Phosphate removal during Fe(II) oxidation in the presence of Cu(II): Characteristics and application for electro-plating wastewater treatment

2014 ◽  
Vol 132 ◽  
pp. 388-395 ◽  
Author(s):  
Ting Li ◽  
Hongjie Wang ◽  
Wenyi Dong ◽  
Tongzhou Liu ◽  
Feng Ouyang ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Phosphate Removal ◽  
Plating Wastewater

Operational Results of the Wolfsburg Wastewater Treatment Plant

1992 ◽  
Vol 25 (4-5) ◽  
pp. 203-209 ◽  
Author(s):  
R. Kayser ◽  
G. Stobbe ◽  
M. Werner
Keyword(s):  
Wastewater Treatment ◽  
Activated Sludge ◽  
Nitrogen Content ◽  
Total Nitrogen ◽  
Nitrogen Removal ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Phosphate Removal ◽  
Total Nitrogen Content ◽  
Activated Sludge Process

At Wolfsburg for a load of 100,000 p.e., the step-feed activated sludge process for nitrogen removal is successfully in operation. Due to the high denitrification potential (BOD:TKN = 5:1) the effluent total nitrogen content can be kept below 10 mg l−1 N; furthermore by some enhanced biological phosphate removal about 80% phosphorus may be removed without any chemicals.

scholarly journals “Candidatus Dechloromonas phosphoritropha” and “Ca. D. phosphorivorans”, novel polyphosphate accumulating organisms abundant in wastewater treatment systems

2021 ◽  
Author(s):  
Francesca Petriglieri ◽  
Caitlin Singleton ◽  
Miriam Peces ◽  
Jette F. Petersen ◽  
Marta Nierychlo ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Niche Partitioning ◽  
16S Rrna Gene Sequencing ◽  
Abundant Species ◽  
Phosphate Removal ◽  
Rrna Gene ◽  
Biological Phosphorus Removal ◽  
Polyphosphate Accumulating Organisms

AbstractMembers of the genus Dechloromonas are often abundant in enhanced biological phosphorus removal (EBPR) systems and are recognized putative polyphosphate accumulating organisms (PAOs), but their role in phosphate removal is still unclear. Here, we used 16S rRNA gene sequencing and fluorescence in situ hybridization (FISH) to investigate the abundance and distribution of Dechloromonas spp. in Danish and global wastewater treatment plants. The two most abundant species worldwide revealed in situ dynamics of important intracellular storage polymers, measured by FISH-Raman in activated sludge from four full-scale EBPR plants and from a lab-scale reactor fed with different substrates. Moreover, seven distinct Dechloromonas species were determined from a set of ten high-quality metagenome-assembled genomes (MAGs) from Danish EBPR plants, each encoding the potential for polyphosphate (poly-P), glycogen, and polyhydroxyalkanoates (PHA) accumulation. The two species exhibited an in situ phenotype in complete accordance with the metabolic information retrieved by the MAGs, with dynamic levels of poly-P, glycogen, and PHA during feast-famine anaerobic–aerobic cycling, legitimately placing these microorganisms among the important PAOs. They are potentially involved in denitrification showing niche partitioning within the genus and with other important PAOs. As no isolates are available for the two species, we propose the names Candidatus Dechloromonas phosphoritropha and Candidatus Dechloromonas phosphorivorans.

Coagulation with Prepolymerized Aluminium Salts and their Influence on Particle and Phosphate Removal

1992 ◽  
Vol 26 (5-6) ◽  
pp. 1229-1237 ◽  
Author(s):  
H. Ratnaweera ◽  
H. Ødegaard ◽  
J. Fettig
Keyword(s):  
Wastewater Treatment ◽  
Electrophoretic Mobility ◽  
Phosphate Removal ◽  
Particle Removal ◽  
Initial Formation ◽  
Dominant Mechanism ◽  
Charge Neutralization ◽  
Phosphate Ions ◽  
Hydroxo Complexes ◽  
Hydrolysis Products

Based on coagulation experiments, electrophoretic mobility measurements, and literature studies, mechanisms for particle and phosphate removal during coagulation with coagulants of different basicities are discussed. In wastewater treatment, particles are expected to be removed by both the adsorption -charge neutralization and sweep floc mechanisms. However, when coagulating with low basicity coagulants, the dominant mechanism for particle removal is suggested to be the sweep floc mechanism, while the dominant mechanism for phosphate removal is adsorption-precipitation by initial formation of aluminium - hydroxo -complexes. When coagulants with high basicities are used, the particles are removed dominantly by the adsorption - charge neutralization mechanism, while phosphate removal will be favoured by adsorption of phosphate ions on to the hydrolysis products.

scholarly journals Phosphate removal by mineral-based sorbents used in filters for small-scale wastewater treatment

2008 ◽  
Vol 42 (1-2) ◽  
pp. 189-197 ◽  
Author(s):  
Jon Petter Gustafsson ◽  
Agnieszka Renman ◽  
Gunno Renman ◽  
Katarina Poll
Keyword(s):  
Wastewater Treatment ◽  
Phosphate Removal ◽  
Small Scale

