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Three Methods Of Fish Pond Filtration

Update time : 2021-12-02 14:34:10

The main filtration methods of koi fish ponds and landscape water systems mainly include the following methods:

Ⅰ. Filtration method of fish pond filter

1. The working principle of the fish pond filter tank: the filter pond filters the water in the fish pond from the bottom pipe into the filter tank, and then flows through the filter material layer in the filter silo to trap the fine suspended solids and colloidal substances in the dirty water on the surface and inside of the filter material. In the gaps between the layers, the dirty water is purified layer by layer, and the filtered water is returned to the fish pond. Generally speaking, the circulating water pump is used to realize the continuous circulation from the main tank to the filter tank, and the fish feces and impurities in the fish tank are precipitated into the filter tank, and then the sewage pump is used to forcibly discharge these dirty things into the sewer.

The simplest filtration method for fish ponds is divided into physical filtration and biological filtration: as the name suggests, physical filtration is to physically filter out impurities, leaves, fish feces, and water garbage in the water body. Biological filtration is mainly to cultivate beneficial bacteria and convert ammonia and nitrite, which are colorless and harmful substances dissolved in water, into less toxic nitrate.

The characteristics of the filter system of the filter tank: the physical and biological effects are strong, and the water quality treatment ability is relatively thorough; the filter material can absorb and intercept most of the pollutants, and the water quality is kept clear for a long time. The filter effect is stable if these conditions are met: A, the area of the filter tank is required; B, the pipe arrangement is scientific and reasonable; C, the filter material is of good quality; D, the professional construction team; the operation and management are simple, and the filter tank can be taken care of once a year.

Ⅱ. Fish pond filter filtration method:

The fish pond filter box is an artificially integrated filter, which mainly combines physical filtration and biological filtration in a filter tank. The filter tank is divided into several layers, and the upper layer of the filter tank is the physical filter layer, The main filter materials are filter cotton, biochemical cotton, and filter brush; and the following layers will be equipped with various filter materials such as biochemical balls, rattan cotton, glass rings, quartz balls, and bacteria houses.

1. The working principle of the fish pond filter box is: the water is pumped from the fish pond to the top of the dropbox by a water pump. When the topwater is full, the water will overflow, and the water flows slowly and naturally into the first drip trough; it passes through the drip plate evenly Distributed everywhere; the water flows or drips or flows through the filter material, and then flows to the second layer of drip trough. The clean water reaches the third layer at the bottom of the trickle filter box and flows directly into the fish pond through the water outlet. When the water flows through, it will increase the contact surface with the air, thereby increasing the amount of dissolved oxygen in the water and providing aerobic bacteria. Ideal living environment.

2. Advantages of trickle filtration:

2.1. The aeration effect is remarkable, and the biological filtration effect is remarkable;
2.2. Small footprint, vertical multi-layer design will occupy a relatively small space.

Disadvantages of trickle filtration:

2.3. Insufficient physical filtration. The time that water stays on the surface of the filter material is too short to completely purify and reduce the water quality, and it will not have a good adsorption effect on solid waste, thereby affecting the filtering effect.
2.4. The filter box of the fish pond is noisy because its water flow is exposed to the air, there will be noise at ordinary times;
2.5. Affecting aesthetics. The trickle filter is a longitudinal arrangement, which is difficult to conceal in appearance and will affect the overall aesthetics.

Ⅲ. Bottom biological purification filter system

The bottom biological filtration system is composed of a network pipe, water pump, biological sand, and other biological and physical filtration systems. The network pipe and water pump circulate the water body and increase oxygen; the biological sand that is cultivated by microorganisms becomes a biological filter bed at the bottom of the pool. The organic matter in the water is sucked into the sand layer through the water pump pipe network system, and the microorganisms attached to the biological sand are decomposed and oxidized to produce volatile nitrogen and water. At the same time, autotrophic bacteria absorb sunlight to inhibit algae and eliminate the accumulation of substances that deteriorate water quality. Keep the water clear and translucent.

1. Advantages of bottom biological purification:

1.1. No filter tank is needed, saving space, only constant water level;
1.2. Only a small water pump is needed, which is not easy to break, low price, and easy to replace;
1.3. Short construction period (1-5 days);
1.4. The pool water has high clarity and achieves a clear bottoming effect;
1.5. There is no need to change the water within a few years, and it can be cleaned once a year or two without special maintenance.

2. Disadvantages of bottom biological purification:

2.1. The legal person cleaning cycle of the bottom purification system is 1 to 2 years, and manual sand washing is required;
2.2. The filtered fish manure and impurities are deposited in the sand layer, and it is difficult to clean the fish manure in the later stage;
2.3 After a long time, the sand layer is easy to harden, and the excrement is easy to produce nitrite in the sand layer;
2.4. The bottom biological purification pipeline is easy to be blocked.

3. Implementation process of bottom biological purification: laying pipes for circulating water

After laying the pipes with biological sand, connecting with a small submersible pump for circulating filtration, laying a barrier rubber net, and spreading river sand on the top, the solid waste will not have a good adsorption effect, which will affect the filtering effect of the fish pond.

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