Wastewater treatment

[CEST2019_00938] Performance evaluation of a flat sheet self-forming dynamic membrane (SFDM) for municipal wastewater treatment containing organic micropollutants
by Millanar-Marfa J.M.J., Borea L., Castrogiovanni F., Napodano P., Hasan S.W., De Luna M.D.G., Belgiorno V., Naddeo V.

Membrane bioreactors gained increasing interest due to its small footprint and high efficiency. Nonetheless, high capital and operational cost of MBR remains a challenge. With the aim to reduce MBR cost, this study used Dacron mesh to form a dynamic membrane that serves as a substitute to conventional membranes to treat municipal wastewater containing organic micropollutants (OMPs). The SFDM system obtained COD, NH4-N and PO4-P removal of 95%, 47% and 14%, respectively.

Session: 19, Room: A, at Fri, 09/06/2019 - 10:00 to 10:15
Oral presentation in Wastewater treatment
[CEST2019_00937] Novel Polyethersulfone (PES) Alpha-Zirconium Phosphate (α-ZrP) Ion Exchange Mixed Matrix Membranes for Effective Removal of Heavy Metals from Wastewater
by Abdulkarim E., Ibrahim Y., Hasan S., Naddeo V., Banat F.

In this study, novel polyethersulfone (PES) alpha-zirconium (α-ZrP) ion exchange mixed matrix membranes were fabricated via phase inversion method using nano-sized alpha-zirconium phosphate (α-ZrP-n) and polyvinylpyrrolidone (PVP) as dispersant nano-additives in the dope solution preparation. The impact of α-ZrP-n loading on the removal of Cu(II), Zn(II), and Ni(II) from wastewater effluent was studied by varying the α-ZrP-n concentrations from 0.1 up to 1 wt.% while fixing the PES concentration at 10 wt.%.

Session: 19, Room: A, at Fri, 09/06/2019 - 09:45 to 10:00
Oral presentation in 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_00904] Systems Improvement And Energy Savings Program For The Existing Conventional Extended Aerobic Treatment Of Domestic Wastewater In Compliance Of DAO 2016-08 New General Effluent Regulations
by Maceda Ma., Cleofas O.

This is a system improvement and energy savings program for a Sewage Treatment Plant treating wastewater coming from a shopping mall operation. Wastewater from shopping mall is considered domestic wastewater, which needs a big volume of water, and produced big amount of wastewater.

Session: 19, Room: A, at Fri, 09/06/2019 - 09:30 to 09:45
Oral 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_00806] Treatment of High Strength Industrial Wastewater utilizing Canna X generalis in a Simulated Vertical Flow Constructed Wetland Set-up
by Heidi A., Ballesteros F., Esguerra G.

In the Philippines, DENR has mandated the regulation of oil and grease, COD, and TSS for automotive parts manufacturers. Wastewaters from industries have varying pollution strength that requires efficient treatment systems of combined physical, biological, and chemical processes. However, these methods tend to be labor intensive and costly. Constructed wetlands have become a popular treatment method for industrial wastewater because of its simplicity requiring less technical expertise compared to other technologies.

Session: 19, Room: A, at Fri, 09/06/2019 - 09:00 to 09:15
Oral presentation in Wastewater treatment
[CEST2019_00761] Anaerobic MBR technology for treating municipal wastewater at ambient temperatures
by Plevri A., Mamais D., Noutsopoulos C.

An innovative way to treat municipal wastewater and produce energy at the same time is anaerobic treatment. Anaerobic processes are traditionally used for high-strength wastewater or municipal sludge treatment and only recently have been applied for the treatment of low strength municipal wastewater.

Session: 13, Room: A, at Thu, 09/05/2019 - 15:45 to 16:00
Oral presentation in Wastewater treatment
[CEST2019_00763] Waste water treatment with agricultural by-products: An investigation with date pit powder
by Alghamdi A.A.

Water is very precious and inevitable for every living objects including human beings. Huge quantity of waste water is generated by us every day and there are various methods to regenerate safe and pure drinking water from these waste waters. Researchers all over the world are continuously trying to develop low cost filtration system using various adsorbents. Agricultural waste products are being used as adsorbents and gaining momentum because of various attractive factors such as easy availability, low cost, non-toxic nature etc.

