Why Removing Calcite (Limestone) from Landfill Leachate Systems’ Lines Require Specialized Descaling Chemicals

Calcite clogging is a major problem in the industry. This type of scale is typically associated with pipes, heat exchangers or other water handling equipment in general industry but it is also true that landfill channels can also become completely clogged with limescale. Typically the problem is ignored in landfills until it is too late and leachate channel systems become clogged resulting in back-ups of leachate flow. Ignoring the problem when signs of clogging are starting to happen only creates bigger headaches down the road. 

When it comes to cleaning calcite deposits in your leachate lines, there’s no better option than an industrial strength, specialized chemical descaler.  According to Goodway’s Director of Liquid Solutions, Ray Field, “It’s well documented that an inhibited acid descaler is the product of choice in these cases.” The main advantage to a chemical descaler is its ability to permeate throughout the entire leachate collection piping system. Alternatives like high-pressure water jetting may reach inside the first 75 feet of piping, but after that the scale down the channel is so deep that water jetting can’t get to the worst areas of scale and becomes a pervasive problem within the entire leachate network in the landfill.

Other alternatives often employed are the use of commodity acids, for example, commodity grade & concentrated sulfuric acid. This can make a limescale headache even bigger. When adding sulfuric acid to calcite-clogged pipes, you’re going to end up turning your leachate lines into gypsum (or calcium sulfate). That’s a million times worse than even the worst limescale problem!

Power plants, and landfills hat may be associated with them, provide an additional challenge. Each involve massive amounts of water. What’s more, they share a symbiotic relationship with regard to methane gas. Power plants pay landfills for their methane gas. When their leachate lines become clogged, methane metering from the landfill slowly chokes off — along with the amount of revenue going to the landfill from the power plant. That’s a direct result of letting calcium carbonate build up and going unchecked in a landfill leachate collection system. 

Certain chemical descalers are not only safe, but also dissolve mineral deposits extremely fast. For example, Goodway’s Scalebreak Liquid Descaler is biodegradable and dissolves calcium, lime, rust and other deposits from your systems. This particular descaler can be applied in a variety of environments that contain different materials, including steel, brass, copper, plastic and rubber. Thanks to Goodway’s customizable capabilities, Scalebreak products include special formulas specifically for stainless steel, maritime applications and potable water systems. Goodway also offers alkaline neutralizing crystals which allows lowering descaling acidity to meet your needs.

 Not only will specialized chemical descalers make systems operate more efficiently in the here and now, they will also increase the overall life of your systems with efficient and non-interrupted operation.

In the end, removing calcite from leachate lines requires customizable chemical liquid solutions for descaling — and maybe an aspirin or two if you’ve put it off for a while.

Next Steps:

Smart Technology for Significant Chiller Energy Savings

In the average building, chillers account for between 35 and 50 percent of energy expenditures. Even minor adjustments in chiller efficiency can significantly lower the overall overhead of your business. Chiller efficiency and its relationship to the Internet of Things will be on everyone’s mind this weekend at the AHR Expo 2017 in Las Vegas, NV.

Magnetic bearing chillers are a quantum leap in chiller technology. They can save a single business $4 million over the life of the chiller in energy costs. These new chillers don’t require oil, or mechanical seals and gears. This ensures a far longer lifespan. At the same time, it can dramatically increase efficiency of the chiller. The U.S. Naval Facility in Newport, Rhode Island saw an energy savings of 65 percent when switching over to these new chillers. What’s more, you don’t have to change out the gaskets, bearings or seals. In terms of total cost of ownership and downtime, magnetic bearing chillers are far superior even to the chillers being producers 10-15 years ago.

Fortunately, it’s not necessary to reinvent the wheel to increase the efficiency of your chillers. The Internet of Things automates efficiency with very little upfront cost. Daikin has just released two chillers (one scroll, one screw) capable of natively monitoring energy consumption at the equipment level. This provides facility managers with a robust, streamlined solution to reduce overall energy costs without any headaches.

In fact, 2017 is set to be the year of the smart building. Internet of Things-enabled chillers will play a vital role in keeping building maintenance costs down and reducing environmental impact without skimping on keeping the building cool. What’s more, IoT-enabled chillers take the burden of scheduling maintenance off of the facilities manager. In some cases, the chillers will be able to order their own replacement parts and maintenance equipment before you even know there’s a problem. When off-site maintenance crews show up, they won’t need you to tell them what’s wrong with the chiller. They’ll already have a host of metrics to help them make the right repairs, helping to save you money on man hours and reduce downtime.

While the Internet of Things will provide significant improvements in efficiency, those won’t matter much with dirty chiller tubes. The RAM-PRO-XL Contractor simultaneously cleans your chiller tubes while preventing corrosion after cleaning. You know how quickly your tubes can start oxidizing and corroding during cleaning. The RAM-PRO-XL Contractor Chiller Tube Cleaner’s TubeGuard system makes sure that won’t happen. The tablet-based system uses biodegradable cleaners without sacrificing anything in the way of power.

