Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1976-11-24
1978-11-21
Hart, Charles N.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210 16, 210 17, 210 18, 210151, 210199, 210206, 210218, 210DIG28, C02C 104
Patent
active
041265440
ABSTRACT:
There are disclosed a process for removing impurities dissolved in water, and more particularly organic nitrogen compounds, nitrates, nitrites and ammonium compounds utilizing biological processes, comprising the steps of passing in the presence of a normal atmosphere the water to be purified in downwardly flowing manner through a system which ensures ammonification and nitrification, then passing said water in the presence of a nitrogen atmosphere through a system which physically expels oxygen, then passing said water once again in the presence of a nitrogen atmosphere through a system which biologically reduces nitrates, and finally after draining off the gases formed from the impurities, removing purified water and an apparatus for carrying out said process.
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Baensch Ulrich
Benedetto-Castro Luis-Alberto
Hart Charles N.
Tetra Werke, Dr. rer. nat. Ulrich Baensch G.m.b.H.
Therkorn Ernest G.
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