Method for recycling copper and zinc in catalyst production wastewater
A technology for producing wastewater and catalysts, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve problems such as difficulty in recycling, pollution, and increased production costs, and achieve simple process, efficient enrichment, and stable operation. Effect
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Embodiment 1
[0023] The catalyst production wastewater material was taken from a domestic manufacturer, and the sample material conditions are shown in Table 1:
[0024] Table 1 The material situation of catalyst production wastewater in a domestic manufacturer
[0025] Test items SS Na +
NO 3 -
Cu 2+
Zn 2+
unit mg / L mg / L mg / L mg / L mg / L value 50 1000 3000 0.1 0.1
[0026] Wastewater material enters the hollow fiber ultrafiltration system unit, the operating temperature is 20°C, the control operating pressure is 0.1 MPa, the membrane surface flow velocity is 2 m / s, and the membrane flux is 60 L / (m 2 h), after testing, the water produced by the ultrafiltration unit: SS=0.05 mg / L.
[0027] The product water enters the roll-type nanofiltration membrane system unit, the operating temperature is 20°C, the operating pressure is 0.5 MPa, the membrane surface flow velocity is 2m / s, and the membrane flux is 30 L / (m 2 h), the recover...
Embodiment 2
[0030] The methanol synthesis catalyst waste water material is taken from a domestic manufacturer, and the sample material conditions are shown in Table 2:
[0031] Table 2 The material situation of catalyst production wastewater in a domestic manufacturer
[0032] Test items SS Na +
NO 3 -
Cu 2+
Zn 2+
unit mg / L mg / L mg / L mg / L mg / L value 100 5000 15000 8 5
[0033] The waste water material enters the spiral ultrafiltration membrane system unit, the operating temperature is 35°C, the control operating pressure is 0.5 MPa, the membrane surface flow velocity is 3 m / s, and the membrane flux is 300 L / (m 2 h), after testing, the water produced by the ultrafiltration unit: SS=0.08 mg / L.
[0034] The product water enters the flat-panel nanofiltration membrane system unit, the operating temperature is 30°C, the operating pressure is 3 MPa, the membrane surface flow velocity is 3m / s, and the membrane flux is 60 L / (m 2 h...
Embodiment 3
[0037] The methanol synthesis catalyst waste water material is taken from a domestic manufacturer, and the sample material conditions are shown in Table 3:
[0038] Table 3 Situation of catalyst production waste water materials of a domestic manufacturer
[0039] Test items SS Na +
NO 3 -
Cu 2+
Zn 2+
unit mg / L mg / L mg / L mg / L mg / L value 50 10000 30000 20 20
[0040] Wastewater material enters the coiled ultrafiltration membrane system unit, the operating temperature is 50 °C, the control operating pressure is 1 MPa, the membrane surface flow rate is 5 m / s, and the membrane flux is 600 L / (m 2 h), after testing, the water produced by the ultrafiltration unit: SS=0.05 mg / L.
[0041] The product water enters the ceramic tubular nanofiltration membrane system unit, the operating temperature is 50 °C, the operating pressure is 5 MPa, the membrane surface flow velocity is 5 m / s, and the membrane flux is 80 L / (m 2 h), ...
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