Session: 13, Room: A, at Thu, 09/05/2019 - 16:00 to 16:15
Oral presentation in Wastewater treatment
[CEST2019_00712] Nitrification inhibition test of salty wastewater containing Tetrakishydroxymethyl phosphonium sulphate (THPS), formaldehyde and methanol using salt-adapted nitrifying bacteria, an alternative test method to ISO method
by Chhetri R.K., Kokkoli A., Karvelas S., Andersen H.R.

Nitrification inhibition test is a standard method to test if the chemicals or samples received by wastewater treatment plants (WWTPs) are toxic to nitrifying bacteria in the wastewater treatment plant. Nitrification inhibition test based on ISO method ISO9509 or modified ISO9509 method (REFLAB method) cannot differentiate the toxicity between salt and toxicant in the sample, which is unrealistic for regulation of salty wastewaters that are treated in WWTPs with sufficient volume to dilute salts to harmless levels.

Session: 19, Room: A, at Fri, 09/06/2019 - 10:15 to 10:30
Oral presentation in Wastewater treatment
[CEST2019_00679] Treatment of Slaughterhouse Wastewater Utilizing Cogon Grass (Imperata cylindrica) in a Subsurface Flow System Constructed Wetland in Zamboanga Cıty, Philippines
by Flores R., Adil J.

Natural treatment systems are gaining preference as a wastewater treatment option since it is a form of ecosystem-based adaptation to climate change. The study investigated the performance of a laboratory scale horizontal, subsurface flow constructed wetland (SSFCW) planted with cogon grass (Imperata cylindrica) in reducing the pollutant concentration of slaughterhouse wastewater in Zamboanga City, Philippines.

Session: 13, Room: A, at Thu, 09/05/2019 - 15:30 to 15:45
Oral presentation in Wastewater treatment
[CEST2019_00658] Fouling-resistant membranes prepared via fully biobased layer-by-layer self-assembly
by Shamaei L., Khorshidi B., Ayranci C., Sadrzadeh M.

A fully biobased layer-by-layer deposition method, containing kraft lignin and chitosan as the polyelectrolytes, was employed to improve the anti-fouling properties of polyethersulfone membrane. Results revealed that the water in air contact angle decreased from 70° ± 2° for the pristine membrane to 34° ± 1° for the modified double-bilayer membrane, indicating enhanced hydrophilicity. The synthesized film was ultrathin and caused a slight decrease in permeation flux of the modified membrane compared to the pristine membrane.

Session: 13, Room: A, at Thu, 09/05/2019 - 15:00 to 15:15
Oral presentation in Wastewater treatment
[CEST2019_00659] Hybrid zero liquid discharge (ZLD) membrane/chemical process for the treatment of oil sands produced water
by Mohammadtabar F., Khorshidi B., Sadrzadeh M.

In this study, the applicability of a hybrid chemical/membrane process for the treatment of the boiler blow-down (BBD) water from steam assisted gravity drainage (SAGD) operation was explored. For the chemical pre-treatment prior to the membrane filtration, another waste stream of SAGD, i.e., ion exchanger regeneration wastewater (IERW), was used as a coagulant to reduce the concentration of organic matter and silica.

Session: 13, Room: A, at Thu, 09/05/2019 - 15:15 to 15:30
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_00560] Magnetite nanoparticles activated coal fly ash zeolites with application in waste water remediation
by Boycheva S., Miteva S., Trendafilova I., Zgureva D., Václavíková M., Popova M.

In this study, fly ash zeolites (FAZ) were synthesized by a double stage fusion-hydrothermal treatment. Magnetite nanoparticles were added to FAZ between the two synthesis stages. The obtained nanocomposites (MNP-FAZ) and their parent FAZ were studied with respect to their surface characteristics and were tested for decontamination of polluted waters. The experimentally obtained equilibrium adsorption isotherms were described applying different computational models.

Session: 13, Room: A, at Thu, 09/05/2019 - 16:30 to 16:33
Flash presentation in Wastewater treatment
[CEST2019_00539] Characterization of activated carbon prepared from Aegina pistachio shells for Hg removal
by Karagianni E., Chatzitheodoridis E., Papassiopi N.

