Municipal sludge fermentation aid

Abstract

The invention provides a municipal sludge fermentation aid and a use method thereof. The municipal sludge fermentation aid comprises 10-30 parts of coal ash, 20-50 parts of a chitosan derivative, 5-30parts of aluminum sulfate, 10-30 parts of a bio-enzyme, 5-30 parts of ferric trichloride, 20-50 parts of a zymophyte yeast, wherein the parts are 100 parts in all. The fermentation aid provided by the invention can be compounded with a biological flocculant zymophyte yeast, and in addition, is capable of dehydrating sludge before fermentation, and thus the situation that growth and propagation ofaerobic bacteria are affected because of too much moisture in the sludge can be avoided; due to adoption of inorganic and organic flocculants, a framework can be established inside the sludge to maintain fluid channels, the interference tension of solids and liquids can be reduced, moisture in sludge floc grids can be released, and deep removal of the moisture in the sludge can be facilitated; meanwhile, due to interactions of organic matters and zymophyte, the reaction process of compositing can be accelerated, and the compositing reaction time can be shortened; and the municipal sludge fermentation aid has the advantages that dehydration is rapid, the composting reaction process is accelerated, the composting reaction time is shortened, the requirements of users can be well met, and thelike.

Description

technical field [0001] The invention relates to the field of environmental protection engineering, in particular to a municipal sludge fermentation aid. Background technique [0002] Municipal sludge is solid, semi-solid and liquid waste produced by urban purification and treatment of sewage, and its quantity is growing rapidly. It mainly comes from primary sedimentation tank sludge and residual activated sludge. With the development of domestic municipal sewage treatment business, the total treatment capacity and treatment degree of sewage plants will continue to expand and improve, and the amount of municipal sludge produced will also increase day by day. Sludge from urban sewage treatment plants includes solid particles such as sediment, fibers, animal and plant residues in wastewater and their coagulated flocs, bacterial micelles formed by various microorganisms and their adsorbed organic matter, heavy metal elements and salts Species, a small amount of pathogenic micro...

AI Technical Summary

Problems solved by technology

However, due to the lack of emphasis on the control of physical and chemical indicators such as pathogenic bacteria, heavy metals and harmful organic substances contained in sludge and sensory indicators such as odor in sludge management, and the odor pollution generated during the treatment process and the output after treatment Problems such as excessive alkalinity greatly limit the resource utilization of sludge

[0005] In the current fermentation process, the number of effective viable bacteria is low, the survival of beneficial microorganisms is low, and the content of organic matter is low and the content of heavy metals is high, resulting in poor quality. The general solution is to condition the sludge first to reduce sludge The moisture and harmful substances in the mud are then fermented, which makes the whole fermentation process more complicated

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