There are several types of mainstream well water filtration equipment on the market, and the shortcomings in dealing with the mixed water quality of sediment + iron-manganese are very obvious.：
Ordinary quartz sand filter: It has a good effect on intercepting suspended sediment. It can completely trap large particles of fine sand in the filter layer, but it has no ability to oxidize divalent ferromanganese at all. It can only filter the iron rust that has been oxidized and precipitated. It has no effect on the colorless ferromanganese ions dissolved in the water. It will still turn yellow after standing in the water for a few hours.
Single manganese sand filter: Relying on the catalytic oxidation layer on the surface of manganese sand, it can efficiently adsorb and remove ferromanganese ions to solve the problem of yellowing and rust water in water bodies, but in the face of high-content sediment, fine sand will quickly fill the gaps in the manganese sand particles, and the entire filter layer will be pasted to death. The backwash can't be washed out at all. After one or two months of operation, the compaction fails, and the ability to remove iron and manganese is completely lost.
Well water filtration equipment
Multi-stage integrated well water filtration equipment: Using a hierarchical series process, the front quartz sand unit intercepts all the sediment first, and the middle section is equipped with a low-pressure aeration device to fully oxidize the dissolved state of divalent ferromanganese in the water into a solid precipitate. The special manganese sand filter layer at the rear is deeply adsorbed to remove ferromanganese oxides, and the whole process is equipped with automatic backwash logic to regularly flush out the silted impurities in the filter layer, while taking into account the interception of sediment and the removal of ferromanganese, which is the optimal solution for this kind of composite pollution of well water conditions.
A centralized water supply project in a village and town in Zhenyuan, Gansu Province, uses deep groundwater. The sediment content of the water quality test exceeds the standard by 3 times, and the ferromanganese index far exceeds the national standard limit. The raw water is pumped up and it turns yellow directly, and the fine suspended sand can be seen with the naked eye. The direct water supply will quickly block the water taps and water heaters of residents' homes. Heat transfer pipes.A single tank of manganese sand filter was tried in the early stage, and it ran for less than 2 months. The sediment completely covered the manganese sand filter layer, and the problem of yellowing of the water rebounded repeatedly, and the water supply of the whole village could not be stabilized to the standard.
DIEN's technical personnel stayed on the spot for 3 days to take water in time for testing, and customized multi-stage integrated well water filtration equipment based on the scale of daily water supply. The front-mounted thickened quartz sand tank first intercepts all the sediment, and the supporting unpowered aeration tower is fully oxidized with ferromanganese ions, and the rear-mounted special grade is equipped with ferromanganese filtration equipment, and the backwash cycle is dynamically adjusted according to high sediment working conditions.The equipment has been in operation for 11 months, the water is clear and translucent, and no sediment particles can be seen with the naked eye. The ferromanganese index is stable and up to standard throughout the process, and the taps and pipes of residents' homes no longer show yellow-brown rust.Feedback from the project leader: "Before, the problem of coexistence of sediment and ferromanganese could not be solved with a single tank of equipment. It was particularly troublesome to manually disassemble the tank and wash the filter material every week.This set of multi-stage equipment operates automatically, without frequent manual care, and steadily meets the daily water supply needs of thousands of people in the village.”
Well cement sand and ferromanganese exceed the standard at the same time. Avoid using a single filtration equipment to save trouble. There are inherent shortcomings in single-tank quartz sand or manganese sand filtration. Multi-stage series equipment is the best solution for adapting to composite polluted well water.If you also have the problem of turbidity and yellowing of well water, please contact us DIEN Water treatment to solve it for you!
