E-Locus - Institutional Repository of the University of Crete - Αερόβια βιολογική επεξεργασία υγρών αποβλήτων ελαιοτριβείου με εφαρμογή αντιδραστήρα σταθερής κλίνης

Home Αερόβια βιολογική επεξεργασία υγρών αποβλήτων ελαιοτριβείου με εφαρμογή αντιδραστήρα σταθερής κλίνης

Results - Details

[Add to Basket]

Identifier

000352187

Title

Αερόβια βιολογική επεξεργασία υγρών αποβλήτων ελαιοτριβείου με εφαρμογή αντιδραστήρα σταθερής κλίνης

Alternative Title

Aerobic biological treatment of olive mill wastewater with application of bed reactor

Author

Σκρέτας, Νικόλαος Δ.

Thesis advisor

Περγαντής, Σπύρος
Βαγενάς, Δημήτριος

Abstract

The olive mill wastes (OMW), considered as pollutants with particular importance because of their high organic charge and their high content in phenolic constituents. The problem of treatment and final disposal of these wastes is also intensified by their seasonal production with relatively high rates. Moreover, in the phenolic constituents has been attributed abundance of harmful repercussions so much in the human health and also in the environment. In the present work was studied the application of aerobic biological treatment, bed reactor (trickling filter) in the treatment of OMW. Vertical cylindrical reactor of height 3 m and diameter 1.8 m was filled with plastic material, big porosities in order to avoid obstruction. In coupling with a plastic reservoir of capacity 3 m³, the system functioned in continuous operation with recirculation for loads above 10lt/min, but also in batch operation with recirculation. The culture of micro-organisms, which are responsible for the bioremediation of organic content and phenolic constituents, emanates from the olive pulp. Critical parameters for the operation of reactor as were observed, the hydraulic retention time, the temperature and the availability of inorganic nutritious components such as nitrogen phosphor, magnesium. With regard to dissolved oxygen the way of manufacture and operation of the bioreactor, an excess of dissolved oxygen that is required for the biological activity is ensured without the addition of an apparatus that could increase the operational costs. Under optimal conditions of operation treatment of outcast volume of tens of thousands of liters per week of operation was achieved, with satisfactory output corresponding with those that are reported in the bibliography for aerobic treatment of sewages. The use of reactors of constant bed with the use recirculation constitutes a very good solution of treatment phenolic constituents as well as OMW even for a small unit of production of olive oil. Important advantage of this method constitutes the low constant and functional cost.

Language

Greek

Subject

Aerobic treatment

Olive mill

Plastic material

Reactor

Recirculation

Trickling filter

Wastewater

Ανακυκλοφορία

Αντιδραστήρας