Hunan Changsha Carbon Steel - Fully Automatic Shallow Sand Filter Quotation

Hunan Changsha Carbon Steel - Fully Automatic Shallow Sand Filter Quotation

Product Introduction

The fully automatic shallow filtration system is composed of multiple standard high-speed sand cylinder units, which are equipped with * water distributors and collectors inside, and have * bidirectional automatic flushing valves. It can achieve individual backwashing of multiple standard high-speed sand cylinders during normal system operation, with fully automatic program control. It has the advantages of low backwash water consumption, convenient equipment installation, and easy operation. This device has high traffic and does not require maintenance. According to different user requirements, there are two series: vertical and horizontal. Suitable for water quality treatment of industrial and civilian circulating water systems.

working principle

When the system is in a filtered state, unfiltered water is evenly distributed through a self-developed water distributor, and the water passes through the packing layer (refined homogeneous quartz sand/garnet) inside the filter in a laminar flow state. When water flows through the packing layer, impurities are trapped within the packing layer. There are multiple evenly distributed water collectors at the bottom of the filter, which collect and extract the filtered water evenly. Horizontal flow filtration can enable the filter to filter at high flow rates and still achieve good filtering effects.

Backwash status:

As impurities accumulate in the packing layer, the internal head loss will continue to increase. When the pressure head loss of the inlet and outlet reaches the set value, the system will automatically activate the constant pressure device to switch to the backwash state. When this backwash is completed, the hydraulic valve changes the water supply direction to achieve backwashing one by one, making it easier to clean the accumulated impurities.

When the system is in backwash state, filtration continues, and the standard unit sand cylinder to be backwashed is not filtered, while other standard unit sand cylinders in the system are still being filtered. The filtered clean water is used to backwash the standard unit sand tank, while the rest is still sent to the user. The backwash wastewater is discharged through the backwash drainage outlet of the hydraulic valve. In the fully automatic and efficient filtration system of the high-speed sand tank, a special water collector design allows the fillers to rub and wash each other, maximizing the backwash efficiency and reducing the required backwash water (cleaning water), while ensuring no material leakage during backwash. A standard unit sand cylinder is backwashed for 2 minutes. After backwashing, the internal pressure head loss of the standard unit sand cylinder is reduced to a reasonable range. The constant pressure device gives a recovery signal, and the hydraulic valve returns to the filtering state. The next standard unit sand cylinder is ready to enter the backwash state.

Product Features

1）Small size, easy to install, and space saving.

It can be installed outdoors without the need for building a house, saving construction costs. It occupies a very small area and can be installed indoors or outdoors, as well as in layers, with strong adaptability;

2）Compact structure and space saving; The product has good anti-corrosion performance and can be installed both indoors and outdoors.

3）The equipment has good anti-corrosion performance and a long service life.

4）The filtering water volume is large and the filtering effect is good.

5）The filtration flow rate is fast, and the normal filtration rate can be around 40m/h. Depending on the water quality, it can reach 60m/h; The filter backwash uses product water and does not require a booster pump or backwash pump; The backwash lasts for 2-3 minutes, and the backwash water volume is less than 3m ³.

6）High filtration accuracy, impurity filtration accuracy can be below 0.10mm, and effluent turbidity can be less than 0.5NTU. The filtration system consists of standard unit sand tanks, and the filtration flow rate can be increased from 30.6 cubic meters per hour to 2500 cubic meters per hour.

7）Automatic backwashing: The backwashing of this device is automatically recognized and controlled by an intelligent control system, without the need for manual intervention. Even if there are fluctuations in suspended solids in the water, the device may automatically adapt.

8）Continuous water supply; When the device is backwashed, the filtration process is carried out simultaneously, and the system continues to supply water as usual.

9）The use of * cloth and water collection device, due to the water distribution system and evenly distributed water collectors of the filtration system *, results in a layered flow of water throughout the entire filtration process. The surface of the filter sand bed remains flat throughout the filtration process, ensuring stable effluent quality.

10）The selection of refined quartz sand or garnet as the filtration medium is based on the water quality, and homogeneous filter media with a small particle size of 0.16mm can be used.

11）*Low operating costs, saving electricity, water, and maintenance costs.

（1）Power saving: The system has an automatic backwash valve, and the backwash of the sand filter tank is not carried out simultaneously. Instead, it takes turns backwashing one by one under normal system operation, without the need to consider setting up a backwash water pump. Compared with other sand filtration equipment, the required head of the filtration water pump is 6-7m lower.

（2）Water saving: Due to its water replenishing and collecting devices, as well as a standardized tank, the system can effectively backwash the medium layer without the need for compressed air. The water used for backwashing is filtered clean water, so the amount of backwashing water consumed is small. The backwash water volume of a single tank is fully automatic shallow sand filter. Only 1m ³/min, with a backwash time of 2-3 minutes.

（3）Save maintenance costs: The entire system does not have mechanical or electric valves, and only relies on multifunctional valves to control the system's backwashing. Due to the fact that the multifunctional valve has no wear and tear, a long service life, and no damage records within 10 years, the management cost is low.

Scope of Application

1. The filtration of industrial water has certain system requirements for water quality. For example, the filtration of oxygen lance water, boiler, and heat exchanger water supply in steel plants can filter out impurities in water and avoid blockages in pipeline nozzles.

2. Industrial circulating water filtration system.

3. Raw water treatment - It can filter surface river water, lake water, seawater, reservoir water, well water, and urban tap water as water sources for urban residential areas to remove sand particles, suspended solids, algae, organic matter, etc. from the water.

4. Agricultural irrigation - especially suitable for high flow, high impurity water sources, such as irrigation of farmland, parks, and lawns on golf courses.

5. Water for food processing industry, papermaking industry, treatment of industrial circulating water in power plants, pre-treatment of purified water for industrial and medical use. Recycling of industrial production water and treatment of industrial wastewater.

6. Industries such as aquaculture, swimming, and water parks.

7. Landscape circulating water.

8. Used for industrial water, domestic water, and municipal water supply systems that require effluent turbidity ≤ 5mg/L to meet drinking water quality standards;

9. Removal of suspended solids and solid substances in industrial wastewater;
10. Can be used as pre-treatment equipment in ion exchange softening and desalination systems, as well as coarse filtration equipment for industrial water supply with low water quality requirements;

And used in swimming pool circulation treatment systems, cooling circulation water purification systems, etc.

Hunan Changsha Carbon Steel - Fully Automatic Shallow Sand Filter Quotation