A seven year plan for upgrading the 200.000 p.e. treatment plant of Uppsala, Sweden

1994 ◽  
Vol 29 (12) ◽  
pp. 117-127
Author(s):  
Jan Erik Lind ◽  
Ernst Olof Swedling
Keyword(s):  
Cost Efficiency ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Working Environment ◽  
Regional Environment ◽  
Nitrogen Reduction ◽  
Total Investment ◽  
Close Cooperation ◽  
The Cost

The sewage treatment plant of Uppsala was originally built in 1946 and has since then been extended and upgraded several times up to 1972 when the last major upgrading was completed. In 1987 it was decided to renew the treatment plant for at least another 20-30 years of operation and to upgrade the biological process to include nitrogen reduction. A 7 year plan covering some 18 items with a total investment cost of approximately 120 MSEK was set in action during 1987. The aim was to raise the cost efficiency by introducing modern techniques, new machinery, a better working environment and a better understanding of the processes used. The need to keep the plant in operation during reconstruction work has caused difficulties, delays and unforseen costs but a close cooperation between all parties concerned (operators, contractors, engineers and the regional environment administration) has solved most of the problems. Experiences so far include an improved effluent quality, a better cost efficiency, a healthier and more engaged operating staff. A research team has been engaged to develop and introduce a nitrogen reduction scheme in the activated sludge process. This has been a challenging and fruitful experience.

scholarly journals Renewable energy from biogas generated by sewage sludge – relationship between sludge volume and power generated

2008 ◽  
Vol 5 (2) ◽  
pp. 1
Author(s):  
Suzana Ramli ◽  
Aminuddin Mohd Baki ◽  
Muhamad Azmi Ayub ◽  
Suhaimi Abdul Talib ◽  
Ramlah Mohd Tajuddin ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Sewage Sludge ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Cost Effective ◽  
Anaerobic Digesters ◽  
Decomposition Of Organic Matter ◽  
Main Components ◽  
The Cost

Biogas is a product of decomposition of organic matter during the process of anaerobic digestion (AD). The main components are methane and carbon dioxide. The methane content in the biogas enables it to be used as fuel which can be converted to heat and electricity. The biogas generated by the anaerobic digesters has the potential to be redirected from the flaring facilities to renewable energy (RE) facilities. The biogas may then be used to generate electricity, which in turn can operate the sewage treatment plant (STP) itself. However, feedbacks from the sewerage industry indicated that heavy investments are needed for any RE initiatives on biogas generated by sewage sludge. In order to find the cost effective way of generating energy from biogas, fundamental relationships are necessary to enable development of prototype in the future. Thus, this paper presents a study to establish the relationship between the volume of sludge and the amount of power and energy that can be generated.

Cultivation of Chlorella Culturing with RO Brine - Primary Effluent Blended

2014 ◽  
Vol 955-959 ◽  
pp. 310-313
Author(s):  
Xiao Guang Zhao ◽  
Lu Zhao ◽  
Jian Wu Hao ◽  
Shi Jie Song
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Reverse Osmosis ◽  
Culture Medium ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
The Cost ◽  
Favorable Temperature

The paper introduced a new idea of culturing Chlorella with combined reverse osmosis (RO) brine concentrate and primary effluent from sewage treatment plant as culture medium. This method was expected to reuse wastewater resource and lower the cost of Chlorella cultivation. The biomass of Chlorella at different temperature and different proportion of RO brine (0-90% by volume) were measured. Results showed that Chlorella had an ability to grow in RO brine blended with primary effluent. The biomass of Chlorella in 30% of RO brine blended was the most. At a low temperature of 10℃, the effect of RO brine on Chlorella biomass was obvious, high temperature (30℃) inhibited the growth of Chlorella, 20℃ was the most favorable temperature for growth.

