Method for preparing biological liquid fertilizer from fish scales, fish viscera and flushing wastewater

Abstract

The invention discloses a method for preparing a biological liquid fertilizer from fish scales, fish viscera and flushing wastewater. The method comprises the following steps: (1) collecting waste fish scales and fish viscera produced in the process of fish killing and flushing wastewater produced in fish killing for subsequent usage; 2) subjecting the collected fish scales, fish viscera and flushing wastewater to constant-temperature constant-pressure smelting; (3) subjecting an obtained smelting mixture to solid-liquid separation to obtain solid matters and a fermentation stock solution; (4)carrying out constant-temperature fermentation on the fermentation stock solution separated in the step (3), urea, potassium dihydrogen phosphate, zinc sulfate, lemon juice, brown sugar, corn syrup,soybean cake meal, silkworm pupa powder, fermentation bacteria and vinasse water; and (5) subjecting a fermented mixture to solid-liquid separation, wherein filtered liquid is the bio-organic liquid fertilizer. The method of the invention turns the waste into the treasure, converts a large amount of waste pollutants into the bio-organic liquid fertilizer, reduces the pollution of waste to environment, and produces the bio-organic liquid fertilizer with good effect.

Description

technical field [0001] The invention belongs to the technical field of liquid fertilizer preparation, and in particular relates to a method for preparing biological liquid fertilizer by using fish scales, fish viscera and cleaning sewage. Background technique [0002] At present, due to the scraping and washing of fish scales and the discarding of fish viscera in the fish stalls in the market, the environmental pollution at the sales stalls is serious. The deposition of fish scales, the blockage of viscera and the mixing of fish washing water produce a great fishy smell, and The large accumulation of fish scales and viscera is prone to foul smell in hot weather, causing serious air pollution. The current discarded fish scales and viscera are directly discarded, and the flushing water is discharged into the sewer. According to the statistics of fish sales in various large, medium and small towns, the directly discarded fish scales and fish viscera are huge, which will cause s...

AI Technical Summary

Problems solved by technology

[0002] At present, due to the scraping and washing of fish scales and the discarding of fish viscera in the fish stalls in the market, the environmental pollution at the sales stalls is serious. The deposition of fish scales, the blockage of viscera and the mixing of fish washing water produce a great fishy smell, and A large accumulation of fish scales and viscera tends to emit foul odors in hot weather, causing severe air pollution

The current discarded fish scales and viscera are directly discarded, and the flushing water is discharged into the sewer. According to the statistics of fish sales in various large, medium and small towns, the directly discarded fish scales and fish viscera are huge, which will cause serious environmental pollution.

[0003] In addition, the long-term and excessive application of chemical fertilizers and pesticides in our country has led to the destruction of a large area of ​​soil and ecology in our country, thereby reducing the output and quality of agricultural and sideline foods

Therefore, a large amount of organic fertilizers have appeared, but the output demand of organic fertilizers cannot meet the needs of the market, so it is necessary to seek a new green organic fertilizer production method