scholarly journals Using Peroxymonosulfate-Ozone Advanced Oxidation For The Treated Wastewater Disinfection and Amoxicillin Micro-Pollutant Removal Simultaneously

2021 ◽  
Author(s):  
Gagik Badalians Gholikandi ◽  
Atefeh Mollazadeh ◽  
Hamidreza Farimaniraad ◽  
Hamidreza Masihi
Keyword(s):  
Removal Efficiency ◽  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Wastewater Treatment Plants ◽  
Oxygen Demand ◽  
Advanced Oxidation ◽  
Pollutant Removal ◽  
Treated Wastewater ◽  
Total Coliforms ◽  
Operational Conditions

Abstract Due to the recent efforts to improve the conventional disinfection methods efficiency of wastewater treatment plants effluent, in this study, the efficiency of the peroxymonosulfate-ozone (PMS+O3) advanced oxidation process in lab scale by the aim of disinfection and simultaneous removal of existing amoxicillin micro-pollutant under optimum operational condition was investigated for the first time. Furthermore, the results were compared with those obtained from the experiments conducted employing persulfate-ozone (PS+O3), hydrogen peroxide-ozone (H2O2+O3), and ozonation (O3) processes. For this purpose, the main parameters including the total coliforms, amoxicillin concentration, turbidity, chemical oxygen demand (COD), biochemical oxygen demand (BOD5), total nitrogen (TN), electrical conductivity (EC), total dissolved solids (TDS), and total suspended solids (TSS) were considered. The test results show that under optimized operational conditions (retention time of 20 minutes, ozone dosage rate of 0.83 mmol/L, and peroxymonosulfate concentration of 0.06 mmol , 99.99% total coliforms (e.g., the number of total coliforms reached consistently less than 400 MPN in 100 ml) removal was reached by peroxymonosulfate-ozone advanced oxidation process. Also, amoxicillin concentration removal efficiency reached 90±2%. In comparison, although the total coliforms reduction of PS+O3 and H2O2+O3 methods in 30 min are approximately the same, the amoxicillin concentration removal efficiency is about 60-70%. Due to the importance of ensuring effluent quality, the related removal efficiency of other considered parameters is also evaluated and presented. Eventually, the peroxymonosulfate-ozone method can be considered as a novel efficient approach for wastewater plants effluent disinfection and amoxicillin micro-pollutant removal simultaneously which is a novel approach.

Removal of Refractory Organic Compounds from Wastewater by Various Advanced Oxidation Process - A Review

2019 ◽  
Vol 6 (1) ◽  
pp. 8-16 ◽  
Author(s):  
Manjari Srivastav ◽  
Meenal Gupta ◽  
Sushil K. Agrahari ◽  
Pawan Detwal
Keyword(s):  
Organic Compounds ◽  
Conventional Treatment ◽  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Oxygen Demand ◽  
Ultra Violet ◽  
Advanced Oxidation ◽  
Complete Removal ◽  
Pollutant Removal ◽  
Treatment Technologies

Per capita average annual freshwater availability is gradually reduced due to increasing population, urbanization and affluent lifestyles. Hence, management of wastewater is of great concern. The wastewater from different industries can be treated by various conventional treatment methods but these conventional treatment technologies seem to be ineffective for the complete removal of pollutants especially refractory organic compounds that are not readily biodegradable in nature. Detergents, detergent additives, sequestering agents like EDTA, Pesticides, Polycyclic aromatic hydrocarbons, etc. are some of the recalcitrant organic compounds found in the wastewater. One of the treatment technologies for the removal of recalcitrant organic compounds is Advanced Oxidation Process (AOP). The production of hydroxyl free radical is the main mechanism for the AOP. AOP is a promising technology for the treatment of refractory organic compounds due to its low oxidation selectivity and high reactivity of the radical. Hydrogen peroxide (H2O2), Ozonation, Ultra-violet (UV) radiation, H2O2/UV process and Fenton’s reaction are extensively used for the removal of refractory organic compounds thus reducing Chemical Oxygen Demand (COD), Total Organic Carbon (TOC), phenolic compounds, dyes etc. to great extent. From the studies, we found that Fenton’s reagents appear to be most economically practical AOP systems for almost all industries with respect to high pollutant removal efficiency and it is also economical. From the energy point of view, the ozone based process proves to be more efficient but it is costlier than the Fenton’s process.

