Nitrosobacteria agent for treating ammonia nitrogen in rural black and odorous water body as well as preparation method and use method of nitrosobacteria agent

The invention discloses a nitrosobacteria agent for treating ammonia nitrogen in rural black and odorous water as well as a preparation method and a use method of the nitrosobacteria agent, and aims to solve the problem that in the prior art, a single bacteria agent has a relatively poor treatment effect on ammonia nitrogen in various black and odorous water. The nitrosobacteria agent comprises an acinetobacter bacterial liquid, a Shinella bacterial liquid, a pseudomonas bacterial liquid and a nitrosomonas bacterial liquid. The preparation method comprises the following steps: (1) activating a strain; (2) culturing a bacterial solution; and (3) preparing the microbial inoculum. And the catalyst can be used in a manner of direct addition or addition after immobilization. The direct addition is performed after the nitrosobacteria agent and the black and odorous water body are mixed and cultured. And after immobilization, adding is carried out, namely, sodium alginate, magnetic activated carbon and sodium bicarb