Slaughterhouse waste is a very energy-rich waste stream of the meat industry. As such, it is an attractive sustrat to treat through anaerobic digestion for the production of biogas and energy. The waste from slaughterhouses, cattle, pigs, chickens, etc., can be treated and used in digesters for the production of biogas and energy. This biogas plant can process all animal by-products which may not be further utilized such as blood, hind gut, stomach content and fat scrubber content. 

Slaughterhouse waste water

green water+red water 

Based on the characteristic of the slaughterhouse waste, either liquid or solid, slaughterhouse waste is very suitable and has high potential to be treated anaerobically for biogas production. Generally, slaughterhouse solid wastes consists of animal manure, pieces of fat, greaseskin,viscera, lungs, traces of blood, tracheae, pancreas, parts of the intestines, ruminal content, meat, bone, meat, grit, hair and undigested feed which will contribute the  biodegradable of organic matter. The green waters, composed of tripe and rumen washing waters, have a high organic load content and are ideal for the production of biogas. 

Projects developed by aqualimpia in slaughterhouses

Projects Type  Activities Country Year
 El Arreo   Cattle Feasibility study  Costa Rica  2012
Carnes El Pazo Cattle-pigs Construction Venezuela 2013
Macesa Cattle Feasibility study - final design Nicaragua 2014
Proincasa Cattle Improvement and rehabilitaion Nicaragua 2014
Nuevo Carnic Cattle Feasibility study Nicaragua 2014
JBC Cattle  Fesaibility study Brasil 2015
Camaguey Cattle Construction Colombia 2017
Picsa  Pigs Construction Panama 2019

Slaughterhouse waste - wastewater produces biogas

The chemical oxygen demand of the wastewater mixtures of slaughterhouses (red water + green water + washing water) is in the order of 6,000 - 10,000 mg/L.


Anaerobic digestion is one of the best options for slaughterhouse waste management which will lead to production of energy-rich biogas.  Can achieve a high degree of COD and BOD removal from slaughterhouse effluent at a significantly lower cost than comparable aerobic systems. The biogas potential of slaughterhouse waste is higher than animal manure, and reported to be in the range of 80-120 m3 biogas per ton of wastes. 


Biogas can be used as fuel in generators for the production of electricity or in boilers for the production of steam. Using the biogas from animal by-products (ABP) digestion, the  slaughterhouse facility may cover most of its heat demand and some of the electricity requirements. 


A digester in  slaughterhouse  for  500 cattles/day  can produce 2,500 m3 biogas usefull  to install a 250 kW electricity generator. For each 1,000 m3 of biogas used to produce steam, a 20-25 BHP boiler can be installed.


covered lagoon digester for cattle slaughterhouse

Covered lagoon digester for slaughterhouse wastewater - cattle
CSTR lagoon digester - biogas
Biodigestor para residuos y aguas residuales de mataderos - frigoríficos - covered lagoon digester


CSTR lagoon digester slaughterhouse
Covered lagoon digester -Slaughterhouse