Efficient purification system for aquaculture tail water and operation method

Abstract

The invention belongs to the technical field of tail water purification, and relates to an efficient purification system for aquaculture tail water and an operation method. The efficient purificationsystem comprises a tail water tank and a vegetable or aquatic plant culture device; a water adding port and acrusher are arranged at the upper portion of the tail water tank; crushed organic matters are more easily decomposed by microorganisms; water in the tail water tank can flow to a connecting water pipe through a water pump to be used by plants; the vegetable or aquatic plant culture device is a soilless culture device and comprises a spiral planting channel and a bottom tray; substrates for fixing plants can be placed in the spiral planting channel; the water in the tail water tank can flow into the spiral planting channel through the connecting water pipe; and the outflow water of the tail water tank flows through the spiral planting channel from top to bottom under the action of gravity, so as to provide nutrient substances for the plants, and the plants play a role in purifying the tail water in the growth process. The system is suitable for tail water treatment of various scales of aquaculture, is not limited by territory and external environment, is safe, environment-friendly, flexible and efficient, and saves cost and occupied area.

Description

technical field [0001] The invention belongs to the technical field of tail water purification, in particular to an efficient purification system and operation method for aquaculture tail water, which are used for treating different scales of aquaculture tail water and using the tail water to cultivate vegetables or other aquatic plants. Background technique [0002] Aquaculture wastewater is mainly low-concentration organic sewage, and the main pollutants are ammonia nitrogen, nitrite, organic pollutants, phosphorus and fouling organisms. At present, the artificial wetland treatment method is mainly used in the biological treatment of aquaculture tail water. By constructing an artificial ecosystem, a variety of plants, fish, shrimp, microorganisms and other species are introduced into the system, and the system operates in a circulating flow mode to remove ammonia nitrogen in the water body. The concentration of pollutants, this method is suitable for high-density farming o...

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Problems solved by technology

Chinese patent CN103999812B discloses a fish and vegetable symbiosis integration system, including aquaculture system, planting system and integrated automatic control system, which combines aquaculture and vegetable production through ecological design, and decomposes organic matter in the excrement of aquaculture tanks through physics and microorganisms Provide nutrients for plants, and the planting system can purify water for aquaculture. However, this technical solution is suitable for large-scale aquaculture bases. It has high requirements for land area and climate. The control design of the whole system is complicated, and aquatic products, microorganisms and plants are closely related. , activities such as aquatic fishing and vegetable picking will affect the stable operation of the system, and pollutants such as bait, dead fish, and fish scales in the tail water of aquaculture cannot be decomposed by microorganisms in a short period of time, which will easily cause the dissolved oxygen in the water body to decrease and stink

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