The Efficiency of Biological Total Phosphorus Removal Process

2019 ◽  
Vol 70 (6) ◽  
pp. 1920-1923
Author(s):  
Cristian Muntenita ◽  
Carmelia Mariana Dragomir Balanica ◽  
Aurel Gabriel Simionescu ◽  
Silvius Stanciu ◽  
Camelia Lacramioara Popa
Keyword(s):  
Total Phosphorus ◽  
Phosphorus Removal ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Municipal Wastewater Treatment ◽  
Yearly Average ◽  
Effluent Discharge ◽  
Municipal Wastewater Treatment Plants ◽  
Biological Methods ◽  
Degree Of Purification

This article investigates the efficiency of phosphorus removal in the municipal wastewater treatment plants in five counties of Romania from 2013 to 2017. This study focused on evaluation of the performance of phosphorus elimination using biological methods in order to respect the admissible effluent discharge limits. The yearly average of inflow total phosphorus varies from 3.64 mg/L to 4.22 mg/L comparing with 1.02 mg/ L and 1.59 mg/L the average of outflow. Chemical and biological methods are utilized to remove phosphorus. The efficiency of the numerous process available for the phosphorus removal is quite inadequate by comparing the effluent degree of purification and the removal cost.

Microsieving in primary treatment: effect of chemical dosing

2016 ◽  
Vol 74 (2) ◽  
pp. 438-447 ◽  
Author(s):  
J. Väänänen ◽  
M. Cimbritz ◽  
J. la Cour Jansen
Keyword(s):  
Wastewater Treatment ◽  
Phosphorus Removal ◽  
Suspended Solids ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Pilot Scale ◽  
Primary Treatment ◽  
Municipal Wastewater Treatment ◽  
Chemically Enhanced Primary Treatment ◽  
Municipal Wastewater Treatment Plants

Primary and chemically enhanced primary wastewater treatment with microsieving (disc or drum filtration) was studied at the large pilot scale at seven municipal wastewater treatment plants in Europe. Without chemical dosing, the reduction of suspended solids (SS) was (on average) 50% (20–65%). By introducing chemically enhanced primary treatment and dosing with cationic polymer only, SS removal could be controlled and increased to >80%. A maximum SS removal of >90% was achieved with a chemical dosing of >0.007 mg polymer/mg influent SS and 20 mg Al3+/L or 30 mg Fe3+/L. When comparing sieve pore sizes of 30–40 μm with 100 μm, the effluent SS was comparable, indicating that the larger sieve pore size could be used due to the higher loading capacity for the solids. Phosphorus removal was adjusted with the coagulant dose, and a removal of 95–97% was achieved. Moreover, microsieving offers favourable conditions for automated dosing control due to the low retention time in the filter.

Performance of the biological nitrogen and phosphorus removal in four large WWTPs in Germany

2000 ◽  
Vol 41 (9) ◽  
pp. 233-240 ◽  
Author(s):  
K.-H. Rosenwinkel ◽  
F. Obenaus ◽  
M. Wichern
Keyword(s):  
Phosphorus Removal ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Municipal Wastewater Treatment ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal ◽  
Design Data ◽  
Municipal Wastewater Treatment Plants ◽  
Biological Nitrogen ◽  
Activated Sludge Systems

In this paper the design data, flow sheets, operating results and running experiences of four municipal wastewater treatment plants are presented. The size of these plants varies between 95,000 and 830,000 people equivalents. Different activated sludge systems running with cascades and simultaneous nitrification/denitrification are practised in these plants. The data of these different plants are compared.

Experience with phosphorus removal and sludge handling and disposal in Flanders

2005 ◽  
Vol 52 (4) ◽  
pp. 19-25
Author(s):  
D. Bixio ◽  
I. Boonen ◽  
C. Thoeye ◽  
G. De Gueldre
Keyword(s):  
Phosphorus Removal ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Municipal Wastewater Treatment ◽  
Enhanced Biological Phosphorus Removal ◽  
Biological Phosphorus Removal ◽  
Key Factor ◽  
Municipal Wastewater Treatment Plants ◽  
The Impact ◽  
Biological Phosphorus

The way excess sludge must be disposed of is a key factor in the choice of the appropriate phosphorus removal technique at municipal wastewater treatment plants. In Europe the ongoing trend of tightening the sludge spreading rules called for a serious reduction of its agricultural utilisation and the expansion of the (co-)incineration disposal route, which led to a shift towards more sophisticated sludge handling techniques. This paper illustrates the impact of different sludge handling techniques on the performance of chemical and enhanced biological phosphorus removal at municipal WWTPs. The main conclusion is that although enhanced biological phosphorus removal is particularly sensitive to the problem of return liquors from sludge treatment processes indirect dewatering and anaerobic stabilisation cannot be discarded altogether when considering its implementation.

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