Septic Chlorine Tablet Problems When Storing – Chlor Mor Issues

May 11, 2012 By Leave a Comment

B&B Alternative Septic Solutions, LLC has received numerous phone calls and e-mails with regards to chlorine tablets, dissolving or disassociating when stored.  We have thoroughly reviewed this issue and have determined that the NORWECO bio-sanitizer chlorine tablets do not have this problem.

Chlorine

Chlorine (Photo credit: Wikipedia)

Clients that have contacted us have further indicated that when storing Chor Mor chlorine tablets, the tablets seem to dissolve or disassociate when stored for any period of time.  We feel that this problem is due to inferior binding agents in the chlorine tablets production.

 

B&B Alternative Septic Solutions, LLC thoroughly tested the NORWECO bio sanitizer tablets and found little or no problem with the chlorine tablets, dissolving or disassociating when stored for over a year period of time.  You should always make certain that the storage containers or sealed tightly.  Apparently, Chor Mor tablet storage containers may have poor seals should be thoroughly checked to make certain that they are airtight.  In any event, Chor Mor tablets appeared to be susceptible to dissolving when exposed to air.

 

We strongly recommend NORWECO bio-sanitizer chlorine tablets as the best chlorine tablets on the market.  Pay a couple dollars more and get the best, most reliable tablets on the market.  Our studies indicate little or no dissolving or disassociation of the chlorine tablet blends produced by NORWECO.

Once again, NORWECO products are proven over 100-years.  NORWECO’s long track-record providing quality products is unparalleled by the competition.  Why take a chance on these new startup companies, which do not have the hundred-year track record, that NORWECO has.  B&B Alternative Septic Solutions, LLC offers septic chlorine tablets, and wastewater chlorine tablets  at discounted online pricing.  A quick check of Chor Mor pricing versus our pricing, indicates that we are priced lower than the Chor Mor competitors.  Don’t settle for inferior products, buy the best, buy NORWECO.

Click on our NORWECO PRODUCTS Page on the top of this page for details.

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Sewage Wastewater Chlorine Tablet Precautions

February 8, 2012 By Leave a Comment

Brent Hardbass, PE

English: Calcium hypochlorite formula

Image via Wikipedia

Calcium hypochlorite is generally the approved septic wastewater chlorine tablets. It is very important that you do not confuse isocyanurates with calcium hypochlorite. Isocyanurates are generally used for swimming pool chlorination, not wastewater disinfection. You should never use isocyanurates for sewage wastewater disinfection or septic tank chlorination.

We can break down wastewater treatment systems into two categories; high and low wastewater flow rates. A high flow system is normally a large residential wastewater treatment system or commercial wastewater treatment system. The high flow systems generally use a product similar to NORWECO’s Bio-sanitizer disinfection tablets. The Bio-sanitizer tablets dissolve faster than the low flow chlorine tablets. Low flow systems require specially designed tablets, which are similar to the NORWECO Blue Crystal sanitizing tablets.

Low flow systems or systems that do not have flow equalization (FE) generally use of Blue Crystal type chlorine tablet. These tablets are specially design to work under these low flow conditions. The base material is still calcium hypochlorite, with a different tablet-bonding agent. If you are looking for low flow chlorination tablets, then we recommend NORWECO’s Blue Crystal disinfection tablets.

Commercial wastewater treatment systems, generally, have higher flow rates. The calcium hypochlorite tablets used in this application are designed for these higher flows. Commercial systems can flow in excess of 300 gallons per minute flows. NORWECO produces a specially designed calcium hypochlorite tablet that is known as “bio-sanitizer disinfecting tablets.” In both the high flow and low flow applications, the tablet size is the same (2 5/8 inch diameter, and 3/16 of an inch thick). Standard chlorine-tablet-feeder-tubes, generally 3 inches in diameter, readily accept this size of tablet. We recommend the NORWECO biodynamic tablet feeder LF series, as the best on the market.

