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Application Guide10 min read

Selecting Atlantium HOD UV Systems for Process Water

Atlantium HOD UV for process water: the flows printed in the documents retrieved are not ratings, so fit rests on dose at the site's UVT and flow, tested against the RZ104 certificate's windows.

A buyer asks of an Atlantium HOD UV unit: what flow does it handle? For the RZ104, the 2020 datasheet answers "Application dependent" and asks the user to provide a flow signal.[15] The flows met elsewhere are not ratings: NSF/ANSI/CAN 61 certified minimum flows,[3] windows on one certificate,[8] connection sizes and case-study service flows. What decides fit is the dose delivered at the buyer's UVT, flow range and lamp power, which no document retrieved ties to a named model at a stated UVT, flow and lamp power.

This guide is a procedure from measurement to a valid quote, ending in one of three answers: (1) an RZ104-11 inside its certificate's windows, with the delivered dose still owed by a model-specific sizing from Atlantium; (2) a larger tier with no window retrieved, needing its own validation letter; or (3) not this quote. An illustrative run of 16 and 12 m3/h at UVT 90% fires no stop [ASSUMPTION: activated carbon upstream removes the chlorine and the UV takes no dechlorination credit; invalid for chloramine without confirmed carbon performance]. Scope is the inline pressurised series. The mechanics article covers the chamber and the evidence, and a reference design works one RZ104-11 line.

Measure UVT and flow before reading any figure

UV acts on the organisms its dose reaches and leaves no residual; the FAQ notes that regulations in many regions often require a chlorine residual in distribution networks.[7] It is not a particle measure: the FAQ calls UVT and turbidity rarely correlated.[7] Atlantium puts the dose for chlorine at "hundreds of mJ/cm² versus tens for microbes".[7] No chlorine-removal dose, rate or residual is printed for any model in the documents retrieved, so a chlorine duty is a separate sizing question and a stop below.

Read symptoms as trends. Counts rising after a carbon stage (compare before and after, across seasons) point at the carbon bed (this guide's reasoning): Atlantium's brewery brochure calls carbon a breeding ground for bacteria and puts UV immediately after the carbon filter,[10] and its white paper, in its own risk-and-remediation section, says the position after the carbon tower carries the tower's microbial load.[19] Counts rising only downstream of the UV point at regrowth, since UV leaves no residual (this guide's reasoning). A continuous feed puts UVT and minimum flow first; recirculation puts temperature first, with lamps on to 60 C[2] and heating a risk;[19] an intermittent duty puts ignitions first, since lamp life depends on working hours and ignitions.[7]

Atlantium's input list adds pathogens, water-quality parameters, application type and a flow diagram to UVT, flow range and dose.[7] Inputs group by what each decides. UVT, pressure, temperature and any chlorine duty eliminate a tier; UVT, flow range and dose size it; supply, connection and space fit it. The rest only Atlantium can supply; none is printed in the documents retrieved.[2][15]

UVT is the percentage of 254 nm light passing through 1 cm of water,[7] not turbidity in NTU. Flow appears as GPM, gpm, m3/h and m3/hr; 1 m3/h is 4.403 GPM. Dose is mJ/cm2 RED tied to an organism.[19] A UVT margin can mislead [ASSUMPTION: UVT 90% after the carbon stage, used only to test the windows; invalid as a measurement of any real water]: 90% is 4.7 points above the certificate's 85.3% adenovirus edge, yet absorbance per cm is 1.51 times higher at 85.3% (0.0691 ÷ 0.0458): in absorbance terms the edge is closer than 4.7 points suggest (this guide's reasoning; no document prints how dose varies with absorbance).

Measure on a spectrophotometer at 254 nm in quartz cuvettes, or send a sealed 100 ml sample to Atlantium's salesperson.[7] Measure after the carbon stage, across seasons and flow states (this guide's reasoning). No regional UVT dataset or dose rule for Singapore, Malaysia or Indonesia was retrieved.

