Abstract
In this paper, the COD Cr index is used as the detection item, and the wastewater from the secondary clarifier of a sewage treatment plant is treated by "Fenton oxidation-neutralization-coagulation sedimentation" method. The results showed that the removal rate of COD Cr reached 73.4% by "Fenton oxidation-neutralization-coagulation precipitation" method. It can be seen that this method can make the wastewater discharge up to the standard and provide data support for better treatment of industrial wastewater in engineering. Keywords Secondary sedimentation tank; CODCr; Fenton oxidation; Up-to-standard emissions DOI : 10.7176/JEES/9-7-01 Publication date :July 31 st 2019
Highlights
The rapid economic development promotes social progress, and brings harm to the environment, which makes pollution become a major problem, among which water pollution is the most important
The secondary sedimentation tank is a key unit of sewage treatment plant, which will directly affect the effluent quality of biochemical treatment system and the concentration of reflux sludge
The supernatant was taken to detect CODCr, and the average value of each water sample was determined twice to study the effect of fenton oxidation. 2.2.3 Agitation method Fixed the dosage of 1.2 mL hydrogen peroxide and 0.5‰ FeSO4·7H2O, and investigated the effects of mechanical stirring and aeration stirring on fenton oxidation
Summary
The rapid economic development promotes social progress, and brings harm to the environment, which makes pollution become a major problem, among which water pollution is the most important. Supernatant was taken to detect CODCr. The average value of each water sample was determined twice.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
