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A kind of treatment method of guron acid desodium resin regeneration wastewater

A resin regeneration and treatment method technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of high labor intensity, high treatment cost, instability, etc., and achieve The effect of reducing energy consumption, simple process operation, and avoiding physical distillation

Active Publication Date: 2018-07-03
NINGXIA QIYUAN PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the overall treatment effect of this method is good, it is unstable, and the labor intensity is high, the treatment cost is high, the amount of mud is large, and the reaction process is highly corrosive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A kind of processing method of gulong acid desodium resin regeneration wastewater, comprising the following process steps:

[0017] (1) Electrodialysis: 10L 0.5% NaCl aqueous solution, 10L waste water (COD: 34570 mg / L, H + The concentration is 14.45mol / L, the conductivity: 246 ms / cm, Cl - Concentration: 30000mg / L, hardness: 4763 mg / L), 5L of pure water were added to the polar water chamber, fresh water chamber and concentrated water chamber of the electrodialyzer. Open three valves and three circulating pumps, adjust the flow rate of dilute and concentrated water chambers to 200L / h, the flow rate of polar water to 50L / h, control the pressure of concentrated water to 0.06 MPa, and the pressure of fresh water to 0.045 MPa. Then slowly adjust the rectifier switch, the voltage gradually rises to 18V, and the current is 9.3A. After entering the desalination process and running for 40 minutes, the obtained fresh water: COD=33920 mg / L, pH=2.3, conductivity=6.45ms / cm, Cl - C...

Embodiment 2

[0021] A kind of processing method of gulong acid desodium resin regeneration wastewater, comprising the following process steps:

[0022] (1) Electrodialysis: 10L 1% NaCl aqueous solution, 10L waste water (COD: 29545 mg / L, H + The concentration is 17.78mol / L Conductivity: 176 ms / cm, Cl - Concentration: 40500mg / L, hardness: 5004 mg / L), and 7L pure water were added to the polar water chamber, fresh water chamber and concentrated water chamber of the electrodialyzer. Open three valves and three circulating pumps, control the flow of dilute and concentrated water chambers to 500L / h, control the flow of polar water to 150L / h, control the pressure of concentrated water to 0.04 MPa, and the pressure of fresh water to 0.030 MPa. Then slowly adjust the rectifier switch, the voltage gradually rises to 19.8V, and the current is 9.5A. After entering the desalination process and running for 45 minutes, the obtained fresh water: COD= 28865 mg / L, pH=2.4, conductivity=5.08ms / cm, Cl - Conc...

Embodiment 3

[0026] A kind of processing method of gulong acid desodium resin regeneration wastewater, comprising the following process steps:

[0027] (1) Electrodialysis: 10L 0.5% NaCl aqueous solution, 10L waste water (COD: 25805 mg / L, H+ concentration 10mol / L, conductivity: 129 ms / cm, Cl - Concentration: 32600mg / L, hardness: 3820 mg / L), 3L of pure water were added to the polar water chamber, fresh water chamber and concentrated water chamber of the electrodialyzer. Open three valves and three circulating pumps, control the flow rate of dilute and concentrated water chamber to 600L / h, control the flow rate of polar water at 100L / h, control the pressure of concentrated water to 0.06 MPa, and the pressure of fresh water to 0.045 MPa. Then slowly adjust the rectifier switch, the voltage gradually rises to 19.5V, and the current is 9.8A. After entering the desalination process and running for 35 minutes, the obtained fresh water: COD= 24690 mg / L, pH=3.2, conductivity=7.98ms / cm, Cl - Conce...

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Abstract

The invention relates to a treatment method of guronic acid desodium resin regeneration waste water, the process comprising: 1) electrodialysis: adding high-quality NaCl aqueous solution, guron acid desodium resin regeneration waste water and pure water into the extreme water chamber of the electrodialyzer , fresh water chamber and concentrated water chamber, open the equipment for desalination treatment, when the conductivity of the concentrated water in the concentrated water chamber is 10-15 times higher than that of the fresh water in the fresh water chamber, stop the operation and replace the concentrated water; 2) Process 1 ) The obtained concentrated water is used as the eluent for resin regeneration treatment using NaOH as the resin regeneration solution; 3) The fresh water obtained in process 1) is sent into the wastewater biochemical treatment system for treatment. The present invention effectively combines electrodialysis technology, waste water emission reduction method, and waste water biochemical treatment method to separate the organic and inorganic matter in the waste water and treat them separately, reducing energy consumption; the whole process is simple to operate and not only treats Fast, environmentally friendly and safe.

Description

technical field [0001] The invention relates to water pollution control and treatment technology, in particular to a treatment method of guronic acid desodium resin regeneration wastewater. Background technique [0002] Gulonic acid desodium resin is a kind of cation exchange resin, after adding sodium guronate solution to the ion exchange resin column, the Na in the solution + with the H on the resin + Gulonic acid is generated after exchange, and the H on the resin + Concentration decreases continuously, Na + The concentration is increased until the exchange efficiency drops and the resin fails. When regenerating the resin, first add NaOH solution to elute to denature the remaining protein in the resin column, then add a certain concentration of HCl solution to elute, and the H + Na on the resin can be + Replacement, and finally restore the exchange performance of the cation exchange resin. [0003] Gulonic acid desodium resin regeneration wastewater characteristics:...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 慕金凤沈伟军马晓军李学兵
Owner NINGXIA QIYUAN PHARMA