Chemical Safety Science, 2017, Volume 1, No 1, p. 158 — 167

 

Utilization and biodegradation of wastes

 

UDC 631.8:633.2                                                                          Download PDF (RUS)

DOI: 10.25514/CHS.2017.1.11441

 

SOLUTION TO PROBLEM OF URBAN SEWAGE SLUDGE UTILIZATION

 G. E. Merzlaya, and R. A. Afanas′ev

 Federal State Budget Scientific Institution “Pryanishnikov All-Russian Scientific Research Institute of Agrochemistry”, Moscow, Russia

Received March 12, 2017

Published June 26, 2017

Abstract — The problem of recycling the constantly accumulating sludges of municipal sewage can be solved by creating on their basis organomineral granular fertilizers. The results of research are presented regarding determination of the effect and aftereffect of municipal sewage sludge and composts on their basis in relation to field crop rotation of agricultural crops, i.e. fiber flax, potatoes, barley. The effectiveness of the proposed method is confirmed by the fact that using the prepared compost and organomineral fertilizer has ensured an increase in the productivity of all crops of crop rotation by 16-25%, compared to the control. The normalized usage of fertilizers based on urban sewage sludge did not cause an exceeding the content of heavy metals and arsenic both in soil and in plant products, over the permissible levels.

 Keywords: fertilizers based on sewage sludge, organomineral fertilizer, heavy metals, field crops, soil, plants.