Chitin cleaning production technique

Abstract

The invention discloses a chitin cleaning production technique and belongs to the technical field of aquatic product processing. In the chitin production process, potassium hydroxide replaces sodium hydroxide, and potassium hydroxide liquid waste is used as seaweed fertilizer production digestive; nitric acid replaces hydrochloric acid, and nitric acid liquid waste replaces some phosphoric acid to serve as seaweed digestive juice neutralizing agent. The chitin cleaning production technique changes traditional thinking, changes waste lye treatment into waste lye use, uses the potassium hydroxide to replace the sodium hydroxide, uses the potassium hydroxide liquid waste as the seaweed digestive in the seaweed fertilizer production process, turns waste into wealth and omits the chitin production waste lye treatment, and meanwhile, in the chitin production technique, the potassium hydroxide liquid waste includes a lot of animal protein and the like organic substance, the nitric acid liquid waste includes abundant calcium and micro-element, the produced seaweed fertilizer nutrition is richer, and the fertilizer efficiency is better.

Description

technical field [0001] The invention belongs to the technical field of aquatic product processing, and in particular relates to a chitin clean production process. Background technique [0002] Chitin is a natural macromolecular biological polysaccharide, which is an important raw material for medicine, food, light industry, chemical industry, environmental protection, etc. Shrimp, crab and other shells are rich in chitin, which is the main raw material for the production of chitin. At present, the production of chitin mainly adopts the traditional acid-base process to produce chitin, which produces a large amount of waste water. Because wastewater contains a large amount of protein, acid, alkali, calcium, etc., its wastewater treatment is difficult and expensive. The domestic conventional treatment method for chitin production wastewater is to concentrate waste acid and waste lye, mix, precipitate, flocculate, etc., and then treat it with anaerobic or aerobic methods. Afte...

AI Technical Summary

Problems solved by technology

[0003] The traditional wastewater treatment technology is only for treatment, and the recyclable and useful components contained in the wastewater are basically consumed in vain, which not only wastes resources, but also has high processing costs and difficulties.

Therefore, for the treatment of chitin wastewater, it is difficult to achieve clean production by using terminal treatment methods. Only through comprehensive utilization can we truly achieve a model of clean production and sustainable development.

In recent years, methods of chitin production wastewater and comprehensive utilization have been reported at home and abroad, such as enzymatic hydrolysis instead of strong alkali to remove protein, strong alkali recycling, etc., but there are shortcomings such as high production costs and large investment in equipment.