Aquatic plants can be utilised to treat wastewater in a manner that is not harmful to the environment. This project uses a water stabilisation pond to grow para grass (Brachiaria mutica). Para grass has leaf blades that are up to 0.3 m long and 0.16 – 0.2 m broad, and they are hairy. The growth cycle of para grass was researched for 35 days, and it was revealed that the grass grew swiftly for the first 20 days, but then blossomed and grew more slowly from day 20 to day 21. Para grass flourished equally effectively in both rainy and dry seasons for the first 12 days. However, para grass growth in the wet season is better than in the dry season over the next 12 days. 1m2 of dry grass has the maximum yield of nutrients in the 24-day cycle, with 174.6 grammes of glucose, 18.97 grammes of nitrogen, and 2.85 grammes of phosphorus. In the stabilisation pond, which is surrounded by para grass, the wastewater was treated effectively. This system can handle pollutants such as COD, total N, and total P better than 0.35 m3/h when the flow rate is reduced to 0.25 m3/h. COD, TN, and TP remove 64.3 percent, 51.8 percent, and 49.1 percent of COD, TN, and TP, respectively, at 0.25 m3/h. Following treatment, the wastewater was treated with QCVN 40: 2011/BTNMT column A (COD, TN, TP, pH) with a retention period of 5.3 days and was reusable. This study direction is appropriate for contemporary sustainable development since it presents a low-cost, environmentally friendly, simple-to-implement method that utilises plant species native to Vietnam. This is your paper's initial part.
Author(S) Details
Van Thi Thanh Ho
Hochiminh University of Natural Resources and Environment (HCMUNRE), Vietnam.
Nam Dong Hoang
VNUHCM-University of Science, Ho Chi Minh City, Vietnam.
Minh Dang Pham
Hochiminh University of Natural Resources and Environment (HCMUNRE), Vietnam.
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