Chlorine tablet handling precautions: Chlorine tablet vapors and the calcium hypochlorite tablets can be very toxic to your hands, face and lungs. In addition, these calcium hypochlorite tablets react quite violently with grease, oils and other petroleum products. In addition, dechlorination tablets and other types of chlorine can react quite violently with the calcium hypochlorite tablets.

Whenever you handle calcium hypochlorite tablets, you should use a protective face shield and rubber gloves. Be especially careful when you first open the tablet storage container. Large amounts of chlorine-based gases release when you first open the container. Never, breathe these gases in. The gases can damage your lungs, your face and other mucous membranes, such as your eyes. Handle calcium hypochlorite tablets caution.

How much chlorine should you expect to use?: A standard three bedroom 2-bath home should use about 12 chlorine tablets every four months. This assumes that a three bedroom two bath home has six persons living in it. A significantly higher tablet usage rate could indicate excessive wastewater flow, caused by a leaking faucet or toilet. Also, jerry-rigged and/or poorly designed chlorine tablet feeders could be the cause. First, check for water leaks, and then consider replacing your wastewater chlorine tablet feeder. For example, a jerry-rigged tablet feeder could be made with a 4 inch Tee with a vertical three-inch PVC tube. In this case, the chlorine tablets could be in constant contact with the wastewater. The tablets in it dissolve more quickly because the bottom tablet is partially submerged in the water. A good replacement consideration would be the NORWECO biodynamic LF series feeder.

The price you pay per chlorine tablet can vary greatly from vendor to vendor. Shopping online for your chlorine tablets is a very good option. For example, you can easily spend $100 or more, if you have a larger wastewater treatment system. If you can save 20% or more on the price that you pay per tablet, you can save thousands of dollars per year. It pays to shop for the best price.

In conclusion, calcium hypochlorite tablets should be the only type tablets you use in your wastewater treatment system. Make sure you take the proper precautions, if you maintain the system yourself. Use personal protective equipment at all times when handling the chlorine tablets. Make sure you store your chlorine tablets and clean, dry areas away from all petroleum products and other chlorine. Keep an eye on your chlorine tablet consumption. If you are using too much chlorine for the size of your wastewater treatment system, you should consider looking for water leaks in your system and/or replacing your wastewater tablet feeder with a NORWECO biodynamic LF series feeder or equivalent. Please feel free to leave a comment and tell us how you like this article.

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Septic Tank Treatment Options – RID-X Versus NORWECO Bio-Gem Review

January 26, 2012 By 1 Comment

As a homeowner, I always had trouble with my septic tank system.  Due to various issues, I had to pump my septic tank every one to two years.  Around the year 2000, this was not a big issue in that pumping costs were about $100.  Septic tank pumping costs are now about $350 for a 1200 gallon septic.  This high-cost and the inconvenience of having to pump forced me to look at septic tank additives.  From the year 2002 about 2005, I tried many septic tank additives.  Septic tank treatment additives that I tried included RID-X and numerous other liquid additives.

All the standard commercial additives available, most notably RID-X, barely extended the time between pump intervals.  In addition, noticeable odor from my septic tank and floor drains were prevalent when I used RID-X in these other products.  As a licensed wastewater engineer, I felt that I could do better.  My research led me to start using NORWECO Bio-Gem organic digester.  I started using Bio-Gem in the summer of 2006.  Since using Bio-Gem organic digester, I have not had to pump my septic tank for over six years now.  One side benefit that I see in using the NORWECO Bio-Gem organic digester is the elimination of the rotten egg smell, which I had up to this point.

In addition, I had clogging line problems from the house to the septic tank.  My wife routinely poured bacon grease another oils down my sink drains.  These greases clogged my line from my house my septic tank.  I troubleshot this problem with a sewer camera prior to and after using Bio-Gem.  Over a couple months, the Bio-Gem product digested all the grease buildup in the line.  I have had no further problem with this line clogging.

I became a NORWECO distributor, since I like the product so much.  Please visit our online store for pricing on this fine product.  I discount the prices of all NORWECO products since I have low overhead and that I do volume online selling.

Please visit our site for pricing and other good information on wastewater treatment systems and NORWECO products.  If you have any questions, or comments, please feel free to contact me at bosshardeng@aol.com.  We welcome your input.