Preparation of activated carbon from agricultural bio-products is a promising way to produce useful adsorbents for Hg removal. In this study Aegina pistachio shells were used as raw materials and the activation was carried out by impregnation with ZnCl2 and heating at 750oC under N2 atmosphere. Three different levels of impregnation ratios (IR) were used for the chemical activation procedure, i.e. IR 1.0, 1.5 and 2.0 grams of ZnCl2 per gram of raw material.

Session: 7, Room: A, at Thu, 09/05/2019 - 12:15 to 12:30
Oral presentation in Wastewater treatment
[CEST2019_00483] Unbiodegradable soluble COD removal from industrial wastewater by a hybrid moving bed biofilm reactor
by Carucci A., Cappai G., Camedda C., Erby G., Puggioni G., Milia S.,Tocco G.

In this study, plastics industry wastewater (PIWW) characterized by high total and soluble chemical oxygen demand (tCOD and sCOD, up to ~2200 and ~1500 mg/L, respectively) and remarkable unbiodegradable soluble COD (usCOD, 508±224 mg/L, 31±14% of tCOD) concentrations was treated at laboratory scale using a hybrid moving bed biofilm reactor (MBBR). Interestingly, the MBBR showed average tCOD, sCOD and usCOD removal efficiencies of 26±6, 32±11 and 36±11%, respectively, which were comparable to those achieved by the coagulation/flocculation pre-treatment currently applied at full-scale.

Session: 7, Room: A, at Thu, 09/05/2019 - 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_00434] Membrane distillation treating a petrochemical reverse osmosis concentrate
by Venzke C.D., Giacobbo A., Rodrigues M.A.S., Bernades A.M.

This study investigated the applicability of Direct Contact Membrane Distillation (DCMD) process for the treatment of a petrochemical industry effluent, intending to recover water from the concentrate produced by reverse osmosis (RO). In DCMD, the experiments were accomplished with a feed and permeate-inlet temperature of 60 °C and 20 °C, respectively.

Session: 13, Room: A, at Thu, 09/05/2019 - 16:24 to 16:27
Flash presentation in Wastewater treatment
[CEST2019_00450] Method Development for the Determination of Heavy Metals such as Copper, Iron, Manganese and Zinc in Aluminum Alloys by ICP-OES, based on wastewater analysis method
by Gkogkaki V., Karageorgis A., Pantazis K.

The determination of Heavy Metals such as Copper, Iron, Manganese and Zinc in Aluminum alloys is usually achieved following ASTM E3061-17 Method. Alternatively, for time and cost saving, the laboratory’s ΕΝ ISO 11885:2009 method for wastewater analysis was appropriately modified producing satisfactory results. Parameters such as matrix effect, wavelength, plasma conditions, calibration standards and dilution conditions of the alloy were examined for the accurate measurement of these elements in Aluminum alloys (e.g. CRMs, according to their Certified Values).

Session: 13, Room: A, at Thu, 09/05/2019 - 16:27 to 16:30
Flash presentation in Wastewater treatment
[CEST2019_00405] Quality Improvement of collected rain water by elimination of micropollutants to sea site settlements with the use of new technologies
by Kollias P.S., Kollias V.P., Kollias S.

The continuous increase of water needs in sea site settlements, created the need to collect rain waters in order to use them, after their treatment to achieve the necessary quality improvement. To realize that we need at first to mark the water sources in the neighboring area of the serviced district, in order to collect the necessary water quantities, for the covering of the existing necessities. One part of the sustained pollution is removed from the water treatment installations but the rest remains in the natural medium.

Session: 19, Room: A, at Fri, 09/06/2019 - 09:15 to 09:30
Oral presentation in Wastewater treatment
[CEST2019_00417] Use of the microalgae Chlorella Sorokiniana for municipal wastewater treatment: batch experiments
by Kotoula D., Iliopoulou A., Irakleous-Palaiologou E., Gatidou G., Aloupi M., Fountoulakis M.S., Stasinakis A.S.

Batch experiments were conducted in order to investigate the use of microalgae Chlorella sorokiniana for the treatment of different types of municipal wastewater (raw sewage, anaerobically treated wastewater, aerobically treated wastewater) and investigate the role of light and addition of ammonium on its growth. All experiments were conducted in triplicates and lasted for 7 days.

