Method for producing heavy metal cadmium blunting agent utilizing the activity of sulfate-reducing bacteria in paddy soil and method for using the same

摘要

The present invention belongs to the field of environmental protection, and particularly relates to a heavy metal cadmium blunting agent that utilizes the activity of sulfate-reducing bacteria in paddy soil and its application. The heavy metal cadmium blunting agent is not only an electron donor, but only an electron shuttle, or an electron shuttle and an electron donor, and the mass ratio of the electron donor to the electron shuttle is (1: 3) to (1: 8). The supply source of the heavy metal cadmium blunting agent is wide, the manufacturing process is simple, and large-scale factory production is possible. According to the present invention, there is further provided a method for blunting heavy metal cadmium by making use of the activity of sulfate-reducing bacteria in paddy soil, and sulfate is added by adding the functional blunting agent to paddy soil. Utilizes the activity of microorganisms such as reducing bacteria, accelerates the reduction process of sulfur and iron in the soil, promotes cadmium fixation, reduces the absorption and accumulation of cadmium in rice, moderately mild cadmium contaminated paddy field Can be produced safely. And this method is easy to spread to a wide range, without disturbing paddy field agricultural production. [Selection] Figure 2