Method for producing particle organic fertilizer by using activated sludge

Abstract

The invention discloses a method for producing particle organic fertilizer by using activated sludge and belongs to the technical field of fertilizer production. According to the method, sewer sludge and sludge at the bottom of a pond are used completely to perform aeration and then wheat bran and straws are added to perform habituated culture and are mixed completely to ferment the organic fertilizer. The method has the advantages that the nitrogen content of the organic fertilizer is from 20% to 28%, the phosphorus content is from 18% to 22%, the yield of each mu is increased by 20 to 30 kg after the organic fertilizer is used, and the fertilizer efficiency is good. The method can improve soil structures, provide nutritional ingredients needed by the crops and promote the growth of the crops effectively. The sewer sludge and the sludge at the bottom of the pond are utilized completely, the wheat bran and straws are added to perform habituated culture and are mixed completely to ferment the organic fertilizer, the waste is turned into treasure, the recycling economic development of resources is achieved, the problem of the pollution of the sludge to the environment is solved, the occupation of the land source is reduced, and the living environment quality of surrounding residents is improved.

Description

technical field [0001] The invention relates to a method for producing granular organic fertilizer from activated sludge, belonging to the technical field of fertilizer preparation. Background technique [0002] With the development of urbanization in my country and the popularization of aquatic animal breeding industry, domestic sewage and aquaculture wastewater have increased greatly, and the resulting surplus sludge production will continue to increase; sludge contains a large amount of organic matter, and if it is not properly treated, it will be destroyed. It causes different degrees of pollution to the ecological environment. The current sludge treatment methods are accumulation incineration and landfill, but accumulation incineration will cause secondary pollution to the environment, landfill will occupy a large amount of land resources, and the investment cost is high and the treatment effect is poor. [0003] Sludge contains a large amount of nutrients such as nitrog...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the sludge contains a large amount of nutrients such as nitrogen, phosphorus, and potassium that promote the growth of plants and crops. If it is piled up and incinerated, it will not only cause high investment costs, but also cause secondary pollution to the environment and occupy a large amount of land. resources, and also cause the disadvantage of waste of resources, and provide a method for producing granular organic fertilizer from activated sludge. The problem of mud pollution to the environment reduces the occupation of land and the effect of fertilizer is good