Waste water treating and resourcelization method for tobias acid production

A technology for the production of waste water and tunic acid, which is applied in chemical instruments and methods, multi-stage water/sewage treatment, adsorption water/sewage treatment, etc., can solve the problems that the technology has not been reported in the literature, and achieve the effect of reducing the chroma of the effluent

Inactive Publication Date: 2007-06-27
NANJING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1: Put 10mL (about 7 grams) of ND-900 complex adsorption resin into a jacketed glass adsorption column (Φ12×160mm), in five copies, marked as A, B, C, D, E , where A, B, and C are primary adsorption columns, and D and E are secondary adsorption columns. Use NaOH aqueous solution to adjust the pH to 1-5. After filtering, pass it through the first-stage adsorption ND-900 resin bed at 20±5°C at a flow rate of 20mL / h, and in three columns A, B, and C. Two columns are sucked in series, and the third column is desorbed. The treatment capacity is 70mL / batch. The primary effluent is collected in a clean and dry container; after collecting several batches, the primary effluent is subjected to secondary adsorption at a flow rate of 25mL / h , Among the two columns D and E, one column is adsorbed and the other column is desorbed, the treatment capacity is 160ml / batch, the color of the effluent is 10-50, the concentration of sulfonated tunic acid is 700-1000mg / L, tunic acid a...

Embodiment 2

[0021] Example 2: Put 10mL (about 7 grams) of ND-900 complex adsorption resin into a jacketed glass adsorption column (Φ12×160mm), in triplicate; put 10ml (about 7.5 grams) of NDA-99 ultrahigh The cross-linked adsorption resin was loaded into a jacketed glass adsorption column (Φ12×160 mm), in duplicate. Adjust the pH of the waste water to 2-3. After filtering, pass it through the ND-900 resin bed at 20±5°C at a flow rate of 20mL / h. The two columns are sucked in series, and the third column is desorbed. Batches, the primary effluent is collected in a clean and dry container; after collecting several batches, the primary effluent is subjected to secondary adsorption by NDA-99 resin at a flow rate of 25mL / h, the treatment volume is 160ml / batch, and the effluent color The degree is 10 to 50, the concentration of sulfonated toric acid is <560mg / L, the concentration of toric acid and 2,1-acid is <60mg / L, and the COD is <1500mg / L.

[0022] Use 10mL of 12% NaOH aqueous solution and ...

Embodiment 3

[0023] Example 3: 100mL (about 70 grams) of ND-900 adsorption resin was loaded into a jacketed glass adsorption column (Φ32×360mm), in triplicate; 100ml (about 75 grams) of NDA-99 ultra-high crosslinking The adsorption resin was loaded into a jacketed glass adsorption column (Φ32×360mm) in duplicate; the pH of the wastewater was adjusted to 2-3, and after filtration, it was first passed through the ND at 20±5°C at a flow rate of 200mL / h. -900 resin bed, two columns are connected in series for adsorption, and the third column is desorbed. The processing capacity is 700mL / batch. The primary effluent is collected in a clean and dry container; The flow rate is carried out by NDA-99 resin for secondary adsorption, the treatment capacity is 1600ml / batch, the color of the effluent is 20-50, the concentration of sulfonated tunic acid is less than 560mg / L, the concentration of tunic acid and 2,1-acid <60mg / L, COD<1500mg / L.

[0024] Use 100mL 12% NaOH aqueous solution and 300mL deioniz...

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PUM

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Abstract

The invention discloses a tobias acid production waste water controlling and resource recovering method, and the method regulates the pH value of the tobias acid production waste water, filters and makes main organic matters in the waste water absorbed on resin by the combination process of macroporous weakly basic resin and ultrahigh cross-linking absorption resin. The crude waste water: puce, chroma 1500-2000, iodinated tobias acid concentration 12000-15000 mg / L, tobias acid and 2, 1-acid concentration 6000-7000 mg / L, and COD 45000-5000 mg / L, and the processed waste water: chroma 10-50, iodinated tobias acid concentration < 500mg / L, tobias acid and 2, 1- acid concentration <50 mg / L, CODCr<1500mg / L, and the resins are regenerated by liquid alkali and water de-absorption, the high concentration deabsorption solution returns to amination stage of the tobias acid producing process, low concentration deabsorption solution is used indiscriminately in the next deabsoption operation, the sulphonated tobias acid is above 10 kg recovered from per cubic meter of waste water sample and the tobias acid is above 5 kg.

Description

1. Technical field [0001] The invention relates to a treatment of production waste water, in particular to a treatment and resource utilization method for the waste water discharged during the production process of the chemical product Tuburic acid (2-amino-1-naphthalenesulfonic acid). 2. Background technology [0002] Tuccinic acid, scientific name 2-amino-1-naphthalenesulfonic acid, is an intermediate of azo dyes, used to manufacture J acid and gamma acid, naphthol AS-SW, reactive red K-1613, organic purple, Lisol purple Helisol Scarlet and other products. At present, the production method of Tuo's acid is to take 2-naphthol as raw material, in o-nitroethylbenzene solvent, generate 2-naphthol-1-sulfonic acid with chlorosulfonic acid sulfonation, neutralize and separate with soda ash to obtain 2 -Naphthol-1-sodium sulfonate, ammonolyze liquid ammonia in the presence of acidic sodium sulfite to obtain 2-naphthylamine-1-sodium sulfonate, then acidify with sulfuric acid, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/02C02F1/66C02F1/28
Inventor 李爱民葛俊杰张全兴程秀梅刘福强张海云王春蔡建国龙超陈金龙
Owner NANJING UNIV
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