Midge Fly Impact on Wastewater
Midge flies, or chironomids (Chironomidae), commonly occur in wastewater treatment plants and pond systems. The red worm that forms the midge loves the nutrient-rich conditions in a wastewater treatment plant and feeds off bacteria and sludge. The worms will eat mixed liquor and once transformed into adults, clog filters and buildings entrances. Some operators have told us they couldn’t see past their hand in some buildings.
Red worms, also called blood worms, are found in mixed liquor. Over a period of ten days the eggs hatch into red worms and then pass through the pupa stage to become adult midge flies. With no aquatic life to feed on the midges, their life cycle runs uninterrupted, and they multiply fast. If left alone midge flies will cause poor settling, high TSS, and disrupt the bacterial environment.
*There is no LC50 for aquatic organisms except for mosquito larvae. All other organisms except nuisance flies and midges Psychoda, Chironomus, and Chironomine are not affected by the product. Minnows, fish, Daphnia, even other aquatic insects can’t be killed by the active ingredient in the formulation. VectoBac is specific to mosquito, blackfly and midge larvae and again is not toxic to anything in the application sites except the larvae of these targets. The LC50 against susceptible mosquito larvae averages 0.15 micrograms per milliliter
- Wastewater Plants
- Pond Systems
- Drain Lines
- Kills Red Worms and resulting Midge Flies
- Stops Red Worms from eating MLSS
- Bacterial Based