Operation Experiences with Biological Phosphorus Removal at the Sewage Treatment Plants of Berlin (West)

1991 ◽  
Vol 24 (7) ◽  
pp. 133-148 ◽  
Author(s):  
A. Peter ◽  
F. Sarfert
Keyword(s):  
Phosphorus Removal ◽  
Sewage Treatment ◽  
Chemical Precipitation ◽  
Biological Phosphorus Removal ◽  
Treatment Results ◽  
Sewage Treatment Plants ◽  
Research Activities ◽  
Two Stages ◽  
The Given ◽  
Biological Phosphorus

In investigations concerning sludge bulking in Berlin enhanced biological phosphorus removal was first observed unexpectedly. Because since 1986 an officially preset limit of 2 mg TP/l must be kept in all Berlin wastewater discharges it was decided to explore the capabilities of the observed mechanism under the specific circumstances of the exciting two large treatment plants in Ruhleben (240,000 m3/d) and Marienfelde (100,000 m3/d). For this purpose some of the existing units at both plants were equipped with anaerobic zones which were generated mainly by process modifications. Additionally stage one of the Ruhleben plant was altered completely in order to investigate the combination of biological phosphorus and nitrogen removal as a special pilot study in three parallel trains. The research activities and treatment results gained in each of the two stages of the Ruhleben and in the Marienfelde plant are reported in detail. For example BOD-related phosphorus removal rates were obtained ranging from 2.3-4.5 mg TP per 100 mg BOD removed. It must be stressed that all examinations were performed on full-scale conditions. At present the given limit of 2 mg TP/l in the Ruhleben plant is met without any chemical precipitation at least on average. From the beginning biological phosphorus removal will be integrated into further projected extensions.

Full-Scale Experiences with Biological Phosphorus Removal at the Wastewater Treatment Plants of West Berlin

1989 ◽  
Vol 21 (10-11) ◽  
pp. 1373-1387 ◽  
Author(s):  
R. Boll ◽  
R. Kayser ◽  
A. Peter ◽  
F. Sarfert
Keyword(s):  
Phosphorus Removal ◽  
Wastewater Treatment Plants ◽  
Chemical Precipitation ◽  
Full Scale ◽  
Biological Phosphorus Removal ◽  
Research Activities ◽  
West Berlin ◽  
Two Stages ◽  
The Given ◽  
Biological Phosphorus

In investigations concerning sludge bulking in Berlin enhanced biological phosphorus removal was first observed unexpectedly. Because since 1986 an officially preset limit of 2 mg TP/l must be kept in all Berlin wastewater discharges it was decided to explore the capabilities of the observed mechanism under the specific circumstances of the existing two large treatment plants in Ruhleben (240,000 m3/d) and Marienfelde (100,000 m3/d). For this purpose some of the existing units at both plants were equipped with anaerobic zones which were generated mainly by process modifications. Additionally stage one of the Ruhleben plant was altered completely in order to investigate the combination of biological phosphorus and nitrogen removal as a special pilot study in three parallel trains. The research activities and treatment results gained in each of the two stages of the Ruhleben and in the Marienfelde plant are reported in detail. For example BOD-related phosphorus removal rates were obtained ranging from 2.3-4.5 mg TP per 100 mg BOD removed. It must be stressed that all examinations were performed under full-scale conditions. At present the given limit of 2 mg TP/l in the Ruhleben plant is met without any chemical precipitation at least on average. From the beginning biological phosphorus removal will be integrated into further projected extensions.

scholarly journals The PHO pathway involved in phosphate metabolism in Yeast for efficient phosphorus removal

2018 ◽  
Vol 53 ◽  
pp. 04023
Author(s):  
Mengfei Hu ◽  
Liping Qiu ◽  
Yan Wang
Keyword(s):  
Protein Interactions ◽  
Phosphorus Removal ◽  
High Efficiency ◽  
Sewage Treatment ◽  
Essential Elements ◽  
Phosphorus Recovery ◽  
Biological Phosphorus Removal ◽  
Protein Protein Interactions ◽  
Pho Pathway ◽  
Biological Phosphorus

Phosphorus is one of the essential elements needed for the growth and reproduction of any organism. To improve the efficiency of biological phosphorus removal in sewage, it is very important to grasp the precise mechanism of biological phosphorus removal. Yeast is a single cell fungus and has a unique advantage in sewage treatment. Recent studies in the different types of yeast have revealed that there is a phosphate-responsive signal transduction (PHO) pathway to regulate phosphate-responsive genes for controlling phosphate absorption. In this review, the metabolic mechanisms and protein-protein interactions associated with the PHO pathway are highlighted firstly, and then several examples about improving the phosphorus removal efficiency of sewage by inducing gene mutation in yeast phosphorus metabolism was introduced. The aim is to provide new ideas for the realization of high-efficiency phosphorus recovery in nature.

