Floating water plants can clean up dairy farm wastewater
M S M, H C C, N D, Lalhruaizela T, M K D
Phytoremediation
The water hyacinth choking your local pond isn't just a nuisance weed, it's actively pulling pollutants out of the water it floats on.
Researchers floated water hyacinth and water lettuce in dairy wastewater to see how well they could clean it up. After 15 days, the plants soaked up a lot of the organic pollution and dissolved solids, with water hyacinth cutting one pollution measure by more than half. It's a low-cost, no-chemical way small dairy farms and rural towns could treat their wastewater using plants instead of expensive machinery.
Key Findings
Water hyacinth (Eichhornia crassipes) showed the best performance for reducing BOD (biological oxygen demand), followed by Egeria densa
Water hyacinth reduced total dissolved solids (TDS) by up to 58.5% after 15 days of treatment
Initial wastewater loads averaged 800-1300 mg/L BOD and 1700-2999 mg/L COD, both significantly reduced across lab and pilot-scale trials
chevron_right Technical Summary
Common aquatic plants like water hyacinth and water lettuce can clean up dairy wastewater by soaking up pollutants, offering a cheap, low-tech treatment option for small dairies and rural communities.
Abstract Preview
Original paper
Application of selected indigenous plants for dairy effluent treatment through a phytoremediation approach.
Process Sewage generated from the dairy processing industry authorities includes high ranges of organic material, suspended solids, nutrients and dissolved solids and can cause adverse impacts to r...
open_in_new Read full abstractAbstract copyright held by the original publisher.
Species Mentioned
Was this useful?
Want to tell us more? (optional)
Thanks for the note!
Something went wrong — please try again.
Too many submissions. Try again in an hour.
Ancient Amazonian forests were planted and tended by Indigenous farmers
Forests and fruits we romanticize as wild — including many plants now in our kitchens and gardens — may exist in their current abundance precisely because an...
Pontederia crassipes, commonly known as common water hyacinth, is an aquatic plant native to South America, naturalized throughout the world, and often invasive outside its native range. It is the sole species of the subgenus Oshunae within the genus Pontederia. Anecdotally, it is known as the "t...