This study aimed to obtain the relative formula with the unit treatment cost according to the treatment of a sewage plant in the service area under highway. The following results were obtained.
The correlative formula between an annual amount of sale...
This study aimed to obtain the relative formula with the unit treatment cost according to the treatment of a sewage plant in the service area under highway. The following results were obtained.
The correlative formula between an annual amount of sale and sewage showed S=19.113·C^0.9294. Extended Aeration Process showed the most generative amount 12.72㎥and Contact Oxidation process the least generative amount 10.28㎥ per one million won.
The correlative formula between the number of persons and sewage showed Q=2×10^-8·P^2 - 0.0298·P+75,666. Natural Oxidation Process and Activate Sludge Process were the most amount 0.10㎥/person, and Extended Aeration Process was the least amount 0.05㎥/person.
The treatment cost was as follows : management cost was 60%, electrical cost 22.7%, sludge treatment cost 15.5%, and the cost of water examination 1.8%.
The correlative formula of the treatment cost according to the sewage showed S= 3×10^-6·Q^2-0.2266·Q+29,895. Natural Oxidation process was the highest 1,664won/㎥ and Contact Oxidation Process cost the lowest 410won/㎥.
The correlative formula according to the removal of BOD showed S=6×10^-5·E^2 - 0.6717·E + 27,744. Natural Oxidation Process was the highest 6,984won/removal BODkg and Contact Oxidation Process was the lowest 1,793won/removal BODkg.
The correlative formu1a of the treatment cost acceding to the annual amount of sale showed S=0.0005·C^2 - 4.8013·C + 35,118. Natural Oxidation Process was the most 17,327won/one million won and contact Oxidation Process the lowest 3,986won/one million won.
The correlative formula of the treatment cost with the number of persons using the service area showed S= 2×10-8·P^2 - 0.046·P + 48,803. Activated Sludge Process was the highest 76.2won/ person and Contact Oxidant Process was the lowest 21.0won/person.