Main technical indicators: Non-free nano zero-valent iron reagent A is a green heavy metal reducing agent; an active iron-based reagent with a unique double-layer structure of hydroxyl and anion layers; it has a specific surface area and interface reactivity more than 10000 times larger than that of traditional materials. It has efficient net trapping function for heavy metal ions (copper, lead, nickel, zinc, cadmium, gold, silver, cobalt, etc.) in wastewater. Through the special structure of the non-nuclear nano-iron reagent, it can reduce and adsorb and complex with metals in wastewater, and can simultaneously reduce and adsorb multiple heavy metals, thereby separating heavy metals from water. Non-free nano-iron reagent B is an efficient arsenic removal reagent. Arsenic is a toxic element. Its compounds have trivalent and pentavalent. The toxicity of trivalent arsenic is greater than pentavalent. In arsenic-containing sewage, arsenic mainly exists in the form of H2AsO3, H2AsO4-, and HAsO42-.

Current application status: Widely used in various domestic large-scale mines, smelting enterprises, urban sewage, electroplating wastewater, printing and dyeing wastewater, leather wastewater and other industrial wastewater. It is used in various heavy industry sites in China to reduce sewage emissions, and has very high user evaluations.

Application prospects of "civilian joining the army" or "military conversion": Non-nuclear nano-iron removal of As() and As(V) has the advantages of fast reaction rate and high adsorption and reduction efficiency. It has good application in military field wastewater discharge treatment.