Further developments in this field have led to development of fluid bed technology in which the fixed film media are made of small plastic materials which are freely moving and non-clogging type.The basic idea behind the Moving Bed Reactor development is to have a continuous operating non-clogging bio film reactor which requires 
(1) No back-washing,
(2) Has low head loss and 
(3) High specific bio film surface area.
This was achieved by having the biomass to grow on small carrier elements that move along with the water in the reactor. The movement within the reactor is generated by aeration in the aerobic reactor. These bio-film carriers are made of special grade plastic having density close to that of water.

Apart from making the plant compact, the fluid bed reactor employing fixed film principle of the attached growth process makes the plant more user- friendly because it does not require sludge recycle i.e. synonymous with conventional ASP. The absence of sludge recycle relieves the operator from the enormous task of measurement and monitoring MLSS levels in the tank and adjusting recycle ratios continuously, due to fluctuating inlet COD loads.
A number of treatment facilities where Moving Bed Reactor technology is used include small Sewage Treatment Plants, City Sewage Treatment Plants for population in Lakhs, industrial sewage treatment plant for food waste, paper waste and chemical waste etc.
One more salient feature of this technology is that it produces much smaller quantity of sludge and what is more, this sludge requires no further treatment such as digestion, due to the fact that it produces digested sludge which does not smell like that in a conventional plant.

Further developments in this field have led to development of fluid bed technology in which the fixed film media are made of small plastic materials which are freely moving and non-clogging type.The basic idea behind the Moving Bed Reactor development is to have a continuous operating non-clogging bio film reactor which requires 
(1) No back-washing,
(2) Has low head loss and 
(3) High specific bio film surface area.
This was achieved by having the biomass to grow on small carrier elements that move along with the water in the reactor. The movement within the reactor is generated by aeration in the aerobic reactor. These bio-film carriers are made of special grade plastic having density close to that of water.

Apart from making the plant compact, the fluid bed reactor employing fixed film principle of the attached growth process makes the plant more user- friendly because it does not require sludge recycle i.e. synonymous with conventional ASP. The absence of sludge recycle relieves the operator from the enormous task of measurement and monitoring MLSS levels in the tank and adjusting recycle ratios continuously, due to fluctuating inlet COD loads.
A number of treatment facilities where Moving Bed Reactor technology is used include small Sewage Treatment Plants, City Sewage Treatment Plants for population in Lakhs, industrial sewage treatment plant for food waste, paper waste and chemical waste etc.
One more salient feature of this technology is that it produces much smaller quantity of sludge and what is more, this sludge requires no further treatment such as digestion, due to the fact that it produces digested sludge which does not smell like that in a conventional plant.