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Investigation on ammonia wastewater of high concentration removal in a certain fertilizer plant with air stripping show that with appropriate temperature, pH and steam quantity and pressure, when concentration of NH/-N in inlet is about 1300 mg/L, removal efficiency can reach to 96% or above. Wastewater after treatment can meet the discharge demand. Ammonia with reclaiming treatment will not cause...
Addition of urea-based antifreeze admixtures during cement mixing can make it possible to produce concrete cement in construction of buildings in cold weather; this, however, has led to increasing indoor air pollution due to continuous transformation and emission from urea to gaseous ammonia in indoor concrete wall. It is believed that ammonia is harmful to human body and exposure to ammonia can cause...
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