This project goes into the build a simple survival water distillation system to turn your salt water into drinkable fresh water. This setup can be made with little more than two glass bottles, some metal trays and some sand. So the primary components of this setup are two glass bottles, the wider the bottles are in diameter ,the better and a pair of metal trays.
The first part of this process will be to prepare an area such that the two bottles can rest mouth to mouth. The important part is that one of them needs to be suspended over a heat source. This could be done over an open campfire, you just need to find a way to suspend the bottle above the flame either using rocks or logs.
Cut a small notch on one side of the pan so that the neck of the bottles can sit a little lower in the pan. This is by no means necessary, but it will make the setup a little more secure. With the trays secured in place, both of them are now filled with sand. The sand will allow the trays to more efficiently act as heat sinks, one tray to cool one of the bottles and the other tray will be used to very evenly heat the other bottle so that it doesn’t shatter from being heated too much on one side.
The bottle is pressed firmly into the sand so that it gets good thermal contact and will be heated evenly. The second bottle is adjusted such that its mouth will meet up with the first and it is also pressed into the sand to obtain good thermal contact. Another reason that I’m using sand for this is because it makes it very easy to adjust the bottles angles and it is best to make the bottles meet up as evenly as possible so that there is not much room for water vapor to escape.
We want it all to make it into this second bottle where it can condense as freshwater. As an additional measure to keep the cold half of the bottle cold, we wet the sand on this bottle with water or cover them with a wet cloth to allow evaporative cooling to take place.
With such a large quantity of sand in this tray it does take a little while for it to reach the boiling point and get this process started. But once the sand has reached that point, it stays hot for a long time. So it is a pretty quick process as the water boils dry in this first bottle to simply refill it and you can continue on with the distillation process as long as you want.
Rotate the bottle so that the top portion becomes hot from the steam, it is rotated into the cold sand below. And in that way the entire bottle maintains a cold temperature which causes the distillation to go much faster.
- How to build a Simple Backyard Bio Sand Water Filtration System from easily available materials .This project goes over the build of an emergency cheap bio sand water filtration system. This can filter out your polluted water from your stream or lake or gutter. Bio sand filters are good for filtering parasites, bacteria, protozoa virus and fine sediments from well water. These work by doing four stages of purification. First is the biological zone where bacteria eats your parasites and pathogens viruses. That happens on the surface of the bio zone. The second is mechanical trapping where sediment can be attracted to porous rock, and it will filter out sediment absorption, third one is absorption where the electrostatic charge which will attract small particles and viruses down to virus level and get attracted to this sand and last stage is natural death from nutrient depletion when there won't be anything for bacteria or virus to eat or thrive on when they start to go through the sand dairy of the filter. There is two five gallon buckets, one stacked on top of the other. These are black food storage buckets. These buckets don't tend to promote the growth of algae as much as the opaque buckets do. The top bucket is the water storage bucket, the top one is the filter. There is an eighth inch hole on the lid at the top bucket that allows water to flow freely without creating a vacuum. There is a 16th of an inch hole at the bottom of the bucket that slowly let the water drip out onto the top of the next bucket. The bottom bucket has 8 one quarter inch holes along the sides. This allows the water to disperse over the top ,they drip down to the these holes along the side of the bucket such that they dont disturb the biozone underneath. It'll take about three weeks to establish a bio zone. And during that three week period, you're going to have to continually feed some polluted water