Friday, May 19, 2023

Importance of Wastewater Flowmeter Calibration

Wastewater Flowmeter Calibration

Wastewater Flowmeter Calibration

Wastewater management is a critical aspect of maintaining environmental sustainability and public health. To effectively manage and treat wastewater, accurate measurement of flow rates is essential. 

Wastewater flowmeters play a crucial role in this process by providing real-time data on the volume and velocity of wastewater flowing through treatment systems. However, like any measurement instrument, flowmeters require calibration to ensure their accuracy and reliability. 

In this article, we will delve into the importance of wastewater flowmeter calibration, its benefits, and the calibration process itself.

Importance of Wastewater Flowmeter Calibration

Accurate flow measurement is vital for efficient wastewater treatment. Calibration ensures that flowmeters provide precise readings, enabling operators to make informed decisions regarding treatment processes, system efficiency, and resource allocation. Here are some key reasons why wastewater flowmeter calibration is of utmost importance:

Regulatory Compliance: Compliance with environmental regulations is a crucial responsibility for wastewater treatment facilities. Calibration ensures that flowmeter readings are within acceptable limits, providing reliable data for compliance reporting.

Optimal Treatment Performance: Precise flow measurement allows operators to adjust treatment processes to match the actual flow rates. This optimization reduces energy consumption, chemical usage, and operating costs while maintaining effective treatment performance.

Maintenance and Troubleshooting: Calibrated flowmeters serve as a valuable diagnostic tool. Accurate readings help identify anomalies or issues in the wastewater treatment system promptly, enabling timely maintenance and minimizing downtime.

Benefits of Wastewater Flowmeter Calibration

The calibration process offers several benefits to wastewater treatment facilities and operators, including...

Accuracy and Reliability: Calibration ensures that flowmeter readings are accurate and reliable, minimizing measurement errors and providing confidence in the data collected. This accuracy is crucial for decision-making processes related to system performance and compliance.

Cost Savings: Precise flow measurements help optimize resource allocation, reducing operational costs associated with energy consumption, chemical dosing, and maintenance. Calibration facilitates the identification of inefficiencies, enabling targeted improvements to enhance overall system performance.

Extended Equipment Lifespan: Regular calibration enhances the longevity of flowmeter equipment. By detecting and addressing issues early on, calibration reduces the likelihood of equipment failure and the need for costly repairs or replacements.

Wastewater Flowmeter Calibration Process

The calibration process typically involves the following steps...

Establish Calibration Standards: Calibration standards are established using traceable references, such as master flowmeters or laboratory-grade instruments. These standards are highly accurate and serve as benchmarks for calibrating the flowmeter under test.

Pre-Calibration Checks: Before calibration, a visual inspection is conducted to ensure the flowmeter and its associated equipment are in proper working condition. Any physical damage or obstructions are identified and addressed.

Calibration Execution: The flowmeter is subjected to a range of known flow rates, and the readings are compared against the established calibration standards. Any discrepancies are documented, and adjustments are made to align the flowmeter's readings with the standards.

Calibration Documentation: A comprehensive calibration report is generated, detailing the flowmeter's performance, any adjustments made, and the overall calibration results. This report serves as a reference for future comparisons and provides evidence of compliance.

Regular Calibration Schedule: Flowmeters should be calibrated at regular intervals to ensure continued accuracy. The calibration frequency depends on various factors, including manufacturer recommendations, operational conditions, and regulatory requirements.


Wastewater flowmeter calibration is a critical process for ensuring accurate measurement, efficient treatment, and regulatory compliance in wastewater management. By calibrating flowmeters, operators can rely on precise data for decision-making, optimize treatment processes, reduce costs, and prolong equipment lifespan. Implementing a regular calibration schedule and maintaining accurate flow measurement.

If you need assistance with wastewater flowmeter calibration in the greater Atlanta area, contact Watermen Inc. at 707-944-1117.  Watermen Inc., we can help with all aspects of your wastewater treatment facilities, including flow meter selection, calibration and maintenance.  

Watermen is not affiliated with any one brand of flow meter. Our goal is to select the best flow meter that fits your needs. 

We service the greater Metro Atlanta area and most surrounding cities including, but not limited to Alpharetta, Austell, Buford, Cumming, Duluth, Cartersville, Flowery Branch, Lawrenceville and Suwanee. 

Saturday, April 22, 2023

How to Relieve Sciatic Nerve Pain From a Bulging Disc

I'm no stranger to back pain. I've suffered from lower back pain in different forms, for most of my adult life.

However, I recently experienced something new to me, which was intense sciatica or sciatic nerve pain in the back of my leg, caused by a bulging disc in my lower lumbar region. The disc between my L5 and S1 vertebrae is bulging to the left.

The strange thing is that I didn't do anything in particular to cause the pain. I was just going about my normal daily routine and when I got up from my chair at work, I noticed a bit of stiffness one day.

By that evening, the pain was increasing gradually and that next morning it was unbearable.

I've had dull, pulsing sciatic nerve pain down one of my legs in the past, but it was more an annoyance than anything else and it went away on it's own in a day or two.

My recent pain was constant, intense and the worst pain I've ever experienced.  

In this post, I will detail what I went through and provide some details on what worked for me, that I hope can work for you as well. 

Of course, I am not a doctor and you should definitely consult a doctor to get a proper diagnosis and treatment regiment.  I just wanted to provide some information from my experiences, that I hope can provide some relief for you as well.

If you're in a hurry, you can scroll to the bottom to the conclusion section, to see the items that helped me the most so far.  

Some of the links below are affiliate links to Amazon. If you make a purchase, I would receive a small commission of approx 3-4%, at no additional cost to you.