Session: 13, Room: A, at Thu, 09/05/2019 - 16:21 to 16:24
Flash presentation in Wastewater treatment
[CEST2019_00337] Aerobic degradation of tetramethyl ammonium hydroxide (TMAH) from effluents of semiconductor industries: kinetic studies of laboratory and pilot experiments
by Innocenzi V., De Michelis I., Ippoiıto N.M., Mazziotti Di Celso G., Prisciandaro M., Veglio F.

Aerobic degradation of effluents contains tetramethylammonium hydroxide molecules (TMAH), coming from an electronic industry, was studied at laboratory and pilot scale. At the first, the preliminary experiments were conducted using a lab scale reactor inoculated with activated sludge coming from urban wastewater treatment. Several batches have been performed on real effluent, in which TMAH concentration was about 1800 mg/L. The results showed that after acclimation, the microorganisms removed 99% of TMAH in seven days.

Session: 7, Room: A, at Thu, 09/05/2019 - 11:30 to 11:45
Oral presentation in Wastewater treatment
[CEST2019_00356] Tuning of an advanced control system on a membrane process for tannery wastewater purification and chromium recovery purposes
by Marchetti A., Stoller M.

Tannery wastewater represent a hazard to the environment due to its high content of chromium. Conventional methods to purify this wastewater stream are available, but not capable to recover back chromium to the tannery process. Membranes appears to be a promising technology to achieve both targets of water purification and recycling of chromium.

Session: 7, Room: A, at Thu, 09/05/2019 - 11:45 to 12:00
Oral presentation in Wastewater treatment
[CEST2019_00302] Printing ink wastewater treatment using electrocoagulation
by Papadopoulos K.P., Argyriou R., Ekonomou C.N., Tatoulis T.I., Tekerlekopoulou A.G., Vayenas D.V.

Packaging paper wastewaters, stemming mainly from the dyeing sector of the production process (where printing inks are utilized), are characterized by large concentrations of organic matter, deep, strong color and almost zero biodegradability factor. These attributes, in combination with the presence of some toxic compounds (heavy metals, VOCs etc.) make further treatment necessary, before releasing the wastewater to the environment.

Session: 1, Room: A, at Thu, 09/05/2019 - 10:15 to 10:30
Oral presentation in Wastewater treatment
[CEST2019_00304] Biotreatment of Brewery Wastewater Using the Filamentous Cyanobacterium Leptolyngbya sp.
by Papadopoulos K.P., Economou C.N., Moustaka-Gouni M., Tekerlekopoulou A.G., Aggelis G., Vayenas D.V.

Brewery wastewater is generated from the beer brewing process in large amounts (4-8 m3 per m3 of beer produced). Brewery wastewater consists of high organic matter content, significant nitrogen and phosphorus concentrations and easily biodegraded compounds. Even though most biological treatment technologies applied to brewery wastewaters include the use of bacteria, cyanobacteria (photosynthetic microorganisms) constitute attractive means for sustainable and low cost wastewater treatment producing high biomass concentration.

Session: 13, Room: A, at Thu, 09/05/2019 - 16:15 to 16:18
Flash presentation in Wastewater treatment
[CEST2019_00307] Treatment of various agro-industrial wastewaters using electrocoagulation
by Benekos A., Papadopoulos K., Triantaphyllidou I.-E.,Tekerlekopoulou A.G., Vayenas D.V.

Greece, although not over-industrialized, faces issues connected to pollution of its water resources, as conventional wastewater treatment methods often proved ineffective at removing some pollutants such as suspended solids and pigments. Therefore, the need of developing efficient, modern anti-pollution techniques for the preservation of a viable environment is urgent as ever. Electrocoagulation (EC) is one of these widely studied, promising methods.

Session: 13, Room: A, at Thu, 09/05/2019 - 16:18 to 16:21
Flash 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_00273] The Use of Biochar from Waste Wooden Biomass for Removal of Emerging Pollutants
by Žgajnar Gotvajn A., Carvalho A.P., Marinšek M.,Kalčikova G.

