH、有機溶劑、雙氧水)、剝掛架廢液(含硝酸鹽氮、總氮、COD、TMAH、有機溶劑)、低濃度的酸洗廢液(含硫酸)以及水洗廢液(含脫脂劑)等。由於各種廢液的濃度差異大且性質迥異，無法任意的加以混合收集處理，以免因廢水水質的劇烈變化或因成份複雜相互干擾而難以處理，更造成資源的浪費。 Due to the complicated process and the use of a variety of different treatment agents, the electronic processing industry produces wastewater of different nature. The wastewater produced usually has the following types: high concentration etching waste liquid (copper chloride etching or ammonium chloride) Etching), micro-etching waste liquid (including sulfuric acid / hydrogen peroxide, sodium persulfate, ammonium persulfate), image stripping waste liquid (including sodium carbonate, sodium hydroxide), chemical copper waste liquid (including copper sulfate, formaldehyde chelating agent) ), stripping lead waste liquid (ammonium fluoride, nitrate nitrogen, total nitrogen, COD, TMAH, organic solvent, hydrogen peroxide), stripping waste liquid (containing nitrate nitrogen, total nitrogen, COD, TMAH, organic solvent) ), low-concentration pickling waste liquid (including sulfuric acid) and washing waste liquid (including degreaser). Due to the large difference in the concentration of various waste liquids and the different nature, it is impossible to mix and collect them arbitrarily, so as not to be difficult to handle due to drastic changes in the quality of the wastewater or due to complex interference of components, and waste of resources.
且由於硝酸鹽氮、總氮、COD、TMAH、有機溶劑廢水中的硝酸鹽氮、總氮、COD、TMAH、有機溶劑成分具有很強的氧化性及腐蝕性，溶液越濃其氧化性越強，若隨意排放硝酸鹽氮、總氮、COD、TMAH、有機溶劑廢水將會對對環境與生物造成嚴重的傷害。 And because nitrate nitrogen, total nitrogen, COD, TMAH, nitrate nitrogen, total nitrogen, COD, TMAH, and organic solvent components in organic solvent wastewater have strong oxidizing and corrosive properties, the stronger the solution, the stronger the oxidizing property. If you arbitrarily discharge nitrate nitrogen, total nitrogen, COD, TMAH, organic solvent wastewater, it will cause serious damage to the environment and organisms.
因此，如何提供一個能有效分解廢水中的硝酸鹽氮、總氮、COD、TMAH、有機溶劑成分，使其達到可安全排放之目的，是創作者亟欲解決之課題。 Therefore, how to provide a solution that can effectively decompose nitrate nitrogen, total nitrogen, COD, TMAH, and organic solvent components in wastewater to achieve safe discharge is a problem that creators want to solve.
有鑑於習知硝酸鹽氮、總氮、COD、TMAH、有機溶劑廢水處理方法之不完善，經創作人多年研究開發，終於研發此種可透過電解方式，而達到可將其廢水中的硝酸鹽氮、總氮、COD、TMAH、有機溶劑完全分解之目的。本發明硝酸鹽氮、總氮、COD、TMAH、有機溶劑廢水之分解方法，其步驟包括：(A)調整硝酸鹽氮，總氮，COD廢水之PH值至酸性；(B)加入氯化鈉，以金屬板當陰極，以鈦合金當陽極進行電解，使其產生氯化氨水溶液與氫氧化鈉水溶液；(C)將前述氯化氨水溶液進行碳作用，使其產生氮氣、碳及氯化氫；(D)將前述氯化氫與步驟(B)氫氧化鈉水溶液進行酸鹼中和後，進行電解使其產生次氯酸鈉水溶液；以及(E)將前述所得之次氯酸鈉水溶液重複步驟(B)至步驟(D)。 In view of the imperfections of the conventional nitrate nitrogen, total nitrogen, COD, TMAH, and organic solvent wastewater treatment methods, the creators have been researching and developing for many years, and finally developed this kind of permeable electrolytic method to reach the nitrate in the wastewater. Nitrogen, total nitrogen, COD, TMAH, and organic solvents are completely decomposed. The method for decomposing nitrate nitrogen, total nitrogen, COD, TMAH and organic solvent wastewater of the invention comprises the steps of: (A) adjusting the pH value of nitrate nitrogen, total nitrogen and COD wastewater to acidity; (B) adding sodium chloride The metal plate is used as a cathode, and the titanium alloy is used as an anode for electrolysis to produce an aqueous solution of ammonium chloride and an aqueous solution of sodium hydroxide; (C) the aqueous solution of the aqueous ammonia chloride is carbonized to produce nitrogen, carbon and hydrogen chloride; (D) after the hydrogen chloride is neutralized with the aqueous solution of sodium hydroxide in the step (B), and then subjected to electrolysis to produce an aqueous solution of sodium hypochlorite; and (E) repeating the steps (B) to (D) of the aqueous sodium hypochlorite solution obtained as described above. .
