Wastewater Treatment · Process Monitoring

Full-process sensing,
data-driven efficiency

Monitor influent, biological treatment, clarification, advanced treatment, sludge handling and effluent in one system. HKI combines reliable sensors, process logic and SCADA integration to support stable compliance, lower energy use and smarter dosing.

Full process  Influent to effluentReal-time  DO · MLSS · ORP · COD · N · PSCADA ready  Modbus / 4-20 mA / HJ 21210-20%  Typical chemical saving
9Key process sections
25+Detection parameters
15-30%Potential aeration saving
24/7Online visibility
Request a solutionView products
Aeration basin · AT-03LIVE
Dissolved oxygen DO2.48mg/L
Mixed liquor solids MLSS3,420mg/L
Oxidation-reduction ORP-86mV
Effluent COD COD18.5mg/L
Updated within 1 min · Aeration demand control · Effluent within limits
HONG KONGCore technology
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TAIWANAlgorithms
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ZHUHAIManufacturing
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CHINADelivery and O&M
Solution overview

One monitoring system for the whole plant

Give operators a live view of water quality, hydraulic load, process conditions and equipment status from influent to final discharge.

Deploy the right combination of DO, ORP, MLSS, pH, COD, ammonia nitrogen, total phosphorus, flow and level instruments at each process node. All devices use standard protocols and can feed an existing SCADA or digital water platform.

Real-time trends reveal process changes early. Rules and models then support aeration adjustment, chemical dosing, abnormality alarms, compliance reporting and maintenance planning.

Recommended products

Sensors and analyzers matched to each process

Build a practical configuration from field sensors to online analyzers and control terminals.

M200-DOAeration control

Fluorescent Dissolved Oxygen Sensor

  • Maintenance-free fluorescent measurement with automatic temperature compensation.
  • Stable long-term operation in activated sludge and high-moisture environments.
  • RS485 Modbus and 4-20 mA options for direct control feedback.
Applications

Aeration basins · SBR · MBR · Reuse treatment

M200-MLSSSludge process control

Suspended Solids / MLSS Sensor

  • Optical measurement for mixed liquor and return sludge concentration.
  • Supports sludge age, return ratio and wasting control.
  • Self-cleaning option reduces fouling and service visits.
Applications

Aeration · Secondary clarifier · Sludge thickening

M200-NNutrient removal

Ammonia Nitrogen and ORP Monitoring

  • Continuous ammonia and ORP trends show nitrification and denitrification performance.
  • Enables carbon-source and internal-recycle adjustment.
  • Works with pH, DO and flow data for stable nutrient removal.
Applications

Anoxic zones · Biological nutrient removal · Effluent protection

ZY5510Compliance monitoring

Multi-Parameter Online Analyzer

  • Configurable COD, ammonia, total phosphorus, total nitrogen, pH and SS channels.
  • Automatic sampling and data retention for exceedance events.
  • Modbus, 4-20 mA and HJ 212 integration for plant and regulatory platforms.
Applications

Final effluent · Upgrade projects · Compliance reporting

Plant integrationProcess, energy and maintenance data

Process Optimization and SCADA Integration

  • Bring sensors, analyzers, flow meters and equipment states into one data model.
  • Use rules to adjust aeration, dosing and sludge return according to load.
  • Keep alarms, work orders, reports and performance review in one workflow.
Applications

Existing plant retrofit · Group water platforms · Remote O&M

System architecture

A data loop from field instruments to optimization

Use standard interfaces to connect process data, plant controls and management decisions.

Layer 03 · PlatformOptimization and operations platform
Process trendsAlarm centerEnergy and chemical KPIsReportsO&M work orders
↓ Standard data interfaces
Layer 02 · ControlPlant SCADA and edge control
Modbus RTU / TCP4-20 mAHJ 212Local buffering
↑ Live process data
Layer 01 · SensingProcess and compliance instruments
DO / ORP / pHMLSS / turbidityCOD / ammonia / N / PFlow and levelAutomatic sampler
Engineering advantages

Designed for stable operation and lower cost

Full-process visibility

  • One viewSee hydraulic load, water quality and equipment state together.
  • Traceable dataMinute-level trends make process changes easy to review.

Precise aeration

  • Demand-based controlUse DO, ammonia and ORP to adjust air supply.
  • Energy savingReduce over-aeration while protecting effluent quality.

Smarter dosing

  • Chemical linkageMatch carbon, coagulant and disinfectant to load.
  • Stable operationTrack tank level and dosing flow before a shortage occurs.

Easy integration

  • Open protocolsConnect to existing SCADA and group platforms.
  • Simple maintenancePlug-in sensors and remote diagnostics shorten service time.
Build your plan

Optimize your wastewater process

Share your plant capacity, process route and target parameters. Our engineers will return a recommended configuration, integration plan and quotation within 24 hours.

Contact HKI
Phone139 2696 7285
AddressNo. 40, Jinfeng West Road, National Hi-Tech Zone, Zhuhai, Guangdong