The aim of presented research is to use biochar produced from waste biomass for removal of veterinary antibiotic tiamulin from model wastewater. Produced biochar was activated using different chemical methods (KOH treatment under various conditions). It was characterised using BET method for the determination of the pore size distribution and pore volume fraction as well as SEM microscopy. Results indicated importance of biochar activation to achieve applicable adsorption characteristics. In 180 minutes of batch experiment up to 78% of tiamulin was removed.

Session: 1, Room: A, at Thu, 09/05/2019 - 10:00 to 10:15
Oral 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
[CEST2019_00245] Impregnated Resins as Novel Sorbents for Removal of Toxic Metal Ions from Aqueous Solutions
by Zawierucha I., Nowik-Zajac A.,Kozlowski C.

In this study the performance of impregnated resin was evaluated as the sorbent for the removal of lead ions from aqueous solutions. It was observed that the lead removal efficiency depends on the sorbent dose, initial concentration of metal ions, pH of water and the contact time. The results of batch experiments showed the highest removal efficiency of Pb(II) ions from water (>99%) at L:S = 100:1 for the following conditions: initial concentration of metal ions of 10 mg/dm3, pH = 6, and contact time of 60 min. The experimental equilibrium data were also described by sorption isotherms.

Session: 7, Room: A, at Thu, 09/05/2019 - 12:33 to 12:36
Flash presentation in Wastewater treatment
[CEST2019_00251] Challenges in biological treatment plants: the approach of zero sludge waste
by Theofanidis S.A., Samiotis G., Bellos D., Pekridis G., Tsioptsias C.,Amanatidou E.

The current trend in operation of biological Wastewater Treatment Plants (WWTPs) is the minimization of sludge wastage due to its labor and cost intensive management process. Minimization of sludge can be achieved by increasing the solids retention time (SRT) in a WWTP, up to an almost complete retention of solids.

Session: 1, Room: A, at Thu, 09/05/2019 - 09:45 to 10:00
Oral presentation in Wastewater treatment
[CEST2019_00254] Removal of Toxic Metal Ions Through Polymer Inclusion Membranes Containing Macrocyclic Ligands as Carriers
by Nowik-Zajac A., Zawierucha I., Kozlowski C.

More strict environmental regulations on the discharge of toxic metals require developing various technologies for their removal from polluted streams. The separation of toxic metal ions using immobilized membranes with doped ligands, due to their high selectivity and removal efficiency, increased stability, and low energy requirements, is promising for improving the environmental quality. Cellulose triacetate-based polymer inclusion membranes (PIMs), with macrocyclic ligands as ion carriers, were studied for their ability to transport of toxic metal ions from aqueous solutions.

Session: 7, Room: A, at Thu, 09/05/2019 - 12:36 to 12:39
Flash presentation in Wastewater treatment
[CEST2019_00235] Monitoring Of Treated Domestic Waste Water Quality
by Poulli K., Rossidou E., Kozakou S., Michael N., Demetriou E., Christofidou M., Aletrari M.

Cyprus is experiencing severe water supply deficiency. Particularly in summer months the situation is aggravated mainly due to low precipitation, high evaporation and increased demands for irrigation and tourisms. The use of treated wastewaters for environmental purposes such as recharging aquifers, agricultural irrigation and municipal landscape is highly contributing in the scarcity problem. In Cyprus there are 8 large urban plants and 25 small community plants for domestic waste treatment.

Session: 7, Room: A, at Thu, 09/05/2019 - 12:30 to 12:33
Flash presentation in Wastewater treatment
[CEST2019_00169] Phosphorus and nitrogen recovery from wastewater in the form of struvite: alternative magnesium sources
by Primikyris G., Siahos K., Vavouraki A., Putnis C.V., Natsi P.D., Koutsoukos P.G.

Recovery of phosphorus and nitrogen from municipal and other types of wastewater may be achieved through the direct crystallization of struvite (magnesium ammonium phosphate hexahydrate, Mg•NH4•PO4•6H2O). Wastewater deficiency in magnesium makes it necessary for the external addition of magnesium to make up for the supersaturation needed. In the present work we have tested artificial seawater and saturated with respect to calcined magnesia (MgO) aqueous solutions as magnesium sources, as both sources are low cost and readily available.

Session: 1, Room: A, at Thu, 09/05/2019 - 09:30 to 09:45
Oral presentation in Wastewater treatment