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1

Even though you are not drinking this water, you are using it for showers and for washing dishes - so it probably needs to be treated nearly as seriously as drinking water. The main methods are filtration, treatment with floculants, thermal treatment and chlorination. Chlorination is a widely used method. Chlorine is present in most disinfected drinking-...


2

You should treat it like a (small) swimming pool. Maintain the free available chlorine (FAC) level between 1 - 3 parts per million (PPM). PPM is basically the same as milligrams per liter. So for 8000 liters you need 8 - 24 grams of chlorine. I would use calcium hypochorite powder/granules, which is commonly 65% Ca(ClO)2 by weight; so you will need 12.3 - 36....


3

Besides the suggestions above some things you might try: Oxygenation: a small pump set up in the tank pumping the water into the air gap above water float level you have or an air pump pumping air into the water might help with some of the issues. The pump can be placed on a timer to cut down the electrical expense. Refreshing the water on a regular basis. ...


1

Since this is for a "not for drinking", unfiltered, untreated, non-potable water storage tank. It seems your goal is just to reduce the levels of bacteria/fungi/algae in the water. If you can get the interior water temperature over 50 deg C, you start killing off the stuff living in the water. With 40 deg C in the shade, it sounds like you have lots of ...



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