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The Model T70G4000 chlorine dioxide generator is designed to produce and consistently maintain a product yield greater than 95%, which makes it ideal for drinking water treatment. It is a two-chemical system, utilizing commercially available concentrations of hydrochloric acid and sodium chlorite in the production of chlorine dioxide. No chlorine gas is required. A proven design, durable construction and the use of the best available corrosion-resistant materials assure efficient gas production, precise solution feeding, low maintenance and dependable operation for the life of the equipment.

The Model T70G4000 chlorine dioxide generator is an all-liquid system. Research has shown a market trend towards chlorine dioxide generators that do not require chlorine gas for the production of chlorine dioxide. This system is designed for use with 32% hydrochloric acid and 25% sodium chlorite.
These are commercially available concentrations, eliminating the need for cumbersome diluting (eliminating the need for softened water).

The Model T70G4000 chlorine dioxide generator is an all-vacuum system, preventing the escape of chlorine dioxide gas to the atmosphere. The reagents are drawn into the generator by a vacuum, produced by an integral ejector. The chlorine dioxide gas produced by the generator is mixed with the ejector motive water and applied as a solution.

The Model T70G4000 chlorine dioxide generator is available with either manual or automatic control. Chlorine dioxide gas production can be manually controlled by manual rate valves or automatically controlled by a ChloromaticTM valve, which accepts a 4-20 mAdc input signal. The automatic system offers as many as two 4-20 mAdc input signals, one output signal, plus four SPDT contacts for auto/manual mode and alarms.
High Yield : Generator has been designed to produce and consistently maintain a product yield greater than 95%.

All Liquid System : 32% Hydrochloric acid and 25% sodium chlorite are the reagents used to generate chlorine dioxide. No chlorine gas is required.

All Vacuum System : The reagents are drawn into the generator by a vacuum, produced by an integral ejector. The chlorine dioxide gas produced by the generator is mixed with the ejector motive water and applied as a solution.

Manual or Automatic Control Options

Safe Operation : An all-vacuum system prevents escape of gas to atmosphere; System shut-down and alarm options.

Minimum maintenance : Corrosion-resistant materials; All periodic maintenance items are easily replaceable.
Capacities : Standard chlorine dioxide generator units are available in the following maximum capacities: 4, 8, 16, 26, 53, 106, 212, 317, 423, 529 PPD (80, 150, 300, 500, 1000, 2000, 4000, 6000, 8000 10,000 g/h) of chlorine dioxide gas.

Flowmeter Rangeability : 10 to 1, flowmeter indication and control limits.

Control Options : The generator can be controlled either manually or automatically. With a manually operated generator, reagent draw into the system is adjusted by manual rate valves located on each flowmeter. This, in conjunction with a differential pressure regulator, controls the rate of chlorine dioxide gas production. For an automatically controlled generator, reagent draw into the system is controlled by a ChloromaticTM valve, which is individually sized for each dosage capacity. The valve actuator is controlled by an electronic current/position converter that receives the signal(s) from the process and adjusts the chlorine dioxide production accordingly. The automatic system offers as many as two 4-20 mAdc input signals, one output signal, plus four SPDT contacts for auto/manual mode and alarms.

Safety Features : If a low vacuum condition exists, a valve will shut-off reagent flow to the generator. An optional vacuum switch is available to close a dry contact. Each reagent flowmeter includes a detector
with alarm, which detects the presence/absence of reagent. Two contacts are available for alarm transmission. A vacuum regulating valve prevents both overpressure and excessive vacuum conditions.

Connections : Ejector water inlet : 1" NPTF
Connections : Dilution water inlet: 1/2" NPTF
Connections : Chlorine dioxide solution: 1" NPTM
Connections : Reagents inlet: 1/2" NPTF
Connections : Drain: 1/2" NPTF
A connection kit is available for connecting the generator to the customer-supplied reagent tanks. The kit includes 39 feet (12 m) of hose and (7) ½” connectors.

Electrical Requirements : 120 VAC, 60 Hz (220 VAC, 50 Hz)
Electrical Requirements : 50 VA Max.
Input/Output Signals (Auto. Unit) :
ㆍ(1) 4-20 mAdc input, 10 A, 120V, 60Hz (220V, 50Hz) for
ㆍChloromaticTM valve control
ㆍOptional : (1) 4-20 mAdc input, 10 A, 120V, 60Hz(220V,
ㆍ50 Hz) for use with the MicroChem2 Residual Analyzer
ㆍ(1) 4-20 mAdc output, ChloromaticTM valve position,
ㆍ10 A, 120V, 60Hz (220V, 50 Hz)
ㆍSPDT contacts: (1) automatic/manual operation,
ㆍ(1) low vacuum alarm, (2) reagent low flow alarms,
ㆍ10 A, 120V, 60Hz (220V, 50 Hz)

Temperature Limits : 41 to 86°F (5 to 30°C), optimum conditions are achieved at 68°F (20°C)
Reagents :
Commercially Available : 32% Hydrochloric Acid (Hydrofluoric Acid Free) 25% Sodium Chlorite
To produce 1 g of ClO2 requires 4.3 ml of hydrochloric acid, 6 ml of sodium chlorite and 18.4 ml water. Diluted reagents are recommended for low range generators (4, 8 and 16 PPD / 80, 150 and 300 g/h). In this case, no reaction water is required. Dilution concentrations are: 8.5% hydrochloric acid (HF free) and 7.5% sodium chlorite.
In this case, to produce 1g of ClO2 requires 23.2 ml of hydrochloric acid and 23.2 ml of sodium chlorite.

