Resourceful treatment method for excrement of livestock

Abstract

The invention discloses a resourceful treatment method for excrement of livestock. The method specifically comprises the following steps: constructing a fermentation bed in a place which is exposed to the sun and is ventilative; carrying out solid-liquid separation on the excrement of livestock by using a solid-liquid separator; fermenting the uniformly stirred solid excrement of livestock, auxiliary materials and zymophyte powder after solid-liquid separation to obtain an organic fertilizer; and putting the liquid excrement of livestock after solid-liquid separation in a USR reactor for fermentation to obtain biogas for power generation or combustion, wherein biogas residues and biogas slurry enter into peripheral orchards and food crop fields. The method disclosed by the invention has the characteristics of being simple and convenient to operate and low in cost. The produced organic fertilizer is high in harmless degree and good in fermentation effect. Excrement in a farm can be converted into excellent feed resources and fertilizer resources, so that the urban and rural ecological environments are protected and the economical benefit is improved. The livestock pasture not only realizes zero drainage of sewage and does not pollute peripheral water, but also saves water; the ecological environment is protected, the input of chemical fertilizer is reduced, and the farmers' income is increased.

Description

technical field [0001] The invention relates to a method for treating manure, in particular to a method for resourceful treatment of livestock and poultry manure. Background technique [0002] With the adjustment of the agricultural industrial structure and the change of the residents' dietary structure, the breeding industry in various parts of my country has developed rapidly, resulting in a large amount of livestock and poultry manure, which not only pollutes the environment, but also causes problems such as livestock and poultry growth and human health. Affect the sustainable development of aquaculture. The current livestock and poultry manure treatment technologies mainly include drying method, chemical method and other methods, but these methods cannot completely kill some stubborn harmful bacteria, diseases and insect pests and weed seeds, which are likely to cause secondary pollution and consume energy Large, a lot of odor is emitted during processing, and the proces...

AI Technical Summary

Problems solved by technology

The current livestock and poultry manure treatment technologies mainly include drying method, chemical method and other methods, but these methods cannot completely kill some stubborn harmful bacteria, diseases and insect pests and weed seeds, which are likely to cause secondary pollution and consume energy Large, large amount of odor is emitted during processing, and the processing time is long and the fertilizer loss is also serious.

[0003] At present, the government has invested huge sums of money in key treatment, construction of pollution control facilities, and the development of standard discharge processes for livestock and poultry pastures. The industrial pollution control process of oxygen consumption and aeration is generally used in the built pollution control facilities. Due to the high operating costs of the equipment, the project is completed Afterwards, many farms could not afford it. The treatment system built by some units had not been operated for a long time, the equipment was rusty, and a large amount of pollution control investment failed to achieve the desired effect.

In the prior art, in addition to fermenting solid manure as fertilizer and returning it to the field, or puffing poultry manure as feed for fish, a large amount of manure has not been developed and utilized as a resource, so that livestock and poultry manure has long been a source of water pollution