20 THERMO-SYSTEMS Sold In The United States• Examples of Solar Drying Plants in the USA:

Kent County, DE

Natchez , MS

Rio Vista, CAConfidential and Proprietary to Parkson Corporation

THERMO-SYSTEM® Active Solar Sludge Dryer

Confidential and Proprietary to Parkson Corporation 2

Sludge Delivery: By Truck Collection & Distribution: Wheel Loader

THERMO-SYSTEM® Active Solar Sludge Dryer

Confidential and Proprietary to Parkson Corporation 3

Sludge Entry: Underground – Liquid Sludge Sludge Entry: Underground – Dewatered Cake

TOUCH SCREEN HMI CONTROLS

Confidential and Proprietary to Parkson Corporation 4

Enter the data into the THERMO-SYSTEM® PLC interface.

THERMO-SYSTEM® Active Solar Sludge Dryer

Confidential and Proprietary to Parkson Corporation 5

Sludge Tilling Machine: Electric Mole® Electric Mole® accelerates the drying process

THERMO-SYSTEM® Active Solar Sludge Dryer

Confidential and Proprietary to Parkson Corporation 6

Ceiling Fans: Convective Aeration & Drying

Movi-Vent™ Air Circulation SystemExhaust Fans: Chamber Air Exchange

2 h 1h

1 - 6 weeks (Dry solids to 75%+)

LoadingDrying Process

Unloading

THERMO-SYSTEM: Standard Batch Operation

Confidential and Proprietary to Parkson Corporation

THERMO-SYSTEM® Active Solar Sludge Dryer

Confidential and Proprietary to Parkson Corporation 8

Sludge Removal: Front-Wheel Loader Sludge Removal: Front-Wheel Loader

THERMO-SYSTEM® Active Solar Sludge Dryer

Mass reduction: 10MGD Plant Example

Confidential and Proprietary to Parkson Corporation 9

20% DS

18,000 t/yr

De-watered

Mass reduction approx. 85 %

60-90% DS

3,600 t/yr

dried

Active Solar Dryer

Evaporation: 14,400 t/yr

THERMO-SYSTEM® Active Solar Sludge Dryer

Hauling reduction: 10MGD Example

Confidential and Proprietary to Parkson Corporation 10

Active Solar Dryer180 Trucks / yr

Evaporation: 14,400 t/yr

900 Trucks / yr

~$450,000/yr savings for 10MGD plant with $40 per ton hauling and tipping fee costs

Thermo-System O & M Requirements

• Labor: 2 to 4 hours per batch

• Operator attention: Minimal

• Maintenance: Grease Electric Mole after every batch

• Energy: ~ 30kWh per ton of water evaporated

Typical O&M cost is extremely low ~ $5 per wet ton!

Confidential and Proprietary to Parkson Corporation

Installation Pictures

Waimea, HI

Waimea, HI2 drying chamber (42’ x 204’)Drying Water Plant Residuals from 5% to 25% Dry Solids

Confidential and Proprietary to Parkson Corporation

Kent County, DE

Kent County, DE3 drying chambers (42’ x 204’)First all-glass, Venlo-truss construction by ParksonBetter performance and durability!

Confidential and Proprietary to Parkson Corporation

Advantages of the THERMO-SYSTEM

• Green, sustainable technology―Low energy consumption - sun is primary energy source―Very low operating costs

• Robust, easy to operate―Very low operator attention required―Very low maintenance requirements

• Flexible methods of operation • Proven technology - large installation base• Class A and Class B possible – Maximum disposal options

Confidential and Proprietary to Parkson Corporation