THE EXISTENCE OF POSITIVE SOLUTIONS FOR THREE-POINT BOUNDARY VALUE PROBLEMS OF FRACTIONAL DIFFERENTIAL EQUATIONS
Published In: INTERNATIONAL CONFERENCE ON ADVANCES IN APPLIED SCIENCE AND ENVIRONMENTAL ENGINEERING
Author(s): LIZHENG XUE , DONG PAN , JIUSHUAN ZHANG , LI ZOU
Abstract: In this paper, we investigate the existence of solutions for a class of three-point boundary value problems of fractional differential equations. By using Lebegesgue dominated convergence theorem and schauder fixed point theorem, a sufficient condition of the existence solution is obtained
- Publication Date: 03-Aug-2014
- DOI: 10.15224/978-1-63248-004-0-08
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ADVANCED CHEMICAL OXIDATION WITH PRE-COAGULATION FOR TREATMENT OF PAINT MANUFACTURING WASTEWATER
Published In: INTERNATIONAL CONFERENCE ON ADVANCES IN APPLIED SCIENCE AND ENVIRONMENTAL ENGINEERING
Author(s): DENISS KLAUSON , ENELIIS KATTEL , MARIKA VIISIMAA , MARINA TRAPIDO , NIINA DULOVA
Abstract: A water-based paint wastewater, generated mainly during a periodic equipment-cleaning, was subjected to the combined pre-coagulation and advanced chemical treatment (H2O2/Fe2+, S2O82-/Fe2+, S2O82-/OH-, or S2O82-/H2O2 system). The results of ferric pre-coagulation trials indicated a high efficacy in wastewater treatment, resulted in 4 and 15 % residual COD and DOC, respectively, and in more than a 10-fold increase in a BOD7/COD ratio. The Fenton treatment of the pre-coagulated wastewater at the optimal COD/H2O2/Fe2+ weight ratio of 1:2:0.4 resulted in respective 14 and 31 % residual COD and DOC. The BOD7/COD ratio increase was the highest at the optimal ratio and resulted in more than 6-fold and 81-fold increase compared to the pre-coagulated and initial wastewater, respectively. The COD and DOC removal remained nearly identical in all trials with the ferrous-ions activated persulfate treatment of the pre-coagulated wastewater and did not exceed 35 and 7 %, respectively. The BOD7/COD re
- Publication Date: 03-Aug-2014
- DOI: 10.15224/978-1-63248-004-0-09
- Views: 0
- Downloads: 0