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Sewage Wastewater Chlorine Tablet Feeder Design Considerations

January 6, 2012 By Leave a Comment

By: Bruce Hardboss, PE

 

This article discusses minimum sewage wastewater chlorine-tablet-feeder design considerations.  As a wastewater engineer, I routinely see application of wastewater tablet feeders for chlorination designs that are not well thought out.  This article will highlight the NORWECO tablet feeder designs since we feel that the NORWECO tablet feeders are the best on the market.  The principles that we present are recommendations for you to implement in your design.

Feeder Tube

Tablet feeders generally have some sort if tube which is filled with the chlorine tablets.  The tube is easily removed for re-filling.  As noted in the figure below, the tube is slotted on the bottom, which allows the wastewater to contact the chlorine tablets, dissolving them, and thusly chlorinated in the wastewater stream.  The tube feeder product that you select should have a removable tube, such as the NORWECO design.

Tiered flow

The second design consideration should include some sort of tiered flow.  As in the figure above, as the flow is increased the width and depth of the tiered flow should also be increased.  This allows for, under low flow conditions, wetting of only the first tablet in the tablet tube.  This tiered flow design significantly reduces the rate that the tablets are expended.  In addition, under low flow conditions better chlorination due to contact with the first tablet is achieved.  The tablet feeder that you select should have a tiered flow design.

Tiered Flow Considerations

Warrantee.

Tablet feeder that you select should also have a minimum warranty of 20-years.  Tablet feeders that come with a 20-year warranty, generally, are made from superior materials that resist corrosion, cracking and deterioration.  So if the tablet feeder that you select does not have a 10-year warranty.  I would suspect that the materials used are substandard.

Installation

The NORWECO tablet feeders also come within a unique feature.  At the base of the tablet feeder holding tube, 4 inch PVC piping can be glued or sealed on the top of the tablet feeder.  This feature allows you to bury the tablet feeder deeper than the standard riser tubes.  The PVC piping thickness can be increased to schedule 80, which allows for superior protection of the feeder riser tubes from the surrounding soil.  Alternatively, the NORWECO IT series tablet feeders include plastic direct burial risers, which are generally used in commercial applications. As we increase daily wastewater flow-rates, the tablet feeders increase the number of tablet feeder tubes, as noted in the figure below:

Increased Number of Chlorine Tubes With Increased Flow Rates

 

NORWECO’s Direct Burial ITR-S Series Tablet Feeder

Conclusions

As you shop around for your next tablet feeder, we strongly recommend the NORWECO line of products.  NORWECO is been in operation for over 100 years.  NORWECO’s products are seasoned, and continuously improved.  If you are considering purchasing or installing a tablet feeder in your present system, then please consider the designs options that we have presented in this article.  If you are interested in our NORWECO products, please click on any one of the images in this article, or merely go to the NORWECO products page on this website.  Our recommendations are written by a registered professional engineer with a strong background in wastewater engineering.

If you have any questions, then please feel free to contact us at www.wastewatertreatmentplant.org.

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Sewage Wastewater Lift Pump Design Considerations

December 11, 2011 By Leave a Comment

Properly designed Wastewater Lift pump systems require some basic attention that most plumbers just fail to address. When designing your Sewage lift unit, we recommend that you consult a registered engineer to ensure that your system will work reliably for years.

We reviewed internet posts, which present guidance for homeowners and plumbers to use when choosing a Sewage wastewater lift system. Most of the internet “advice” we reviewed fails to consider some critical pump design elements. This article attempts to highlight a few minimal design considerations which we feel should be addressed.

Firstly, what type of wastewater requires pumping? For example, various sewage pumps can pass different size solids from small quarter inch pieces to up to 2.5 inches in diameter. For larger size solids, grinder pumps are used, much like a garbage disposal, to chop up the solids into smaller particles that can be pumped. Therefore, if we are pumping screened or filtered wastewater, a liquid pump is adequate. The liquid pumps are generally multi-staged pumps and can deliver a high head (pump outlet pressure). If solids are screened in larger pieces, then specially designed lift pumps can be used which can pass the larger solids.

