Open AccessUse of silt sludge after biological wastewater treatment for crop yields increasing
Author(s) -
A. A. Tikhonova,
И. В. Владимцева,
I.V. Mogilevskaya,
О. В. Колотова,
L. A. Minchenko,
M E Spivak
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1155/1/012076
Subject(s) - aeration , silt , humus , organic matter , wastewater , environmental science , pulp and paper industry , sewage treatment , sewage sludge treatment , straw , mixed liquor suspended solids , agronomy , waste management , activated sludge , chemistry , environmental engineering , soil water , soil science , biology , paleontology , organic chemistry , engineering
Researching the possible use of the silt sludge after biological wastewater treatment from the industrial enterprises for increasing the agricultural crops’ yield was spent. Silt sludge is obtained as a result of biological wastewater treatment in column-type aeration tanks. Founded the concentration’s increase of macro - and microelements in the silt sludge, improvement of the sanitary status and decrease of the heavy metals content after its treatment by the enzyme-cavitation method. Low-intensity cavitation with a cavitation number (0.01-0.05) with air oxygen saturation of the sediment (at least 10 mg/m 3 ) allows for deep organic matter mineralization, dehydration pathogenic microflora’s destruction and dehilmintization. Shown the obtained complex fertilization into soil gives it nitrogen, humus and sulfur and increases the winter wheat’s yield.