Solution › Water Treatment
Water scarcity and quality are among the most pressing challenges for industries, municipalities, and communities worldwide. BEN Engineering designs and delivers comprehensive water treatment systems — from municipal wastewater treatment and industrial effluent management to membrane-based desalination and produced water handling for oil & gas operations.
Our engineers integrate proven process technologies with modern automation and monitoring — ensuring water quality compliance, operational efficiency, and long-term system reliability across the full water treatment lifecycle.
Industrial and municipal wastewater treatment demands robust multi-stage processes to reduce BOD, COD, suspended solids, nutrients, and pathogens to levels safe for discharge or reuse. BEN Engineering designs and builds biological, physical, and chemical treatment systems — from small-capacity industrial effluent plants to large municipal wastewater treatment plants (WWTPs).
We integrate advanced technologies including Membrane Bioreactors (MBR), Sequencing Batch Reactors (SBR), Moving Bed Biofilm Reactors (MBBR), and Zero Liquid Discharge (ZLD) systems — with full SCADA/PLC automation for unattended or minimal-operator facilities.
Coarse and fine bar screens, grit classifiers, screw conveyors, and equalization tanks — protecting downstream equipment from large solids and flow surges while providing buffer capacity for variable influent loads.
Combined biological treatment and membrane filtration in a compact footprint — producing TSS-free effluent with BOD <5 mg/L and E. coli <1 CFU/100mL, suitable for direct reuse or RO feed without tertiary clarification.
Time-based fill-and-draw activated sludge process with integrated settle and decant — eliminating secondary clarifiers and offering flexible nutrient removal (nitrogen and phosphorus) in a single basin.
Micro-bubble flotation for separation of oil, grease, suspended solids, and algae from industrial effluent and food processing wastewater — achieving TSS and oil removal >95% ahead of biological treatment.
UV, ozone, and sodium hypochlorite disinfection systems for final pathogen reduction — achieving 4-log removal of bacteria and viruses for safe discharge, irrigation, or industrial reuse with minimal chemical residual.
Belt filter presses, centrifuges, and screw presses for sludge dewatering to 20–35% dry solids — reducing disposal volume by >80%, with sludge digestion and biogas recovery options for larger plants.
Advanced wastewater treatment enabling industries to close the water loop — reducing freshwater intake and regulatory discharge risk.
Brackish water — with total dissolved solids (TDS) between 1,000 and 10,000 ppm — is found in groundwater wells, rivers in coastal areas, agricultural return flows, and industrial process streams. BEN Engineering designs BWRO systems that convert these impaired water sources into clean, potable or process-grade water with low energy consumption relative to seawater desalination.
Our BWRO systems range from compact commercial units (2–72 m³/day) to large industrial plants (up to 7,500 m³/day), incorporating multi-media filtration pre-treatment, antiscalant dosing, spiral-wound 8" RO membranes, and post-treatment remineralization — all under automated PLC control.
BWRO systems for deep well and borehole water with elevated iron, manganese, hardness, fluoride, or TDS — with iron/manganese removal pre-treatment and pH correction for potable water production.
High-flow industrial BWRO systems for boiler feed water, cooling tower make-up, process water, and rinsing applications — with conductivity monitoring, online SDI testing, and CIP (Clean-in-Place) membrane cleaning.
Pressure sand filters, dual-media filters, and cartridge filter housings removing particles >10 microns — protecting RO membranes and maintaining SDI (Silt Density Index) below 3 for reliable membrane performance.
Automated antiscalant, antifouling, and pH adjustment chemical dosing systems — preventing CaCO₃, CaSO₄, and BaSO₄ scaling on RO membranes, extending inter-cleaning intervals and reducing membrane replacement frequency.
pH correction, calcite contactor remineralization, and post-chlorination — raising RO permeate pH, adding beneficial minerals for drinking water palatability, and providing residual disinfectant for distribution systems.
PLC automation with touchscreen HMI, online water quality analyzers (conductivity, pH, TDS, turbidity, chlorine), remote monitoring via SCADA, and SMS/email alarm notification for unattended operation.
From 1,000 ppm brackish wells to 40,000 ppm open sea — RO membrane technology tailored to your source water and application.
Featured Technology — CHUNKE Containerized RO Systems
Seawater desalination via Reverse Osmosis (SWRO) converts open ocean water (TDS 20,000–40,000 ppm) into fresh drinking or process water — achieving up to 99% salt rejection with modern high-rejection spiral wound membranes and energy recovery devices. BEN Engineering deploys industrial SWRO systems from compact 2 m³/day units to large 2,500 m³/day plants.
For remote, mobile, and rapid-deployment applications, we highlight CHUNKE Water Treatment's Containerized RO Systems — pre-engineered, turnkey desalination units packaged in 10ft, 20ft, or 40ft shipping containers with full pre-treatment, post-treatment, PLC automation, and optional solar power — ready for immediate deployment anywhere in the world.
CHUNKE — Compact commercial & industrial desalination
CHUNKE — Large-scale industrial desalination
CHUNKE — Off-grid, renewable-powered freshwater
Containerized SWRO plants for coastal communities, islands, and remote villages without access to reliable freshwater — producing WHO-standard potable water from the sea in a self-contained, rapidly deployable unit.
Containerized SWRO for offshore oil & gas platforms, marine vessels, and floating facilities — producing fresh water for potable use, cooling systems, and drilling operations directly from seawater intake.
Rapid-deployment containerized desalination for disaster relief operations, mining camps, construction sites, and industrial remote worksites — globally shippable and operational within 24 hours of positioning on site.
CHUNKE containerized SWRO — factory-built, globally shipped, operational in 24 hours. From seawater to drinking water, anywhere.
Produced water — the water co-produced with oil and gas from hydrocarbon reservoirs — is the largest volume waste stream in the oil & gas industry. After separation from crude oil, produced water must be treated to strict injection quality specifications before being re-injected into disposal wells or hydrocarbon-bearing formations for Enhanced Oil Recovery (EOR).
BEN Engineering designs complete PWRI systems targeting oil-in-water <10 ppm, total suspended solids <5 ppm, and dissolved oxygen <10 ppb — preventing reservoir plugging, souring, and formation damage that would reduce injection rates and hydrocarbon recovery efficiency.
Compact, high-throughput hydrocyclone liners arranged in liner packs — using centrifugal force to separate dispersed oil droplets from produced water without moving parts, minimizing maintenance in offshore and remote locations.
Gas or air micro-bubble injection flotation vessels for polishing produced water after primary separation — reducing oil-in-water to <10 ppm and removing fine solids that hydrocyclones cannot separate effectively.
Crushed walnut shell media filters — the oil & gas industry standard for simultaneous oil and suspended solids removal to <5 ppm, with automatic backwash and media life >10 years in continuous service.
Vacuum deaeration towers reducing dissolved oxygen (DO) to <10 ppb — the critical threshold for suppressing both microbiologically influenced corrosion (MIC) and abiotic corrosion in carbon steel injection pipework and wellbores.
Integrated chemical injection skids for biocide, scale inhibitor, corrosion inhibitor, oxygen scavenger, and demulsifier — with metering pumps, day tanks, and flow-proportional dosing control to maintain injection water quality throughout the system.
Multi-stage centrifugal and horizontal plunger injection pumps rated for reservoir injection pressures — with variable speed drives, redundant standby units, automated start/stop on well-head pressure, and flow/pressure SCADA monitoring.
Whether it's municipal wastewater compliance, desalination for a remote site, or produced water disposal for an oil & gas field — our water treatment engineers will design the right solution for your application and budget.
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