Analiza kosztów funkcjonowania przydomowych oczyszczalni ścieków

The economics aspects of the operation of household wastewater treatment plants are discussed in the paper. Three selected individual wastewater treatment systems offered by HABA are presented, such as (1) system with drainage tunnel (HABA DT), (2) treatment plant of SBR type (HABA SBR PRIMO) and (3) constructed wetland wastewater treatment plant (HABA ORS). In the work the analytical procedures for determining the costs are presented. Next, a comparative economics analysis of these systems is carried out. The level of annual costs as well as unit costs of wastewater disposal and treatment are determined for these systems. The annual unit cost in presented small sewage treatment facilities ranged from 4.83 to 6.00 zł per m3. The calculations showed that the lowest annual cost of wastewater treatment is characterized by a system with drainage tunnel. Of the three systems included in the work of the highest costs of wastewater treatment plant generates system HABA ORS.