Method for recovering sodium chloride and glycerol from high-salt glycerol-containing high-depth organic wastewater
A technology of organic waste water and recovery methods, applied in the preparation of organic compounds, organic chemistry, chemical instruments and methods, etc., can solve the problems of waste of resources, unrecycling, environmental pollution, etc., and achieve the effect of ensuring feasibility
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Embodiment 1
[0051] Recovery method of sodium chloride and glycerin in high-salt glycerin-containing high-depth organic wastewater:
[0052] (1) Complexation
[0053] Alkaline solution and copper sulfate are added to the high-salt glycerol-containing wastewater, so that the glycerol contained in the wastewater undergoes a complex reaction with copper ions under alkaline conditions to form glycerol copper.
[0054] The concentration of sodium chloride in the high-salt glycerin-containing wastewater is 30%, the concentration of glycerin is 2%, and the alkaline solution is sodium hydroxide solution.
[0055] (2) Nanofiltration desalination (separation of glycerol and salt)
[0056] The waste water after the complexation treatment in step (1) is desalted by graded filtration through a nanofiltration membrane to obtain a nanofiltration concentrate containing copper glycerol and a nanofiltration dialysate containing sodium chloride. In order to ensure that the nanofiltration membrane is not po...
Embodiment 2
[0079] A recovery method for sodium chloride and glycerin in high-salt glycerin-containing high-depth organic wastewater.
[0080] (1) Complexation
[0081] Alkaline solution and other metal salts are added to the high-salt glycerin-containing wastewater, so that the glycerol contained in the wastewater undergoes a complex reaction with other metal ions under alkaline conditions to form other glycerol metal complexes.
[0082] The concentration of sodium chloride in the high-salt glycerin-containing wastewater is 18%, the concentration of glycerin is 20%, the alkaline solution is sodium carbonate solution, other metal salts are zinc oxide, other metal ions are zinc ions, and other glycerol metal complexes The substance is zinc glycerol.
[0083] (2) Nanofiltration desalination (separation of glycerol and salt)
[0084] The waste water after the complexation treatment in step (1) is desalinated by graded filtration through a nanofiltration membrane to obtain a nanofiltration ...
Embodiment 3
[0107] A recovery method for sodium chloride and glycerin in high-salt glycerin-containing high-depth organic wastewater.
[0108] (1) Complexation
[0109] Alkaline solution and metal salts are added to the high-salt glycerol-containing wastewater, so that the glycerol contained in the wastewater undergoes a complex reaction with other metal ions under alkaline conditions to form other glycerol metal complexes.
[0110] The concentration of sodium chloride in the high-salt glycerol-containing wastewater is 30%, the concentration of glycerin is 12%, the alkali solution is sodium bicarbonate solution, other metal salts are ferric chloride, other metal ions are iron ions, and other glycerol metal The complex is iron glycerol.
[0111] (2) Nanofiltration desalination (separation of glycerol and salt)
[0112] The wastewater after the complexation treatment in step (1) is passed through a nanofiltration membrane for graded filtration and desalination to obtain a nanofiltration c...
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