Biogas slurry concentration system and method

Abstract

The invention discloses a biogas slurry concentration system and method. The biogas slurry concentration system comprises an original biogas slurry tank, an original conveying pump, an adjusting tank, a fine rack, an adjusting conveying pump, a primary raw water tank, a concentrated water tank, a primary conveying pump, a primary precise filter, a primary filtering membrane, a secondary raw water tank, a secondary conveying pump, a secondary precise filter, a secondary high-pressure pump, secondary material membrane separation equipment, a third raw water tank, a third conveying pump, a third precise filter, a third high-pressure pump, third material membrane separation equipment, a fourth raw water tank, a fourth conveying pump, a fourth precise filter, a fourth high-pressure pump, fourth high-pressure material membrane separation equipment, a fifth raw water tank, a fifth conveying pump, a fifth precise filter, a fifth high-pressure pump, fifth high-pressure material membrane separation equipment, a sixth raw water tank, a sixth conveying pump, a sixth precise filter, sixth material membrane separation equipment, an acid conveying pump, an acid precise filter and non-volatile acid solution storage equipment. By adopting the system, grading and high-magnification concentration of effective components in biogas slurry are achieved, and ammonia nitrogen can be completely extracted.

Description

technical field [0001] The invention relates to the technical field of biogas slurry resource utilization, in particular to a biogas slurry concentration system and method. Background technique [0002] Anaerobic fermentation of livestock and poultry manure will produce a large amount of biogas slurry, which is a high pollutant and cannot be directly discharged into the environment. The standard treatment through the construction of post-treatment facilities will greatly increase the construction and operation costs, so there is a serious consumption problem. In fact, biogas slurry is rich in nitrogen, phosphorus, potassium, amino acids, rich in trace elements, B vitamins, various hydrolytic enzymes, organic acids and humic acids and other biologically active substances. It is a good organic fertilizer and stimulates crops Growth, enhance crop resistance and improve product quality. Therefore, biogas slurry can be used as organic fertilizer to realize the secondary utilizat...

AI Technical Summary

Problems solved by technology

[0004] 1. The nutrients in the biogas slurry are not separated, but all the nutrients are concentrated together, and the nutrients in it cannot be used efficiently

[0005] 2. The concentration ratio of biogas slurry is low, and the content of active ingredients per unit volume is not high, which leads to high cost of long-distance transportation and cannot be applied in a wide range

[0006] 3. The subsequent evaporation process has a large initial investment and high operating costs

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