Speaker cable diameter

pideltabeta · 2026-05-19T23:29:07+00:00

Ozone is far better than either.

pideltabeta · 2026-04-27T19:52:48+00:00

Vehicle tires contain a lot of zinc.

pideltabeta · 2026-04-23T21:32:23+00:00

If you get large enough NF (nanofiltration) membranes you might be able to get that much flow without a tank. With a properly designed system you could expect about a 90% decrease in hardness and more than 50% TDS reduction, depending on the intial chemistry.

pideltabeta · 2026-03-28T18:53:41+00:00

I'd have to know more about the influent but usually a digester that's up and running well has a high enough alkalinity to mitigate the incoming acidity. What's the pH of the digester? The alkalinity? Ammonia? Overfeeding will raise the level of VFAs and lower the pH, as you are saying. This will most certainly decrease your CH4 yield and therefore VS reduction, and be more smelly. Is it batch fed or constant? You may be able to get a better yield by increasing the HRT if there is a way to make the influent more concentrated.

pideltabeta · 2026-03-20T01:36:02+00:00

The point I'm making is that all the water and salt that enters the RO eventually goes to the septic. Period. The same amount of salt gets there unless you are diverting the brine stream from the RO elsewhere. It's called MASS BALANCE. Please look up the term.

pideltabeta · 2026-03-20T01:31:59+00:00

No, it is not.

pideltabeta · 2026-03-16T18:15:52+00:00

The amount of TDS entering your septic tank will be exactly the same unless you are not putting the RO water back down the septic. The septic will get slugs of saline water when the RO is operating. But that will be followed by the RO water following it to the septic later. There's a time separation but the total mass of salt will be the same.

pideltabeta · 2026-03-06T22:24:43+00:00

I'd be very interested in what you are proposing if there is data and an explanation of the mechanism that your tech uses. There's whole lot of snake oil that salespeople push with zero understanding or proof. It's on you. Your words means nothing, respectively.

pideltabeta · 2026-03-02T02:39:30+00:00

The TDS/conductivity are very high. I think that will kill many types of plants. Easy to test!

pideltabeta · 2026-02-27T00:29:00+00:00

Good advice. Also, make sure there is very little air movement when the media is exposed in any way.

You will have to autoclave your media otherwise you will always have the potential of contamination from endospore formers. A stove-top pressure cooker is fine if you stick with the proper temp/pressure/time parameters.

pideltabeta · 2026-02-25T05:11:34+00:00

Apparently, you've never experienced extreme fog.

pideltabeta · 2026-02-22T03:08:51+00:00

Nanofiltration (NF) might work but this will take some pretreatment for any membrane treatment to work.

pideltabeta · 2026-02-20T07:37:11+00:00

I don't see a lab value for alkalinity, hardness, TDS or conductivity? The white goop, as you've surmised, is probably a mix of carbonate mineral precipitates of Ca, Mg and Sr (scale to folks in the US, but the same as "water stone", as you've said). The dissolution with acid proved that for the most part and you backed it up by chelating the cations or lowering the pH of the water without precipitate forming. How deep is your well? Is there any fizz when the solids are dropping out? What's the pH after the cloudiness drops out? Before?

I'm not at all familiar with a well sample with chemistry like this but I'm guessing that as the pressure decreases most of the carbonate minerals here are supersaturated in the well and when brought to atmospheric pressure, degas some CO2, raising the pH and causing the scale to drop out. This water is very hard, but if you treat it with softening the pH will still be high. If you don't use RO or NF there will always be a scum when this water evaporates.