The Decision-Making Method of Model Municipal Wastewater Treatment Plant Based on Cost Model and Hierarchical Structure Model

2013 ◽  
Vol 444-445 ◽  
pp. 1732-1739 ◽  
Author(s):  
Bing Feng Xu ◽  
Dong Hua Liang ◽  
Yan Lv ◽  
Yue Xu
Keyword(s):  
Decision Making ◽  
Municipal Wastewater ◽  
Cost Model ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Municipal Wastewater Treatment ◽  
Analytic Hierarchy ◽  
Urban Sewage ◽  
The Cost

In this paper, three types of urban sewage treatment cost model, Oxidation ditch, ICEAS and A2/O are established respectively. The cost model and the analytic hierarchy process (AHP) were applied to sewage treatment plant for process optimization. It provides guidance for urban sewage treatment process decision-making.

scholarly journals DISPOSAL ALCOHOL WASTEWATER WITHOUT USING THERMAL TREATMENT

2020 ◽  
Vol 2020 (1) ◽  
pp. 43-44
Author(s):  
Vadim Krutikov ◽  
Ivan Semenov ◽  
Dmitriy Dubrovskiy
Keyword(s):  
Wastewater Treatment ◽  
Thermal Treatment ◽  
Treatment Process ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Biological Wastewater Treatment ◽  
Wastewater Treatment Process ◽  
The Cost

The possibility of withdrawing alcohol wastewater from thermal treatment to a sewage treatment plant was considered in this article. These measures can reduce the cost of fuel used for thermal treatment, as well as improve the quality of the biological wastewater treatment process

Analysis and balance of phosphorous removal from wastewater at urban wastewater treatment plant

2020 ◽  
Vol 15 (2) ◽  
pp. 142-151
Author(s):  
Peter Lukac ◽  
Lubos Jurik
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Wastewater Treatment Plants ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Phosphorus Recovery ◽  
Anaerobic Sludge ◽  
Biological Phosphorus Removal ◽  
The Mean

Abstract:Phosphorus is a major substance that is needed especially for agricultural production or for the industry. At the same time it is an important component of wastewater. At present, the waste management priority is recycling and this requirement is also transferred to wastewater treatment plants. Substances in wastewater can be recovered and utilized. In Europe (in Germany and Austria already legally binding), access to phosphorus-containing sewage treatment is changing. This paper dealt with the issue of phosphorus on the sewage treatment plant in Nitra. There are several industrial areas in Nitra where record major producers in phosphorus production in sewage. The new wastewater treatment plant is built as a mechanicalbiological wastewater treatment plant with simultaneous nitrification and denitrification, sludge regeneration, an anaerobic zone for biological phosphorus removal at the beginning of the process and chemical phosphorus precipitation. The sludge management is anaerobic sludge stabilization with heating and mechanical dewatering of stabilized sludge and gas management. The aim of the work was to document the phosphorus balance in all parts of the wastewater treatment plant - from the inflow of raw water to the outflow of purified water and the production of excess sludge. Balancing quantities in the wastewater treatment plant treatment processes provide information where efficient phosphorus recovery could be possible. The mean daily value of P tot is approximately 122.3 kg/day of these two sources. The mean daily value of P tot is approximately 122.3 kg/day of these two sources. There are also two outflows - drainage of cleaned water to the recipient - the river Nitra - 9.9 kg Ptot/day and Ptot content in sewage sludge - about 120.3 kg Ptot/day - total 130.2 kg Ptot/day.

Changes of microbial indices of water quality in the Vistula and Brda rivers as a result of sewage treatment plant operation

2008 ◽  
Vol 37 (2) ◽  
Author(s):  
Maciej Walczak
Keyword(s):  
Water Quality ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Sewage Treatment Plants ◽  
Plant Operation ◽  
Treated Sewage ◽  
Microbiological Parameters ◽  
Microbial Indices

Changes of microbial indices of water quality in the Vistula and Brda rivers as a result of sewage treatment plant operationThis paper reports the results of studies of microbiological changes in the water quality of the Vistula and Brda rivers after the opening of sewage treatment plants in Bydgoszcz. The study involved determining the microbiological parameters of water quality. Based on the results obtained, it was found that the quality of the water in both rivers had improved decidedly after the opening of the plants, although an increased number of individual groups of microorganisms was found at the treated sewage outlet from one of the plants.

Properties of Nocardiaform Actinomycetes Isolated from a Sewage Treatment Plant of Southern Part of Miyagi.

2000 ◽  
Vol 36 (4) ◽  
pp. 161-171
Author(s):  
KENITSU KONNO ◽  
NAOKI ABE ◽  
YOSHIRO SATO ◽  
KOJI AKAMATSU ◽  
MAKOTO ABE ◽  
...  
Keyword(s):  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant
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