... temperature, which is convenient, stable and economical Oxygen Making Machine Specification Model NoBGPOCapacity2~240Nm3/hPurity93±3% ... Under certain pressure, zeolite molecular sieve has different oxygen/nitrogen adsorption capacity, i.e. much more nitrogen ... protect our environment.3. Water process: For oxygen aeration active mud process, reaeration of surface water. fish farming,industrial oxidation ...