The latest news shows that the joint project between the University of Bath in Bath and the Wessex utility water utility is testing the algae ponds for phosphorus removal. It is reported that the experiment with high-efficiency seaweed pool system as a pilot to contaminants in wastewater as nutrients, the use of seaweed to be absorbed and transformed before the wastewater discharge and then recycle. Experimental results show that this method can remove more than 80% of phosphorus while removing nutrients.
Algae pools are used to remove nutrients and treat waste water at the University of Bath in the United Kingdom and the Wessex Utility Water Utility. The project's main investigation into wastewater treatment and phosphorus reduction using algae ponds is not only a growing concern for British water companies, but is also forced by WFD's environmental agency to find new solutions.
The purpose of this experiment is to use "managed eutrophication" approach. Let the wastewater release nutrients to promote the growth of algae in the river, and then remove the algae before the wastewater flows into the river. Treated wastewater can be discharged into the river, seaweed can be recycled for reuse.
To this end, an efficient seaweed pool system was installed as a pilot at the Wilkes Sewage Treatment Plant in Bayington. Nearly 3,000 liters of wastewater are treated daily, while 80-96% of the phosphorus is removed. The system consists of two shallow ponds measuring approximately 60 square meters and a volume of 18,000 liters. The sewage flows continuously with the slurry.
Efficient algae pond system will cultivate the ideal algae seed to wastewater pollutants for nutrition, or pollutants will be discharged into the environment. In each catchment, seaweed absorbs nutrients from the waste water, plus sunlight and carbon dioxide to promote its growth, thus reducing the amount of organic matter, including phosphorus, in the wastewater. A portion of the mixture of wastewater and seaweed is transferred to the sedimentation tank and separated daily, with the fresh effluent again filled with water. Treated wastewater contains small amounts of pollutants that can be released into the environment, and nutrient-rich seaweeds are reused for various purposes, such as bioplastics, biofuels and agricultural fertilizers.
The team is led by Dr. Tom Arnott, PhD, Department of Chemical Engineering and Professor Rod Scott, a professor of biological and biochemistry. Dimitrios, an assistant researcher at the Department of Biology and Chemistry at the University of Bath and a test contender at the Baquingum University, said that in theory the system can provide a good environment and a sustainable way to remove phosphorus from wastewater without spending more The water fee can improve the water environment of rivers and lakes. In this experiment, they want to establish how the technology behaves under realistic conditions, while explaining and responding to any challenge that may arise during the experiment.
The project is funded by the British Water Institute. Finally, the research team intends to make the HRAPs system a viable and cost-effective way to remove phosphorus to a lower concentration, thus benefiting water utilities and consumers.
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