A method based on conductive nanomaterials to facilitate the start-up of anaerobic reactors

Abstract

The invention discloses a method for promoting the start-up of an anaerobic reactor based on conductive nanomaterials. The method uses conductive nanomaterials to promote the start-up of anaerobic reactors. The method includes the following steps: preparing conductive nanomaterial composite anaerobic activated sludge, and The prepared conductive nanomaterial composite anaerobic activated sludge is inoculated into the anaerobic reactor at a volume concentration of 5-18gVSS / L, and the anaerobic reactor is started; wherein, the conductive nanomaterial composite anaerobic activated sludge is prepared The method is as follows: adding the conductive nano material into deionized water for ultrasonic dispersion to prepare a conductive nano material dispersion solution; adding the prepared conductive nano material dispersion solution into anaerobic activated sludge and stirring for 22 hours to obtain a conductive nano material composite Anaerobic activated sludge. The invention can improve the organic load tolerance of the anaerobic reactor, strengthen the stable and rapid start-up of the anaerobic reactor under high organic load, and has wide application range.

Description

technical field [0001] The invention relates to the technical field of anaerobic biological treatment of wastewater, in particular to a method for promoting the startup of an anaerobic reactor 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; It is degraded by anaerobic digestion in four stages: [0003] (1) Hydrolysis stage: Due to its large molecular volume, macromolecular organic matter cannot directly pass through the cell wall of anaerobic bacteria, and needs to be decomposed into small molecules by extracellular enzymes outside the microorganism. Typical organic substances in wastewater such as cellulose are decomposed by cellulose Enzymes are decomposed into cellobiose and glucose, starch is decomposed into maltose and gluc...

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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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