The technology and the produced fertilizers were thoroughly investigated and tested by
professionals, academic institutes and by the end users (local farmers). There are many
academic publications in professional literature about our technology.
Evaluation of sewage sludge for further nutrient conservation
Viktors Vibornijs1a*, Alīna Rimkus1b, Laila Dubova2c, Dmitrijs Bekkers3d, Natalya Strunnikova3e, Oleg Kassien3f, Ina Alsiņa2g, Olga Muter1h
1University of Latvia, Institute of Microbiology & Biotechnology, 1 Jelgavas Str., Riga LV-1004, Latvia; 2Institute of Soil and Plant Research Latvia University of Agriculture, 2 Liela Str., Jelgava LV-3001, Latvia; 3Earth Revival, Ltd, Maskavas Str. 57-3, Riga LV-1003, Latvia
e-mail: a[email protected], b[email protected], c[email protected], dinfo@earth- revival.com, e[email protected], f[email protected], g[email protected], h[email protected]
Keywords: dehydrogenase activity; OxiTop® C; peat; respiration intensity; sewage sludge.
Abstract. Conversion of organic-containing sludges to a high value fertilizer is considered to be a rational solution from a recycling point of view. Aerobic respiration could serve as an indicator of stability and maturity of the treated sewage sludge (SS). The aim of this study was to characterize two SS samples, obtained from different wastewater treatment plants („D” and „J”), i.e, at the initial stage of treatment, alone and with amendments. Two methods for estimation of microbial respiration, as well as dehydrogenase activity were used. The SS-J demonstrated the higher microbial biodegradation activity, as compared to SS-D. In experiments with OxiTop® device, statistically significant (p<0.05) differences of the pressure drop between SS-J and SS-D have been revealed. Addition of peat to SS resulted in a more intensive pressure drop, compared to non-amended SS, i.e.,
-145 hPa vs. -76 hPa for SS-D and -199 hPa vs. -180 hPa for SS-J, respectively. The obtained results represent a methodical approach for characterization of raw SS in order to evaluate the amount of aerobically degradable organic substances and intensity of their oxidation. Further research is needed for highlighting the mechanisms responsible for interrelation of respiration intensity, bacterial community activity and other metabolic changes towards SS stabilization.
More Related articles:
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Oleg Kassien; Gulzhan Daumova; Vadim Litvinov; Natalya Seraya; Zhanat Idrisheva - Recycling of Municipal Sewage Sludge in Sustainable Logistics Systems in the
Focus of Information Technology Management. JITM. 2022-09 | Journal article DOI:
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article. DOI: 10.31520/ei.2022.24.2(83).17-28 - Improvement of the Quality of the Human Environment by Transporting and
Stabilizing Sewage Sludge for Further Processing. Lecture Notes in Mechanical
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4_44 - ІННОВАЦІЙНЕ ВИРІШЕННЯ ПРОБЛЕМИ НЕЙТРАЛІЗАЦІЇ ОСАДУ СТІЧНИХ
ВОД. ГРААЛЬ НАУКИ. 2021-04-07 | Journal article DOI: 10.36074/grail-of-
science.02.04.2021.005 - All-Russian scientific conference with international participation "Innovative
technologies for environmental protection in the modern world". 2021-03 |
Conference paper. Part of ISBN: 978-5-7882-3028-3 - Evaluation of sewage sludge for further nutrient conservation. Key Engineering
Materials. 2020 | Book. DOI: 10.4028/www.scientific.net/KEM.850.166 EID: 2-s2.0-
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Journal article. DOI: 10.15159/ar.20.040. CONTRIBUTORS: L. Dubova; N.
Strunnikova; N. Cielava; I. Alsina; O. Kassien; A. Bekker
Main patents
EP (EU, Turkey etc.)
UNITS AND TECHNOLOGICAL LINE FOR PROCESSING MUNICIPAL SEWAGE
SLUDGE AND ORGANIC WASTE FROM AGRICULTURE, FOOD AND
PROCESSING INDUSTRIES. 2022-02-09 | Patent. LENSID: 146-706-079-342-379.
URI: lens.org/146-706-079-342-379 PAT: EP 3950646 A1
EA Patent organisation
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DISPOSAL. 2021-09-16 | Patent. LENSID: 094-994-634-828-998. URI: lens.org/094-
994-634-828-998 PAT: EA 038575 B1
UkrPatent
СПОСІБ УТИЛІЗАЦІЇ ОСАДУ СТІЧНИХ ВОД, ЗАБРУДНЕНИХ ВАЖКИМИ
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TRADEMARKS
WIPO TM
https://drive.google.com/file/d/11mx7bNXVV_QkHzFgZTAEHf82jSeDLe0p/view?usp=drivesdk
GB TM:
https://drive.google.com/file/d/11soXty2VaQFiPMH-s4rSO0yQA9mwVuDy/view?usp=drivesdk
US TM:
https://drive.google.com/file/d/1QiS6_dnGwtbChh3zHwpA0qSpC9F1SoGg/view?usp
Ukraine TM:
https://drive.google.com/file/d/1-XgyJMUewi2xfMnlAxtakIosWk7-uOg_/view?usp=drivesdk
EU research projects
The European Regional Development Fund projects:
1) Innovative Technology for Fast Sewage Sludge Recycling into Biological Fertiliser,
2019-04 to 2020-06
2) Development of an adjustable, human and environmentally safe hermetic system
for transporting biohazardous materials with high viscosity, 2020-10 to 2022-03
3) Transonic cavitation treatment of viscous substances for their homogenisation,
disinfection and production of liquid organic fertilisers, based on sludges, silts,
bacteria and algae concentrates, 2022-11 to 2024-03
