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Municipal Wastewater

Application of Ultraviolet Disinfection Technology in Municipal Wastewater Treatment

Disinfection is the final, essential process in municipal wastewater treatment plants. It effectively kills pathogenic microorganisms (such as bacteria, viruses, and parasites) in wastewater, preventing the spread of disease, avoiding contamination of natural water bodies and soil, and safeguarding public health and ecological safety. It is an indispensable step in the wastewater treatment process. By the time wastewater enters the disinfection process, most organic matter and suspended solids have been removed, creating excellent water quality conditions for UV disinfection. UV disinfection processes have low investment and operating costs per unit of water volume, and UV disinfection ensures that the final discharged wastewater meets the various microbiological requirements of the receiving water.

There are two main types of UV disinfection systems used in municipal wastewater treatment plants:

Open-channel UV systems feature UV lamp modules installed horizontally or vertically in an open concrete channel, irradiating wastewater as it flows through the channel. Open-channel UV disinfection systems are the most commonly used disinfection method in wastewater treatment plants and are relatively easy to install and maintain.

Closed-Vessel UV System: This system places UV lamps inside a closed reactor (usually a stainless steel cylinder), through which wastewater flows under pressure for disinfection. Its advantages include a small footprint and the ability to operate under pressure. It is suitable for applications with relatively small treatment volumes, MBR process effluent, and underground wastewater treatment plants.

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WSH UV Disinfection System

The ONYX-WSHI product is designed for channel installation and features a co-current lamp design with the water flow. It incorporates innovative technologies, including ballast water cooling, online mechanical cleaning, adjustable UV output intensity, and CFD flow simulation, significantly simplifying operation and maintenance.

The ONYX-WSHI complies with GB/T19837-2019, "Urban Water Supply and Drainage Ultraviolet Disinfection Equipment," and has passed microbial testing to verify that the UV dose meets the requirements for inactivating E. coli and fecal coliforms.

The Class A UV dose is >20mj/cm2, and the recycled water UV dose is >80mj/cm2.

WTV UV Disinfection Vertical System

The ONYX-WTV is designed for channel installation, featuring a lamp design perpendicular to the water flow. It incorporates innovative technologies, including online mechanical cleaning, adjustable UV output intensity, and CFD flow simulation, to reduce costs and significantly simplify operation and maintenance.

The ONYX-WTV complies with GB/T19837-2019, and has been verified through microbiological testing to demonstrate that the UV dose meets the requirements for inactivating E. coli and fecal coliforms.

The Class A UV dose is >20mj/cm2, and the UV dose for reclaimed water is >80mj/cm2.

ZL UV Disinfection System

The ONYX-ZL-SZ series features a pipeline design with polished interior and exterior surfaces. It utilizes UV reflection from the reactor's inner walls to enhance UV intensity. UV radiation kills bacteria and viruses in the water as it flows through it. The system's fully enclosed and compact design ensures effective disinfection.

The ONYX-ZL-SZ incorporates innovative technologies, including automated mechanical cleaning and CFD flow simulation, to reduce costs and significantly simplify operation and maintenance.

Clear Medium Pressure UV Disinfection System

The ONYX-Clear-SZ in-line medium-pressure UV sterilizer utilizes medium-pressure multi-spectral UV lamps to not only destroy DNA/RNA but also intracellular enzymes and proteins, resulting in more thorough sterilization. It is designed to disinfect and degrade toxic micropollutants in water, including NDMA, 1,4-dioxane, endocrine disruptors (EDCs), pesticide residues, cyanobacterial toxins, GSM (geosmin), and 2-MIB (dimethylisoborneol).

In addition, combining oxidants such as O? and H?O? with UV light, such as UV-O? and UV-H?O? processes, can be used to oxidatively remove recalcitrant substances and organic matter, such as CC14 and polyaminobiphenyls, from wastewater.

MOL Ceramic Plate CD Ozone Generator

The ONYX-MOL plate-type ozone generator features a modular design that allows for block-type assembly based on gas production capacity, resulting in a compact structure.

Utilizing high-purity aluminum-based ceramic electrodes and a highly resistant micro-arc oxidation process, the system delivers stable and reliable performance with an ultra-low attenuation rate. Uniform micro-gap high-frequency discharge delivers energy savings of 20-35%. The ozone concentration is adjustable from 0 to 240 mg/L, saving up to 40% oxygen.

The power-on auto-start design eliminates the need for manual intervention. It features self-diagnosis during operation, error handling, and intelligent recovery. Edge computing and cloud service coordination are integrated for operational status.

Municipal Municipal Wastewater Municipal water supply Recycled Water Reuse Township water supply and drainage Industrial Park New pollutant control Water ecological restoration project

Industry Pretreatment of industrial high-difficulty wastewater Pesticide Industry API pharmaceuticals Chemical waste salt purification Food & Beverage Industry Pharmaceutical Purified water Chip Fabrication Oilfield reinjection water Industrial zero emissions

Commercial Secondary water supply Pool & Aquarium High-quality drinking water POE/POU Aquaculture Cooling Circulating water Laboratory applications

UV-AOPs Wastewater Biodegradability Pretreatment of highly toxic industrial wastewater Chemical active agents Cyanide Organic Complexes

Craftsmanship UV disinfection UV photolysis UV Advanced Oxidation Reverse Osmosis Alternative to pasteurization UV photochemical reaction Ozone oxidation

Resource Recycling waste plastics Construction waste Renovation waste

Municipal WSH UV Disinfection System WTV UV Disinfection Vertical System ZL UV Disinfection System Clear Medium Pressure UV Disinfection System MOL Ceramic Plate CD Ozone Generator UV-AOP Advanced Oxidation System D.FITE Cloth Filter

Industry ZL UV Disinfection System Clear Medium Pressure UV Disinfection System UV-AOP Advanced Oxidation Extrem Medium Pressure UV Disinfection System EX-U UV Sterilizer EX-UPW-TOC UV TOC System MOM Ceramic Plate CD Ozone Generator MOS Ceramic Plate CD Ozone Generator UV-Fenton UV-Oxidation

Commercial EX-L UV Sterilizer EX-U UV Sterilizer ZL UV Disinfection System CLEAR Medium pressure UV Disinfection System OneUV UV Sterilizer Extrem Medium pressure UV Disinfection System UV-AOP Advanced Oxidation MOS Ceramic Plate CD Ozone Generator COG Ceramic Plate CD Ozone Generator

Photochemistry UV-Fenton Medium-pressure UV-Oxidation UV Photolysis Pasteurization UV Alternatives UV Photocatalysis Low Pressure UV-Oxidation

Resource Recycling AI Optical Sorter Al high-speed sorting robot AI heavy-duty sorting robot

Others SATBR Integrated Wastewater Treatment System D.FITE Cloth Filter Modular Wastewater Treatment System ModuOzone Ceramic Plate CD Ozone Generator

After-Sales Services Spare parts replacement Product Repair System Support Renovation Regular maintenance Software Upgrade

Technical Support Process Support Product Training Research & Development Small Test Pilotscale experiment Online dose monitoring UV dose design

Channel Services Municipal Industry Business OEM

Spare parts Low Pressure lamps Low Pressure Amalgam Lamps Medium Pressure Mercury Lamp VUV Low-pressure Mercury Lamp（185nm） Quartz sleeve Ballasts UV Intensity Sensor UV transmittance tester Sealing accessories Other Spare parts replacement

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