Production of biogas at wastewater treatment plants and its further application

Abstract

Abstract. This article covered a wide range of questions on the topic of production and use of biogas as alternative energy source. Biogas is produced by anaerobic digestion of biomass due to the breakdown of fats, proteins and carbohydrates, which constitute the bulk of organic matter. The article describes the most common methods of biogas production, their stages and characteristics. In addition, the article describes some of the possible areas of application of biogas on example of different countries. The article also provides information about key environmental and economic benefits in the case of use of biogas: prevention of methane emissions and lower emissions of carbon monoxide and nitrogen oxides into the atmosphere; the possibility of using secondary raw materials to generate electricity.

Bioreactor for wastewater treatment

“…However, only aerobic mode is ensured with partial oxidation of organics and nitrification; denitrification is weak. Actual capacity is 10 cubic meters per day with significant season ( Figure 3) and daily flow irregularity; actual HRT is 15.5 that might be enough for required biochemical processes [3,4]. Analyses of treated water samples (Table 1) showed occasional excess of requirements for nitrogen compounds, phosphorus and BOD.…”

“…Washing of media and thin-layer modules  Washing of dead biomass on the media;  Increase of MLSS;  Reduction of biomass flow-away. 4 Adjustment of aeration system and concentration of dissolved oxygen  Reduction of media washing intensity;  Improvement of oxygen mode. 5…”

Qualitative and quantitative characterization of municipal solid waste and the unexploited potential of green energy in Tunisia

“…This analysis used to identify the energy of the region and to vindicate the urgent need to implement of profitable projects given the availability of raw materials. 2017Livestock slaughterhouses 38 Karaca and Öztürk (2017) Green leaves 100 Bowan and Tierobaar (2014) Poultry slaughterhouses 180 Makisha and Semenova (2018), Eriksson et al (2017) Catering activities 60 Ogur and Mbatia (2013), Oyiwona et al (2018) Manure 60 Kigozi et al (2013), Tatàno et al (2017) Solid and liquid droppings 70 Kumar et al (2017) Agricultural waste 60…”

Current Status and Review of Waste-to-Biogas Conversion for Selected European Countries and Worldwide

“…The same impact on soil pollution as in intensive livestock farming is also encountered in the treatment of sewage sludge and sludge arising from wastewater processing, where the impact of negative effects may be immediate or delayed, depending mainly on a waste disposal method or waste management method [7,14,19,37].…”