Combine the latest advancements in connected technology with robust maintenance tools for optimum performance in your chillers. And if you happen to be attending the AHR Expo this year, make sure to check out our exhibit at Central Hall – C4328.

No Te Olvides: Goodway at AHR Expo Mexico

gtc_ahr_mexico

We came. We saw. We introduced over 10,879 HVAC&R industry professionals to some of the most advanced tube cleaners, cooling tower cleaning systems and coil cleaners that Goodway has to offer in Latin America, at this year’s AHR Expo Mexico. Thanks to everyone who stopped by booth 912 to witness what Goodway has to offer for easier, faster and more effective HVAC maintenance cleaning.

Stay tuned for 2018 AHR Expo Mexico in Mexico City, and for more information on Goodway’s innovative maintenance solutions, clic aqui.

 

 

Chemically Inclined: The Case for Clean Boilers

Boiler cleaning is something most companies don’t want to think about — if boilers are working within operational limits it’s often easier to keep up with smaller preventative maintenance (PM) tasks but put off a total chemical clean until performance starts to suffer. The problem? Once scale forms on boiler surfaces both fuel and efficiency losses quickly ramp up. Here’s a look at the cost of scale and the case for regular chemical cleaning.

Fuel Failures

What’s the real impact of scale on boiler efficiency? According to the Department of Energy (DoE), even “normal” scale at 1/32 inch thickness produced by low-pressure applications leads to a two percent fuel loss. In high pressure applications, the resulting iron plus silica deposits can result in fuel losses of up to seven percent. And while two percent may not sound like much, the EPA offers a helpful example: A firetube boiler using 450,000 MMBtu of fuel (at $8.00 per MMBtu) over 8000 hours per year with 1/32 inch of normal scale means a yearly operating cost spike of over $70,000.

As noted by research from NC State University, the reduced heat conductivity of scale leads to big problems in agriculture applications: If left untreated, ½ inch thick scale can lead to 70 percent increased fuel usage and significantly reduce overall boiler efficiency. Simply put? Even minimal scaling is a major problem.

Calculating Clean

Chemical cleanings aren’t cheap — and require you to shut down boiler operations for at least a day. So how do you know when it’s worth investing the time and money and when you can afford to wait?

As noted by ACHR News it’s a good idea to conduct regular visual inspections of boiler tubes to check for scale build-up. Regular monitoring of flue gas temperature can also indicate a problem — if the temperature rises when boiler load and excess air are held constant, scale is the likely culprit. Other reasons to consider a chemical clean include one or more system failures due to corrosion, or if you replace a significant amount (more than 10 percent) of your boiler tubing. According to Hartford Steam Boiler, evidence-based assessments are always the best way to determine chemical cleaning needs; while time-based cleanings have the benefit of simplicity and regularity they can’t take into account the myriad factors — such as water chemistry, frequency of startup, shutoff and blowdown — which contribute to scale formation.

Once you’ve identified scale, the next step is selecting a chemical solution and deploying the product. Best bet here? Draft and follow a solid set of best practices to ensure your chemical clean fully penetrates and dissolves scale before you flush and re-ignite boiler systems. Given the cost and time investment associated with chemical descaling, it’s worth doing right the first time.

Bottom line? Scale is expensive and ruins boiler efficiency. Rely on evidence-based methods to detect build-up and immediately deploy a full chemical descale if your boiler shows any signs of scale.

Next Steps:

Subscribe to our Seasonal HVAC System Efficiency Podcast Series. This time of year our focus is on Boilers, Chillers and Cooling Towers. Also, check out our descaler calculater!

Is Your Chiller Having a Heart Attack?

A heart attack begins when blood flow to a part of the heart muscle becomes blocked. A fatty material, called plaque, builds up on the walls of the coronary arteries.

iStock_000035380934SmallThose arteries supply blood and oxygen to the heart, making them essential for the heart to function properly. When the arteries become clogged a heart attack is most often the end result.

Your chiller could be experiencing an event similar to a heart attack.

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Clean Condenser Tubes = More Efficient Power Plants

Power plants are faced with a harsh, changing environment – they have to operate more efficiently, improve productivity as well as the reliability of their equipment, and save energy.

Cool Cooling TowersThe maintenance of condenser tubes is directly related to the performance and efficiency of power generation. Proper, routine maintenance of condenser tubes will result in more reliable, more efficient plant operation.

The way condensers operate is straightforward, notes Eric Fayard in Power magazine.

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A Brief History of Chiller Tube Cleaning Technologies

Over the years, we’ve been advocates for the regularly scheduled cleaning of chiller tubes. In response to that maintenance challenge, a variety of techniques have evolved with varying levels of efficiency and effectiveness.   Some of them are good and some of them, well…

Spare The Rod and Spoil The Worker

In years gone by, your distant predecessors cleaned chiller tubes with a brush attached to a metal rod.  It was cheap and reasonably simple to do, but it was nobody’s favorite job and took forever.   Later, the use of chemicals to clean chiller tubes became popular, and they proved to be effective.  In addition to being expensive, hazardous to use and hard to dispose of when the job was done they took your chiller off-line for up to 24 hours.

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