in there with bacteria in it to feed the bio zone to make it develop and grow. It would put a large circular ring in the center of your bio filter and distribute the bacteria off to the side. Now this filter relies upon bacteria that forms on the top of the sand to eat the other bacteria like Giardia and Cryptosporidium. A pipe at the center will prevent the sand from coming up into the faucet and getting into the drinking water. We here have two layers of sand. The bio zone is going to have a couple inches of fine sand on it to promote the growth of the bacteria. The course sand underneath will filter out sediment and other bacteria. Bottom layer is an inch of fine and pea gravel. The second stage of this filter starts with the build of a 4 way distribution pipe made of PVC pipes and a four way coupler. We cut holes in these pipe ,one towards the end and the other towards the center. This will distribute the water over the top of the bucket and so that the water isn't just going in in one spot and trickling down one side or down the center and not evenly distributing it over the top of the sand Drill a hole at the bottom of the 2nd bucket and put a quarter inch brass drain plug .This can be used to drain water out the barrels if I want to store them or to flush them out. We put put 3 levels of gravel and 3 levels of sand in the second stage. Put two to three inches of each layer of gravel. Add an inch of activated carbon on top of this fine gravel. Treat both the filter with chlorinated water and fresh water and let it sit for few minutes. Stack the second stage filter on top of the first stage. Make sure the whole setup is tightly sealed. Further purify the water by letting it sit under the sun. The ultraviolet ray purify the remaining bacteria that might be in there. https://www.youtube.com/watch?v=6bqYI1Z68jM
- How to build a Homemade Multi Use Water Purifier that uses no electricity .Works as Water heater and stove burner too….This project goes into the build of a simple and cheap two stage DIY water filter.Also doubles as a stove burner. The materials needed for this build are some bricks,bottles,copper coil,activated carbon,sand,gravel I got the sand and activated carbon water filtration part on the far left. In the middle, I've got it heated in a copper coil running on isopropyl alchohol. The purified water is coming out on the right side. The first step is to make the 1st stage filter. We take a 2L bottle cut in half, drilled a quarter inch hole on the bottom and drop in a couple of cotton balls and pack it in there. Next step is to add the activated carbon,sand and gravel.Rinse all of them before adding . Align the bricks and place the cans on top. Place a small tin with the isopropyl alcohol inside the middle can. A copper coil is inserted into the middle can and connect between the first can and the water bottle. Add the sand mixture filter bottle on top of the first can below the copper pipe. For the first can the one that holds the activated carbon filter,just remove the label and drill one small hole at the bottom. Then for the second cam that holds the copper coil, you cut down the top, take about a third of circumference off and cut about two thirds of the way down. Then put one small notch on the top and a hole down below for the coil. To make the copper coil just wrap it around from top to bottom in a smallcan, push the can out and leave about a foot on either side. Notice I added a couple of bricks and pointed the end of the copper tubing down directly into the can so we won't lose hardly any water and make sure to drill those steam vents so the pressure doesn't build up. Make sure to drill vents on the bottle so that the pressure doesn't get build up. Pour the alcohol under the coil and fire it up. Just put a little in ,you don't need too much. A full glass of water gets purified in three to three and a half minutes. This gravity fed two stage water filter should take care of pond water stream water swamp water, just about any water you can think of. Don't try using this without the heavy sand gravel and activated carbon in there or the water will backflow and it may spray out. An easy way to store this filter when you're not using it is just save the bottom half of the two liter bottle you cut in half and drop the filter in it ,holds it perfectly. This cheap 2 stage heated oil water purifier can also be used to both purify water and cook at the same time.
