Automatic composting device for city domestic sludge and processing method for city domestic sludge

Abstract

The invention relates to an automatic composting device for city domestic sludge and a processing method for the city domestic sludge. The automatic composting device for city domestic sludge comprises a clinker bin, a sludge spiral feeding bin, a granulating machine, a discharging machine and a fermentation bin, wherein a dusting mechanism is arranged at the outlet of the granulating machine; a primary fermentation part, a secondary fermentation part and a finished product part are arranged inside the fermentation bin; layers of fixing supports are respectively arranged in the three parts of the fermentation bin in a laminated manner, and a plurality of composting cylinders are inserted into the fixing supports; a lifter used for lifting the fixing supports is arranged on a side wall of the fermentation bin. According to the automatic composting device for city domestic sludge and the processing method for the city domestic sludge, a city domestic sludge processing scheme with a high added value is provided, sludge grains with clinker inner cores are used, so that the advantages of high composting efficiency and sustainable automatic production are achieved, flower cultivating soil is formed through composting, good water permeability, low probability of conglomeration and low soil aeration frequency are achieved, moreover, the sludge composting economic benefit is improved.

Description

technical field [0001] The invention relates to the technical field of sludge composting, in particular to an automatic composting device for municipal domestic sludge and a processing method thereof. Background technique [0002] Due to the continuous expansion of the urban population, more and more garbage is produced in the city, and the discharge of urban sewage is also increasing. According to statistics, in 2006, my country's annual sewage discharge has reached 29.7 billion tons, and the annual sludge production has reached 17.82 million tons, and these figures are still increasing in recent years. Although urban sludge is rich in organic matter such as nitrogen, phosphorus, and potassium, it is a good source of organic fertilizer, but it also contains a large number of pathogenic bacteria and eggs of diseased insects. If it is not treated in time, the pathogenic bacteria will multiply in large numbers. On the one hand, it will produce a large amount of malodorous gas....

AI Technical Summary

Problems solved by technology

[0004] Finally, it is a common disposal method to use municipal domestic sludge as composting soil for planting flowers. However, if the planting soil for flowers is placed in the planting pot for too long, the planting soil often agglomerates, the soil is agglomerated, the air permeability is poor, and the soil retains Poor water function and other shortcomings require frequent loosening of the soil, but the planting space of potted plants is small, and it is not easy to turn over the soil. It is a problem worthy of research

Images