Iron and manganese often coexist in water. According to the hygiene standards for drinking water in China, the iron content is ≤ 0.3mg/L and the manganese content is ≤ 0.1mg/L. Long term consumption of water with high iron and manganese content is harmful to the human body and affects product quality in industries such as textiles, papermaking, brewing, food, pharmaceuticals, and beverages. It also generates spots on items, so iron and manganese removal treatment is necessary.
The LCT underground water iron and manganese removal equipment adopts a new process of contact oxidation for iron removal, which is a "natural manganese sand iron removal process" and can also be replaced by quartz sand. The iron and manganese removal filter uses natural manganese sand as the filtering medium and oxygen in the air as the oxidant. After aeration, the iron (manganese) in the groundwater containing iron (manganese) begins to oxidize. When the water flows through the manganese sand or specially designed quartz sand filter layer inside the iron and manganese removal filter, the chemical reaction of the filter material and the biochemical reaction of iron (manganese) bacteria (such as multinucleated bacteria, iron containing bacteria, unicellular iron bacteria, and rust colored bacteria) on the surface of the filter material cause biochemical reactions, contact oxidation reactions, and physical interception and adsorption in the filter material layer. The combined effect of these processes can greatly accelerate the oxidation and solidification of iron (manganese) in the water, and remove iron from the filter material. Separate from water and trap in the filter layer. The groundwater iron and manganese removal equipment produced by Dingyu Environmental Protection Company is suitable for small and medium-sized water supply projects in urban and rural areas, as well as for industrial and mining enterprises that provide their own groundwater sources. It can be used as a pre-treatment equipment for softened water and as a major environmental protection equipment in groundwater treatment processes.
Compared with the traditional aeration method for iron and manganese removal in groundwater, the equipment has the advantages of simple process, fewer treatment equipment, stable and reliable operation, strong adaptability to water quality, high treatment efficiency, and significant economic benefits. Groundwater iron and manganese removal filters have been rapidly promoted in China, and the technology is becoming increasingly mature. The process of removing iron and manganese from groundwater has won the National Science Conference Award and been included in the Outdoor Water Supply Design Specification, the Water Supply and Drainage Design Manual, and the unified textbook "Water Supply Engineering" for higher education institutions.
The LCT pressure type groundwater iron and manganese removal device consists of a complete set of new equipment for iron and manganese removal filters, including a pressure filter tank, a jet injector, a rotor flowmeter, a medium resistance orifice plate, and a backwash water pipe.

[Scope of Application]
The LCT groundwater iron and manganese removal device is suitable for iron removal treatment of groundwater with iron content below 10mg/l, maximum not exceeding 15mg/l, and pH value not lower than 5.5. After treatment, the iron content in the water is less than 0.3mg/l, which meets the GB5749-85 "Water Quality Standards for Drinking Water". Specially suitable for the pre-treatment of groundwater iron removal and industrial water softening and desalination processes in small and medium-sized towns, rural water supply, and self sourced water sources for industrial and mining enterprises.

Technical indicators
1. The processing capacity of this series of groundwater iron and manganese removal devices is 120-2500t/d.
2. When the iron content in the raw water is less than 15mg/l, after being treated by groundwater iron and manganese removal equipment, the iron content in the effluent can meet the standards for drinking water and industrial production water. If there are special requirements for the iron content in the water, our company can design it specifically according to the requirements.
3. The local sewage iron and manganese removal device can operate continuously or intermittently.
4. The filtration rate of the groundwater iron and manganese removal equipment is 8-12m/h, and the backwash strength is 15l/cm ².