Hong Kong Sludge Treatment Facilities

2010 ◽  
Vol 5 (2) ◽  
Author(s):  
Echo Leong ◽  
Alex Kwan ◽  
Priscilla Yuen
Keyword(s):  
Hong Kong ◽  
Sewage Treatment ◽  
Treatment Technology ◽  
Sludge Treatment ◽  
Sludge Disposal ◽  
Design Build ◽  
Treatment Facilities ◽  
Dewatered Sewage Sludge ◽  
Fluidized Bed Incineration ◽  
Selection Of

At present, all dewatered sewage sludge generated by sewage treatment works (STW) is disposed of at landfills. This current practice of sludge disposal at landfill is not sustainable from both environmental and technical perspectives. The Hong Kong sludge contains high content of chloride due to use of seawater flushing in most of the Hong Kong areas and Hong Kong is a densely populated city. This unique condition has limited its selection of the alternative sludge treatment technology. The Sludge Treatment Facilities (STF) adopting fluidized bed incineration technology is a sustainable alternative for sludge disposal in Hong Kong. The design capacity of the STF is 2000 wet tonnes per day. The STF will be implemented under a Design-Build-and-Operate contract arrangement with a contractual operation period of 15 years and is scheduled to be commissioned by 2012.

Recycling to Soils: a Sustainable Way of Sludge Disposal and its Practice in China

2011 ◽  
Vol 183-185 ◽  
pp. 1417-1422 ◽  
Author(s):  
Xiang Sheng Cao ◽  
Xue Jing Meng ◽  
Xue Zheng Meng
Keyword(s):  
Sewage Treatment ◽  
Land Application ◽  
Sludge Treatment ◽  
Sewage Treatment Plants ◽  
Sludge Disposal ◽  
Successful Case ◽  
Urgent Task ◽  
Before And After ◽  
Treatment And Disposal ◽  
Disposal Problem

With the booming construction of sewage treatment plants aiming at environmental protection, China has to face an emerging urgent task to address the sludge treatment and disposal problem. However there is a big controversy in China about the sludge treatment and disposal strategies. Some scientists suggest incinerating, while others insist on landfilling. In this paper, from the perspective of sustainable development and cyclic economy, a detailed analysis of nutrients cycle mainly related to nitrogen and phosphate before and after industrialization was made and a view that sludge should go back to soils to re-establish a sound nutrients cycle was put forward. Then the feasibility for sludge recycle to soils was discussed and some land application methods for sludge were introduced. At last, a successful case of producing compounded fertilizer from dewatered sludge in Northeast China was described in detail.

Analysis of Advantages and Disadvantages of Sewage Treatment Technology and its Application in Rural Areas of Beijing

2011 ◽  
Vol 71-78 ◽  
pp. 4774-4777
Author(s):  
Ying Li ◽  
Jing Zhou
Keyword(s):  
Rural Areas ◽  
Sewage Treatment ◽  
Implementation Process ◽  
Treatment Technology ◽  
Application Range ◽  
Advantages And Disadvantages ◽  
Treatment Technologies ◽  
Treatment Facilities ◽  
Specific Implementation ◽  
Current Stage

At the current stage, sewage treatment technologies in rural areas of Beijing are applied frequently, they have their own advantages and disadvantages in the specific implementation process. Combining with the recent investigation of operation management of sewage treatment facilities in rural areas of Beijing, analyze advantages and disadvantages of rural sewage treatment technology and its application range in Beijing, aiming at provide a reference on the application of sewage treatment technology in rural areas of Beijing.

THE INTENSIFICATION OF THE PROCESS OF SLUDGE DEWATERING OF URBAN SEWAGE

2018 ◽  
Vol 8 (2) ◽  
pp. 15-19
Author(s):  
Svetlana A. POGREBNYAK ◽  
Alevtina F. KOLOVA ◽  
Tatyana Ya. PAZENKO
Keyword(s):  
Sewage Treatment ◽  
Wastewater Sludge ◽  
Urban Wastewater ◽  
Sludge Dewatering ◽  
Urban Sewage ◽  
Effi Ciency ◽  
Treatment Facilities ◽  
The Right ◽  
Pollute Groundwater ◽  
Selection Of

Urban wastewater sludge is highly humid, large and poorly dehydrated. Dehydration of sludge in natural conditions has a number of shortcomings: low effi ciency, sludge areas require huge land areas, worsen the ecological situation, pollute groundwater, soil, etc. One way to eliminate the problem and improve the effi ciency of sludge dewatering in urban wastewater is to switch to mechanical dehydration using fl occulants. The work is devoted to the selection of the most eff ective fl occulant and was carried out on the natural sediments of the right-bank treatment facilities in Krasnoyarsk and the sewage treatment plants in the sett lement of Emelyanovo. The experiment showed that fl occulants Praestol 851BC and Zetag 7485 at a dose of 3 kg / t dry matt er of the precipitate have the greatest eff ectiveness.

The Role of Strategies in the Development of Large Sewage Treatment Works

1988 ◽  
Vol 20 (4-5) ◽  
pp. 199-207
Author(s):  
Paul Lowe
Keyword(s):  
Sewage Treatment ◽  
Development Plan ◽  
Ideal Solution ◽  
The Third ◽  
Sludge Disposal ◽  
Treatment Facilities ◽  
Method Of Evaluation ◽  
Sewerage Network

The development of three strategies covering the three largest sewage treatment works owned and operated by Yorkshire Water is described. The first deals with the problems of sludge disposal in a large urban conurbation containing 51 sewage works and producing 75,000 dry tonnes of sludge per annum. The second describes the advantages of centralising sewage treatment facilities at larger works where the need to invest in the sewerage network is limited. The third deals with the method of evaluation used to derive the development plan for a large works at Sheffield. It assumes that an ‘ideal' solution can be achieved using a ‘greenfield site' concept and compares this with the more pragmatic solution of renovation.

