With the rapid development of China's economy, swimming venues and water entertainment venues are becoming increasingly popular,The requirements for water quality and quantity are also increasing. Due to the increase in organic components in swimming pool water, the concentration of natural organic matter is high, and the chlorination disinfection process also produces a large amount of chlorination disinfection by-products. The water pollution is serious, and the traditional pressure sand tank filtration process is no longer sufficient and difficult to continue. The application of new technology and processes has become an urgent issue for the long-term development of enterprises.

1、 Equipment Overview

The hydraulic fully automatic and efficient aeration precision filtration system is a new generation of water treatment equipment. The system is based on the theory of water flow characteristic control, imitating the filtration and backwashing principles of gravity valve free filter, and combining with aeration dissolved oxygen process, integrating multiple technical processes such as system process optimization technology and automated fluid intelligent control technology. The main equipment adoptsU PVCThe material is assembled and formed through mechanical and manual welding. It can be designed according to different needs as: single tank, double tank combination, three tank combination, four tank combination, and multi tank combination gravity integrated aeration and fine filtration equipment.

2、 Application scope

The application scope of hydraulic fully automatic high-efficiency aeration fine filter includes: swimming pool water treatment, swimming pool water treatment, seawater swimming pool water treatment, water park water treatment, surfing pool water treatment engineering.

3、 Equipment construction

The hydraulic fully automatic high-efficiency aeration fine filter system includes: inlet pipe, inlet water distribution tank, aeration oxygen tank, gas-liquid separation pipe, water distribution plate, filtration chamber, fine filter layer, clean water tank, cyclone aeration outlet tank, outlet pipe, siphon rising pipe, siphon auxiliary pipe, exhaust pipe, water injector, siphon descending pipe, destruction pipe, destruction bucket and sewage pipe. The inlet water distribution tank is connected to the aeration oxygen tank, the gas-liquid separation pipe is connected to the fine filter chamber, the filtration chamber is connected to the clean water tank, the clean water tank is connected to the cyclone aeration outlet tank, the filtration chamber is connected to the siphon rising pipe, the siphon rising pipe and siphon descending pipe are connected to the sewage pipe, the siphon auxiliary pipe, exhaust pipe, water injector are connected to the siphon transition pipe, and the destruction pipe is connected to the siphon rising pipe. The pipe and siphon downcomer are connected, and a time control device is installed on the destruction box, which can effectively adjust the backwash time, Clean and thoroughly backwash the fine filter layer, which can quickly and efficiently filter out impurities and harmful substances in the water, making the water activated and fresh.

4、 Equipment principle

The hydraulic fully automatic and efficient aeration precision machine system uses physical methods throughout the entire process, namely multi-layer filtration(Fine filtration of seepage well)Slant plate sedimentation(Drinking water treatment)Aeration dissolved oxygen, biochemical treatment(Biofilm filter bed)Automatic backwashing, ultraviolet disinfection, etc. can effectively remove suspended solids, organic matter, heavy metal ions, and other substances on the water surface. During operation, no new substances will be produced or added, and the characteristics of the water body will not be changed. Therefore, it is the safest way.

During system operation, the raw water from the aeration tank rises from the inner bucket and overflows at the top360In the radiation water tank, the water flow drops in three parts and is fully aerated in the air, releasing harmful nitrogen-containing gases such as nitrogen and carbon dioxide from the water while dissolving oxygen from the air into the water.

5、 Process flow

The pool water is treated through a circulation system(Low power circulating water pump)Then the water is sent into the aeration system, and after aeration and oxygen melting, the water flows automatically to the filtration system. After filtration is completed, it undergoes secondary aeration and oxygen melting. The completed water returns to the main water pipe and is then disinfected. It flows back to the tank through the main water pipe, completing a series of cycles, aeration and oxygen melting, composite fine filtration, automatic backwashing, disinfection and other procedures.

6、 Disinfection method

Chlorine disinfection method should be used for water bodies, and ozone, ultraviolet or other disinfection methods can be used if conditions permit. Sodium hypochlorite should be added by gravity to the suction pipe of the circulating water pump. If ozone or ultraviolet disinfection is used, chlorine disinfection should also be supplemented.

7、 Technical parameters

8、 Equipment features

1Loose usage environment: Small size, not easily restricted by environmental factors, convenient for new construction and expansion.

2Modular design: The number of filters can be flexibly set and adjusted according to the needs of pedestrian flow, water quality, circulation cycle, etc.