本發明之主要目的係藉由以上之流程，以氯化鈉及碳作為觸媒，反覆透過電解方式，便可達到將硝酸鹽氮、總氮、COD、TMAH、有機溶劑廢水中之硝酸鹽氮、總氮、COD、TMAH、有機溶劑完全分解之目的。 The main object of the present invention is to achieve the nitrate nitrogen in the nitrate nitrogen, total nitrogen, COD, TMAH, and organic solvent wastewater by using the sodium chloride and carbon as a catalyst through the above process. Total nitrogen, COD, TMAH, and organic solvents are completely decomposed.
為了能讓審查員能更易於了解本創作硝酸鹽氮、總氮、COD、TMAH、有 機溶劑之分解方法，請參閱以下圖式及本發明硝酸鹽氮、總氮、COD、TMAH、有機溶劑廢水之分解方法之實施方式說明。 In order to make it easier for the examiner to understand the nitrate nitrogen, total nitrogen, COD, TMAH, and For the decomposition method of the organic solvent, please refer to the following figures and the description of the embodiment of the decomposition method of the nitrate nitrogen, total nitrogen, COD, TMAH, and organic solvent wastewater of the present invention.
1‧‧‧酸液 1‧‧‧Acid
2‧‧‧硝酸鹽氮、總氮、COD、TMAH、有機溶劑 2‧‧‧Nitrate nitrogen, total nitrogen, COD, TMAH, organic solvents
3‧‧‧氯化鈉 3‧‧‧Sodium chloride
4‧‧‧電解 4‧‧‧Electrolysis
5‧‧‧次氯酸鈉水溶液 5‧‧‧Sodium hypochlorite aqueous solution
6‧‧‧氯化氨水溶液 6‧‧‧Aqueous ammonia solution
7‧‧‧氫氧化鈉水溶液 7‧‧‧Sodium hydroxide solution
8‧‧‧碳作用 8‧‧‧Carbon effect
9‧‧‧氯化氫 9‧‧‧ Hydrogen chloride
10‧‧‧氯化鈉 10‧‧‧Sodium chloride
圖一 係為本發明硝酸鹽氮、總氮、COD、TMAH、有機溶劑廢水之分解方法之實施流程圖 Figure 1 is a flow chart showing the implementation of the method for decomposing nitrate nitrogen, total nitrogen, COD, TMAH and organic solvent wastewater according to the present invention.
請參閱圖一，圖一係為本發明硝酸鹽氮、總氮、COD、TMAH、有機溶劑廢水之分解方法之實施流程圖。本發明硝酸鹽氮、總氮、COD、TMAH、有機溶劑廢水之分解方法，其步驟包括：(A)調整硝酸鹽氮、總氮、COD、TMAH、有機溶劑廢水2之PH值至酸性(例如以酸液1調整)；(B)加入氯化鈉3以金屬之陰極進行電解4將廢水中之硝酸鹽氮、總氮、COD、TMAH、有機溶劑還原成氨，同時，氯化鈉3之氯離子會於陽極進行電解，而產生次氯酸鈉水溶液5，次氯酸鈉水溶液5與氨作用後，可產生氯化氨水溶液6與氫氧化鈉水溶液7；(C)將前述氯化氨水溶液進行碳作用8，使其產生氮氣、碳及氯化氫9；(D)將前述氯化氫9與步驟(B)氫氧化鈉水溶液7進行酸鹼中和後產生氯化鈉10，再將氯化鈉10進行電解使其產生次氯酸鈉水溶液；以及(E)將前述所得之次氯酸鈉水溶液重複步驟(B)至步驟(D)；藉由以上之流程，即可以氯化鈉及碳作為觸媒，反覆透過電解方式，便可達到將硝酸鹽氮、總氮、COD、TMAH、有機溶劑廢水中之硝酸鹽氮、總氮、COD、TMAH、有機溶劑完全分解之目的。 Please refer to FIG. 1. FIG. 1 is a flow chart showing the implementation of the method for decomposing nitrate nitrogen, total nitrogen, COD, TMAH and organic solvent wastewater according to the present invention. The method for decomposing the nitrate nitrogen, total nitrogen, COD, TMAH, and organic solvent wastewater of the present invention comprises the steps of: (A) adjusting the pH of the nitrate nitrogen, total nitrogen, COD, TMAH, and organic solvent wastewater 2 to be acidic (for example, (Adjusted with acid 1); (B) Add sodium chloride 3 to electrolyze at the cathode of the metal 4 to reduce nitrate nitrogen, total nitrogen, COD, TMAH, organic solvent in the wastewater to ammonia, and at the same time, sodium chloride 3 Chloride ions are electrolyzed at the anode to produce sodium hypochlorite aqueous solution 5, and sodium hypochlorite aqueous solution 5 reacts with ammonia to produce aqueous ammonia chloride solution 6 and aqueous sodium hydroxide solution 7; (C) carbonation of the aqueous ammonia chloride solution 8 