Novel method for removing chromaticity in printing and dyeing wastewater by biological technology
A technology of printing and dyeing wastewater and biological method, which is applied in biological water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., and can solve problems such as not being able to obtain ideal treatment effects
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Embodiment 1
[0029] A novel biological method for removing chroma in printing and dyeing wastewater, specifically as follows:
[0030] (1) Add basalt fiber to the mixed acid of concentrated sulfuric acid and concentrated nitric acid in a volume ratio of 1:1, heat up to 55°C, stir for 30 minutes, remove, wash with water until neutral, dry, add to Add 1% deionized water, 5% cetyltrimethylammonium chloride and KH-550 to deionized water, heat up to 35°C, stir for 1 hour, remove, wash with water, and dry to obtain the improved Sexual basalt fiber;
[0031] (2) Mix cerium nitrate, yttrium nitrate, and erbium nitrate into concentrated hydrochloric acid at a mass ratio of 1:1:1. After heating and stirring to dissolve, heat up to 85°C to drive out the acid. When the pH reaches 6-7, cool to room temperature to obtain a rare earth solution, add the modified basalt fiber to the rare earth solution, the solid-liquid mass ratio of the modified basalt fiber to the rare earth solution is 1:50, and stir a...
Embodiment 2
[0038] A novel biological method for removing chroma in printing and dyeing wastewater, specifically as follows:
[0039] (1) Add basalt fiber to the mixed acid of concentrated sulfuric acid and concentrated nitric acid in a volume ratio of 1:2, heat up to 60°C, stir for 30 minutes, remove, wash with water until neutral, dry, add to Add 1.2% deionized water, 4% cetyltrimethylammonium chloride and KH-550 to deionized water, heat up to 30°C, stir for 1 hour, remove, wash with water, and dry to obtain improved Sexual basalt fiber;
[0040](2) Mix cerium nitrate, yttrium nitrate, and erbium nitrate into concentrated hydrochloric acid in a mass ratio of 1:1:1. After heating and stirring to dissolve, heat up to 80°C to drive out the acid. During this period, add water in time to keep the total volume unchanged. When the pH reaches 6-7, cool to room temperature to get the rare earth solution, add the modified basalt fiber to the rare earth solution, the solid-liquid mass ratio of th...
Embodiment 3
[0047] A novel biological method for removing chroma in printing and dyeing wastewater, specifically as follows:
[0048] (1) Add basalt fiber to the mixed acid of concentrated sulfuric acid and concentrated nitric acid in a volume ratio of 1:1.5, raise the temperature to 60°C, stir for 30 minutes, remove, wash with water until neutral, dry, add to Add 0.5% deionized water, 6% cetyltrimethylammonium chloride and KH-550 to deionized water, heat up to 35°C, stir for 1 hour, remove, wash with water, and dry to obtain the improved Sexual basalt fiber;
[0049] (2) Mix cerium nitrate, yttrium nitrate, and erbium nitrate into concentrated hydrochloric acid in a mass ratio of 1:1:1. After heating and stirring to dissolve, heat up to 90°C to drive out the acid. When the pH reaches 6-7, cool to room temperature to obtain a rare earth solution, add the modified basalt fiber to the rare earth solution, the solid-liquid mass ratio of the modified basalt fiber to the rare earth solution i...
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