Integrated water purifier manufacturer for power plant circulating water

Integrated water purifier manufacturer for power plant circulating water

Integrated water purifier manufacturer for power plant circulating water

working principle:

Active sand filterThe operation can be divided into two relatively independent yet simultaneous processes: raw water filtration and filter material cleaning and regeneration. The two are completed at different positions on the same filter, with the former relying on high differential or pump lift for power, while the latter is accomplished through compressed air.

Raw water filtration

The raw water flows into the water distribution ring at the bottom of the filter from a high position, and gradually flows upward through the filter bed through the flow channel and conical distributor. Impurities in the raw water are continuously intercepted and adsorbed, and the final filtrate is discharged from the overflow weir at the top of the filter, completing the filtration process.

Filter cleaning and regeneration

The filtration process continues, and impurities in the raw water are constantly accumulated and trapped on the surface of the filter material, with the bottom of the filter material being the one that intercepts pollutants. The compressed air sand extraction device located at the bottom of the filter first delivers this part of the filter material in batches and quantitatively to the three-phase (water, air, and sand) separator at the top through the sand washing pipe. The air is discharged, and the water and sand then enter the connected sand washing device for cleaning. The sand washing water is discharged through a separate pipeline, and the cleaned sand is redistributed to the entire surface of the filter bed, achieving the process of cleaning and circulating the filter material.

Active sand filterAdvantages of
Small footprint, large processing scale
Active sand filterAdopting modular design, the vertical structure is compact, without any auxiliary devices or buildings, thus occupying a very small area and having a large processing capacity.
High influent concentration, pure effluent effect
Active sand filterIt also has a biological purification effect, which not only removes solid suspended solids, but also removes BOD, ammonia nitrogen, and other heavy metals from the water, thereby further purifying the water quality.
No need for backwashing, simple operation and control
Traditional sand filtration requires backwashing every day, consumes a lot of manpower, and the operation and control are cumbersome.Active sand filterIt can continuously self clean without stopping, adapt to changing process conditions, and has stable treatment effects; No need for dedicated personnel to operate and control.
Efficient and stable
The filtered sand particles are quickly cleaned and self purified in continuous circulation, so sand filtration can achieve sustained and stable high efficiency, ensuring the continuity and stability of the effluent water quality. At the same time, it can withstand higher loads of suspended solids in the incoming water.
Less maintenance and upkeep, strong applicability
The entire sand filter has no operating components and requires minimal maintenance, making it highly applicable. Continuous operation without the need for shutdown maintenance and backwashing. The process is suitable for physical and chemical treatment or biological treatment, as well as a combination of the two treatment methods.
Low operating costs
Active sand filterIt can rely on gravity flow for water distribution, saving operating energy consumption. At the same time, the water outlet relies on the obtained head and can flow naturally to the place where it needs to be reused.
Highly automated, with simpler control
Active sand filterThe online system monitors the coordinated uniformity of sand particle circulation, which can ensure smooth and stable operation of the entire process.
Relying onActive sand filterThe feedback control system can optimize the entire process operation status according to specific purposes, achieving different operating conditions such as inlet flow rate or suspended particle load without affecting the effluent effect.
The high degree of automation not only ensures smooth operation, but also greatly reduces labor costs and operational errors, ensuring the balance of effluent quality.

Types of activated sand filters

Ordinary activated sand filter: mainly removes suspended solids (SS) and phosphorus in sewage;

Activated sand biofilter: It can remove suspended solids (SS) in sewage and effectively remove organic pollutants such as COD and BOD in sewage;

Denitrification type activated sand filter: mainly used to remove nitro nitrogen from wastewater.

Active sand filter-Comparison of traditional filters