- How to Recycle Old Used Laptop Batteries to make a DIY 24V 72AH Emergency Backup Battery SystemThis project goes into the build of a 1.72kwh emergency backup battery system out of old and used laptop batteries and an old military surplus ammo box. The materials you need to build this project are lithium ion 18650 batteries from old laptops, 4X5,3X5 cell holders, ammo can, 40 Amp BMS or Battery management system, spot welder, fused nickel strip, heat shrink, kapton tape. First we determine how many batteries that we can pack inside the ammo box. In our case, we have 2 packs of 91 18650 cells , a total of 182 cells. We take the 4 X5 and 3 X 5 cell holders and connect them to make a couple of 7 x 13 cell holders. To make this 24V lithium ion battery , we need a 7S ( 7 cells in series connection) combination . A single lithium ion cell has a nominal voltage of 3.7V . To make a single long 7S configuration battery , we connect 7 groups of 26 cells in series to get the 25V nominal voltage. The cells used in the build are Samsung ICR18650 - 28A with a capacity of 2800Mah .The cells are rewrapped with heat shrink and added an insulator disk at the positive side of the cell for safety. The cells are installed on the holder in such a way that the first 26 cells are in a same polarity and are connected in parallel. Next 26 cells are installed with opposite polarity and is the connected in series with the first 26 cells . The rest of the cells are connected in the similar way to make a final 7S 2P ( 7 series and 2 Parallel ) configuration with max capacity of 26 X 2.8mah or 72.8 amp hours. A four wide fused nickel strip is used to connect the batteries in series. The nickel strip is placed over the first 4 cells and spot welded in place using the sunkko spot welder. Each cell is individually fused in case there is short circuit or malfunction. The nickel strip connects the first two rows in parallel and then connects the next two rows in series . Similarly, to complete the series connections, the nickel strips are placed and welded on the opposite side of the pack in such a way that it wont short out the connection by coming in contact with the most negative side of the battery. We take 0.15mm standard nickel strips to connect the positive ends of the whole pack together. The last 2 rows of most positive end are connected together using the nickel strip . Small pieces of nickel strips are placed across these two rows to connect them in parallel . The pieces are bent so that it can be connected to a separate copper busbar. The separate 2 battery pack of 7 X 13 cells are connected together by the nickel fuse strip in such a way that one of the pack is flipped on top of the other. The nickel strip that connects the first 3 connection on the 1st pack is bent to connect the 4th connection on the other pack. A 90 degree bent on the last row of the 4p fused nickel strip is welded on to the first battery pack. A piece of kapton tape is placed over the nickel strip to insulate it and hold it together. The bent nickel strip on the first pack is placed on the other pack is such a way that the fuses are perfectly aligned . Then it is welded using a spot welder. A one sixteenth inch ABS plastic is placed in between the two packs. The second pack is now slowly folded over the top of the first pack. The whole pack is then wrapped around with the kapton tape so that it doesn't move around. The last three unconnected terminals on one side of the battery pack is connected to the single row of unconnected terminal on the other side with help of four nickel strips. The 4p fused nickel strip is cut to connect the 3 sides and the other side. To connect the main negative and the positive tabs , we attach a THHN copper wire across the both the terminal ends. The extended nickel connections are folded across the wire to hold it into place and soldered . The terminal wires are then connected together with XT90 connector. Next step is to connect the BMS or Battery management system to the pack . This is a small circuit board which is used to protect each cells of the battery pack from overcharging and becoming unbalanced and getting damaged. It stop the over draining when the cells are fully charged. The BMS used here is a 7S 24V with charge current of 20A and discharge current of 40A. It has two negative leads, one connecting the battery and the other for charging and discharging. The BMS also has 8 sense or balancing wires which are connected to each series connections on the battery. The black wire is connected to the most negative terminal of the battery. The first red wire is connected to the first series connected group of cells, the second red wire is connected to the second series connected cells and so on. The last red wire is connected to the main positive terminal of the battery. A heat shrink is wrapped around the whole battery pack for added safety . Before inserting the battery pack into the ammo box, a hole is drilled on the back side of the ammo can to allow the cables from the battery to pass through. Also a small piece of one sixteenth inch ABS plastic is placed at the bottom of the ammo box as a support and insulation. The battery is slowly dropped into the box . The BMS is placed on the top and is connected to the XT90 connector and the balance wires from the battery. The B- terminal on the BMS is connected to the XT90 connector on the battery. The black wire on the BMS is the charge and discharge lead. To provide extra insulation between the battery pack and the the ammo box ,we attach two pieces of the insulting ABS sheet on either side of the box. The lid is put back on the box and the battery build is complete.