Influence of cosubstrate and hydraulic retention time on the removal of drugs and hygiene products in sanitary sewage in an anaerobic Expanded Granular Sludge Bed reactor

To accomplish rapidly the granulation process of digestion sludge for the treatment of actual coking wastewater and meanwhile achieve high COD, phenol, SCN- and CN- removal, the EGSB reactor was employed with two operation stages. StageI: Granular sludge was formed from digestion sludge using brewery wastewater as substrate in the anaerobic way (meanwhile adding little granules, which were 1/7 of the total biomass). StageII: Granular sludge was acclimatized with the actual coking wastewater through continuous micro-oxygenation way. The experimental results showed that the granular sludge could quickly form in 10d in the EGSB reactor seeded with digestion sludge and little loose granules. It took only about 6 months for the successful micro-aerobic acclimating of the granular sludge by the actual coking wastewater. The removal efficiencies of COD, phenol, SCN- and CN- were 72.9, 99.5, 95.7 and 97.5%, respectively, at 12.1h hydraulic retention time (HRT) and for 631-922, 12.8-37.7, 66.7-232.7 and 0.3-57.8mg.L-1 influent COD, phenol, SCN- and CN- concentration.

Download Full-text

Impact of hydraulic retention time on swine wastewater treatment by aerobic granular sludge sequencing batch reactor

Environmental Science and Pollution Research ◽

10.1007/s11356-020-10922-w ◽

2020 ◽

Author(s):

Xiaochun Wang ◽

Ji Li ◽

Xiaolei Zhang ◽

Zhonglin Chen ◽

Jimin Shen ◽

...

Keyword(s):

Wastewater Treatment ◽

Retention Time ◽

Sequencing Batch Reactor ◽

Hydraulic Retention Time ◽

Batch Reactor ◽

Granular Sludge ◽

Swine Wastewater ◽

Aerobic Granular Sludge

Download Full-text

Influence of hydraulic retention time on partial nitrification of continuous-flow aerobic granular-sludge reactor

Environmental Technology ◽

10.1080/09593330.2014.881423 ◽

2014 ◽

Vol 35 (14) ◽

pp. 1760-1765 ◽

Cited By ~ 8

Author(s):

Chunli Wan ◽

Xue Yang ◽

Duu-Jong Lee ◽

Supu Sun ◽

Xiang Liu ◽

...

Keyword(s):

Retention Time ◽

Continuous Flow ◽

Hydraulic Retention Time ◽

Granular Sludge ◽

Partial Nitrification ◽

Aerobic Granular Sludge

Download Full-text

Characteristics and performance of aerobic granular sludge treating rubber wastewater at different hydraulic retention time

Bioresource Technology ◽

10.1016/j.biortech.2014.03.047 ◽

2014 ◽

Vol 161 ◽

pp. 155-161 ◽

Cited By ~ 29

Author(s):

Noor Hasyimah Rosman ◽

Aznah Nor Anuar ◽

Shreeshivadasan Chelliapan ◽

Mohd Fadhil Md Din ◽

Zaini Ujang

Keyword(s):

Retention Time ◽

Hydraulic Retention Time ◽

Granular Sludge ◽

Aerobic Granular Sludge ◽

And Performance ◽

Rubber Wastewater

Download Full-text

The nitrogen removal potential of predenitrification systems in sensitive coastal areas

Water Science & Technology ◽

10.2166/wst.1995.0218 ◽

1995 ◽

Vol 32 (7) ◽

pp. 135-142

Author(s):

E. Görgün ◽

N. Artan ◽

D. Orhon ◽

R. Tasli

Keyword(s):

Water Quality ◽

Wastewater Treatment ◽

Nitrogen Removal ◽

Retention Time ◽

Treatment Process ◽

Hydraulic Retention Time ◽

Domestic Sewage ◽

Coastal Areas ◽

Careful Evaluation ◽

Denitrification Kinetics

Effective nitrogen removal is now required to protect water quality in sensitive coastal areas. This involves a much more difficult treatment process than for conventional domestic sewage as wastewater quantity and quality exhibits severe fluctuations in touristic zones. Activated sludge is currently the most widely used wastewater treatment and may be upgraded as a predenitrification system for nitrogen removal. Interpretation of nitrification and denitrification kinetics reveal a number of useful correlations between significant parameters such as sludge age, C/N ratio, hydraulic retention time, total influent COD. Nitrogen removal potential of predenitrification may be optimized by careful evaluation of wastewater character and the kinetic correlations.

Download Full-text

Evaluation of a tropical single-cell waste stabilization pond system for irrigation

Water Science & Technology ◽

10.2166/wst.1995.0495 ◽

1995 ◽

Vol 31 (12) ◽

pp. 267-273 ◽

Cited By ~ 4

Author(s):

B. S. O. Ceballos ◽

A. Konig ◽

B. Lomans ◽

A. B. Athayde ◽

H. W. Pearson

Keyword(s):

Single Cell ◽

Removal Efficiency ◽

Retention Time ◽

Hydraulic Retention Time ◽

Full Scale ◽

Waste Stabilization Pond ◽

North East ◽

Helminth Eggs ◽

Waste Stabilization ◽

Better Than

A single full-scale primary facultative pond in Sapé, north-east Brazil was monitored for performance and efficiency. The pond had a hydraulic retention time of 61 days and achieved a 95% BOD5 removal efficiency and had no helminth eggs in the effluent. The effluent failed to meet the WHO faecal coliform guideline for unrestricted irrigation. The pond was dominated by the cyanobacterium Microcystis and gave better than predicted orthophosphate removal. Details of how the system could be simply upgraded utilizing the same land are discussed.

Download Full-text