High-concentration organic wastewater resource utilization method
An organic wastewater, high-concentration technology, applied in chemical instruments and methods, water pollutants, waste fuels, etc., can solve the problems of raising the cost of environmental treatment of enterprises, large investment in pollution treatment facilities, and high operating costs, and achieve equipment investment costs. The effect of reducing the cost of operation and treatment, reducing environmental risks, and preventing air pollution
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[0016] Example 1
[0017] Organic waste liquid from a fine chemical plant, COD: 100,000 mg / L PH is neutral, and organic matter is mainly petroleum ether, phenol and other substances. The COD is concentrated to more than 400,000 mg by evaporative concentration, and the distillation condensate is discharged into the plant's biochemical system for processing.
[0018] Add the dried fly ash and straw powder to the concentrated solution and continue to stir until a viscous mixture is formed so that the water content is less than 85%; the mixture is transported to the drying and dehydration equipment to reduce the water content in the mixture to less than 5% , To form a solid powder, condense and collect the removed water, and send it to the factory sewage treatment system for treatment after reaching the standard for discharge or reuse. The prepared solid powder is made into solid particles with an extrusion granulator, and then packed in bags and transported to a qualified unit for inc
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[0019] Example 2
[0020] An organic waste liquid containing ammonium sulfate. The waste liquid is the residual liquid after the ammonium sulfate is recovered through two distillations. The COD is 1.23 million mg / L, the ammonia nitrogen is 34,000 mg / L, and the pH is 3.3. Solid waste.
[0021] Add calcium oxide into the stirred tank that has been put into the waste liquid, continue to stir, and a large amount of ammonia will be released. When the PH is greater than 7 and no ammonia is released, stop adding calcium oxide. The ammonia is collected through the pipeline to the absorption tower, and dilute sulfuric acid is used. Collect and generate ammonium sulfate. This part of the collected liquid is sent back to the ammonium sulfate production system of the factory through a pipeline to realize the recycling of ammonia. Mix the waste liquid with neutral pH after deamination with dry fly ash and straw powder to form a viscous semi-fluid dynamic mixture with a water content of about
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