1. Product Introduction of Shuitianlan Submerged Ultraviolet Sterilizer

This equipment is a low‑flow ultraviolet disinfection unit. Equipped with world‑leading high‑intensity odour‑free UV germicidal lamps and a cylinder with specially‑treated food‑grade 304‑stainless‑steel inner wall, it ensures pre‑treated water passing through the cylinder receives adequate irradiation by 253.7 nm ultraviolet rays for excellent germicidal performance. Since it does not alter water’s physical or chemical properties, it serves as an ideal indispensable device for drinking‑water, food, beverage, chemical, electronic, pharmaceutical, sewage and reclaimed‑water applications.

The unit is of horizontal configuration. It delivers fast, efficient and thorough disinfection. After 10‑second irradiation complying with water‑treatment requirements, bacteria and viruses in water can be eliminated with a germicidal rate of 99.99 %. Water after UV irradiation retains its original physical and chemical indices with no secondary contamination. It features simple operation and convenient maintenance. Standard models for different flow rates are available. Users only need to replace UV lamps and clean quartz sleeves periodically.

Boasting compact size, light weight, low power consumption, long service life and low overall cost, the equipment shows prominent advantages compared with other sterilization methods and therefore enjoys wide‑ranging application.

Main components: UV lamp, quartz tube, ballast, sealing fittings, tank body, water inlet and water outlet.

2. Working Principle of Shuitianlan Submerged Ultraviolet Sterilizer

Based on biological effects, ultraviolet radiation is classified into UV‑A (320‑400 nm), UV‑B (275‑320 nm), UV‑C (200‑275 nm) and vacuum ultraviolet bands. Water disinfection mainly utilises the UV‑C band; maximum germicidal efficiency occurs near 260 nm.

Shuitianlan ultraviolet sterilizer integrates optics, microbiology, mechanical engineering, chemistry, electronics and fluid mechanics. Its specially‑designed high‑efficiency, high‑intensity and long‑life UV‑C generator produces strong UV‑C rays to irradiate flowing water. When bacteria, viruses and other pathogens in water are exposed to a sufficient dose of 253.7 nm UV‑C radiation, their cellular DNA and structures are damaged, disabling cell reproduction and achieving water disinfection and purification. In addition, the 185 nm spectral line can decompose organic molecules in water, generate hydroxyl free radicals and oxidise organics into carbon dioxide for TOC reduction.

3. Advantages of Shuitianlan Submerged Ultraviolet Sterilizer

1. High‑efficiency disinfection: A germicidal rate of 99 %‑99.9 % against bacteria and viruses can be achieved within 1‑2 seconds.

2. Broad‑spectrum disinfection: Ultraviolet disinfection offers one of the broadest spectrums, efficiently killing nearly all types of bacteria and viruses.

3. No secondary pollution: No chemical agents are dosed. It introduces no secondary pollution to water or the surrounding environment and leaves water composition unchanged.

4. Safe and reliable operation: Conventional disinfection technologies such as chlorination or ozone rely on toxic, flammable disinfectants. UV disinfection systems avoid such safety hazards.

5. Low capital and operating‑maintenance costs: UV disinfection equipment occupies small footprint with simple civil‑work requirements, resulting in low initial investment. Its operating cost is also low: for a 1 000‑ton‑per‑day water‑treatment scale, operating costs are only half those of chlorine disinfection.

4. Equipment Characteristics of Shuitianlan Submerged Ultraviolet Sterilizer

1. High‑efficiency UV‑C (LL or LH) ultraviolet lamps: World‑leading low‑pressure high‑intensity UV lamps with guaranteed service life of 8 000‑10 000 hours or longer.

2. High‑purity quartz sleeves with high UV transmittance of over 90 %.

3. Advanced dedicated constant‑intensity ultraviolet ballasts for stable system performance under complex working conditions.

4. High‑quality stainless‑steel reactor (304 or 316 grade). The reactor inner wall receives special polishing treatment to enhance germicidal performance.

5. Optimal Operating Conditions

6. Application Scope

‑ Disinfection of process water for food, beverage, beer, edible‑oil, canned goods and cold‑drink production ‑ Ultrapure‑water treatment for the electronics industry; water‑supply systems for military camps and field sites ‑ Water disinfection for hospitals and laboratories; disinfection of wastewater with high pathogen loads ‑ Potable‑water disinfection for residential buildings, communities, office buildings, hotels, restaurants and waterworks ‑ Purification and disinfection for aquatic‑product processing, shellfish purification and fish‑processing facilities ‑ Municipal sewage disinfection ‑ Disinfection for swimming pools and other recreational water bodies ‑ Disinfection for thermal‑power plant cooling water, industrial process cooling water and central‑air‑conditioning cooling‑loop water ‑ Process‑water disinfection for biochemistry‑pharmacy and cosmetic manufacturing ‑ Seawater and freshwater aquaculture and hatchery water (maximum daily throughput up to 200 000 tons) ‑ Disinfection for agricultural water, greenhouse water and irrigation water