Screen by printed limits, size by dose

Screen tiers on the 2024 brochure. Maximum working pressure is 10 bar (145 psi) for RS104, RZ104 and RZ163; 7 bar (102 psi) for RZ300, RZB300, RZM200 and RZM350; 4 bar for EP900; 2 bar for EP600.[2] The worked UV sits before the RO feed pump, under 10 bar [ASSUMPTION: design layout]. Every inline table prints 60 C lamps on and 90 C lamps off; the 2020 RZ104 datasheet prints 125 C lamps off.[2][15] Housing is 316 or 316L, with super duplex offered on most 2024 tier tables, and 316L in the 2020 RZ104 datasheet; the electricity rows carry a "* Transformer required" note.[2][15] EPA's Table 1.4 (OCR-read) gives 186 mJ/cm2 for 4-log virus in US public water systems, not a beverage rule.[5] Atlantium's white paper, a compilation of beverage-company practices, lists for medium-pressure UV, each per the validation document or a minimum of that figure, for a process with no chlorination step: 100 mJ/cm2 RED after conventional chemical treatment, 120 after in-line flocculation with direct filtration, 100 after micro- or ultrafiltration; 40 is a reduction for a validated unit where chlorine disinfection is included.[19] Its remediation text recommends "HOD UV system on before each RO to provide 120 mJ/cm2 dose or higher"[19] and, for recirculating stored water, triples the RED of at least 40 that its stored-water guidance asks for.[19] PUB Singapore's case study sets a goal of 90 after RO, 60 to 90 in its table.[13] The FAQ's tens for microbes does not say which organisms or standard it covers,[7] and the white paper lists 40 to 120 by process.[19] The run takes 120 [ASSUMPTION: the reference design's choice; invalid if the facility's brand standard or regulator sets another].

The flow numbers printed in the documents retrieved are not ratings. The RZ104 datasheet prints "Application dependent".[15] NSF/ANSI/CAN 61 prints certified minimum flows of 11,520 GPD (8.0 GPM, 1.8 m3/h) for RZ104 and RS104, 17,280 GPD (12 GPM, 2.7 m3/h) for RZ163, and 115,200 GPD (80 GPM, 18.2 m3/h) for RZ300 and RZB300 (GPD ÷ 1,440 gives GPM). The listing does not say what they represent, lists RZM350 without one, omits RZM200, EP600, EP900 and the open-channel series, and is a health-effects standard certified "for use in municipal water treatment plants only".[3] Case-study flows, taken from Atlantium's own case studies and news briefs, are service points: Coca-Cola Philippines' RZ163-11 at "250 gpm flow rate" (56.8 m3/h);[11] a wipes producer's RZ104-11 at a "maximum flow rate of 20 m3/h";[14] and PUB Singapore's Kranji NEWater plant at 474 m3/hr per duty unit, 947 m3/hr in the table and 1240 in the text, unreconciled.[13]

One tier has a validated window, and it is a window, not a limit. The RZ104 certificate, undated and hosted by Atlantium, calls its adenovirus validation "restricted to flow rates between 44 GPM to 248 GPM, UV Transmittance Values 85.3% and higher, and power levels between 40% and 100%",[8] or 10.0 to 56.3 m3/h, on an RZ104 reactor whose model it does not give. The LT2 window for the RZ104-11 is 10 to 605 GPM (2.3 to 137.4 m3/h) at UVT 77.9% to 97.3%.[8] No window was retrieved for the other eight inline tiers, so a quote must bring its own letter. A window is not a minimum UVT. Atlantium's 2020 briefs say "accredited validation for 4-log virus and 5-log microbial inactivation"[16][17][18] with no certificate named for the 5-log figure; any log figure above 4 needs a named document.

