Since the grey water is Flowing that means your new best friend is gravity. Pic a spot in that flow trench it out. (The length depends on how grey that water is) By using a combination of sand and mineral rocks (small chunks) you have a inline filtering system. Down the line select a good spot for a drop off into a man made hole or a natural depression. If you desire this water to be potable just add Archaea microbes. They will breakdown all compounds into elemental form and chelate any and all toxic materials into their non toxic state. (depending on the volume multiple separate trenches leading to a main trench or the hole may be required. The only factor that needs your attention is time and length of trench purifying system. The black and grey water residential units have been designed and tested. Soon to hit the markets. Forgot to mention all of this is free. Your local materials, your design, your hard work, your water. The Archaea microbes cost 6 cents a day to use for about 1,000 gallons of treating water. All good ideas on this thread. Nice to have helpful options.
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Thanks Guy.Very simple and straight forward method and cost effective too!I hope Archaea microbes are readily available in the local markets in South Africa.I will definitely apply this method to a practical case study i will be busy with in the following few months.
They are not currently available in South Africa. They were used in the diamond and gold mining operations for many years. The formula I work with is for agriculture. In case you were interested. I have a complete off the grid program that is equally inexpensive. The grey water is only 10% of the overall program. Never have to worry about clean water, food or energy ever again. No magic. Just pure mother nature and taking the time to use what the lord has blessed us with. If you wish my skype: guy_mcgowen email is biozomesales@biozome.com. Contact me any time.