250+
STP automation projects
20+
years experienced team
OEM
trained specialists
24/7
emergency response

💧 sewage treatment plant automation

Control Panels · Sensors · Pumps · Valves · Blowers

  • ✓ STP Automation Control Panels – PLC, HMI, Relay Logic
  • ✓ Level Monitoring Systems – Ultrasonic, Hydrostatic, Float Switches
  • ✓ Pump Control Systems – Effluent, Sludge, Transfer Pumps
  • ✓ Aeration Control Systems – Blower Start/Stop, DO Control
  • ✓ Effluent Quality Monitoring – Turbidity, Chlorine, pH, TSS, BOD, COD
  • ✓ Alarm & Warning Systems – High Level, Pump Failure, Quality Alarms
  • ✓ Discharge Control Systems – Automatic Overboard, Holding Tank Transfer
  • ✓ MARPOL MEPC 227(64) Compliance – Effluent Quality Recording
  • ✓ USCG Type Approval Compliance – For US Waters Operation
  • ✓ Remote Monitoring & Control – Bridge, ECR, IAS Integration
  • ✓ Retrofit of Obsolete STP Controls – Modern PLC/HMI Upgrades
  • ✓ Integration with IAS, PMS, SCADA – Modbus, Profibus, Ethernet/IP

🏭 stp manufacturers & models

Evac · Hamworthy · Wärtsilä · Alfa Laval · Rochem · G&O

Western STP makes & models

  • ✓ Evac – Evac Evolution, Evac Pro, Evac Compact, Evac Marine STP, Evac Vacuum STP, Evac 2000, Evac 3000, Evac 6000 series
  • ✓ Hamworthy (Wärtsilä) – Super Trident, Super Trident S, Trident, Trident S, Membrane STP, Hamworthy STP 1000-5000 series
  • ✓ Wärtsilä – Wärtsilä STP, Wärtsilä Membrane STP, Wärtsilä Bio STP, Wärtsilä 20/26/32 STP series
  • ✓ Alfa Laval – Alfa Laval STP, PureSTP, Alfa Laval Membrane STP, Alfa Laval 1000-8000 series
  • ✓ Rochem – Rochem FM (Flow Motion), Rochem Marine STP, Rochem Membrane Bioreactor, Rochem FM 100-500 series
  • ✓ G&O (Green & Organic) – G&O 1500, G&O 3000, G&O 5000, G&O 10000 series
  • ✓ Dampa – Dampa 2000, Dampa 3000, Dampa 4000, Dampa Marine STP series
  • ✓ Headhunter – Headhunter Marine STP, Headhunter Macerator STP, Headhunter Evolution series
  • ✓ Taiko – Taiko STP, Taiko Kikai STP, Taiko Marine Sewage Treatment, Taiko 1000-5000 series
  • ✓ Jets Vacuum – Jets STP, Jets Vacuum STP, Jets Marine STP series
  • ✓ EMCO – EMCO STP, EMCO Marine STP, EMCO 500-3000 series
  • ✓ Jowa – Jowa STP, Jowa Marine Sewage Treatment, Jowa 1000-6000 series

Asian STP makes & models

  • ✓ Zhangjiagang Marine STP – ZG-STP series, ZG-MBR series, ZG-Compact series, ZG-1000 to ZG-10000
  • ✓ HANSUN (Jiangsu Hansun) – HANSUN STP, HANSUN MBR, HANSUN Biological STP, HS-STP series
  • ✓ Jiangsu Zhongyi – ZY-STP series, ZY-MBR, ZY-Marine Sewage Treatment, ZY-500 to ZY-8000
  • ✓ Zhejiang Haishun – HS-STP series, HS-MBR, HS-Compact STP, HS-1000 to HS-6000
  • ✓ Wuxi Delin – Delin STP, Delin Marine STP, DL-STP series
  • ✓ Nantong Marine – NT-STP series, NT-500 to NT-5000
  • ✓ Shandong Zhongshun – ZS-STP series, ZS-MBR series
  • ✓ Jiangsu Yixing – Yixing STP, YX-STP series
  • ✓ Wärtsilä (China) – locally manufactured STP under license
  • ✓ Evac (China) – Evac China manufactured STP models
  • ✓ Taiko (Japan) – Taiko STP Japanese domestic models
  • ✓ Headhunter (Asia) – Asian market specific STP models
  • ✓ Korea STP – various Korean manufactured STP systems

