Analysis of Requirement for Sewage Sludge Incineration

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F14%3APU110194" target="_blank" >RIV/00216305:26210/14:PU110194 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.3303/CET1439106" target="_blank" >http://dx.doi.org/10.3303/CET1439106</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3303/CET1439106" target="_blank" >10.3303/CET1439106</a>

Result language

angličtina

Original language name

Analysis of Requirement for Sewage Sludge Incineration

Original language description

Municipal wastewater treatment plants have produced about 160,000 t/y to 210,000 t /y (Eurostat, 2014) of raw sludge (expressed as dry ratio) in the Czech Republic. Considering the calorific value of the dry sludge is about 15 GJ/t, it represents the caloric content in the raw sludge of about 3,000 GJ/y. In many cases, the processing of the separated raw sludge includes the process of anaerobic fermentation, which generates biogas for energy utilization. In the Czech Republic, the produced sludge, mainly digested and dewatered, is used for land reclamation or compost production or it is landfilled. However, the incineration of sludge is a way that is able to significantly eliminate the risks associated with levels of undesirable minor components contained in sludge. Incineration of sludge is a modern technology which is considered as a modern basis in dealing with sludge issues. The calorific value of the raw sludge or product of anaerobic fermentation is significantly reduced to values from 1 to 3 GJ/t due to water content of about 65 to 70 % after mechanical dewatering and late and problematic of mechanical dewatering is summarised. The aim of this paper is to determine under which conditions the sludge incineration process is energy self-sufficient. The paper presents results of a series of balance calculations to determine the optimum rate of drying of raw or anaerobically pre-treated sludge so that the caloric content of the combusted material is sufficient to meet the energy needs of its own technology for energy production intended for export. It is shown that energy production can be significantly affected if the partial drying of the material after mechanical dewatering by waste heat from other operations becomes available. This article builds on the contribution of Fryba (2013) and discusses the conditions of sewage sludge incineration in detail. These are landfilling, energy recovery (incineration, anaerobic digestion, pyrolysis, etc.) or mechanical and b

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

10511 - Environmental sciences (social aspects to be 5.7)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proceedings of the 17th CONFERENCE ON PROCESS INTEGRATION, MODELLING AND OPTIMISATION FOR ENERGY SAVING AND POLLUTION REDUCTION PRES 2014

ISBN

978-88-95608-30-3

ISSN

2283-9216

e-ISSN

—

Number of pages

6

Pages from-to

631-636

Publisher name

AIDIC Servizi S.r.l.

Place of publication

Milano, Italy

Event location

Prague

Event date

Aug 23, 2014

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000346757600106