Biological Purification of Chemically Pre-Treated Dairy Wastewater Before Discharge into a Municipal Sewage Systems
  • Metaadatok
Tartalom: http://mkweb.uni-pannon.hu/hjic/index.php/hjic/article/vi...
Archívum: MTA Könyvtár
Gyűjtemény: Status = Published



Type = Article
Cím:
Biological Purification of Chemically Pre-Treated Dairy Wastewater Before Discharge into a Municipal Sewage Systems
Létrehozó:
Gulyás, Gábor
Fazekas, Bence
Varga, Regina
Kárpáti, Árpád
Dátum:
2015
Téma:
QD Chemistry / kémia
QH301 Biology / biológia
TD Environmental technology. Sanitary engineering / környezetvédelem, hulladékkezelés, egészségügyi mérnöki technika (ivóvízellátási és szennyvízkezelési technika)
Tartalmi leírás:
Dairy production is one of the most inefficient processes with respect to
water usage in the food industry. It was estimated that the production of a
litre of milk creates three to four litres of wastewater. Dairy wastewater
contains a high amount of dissolved and suspended solids. Moreover, it
contains high concentrations of fat, protein, and carbohydrate.
Consequently, the dairy wastewater content of organic compounds is high
and so is its chemical oxygen demand. The majority of organic compounds
are biodegradable with a high biological and chemical oxygen demand
ratio. In this work, we examined the biological purification of physico-
chemically pretreated wastewater from a Hungarian milk-processing
factory before it was discharged into the public sewage system. The
chemical oxygen demand of the pre-treated wastewater ranged from 500
to 2500 mg dm-3. We found that it was possible to achieve efficient
organic material removal from nutrient-poor wastewater without nutrient
dosage contrary to the literature. The activated sludge system manifested
efficient organic material removal that required a smaller biological volume.
Experiments with biofilms have shown that a thicker biofilm needs more
dissolved oxygen, which dictates oxygen input levels to be sufficient for
creating an aerobic environment.
Típus:
Article
PeerReviewed
Formátum:
text
Azonosító:
Gulyás, Gábor and Fazekas, Bence and Varga, Regina and Kárpáti, Árpád (2015) Biological Purification of Chemically Pre-Treated Dairy Wastewater Before Discharge into a Municipal Sewage Systems. HUNGARIAN JOURNAL OF INDUSTRY AND CHEMISTRY, 43 (1). pp. 45-48. ISSN 0133-0276
Kapcsolat: