Research on Ammonia and Methane Gas Emission from Composting Sewage Sludge Amoniako ir metano duj , i siskirian i kompostuojant nuotek dumbl , tyrimai

Sewage sludge treatment and disposal are related to climate change. Composting is the oldest and most natural form of recycling organic material. Carbon dioxide (CO2), methane (CH4) and nitrous oxide (NOx) are all by-products of the composting process. These three greenhouse gases contribute to global warming by absorbing radiation emitted by the earth. When the natural breakdown of organic materials is happening under optimum conditions, it produces primarily carbon dioxide, water vapour and heat. When the process is unbalanced in some way, other gases begin to be produced, some of which have objectionable odours (NH3). Odour and greenhouse gases management, then, is one of the primary motivators for optimizing our composting process. The article deals with composting sewage sludge from the experimental results of the investigation of CH4 and NH3. Article in Lithuanian Nuotek dumblas, jo apdorojimas ir saugojimas yra susij s su klimato kaita. Yrant organin ms med iagoms i siskiria ne tik nemalonaus kvapo duj , bet ir iltnamio efekt sukelian i duj (CO2, CH4, NOx). Biodegradacijos procesai vyksta ir natūraliai gamtoje ir dirbtinai – kompostuojant. Sudarant optimalias kompostavimo s lygas (C:N, aeravimas, pH ir dr gm ) bei naudojant priedus (ceolitas, durp s ir kt.) galima ma inti dujini ter al emisijas aplink . Straipsnyje nagrin jami kompostuojant nuotek dumbl gaut eksperiment rezultatai, tiriant CH4 ir NH3. Eksperimentui naudotas Vilniaus miesto komunalini nuotek valymo rengini perteklinis nuotek dumblas, nusausintas centrifugomis. Kaip papildomos med iagos naudotos ceolitas ir durp s. Kompostuota kompostavimo aik tel imituojan iuose renginiuose“. Straipsnis lietuvi kalba