Process for reclaiming ammonia-contained sewage

Application Number: 00110589
Application Date: 2000.06.28
Publication Number: 1331053
Publication Date: 2002.01.16
Priority Information:
International: C02F9/04
Applicant(s) Name: Chinese Petro-Chemical Group Co
Inventor(s) Name: Guo Hongshan;Han Jianhua;Lin Daquan
Patent Agency Code: 21102
Patent Agent: li wei
Abstract A process for treating and recovering the ammonia/ammonium contained waste water generated in preparing catalyst includes reverse-osmosis concentration of the said waste with low ammonia content, direct use of the resultant liquid or partial use of it as the ammonia vapour absorbing liquid in stripping tower, mixing the concentrated liquid with the high-concentration the said waste water, adding alkali to regulate pH value, loading in stripping tower to recover ammonia from tower top and discharging the clean water. Its advantages include low energy and chemical consumption, and high recovery rate.