scholarly journals The Air and Sewage Pollutants from Biological Waste Treatment

Processes ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 250
Author(s):  
Marta Wiśniewska ◽  
Mirosław Szyłak-Szydłowski

The mechanical-biological waste treatment plants (MBTP), which include the municipal waste biogas plants, have an important role in sustainable urban development. Some plants are equipped with a sewage pre-treatment plant, which is then directed to the sewerage system and the treatment plant. Others, on the other hand, have only a non-drainage tank. The parameters of technological sewage (TS) or processing technology could reduce sewage contamination rates. In addition to the quality of sewage from waste treatment plants, the emission of odours is also an important problem, as evidenced by the results obtained over the sewage pumping station tank. The conducted statistical analysis shows a significant positive correlation between odour concentration (cod) and volatile organic compounds (VOCs). Analysing the individual compounds, a high positive correlation was also found—the strongest being between H2S, NH3 and VOCs. In the case of sewage compounds, the insignificant correlation between P total and other parameters was found. For the rest of the compounds, the highest positive correlation was found between COD and BOD and N-NO2 and N-NH3 as well as COD and N-NO2. The dilution of sewage is only an ad hoc solution to the problem. Further work should be aimed at reducing sewage pollution rates. The obtained results indicate large pollution of technological sewage and a high level of odour and odorants concentration. The novelty and scientific contribution presented in the paper are related to analyses of various factors on technological sewage parameters and odour and odorant emission from TS tank at biogas plant processing municipal waste, which may be an important source of knowledge on the management of TS, its disposal and minimisation of emitted compound emissions.

Proceedings ◽  
2019 ◽  
Vol 16 (1) ◽  
pp. 42
Author(s):  
Marta Wiśniewska

The aim of this study was to analyse the work of the MultiRAEPro gas detector in terms of its application in monitoring odour emissions from biogas plants processing municipal waste constituting part of a mechanical–biological waste treatment plant. The obtained results provided the basis for formulating conclusions concerning the use of a gas detector in monitoring odour emissions from biogas plants processing municipal waste. The study results can be applied in practice in biogas plants processing municipal waste as well as in other municipal facilities.


1991 ◽  
Vol 9 (6) ◽  
pp. 553-564 ◽  
Author(s):  
V. Aivaliotis ◽  
T. Giannakopoulou ◽  
M. Gratsiou ◽  
D. Panagiotakopoulos

2018 ◽  
Vol 44 ◽  
pp. 00041
Author(s):  
Jolanta Fieducik

This article presents an innovative solution for drying waste in bioreactors on the example of the Municipal Waste Treatment Plant (ZUOK) in Olsztyn. Shredded mixed waste undergoes fermentation in bioreactors and produces heat for waste drying. Waste transported to the plant is divided into sorted waste which is recycled and mixed waste which is processed into different size fractions. Processed waste is used in the production of alternative fuel which can be burned in dedicated systems in cement plants or incineration plants. Around 5-15% of waste cannot be processed and is landfilled.


Resources ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 28
Author(s):  
Henning Wilts ◽  
Beatriz Riesco Garcia ◽  
Rebeca Guerra Garlito ◽  
Laura Saralegui Gómez ◽  
Elisabet González Prieto

The recently finalized research project “ZRR for municipal waste” aimed at testing and evaluating the automation of municipal waste sorting plants by supplementing or replacing manual sorting, with sorting by a robot with artificial intelligence (ZRR). The objectives were to increase the current recycling rates and the purity of the recovered materials; to collect additional materials from the current rejected flows; and to improve the working conditions of the workers, who could then concentrate on, among other things, the maintenance of the robots. Based on the empirical results of the project, this paper presents the main results of the training and operation of the robotic sorting system based on artificial intelligence, which, to our knowledge, is the first attempt at an application for the separation of bulky municipal solid waste (MSW) and an installation in a full-scale waste treatment plant. The key questions for the research project included (a) the design of test protocols to assess the quality of the sorting process and (b) the evaluation of the performance quality in the first six months of the training of the underlying artificial intelligence and its database.


1970 ◽  
Vol 27 (3) ◽  
pp. 256-262
Author(s):  
Denis Hayes

“Most of the politicians and businessmen who are jumping on the environmental bandwagon clearly do not have the slightest idea what they are getting into. They do not yet understand that we see this as a long and serious fight for a profound change in what this country is all about. They are talking about emission control devices on automobiles; we are talking about bans on automobiles. They are bursting with pride over plans for inadequate municipal waste treatment plants; we are challenging the ethics of a society that, with only seven per cent of the world's population, accounts for more than half of the world's annual consumption of raw materials.”


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