Method for processing and recycling aquaculture water in intensive culture pond

Abstract

The invention discloses a method for processing and recycling aquaculture water in an intensive culture pond, which comprises the following steps: (1) performing oxygenation measures, and then gathering pollutants in a central sewage draining exit; (2) arranging a discharge pipe at the central sewage draining exit, wherein the discharge pipe is communicated with a gate of a drainage sluice; (3) pumping sewage in the pond from a pump pipeline by using pumping equipment; (4) separating the sewage by a foam separator; and (5) dealing with pathogens in the obtained clean water by an ozone generator and then discharging the clean water to the pond for recycling, collecting the obtained sewage and then carrying out biochemical treatment on the sewage, after the sewage is up to the standard, discharging the sewage. In the intensive culture pond implementing the technology of the invention, the aquaculture water consumption can be reduced by 70 to 80 percent, the sewage discharge is reduced, the environmental pollution is alleviated, and the aquaculture output is raised; and meanwhile, the method of the invention is beneficial for cutting off the horizontal transmission route of the pathogens, and can be used for processing and recycling the water in the intensive culture ponds for culturing the economic aquatic species such as fishes, prawns, macrobrachium rosenbergii and crabs, and the like in the process of cultivation, therefore, the method is helpful for the healthy and sustainable development of the aquaculture industry, and has high use value.

Description

technical field [0001] The invention belongs to the field of aquaculture, and relates to a water treatment and recycling method for intensive aquaculture pond cultivation. technical background [0002] my country is the largest country in the world's aquaculture industry. In 2002, the output of aquatic products reached 45.618 million tons, accounting for about 40% of the global output, of which the output of sea and freshwater aquaculture was 29.07 million tons, accounting for 64% of the total output, accounting for nearly 60% of the global aquaculture output . Shrimp aquaculture is the pillar industry of marine aquaculture in my country. In 1992, the aquaculture area exceeded 140,000 hectares, and the output was 220,000 tons, with an average output of 1.57 tons per hectare. Since 1993, the output of shrimp farming began to decline. In 1995, my country had only 50,000 tons, with an average yield of 0.36 tons / ha. From 1993 to 1995, the annual direct economic loss of the shri...

AI Technical Summary

Problems solved by technology

Therefore, a comprehensive analysis shows that not only the consumption of water resources in the process of shrimp farming is huge, but also the amount of waste water and waste discharged to the environment is astonishing, which affects the healthy and sustainable development of the shrimp farming industry

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