Patent ID: 8007560
Filing Date: 2011-08-30
Classification: C05D

Abstract:
1. A method for alkali soil amelioration by using FGD byproduct (lime or limestone/gypsum process) from thermal power plants and facilities, comprising applying said FGD byproduct from thermal power plants and facilities into the alkali soil to be ameliorated, wherein the amount of the FGD byproduct from thermal power plants and facilities is determined by measuring the contents of CO wherein the theoretical application amount of the FGD byproduct from thermal power plants and facilities applied per kilograms of the alkali soil is determined by the following formula (1), wherein: M represents the theoretical application amount of the FGD byproduct from thermal power plants and facilities, kilograms; C represents the percent content by weight of the calcium sulfate in the FGD byproduct from thermal power plants and facilities; Mn represents the molecular weight of the calcium sulfate; M M M M M wherein the actual application amount of the FGD byproduct from thermal power plants and facilities is 110% to 150% of the theoretical application amount , and wherein the relationship between the application amount of the FGD byproduct and the alkalization degree of the alkali soil is as follows: