28.04.2016
The City of Wyoming has requested that the Calvin Senior Design team perform an in-depth, preliminary design for a UV-disinfection system complete with advanced oxidation. Disinfection rids wastewater of pathogens and microorganisms by chemical or radiation processes, in which the disinfectant is added, mixed, and allowed time to react. Advanced oxidation processes are emerging and innovative water treatment processes shown to eliminate elusive compounds of concern often ignored because of low concentrations and low chemical and biological degradability. Reaeration is used to increase the dissolved oxygen (DO) concentration of the wastewater after the water undergoes disinfection by UV rays or chemicals. If the ozone advanced oxidation process is implemented in the future, additional reaeration will likely not be needed, as the degradation of ozone will provide enough oxygen content. A low pressure, high intensity ultraviolet disinfection system has been selected for the plant for use in a closed vessel. The disinfecting effect of ultraviolet rays has been known since 1878, when sunlight’s bacterial effect was discovered.
Organisms in water require a minimum ultraviolet light dose before the organism inactivate. What is the difference between water and wastewater disinfection with chlorine versus ultraviolet (UV) light? Where chlorination utilizes a chemical reaction to destroy, or burn away the genetic material of organisms, UV utilizes the rays from special mercury vapor lamps as catalyst to replicate the natural photosynthesis process. How are Enaqua’s ultraviolet (UV) disinfection systems for water and wastewater disinfection different from alternative UV offerings in the market? WHAT IS THE CALCULATED OPERATIONAL ENERGY CONSUMPTION OF ENAQUA’S NON-CONTACT UV SYSTEM? Enaqua’s UV disinfection systems are designed so that no level controls and weirs are needed to maintain effluent water level – in other words we can utilize free discharge minimizing plant hydraulic design issues.
In typical Contact UV systems, if a lamp or quartz sleeve were to break they would enter the water stream.
Many governmental regulations have been established in recent years for the protection of the environment.
UV and Ozone DisinfectionFeatured CopyA premier manufacturer of ultraviolet (UV) disinfection and ozone (O2) oxidation systems, and related monitoring and control systems, for the disinfection of municipal and industrial water and wastewater. The application of UVGI to disinfection has been an accepted practice since the mid-20th century. A portable, battery powered low pressure mercury vapor discharge lamp for water sterilization. Your use of this website constitutes acknowledgement and acceptance of our Terms & Conditions. We apply the energy of “ultraviolet light” for purification of contaminated process solutions, degradation of pollutants in wastewater, waste gas, disinfection of aqueous solutions and to realize selective organic synthesis. For these applications we build robust UV-reactors and complete systems that are redefining today’s industrial standard. Photo is showing disinfection of three step cascade rinse after TSAA-process with a chemical free and safe sanitation of rinses and recycling water. Suitable online analytics perfectly integrated into the UV oxidation along with further elements such as the TOC analyzer, flow monitoring, etc. Our customers can focus on their prior business, we just do preventive maintenance on our UV-plants, as all the rest is taken care of by instrumentation and our online support. Since 2013 Enviolet can offer an Rreactor for photochemical synthesis with ATEX - approval. 11 years long the worldwide biggest plant for antibiotics (Asia) looked for a solution for their waste water. The waste water entering the UV-installation is black like coffee and has an average COD of ca.
This plant reduces the daily amount of antibiotics into the aquatic environment by 4.800 kg.
We are able to design AOP and UV-installations in very restricted spaces and install oxidation-equipment in containers, while respecting the safety rules. Many years of experience in the construction and manufacturing ensures that no compromises are made on the functionality and the long service life of suplied units. Technologie UltraVioletteNos reacteurs d’oxydation redefinissent l’etat de la technique, parce qu’ils sont enfermes dans des tuyaux en verre de borosilicate, un materiau qui non seulement previent la corrosion, mais qui permet aussi de regarder a l’interieur du reacteur. Notre systeme de regulation de puissance RECO permet de reguler l’irradiation avec une carte a puce. Sterilisation de reservoirEnviolet est le seul producteur d’installations a lumiere ultraviolette a fournir egalement des systemes intelligents pour la sterilisation de cuves. Des installations pretes a l’emploiSur la base de notre experience, nous fournissons des installations pretes a l’emploi de toutes les dimensions.


Recherche et developpement Notre division R&D travaille sans cesse a perfectionner les processus et produits existants, ainsi qu’a developper des solutions nouvelles.
En faisant des tests sur vos echantillons dans des reacteurs a echelle reduite, nous pouvons vous assurer des resultats optimaux avec l’installation a grande echelle. Infralight'smanufactures replacement uv  lamps to municipal wastewater treatment plants, water recyclers, food processes, beverage plants at competitive market prices. Infralight is able to offer end users and equipment manufacturers, high quality replacement ultraviolet lamps at prices well below prices they are currently paying from original suppliers. IntroductionPost-treatment is not always necessary and a pragmatic approach is recommended. Reaeration and plant hydraulics are additional aspects of the project the team will consider. UV disinfection is an alternative to conventional chemical disinfectants used in the wastewater treatment process. Compounds targeted for removal include both pharmaceuticals and personal care products (PPcPs) (Huber et al.
It is necessary to raise DO levels to an extent that the wastewater is biologically stable and meets effluent requirements.
The team proposing converting an unused settled sludge pumping station to a new pumping station for the additions to the plant. UV disinfection provides cost effective, chemical-free, tertiary treatment that reduces disinfection by-products. We can design with or without free discharge in regards to what provides our customers with the best solution. However, Enaqua’s Non-Contact UV systems are designed such that there is no possibility of glass or mercury entering the water stream. The Clean Water Act and the Resource Conservation and Recovery Act are among the most significant.
UVGI utilises short-wavelength ultraviolet radiation (UV-C) that is harmful to microorganisms. Coupled with afiltration system, UVGI can remove harmful micro-organisms from these environments. In-situ-UV-disinfection is completely designed in accordance to process-chemicals, drag-out, and dimensions of rinses; special properties warant continuous production and safe operation of the system.
This reactor is approved as well for the operation with pure solvents as also for operation inside ATEX-areas.Each seal can be provided with a liquid medium for sealing at elevated pressure.
Il garantit un rendement optimal tout en prolongeant la duree de vie des lampes ultraviolettes a haute performance.
Les systemes Microfloat® et Microspear® peuvent etre adaptes a des conteneurs de presque toutes les dimensions et geometries concevables, ainsi qu’a tous les debits.
Des premieres ebauches a la mise en operation, nous avons des solutions sur mesure pour tous vos besoins en matiere d’oxydation a la lumiere ultraviolette. Infralight has introduced a level of competition that makes ultraviolet disinfection and uv sterilization an attractive and viable alternative to other forms of water treatment. The effluent quality should match the intended end-use practice or the quality of the receiving water body. However, the tricky part is often the question on how do I plan and proceed in implementing those solutions? UV disinfection consists of ultra-violet radiation in the form of wavelengths (Ho et al, 1998). A cascade aeration system will be used in the older chlorine disinfection contact tank because of its ease of use, and relative ease of maintenance, and low cost.
This pumping house would provide enough head so that the wastewater can flow through the entire plant.
All testing and experimentation took place in the environmental engineering laboratory located inside the Science Building at Calvin College.
Ultraviolet (UV) energy has the unique ability to destroy harmful microorganisms by disrupting their genetic information (DNA), rendering them unable to reproduce. Today, UV is applied in more than 20% of all municipal wastewater treatment and the number is steadily increasing. This fully natural treatment process is increasingly gaining foothold in the municipal wastewater market and thousands of municipalities have converted from chlorine to UV light for disinfection over the last decade. Compared to the submerged lamps in Contact UV systems, where the lamps temperature cannot be controlled and heat is released directly in the water, Enaqua’s Non-Contact UV systems can benefit from temperature control of the lamps. For example; the power for the compressor to operate the wipers in the sleeves or air conditioners for cooling of ballasts is usually not included in competitive power calculations, despite the fact that it is required for the proper operation and maintenance of a UV system. In Enaqua’s systems any broken glass of the lamp fall into the bottom of the stainless steel chamber and is never in contact with the water.


