scholarly journals Sulfate Radical Technologies as Tertiary Treatment for the Removal of Emerging Contaminants from Wastewater

2017 ◽  
Vol 9 (9) ◽  
pp. 1604 ◽  
Author(s):  
Monica Brienza ◽  
Ioannis Katsoyiannis
Keyword(s):  
Emerging Contaminants ◽  
Sulfate Radical ◽  
Tertiary Treatment ◽  
Radical Technologies

Sulfate radical-induced destruction of emerging contaminants using traces of cobalt ions as catalysts

Chemosphere ◽  
2020 ◽  
Vol 256 ◽  
pp. 127061 ◽  
Author(s):  
Yong Feng ◽  
Guang-Guo Ying ◽  
Zequn Yang ◽  
Kaimin Shih ◽  
Hailong Li ◽  
...  
Keyword(s):  
Emerging Contaminants ◽  
Sulfate Radical ◽  
Cobalt Ions

scholarly journals Efficient Degradation of Acesulfame by Ozone/Peroxymonosulfate Advanced Oxidation Process

Molecules ◽  
2019 ◽  
Vol 24 (16) ◽  
pp. 2874 ◽  
Author(s):  
Yu Shao ◽  
Zhicheng Pang ◽  
Lili Wang ◽  
Xiaowei Liu
Keyword(s):  
Hydroxyl Radical ◽  
Active Sites ◽  
Emerging Contaminants ◽  
Water Solubility ◽  
Advanced Oxidation Process ◽  
Negative Impact ◽  
Degradation Products ◽  
Electrical Energy ◽  
Sulfate Radical ◽  
Electrical Energy Per Order

Artificial sweeteners (ASWs), a class of emerging contaminants with good water solubility, have attracted much attention recently because of their wide use and negative impact on the aquatic environment and drinking water. Efficient technologies for removing ASWs are in urgent need. This study investigated degradation of typical ASW acesulfame by ozone-activated peroxymonosulfate process (O3/PMS) in prepared and real waters. O3/PMS can degrade >90% acesulfame in prepared water within 15 min at a low dosage of O3 (60 ± 5 µg∙min−1) and PMS (0.4 mM). Ozone, hydroxyl radical (HO•), and sulfate radical (SO4•−) were identified as contributors for ACE degradation and their contribution proportion was 27.1%, 25.4%, and 47.5% respectively. O3/PMS showed the best degradation performance at neutral pH and were sensitive to constituents such as chloride and natural organic matters. The qualitative analysis of degradation products confirmed the involvement of hydroxyl radical and sulfate radical and figured out that the active sites of ACE were the C=C bond, ether bond, and C-N bond. The electrical energy per order ACE degradation were calculated to be 4.6 kWh/m3. Our findings indicate that O3 is an efficient PMS activator and O3/PMS is promising due to its characteristic of tunable O3−HO• SO4•− ternary oxidant involving.

scholarly journals Intensification of UV-C tertiary treatment: Disinfection and removal of micropollutants by sulfate radical based Advanced Oxidation Processes

2019 ◽  
Vol 372 ◽  
pp. 94-102 ◽  
Author(s):  
J. Rodríguez-Chueca ◽  
C. García-Cañibano ◽  
R.-J. Lepistö ◽  
Á. Encinas ◽  
J. Pellinen ◽  
...  
Keyword(s):  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Sulfate Radical ◽  
Tertiary Treatment ◽  
Oxidation Processes ◽  
Uv C

Application of Photo-Fenton as a Tertiary Treatment of Emerging Contaminants in Municipal Wastewater.

2010 ◽  
Vol 44 (5) ◽  
pp. 1792-1798 ◽  
Author(s):  
N. Klamerth ◽  
S. Malato ◽  
M. I. Maldonado ◽  
A. Agüera ◽  
A. R. Fernández-Alba
Keyword(s):  
Emerging Contaminants ◽  
Municipal Wastewater ◽  
Tertiary Treatment

scholarly journals Identification of transformation products of emerging contaminants during tertiary treatment processes and their disposal in the environment by mass spectrometric techniques

2017 ◽  
Author(s):  
Μαρία-Χριστίνα Νίκα
Keyword(s):  
Emerging Contaminants ◽  
Transformation Products ◽  
Mass Spectrometric ◽  
Tertiary Treatment ◽  
Treatment Processes ◽  
Mass Spectrometric Techniques

