CHARACTERIZATION AND ANAEROBIC TREATMENT OF BIOLOGICAL AND PHYSICOCHEMICAL SLUDGE FROM A MOROCCAN DAIRY INDUSTRY
Journal Title: Journal of Water and Environmental Sciences - Year 2017, Vol 1, Issue 1
Abstract
The physicochemical and biological sludge (PCS and BS) from a Moroccan dairy industry, constitute a source of organic matter that is ranging respectively between 58.67 to 90.6% and 18.85 to 92.5%. The composition of these sludges is very specific because they are derived from an effluent mixture (milk, orange, whey, …) witch varied according to production of this industry. As results, the physicochemical and microbiological characteristics of these sludges fluctuate according to time. The pH of biological sludge varied between 7.35 to 8.85 while the pH of physicochemical sludge fluctuated between 5.32 to 7.5. In addition the microbial germs is represented by total coliforms (3.95.107 and 2.02.1011UFC.ml-1), total germs (1.61.109 and 2.36.1012 UFC.ml-1), sulphate-reducing bacteria (1.55.108 and 5.72.109 UFC.ml-1), lactobacillus (2.15.108 and 9.37.1011 UFC.ml-1) and streptococcus (1.05.109 and 2.46.1011UFC.ml-1) (respectively for BS and PCS). Assessment of anaerobic digestion for treating these wastes in batch reactor at mesophilic condition (38°C) show the promising results in terms of methane production and organic pollution removal. Indeed, the methane yields were 5.601 and 20.79 mlSTP.gVS-1 gave respectively by BS and PCS for the maximal load (100% of substrate) which is the optimal load. The total solid and volatile solid reduction reached 79.63 and 83.60% for biological sludge while it reached 87.06% and 89.16% for physicochemical sludge for the same load (100% of sludge).
Authors and Affiliations
Saaida LHANAFI, Mohamed ABBAZ, Rachid ELHAOUTI, Youness AZOUGARH, Said ETTALEB, Rabih ABA-AAKI, Bouchera CHEBLI, Hassan ELBARI, Noureddine ELALEM
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SUIVI TEMPOREL DE LA VARIATION DU NIVEAU D’EAU DU LAC TSIMANAMPETSOTSA A PARTIR DES DONNEES D’ALTIMETRIE LIDAR DU SATELLITE ICESAT / TEMPORAL MONITORING OF WATER LEVEL VARIATION IN TSIMANAMPETSOTSA LAKE FROM LIDAR ALTIMETRY DATA FROM THE ICESAT SATELLITE
During its operating period, the ICESat lidar satellite collected data on the surface of the earth between 80 ° and -80 ° latitude. It allowed us to have several points of altimetry measurements on Lake Tsimanampetsotsa...
EVOLUTION DES PARAMETRES ZOOTECHNIQUES DE LA CARPE ARGENTEE (HYPOPHTHALMICHTHYS MOLITRIX) ELEVEE SOUS CLIMAT SEMI-ARIDE A LA STATION DE PISCICULTURE DEROUA, MAROC. EVOLUTION OF ZOOTECHNICAL PARAMETERS OF SILVER CARP (HYPOPHTHALMICHTHYS MOLITRIX) REARED IN SEMI-ARID CLIMATE (DEROUA FISH FARM, MOROCCO).
The growth rate of Silver carp (Hypophthalmichthys molitrix) artificially reproduced in the Deroua Fisheries Station (Morocco) since 1990 varies according to the temperature (seasons) and rearing modes (monoculture or po...
CHARACTERIZATION AND ANAEROBIC TREATMENT OF BIOLOGICAL AND PHYSICOCHEMICAL SLUDGE FROM A MOROCCAN DAIRY INDUSTRY
The physicochemical and biological sludge (PCS and BS) from a Moroccan dairy industry, constitute a source of organic matter that is ranging respectively between 58.67 to 90.6% and 18.85 to 92.5%. The composition of thes...
IMPACT DU PHENOMENE DU VIEILLISSEMENT IN VIVO DES OVULES DE LA CARPE ARGENTÉE (HYPOPHTHALMICHTHYS MOLITRIX) SUR LA PRODUCTION DES SEMENCES À LA STATION DE PISCICULTURE DE DEROUA (PROVINCE FKIH BEN SALAH, MAROC). IMPACT OF SILVER CARP (HYPOPHTHALMICHTHYS MOLITRIX) OVA POST-OVULATORY AGEING PHENOMENON ON SEED PRODUCTION (DEROUA FISH FARM, FKIH BEN SALAH, MOROCCO).
The aim of our study is to evaluate the impact of ova retention in the body cavity of silver carp (Hypophthalmichthys molitrix) females after ovulation on their viability after stripping and on different development stag...