Phosphate removal from food industry wastewater by chemical precipitation treatment with biocalcium eggshell

2021 ◽  
pp. 1-17
Author(s):  
Cristina Morales-Figueroa ◽  
Alejandra Teutli-Sequeira ◽  
Ivonne Linares-Hernández ◽  
Verónica Martínez-Miranda ◽  
Laura Garduño-Pineda ◽  
...  
Keyword(s):  
Food Industry ◽  
Chemical Precipitation ◽  
Phosphate Removal ◽  
Precipitation Treatment ◽  
Industry Wastewater

Biological Phosphorus Elimination Combined with Precipitation and Flocculation

1992 ◽  
Vol 25 (4-5) ◽  
pp. 219-224 ◽  
Author(s):  
T. Grünebaum ◽  
E. Dorgeloh
Keyword(s):  
Nutrient Removal ◽  
Suspended Solids ◽  
Chemical Precipitation ◽  
Phosphate Removal ◽  
Limit Values ◽  
Precipitation Treatment ◽  
Solids Concentration ◽  
Solid Liquid ◽  
Solid Liquid Separation ◽  
Biological Phosphorus

As interactions between chemical precipitation and biological wastewater treatment are well known, biological phosphate removal should be considered for advanced nutrient removal. A combination of biological phosphate removal and chemical precipitation treatment is sensible and economic, when the precipitation step is used for removal of residual amounts of phosphate. Improved biological phosphate removal and simultaneous precipitation both give increase in dry solids phosphate content. Assuming a concentration of 0.05 gP/gSS and an effluent suspended solids concentration of 20 mg/l the solids contribution accounts for a Ptot-discharge of 1 mgP/l wastewater. Efficient solid/liquid separation is therefore vital in achieving Ptot-limit values.

scholarly journals Phosphate and Ammonium Removal from Water through Electrochemical and Chemical Precipitation of Struvite

Processes ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 150
Author(s):  
Kyösti Rajaniemi ◽  
Tao Hu ◽  
Emma-Tuulia Nurmesniemi ◽  
Sari Tuomikoski ◽  
Ulla Lassi
Keyword(s):  
Energy Efficiency ◽  
Water Treatment ◽  
Chemical Precipitation ◽  
Phosphate Removal ◽  
Nutrient Recovery ◽  
Ammonium Removal ◽  
Synthetic Water

Batch electrocoagulation (BEC), continuous electrocoagulation (CEC), and chemical precipitation (CP) were compared in struvite (MgNH4PO4·6H2O) precipitation from synthetic and authentic water. In synthetic water treatment (SWT), struvite yield was in BEC 1.72, CEC 0.61, and CP 1.54 kg/m3. Corresponding values in authentic water treatment (AWT) were 2.55, 3.04, and 2.47 kg/m3. In SWT, 1 kg struvite costs in BEC, CEC, and CP were 0.55, 0.55, and 0.11 €, respectively, for AWT 0.35, 0.22 and 0.07 €. Phosphate removal in SWT was 93.6, 74.5, and 71.6% in BEC, CEC, and CP, respectively, the corresponding rates in AWT were 89.7, 77.8, and 74.4%. Ammonium removal for SWT in BEC, CEC, and CP were 79.4, 51.5, and 62.5%, respectively, rates in AWT 56.1, 64.1, and 60.9%. Efficiency in CEC and BEC are equal in nutrient recovery in SWT, although energy efficiency was better in CEC. CP is cheaper than BEC and CEC.

Phosphorus removal from aqueous solution using a novel granular material developed from building waste

2017 ◽  
Vol 75 (6) ◽  
pp. 1500-1511 ◽  
Author(s):  
Shengjiong Yang ◽  
Pengkang Jin ◽  
Xiaochang C. Wang ◽  
Qionghua Zhang ◽  
Xiaotian Chen
Keyword(s):  
Granular Material ◽  
Chemical Precipitation ◽  
Phosphate Removal ◽  
Precipitation Process ◽  
Order Kinetic ◽  
Solution Ph ◽  
Experimental Conditions ◽  
Removal Capacity ◽  
Order Kinetic Model ◽  
Pseudo Second Order

In this study, a granular material (GM) developed from building waste was used for phosphate removal from phosphorus-containing wastewater. Batch experiments were executed to investigate the phosphate removal capacity of this material. The mechanism of removal proved to be a chemical precipitation process. The characteristics of the material and resulting precipitates, the kinetics of the precipitation and Ca2+ liberation processes, and the effects of dosage and pH were investigated. The phosphate precipitation and Ca2+ liberation processes were both well described by a pseudo-second-order kinetic model. A maximum precipitation capacity of 0.51 ± 0.06 mg g−1 and a liberation capacity of 6.79 ± 0.77 mg g−1 were measured under the experimental conditions. The processes reached equilibrium in 60 min. The initial solution pH strongly affected phosphate removal under extreme conditions (pH <4 and pH >10). The precipitates comprised hydroxyapatite and brushite. This novel GM can be considered a promising material for phosphate removal from wastewater.

scholarly journals Effects of reactive filters based on modified zeolite in dairy industry wastewater treatment process

2013 ◽  
Vol 19 (4) ◽  
pp. 583-592 ◽  
Author(s):  
Srdjan Kolakovic ◽  
Dragoslav Stefanovic ◽  
Dragan Milicevic ◽  
Slavisa Trajkovic ◽  
Slobodan Milenkovic ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Food Industry ◽  
Treatment Process ◽  
Dairy Industry ◽  
Technological Parameters ◽  
Wastewater Treatment Process ◽  
High Level ◽  
Filtration Properties ◽  
Industry Wastewater

Application of adsorbents based on organo-zeolites has certain advantages over conventional methods applied in food industry wastewater treatment process. The case study presented in this paper examines the possibilities and effects of treatment of dairy industry wastewater by using adsorbents based on organo-zeolites. The obtained results indicate favorable filtration properties of organo-zeolite, their high level of adsorption of organic matter and nitrate nitrogen in the analyzed wastewater. This paper concludes with recommendations of optimal technical and technological parameters for the application of these filters in practice.

Treatment of food industry wastewater in sequencing batch reactors

1990 ◽  
Vol 11 (6) ◽  
pp. 499-508 ◽  
Author(s):  
Jan A. Oleszkiewicz ◽  
Stan Mateja ◽  
J. Eric Hutchison
Keyword(s):  
Food Industry ◽  
Batch Reactors ◽  
Sequencing Batch Reactors ◽  
Industry Wastewater
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