| 摘要 |
A device for controllably releasing a first fluid 20 containing a bacterial cocktail into a second fluid 2, comprises at least one fluid release means 21 connectable to a fluid supply 19 and being submersible in the second fluid 2, control means, and measuring means to measure at least one parameter which is characteristic of the composition of the second fluid, wherein when a measured parameter reaches a pre-determined threshold value the control means reduces or increases either the volume of first fluid 20 supplied to the fluid release means 21 or the concentration of at least one constituent of the bacterial cocktail in the first fluid 20. The measured parameters include pH, ammonia concentration, phosphate concentration, COD and BOD. Preferably means are provided to collect solid matter falling through the second fluid, the means being either a tray, mesh, fabric or layer capable of base ion exchange and being formed of either a zeolite, bentourite or clay material. |
