Sharma J. ;Singh R.,Effect of nutrients supplementation on anaerobic sludge development and activity for treating distillery effluent,Bioresource Technology?,2001, 79(2).
[3]
Johng-Hwa Ahn ;Trong Hoan Do ;Sang D.Kim ;Seokhwan Hwang,The effect of calcium on the anaerobic digestion treating swine wastewater,Biochemical Engineering Journal?,2006, 30(1).
[4]
Van Langerak EPA. ;Van Aelst A. ;Van Lier JB. ;Hamelers HVM. ;Lettinga G. ;Gonzalez-Gil G.,Effects of high calcium concentrations on the development of methanogenic sludge in upflow anaerobic sludge bed (UASB) reactors,Water Research?,1998, 32(4).
[5]
Van Langerak EPA. ;Wiechers J. ;Veeken AHM. ;Hamelers HVM. Lettinga G. ;Ramaekers H.,Impact of location of CaCO3 precipitation on the development of intact anaerobic sludge,Water Research?,2000, 34(2).