Saline-sodic soils amelioration with sintering flue gas desulfurization gypsum
WANG Zheng1，CUI Heng1,2
1. Engineering Research Institute， University of Science and Technology Beijing， Beijing 100083， China 2. Collaborative Innovation Center of Steel Technology， University of Science and Technology Beijing，Beijing 100083， China
Abstract：In order to solve the resource utilization of sintering flue gas desulfurization gypsum in steel companies， the gypsum was applied to amend saline-sodic soils. In this paper the composition and content of heavy metals and dioxin of desulphurization byproducts from different sintering flue gas desulfurization processes were studied to explore the possibility of soil transformation. The analysis indicated that the wet-type desulphurization gypsum of sintering flue gas can be applied to saline-sodic soils amelioration， not as the dry-type desulphurization gypsum. Then the effects of application amount and leaching times on pH， salinity and sodium adsorption ratio of saline-sodic soils were evaluated in soil-column experiment. The experiments validated the feasibility of saline-sodic soils amelioration with sintering flue gas desulfurization gypsum and provided a theoretical basis for practical application.
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2015, Vol. 50 
