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43 articles for “COD removal”
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Treatment of Car Washing Unit Wastewater by Electrocoagulation
Abstract: Abstract Enormous amount of water is being used to wash a car. With the increase in number of cars day-by-day, the quantity of water being used to wash cars is also increasing. Generally, effluent from car washing units is discharged into public sewers without treatment. In this study, the wastewater from a car washing unit was collected in a bulk quantity and characterized. It was treated with the electrocoagulation process …
Published in Journal of Water Pollution & Purification Research · Vol. 3, Issue 2, 2016 · pp. 17–23 Read article
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Effect Of Different Shapes Of Air Diffusers On Removal Of Chemical Oxygen Demand Of Wastewater In Activated Sludge Process
Abstract: AbstractOne of the challenges faced in activated sludge process is the low solubility of oxygen in wastewater, affecting the microbial activity due to mass transfer limitations and ultimately hampering the effluent quality. To overcome this limitation various types of diffusers have been in use but the configuration in which the aerators must be placed is still an open question. A series of experiments were conducted using different shapes of diffuser …
Published in Journal of Water Resource Engineering and Management · Vol. 7, Issue 2, 2020 · pp. 9–14 Read article
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Utilization of Saccharomyces cerevisiae for Enhanced Electricity Generation during Domestic Wastewater Treatment via Microbial Fuel Cell Technology
Abstract: Abstract:The viable, cost-effective and energy-efficient wastewater treatment remains a curious concern among scientists. Microbial fuel cell (MFC) can offer such elegant solutions. MFC is an electrochemical system that converts chemical energy of chemical compounds into electricity via metabolic activities of microorganisms. MFCs are cost-effective methodology for wastewater treatment due to removal of contaminants from wastewater while at the same time producing electrical power. The wastewater, which is a source of …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 5, Issue 1, 2015 · pp. 45–50 Read article
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Cost Effective Wastewater Treatment Technique for Bara Nulla Peshawar
Abstract: Various samples from Bara Nulla in Peshawar were collected and analyzed, using standard methods for various important wastewater parameters. The effluent discharge from the nulla is highly polluted in terms of its physical and chemical properties. Most of it parameters do not meet the requirements of Pak-EPA NEQS limitations set for industrial and domestic effluent discharge. The average wastewater characteristics of nulla in terms of COD, BOD, TDS, TSS, turbidity …
Published in Journal of Geotechnical Engineering · Vol. 2, Issue 1, 2015 · pp. 24–28 Read article
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Phytoremediation of Water Pollutants using Eichhornia crassipes and Lemna minor
Abstract: Due to the paucity of availability of clean water sources throughout the world over, discharge of industrial wastewater into the receiving water bodies has become a serious threat to the environment because of major source of various contaminants and pollutants. Conventional wastewater technologies are usually time consuming, expensive, less efficient and produce secondary pollutants, therefore, scientists and researchers are trying to overcome this problem with novel methods. Phytoremediation is very …
Published in Journal of Water Pollution & Purification Research · Vol. 8, Issue 2, 2021 · pp. 9–15 Read article
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Studies on Biological Degradation of 4-Bromophenol Using Anaerobic, Anoxic and Aerobic Bioreactors
Abstract: The present study investigates biodegradation of 4-Bromophenol (4-BP) and simultaneous removal of COD in anaerobic, anoxic and aerobic moving bed bioreactors. Cow dung slurry was used as a source of microbial consortium for acclimatization in moving bed reactors in batch mode. The acclimated microbial consortium was able to degrade various concentrations such as 5, 10 and 15 mg/l of 4-BP within specific time period. Biodegradation was evaluated by determining total …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 7, Issue 1, 2016 · pp. 37–41 Read article
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Comparison of Photocatalytic activity of Various Metallic and Non-metallic doped TiO2 Nano Particles for Treatment of Pharmaceutical Effluent