Sciatica Pain Explanation

"The sciatic nerve is the largest single nerve in the human body; it runs from each side of the lower spine through deep in the buttock into the back of the thigh and all the way down to the foot. It serves a vital role in connecting the spinal cord with the leg and foot muscles.

Any type of pain and/or neurological symptoms that are felt along the sciatic nerve is referred to as sciatica." - Source

Sciatica pain symptoms commonly originate in your lower back area and then shoot down one, or sometimes both of your legs.  That happens when the sciatic nerve gets activated, usually when irritated by a herniated or bulging disc.

Herniated discs are different from bulging discs.  Herniation is when the jelly-donut like filling in the center of a disc leaks out into the spinal cavity, due to a tear in the tough cartilage layer of the disc itself.

A bulging disc occurs when the entire disc extends outside the space that it would normally occupy.  Picture a hamburger patty protruding from one area of the bun.

The symptoms of sciatica can vary, depending on the situation.

In order to determine what is causing your pain, an Xray can help, but usually an MRI is needed in order to figure out exactly what is causing your pain and to determine a proper treatment plan.

It was an MRI that determined that the disc between my L5 and S1 vertebrae was bulging to the left, which was pushing against the sciatic nerve on my left side, causing the constant, intense pain down my left leg.

Bulging Disc Treatment for Sciatica Pain 

In my case, the pain originated in my buttocks on the left side and went down the back of my thigh, stopping close to my knee.

The pain was constant and I could not do anything that would put pressure on that nerve.  That meant I could not sit at all and standing was painful as well, since gravity causes pressure on the spine which causes the disc to bulge and it actives the sciatic nerve.

During the first 5 days, the only thing I could do was lie down flat on the floor, for the most part.  Most online advice for sciatic pain says to try and continue normal activity after a day or two of rest, but that just wasn't possible for me.  Even lying flat on the floor was painful.

I tried Ibuprofen, thinking that would help the swelling and inflammation, but it did not help much at all. Tylenol seemed to help a little, but only slightly.  It only helped enough to catch a tiny bit of sleep, while it lasted.

I tried taking 1/2 of a muscle relaxer, but it made me anxious and it did not help to take away the pain, so I didn't continue to take that.  

During that first 5 days, I slept at most 3 hours a night and it was in little 15-20 minute chunks. The lack of sleep made things even worse.

I tried to do a few stretches that I found online, but at the time the pain was so intense I couldn't do much.  I also didn't know the bulging disc was the cause of my pain at the time, so I didn't want to do stretches for the wrong underlying issue and cause more problems.

After 5 days of suffering, with little to no relief, I posted about my pain on Facebook and received responses from a few friends and family with suggestions.

The first one was to try apply a topical creme to the affected area where the nerve is inflamed. Much to my surprise, this was an absolute MIRACLE for me.

We happened to have one of the suggested remedies at the house, Tiger Balm and within 20 minutes of applying the balm to my left buttocks and the entire back of my thigh from there to my knee, the pain began to subside for the first time that entire week.

I couldn't believe something so simple, could have such a big positive effect so quickly.  It was surprising, because in all my online research that week, I didn't see any mention of those types of products.

The only downside of Tiger Balm, is that it has a menthol odor to it, similar to Vicks's Vaporub, but it subsides over time.

The other suggestions worked just as well.  They included Aspercreme with Lidocaine and Salonpas.

One caution on Salonpas though, it contains an aspirin component that could result in an overdose, if you utilize the product more than the recommended dosage. For that reason, I decided to rotate between Tiger Balm and Aspercreme with Lidocaine only. 

As you would imagine, these are not a cure for sciatica or a bulging disc, but I credit them for being a true miracle because they were the only thing that helped me cut down the pain so that I could actually sleep, walk and sit, so that I could begin to work fixing the underlying problem. 

Exercises For Bulging Disc Pain

The exercises in this YouTube video are very helpful. The one that seems to help the most is standing straight and bending in the direction away from where your disc is bulging.

In my case, since my disc is bulging out to my left side, standing straight and bending to my right is helping the most. I continue to do that several times a day.

Inversion Table to Help a Bulging Disc and Sciatica Pain

Another suggestion from a close friend was to try an inversion table.

He has been using one himself for several years, to help alleviate similar pain.

I did a lot of research on several of the more popular tables out there and went with the one shown here for several main reasons.

Based on the extensive reviews, this one seemed to have more cushion and support, had a more solid overall feel, folds for easy storage and it can be used by yourself, without a spotter (although the manual recommends against that).

It arrived in 2 days via Amazon Prime (free 30 day trial), took me about 90 minutes to assemble and I was inverting in no time.  It lived up to all my expectations.

Many of the other models have complaints about not having enough padding, especially around the ankles. That is not the case for this one.  Everything feels very snug, solid and is very easy to operate.

So far I've utilized the inversion table twice daily for 3-5 minutes each time, at a 20% inversion angle and it has helped greatly.  You can work your way up from there to 40, 60 or 80%.


I'm still not quite out of the woods yet, but I have returned to normal activities and just have to be careful to not overdo things at this point.  I will be sure to report back with any new developments, but in the mean time, below is a summary of the items that helped me the most thus far.

Keep in mind, these items helped me with sciatica pain caused by a bulging disc. If your situation is different, these same products and procedures may not be appropriate. As mentioned above, please be sure to consult a physician to get a proper diagnosis and treatment plan, for your specific situation.

Alleviate Sciatic Nerve Pain

Tiger Balm Ultra - Get the Ultra clear version, the red one can stain

Aspercreme with Lidocaine

Exercises to Reduce a Bulging Disc

Equipment to Help At Home

Inversion Table For Spinal Decompression 


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