Humus physical-chemical features obtained from biosolids from wastewater treatment processes

Abstract

Global practices of handling, storage, transportation and disposal of organic waste constitute one of the challenges
of complexity and relevance; Since these are considered as a potential focus of pollution of natural resources. One of
the factors, increased incidence, relates to the treatment of domestic wastewater, which has as a by-product the
biosolids; These defined as elements, solid, semi-solid or liquid possessing high content of organic matter (MO) and
nutrients like nitrogen (N), phosphorus (P) and potassium (K); and is considered the possibility of process and take
advantage of them, using different alternatives to reuse. One of them, the technique of vermicomposting, is based
on OM stabilize it by the action of worms of different species, which are able to feed on these substrates, generating humus, which can be used as soil or manure. This research shows the case where developed a system of reactors, with worms of the Californian red species, Eisenia foetida; using as raw material from biosolids from the treatment of wastewater of the New Granada Campus, UMNG, Cajicá, Cundinamarca. Is aimed at generating and measuring a biological process of stabilization that the conditions of the biosolids, where retrieved humus can be used as amendment to the recovery of soils; establishing the physicochemical characteristics of the final product, under the framework of the NTC 5167. And can conclude that it is within the limits established by the regulation, to be used as a soil conditioner, degraded or Decompensated by anthropogenic or natural processes.