Abstract: A multi-node remote pool monitoring system and method is provided. The system includes a master control unit and at least one slave node connected to a piece of pool equipment and serially connected to at least one other slave node in a daisy-chain configuration for transmitting power and data between the nodes. Each node may further be connected to a sensor for monitoring the output of the pool equipment connected to that node. Each relay node has a unique network address by which the master node can address and command or query each slave node to switch a connected relay/load; report the status of the connected load; and report the signal recorded by connected sensors. The data transmitted along the multi-node network and a pool signature may be processed for predicting pool equipment runtime energy demand, one or more operational states of pool equipment and equipment failure.

Abstract: A method and apparatus for removing solids separated from wastewater, or algae from algal solution, using an improved dissolved air flotation system that incorporates a slowly rotating cylindrical sieve at the end of an upward sloping beach to drain free water from the float, which has been pushed up the beach and onto the rotating sieve, and a doctor blade that removes the thickened float from the rotating sieve is disclosed.