Micro-nano carbon fertilizer prepared from domestic garbage and preparation method thereof

Abstract

The invention discloses micro-nano carbon fertilizer prepared from domestic garbage and a preparation thereof. The fertilizer is characterized by comprising inorganic sulfate (ammonium sulfate, magnesium sulfate and others), and being capable of purifying soil pollution caused by heavy metal including cadmium and others. The electrical conductivity of soil can be improved through a micro-nano carbon material, plants can absorb cadmium and other heavy metal elements from the soil, and therefore soil cadmium pollution can be eliminated. In the preparation process of the micro-nano carbon material prepared from the garbage, the city domestic garbage is burned under an anaerobic condition at low temperature of 650 DEG C to be pyrolyzed, hydrogen (H2) and carbon monoxide (CO) combustible gas are generated, the garbage is thoroughly carbonized, and the amount of formed carbon can reach up to 12-15%. Poisonous gas dioxin, greenhouse gas CO2 and others are not generated. An urease inhibitor and an ammonium stabilizer are added into the fertilizer. The invention first discloses catechol (catechol) as the urease inhibitor screened by China at home and abroad. The emission load of greenhouse gas can be reduced. The effective period of the fertilizer can reach 1-2 years, and the fertilizer is suitable for being applied to field crops and perennial pasture.

Description

technical field [0001] In today's world, with the rapid development of the economy and the rapid expansion of cities, the average annual growth rate of domestic garbage in the besieged city is 8.42%, while the average annual growth rate of garbage in my country is more than 10%, and the annual output of garbage is as high as 150 million tons. At present, the cumulative stock of garbage in my country is as high as 7 billion tons, which has caused a serious situation of garbage siege. The growth rate of garbage in our country is increasing at a rate 2 to 3 times higher than that of the national economy, and it has begun to become the first factor hindering urban development. Among the 700 cities in my country, 2 / 3 of them are surrounded by garbage. Therefore, the harmless and resourceful treatment technology of domestic waste will have a fundamental impact on the development of the country's cities. According to my country's "Twelfth Five-Year Plan" circular economy developmen...

AI Technical Summary

Problems solved by technology

In recent years, with the rapid development of China's agriculture, continuous cropping has caused soil compaction and soil-borne diseases to aggravate; perennial high output and high input have caused imbalances in the proportion of various nutrients in the soil; unreasonable application of chemical fertilizers and improper irrigation methods have caused soil acidification , soil salinization, etc., pose a threat to the sustainable development of China's agriculture