نتایج جستجو برای: after fabrication of sequencing batch reactor sbr

تعداد نتایج: 21311565  

2016
Wenjing Chen Xiaohu Dai Dawen Cao Sha Wang Xiaona Hu Wenru Liu Dianhai Yang

The partial nitrification (PN) performance and the microbial community variations were evaluated in a sequencing batch reactor (SBR) for 172 days, with the stepwise elevation of ammonium concentration. Free ammonia (FA) and low dissolved oxygen inhibition of nitrite-oxidized bacteria (NOB) were used to achieve nitritation in the SBR. During the 172 days operation, the nitrogen loading rate of t...

2000
D. Hegg

This paper shows the application of several kinds of artificial intelligence techniques in the development of a control system for a biochemical process. A wastewater treatment process for nitrogen removal in a sequencing batch reactor (SBR) is presented first; two different approaches to identify the endpoint of the biological reactions are introduced. The paper compares and analyzes the resul...

2004
Montserrat Rubio Joan Colomer Magda L. Ruiz Jesús Colprim Joaquim Meléndez

A Sequencing Batch Reactor (SBR) is a wastewater process that occurs in a unique basin working with a predefined cycle. The reactor is monitored by the pH, Oxidation Reduction Potential, Dissolved Oxygen and Temperature sensors. This work proposes a qualitative representation of process variables based on episodes for ORP and pH signals to determine the complete denitrification and nitrificatio...

2012
Thomas Schaubroeck Samik Bagchi Haydée De Clippeleir Marta Carballa Willy Verstraete Siegfried E. Vlaeminck

Oxygen-limited autotrophic nitrification/denitrification (OLAND) is a one-stage combination of partial nitritation and anammox, which can have a challenging process start-up. In this study, start-up strategies were tested for sequencing batch reactors (SBR), varying hydraulic parameters, i.e. volumetric exchange ratio (VER) and feeding regime, and salinity. Two sequential tests with two paralle...

2014
M. K. Jungles J. L. Campos H. R. Costa

In this work, the performance of a sequencing batch reactor (SBR) on aerobic granular sludge was studied for urban wastewater treatment. The system was inoculated with aerobic activated sludge collected from a wastewater treatment plant and, after 30 days of operation, the first granules observed had an average diameter of 0.1 mm. The biomass concentration reached a maximum value around 4 g VSS...

Journal: :Bioresource technology 2010
Xian-Yang Shi Guo-Ping Sheng Xiao-Yan Li Han-Qing Yu

The granulation of nitrifying sludge in a sequencing batch reactor (SBR) fed with NH(4)(+)-N-laden inorganic wastewater was investigated. After 120-day operation spherical and elliptical granules with an average diameter of 0.32 mm were observed. The hydrophobicity surface, settling velocity and specific gravity of the matured granules increased with the processing of sludge granulation. Spatia...

2014
Ranjith Kumar

The manufacture of paper generates significant quantities of waste water; which can have deleterious effects on the receiving waters; therefore there is a need to find a treatment process which can minimize these effects considerably. The raw wastewater from paper and board mills can be potentially very polluting. This paper reveals the results of laboratory experiments using a sequential batch...

2015
Ben van den Akker Kyra Middlemiss Katherine Reid Joerg Krampe Nirmala Dinesh

The sequencing batch reactor (SBR) installed at Pt Pirie WWTP in South Australia is hydraulically overloaded due to significant ground water infiltration into the sewer network and requires additional treatment capacity. Modifying the operational parameters of Pt Pirie’s SBRs to select for granular sludge (GS) could be a viable means of increasing capacity. Through the use of a pilot-scale SBR ...

2002

The sequencing batch reactor (SBR) process is a sequential suspended growth (activated sludge) process in which all major steps occur in the same tank in sequential order (figure 1). There are two major classifications of SBRs: the intermittent flow (IF) or “true batch reactor,” which employs all the steps in figure 1, and the continuous flow (CF) system, which does not follow these steps. Both...

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