Envirolyte Modular HD generators, also known as MHDG systems, are stand-alone on-site hypochlorous acid generators designed for high-output water disinfection and industrial treatment projects. The system converts water, salt and electricity into HClO-rich anolyte with regulated pH and configurable free available chlorine concentration.
The Modular HD generator is designed for facilities that need reliable on-site production of disinfectant solution without depending on delivered chemical products. Typical use cases include water disinfection, municipal and industrial treatment, food processing, cooling towers and applications where stable FAC output, automated production and scalable capacity are required.
The Modular Unit is part of the Envirolyte high-output generator range and is closely related to HD anolyte generators and ANW anolyte generators. It should be evaluated when a project requires 3.0 kg/h or 5.0 kg/h of active chlorine as HClO, with the possibility of modular expansion in a compact footprint.
On-Site Hypochlorous Acid Generation
The Envirolyte MHDG system produces hypochlorous acid from the electrochemical reaction of water, salt and electricity. Envirolyte has long experience in designing and manufacturing on-site generators using patented cells and time-tested components.
According to Envirolyte documentation, MHDG systems can produce 3.0 kg/h or 5.0 kg/h of active chlorine in the form of HClO at 500 ppm, 1000 ppm, 2000 ppm, 3000 ppm or 5000 ppm FAC, with regulated pH in the range of approximately 2.5–7.5. The system uses flow, pressure, brine concentration sensors and level switches to automate production.
| Parameter | Specification or project note |
|---|---|
| Generated solution | HClO-rich anolyte / hypochlorous acid solution generated on site. |
| FAC output options | 3.0 kg/h or 5.0 kg/h of active chlorine, depending on configuration. |
| Anolyte concentration options | 500 ppm, 1000 ppm, 2000 ppm, 3000 ppm or 5000 ppm FAC, depending on model and project requirements. |
| pH regulation | Approximately pH 2.5–7.5 during production; provisions for pH ≥8 can be introduced upon request. |
| Automation | Flow, pressure, brine concentration sensors and level switches automate production and tank filling. |
| Scale control | Cell cleaning is performed on an as-needed basis. |
| Expansion | Modular design allows expansion by 5x or more while maintaining a modest footprint. |
Typical Installation for Water Disinfection
A typical Modular HD generator installation includes source water pretreatment, brine preparation, the MHDG generator, an anolyte storage tank, dosing pump and FAC or ORP monitoring. As solution is used, the system can automatically restart production and refill the holding tank.
Why Use a Modular HD Generator?
On-site generation allows operators to produce HClO solution when needed, reducing dependence on third-party chemical supply chains and simplifying storage and handling. Envirolyte documentation also states that the systems require very little raw material and can produce a liter of HClO solution for less than one cent.
| Benefit | Practical value |
|---|---|
| Small footprint | Pre-assembled modular package supports compact installation and easier integration. |
| Remote monitoring and control | Helps maintain optimal operation and reduces required time on site. |
| Modular expansion | Additional modules can be added to meet increasing FAC demand. |
| Factory-tested package | Pre-assembled and factory-tested design simplifies commissioning. |
| Automated production | Level switches, flow sensors, pressure sensors and brine concentration control support unattended operation. |
