Manufacturing method of sludge biomass compact briquette fuel

Abstract

The invention provides a manufacturing method of a sludge biomass compact briquette fuel. The traditional method has different weaknesses. The manufacturing method comprises the following steps: selecting the domestic sewage sludge as a main raw material; stacking the mixed material on a fermentation field to form a stack body, and spraying a deodorized fermentative bacteria liquid capable of promoting the rotting of the material on the surface of the stack body; spraying white-rot fungi liquid containing decomposed lignin and composite organism and having a function for absorbing the water and drying the stacked material on the surface of the stack body after the stack body is stacked for a first predetermined time, and deeply turning the stack body; turning the stack body one time every a second predetermined time until the moisture content of the stack body material is reduced to 30 percent, and ending the stacking fermentation process; adequately mixing the fermented dry material and the wood fiber biomass material by adopting the water content of the mixture of 18 percent as a benchmark, and extruding and forming the mixture. The method is simpler to operate, the technological parameters are stable and easy to control, the energy consumption is greatly reduced, no non-biomass additive is added, and the product is cleaner and more environment-friendly.

Description

technical field [0001] The invention relates to a method for treating sludge, in particular to a method for manufacturing dense briquette fuel from sludge biomass. Background technique [0002] Since the reform and opening up, my country's urban construction has developed rapidly, especially during the eleventh five-year period, the sewage treatment market has developed rapidly. In the past 30 years, the number of sewage treatment plants has increased from 37 to more than 2,800, and the sewage treatment capacity has increased from 640,000 tons per day to 128.67 million tons per day. The national urban sewage treatment rate has reached 73%. The rapid increase in sewage treatment capacity and treatment rate has also brought about a rapid increase in sludge production. By the end of 2010, the national urban sewage treatment volume reached 34.3 billion cubic meters, and the dewatered sludge production was close to 22 million tons. However, most of the sewage treatment plants ...

AI Technical Summary

Problems solved by technology

① Physical drying is mostly used for sludge drying, which consumes a lot of energy; ② Coal powder, black carbon or other non-biomass combustion aids need to be added after sludge drying; ③ Even if biological fermentation is used for sludge drying The energy consumption is reduced, but the biofuel produced still has the problem of incomplete drying and high moisture content (about 30%)

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