초록 ▼

An automatic feedback control system for a water treatment apparatus, such as a recirculating solids contact clarifier, that maintains steady-state operation of the clarifier by accurately measuring the concentration of suspended solids at designated portions of the clarifier and automatically adjus

An automatic feedback control system for a water treatment apparatus, such as a recirculating solids contact clarifier, that maintains steady-state operation of the clarifier by accurately measuring the concentration of suspended solids at designated portions of the clarifier and automatically adjusting clarifier variables to maintain optimum conditions despite changes in the inlet flow rate, composition or temperature.

대표청구항 ▼

An automatic feedback control system for use with a recirculating solids contact clarifier having a reaction zone, a flocculation zone, a separation zone, a raw water inlet, a treated water outlet, a recirculator member, an adjustable chemical inlet and an adjustable sludge blow off outlet, comprisi

An automatic feedback control system for use with a recirculating solids contact clarifier having a reaction zone, a flocculation zone, a separation zone, a raw water inlet, a treated water outlet, a recirculator member, an adjustable chemical inlet and an adjustable sludge blow off outlet, comprising: first, second and third suspended solids concentration measuring devices, one device each for the respective reaction, flocculation and separation zones, each of said devices providing a substantially continuous output which provides an indication of the amount of suspended solids present at least at a particular portion of said respective reaction, flocculation and separation zones; and an automatic regulator member in operable communication with said first, second and third measuring devices and with the recirculator member, adjustable chemical inlet and adjustable sludge blow off outlet, said regulator member capable of detecting a difference between established set points and said outputs of said first, second and third measuring devices and automatically adjusting at least one of said recirculator member, said adjustable chemical inlet and said sludge blow off outlet to adjust the level of solids within the clarifier to an optimum level.