http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Haijing Liang (검색결과 1 건)
- 무료
- 기관 내 무료
- 유료
-
The Effect of pH on the Efficiency of an SBR Processing Piggery Wastewater
LiLong Yan,Yu Liu,Yuan Ren,Xiaohui Wang,Haijing Liang,Ying Zhang 한국생물공학회 2013 Biotechnology and Bioprocess Engineering Vol.18 No.6
To treat piggery wastewater efficiently, thehydrolysis of urea (mainly derived from swine urine) inpiggery wastewater with the change of sewage pH must beconsidered. Using activated sludge, piggery wastewaterwas treated in a sequencing batch reactor (SBR), and theeffects of influent pH on SBR processing efficiency, sludgesettle ability, and sludge activity were investigated. Theresults showed that a high influent pH value contributed tothe improvement of the removal rate of ammonia nitrogenand reduction of the chemical oxygen demand (COD). When the influent pH was between 9.0 and 9.5, the removalrate of ammonia nitrogen was higher than 90%, and thereduction of COD from its original value was 80%. Theinfluent pH had a greater influence on sludge concentrationand sludge activity. When the influent pH increased from7.0 to 9.5, the sludge concentration increased from 2,350 to3,947 mg/L in the reactor, and the activities of ammoniumoxidizing bacteria (AOB) and nitrite oxidizing bacteria(NOB) first increased and then decreased. When theinfluent pH was 9.0 and 8.0, the maximum values (0.48 gO2/(g MLSS/day) and 0.080 g O2/(g MLSS/day)) werereached, and the sludge settling ratio was nearly steadybetween 20 and 35% in each reactor.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