Producing nitrogen, carbon and hydrogen chloride 9; (D) neutralizing the hydrogen chloride 9 with the aqueous solution 7 of the step (B) to produce sodium chloride 10, and then electrolyzing the sodium chloride 10 to produce And (E) repeating the steps (B) to (D) of the aqueous sodium hypochlorite solution obtained as described above; by the above process, sodium chloride and carbon can be used as a catalyst, and the electrolysis method can be repeatedly used. Nitrate nitrogen, total nitrogen, COD, TMAH, have Nitrate nitrogen, total nitrogen, COD, TMAH, and organic solvents in the solvent wastewater are completely decomposed.
本發明硝酸鹽氮、總氮、COD、TMAH、有機溶劑廢水之分解方法，其中，步驟(B)之金屬可改為合金，或改為銅合金。 The method for decomposing nitrate nitrogen, total nitrogen, COD, TMAH, and organic solvent wastewater of the present invention, wherein the metal of step (B) can be changed to an alloy or changed to a copper alloy.
以上所述僅是藉由較佳實施例詳細說明本發明硝酸鹽氮、總氮、COD、TMAH、有機溶劑廢水之分解回收方法，然而對於該實施例所作的任何修改與變化，例如步驟B至步驟C之重複次數、步驟B之電解時間、設備或是酸液之種類等等之變化均不脫離本發明之精神與範圍。 The foregoing is only a detailed description of the decomposition and recovery method of the nitrate nitrogen, total nitrogen, COD, TMAH, and organic solvent wastewater of the present invention by the preferred embodiments, however, any modifications and changes made to the embodiment, such as step B to The number of repetitions of the step C, the electrolysis time of the step B, the type of the apparatus or the acid, and the like are not departing from the spirit and scope of the invention.
由以上詳細說明可使熟知本項技藝者明瞭本發明的確可達成前述之目的，實已符合專利法之規定，爰依法提出發明專利申請。 From the above detailed description, those skilled in the art can understand that the present invention can achieve the foregoing objects, and has already met the requirements of the Patent Law, and has filed an invention patent application according to law.
1‧‧‧酸液 1‧‧‧Acid
2‧‧‧硝酸鹽氮、總氮、COD、TMAH、有機溶劑 2‧‧‧Nitrate nitrogen, total nitrogen, COD, TMAH, organic solvents
3‧‧‧氯化鈉 3‧‧‧Sodium chloride
4‧‧‧電解 4‧‧‧Electrolysis
5‧‧‧次氯酸鈉水溶液 5‧‧‧Sodium hypochlorite aqueous solution
6‧‧‧氯化氨水溶液 6‧‧‧Aqueous ammonia solution
7‧‧‧氫氧化鈉水溶液 7‧‧‧Sodium hydroxide solution
8‧‧‧碳作用 8‧‧‧Carbon effect
9‧‧‧氯化氫 9‧‧‧ Hydrogen chloride
10‧‧‧氯化鈉 10‧‧‧Sodium chloride
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| TW103106211A TWI551552B (en) | 2013-04-17 | 2014-02-25 | A method of decomposition of organic solvent waste |
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| CN114106343A (en) * | 2020-08-28 | 2022-03-01 | 中国石油化工股份有限公司 | Preparation method of metal organic framework material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0849227A2 (en) * | 1996-12-18 | 1998-06-24 | Kurita Water Industries Ltd. | Electrolytic treatment method for water-containing nitrogen compounds |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0849227A2 (en) * | 1996-12-18 | 1998-06-24 | Kurita Water Industries Ltd. | Electrolytic treatment method for water-containing nitrogen compounds |
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