Phosphorus removal from nightsoil with sequencing batch reactor (SBR)

1997 ◽  
Vol 36 (12) ◽  
pp. 55-60 ◽  
Author(s):  
S. W. Oa ◽  
E. Choi
Keyword(s):  
Chemical Reactions ◽  
Phosphorus Removal ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Chemical Precipitation ◽  
Phosphorus Release ◽  
Biological Nutrient Removal ◽  
Biological Phosphorus Removal ◽  
P Fractionation ◽  
Biological Phosphorus

Phosphorus removal characteristics are rather complicated in a highly nitrogenous waste like nightsoil under treatment with SBR (sequencing batch reactor). It was found that the increased pH due to denitrification in anaerobic period stimulated chemical precipitation of phosphorus as struvite and hydroxyapatite, and the depressed pH due to nitrification in the aerobic period dissolved the previously formed precipitates. Phosphate accumulating organisms (PAO) worked as in the ordinary BNR (biological nutrient removal) systems regardless of the chemical reactions, but the chemical reactions masked the biological phosphorus release and uptake reactions. About 36% of phosphorus applied was removed biologically in polyphosphate granules. P-fractionation of sludges confirmed this phenomenon. Biological phosphorus removal could be increased with the increased anaerobic period. The morphological types of phosphorus precipitates were examined by SEM in combination with x-ray diffraction.

The requirement of metal cations for enhanced biological phosphorus removal by activated sludge

1999 ◽  
Vol 40 (2) ◽  
pp. 159-165 ◽  
Author(s):  
Vikram M. Pattarkine ◽  
Clifford W. Randall
Keyword(s):  
Activated Sludge ◽  
Phosphorus Removal ◽  
Phosphorus Uptake ◽  
Metal Cations ◽  
Chemical Precipitation ◽  
Enhanced Biological Phosphorus Removal ◽  
Biological Phosphorus Removal ◽  
Batch Experiments ◽  
Biological Phosphorus ◽  
Potassium Magnesium

The objectives of the study described in this paper were to study the requirements of potassium, magnesium, and calcium for enhanced biological phosphorus removal (EBPR) and to determine whether either potassium or magnesium could support EBPR on its own. Batch experiments indicated that phosphorus uptake by the sludge was affected by the availability of potassium, magnesium, and calcium. Both potassium and magnesium were simultaneously required and neither was adequate by itself for EBPR. Calcium did not appear to be required for EBPR, and did not seem to be involved in biologically mediated chemical precipitation.

Elimination costs for different wastewater compounds

2003 ◽  
Vol 47 (12) ◽  
pp. 119-124
Author(s):  
A. Schulz ◽  
F. Obenaus ◽  
B. Egerland ◽  
E. Reicherter
Keyword(s):  
Phosphorus Removal ◽  
Wastewater Treatment Plants ◽  
Present Report ◽  
Chemical Precipitation ◽  
Cost Calculation ◽  
Biological Phosphorus Removal ◽  
Planning Decisions ◽  
Different Types ◽  
The Cost ◽  
Biological Phosphorus

The present report presents the system and discusses the results of the cost calculation for the reduction/elimination of different wastewater and sludge compounds. These costs were calculated for different types of processes at 102 wastewater treatment plants of Emschergenossenschaft/Lippeverband and Aggerverband. Comparing enhanced biological phosphorus removal and precipitation, one of the results indicates that in general the costs for elimination of one kilogram of phosphorus are lower in the plants in which only chemical precipitation is used for P reduction. Further results of the cost calculation will be presented with a discussion of their possible influence on planning decisions.

Biological Phosphorus and Nitrogen Removal at an Experimental Full Scale Plant in the U.K.

