Abstract
A wastewater plant of a dairy industry generates 1.6 tons/month of settleable solids and 650 kg/week of floatable solids, which if not adequately disposed off, can cause serious soil contamination and vector attraction. A composting process for stabilizing residues with high fat content that generate unpleasant odors is presented. Laboratory experiments were carried out for determining the appropriate process parameters, and scaled-up for the in situ process. Laboratory tests with cattle manure showed a reduction in the production of malodorous gases in three weeks. The resulting compost complied with national and international standards, andcan be used in l:3 compost:soil ralio for ioil improvement. The waste stabilized in situ complied with most parameters established in the Mexican regulation (NOM-FF-109-SCFI-2007), excepting pH (9.6) and electrical conductivity (5 dS/m).
| Translated title of the contribution | Stabilization by co-composting of solids removed from wastewater treatment plant of a cheese factory |
|---|---|
| Original language | English |
| Pages (from-to) | 61-71 |
| Number of pages | 11 |
| Journal | Revista Mexicana de Ingeniera Quimica |
| Volume | 14 |
| Issue number | 1 |
| State | Published - 2015 |
Keywords
- Co-composting
- Compost quality
- Cost
- Dairy cattle manure
- High grease content res idues