The Merrimac Water Treatment plant had three vertical pressure filters installed by Tonka in 1990 to remove iron and manganese and provide safe drinking water to the community. The 22 year old plant showed signs of aging and lacked the performance the town required for the current population and for future growth. The town hired Tonka to assist with the refurbishment improvements. 
A Blog on Water Treatment Issues and Solutions for the Municipal, Industrial and Government Water Markets.
Showing posts with label Maintenance Tip. Show all posts
Showing posts with label Maintenance Tip. Show all posts
Friday, October 5, 2012
Refurbishment at the Town of Merrimac, MA
By Jeff Emerson
The Merrimac Water Treatment plant had three vertical pressure filters installed by Tonka in 1990 to remove iron and manganese and provide safe drinking water to the community. The 22 year old plant showed signs of aging and lacked the performance the town required for the current population and for future growth. The town hired Tonka to assist with the refurbishment improvements.
The Merrimac Water Treatment plant had three vertical pressure filters installed by Tonka in 1990 to remove iron and manganese and provide safe drinking water to the community. The 22 year old plant showed signs of aging and lacked the performance the town required for the current population and for future growth. The town hired Tonka to assist with the refurbishment improvements. 
Friday, June 1, 2012
Make Backwash More Effective
by Rick Boyum
Tonka Equipment Company
Improve your overall filter performance and help reduce backwash frequency by optimizing every backwash.
Increased backwash frequency is recommended for:
About once a month:
Tonka Equipment Company
Increased backwash frequency is recommended for:
- Excessive headloss (debris buildup in media)
- Diminished effluent water quality
About once a month:
- Gather a sample of backwash water halfway through Simul-Wash™ or a backwash.
Friday, March 2, 2012
Filter Media Core Sampling
by Jeff Emerson
Tonka Equipment Company
Let’s take a look at how to assess the health of your filter media!
Filter media has a typical life expectancy of 10–15 years. Based on your raw water quality and filter maintenance, media life can be shorter or longer. Knowing the quality of your filter media will help to understand many performance and operational issues. Tonka provides media analysis for filters or softeners at any time. Taking an accurate core sample is a critical step in having your filter media analyzed for quality.
Tonka Equipment Company
Let’s take a look at how to assess the health of your filter media!Filter media has a typical life expectancy of 10–15 years. Based on your raw water quality and filter maintenance, media life can be shorter or longer. Knowing the quality of your filter media will help to understand many performance and operational issues. Tonka provides media analysis for filters or softeners at any time. Taking an accurate core sample is a critical step in having your filter media analyzed for quality.
Thursday, February 2, 2012
Airwash Blowers Operating Tips
by Dave Mielke
Field Service, Tonka Equipment Company
Moisture in your airwash blower? This is the Number 1 cause of blower failure.
The Sutorbilt or Turbotron blowers used by Tonka are large volume air supply blowers with pressure under 7 psi. These blowers are designed to run 24/7; however, when used as an airwash blower for the Simul-Wash™ cycle, their cycle duty is very infrequent and poses a different maintenance schedule. The Tonka airwash blower is always started and stopped "dead headed" to prevent water migration to the blower unit.
The following simple maintenance rules should provide you with many years of trouble free operation of your airwash blower:
Field Service, Tonka Equipment Company
Moisture in your airwash blower? This is the Number 1 cause of blower failure. The Sutorbilt or Turbotron blowers used by Tonka are large volume air supply blowers with pressure under 7 psi. These blowers are designed to run 24/7; however, when used as an airwash blower for the Simul-Wash™ cycle, their cycle duty is very infrequent and poses a different maintenance schedule. The Tonka airwash blower is always started and stopped "dead headed" to prevent water migration to the blower unit.
The following simple maintenance rules should provide you with many years of trouble free operation of your airwash blower:
Thursday, December 15, 2011
When Should Filter Media Be Cleaned?
by Dave Anderson
Customer Service, Tonka Equipment Company
Tonka has been asked this question by plant operators:
"Should I chemically clean my filter media?"
On the surface this sounds like something that should be beneficial, but it may not be right for your filter. This is especially true if you have Greensand™ or Ironman Sand™ filter media.
Greensand™ and Ironman Sand™ are coated with an active, beneficial coating of manganese dioxide which, when charged, oxidizes manganese as water flows through the filter. Unfortunately, chemicals that are used
to clean media of other precipitated compounds (calcium and magnesium hardness deposits, for instance) will remove the beneficial active coating on the Greensand™ or Ironman Sand™. For this reason Tonka strongly recommends against chemically cleaning filters that have Greensand™ or Ironman Sand™.
If you have concerns about media cleaning or your media not performing, please call our customer service department at 1-800-530-1887, and we’ll help you assess your needs and evaluate your filter operation.
Customer Service, Tonka Equipment Company
Tonka has been asked this question by plant operators: "Should I chemically clean my filter media?"
On the surface this sounds like something that should be beneficial, but it may not be right for your filter. This is especially true if you have Greensand™ or Ironman Sand™ filter media.
Greensand™ and Ironman Sand™ are coated with an active, beneficial coating of manganese dioxide which, when charged, oxidizes manganese as water flows through the filter. Unfortunately, chemicals that are used
to clean media of other precipitated compounds (calcium and magnesium hardness deposits, for instance) will remove the beneficial active coating on the Greensand™ or Ironman Sand™. For this reason Tonka strongly recommends against chemically cleaning filters that have Greensand™ or Ironman Sand™.
If you have concerns about media cleaning or your media not performing, please call our customer service department at 1-800-530-1887, and we’ll help you assess your needs and evaluate your filter operation.
Friday, March 25, 2011
Tuesday, December 14, 2010
Sometimes Air and Water Don’t Mix
by Steve Kari
Tonka Equipment Company
Moisture in compressed air systems can cause problems with pneumatically controlled devices, such as valve actuators and control solenoids.
Compressed air supply systems in this industry traditionally have been specified and supplied with refrigerated air dryer systems to remove excess moisture from the air. These systems rely on a refrigeration system to cool and condense moisture from the air stream.
We have learned through extensive investigation that these systems work most effectively if the application has a constant and steady air flow, such that the entire refrigeration system stays cold. We have therefore concluded that refrigerated air dryer systems are most appropriate for applications where air is consumed, such as systems where modulation valves or pressure
aerators are used.
Tonka Equipment Company
Moisture in compressed air systems can cause problems with pneumatically controlled devices, such as valve actuators and control solenoids. Compressed air supply systems in this industry traditionally have been specified and supplied with refrigerated air dryer systems to remove excess moisture from the air. These systems rely on a refrigeration system to cool and condense moisture from the air stream.
We have learned through extensive investigation that these systems work most effectively if the application has a constant and steady air flow, such that the entire refrigeration system stays cold. We have therefore concluded that refrigerated air dryer systems are most appropriate for applications where air is consumed, such as systems where modulation valves or pressure
aerators are used.
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