| 摘要 |
PURPOSE: A sludge solidification composition is provided to prevent soil pollution and suppress the generation of ammonia gas, to reduce curing time, and to improve strength. CONSTITUTION: A sludge solidification composition is formed by mixing 35-50 wt% of red mud with a particle size of 6-10 um; 10-15 wt% of one kind of Portland cement with a granularity of 2,800 cm^2/g or greater; 7-10 wt% of CaO with a particle size of 70-80 um; and 18-25 wt% of aluminum sulfate with a particle size of 5-10 mm. The pH of the red mud is 7.5-9.5, and the red mud contains 25-45 wt% of Fe2O3, 15-25 wt% of Al2O3, 10-20 wt% of SiO2, 4-10 wt% of TiO2, and residual CaO, MgO, and Na2O. [Reference numerals] (AA) Sewage sludge dehydrated final sludge cake; (BB) Inject sludge solidification composition; (CC) Stirring; (DD) Curing; (EE) Completing manure |
