Comprehensive treatment method and comprehensive treatment system for recycling of fosetyl-aluminum waste water
A kind of aluminum triethylphosphonate, comprehensive treatment technology, applied in chemical instruments and methods, compounds of periodic table Group 5/15 elements, organic chemistry, etc. problems, to achieve good economic and environmental benefits, to solve the effect of dealing with instability
Active Publication Date: 2017-07-21
利民化学有限责任公司
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Problems solved by technology
The limitations of this method are as follows: 1) the system is an exothermic reaction, which is carried out in a reaction tank. Adding acid first and then aluminum hydroxide mud is prone to acid splashing, which has potential safety hazards, and there are uneven stirring, The problem of reaction dead angle; 2) The aluminum sulfate produced by the reaction is used for wastewater treatment after concentrated crystallization and crushing. Although it belongs to waste reuse, the process consumes energy and has no economic benefits. The crushing process is easy to generate dust, which is still harmful to the environment
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[0031] Combine below figure 1 and figure 2 The method of the present invention is described in detail:
[0032] The method for the comprehensive treatment of ammonia-containing and aluminum-containing waste water produced in the production process of aluminum triethylphosphonate as a resource, the steps are:
[0033] In the first step, the mother liquor wastewater from the workshop is collected and entered into the sump 1 of the workshop, and then pumped into the reactor 2, and 11-12% ammonia water is added to the reactor 2 while stirring to adjust the pH of the wastewater to 6-7, and the reaction generates hydrogen Aluminum oxide and ammonium sulfate. The reaction equation is as follows:
[0034] Al 2 (SO 4 ) 3 +6NH 4 OH→3(NH 4 ) 2 SO 4 +2Al(OH) 3 ↓
[0035] In the reaction kettle 2, part of the supernatant is overflowed to the ammonium sulfate mother liquor tank 10, and the solid-liquid mixture containing aluminum hydroxide and ammonium sulfate enters the reacti...
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The invention discloses a comprehensive treatment method and a comprehensive treatment system for recycling of fosetyl-aluminum waste water. The method includes adding ammonium hydroxide into waste water to generate aluminum hydroxide, and recycling the aluminum hydroxide; subjecting a filter liquor obtained after aluminum hydroxide removal to evaporation and deamination, and recycling ammonium sulfate; feeding the aluminum hydroxide into an acidification kettle, and adding concentrated sulfuric acid to obtain aluminum sulfate; taking the aluminum sulfate as a raw material to composite fosetyl-aluminum. The system comprises an aluminum hydroxide recycling system, an ammonium sulfate recycling system, an aluminum sulfate preparation system and a fosetyl-aluminum preparation system. The comprehensive treatment method and the comprehensive treatment system for recycling of the fosetyl-aluminum waste water have the advantages that zero emission is achieved, heat sources are utilized sufficiently, and high economic and environmental benefits are achieved.
Description
technical field [0001] The invention relates to a method for resource comprehensive treatment of ammonia-containing and aluminum-containing waste water produced in the production process of aluminum triethylphosphonate. Precipitating aluminum by adding ammonia water, recovering ammonium sulfate by evaporation, using aluminum in a product synthesis process, distilling water for water distribution in workshops, and utilizing waste water as resources belong to the technical field of waste water treatment. Background technique [0002] Patent CN 102249474 A (method for treating thiamine wastewater produced in the production process of aluminum triethylphosphonate) introduces: add ammonia water to the wastewater, filter aluminum hydroxide through a ceramic membrane and dry it for aluminum triethylphosphonate The filling material of wettable powder, the filtrate is recovered by three-effect evaporation and ammonium sulfate is sold as a by-product, and the distilled water is discha...
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IPC IPC(8): C07F9/142C01C1/24
CPCC01C1/24C07F9/142
Inventor 尚鸿艳孙敬权李新生张荣全王万春曹建杰孙丽梅
Owner 利民化学有限责任公司