🔧 stp automation components

PLC · HMI · Sensors · Pumps · Valves · Blowers

Control & monitoring components

  • ✓ PLC controllers – Siemens S7-1200/1500, Mitsubishi FX, Omron, Allen-Bradley ControlLogix/CompactLogix
  • ✓ HMI touch panels – Siemens, Weintek, Pro-face, Beijer, ABB, Schneider
  • ✓ Level sensors – Ultrasonic (Vega, Sick, Endress+Hauser), Hydrostatic (Danfoss, Keller, Wika), Float switches
  • ✓ Pressure sensors – For pump monitoring (Wika, Danfoss, Keller, Yokogawa)
  • ✓ Flow meters – Electromagnetic, Ultrasonic (Krohne, Yokogawa, ABB, Endress+Hauser)
  • ✓ Temperature sensors – Pt100, Pt1000, Thermocouples for process monitoring
  • ✓ Dissolved Oxygen (DO) sensors – For aeration control (Endress+Hauser, Yokogawa, Hach)
  • ✓ Turbidity sensors – Effluent quality monitoring (Endress+Hauser, Hach, Yokogawa)
  • ✓ pH sensors – For chemical dosing control (Endress+Hauser, Yokogawa, Hach)
  • ✓ Chlorine residual sensors – For disinfection monitoring (Hach, Endress+Hauser)
  • ✓ TSS sensors – Total Suspended Solids monitoring (Endress+Hauser, Hach)
  • ✓ Conductivity sensors – For salinity monitoring

Pumps, valves & actuators

  • ✓ Effluent pumps – Grundfos, Flygt, Xylem, ITT, Lowara, Ebara
  • ✓ Sludge pumps – Progressive cavity (Mono, Netzsch, Seepex), Peristaltic (Watson-Marlow)
  • ✓ Transfer pumps – Centrifugal, Diaphragm pumps
  • ✓ Macerators / Grinders – For sewage inlet (JWC, Mono, Netzsch, Franklin Miller)
  • ✓ Aeration blowers – Robuschi, Kaeser, Atlas Copco, Gardner Denver, Aerzen
  • ✓ Motor starters – Direct online, Star-delta, Soft starters (ABB, Siemens, Schneider, Danfoss)
  • ✓ VFDs (Variable Frequency Drives) – For pump speed control (ABB, Danfoss, Siemens, Schneider)
  • ✓ Solenoid valves – For air/water control (ASCO, Burkert, Danfoss, Parker)
  • ✓ Motorized valves – For flow control (Siemens, Belimo, Rotork, AUMA)
  • ✓ Check valves – For discharge lines
  • ✓ Butterfly valves – Manual & actuated
  • ✓ Ball valves – For isolation
  • ✓ Diaphragm valves – For sludge lines
  • ✓ Chemical dosing pumps – For chlorine, flocculant, pH adjustment (Prominent, Grundfos, Seko, Milton Roy)

🎛️ stp control panels & hmi

PLC · Touchscreen · Relay Logic · Remote I/O

Control panel features

  • ✓ Automatic operation – Fully automatic cycle control with manual override
  • ✓ Pump alternation – Duty/standby rotation with run hours equalization
  • ✓ Level-based pump control – Start/stop at programmable setpoints
  • ✓ Aeration timer control – Intermittent aeration cycles with adjustable timing
  • ✓ DO-based aeration control – Automatic blower speed control via VFD
  • ✓ Chemical dosing control – Timer-based or flow-proportional dosing
  • ✓ Alarm annunciation – Buzzer, strobe light, HMI popup with acknowledge
  • ✓ Run hours counter – For maintenance scheduling and pump balancing
  • ✓ Fault history log – With time stamp for troubleshooting
  • ✓ Remote monitoring – Via Modbus, Profibus to IAS/PMS
  • ✓ Web-based monitoring – Optional remote access via LAN/Internet
  • ✓ Data logging – Effluent quality parameters for MARPOL compliance

