Research on the Performance of Poly-High-Ferric-Silicic Coagulant and Lead Wastewater Treatment

2011 ◽  
Vol 183-185 ◽  
pp. 1596-1599
Author(s):  
Juan Tan ◽  
Yan Zhen Yu ◽  
Yong Sun
Keyword(s):  
Wastewater Treatment ◽  
Fly Ash ◽  
Removal Efficiency ◽  
Treatment Effects ◽  
Potassium Ferrate ◽  
Jar Test ◽  
Flocculation Process

Ploy-high-ferric-silicic coagulant was prepared using the fly ash extract and potassium ferrate. The flocculation process of treatment lead wastewater by this coagulant with various Si/FeO42- ratios and salt-basicity at different pH and dosage were studied by jar test. The results showed that color, turbidity and Pb2+ removal efficiency are excellent and treatment effects are stable in treatment lead wastewater, especially the removal of Pb2+ has been up to 96% more. The comparison on coagulation between poly-high-ferric-silicic and other coagulants, the poly-high-ferric-silicic dosage is low and adapt to a wide PH. Therefore, by comparison, the poly-high-ferric-silicic is a superior coagulant in lead wastewater treatment.

scholarly journals A critical review on flocculants and flocculation

2019 ◽  
Vol 1 (1) ◽  
Author(s):  
Srijita Bharti
Keyword(s):  
Wastewater Treatment ◽  
Water Treatment ◽  
Critical Review ◽  
Wastewater Sample ◽  
Test Protocol ◽  
Chemical Alteration ◽  
Jar Test ◽  
Flocculation Process ◽  
Suspended Loads

The article critically reviews the applications of biopolymers in the area of water treatment. A number of biopolymers were reported for their flocculation behavior for treating the wastewater and making it suitable for various industrial as well as agricultural purposes via chemical alteration onto its backbone. Wastewater treatment was followed by flocculation process using standard ‘Jar test protocol’. Minute quantities of dosage were found be ideal to diminish the organic, biological and suspended loads from wastewater sample. The process of flocculation using biopolymers was also found economically suitable compared to other various processes applied in water treatment.

scholarly journals Evaluation of the Use of Fly Ash as a Low Cost Technology for Phosphorus Removal in Wastewater Treatment

2018 ◽  
Vol 13 (3) ◽  
pp. 1 ◽  
Author(s):  
Milena Emy Matsubara ◽  
Lúcia Helena Gomes Coelho
Keyword(s):  
Wastewater Treatment ◽  
Fly Ash ◽  
Removal Efficiency ◽  
Power Plants ◽  
Low Cost ◽  
Chemical Pollution ◽  
Synthetic Sample ◽  
Efficient Treatment ◽  
Pozzolanic Material ◽  
P Removal

“Pozzolan” is a slag from the burning of coal in power plants which has the potential to assist as a low-cost adsorbent for wastewater treatment. The excess of Phosphorus (P) in the environment can promote chemical pollution and harm ecosystems, especially water. It is therefore necessary to implement inexpensive techniques and processes for the efficient treatment of water and wastewater. In this context, this study evaluated the use of the pozzolanic fly ash material for P removal from wastewater for the development of low-cost treatment technologies for environmental restoration and remediation of water resources. The treatment systems were developed in batch configuration. The removal tests from a synthetic sample with a known concentration of P reached a maximum of 30% removal in concentration, even varying the pH and performing different treatments of the pozzolanic material. This low removal efficiency of Phosphorus led to a comparative test between different lots of pozzolan in order to verify if the results obtained were characteristic of the material itself or of the lot obtained. Also the P adsorption isotherms were constructed with the two lots achieving adsorption capacities from 0.87 mg g-1 to 74 mg g-1. This difference indicates that the low P removal efficiency in the preliminary tests is due to the characteristics of the substrate of the first lot. Tests on a real effluent using the pozzolan from the second sample lot indicated a 99% efficiency of P removal, with an initial concentration of Phosphorus in the effluent of 5.5 mg L-1.

