Biodegradable filter material biogas slurry filter and filtering method thereof

Abstract

The invention discloses a degradable filter material biogas slurry filter and a filtering method of the degradable filter material biogas slurry filter. The degradable filter material biogas slurry filter comprises a box body, wherein a floating filter material filling hole and a fixed filter material filling hole are formed at the top of the box body, a liquid inlet is formed at the middle part of the box body, and a slag hole is formed at the bottom of the box body; the liquid inlet divides the inner cavity into a floating filter material chamber at the upper part of the liquid inlet and a sedimentation chamber at the lower part of the liquid inlet, a floating filter material is arranged inside the floating filter material chamber, the slag hole is communicated with the sedimentation chamber, and the floating filter material filling hole is communicated with the floating filter material chamber; and the fixed filter material filling hole is communicated with the floating filter material chamber by virtue of the fixed filter material chamber, a grid is arranged at a communication part, a fixed filter material is arranged inside the fixed filter material chamber, and the fixed filter material chamber is connected with a liquid outlet. By adopting the degradable filter material biogas slurry filter, flushing and back washing are not needed, the degradable filter material biogas slurry filter can stably operate for a long time while a filter material is supplemented periodically, and quality of filtered clear solution is stable and controllable.

Description

technical field [0001] The invention relates to the field of filter equipment, in particular to a biogas slurry filter with degradable filter material and a filtering method thereof. Background technique [0002] Existing biogas projects pursue gas production efficiency, the fermentation concentration is high, and the output biogas slurry is viscous and has high suspended solids, so it is not suitable for direct application as organic fertilizer. Such biogas slurry can be used as biogas slurry fertilizer for sprinkler irrigation and drip irrigation after filtering suspended solids through biogas slurry filtration equipment. However, the existing biogas slurry filtration equipment has low applicability and cannot achieve long-term stable production. However, a large amount of biogas slurry cannot be used as fertilizer, which will inhibit the operation of the biogas project and cause serious pollution. [0003] Currently commonly used biogas slurry filtration equipment mainly...

AI Technical Summary

Problems solved by technology

The main problem of this patented technology is: when the filter is used for biogas slurry filtration, due to the accumulation of microorganisms in the biogas slurry on the filter material, the backwashing of the filter material must be frequent, and when the backwashing effect is not good, only The filter material can be taken out for cleaning, but the structure of the filter makes it cumbersome to remove and replace the filter material

The main problem of this patented technology is that the filter does not have a slag outlet, and all suspended solids are accumulated on the filter material. Although the filter material is easy to take out for cleaning or replacement, the filter must require frequent manual intervention during the working process. The applicability of the filter is not strong

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