We design and build systems that efficiently eliminate hazardous contaminants, including:

The output is:

heavy metals (chromium, nickel, copper, zinc, cadmium)

Treated water, suitable for reuse or compliant discharge

Dewatered sludge, safely disposed through licensed landfills

cyanides
acids
alkalis
and other toxic substances

Our solutions ensure full environmental compliance and safe water discharge, enabling sustainable and responsible industrial operations.

We apply proven treatment technologies, such as chemical (reagent-based), electrochemical, membrane, ion exchange, or hybrid solutions that combine these methods for maximum efficiency.

EVESS is an expert in wastewater treatment for electroplating plants

Evess engineers, builds, and services turnkey Effluent Treatment Plants (ETPs) for galvanic production—including chromium, nickel, zinc and mixed-metal lines. Our systems remove heavy metals and other hazardous contaminants delivering reusable water where practical and reliable compliance where required.

Legal compliance & public health: meeting authority limits, preventing pollution of water bodies and protecting ecosystems and communities.

Handling variable effluents: different processes (pre-treat, plating, passivation, rinses) create different waste streams; strong treatment is needed to avoid harm.

Water reuse: enabling reuse (process/cooling/cleaning), reducing dependence on freshwater sources.

Save money: good treatment lowers chemical use, waste volume, and disposal costs over the life of the plant.

Operating economics: advanced treatment lowers chemical use, waste volume, and disposal costs over the plant lifecycle.

Sustainability & reputation: The UAE government supports sustainable growth. Clear environmental action builds trust with regulators, customers, and investors.

ETPs are among the most cost-effective and technologically advanced ways to remove hazardous contaminants from industrial wastewater. In the United Arab Emirates, where environmental regulations are strict, efficient ETPs are essential for:

EVESS® - Industrial Effluent Treatment for Electroplating

Why ETP Matter in the UAE:

Evess design, supply, install and commission high-quality industrial ETPs. We build processes as required by your effluent matrix, duty, and regulatory envelope to produce a tailored, documented solution that is practical to operate and maintain.

What We Deliver

Guaranteed permit compliance (subject to approved design basis and lab tests).

Reuse-ready water — ion-exchange polishing for return to process/utility loops; compliant discharge for surplus.

Lower lifecycle cost — efficient chemistry, single-stream operation where feasible, automation and smart controls.

Reliable sludge management — dewatering, testing and routing solutions that reduce hazard and cost.

You get:

Intelligent control strategy with automated dosing adjustment.

Waste minimization through sludge thickening + filter press → lower disposal costs.

Compact and flexible design with quick recalculation when influent composition changes.

ADVANCED TECHNICAL FEATURES

Full quality control with sensors at critical points, event logging, and operational data.

Chemical-resistant materials (PP/PVC-U/PVDF) for durability and easy maintenance.

Remote diagnostics & support with secure access to process data.

Standardized O&M modules with available spare parts and clear procedures.

Optional acceptance of third-party effluent (where regulations permit).

REGULATORY COMPLIANCE

EVESS systems are engineered to consistently meet or exceed the strictest regulatory requirements, ensuring reliable environmental compliance across the Middle East, Russia, and global markets.

*AS PER SCHEDULE A, TRADE EFFLUENT CONTROL REGULATIONS 2022 (UAE DEPARTMENT OF ENERGY)

pH
COD (mg/L)
TSS (mg/L)
TDS (mg/L)
Total Chromium (mg/L)
Chromium (VI)
Nickel (mg/L)
Copper (mg/L)
Zinc (mg/L)
Cyanide (mg/L)

6-9
1000
500
2000
5
-
10
5
1
2

6-9
500
300
1000
0.5
0.05
0.25
1
1
0.07

Parameter

UAE Limits*

Russian Limits

proven SLUDGE safety

A primary EGC advantage is the very low toxicity of the resulting sludge, which simplifies permitting, handling, storage, transportation, and disposal.

Under the US EPA TCLP protocol (Toxicity Characteristic Leaching Procedure), sludge from conventional alkaline neutralisation (Na₂CO₃, Ca(OH)₂) was compared with sludge from EGC. The results demonstrate orders-of-magnitude lower leaching of heavy metals with EGC, confirming secure fixation.

EGC ensures stronger environmental safety by delivering single-stream operation, low-salinity treated water, environmentally safe sludge, and flexibility for batch or continuous operation.

