Process of treating and reusing effluent from 1-amino-8-naphthol-3, 6-disulfonic acid production
A technology for the production of waste water and disulfonic acid, which is applied in separation methods, water/sewage treatment, sustainable biological treatment, etc., can solve the problems of effective treatment of production waste water, technology that has never been reported in literature, and environmental pollution, etc., to achieve beneficial Comprehensive utilization, easy desorption and regeneration, and high adsorption efficiency
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[0027] Pack 30mL (about 22g) of macroporous weakly basic resin ND900 resin into a glass column (Φ20×250mm) with a heat preservation jacket. Take 55mL of yellow production wastewater, distill 5mL, cool to room temperature, and adjust the pH value to 3. The CODcr of the upper column liquid is 16700mg / L. At room temperature (25°C) it passes through the resin column at a flow rate of 10mL / h. The adsorbed water is colorless, and the CODcr is reduced to 260mg / L. The water is neutralized and oxidized by aerobic biological contact. After treatment, CODcr is reduced to 70mg / L, which can reach the national secondary emission standard.
[0028] After adsorption, the macroporous weakly basic resin ND900 resin is desorbed and regenerated with alkali at a temperature of 92±2°C and 40 mL of hot water, and the flow rate is 10 mL / h. The resin regenerated by desorption is reused. The desorption rate of 1-amino-8-naphthol-3,6-disulfonic acid was 98%. After the desorption solution (40mL) is di...
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