| Water treatment performance | Envirolyte documentation discusses advanced treatment capabilities including biofilm control, DBP reduction, taste and odor improvement and water clarification. |
Specifications of 3 kg/h MHDG Systems
| Specification | ELA-6000HD | ELA-10000HD | ELA-15000HD | ELA-60000ANW |
|---|---|---|---|---|
| Anolyte / HClO output | 600 L/h | 1000 L/h | 1500 L/h | 6000 L/h |
| Anolyte concentration | 5000 ppm | 3000 ppm | 2000 ppm | 500 ppm |
| FAC output | 3.0 kg/h | 3.0 kg/h | 3.0 kg/h | 3.0 kg/h |
| pH of anolyte | 2.5–7.5 | 2.5–7.5 | 2.5–7.5 | 2.5–7.5 |
| Catholyte / NaOH output | ~10 L/h | ~10 L/h | ~10 L/h | ~10 L/h |
| Catholyte concentration | ~80 g/L | ~80 g/L | ~80 g/L | ~80 g/L |
| pH of catholyte | ~13.5 | ~13.5 | ~13.5 | ~13.5 |
| Power source | 380–420 VAC, three phase | 380–420 VAC, three phase | 380–420 VAC, three phase | 380–420 VAC, three phase |
| Power consumption | 21.0 kW/h | 21.0 kW/h | 21.0 kW/h | 21.0 kW/h |
| Salt consumption | 3.0 g/g of HClO | 3.0 g/g of HClO | 3.0 g/g of HClO | 3.0 g/g of HClO |
| PLC | Unitronics Vision 570 touchscreen | Unitronics Vision 570 touchscreen | Unitronics Vision 570 touchscreen | Unitronics Vision 570 touchscreen |
| Included controls | Main water input valve, water flow sensor, pressure sensor, cell temperature control, brine concentration control and integrated cell flushing | Main water input valve, water flow sensor, pressure sensor, cell temperature control, brine concentration control and integrated cell flushing | Main water input valve, water flow sensor, pressure sensor, cell temperature control, brine concentration control and integrated cell flushing | Main water input valve, water flow sensor, pressure sensor, cell temperature control, brine concentration control and integrated cell flushing |
| Connections | Water inlet 1", anolyte outlet 1", catholyte outlet 3/4", brine inlet 1/2", flushing acid inlet 3/8", flushing acid/drain 3/4", drain 1/2", H2 outlet 3/4" | Water inlet 1", anolyte outlet 1", catholyte outlet 3/4", brine inlet 1/2", flushing acid inlet 3/8", flushing acid/drain 3/4", drain 1/2", H2 outlet 3/4" | Water inlet 1", anolyte outlet 1", catholyte outlet 3/4", brine inlet 1/2", flushing acid inlet 3/8", flushing acid/drain 3/4", drain 1/2", H2 outlet 3/4" | Water inlet 1 1/2", anolyte outlet 1 1/2", catholyte outlet 3/4", brine inlet 1/2", flushing acid inlet 3/8", flushing acid/drain 3/4", drain 1/2", H2 outlet 3/4" |
| Dimensions, HxDxW | 2254 x 1600 x 800 mm | 2254 x 1600 x 800 mm | 2254 x 1600 x 800 mm | 2254 x 1600 x 800 mm |
| Weight | 720 kg | 720 kg | 720 kg | 720 kg |
| Crated dimensions, HxDxW | 2312 x 1960 x 930 mm | 2312 x 1960 x 930 mm | 2312 x 1960 x 930 mm | 2312 x 1960 x 930 mm |
| Crated weight | 800 kg | 800 kg | 800 kg | 800 kg |
Specifications of 5 kg/h MHDG Systems
| Specification | ELA-10000HD | ELA-17000HD | ELA-20000HD |
|---|---|---|---|
| Anolyte / HClO output | 1000 L/h | 1700 L/h | 2000 L/h |
| Anolyte concentration | 5000 ppm | 3000 ppm | 2500 ppm |
| FAC output | 5.0 kg/h | 5.0 kg/h | 5.0 kg/h |
| pH of anolyte | 2.5–7.5 | 2.5–7.5 | 2.5–7.5 |
| Catholyte / NaOH output | ~10 L/h | ~10 L/h | ~10 L/h |
| Catholyte concentration | ~80 g/L | ~80 g/L | ~80 g/L |
| pH of catholyte | ~13.5 | ~13.5 | ~13.5 |
| Power source | 380–420 VAC, three phase | 380–420 VAC, three phase | 380–420 VAC, three phase |
| Power consumption | 35.0 kW/h | 35.0 kW/h | 35.0 kW/h |
| Salt consumption | 3.0 g/g of HClO | 3.0 g/g of HClO | 3.0 g/g of HClO |
| PLC | Unitronics Vision 570 touchscreen | Unitronics Vision 570 touchscreen | Unitronics Vision 570 touchscreen |
