scholarly journals The assessment of technical -economic efficiency of Sequencing Batch Reactors in municipal wastewater treatment in developing countries

2021 ◽  
Vol 1030 ◽  
pp. 012060
Author(s):  
Tran Ha Quan ◽  
Elena Gogina
Keyword(s):  
Developing Countries ◽  
Wastewater Treatment ◽  
Economic Efficiency ◽  
Municipal Wastewater ◽  
Batch Reactors ◽  
Sequencing Batch Reactors ◽  
Municipal Wastewater Treatment

Occurrence of Microthrix parvicella in sequencing batch reactors

2014 ◽  
Vol 69 (10) ◽  
pp. 1984-1995 ◽  
Author(s):  
Lana Mallouhi ◽  
Ute Austermann-Haun
Keyword(s):  
Activated Sludge ◽  
Municipal Wastewater ◽  
Batch Reactor ◽  
Oxygen Demand ◽  
Volume Index ◽  
Batch Reactors ◽  
Sequencing Batch Reactors ◽  
Municipal Wastewater Treatment ◽  
Nitrogen And Phosphorus ◽  
Microthrix Parvicella

Sequencing batch reactors (SBRs) are known for high process stability and usually have a good sludge volume index (SVI). Nevertheless, in many SBRs in Germany for municipal wastewater treatment, scum and foam problems can occur, and SVI can be larger than 200 mL/g. The microscopic investigations of the activated sludge from plants with nitrogen and phosphorus removal have shown that Microthrix parvicella is dominant in the activated sludge in most of them. Studies showed that the optimum growth of M. parvicella is performed at a high sludge age (>20 d) and low sludge load in the range of 0.05–0.2 kg of biochemical oxygen demand per kg of total suspended solids per day (kg BOD5/(TSS·d)). The investigations in 13 SBRs with simultaneous aerobic sludge stabilization (most of them are operated with a system called differential internal cycle strategy sequential batch reactor (DIC-SBR)) show that M. parvicella is able to grow in sludge loads less than 0.05 kg BOD5/(kg TSS·d) as well. To optimize the operation of those SBRs, long cycle times (8–12 h) and dosing of iron salts to eliminate long-chain fatty acids are both recommended. This leads to better SVI and keeps M. parvicella at a low frequency.

Wastewater management in Greece: experience and lessons for developing countries

2001 ◽  
Vol 44 (6) ◽  
pp. 163-172 ◽  
Author(s):  
K. P. Tsagarakis ◽  
D. D. Mara ◽  
A. N. Angelakis
Keyword(s):  
Developing Countries ◽  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Development Economic ◽  
Wastewater Management ◽  
Municipal Wastewater Treatment ◽  
Key Issues ◽  
Treatment Policies ◽  
Source Of Information ◽  
Selection Of

Technologies to treat wastewater are now well established and are capable of producing almost any degree of purification. The main issue surrounding the selection of a given process lies in deciding which is the most appropriate and applicable technology for the particular social, political and economic environment. This paper concentrates on the development of the municipal wastewater treatment sector in Greece. It examines the deficiencies and problems arising from the implementation of wastewater management policies and makes a number of suggestions and recommendations. The areas considered include, among others, historical development, economic development and pollution control, key issues for wastewater treatment policies and lessons applicable to developing countries. It is hoped that this study will be a valuable source of information for countries embarking on nationwide sanitation projects.

Microalgal Dynamics in Batch Reactors for Municipal Wastewater Treatment Containing Dairy Sewage Water

2007 ◽  
Vol 190 (1-4) ◽  
pp. 259-270 ◽  
Author(s):  
Clementina Barrera Bernal ◽  
Gabriela Vázquez ◽  
Icela Barceló Quintal ◽  
Anne Laure Bussy
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Sewage Water ◽  
Batch Reactors ◽  
Municipal Wastewater Treatment

Kenaf addition has mixed effects on process performance of sequencing batch reactors treating municipal wastewater

2018 ◽  
Vol 4 (5) ◽  
pp. 711-720 ◽  
Author(s):  
Forrest James Hurley ◽  
Xia He ◽  
Ling Wang ◽  
Francis L. de los Reyes III
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Mixed Effects ◽  
Batch Reactors ◽  
Process Performance ◽  
Sequencing Batch Reactors ◽  
Mixed Liquor

The effects on wastewater treatment due to addition to the mixed liquor of a fine lignocellulosic powder made of dried kenaf were assessed using lab-scale sequencing batch reactors (SBRs) operated for over 200 days.

Sign in / Sign up

Export Citation Format

Share Document