Enhancing ultrafiltration treatment method of compound wastewater containing cadmium and methylene blue by surfactant
A technology of surfactant and methylene blue, which is applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc., can solve heavy metal wastewater investment, high operating cost, inability to realize heavy metal recycling, difficult Simultaneous removal of two substances, etc., to achieve the effect of easy recycling or recycling, reducing secondary pollution, and realizing automatic operation
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Embodiment 1
[0019] Take the untreated composite wastewater containing cadmium ion concentration of 25mg / L and methylene blue concentration of 4mg / L, and add 8×10 -3 mol of SDS, stirred evenly and left to react for 0.5h. After the reaction was completed, the SDS monomer molecules in the composite wastewater self-assembled to form SDS micelles with adsorbed cadmium ions and methylene blue molecules, and then pumped the composite wastewater after the reaction. Go to the ultrafiltration membrane module for ultrafiltration treatment. The ultrafiltration membrane module is a hollow fiber ultrafiltration membrane module. Batch type, the retentate after ultrafiltration treatment is returned to the water inlet tank of the composite wastewater, and the ultrafiltration membrane intercepts the SDS micelles adsorbed with cadmium ions and methylene blue molecules, and the cadmium ions and methylene blue in the wastewater can be removed at the same time, and the blue composite wastewater After ultrafilt...
Embodiment 2
[0023] Take the untreated composite wastewater containing cadmium ion concentration of 50mg / L and methylene blue concentration of 6mg / L, and add 8×10 -3 mol of SDS, stirred evenly and left to react for 0.5h. After the reaction was completed, the SDS monomer molecules in the composite wastewater self-assembled to form SDS micelles with adsorbed cadmium ions and methylene blue molecules, and then pumped the composite wastewater after the reaction. Go to the ultrafiltration membrane module for ultrafiltration treatment. The ultrafiltration membrane module is a hollow fiber ultrafiltration membrane module. Batch type, the retentate after ultrafiltration treatment is returned to the water inlet tank of the composite wastewater, and the ultrafiltration membrane intercepts the SDS micelles adsorbed with cadmium ions and methylene blue molecules, and the cadmium ions and methylene blue in the wastewater can be removed at the same time, and the blue composite wastewater After ultrafilt...
Embodiment 3
[0027] Take the untreated composite wastewater containing cadmium ion concentration of 100mg / L and methylene blue concentration of 6mg / L, and add 8×10 -3 mol of SDS, stirred evenly and left to react for 0.5h. After the reaction was completed, the SDS monomer molecules in the composite wastewater self-assembled to form SDS micelles with adsorbed cadmium ions and methylene blue molecules, and then pumped the composite wastewater after the reaction. Go to the ultrafiltration membrane module for ultrafiltration treatment. The ultrafiltration membrane module is a hollow fiber ultrafiltration membrane module. Batch type, the retentate after ultrafiltration treatment is returned to the water inlet tank of the composite wastewater, and the ultrafiltration membrane intercepts the SDS micelles adsorbed with cadmium ions and methylene blue molecules, and the cadmium ions and methylene blue in the wastewater can be removed at the same time, and the blue composite wastewater After ultrafil...
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