DEPHOSPHORIZATION DEVICE

DEPHOSPHORIZATION DEVICE

PURPOSE:To permit satisfactory removal of the phosphorus carried over into the excess sludge, etc., from an activated sludge treatment, more particularly biological dephosphorization treatment by providing an anaerobic digestion tank and aeration tank for making the aeration treatment of the desorbe...

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Hauptverfasser: TOGAMI YASUTAKA, HORIGUCHI TADAO, KONDO HISAYUKI, NISHIDA MASASHI
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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creator TOGAMI YASUTAKA
HORIGUCHI TADAO
KONDO HISAYUKI
NISHIDA MASASHI
description PURPOSE:To permit satisfactory removal of the phosphorus carried over into the excess sludge, etc., from an activated sludge treatment, more particularly biological dephosphorization treatment by providing an anaerobic digestion tank and aeration tank for making the aeration treatment of the desorbed liquid and/or sludge from said tank. CONSTITUTION:The anaerobic digestion tank 1 and the aeration tank 2 for making the aeration treatment of the desorbed liquid and/or sludge from the tank 1 are provided. More specifically, the sludge into which the phosphorus of the excess sludge, etc., generated from the activated sludge treatment is taken is anaerobically digested and the desorbed liquid and/or sludge thereof is subjected to the aeration treatment to decarbonize the liquid or sludge and to increase the pH thereof, by which the phosphorus component is settled and separated in the form of ammonium magnesium phosphate. The phosphorus is thereby removed, the phosphorus circulation in the treatment system is interrupted and the substantial removal of the phosphorus is attained.
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CONSTITUTION:The anaerobic digestion tank 1 and the aeration tank 2 for making the aeration treatment of the desorbed liquid and/or sludge from the tank 1 are provided. More specifically, the sludge into which the phosphorus of the excess sludge, etc., generated from the activated sludge treatment is taken is anaerobically digested and the desorbed liquid and/or sludge thereof is subjected to the aeration treatment to decarbonize the liquid or sludge and to increase the pH thereof, by which the phosphorus component is settled and separated in the form of ammonium magnesium phosphate. 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CONSTITUTION:The anaerobic digestion tank 1 and the aeration tank 2 for making the aeration treatment of the desorbed liquid and/or sludge from the tank 1 are provided. More specifically, the sludge into which the phosphorus of the excess sludge, etc., generated from the activated sludge treatment is taken is anaerobically digested and the desorbed liquid and/or sludge thereof is subjected to the aeration treatment to decarbonize the liquid or sludge and to increase the pH thereof, by which the phosphorus component is settled and separated in the form of ammonium magnesium phosphate. The phosphorus is thereby removed, the phosphorus circulation in the treatment system is interrupted and the substantial removal of the phosphorus is attained.</abstract><oa>free_for_read</oa></addata></record>
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subjects CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
title DEPHOSPHORIZATION DEVICE
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