Treatment method for fused ring compound wastewater

A compound and wastewater technology, applied in the separation/purification of carboxylic acid compounds, boron oxide compounds, chemical instruments and methods, etc., can solve the problems of high cost and inability to recycle waste water of polycyclic compounds, so as to reduce the cost of treatment, The effect of improving market competitiveness and reducing production costs
CN104445781AActive Publication Date: 2015-03-25ZHEJIANG QICAI ECO TECH CO LTD
10 Cites 10 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ZHEJIANG QICAI ECO TECH CO LTD
Publication Date
2015-03-25

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a treatment method for fused ring compound wastewater. According to the treatment method, the fused ring compound wastewater is taken as the raw material, subjected to styrene-toluylene copolymerized macroporous resin absorption treatment, and then desorbed to recover phthalic acid, and an effluent liquid I is obtained for standby application; and the effluent liquid I is neutralized by ammonia water until the pH ranges from 7 to 8, is subjected to N-methyl glucamine amino chelate resin absorption treatment and is desorbed to recover boric acid, and an effluent liquid II is obtained for standby application; concentrated sulfuric acid is added to the effluent liquid II to regulate the pH to be 5.0-5.5 and is distilled at normal pressure to obtain ammonium sulfate. According to the disclosed treatment method for the fused ring compound wastewater, phthalic acid, boric acid and ammonium sulfate are recovered in a high yield manner sequentially through specific steps, and the method for comprehensively treating chemical wastewater is provided by means of combination of multi-stage resin technologies and physical and chemical treatment.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of industrial wastewater, in particular to a treatment method for condensed ring compounds. Background technique

[0002] In recent years, the rapid development of printing, dyeing and light textile has brought a series of environmental problems. my country is the largest country in the textile printing and dyeing industry. A large amount of chemicals and dyes are used in the printing and dyeing process, and the wastewater contains a variety of toxic and harmful substances. The discharge of printing and dyeing wastewater in my country accounts for about 35% of the entire industrial wastewater, and the reuse rate is less than 10%, and more than 90% is discharged as wastewater. Therefore, the governance of the chemical printing and dyeing industry is particularly important.

[0003] Fused ring compounds are important dyes in dye chemical industry, and 2,4-dihydroxyanthraquinone is a common fused ring compoun...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More