High hardness ammonia nitrogen wastewater treatment and resource technology

Scope of application: high hardness ammonia nitrogen wastewater, high concentration ammonia nitrogen wastewater, ammonia-containing wastewater, ammonia water recovery, ammonia gas recovery, ammonia nitrogen wastewater recycling

Typical industries: ternary precursors, new energy, fine chemical, coal chemical, petrochemical, non-ferrous metals, rare earth, metallurgical and other industries

Technical introduction:

High-concentration ammonia nitrogen wastewater in some industries often contains higher concentrations of calcium and magnesium ions, which can easily cause scale formation during deamination, block tray packing or heat exchangers, and even affect ammonia nitrogen removal. Based on many years of engineering practice, our company has proposed an optimized process design solution to solve such problems, that is, a number of protection measures are set before the deamination system. The scale pretreatment system CN201520608367.1) is used as a pretreatment system to remove calcium and magnesium ions in the wastewater to ensure the efficient and stable operation of the ammonia removal and recovery system.

At the same time, the self-developed new tray technology (patent name: a U-shaped tray CN201520646904.1 for stripping distillation of wastewater deamination) is used; the effective mass transfer of the tray is divided into a rectangular mass transfer zone and a crescent-shaped mass transfer zone; The trays in the rectangular mass transfer area adopt a U-shaped structure, and air holes are opened on both sides of the U-shaped structure, so that both sides of the U-shaped structure can fully transfer mass, and the effective mass transfer area is fully utilized, thereby improving the processing capacity and operation. Elasticity; the tray is operated in the spray state, the gas velocity is high, and it has the ability of washing and self-cleaning of particles, polymers, dirt and other impurities, preventing the problem of tray scaling and clogging.