Product Details

Secondary water supply disinfection uses UV/TiO₂ advanced oxidation (AOT) equipment—specifically designed for secondary water systems, operating at 4~70℃. It works by special UV lamps irradiating nano-titanium dioxide coatings to generate hydroxyl radicals, which thoroughly decompose bacteria, viruses, organic microorganisms (especially stubborn colonies like Legionella).

This AOT technology is co-developed by Hebei Guanyu Environmental Protection Equipment Co., Ltd., the Ecological Environment Research Center of the Chinese Academy of Sciences, and Hebei University of Science and Technology.

Product Features

Fewer lamps are required and the electro-optical efficiency is high

It has the advantages of both low-pressure and medium-pressure lamps, and can provide cost and maintenance advantages with high cost performance.

Compact footprint

The optimized reactor design and modular lamp group can be installed in a very small space, thus achieving good economic benefits.

High-efficiency nano-titanium dioxide coating

The special coating structure design and production formula make the photocatalytic efficiency higher, and the coating has strong bonding with the substrate, strong anti-fouling ability and longer service life.

Advanced control system

An intelligent and flexible control system optimizes power consumption while ensuring that the UV dose and target pollutant treatment meet the treatment requirements.

System performance can be demonstrated using key control points

The control system monitors and provides trend lines and outputs data for all regulatory requirements including UV dose and pollutant reduction.

AOT equipment disinfection principle

The first step is to generate hydroxyl radicals

The AOT equipment adopts photocatalytic advanced oxidation technology, using a specific UV light source to excite the photocatalyst to produce hydroxyl radicals with extremely strong oxidizing properties.

The second step is to completely oxidize and decompose into CO2 and H2O

Hydroxy radicals directly destroy cell membranes, quickly destroy cell tissues, and quickly decompose bacteria, viruses, microorganisms, organic matter, etc. in water into CO2 and H2O, so that microbial cells lose the ability to revive and reproduce, thereby achieving the purpose of completely decomposing bacteria, viruses, microorganisms, organic matter, etc. in water.

Product Advantages

Mature TiO₂ coating technology

Co-developed with CAS, patented. Core coating resists peeling, produces more radicals for thorough disinfection.

Small-diameter, multi-channel design

Addresses radicals’ short lifespan (seconds) and limited movement (cm); increases UV-catalyst contact to boost radical production.

Compact skid-mounted structure

Easy on-site installation (pipe/electrical connections only); integral base for mobility, small footprint, high space efficiency.

Technical Parameters

Product model	Processed water volume m³/H	Diameter	Total power	Single power	Number of lamps
GY-AOT-5-DN25	1-5	DN25	130W	65W	2 sticks
GY-AOT-10-DN40	6-10	DN40	195W	65W	3 sticks
GY-AOT-15-DN50	6-15	DN50	260W	65W	4 sticks
GY-AOT-20-DN80	16-20	DN80	344W	172W	2 sticks
GY-AOT-30-DN100	21-30	DN100	516W	172W	3 sticks
GY-AOT-40-DN100	31-40	DN100	621W	207W	3 sticks
GY-AOT-50-DN150	40-50	DN150	688W	172W	4 sticks
GY-AOT-60-DN150	50-60	DN150	828W	207W	4 sticks
GY-AOT-80-DN150	60-80	DN150	1035W	207W	5 sticks
GY-AOT-100-DN150	80-100	DN150	1242W	207W	6 sticks
GY-AOT-120-DN150	100-120	DN150	1449W	207W	7 sticks
GY-AOT-150-DN200	120-150	DN200	1656W	207W	8 sticks
GY-AOT-200-DN200	150-200	DN200	2070W	207W	10 sticks
GY-AOT-250-DN200	200-250	DN200	2484W	207W	12 sticks
GY-AOT-300-DN250	250-300	DN250	2898W	207W	14 sticks

Model	GY-AOT
Water treatment volume	1-300m³/h
Power	130-2898W
Material	Stainless steel 304/316
Diameter	DN25-250
Tubes	2-14 pieces
Application areas	Secondary water supply