Gulonic acid denatrium resin regenerated waste water processing method

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 treatment cost, high labor intensity, instability, etc. Simple process operation, reduce energy consumption, avoid the effect of physical distillation

Active Publication Date: 2016-02-03
NINGXIA QIYUAN PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides an improved way to treat water by combining different technologies together. This means that no harmful or dangerous chemicals can be used during this separation process instead of being added separately. Additionally, it simplifies the overall operation without requiring long hours while still producing effective results at low cost compared to traditional methods like ion exchange resin columns alone.

Problems solved by technology

This patented technical problem addressed in this patent relates to finding ways to efficiently treat various types of redox flow batteries (RFBs) that contain residual alkali metal salts during their lifespan cycle. Existing solutions such as physically separating them from each other require significant amounts of heat input while maintaining stable properties over time.

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 of 0.5% NaCl aqueous solution, 10L of waste water (COD: 34570mg / L, H + Concentration: 14.45mol / L, conductivity: 246ms / cm, Cl - Concentration: 30000mg / L, hardness: 4763mg / 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 0.06MPa, and the pressure of fresh water to 0.045MPa. 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=33920mg / L, pH=2.3, conductivity=6.45ms / cm, Cl

Embodiment 2

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

[0022] (1) Electrodialysis: 10L of 1% NaCl aqueous solution, 10L of waste water (COD: 29545mg / L, H + The concentration is 17.78mol / L Conductivity: 176ms / cm, Cl - Concentration: 40500mg / L, hardness: 5004mg / 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 0.04MPa, and the pressure of fresh water to 0.030MPa. 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=28865mg / L, pH=2.4, conductivity=5.08ms /

Embodiment 3

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

[0027] (1) Electrodialysis: 10L of 0.5% NaCl aqueous solution, 10L of waste water (COD: 25805mg / L, H+ concentration of 10mol / L, conductivity: 129ms / cm, Cl - Concentration: 32600mg / L, hardness: 3820mg / 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 0.06MPa, and the pressure of fresh water to 0.045MPa. 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=24690mg / L, pH=3.2, conductivity=7.98ms

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PUM

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Abstract

The invention relates to a gulonic acid denatrium resin regenerated waste water processing method. The method comprises the following processes: 1) electrodialysis: respectively adding a NaCl aqueous solution, gulonic acid denatrium resin regenerated waste water and pure water in an electrode water chamber, a fresh water chamber and a concentrated water chamber of an electrodialyzer, turning on the equipment for desalting, stopping operation when the conductivity of the concentrated water in the concentrated water chamber is 10-15 times higher than the conductivity of the fresh water in the fresh water chamber, and replacing the concentrated water; 2) taking the concentrated water in the step 1) as an eluate for resin regeneration processing by taking NaOH as a resin regenerated solution; and 3) sending the fresh water in a waste water biochemical treatment system for being processed. According to the invention, an electrodialysis technology, a waste water emission-reduction method and a waste water biochemical treatment method are effectively combined, an organic matter and an inorganic matter in waste water are separated and respectively being processed, energy loss is reduced; a whole technical process is simple, processing speed is fast, and the method has the advantages of environmental protection and safety.

Description

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Claims

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Application Information

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Owner NINGXIA QIYUAN PHARMA
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