Abstract
The article reveals researches aimed to estimate if it is possible to intensify wastewater treatment processes by means of floating feed. There was a lab-scale experiment carried out in conditions of artificial wastewater treatment. Laboratory model to perform conventional treatment process was assembled and included aeration reactor and secondary clarifier. It is stated that optimal amount of floating material inside the reactors has to be no less 10% of volume; otherwise, it may not provide positive result. However, if this amount is higher than 30% of volume it may require higher costs. Three ratios were chosen for current lab-scale experiment: 10%, 20% and 30% of reactor volume. In this viewpoint there were four laboratory models in operation with three different amount of floating material inside. The fourth model has no floating media to compare the parameters of operation. The material in use is made of polystyrene to provide its floating ability and accumulation of sludge biomass. The samples of wastewater were investigated to according to the requirements of standard methods. Model with floating material provided 95% efficiency for BOD5 removal and 83% efficiency of nitrogen removal, comparing to efficiency of 92% and 55% correspondingly in the model with no floating material.
Highlights
Strict regulation requires applied for pollutants concentration in treated wastewater requires the implementation of efficient sloutions
Investigation of samples was done according to standard instructions for the following parameters: BOD5, suspended solids (MLSS), P-PO4, N-NH4, N-NO2, N-NO3 and dissolved oxygen
Average results for BOD5, N-NH4 and P-PO4 are shown in the table 1
Summary
Strict regulation requires applied for pollutants concentration in treated wastewater requires the implementation of efficient sloutions. That means that every wastewater treatment plant may have certain possibilities for enhancement. Floating feed that may be inserted into the aeration tanks may be one of this possibilities. The research has an overall aim to assess if there is a positive impact of floating feed implementation for treatment of wastewater. The step was to go deeper into the treatment process to describe how the removal of organic pollutions and nitrogen compounds goes in conventional treatment system. The research had a slight touch over a possible economic efficiency that considered the amount of floating feed to be inserted and some operation parameters [1,2]
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