HMI display pages

  • ✓ Process overview – Graphical P&ID with live sensor values
  • ✓ Tank levels – Collection tank, aeration tank, sludge tank, holding tank
  • ✓ Pump status – Running, stopped, fault, run hours
  • ✓ Blower status – Running hours, cycles, speed
  • ✓ Valve position – Open/closed status with position feedback
  • ✓ Sensor readings – DO, pH, turbidity, chlorine, TSS, temperature
  • ✓ Alarm summary – Active and historical alarms with reset
  • ✓ Trend graphs – Sensor trends over time (24h, 7d, 30d)
  • ✓ Parameter settings – Setpoints, timers, pump alternation, dosing rates
  • ✓ Discharge log – Record of overboard discharge events with quality data
  • ✓ MARPOL compliance report – Effluent quality data for port state control
  • ✓ Maintenance scheduler – Pump service, sensor calibration reminders

📋 marpol compliance & effluent monitoring

MEPC 227(64) · USCG · Effluent Quality · Discharge Control

Effluent quality parameters & limits

  • ✓ Fecal Coliform – MEPC 227(64) limit: < 250 cfu/100ml (thermotolerant)
  • ✓ TSS (Total Suspended Solids) – MEPC limit: < 50 mg/l for new plants
  • ✓ BOD5 (Biochemical Oxygen Demand) – MEPC limit: < 50 mg/l
  • ✓ COD (Chemical Oxygen Demand) – MEPC limit: < 250 mg/l
  • ✓ pH – 6.0 to 8.5 (USCG requirement)
  • ✓ Chlorine residual – < 0.5 mg/l for USCG
  • ✓ Turbidity – Real-time effluent clarity (NTU)
  • ✓ Temperature – Discharge temperature monitoring
  • ✓ Nitrogen / Phosphorus – For special areas (Baltic, etc.)
  • ✓ Oil & Grease – For combined treatment systems

Compliance automation features

  • ✓ Continuous effluent quality monitoring – Real-time sensors for turbidity, chlorine, pH
  • ✓ Automatic discharge interlock – Prevent overboard discharge if quality fails
  • ✓ Discharge event logging – Date, time, GPS position, quality parameters
  • ✓ Alarm on quality exceedance – Visual & audible alarm, IAS notification
  • ✓ Recirculation mode – Automatic return to aeration if quality poor
  • ✓ Holding tank transfer – Automatic transfer to holding tank on quality failure
  • ✓ USCG compliance reporting – For vessels operating in US waters (Alaska, Great Lakes, etc.)
  • ✓ MEPC 227(64) certification – Type approval support for new installations
  • ✓ Data logging for port state control – Minimum 60 days storage requirement
  • ✓ Integration with VDR (Voyage Data Recorder) – For incident investigation
  • ✓ Automatic sampling system – For lab analysis verification
  • ✓ Certificate of compliance printing – On-demand for port inspections

🔌 ias, pms & bridge integration

Remote Monitoring · Alarms · Control · Data Logging

IAS integration

  • ✓ Kongsberg K-Chief 700/600/500 – STP monitoring & alarm integration
  • ✓ Norcontrol BridgeLine, NautoScan, DataChief – STP status display on bridge
  • ✓ Valmet DNA, DAMATIC, AC 870 – STP automation integration
  • ✓ ABB Ability, 800xA, AC 800M – STP monitoring & remote control
  • ✓ Siemens PCS 7, WinCC, S7-1500 – With STP controller integration
  • ✓ Rockwell FactoryTalk, ControlLogix – STP integration with plant automation
  • ✓ Mitsubishi MELSEC iQ-R – With CC-Link IE integration
  • ✓ Schneider Electric – Modicon M580, SCADA integration
  • ✓ Lyngsø Marine – STP monitoring integration

