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Determination of the content of nutrients in liquid animal waste
Table 1 - Results of studying samples using an atomic adsorption spectrometer
The name of indicators | Samples studied | |||
original sludge from a pig farm before processing (dried) | pig farm waste sludge after reagent coagulation (dried) | |||
Actual value | Measurement error (with confidence probability p=0.95) | Actual value | Measurement error (with confidence probability p=0.95) | |
Mass fraction of dry matter, % | 90,85 | ±0,41 | 92,99 | ±0,41 |
Mass fraction of nutrients in samples with initial humidity,% | – | |||
Total nitrogen | 8,2 | ±0,1 | 3,34 | ±0,2 |
Total phosphorus, calculated as P2O5 | 0,7 | ±0,05 | 4,05 | ±0,2 |
Total potassium, expressed as K2O | 0,14 | ±0,01 | 0,22 | ±0,03 |