| Included controls | Main water input valve, water flow sensor, pressure sensor, cell temperature control, brine concentration control and integrated cell flushing | Main water input valve, water flow sensor, pressure sensor, cell temperature control, brine concentration control and integrated cell flushing | Main water input valve, water flow sensor, pressure sensor, cell temperature control, brine concentration control and integrated cell flushing |
| Connections | Water inlet 1", anolyte outlet 1", catholyte outlet 3/4", brine inlet 1/2", flushing acid inlet 3/8", flushing acid/drain 3/4", drain 1/2", H2 outlet 3/4" | Water inlet 1", anolyte outlet 1", catholyte outlet 3/4", brine inlet 1/2", flushing acid inlet 3/8", flushing acid/drain 3/4", drain 1/2", H2 outlet 3/4" | Water inlet 1", anolyte outlet 1", catholyte outlet 3/4", brine inlet 1/2", flushing acid inlet 3/8", flushing acid/drain 3/4", drain 1/2", H2 outlet 3/4" |
| Dimensions, HxDxW | 2254 x 1600 x 800 mm | 2254 x 1600 x 800 mm | 2254 x 1600 x 800 mm |
| Weight | 720 kg | 720 kg | 720 kg |
| Crated dimensions, HxDxW | 2312 x 1960 x 930 mm | 2312 x 1960 x 930 mm | 2312 x 1960 x 930 mm |
| Crated weight | 800 kg | 800 kg | 800 kg |
Modular Expansion
Envirolyte Modular HD systems can be expanded by adding modules to increase total FAC output while keeping a compact layout. Depending on whether the base configuration is 3 kg/h or 5 kg/h, one to five modules can support approximate active chlorine outputs of 3–15 kg/h or 5–25 kg/h respectively.
Applications and Selection Logic
Modular HD generators are selected for larger water treatment and disinfection projects where high FAC output, regulated pH and automated operation are required. Related Envirolyte application areas include on-site water disinfection, industrial applications, food processing, cooling towers and CIP solutions for processing equipment.
| Project requirement | Recommended Envirolyte option |
|---|---|
| High-output modular HClO generation at 3.0 kg/h or 5.0 kg/h FAC per module | Modular Unit / Modular HD generator. |
| High-FAC anolyte production at 1000–6000 ppm in a non-modular product range | HD anolyte generators. |
| Neutral low-salt anolyte production, typically around 500 ppm FAC | ANW anolyte generators. |
| Standard anolyte/catholyte production where a useful catholyte stream is required | ELA anolyte generators. |
Frequently Asked Questions
The Envirolyte Modular Unit is a Modular HD generator system designed to produce HClO-rich anolyte on site from water, salt and electricity for high-output water disinfection and industrial treatment applications.
Envirolyte Modular HD generator configurations are presented with 3.0 kg/h and 5.0 kg/h FAC output options, with modular expansion allowing higher total output where required.
The MHDG system can be configured for anolyte concentrations including 500 ppm, 1000 ppm, 2000 ppm, 3000 ppm and 5000 ppm FAC, depending on model and project requirements.
Yes. Envirolyte documentation states that pH can be regulated during production in the approximate range of pH 2.5–7.5, with provisions for pH ≥8 available upon request.
The system can be expanded by adding modules. Depending on the selected base configuration, five modules can provide approximately 15 kg/h or 25 kg/h of active chlorine.
Request Modular Unit Support
For technical guidance, application evaluation or model selection, send your enquiry to Envirolyte Industries International Ltd. Envirolyte can help assess required FAC output, HClO concentration, pH range, dosing control, storage volume, automation requirements, modular expansion options and integration with municipal, industrial, food processing or water disinfection systems.
