High-salt industrial wastewater resource recovery treatment system and method

A technology for industrial wastewater and resource recovery, which is applied in water/sewage treatment, chemical instruments and methods, water/sewage multi-stage treatment, etc. It can solve the problems that the hardness cannot meet the bipolar membrane, the influence of the electrolysis device, and the blocking of the membrane.

Pending Publication Date: 2020-09-18
国能朗新明环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hardness of the incoming water cannot meet the requirements of the bipolar membran

Method used

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  • High-salt industrial wastewater resource recovery treatment system and method
  • High-salt industrial wastewater resource recovery treatment system and method
  • High-salt industrial wastewater resource recovery treatment system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Such as figure 1 As shown, a high-salt industrial wastewater resource recovery treatment system includes a reverse osmosis device 1 and a bipolar membrane electrodialysis device 2, and an induced crystallization device 3 is arranged between the reverse osmosis device 1 and the bipolar membrane electrodialysis device 2;

[0061] Reverse osmosis device 1 is used for concentrating incoming water;

[0062] The bipolar membrane electrodialysis device 2 is used to hydrolyze and ionize water molecules to form recoverable acid and alkali;

[0063] Such as figure 2 As shown, the induced crystallization device 3 includes a body 31, a water inlet 32 ​​arranged at the bottom of the body 31, a dosing port 33, a crystal particle discharge port 34, a seed crystal injection port 35 arranged at the top side of the body 31, and a crystal seed injection port arranged at the body 31. The water outlet 36 on the side opposite to the seed crystal injection port 35 at the top; the dosing po...

Embodiment 2

[0065] Such as image 3 As shown, a high-salt industrial wastewater resource recovery treatment system includes a reverse osmosis device 1 and a bipolar membrane electrodialysis device 2, an induced crystallization device 3 is arranged between the reverse osmosis device 1 and the bipolar membrane electrodialysis device 2, and the induced A second reverse osmosis device 4 is also arranged between the crystallization device 3 and the bipolar membrane electrodialysis device 2;

[0066] Reverse osmosis device 1 is used for concentrating incoming water;

[0067] The bipolar membrane electrodialysis device 2 is used to hydrolyze and ionize water molecules to form recoverable acid and alkali;

[0068] The induced crystallization device 3 includes a body 31, a water inlet 32 ​​arranged at the bottom of the body 31, a dosing port 33, a crystal particle discharge port 34, a seed crystal insertion port 35 arranged at the top side of the body 31, and a crystal seed injection port 35 arra...

Embodiment 3

[0071] Such as Figure 4 As shown, a high-salt industrial wastewater resource recovery treatment system includes a reverse osmosis device 1 and a bipolar membrane electrodialysis device 2, an induced crystallization device 3 is arranged between the reverse osmosis device 1 and the bipolar membrane electrodialysis device 2, and the induced A second reverse osmosis device 4 is also arranged between the crystallization device 3 and the bipolar membrane electrodialysis device 2, and a water tank 5 is arranged between the second reverse osmosis device 4 and the bipolar membrane electrodialysis device 2;

[0072] Reverse osmosis device 1 is used for concentrating incoming water;

[0073] The bipolar membrane electrodialysis device 2 is used to hydrolyze and ionize water molecules to form recoverable acid and alkali;

[0074]The induced crystallization device 3 includes a body 31, a water inlet 32 ​​arranged at the bottom of the body 31, a dosing port 33, a crystal particle discharg...

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Abstract

The invention provides a high-salt industrial wastewater resource recovery treatment system and method. The high-salt industrial wastewater resource recovery treatment system comprises a reverse osmosis device and a bipolar membrane electrodialysis device, and an induced crystallization device is arranged between the reverse osmosis device and the bipolar membrane electrodialysis device; and the reverse osmosis device is used for concentrating incoming water, the bipolar membrane electrodialysis device is used for hydrolyzing and ionizing water molecules to form recyclable acid and alkali, andthe induced crystallization device is used for removing heavy metal ions and/or Ca<2+> in the concentrated incoming water so as to meet the liquid inlet requirement of the bipolar membrane electrodialysis device. The invention aims to solve the problem of discharge of industrial wastewater containing high-concentration salt and heavy metals. The reverse osmosis device and the bipolar membrane electrodialysis device are combined, and the induced crystallization device is arranged between the two, so that high water yield can be obtained, water resources are saved, hard ions and heavy metal ions in the wastewater can be removed, the risk of membrane blockage is reduced, high-value acid and alkali byproducts are generated, and the problems of low value of byproduct crystalline salt and limited market demand are solved.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a system and method for recycling and treating high-salt industrial wastewater resources. Background technique [0002] Industrial wastewater from metallurgy washing wastewater, coal-fired power plant desulfurization wastewater, coal chemical terminal wastewater, high-salinity mine water, etc. often contain high concentrations of salt and heavy metals and become a major environmental problem. High-salt wastewater is a major environmental problem in industrial wastewater treatment projects. A very troublesome problem. The treatment effect of sewage is greatly affected by salt due to traditional biological treatment methods. High-concentration inorganic salts can destroy the cell membranes of microorganisms and enzymes in bacteria by increasing the environmental osmotic pressure, thereby destroying the physiological activities of microorganisms. Wastewater biological treatm...

Claims

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Application Information

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IPC IPC(8): C02F9/06C02F101/10C02F101/20C02F101/30
CPCC02F1/441C02F1/4695C02F5/02C02F9/00C02F2001/427C02F2001/5218C02F2101/10C02F2101/20C02F2101/30
Inventor 陆梦楠赵焰徐志清郭旭涛陈雪苏双青杨燕孙斌范鑫帝
Owner 国能朗新明环保科技有限公司
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