This news article was originally written in Spanish. It has been automatically translated for your convenience. Reasonable efforts have been made to provide an accurate translation, however, no automated translation is perfect nor is it intended to replace a human translator. The original article in Spanish can be viewed at Hacia una gestión del ciclo del agua sostenible

Improve the autosuficiencia of the debuggers, increasing the potential of the biogás generated of slimes

To a management of the cycle of the sustainable water

Editorial Interempresas23/04/2012

23 April 2012

How improve the energetic and economic balance in the urban debuggers taking out the maximum aprovechamiento of industrial currents of high organic load. This is one of the big challenges to which confronts the sector in the actuality and that posed in the day ‘Last tendencies in the management of the water', organised by the technological centre Ainia the past 20 April.

A debugger can arrive to obtain a 30-50% of his power through the digestion anaerobia of the slimes. The technology of the digestion anaerobia is the process in which microorganisms decompose biodegradable material in absence of oxygen to generate, for example, methane. Besides, in the day organised by Ainia aimed that 30% more than power can reach by means of strategies of pretratamiento that pursue the disgregación cellular of the bacteria that forms the slime, facilitating the digestion anaerobia back.

Strategies for the treatment of the slimes

In this sense, tackled two new strategies centred in the optimisation of the treatment of the slimes generated by these installations: the application of pretratamientos advanced that they do them more easily degradables biologically, and the conjoint treatment or codigestión of the slimes with external organic waste to the debugger.

A debugger can obtain between a 30 and 50 % of his power through the technology based in the digestion anaerobia

Pretratamientos

The first strategy based in pretratamientos consists in the application of ozone, cavitación hydrodynamic or ultrasonic, etc. that allow hidrolizar and/or increase the biodegradabilidad of the slime and like this improve the ratio of production of biogás in the process back of digestion anaerobia.

Codigestión

The second strategy is that said digestion do , in addition to with slimes of the debugger, with organic waste mattered of next alimentary industries, in a process of conjoint treatment designated codigestión. Like this, it attains increase the production of biogás and improve the energetic and economic balance of the installation.

Ainia Presented his proposals in this matter such as the ozone or the cavitación oxidativa, and also showed his intention to build a plant of oxidation supercrítica of slimes of depuración.

Other challenges

On the other hand, the footprint hídrica or quantity of necessary water to obtain a unit of alimentary product is another challenge that planet. In spite of being a subject very incipiente, exists already a tendency in the alimentary industry to link the consumption of water and of production of waste water by unit of production (ej. Litres of milk or kg of product cárnico) that goes to allow compare ratios of efficiency between industries.

Finally, the debate on emergent waste in the waters - derivative substances of drugs (antibiotics, analgesics, etc.), pesticidas, amongst other a lot of - has been others of the points treated in a day headed to alimentary industries, agricultural cooperatives, farms, pharmaceutical industries, cosmetic, chemical and urban debuggers. In this sense, has analysed the state and evolution of the rule, the technicians of analysis more advanced for his control.