The invention discloses a composite
fiber woven net active microbial carrier for treating
nitrogen-containing
wastewater as well as a preparation method and application of the composite
fiber woven net active microbial carrier. The active microbial carrier is formed by weaving
titanium wires, rock
wool wires, iron-carbon twisted wires and PLA wires, has high
biocompatibility and high specific surface area, keeps high
mechanical strength, can promote efficient
biofilm formation of
denitrification sludge, and can promote
quick start of a reactor and improve the
denitrification effect after successful
biofilm formation. According to the application, the requirements of'plastic reduction and plastic forbidding 'are met, the traditional plastic biological filler is replaced, the technical problem that micro-plastic particles are released due to degradation in the use process of the filler is solved, the requirement of
green development is met, and remarkable economic and
ecological environment values are achieved. Iron wires and
carbon fibers in the iron-carbon stranded wires form a
primary battery in the reactor, controllable
dissolution of iron ions is spontaneously accelerated, driving is not dependent on external potential, and the concept of low carbon and
environmental protection is met; additional
carbon source adding is reduced through the PLA filaments, and the PLA filaments are further matched with the low-carbon and environment-friendly concept.