Sludge transporting pipes in wastewater treatment plant are easy to be clogged with struvite when the digested sludge and dehydrated filtrate are transported through the pipes, which lowers the efficiency of sludge treatment system in a WWTP. pH is one of the most important factors in struvite formation, and carbon dioxide separated from biogas can be used to control pH and struvite formation. By controlling pH, the amount of dehydrating agent can be reduced by about 10%, which saves the budget for facility maintenance. As CO2 is reused and dehydrating chemicals are saved, the approach can contribute to global warming gas reduction.

ABSTRACT
 1. 서 론
 2. 실험 대상 및 방법
 3. 결과 및 고찰
  3.1 스트러바이트 생성에 대한 pH 제어 실험 결과
  3.2 이산화탄소를 활용한 스트러바이트 생성 억제 실험 결과
  3.3 이산화탄소 주입에 따른 탈수시 탈수약품 주입률 변화실험 결과
  3.4 현장 적용가능한 스트러바이트 생성 제어 시스템 제안
 4. 결 론
 References

• 한금석(서울물연구원, 숭실대학교 화학공학과) | Keumseok Han Corresponding author
• 홍성호(숭실대학교 화학공학과) | Seongho Hong
• 최영준(서울물연구원) | Youngjune Choi