Screening order for an Atlantium HOD UV quoteFour steps read left to right: measure after the carbon stage, screen by printed limits, test the RZ104 certificate windows, then choose a position and read the quote. The last step leads to one of three answers: an RZ104-11 inside its windows with the delivered dose still owed by a model-specific sizing, a larger tier needing its own validation letter, or not this quote. A dashed box lists the five stop conditions, each a stop or a reason to ask Atlantium first: UVT under 85.3% and flow outside 10.0 to 56.3 m3/h (both the adenovirus line), UV expected to remove chlorine, water over 60 C with lamps on, and an NSF/ANSI 55 requirement, where the next step is to ask Atlantium.HeadingThe order this guide followsMeasure, screen, test the one published window, then one of three answersStep 1 — Measure after the carbon stage: UVT, flow range, dose and organism, chlorine dutyMeasure afterthe carbon stageUVT, flow range,dose and organism,chlorine dutyStep 2 — Screen by printed limits: tier pressure maximum, water at 60 C with lamps onScreen byprinted limitstier pressure maximum;water 60 C, lamps onStep 3 — Test the RZ104 certificate windows: adenovirus line, UVT 85.3% and higher, flow 10.0 to 56.3 m3/hTest the RZ104certificate windowsadenovirus line:UVT 85.3% and higher;flow 10.0 to 56.3 m3/hStep 4 — Choose a position, then read the quote: ask for dose, organism, lamp power and the letter's fieldsChoose a position,read the quoteask for dose, organism,lamp power and theletter's fieldsArrows between the four stepsBranch from step 4 to the three answersAnswer 1 — an RZ104-11 inside its certificate's windows; delivered dose still owed by a model-specific sizingRZ104-11 inside itscertificate's windowsdelivered dose still owed bya model-specific sizingAnswer 2 — a larger tier: no window retrieved, needs its own validation letterA larger tierno window retrieved;needs its own validation letterAnswer 3 — not this quoteNot this quoteStop conditions — any one is a stop or a reason to ask Atlantium firstSTOP, OR ASK ATLANTIUM FIRSTUVT under 85.3% (adenovirus line)Flow outside 10.0 to 56.3 m3/h (adenovirus)UV expected to remove chlorineWater over 60 C, lamps onNSF/ANSI 55 requirement: ask Atlantium
Open full-size diagramThe order this guide follows: measure, screen by printed limits, test the one published window, choose a position, then read the quote. It shows where the guide stops a quote; it is not a rating or a sizing, and no document retrieved ties a delivered dose to any model at a stated UVT, flow and lamp power. Each stop has a next step in the text; a certificate window is where one certificate applies, not an operating limit.

The worked run is illustrative, not a rating [ASSUMPTION: RO feed of 16 m3/h full and 12 m3/h reduced rate, one RZ104-11 per branch (1 lamp, 1 kW[15]), at the 90% UVT and 120 mJ/cm2 above; invalid as a recommended duty] [ASSUMPTION: the adenovirus line, printed for the RZ104 model reactor with no model named, is read as covering the RZ104-11; valid until Atlantium names the model, invalid if only the RZ104-12 was tested]. 16 m3/h is 70.4 GPM (16 × 4.403), (248 - 70.4) ÷ 248 = 71.6% below the adenovirus top. 12 m3/h is 52.8 GPM, 1.20 times the 44 GPM floor, a headroom of (52.8 - 44) ÷ 52.8 = 16.7% of the 12 m3/h duty: the tighter edge, which a turned-down RO train could cross. Both sit inside the LT2 window, and 90% is 12.1 UVT points above 77.9%. The run ends with the flows inside the windows, not with a sized unit: whether one lamp holds 120 mJ/cm2 without lamp power pinned at 100% is a delivered dose that no document retrieved ties to a named model at a stated UVT, flow and lamp power. No derating curve for UVT, lamp age or fouling, and no turndown ratio, appears in the brochure, datasheet, certificate, FAQ or technology page.[2][15][8][7][1] Atlantium's technology page says the system adjusts lamp power to deliver the minimum dose set by the user, which it calls "guaranteed", and, in the same paragraph, that lamp power can vary between 25 and 100%; it does not say which model that describes.[1] The certificate's window is 40% to 100%,[8] so the quote must say whether the setpoint keeps lamp power inside it. A lower UVT or an older lamp spends lamp-power headroom, and a unit at 100% has none left (this guide's reasoning).

Choose a position, then read the quote

Each position has an advantage and a blind spot [ASSUMPTION: this guide's option set; Atlantium prints no tie-in rule in the documents retrieved]. The brewery brochure places UV immediately after the carbon filter;[10] the white paper places it before each RO and describes that location as post GAC;[19] the technology page lists post-granular activated carbon treatment and RO protection as separate applications.[1] Between the carbon stage and the RO, UV meets the carbon bed's load and leaves no residual downstream of the RO (this guide's reading). After the RO, Atlantium's Singapore case study describes three RZ Series systems, two duty and one standby;[13] that protects product water, not the RO membranes upstream (this guide's reasoning). A firewall UV ahead of the line, as the India bottler's case study describes, guards against a source event (this guide's reading), but the case study reports no measured result, only that production will commence shortly.[12] Recirculating stored water protects the tank; heat is its blind spot against 60 C lamps on.[19][2]

Interface and upset items are quote items, each with a named party. The flow signal is the user's to provide.[15] The FAQ wants a reliable meter reading with no diversion between meter and UV,[7] so duty plus standby needs a meter per branch (this guide's reading). Atlantium does not install;[7] piping is the installer's, and wiring and any pump interlock the facility's to settle (this guide's reading; none is assigned in the documents retrieved). The Singapore table is a maker precedent for duty plus standby, with no design rule; a standby covers a unit out of service, not a bad feed.[13] The brochure says lamp replacement needs no emptying of the lines or depressurisation,[2] yet a single-lamp RZ104-11 still raises the question of what the water receives meanwhile; ask that, and for head loss, restart time and the ICD drawing: "All dimensions and weights for reference only; ICD drawing should be used for design purposes."[2]

Decode the flow in every quote. A flow or capacity can be a certificate window, an NSF minimum, a service point or a connection size; none is the flow at which the unit delivers a stated dose, and Atlantium itself says "The UV Dose depends on three parameters: UVT, flow rate, lamp power."[9] Ask for the figure's UVT, dose, organism and lamp power, and for the validation letter's fields as the white paper lists them: conditions, protocol, approach, organism, log inactivation or RED, and the UVT and flow envelope.[19] Treat "Validated to regulatory standards"[6] as the maker's words, not adopted.

Lifecycle declarations carry no price. Atlantium lists "extra lamps, O-rings, connectors, and RO sleeves"[7] as consumables and a warranty of one year after installation or 18 months after shipment, whichever comes first (terms not retrieved).[7] The FAQ gives spare-part delivery of 24 to 72 hours for regions other than North America, subject to third-party shipping delays, and recommends storing essential consumables on site; it names no lead time for Singapore, Malaysia or Indonesia specifically.[7]

Who sets the dose is a quote line: Atlantium's technology page says the minimum dose is set by the user and also tailored by Atlantium's team, with commissioning by its representative.[1][7] The quote should name who sets it, on what organism and standard, and whose acceptance data closes it.

Keep UVT in the window, or stop quoting

Atlantium says "Commissioning includes system inspection, component checks, calibration, functionality testing, and training."[7] Record a baseline of displayed dose, flow, UVT and lamp power from the controller.[1] A weekly bench UVT on a spectrophotometer against the online reading is this guide's own check; sensor accuracy and calibration interval were not retrieved, so the tolerance is a quote item.

A flat touch-screen controller with a blue screen showing a semicircular green gauge and three panels labelled Power, Flow and UVT, whose values are blurred; the Atlantium name is on the screen and the bezel, and part of a stainless steel reactor body is visible at the right. The gauge needle sits in the green band and a green indicator light is lit below the screen. An overlay reads 'AiO controller' with the subtitle 'UV dose · UVT · flow · lamp output — real-time, SCADA-ready'.
Generated product render from the Purionex catalog, not a photograph of an Atlantium product or of an installation. It shows an illustrated AiO-style controller screen with its values blurred; the gauge needle, green band and indicator lights are the render's, not a reading, and the screen and logos are generated, not an Atlantium screenshot. It shows no measured dose, no sensor accuracy and no calibration interval, none of which the documents retrieved give. The overlay words are the catalog's wording of what the controller displays.

No maintenance interval, inline lamp rated duration or deposit prevention mechanism (DPM) service interval was retrieved. Lamp replacement alerts come from measured dose;[7] the lamp budget is a quote declaration. Re-measure UVT, flows, temperature, pressure, chlorine, chloramine and the dose standard whenever the source, season, duty or upstream stage changes. Staying inside a validated window is not a printed delivered dose at the buyer's flow, UVT and power point (this guide's reading): the certificate prints no dose delivered at any such point, only surrogate tests of 8.7 to 161.0 mJ/cm2.[8] A low plate count after UV is not a dose reading either (see the mechanics article).

Five stop conditions follow; none fires on the worked run (UVT 90%, 16 and 12 m3/h, carbon upstream, supply well below 60 C [ASSUMPTION: no regional temperature source was retrieved; invalid for a heated loop or a recirculation tank]).

