Ammonia wastewater treatment method and its device prevent the generation of nitrate ions (NO3-) and ensures no residual nitrite ions (NO2-), thereby achieving efficient, accurate, and non-toxic treatment results for ammonia wastewater

• Main Authors: LIN, HAN-LIN, YANG, GENG-HAO
• Format: Patent
• Language: Chinese; English
• Published: 16.07.2024
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The present invention relates to a method and a device for treating ammonia wastewater. The device mainly includes an ammonia wastewater storage tank for storing ammonia wastewater, at least one ammonia nitrogen detection element for detecting the ammonia nitrogen content in the wastewater, at least one aeration device connected to the ammonia wastewater storage tank, an oxygen transfer coefficient calculation device info-linked to the aeration device, and an aeration time control unit and a gas flow control unit arranged on the aeration device. Through adjusting the output time and output quantity per unit time of the aeration device, and calculating the relationship between the oxygen transfer coefficient and the aeration flow rate of the aeration device, a precise control of the total oxygen mass entering the ammonia wastewater treatment tank can be achieved. Therefore, the ratio of ammonia nitrogen mass to oxygen mass can be controlled so that it ensures that ammonia nitrogen is oxidized only to nitrite i