Study of Coagulant Development and the Characteristics for the Treatment of Tire Remanufacturing Wastewater

2005 ◽  
Vol 277-279 ◽  
pp. 510-516
Author(s):  
Eun Sun Yoo ◽  
In Mo Yoon
Keyword(s):  
Wastewater Treatment ◽  
Removal Efficiency ◽  
Reaction Mechanisms ◽  
Combination Effect ◽  
Test Results ◽  
Recycling Industry ◽  
Jar Test ◽  
Coagulant Dosage ◽  
Polluted Wastewater

This study was conducted to test the performance of various combinations of coagulants for effective wastewater treatment of the tire recycling industry. From the Jar-test results, two kinds of coagulants, namely AlSi-1 and PASi-1, were found to be effective in decreasing BOD and CODCr values from the polluted wastewater among various combinations of coagulants. In comparison to Al-based or Si-based singular salts, the Si-Al combined salts (PASi-1) exhibited a higher removal efficiency of 90% turbidity, 93% SS, 70∼85% BOD5 and 85∼91% CODCr at 15± 2°C, pH7.5∼9.5 and 2.0mM of coagulant dosage. At 30±2°C of tire recycling effluents, the combination effect was clearly shown in the removal of CODCr over a wider range of pH. The reaction mechanisms of AlSi-1 and PASi-1 were also schematically studied.

scholarly journals New Materials Synthesized by Sulfuric Acid Attack Over Power Plant Fly Ash

2020 ◽  
Vol 71 (7) ◽  
pp. 48-58 ◽  
Author(s):  
Loredana Forminte (Litu) ◽  
Gabriela Ciobanu ◽  
Gabriela Buema ◽  
Nicoleta Lupu ◽  
Horia Chiriac ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Sulfuric Acid ◽  
Fly Ash ◽  
Acid Attack ◽  
Coagulant Dosage ◽  
Aluminum Iron ◽  
Sustainable Materials ◽  
Fast Settling ◽  
Synthesized Materials ◽  
Flocculation Process

In the current work, the preparation of a complex wastewater coagulant based on polymeric sulfates of aluminum/iron from fly ash is presented. The performance of the coagulation�flocculation process is mostly influenced by the coagulant type, which enhances the aggregation of particles and leads to formation of fast-settling flocs by charge neutralization or chain-bridging mechanisms. Within the preparation process, the reaction temperature was controlled at 80�C and 90�C for 4 h, the synthesized materials being characterized through different techniques (SEM, EDAX, FTIR, and XRD) and further used as coagulants for real wastewater treatment. As a novelty of this study, it can be mentioned that there were analyzed the possibilities of capitalization of Romanian fly ash collected from Iasi area and its transformation into complex based on aluminum - iron sulfates. Fly ash containing different concentrations of Fe2O3 and Al2O3 was successfully used in producing complex coagulants by reacting with 10% technical sulfuric acid solution. The produced complex coagulants contain both polymeric ferric sulfate (PFS) and polymeric aluminum sulfate (PAS) (demonstrated by complex characterization) and proved to be effective in wastewater treatment. These sustainable materials exhibited a good performance in coagulation�flocculation process (e.g. it was obtained a TSS removal efficiency of 84% at the coagulant dosage of 60 mg/L).

scholarly journals Industrial Wastewater Treatment in North Gas Company By Using Coagulation – Flocculation Process

2020 ◽  
Vol 10 (4) ◽  
pp. 252-269
Author(s):  
Sanarya K. Kamal ◽  
Awad E. Mohammed ◽  
Waleed M. Alabdraba ◽  
Hussein H. Hamed ◽  
Kamaran A. Waly
Keyword(s):  
Wastewater Treatment ◽  
Removal Efficiency ◽  
Industrial Wastewater ◽  
Oxygen Demand ◽  
Oil Refinery ◽  
Toxic Substances ◽  
Operational Parameters ◽  
Industrial Oil ◽  
Jar Test ◽  
Coagulation Process

Recently, water pollution considered a major problem that faced the human. Large quantities of water consume in various industrial oil refinery processes, where the wastewater discharged from these processes contains high organic, phosphate, ammonia, nitrite compounds, and toxic substances. Regarding that, making this resource a fresh is a major concern.  Furthermore, a great attention has been given for the removal of these contaminants discharged by Fenton process combined with coagulation process. Combined Fenton/Coagulation process was used and applied in this study as a novel wastewater treatment to remove Chemical Oxygen Demand (COD), Phosphate (PO4), Ammonia (NH3), Nitrite (NO3) compounds, and turbidity (NTU) from industrial wastewater in North Gas Company (NGC), Iraq. The industrial wastewater used in this study was characterized with 114 mg/L COD ,10.28 mg/L PO4, 4.123 mg/L NH3, 95.6 mg/L NO3, 98 NTU Turbidity. The main goal from this work was to evaluate the performance removal efficiency of combined Fenton/Coagulation process and examine the effect of various operational parameters such as Fenton’s dosages (H2O2, Fe2+), the concentration of coagulant (Alum) on the removal efficiency. The results obtained in this work revealed that maximum removal efficiency of COD, PO4, NH3, NO3, turbidity was 89.43%, 72.94 %, 91.065%, 90.96%, 89.85%, respectively was achieved using Fenton combined with coagulation process at 60 mg/L of Alum and 2.5 Fenton’s mole ratio. Overall it can be established that Combined Fenton/Coagulation process plays an important role in obtaining good results and had better removal efficiency. All the experiments were carried out using jar test apparatus at constant temperature (room temperature).

