Sustavi procesa aktivnog mulja (ASP) koriste električnu energiju za ispuhivanje zraka u sirovu, nesređenu kanalizaciju. To razbija krutine kako bi se razvila biološka 'juha'. Prozračivanje omogućuje prirodnim bakterijama u otpadu da probave bilo koji organski sadržaj, smanjujući ukupnu razinu onečišćujuće tvari. ASP postrojenja za pročišćavanje otpadnih voda nemaju primarnu komoru za naseljavanje, što znači rjeđe pražnjenje i manje neželjenih mirisa.
Once the sewage has been aerated for long enough, excess liquid is discharged into a clarification chamber, where live bacteria settle to the bottom. Dead bacteria rise to the top, leaving clean water in the middle – which can then be discharged safely into either a watercourse, drainage field or soakaway.
POTOPLJENI FILTRI ZA PROZRAČIVANJE
In a submerged aeration filter, a primary settlement chamber holds solid material. This is where anaerobic digestion by bacteria takes place. Clarified water then passes into a second chamber containing a submerged media – and here, the water is treated to remove dissolved constituents by aerobic bacteria, supported by diffused air. This process ensures that full treatment is achieved before the material flows to a final settlement chamber. The final, treated wastewater is discharged to the drainage field, watercourse or soakaway.