1. Comparison of mainstream filters adapted to rust and turbid raw water
In view of the turbidity problems caused by excessive raw water rust, sediment, and suspended solids, the four commonly used industrial water purification filters in the industry are adapted to different water quality conditions and production needs. Their actual advantages and disadvantages are as follows：
Basket filter: It belongs to the front-end coarse filtration equipment. The internal filter has a large expansion area, high dirt and dirt capacity, and extremely low operating pressure loss. It can quickly intercept large pieces of rust and large particles of sediment impurities in the water, and supports continuous operation with large flow rates. It is not prone to clogging problems.However, the overall filtration accuracy is low. It can only handle large particles of impurities at the millimeter level, and cannot intercept fine iron rust colloids at the micron level. It is only suitable as the first pretreatment equipment for a complete set of water purification processes to initially alleviate the problem of turbidity of water quality.
Industrial water purification filter
Bag filter: The filtration accuracy covers the range of 1-200µm, taking into account the large flow overcurrent capacity and the medium-precision filtration effect, can intercept most rust particles and suspended impurities, the filter bag is simple to disassemble, assemble and maintain, and the long-term consumables procurement cost is very low.The purification effect of raw water with moderate rust and turbidity is excellent, but the divalent iron ions dissolved in the water cannot be completely removed. It must be used in combination with back-end fine filtration equipment.
Manganese sand multi-media filter: Specially designed for industrial scenes to remove iron and manganese and reduce the turbidity of water bodies. It is the core main equipment for treating iron rust and turbid raw water.Through the dual action of catalytic oxidation + physical adsorption of manganese sand filter material, the dissolved divalent iron ions in the water can be converted into insoluble iron oxides and completely intercepted, and the yellowing and turbidity problems of water bodies can be solved from the root cause. The equipment supports automatic and timed backwashing. The service life of the filter material can reach 3-5 years without frequent replacement, and it is fully adapted to the continuous treatment scenario of long-term high iron content raw water.
Precision security filter: high-precision end-stage filtration equipment with a filtration accuracy of up to 0.1-20µm, which can intercept fine rust powder and colloidal impurities remaining in the pre-process, and serve as the last line of defense of the pretreatment unit to further deeply purify the water quality and protect the core high-value water purification equipment such as reverse osmosis and demineralized water at the back end, but it cannot handle dissolved iron ions, and it must not be used alone to solve the water quality problem of excessive rust.
2. To deal with the rust and turbidity of raw water, which filter is better to use?
Judging from the three dimensions of actual filtration effect, long-term operating cost, and adaptability to working conditions, manganese sand multi-media industrial water purification filters are the best choice for dealing with rust and turbidity problems in industrial raw water.Unlike ordinary filter screens and filter bags that are purely physically intercepted, it can not only physically intercept suspended solids such as sediment and rust, but also remove dissolved iron-manganese ions from the water through catalytic oxidation reaction, and solve the problem of yellowing and red rust precipitation in water bodies from the root cause.At the same time, the equipment supports fully automatic backwashing, long-term operation is stable, and the operation and maintenance cost is extremely low. It is suitable for various industrial scenarios such as factory-owned groundwater, old pipe network industrial water, and circulating cooling water replenishment. It is the main core equipment for industrial iron removal and turbidity reduction.
3. Real landing cases
In a local machining factory in Xi'an, the factory directly uses its own groundwater as production water. There have been long-term problems of yellowing water quality, rust impurities, and turbidity of water bodies, which have led to frequent blockage of water transmission equipment pipelines in the workshop, and yellowing defects on the surface of metal workpieces after cleaning, which seriously slows down the overall production efficiency.After comparing different filtration equipment from many parties, the company chose the exclusive iron removal and turbidity reduction water purification solution customized by Xi'an DIEN Water Treatment.
The complete set of solutions takes the fully automatic manganese sand multi-media industrial water purification filter as the core main equipment, with the front-end basket filter for coarse pretreatment, and the back-end precision filter for end-end fine filtration. After the installation and commissioning of the complete set of equipment is completed, there is no need for special personnel to be on duty, and the whole process of filtration, backwashing, and sewage discharge is fully automatic.After the equipment is put into operation, the iron ion content and suspended solids indicators in the raw water are all up to standard, the water quality of the effluent is clear and translucent without yellowing and turbidity, the frequency of equipment pipeline blockage is directly reduced by 90%, and the surface quality of the workpiece after cleaning has been significantly improved, which perfectly solves the water quality problems that have plagued the factory for many years.
