Envirolyte HD anolyte generators are industrial on-site hypochlorous acid generator systems designed to produce high-FAC anolyte disinfectant from water, salt and electricity. The HD range extends the active chlorine concentration of generated anolyte and supports adjustable free available chlorine production from 1000 to 6000 ppm using a diaphragm electrolyser.
These high-concentration HOCl and anolyte generation systems are intended for municipal water treatment, industrial disinfection, process water treatment, food processing and businesses that bottle or package anolyte for distribution. Higher FAC concentration can reduce the required size of dosing pumps, storage tanks and other installation components in selected projects.
Compared with standard ELA anolyte generators, Envirolyte HD systems are optimized for high FAC output, lower salt and energy consumption, and compact on-site disinfectant generation. For projects where commercially useful catholyte is also required, standard ELA anolyte generators or dedicated CG catholyte generators should be evaluated.
What Makes HD Anolyte Generators Different?
The task of the HD generator design is to extend the range of active chlorine concentration in anolyte disinfectant and produce disinfectants with adjustable active chlorine concentration from 1000 to 6000 ppm. This is achieved by means of a diaphragm electrolyser without using external circulation circuits or Peltier elements.
| Parameter | HD generator specification or project note |
|---|---|
| Generated solution | High-FAC anolyte / HOCl-rich disinfectant solution generated on site. |
| Active chlorine concentration | Adjustable FAC range from 1000 to 6000 ppm, depending on system configuration and application requirements. |
| Typical pH | The pH of HD anolyte depends on source water quality and is generally around pH 7.5. |
| Optional pH regulation | Optional pH regulation can be specified in the approximate range of pH 5.5–7.5. This requires additional components and should be confirmed when ordering. |
| Catholyte side stream | HD systems do not produce catholyte in commercially viable volumes. Catholyte flow is approximately 0.4% of the total generator flow and can normally be safely disposed of according to local requirements. |
| Installation requirements | Installation requirements are similar to standard Envirolyte ELA anolyte generators. |
Typical Applications for High-FAC Anolyte
High concentrations of free available chlorine may be useful where projects require compact disinfectant storage, efficient dosing, higher active chlorine output or reduced dependence on transported chemicals. Common application areas include municipal water disinfection systems, industrial applications, food processing, process water treatment and anolyte bottling or packaging operations.
| Requirement | Recommended Envirolyte option |
|---|---|
| High-FAC anolyte at 1000–6000 ppm | HD anolyte generators for concentrated on-site HOCl/anolyte production |
| General on-site anolyte generation with useful catholyte side stream | ELA anolyte generators |
| Commercially useful alkaline catholyte for selected cleaning or process-support tasks | CG catholyte generators |
| Modular high-output HOCl generation for larger water treatment projects | Envirolyte Modular Unit |
Salt and Energy Consumption
Envirolyte documentation reports that ELA-HD anolyte machines are designed to produce anolyte with lower salt and energy consumption than standard ELA machines. According to the Envirolyte Corporate Brochure, approximately 3.0 g of NaCl and about 4.3 W of energy are required to generate 1 g of FAC, which is reported as lower than standard ELA consumption figures.
HD and Modular HD Generator Examples
For larger projects, Envirolyte also provides modular HD generator configurations. The Modular HD generator documentation includes example systems designed around 3.0 kg/h and 5.0 kg/h FAC output, with different anolyte flow rates and concentrations depending on the required operating profile.
| Model | Anolyte output | Anolyte concentration | FAC output | pH range |
|---|---|---|---|---|
| ELA-6000HD | 600 l/h | 5000 ppm | 3.0 kg/h | 2.5–7.5 |
| ELA-10000HD | 1000 l/h | 3000 ppm | 3.0 kg/h | 2.5–7.5 |
| ELA-15000HD | 1500 l/h | 2000 ppm | 3.0 kg/h | 2.5–7.5 |
| ELA-17000HD | 1700 l/h | 3000 ppm | 5.0 kg/h | 2.5–7.5 |
| ELA-20000HD | 2000 l/h | 2500 ppm | 5.0 kg/h | 2.5–7.5 |
Testing, Compliance and Project Evidence
Envirolyte provides supporting materials for engineering teams, consultants and operators evaluating anolyte generation for disinfection and water treatment projects. Relevant resources include microbiological testing of anolyte, Legionella prevention evidence, water disinfectant comparison, approvals and compliance information and quality control information.
A municipal drinking water case study from Ünye City, Turkey describes an Envirolyte ELA-1000HD generator designed to produce 1000 LPH of HOCl/anolyte at 2000 ppm for a city water disinfection project. The same case study reports a dosing control set for 0.5 ppm HOCl residual and benefits related to safety, reduced hazardous chemical handling and microbial control.
Technical Documents
Frequently Asked Questions
An HD anolyte generator is an Envirolyte high-FAC on-site system that produces hypochlorous acid/anolyte disinfectant from water, salt and electricity using a diaphragm electrolyser.
Envirolyte HD anolyte generators are designed to produce adjustable active chlorine concentrations from 1000 to 6000 ppm, depending on system configuration and application requirements.
HD generators produce only a very small catholyte side stream, approximately 0.4% of total flow. For applications that require commercially useful catholyte volumes, standard ELA generators or dedicated CG catholyte generators should be considered.
Typical applications include municipal water treatment, industrial disinfection, food processing, process water treatment, compact high-FAC dosing systems and anolyte bottling or packaging operations.
Request HD Anolyte Generator Support
For technical guidance, application evaluation or model selection, send your enquiry to Envirolyte Industries International Ltd. Envirolyte can help assess the required anolyte concentration, FAC output, pH range, process conditions, installation requirements and integration with existing water disinfection, industrial treatment or bottling systems.
