Contemporary Developments in Waste Water Treatment Technologies

2021 ◽  
pp. 196-219
Author(s):  
Mohit Dev Awasthi ◽  
Mukesh Kumar Pandey ◽  
Trilok Chauhan ◽  
Mir Sayed Shah Danish ◽  
Dheeraj Kumar ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Emerging Contaminants ◽  
Waste Water Treatment ◽  
Nanocomposite Materials ◽  
Environment Friendly ◽  
Methods And Techniques ◽  
Nano Cellulose ◽  
Investment Capital ◽  
Treatment Technologies ◽  
Brighter Future

Water is the sole reason for the existence of life and prime nutrient to sustain it. So, it becomes extremely important to preserve wastewater to utilize it efficiently for various purposes. The methods and techniques that have the least investment capital, qualitative output, and environment-friendly content are desired. Such unaccustomed methods are our hope for a cleaner, safer, and brighter future. This chapter revolves around the methods employed to brawl the threats posed to the viability of water at earth from emerging contaminants and the efforts made by mankind to prevent it. Nanotechnology has potent attributes for water decontamination. Several nanotech-based devices, methods, and treatments have been used in recent times for wastewater treatment such as nanomembranes, nano photocatalysts, nano-cellulose, nano-absorbent, and nanocomposite materials. The chapter discusses these contemporary developments in nano-based technologies and the various advancements, which have been recently made in conventional techniques used for wastewater treatment technologies.

scholarly journals CONTEMPLATION OF SYMBIOTIC MICROBIAL BIOFILMS IN WASTEWATER TREATMENT

2021 ◽  
pp. 24-31
Author(s):  
JUHI SHARMA ◽  
PAWAN KUMAR JAIN ◽  
VAISHALI VISHWAKARMA ◽  
ANKITA SHRIVASTAVA
Keyword(s):  
Wastewater Treatment ◽  
Biofilm Formation ◽  
Distribution Systems ◽  
Waste Water Treatment ◽  
Treatment Strategies ◽  
Head Loss ◽  
Performance Effectiveness ◽  
Microbial Biofilms ◽  
Treatment Technologies ◽  
Choice Of Species

State of symbiosis is created among the species that are found in naturally existing biofilms. Biofilm formation provides protection against toxic shocks, mechanical stress, and predation. Biofilm can play an important role in wastewater treatment technologies and on the other hand could also lead to plague water. Biofilm-based treatments have been traditionally used for the treatment of water but the recent development in the stream has boosted the use of biofilm in various strategies of waste water treatment especially for strategies related to BOD and nutrients. However, the blueprint and execution of this idea is still being worked on due to the problems which arise in the implementation such as corroding pipes, increasing head loss, allowing pathogens to persist in distribution systems, and fouling membrane processes. Design for choice of species for biofilm processes in particular techniques is important wastewater treatment. All these data are essential to develop the performance, effectiveness and constancy of biofilm-based wastewater treatment strategies.

Application and Assessment of Different Decentralized Waste Water Treatment Technologies for a Hot-Dry Climate in Jordan for Reuse Purpose

2020 ◽  
Keyword(s):  
Wastewater Treatment ◽  
Energy Demand ◽  
Municipal Wastewater ◽  
Waste Water Treatment ◽  
Water Environment ◽  
Nitrification Rate ◽  
E Coli ◽  
Reuse Water ◽  
Treatment Technologies ◽  
The Cost

Jordan faces chronic water scarcity due to the very limited water resources and increasing water demand. Also increasing the energy cost of wastewater treatment raises the need to think about Sustainable Energy-Water-Environment Nexus in a dry climate. Moreover, wastewater treatment near to the generation place and reuse it at the same points is needed for decreases energy demand, save the cost and protect the environment. However, the innovations in decentralized wastewater technologies in Jordan aiming not only to treat the municipal wastewater but also to reuse water, energy, and nutrient again. Lab-analysis shows extremely high treatment efficiency that can be achieved by studied technologies to reduce BOD5 to 98.8%, COD to 96.5% and achievement high nitrification rate and good reduction of the parameters TSS, NO3, TN, and E. coli, to meet the Jordanian Standards for reuse.

scholarly journals Innovative Approaches for Drinking- and Waste-Water Treatment: An Editorial Review Summarizing and Assessing the Findings of the Special Issue

2021 ◽  
Vol 11 (5) ◽  
pp. 2063
Author(s):  
Ioannis A. Katsoyiannis ◽  
Vincenzo Torretta
Keyword(s):  
Wastewater Treatment ◽  
Waste Water Treatment ◽  
Special Issue ◽  
Treatment Optimization ◽  
Water And Wastewater Treatment ◽  
Treatment Technologies ◽  
Water And Wastewater ◽  
Editorial Review ◽  
Membrane Treatment ◽  
Innovative Approaches

The present special issue collected articles that address the very important topic of innovative approaches in water and wastewater treatment technologies. Thirteen articles are published, ten research paper and three review articles. The papers can be divided in four major categories, namely, membrane treatment, adsorption studies, advanced oxidation processes and wastewater treatment optimization. In the editorial, a brief description of the findings of each paper is presented along with a critical assessment.