  1. Measured UVT under 85.3%: no certificate cover for the 4-log line, and under 77.9% the LT2 window is gone too.[8] Next: ask for the letter's UVT envelope.
  2. Flow below 10.0 or above 56.3 m3/h: the adenovirus window ends.[8] Next: a model-specific letter, or no 4-log claim.
  3. A duty needing UV to remove chlorine: no per-model dose is printed, and Atlantium puts the dose class in the hundreds of mJ/cm2.[7] Next: a separate sizing request, or carbon upstream.
  4. Water over 60 C with lamps on, the printed limit.[2] Next: cool the stream or change position.
  5. A requirement for NSF/ANSI 55 performance certification: Atlantium is absent from the listing page retrieved, a dated snapshot of 21 manufacturers.[4] The standard's scope was not retrieved. Next: ask Atlantium for the listing; one page supports asking, not refusing.

An answerable enquiry sends the UVT trend after carbon by season, flows and the flow signal, dose with organism and standard, temperature, pressure, chlorine, chloramine and pH, the flow diagram, application type and supply. A competent reply names the model and lamp count, the delivered dose with the letter's fields, the RZ104 model behind the adenovirus test, head loss, restart time, lamp-swap behaviour, the ICD drawing and the lamp budget.

AtlantiumIL

Atlantium HOD UV

CEISO 9001:2015NSF Certificate
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Send this data pack with the quote request; the items above are the questions to put to whichever supplier answers.

Sources

  1. [1]Atlantium - Technology and Applications page, retrieved 2026-10-01 (26-item application list, AiO controller, lamp power range, dose-setting sentences)
  2. [2]Atlantium - HOD UV Technology & Products brochure 290524: inline spec tables for RS104 to RZM350, DPM row, ICD footer
  3. [3]NSF International - NSF/ANSI/CAN 61 listing for Atlantium Technologies, current as of 2026-09-30 (ten designations, minimum-flow footnote, municipal-plants footnote)
  4. [4]NSF International - NSF/ANSI 55 listing page, current as of 2026-09-30 (21 manufacturers; Atlantium not present)
  5. [5]US EPA - UV Disinfection Guidance Manual, November 2006 final 815-R-06-007 (OCR; Table 1.4 scope and virus values, lamp-aging sentence)
  6. [6]Atlantium - Food & Beverage market page, retrieved 2026-10-01 ('validated to regulatory standards' sentence)
  7. [7]Atlantium - FAQ page, retrieved 2026-10-01 (sizing inputs, UVT and turbidity, flow meter, commissioning, warranty, spares, consumables, lamp life)
  8. [8]HDR/HydroQual - Validation Test Certification, Atlantium RZ104 Series UV System (undated, hosted by Atlantium): LT2 and adenovirus windows
  9. [9]Atlantium - Bottled Water application brief 280724 (three-parameter dose sentence)
  10. [10]Atlantium - Breweries brochure 010125 (post-carbon placement, 50 m3/hr trial on spiked sterile water)
  11. [11]Atlantium - Coca-Cola Philippines case study 010124 (RZ163-11, 250 gpm, position after polishing filters)
  12. [12]Atlantium - beverage bottler India case study 120324 (firewall, 5-log goal, no measured result)
  13. [13]Atlantium - PUB Singapore post-RO case study 120224 (2 duty plus 1 standby, 474 m3/hr units, 947 and 1240 m3/hr)
  14. [14]Atlantium - news brief, wipes producer on RZ104-11, August 2020 (maximum 20 m3/h)
  15. [15]Atlantium - RZ104 Series datasheet QDSE0A00U-03.20 (2020): 'Application dependent' flow, 1 kW and 2 kW, 125 C lamps off, 316L
  16. [16]Atlantium - Market Insights, Bottling, April 2020 (5-log sentence, no certificate)
  17. [17]Atlantium - Market Insights, Carbonated Soft Drinks, April 2020 (same 5-log sentence)
  18. [18]Atlantium - news brief, PepsiCo Domodedovo plant, May 2020 (300 m3/h, old units before RO, same 5-log sentence)
  19. [19]Atlantium - white paper on HOD UV for microbiological control and chlorine replacement in beverage water treatment, byline 1 August 2022 (dose table, remediation text, validation-letter fields, recirculation)

Products referenced

AtlantiumIL

Atlantium HOD UV

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