Nefco Launder Covers

Nefco Launder Covers Prevent Algae Growth, Combat Foul Odors

The NEFCO Launder Cover is designed to inhibit the growth of algae on launder troughs and weirs by minimizing incident sunlight on these surfaces while keeping leafs and other airborne debris out. Additionally, they can be modified to help contain foul odors. It is estimated that over 80% of the odors in the clarifier are produced when effluent breaks over the weir and flows into the launder channel.

Contact your HPT salesperson to learn more!



NEFCO’s Stamford Density Current Baffle Version 2.0

The first improvement in density current baffle performance in 30 years: NEFCO Stamford Density Current Baffle Version 2.0. Check it out on You Tube:

NEFCO has recently completed a multi-year CFD Baffle Design Study that led to the development of Stamford Baffle 2.0. SB2.0 is 30% more effective than the original 45o Stamford Baffle. The new 30o baffle with increased horizontal projection reduces TSS as much as 70%! SB 2.0 is the most advanced and effective DCB available today!

-Increased horizontal projection
-30° Inclination angle
-Integrally molded bracket
-Rugged construction
-Corrosion resistant
-5 Year warranty

-Reduces clarifier TSS by as much as 70%
-Reduces turbidity
-Improves hydraulic capacity
-Installs in half the time of other baffles


NEFCO Launder Covers

NEFCO Launder Covers – a look under the covers after 5 years at Delaware, OH WWTP  –Follow the link below to effective control of algae on weirs and effluent lauders.

Nefco Launder Cover System








Finished NEFCO installation








Delaware, OH WWTP-Underneath, 5 years later



The NEFCO Launder Cover System – a low cost solution to a very expensive problem.

Is Algae becoming more than a nuisance?  NEFCO Launder Covers are changing the way treatment plants deal with algae. In plant after plant equipped with the NEFCO launder cover system, once-a-week scrubbing has become a thing of the past and operations equipment problems caused by algae have been eliminated. Made of UV and corrosion resistant fiberglass, each launder cover is custom engineered to fit each clarifier.  Each cover section is hinged, opens away from the operator, giving easy access to the trough and locks securely in place.  Best of all, launder covers are maintenance free and cost nothing to operate!

 Functions of the launder covers include:

-Elimates Algae Growth
-Contains Odors
-Keeps out snow, ice and debris

Contact your local HPT representative and start gaining control over algae problems today!

Click here to view the NEFCO Launder Cover Brochure.