Recovering handling method for amino C acid wastewater

A technology for recycling and treating acidic waste water, which is applied in the directions of extraction water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc. It can solve problems such as troubles, failure to find effective and reasonable solutions, and restrictions on enterprise development.

Inactive Publication Date: 2007-09-26
NANJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For a long time, no effective and reasonable method has been found for the treatment of this wastewater, which has troubled and restricted the development of enterprises. So far, no public reports related to this wastewater treatment have been found

Method used

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  • Recovering handling method for amino C acid wastewater
  • Recovering handling method for amino C acid wastewater

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Embodiment 1

[0063] Embodiment 1, the recovery and treatment method of amino C acid acidic wastewater, its treatment process flow chart is as shown in Figure 1: According to the experience and work accumulation of dye intermediate acid wastewater treatment in the past, the amino C acid acid wastewater is recycled and processed by extraction method , the treatment process is as follows: First, add the same amount of different extractants to a certain amount of wastewater, according to the COD in the raffinate water phase Cr To judge the effect of various extractants on the treatment of the wastewater, the extraction agent used in the treatment process can be selected. In this study, n-octanol was selected as a suitable extractant. After the extraction agent is determined, add a certain proportion of the extraction agent to a certain amount of waste water, shake vigorously, mix well, and then let it stand for stratification, and separate the oil phase (extract liquid) and water phase (raffin...

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Abstract

The invention discloses a recovery processing method of amino C acid acid-wastewater, which comprises the following steps: adding finite proportion extractant into waste water; shocking sharply; mixing fully; stewing; layering; sharing oil phase and water phase; extracting most of organic matter into oil phase; removing oil phase; adding into finite quantity queous alkali; proceeding strip; getting regenerate extractant; cycling using in craft; separating out organic matter from waste water; forming strip water phase; getting the reclaiming sulphuric acid; making total clearance of acid waste water CODCr reach above 93% and reclaiming sulfuric acid density at 560g.L-1; setting reclaiming rate of sulfuric>92%.

Description

technical field [0001] The invention relates to a chemical process, in particular to a method for recycling and treating amino acid acid waste water. Background technique [0002] The commercial name of the product whose chemical name is 2-naphthylamine-4,8-disulfonic acid (2-naphthylamine-4,8-disulfonic acid) is amino acid, which is an intermediate of reactive dyes and direct dyes, and its synthesis The process is to use naphthalene as raw material, generate 1,5-dinaphthalenesulfonic acid through sulfonation, and then generate 2-nitro-4,8-dinaphthalenesulfonic acid through nitration, add magnesium oxide to the nitration reaction solution to generate 2 -Nitro-4,8-dinaphthalenesulfonic acid magnesium salt precipitates, and the filtered filtrate is acidic wastewater. The filter cake is obtained by adding alkali, iron powder reduction, and acidification to obtain amino C acid products. Since naphthalene has 1,6-disulfonic acid-based isomers during sulfonation, after nitration...

Claims

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Application Information

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IPC IPC(8): C02F1/26C02F1/28C01B17/90C02F101/38
Inventor 彭盘英王玉萍王叶思
Owner NANJING NORMAL UNIVERSITY
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