The Endho dam, in Mexico, is considered the largest septic tank in the world. There are 1250 hectares of sewage, from Mexico city (CDMX) and the state of Mexico. Two important indicators of water quality are dissolved oxygen levels and degree of acidity (pH). In the case of the Endho dam, the dissolved oxygen levels are around zero, and the degree of acidity of the water measured on the pH scale is close to 2. Water with such characteristics does not hold, and is even lethal to fish, birds, plants, animals, and humans. Due to its location, the negative effects on the environment and human health, cover a large area of land and population. As time goes by, the problem tends to be worsened by the continuous residual discharges, including industrial ones, both from the CDMX and the State of Mexico. The health of the affected population began to decline since the 70s, and continues to worsen every day, due to the lack of attention to the problem by the relevant agencies and authorities. the levels of dissolved oxygen in the water and at the same time decreasing its acidification is a complex problem that did not seem to have a practical solution, even with modern water treatment plants. But there is a light at the end of the tunnel, and there is a solution based on the biology of the human eye. The eye of humans contains about 3 or 4 ml of water, and their dissolved oxygen levels and degree of acidification always remain normal (DOL 6 mg/L, pH around 7) throughout the individual’s life. Which is surprising because this water is never replaced. We were able to decipher the mechanism by which nature keeps these levels within limits suitable for health. This observational study lasted 12 years and included 6000 patients, and ended in 2002. The basic mechanism was replicated in the laboratory in 2007, and to date we have corroborated it about 200 times, in different types of water: salt water, fresh water, gray water, sewage, industrial waste, running water, stagnant water, surface water, deep water, etc., and in all cases it works properly. Our project regarding the Endho dam consists of applying our method, in this dam, to raise the levels of dissolved oxygen and significantly reduce its acidity. This is achieved simply by immersing blocks of our material in the water, the weight of which is around 10 kg, and letting them fall to the bottom. No energy is required, no greenhouse gases are emitted, no toxic or dangerous compounds are formed; and its half-life is about 25 years or more. We calculate that one block is required for every 10 square meters of surface. The main challenge to overcome is the skepticism of the authorities and the general public, since it was not foreseen that there could be such a practical solution to such a complex problem. And much less coming from another different area, in Mexico, and developed by a group of independent researchers who developed the process with their own means, without any help from the government, universities or educational centers. The problems about the cost of each block, as well as its manufacture, are, in fact, secondary problems that are likely to be solved in one way or another, because what is important is that we already have a practical solution to a problem as thorny as the serious pollution of water, the result of the intense economic activities of the region.
Well, although the initial investment is high, then there are practically no operating expenses, there is no excessive formation of slof, nor of toxic compounds. The blocks do not require energy, nor the addition of chemical compounds. There is no emission of greenhouse gases.
As in the human eye, from where we copy the procedure, the duration of the block is prolonged, at least 25 years or more. From the beginning we want to spread our new method, sensitize people and authorities, so that, eventually, they authorize and finance the placement of these blocks, which would mark a before and after in the history of the Endho dam.
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