Conditioning, thickening, and dewatering: research update/research needs

2001 ◽  
Vol 44 (10) ◽  
pp. 9-18 ◽  
Author(s):  
S. K. Dentel
Keyword(s):  
Wastewater Treatment ◽  
Research Needs ◽  
Paper Briefly ◽  
Current Technology ◽  
Secondary Interactions ◽  
Beneficial Reuse ◽  
Technology Trends

The production of sludges that are amenable to beneficial reuse (and thereby merit the term “biosolids”) has become a high priority concern in wastewater treatment. Regulations in many countries have become stringent in this regard, and the production of suitable biosolids now influences the selection, design, and operation of upstream processes. Among these are the conditioning, thickening, and dewatering of sludges. This paper briefly reviews current technology trends in these process areas, placing them in the context of overall needs for improved biosolids management. It is foreseen that conditioning, thickening and dewatering processes will need to operate at higher performance and reliability levels to maintain disposal and reuse flexibility. The chemistry of conditioning must be more clearly determined since secondary interactions of the conditioning additives may be important in ways that are not currently recognized.

Synchronizing With The Current Technology Trends

2005 ◽  
Vol 2 (1) ◽  
pp. 18-19
Author(s):  
Sanjay Gupta ◽  
◽  
Archana Gupta ◽  
Keyword(s):  
Current Technology ◽  
Technology Trends

Adding realism to simulated sensors and actuators

2008 ◽  
Vol 57 (3) ◽  
pp. 337-344 ◽  
Author(s):  
C. Rosen ◽  
L. Rieger ◽  
U. Jeppsson ◽  
P. A. Vanrolleghem
Keyword(s):  
Wastewater Treatment ◽  
Markov Chains ◽  
Control Strategy ◽  
Strategy Development ◽  
Actuator Faults ◽  
Paper Briefly ◽  
Sensors And Actuators ◽  
Dynamic Simulations ◽  
Actuator Dynamics ◽  
Significant Obstacle

In this paper, we propose a statistical theoretical framework for incorporation of sensor and actuator faults in dynamic simulations of wastewater treatment operation. Sensor and actuator faults and failures are often neglected in simulations for control strategy development and testing, although it is well known that they represent a significant obstacle for realising control at full-scale facilities. The framework for incorporating faults and failures is based on Markov chains and displays the appealing property of easy transition of sensor and actuator history into a model for fault generation. The paper briefly describes Markov theory and how this is used together with models for sensor and actuator dynamics to achieve a realistic simulation of measurements and actuators.

A practitioner’s perspective on the application and research needs of membrane bioreactors for municipal wastewater treatment

2012 ◽  
Vol 122 ◽  
pp. 2-10 ◽  
Author(s):  
Jeremy T. Kraemer ◽  
Adrienne L. Menniti ◽  
Zeynep K. Erdal ◽  
Timothy A. Constantine ◽  
Bruce R. Johnson ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Membrane Bioreactors ◽  
Research Needs ◽  
Municipal Wastewater Treatment

Wastewater Treatment With Activated Carbon

1972 ◽  
Vol 7 (1) ◽  
pp. 1-12
Author(s):  
A. Benedek
Keyword(s):  
Wastewater Treatment ◽  
Activated Carbon ◽  
Chemical Treatment ◽  
Technological Development ◽  
Municipal Waste ◽  
Research Needs ◽  
Physico Chemical ◽  
Recent Developments

Abstract Recent developments in the application of activated carbon to wastewater treatment are reviewed. Particular emphasis is placed on the physico-chemical treatment of municipal waste. Technological development, adsorptive behaviour, and research needs serve as the three primary discussion topics.

scholarly journals Preparation, Performances, and Mechanisms of Microbial Flocculants for Wastewater Treatment

2020 ◽  
Vol 17 (4) ◽  
pp. 1360 ◽  
Author(s):  
Huiru Li ◽  
Shaohua Wu ◽  
Cheng Du ◽  
Yuanyuan Zhong ◽  
Chunping Yang
Keyword(s):  
Heavy Metals ◽  
Wastewater Treatment ◽  
Suspended Solids ◽  
Current Status ◽  
Future Research ◽  
Research Needs ◽  
Close Attention ◽  
Charge Neutrality ◽  
Environmental Friendliness ◽  
Preparation Methods

In recent years, close attention has been paid to microbial flocculants because of their advantages, including safety to humans, environmental friendliness, and acceptable removal performances. In this review, the preparation methods of microbial flocculants were first reviewed. Then, the performances of bioflocculants in the removal of suspended solids, heavy metals, and other organic pollutants from various types of wastewater were described and commented, and the removal mechanisms, including adsorption bridging, charge neutralization, chemical reactions, and charge neutrality, were also discussed. The future research needs on microbial flocculants were also proposed. This review would lead to a better understanding of current status, challenges, and corresponding strategies on microbial flocculants and bioflocculation in wastewater treatment.

scholarly journals Nanofiltration for water and wastewater treatment – a mini review

2013 ◽  
Vol 6 (1) ◽  
pp. 47-53 ◽  
Author(s):  
H. K. Shon ◽  
S. Phuntsho ◽  
D. S. Chaudhary ◽  
S. Vigneswaran ◽  
J. Cho
Keyword(s):  
Water Quality ◽  
Wastewater Treatment ◽  
Energy Consumption ◽  
Reverse Osmosis ◽  
Lower Energy ◽  
Quality Standards ◽  
Water Quality Standards ◽  
Paper Briefly ◽  
Water And Wastewater Treatment ◽  
Water And Wastewater

Abstract. The application of membrane technology in water and wastewater treatment is increasing due to stringent water quality standards. Nanofiltration (NF) is one of the widely used membrane processes for water and wastewater treatment in addition to other applications such as desalination. NF has replaced reverse osmosis (RO) membranes in many applications due to lower energy consumption and higher flux rates. This paper briefly reviews the application of NF for water and wastewater treatment including fundamentals, mechanisms, fouling challenges and their controls.

Sign in / Sign up

Export Citation Format

Share Document