All pumps require a minimum net positive pump suction head (NPSH) to minimize cavitation. If the pump cavitates excessively, then the impeller will wear out, possibly in a year or so. A properly design system ensures that the correct pump is chosen which will match the system, minimizing cavitation and extending pump life.

The figure below is pump curves for the basic NORWECO wastewater lift units and a “typical pump placement.” The pump curves are the curves bending downwards. Each pump has a different application and you select the appropriate pump based on the desired lift height and the resulting system curve. The system curve, in this example, curves upward. Where the pump and system curves meet yields the flow rate and pump lift height when the pump is running. Generally, you meet NPSH requirements if the pump curves intersect without extrapolation.

The system curve should ALWAYS be calculated as noted in the bottom of figure one. The calculation ensures that the pumps operate in an acceptable range. As a homeowner or contractor, you should ALWAYS ask to see the pump and system curves for your application. Please do not trust an installation that does not perform the calculation, force your plumber or engineer to provide one.

One additional consideration is the pump chamber height and/or lift. I notice many “sewage pump units” offered on the internet. The pump units are short and fat sumps. We estimate that these systems are very inadequate. When the pump sump height is too low, the pump will tend to short cycle. The “short cycling” can cause excessive pump wear. Also, the on/off and alarm settings tend to be unreliable due to the short travel distance (the pump sump height is much too small) in liquid height. In the NORWECO pump units, you adjust the pump sump heights are by adding segments to the sump. This gives the design engineer flexibility in pump designs which ensure maximum pump cycle times and proper NPSH.

Please consider our line of NORWECO lift stations. Our pricing is very competitive and we do maintain staffs of registered engineers, which can provide complementary lift pump calculations with every purchase. We feel that the NORWECO pump units are the best pump units on the market today.

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Commercial Wastewater Pumping Stations Review of Bio-microbics’ BioSTEP® and NORWECO

October 2, 2011 By Leave a Comment

 

Article By Bruce Hardboss, PE

 

 

BioSTEP® screened pumping schemes are versatile ticker packet designed to transferral screened liquid in numerous size-diam, decentralized accumulation applications. BioSTEP® is a registered trademark of Bio-MICROBICS.  Bio-MICROBICS claims the following; “BioSTEP® screened pumping systems are designed so that once installed, all normal operation and maintenance can occur without the messy removal of system components. BioSTEP screened pump vaults utilize the patented SaniTEE® screening technology to screen and deflect solids rather than collect and hold them like other filtering technologies. ” (see http://www.biomicrobics.com/?p=67&s=10) This article is the sole property of BnB Alternative Septic Solutions, LLC and does not necessarily reflect NORWECO’s position. We feel that our evaluation is technically correct and we welcome constructive comments.

At BnB Alternative Septic Solutions, LLC our registered professional CIVIL Engineers prefer simple NORWECO grinder pump configuration(s) or the robust BK-2000 filtration system followed by a standard NORWECO pump unit. Bio-MICROBICS advocates their BioSTEP® product as superior to filtration systems. We strongly feel that for flows up to 2000 GPD, a BK-2000 system provides robust filtration and is a simpler approach when compared to the BioSTEP® system. We also feel that adding grinder pump units to a standard septic tank outlet is also a “more simple design.”

Either a NORWECO pump vault or a simple grinder pump installation in the septic tank fluids compartment or a BK-2000 filtration unit paired with a standard lift pump unit will give comparable performance and possibly increased reliability. We have seen very few problems with particle clogging.

We recommend adding NORWECO Bio-Gem organic digester or Bio-PERC to the wastewater up-stream to promote solids breakdown to any configuration, including the BioSTEP®. A typical NORWECO pump package would be as noted below:

Typical NORWECO Pump Package

(There are multiple configurations available)

Also, a good option which is robust and similar to the Biomicrobic’s approach is to add a BK 2000 filtration unit to the septic tank outlet, then feed the filtered outlet to the above pump unit. In this case a single liquid pump is adequate since solids are removed and TSS is lowered to under 10 mg/L.

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