scholarly journals ECOTOXICOLOGICAL EVALUATION THROUGH ALLIUM CEPA OF FOOD INDUSTRY EFFLUENT TREATED BY PROCESS USING MEMBRANES

2018 ◽  
Vol 15 (30) ◽  
pp. 305-312
Author(s):  
L. KERBER ◽  
P. MARIOTTI ◽  
L. VOGNACH ◽  
J. A. TASSINARY ◽  
S. STULP
Keyword(s):  
Reverse Osmosis ◽  
Allium Cepa ◽  
Industrial Effluent ◽  
Toxicological Evaluation ◽  
Technical Application ◽  
Chemical Evaluation ◽  
Treated Effluent ◽  
Resource Degradation ◽  
Ecotoxicological Evaluation ◽  
Industry Effluent

Due to population growth, there is an increase in the tendency of water resource degradation. One of the biggest polluters is the practice of dumping industrial and domestic effluents without any treatment on the watercourse. The utilization of effluents is an alternative to minimize the inadequate waste dump, thus avoiding the overload on the treatment system as well as cutting down costs and expenses. This work’s objective is to evaluate the application of reverse osmosis in a food industrial effluent, in physicochemical and toxicological terms. A reverse osmosis technical application was conducted and then the effluent was examined, before and afterward, in terms of pH, Turbidity, Colouring, Conductivity, Dissolved Oxygen, Total Organic Carbon, and Total Nitrogen as well as a toxicological evaluation (Allium cepa). According to the obtained result, it can be identified that the technique of reverse osmosis showed treatment efficiency when applied to the effluent containing coloring and soy isoflavones, with regards to the physicals and chemical evaluation. In terms of toxicological evaluation, with respect to the radicular development, the treated effluent (permeate) showed a radicular growth, once the raw effluent did not develop any root.

A case study on pulp and paper industry effluent treatment

2021 ◽  
pp. 107-117
Author(s):  
Supriya Singh ◽  
Manoj K. Tiwari
Keyword(s):  
Management Practices ◽  
Industrial Effluent ◽  
Treatment Plant ◽  
Paper Mill ◽  
Pulp And Paper ◽  
Effluent Treatment ◽  
Treated Effluent ◽  
Pulp And Paper Industries ◽  
Industry Effluent

Industrial effluent Management is one of the major environmental concerns, especially in developing countries under rapid industrialization. The grossly polluting industries recognized by Central Pollution Control Board (CPCB), such as Pulp and Paper Industries, poses even bigger environmental threats, owing to quantity and quality of effluent generated. This paper aimed at analyzing effluent management practices in pulp and paper industries in India, and asses the performance variability of a paper mill effluent treatment plant (ETP), as a Case Study. Majority of pulp and paper industries found to still employ conventional methods of effluent treatment. Although, most of the parameters of treated effluent are commonly reported within CPCB’s permissible discharge limits, the treatment is usually cost and energy intensive, and produce high amount of solid residuals as sludge. For the case study paper mill ETP, the treatment efficiencies of the ETP units were analyzed under variable inlet pH, TSS, TDS, BOD and COD loads. The pH variations in the range of 6.5 to 9 had little effect of COD or TSS removal, however removal efficiencies were higher for larger inlet COD or TSS loads. The results of the study could be helpful in optimizing operation of the existing ETPs, as well as, guiding on upgrading ETPs with more cost-effective and efficient units.

scholarly journals Hexavalent Chromium Removal from Model Water and Car Shock Absorber Factory Effluent by Nanofiltration and Reverse Osmosis Membrane

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Amine Mnif ◽  
Imen Bejaoui ◽  
Meral Mouelhi ◽  
Béchir Hamrouni
Keyword(s):  
Reverse Osmosis ◽  
Hexavalent Chromium ◽  
Shock Absorber ◽  
Industrial Effluent ◽  
Operating Conditions ◽  
Retention Rates ◽  
Water Recovery ◽  
Reverse Osmosis Membrane ◽  
Industry Effluent ◽  
Model Water

Nanofiltration and reverse osmosis are investigated as a possible alternative to the conventional methods of Cr(VI) removal from model water and industrial effluent. The influences of feed concentration, water recovery, pH, and the coexisting anions were studied. The results have shown that retention rates of hexavalent chromium can reach 99.7% using nanofiltration membrane (NF-HL) and vary from 85 to 99.9% using reverse osmosis membrane (RO-SG) depending upon the composition of the solution and operating conditions. This work was also extended to investigate the separation of Cr(VI) from car shock absorber factory effluent. The use of these membranes is very promising for Cr(VI) water treatment and desalting industry effluent. Spiegler-Kedem model was applied to experimental results in the aim to determine phenomenological parameters, the reflection coefficient of the membrane (σ), and the solute permeability coefficient (Ps). The convective and diffusive parts of the mass transfer were quantified with predominance of the diffusive contribution.