Communication protocols

  • ✓ Modbus RTU/TCP – Most common protocol for STP to IAS
  • ✓ Profibus DP/PA – For Siemens automation systems
  • ✓ Profinet – Industrial Ethernet for Siemens
  • ✓ EtherNet/IP – For Rockwell/Allen-Bradley systems
  • ✓ CANopen – For decentralized I/O and sensors
  • ✓ DeviceNet – For legacy device integration
  • ✓ OPC DA / OPC UA – For SCADA and third-party integration
  • ✓ BACnet – For building management systems on passenger vessels
  • ✓ NMEA 2000 / NMEA 0183 – For bridge display integration
  • ✓ 4-20mA analog signals – Direct to PLC for critical parameters
  • ✓ Digital I/O – For alarm status and control signals
  • ✓ RS485/RS232/RS422 – Serial communication for older systems
  • ✓ Ethernet/IP – For remote HMI access via ship LAN
  • ✓ MQTT / IoT protocols – For cloud-based fleet monitoring

🔄 stp automation retrofit & upgrade

Modernization · Legacy Controls · Diagnostics

  • ✓ Legacy STP control panel replacement – Obsolete relay logic to modern PLC/HMI
  • ✓ Evac STP control upgrade – Evolution, Pro, Compact series modernization
  • ✓ Hamworthy Super Trident automation retrofit – New PLC, HMI, sensors, communication
  • ✓ Wärtsilä STP control system upgrade – Latest automation with remote monitoring
  • ✓ Alfa Laval STP automation retrofit – PureSTP, Membrane STP control upgrades
  • ✓ Rochem FM STP control modernization – Flow Motion series PLC/HMI replacement
  • ✓ Sensor replacement & calibration – Level, DO, pH, turbidity, chlorine, TSS
  • ✓ Pump control upgrade – VFD installation, soft starters, pump alternation logic
  • ✓ Aeration control optimization – DO-based control instead of fixed timer
  • ✓ Effluent quality monitoring addition – New sensors, data logging, alarm integration
  • ✓ MARPOL compliance upgrade – To meet MEPC 227(64) and USCG requirements
  • ✓ Remote monitoring addition – Modbus/Profinet to IAS, bridge display integration
  • ✓ Alarm system upgrade – New annunciator, integration with IAS/PMS
  • ✓ STP automation troubleshooting – On-site diagnostics, sensor validation, logic verification
  • ✓ Spare parts supply – For all major STP makes (Evac, Hamworthy, Wärtsilä, Alfa Laval, Rochem, G&O, Dampa, Headhunter, Taiko, Zhangjiagang, HANSUN, Jiangsu Zhongyi, Zhejiang Haishun)
  • ✓ Class approval support – ABS, DNV, LR, BV, RINA, NK, KR, CCS, USCG
  • ✓ Control panel rewiring & documentation – New schematics, manuals, software backups
  • ✓ PLC program modification & optimization – For improved performance
  • ✓ HMI graphic upgrade – Modern touchscreen interface with trending
  • ✓ Data logging system addition – For trend analysis and predictive maintenance

