Mechanisms during suspended solids and phosphate concentration variations in wastewater coagulation process

2016 ◽  
Vol 37 (19) ◽  
pp. 2405-2413 ◽  
Author(s):  
Lelum Duminda Manamperuma ◽  
Harsha Chandima Ratnaweera ◽  
A. Martsul
Keyword(s):  
Suspended Solids ◽  
Phosphate Concentration ◽  
Coagulation Process

Treatment of road runoff by coagulation/flocculation and sedimentation

2019 ◽  
Vol 79 (3) ◽  
pp. 518-525 ◽  
Author(s):  
F. Nyström ◽  
K. Nordqvist ◽  
I. Herrmann ◽  
A. Hedström ◽  
M. Viklander
Keyword(s):  
Laboratory Investigation ◽  
Treatment Effect ◽  
Metal Content ◽  
Suspended Solids ◽  
Metal Reduction ◽  
Stormwater Treatment ◽  
Road Runoff ◽  
Coagulation Process ◽  
Before And After ◽  
Rain Events

Abstract A laboratory investigation of the treatment potential of a coagulation process in the context of stormwater treatment was undertaken. The initial 25 L road runoff generated from four rain events was collected and subjected to a jar-testing regime with two commercial coagulants. The treatment effect was assessed by analysing the runoff before and after treatment for turbidity, suspended solids and metal content. The coagulation process resulted in particle and total metal reduction of more than 90% compared to 40% for only sedimentation. Up to 40% reduction of dissolved Cr, Cu and Pb was also observed compared to 0% for sedimentation. This study shows that coagulation may be a useful process for stormwater treatment systems when the treatment requirements are high.

Polyacrylamide-induced coagulation process removing suspended solids from palm oil mill effluent

2017 ◽  
Vol 52 (3) ◽  
pp. 520-527 ◽  
Author(s):  
Ali Akbar Zinatizadeh ◽  
Shaliza Ibrahim ◽  
Nasrin Aghamohammadi ◽  
Abdul Rahman Mohamed ◽  
Hadis Zangeneh ◽  
...  
Keyword(s):  
Palm Oil ◽  
Suspended Solids ◽  
Palm Oil Mill Effluent ◽  
Coagulation Process ◽  
Palm Oil Mill

scholarly journals Removal of Color, Suspended Solids, COD and Ammonia from Partially Stabilize Landfill Leachate by Using Iron Chloride through Coagulation Process

2013 ◽  
pp. 736-739 ◽  
Author(s):  
Nur Shaylinda Mohd Zin ◽  
Hamidi Abdul Aziz ◽  
Nordin Mohd Adlan ◽  
Azlan Ariffin ◽  
Mohd Suffian Mohd Suffian ◽  
...  
Keyword(s):  
Landfill Leachate ◽  
Suspended Solids ◽  
Iron Chloride ◽  
Coagulation Process

scholarly journals The removal of fats, oils and grease (FOG) from food industry wastewater by magnetic coagulation

2021 ◽  
Author(s):  
Bahareh Bavar
Keyword(s):  
Magnetic Field ◽  
Food Industry ◽  
Suspended Solids ◽  
Sewage Treatment ◽  
Oxygen Demand ◽  
Magnetic Powder ◽  
Jar Test ◽  
Coagulation Process ◽  
Excess Amount ◽  
Oils And Grease

Wastewater containing fats, oils and grease (FOG) is problematic in several ways: foul odors, blockage of sewer lines, interference with the proper sewage treatment operation and excess amount of FOG that can lead to certain fines for responsible wastewater generator. In this paper, the magnetic coagulation process is used to destabilize the oily wastewater emulsions while assisting with the oil floc formation. The oil/magnetic powder flocs were subsequently deposited and removed with the assistance of magnetic field. Preliminary investigations were devoted to calculations of optimal magnetic field. Preliminary investigations were devoted to calculations of optimal magnetic powder proportions were devoted to calculations of optimal magnetic powder proportions of various sizes and their oil sorption capacity. The results from the jar test confirmed the effectiveness of the magnetic coagulation procedure. It was demonstrated that the magnetic coagulation process with optimum amount of magnetic powder of 12 g/L could remove 94.2% of FOG, 96.9% of total suspended solids (TSS), and 86.7% of chemical oxygen demand (COD) on average.

