Recent content by Pb2Au

In the Handbook of Chlorination by Geo. C. White, 1999 it states that sodium hypochlorite degradation is as follows: Temp 77 degrees Days...... 12%..........10% 10..........11.5..........9.7 20..........11.0..........9.0 30...........9.7..........8.7 40...........8.8..........8.5...

Re: How to calculate cost per effective chlorine liquid v po Here might be an alternative method of comparing costs. The following are amounts of each chlorine product needed to add 10 ppm of chlorine to 10,000 gallons of water. Cal Hypo 48% 28.00 oz Cal Hypo 53% 25.00 oz Cal Hypo 65%...

Bromine tabs require much more water (flow) to dissolve than trichlor. You could start using bromine in the chlorinator but it may not have enough flow of water to dissolve enough bromine to maintain a bromine residual. The minimum recommended level of bromine is 4.0 ppm. You will need a bromine...

Yes, I thought chlorine level and pH and perhaps temp were too high to make it practical. However, the residence time of 5 minutes under certain conditions intrigued me. If you could optimize the process, super-scale conditions would only exist for 5 minutes and CYA would be gone. Melamine (the...

Here is a patent from 1978 showing how to reduce CYA in water using sodium hypochlorite. US Patent 4,075,094 - Sodium Hypochlorite Treatment fro Removal of Cyanurate Compounds from Aqueouss Waste Streams, Ronald H. Carlson, FMC Corp., Feb 21, 1978. On a weight basis, this reaction requires a...

Yes, MPS does buildup in pools. Think of it this way. If you always maintain a good FC level and then add MPS say once or twice a week, there is nothing for the MPS to do. So it builds up. At about 45-50 ppm of MPS it get irritating to skin. DuPont even warns against this in their literature...

Try a good liquid polymer water clarifier. Leslie's and Natural Chemistry have good ones. The more you can dilute the dose with water before adding it to the pool will make it work even better. You may need to add it twice. Be sure to check your filter pressure and backwash or clean your filters...

I have talked to the guy who invented the CuLator metal removal bag. He claims to have the only product that actually removes metals from water. It is a bag placed in the skimmer and it will remove about 0.8 ppm of copper from about 25,000 gallons. Here is a website with some FAQs...

Sorry, the yield arrow didn't show. Here is the equation. 2NaCl + 2H2O --> Cl2 + 2NaOH + H2

Here it is. Electricity passed through a solution of salt and water (called brine) produces three things: 1. Hydrogen gas (H2) at the negative electrode 2. Sodium hydroxide (also called caustic soda—NaOH) at the negative electrode 3. Chlorine gas (Cl2) at the positive electrode In the...

Have ever gotten bleach or liquid chlorine on your hand or fingers and noticed that the smell would not go away for several days? Yeah, me too. I thought the smell was chloramine. I thought that the chlorine reacted with ammonia that was on my skin from sweat and it produced a chloramine and...

The CuLator product is a bag you add to the skimmer, They have 2 kinds one will remove 0.8 ppm of metal from 20,000 gallons of water. The other claims it is heavy duty and it will remove 1.0 ppm from 20,000 gallons. This product does remove the metal, not sequester or chelate it. Of course it...

Bromide ions (Br-) in water can be converted into HOBr (hypobromous acid – the killing form of bromine) by adding an oxidizer to the water. The most common oxidizer for this purpose in the pool and spa industry is potassium peroxymonosulfate (Oxone®, monopersulfate or MPS) but any form of...

Thank you. I knew joining TFP had its rewards.

Wow. That is great. I am sure glad to know that chloroform, dibromochloroform, haloacetonitriles, cyanogen halides, halopicrins, haloacetic acids, chloral hydrates and haloacetones are all destroyed by additinal chlorine. Also the 186 nitrogenous componds that can combine with chlorine that are...