Based on traditional biological nitrogen removal theory, nitrogen removal involves nitrification of ammonia to nitrate or nitrite followed by denitrification of nitrate or nitrite to nitrogen gas.
Based on the technology requirements of potassium nitrate production and the properties of materials, a plate heat exchanger was designed for cooling and heat exchange.
根据生产硝酸钾工艺要求与物料特性，设计了用于冷却换热的板式换热器。
3
The continuous determination of arsenic and lead in the solution of the same sample by spectrophotometry is described, based on the reaction between hydrides and silver nitrate.