scholarly journals Removal of Dyes by Aqueous Mixed Coagulants

2005 ◽  
Vol 5 (1) ◽  
pp. 52
Author(s):  
Peik Yin Ooi ◽  
Tjoon Tow Teng ◽  
A. K. Mohd Omar ◽  
N. A. R. Nik Norulaini
Keyword(s):  
Textile Industry ◽  
Suspended Solids ◽  
Treatment Plant ◽  
Reactive Dye ◽  
Settling Time ◽  
Color Removal ◽  
Jar Test ◽  
Coagulation Process ◽  
Coagulant Dosage ◽  
Coloring Matter

Alum, MgCl2, and mixtures of alum and MgCl2 have been used as coagulant to remove coloring matter in the reactive dye Levafix Brill Blue EBRA. The jar test was used to determine the effectiveness and the optimal condition of the coagulation process in terms of pH of the coagulation process, coagulant dosage, percentage color removal, and floc settling time. Coagulant dosages of 1,000-5,000 ppm were studied. The treatment of textile industry wastewater was done in the treatment plant of a printing mill. The results showed that coagulation by MgCl2 and alum occurs at the removal pH ranges of 10.5-11.0 for MgCl2 and 4.0-6.0 for alum. The mixtures of MgCl2 and alum gave two distinct effective color-removal zones at pH 4-5.5 and pH 8-9.5. The addition of alum to MgCl2 shifted the optimal pH of MgCl2 from 10.5-11. 0 to 8. 0-9.5. The alum dose of 1,000-3,000 ppm in the coagulant mixture increased by 10-25 % the color removal in the alkaline zone. Floc settling time was found to (a) increase with coagulant dose and (b) take longer in the acidic color-removal zone than in the alkaline zone. The presence of alum increased the floc settling time in the alkaline zone. The study done at the treatment plant of a printing mill showed similar results. A mixture of 60% MgClz and 40% alum at an average dosage of 2,800 ppm gave a color removal of 97% and reductions of 88% for COD and 69% for suspended solids. Keywords: Chemical coagulation, color reduction, mixed coagulants, and textile waste.

scholarly journals Reduction of Total Suspended Solids, Turbidity and Colour of Palm Oil Mill Effluent using Hybrid Coagulation-Fltrafiltration Process

2018 ◽  
Vol 23 (1) ◽  
Author(s):  
W. Q. Ng ◽  
S. O. Lai ◽  
K. C. Chong ◽  
S. S. Lee ◽  
C. H. Koo ◽  
...  
Keyword(s):  
Palm Oil ◽  
Suspended Solids ◽  
Pure Water ◽  
Total Suspended Solids ◽  
Palm Oil Mill Effluent ◽  
Transmembrane Pressure ◽  
Permeate Flux ◽  
Coagulation Process ◽  
Palm Oil Mill ◽  
Uf Membranes

High consumption and production of palm oil have led to the massive generation of palm oil mill effluent (POME). This study was intended to reduce the total suspended solids (TSS), turbidity and colour using hybrid coagulation-ultrafiltration process. POME was pre-treated with coagulation process using polyaluminium chloride (PAC) and optimization of operating condition for coagulation process was performed. The coagulation results revealed that optimum pH, dosage of coagulant and rapid mixing speed were pH 4, 600 mg/L and 200 rpm, respectively. It achieved the highest percent reduction of TSS, turbidity and colour with 99.74%, 94.44% and 94.60%, respectively. Ultrafiltration (UF) membrane was fabricated using polyethersulfone (PES), polyvinylpyrrolidone (PVP) and titanium dioxide (TiO2­) nanoparticle. Different concentrations ranging from zero and 1.0 wt% of TiO2 nanoparticles were added into the dope solution. The characterization studies of UF membranes confirmed that higher concentration of TiO2 provided higher pure water permeability and more porous structure in the UF membranes. The amount of TiO2 in membrane only affected the permeate flux but had no obvious effects on the reduction of TSS, turbidity and colour. The optimum transmembrane pressure was found to be 3 bar, resulting in the greatest reduction of TSS, turbidity and colour.

