ZSI employs only engineers and programmers who are keen on being the best in process control and automation.

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scada

From water and recycled water systems with a single node to multi-node systems, ZSI can design and provide 24/7/365 support so you don't have to worry.

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lift & pump

From sewer lift stations and recycled pump stations to well and water distribution systems, ZSI can design your system and provide maintenance services.

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aeration & anoxic Control

Whether your ready to begin biological nutrient removal or just exploring automating your aeration system, we can help you work with your existing infrastructure.

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strategy & stability

Has your system ever worked correctly?  Do you have ideas on how to make it better, but need the technical expertise to do so?

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fabrication

We build to comply with your specifications in the shop or we can retrofit your existing panels in the field.

 
Banner Courtesy of Google, Data SIO, NOAA, U.S. Navy, NGA, GEBCO, Data MBARI

 

Intuitive Design for Ease of Use

 

No two supervisory control and data acquisition system are the same; however, all operations personnel want the same criteria - functionality, security, data trending, reporting and of course accurate graphical representation of the process.  ZSI strives to ensure each system meets and exceeds the needs and expectations of those who use it, and strives to keep systems up-to-date with industry standards and current security requirements and enhancements such as biometrics.

 

 
Municipal Water Distribution and Recycled Water Collection Systems

Municipal Water Distribution and Recycled Water Collection Systems

Satellite Image of Recycled Water Pump Stations & Reservoirs for Vineyards & Farmland Irrigation

Satellite Image of Recycled Water Pump Stations & Reservoirs for Vineyards & Farmland Irrigation

Recycled Water Pump Station and Reservoirs

Recycled Water Pump Station and Reservoirs

UV Disinfection System (below) & Overview and Trends (above)

UV Disinfection System (below) & Overview and Trends (above)

The Right Tool for the Right Job

 

Whatever the process requirement, having a plan in the form of a simple diagram, a road map, depicting the appropriate strategy in a single P&ID image (below) that can be conveyed to management in addition to operations and maintenance personnel is crucial to success.  Incorporating the strategy into the graphical image used daily by facility personnel (above) reinforces the intended functionality and capability.

 

 

From Concept...

To Operation...


To Operation...

Not yet tuned for the control strategy designed, the system is not stable.  Zoomed in.

Not yet tuned for the control strategy designed, the system is not stable.  Zoomed in.

A properly tuned response demonstrated by inducing a predetermined suitable disruption in the PV to test for system stability.  Zoomed out.

A properly tuned response demonstrated by inducing a predetermined suitable disruption in the PV to test for system stability.  Zoomed out.

and Stability.

Courtesy of scwa

Courtesy of scwa

 

Proprietary Systems

ZSI is experienced in maintaining, troubleshooting, upgrading and improving a variety of high end complex control strategy systems including, but not limited to:

Aria ™ AP Microfiltration Membrane System by Pall Corporation

AquaDisk® System by Aqua-Aerobic, Inc.

Biolac® System by Parkson Corporation

EBS Filters by Amiad Filtration Systems Ltd. 

FKC Screw Press

 

Enhanced Biological Processing

 

Bugs, technically known as autotrophic bacteria are perhaps the most critical organically occurring step in the process of wastewater recycling.  To survive, bugs need air, but they only need enough to thrive, so anything more is too much air and a big waste of energy.  Also, hidden within the process is the potential to naturally remove a majority of the unwanted nitrates and nitrites produced during this process (aka BNR), which can be discovered with some facility specific analysis and modest changes to the typical aeration control strategy.

 

 
Process P&ID Overview on Local Control Panel

Process P&ID Overview on Local Control Panel

Process P&ID Overview on SCADA

Process P&ID Overview on SCADA

Oxygen Reduction Potential Instrumentation

Oxygen Reduction Potential Instrumentation

Aeration Basin Valve & Flowmeter

Aeration Basin Valve & Flowmeter

Suction Valves & Blowers

Suction Valves & Blowers

Panel with Programmable Logic Controller

Panel with Programmable Logic Controller

Regardless of your plant's particular design, we can help you with biological nutrient removal (BNR).

Regardless of your plant's particular design, we can help you with biological nutrient removal (BNR).

Matching HMI & OIU Apps with Field Conditions

 

Operations personnel are best served by interfaces which not only provide them with functionality compliant with the design specifications, but truly represent the equipment configuration and system operation.  Incorporating best practices such as a maximum of 3 steps to perform any given operation and trending which provide historical insight are essential to a well accepted and run system.

 

 

cowS4on.JPG
 

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Distribution System Interconnection & Pump Station System

Original Design andRetrofits

 

Need modifications to your control panel in the field while the process is still operational?  We can do it.  Need a UL panel to comply with your design specifications.  We can do it.  MCCs, Switchgear, NEMA 4X / 4P, pedestals and even submersible enclosures. Whatever your panel fabrication needs are, we can do it.

 

 
Drawings for retrofitting 1970s console with Quantum RIO drops.

Drawings for retrofitting 1970s console with Quantum RIO drops.

Components to be installed in submersible CP

Components to be installed in submersible CP

Typical MCC line up

Typical MCC line up

Duplex pump station with fiber optic floats

Duplex pump station with fiber optic floats

Clean, functional and easy to maintain.

Clean, functional and easy to maintain.

Field Retrofit Before

Field Retrofit
Before

Field Retrofit After

Field Retrofit
After

Redundant & RIO Networks

Redundant & RIO Networks

Process Controller Interfaced with PLC

Process Controller Interfaced with PLC

Field pedestal with Electrical Service Entrance

Field pedestal with Electrical Service Entrance