3Small footprint: equivalent to integrating flocculation, clarification, and filtration functions, with a relatively smaller volume compared to ordinary filtration systems70%.

4High filtration accuracy and stable effluent quality: Unique countercurrent filtration technology achieves a removal rate of suspended solids in water98%Above, the water quality has reached high quality; It can effectively solve water quality problems such as excessive flow in swimming pools.

5Energy saving: no pressure design, unique low resistance water distribution system, energy-saving70～80%Effectively reduce operating costs.

6No chemical pollution: The swimming pool does not require the use of chemical agents such as coagulants, coagulants, and algaecides for auxiliary purification, and poses no potential threat to human health.

7Effective removal of human pollutants: It can effectively remove human pollutants such as urea and oil, and the total dissolved solids in the swimming pool never exceed the standard, effectively avoiding potential threats to human health caused by dissolved substances in the water, avoiding extensive water changes, and saving water90%Energy saving90%.

8Low operating costs: only for regular expenses1/3～1/4.

9Short payback period for investment costs: generally only1～2Year.

10Intelligent work, labor-saving: easy to manage, operate, and maintain.

11Long service life: FullUPVC(perhapsPP)Material, non corrosive, with a long lifespan40Years or more.

9、 Main functions

1Aeration and oxygen melting for urea removal

The pool water enters the equipment for sufficient aeration and dissolved oxygen, while releasing ammonia, nitrogen, etc(The constituent elements of urea)Harmful gases, through the mixing of gas and water, enhance the coagulation and filtration effect of pollutants in water. During a water treatment process, pool water must go through2Secondary aeration increases the dissolved oxygen content in water, enhances the ability of water to kill bacteria and promote bacterial growth, and can effectively degrade organic matter and remove urea from water through a UV catalytic system. The urea content in the treated water can reach1mg/lLeft and right, there is no need to change the water to dilute the urea content, saving a lot of water. The pond water is not only purified, but also freshened and activated. A pool of water is always clear to the bottom, creating a healthy environment.

2The turbidity of the filtered water from the seventh layer is low

In the process of filtration, the main functions are interception and adsorption. The equipment uses multiple layers of composite filters composed of different mineral materials from large to small, greatly enhancing the interception and filtration effect. At the same time, a biofilm is formed on the surface of the filtration medium, which can further adsorb organic and inorganic substances in the water. The minimum particle diameter of the filter medium is0.15Millimeters, much smaller than traditional quartz sand filter media, with extremely strong interception ability and excellent effluent quality. The turbidity of the effluent can be achieved0.4mg/Rising, the pool water is blue and transparent, far below the turbidity of tap water3mg/Raise.

3Do not add coagulants or algaecides

The traditional sand tank system requires the addition of coagulants and algaecides to the water(CuSO4)This leads to an increasing concentration of residual ions in the water, requiring frequent water changes to dilute the ion concentration, resulting in a significant waste of water. The use of hydraulic automation water treatment system prohibits the use of coagulants and algaecides, effectively avoiding the problem of chemical pollution in water. After system processing, the pool water can be used continuously without the need for daily water changes. Only a small amount of water taken away by the human body, evaporated on the pool surface, and backwashed by equipment needs to be replenished. The water quality has always met the standard, saving a lot of water and reducing daily operating costs. Water cost savings can reach80%.

4Water, electricity, and energy conservation

The main water quality issues are bacterial, algal, and urea pollution brought in by the human body. The main purpose of changing water is to dilute the pollution content. According to national regulations, multi-functional pools, amusement pools, public swimming pools, and pressure systems such as sand tank products are used to treat swimming pool water. Indoor pools need to be replaced daily5％～10%The water in the outdoor swimming pool needs to be replaced10％～l5%This greatly increases the daily water consumption of the swimming pool and increases operating costs.

By adopting a hydraulic fully automatic and efficient aeration precision machine system, this problem can be avoided and daily operating costs can be significantly reduced. The water treatment system is a gravity free system, requiring a small pump head to meet the requirements7Rice is enough, which effectively saves electricity costs. Electricity costs can be reduced80%.

5Fully automated operation and backwashing

Backwashing is entirely determined by the working condition of the filter layer in the filter, rather than the unscientific practice of regular backwashing in traditional processes. Due to the continuous interception of suspended solids in the incoming water by the filter layer, the filter layer becomes clogged and the water level rises, resulting in siphon phenomenon. At this time, the filter layer undergoes strong backwashing. After the filter layer is washed clean, the backwashing is completed. During flushing, it does not affect the operation of the equipment. The entire system does not require dedicated personnel to manage, and part-time work is sufficient. Simply press the water pump start button to start the system. To shut down the system, simply disconnect the water pump button.