Treatment of an industrial effluent by reverse osmosis

Desalination ◽  
1999 ◽  
Vol 126 (1-3) ◽  
pp. 219-226 ◽  
Author(s):  
Antonio Pérez Padilla ◽  
Eduardo L. Tavani
Keyword(s):  
Reverse Osmosis ◽  
Industrial Effluent

Removal of Heavy Metals from Industrial Effluent by Crossflow Microfiltration

1992 ◽  
Vol 25 (10) ◽  
pp. 55-67 ◽  
Author(s):  
R. C. Squires
Keyword(s):  
Heavy Metals ◽  
Pilot Trial ◽  
Industrial Effluent ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Sodium Sulphate ◽  
The Other ◽  
Operating Costs ◽  
Treated Effluent ◽  
Crossflow Microfiltration

The performance of Exxflow, a patented form of crossflow microfiltration, treating industrial wastewaters containing mixed heavy metals discharged by two types of industry is quantified and compared with the traditional technologies used for such treatment. Pilot trial results using Exxflow are shown and compared to the performance of the full scale plants now operating on these effluents. The operating costs of the Exxflow process are estimated for the two plants. One of which has been operating for 18 months and the other about 4 months. The Exxflow process is described and improvements which are being developed to lower the operating costs are presented. It is shown that industrial effluents containing mixed heavy metals are very effectively treated by the Exxflow process and since the installation of the plants the treated effluent has been of a quality suitable for discharge to the River Thames in one case and to a sewage treatment plant in the other. Unlike other processes, Exxflow has shown that it can successfully treat effluent containing mixed metals and that removal of antimony from mixed metal waste waters is affected by the concentration of sodium sulphate in the wastewater.

scholarly journals Comparative Study of Denitrifying-MBBRs with Different Polyethylene Carriers for Advanced Nitrogen Removal of Real Reverse Osmosis Concentrate

2020 ◽  
Vol 17 (8) ◽  
pp. 2667
Author(s):  
Tong Wang ◽  
Tong Wu ◽  
Haiyan Wang ◽  
Weiyang Dong ◽  
Yaqian Zhao ◽  
...  
Keyword(s):  
Reverse Osmosis ◽  
High Strength ◽  
Biofilm Reactors ◽  
Treated Effluent ◽  
N Removal ◽  
Entire Experiment ◽  
Advanced Nitrogen Removal ◽  
Long Term Performance ◽  
Term Performance

Nitrogen (N) remains a great challenge in wastewater treatment while attempts to remove N has continuously been a research point for decades. In this study, the long-term performance of four identical-shape denitrification MBBRs (moving bed biofilm reactors) with four different configurations of cylindrical polyethylene as carriers (Φ25 × 12, Φ25 × 4, Φ15 × 15, and Φ10 × 7 mm) for advanced N removal of real reverse osmosis concentrate was investigated in great detail. The N of the real concentrate can be effectively removed by denitrification MBBRs when the pH, temperature, hydraulic retention time (HRT), C/N ratio, and filling rate are 7.50–8.10, 24~26 °C, 12 hours, 6.6, and 50%, respectively. The results showed that the MBBR with the Φ15 × 15 poly-carrier had the best removal efficiency on NO3-–N (78.0 ± 15.8%), NO2-–N (43.79 ± 9.30%), NH4+–N (55.56 ± 22.28%), and TN (68.9 ± 12.4%). The highest biomass of 2.13 mg/g-carrier was in the Φ15 × 15 poly-carrier was compared with the other three carriers, while the genes of the Φ15 × 15 poly-carrier reactor were also the most abundant. Proteobacteria was the most abundant phylum in the system followed by Bacteroidetes and then Firmicutes. The entire experiment with various parameter examination supported that Φ15 × 15 poly-carrier MBBR was a promising system for N removal in high strength concentrate. Despite the lab-scale trial, the successful treatment of high strength real reverse osmosis concentrate demonstrated the reality of the treated effluent as possible reclaimed water, thus providing a good showcase of N-rich reverse osmosis concentrate purification in practical application.

scholarly journals Technological Effectiveness of Sugar-Industry Effluent Methane Fermentation in a Fluidized Active Filling Reactor (FAF-R)

Energies ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 6626 ◽  
Author(s):  
Marcin Dębowski ◽  
Marcin Zieliński
Keyword(s):  
Production Efficiency ◽  
Sugar Industry ◽  
Removal Rate ◽  
Effluent Treatment ◽  
Organic Load ◽  
Methane Fermentation ◽  
Treated Effluent ◽  
Load Rate ◽  
Industry Effluent ◽  
The Impact