Advancing Canadian Wastewater Assets (ACWA) bridges laboratory-scale testing of wastewater technologies and effects on receiving environments

2020 ◽  
Vol 47 (8) ◽  
pp. 998-1004
Author(s):  
Leland J. Jackson
Keyword(s):  
Wastewater Treatment ◽  
Policy Development ◽  
Emerging Contaminants ◽  
Treatment Plant ◽  
Physical Modelling ◽  
Environment Effects ◽  
Treatment Technologies ◽  
Temporal And Spatial ◽  
Technology Benefits ◽  
Receiving Environments

Laboratory assessments of organism responses to wastewater are inexpensive, easily replicated, and offer control and precision, yet are often so reduced in temporal and spatial scale that results are difficult to apply to receiving environments. Whole-system experiments are expensive, lack true replication, and can be logistically challenging, yet offer the best insight as to how ecosystems will respond to effluent inputs. Advancing Canadian Wastewater Assets (ACWA), which includes a wastewater treatment plant, analytical labs, and research streams, provides unique infrastructure to test new wastewater treatment technologies, demonstrate technology benefits by direct analytical chemistry, and determine receiving environment effects. The ability to measure temperature, conservative ions, and dissolved oxygen in 12 replicated, naturalized streams allows physical modelling and biological monitoring consistent with larger, natural rivers. Assessments of receiving environment data could guide policy development for safe discharge of emerging contaminants and develop strategies to reduce development and persistence of antimicrobial resistance.

DESIGN PLANNING WASTEWATER TREATMENT PLANT OF NATA DE COCO INDUSTRY WITH THE ACTIVATED SLUDGE PROCESS

2016 ◽  
Vol 9 (2) ◽  
Author(s):  
Dinda Rita K. Hartaja ◽  
Imam Setiadi
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Activated Sludge ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Appropriate Technology ◽  
Waste Water Treatment Plant ◽  
Activated Sludge Process ◽  
High Level

Generally, wastewater of nata de coco industry contains suspended solids and COD were high, ranging from 90,000 mg / l. The high level of of the wastewater pollutants, resulting in nata de coco industry can not be directly disposed of its wastewater into the environment agency. Appropriate technology required in order to process the waste water so that the treated water can meet the environmental quality standards that are allowed. Designing the waste water treatment plant that is suitable and efficient for treating industrial wastewater nata de coco is the activated sludge process. Wastewater treatment using activated sludge process of conventional (standard) generally consists of initial sedimentation, aeration and final sedimentation.Keywords : Activated Sludge, Design, IPAL

Review of Wastewater Treatment Technologies for Application in Communities in the Amazonian Varzea

2011 ◽  
Vol 7 (1) ◽  
pp. 59-69 ◽  
Author(s):  
João Paulo Borges Pedro ◽  
Maria Cecília Rosinski Lima Gomes ◽  
Ana Claudeíse Silva do Nascimento
Keyword(s):  
Wastewater Treatment ◽  
Treatment Technologies

Biofilm Structure – An Important and Neglected Parameter in Waste Water Treatment

1989 ◽  
Vol 21 (8-9) ◽  
pp. 805-814 ◽  
Author(s):  
F. R. Christensen ◽  
G. Holm Kristensen ◽  
J. la Cour Jansen
Keyword(s):  
Wastewater Treatment ◽  
Structural Changes ◽  
Waste Water Treatment ◽  
Experimental Investigations ◽  
Biofilm Reactors ◽  
Substrate Removal ◽  
Treatment Processes ◽  
Laboratory Reactor ◽  
Biofilm Structure ◽  
Kinetics Of

Experimental investigations on the kinetics of wastewater treatment processes in biofilms were performed in a laboratory reactor. Parallel with the kinetic experiments, the influence of the biofilm kinetics on the biofilm structure was studied at macroscopic and microscopic levels. The close interrelationship between biofilm kinetics and structural changes caused by the kinetics is illustrated by several examples. From the study, it is evident that the traditional modelling of wastewater treatment processes in biofilm reactors based on substrate removal kinetics alone will fail in many cases, due to the inevitable changes in the biofilm structure not taken into consideration. Therefore design rules for substrate removal in biofilms used for wastewater treatment must include correlations between the removal kinetics and the structure and development of the biological film.

Use of chemical upgrading (CU) in Hungary and Slovakia

1994 ◽  
Vol 30 (5) ◽  
pp. 87-95 ◽  
Author(s):  
Susan E. Murcott ◽  
Donald R. F. Harleman
Keyword(s):  
Wastewater Treatment ◽  
Biological Treatment ◽  
Treatment Plant ◽  
Domestic Sewage ◽  
Metal Salts ◽  
Plant Performance ◽  
Eastern European ◽  
Low Doses ◽  
The Past ◽  
Treatment Technologies

In the past decade, the development of polymers and new chemical technologies has opened the way to using low doses of chemicals in wastewater treatment. “Chemical upgrading” (CU) is defined in this paper as an application of these chemical technologies to upgrade overloaded treatment systems (typically consisting of conventional primary plus biological treatment) in Central and Eastern European (CEE) countries. Although some of the chemical treatment technologies are proven ones in North America, Scandinavia, and Germany, a host of factors, for example, the variations in composition and degree of pollution, the type of technologies in use, the type and mix of industrial and domestic sewage, and the amount of surface water, had meant that the viability of using CU in CEE countries was unknown. This report describes the first jar tests of CU conducted during the summer of 1993. The experiments show CU's ability to improve wastewater treatment plant performance and to potentially assist in the significant problem of overloaded treatment plants. Increased removal of BOD, TSS, and P in the primary stage of treatment is obtained at overflow rates above 1.5 m/h, using reasonably priced, local sources of metal salts in concentrations of 25 to 50 mg/l without polymers.

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