Immobilized enzyme biological reaction device and its application in treatment on nitrite in aquaculture water

• Main Authors: YAN SHIQI, YAN WANLIN, CHEN YUHAN, HUANG YANYAN, SUN LINA, XU YINGCHUAN, LIU DONGMEI, CHEN SIMIN, XIANG NAN, HE MANYUAN, MA JING
• Format: Patent
• Language: Chinese; English
• Published: 24.11.2017
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses an immobilized enzyme biological reaction device and its application in treatment on nitrite in aquaculture water. The device is a rectangular box body and comprises left and right end faces and front, rear, upper and lower box walls. The two end faces are respectively provided with a water inlet and a water outlet. Immobilized enzyme filter plates are vertically arranged in the device along a water flowing direction. The immobilized enzyme filter plates are prepared from polyurethane foam suspensions fixed through a net. A barrier layer is arranged between the immobilized enzyme filter plates. The nitrite reductase is immobilized on the polyurethane foam suspensions, can directly and efficiently treat nitrite culture water and can prevent the nitrite reductase from being dispersed and washed away by waste water. Through the physical water seal effects of nitrite culture water flows, oxygen content of aquaculture water is reduced and the nitrite reductase reaction efficiency is greatly