scholarly journals Efficiency and Technological Reliability of Contaminant Removal in Household WWTPs with Activated Sludge

2021 ◽  
Vol 11 (4) ◽  
pp. 1889 ◽  
Author(s):  
Agnieszka Micek ◽  
Krzysztof Jóźwiakowski ◽  
Michał Marzec ◽  
Agnieszka Listosz ◽  
Tadeusz Grabowski
Keyword(s):  
Activated Sludge ◽  
Wastewater Treatment Plants ◽  
Oxygen Demand ◽  
Domestic Wastewater ◽  
Pollutant Removal ◽  
Treated Wastewater ◽  
Contaminant Removal ◽  
Nitrogen And Phosphorus ◽  
Wastewater Samples ◽  
Polish Law

The results of research on the efficiency and technological reliability of domestic wastewater purification in two household wastewater treatment plants (WWTPs) with activated sludge are presented in this paper. The studied facilities were located in the territory of the Roztocze National Park (Poland). The mean wastewater flow rate in the WWTPs was 1.0 and 1.6 m3/day. In 2017–2019, 20 series of analyses were done, and 40 wastewater samples were taken. On the basis of the received results, the efficiency of basic pollutant removal was determined. The technological reliability of the tested facilities was specified using the Weibull method. The average removal efficiencies for the biochemical oxygen demand in 5 days (BOD5) and chemical oxygen demand (COD) were 66–83% and 62–65%, respectively. Much lower effects were obtained for total suspended solids (TSS) and amounted to 17–48%, while the efficiency of total phosphorus (TP) and total nitrogen (TN) removal did not exceed 34%. The analyzed systems were characterized by the reliability of TSS, BOD5, and COD removal at the level of 76–96%. However, the reliability of TN and TP elimination was less than 5%. Thus, in the case of biogenic compounds, the analyzed systems did not guarantee that the quality of treated wastewater would meet the requirements of the Polish law during any period of operation. This disqualifies the discussed technological solution in terms of its wide application in protected areas and near lakes, where the requirements for nitrogen and phosphorus removal are high.

scholarly journals The Use of Organic Coagulants in the Primary Precipitation Process at Wastewater Treatment Plants

Water ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1650 ◽  
Author(s):  
Krzysztof Czerwionka ◽  
Anna Wilinska ◽  
Agnieszka Tuszynska
Keyword(s):  
Organic Matter ◽  
Wastewater Treatment ◽  
Removal Efficiency ◽  
Wastewater Treatment Plants ◽  
Renewable Energy Sources ◽  
Pollutant Removal ◽  
Treated Wastewater ◽  
Biological Nutrient Removal ◽  
Precipitation Process ◽  
Primary Precipitation

Measurements for determining the effect of chemically enhanced primary treatment (CEPT) on the efficiency of pollutant removal from wastewater were carried out using conventional inorganic coagulants PIX113 with polymer A110 (Kemipol, Police, Poland) and unconventional cationic organic coagulants Cofloc (Attana, Coalville, UK) C29510 (Kemipol, Police, Poland) and Sedifloc 575 (3F Chimica, Sandrigo, Italy). The average removal efficiency in the 2-h sedimentation process was 46%, 34%, 8%, 12% for the total suspended solids, organic matter (COD), total nitrogen, and total phosphorus, respectively. The use of organic coagulants contributed to 14–81% increase of pollutant removal efficiency. Substantial discrepancies in biological nutrient removal processes were not discovered in two-phase (anaerobic-anoxic) experiments without and with the addition of the organic coagulants. The increase in organic matter removal efficiency as a result of the CEPT process may contribute to a 65–80% increase in biogas production. The conducted research confirms the possibility of using organic coagulants in the primary precipitation process in wastewater treatment plants (WWTPs) in accordance with the principles of maximum energy recovery, thereby promoting renewable energy sources. Additionally, organic coagulants, as opposed to inorganic ones, do not cause a significant increase of chloride and sulfate ion concentrations, which facilitates the use of treated wastewater in the water reuse systems, such as irrigation of agricultural crops.

