In the field of sewage treatment and water resource reuse, MBR, also known as Membrane Bio-Reactor, is an innovative water treatment technology that combines activated sludge methods with membrane separation techniques. There is a wide variety of membranes, which can be classified according to separation principles into reaction membranes, ion exchange membranes, permeable membranes, etc.; by the nature of the membrane, into natural membranes (biological membranes) and synthetic membranes (organic and inorganic membranes); and by the structural type of the membrane, into flat sheet, tubular, spiral, and hollow fiber types, among others. Based on the pore size of the membrane, they can be divided into ultrafiltration membranes, microfiltration membranes, nanofiltration membranes, reverse osmosis membranes, etc. Suzhou Clear Environmental Technology Co., Ltd. has been dedicated to domestic sewage treatment for 23 years, exporting its products to more than 50 countries and regions, and holding a market share of 47% in major scenic areas and rural areas around the world. The company's product technology and engineering processes have always been upgraded in tandem with international standards, and it is the sole agent for the purification tank products of Fuji Industrial Co., Ltd. in Japan. The main products include the SW low-energy biological disc domestic sewage treatment equipment, OGA oil-containing sewage treatment device for the catering industry, VGS vertical oil-water separator for industrial use, SW-Y hospital sewage treatment equipment, sewage lifters, and large-scale sewage pumping stations, etc. The SW domestic sewage treatment device is a low-energy, high-efficiency sewage treatment device with a core technology of composite biochemical sewage treatment. The rotating biological treatment unit is the core part of the SW device, which widely absorbs the most advanced sewage treatment technologies, integrates the advantages of various low-concentration organic sewage treatment processes, and combines various new technologies such as air-water mixing and accumulation, biological disc technology, contact oxidation technology, brush aeration technology, biological forced self-cleaning technology, and cascade treatment technology, forming the unique composite sewage treatment technology of the SW process.

Hospital wastewater contains a large number of pathogens, organic matter, and suspended solids. If it is discharged directly without treatment, it can cause serious pollution to the surrounding water bodies and soil. At the same time, hospital wastewater may also contain harmful substances such as radioactive materials and heavy metals, posing a threat to people's health. Therefore, to build a "waste-free hospital," it is essential to strengthen wastewater treatment to ensure that the discharged wastewater meets the standards.The following are essential stages of wastewater treatment. Pretreatment: Before entering the treatment system, hospital wastewater needs to undergo pretreatment to remove suspended solids and large particulate organic matter. Pretreatment can use equipment such as screens and sedimentation tanks. Biological Treatment: Biological treatment is the core link in the treatment of hospital wastewater. Organic matter in the wastewater is decomposed into harmless substances through the metabolic action of microorganisms. Advanced Treatment: Advanced treatment is a further treatment of the wastewater after biological treatment. Technologies such as filtration, adsorption, and membrane separation can be used to remove residual organic matter and pathogenic microorganisms from the wastewater. Disinfection: The disinfection of medical wastewater is the last and very important step in the medical wastewater treatment process. Disinfection can use technologies such as ozone, active oxygen, chlorine gas, and ultraviolet light to remove pathogens and bacteria from the wastewater.

Water covers 70% of the Earth's surface. Access to safe drinking water is a fundamental need for all humans. The World Health Organization reports that 80% of diseases are transmitted through water, including bacterial, viral, and parasitic illnesses such as typhoid, cholera, meningitis, polio, hepatitis, skin infections, and gastrointestinal diseases, which are spread through contaminated water. It is reported that 75% to 80% of water pollution is caused by domestic sewage. Waste from industries such as sugar production, textiles, electroplating, pesticides, pulp, and papermaking is polluting water bodies. Rivers contaminated by pollutants have foul odors and support fewer species of flora and fauna. 80% of the global population faces issues with water safety. A significant amount of untreated domestic sewage is discharged into rivers, containing toxic substances, solid waste, plastic debris, and bacterial contaminants that cause water pollution. The untreated discharge of various industrial effluents into rivers is a major cause of water pollution. Harmful substances discharged by industries pollute both surface water and groundwater. The pollutants vary depending on the nature of the industry. Toxic metals entering water bodies reduce the quality of water. 25% of pollution is caused by industrial activities, which pose a greater risk to human health. Combating water pollution is an urgent matter.

With the increased awareness of environmental protection and the widespread adoption of sustainable development concepts, the medical industry has also begun to explore more environmentally friendly operational models. The "Waste-Free Hospital" as a practice of this concept, aims to achieve the green transformation of hospital operations by reducing waste generation, recycling resources, and improving energy efficiency. A "Waste-Free Hospital" refers to the process during medical activities, where scientific management and technological innovation are used to minimize waste production, achieve resource utilization, reduction, and harmless treatment of waste, thereby reducing environmental pollution and improving the efficiency of resource use. A "Waste-Free Hospital" includes aspects such as the hospital environment, domestic waste, medical management, and wastewater treatment. Suzhou Environmental Technology Co., Ltd. focuses on fields such as wastewater treatment and restroom management, and is committed to continuously bringing cutting-edge environmental protection technology and customized solutions to medical institutions, and continues to support the construction of "Waste-Free Hospitals."