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Dosing Management

Monoclor® RCS

About
 

Monoclor®RCS  Residual Control System

Constant and Reliable. That's Monoclor® RCS.

Monoclor® RCS systems are designed to take the expense and complexity out of managing chloramine residual levels in distribution networks.  By automatically managing chloramine residual levels in strategically located reservoirs, utilities no longer have to engage in costly procedures such as chlorinating/super-chlorinating tanks, emergency/manual tank boosting, reactionary testing, and aggressive tank cycling.  

Monoclor® RCS is a control system that maintains free chlorine or chloramine residual within the reservoir in three ways: 1) by creating a homogeneous mixture through active mixing, 2) by applying chemicals rationally and predictably, and 3) by monitoring the response with control logic in real-time.

What Makes Monoclor®RCS Different

Managing water quality in drinking water distribution system is challenging since the chlorine or chloramine used is affected and acted upon by forces within the water, piping and tanks themselves. chlorine or chloramine, is not persistent. Water quality degrades as the water ages in the distribution system. Operators must carefully regulate residuals while reducing the potential for disinfection byproduct formation. Traditional tools to manage disinfectant levels in the distribution system can be costly, time-consuming, most times short lived.  They are often described as short-term bandages that do not solve the root problem.  Monoclor® RCS allows utilities to address this root problem by:

  • Proactively controlling the chlorine/chloramine levels in tanks to provide a better overall distribution system residual which will help to prevent nitrification issues and coliform positives.
  • Significantly reducing the need for wasteful and costly flushing, tank cycling/dumping, manual tank dosing, and tank climbing.
  • Allows operators to toggle between chloramine and free chlorine modes as needed 
  • Is fully capable of SCADA integration and remote monitoring
  • Has over 200 installations nationwide in tanks ranging in size from 100,000 gallons to over 50 million gallons

Monoclor® RCS systems automatically maintain chloramine residual set‐points in water storage tanks eliminating nitrification, coliform “hits”, unnecessary tank cycling, and manual tank boosting.

Monoclor RCS System Diagram clear background

The Right Chemical at The Right Time

Powerful tank mixing is a key part of the Monoclor®RCS water quality solution.  Our system utilizes the appropriately sized mixer to rapidly blend disinfectant into the entire tank volume.

The Monoclor® RCS system then samples the homogenized water and determines the appropriate chemical dosing strategy based on the disinfectant levels present in the reservoir. 

Sophisticated control algorithms utilize real‐time tank sample data and automatically calculate the dosing of chemical for the particular tank based on the desired set‐point and tank’s position on the breakpoint curve.  Reliable chemical dosing skids ensure precise ammonia and chlorine dosing into the Monoclor® RCS powerful in‐tank mixing zone.

By dosing the right chemical at the right time into a completely mixed tank, the Monoclor® RCS system quickly reaches and maintains the desired residual set‐point.

Continually Monitor Tank Chemistry with Chemlocker® Reservoir Dosing Station

Chemlocker® reservoir dosing station are designed to take the expense and complexity out of managing disinfectant residual levels in distribution networks.  By automatically monitoring disinfectant residual levels in strategically located reservoirs, utilities no longer have to frantically react to declining residual levels with emergency/manual tank boosting, frantic re‐testing and aggressive tank cycling.  

The Chemlocker® system includes a sophisticated real‐time analytical tool that collects and transmits tank sample data (pH, total chlorine and ORP) to enable timely operator intervention – before an emergency occurs.  Once an operator decides that tank boosting is required, the chemical reagents are introduced into the tank via a convenient venturi driven hose connection at the ChemLocker® panel.  Powerful tank mixing ensures that the chemical reagents are immediately mixed to start boosting the tank residual level.  

The Chemlocker® system provides operators and water quality professionals with a simple water quality management tool that can aid disinfectant residual management by providing both reservoir residual level assessment and chemical dosing of hypochlorite and or ammonia to reassert control to a free-chlorine or a chloramine disinfectant regime.

Chemlocker

The Chemlocker® reservoir dosing station replaces the dangerous practice of manual dosing with buckets of bleach hauled up ladders or tank stairways. When complemented with a powerful mixing and in-tank chemical introduction tool, Chemlocker® is unbeatable in managing distribution system water quality.

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Backed by over 10 years of experience in improving distribution network water quality, the Monoclor® RCS system has 100+ installations nationwide in tanks ranging in size from 100,000 gallons to over 50 million gallons. 

Four Ways Monoclor® RCS Maintains Disinfectant Residual Set-Points: Mix, Monitor, Intervene and Manage

By combining powerful tank mixing, advanced water quality sensors, an automated chemical dosing system and feedback loop, the Monoclor® RCS integrates four discrete functions to maintain disinfectant residual set-points. 

MIX   

Achieve complete disinfection homogenization, maintain chemical and thermal equilibrium.

MONITOR

Analyze and respond to changing tank conditions in real time.

INTERVENE 

Dose disinfectant to achieve the desired disinfectant residual set-point.

MANAGE

Monitor tank equilibrium in real-time to automatically respond to changing tank conditions.

MONOCLOR® RCS
 
Product Information
System Overview

Monoclor RCS System Diagram

How Monoclor® RCS System Achieves and Maintains Tank Equilibrium

The Monoclor® RCS system utilizes a powerful active mixer to rapidly blend disinfectant into the entire tank volume. The Monoclor® RCS system then samples the homogenized water and determines the appropriate chemical dosing strategy based on the disinfectant levels present in the reservoir. By dosing the right chemical at the right time into a completely mixed tank, the Monoclor® RCS system quickly reaches and maintains the desired residual set‐point.

How do PAX Mixers transfer energy leading to homogeneous tank conditions?

