scholarly journals Evaluation of the efficiency of an integrated biofilm and phytoremediation system with Nasturtium officinale for the treatment of municipal wastewater in Huancavelica

TAYACAJA ◽  
2021 ◽  
Vol 4 (2) ◽  
pp. 22-28
Author(s):  
Adiel Álvarez Ticllasuca ◽  
Marco Curasma Matamoros ◽  
Estefani Sandoval Condori ◽  
Fernando Toribio Román
Keyword(s):  
Wastewater Treatment ◽  
Removal Efficiency ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Domestic Wastewater ◽  
Pollutant Removal ◽  
Integrated System ◽  
Fecal Coliforms ◽  
Nasturtium Officinale ◽  
Domestic Wastewater Treatment

In this research removal efficiency was evaluated of organic pollutants of a biofilm and phytoremediation integrated system for municipal wastewater treatment in Huancavelica. A pilot plant consisting of a settler was installed that also retained oils and fats, a biological filter using as support material the calcareous stuff and a phytoremediation process with Nasturtium officinale (watercress) The hydraulic retention time was 5.5 hours and the flowrate of 0.011 L s -1, the evaluation was made of the proper functioning of processes by monitoring control parameters. The pollutant removal efficiency was determined by Student's "t" test (p <0.05). An average pH value of 7.57 and a temperature of 12.07 ° C were obtained, subsequently the measurement of BOD5 was initiated, obtaining maximum effluent values of 131 ppm and minimum values of 45 ppm and a removal efficiency of 44.8% was obtained, for COD. In total coliforms, fecal coliforms and Escherichia coli the removal was 66.67%, 94.59%, 81.22% and 72.12% respectively, oil and fat analysis was also performed and total suspended solids, however high removal efficiency was not obtained. It is concluded that the parameters of BOD5 and COD comply with the MPL for the effluents of municipal domestic wastewater treatment plants, while the rest of the parameters analyzed do not comply with the regulations. however high removal efficiency was not obtained. It is concluded that the parameters of BOD5 and COD comply with the MPL for the effluents of municipal domestic wastewater treatment plants, while the rest of the parameters analyzed do not comply with the regulations. however high removal efficiency was not obtained. It is concluded that the parameters of BOD5 and COD comply with the MPL for the effluents of municipal domestic wastewater treatment plants, while the rest of the parameters analyzed do not comply with the regulations.

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.

scholarly journals Evaluation of the Efficiency of Wastewater Treatment Plants in the Removal of Common Antibiotics from Municipal Wastewater in Hamadan, Iran

2017 ◽  
Vol 4 (1) ◽  
pp. 10921-10921 ◽  
Author(s):  
Reza Shokoohi ◽  
Abdollah Dargahi ◽  
Razieh Khamutian ◽  
Yaser Vaziri
Keyword(s):  
Wastewater Treatment ◽  
Removal Efficiency ◽  
Industrial Wastewater ◽  
High Performance ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Solid Phase ◽  
Aquatic Environments ◽  
Direct And Indirect Effects ◽  
Major Health

The presence of antibiotics in the environment, especially aquatic environments, is a major health and environmental concern.Wastewater treatment plants play an important role in the treatment of municipal and industrial wastewater and removal of contaminants.The aim of this study was to determine the concentration of prevalent antibiotics in municipal wastewater of Hamadan,Iran and to evaluate the removal efficiency of wastewater treatment plants. During 3 months (April, May, and June 2016), a total of 12 composite influent and effluent samples were collected from the wastewater treatment plants. Solid-phase extraction (SPE) was used for preparing the samples, which were then analyzed using high-performance liquid chromatography (HPLC) with UV detection.Based on the analysis of 6 antibiotics, three antibiotics, including amoxicillin, imipenem, and cefixime, were detected, and their concentrations were measured at 1.6, 10.7, and 5.8 ug/L, respectively. The removal efficiency of these antibiotics in wastewater treatment plants was 55.66%, 34.01%, and 24.33%, respectively. Due to the presence of examined antibiotics in the effluent and influent wastewater treatment plants, they might cause direct and indirect effects on human health and environment if proper measures are not taken by the authorities. Since the removal of these antibiotics from wastewater treatment plants is relatively poor, it is suggested to use advanced wastewater treatment plants to reduce antibiotics in effluent wastewater and decrease the adverse effects of these micropollutants.

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