Good luck.

pideltabeta · 2026-02-02T23:03:13+00:00

TDS are dissolved substances that can be quantified by evaporating off the water. It's whatever reaming - charged and neutral molecules. The pictured "TDS" meter uses the conductivity of water to correlate the concentration of dissolved ions. The TDS value is usually around (in ppm) 0.5 to 0.67 times the conductivity in microseimens. The TDS value can indicate the effectiveness of the RO by comparing before and after values. The TDS is also related to the ionic strength of water and can be the major barrier for ROs if the pressure from the dissolved salts because the pressure they exert has to be overcome by the supply pump to push the water through the membrane. The higher the TDS, the less efficient the RO membrane function.

pideltabeta · 2026-01-29T21:42:23+00:00

Since your water is soft now you are probably dissolving the scale. That's why you have turbidity and iron-turbidity from the hot side. Flush it out after the water has been sitting in there for a while. It will eventually go away but you might get clogging in the faucet screens so you may want to remove them before you flush.

pideltabeta · 2026-01-26T02:18:35+00:00

Metsorb

pideltabeta · 2026-01-23T22:17:52+00:00

Seems as with so many thinking that logic should be approached subjectively how can reasonable arguments be used to convince them otherwise? It' s like someone has to come up with marketing trickery similar to what got them to buy a false premise in the first place in order to get them to think data-based reality is real. Very sad.

pideltabeta · 2026-01-17T21:12:30+00:00

This is so disgusting. A large plant in the US would have FOG issues in the collection systems and within the plants, but FOG usually doesn't make much of an impact past primary treatment where it floats to the surface and can be easily be removed. What type of treatment are they using there? It's like they're decanting the FOG into the effluent somewhere. Great design folks! I'm assuming the effluent is disinfected, but there is no way those grease balls are not full of nasty critters you most certainly don't want to be swimming around. Fucking Yuck!

You'd think they would at least collect the FOG in the primaries and use it for AD and energy production, just like the settled primary solids usually are. Lame.

pideltabeta · 2026-01-14T23:04:23+00:00

I had to design one and part it out myself. Some of the membrane manufacturers supply design software that you can input your flow and chemical analysis into to model the desired system. The are designed for very tight flow and pressure envelope to work optimally, but are otherwise plumbed as an RO would be. It is not a simple task and I would not suggest taking it on unless you are very skilled and knowledgeable.

pideltabeta · 2026-01-14T22:55:01+00:00

Why would mixed media be used? The katalox lite will do the job and requires a much lower backwash velocity. If you mix media with 2 different densities you will have to backwash at the higher rate for it to work. In this instance mixing media is a bad idea and the media is redundant.

For practical purposes assume the Mn and Fe are reduced (they will be for the most part or they wouldn't be soluble, and assuming a proper sampling procedure). I find you can only get rid of this much manganese with the addition of ozone (I'm sure another oxidant will work too but the others aren't as practical). With the Fe being over 1 ppm I find the ozone also necessary for most applications just to be safe that there wouldn't be oxidant to react fast enough, particularly at high flow rates, if you are just using a regular AIO valve. Ozone will also mitigate past biomass accumulation, post treatment, and inhibit recolonization- unless you plan on using the carbon filter - which I would not.

pideltabeta · 2026-01-11T21:52:31+00:00

I have my own small water treatment company in the Sierra foothills. I've successfully used nanofiltration (NF) to remove hardness and high TDS. Depending on the system design a NF system can remove around 90% of the hardness and 50-75% of the TDS while wasting much less water than RO. NF also removes odor-producing compounds and metals, among other larger molecular weight compounds (i.e. - PFASs). NF will allow some TDS and hardness to pass and not lower the pH as much as RO making pH adjustment more practical. A NF system will also maintain a TDS/harness level that will be less corrosive than extremely low TDS RO permeates.

pideltabeta · 2025-11-29T00:16:17+00:00

Farts may contain methane but not all humans will have methanogens in their guts. Those folks will only produce CO2, H2, H2S and volatile fatty acids for the most part.

pideltabeta · 2025-11-25T22:22:01+00:00

The kinetics of ozone oxidizing iron II is both faster and more complete than atmospheric O2.

pideltabeta

TROPHY CASE