6Equipment adoptionU PVCMaterials with a long service life40year

All water inlets, return outlets, pipelines, valves, and all water treatment equipment use white water supplyU PVCMade of pure white, beautiful, generous, non corrosive, with no vulnerable parts in the system, non corrosive, and requires no maintenance. Fundamentally solving the problem of rust water and the need for regular maintenance every year, the service life of the water treatment system can reach forty years.

10、 Equipment comparison

1Comparison of filtering accuracy

The hydraulic fully automatic high-efficiency aeration fine filter adopts multi-layer natural anti composite filter material, with the smallest particles0.25Microns can filter out Escherichia coli, algae, and0.25Solid suspended solids above micrometers have a filtered water turbidity of less than0.04NTUThe filtered water has good transparency.

Compared to traditional sand tank filtration or diatomaceous earth filtration, the filtration accuracy is higher than that of sand tank and diatomaceous earth5～10The turbidity is similar to that of sand tanks and diatomaceous earth1/20to1/50.

2Comparison of Equipment Floor Area

The hydraulic fully automatic high-efficiency aeration fine filter is composed of modular combinations, with centralized system installation, saving space. The machine room occupies a small area, which is one-quarter of the traditional sand tank and diatomaceous earth, saving one-time construction investment in the machine room.

Traditional sand tanks and diatomaceous earth are both installed in a dispersed manner, which is complex to install and occupies a large area.

3Comparison of Long Service Life

All hydraulic fully automatic high-efficiency aeration fine filters are adoptedUPVCMaterial with anti-corrosion effect, with a service life of up to40Years or more.

However, traditional filtering sand tanks and diatomaceous earth are both made of carbon steel and fiberglass, which are not corrosion-resistant because the water country label of the swimming pool indicates0.4～0.6mg/LDue to their high chlorine content, traditional filter sand tanks and diatomaceous earth are not corrosion-resistant and have a long service life8-10Year is not enough.

4Comparison of operating costs

The hydraulic fully automatic high-efficiency aeration fine filter adopts gravity type non pressure filtration, with a low head and low power of the water pump used. It is a traditional filter for sand tanks and diatomaceous earth1/3～1/4.

Traditional sand filtration tanks and diatomaceous earth both use pressure filtration, and the use of water pumps has high cultivation and high power.

5Comparison of excellent filtered water quality

The hydraulic fully automatic and efficient aeration fine filter has the function of aeration dissolved oxygen, which enables the dissolved oxygen in water to reach saturation, and the water quality to achieve activation and freshness.

Traditional filtering sand tanks and diatomaceous earth equipment do not have such functions.

6Simple comparison of safe operation

The hydraulic fully automatic high-efficiency aeration fine filter has the function of aeration dissolved oxygen, and coupled with the low density of the filtration layer, it does not require the addition of coagulants, coagulants, and algaecides, which can effectively control the pool waterPHValue has no impact, does not cause secondary pollution to water quality, reduces the concentration of supporting equipment and drugs, and does not harm swimmers' skin and hair. The system has no valves, operates fully automatically, and does not require manual operation, saving 100% of manpower.

Comparison Table of Basic Technical Performance between Hydraulic Fully Automatic and Efficient Aeration Fine Filter and Pressure Sand Cylinder Filtration System:

11、 Processing effect

The water quality fully meets or exceeds the Water Quality Standards for Swimming Pools and Water Parks(GB l2941-91)Dissolved oxygen in water reaches8.8mg/LThe pool water is not discharged or changed, and it is used continuously. The swimming pool water is clear, transparent, colorless, and odorless, with blue waves on the water surface, clear to the bottom, and free of bacteria and algae. Swimming pool water contains oxygen, dissolved oxygen, activation, and a virtuous cycle.

12、 Operating condition configuration

The hydraulic fully automatic high-efficiency aeration fine filter is divided into three system operating conditions: 1. The front pump is running; 2、 The rear pump is running; 3、 The front and rear pumps are running;

When the water level of the processed pool is level with the ground of the equipment room or the distance between the ground of the equipment room and the water level of the pool is not greater than1.2Mi Shi, also known as“Front pump”System. Simple process: The main circulating water pump draws water from the return port of the water tank, lifts the water to be treated and sends it to the gravity energy-saving filter. After aeration and oxygen dissolution, the filtered water circulates back to the water tank by its own weight. This system has simple control and the best energy-saving effect.

