Technical and Technological Analysis of Individual Wastewater Treatment Systems

Abstract

Abs tra ctThe article characterises most frequently selected by investors individual mechanical and biological sewage treatment systems. On the basis of gathered information and technical documentation, technical and technological analysis of the devices was conducted. Assess factors include technology, structure, workflow, control, exploitation conditions, and sewage treatment system effectiveness. On the basis of conducted analysis, limited possibility of using activated sludge wastewater treatment in a flow system was established due to the difficulty of stabilizing the whole system. An optimal solution for individual wastewater treatment system are solutions of activated sludge technology in SBR system and hybrid technologies.does not have access to a sewage system. Situation in the city stands decidedly better, with only 10% of inhabitants not using sewage system [3,7,13]. Habitants of non-canalised areas use onsite sewage collection systems: holding tanks and onsite wastewater treatment systems. 2 333 thousands of the devices functioned in Poland in 2016, ca. 91% of which were holding tanks. For the last few years, a systematic decrease of holding tanks number has been noted, with simultaneous increase of onsite wastewater treatment systems number. Number of holding tanks decreased from about 2 136 thousands in 2015 to 2 117 thousands in 2016 (by 0.9%), while number of onsite wastewater treatment systems increased from about 203 thousands in 2015 to about 217 thousands in 2016 [3]. Amount of wastewater production in the country will be increasing due to easier access to water systems, building of new houses, and higher standard of resident buildings equipment. Thus, investing in individual wastewater treatment systems in areas of scattered housing, where common sewage systems are most frequently absent, becomes necessary [1,4,5,6]. In the last few years, onsite sewage collection systems have been gaining more and more popularity. It is connected primarily to decidedly lower cost of system purchase and relatively low exploitation costs. The basis of onsite wastewater treatment system selection should be not only the economic criterium, but also technological and environmental aspects. The best solutions should be technologically effective, environmentally friendly, and acceptable in economic and exploitative aspects [4,5,8,10].

Towards Energy Efficient Onsite Wastewater Treatment

“…Despite the high variety of packaged WWTPs on the market, most of them use aerobic biodegradation processes, in which air blowers supply the required oxygen using energy. Depending on the producer, the working mode of air blowers might be different in level of complexitysimple, based on time switch, or more complicated automation based on sensors for the dissolved oxygen in the bioreactor [8]. The first working mode results in high energy consumption since equal oxygen is provided irrespective of the pollution load, i.e.…”

Performance of Sewage Treatment Technologies for the Removal of Cryptosporidium Sp. And Giardia Sp.: Toward Water Circularity

“…Secondary technologies or biological systems for sewage treatment are based on the transformation of organic matter through biological processes (Jakubaszek and Stadnik, 2018). Although the objective of these technologies is not the removal of microorganisms, they have been shown to affect the removal of Cryptosporidium sp.…”

Nitrogen and Phosphorus Content in Constructed Wetlands

“…Constructed wetland systems are a representation of processes taking place in swamp ecosystems [5]. Habitat of water-liking plants is waterlogged grounds, characterised by hard existence conditions, mainly environments poor in oxygen [4].…”