In order to assess the opportunities for the implementation of recently developed membrane technology in the agrofood sector, it is proposed to carry out an analysis of the strenghts and the weakness of various options, their related investments and expected operational conditions. In each of the 4 countries concerned by the action, a survey will be conducted in 6 SMEs to investigate concrete possibilities of application of the technology- The proposers will set up for each country an inventory of the energetic, economical and financial stakes of the different technology options in view of the definition of a strategy for the promotion of the membrane technology in the agrofood sector. The results of the action wilt be eventually presented in a workshop with a feedback to the visited enterprises.

• This proceeding allows the purification and the recycling of the wastewater, It essentially consists of a biological reactor for activated sludge together with a module of ultra-filtration. The biological reactor is of heavy loads of sludge (15 to 20 g/1 instead of 3 to 5 g/1 in classical reactor); these sludge circulate to high speed in the circuit of the module (case of the proceeding in external loop). This strong agitation brings a considerable disintegration of the sludge and, at the module outlet, an aeration by air injector is made (case of the proceeding in external loop). The agitation and the forced aeration bring a very big purifying efficiency : for a similar load (9 to 10 kg of BOD5), a setting time of one hour is necessary instead of 24 hours in classical facilities. Water recovered through membranes is lightly treated with bleach in order to keep its absence of contamination. Its quality is such that it can be used again.
• This technology can be of interest for the sectors requiring a biological treatment.. It can be competitive for low volumes " 500 m3/d) even very competitive for very concentrated effluents.
  
• Advantages :
  · Possibility to reach norms with bighly concentrated wastes
  · Compatibility of the system, easy enlarging when needed
  · No solid rejeas plus physical bacterial buher
  · 50% minimum decrease of sludge production (compared to activated sludge)
  · ·Minimal space
  · An interesting financial alternative
  
• Constraints :
  · Maintenance (like all plants)
  · Exploitation costs
  · Acceptation of the technology , agreement of relevant administrations

TMI Europe
Mr BORDEAU
75, Rue de Gerland
69 007 LYON FRANCE
Tel (33) 4 78 69 53 41
Fax (33) 4 78 69 30 23
E-mail : contact

TMI Europe
Mr BORDEAU
75, Rue de Gerland
69 007 LYON FRANCE
Tel (33) 4 78 69 53 41
Fax (33) 4 78 69 30 23
E-mail : contact