Treatment process of betaine production wastewater

A technology for treating process and producing wastewater, applied in water/sewage treatment, heating water/sewage treatment, adsorption water/sewage treatment, etc. Better processing results

Active Publication Date: 2020-06-09
张甘泉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the defects of high processing energy consumption and poor removal effect in the prior art, the present invention introduces adsorption, flocculation, ion adsorption and other technologies to treat betaine production wastewater, so that trimethylamine and other salts in the wastewater can be completely removed

Method used

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  • Treatment process of betaine production wastewater

Examples

Experimental program
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Effect test

Embodiment 1

[0021] The concentration of trimethylamine in the betaine wastewater to be treated is 921mg / L, and the COD is 9803mg / L. First, acid solution is added to the wastewater to be treated to adjust the pH value to 3, and diatomite adsorbent 8mg / l and p-nitrogen Chlorobenzene 0.3mg / L, stirred and reacted at 35°C for 20min, solid-liquid separation was carried out after the reaction was completed; quicklime was added to the supernatant to adjust the pH value to 9, and then PAC and PAM 18mg / L were added for flocculation and sedimentation; The constant flow pump pumps the treated wastewater into the ion resin column for ion adsorption operation. The adsorption treatment time is 2.5 hours; the treated wastewater is sent to the MVR evaporator, and the evaporation concentration temperature is 110 ° C. When the solid content of the remaining liquid Stop evaporation when reaching 5%, then carry out solid-liquid separation, after processing finishes, the concentration of trimethylamine in the s...

Embodiment 2

[0025] The concentration of trimethylamine in the betaine wastewater to be treated is 1011mg / L, and the COD is 12385mg / L. Firstly, acid solution is added to the wastewater to be treated to adjust the pH value to 3.5, and clay adsorbent 9mg / l and p-nitrochlorobenzene are added. 1mg / L, stirring and reacting at 35°C for 15min, solid-liquid separation after the reaction is completed; add quicklime to the supernatant to adjust the pH value to 9, then add PAC and PAM 20mg / L for flocculation and sedimentation; use a constant flow pump The treated wastewater is pumped into the ion resin column for ion adsorption operation, and the adsorption treatment time is 2 hours; the treated wastewater is sent to the MVR evaporator, and the evaporation concentration temperature is 110°C. When the solid content of the remaining liquid reaches 8% Stop evaporation, and then carry out solid-liquid separation, after processing is finished, the concentration of trimethylamine in the solution is 18mg / L, ...

Embodiment 3

[0029] The concentration of trimethylamine in the betaine wastewater to be treated is 982mg / L, and the COD is 10321mg / L. Firstly, acid solution is added to the wastewater to be treated to adjust the pH value to 4, and clay adsorbent 9mg / l and p-nitrochlorobenzene are added. 1.2mg / L, stirred and reacted at 38°C for 25min, separated the solid and liquid after the reaction was completed; added quicklime to the supernatant, adjusted the pH value to 10, and then added PAC and PAM 25mg / L for flocculation and sedimentation; adopted constant flow The pump pumps the treated wastewater into the ion resin column for ion adsorption operation. The adsorption treatment time is 2 hours; the treated wastewater is sent to the MVR evaporator, and the evaporation concentration temperature is 110 ° C. When the solid content of the remaining liquid reaches 10 %, stop evaporation, and then carry out solid-liquid separation. After the treatment is completed, the concentration of trimethylamine in the...

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Abstract

The invention belongs to the technical field of sewage treatment, and particularly relates to a treatment process of betaine production wastewater. The method comprises the following steps: adding anadsorbent and p-nitrochlorobenzene into to-be-treated wastewater for adsorption treatment, and carrying out solid-liquid separation after the reaction is finished; then adding PAC and PAM for flocculating settling; pumping the treated wastewater into an ion resin column, and carrying out ion adsorption operation; and sending the treated wastewater into an MVR evaporator, and then carrying out solid-liquid separation. The betaine production wastewater containing trimethylamine is treated by the method, the content of trimethylamine in the treated wastewater is less than 10ppm, and the effectivetreatment rate reaches 97.7% or above. The adsorbent adsorption, flocculation, ion resin adsorption and evaporation are combined, and the method is different from a traditional treatment process in the field and is better in treatment effect.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a treatment process for betaine production wastewater. Background technique [0002] Betaine is a kind of alkaloid, which widely exists in animal and plant tissues. It is a quaternary ammonium water-soluble alkaloid, which is widely used in medicine, daily chemical, chemical production and other fields. It plays a very important role in the metabolism of nutrients. It is a secondary product of metabolism and a very important osmotic adjustment substance. It is very soluble in water, easily soluble in methanol and ethanol, and hardly soluble in ether. Through the decomposition reaction of concentrated potassium hydroxide solution, trimethylamine can be produced. It is hygroscopic, easy to deliquescence, and releases trimethylamine, and is resistant to high temperature. [0003] In the process of producing betaine in the prior art, due to production needs, an excessiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C02F101/38C02F1/28C02F1/42C02F1/52C02F1/56
CPCC02F1/04C02F1/286C02F1/42C02F1/5245C02F1/56C02F1/66C02F9/00C02F2001/425C02F2101/38
Inventor 罗良胜
Owner 张甘泉
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