Device definition and purpose
An aerator is a mechanical installation that saturates the water of a decorative outdoor pool with oxygen. Molluscs, fish, snails and other organisms living in the reservoir require a specific concentration of oxygen to maintain their vital activity. Its lack negatively affects the condition of all living things. In nature, water exchange occurs continuously. All rivers, oceans, groundwaters are connected, and the atmosphere and precipitation are also involved in the movement. However, private open water bodies are not included in the total turnover. Their bottom is usually lined with insulating material, so a small pool surface is not able to provide oxygen to the entire water column. As a result, the pond becomes lifeless, and then becomes covered with malicious algae and rot.
The aerator will help make beautiful decorative ponds filled with life out of stagnant, muddy reservoirs. In addition, the aeration process helps purify the water. Mud, having begun to interact with oxygen, collects in sediment or accumulates near the coast in the form of foam.
Structure and types
Aerators (air compressors) are mechanical compression-type units. Their main purpose is to enrich water with oxygen, create artificial flows for mixing water layers. In winter, the pond aerator forms a gully. Through it, harmful gases come out to the surface, air enters. A typical system includes:
There may be some nuances in the structure - it depends on the principle of operation and the type (there are three in total) of the installation.
Types and choices
Any pond, decorative or economic, needs aeration. Of course, an industrial installation will require investment, and a self-made installation will require time. But the problems that arise in a stagnant body of water are incomparable with spending. There are devices of various types on sale.
- Surface. These devices lift and discharge water in the form of a cascade or a fountain jet. It looks nice in small decorative pools. The work is based on the fact that the pump takes in a certain amount of water and throws it out with acceleration. The jets, being at the top, are saturated with oxygen, then, falling, they make up for its lack in the reservoir.
- Ejector. The units are equipped with blades that drive the built-in motor. They hit the water, it mixes, air bubbles form.
- Combined. Such an aerator is placed on the shore, while the spray is in the water, and the head is on top. From it, a water jet gushes like a fountain, which, when it falls, enriches the water with oxygen.
- Wind. This is a stand-alone compressor, while the operation does not require a source of electricity, the wind power is enough. The apparatus consists of an underwater propeller and wings above the water. The wind rotates the wings, and they transmit momentum to the propellers, which begin to mix the water.
- Bottom. A relatively new but highly efficient type of pond aerators. The device itself is installed on the edge or far from the pool, and only the diffuser and tubes are lowered into the water. A certain amount of water passes through small holes, as if "flashing" its main thickness. So the water layers are constantly mixed, and the pond is saturated with oxygen. Conveniently, the noise of the installation will not disturb the inhabitants of the reservoir and the owners if the pool is located close to the house. The aerator can be placed on the other side or hidden in a building.
The choice of compressor depends on the size, depth and population of the pool. So, for a small summer summer cottage pond with water lilies, the simplest surface device is suitable, and if the reservoir is intended for economic fish farming, a bottom one.
Surface, combination and ejector compresses create a constant noise that can disturb the inhabitants of the pond. This must be taken into account when choosing a device.
Varieties of aerators
- Surface - used very often in decorative ponds, as they often imitate fountains and waterfalls. The pump draws in water from the pool and forcibly throws it into the air. The water is oxygenated and immediately returned to the pool. It is not recommended to put such a device in a pond with fish, as the installation creates quite a lot of noise.
- Ejector - a wheel with blades acts as a working element of the device. Rotating, the blades lift water into the air, it is saturated with oxygen and returns to the reservoir. The device effectively mixes the lower and upper layers of water, has a high power, but makes no less noise.
- Bottom - the compressor is located on the shore, and a supply pipe with a diffuser is lowered to the bottom of the pond. The air flows directly into the water column and is evenly distributed. The most effective option for a fish pond, as it does not harm the inhabitants and does not frighten them with noise.
- Combined - the compressor of the device is installed on the shore, the pipe with the spray is placed on the surface. This creates a fountain effect and oxygenation is faster.