High loaded MBRs for organic matter recovery from sewage: Effect of solids retention time on bioflocculation and on the role of extracellular polymers

2014 ◽  
Vol 56 ◽  
pp. 258-266 ◽  
Author(s):  
L. Faust ◽  
H. Temmink ◽  
A. Zwijnenburg ◽  
A.J.B. Kemperman ◽  
H.H.M. Rijnaarts
Keyword(s):  
Organic Matter ◽  
Retention Time ◽  
Extracellular Polymers ◽  
Solids Retention Time ◽  
Solids Retention

scholarly journals Simultaneous removal of phosphorus and dissolved organic matter from a sludge in situ reduction process effluent by coagulants

RSC Advances ◽  
2017 ◽  
Vol 7 (67) ◽  
pp. 42305-42311 ◽  
Author(s):  
Ying An ◽  
Zhen Zhou ◽  
Weimin Qiao ◽  
Wei Pan ◽  
Zhihui Chen
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Retention Time ◽  
Reduction Process ◽  
Major Obstacle ◽  
Simultaneous Removal ◽  
In Situ Reduction ◽  
Solids Retention Time ◽  
Solids Retention

Owing to the long solids retention time and effective sludge decay, the increase in the amount of phosphorus and dissolved organic matter (DOM) in effluents is a major obstacle to the sludge in situ reduction process.

scholarly journals EFFECT OF ORGANIC LOADING RATE ON SIMULTANEOUS REMOVAL OF NITROGEN AND PHOSPHORUS FROM AQUATIC PRODUCT PROCESSING WASTEWATER BY ADVANCED A2/O – BAF SYSTEM

2018 ◽  
Vol 54 (4B) ◽  
pp. 200
Author(s):  
Nguyen Xuan Quynh Nhu
Keyword(s):  
Organic Matter ◽  
Retention Time ◽  
Loading Rate ◽  
Organic Loading Rate ◽  
Simultaneous Removal ◽  
Organic Loading ◽  
Nitrogen And Phosphorus ◽  
Aquatic Product ◽  
Solids Retention Time ◽  
Solids Retention

Combined system of Anaerobic/Anoxic/Oxic reactor with Biological Aerated Filter (A2/O – BAF) is used to enhance simultaneous removal of nitrogen and phosphorus on aquatic product processing wastewater treatment. A2/O reactor was operated with short solids retention time employed mainly for removal of organic matter and phosphorus together with denitrification and BAF with long solids retention time employed mainly for nitrification. The model of combined A2/O – BAF system made from polyacrylic with the capacity of 49.5 liters was operated with hydraulic retention time decreased from 19.2 to 9.6 hours and organic loading rates increased from 0.50 to 1.0 kgCOD/m3/day.  The results showed that the model not only treated organic matter well but also removed nearly completely both nitrogen and phosphorus. For loading rate of 0.75 kgCOD/m3/day, treatment efficiencies of COD, NH4+-N, TN, TP of the model were the highest as 91.02, 96.82, 84.08, 86.66  %, respectively and output values of these parameters were within the limits of QCVN 11:2008/BTNMT, column A.

Impact of solids retention time on dissolved organic nitrogen and its biodegradability in treated wastewater

2016 ◽  
Vol 92 ◽  
pp. 44-51 ◽  
Author(s):  
Halis Simsek ◽  
Murthy Kasi ◽  
Jae-Bom Ohm ◽  
Sudhir Murthy ◽  
Eakalak Khan
Keyword(s):  
Retention Time ◽  
Dissolved Organic Nitrogen ◽  
Organic Nitrogen ◽  
Treated Wastewater ◽  
Solids Retention Time ◽  
Solids Retention

Nitrogen removal in activated sludge systems including denitrification in secondary clarifiers

1994 ◽  
Vol 30 (6) ◽  
pp. 101-111 ◽  
Author(s):  
H. Siegrist ◽  
W. Gujer
Keyword(s):  
Activated Sludge ◽  
Nitrogen Removal ◽  
Retention Time ◽  
Secondary Clarifier ◽  
Solids Retention Time ◽  
Solids Retention ◽  
Activated Sludge Systems

Denitrification in the secondary clarifier can contribute substantially to the nitrogen removal of activated sludge systems. This is illustrated on two treatment plants with different secondary clarifier systems. A model to estimate denitrification capacity and to design activated sludge systems for nitrogen removal is developed and verified with data from two treatment plants. The model includes denitrification in the secondary clarifier, wastewater composition (soluble readily biodegradable COD, particulate degradable COD), oxygen input into the anoxic volume, temperature, and solids retention time (SRT). The influence of aerated grit chambers and primary sedimentation on denitrification is discussed.

Sign in / Sign up

Export Citation Format

Share Document