scholarly journals Selection of Schemes about Municipal Sludge Treatment and Disposal in Shaoguan City

2015 ◽  
Vol 05 (01) ◽  
pp. 9-12
Author(s):  
飞 贺
Keyword(s):  
Municipal Sludge ◽  
Sludge Treatment ◽  
Treatment And Disposal ◽  
Selection Of

Application research of municipal sludge treatment and disposal technology

2020 ◽  
Vol 567 ◽  
pp. 012023
Author(s):  
Qian Zeng ◽  
Nvzhi Tang ◽  
Hui Chen ◽  
Rui Xiao ◽  
Jinghui Gong
Keyword(s):  
Municipal Sludge ◽  
Application Research ◽  
Sludge Treatment ◽  
Treatment And Disposal

scholarly journals Study on Extracellular Polymeric Substances (EPS) Extraction Method of Lhasa Municipal Sludge

2020 ◽  
Vol 2 (2) ◽  
Author(s):  
Yuhang Fei ◽  
Gaihua Liu ◽  
Lincong Wang ◽  
Jian Lei ◽  
Lei Zhang
Keyword(s):  
Carbon Source ◽  
Extracellular Polymeric Substances ◽  
Extraction Methods ◽  
The Other ◽  
Municipal Sludge ◽  
Sludge Treatment ◽  
Treatment And Disposal ◽  
Main Components ◽  
Microscopic Morphology ◽  
Better Than

Sludge contains large number of EPS and the main components are protein, polysaccharide, hemic acid and so on, which is a great kind of carbon source. Therefore, using a method to extract the EPS and reflux to the biochemical tank can not only provide sufficient carbon source for microorganisms, but also solve the problem of sludge treatment and disposal in sewage plants. This passage compared five different extraction methods to study the extraction effect of EPS of Municipal Sludge. The results showed that the content of EPS components obtained by UN method was higher than that of the other four methods, which indicated that the UN method was better than the other four methods in extracting EPS; Through the comparison and analysis of the SCOD content and microscopic morphology of sludge EPS, it was found that the SCOD content obtained by UN method was the highest, and the corresponding sludge flocculant morphology was destroyed more thoroughly, so the best method was UN method.

Treatment and Quality of Sewage Sludge in Germany - Results of a Survey

2007 ◽  
Vol 2 (1) ◽  
Author(s):  
A. Meda ◽  
C. Schaum ◽  
M. Wagner ◽  
P. Cornel ◽  
A. Durth
Keyword(s):  
Sewage Sludge ◽  
Treatment Process ◽  
Wastewater Treatment Plants ◽  
Current Status ◽  
Sludge Treatment ◽  
Sewage Sludge Treatment ◽  
Treatment And Disposal ◽  
German Association ◽  
Entire Treatment

TIn 2004, the German Association for Wastewater, Water and Waste (DWA) carried out a survey about the current status of sewage sludge treatment and disposal in Germany. The study covered about one third of the wastewater treatment plants and about two thirds of the entire treatment capacity (expressed in population equivalents) in Germany. This provides an up-to-date and representative database. The paper presents the most important results regarding sludge treatment, process engineering, current disposal paths and sewage sludge quality.

Sludge Treatment and Disposal Systems for Rural Areas in Germany

1993 ◽  
Vol 27 (9) ◽  
pp. 159-171 ◽  
Author(s):  
Eberhard Steinle
Keyword(s):  
Sewage Sludge ◽  
Rural Areas ◽  
Public Awareness ◽  
Sewage Treatment ◽  
Treatment Needs ◽  
Sludge Treatment ◽  
Sewage Treatment Plants ◽  
Sewage Purification ◽  
Treatment And Disposal ◽  
Nitrogen Phosphorus

First an overview of the systems currently in use and being discussed for sludge treatment is presented will) particular emphasis on distinguishing between the object of the system (conditioning objective of the various phases in the system) and a system concept (concept of various phases of the system in sequence to attain the disposal objective). More detailed information is given as to the salient systems as used with smaller sewage treatment plants in rural areas, such as digestion, dewatering, hygienization, composting and thermal drying. A further item of discussion is how sludge treatment influences the sewage treatment process. For the critical emissions (nitrogen, phosphorus) demanded in Germany, and thus for the degree of sewage treatment required, the load of the sewage treatment system resulting from sludge treatment needs to be taken into account. Accordingly, operation of sludge treatment and sewage purification must always be harmonized. The extent of these return loads also limits the spatial centralization of the system phases; this applies in particular to smaller sewage treatment plants in rural areas. In conclusion, an attempt is made to present a perspective for the agricultural utilization of such sludge in Germany. Since the critical values for emissions have been further tightened by new regulations, thus considerably elevating the associated sophistication of monitoring techniques, it is to be expected that the use of sewage sludge in agriculture will also be further reduced in rural areas, especially since public awareness of emission control has considerably reduced the acceptance of sewage sludge as fertilizer.

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.

Evaluation of Municipal Sludge Drying and Dewatering with Respect to Sludge Volume Reduction

1990 ◽  
Vol 22 (12) ◽  
pp. 153-161 ◽  
Author(s):  
Maryla Smollen
Keyword(s):  
Moisture Content ◽  
Treatment Strategies ◽  
Vacuum Drying ◽  
Municipal Sludge ◽  
Moisture Retention ◽  
Sludge Dewatering ◽  
Sludge Treatment ◽  
Energy Inputs ◽  
Retention Characteristics ◽  
Sludge Drying

A number of parameters that influence sludge dewatering behaviour have been identified, but there is a lack of consensus which of these are of the greatest concern in sludge treatment strategies. Moisture retention characteristics were obtained from vacuum drying of centrifuged sludge samples to subdivide moisture into immobilised, physically and chemically bound fractions. Physically bound moisture is responsible for unsatisfactory dewatering by centrifugation. Polyelectrolyte releases some of the immobilised water, but simultaneously increases the physically bound moisture content which gives rise to large energy inputs during mechanical dewatering. Commonly used dewaterability measurements do not appear to be linked to moisture retention characteristics.

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