Investigation of Filtration Capacity of Surface Wastewater Filters by Mathematical Modelling

Abstract

As the urbanisation level increases, due to intensification of car traffic and increased areas of impermeable surfaces, pollution of surface wastewater and a negative impact on water bodies are increasing. Due to the increasing pollution of surface water bodies, the eutrophication process is taking place intensively. One of the technologies of surface wastewater treatment allowing reduction in the amounts of suspended solids (SS), heavy metals and other pollutants is surface wastewater filters. Filters with different fillers have been designed for the treatment of principal surface wastewater pollutants: suspended solids, heavy metals (zinc, cadmium, copper, lead), BOD5, total carbon and nitrogen. The Kriging method was adapted to test the efficiency of filters filled with construction waste and wood waste-derived biochar using distance matrices. The method developed makes it possible to model the characteristics of filters in relation to different fillers, using experimental results. The mathematical model is suitable for other filtrate characteristics, not only the ratio of fillers, but also the length of the filter life, its durability calculations, which allows optimizing filter cleaning efficiency up to 96.93 %.

Chemometric Evaluation of WWTPs’ Wastewaters and Receiving Surface Waters in Bulgaria

“…In addition, statistical methods such as principal component analysis (PCA) are often used in the assessment of pressures and impacts from identified sources [13][14][15] and showed the apportionment of the WWTP effluents [16]. Supplementary to the studies of physical-chemical parameters, major and trace elements, utilization of ecotoxicological indicators was introduced to comprehensively assess the WWTPs' efficiencies and water quality of the effluents discharged into the surface waters' quality [14,17].…”

Selection of factors and preparation of an experiment planning matrix for modeling a filter material with an orthotropic structure based on woven meshes

“…Rational design of filtering products from FMTS provides for the establishment of a relationship between the parameters and properties of the material. It is known that the use of mathematical and statistical methods in solving various problems of scientific research can significantly reduce the duration of experiments, reduce the material costs of conducting them and increase the reliability of the results obtained [4][5][6][7][8][9][10].…”