🌍 global stp automation service coverage

Vessels We Serve Worldwide

Vessel Types

  • ✓ VLCC / ULCC / Suezmax / Aframax Tankers
  • ✓ Product / Chemical / Bitumen Tankers
  • ✓ LNG / LPG / LNGC / LPGC Carriers
  • ✓ Capesize / Panamax / Supramax / Handymax Bulk Carriers
  • ✓ Post-Panamax / Neo-Panamax / ULCS Container Vessels
  • ✓ PSV / AHTS / OSCV / MPSV / DSV / CSV / PLSV
  • ✓ Jack-up / Semi-sub / Drillships / MODU
  • ✓ FPSO / FSO / FLNG / FSRU / FSU
  • ✓ Ro-Ro / PCTC / RoPax / Car Carriers / Train Ferries
  • ✓ Cruise Ships / Passenger Ferries / Expedition Vessels
  • ✓ Mega Yachts / Superyachts / Luxury Yachts
  • ✓ Naval Vessels / Frigates / Corvettes / OPVs / Patrol Boats
  • ✓ Dredgers / Heavy Lift Vessels / Cable Layers / Pipe Layers
  • ✓ Research Vessels / Icebreakers / Polar Class
  • ✓ Tugs / Workboats / Pilot Boats / Barges
  • ✓ Fishing Vessels / Trawlers / Factory Ships
  • ✓ Floating Docks / Accommodation Barges

Global Service Locations

  • ✓ UAE – Dubai, Abu Dhabi, Fujairah, Sharjah, Ras Al Khaimah, Jebel Ali, Khor Fakkan
  • ✓ India – Mumbai, Kochi, Chennai, Kandla, Vizag, Paradip, Kolkata, Mundra, Pipavav, Mangalore, Tuticorin, Goa
  • ✓ Singapore – Jurong, Tuas, Sembawang, Keppel, Tanjong Pagar, Changi, Pasir Panjang
  • ✓ Middle East – Qatar (Doha, Ras Laffan, Mesaieed), Saudi (Dammam, Jeddah, Yanbu, Jubail, Ras Tanura), Kuwait, Bahrain, Oman (Sohar, Duqm, Muscat, Salalah), Iraq (Umm Qasr)
  • ✓ Europe – Rotterdam, Hamburg, Bremen, Antwerp, Piraeus, Marseille, Genoa, Lisbon, London, Gdansk, Oslo, Bergen, Gothenburg, Copenhagen, Hamburg, Bremerhaven, Amsterdam
  • ✓ Asia – South Korea (Busan, Ulsan, Geoje, Okpo, Mokpo, Pohang), China (Shanghai, Ningbo, Hong Kong, Guangzhou, Qingdao, Tianjin, Dalian, Shenzhen, Xiamen, Zhoushan), Japan (Yokohama, Kobe, Nagasaki, Imabari, Tokyo, Osaka, Nagoya), Taiwan (Kaohsiung, Keelung)
  • ✓ Africa – Durban, Cape Town, Lagos, Mombasa, Port Said, Alexandria, Djibouti, Walvis Bay, Luanda, Abidjan, Dakar
  • ✓ Americas – Houston, New Orleans, Miami, Rio de Janeiro, Santos, Panama, Vancouver, Montreal, Los Angeles, Seattle, San Francisco, New York, Norfolk, Baltimore
  • ✓ Australia – Sydney, Melbourne, Brisbane, Fremantle, Port Hedland, Darwin, Gladstone, Newcastle
  • ✓ Northern Europe – Stockholm, Helsinki, Riga, Klaipeda, St. Petersburg
  • ✓ Mediterranean – Barcelona, Naples, Istanbul, Izmir, Haifa
  • ✓ Worldwide – All major ports and shipyards, 24/7 emergency response

💧 24/7 sewage treatment plant automation support

Need Sewage Treatment Plant Automation
Service, Retrofit or Upgrade?

Our experienced STP automation specialists (20+ years) provide complete troubleshooting, repair, calibration, retrofitting, and integration services for all marine sewage treatment plant automation systems – Control Panels, Level Monitoring, Aeration Control, Effluent Quality Sensors, MARPOL MEPC 227(64) Compliance, and Integration with IAS/PMS. Available 24/7 worldwide for emergency response. Class approved solutions for all major STP makes including Evac, Hamworthy, Wärtsilä, Alfa Laval, Rochem, G&O, Dampa, Headhunter, Taiko, Zhangjiagang, HANSUN and more.

Email: service@seanav.org | Web: www.seanav.org | 24/7 Emergency: +971 50 123 4567