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There are several types of aerators. How to use them correctly?

After reasonable use, the aerator has the following functions in production: making full use of water resources; Prevent floating head; Rescue floating head to prevent flooding; Can accelerate the material circulation in the pond; Stabilize water quality; It can increase the stocking density of fish species, increase the amount of feeding and fertilization, and thus increase the yield; Is beneficial to the prevention and treatment of fish diseases. According to the experiment, under the same conditions, the net output with aeration tank is increased by about 65438 04% compared with the control tank without aeration tank.

I. Main types of aerators

There are many kinds of aerators, their characteristics and working principles are also different, and the oxygen-increasing effect is quite different, and the application scope is also different. Impeller aerator, waterwheel aerator, jet aerator, propeller aerator, water jet aerator, microporous aerator, suction aerator, vortex aerator, aerator pump, mobile solar aerator.

Solar mobile aerator is mainly composed of power device, aerator, guide rod and water walking device. The solar mobile aerator is powered by solar energy and moves on the water. It has not only the function of mechanical aeration, but also the function of water layer exchange. At the same time, it solves the problem of limited aeration range of fixed aerator, greatly improves aeration efficiency and has obvious energy-saving aeration effect.

The invention can effectively improve the dissolved oxygen environment at the bottom of the pond, disturb the water body and bottom material, promote the material circulation of the pond and activate the water body. Mobile solar aerators can also be used in aquaculture areas, such as beaches lacking power facilities.

Second, the selection and installation of aerator

Choose aerators according to the characteristics of various aerators and breeding objects. Generally speaking, microporous tube aerator or waterwheel aerator can be used for Penaeus vannamei culture pond, impeller aerator can be used for conventional domestic fish culture, and jet aerator can be used for fry culture.

Determine the number of aerators according to the pond area, generally? 3 ~ 5 mu of water surface is equipped with an aerator, and the number of aerators should be calculated for larger ponds. Determine the placement position of the aerator, which is installed in the center or windward of the pond, generally about 5 meters away from the shore of the pond. When installing aerators in shrimp and crab ponds, avoid the position of aquatic plants. An impeller aerator should be installed to ensure that the water flow generated during the operation of the aerator will not stir the sludge at the bottom of the pool.

The safe operation of the aerator should be assembled and fixed in the pond according to the instruction manual. If the aerator works in bad conditions, users should be equipped with thermal relays, open-phase protectors and other protection devices. When the aerator is started, the operation must be closely observed. If there is abnormal sound or unstable operation, stop the machine immediately and start it again after eliminating the abnormal phenomenon.

Third, how to use the aerator reasonably

The aerator must be operated under safe conditions, and the operation time should be determined in combination with the stocking density of fish in the pond, the growing season, the water quality conditions of the pond, the weather change, the load of the aerator and other factors, so as to be effective and not wasteful. Its use should follow the following principles:

Turn on the aerator at noon in continuous sunny days. In high temperature season, in case of continuous sunny days, turn on the aerator at noon. Continuous sunny days, phytoplankton photosynthesis is vigorous, at this time, the dissolved oxygen content in water is high, and there will be no phenomenon that hypoxia affects the growth of fish. The purpose of starting the aerator is to adjust the overall dissolved oxygen in the pond and improve the dissolved oxygen content in the middle and lower water bodies.

Start the aerator at noon on a sunny day, and use the aerator to stir the water body. The aeration effect is not obvious. By stirring the water body to promote the mixing of the upper and lower water bodies, the water body with high oxygen content in the middle and upper layer due to phytoplankton photosynthesis can be brought into the middle and lower layer, which can accelerate the decomposition of organic matter, avoid the accumulation of a large number of dissolved organic matter generated by its decomposition under anaerobic conditions, eliminate potential oxygen consumption factors, and effectively avoid the harm caused by the rapid decline of dissolved oxygen in the whole pool when the weather changes suddenly.