Control of liquid treatment processes

摘要

The invention relates to methods and apparatus for treating liquids and lends itself to the continuous processing of many liquid treatments currently effected by batch processes. The raw liquid is continuously passed through a monitoring station where a condition of the liquid is monitored and an additive is supplied to the liquid downstream of the monitoring station in dependence upon the monitored condition, before the liquid and additive are passed to a mixer. Thus, the additive is supplied to the liquid in the exact amount necessary to effect the desired condition of the liquid. The invention has a wide range of uses including removal of solids in suspension in the liquid and the processing of hydroponic feed liquids. In particular the invention is useful for softening water having excessive bicarbonate content.