The Aeration Time Influence on the Brewery Wastewater Treatment in SBR

2011 ◽  
Vol 183-185 ◽  
pp. 1200-1203
Author(s):  
Jun Sheng Li ◽  
Zhi Wei Zhao ◽  
Jin Long Zuo
Keyword(s):  
Wastewater Treatment ◽  
Removal Efficiency ◽  
Removal Rate ◽  
Phosphate Removal ◽  
Experimental Result ◽  
Brewery Wastewater ◽  
Aeration Time

The effect s of aeration time on the treatment of brewery wastewater in SBR reactor were investigated by using synthetic brewery wastewater. The experimental result indicates that under the condition of influent COD is 300～650mg/L, the temperature is 25°C, continual aerations is 2.5 h and sludge density is 2000～3000 mg/L, the reactor has a good degeneration ability of COD and NH4+-N in simulation brewery wastewater，removal rate can reached 90 % or more，phosphate removal efficiency was above 70%. so the SBR technology is feasible．

scholarly journals ADSORPTION PURIFICATION OF LIQUID WASTE FROM PHOSPHATES AND RESINOUS SUBSTANCES USING NATURAL ADSORBENT BASED ON SUNFLOWER BEADS

2021 ◽  
Vol 2 (37) ◽  
pp. 100-108
Author(s):  
A. Ivanchenko ◽  
A. Savenkov ◽  
D. Yelatontsev ◽  
Y. Maksymchuk
Keyword(s):  
Wastewater Treatment ◽  
Raw Materials ◽  
Liquid Waste ◽  
Research Direction ◽  
Phosphate Removal ◽  
Technological Parameters ◽  
Adsorption Parameters ◽  
Technical Literature ◽  
Kinetics Of Adsorption ◽  
Natural Adsorbent

Among the physicochemical methods of deep extraction of pollutants from wastewater, adsorption is of great interest. Prospects for the use of sorbents from natural raw materials in wastewater treatment technologies based on a critical analysis of the technical literature are shown, the choice of research direction is substantiated. The use of natural adsorbent based on sunflower husk in the technology of wastewater treatment from phosphates and resinous substances at high content to minimize their anthropogenic impact on the environment is scientifically substantiated. The kinetics of adsorption of phosphates and resinous substances has been studied, the optimal parameters of adsorption purification have been established, and adsorption isotherms have been obtained. The theory of monomolecular adsorption (Langmuir and Freundlich equations) was used to characterize the sorbent based on sunflower husk and calculate the adsorption parameters. Experimental data on the degree of extraction of phosphates and resinous substances from wastewater using a natural adsorbent based on sunflower husk were obtained, and its specific surface area (200.06 m2/g) was experimentally determined. It was found that the highest efficiency of phosphate removal at the initial content of 21.25 mg/dm3 to 8.75 mg/dm3 from municipal liquid waste is achieved by adding an adsorbent in the amount of 10 g/dm3. With such technological parameters, the degree of waste treatment reaches 59.3%. At the increased concentration of resinous substances of 775 mg/dm3 at a dose of adsorbent of 1.5 g/dm3 duration of adsorption of 40 minutes their maintenance decreased to an extremely safe indicator (less than 25 mg/dm3). and implement them in urban and industrial treatment plants.

scholarly journals Adsorptive Removal of Phosphate From Wastewater Using Ethiopian Rift Pumice: Batch Experiment

2020 ◽  
Vol 13 ◽  
pp. 117862212096965
Author(s):  
Yohannis Fetene ◽  
Taffere Addis
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Low Cost ◽  
Phosphate Removal ◽  
Phosphate Adsorption ◽  
Phosphate Solution ◽  
Order Kinetic ◽  
Tertiary Treatment ◽  
Treatment Unit ◽  
Column Adsorption

Phosphorous from municipal and industrial wastewater is the main cause of eutrophication of rivers and lakes, because effluent quality from conventional secondary wastewater treatment plants does not meet the discharge standard that demands further treatment. Therefore, we investigated pumice as a potential low-cost adsorbent for the tertiary treatment of phosphate from municipal wastewater. The phosphate adsorption process reached equilibrium after 60 minutes contact time and achieved a removal efficiency of 94.4% ± 0.7% for an adsorbent dose of 10 g/L in 3 mg/L phosphate solution. The highest phosphate removal was recorded at pH 7. The experimental data best fitted with the Redlich-Peterson isotherm and the pseudo-second-order kinetic models. The coexisting anions decreased phosphate adsorption in the order of mixture >SO42– > HCO3− > NO3− > Cl− > CO3−. Pumice removed 95% ± 0.2% of phosphate from effluents of the secondary treatment unit of a municipal wastewater treatment plant. Furthermore, effective regeneration of saturated pumice was possible with a 0.2 M NaOH solution. Therefore, pumice could be a technically workable low-cost reusable adsorbent for phosphate removal from wastewater as a tertiary treatment to curb eutrophication of surface waters. However, further column adsorption study is recommended for a continuous flow system to optimize process design variables and scale up for field applications.

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