Apparatus and Method for Treating Waste Water Containing Ammonium Salts

The present invention relates to the waste water treatment field, and discloses apparatus and method for treating waste water containing ammonium salts, which contains NH4+, S042-, CU, and Nat. In the method of the present invention, sodium sulfate crystal is obtained by freezing 5 crystallization,...

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Bibliographische Detailangaben
Hauptverfasser:	YAN ZHOU, FUZU LIU, YUHUA CHEN, ZHIJIAN LIU, HONGQI GUO, TAO WANG, ZHIWEI YUAN, TAO AN, SONGYUAN GU, XIPING YIN, LING YANG, YE LI, JIN'AI GAO, ZHIMIN ZHANG, HONGLIANG YI, SHUPENG XU
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY METALLURGY TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	The present invention relates to the waste water treatment field, and discloses apparatus and method for treating waste water containing ammonium salts, which contains NH4+, S042-, CU, and Nat. In the method of the present invention, sodium sulfate crystal is obtained by freezing 5 crystallization, then the pH value of the waste water is adjusted to a specific range, and next sodium chloride crystal and ammonia water is obtained by evaporation; alternatively, the pH value of the waste water is adjusted to a specific range, then sodium chloride crystal and ammonia water is obtained by evaporation, and next sodium sulfate crystal is obtained by freezing crystallization. The method of the present invention can recover ammonia, sodium sulfate, and sodium chloride from the waste water respectively, so that the resources in the waste water can be reused as far as possible.