Efficiently use low quality irrigation water: Use of reclaimed municipal wastewater is important for conservation of natural resources. Reclaimed water can be satisfactorily used if amended with gypsum and water-soluble polymers.
For the dry wall to be complete use gypsum board screw it using the screws provided a few millimeters into the board so as to ensure a smooth finish once painted. Screw all the boards on both side of the aluminum frame work to get a wall of the intended thickness.Once the boards are fixed, pick the joint strip provided and paste it with gypsum adhesive to cover the joint between the boards and smoothen the ends such that it appears as one big board.
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The phosphate industry found at least one regular consumer of one of its waste products called silicofluorides. Municipal water treatment facilities used this waste product and based on recent estimates; the phosphate industry sells approximately 200,000 tons of silicofluorides (hydro-fluorosilicic acid & sodium silicofluoride) to US communities each year for use as a water fluoridation agent, (Bromwell and Carrier, Inc.). 200,000 tons of this particular phosphate waste is a small amount relative to what is produced in the mining process overall.
Florida Phosphate Industry Refusing To Accept Safety Standard In its 2006 report, the U.S. Agency for Toxic Substances and Disease Registry stated the federal government has relied upon the ”five picocuries” per gram (radiation/mass) of soil standard at many sites and listed some in Pennsylvania, New Mexico, New York and Michigan as examples. These areas produce little phosphate rock relatively to Florida. However, Florida officials considered the threshold to be ”overly conservative,” the federal agency’s report noted.
Decreases the toxic effect of NaCl salinity: Calcium from gypsum has a physiological role in inhibiting the uptake of sodium by plants. Thus plant are mitigate the sodium toxicity, which is more pronounced in the salt affected soils.
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