EVALUATION OF DOMESTIC WASTEWATER TREATMENT CAPACITY OF THE OXIDATION DITCH SYSTEM AT GIA SANG WASTEWATER TREATMENT PLANT, THAI NGUYEN CITY, THAI NGUYEN PROVINCE
DOI:
https://doi.org/10.51453/2354-1431/2024/1244Keywords:
Domestic wastewater treatment; Oxidation ditch ; Aerobic biological treatment; Anoxic biological treatmentAbstract
Through research and evaluation, we have some conclusions as follows: 1.The operation of the Oxidation ditch system in the first and second months is not really stable. Ammonium parameters (NH4+) in wastewater after treatment are very high at 19.13 to 19.42 mg/l, not meeting QCVN 14/2008 BTNMT. The parameters pH, BOD, TSS, TDS, Phosphorus, total coliform, etc. in treated wastewater all meet allowed standards. 2. After adjusting a number of operating parameters, the operation of the Oxidation ditch system in the months of March, April, May, June is quite stable, good treatment, all parameters to evaluate the quality of wastewater after treatment such as NH4+, NO3-, pH, BOD, TSS, PO43-, total Coliform all meet QCVN 14/2008 BTNMT. 3. The organic matter treatment efficiency of the Oxidation ditch system in the first six months of the year reached 83-100%. In January and February, the ammonium treatment efficiency is low, only reaching 39.6 to 41.9%, and in months March, April, May, and June, the efficiency is high from 90 to 100%.
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