Abstract: Disclosed by the present invention are an aqueous polyurethane functional mask substrate and an application thereof. Two kinds of water-based polyurethane dispersions are used as the main components of the mask substrate. The transdermal penetration and absorption of functional ingredients such as whitening, moisturizing and anti-aging ingredients in facial mask products are promoted by means of the special cross-linked structures of polyurethane films. During use, a mask is evenly applied to the face; and after the mask dries, the entire mask may be removed directly or removed after being moistened using water. The mask substrate according to the present invention is also applicable to body masks such as a hand mask, a neck mask and a back mask.

Abstract: A nano zero valent iron biological coupling device for organic wastewater includes a continuous flow stirred reactor, a flocculation sedimentation device and a membrane bioreactor arranged in series. A nano zero valent iron feeding device is arranged in the continuous flow stirred reactor, a flocculant and a coagulant aid are arranged in the flocculation sedimentation device, and a microbial reaction liquid is arranged in the membrane bioreactor. A nano iron biological coupling process includes: S1, placing the organic wastewater in the continuous flow stirred reactor, adding the nano zero valent iron, stirring and mixing; S2, placing the organic wastewater treated after S1 in the flocculation sedimentation device; S3, placing the organic wastewater treated after S2 in the membrane bioreactor and interacting with the microbial reaction liquid; S4, performing a membrane separation on the organic wastewater treated after S3 in the membrane bioreactor to obtain purified organic wastewater.

Abstract: A nano zero valent iron biological coupling device for organic wastewater includes a continuous flow stirred reactor, a flocculation sedimentation device and a membrane bioreactor arranged in series. A nano zero valent iron feeding device is arranged in the continuous flow stirred reactor, a flocculant and a coagulant aid are arranged in the flocculation sedimentation device, and a microbial reaction liquid is arranged in the membrane bioreactor. A nano iron biological coupling process includes: S1, placing the organic wastewater in the continuous flow stirred reactor, adding the nano zero valent iron, stirring and mixing; S2, placing the organic wastewater treated after S1 in the flocculation sedimentation device; S3, placing the organic wastewater treated after S2 in the membrane bioreactor and interacting with the microbial reaction liquid; S4, performing a membrane separation on the organic wastewater treated after S3 in the membrane bioreactor to obtain purified organic wastewater.