Technological solutions allowing the increase of the technological efficiency of anaerobic methods of wastewater treatment are still under investigation. The weaknesses of these solutions can be limited by the use of active fillings. The aim of the present study was to determine the impact of fluidized active filling on the effectiveness of anaerobic treatment of sugar-industry effluent, the production efficiency and the qualitative composition of the biogas produced. High, comparable (p = 0.05) effluent treatment results were observed at tested organic load rates between 4.0 and 6.0 kg COD (Chemical Oxygen Demand)/m3·d. The COD removal rate reached over 74%, biogas yields ranged from 356 ± 25 to 427 ± 14 dm3/kg CODremoved and the average methane contents were approximately 70%. A significant decrease in effluent treatment efficiency and methane fermentation was observed after increasing the organic load rate to 8.0 kg COD/m3·d, which correlated with decreased pH and FOS/TAC (volatile organic acid and buffer capacity ratio) increased to 0.44 ± 0.2. The use of fluidized active filling led to phosphorus removal with an efficiency ranged from 64.4 ± 2.4 to 81.2 ± 8.2% depending on the stage. Low concentration of total suspended solids in the treated effluent was also observed.

scholarly journals The efficiency of electrocoagulation using aluminum electrodesin treating wastewater from a dairy industry

2015 ◽  
Vol 45 (9) ◽  
pp. 1713-1719 ◽  
Author(s):  
Gerson de Freitas Silva Valente ◽  
Regina Célia Santos Mendonça ◽  
José Antônio Marques Pereira
Keyword(s):  
Current Density ◽  
Suspended Solids ◽  
Operating Cost ◽  
Dairy Industry ◽  
Optimum Operating ◽  
Optimum Operating Condition ◽  
Treated Effluent ◽  
Dairy Plant ◽  
Aluminum Electrodes ◽  
Industry Effluent

<p>This research deals with the investigation of electrocoagulation (EC) treatment of wastewater from a dairy plant using aluminum electrodes. Electrolysis time, pH, current density and distance between electrodes were considered to assess the removal efficiency of chemical oxygen demand (COD), total solids (TS) and their fractions and turbidity. Samples were collected from the effluent of a dairy plant using a sampling methodology proportional to the flow. The treatments were applied according to design factorial of half fraction with two levels of treatments and 3 repetitions at the central point. The optimization of parameters for treating dairy industry effluent by electrocoagulation using aluminum electrodes showed that electric current application for 21 minutes, an initial sample pH near 5.0 and a current density of 61.6A m<sup>-2</sup> resulted in a significant reduction in COD by 57%; removal of turbidity by 99%, removal of total suspended solids by 92% and volatile suspended solids by 97%; and a final treated effluent pH of approximately 10. Optimum operating condition was used for cost calculations show that operating cost is approximately 3.48R$ m<sup>-3</sup>.</p>

Chemical evaluation of some important varieties of onion (Allium cepa L.)

1980 ◽  
Vol 30 (2) ◽  
pp. 117-122 ◽  
Author(s):  
K. L. Bajaj ◽  
Gurdeep Kaur ◽  
Jarnail Singh ◽  
S. P. S. Gill
Keyword(s):  
Allium Cepa ◽  
Chemical Evaluation ◽  
Allium Cepa L

scholarly journals Phytoremediation of battery industry effluent through aquatic macrophytes

2020 ◽  
Vol 8 (1) ◽  
pp. 6
Author(s):  
Mahrine Rashid ◽  
Iftilkhar Ahmad ◽  
Ashique Muhammad ◽  
Mahmood Ul Hassan
Keyword(s):  
Eichhornia Crassipes ◽  
Aquatic Macrophytes ◽  
Industrial Effluent ◽  
Low Ph ◽  
Pistia Stratiotes ◽  
Lead Acid Battery ◽  
Pb Contamination ◽  
Wastewater Samples ◽  
Industry Effluent ◽  
Battery Industry

Research was conducted to quantify the level of copper (Cu), chromium (Cr), cadmium (Cd) and lead (Pb) contamination in battery industry effluent and to assess the remediation potential of three invasive aquatic macrophytes Eichhornia crassipes, Pistia stratiotes and Hydrocotyle umbellata by growing on industrial effluent collected from Lead acid Battery industry.The effluent was heavily contaminated with Pb (10mg/l) and sulphuric acid (pH 2- 2.1). Due to high Pb concentrations and low pH (2-2.2) the plants were unable to survive. Mortality rate of E. crassipes was 96 % while P. stratiotes and H. umbellata were 100% rotten. The experiment was repeated after adjusting the effluent pH to 7-7.5 to increase the plant life.Plant parts and wastewater samples were analyzed after every 3 days interval uptil 21st day. The amount of Cr, Cd and Cu in the effluent was 0.076 mg /L, 0.036 mg /L and 0.097 mg /L, which was in permissible limits of NEQs (1.0 mg/l, 0.1 mg/l and 1.0 mg/l) respectively. Pb was found 10 times higher i.e. 10 mg/l than the permissible limit 0.5 mg/l. E. crassipes removed Pb>Cr>Cu>Cd while P. stratiotes and H. umbellata reduced Cd, Cr, Cu more than Pb from the effluent. E. crassipes was most efficient Pb removing plant in 21 days of experiment.  

Sign in / Sign up

Export Citation Format

Share Document