Η διαθέσιμη βιβλιογραφία έχει καταδείξει την ατελή απομάκρυνση των αναδυόμενων ρύπων κατά τη βιολογική επεξεργασία που λαμβάνει χώρα στα Κέντρα Επεξεργασίας Λυμάτων (ΚΕΛ). Παρόλο που ο πρωταρχικός ρόλος της τριτοβάθμιας επεξεργασίας είναι η εξάλειψη των μικρορύπων, το παρεχόμενο οξειδωτικό μέσο αντιδρά με τους αναδυόμενους ρύπους, καταλήγοντας στο σχηματισμό άγνωστων προϊόντων μετασχηματισμού. Ο κύριος στόχος της παρούσας διπλωματικής εργασίας ήταν η διερεύνηση της απομάκρυνσης αναδυόμενων ρύπων καθώς και η ταυτοποίηση των προϊόντων μετασχηματισμού τους, τα οποία παράγονται κατά τις μεθόδους απολύμανσης που εφαρμόζονται σαν τριτοβάθμια επεξεργασία στα ΚΕΛ. Αρχικά παρουσιάζεται μια εισαγωγή για τους αναδυόμενους ρύπους και τον πιθανό μετασχηματισμό τους κατά τη διάρκεια των διεργασιών που εφαρμόζονται στα ΚΕΛ, και ιδιαιτέρως κατά τη διάρκεια της χλωρίωσης και οζόνωσης. Στη συνέχεια παρουσιάζονται συγκεκριμένες πορείες εργασίας και τεχνικές σχετικές με την ταυτοποίηση αναδυόμενων ρύπων και των προϊόντων μετασχηματισμού τους, οι οποίες βασίζονται σε αναλύσεις φασματομετρίας μάζας υψηλής διακριτικής ικανότητας. Το πειραματικό μέρος της παρούσας διπλωματικής εργασίας αποτελείται από τα ακόλουθα τρία μέρη: (α) Χλωρίωση βενζοτριαζολών και βενζοθειαζολών και ταυτοποίηση των προϊόντων μετασχηματισμού τους με υγροχρωματογραφία συζευγμένη με φασματομετρία μάζας υψηλής διακριτικής ικανότητας (Κεφάλαιο 3), (β) Οζόνωση ρανιτιδίνης: επίδραση των πειραματικών συνθηκών και ταυτοποίηση προϊόντων μετασχηματισμού (Κεφάλαιο 4) και (γ) Απομάκρυνση και μετασχηματισμός της σιταλοπράμης και τεσσάρων προϊόντων βιομετατροπής της κατά τη διάρκεια πειραμάτων οζόνωσης (Κεφάλαιο 5).Είναι πεποίθησή μας πως οι μελέτες αυτές θα συνεισφέρουν στην περαιτέρω ανάπτυξη της περιβαλλοντικής ανάλυσης, διεγείροντας το ενδιαφέρον των κανονιστικών αρχών, σχετικά με την ενσωμάτωση επιβλαβών προϊόντων μετασχηματισμού, τα οποία παράγονται κατά την τριτοβάθμια επεξεργασία των ΚΕΛ, σε ελέγχους ρουτίνας.

Removal of nutrients from Organic Liquid Agricultural Waste using filamentous algae.

2020 ◽  
Author(s):  
Gonzalo Flores-Morales ◽  
Mónica Díaz ◽  
Patricia Arancibia-Avila ◽  
Michelle Muñoz-Carrasco ◽  
Pamela Jara-Zapata ◽  
...  
Keyword(s):  
Organic Waste ◽  
Low Cost ◽  
Organic Liquid ◽  
Agricultural Waste ◽  
Filamentous Algae ◽  
Tertiary Treatment ◽  
Nutrient Reduction ◽  
Algae Removal ◽  
Algae Growth ◽  
Waste Effluents

Abstract A feasibility analysis of tertiary treatment for Organic Liquid Agricultural Waste is presented using filamentous algae belonging to the genus Cladophora sp. as an alternative to chemical tertiary treatment. The main advantages of tertiary treatments that use biological systems are the low cost investment and the minimal dependence on environmental variables. In this work we demonstrate that filamentous algae reduces the nutrient load of nitrate (circa 75%) and phosphate (circa 86%) from the organic waste effluents coming from dairy farms after nine days of culture, with the added advantage being that after the treatment period, algae removal can be achieved by simple procedures. Currently, the organic wastewater is discarded into fields and local streams. However, the algae can acquire value as a by-product since it has various uses as compost, cellulose, and biogas. A disadvantage of this system is that clean water must be used to achieve enough water transparency to allow algae growth. Even so, the nutrient reduction system of the organic effluents proposed is friendly to the ecosystem, compared to tertiary treatments that use chemicals to precipitate and collect nutrients such as nitrates and phosphates.

Sulfate radical ion – based AOPs

2017 ◽  
Vol 16 ◽  
pp. 429-460
Author(s):  
Nathalie Karpel Vel Leitner
Keyword(s):  
Sulfate Radical

Costs of tertiary treatment of municipal wastewater by rapid sand filter with coagulants and UV

2003 ◽  
Vol 3 (4) ◽  
pp. 145-152 ◽  
Author(s):  
H. Heinonen-Tanski ◽  
P. Juntunen ◽  
R. Rajala ◽  
E. Haume ◽  
A. Niemelä
Keyword(s):  
Total Phosphorus ◽  
Municipal Wastewater ◽  
Pilot Scale ◽  
Treated Wastewater ◽  
Tertiary Treatment ◽  
Sand Filter ◽  
Physico Chemical ◽  
Bathing Waters ◽  
Filtration Unit ◽  
Microbial Groups

Municipal treated wastewater has been tertiary treated in a pilot-scale rapid sand filter. The filtration process was improved by using polyaluminium coagulants. The sand-filtered water was further treated with one or two UV reactors. The quality changes of wastewater were measured with transmittance, total phosphorus, soluble phosphorus, and somatic coliphages, FRNA-coliphages, FC, enterococci and fecal clostridia. Sand filtration alone without coagulants improved slightly some physico-chemical parameters and it had almost no effect on content of microorganisms. If coagulants were used, the filtration was more effective. The reductions were 88-98% for microbial groups and 80% for total phosphorus. The wastewater would meet the requirements for bathing waters (2,000 FC/100 ml, EU, 1976). UV further improved the hygiene level; this type of treated wastewater could be used for unrestricted irrigation (2.2 TC/100 ml, US.EPA 1992). The improvement was better if coagulants were used. The price for tertiary treatment (filtration + UV) would have been 0.036 Euro/m3 according to prices in 2001 in 22 Mm3/a. The investment cost needed for the filtration unit was 0.020 Euro/m3 (6%/15a). Filtration with coagulants is recommended in spite of its costs, since the low transmittance of unfiltered wastewater impairs the efficiency of the UV treatment.

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