Problem: The Sun ‘n Lake Improvement District in Sebring, Fla., experienced a loss of detention volume and reduced water quality as a result of accumulated sand and grit at one of its wastewater treatment plants. The district contemplated a major capital expansion to increase the functional capacity and efficiency of its 700,000 gpd facility.

Solution: The district hired Polston Applied Technologies to help with the problem. They developed the PAT 949 Combination Truck and a method, called the Polston Process, to remove accumulated sand and grit while the plant remains in operation. 

Result: The unit pulled more than 175 cubic yards of accumulated sand from the wastewater treatment plant without taking the system offline. The district was able to indefinitely put off the capital expansion. 941/444-1440; www.polstonprocess.com.