New Class of Flocculants and Coagulants

2021 ◽  
pp. 219-252
Keyword(s):  
Wastewater Treatment ◽  
Industrial Wastewater ◽  
Low Cost ◽  
Treatment Method ◽  
Ease Of Use ◽  
Natural Polymers ◽  
Environmental Friendliness ◽  
Industrial Wastewater Treatment ◽  
New Class ◽  
Flocculation Efficiency

Coagulation is a kind of efficient water treatment method commonly used in domestic anhydrous and industrial wastewater treatment. Inorganic polymer coagulants (polyvalent metal salts) are widely used because of their low cost and ease of use. However, due to the low flocculation effectiveness and the presence of residual metal concentrations in the treated water, their application is limited. Organic synthetic flocculant has been widely used due to its higher flocculation efficiency at lower dosage. However, it has limitations in applicability due to its molecular structure which is less biodegradable and less disperse in water. Therefore, flocculants based on natural polymers have attracted extensive attention from researchers due to their advantages such as biodegradability and environmental friendliness. This paper summarizes the overview of the development of various types of flocculants that were used for industrial wastewater treatment. In addition, the characteristics and application of flocculant is reviewed with their behavior.

New Class of Flocculants and Coagulants

2021 ◽  
pp. 219-252
Keyword(s):  
Wastewater Treatment ◽  
Industrial Wastewater ◽  
Low Cost ◽  
Treatment Method ◽  
Ease Of Use ◽  
Natural Polymers ◽  
Environmental Friendliness ◽  
Industrial Wastewater Treatment ◽  
New Class ◽  
Flocculation Efficiency

Coagulation is a kind of efficient water treatment method commonly used in domestic anhydrous and industrial wastewater treatment. Inorganic polymer coagulants (polyvalent metal salts) are widely used because of their low cost and ease of use. However, due to the low flocculation effectiveness and the presence of residual metal concentrations in the treated water, their application is limited. Organic synthetic flocculant has been widely used due to its higher flocculation efficiency at lower dosage. However, it has limitations in applicability due to its molecular structure which is less biodegradable and less disperse in water. Therefore, flocculants based on natural polymers have attracted extensive attention from researchers due to their advantages such as biodegradability and environmental friendliness. This paper summarizes the overview of the development of various types of flocculants that were used for industrial wastewater treatment. In addition, the characteristics and application of flocculant is reviewed with their behavior.

Constructed Wetlands for Industrial Wastewater Treatment and Removal of Nutrients

2020 ◽  
pp. 559-587
Author(s):  
David de la Varga ◽  
Manuel Soto ◽  
Carlos Alberto Arias ◽  
Dion van Oirschot ◽  
Rene Kilian ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Constructed Wetlands ◽  
Nutrient Removal ◽  
Industrial Wastewater ◽  
Low Cost ◽  
Domestic Wastewater ◽  
Industrial Effluents ◽  
Industrial Wastewater Treatment ◽  
Sustainable Systems ◽  
Domestic Wastewater Treatment

Constructed Wetlands (CWs) are low-cost and sustainable systems for wastewater treatment. Traditionally they have been used for urban and domestic wastewater treatment, but in the last two decades, the applications for industrial wastewater treatment increased due to the evolution of the technology and the extended research on the field. Nowadays, CWs have been applied to the treatment of different kind of wastewaters as such as refinery and petrochemical industry effluents, food industry effluents including abattoir, dairy, meat, fruit and vegetables processing industries, distillery and winery effluents, pulp and paper, textile, tannery, aquaculture, steel and mixed industrial effluents. In this chapter, the authors present the main types of CWs, explain how they work and the expected performances, and describe the principal applications of CWs for industrial wastewater treatment with particular attention to suspended solids, organic matter and nutrient removal. A review of these applications as well as some case studies will be discussed.

Constructed Wetlands for Industrial Wastewater Treatment and Removal of Nutrients

2017 ◽  
pp. 202-230 ◽  
Author(s):  
David de la Varga ◽  
Manuel Soto ◽  
Carlos Alberto Arias ◽  
Dion van Oirschot ◽  
Rene Kilian ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Constructed Wetlands ◽  
Nutrient Removal ◽  
Industrial Wastewater ◽  
Low Cost ◽  
Domestic Wastewater ◽  
Industrial Effluents ◽  
Industrial Wastewater Treatment ◽  
Sustainable Systems ◽  
Domestic Wastewater Treatment

Constructed Wetlands (CWs) are low-cost and sustainable systems for wastewater treatment. Traditionally they have been used for urban and domestic wastewater treatment, but in the last two decades, the applications for industrial wastewater treatment increased due to the evolution of the technology and the extended research on the field. Nowadays, CWs have been applied to the treatment of different kind of wastewaters as such as refinery and petrochemical industry effluents, food industry effluents including abattoir, dairy, meat, fruit and vegetables processing industries, distillery and winery effluents, pulp and paper, textile, tannery, aquaculture, steel and mixed industrial effluents. In this chapter, the authors present the main types of CWs, explain how they work and the expected performances, and describe the principal applications of CWs for industrial wastewater treatment with particular attention to suspended solids, organic matter and nutrient removal. A review of these applications as well as some case studies will be discussed.

scholarly journals Cellulose-Based Hydrogels for Wastewater Treatment: A Concise Review

Gels ◽  
2021 ◽  
Vol 7 (1) ◽  
pp. 30
Author(s):  
Maimuna Akter ◽  
Maitry Bhattacharjee ◽  
Avik Kumar Dhar ◽  
Fahim Bin Abdur Rahman ◽  
Siddika Haque ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Wastewater Treatment ◽  
Adsorption Capacity ◽  
Low Cost ◽  
Three Dimensional ◽  
Treatment Method ◽  
Future Research ◽  
Natural Polymers ◽  
Adsorption Mechanisms ◽  
Metals Removal

Finding affordable and environment-friendly options to decontaminate wastewater generated with heavy metals and dyes to prevent the depletion of accessible freshwater resources is one of the indispensable challenges of the 21st century. Adsorption is yet to be the most effective and low-cost wastewater treatment method used for the removal of pollutants from wastewater, while naturally derived adsorbent materials have garnered tremendous attention. One promising example of such adsorbents is hydrogels (HGs), which constitute a three-dimensional polymeric network of hydrophilic groups that is highly capable of adsorbing a large quantity of metal ions and dyes from wastewater. Although HGs can also be prepared from synthetic polymers, natural polymers have improved environmental benignity. Recently, cellulose-based hydrogels (CBHs) have been extensively studied owing to their high abundance, biodegradability, non-toxicity, and excellent adsorption capacity. This review emphasizes different CBH adsorbents in the context of dyes and heavy metals removal from wastewater following diverse synthesis techniques and adsorption mechanisms. This study also summarizes various process parameters necessary to optimize adsorption capacity followed by future research directions.

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
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