C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 9/06 (2006.01) C02F 1/26 (2006.01) C02F 1/44 (2006.01) C02F 1/461 (2006.01) C02F 1/58 (2006.01) C02F 1/66 (2006.01) C02F 9/02 (2006.01) C25B 1/00 (2006.01) C25B 9/00 (2006.01) C25B 15/08 (2006.01)
Patent
CA 2631080
A new system is disclosed for extracting ammonia from a wastewater stream, and for transferring the ammonia into the secondary water circuit, where the dissolved ammonium is electrolysed and transformed into gaseous nitrogen. The new system makes use of a membrane of gas--permeable hydrophobic material. The wastewater is raised to pH of 11, and 50°C, to make the transfer of ammonia through the membrane more efficient. Also disclosed is a process-control system for the ammonium disposal system, in which pH sensors are used to control operation. Instruments for measuring ammonia-concentration directly are expensive, whereas pH- sensors are simple, reliable, and responsive. Disclosed are procedures for establishing the relationships between pH and the progress of the ammonium disposal treatment.
Seed Leonard P.
Shelp Gene S.
Asquith Anthony
Enpar Technologies Inc.
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