Novel digested-effluent organic liquid fertilizer and preparation method therefor

Abstract

The invention discloses a novel digested-effluent organic liquid fertilizer and a preparation method therefor, relates to a fertilizer prepared from wastes or garbage and particularly relates to the low-concentration and high-efficiency organic liquid fertilizer prepared from digested effluent. The object of the invention is to provide the low-concentration, high-activity and good-fertilizer-effect organic liquid fertilizer, which is prepared through adding a composite bacterium agent and a physical light-conversion material into the biogas liquid, and the preparation method therefor. The novel digested-effluent organic liquid fertilizer disclosed by the invention contains the ingredients in parts by mass: 1,000 parts of digested effluent, 10-20 parts of three-acid mixture, 2.5-3.5 parts of the composite bacterium agent and 2.5-3.5 parts of the physical light-conversion material. According to the novel digested-effluent organic liquid fertilizer disclosed by the invention, a variety of physiologically-active nutrients are provided for plant growth, the site condition of soil is greatly improved, and meanwhile, the problem of secondary pollution resulting from the digested effluent is solved. The novel digested-effluent organic liquid fertilizer and the preparation method therefor are applied to the field of agricultural planting.

Description

technical field [0001] The invention relates to a fertilizer made from waste or rubbish, in particular to a low-concentration, high-efficiency organic liquid fertilizer made from biogas slurry. Background technique [0002] The state has organized relevant departments to carry out national soil pollution surveys for six years. The Ministry of Environmental Protection and the Ministry of Land and Resources issued a national survey bulletin on soil pollution, and the results showed that: "The quality of the national soil environment is worrying, and the soil environment problem in industrial and mining wasteland is prominent. The number of non-polar pollutants exceeding the standard accounts for 82.8% of all exceeding points." . The reasons for this phenomenon are as follows: [0003] First, our one-sided pursuit of increasing food production has seriously damaged the soil environment. Predatory cultivation overwhelms the soil. In the 1950s, when the Northeast was developi...

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Problems solved by technology

[0008] The technical reasons why biogas slurry containing aquaculture wastewater cannot be used: 1. Direct application, because biogas slurry (including aquaculture wastewater) is the remaining product after anaerobic fermentation of biogas, and there are many reducing substances in it, although it can provide a part of it after being applied to the soil Nutrients, but at the same time reducing substances cause damage to the root system and the plant root system competes for oxygen, resulting in black roots and rotten roots, so that large areas of crops die, and at the same time cause many problems such as soil compaction and salinization

2. Deep processing of biogas slurry containing aquaculture wastewater, because the dry matter content is too low and the moisture content is ≥ 90%, and the concentration cost is high; 3. Directly add common inorganic substances such as urea, diammonium phosphate, and potassium sulfate to the biogas slurry containing aquaculture wastewater Adding a small amount of fertilizer has little effect, and the high cost of planting is unacceptable. It is better to use chemical fertilizers directly

There is no good treatment method and technology at present, resulting in the accumulated biogas slurry stock of large-scale biogas projects as large as a reservoir, which needs to be solved urgently!

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