ZnO nanoparticles immobilized on the surface of stones to study the removal efficiency of 4-nitroaniline by the hybrid advanced oxidation process (UV/ZnO/O3)

2019 ◽  
Vol 1176 ◽  
pp. 766-776 ◽  
Author(s):  
Mohammad Malakootian ◽  
Majid Amiri Gharaghani ◽  
Abbas Dehdarirad ◽  
Mehrdad Khatami ◽  
Mohammad Ahmadian ◽  
...  
Keyword(s):  
Removal Efficiency ◽  
Zno Nanoparticles ◽  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Advanced Oxidation

scholarly journals Pengaruh Variasi Rasio H2O2/COD dan Tegangan Terhadap Penurunan COD Air Limbah Rumah Sakit dengan Metode Elektro – Fenton

2020 ◽  
Vol 4 (2) ◽  
pp. 15
Author(s):  
Fami Amalia Putri ◽  
Sarto Sarto ◽  
Ahmad Tawfiequrrahman Yuliansyah
Keyword(s):  
Chemical Oxygen Demand ◽  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Oxygen Demand ◽  
Advanced Oxidation

Limbah Rumah Sakit memiliki senyawa polutan yang tinggi, beracun, dan bahkan ada yang bersifat radioaktif. Limbah yang paling banyak terdapat di Rumah Sakit yaitu limbah dalam bentuk cair yang mengandung limbah obat – obatan seperti jenis antibiotik, beberapa mikroorganisme patogen, dan kandungan logam berat yang dapat mencemari lingkungan hidup, mengganggu kesehatan manusia dan makhluk hidup lain. Limbah Rumah Sakit Kota Yogyakarta mempunyai kadar COD yang tinggi yaitu 421,03 mg/L dengan pH sebesar 7,3. Advanced Oxidation Process (AOPs) telah banyak terbukti dapat menurunkan kadar COD limbah industri maupun domestik. Pada penelitian ini, AOPs yang dipilih adalah Elektro – Fenton. Penelitian ini bertujuan untuk memperoleh kondisi operasi yang maksimum pada metode Elektro - Fenton dan mengetahui pengaruh dari parameter yang digunakan untuk menurunkan kadar Chemical Oxygen Demand (COD). Penanganan uji COD dilakukan untuk mengetahui pengurangan kadar oksigen pada air limbah agar sesuai dengan standar baku mutu air limbah Rumah Sakit yang dapat dibuang ke lingkungan yaitu sebesar 80 ppm. Proses Elektro – Fenton dilakukan secara batch, dengan variasi rasio H2O2/COD yang digunakan terdiri dari 2,125; 10; dan 19, 16 (g/g). Sedangkan variasi tegangan sebesar 3 volt, 4 volt, dan 5 volt. Kondisi maksimum diperoleh pada rasio H2O2/COD 10 (g/g) dan tegangan 4 volt dengan waktu kontak 60 menit. Kata Kunci : air limbah rumah sakit, elektro – fenton, proses oksidasi lanjutan, kebutuhan oksigen kimiawi, hidrogen peroksida

scholarly journals Wastewater Treatment by Advanced Oxidation Process and Their Worldwide Research Trends

2019 ◽  
Vol 17 (1) ◽  
pp. 170 ◽  
Author(s):  
José Antonio Garrido-Cardenas ◽  
Belén Esteban-García ◽  
Ana Agüera ◽  
José Antonio Sánchez-Pérez ◽  
Francisco Manzano-Agugliaro
Keyword(s):  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Advanced Oxidation ◽  
Pharmaceutical Products ◽  
Pollutant Removal ◽  
Field Methods ◽  
Biological Origin ◽  
Sustainable Solutions ◽  
Modern Development ◽  
The Usa

Background: Water is a scarce resource and is considered a fundamental pillar of sustainable development. The modern development of society requires more and more drinking water. For this cleaner wastewater, treatments are key factors. Among those that exist, advanced oxidation processes are being researched as one of the sustainable solutions. The main objective of this manuscript is to show the scientific advances in this field. Methods: In this paper, a systematic analysis of all the existing scientific works was carried out to verify the evolution of this line of research. Results: It was observed that the three main countries researching this field are China, Spain, and the USA. Regarding the scientific collaboration between countries, three clusters were detected—one of Spain, one of China and the USA, and one of Italy and France. The publications are grouped around three types of water: industrial, urban, and drinking. Regarding the research, 15 clusters identified from the keywords analyzed the advanced oxidation process (alone or combined with biological oxidation) with the type of wastewater and the target pollutant, removal of which is intended. Finally, the most important scientific communities or clusters detected in terms of the number of published articles were those related to the elimination of pollutants of biological origin, such as bacteria, and of industrial nature, such as pesticides or pharmaceutical products.

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