RATIONAL USE OF ENERGY ON THE WASTEWATER TREATMENT PLANT IN THE COMPANY PALOMA d.d.

Namen naloge je bil dolociti racionalno rabo vseh energentov na cistilni napravi Paloma d.d. Ob nakupu bolj kvalitetnih surovinah imamo manj odpada (rejektov) na finih grabljah. Varcevalni ukrepi s svežo tehnološko vodo v proizvodnji papirja (zapiranje krogotokov voda in krogotokov vlaken) pozitivno vplivajo tudi na varcevanje z energenti na celotni cistilni napravi. Z zmanjšanimi dotoki tehnološke odpadne vode se je obcutno znižala poraba kemikalij, ker v vodi ni prisotnih veliko papirnih vlaken se je zmanjšala kolicina flotata in s tem posledicno tudi odvozi dehidriranega tehnološkega mulja. Zaradi manjših obremenitev biološkega dela cistilne naprave imamo tudi manj odvoza biološkega mulja. V okviru projekta racionalne rabe elektricne energije, se je pokazala možnost za zamenjavo dveh puhal z enim zmogljivejšim puhalom. Meritve so pokazale, da je ekonomsko upravicena menjava puhala, saj bi se stroški nabave povrnili v 20,4 mesecih.The purpose of this research was to determine the rational use of energy at a treatment plant Paloma d.d. When you purchase better quality materials you get less waste (rejects) on fine rakes. Saving measures with fresh potable water in paper production ( closed circuit water loop and fiber) have positive effect on saving energy in the entire treatment plant. The reduced inflow of industrial waste water has substantially reduced the consumption of chemicals. Because the water does not contain a lot of paper fiber, the amount of flotat has decreased and, consequently, the removals of dehydrated sludge technology. Due to smaller strain on biological part of treatment plant we also have less biological sludge removal. Within the framework of the rational use of electiricy the opportunity arose to replace the two blowers with one more powerful blower. Measurements have shown that the replacement of blower was economically justified, as the cost of acquisition would be reimbursed in 21.5 months