Session 25 - Wastewater treatment

[CEST2019_00903] An Integrated Approach For The Assessment Of Constructed Wetlands Operational Efficiency, Using Both Chemical And Biological Data.
by Dailianis S., Charalambous N., Foiniris S., Komodromou A., Cocilovo C., Dormousoglou M., Lyberatos G., Ntaikou I.

The present study evaluated the operational efficiency of a constructed wetland (CW) located at Andritsaina/Krestena municipality (Western Greece, Peloponnese, Greece), using a battery of tests and bioassays. Specifically, raw WWs entering the CW basins with broadleaf cattail Typha latifolia (raw-WWs) and biologically treated WWs effluents ending up in the adjustment tank were randomly collected in October, December 2018, and January 2019.

Session: 25, Room: A, at Fri, 09/06/2019 - 12:51 to 12:54
Flash presentation in Wastewater treatment
[CEST2019_00810] Isolation and identification of microorganisms that can biodegrade organic compounds which are present in olive mill waste.
by Antwnopoulou P., Vyrides I., Stasinakhs A.

Isolation of microorganisms that can biodegrade organic compounds which are present in olive mill waste and more specifically microorganisms that can survive at high phenol concentrations was studied in the Environmental Engineering Laboratory for three months in the Department of Environmental Science and Technology in the Cyprus University of Technology.

Session: 25, Room: A, at Fri, 09/06/2019 - 12:48 to 12:51
Flash presentation in Wastewater treatment
[CEST2019_00800] An Investigation into Impact of Heavy Metals in Soil
by Karkain R., El Sergany M., Diamadapoulos E., Moussa M.

The aim of this paper is to assess the environmental risks associated with the wastewater reuse with respect to six metals; cadmium (Cd), chromium (Cr), copper (Cu), nickel (Ni), lead (Pb) and zinc (Zn) in the city of Dubai. Treated Sewage Effluent (TSE) is used for landscape irrigation. Samples of soil and control soil as baseline measurement were collected to calculate the contamination factor (CF), pollution load index (PLI), metal pollution index (MPI), degree of contamination (CD) and modified degree of contamination (mCD) of heavy metals in soil.

Session: 25, Room: A, at Fri, 09/06/2019 - 12:30 to 12:45
Oral presentation in Wastewater treatment
[CEST2019_00598] Start-up of the Nitrogen Removal Process in an Anaerobic Up-Flow Reactor Inoculated with Aeration Tank Sludge
by Wijaya I.M.W., Ribeiro H., Soedjono E.S., Slamet A., Teixeira C., Bordalo A.A.

Anaerobic ammonium oxidation (anammox) has been considered a promising alternative to the traditional nitrification/denitrification process to remove nitrogen without using external carbon source. The start-up of the anammox process was performed in a stirred anaerobic up-flow reactor seeded with aeration tank sludge, and fed with medium containing ammonium and nitrite (1:1). The reactor was running consecutively for 369 days, with an initial instability period that lasted 117 days, resulting in nitrite removal and nitrate accumulation.

Session: 25, Room: A, at Fri, 09/06/2019 - 12:45 to 12:48
Flash presentation in Wastewater treatment
[CEST2019_00585] Anaerobic ammonium nitrogen oxidation and sulfate reduction in psychrophilic conditions
by Przywara L.

Investigations of simultaneous removal of ammonium and sulphate were carried out in anaerobic laboratory bioreactor - upflow anaerobic filter (UAF). The process was operated in psychrophilic conditions. Temperature was maintained constant at 20±2°C. Synthetic wastewater containing ammonium chlorine and sulphate magnesium was used as the feed for the bioreactor in experiment. The concentration range of ammonium and sulphate in the wastewater were kept at 22-27 mgNH4-N/L and 80–130 mg SO4-S/L, respectively.

Session: 25, Room: A, at Fri, 09/06/2019 - 13:00 to 13:03
Flash presentation in Wastewater treatment
[CEST2019_00591] UN(K)NOWN Project: Development of Anammox Microbial Inocula to Improve Nitrogen Removal Efficiency in Wastewater Treatment
by Ribeiro H., Soares-Santos V., Machado A., Costa-Dias S., Wıjaya I M.W., Salgado P., Bordalo A.A., Teixeira C.