Dimensions : 24 x 60 x 25.6 inches (610 x 1524 x 650 mm)

Shipping Weight : 165 to 250 lbs (75 to 110 kg)

Standard Unit Features :
ㆍSight glass for chlorine dioxide solution, for visual verification of product quality
ㆍVacuum gauge, psi/kPa
ㆍLow vacuum alarm contact
ㆍAlarm indication with manual reset

Cabinet fiberglass reinforced polyester, white.
Hydraulic connections teflon tubing
Reaction tower rigid PVC, fiberglass reinforced
ㆍVacuum vent valve
ㆍVacuum switch
ㆍWater line pressure reducing valve
ㆍReagent lines connector kit
ㆍReagent line filter
ㆍSerial link (RS485, RS232 or RS422)
ㆍSecurity control panel: Includes functions for power supply shut-down, ejector water supply shut-down,
ㆍlow vacuum alarm and retransmission signal, low reagent alarm and retransmission signals, chlorine
ㆍdioxide gas presence in air alarm (for use with chlorine dioxide gas detector) and indication lights.
ㆍReagent transfer pump control panel for contractor supplied storage tanks and transfer pumps.
The hydrochloric acid and sodium chlorite reagents are drawn into the generator reaction chamber under a vacuum, produced by an integral ejector. For manual control systems, the reagent flow is controlled by manual rate control valves located on the flowmeters. For automatically controlled systems, reagent flow is
controlled by a ChloromaticTM valve, which is individually sized for each dosage capacity. A regulated amount of water is also drawn into the reaction chamber to optimize the reaction.
The chlorine dioxide gas is drawn out of the reaction chamber under a vacuum produced by the integral ejector where it is mixed with the ejector motive water and applied as a solution. The solution is passed through a sight glass for visual verification of product quality. The entire system is completely under vacuum from reagent draw into the generator to the point of application. If a low vacuum condition exists, a valve will shut-off reagent flow to the generator. A low vacuum alarm contact is included. A vacuum regulating valve prevents both overpressure and excessive vacuum conditions.
An automatically controlled system includes as many as two 4-20 mAdc input signals (one dedicated to the ChloromaticTM valve, one optional for use with the MicroChem2 Residual Analyzer), one 4-20 mAdc output signal for ChloromaticTM valve position retransmission and SPDT contacts for automatic/manual operation, low vacuum alarm, two low reagent alarms.
The chlorine dioxide generation system shall be an all-liquid, all-vacuum type with a capacity of _______ PPD (kg/h) of chlorine dioxide solution. The unit shall be designed to produce and consistently maintain a product yield greater than 95%.

The system shall be a two-chemical reagent type, utilizing hydrochloric acid and sodium chlorite, in commercially available concentrations, in the production of chlorine dioxide gas. No chlorine gas is required. The reagents are to be drawn into the generator by a vacuum, produced by an integral ejector.

The chlorine dioxide gas produced by the generator shall be mixed with the integral ejector motive water to form a solution that shall be vacuum fed to the point of application.

(Manual Systems) Reagent draw (flowrate) into the system shall be adjustable by manual rate valves located on each flowmeter. This, in conjunction with an integral differential pressure regulator, shall control the rate of chlorine dioxide gas production.

(Automatic Systems) The chlorine dioxide generating system shall be flow paced. Reagent draw into the system shall be controlled by a ChloromaticTM valve, which is to be individually sized for each dosage capacity. The ChloromaticTM valve actuator shall be controlled by an electronic current/position converter, that will receive a 4-20 mAdc signal from the process (flowmeter or control source) and adjust the rate of reagent draw accordingly in order to ultimately control the rate of chlorine dioxide production. The chlorine dioxide generator shall be provided with one optional 4-20 mAdc input signal (for use with the MicroChem2 Residual Analyzer), one 4-20 mAdc output signal (for ChloromaticTM valve position), plus four SPDT contacts for auto/manual mode and alarms.

The chlorine dioxide generator cabinet shall be constructed of fiberglass-reinforced polyester. The reaction chamber shall be constructed of rigid fiberglass-reinforced PVC.

Safety interlocks shall be provided to automatically shut down the system in the event of a loss of vacuum for any reason.