INTRODUCTION

The filter tank is usually made of high-quality carbon steel or stainless steel, possessing good pressure resistance and corrosion resistance, and providing stable protection for internal components. Pyrolusite sand filter media is the key core. It is a granular material made from natural pyrolusite ore through processing techniques such as crushing and screening. Its main components include manganese dioxide and so on. It is brown in appearance, hard in texture, and has unique catalytic and adsorption effects. These pyrolusite sands are filled in the tank according to specific particle size requirements to form an effective filtration layer.

The water distribution device can ensure that the water to be filtered is evenly sprinkled on the upper layer of the pyrolusite sand filter media, enabling the water flow to pass through the filter media layer evenly. The water collection device is responsible for collecting the filtered clean water and discharging it through the outlet pipeline. This equipment comes in a variety of specifications and can be flexibly selected according to the water treatment volume and water quality conditions. It can meet the needs of water treatment projects ranging from small household water treatment to large-scale industrial production and municipal water supply. It is easy to install, simple to operate, and runs stably and reliably, continuously and effectively purifying water quality. It is a capable assistant for dealing with the problem of excessive iron and manganese in water.

WORKING PRINCIPLE

The working principle of pyrolusite sand filters is mainly based on the special effect of pyrolusite sand filter media on iron and manganese ions in water. When the raw water containing iron and manganese ions enters the filter tank from the inlet, it first passes through the water distribution device. The water distribution device evenly disperses the water, making it evenly contact the surface of the pyrolusite sand filter media.

During the process of the water flowing through the pyrolusite sand filter media layer, manganese dioxide in the pyrolusite sand will play a catalytic role. Under its catalysis, the divalent iron ions in the water will react with the dissolved oxygen in the water, and be rapidly oxidized into trivalent iron ions and form ferric hydroxide precipitation. As for the manganese ions, they will also be oxidized under the action of the pyrolusite sand to form manganese dioxide precipitation. These precipitates will attach to the surface or pores of the pyrolusite sand filter media and thus be intercepted, and will not continue to flow downward with the water flow. While water and other harmless substances can smoothly pass through the pyrolusite sand filter media layer. Finally, the relatively pure water with iron and manganese contents meeting the standards is collected by the water collection device and flows out from the outlet, achieving the effective removal of iron and manganese impurities in the raw water and improving the water quality, making the water clearer and more suitable for use.

MAIN PERFORMANCE AND CHARACTERISTICS

l High-Efficiency Iron and Manganese Removal Capacity: Thanks to the unique chemical properties and structural characteristics of pyrolusite sand filter media, it has an excellent removal effect on iron and manganese ions in water. It is especially suitable for water sources with excessive iron and manganese contents, and can reduce the concentrations of iron and manganese in water to the range that meets various water use standards, ensuring the safety and applicability of water use. Whether it is domestic drinking water or process water with water quality requirements in industrial production, it can solve the water quality problems caused by iron and manganese.

l Stable and Reliable Operation: The overall structural design is reasonable, and each component is of reliable quality. Moreover, the pyrolusite sand filter media itself has stable properties. As long as it operates according to the normal operation process and undergoes necessary maintenance regularly, the equipment can operate stably for a long time, is not prone to malfunctions, continuously provides stable and up-to-standard water quality for the water use system, reduces problems such as water quality fluctuations caused by equipment failures, and also reduces the subsequent maintenance cost.

l Wide Range of Adaptability: Although it mainly deals with iron and manganese impurities in water, by cooperating with other filtering equipment or adjusting operating parameters, pyrolusite sand particle size, etc. according to different water quality conditions, it can also adapt to a variety of complex water quality conditions to a certain extent. It is suitable for treating water from different sources such as municipal water supply, groundwater, and industrial circulating water, and has good versatility, playing an important role in many water treatment links.

l Cost-Effectiveness Advantage: Pyrolusite sand, as a filter medium, has a relatively wide range of sources and a reasonable price. Moreover, after being used for a period of time, its filtration performance can be partially restored through simple maintenance means such as backwashing, extending its service life. Compared with some equipment that uses expensive filter materials or complex treatment processes to remove iron and manganese, it has better cost-effectiveness and is suitable for water treatment projects with requirements for cost control.

l Simple and Easy Operation: The operation process of the equipment is not complicated. Workers only need to control the inlet and outlet of water and carry out regular backwashing and other routine operations according to the specified time interval. There is no need for complex professional knowledge and skills. Ordinary personnel can master the operation method proficiently after simple training, facilitating its promotion and use in places of various scales.

APPLICATION FIELDS AND INDUSTRIES

l Industrial Field: In some industrial productions with high water quality requirements, such as the textile printing and dyeing industry, excessive iron and manganese ions in water may affect the dyeing effect, resulting in problems such as uneven color of fabrics. Pyrolusite sand filters can effectively remove iron and manganese in water, ensuring the quality of dyeing water and improving the quality of printed and dyed products. In the paper industry, iron and manganese impurities may cause paper to turn yellow and become brittle. Using pyrolusite sand filters to pre-treat the water source can avoid these problems and ensure the production of high-quality paper.

l Municipal Water Supply Field: When groundwater in some areas is used as the source of municipal water supply, the situation of excessive iron and manganese contents is often common. Pyrolusite sand filters, as important equipment in the pretreatment or advanced treatment process, can specifically remove iron and manganese in water, reduce the burden on subsequent treatment processes, improve the processing efficiency of the entire water supply system, ensure the safety and hygiene of residents' water use, enable residents to use clear and odorless drinking water, and also help to reduce problems such as blockage and corrosion of the water supply pipeline caused by the precipitation of iron and manganese in the pipeline, and extend the service life of the pipeline.

l Sewage Treatment Field: For some industrial wastewater or domestic sewage containing iron and manganese ions, pyrolusite sand filters can first filter and treat them to remove iron and manganese impurities, avoiding these impurities from affecting the effects of other treatment processes in the subsequent sewage treatment process. Or in the sewage reuse project, it can ensure that the water quality of the recycled water meets the relevant standards, improve the reuse rate of water resources, and realize the rational utilization of water resources and environmental protection.

l Rural Water Supply and Small Water Supply Systems: In rural areas or some small community water supply systems, the water source is often groundwater, and the phenomenon of excessive iron and manganese is relatively common. Pyrolusite sand filters are easy to install, have low costs, and operate stably, which are very suitable for such small water supply systems. They can effectively solve the problem of excessive iron and manganese in local residents' water use, improve the water quality, and ensure the health and living convenience of residents.

SUMMARY

Pyrolusite sand filters, with their unique filter media characteristics, scientific working principle, and many excellent performance characteristics, have shown indispensable value in multiple important fields such as industry, municipal, sewage treatment, and rural water supply. They are like the 'iron and manganese busters' in water quality purification, quietly contributing to ensuring the cleanliness and efficient utilization of water resources, helping to stabilize the development of various industries and improve people's living quality. With the continuous progress of science and technology, it is believed that pyrolusite sand filters will continue to make breakthroughs in aspects such as improving filtration precision, optimizing cooperation with other processes, and expanding applications, further meeting the increasingly diverse water treatment needs of society and becoming one of the key supporting equipment for creating a high-quality water environment and promoting sustainable development.