Abstract: The use of semiconductor oxide particles such as TiO2 as photo catalysts has shown great utility in the complete mineralization of organic compounds present in effluent. The dopant maximize the electron trapping for further inhibiting excitation recombination and thereby enhancing the oxidation of organic compounds. A pilot scale synthesis of TiO2 nano particles has been carried out using the Sol-gel method with various metallic dopants like Iron, Copper, Cobalt, Vanadium, …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 8, Issue 2, 2018 · pp. 7–14 Read article
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Treatment of Dairy Cooling Unit Washing Wastewater using Modified Sequencing Batch Reactor (MSBR) with various Media
Abstract: A bench scale modified sequencing batch reactor (MSBR) was employed for treatment of diary cooling unit wastewater. The reactor was constructed in cylindrical shape with outlet nozzle at the bottom using borosilicate glass with capacity of 10 L. The reactor was supplied with oxygen by bubble air diffuser at the aeration rate of 4 L/h. The aeration rate was optimized by doing series of trials for MSBR operation. The reactor …
Published in Journal of Water Pollution & Purification Research · Vol. 1, Issue 1, 2014 · pp. 34–38 Read article
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Effect of Cycle Time Lengths on the Performance of Aerobic SBR Treating Tannery Wastewater
Abstract: AbstractTannery industry generates significant quantities of wastewater which contains high organic matter, nitrogen, and chromium which needs to be treated before discharged into receiving water bodies. The aim of this study is to characterize tannery wastewater and to investigate the effect of cycle time length on performance of aerobic sequencing batch reactor (SBR) for treating a high load tannery wastewater. In this experimental study, an aerobic biological SBR with 50m3 …
Published in Journal of Water Pollution & Purification Research · Vol. 6, Issue 3, 2019 · pp. 36–46 Read article
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Coagulation Performance of Activated Neem Leaf Powder in Treating Low Strength Dye Waste Water
Abstract: The use of chemical coagulants is not recommended because it affects health and economic considerations. Therefore, plant-based coagulants are preferred for treating waste water. It is very cheap and easily available; also it will not have any health hazards. A new coagulant is obtained through neem leaf powder, and has been found effective in the removal of dangerous pollutants from dyeing waste water. From the experimental investigations, it has been …
Published in Journal of Water Pollution & Purification Research · Vol. 2, Issue 1, 2015 · pp. 26–31 Read article
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Development of a Natural Fiber Sand–Carbon Composite Filter Using Agave sisalana for Sustainable Domestic Sewage Treatment
Abstract: This study presents an innovative approach to decentralized domestic sewage treatment by integrating Agave sisalana fibers as the core functional component within a composite filtration system. The filtration column was constructed using a vertical 1:3:1 layered configuration comprising silica sand (top), Agave sisalana fibers (middle), and activated carbon (bottom). Comprehensive experimental analyses were conducted to evaluate the system’s efficacy in removing key water quality parameters, including turbidity, total solids (TS), …
Published in Journal of Polymer & Composites · Vol. 13, Issue 6, 2025 · pp. 43–51 Read article
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Experimental Studies on Modified Sequential Batch Reactor Using High Density Poly Ethylene as a Media
Abstract: Dairy industry wastewater is being a challenge to the environment. The effluent from the diary industries contain high amount of sulphate, sulphide, ammonia, chloride, nitrate, oil and grease, etc. To treat dairy waste water many methods were developed by researchers in the last few decades. Modified sequencing batch reactors (MSBRs) process used for different type of wastewater such as municipal wastewater, landfill leachate, dairy wastewater slaughter house, etc. Main operating …
Published in Recent Trends in Civil Engineering & Technology · Vol. 4, Issue 2, 2014 · pp. 30–32 Read article
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Study on the Wastewater Characteristics of the Kitchen Effluent
Abstract: The implementation of low-cost, simple mitigation measures are required for the timely control and sustainable management of pollution problems in developing countries. This study was designed to investigate the wastewater characteristics of the kitchen effluent, and to design a low-cost wastewater treatment plant for the kitchen based on the data obtained. For the wastewater quality analysis of the kitchen effluent, various composite samples were collected from the local region. The …
Published in Journal of Water Pollution & Purification Research · Vol. 2, Issue 1, 2015 · pp. 1–7 Read article
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Assessment of the Potential of Permeable Concrete using Blast Furnace Slag in Treating the Highway Side Storm Water
