Ketasfiltri tööparameetrite uurimine Tartu reoveepuhasti näitel
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Kuupäev
2018
Kättesaadav alates
Autorid
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Eesti Maaülikool
Abstrakt
Käesolev uurimistöö on tehtud Tartu reoveepuhasti ketasfiltrite kohta. Eesmärk on välja
selgitada ketasfiltri tööparameetrid ning hinnata nende efektiivsust heitvee järelpuhastamisel.
Töös uuriti filtrisegmentide veeläbilaskvuse muutumist ajas, läbipesu ja keemiapesu
tõhusust, filtermaterjali avasuuruse mõju heljumi vähendamisele nii omaette kui
kombinatsioonis flokulatsiooni-koagulatsioonietapi lisamisega ning kemikaalide doose.
Selgitati välja reoveepuhasti pika aja vooluhulgad ja heljumisisaldus ketasfiltritele juhitavas
heitvees ning seostati see filtrite ummistumisega. Mõõtmistulemuste põhjal tehakse
ettepanekuid ja osutatakse võimalustele reoveepuhasti töö optimeerimiseks nii, et oleks
jälgitud kuluefektiivsust ja saavutatud energiatõhusus.
This research has been carried out on disc filter of Tartu wastewater treatment plant. The objective was to find the operating parameters of the disk filter and to evaluate their efficiency in waste water after-treatment. The following sub-objectives were studied: changes in the permeability of the filter segments over time, the efficiency of backwashing and the chemical washing of filters, the effect of the filter material pore size on the reduction of suspended solids, both on its own and in combination with the flocculation-coagulation step, and the doses of chemicals. The actual flow rates of the sewage treatment plant and the amount of suspended solids in the effluent were linked to filter clogging. Based on the results of the measurements, possibilities for optimizing the wastewater treatment plant were proposed, in order to achieve the cost-effectiveness and energy efficiency.
This research has been carried out on disc filter of Tartu wastewater treatment plant. The objective was to find the operating parameters of the disk filter and to evaluate their efficiency in waste water after-treatment. The following sub-objectives were studied: changes in the permeability of the filter segments over time, the efficiency of backwashing and the chemical washing of filters, the effect of the filter material pore size on the reduction of suspended solids, both on its own and in combination with the flocculation-coagulation step, and the doses of chemicals. The actual flow rates of the sewage treatment plant and the amount of suspended solids in the effluent were linked to filter clogging. Based on the results of the measurements, possibilities for optimizing the wastewater treatment plant were proposed, in order to achieve the cost-effectiveness and energy efficiency.
Kirjeldus
Magistritöö
Vesiehituse ja veekaitse õppekaval
Märksõnad
magistritööd, reovesi, reoveepuhastid