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Showing 1 to 20 of 221 for “"Removal efficiency"”.
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Characterization and Removal Efficiency Comparison of Bioretention Soil Media Mixtures
… at removing influent TSS with an average removal rate of over 88% across all the columns, ranging from 99.9% removal to 73.6% removal. Most bioretention soil mixtures used in the test were shown to be ineffective at removing influent nitrates, with breakthrough of nitrate occurring after …
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Optimization of intermittent aeration for increased nitrogen removal efficiency and improved settling
… SRT of 1.5" 2 days without biological nitrogen removal (BNR). BNR is considered more cost-effective than comparable chemical and physical processes, but it requires considerable resources to meet increasingly strict discharge limits. As these limits decrease, the resource requirement increases, …
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Magnetic seeding aggregation to enhance the removal efficiency of TiO2 nanoparticles from water
… sources of intake for drinking water treatment. Removal of these engineered nanoparticles in wastewater and drinking water treatment processes is a very important step towards the protection of environmental and public health as well as protecting water treatment units from fouling and other …
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Influence of Ag Nanoparticle Loading on Dye and Salt Removal Efficiency of Graphene Oxide Membranes
… reduce swelling, and improve overall filtration efficiency. Ag NPs not only stabilize the GO structure through interlayer interactions but also contribute antimicrobial and fouling-resistant properties, making them ideal candidates for wastewater treatment applications. While numerous studies …
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Evaluating the Dual Role of Municipal Wastewater Treatment Plants in the Removal Efficiency and Environmental Emission of Microplastics
… filtration and membrane bioreactors, achieve removal efficiencies of up to 99 %, significant quantities of MPs still persist in treated effluent and accumulate in sewage sludge. Notably, sludge dewatering processes were identified as a critical point of reintroduction into the wastewater …
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The Effect of Antecedent Dry Time on Water Quality Inflow and Outflow to Wet Ponds and Pollutant Removal Efficiency
Storm water is a significant source of pollutants in urban areas. Urbanization results in reduced water quality of surface waters due to the loss of vegetation and pervious areas, and increased impervious cover, pollutant loading, and volume and velocity of storm water runoff. The potential for …
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Heavy metal removal from bilge water by electrocoagulation treatment
… purpose of this research was to observe the removal efficiency for copper (Cu), nickel (Ni), and zinc (Zn) using Electrocoagulation (EC) technique in a continuous flow reactor with a synthetic bilge water emulsion; and additionally, to discuss the operation cost of the treatment. The optimal …
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Effect of the COD:TKN ratio and mean cell residence time on nitrogen removal in the completely mixed activated sludge process
… that the COD:TKN ratio had on total nitrogen removal efficiency. as well as, the effect on COD removal efficiency, nitrogen distribution in the effluent streams, and total system mixed liquor suspended solids concentrations in the activated sludge process as a function of the mean cell …
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The feasibility and microbial community dynamics of using down flow hanging sponges (DHS) reactor in treating high strength soft drink wastewater
… volume/day, and achieved > 90% organic matters removal efficiency. The third reactor consistently achieved a final effluent COD < 60 mg/L. It was observed that in the first two reactors, the organic matters removal efficiency could be correlated with parameters like effluent pH, volatile fatty …
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Biological Treatment of Reclamation of Industrial Wasterwater From Post-Combustion Carbon Capture
… From the first experiment, the following removal efficiency for COD, TN, TKN, ammonia, and sulfate were achieved: 95%, 62%, 88%, > 99%, and 11%, and 96%, 38%, 47%, 89%, > 99%, and 18% for SBR and SANI, respectively at low substrate concentration; 95%, 88%, 88%, > 99%, and 10%, and 97%, …
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Produced Water Treament Using DAF With a Mixture of Ionic Liquids and Organoclay as Pre-treatment Chemicals
… were done to determine the optimum oil removal efficiency using dissolved air flotation system under specified experimental conditions using a 3*3 Taguchi method of experimental design. An ionic liquid (1-ethyl-3-methyl-Imidazolium actetate) (EMIMAc) and an organoclay(OC) (JC 9450) were …
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Green approach to treat institutional wastewater by using cassava peels starch (CPS) as coagulant aid
… coagulants. This study traces the potential removal of pollutants from institutional wastewater by coagulation-flocculation processes. Alum as primary coagulant and CPS as coagulant aid was used for removal of pollutants. A series of batch experiments were performed to study the removal …
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Treatment of oil-water emulsion from the machinery industry by Fenton's reagent
<p>The chemical oxygen demand (COD) removal efficiency for treatment of an oil-water emulsion from the machinery industry using Fenton's reagent was investigated. The optimal [H 2 O 2 ]/[Fe 2+ ] molar ratio for COD removal was 3. An orthogonal test was designed based on the optimal molar [H 2 O 2 …
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Simultaneous removal of sulfur dioxide and nitric oxide from gas streams via combined plasma photolysis
… from the gas stream by an aerosol particle removal device. Experimental results indicate that the SO$\sb2$ and NO removal efficiencies with DBDs are sensitive to (H$\sb2$0$\sb{\rm (g)}$), (O$\sb2$), (CO$\sb2$), and the temperature of the gas stream. When a sufficient voltage is applied to …
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Effects of nickel on activated sludge performance at varying COD:TKN ratios
… a range of mean cell residence times, and COD removal efficiency, biokinetic coefficients, extent of nitrification, and nickel removal evaluated at each. Data from two earlier studies, in which 0.5 and 1 mg/l nickel doses were applied to similar units, were included for comparison. Organic …
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The removal of pesticides and heavy metals by reverse osmosis
… consider this treatment process as a potential removal technique for hazardous constituents. The purpose of this investigation was to determine the effectiveness of a field scale reverse osmosis unit, with a spiral wound poly(ether/urea) membrane, in removing pesticides and heavy metals from a …
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Intergrated leachate treatment by sequencing batch reactor (SBR) and micro-zeolite (MZ)
… An/Ax/Ox is used in order to achieve maximum removal. Then, followed by the performance of combination phases consisting An/Ax/Ox in SBR system with addition of adsorption adsorbent micro-zeolite (MZ) (size range 75-150 μm) at different dosages. The raw leachate and sludge were collected from …
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Mineral Surface Catalyzed Polymerization Of Estrogen And Microbial Deactivation By Fe3+-Saturated Montmorillonite: A Potentially Low Cost Material For Water Decontamination
… montmorillonite catalysis achieved highest βE2 removal efficiency at neutral solution pH and higher temperature. Common cations did not have impact on the reaction efficiency. Dissolved organic matter slightly reduced βE2 removal efficiency. Regardless of wastewater source, ~40% βE2 removal …
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The removal of perchlorate from waters using ion-exchange resins
… perchlorate, as well as their regeneration efficiency, were evaluated using both synthetic solutions and perchlorate-contaminated water from the Las Vegas Valley. For synthetic solutions, styrenic strong base resins showed high perchlorate removal efficiency but regeneration efficiency was …
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