Читать книгу Automation of Water Resource Recovery Facilities - Water Environment Federation - Страница 247

The following are typical controlled variables used for automatic control:

• Sludge removal valve (open–close),

• Sludge pump (on–off),

• Scum removal trough (up–down),

• Scum pit mixer (on–off), and

• Scum pit pump (on–off).