Anaerobic digestion processing method and apparatus in biogas production process

Abstract

The invention relates to a process and a device for methane anaerobic digestion treatment, which consists of two parts: anaerobic fermentation gas production, and slag discharge, solid-liquid separation and collection thereof; wherein, the anaerobic fermentation gas production process comprises feed manner, process arrangement, the closure reflux of strains, prolonged fermentation gas production time of organic solids, and the like; the processes of the slag discharge, solid-liquid separation and collection thereof comprises low point fall slag discharge, hydraulic agitation slag discharge, strengthened solid-liquid separation, circulation sedimentation separation, organic filtering material filtering and separation, filtering and draining combined separation, and the like; and the device comprises a honeycomb type anaerobic pool, a circular regulation pool and a circular sedimentation pool thereof. The process and the device have an unique feed manner, an effective slag discharge way, full and strengthened solid-liquid separation, and organic solid recycling with high proportion, particularly, fermented gas production materials after the strengthened solid-liquid separation can be guaranteed, meanwhile, organic material recycling with high proportion and water discharge with low concentration can be realized. The process and the device can effectively combine new energy development, organic fertilizer production and the treatment for environment protection; besides, processes are simple and practical, thus being suitable for popularization.

Description

technical field [0001] The invention relates to an anaerobic digestion treatment method, in particular to an anaerobic fermentation device, an anaerobic digestion treatment method and equipment for environmental protection and joint effect of fertilizer in biogas production. Background technique [0002] Now the research on anaerobic digestion process of large and medium-sized biogas projects is a hot topic in the world and in China. At present, the anaerobic digestion process technology in China and the world is very mature, especially the basic process research, but in terms of application and comprehensive process research However, it is not as good as the former. Now the common anaerobic digestion process has two types: environmental protection type and energy type. The environmental protection type is to carry out strict pre-treatment of organic sewage, such as dry-dilution separation of aquaculture sewage, and anaerobic digestion of the dilute part. , the dry part is d...

AI Technical Summary

Problems solved by technology

This treatment method still does not have anaerobic digestion technology that can better take into account biogas production, organic fertilizer production and environmental protection treatment, and fails to take into account new energy development, environmental protection of sewage treatment and organic agriculture. The pertinence of its process is still Relatively simple

Images