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Iron removal device for acid-containing copper sulfate solution

A copper sulfate solution and locking device technology, applied in the field of water treatment, can solve the problems of high practical application cost of membrane separation technology, easy pollution of membrane components, and short service life of membrane, so as to reduce the amount of sludge produced and improve the environment Benefit and high recovery rate

Pending Publication Date: 2022-03-15
HANGZHOU WATER TREATMENT TECH DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitations of materials and membrane preparation processes, the actual application cost of membrane separation technology is very high, and factors such as short service life of membranes and easy contamination of membrane components also limit its application in the disposal of waste acid from pickling

Method used

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  • Iron removal device for acid-containing copper sulfate solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Process a length of 60cm, width of 70cm, and height of 120cm iron removal device, including positive electrode plate 8, negative electrode plate 14, wherein the two sides of iron removal chamber 16 are respectively placed with anode porous plate 10 and cathode porous plate 12; The perfluorosulfonic acid positive membrane 9, the positive electrode plate 8, the water distribution network 7 in the pole chamber, the water distribution plate 6, and the locking device 5 are placed in sequence on the outside of the anode porous plate 10; the bipolar membrane 13 is placed on the outside of the cathode porous plate 12, and the The electrode plate 14, the pole chamber water distribution network 7, the water distribution plate 6, and the locking device 5; the locking device 5 fixes the whole device through the water distribution plates 6 on the two outer sides, and is in the shape of a cuboid.

[0032] An anolyte inlet 1 is installed on the lower part of the water distribution plat...

Embodiment 2

[0036] The device is as in Example 1, with a chemical dosing port 11 installed at the top of the iron removal chamber 16, a mixer 15 with constant temperature heating installed in the middle, and an iron sludge discharge port 17 installed at the bottom.

[0037]Close the valve of the iron slime discharge port 17, add waste acid containing 80g / L of iron and 30g / L of copper sulfate concentration and 40g / L of sulfuric acid concentration through the dosing port 11 through the dosing port 11, and the volume added should reach the iron removal chamber 16 95% by volume. The liquid temperature is heated to 35° C. by means of a stirrer 15 with constant temperature heating. The anode chamber is equipped with 1% sulfuric acid solution, the cathode water tank is equipped with 6% sulfuric acid solution, the magnetic pump of the cathode and anode is started to make the circulation flow rate 1.2t / h, and a direct current is applied to the cathode and anode electrodes, the operating voltage is...

Embodiment 3

[0040] The device is as in Example 2.

[0041] Close the valve of the iron sludge discharge port 17, and add waste acid containing 20 g / L of iron and 100 g / L of copper sulfate concentration and 120 g / L of sulfuric acid concentration through the dosing port 11 through the dosing port 11, and the added volume should reach the iron removal chamber (16) 95% by volume. The liquid temperature is heated to 35° C. by means of a stirrer 15 with constant temperature heating. The anode chamber is equipped with 2% sulfuric acid solution, the cathode water tank is equipped with 7% sulfuric acid solution, the magnetic pump of the cathode and anode is started to make the circulation flow rate 1.5t / h, and a direct current is applied to the cathode and anode electrodes, the operating voltage is 35V, and the operating current is 350A. Deacidification is carried out by electrification, and when the pH of the solution in the iron removal chamber 16 is adjusted to 0.6, the electrification is stop...

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Abstract

The invention belongs to the technical field of water treatment, and particularly relates to a device for removing iron in acid-containing copper sulfate. The device comprises a positive electrode plate and a negative electrode plate, wherein an anode porous plate and a cathode porous plate are respectively placed on two sides of an iron removal chamber; a perfluorosulfonic acid positive membrane, a positive electrode plate, an electrode chamber water distribution net, a water distribution plate and a locking device are sequentially arranged outside the anode porous plate; a bipolar membrane, a negative electrode plate, an electrode chamber water distribution net, a water distribution plate and a locking device are sequentially arranged outside the cathode porous plate; the locking device fixes the whole device through the water distribution plates on the two outer sides and is in a cuboid shape. The method has the advantages that the membrane separation method is high in recovery rate, thorough in separation, simple to operate, high in automation degree and good in working environment, economic benefits can be brought, better environmental benefits are achieved, the use amount of alkali is saved while acid is recovered, the sludge output is greatly reduced, and the application prospect is wide.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a device for removing iron from acid-containing copper sulfate. [0002] technical background [0003] Copper sulfate is both a fertilizer and a commonly used fungicide. Bordeaux mixture, copper soap, and copper ammonium preparations are prepared from copper sulfate, quicklime, soap, and ammonium bicarbonate. Mainly used as textile mordant, agricultural insecticide, water fungicide, preservative, also used in tanning, copper electroplating, ore dressing, etc. In the chemical industry, it is used to manufacture other copper salts such as cuprous cyanide, cuprous chloride, cuprous oxide and other products. In the dye industry, it is used as a copper complexing agent for the production of copper-containing monoazo dyes such as reactive brilliant blue, reactive violet, and phthalocyanine blue. It is also a catalyst for organic synthesis, perfume and dye intermed...

Claims

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Application Information

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IPC IPC(8): C02F1/469C02F101/20
CPCC02F1/469C02F2101/203
Inventor 金可勇付晓靖胡鉴耿金水玉
Owner HANGZHOU WATER TREATMENT TECH DEV CENT
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