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Cake day: July 5th, 2025

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  • Basically in areas where desalination is used for mass water production pure water is the resource in shortest supply and therefor osnhigher value than electricity. Wastewater is a potential source to feed RO systems to generate pure water, any water source with a lower concentration of solute than seawater is a potentially more efficient feedstock for the RO purification than seawater. Given that RO purification takes more energy than the energy generation system discussed here, it would be more efficient and therefore cost effective to mix the wastewater into the feed stream and produce a less concentrated brine waste output rather than use it to dilute the brine waste after the fact. The more concentrated the brine output from an RO plant, the more energy it takes to produce due to diminishing returns as the osmotic pressure increases with solute concentration.

    There are exceptional cases, as I mentioned, where the composition of the wastewater stream will make it so that concentrating the solute in that stream has an economic incentive greater than the demands for RO water. In those cases diluting the brine may make economic sense. The location of the plant impacts this as well, there may be some edge cases where transporting the brine to the source of wastewater and processing it there on site may have an economic advantage. I’m thinking of nuclear waste and high toxicity chemical plant waste here where release is not an option and storage is mandated, so the waste stream will need to be both segregated from other less toxic waste and stored long term.


  • Here’s a thing about LLMs, they will effectively make laws like this meaningless. Law comes in to enforce against a company building a program to block ads, extension goes off market. Someone asks their LLM “create an extension function referencing the same data set for my browser that performs the same function” boom new extension with no central point of distribution. Share the prompt on a forum, now everyone has a custom ad blocker. Or not so far down the road, LLM is directly built into the browser, no extension needed just prompt “do not display known advertisements on pages I request before loading, but perform background activity which gives feedback to the site that ads have loaded” boom done.

    In a way, local LLMs are like distributed applications, they make enforcement against specific program functions pretty much impossible.



  • Seriously awesome waste energy recovery system. Based on my read, this seems best used as an energy recovery solution at desalination plants where a portion of the energy used for the RO can be recovered via the reverse process of diluting the brine. Unfortunately in many places where desalination is used it is likely more efficient to reproduce the wastewater stream rather than dilute the brine, as water is the resource in shortage, HOWEVER there are clear cases where contaminated waste streams that can’t be used for human consumption or ag use could be used for the purpose with the side benefit of concentrating the contaminant stream to better manage containment, think nuclear waste dioxins mercury or PFOS where release into the environment as a waste management strategy is disallowed.

    Speaking of nuclear, this makes me wonder if this could be a step in the waste management of liquid salt used in liquid salt reactors. They say the liquid salt is reusable for a long life, but I do wonder if there isn’t some level of need to replace the salt or refine it periodically, maybe this could play a part in that process? Anyone have info?






  • Ready Player One much? I notice they dont say the dimensions of the units in the article.

    It looks like to modules might be wider than CONEX containers, which in my mind is a necessity for these to be liveable. the width of a CONEX is too narrow after insulation and wall cladding to be practical.

    That said, with modular prefab housing blocks like this the big big advantage is speed of construction, which makes it so that the financing of the building doesn’t have to cover a multi-year gap between permitting to first leases, making these buildings much more cost effective and easy to finance. This version is basically the simplest possible approach, but there are much more esthetically pleasing ways to build this type of building and keep the same advantages.