Recently, the Science and Technology Promotion Center of the Ministry of Water Resources officially released the "List of Practical Technologies (Products) for Rural Water Supply Quality Assurance (Second Batch)", and the "Combination Method Defluoridation Water Treatment Technology" developed by Rinland Environmental Technology (Beijing) Corp., Ltd.was successfully selected. The list was guided by the Department of Rural Water Resources and Hydropower of the Ministry of Water Resources and strictly selected through procedures such as technology solicitation, expert review, local solicitation of opinions, comprehensive review and publicity. It contains a total of 27 practical technologies (products) and aims to promote the modernization and improvement of rural water supply water quality assurance capabilities.

As an innovative enterprise focusing on the field of water treatment, Rinland Environmental Protection's combined defluoridation water treatment technology innovatively integrates various defluoridation processes such as adsorption method, low energy consumption membrane method, and pharmaceutical method to build a flexible and efficient treatment system. Its core process flow can flexibly adopt combination modes such as water supply adsorption method + regenerated wastewater agent method, water supply low-energy consumption membrane method + wastewater adsorption method, or water supply low-energy consumption membrane method + wastewater adsorption method + wastewater agent method according to actual needs. It can not only achieve accurate defluoridation of water supply, but also ensure the compliance discharge of concentrated wastewater, achieve dual satisfaction of treatment effect and environmental protection requirements, and have good technical adaptability and environmental friendliness.

Rinland's environmental protection combined method fluoride removal technology has multiple technical advantages, achieving comprehensive improvements in fluoride removal effect, treatment efficiency, and water production rate, while effectively reducing construction and operation costs. It has the characteristics of small footprint, convenient operation, and low difficulty in wastewater treatment. This technology is suitable for water sources with groundwater fluoride concentrations in the range of 1.0mg/L~10.0mg/L, covering different project types with daily water supply scales from 10 cubic meters to 100,000 cubic meters, including all Type III, Type IV and Type V rural water supply projects. It has been applied on a large scale in many places across the country. This technology has successfully solved the drinking water safety problem caused by high fluoride-containing groundwater. The equipment processing capacity covers 1 to 5,000 tons/hour, and the fluoride content of the effluent has stably reached the standard, achieving a good demonstration effect.

From the "11th Five-Year Plan" to the "14th Five-Year Plan", Rinland Environmental Protection has been deeply involved in the field of rural drinking water for 20 years. The combined method of fluoride removal technology has been widely used in areas with high fluoride water concentrations such as Anhui, Henan, Inner Mongolia, and Shaanxi. Up to now, the company has participated in the construction of more than 500 rural and urban water plants, solving the drinking water safety problems of more than 10 million people, and formed a mature application system covering different water source conditions and different water supply scales.

The rural drinking water safety project is about to enter the "15th Five-Year Plan". Rinland Environmental Protection will continue to strengthen technology promotion and iterative upgrades in accordance with the requirements of the Science and Technology Promotion Center of the Ministry of Water Resources, and provide technical service guarantees so that high-quality and practical defluoridation technology can benefit more rural areas, and contribute more to building a strong defense line for rural water supply safety and assisting the implementation of the rural revitalization strategy.