Method and device for utilizing sewage containing ammonia and sodium

A technology of wastewater and equipment, applied in the field of ammonia, can solve the problems of destroying ecological balance, large residual amount, unable to obtain sodium salt, etc., and achieve the effect of saving energy and saving energy.

Active Publication Date: 2015-05-13
RUANSHI CHEM CHANGSHU
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Problems solved by technology

[0002] With the development of modern industry, the shortage of water resources has become increasingly prominent. At the same time, sewage contains a large amount of residual ammonia nitrogen and various sodium ions. Sodium-containing wastewater is generally NACL, NASO4. In order to save water resources, industrial wastewater needs to be reused, so that To ensure the sustainable supply and demand of fresh water resources, most of the existing sewage treatment is treated by dosing method, using acid and alkali neutralization, which will add a lot of excess metal ions. The disadvantage of using dosing method to treat water resources is that it will destroy the ecological balance. In addition, the

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  • Method and device for utilizing sewage containing ammonia and sodium
  • Method and device for utilizing sewage containing ammonia and sodium

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[0042] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0043] see figure 1 , figure 2 , the embodiment of the present invention includes:

[0044] A method for utilizing ammonia and sodium-containing waste water resources, comprising the steps of:

[0045] The first step: put ammonia nitrogen and sodium-containing waste water into the deamination reactor, add alkaline substance NaOH through an alkali feeder, and NaOH is used as a deamination agent in the present invention; NH in the waste water in the deamination reactor Convert to NH3, the specific method and chemical reaction equation are: the first reaction formula is: NaOH+NH4CL=NaCL+NH3↑+H2O, the second reaction formula is: (NH4)2SO4+2NaOH=NA...

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Abstract

The invention discloses a method and device for utilizing sewage containing ammonia and sodium. The method comprises the steps of deamination reaction, denitrification reaction, gas-liquid separation, triple-effect multistage evaporation, evaprative crystallization and freezing crystallization, electrodialysis and sodium filteration membrane, and concentration of reverse osmosis membrane, so that distilled water and membrane deion pure water are recovered, and the resource utilization of sole sodium chloride and sodium sulfate is realized.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a method and equipment for utilizing ammonia-containing and sodium-containing waste water resources. Background technique [0002] With the development of modern industry, the shortage of water resources has become increasingly prominent. At the same time, sewage contains a large amount of residual ammonia nitrogen and various sodium ions. Sodium-containing wastewater is generally NACL, NASO4. In order to save water resources, industrial wastewater needs to be reused, so that To ensure the sustainable supply and demand of fresh water resources, most of the existing sewage treatment is treated by dosing method, using acid and alkali neutralization, which will add a lot of excess metal ions. The disadvantage of using dosing method to treat water resources is that it will destroy the ecological balance. In addition, the separation and extraction of ammonia technology is adopted. The ...

Claims

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Application Information

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IPC IPC(8): C02F9/10C01D3/06
CPCC01D3/06C02F1/048C02F1/22C02F1/441C02F1/442C02F1/4693C02F9/00C02F2101/10C02F2101/16C02F2103/04C02F2301/08
Inventor 阮玉根
Owner RUANSHI CHEM CHANGSHU
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