Method for recycling desulfurization wastewater

Method for recycling desulfurization wastewater

The invention discloses a desulfurization wastewater recycling method which comprises the following steps: discharging desulfurization wastewater into a buffer pool, reducing the COD (Chemical Oxygen Demand) value in the wastewater by stirring and aerating, precipitating suspended matters in the wat...

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Hauptverfasser: TAO ZHENGYAN, YU YUHANG, PANG JUNBAO, ZHOU CHAOHUI, HOU TIANYOU
Format: Patent
Sprache:chi ; eng
Schlagworte:
CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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creator TAO ZHENGYAN
YU YUHANG
PANG JUNBAO
ZHOU CHAOHUI
HOU TIANYOU
description The invention discloses a desulfurization wastewater recycling method which comprises the following steps: discharging desulfurization wastewater into a buffer pool, reducing the COD (Chemical Oxygen Demand) value in the wastewater by stirring and aerating, precipitating suspended matters in the water, and filtering to obtain filtrate A and filter residue A; the filtrate A is added into a reaction tank, a calcium reagent and an aluminum reagent are added into the reaction tank, and the molar ratio of chloride ion content in the calcium reagent, the aluminum reagent and the filtrate A is 5: 2.5: 1; carrying out solid-liquid separation on the solid-liquid mixture, and filtering to obtain filtrate B and filter residue B; the filtrate B flows into a clarification tank, PAM is added for a flocculation precipitation reaction, and filtrate C and filter residues C are obtained through filtering; feeding the filtrate C into a low-temperature vacuum evaporation system to obtain regenerated water A; discharging the recl
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subjects CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
title Method for recycling desulfurization wastewater
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