Swimming pool water treatment system

DAWT·2022-05-09

System Introduction

The impurities in swimming pools and swimming pools are mainly dirt, bacteria, cosmetics, oil and sweat secreted by the body, as well as sundries, dust, leaves, and fungi and algae that are brought into the pool by the outside world. Most of these impurities are insoluble in water, and some float to the water surface, some are mixed in water, and some settle to the bottom due to their specific gravity. There is a process and time interval for the floating and sinking of impurities. The speed of floating and sinking is not only affected by the specific gravity, but also by the water flow.

If the backwater system of the swimming pool water circulation filter is installed on both the water surface and the bottom of the water, and the water surface backwater system can suck the impurities with a specific gravity of less than 1kg/l and equal to 1kg/l into the circulation filter system, at the same time, the bottom water return system can The impurities in the water with specific gravity greater than 1kg/l and equal to 1kg/l are sucked into the circulating filter system. In this way, only impurities on the surface and bottom of the water need to be treated at the same time.

How it works

If the pool water does not have a return water system on the water surface to circulate, then the pool surface is a dead water area; if the pool water does not circulate and filter at the bottom of the pool, then the pool bottom is a dead water area. When the treated pool water enters the pool water supply, it is required to distribute the water evenly, without dead zone and short flow.

There are two water supply methods: vertical water supply at the bottom of the pool and horizontal water supply at the pool wall; there are also two return water methods: the skimmer plus bottom drain return water, and the overflow tank plus bottom drain return water approach. By arranging and combining the water supply and return methods of 2×2, four swimming pool water circulation methods can be obtained. These swimming pool water circulation methods are used abroad. They are: a. The best circulation method: ① Vertical water supply at the bottom of the pool, overflow The bottom of the sink is drained back to the water system. b. The most commonly used circulation method: ②The water is supplied horizontally on the wall of the pool, and the skimmer is added to the bottom and drained back to the water system. c. Available circulation methods: ③ Vertical water supply at the bottom of the pool, skimmer and bottom drainage system. ④Water is supplied horizontally on the wall of the pool, and the overflow tank is bottomed and drained back to the water system.

Process flow

1. Downstream

The whole circulating water is sent into the pool through the water supply port located below the water surface of the end wall or side wall of the pool, and then the corresponding volume of water used is retrieved from the return water port located at the bottom of the pool, purified and then sent back to the pool for continued use. cycle.

Downstream construction is simple and the cost is low, but dead water areas are prone to occur, and floating objects are likely to remain on the pool surface, which needs to be removed manually.

2. Counterflow

The whole circulating water is sent into the pool through the water supply port or water supply tank set at the bottom of the pool, and then the corresponding volume of outdoor water that will be used will be removed through the overflow tank set on the outside of the pool wall. After purification, it is sent back to the pool for continued use. .

The counter-flow water distribution is relatively uniform, but the construction requirements are large, and a balanced pool needs to be built, which is prone to short-circuiting of the pool water.

3. Mixed flow

60% - 70% of the total circulating water is taken back through the overflow return tank set on the outside of the pool wall, and the other 30% - 40% of the water is taken back through the return water outlet set at the bottom of the pool. After the two parts of circulating water are combined for purification, they are sent back to the pool through the bottom of the pool for continued use.

Mixed flow has higher requirements on construction and is generally not used.