Process monitoring and controlling for wastewater treatment industry - Water and Wastewater - Water Treatment
Measurements such as pH and Conductivity are extensively employed to monitor acids and bases after CIP - Clean In Place and for neutralisation of effluent. More recently, TOC has been successfully used to trend organic load discharge and output a signal to divert high strength effluent streams. Turbidity is also used to quantify the physical characteristic of a sample.
Alarm signals from these instruments can be connected to control systems that may proportional dose chemicals, adjust aeration or even operate actuated valves to contain process effluent. Containment is often the simplest and lowest cost option.
The 'Terminator' has been designed by PPM to provide a simple, low cost but effective solution to abate pollution discharge. Typically, it requires no costly civil engineering to install the unit connects to one or more instruments that generate an alarm signal. The device inflates a PIG (an inflatable balloon) which is located inside the discharge pipe to contain high strength effluent, which may be diverted or pumped elsewhere. The control system is compact and self contained - all it requires is a power supply and an alarm output from a suitable instrument.