scholarly journals Computer Simulation of Chemical Coagulation and Sedimentation of Suspended Solids

2018 ◽  
Vol 25 (1) ◽  
pp. 123-131
Author(s):  
Regina Wardzyńska ◽  
Lech Smoczyński ◽  
Beata Załęska-Chróst
Keyword(s):  
Integral Equation ◽  
System Performance ◽  
Cluster Model ◽  
Suspended Solids ◽  
Order Reaction ◽  
Second Order Reaction ◽  
Particle Cluster ◽  
Coagulation Rate ◽  
First Order ◽  
Coagulation Process

AbstractThe computer program ZB2 was used to study simulated coagulation rate for the system containing spherical sol particles and spherical coagulant particles. The system performance was verified to the particle-cluster model of a fast and perikinetic coagulation process that fulfils Smoluchowski and/or Muller equations. The rate of the coagulation process satisfied both the kinetic equation of a first-order reaction and a second-order reaction. However, chosen concepts and models in the theory of bidispersive sol coagulation have been negatively verified. Also, attempts have been made to modify the Muller integral equation for selected boundary conditions.

scholarly journals The removal of fats, oils and grease (FOG) from food industry wastewater by magnetic coagulation

2021 ◽  
Author(s):  
Bahareh Bavar
Keyword(s):  
Magnetic Field ◽  
Food Industry ◽  
Suspended Solids ◽  
Sewage Treatment ◽  
Oxygen Demand ◽  
Magnetic Powder ◽  
Jar Test ◽  
Coagulation Process ◽  
Excess Amount ◽  
Oils And Grease

Wastewater containing fats, oils and grease (FOG) is problematic in several ways: foul odors, blockage of sewer lines, interference with the proper sewage treatment operation and excess amount of FOG that can lead to certain fines for responsible wastewater generator. In this paper, the magnetic coagulation process is used to destabilize the oily wastewater emulsions while assisting with the oil floc formation. The oil/magnetic powder flocs were subsequently deposited and removed with the assistance of magnetic field. Preliminary investigations were devoted to calculations of optimal magnetic field. Preliminary investigations were devoted to calculations of optimal magnetic powder proportions were devoted to calculations of optimal magnetic powder proportions of various sizes and their oil sorption capacity. The results from the jar test confirmed the effectiveness of the magnetic coagulation procedure. It was demonstrated that the magnetic coagulation process with optimum amount of magnetic powder of 12 g/L could remove 94.2% of FOG, 96.9% of total suspended solids (TSS), and 86.7% of chemical oxygen demand (COD) on average.

PHYSICO-CHEMICAL ASPECTS OF YAMUNA RIVER AT GOKUL BARRAGE, MATHURA (UP) INDIA

2017 ◽  
Vol 23 (2) ◽  
Author(s):  
AJAY KUMAR RAJAWAT ◽  
PRAVEEN KUMAR
Keyword(s):  
Water Samples ◽  
Suspended Solids ◽  
Total Dissolved Solids ◽  
Tolerance Limit ◽  
Chemical Condition ◽  
Yamuna River ◽  
Dissolved Solids ◽  
Time Period ◽  
Physico Chemical ◽  
Almost All

An attempt has been made to study the Physico-chemical condition of water of Yamuna River at Gokul Barrage, Mathura, (UP). The time period of study was July 2015 to June 2016. Three water samples were selected from different sites in each month for study. The parameters studied were Temperature, Turbidity, pH, DO, BOD, COD, Total Dissolved Solids and Suspended Solids. Almost all the parameters were found above the tolerance limit.

Sign in / Sign up

Export Citation Format

Share Document