* TCLP results are indicative and subject to confirmation on the client’s wastewater and site-specific operating conditions.

Zn
Pb
Ni
Cr

<252.00
<0.05
2.50
5.37

<0.01
<0.05
<0.05
<0.01

Metal

Table 1

Reliability of Heavy-Metal Fixation in Sludge (TCLP leachate, mg/L)

Sludge after alkaline neutralisation

Sludge after EGC neutralisation

EGC ADVANTAGES

Electro-Generated Coagulant (EGC) method achieves higher treatment efficiency, ensures regulatory compliance, reduces costs, and delivers safer, reusable by-products.

Meeting discharge limits

Meets only “soft” limits

Meets UAE local authority permit limits

Water return to production

Not returned

Returned to process and utility loops (after ion-exchange treatment)

Treated-water quality

Extra salinity; Daphnia test negative

No extra salinity; Daphnia test positive

Sludge disposal route

Hazardous-waste landfill

Non-hazardous landfill after lab confirmation

Sludge utilisation

Typically none

Possible: lightweight aggregate, pigment, roofing ceramics, metallurgy

Use of toxic reagents

Acid, alkali, bisulphite, etc.

Acid, alkali, bisulphite, etc.

Need to segregate streams

Chromium and acid/alkaline treated separately

All streams treated together (one stream)

Contaminant spectrum

Narrow

Wide: heavy metals removed in the presence of organics/dyes/detergents/coolants

pH dependence

Different metals need different pH ranges

Co-precipitation of metals within one pH band

Evaluation criterion

Table 2

EGC vs Conventional Reagent Method

Conventional reagent method

EGC method

Meeting discharge limits

Meets only “soft” limits

Meets UAE local authority permit limits

Water return to production

Not returned

Returned to process and utility loops (after ion-exchange treatment)

Treated-water quality

Extra salinity; Daphnia test negative

No extra salinity; Daphnia test positive

Sludge disposal route

Hazardous-waste landfill

Non-hazardous landfill after lab confirmation

Sludge utilisation

Typically none

Possible: lightweight aggregate, pigment, roofing ceramics, metallurgy

Use of toxic reagents

Acid, alkali, bisulphite, etc.

Acid, alkali, bisulphite, etc.

Need to segregate streams

Chromium and acid/alkaline treated separately

All streams treated together (one stream)

Contaminant spectrum

Narrow

Wide: heavy metals removed in the presence of organics/dyes/detergents/coolants

pH dependence

Different metals need different pH ranges

Co-precipitation of metals within one pH band

Evaluation criterion

Conventional reagent method

EGC method

BENEFITS
FOR THE CUSTOMERS

Lower operational costs

Reduce water consumption and maximize water reuse

Environmental compliance

Affordable and reliable equipment

Supports the UAE Sustainability Agenda 2030/2050

Enables circular water use in industrial facilities

Helps local manufacturers reduce environmental impact while staying competitive

Reduced dependence
on imported technologies

BENEFITS FOR THE UNITED ARAB EMIRATES

Supporting the UAE Sustainability Agenda 2030/2050 by enabling water reuse and minimizing industrial waste.

Building long-term partnerships with local companies, EPC contractors, and government entities.

We are committed to:

Expanding our regional presence with local service, technical support, and knowledge transfer.

Driving innovation to help industries reduce costs while meeting the highest environmental standards.

Our vision is to become a trusted regional partner, helping UAE industries operate cleaner, more efficient, and truly sustainable.

Facility: Drum & rack zinc electroplating line with multiple rinse sections.

Treatment capacity: 0.5 m³/h (batch mode operation)

Operation: 2 shifts/day (~3,810 h/year)

Process: Reagent-based treatment with segregated stream collection and deep filtration.

Automation: Full SCADA-based automation with PLC logic control, intuitive HMI, event logging, alarm management, and remote access.

Client outcomes:

Delivered projects
ETP for zinc plating

Stable compliance for pH and heavy metals under variable influent.

Lower OPEX via precise dosing and optimized solids handling.

Transparent, controllable process with remote diagnostics and service access.