Abstract: Storm water from highway side contains organic and inorganic pollutants including significant amount of heavy metals which need to be treated before the storm water is let into the natural water bodies. In this study, the potential of pervious concrete using blast furnace slag was assessed for pollutants removal from the highway side storm water. Removal efficiencies in respect of nitrate, phosphate, chemical oxygen demand (COD), TSS, lead, chromium, nickel …
Published in Journal of Water Pollution & Purification Research · Vol. 5, Issue 2, 2018 · pp. 5–10 Read article
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Study of the Effect of Rice Husk As An Active Low-cost Adsorbant for Textile Wastewater Treatment
Abstract: Textile wastewater contains different colors which are harmful to the environment. Activated carbon can be used for the decolorization of textile wastewater. Most of the textile plants do not use the activated carbon due to its expensive cost and still it was classified as imported item. Low-cost adsorbant produced from locally available materials can solve this problem. This paper describes the color removal of textile wastewater by adsorption process using …
Published in Recent Trends in Civil Engineering & Technology · Vol. 4, Issue 3, 2014 · pp. 16–19 Read article
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Performance Appraisal of Two-stage On-site Domestic Wastewater Treatment System under Ambient Environment
Abstract: AbstractThe rapid growth in population has rendered the centralized sewerage systems a non-realistic option in sparsely populated areas. Consequently, an on-site wastewater treatment system (OWTS) is a viable alternative and cost-effective solution of sewerage system. Septic tanks with soil absorption systems are a simple mean of onsite treatment of the domestic wastewater. However septic tanks have low treatment efficiency along with several technical and constructional drawbacks. In order to improve …
Published in Recent Trends in Civil Engineering & Technology · Vol. 8, Issue 1, 2018 · pp. 20–28 Read article
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Isolation and Screening of Some Protease Producing Bacteria to Treat Paper and Pulp Effluent
Abstract: Industrial pollution is one of the most alarming threats to the environment and paper and pulp mill is one of the prime contributors to it. Paper and pulp mill effluent affects biotic and abiotic components of the environment. Different methods are being employed for the treatment, but the biological method is found to be more efficient in terms of colour removal and for reduction in the value of BOD, COD, …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 9, Issue 2, 2019 · pp. 11–16 Read article
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Study of the Effect of Saline Solution on the Extraction of the Acacia Gum Active Coagulant for Textile Wastewater Treatment
Abstract: The use of synthetic coagulants is not regarded as suitable due to health and economic considerations. A new coagulant obtained through polymerization of acacia gum extract has been characterized in the removal of dangerous dye pollutants. The present study was aimed to investigate the effects of acacia gum as coagulant in treatment of textile wastewater. The coagulant prepared was employed for the removal of sludge at the different doses. The …
Published in Recent Trends in Civil Engineering & Technology · Vol. 4, Issue 3, 2014 · pp. 20–24 Read article
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Optimization of Turning Process Parameters by Genetic Algorithm Approach
Abstract: In this research, turning parameters were optimized through a genetic algorithm for the purpose to minimize surface roughness and to maximize the material removal rate. High finish quality is guaranteed through minimum surface roughness, and efficient process planning is facilitated through maximum material removal rate optimization. For predicting surface roughness and material removal rate with respect to spindle speed, feed rate, and depth of cut, the empirical models were developed …
Published in Journal of Production Research & Management · Vol. 15, Issue 1, 2025 · pp. 33–41 Read article
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Treatment of Textile Wastewater using Bentonite Clay as a Natural Coagulant
Abstract: The main objective of the present study was treatment of dye waste by coagulation with clay to achieve maximum removal efficiency of color and sludge.The present study was aimed to investigate the effects of bentonite clay as coagulant in treatment of textile wastewater. The coagulant prepared was employed for the removal of sludge at the different doses. The maximum coagulant for removal of colour and sludge was found at an …
Published in Journal of Water Pollution & Purification Research · Vol. 1, Issue 2, 2014 · pp. 24–27 Read article