Til að fá meiri hagnað af lífrænum áburði, Besta leiðin er að bæta næringarefni hreinleika. Það eru tvær tillögur:
Gróft hráefni–screening
Hráefni lífræns áburðar eru alltaf einhver dýraáburður, iðnaðarúrgang, seyru og svo framvegis. Það eru mörg gagnslaus efni, which are not suitable to be fertilizer, but also harmful. To pick them out, you can choose skimunarvél. This equipment can screen out the redundant matters from the raw materials. After screening, the quality of fertilizer can be partly improved.
Fine finishing–rotmassa
This is the deep processing of screened materials, and it’s mainly suitable for composting animals waste. With the help of composting equipment, manures can get fine fermenting. Because of the high temperature when composting, the plant weeds, pest eggs and other harmful materials can be greatly destroyed. Fyrir vikið, the fertilizer products have better quality and competitiveness.