This is mainly because the methane content in the biogas digester is too low and the amount of miscellaneous gas is too high. There are two reasons for this: First, there is too much air left in the original seal; Second, the start is not smooth, the common is the lack of inoculum sludge, a feed too much, causing acid accumulation, light production waste gas. If it is the former, the gas may be evacuated and collected again at the end of the furnace at a pressure of 3 to 4 kPa. If the latter, then add wood ash and water to regulate the pH or add the biogas or biogas residue of the old biogas digester, and let the gas deflate, and then collect it again and again until it improves, and pay attention not to blindly feed.
SICHUAN UNIWELL BIOTECHNOLOGY CO.,LTD. , https://www.uniwellbio.com