Source Jouranl of CSCD
Source Journal of Chinese Scientific and Technical Papers
Included as T2 Level in the High-Quality Science and Technology Journals in the Field of Environmental Science
Core Journal of RCCSE
Included in the CAS Content Collection
Included in the JST China
Indexed in World Journal Clout Index (WJCI) Report
LI Zhili, WANG Haitao, HUO Hanxin, ZHAO Jin, ZHANG Yizhong, WANG Xunliang, GUO Jian, JIANG Tianxiang, MA Yuhui. MAGNETIC BIOCHAR AEROGEL FROM WASTE CORRUGATED PAPER FOR ADSORPTION OF METHYLENE BLUE FROM WATER: PREPAREATRION AND PERFORMANCE[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(12): 210-217. doi: 10.13205/j.hjgc.202412025
Citation: Chen Yasong, Zhang Chao, Chen Zhenguo, Dong Wenjie, Xu Bingxin. EARLY WARNING OF ACTIVATED SLUDGE INHIBITORY ACTION BY HEAVY METALS BASED ON OXYGEN UPTAKE RATE INDEX[J]. ENVIRONMENTAL ENGINEERING , 2015, 33(2): 27-31. doi: 10.13205/j.hjgc.201502006

EARLY WARNING OF ACTIVATED SLUDGE INHIBITORY ACTION BY HEAVY METALS BASED ON OXYGEN UPTAKE RATE INDEX

doi: 10.13205/j.hjgc.201502006
  • Publish Date: 2015-02-22
  • The early warning of activated sludge inhibitory rate by Cu2 + ,Zn2 + was studied based on oxygen uptake rate ( OUR) index. When dosage of Cu2 + and Zn2 + increased from 20 mg /L to 60 mg /L, the OUR inhibitory rate increased from 33% and 38% up to 77% and 63%,respectively. With a rising of dosage of heavy metals,the activated sludge's inhibitory rate measured by OUR index was enhanced. With a certain condition and common dosage of heavy metals ( 20 mg /L) ,the OUR inhibitory rate order by four heavy metals was Cu2 + > Zn2 + > Cd2 + > Cr3 + . The operation parameters for early warning reactor were optimized by single factor and orthogonal test,the results indicated that the best parameters were as follows: ρ( MLSS) = 500 mg /L,HRT = 10 min. The early warning equipment was applied to simulate sewage added in Cu2 + and Zn2 + respectively,which indicated that the OUR inhibitory rate was 22. 3% and 56. 6%,with common dosage of heavy metals ( 5 mg /L) . Thus,the early warning equipment based on oxygen uptake rate ( OUR) index can be applied to early warning of the activated sludge inhibitory action by heavy metals in wastewater treatment plant.
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