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Contribution of Coagulation-Flocculation Process for a More Sustainable Pig Slurry Management.
- Source :
- Water, Air & Soil Pollution; May2015, Vol. 226 Issue 5, p1-6, 6p
- Publication Year :
- 2015
-
Abstract
- This paper aims to demonstrate the benefits of using a natural coagulant to enhance gravitational sedimentation of pig slurry. The separation process would lead to a liquid fraction, more biodegradable and with lower nutrient content, and a solid fraction highly concentrated in organic matter. Experimental trials were conducted in order to achieve the following objectives: (i) compare the effect of gravitational sedimentation with coagulation-flocculation process, (ii) compare the efficiency of conventional coagulants (such as aluminium sulphate or ferric chloride) with chitosan biopolymer and (iii) test the optimum coagulation-flocculation operational conditions to slurry sample. Assessment criteria included removal efficiencies but also took into consideration the advantages/disadvantages regarding sludge management. Results showed that gravitational sedimentation process can be improved by addition of coagulants; turbidity and COD removal increased around 2 and 3 times, respectively. [ABSTRACT FROM AUTHOR]
- Subjects :
- COAGULATION
CLUSTERING of particles
FLOCCULATION
ALUMINUM
CHITOSAN
CHITIN
Subjects
Details
- Language :
- English
- ISSN :
- 00496979
- Volume :
- 226
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- Water, Air & Soil Pollution
- Publication Type :
- Academic Journal
- Accession number :
- 122850073
- Full Text :
- https://doi.org/10.1007/s11270-015-2388-4