WELCOME

TO THE KENNEBEC WATER DISTRICT FILTRATION PLANT

CONTROL CENTER

The Brain of the process. Each switch controls a valve or a pump. Analog analyzers can be used to monitor parameters at a glance.

SCADAINTERFACE

Operations are performed, recorded, monitored, and analyzed through this Interface.

LAB

Water quality parameters are routinely measured and recorded here.

LAB

Chlorine residual is measured by introducing a reagent to a sample cell containing finished water. The sample is measured in the spectrometer.

MICROBIOLOGICAL LAB

Weekly samples from the distribution system are tested for coliform bacteria here. Lake samples are also processed and reviewed here.

Additional tests are run at independent laboratories.

PROCESS AREA

This room houses the bulk chemical tanks and feed pumps used to inject chemicals.

ALUMINUM SULFATE- COAGULANT

Used to increase the size of the matter to be filtered by chemically bonding impurities.

CATIONIC POLYMER- COAGULANT

Helps to produce larger floc, conditions filters.

POLYALUMINUMCHLORIDE- COAGULANT

Used during high algae periods in lieu of Alum and Cat Poly.

SODIUM HYPOCHLORITE- DISINFECTION

Added to deactivate any bacteria that may come in contact with the finished water.

SODIUMHYDROXIDE- PH ADJUSTMENT

A base, used to increase pH to a suitable level to prevent pipe corrosion and ensure palatable drinking water.

HYDROFLUOSILICICACID- FLUORIDATION

A consumers vote in 1965 mandated the district add fluoride toprevent tooth decay.

POLYPHOSPHATE

Used to form a lining inside pipes to inhibit the leaching of lead and copper.

PUMPROOM

China Lake water travels by gravity to the base of these pumps where it is lifted roughly 20’ through the clarifiers.

PIPEGALLERY

Water is directed to and from the filters through a network of pipes and valves.

FILTER BAY

3 upflow Clarifiers and 6 Granular Activated Carbon Filters remove impurities from the raw water.

BOILER ROOM

Two boilers installed in 2011 replace 6 boilers from 1992Expected Annual Fuel savings - 30%

GENERATOR ROOM

Used to run the process in the event of power failure.

CLEARWELLS

2 million gallons of storage enables required contact time for chlorine reaction.

LAGOONS

When the filters and clarifiers becoming overloaded with floc, they must be backwashed

or flushed. This water is sent to a lagoon. When the lagoon becomes full it is taken offline

and allowed to dry before the material and scraped and transported away.Check out our PROJECTS tab for more information about exciting new

uses for this waste product!

Boilers 2011Chemical Feed Pumps 2011-2013PLC 2011-2012

UPGRADES

We are in the process of upgrading ourchemical feed pumps. The new pumpswill give us more control and enhancedsafety.

Milton Roy Positive Displacement Pump

Thermo Scientific Peristaltic Pump

The analog board will soon be a distant memory as we have commenced work on A new programmed logic controller (PLC). This board will disappear and be replaced

By additional features on the existing SCADA system.

THANK YOU FOR TOURING OUR FACILITY!

We would be happy to walk you through the plant in person.Please call (207) 923-3358 to schedule a visit.