A kind of vermiculite oxygen shoveling agent and its rapid composting fermentation method for treating sludge

Abstract

A vermiculite oxygen scavenger and a rapid composting fermentation method for treating sludge by using the same. The sludge composting fermentation oxygen scavenger is a mixture of plant particles and vermiculite, and its weight ratio is 1:1-1.3. Its advantages are: increase the permeability and looseness of the compost; make the compost fermentation process uniform; after composting, the obtained clinker is loose, the vermiculite and the material are easy to separate, and the dominant microorganisms attached to the micropores on the surface can be separated with time. They are used together as recycled materials; due to the low loss of vermiculite particles during use, they can be recycled and reused, and the loss rate of each compost is less than 5%; the operating cost is low, and the crushing process of sawdust or straw is reduced, greatly reducing Labor intensity and obvious economic benefits; the early heating speed of composting is fast, and the dehydration and cooling of the compost body are more rapid at the end of composting; the time required for composting to decompose can be shortened by 5-7 days, which is about 1 / 2 shorter than the composting cycle of similar industrial composting technologies at home and abroad 3. It improves the composting efficiency and is more suitable for the automatic control of the composting process.

Description

technical field [0001] The invention relates to the technical field of sludge aerobic composting treatment methods, in particular to a vermiculite oxygen scavenger and a rapid composting fermentation method for treating sludge with the same. Background technique [0002] With the acceleration of urbanization in my country, the amount of urban sewage treatment is also increasing. Sludge is an accompanying organism of sewage treatment, usually accounting for 0.5--1% of the sewage treatment volume. Due to its complex composition, it contains not only a large amount of organic matter, but also contains pathogenic microorganisms, heavy metals, etc. Form "secondary pollution". Therefore, how to safely, economically and rationally dispose and utilize sludge from sewage treatment plants has always been a research topic of great concern to countries all over the world. At present, the disposal methods of municipal sludge include incineration, sanitary landfill and land utilization...

AI Technical Summary

Problems solved by technology

However, in the process of composting, due to self-decomposition and collapse, it cannot play the role of support and oxygen removal from beginning to end.

Therefore, only the conditioner composed of wood chips, straw powder, rice husk, etc. can only play a short-term role, and gradually lose its conditioning function in the middle and late stages of composting; thus affecting the treatment effect of sludge composting, prolonging the composting time, and increasing the amount of sludge Treatment costs, which in turn affect the recycling of sludge resources