Abstract
This paper presents about the dynamic modeling of the Water Lettuce ponds as a form of improvement from the Water Hyacinth ponds. The purpose of this paper is to predict nitrogen decrease and nitrogen transformation in Water Lettuce ponds integrated with Waste Stabilization Ponds. The model consists of 4 mass balances, namely Dissolved Organic Nitrogen (DON), Particulate Organic Nitrogen (PON), ammonium (NH4+), Nitrate and Nitrite (NOx). The process of nitrogen transformation which considered in a Water Lettuce ponds, namely hydrolysis, mineralization, nitrification, denitrification, plant and bacterial uptake processes. Numerical simulations are performed by giving the values of parameters and the initial values of nitrogen compounds based on a review of previous studies. Numerical results show that the rate of change in the concentration of nitrogen compounds in the integration ponds of waste stabilization and water lettuce decreases and reaches stable at different times.
Highlights
Waters is one environment that has an important function for human life
Research on the transformation and decrease of nitrogen compounds has previously been widely, one of them is by using water hyacinth pond which is integrated with waste stabilization pond
This article provides a dynamic model that can be used to simulate the operation of a water lettuce pool. This model can be used to predict nitrogen decrease as well as nitrogen transformation processes in water lettuce pools integrated with waste stabilization ponds
Summary
Waters is one environment that has an important function for human life. But the supply of source life is increasingly limited and increasingly polluted by human activities. One of the most widely used biological treatment processes is a waste stabilization pond system This is due to the low cost and simplicity of construction, operation, and maintenance [5]. The main problem facing the operation of this pool is the minimal reduction in the amount of excessive nitrogen compounds in waste caused by algae activity especially during the summer. Research on the transformation and decrease of nitrogen compounds has previously been widely, one of them is by using water hyacinth pond which is integrated with waste stabilization pond. This article provides a dynamic model that can be used to simulate the operation of a water lettuce pool This model can be used to predict nitrogen decrease as well as nitrogen transformation processes in water lettuce pools integrated with waste stabilization ponds
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