Method for resource utilization of skim serum
A technology of skim waste water and resource utilization, which is applied in organic chemistry, ether separation/purification, ether preparation and other directions, can solve the problems of difficult recovery of membrane fouling flux, unstable product quality, and high cost of membrane replacement, and achieve the subsequent process load. Small, stable product quality, excellent product quality effect
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Embodiment 1
[0033] Take fresh natural rubber latex from a rubber factory and centrifuge 10 L of rubber-clear waste water. First, filter it through an alumina microfiltration membrane. The average pore size is 200 nm, the transmembrane pressure difference is 0.1 MPa, and the membrane surface velocity is 1 m / s. Concentrate the glue clear wastewater to obtain 1 L of concentrated solution and 9 L of microfiltration permeate, and then send the microfiltration permeate to the zirconia ultrafiltration membrane for filtration. The average pore size of the ultrafiltration membrane is 20 nm. The membrane pressure difference is 0.3 MPa, and the membrane surface flow velocity is 2 m / s to obtain ultrafiltration permeate.
[0034] The ultrafiltration permeate is then sent to a medium polar resin column (column volume 2L) with a flow rate of 1BV / h. After treatment, it is eluted with 50% methanol (2L), and the eluate is collected. After suction filtration, vacuum distillation yields 200g concentrated Aft...
Embodiment 2
[0039] Take 10 L of centrifuged fresh natural rubber latex waste water from a rubber factory, and first filter it through an alumina microfiltration membrane. The average pore size is 200 nm, the transmembrane pressure difference is 0.5 MPa, and the membrane surface velocity is 1 m / s. Concentrate the glue clear wastewater to obtain 1 L of concentrated solution and 9 L of microfiltration permeate, and then send the microfiltration permeate to the zirconia ultrafiltration membrane for filtration. The average pore size of the ultrafiltration membrane is 20 nm. The membrane pressure difference is 0.3 MPa, and the membrane surface flow velocity is 2 m / s to obtain ultrafiltration permeate.
[0040] The ultrafiltration permeate is then sent to a medium polar resin column (column volume 2L) with a flow rate of 1BV / h. After treatment, it is eluted with 50% methanol (2L), and the eluate is collected. After suction filtration, vacuum distillation yields 200g concentrated After standing s...
Embodiment 3
[0045] Take fresh natural rubber latex from a rubber factory and centrifuge 10 L of rubber-clear waste water. First, filter it through an alumina microfiltration membrane. The average pore size is 50 nm, the transmembrane pressure difference is 0.1 MPa, and the membrane surface flow rate is 1 m / s. Concentrate the glue clear wastewater to obtain 1 L of concentrated solution and 9 L of microfiltration permeate, adjust the pH of the microfiltration permeate to about 3.0 to 4.0, and then send it to the zirconia ultrafiltration membrane for filtration. The average pore size is 20 nm, the transmembrane pressure difference is 0.3 MPa, and the membrane surface velocity is 2 m / s, and the ultrafiltration permeate is obtained.
[0046] The ultrafiltration permeate is then sent to a medium polar resin column (column volume 2L) with a flow rate of 1BV / h. After treatment, it is eluted with 50% methanol (2L), and the eluate is collected. After suction filtration, vacuum distillation yields 20...
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