A kind of method for demulsification treatment of waste oil for acrylic fiber spinning
An acrylic fiber and demulsification technology, which is applied in filtration treatment, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of increasing process complexity, difficulty in regeneration, and short membrane life, and achieves high demulsification efficiency. The effect of degradation recovery cost and easy process control
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Embodiment 1
[0024] (1) Take the polyamide whose number-average molecular weight is 3,000,000 and the degree of hydrolysis is 35, and make a 0.1wt% solution with water;
[0025] (2) Add 200ml of the above-mentioned solution to 100ml of waste oil agent, let stand until the upper layer solution is clear and transparent, obtain 280ml of demulsification solution after filtration, and its COD value is 5000PPm.
[0026] (3) After filtration, the demulsification solution is subjected to adsorption treatment with 0.028g of activated carbon, filtered, and solid-liquid separation, to obtain a COD value of 380PPm and organic matter in the water phase. The water phase meets the emission standard and can be recycled. The organic matter is used as fuel for power generation or heating. .
Embodiment 2
[0028] (1) Take a certain amount of polyamide with a number average molecular weight of 5 million and a degree of hydrolysis of 30, and make a 0.24% solution with water;
[0029] (2) Add 100ml of the above-mentioned solution to 100ml of waste oil agent, let it stand until the upper layer solution is clear and transparent, obtain 160ml of demulsification solution after centrifugation, and its COD value is 4800PPm.
[0030] (3) After centrifugation, the demulsification solution is subjected to adsorption treatment with 0.16g of silica gel, and centrifuged. The COD value of the water phase is 310, which meets the emission standard and can be recycled. The organic matter is used as fuel for power generation or heating.
Embodiment 3
[0032] (1) Take a certain amount of polyamide with a number average molecular weight of 10 million and a degree of hydrolysis of 20, and make a 0.52% solution with water;
[0033] (2) Add 150ml of the above-mentioned solution to 100ml of waste oil agent, let stand until the upper layer solution is clear and transparent, obtain 200ml of demulsification solution after filtration, and its COD value is 4100PPm.
[0034] (3) The filtered demulsification solution is subjected to adsorption treatment with 0.1g of silica gel, centrifuged, and solid-liquid separation to obtain a COD value of 280PPm and organic matter in the water phase. The water phase reaches the discharge standard and can be recycled. The organic matter is used as fuel for power generation or heating.
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