ANAEROBIC SEWAGE TREATMENT TECHNOLOGY IN LATIN-AMERICA: A SELECTION OF 20 YEARS OF EXPERIENCES

2007 ◽  
Vol 2007 (13) ◽  
pp. 5208-5228 ◽  
Author(s):  
Eugenio Giraldo ◽  
Miguel Pena ◽  
C. Chernicharo ◽  
J. Sandino ◽  
A. Noyola
Keyword(s):  
Latin America ◽  
Sewage Treatment ◽  
Treatment Technology ◽  
Selection Of

Prospect of Sludge Treatment Technology in Tianjin

2013 ◽  
Vol 765-767 ◽  
pp. 2916-2921
Author(s):  
Dong Gang Han ◽  
Chao Li ◽  
Xin Hua Zhao
Keyword(s):  
Sewage Treatment ◽  
Current Situation ◽  
Municipal Sewage ◽  
Systematic Research ◽  
Proper Treatment ◽  
Treatment Technology ◽  
Sludge Treatment ◽  
Sewage Plant

As the sewage treatment keeps increasing every year, the sludge output from municipal sewage plant increases dramatically. The emission of the sludge without proper treatment pollutes the water and the atmosphere again. It not only slows down the effectiveness of sewage treatment systems, but also threatens the environment and humans activity. In this paper, the current situation of sludge treatment was explored. Based on the systematic research on sludge treatment of municipal sewage plants in Tianjin, some current problems were pointed out. The advices about sludge treatment of municipal sewage plant in Tianjin are outlined.

scholarly journals Retechnologization of biological sewage water treatment facilities using mathematical modelling

2021 ◽  
Vol 274 ◽  
pp. 08012
Author(s):  
Liliya Khisameeva ◽  
Runar Abitov ◽  
Ramis Alimov
Keyword(s):  
Water Treatment ◽  
Sewage Treatment ◽  
Sewage Water ◽  
Improve Energy Efficiency ◽  
Treated Sewage ◽  
Treatment Facilities ◽  
Sewage Water Treatment ◽  
The Cost ◽  
Biological Treatment System ◽  
Selection Of

The efficiency of sewage treatment plants is an urgent problem of the designed and operating stations. In modern conditions, efficiency is understood as the operation of facilities in which operating costs are minimized, facilities provide standard cleaning, and the company implements measures to modernize and improve energy efficiency and trouble-free operation. The article deals with the comparative analysis and selection of the most optimal scheme of biological sewage water treatment of existing sewage water treatment plants. The indicators of the efficiency of functioning and permissible loads on treatment facilities in the design of aeration tanks for biological sewage water treatment are determined. The results served as the basis for the creation of a mathematical model, with the help of which it is possible to calculate the parameters of the biological treatment system and optimize the process of biological sewage water treatment at existing treatment facilities. Mathematical modeling allows you to reduce the cost of designing and operating treatment facilities, to guarantee the degree of treatment in accordance with the requirements and standards for the discharge of treated sewage water into a reservoir for fisheries purposes.

Bacteriological Evaluation of Composting Systems in Sludge Treatment

1999 ◽  
Vol 40 (7) ◽  
pp. 165-170 ◽  
Author(s):  
Ahmad M. Shaban
Keyword(s):  
Sewage Treatment ◽  
Faecal Coliform ◽  
Sludge Treatment ◽  
Natural Draft ◽  
Sludge Disposal ◽  
End Of Treatment ◽  
Forced Aeration ◽  
Composting Systems ◽  
Bacteriological Evaluation ◽  
Faecal Streptococci

Sludge disposal was considered as a serious problem to the authorities. Thus, the treatment of sludge resulting from sewage treatment plants to remove pathogenic microorganisms and to improve its impact on the environment was considered as the main objective of several investigators. Composting is one of the methods of sludge treatment. Different systems of composting (static pile, windrow and natural draft) were applied and evaluated bacteriologically. Faecal coliform and salmonellae were removed completely during the first two weeks in case of forced aeration, but the former are still present till near the end of experiment with natural aeration. For the natural draft system with sawdust base, faecal coliform reduction increased up to 100% after 7 weeks, while faecal streptococci and coliphage decreased gradually and were removed completely at the end of treatment. Salmonellae disappeared after a few days from starting treatment. In case of alkaloids addition (cement and lime), the tested organisms reached acceptable levels with any concentration of alkaloids. Coliphage and faecal streptococci survived till the end of treatment. So, from the previous results it is clear to say, coliphage and faecal streptococci were more resistant to the composting processes than other organisms.

Removal of antibiotics from wastewater by sewage treatment facilities in Hong Kong and Shenzhen, China

2008 ◽  
Vol 42 (1-2) ◽  
pp. 395-403 ◽  
Author(s):  
A. Gulkowska ◽  
H.W. Leung ◽  
M.K. So ◽  
S. Taniyasu ◽  
N. Yamashita ◽  
...  
Keyword(s):  
Hong Kong ◽  
Sewage Treatment ◽  
Treatment Facilities
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