1985 ◽  
Vol 17 (11-12) ◽  
pp. 213-232 ◽  
Author(s):  
A. G. Best ◽  
C. J. Hatton ◽  
A. J. Rachwal ◽  
B. Hurley
Keyword(s):  
Phosphorus Removal ◽  
Sewage Treatment ◽  
Operating Conditions ◽  
Biological Phosphorus Removal ◽  
Monthly Average ◽  
Flow Through ◽  
Percentage Removal ◽  
Biological Phosphorus ◽  
Total P ◽  
P Removal

A three year project to improve the performance of a conventional diffused air activated sludge plant was carried out on a 4000 m3/day stream at the Basingstoke Sewage Treatment Works of Thames Water Authority from 1981-1984. The modified plant named ROTANOX comprised the use of rotary flow through two adjacent aeration lanes with the introduction of an anoxic section for denitrification. In the last 12 months of the study an anaerobic zone was created at the front of the plant and, after establishment of the necessary operating conditions, biological phosphorus removal was monitored. An effluent with a mean of 4 mg/l BOD, 11 mg/l SS and 2 mg/l NH3-N was achieved during the first two years of operation and energy consumption was reduced by 15%. In the final year a mean total P removal of 5.7 mg/l was recorded with the highest monthly average being 10 mg/l removal. This was equivalent to mean percentage removal of 40% and 47% respectively.

scholarly journals Enhanced biological phosphorus removal in low temperature sewage with iron-carbon SBR system

2021 ◽  
Author(s):  
wei li ◽  
Mingjie Gao ◽  
He Wang ◽  
Yunhe Hou ◽  
Yiming Chen ◽  
...  
Keyword(s):  
Community Structure ◽  
Microbial Community ◽  
Low Temperature ◽  
Microbial Community Structure ◽  
Phosphorus Removal ◽  
Sewage Treatment ◽  
Biological Phosphorus Removal ◽  
Cold Area ◽  
Metabolic Mechanism ◽  
Biological Phosphorus

Abstract This study proposed an AO-SBR combined with iron-carbon micro-electrolysis (ICME) particles system for sewage treatment at low temperature and explored the dephosphorization mechanism and microbial community structure. The experimental results illustrated that ICME particles contributed to phosphorus removal, metabolic mechanism and microbial community structure. The optimal treatment effect was achieved under the conditions of pH 7, DO 3.0 mg/L and particle dosage of 2.6 g Fe-C/g MLSS, and the removal rates of COD, TP, NH4+-N and TN reached 80.56%, 91.46%, 69.42% and 57.57%. The proportion of phosphorus accumulating organisms (PAOs) increased from 4.54% in SBR system to 10.89% in ICME-SBR system at 10°C. Additionally, metabolic rate of PAOs was promoted, and the activities of DHA and ETS both reached the maximum value of 13.34 ug·mg− 1VSS·h− 1 and 102.88 ug·mg− 1VSS·h− 1. These results suggest that the ICME particles could improve the performance of activated sludge under low-temperature conditions. This technology provides a new way for upgrading of the performance of sewage treatment in cold area

Experience and extensions to the ASM2 family of models

2002 ◽  
Vol 45 (6) ◽  
pp. 177-186 ◽  
Author(s):  
J. Dudley ◽  
G. Buck ◽  
R. Ashley ◽  
A. Jack
Keyword(s):  
Phosphorus Removal ◽  
Volatile Fatty Acids ◽  
Sewage Treatment ◽  
Low Frequency ◽  
Complex Model ◽  
Aeration Tank ◽  
Biological Phosphorus Removal ◽  
Treatment Processes ◽  
Hourly Data ◽  
Biological Phosphorus

The development of ASM2 has created a complex model for biological phosphorus removal. Most of the published work on calibrating this model has focused on the design of experiments to maximise information with which to calibrate the model, or the use of hourly data collected around and within an aeration tank. But many sewage works do not collect such data, nor have such instrumentation. The application of ASM2 with sparse data collected at a low frequency, and mostly only input-output, is considered in this paper, based on data collected at a Swedish sewage works. This paper shows that ASM2 can be calibrated with such measurements. This paper also looks at a modification to ASM2d to better handle heterotrophic usage of volatile fatty acids, and the use of this model to study the effects of large increases in in-sewer storage on sewage treatment works. Concern about the generation of large quantities of VFAs, and their effect on the sewage treatment processes, was unfounded.

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