scholarly journals Removal Of Microplastics In The Industrial Wastewater Via The Fe-Based Coagulation Process

2020 ◽  
Vol 4 (1) ◽  
pp. first
Author(s):  
Ho Truong Nam Hai ◽  
Nguyen Tuyet Vy ◽  
Nguyen Thao Nguyen ◽  
To Thi Hien
Keyword(s):  
Wastewater Treatment ◽  
Removal Efficiency ◽  
Industrial Wastewater ◽  
Wastewater Treatment Plants ◽  
Water Environment ◽  
Domestic Wastewater ◽  
Industrial Park ◽  
Global Issue ◽  
Different Types ◽  
Flocculation Process

Currently, microplastics (MP) in the water environment is a global issue. Microplastics enter the natural environment through various sources such as domestic wastewater and industrial wastewater. The flocculation method - one of the simple and effective methods commonly used in wastewater treatment plants was used in this study to determine the removal efficiency of MPs in the industrial wastewater. The coagulation/flocculation experiments were carried on the Jartest model with the iron coagulant under different conditions. The wastewater was taken from the industrial park Song Than 1. The volume of the wastewater in each experiment was 500 mL with the MPs concentration of 78.4 mg/L which included 3 main forms with MP bead (322 different types / 0.5 L), MP fragment (131 different types / 0.5 L) and MP fiber (125 different types / 0.5 L). The optimal condition of microplastic removal (iron coagulant (FeCl3) = 600 mg/L, pH 8.6 – 8.8, settling time = 60 minutes, fast stirring of 300 rpm, slow stirring of 25 rpm, supporting-coagulant (CPAM) = 50 mg/L) was determined, corresponding with the MPs removal efficiency of 93.11% (MPs in effluent was 7.33 mg/L). The most common MPs categories collected after treatment were MP fragments (19 different types) and MP fibers (17 different types). MPs dimensions were mostly about 0.5 to 1 mm. Our result showed that the coagulation/flocculation process was an efficient method for the removal MPs in the industrial wastewater.

APPLICATION OF THE FLOCCULATION PROCESS IN THE INDUSTRIAL WASTEWATER TREATMENT

2016 ◽  
Vol 15 (3) ◽  
pp. 521-526
Author(s):  
Narcis Barsan ◽  
Mariana Turcu ◽  
Emilian Mo.negu.u ◽  
Mihaela Dascalu ◽  
Dana Chitimus ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Industrial Wastewater ◽  
Industrial Wastewater Treatment ◽  
Flocculation Process

Modelling the performance of anaerobic wastewater stabilization ponds

1995 ◽  
Vol 31 (12) ◽  
pp. 171-183 ◽  
Author(s):  
M. M. Saqqar ◽  
M. B. Pescod
Keyword(s):  
Wastewater Treatment ◽  
Water Temperature ◽  
Removal Efficiency ◽  
Wastewater Treatment Plant ◽  
Suspended Solids ◽  
Treatment Plant ◽  
Pond Water ◽  
Removal Efficiencies ◽  
Wastewater Stabilization Ponds ◽  
Raw Wastewater

The performance of the primary anaerobic pond at the Alsamra Wastewater Treatment Plant in Jordan was monitored over 48 months. Overall averages for the removal efficiencies of BOD5, COD and suspended solids were 53%, 53% and 74%, respectively. An improvement in removal efficiency with increase in pond water temperature was demonstrated. A model, which takes into account the variability of raw wastewater at different locations, has been developed to describe the performance of a primary anaerobic pond in terms of a settleability ratio for the raw wastewater. The model has been verified by illustrating the high correlation between actual and predicted pond performance.

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