Infralight's pricing enables local government councils, municipal waste water treatment plant operators to maintain respectable capital expenditure on water treatment consumables.
The UV rays are absorbed by pathogens within the wastewater, inhibiting replication and inactivating the microorganisms. The CWP is considering coupling UV-disinfection with advanced oxidation to ensure water quality and meet stricter regulations imposed by Michigan Department of Environmental Quality (MDEQ) and the Environmental Protection Agency (EPA). Water samples collected from bench-scale testing experiments were analyzed at Calvin College using high-pressure liquid chromatography (HPLC). We also completed some advanced oxidation bench-scale testing, better understanding the effects of ozone on emerging contaminants. The nature of UV light, makes it the most efficient, economical and environmentally safe method of water and wastewater disinfection among all current offerings in the market.
Infralight Technology specialises in supplying ultraviolet uv replacement lamps for all wastewater treatment systems, water recycling systems, water purification systems and sewage treatment plants throughout the world. Advantages of UV disinfection include no chemical transportation or safety concerns and minimal worry about disinfection by-products.
Germicidal uv lamps, low pressure mercury discharge lamps commonly used for tertiary treatment wastewater treatment systems are used where a high degree of purification, disinfection and sterilisation is required. Chlorine should not be used if the water contains significant amounts of organic matter, as disinfection by-products can form. In describes all possible reuse application of water, technical issues in planning water reuse systems, legal and institutional issues, funding of water reuse systems, public involvement programs, guidelines in the U.S. The team will evaluate and provide a preliminary design for a UV disinfection treatment system suited for the future demands on the City of Wyoming’s Clean Water Plant.
STP and WWTP operate multi-lamp ultraviolet systems using high output low-pressure (LPHO) uv lamps, amalgam high output uv lamps and medium pressure (MP) uv lamps. A low pressure, high intensity UV lamp system in a closed pipe has been selected for use on site. Activated carbon adsorbers not only remove a variety of organic and inorganic compounds, they also eliminate taste and odour. Fountain Valley (US): National Water Research Institute (NWRI) and Water Research Foundation (WRF). Low pressure membrane filtration processes (including gravity-driven membrane filters) are being developed. Depth filtration is successfully used to remove protozoan cysts and oocysts, while ultrafiltration membranes can also reliably eliminate bacteria and viruses.DisinfectionThe destruction, inactivation, or removal of pathogenic microorganisms can be achieved by chemical, physical, or biological means. Due to its low cost, high availability and easy operation, chlorine has historically been the disinfectant of choice for treating wastewater.Chlorine contact tanks. Source: Conrad Strehlau (2010)Chlorine oxidizes organic matter, including microorganisms and pathogens (see also drinking water chlorination). Concerns about harmful disinfection by-products (DBP) and chemical safety, however, have increasingly led to chlorination being replaced by alternative disinfection systems, such as (UV) radiation and ozonation (O3). UV radiation is found in sunlight and kills viruses and bacteria (see also drinking water UV disinfection or SODIS).Thus, disinfection naturally takes place in shallow ponds (see also waste stabilisation ponds). It promotes a context-specific approach to technology selection by guiding the user to select the most suitable technologies for their area.
UV radiation can also be generated through special lamps, which can be installed in a channel or pipe.UV disinfection tank. It provides tools and field guides for source characterization and site evaluation, as well as technology identification and selection. Similar to chlorine, the formation of unwanted by-products is one of the problems associated with the use of ozone as a disinfectant. Frequent cleaning (backwashing) or replacement of the filter material is, therefore, required.
For chlorination, trained personnel are required to determine the right dosage of chlorine and ensure proper mixing. Ozone must be generated onsite because it is chemically unstable and rapidly decomposes to oxygen. Duebendorf, Switzerland: Swiss Federal Institute of Aquatic Science and Technology (Eawag).




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