Method for promoting start-up of anaerobic reactor based on conductive nano-material

Abstract

The invention discloses a method for promoting start-up of an anaerobic reactor based on a conductive nano-material. The method utilizes the conductive nano-material to promote start-up of the anaerobic reactor, and the method comprises the following steps: preparing conductive nano-material composite anaerobic activated sludge; and inoculating the prepared conductive nano material composite anaerobic activated sludge into an anaerobic reactor according to the volume concentration of 5-18gVSS / L, and starting the anaerobic reactor. The preparation method of the conductive nano-material composite anaerobic activated sludge comprises the following steps: adding a conductive nano-material into deionized water, and carrying out ultrasonic dispersion to prepare a conductive nano-material dispersion solution; and adding the prepared conductive nano-material dispersion solution into anaerobic activated sludge, and conducting stirring for 22 hours to obtain the conductive nano-material composite anaerobic activated sludge. According to the invention, the organic load tolerance of the anaerobic reactor can be improved, the stable and rapid starting of the anaerobic reactor under high organic load is enhanced, and the application range is wide.

Description

technical field [0001] The invention relates to the technical field of wastewater anaerobic biological treatment, in particular to a method for promoting the start-up of anaerobic reactors based on conductive nanomaterials. Background technique [0002] Anaerobic biological treatment technology is a process in which anaerobic and facultative anaerobic microorganisms convert organic matter into methane and carbon dioxide under anaerobic conditions, also known as anaerobic digestion; generally speaking, there are more complex organic materials in wastewater, It is degraded by anaerobic digestion in four stages: [0003] (1) Hydrolysis stage: Due to its large molecular size, high-molecular organic matter cannot directly pass through the cell wall of anaerobic bacteria. It needs to be decomposed into small molecules by extracellular enzymes in vitro. Typical organic substances in wastewater such as cellulose are cellulose Enzymes decompose into cellobiose and glucose, starch is...

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Problems solved by technology

[0008] Patent CN108017148A discloses a rapid cultivation step including introducing strains and anaerobic particles; wherein, the rapid cultivation steps of anaerobic particles include: 1) selecting suitable anaerobic sludge for cultivation; COD load: According to the amount of sludge in the reactor cultivated in step 1), sludge COD load, and effluent COD and VFAs, gradually increase the influent COD load; 3) adjust the reflux ratio according to the influent concentration achieved in step 2) The ratio of water flow to effluent flow is equal to 1:0.6-0.8 to reduce the impact of influent load on the system, and at the same time adjust the alkalinity of the mixed solution to reduce the consumption of alkali; the entire start-up time is 20-25 days, but it uses anaerobic Sludge promotes the start-up of the anaerobic reactor, and the start-up time is still long, and the introduction of chemicals, etc. has a secondary pollution risk, and the action time is relatively short

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