Automated Wastewater Treatment Plant for Zinc Electroplating Line

Acidic and alkaline rinses
Zinc-containing process effluent
Chromium(III)-bearing wastewater

Segregated effluent handling
Batch treatment in a single reactor⁠⁠
Auto-adjustment of treatment method

Concentrates (backwash and process dumps)

Influent Streams

EVESS Solution

Effluent holding tanks (T1–T5) made of PP/PVC with sensors and chemical-resistant pumps

Reaction tank (R1) with agitator, pH/level sensors, automated reagent dosing units

Sludge thickener + chamber filter press for sludge minimization

Equalization tank with air sparging system

System Components

Filtration units (F1/F2) for final treatment before discharge

Chemical preparation and dosing stations for NaOH, H₂SO₄, Ca(OH)₂, and flocculants

SCADA/PLC system with operator terminal, alarm management, data logging, and remote diagnostics

1

Process Flow

2

3

Effluent segregation (T1–T5):

prevents cross-contamination and optimizes reagent usage.

Reaction stage (R1):

Phase separation:

pH correction, precipitation, and flocculation.

clarified water → equalization; sludge → thickener → filter press.

4

Final treatment:

equalization + pH adjustment → F1/F2 filtration → discharge.

One stream in — clean water back to production. Minimal chemicals. Fully automated.

Project Snapshot

Capacity:

Industry / Process:

Technology:

Delivery scope: chromium plating plant with the integrated automated wastewater treatment plant under a single turnkey contract.

Wastewater treatment plant based on Electro-Generated Coagulant (EGC) technology that treats mixed chromium-bearing and acid/alkali streams without segregation, operates reliably at elevated influent concentrations (up to 1,500 mg/L), and returns treated water to process/utility loops.

Hard chromium plating (mixed rinses: chromium-bearing and acid/alkali)

Electro-Generated Coagulant (EGC)

~ 3 m³/h (scalable)

Delivered projects
ETP for chromium plating

Automated Wastewater Treatment for a Chromium Electroplating Line

Full compliance with local regulations on Maximum Allowable Concentrations (MAC).

Efficient water reuse: ion-exchange treatment and return to process/utility systems; surplus to compliant discharge.

No added salinity in treated water; positive acute aquatic toxicity screen (Daphnia magna).

Single-stream operation: no need to separate chromium and acid/alkaline streams — fewer tanks, pumps and lines; lower CAPEX/OPEX

Outcomes for the Client

Low-toxicity sludge: after dewatering, the cake qualifies as non-hazardous (subject to lab confirmation). TCLP confirms secure fixation of heavy metals. Potential beneficial use: lightweight aggregate, pigments, roofing ceramics, metallurgy.

Full automation: PLC with HMI, pH/ORP/level control, event logging, interlocks, remote support.

Seamless integration with the plating line: automatic transfer by level, overflow protection, and failsafe scenarios.

Higher efficiency and lower cost versus conventional neutralisation/precipitation.

Electro-Generated Coagulant (EGC) is a reagent-based process where the coagulant is produced electrochemically in a dedicated working solution (not inside the wastewater) and then precisely dosed into the reactor.

Aligned with HELCOM best-practice principles: minimise toxicity, enable reuse, and ensure responsible waste handling.

Batch operation (with an option to scale to continuous service) and true one-stream treatment — no chromium vs. acid/alkaline segregation.

Wide contaminant window: heavy metals are removed effectively even in the presence of organics, dyes, detergents, coolants, etc.

Key advantages

Process Flow

Single working pH band for co-precipitation of multiple metals, simplifying control.

Coagulant generation on electrolysers and storage in working-solution tanks.

Collection & equalisation of mixed chromium and acid/alkaline rinses in the reactor with low-speed agitator and online pH.

1

2

3

4

5

Dosing of EGC, alkali/acid for pH trim, and flocculant; formation of dense flocs.

Solid–liquid separation: thickener → (optional) magnetic separator → chamber filter press (cake moisture 35–40%).

Treatment & reuse: treated water → clean-water tank → ion-exchange → return to process/utility loops or compliant discharge.

Electrolyser-type coagulant generators with rectifiers.

Equalisation/reaction tank with agitator and online pH/ORP; dosing skids for alkali/acid, EGC working solution and flocculant (preparation tanks included).

System Components

Thickener, optional magnetic separator, chamber filter press.

Ion-exchange columns for polishing and reuse.

Pumps, valves, instruments; PLC control cabinet with HMI and remote access.