Odor Control System Beats Foul Smell in Indiana Neighborhood

This content is sponsored by Geomembrane Technologies Inc. Sponsored content is authorized by the client and does not necessarily reflect the views of COLE Publishing. View our privacy policy.
Odor Control System Beats Foul Smell in Indiana Neighborhood
After researching several cover systems, the South Dearborn Regional Sewer District in Lawrenceburg, Ind., chose covers fabricated and installed by Geomembrane Technologies Inc. (GTI).

Interested in Tanks?

Get Tanks articles, news and videos right in your inbox! Sign up now.

Tanks + Get Alerts

The Customer:

The South Dearborn Regional Sewer District in Lawrenceburg, Ind., provides regional wastewater treatment services for three cities and an international distillery. The 6 mgd treatment plant is located in an area of high population growth, and is surrounded by many retail operations and other commercial developments. In addition, a heavily traveled state highway runs by the treatment plant. 

The Customer’s Needs:

As the community grew, wastewater treatment plant managers at the South Dearborn Regional Sewer District saw an increase in complaints from neighbors about a foul smell lingering in the area. Odor complaints became a sensitive issue and the District Sewer Board knew they needed to address the problem. 

The district’s initial attempts to treat or mask odors coming from their primary clarifiers were unsatisfactory. 

“The district could manage odors for six and a half days in a week and then have an unexpected ‘odor event,’ ” says Dennis Feichtner, district superintendent of the South Dearborn Regional Sewer District. “Then the telephone calls would start again.” 

It became apparent that neighbors’ perceptions did not change so long as odors were occasionally present. 

The District Sewer Board was committed to solving the problem. With the assistance of the district’s consultants, GRW Engineers Inc., they evaluated alternative approaches to odor control and decided to purchase covers that would work with a ventilation and scrubber system to positively capture, remove and treat odorous gas. They needed a cover system that reliably captured and contained odorous gas while providing features that met their operational needs. 

The Solution:

After researching several cover systems, the district chose covers fabricated and installed by Geomembrane Technologies Inc. (GTI). A customized cover design made the GTI cover system an attractive choice for the district. Other factors included GTI’s ability to deliver a quality cover system that featured a competitive price while fitting within the constraints of the existing infrastructure. 

Each clarifier is now covered by a high-performance coated fabric tensioned over a series of aluminum support arches placed along the length of the tank opening. This industrial cover fabric is proven to be effective in a wastewater environment and also features UV protection.

Aluminum walkways divide the fabric covers into manageable sections, which are easily detached on three sides and rolled up along the support arches to expose the tank interior for inspection of maintenance.

Hatches in the walkways are located at key points to provide access for a single operator to take samples, inspect equipment, tip scum troughs, etc. 

The level of cooperation between the plant operators and GTI’s installation crew was excellent. The district superintendent and plant operators took an active role in planning and installing the entire odor control system. With this assistance, the covers were installed in less than a week — without taking the clarifiers out of service. 

The Results:

Thanks to a blower and underground piping system between the covers and the scrubber, the district is now able to capture and treat odors from its headworks, primary clarifiers, and belt press building. 

GTI addressed constraints imposed by the physical configuration of mechanical and electrical systems associated with the existing clarifiers. The cover design was modified to fit within these constraints, which saved the district from incurring the additional cost of changing their existing system. 

Easy access to the tank interior is a key feature for the district’s plant operators. The need for complete tank access is not always part of a planned maintenance activity. Sometimes access is required quickly because of mechanical problems; the ability to easily retract the covers without the aid of lifting equipment carries a significant timesaving advantage, especially in the case of an emergency. 

Most importantly, GTI’s odor control system has helped the South Dearborn Regional Sewer District become a good neighbor. “Odors have disappeared from our plant,” Feichtner reports. “The subject of odor complaints used to arise so frequently that it was a standard agenda item in District Sewer Board meetings. Now we receive positive comments from the public.” 

For more information, visit www.gticovers.com or contact Brent Howe, GTI product line manager, at brent.m.howe@gticovers.com or 506/449-0993.



Discussion

Comments on this site are submitted by users and are not endorsed by nor do they reflect the views or opinions of COLE Publishing, Inc. Comments are moderated before being posted.