Production of artificial soils and fertilizers from sewage sludge and inorganic waste.
Authoritative physico-mechanical properties
Bulk density max. PS 100 % – 950 to 1400 kg.m-3, Grain size – total sieve drop 16mm 80-100%, 8mm 60-95%, 4mm 40-80%, 2mm 30-70%, 1mm 20-60%, 0,063 5-30%, Apparent density of solid particles, Moisture 5-35%, Bulk density bulk moist, Permeability – filtration coefficient 1.10-6 to 1.10-4m.s-1, Shear strength – box shear test.15o to 45o, soil cohesion 10 to 50kPa, Ash from absolute dry matter 5-20%, Mass activity 226Ra max. 1000Bq.kg-1
Authoritative biological properties
carbonate Ca and Mg in the ratio 6-8:1, organic matter 10-25%, soil reactions, total sulphur, sorption capacity according to Melich, determination of the content of acceptable nutrients according to Mehlich III acceptable nutrients – phosphorus 400 mg/kg, organic nitrogen is related to the ratio C:N – 15-24:1, magnesium cations – 80-130 mg/kg, potassium – 200-300 mg/kg, clay materials, determination of pH from 6.6-7.7, determination of carbonate content – 2 to 3%, Ecotoxicity, phytotoxicity.
Authoritative chemical properties
Analyses while respecting the ranges according to valid legislative
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