In wastewater treatment nitrogen removal is a constant topic. In this paper we have detailed discussed how inner sources of nitrogen in a WWTP can be reduced. Inner sources are coming from sludge treatment and can represent up to 50% of all nitrogen load to a WWTP. With use of intensive aerobic processes utilizing oxygen and air we have established the kinetics of ammonia to nitrate transfer. Utilizing optimum conditions WWTP nitrogen load can be reduced by 40%.
COBISS.SI-ID: 3642394
We have developed a new process for excess sludge treatment suitable for small WWTP’s of up to 10000 PE. Process is batch in nature and is composed of several phases. Sludge is autothermally heated to 60°C and simultaneously hygenized and stabilized. It is possible to add a nitrification phase to the process to reduce ammonia content in the sludge supernatant. Process was successfully tested in a pilot scale plant of 150 PE in size.
COBISS.SI-ID: 4033050