PAX mixers transfer motive energy to the mass of water in the reservoir, placing it in motion and ensuring a fully homogeneous condition.

In addition to removing temperature stratification which can hinder consistent disinfectant residual distribution, a fully mixed tank ensures accurate process feedback control in the dynamic environment of a water storage tank.

Chemical injection occurs in the high energy mixing zone allowing for complete mixing and distribution of the applied chemicals.

How Chlorine Boosting and Chloramine Formation Work

If the disinfectant residual drops below a predetermined set point, chlorine only or ammonia is dosed into the reservoir. A Patented algorithm assesses the position of the homogeneous tank chemistry on the breakpoint curve and makes the correct dosing decisions. The Monoclor® RCS process is completely compatible with gas chlorine, bulk hypochlorite and on-site generated sodium hypochlorite. When chloramine delivery is a requirement, liquid ammonium sulphate (LAS) is the feedstock of choice.

Breakpoint Curve

 

Monoclor RCS breakpoint curve graph

The Chemlocker® System

The Chemlocker® system includes a sophisticated real‐time analytical tool that collects and transmits tank sample data (pH, total chlorine and ORP) to enable timely operator intervention – before an emergency occurs.  Once an operator decides that tank boosting is desired, the chemical reagents are introduced into the tank via a convenient venturi driven hose connection at the Chemlocker® panel.  Powerful tank mixing ensures that the chemical reagents are immediately mixed to start boosting the tank residual level.  

The Chemlocker® Reservoir Dosing Station provides operators and water quality professionals with a simple water quality management tool that can aid disinfectant residual management by providing both reservoir residual level assessment and chemical dosing of hypochlorite and or ammonia to reassert control to a free-chlorine or a chloramine disinfectant regime.

Total Chlorine Sampling and Analysis

  • An integrated total chlorine analyzer provides dynamic tank residual analysis based on real-time sampling from the tank itself.
  • Data availability for the overall network SCADA system.

Chemical Feed

  • Simple eductor system for precise chemical injection of both ammonia (in the case of chloramine boosting) and hypochlorite (chlorine).
  • A booster pump is optional where a high pressure water source is unavailable on-site.
  • The analog flow information from the tank mixer is available locally at the Chemlocker® panel and also via SCADA for remote monitoring. This flow information provides vital feedback to the operator so as to preclude the possibility of chemical addition without proper simultaneous mixing and dispersion.
Smartboost® Systems

Smartboost® Free Chlorine Boosting Systems utilize water storage assets as convenient and controllable intervention points for managing distribution network chlorine levels.

Similar to how the Monoclor® RCS chloramine management system maintains a constant disinfectant residual set-point in water tanks, Smartboost® systems are used with distribution systems that utilize free chlorine residuals.

Benefits of Monoclor® RCS
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Powerful Mixing for Rapid  Disinfectant Homogenization

 

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Integrates with Liquid, Gas, or OSHG

 

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Real-Time Sampling and Analysis

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Data Logging and Remote Monitoring

 

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Safe Introduction of Chemicals

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Mobile Systems Available for Disaster Preparedness

 

Featured Installations
city of colony texas water

The Colony

Location:  The Colony, Texas

Goal: Reduce the complexity of managing multiple water sources, maintain disinfectant residual levels and reduce costly flushing.

Solution: A Monoclor® RCS system featuring and continuous on-line water analysis using a smart control system
 
Outcome: The introduction of the Monoclor® RCS system allowed operators to eliminate the need to flush water and take the tank offline to make manual changes to the water quality. This not only reduced costs to manage the tanks, but also didn’t require staff to come in for repairs and maintenance as frequently as before.
City of Milpitas

City of Milpitas

Location:  Milpitas, California

Goal: Manage disinfectant residual levels without the need for frequent testing, manual boosting and tank cycling

Solution: A Monoclor® RCS system and a Microclor® On-Site Hypochlorite Generation System 
 
Outcome: The Monoclor® RCS system was able to efficiently and automatically analyze and adjust the residual levels to the desired set point chosen by the City operator, which in turn  helped Milpitas achieve their desired water quality standard goals.  The team also saw a 70-80% reduction in energy use as a result of the new system.
DeSoto with RCS mobile unit

City of DeSoto

Location:  DeSoto, Texas

Goal: Reduce flushing; maintain acceptable disinfectant residual levels

Solution: A Monoclor® RCS system, tank mixing and continuous on-line water analysis using a smart control system
 
Outcome: Within six months of putting the Monoclor® RCS system into operation, DeSoto Water Utilities flush 90% less water - saving operators time and valuable purchased water. They were also able to maintain consistent disinfectant residual levels in compliance with water quality regulations even during the construction of their new buildings due to the two mobile Monoclor® RCS trailers.

"We used to struggle with water age in this part of our system, but the RCS has made our water age problems essentially go bye-bye.

It’s like a little treatment plant. We’re controlling the water."

Tom Barrack, Water Plant Superintendent
Loudoun Water, Virginia
MONOCLOR® RCS
 
Checks All The Boxes

 

 
 

Targeted disinfectant control without a treatment plant upgrade.

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Built-in multi-operational fail safes, alarm redundancy.

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Quick reaction to imported water upsets quality changes.

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Reduces flushing and nitrification events.

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Ideal for retail systems without treatment capabilities.

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Provides dosing option for wholesalers with problematic zones.

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"Ever since we installed the Monoclor® RCS, I have much more confidence that we can maintain a meaningful residual throughout our distribution system."

Allan McDonald, Manager of Utility Services
City of DeSoto, Texas
Monoclor® RCS
 
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Brochure

 

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Data Sheets

 

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Case Studies

 

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