The discovery of anaerobic ammonium oxidation (anammox) revealed the existence of a shortcut in the classic nitrogen cycle where ammonium is converted directly to dinitrogen gas. The anammox process can be used to develop more cost and energy-efficient sustainable nitrogen removal systems comparing to those existing today. However, large-scale applications are limited due to the slow growth rate of anammox bacteria described so far.

Session: 25, Room: A, at Fri, 09/06/2019 - 13:03 to 13:06
Flash presentation in Wastewater treatment
[CEST2019_00552] Coal fly ash zeolites as adsorbents for effective removal of heavy metals and dyes from contaminated waters
by Zgureva D., Boycheva S., Behunová D., Václavíková M.

In this study, fly ash zeolites (FAZ) of Na-X type were synthesized by alkaline atmospheric aging. FAZ with a specific surface value of 280 m2/g was tested for removal of contaminants from waters in comparison to unconverted FA. The adsorption efficiency of FAZ toward methylene blue from water solutions is over 60 % for the studied concentration levels. The removal efficiency of FAZ toward Cd2+-ions reaches 98 % and it is not affected by the pH from 3.0 to 7.0. The obtained results reveal that FAZ are suitable adsorbents in water remediation systems.

Session: 25, Room: A, at Fri, 09/06/2019 - 12:00 to 12:15
Oral presentation in Wastewater treatment
[CEST2019_00488] Influence of microbial fuel cell integration on organic matter and nutrient removal in a vertical constructed wetland for wastewater treatment
by Thais G., Juan Pablo M., Vidal G.

The combination of constructed wetlands (CWs) and microbial fuel cells (MFCs) has emerged in recent years with the purpose of enhancing wastewater treatment efficiency of CWs while simultaneously generating electricity. Taking the above into account, the aim of this study is to evaluate the influence of MFC integration on organic matter and nutrient removal in a constructed wetland. The results showed that NH4+-N concentration reduced from 66.5 ±9.4 at day 0 (influent) to 4.5±0.4 mg/L and 7.03±3.93mg/L for the integrated system and control system, respectively.

Session: 25, Room: A, at Fri, 09/06/2019 - 13:06 to 13:09
Flash presentation in Wastewater treatment
[CEST2019_00426] Feasibility of combined anaerobic-aerobic system for textile wastewater contained C. I. Acid Red 88 dye treatment: HRT effects and functional resilience
by Gadow S.I., Li Y.-Y.

An integrated continuous anaerobic–aerobic system has been employed as the treatment for synthetic textile wastewater contained C. I. Acid Red 88 dye. A laboratory scale of upflow anaerobic sludge bed (UASB) flowed by activated treatment was operated at hydraulic residence time (HRT) of 24, 12, 6, and 3 h. the system showed high performance on the removal of color and COD within the HRT ranged between 24 and 6 hrs. At different organic loading rates (OLR), the chemical oxygen demand (COD) removal in the UASB was reached to 86.6% and up to 97% were obtained in the aerobic reactor.

Session: 25, Room: A, at Fri, 09/06/2019 - 12:15 to 12:30
Oral presentation in Wastewater treatment
[CEST2019_00262] Electrodialysis in zero liquid discharge systems for sustainable brine management
by Jiříček T., Havelka J., Doleček P., Cakl J., Kroupa J., Křivčík J.

According to the latest environmental requirements, zero liquid discharge must be considered in all modern manufacturing processes. In principle, solid waste can be achieved only by evaporation plus crystallization, and therefore reverse osmosis is usually applied to decrease the operation expenses by pre-concentrating the evaporator feed.

Session: 25, Room: A, at Fri, 09/06/2019 - 12:54 to 12:57
Flash presentation in Wastewater treatment
[CEST2019_00294] Pretreatment of antibiotics-contaminated waste biological sludge by ozonation
by Bosevski I., Kalčikova G., Derco J., Žgajnar Gotvajn A.

Ozonation was studied as a pretreatment method for a waste biological sludge, contaminated with large amounts of globally used antibiotics; tiamulin, levofloxacin and amoxicillin. At the concentrations of over 100 mg L-1, these antibiotics were found to inhibit biogas production (up to 50%), which means, that the molecules would pass the anaerobic digestion system unchanged.

Session: 25, Room: A, at Fri, 09/06/2019 - 12:57 to 13:00
Flash presentation in Wastewater treatment