Biological method-based compound compost odor filtering device and method

Abstract

The invention discloses a biological method-based compound compost odor filtering device and method. The biological method-based compound compost odor filtering device is characterized in that odor generated in a vessel composting process is introduced into an odor treatment device with a concrete structure through a water-cooled temperature adjustment device, a draught fan and a one-way valve; a concrete trench allowing gas to be uniformly distributed is formed in the bottom of the device; a concrete cover plate with gas holes is arranged at the upper part of the device; tracks are laid on the cover plate; a drawer-type housing is arranged on the tracks and made of engineering plastic, and gas holes are uniformly distributed in the lower part of the drawer-type housing; the housing is filled with double ball bodies made of engineering plastic uniformly; white-rot fungi are inoculated to the upper half part of an inner ball of the double ball bodies to form a first-stage filtering layer; the odor generated in the composting process enters a second-stage active soil filtering layer after being buffered, adsorbed and partially degraded by the first-stage filtering layer, and finally lawns are planted on the surface of the soil filtering layer. Through the adoption of the two-stage compound compost odor processing device, the problems that pure soil filtering layer particles are likely to block a filtering material, the filtering material on the lower layer is likely to be dry, air flow fluctuates remarkably, and the energy consumption is high are solved.

Description

technical field [0001] The invention relates to the field of composting odor filtering, in particular to a compound type composting odor filtering device and method based on a biological method. Background technique [0002] At present, livestock and poultry breeding is developing in the direction of large-scale and intensification. The amount of manure produced by the prosperity of the farming industry has also increased rapidly, and composting is one of the most effective ways to dispose of the manure produced. Composting methods mainly include strip-stack composting, static stacking composting and fermentation bin composting. In order to facilitate the collection and treatment of the odor generated during the composting process, the fermentation bin composting method has gradually become the development trend of composting in the world. The odor generated during the composting process collected from the top of the fermentation bin enters the odor treatment system throug...

AI Technical Summary

Problems solved by technology

The biological filtration method in the prior art mainly uses active soil filtration, but it also has the following problems: 1) The odor generated by composting contains particulate matter, which is easy to block the active soil filter material after entering the odor treatment system, resulting in poor air flow, The energy consumption of the induced draft fan is increased, and the treatment effect is affected; 2) Due to the complexity of the components in the odor, some harmful odor components that are not easy to degrade cannot be efficiently purified within the specified time, and the treatment performance of only the active soil filtration method Often unstable; 3) The active soil in the lower layer is easy to dry, which is not conducive to the growth and metabolism of degrading bacteria; 4) After the active soil in the lower layer is dry, the fine particles are easy to turn with the air flow, which increases the probability of blocking the upper filter material; 5) Cloth The buffering efficiency of the cobblestone buffer layer used for gas needs to be improved: if it is too thick, it will easily increase energy consumption, and it will be inconvenient to deal with the dust accumulated in the gaps after long-term operation; The filter layer causes a large airflow impact

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