Immersible centrifugal pump to circulate waste liquid through the neutralizing loop for sampling, pH sensing, injection of neutralizing liquid and mixing of tank contents
Standard pump motor is 2.0 hp 460Vac; other motors are available.
Strainer on suction side of pump to protect pump clearances
Pressure gauge, isolated and corrosion resistant, on pump discharge
Tank mixing manifold to rapidly distribute recirculated liquid in the tank, speeding system neutralization response time
Process inlet valve – Air operated valve closes when neutralizing tank is at the required tank level. (A small on-board air compressor is optional, for facilities without an air utility.)
Process outlet valve – Air operated valve allows downstream transfer of neutralized liquid when pH is within range AND vessel level is above low level. The valve is installed on the discharge side of the centrifugal pump to allow pumped transfer.
Chemical injection subsystem A – Nominal maximum injection rate of 15 gph (larger injection rates are available if needed) with an extremely large turndown ratio. This subsystem injects acid and includes:
High efficiency venturi in the treatment loop
Direct indicating flowmeter
Metering valve to adjust chemical flow
Check valve in chemical line
Automatic shutoff valve in chemical line
Strainer to protect chemical line clearances
Chemical line pipework for feeding from the chemical supply drum
Chemical injection subsystem B – (Not installed on this one-way treatment system. In two-way treatment systems, chemical injection subsystem B is installed and includes components similar to those listed above for subsystem A.)
Instrumentation and control subsystem includes:
Process computer and operator interface
In-line, self cleaning pH sensor
pH signal conditioner to convert pH signal for use by the process computer
Contactor and overload relay for pump motor
Alarm lamp and buzzer
Alarm interlock output for interface with owner’s alarm system if desired
Modem for remote system operation, monitoring and service
NEMA 4X electrical enclosure
ChemWand® for insertion into the large bung hole of an upright 55 gallon drum. Includes hose, fittings and check valve.
Dimensions
Overall height: 74″
Footprint exclusive of external valves/pipework: 48″x 48″
Capability
In typical situations, neutralization occurs at 10-15 gallons per minute
Skidded systems are available in smaller or larger units as well
