Cassava biogas residue sprout cultivation substrate and production technology thereof

Abstract

The invention relates to a cassava biogas residue sprout cultivation substrate and production technology thereof, wherein the sprout cultivation substrate is prepared after the cassava biogas residue is subjected to residual ethane removal and acid regulation; the production technology comprises the following steps: a. dehydrating: dehydrating the cassava biogas residue by a filter press to obtain biogas residue with water content of 50-60 percent; b. detoxifying: spraying a soil cleaner containing ferric trichloride into the biogas residue, and removing residual methane in the biogas residue; c. stirring: stirring the biogas residue is uniformly ; d. sealing and acid regulating: sealing the biogas residue which is uniformly stirred for 1-2 days, and during the period, and spraying the soil cleaner containing ferric trichlorid to conduct acid regulation, thus regulating the biogas residue approaching to alkalinity to approach to acidity; and e. spreading: spreading the biogas residue approaching to acidity after sealing, and leading water content to be less than or equal to 50 percent, thus obtaining the product packing. The cassava biogas residue sprout cultivation substrate and the production technology of the cassava biogas residue sprout cultivation substrate solve the problem of waste recovery of cassava biogas residue, and change waste into wealth; and the production technology of the cassava biogas residue sprout cultivation substrate causes the cassava biogas residue to meet the requirement of sprout cultivation substrate.

Description

technical field [0001] The invention relates to the technical field of cassava biogas residue reuse and the technical field of soilless seedling cultivation, in particular to a cassava biogas residue seedling raising substrate and a production process thereof. Background technique [0002] Rice is one of the main food crops in our country. Rice machine transplanting is not only a high-yield cultivation technique for rice, but also a reliable way to liberate rural labor. Rice transplanting by machine requires the seedlings to be strong and the roots not to stick together. To promote machine transplanting, it is necessary to replace soil seedlings with seedling substrates; the current agricultural machinery and equipment for machine transplanting have matured, but seedling substrates have become a "bottleneck" problem. If the problem of seedling substrates can be solved, the promotion of machine transplanting will be guaranteed. [0003] At present, seedling raising substrate...

AI Technical Summary

Problems solved by technology

There are more than 20 cassava alcohol factories in my country, and the annual output of distiller's grains is about 20 million tons. The distiller's grains can be further used for biogas generation to obtain usable biogas. The final product biogas residue has no practical value, and now most of the biogas The slag is used to fill pits and ponds, and stacking there will also cause secondary pollution, which also limits the development of cassava industrialization, and economic value and environmental protection cannot be achieved at the same time.

[0005] After in-depth research on the biogas residue obtained from cassava rhizomes after fermentation and biogas generation, it has been successfully used as a raw material for seedling raising substrates and has broad prospects. However, the biogas residue contains residual methane, which will chemically react with oxygen in water. Reaction CH 4 +2O 2 =2H 2 O+CO 2 , In the rooting stage before the seedlings germinate, a lot of oxygen is needed. If it is directly used as a seedling substrate, methane will compete with the seedlings for oxygen and release carbon dioxide, resulting in hypoxia of the seedlings. The root tips of the seedlings will change from white to yellow, from yellow to black , and eventually the seedlings suffocate to death, the so-called seedling poisoning phenomenon