Larned, Kansas – Waste Water Treatment Plants

Larned Case Study

Constant Evolution

SEGMENT: Waste Water Treatment Plants
SOLUTION: Rotary Fan Press
LOCATION: Larned, KS
LAUNCH DATE: March, 2023

Also known as the City of Larned Water Recycling Center, the plant was in desperate need of a treatment operation update, specifically the mechanical dewatering equipment. When the new plant superintendent, Dale Vanderhoof, took over, he was tasked with turning the facility around and making it a functional plant that was not discharging what they called “black water” into the Arkansas river. Under Dale’s supervision, the city has received awards over the past several years for “Outstanding Plant Performance.”

From the minute the pilot started, Dale and his team were excited about the technology. Not only was the cake much dryer, and the filtrate much cleaner, but the machine was quiet, and there was no mess. The capture rate with the Rotary Fan Press® is 95%.

The biggest test Dale had was if the machine would run unattended overnight. He wanted his team to be able to walk away from the machine during the day and focus on other duties, and have it run overnight without being monitored on-site, to increase their processing capacity. When this was proven out overnight during the pilot, that sealed the deal! The Rotary Fan Press® requires minimal maintenance and has only one wear part, a brass scraper to keep the filtration elements clean, which is suggested to be replaced every 5,000 to 10,000 hours, costing approximately $400 per channel.

Prime’s Rotary Fan Press is sold with one to six channels, depending on capacity requirements. The slow-moving technology is safer, cleaner, and more robust. Operator attendance on the Rotary Fan Press® is minimal. Start-up and shutdown take no more than 30 minutes combined, and if there are no upsets in the process, the machine should be able to run continuously until it is shut down manually or by a time assigned to the machine. When shut down, the machine will go through a complete wash cycle (which is controllable by the operator) and shut itself down.