Water and
Wastewater Treatment

Enfil's Water and Effluent Treatment Division specializes in providing complete systems for water and effluent treatment, including EPC, EPS, turn-key solutions and specific equipment to meet the needs of industrial, domestic and public.

Experience physical-chemical treatments, mainly in drinking and industrial water treatment plants, as well as biological systems for effluent treatment, which can be used for both domestic effluents and a wide range of industrial effluents. We employ advanced technologies, such as ultrafiltration membranes, reverse osmosis and advanced oxidation, in addition to various polishing methods.

The treatment solution is customized to meet the specific needs of each application, and multiple operations can be performed in a single treatment unit.

WATER AND EFFLUENT TREATMENT PROCESSES

Explore the physical-chemical and biological processes offered by Enfil.

> High-rate sedimentation;

> Clarification;

> Flocculation;

> Filtration: multimedia filters;

> Membranes (Microfiltration, Ultrafiltration, Nanofiltration, and Reverse Osmosis);

> Ultrafiltration;

> Reverse Osmosis;

> Seawater Desalination;

> Dissolved Air Flotation (DAF);

> Ion Exchange Demineralization – Resins;

> Disinfection: chlorination, ultraviolet, and ozonization;

> EDR (ElectroDialysis Reversal);

> Sludge Dewatering;

> Mixed Bed Polishing.

> Aerobic, anaerobic, and anoxic treatment;

> MBR – Membrane BioReactor;

> MBBR – Moving Bed BioReactor;

> Advanced Oxidation. Ozonation systems, including polishing.

WATER AND EFFLUENT TREATMENT EQUIPMENT

Enfil offers two categories of equipment for water and effluent treatment, which can be conventional or combined operations. These technologies are used according to the specific needs of each project, ensuring efficient and sustainable treatment of water resources.

> Static and dynamic settlers;

> DAF (Dissolved Air Flotation);

> Upflow/downflow multimedia filters, open/closed;

> Cationic, anionic, and mixed bed exchangers;

> Recirculation systems (reuse) in steel mills. Example: gas washing systems, cooling
contact systems, and non-contact systems.

> Conventional and high-rate lamella clarifiers/decanters: allows for significant
reduction in the required space for clarification;

> IFAS (Integrated Fixed-film Activated Sludge) or Integrated Fixed-film Activated
Sludge System.

MARKETS OF OPERATION

We offer a wide range of solutions to meet the demands of various market segments.

Public - Sanitation

> Potable water treatment, conventional routes, Ultrafiltration, Microfiltration,
Nanofiltration, and Flotation;

> Effluent treatment, conventional routes and MBR, MBBR, MABR;

> Reuse water treatment;

> Desalination through Reverse Osmosis;

> Solar and Thermal Sludge Drying System;

> UV and Ozone Disinfection.

Steel Industry

> Blast Furnace: direct and indirect systems; Gas washing water; Make-up water
treatment (Purge); Blow-Down treatment (Purge);

> Sintering: yard; Slag granulation; Treatment of gases from dosers and dryers (Filters, Precipitators, and Gas Washers);

> Steel Mill: recirculation water – direct from the Steel Mill; Steel Mill gas washing; UHR filtration, ultra high rate; Make-up water treatment (Purge); Vacuum degassing; RH condensate water system; Sludge Treatment System; Collection and Treatment of Converter Gases;

> Coke Oven: Biological effluent treatment – Coke Oven; Coal yard; Recirculation of waters and effluents from the Coke Oven;

> Carbochemical: Gas treatment; Organic vapors; Treatment of acidic and oily waters; Physical, Physico-chemical, and Biological Effluent Treatment; Treatment of BTEX Gases; Sludge Treatment.

> Continuous Casting: direct and indirect systems; Scale pit; Treatment of cooling waters and gases from the continuous casting processes, treatment of oily waters.

> Hot Strip Mill (HSM) and Cold Strip Mill (CSM): Direct and indirect systems; UHR filtration, ultra high rate; Scale pit;

> Electrolytic Cleaning and Electroplating Line;

> Cooling Systems;

> Steam and Energy Generation: boiler water, condensate polishing; Reverse Osmosis;

> General: industrial consumption water; Reuse water; Microfiltration; Ultrafiltration,
Nanofiltration, Reverse Osmosis;

> “Reuse” water or effluent consumption intended for “reuse”.

Mining

> Industrial and drinking water treatment;

> Effluent treatment;

> Treatment of boiler water and other specific uses;

> Condensate polishing;

> Water treatment for pump sealing.

Oil and Gas

> Treatment of general, industrial, and drinking water;

> Seawater treatment for injection – Skid Mounted and also for consumption on platforms;

> Offshore systems;

> Treatment of acidic and oily waters;

> Industrial effluent treatment;

>Lamellar separation;

> Microfiltration, Ultrafiltration, Nanofiltration, Reverse Osmosis, EDR, and Softening;

> Flotation and separation treatment of oily waters.

Pulp and Paper

> Industrial and drinking water treatment;

> Microfiltration, Ultrafiltration, Nanofiltration, Reverse Osmosis;

> Primary Treatment – pulp and paper;

> Aerated lagoons treatment;

> Treatment of effluents from pulp and paper production lines; LLAS – Low load Activated Sludge; Double Stage Activated Sludge; UASB + Activated sludge – for paper; MBBR – Moving Bed BioReactor;

> Treatment of boiler water and other specific uses through ion exchange or reverse osmosis;

> Treatment of effluents from the bleaching line;

> Condensate polishing;

> Water treatment for pump sealing;

> Sludge drying system;

> Tertiary treatment.

Energy

> Feedwater and effluent treatment;

> Condensate polishing.

Cases

SANEPAR – WWTP BELÉM

KLABIN – PUMA – COMPLETE WWTP WITH TERTIARY TREATMENT

SANEP – WTP SÃO GONÇALO

SANASA – WWTP BOA VISTA – REUSE – MBR

CAESB – WTP LAGO NORTE – ULTRAFILTRATION

PETROBRAS – RNEST – WTP/REUSE/DESMI/EDR