大型沼气工程生态应用关键技术研究

本文系统分析了大型沼气工程整个能量与物质循环过程的几个关键环节,包括原料的收集、原料配制与预处理、厌氧消化、好氧水处理、沼气的净化贮存和输送以及沼渣、沼液无害化处理及其在农作物上的施用等.将收集好的原料先进行短化和去杂处理,按照一定的条件再进行配制;配好以后选择适宜的发酵条件在消化器中进行厌氧消化产生沼气;沼气产生以后必须设法脱除沼气中的水和H2S,水脱除通常采用脱水装置进行,H2s的脱除通常采用脱硫塔,内装脱硫剂进行脱硫.试验表明,沼渣与沼液有促进作物生长、提高作物品质、增强作物抵抗病虫害的功用.

Key technology for ecological application of large-scale biogas project

Key processes of whole energy and substance recycling for large-scale biogas project includes collection and pretreatment of raw materials, anaerobic digestion, aerobic water disposal, purging, deposition and transportation of biogas, innoxious treatment of residue fluid and sludge, and crop application. Raw material configuration follows certain conditions after processing and purging. Then they are put into digestion tanks for biogas production under appropriate fermentation condition. Water and hydrogen sulfide (H₂S) must be removed from the gas. Water is usually removed by installment of dehydrates and H₂S is removed by desulfate temple filled with desulfurizer. The residue fluid and sludge can promote crop growth, improve crop quality and increase crop resistance to disease and pests.