When the water level of the treated pool is higher than the ground of the equipment room by a distance of not less than5Mi Shi, also known as“Rear pump”System. Simple process: The pool water to be processed flows back into the fully automatic and efficient aeration fine filter through the circulating return water outlet. After aeration, dissolved oxygen, and filtration, it is then circulated back to the pool through the main circulating water pump under pressure. This system has a wide range of applications, does not take up space, and has slightly lower energy-saving effects than the front pump system.

When the distance between the water level of the processed pool and the ground of the equipment room is less than5Rice, and larger thanl.2In this situation, the pool water to be treated cannot flow smoothly back to the fully automatic and efficient aeration fine filter, and the treated clean water cannot flow back into the pool. A set of circulating water pumps is installed before and after the hydraulic fully automatic high-efficiency aeration fine filter. The first set of circulating water pumps draws water from the pool and lifts the pool water to be treated into the hydraulic fully automatic high-efficiency aeration fine filter. After aeration dissolved oxygen and filtration, the clean water pressure is circulated back into the pool by the second set of circulating water pumps. This system is called“Front and rear pumps”System.

13、 Cycle number

1Determination of cycle period: The cycle period is determined according to“Design Specification for Swimming Pool”As stipulated in the regulations“6～8hour”The specific value is determined by the expected number of people that the swimming pool can accommodate in one cycle, and the upper limit of the number of people that the pool can accommodate in a normal cycle is adopted6Hours, otherwise generally press8Hours are calculated as one cycle.

2Determination of circulating water volume: Generally, it is determined by the water treatment equipment throughout the day24Hourly operation calculation: the required circulating water volume of the selected equipment=Pool water capacity/Cycle period.

3Selection of water pump:

1)The water volume of the pump is equivalent to the circulating water volume(Front pump system).

2)Head of water pump:aThe loss of the connecting pipeline between the water pump and the equipment along the way, plus the height from the water pump axis to the highest point of the equipment, plus500～600mmProtect the water head.bThe pump head of the rear pump system is the sum of the loss along the pipeline from the pump to the swimming pool, the height difference from the pump shaft to the pool water, and500～600mmProtect the water head.

14、 System selection precautions

When choosing a gravity based system, it is often easy to encounter design errors, that is, blindly copying the design parameters of traditional pressure sand cylinder equipment, resulting in various conditions reserved for later civil construction not meeting the installation and operation requirements of the system, causing engineering changes and rework, resulting in unnecessary losses. Here are some basic considerations when selecting a system:

1System based on processing capacity(20～1300cube/hour)Divided into thirteen models, with a processing capacity of20～26cube/The height of the main device for the hour is3.5Rice, processing capacity is26～600cube/The height of the main device for the hour is4～5Rice, processing capacity is600～1300cube/The height of the main device for the hour is5～6Rice. So the net height of the equipment room must meet the height requirements of the main equipment and leave room for it0.3～0.5The construction space of meters.

There is no need to set up a flocculant dosing unit in the process design of the system.

The main equipment of the system is an integrated assembly device, which has certain requirements for ground bearing capacity and generally needs to meet the requirements3ton/Square meters.

When configuring the circulating water pump, the system does not need to consider the head pressure required for host filtration and backwashing, and only needs to meet the requirements for water level increase. In general, taking a standard swimming pool as an example, the head of the main circulating water pump in the front pump system is about7～8Meter, the head of the main circulating water pump in the rear pump system is about8～10The power of the water pump has greatly decreased.

The system backwash is a siphon hydraulic automation, and the backwash time is generally3～3.5In minutes, the instantaneous sewage volume is relatively large, so when designing the main sewage pipe or collection pit of the computer room, and the sewage pump, some surplus should be left.

be careful:When there is a renovation project and the operating condition is the front pump system, the diameter of the swimming pool circulating inlet pipe is generally one size larger than that of the traditional pressure sand cylinder system circulating inlet pipe. When the operating condition is the rear pump system, the diameter of the swimming pool circulation return pipe is generally one size larger than that of the traditional pressure sand cylinder system circulation return pipe. The circulating inlet and outlet pipes of the front and rear pump system are consistent with the traditional pressure sand cylinder system.