scholarly journals Changes imposed by pyrolysis, thermal gasification and incineration on composition and phosphorus fertilizer quality of municipal sewage sludge

2017 ◽  
Vol 198 ◽  
pp. 308-318 ◽  
Author(s):  
Tobias Pape Thomsen ◽  
Zsuzsa Sárossy ◽  
Jesper Ahrenfeldt ◽  
Ulrik B. Henriksen ◽  
Flemming J. Frandsen ◽  
...  
2013 ◽  
Vol 671-674 ◽  
pp. 2736-2741
Author(s):  
Yin An Ming ◽  
Tao Tao

To reuse municipal sewage sludge safely, experiment was carried out on grapefruit trees fertilized with composted sludge from Shiweitou Sewage Treatment Plant in Xiamen City of China, and a method was introduced of how to assess the environmental quality of grapefruit trees soil fertilized with sludge by Set Pair Analysis (SPA) model. The results showed that the soil in the surface layer (0-15cm) and the deeper layer (15-30cm) was less clean, and the environment of soil was not polluted. Thus it was feasible to use sludge as fruit fertilizer. The maximum service life of sludge for continuous land application was estimated by taking Cd as the limiting factor, which would provide scientific guide and technical support for safe land application of sludge.


2018 ◽  
Vol 45 ◽  
pp. 00022 ◽  
Author(s):  
Kamila Hrut ◽  
Tomasz Kamizela

The purpose of the research was to determine the possibility of using a magnetic field as a factor supporting the conditioning of municipal sewage sludge prepared using a chemical method. In order to condition the sludge, PIX 113 iron coagulant or Fe3O4 nanoparticles were used. Two types of organic flocculants: medium cationic Superfloc ® C-494 and high cationic Superfloc ® C-496 were also applied. For the various test combinations a capillary suction time test was performed, the specific resistance to filtration and the final filtration of the filter cakes were determined. For selected combinations, a quality of supernatants analysis was also performed, the measure of which was the COD values. The results show, that in the dual chemical conditioning method, the use of PIX 113 coagulant was more favorable than the nanoparticles Fe3O4. The influence of a magnetic field on the susceptibility to the dewatering of the tested sludge was variable, depending on process parameters such as the flow direction and flow rate through the solenoid. The type of polyelectrolyte used in the conditioning method with magnetic field action was also significant.


2019 ◽  
Vol 20 (2) ◽  
pp. 200-208 ◽  
Author(s):  
Izabela Bartkowska ◽  
Izabela Tałałaj ◽  
Paweł Biedka

Author(s):  
Suad Jaffar Abdul Khaliq ◽  
Ahmed Al-Busaidi ◽  
Mushtaque Ahmed ◽  
Malik Al-Wardy ◽  
Hesham Agrama ◽  
...  

2016 ◽  
Vol 85 ◽  
pp. 363-370 ◽  
Author(s):  
Barbara Kołodziej ◽  
Magdalena Stachyra ◽  
Jacek Antonkiewicz ◽  
Elżbieta Bielińska ◽  
Janusz Wiśniewski

Agronomie ◽  
2001 ◽  
Vol 21 (2) ◽  
pp. 169-178 ◽  
Author(s):  
Giovanni Gigliotti ◽  
Pier Lodovico Giusquiani ◽  
Daniela Businelli

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