Method for preparing adsorbent from desulfurization wastewater, adsorbent and application

The invention discloses a method for preparing an adsorbent from desulfurization wastewater, the adsorbent and application, and the method comprises the following steps: adding excessive lime milk into the desulfurization wastewater to obtain a magnesium-removed solution; adding calcium aluminate as...

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Bibliographische Detailangaben
Hauptverfasser:	YANG YANKE, DING SHENGLI, ZHANG JIANPENG, TU XIAOFEI, TANG XIAOHUI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	The invention discloses a method for preparing an adsorbent from desulfurization wastewater, the adsorbent and application, and the method comprises the following steps: adding excessive lime milk into the desulfurization wastewater to obtain a magnesium-removed solution; adding calcium aluminate as a seed crystal into the fluidized bed reactor; injecting a magnesium removal solution into the fluidized bed reactor, and adding sodium metaaluminate at the same time to obtain settled calcium chloroaluminate hydrate large crystals; and cleaning and drying the calcium chloroaluminate hydrate large crystals to obtain calcium chloroaluminate hydrate particles with higher purity. According to the method for preparing the hydrated calcium chloroaluminate from the desulfurization wastewater, a nucleation coagulation induced agglomeration technology is innovatively utilized, and calcium aluminate is added as a seed crystal to perform agglomeration and flocculation, so that the hydrated calcium chloroaluminate is attache