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Search results for: QUALITY OF SEWAGE SLUDGE
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The quality of sewage sludge stabilized for a long time in reed basins
PublicationThe aim of the work was to determine changes of long-term sewage sludge quality stabilized in reed basins from 7-15 years. The following parameters were evaluated: dry matter and organic matter concentration, nitrogen, phosphorus, and selected heavy metal (Cd, Ni, Pb, Cr, Cu, Zn) fractions. The material for the investigations was collected from 4 reed basin systems (utilisated sewage sludge) located in conventional WWTPs in Denmark...
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The legal regulations of sewage sludge management
PublicationThe growing quantity of sludge, high costs of the altered version, as well as new legal adjustments needs more and more higher qualitative requirements, the necessity of search in sludge economy and new solutions. The paper contributes to the discusion about legal ways of sewage sludge managemant.
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Application of microwaves for sewage sludge conditioning
PublicationArtykuł dotyczy wpływu promieniowania mikrofalowego na odwadnianie osadów ściekowych. Przeprowadzono pomiary parametrów charakteryzujących podatność osadów ściekowych na odwadnianie: opór właściwy, czas ssania kapilarnego oraz zawartość suchej masy w osadzie po odwirowaniu. Stwierdzono poprawę odwadnialności osadów kondycjonowanych promieniowaniem mikrofalowym, zależną ilościowo od rodzaju preparowanych osadów. Zastosowanie podwójnego...
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Determination of metal content in sewage sludge and sewage sludge ash to find opportunities to use them in the construction industry
PublicationSewage sludge management is becoming an increasing problem in developed and developing countries. Due to their physicochemical properties (mainly high content of heavy metals) a safe method of utilization is sought. Considering environmental protection, energy recycling, reduction in use of the raw materials and the possibility of immobilization hazardous substances, the use of ashes in building materials becomes a very good way...
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Effect of sewage sludge properties on the biochar characteristic
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Experiences with utilisation of sewage sludge in reed beds
PublicationHydrofitowa metoda utylizacji osadów ściekowych polega na stosowaniu wielowarstwowych nawodnień osadami o niskiej zawartości suchej masy najczęściej w złożach tzrcinowych. W metodzie tej odwadnianie spowodowane jest odciekaniem wód oraz ewapotransiracją. Osady ściekowe w złożach trzcinowych ulegaja częściowej stabilizacji i higienizacji. Złoża trzcinowe zapewniają wysoki stopień odwodnienia osadów.
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Dewatering of Sewage Sludge Dewatering in Reed Systems
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Analytical and legislative challenges of sewage sludge processing and management
PublicationThis article presents the most popular methods of sewage sludge management and analytical techniques which could be a powerful tool in designing new sewage sludge management methods. Chemical analysis is also described as a vital point at the subsequent stages of technological processes control and sewage sludge quality assessment. It is also an instrument essential to maintaining control of processed sewage sludge introduced to...
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Modeling of entrained flow steam gasification of sewage sludge
PublicationProper management of sewage sludge becomes increasingly problematic due to legal requirements aiming at diminishing environmental impact, as well as rationalizing the utilization from the point of view of logistics. Steam gasification of sewage sludge can result in very good quality of the producer gas. So far, the works have been focused on the gasification in fixed bed gasifiers. However, this does not allow to take full advantage...
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The potential of raw sewage sludge in construction industry – A review
PublicationExcess sewage sludge produced in any municipal or industrial wastewater treatment plant becomes a serious problem due to its increasing amount. This increase is related to the improvement of treatment technologies, expansion of sewage systems and the development of new industrial plants. The implementation and development of new technologies related to the utilization of sewage sludge is currently based on treating it as a substrate....