Processing technology for purifying pollutants in hard-shelled seawater shellfish

Abstract

The invention discloses a processing technology for purifying pollutants in four hard-shelled seawater shellfishes like Ruditapes philippinarum, Meretrix meretrix, Cyclina sinensis and Tegillarca granosa through an ultraviolet seawater treatment technology. The technology provided by the invention comprises a semi-closed circulation system, and is performed in a temperature-adjustable indoor environment. The technology is implemented through the following six steps: subjecting shellfish to picking, performing cleaning and basketing, then placing the basketed shellfish in a purifying pond, pumping deep-well seawater of which water quality meets the requirements into a circulation water pond, then transporting the seawater into an ultraviolet sterilizer through a water pump and carrying out sterilization, ejecting the sterilized seawater into the purifying pond according to process parameters to purify the shellfish, then discharging return water into the circulation water pond again, and carrying out repeated circulation until the shellfish product hygienic quality standard or purification with a minimum time of 24 hours is achieved so as to complete a batch of a purification processing process. The processing technology provided by the invention has the advantages of significant pollutant removal effects, strong vitality of purified shellfish, simple process, low investment, etc.

Description

Technical field [0001] The invention relates to a process for purifying marine products, more specifically, the present invention relates to a process for purifying pollutants from hard-shell seawater shellfish. Background technique [0002] my country is the country with the largest shellfish aquaculture production in the world. According to statistics, in 2010, the production of marine shellfish aquaculture reached more than 12 million tons, accounting for 75% of my country's total marine aquaculture and 23% of the national fishery output. It has developed into Industries that have an important impact on the national economy. However, due to the biological characteristics of shellfish, harmful pollutants in the seawater environment are easily transmitted to humans through the food chain. At present, the government still lacks an effective technical supervision and assurance system for the safety of seawater shellfish production and hygiene. The consumption of shellfish is likel...

AI Technical Summary

Problems solved by technology

Ozone technology adopts ozone sterilization. Although it can maintain a relatively thorough killing effect on pathogenic microorganisms in the shellfish body, it has a strong biological stimulation effect on the shellfish body, resulting in a significant decline in the biological activity of the purification product. It is difficult to control the effective concentration and uniformity of ozone in water, and the detection cost is high. Unlike fresh water, ozone will chemically react with some ions in seawater to form bromate and other toxic and harmful residual substances

Chloride technology uses chlorine or chlorine compounds as a disinfectant. Compared with ozone technology, it has less toxic and side effects on humans or shellfish, but it is also difficult to operate and costs more

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