Brine wastewater advanced treatment and efficient recovery utilization technology

A technology for advanced treatment and waste water, which is applied in water/sewage treatment, heating water/sewage treatment, oxidized water/sewage treatment, etc. It can solve the problems of concentrated salty waste water seepage, non-recyclable, large footprint, etc. Achieve the effects of long-term stable operation, recycling, low operating costs, and low operating costs

Inactive Publication Date: 2019-11-12
JIUTAI ENERGY INNER MONGOLIA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the concentrated salt wastewater in the industrial park, it is uniformly discharged to the drying pond, and then evaporated and crystallized, and the solid waste is treated as hazardous waste in a unified manner. There are large area, high investment, slow evaporation, long processing time, and waste salt obtained. It is a solid waste that needs to be reprocessed, and the concentrated salt wastewater may leak and cause environmental pollution.
[0005] It is also a waste of water resources that enterprises discharge concentrated salty wastewater and cannot recycle it.

Method used

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  • Brine wastewater advanced treatment and efficient recovery utilization technology
  • Brine wastewater advanced treatment and efficient recovery utilization technology
  • Brine wastewater advanced treatment and efficient recovery utilization technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Example 1 Deep treatment of concentrated salt wastewater and efficient recycling process

[0062] Combine figure 1 , The advanced treatment and efficient recycling process of concentrated salt wastewater, the specific steps are as follows:

[0063] (1) The concentrated salt wastewater from the concentrated water recovery unit enters the nanofiltration unit 1, and is processed by the nanofiltration unit.

[0064] (2) After the concentrated salt wastewater is processed by the nanofiltration unit, the nanofiltration purified water, which accounts for 80% of the total weight of the concentrated salt wastewater, enters the reverse osmosis unit 2, and the reverse osmosis purified water is recycled to the circulating water system through the treatment of the reverse osmosis unit , The recovery volume accounts for 59.5% of the total weight of concentrated salt wastewater.

[0065] (3) The nanofiltration concentrated water of the cashier unit 1 accounting for 20% of the total weight of ...

Embodiment 2

[0071] Example 2 Deep treatment of concentrated salt wastewater and efficient recycling process

[0072] Combine figure 1 Further, in the process for advanced treatment and efficient recycling of concentrated salt wastewater of the present invention, the detailed steps are as follows:

[0073] (1) The concentrated salt wastewater from the concentrated water recovery unit 9 enters the material inlet 11 of the nanofiltration unit and is processed by the nanofiltration unit 1;

[0074] (2) After the concentrated salt wastewater is processed by the nanofiltration unit 1, the nanofiltration purified water, which accounts for 80% of the total weight of the concentrated salt wastewater, enters the water inlet 21 of the reverse osmosis unit through the clean water outlet 12 of the nanofiltration unit, and passes through the reverse osmosis unit 2. Recovered reverse osmosis purified water passes through the purified water outlet 22 of the reverse osmosis unit to the circulating water system 9...

Embodiment 3

[0082] Combine figure 1 The detailed steps of the advanced treatment and high-efficiency recycling process for concentrated salt wastewater of the present invention are as follows:

[0083] (1) The concentrated salt wastewater from the concentrated water recovery unit 9 first enters the multi-media filter 36, the activated carbon filter 37, the ultrafiltration device 38, and the weak acid anode 39 in sequence. The concentrated salt wastewater after the above treatment enters the nanofiltration unit The material inlet 11 is processed by the nanofiltration unit 1;

[0084] (2) After the concentrated salt wastewater is processed by the nanofiltration unit 1, the nanofiltration purified water, which accounts for 80% of the total weight of the concentrated salt wastewater, enters the water inlet 21 of the reverse osmosis unit through the clean water outlet 12 of the nanofiltration unit, and passes through the reverse osmosis unit 2. Recovered reverse osmosis clean water passes through t...

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Abstract

The invention belongs to technical field of chemical brine wastewater treatment, and particularly relates to a brine wastewater advanced treatment and efficient recovery utilization technology. Brinewastewater from a brine wastewater recycling unit flows through a nanofiltration unit, and is further subjected to treatment of an oxidized unit, an evaporation concentration unit, a sodium sulfate freezing crystallization unit, a mirabilite melt crystallization unit, a reverse osmosis unit, a high concentration EDM device I, a sodium chloride evaporative crystallization unit, a carnallite dryingunit, the treatment cost of the brine wastewater is significantly lowered, recycled water can serve as circulating water, a sodium sulfate sodium chloride industrial salt and carnallite are obtained,zero discharge of the brine wastewater is achieved, and environmental pollution is reduced.

Description

Technical field [0001] The invention belongs to the technical field of chemical concentrated salt wastewater treatment, and specifically relates to a process for advanced treatment and efficient recycling of concentrated salt wastewater. Background technique [0002] In chemical production, concentrated salt wastewater will inevitably be produced. If it is discharged directly, it will cause environmental pollution. The "Water Pollution Prevention and Control Action Plan", the "Implementation Opinions of the People's Government of Inner Mongolia Autonomous Region on the Implementation of the Water Pollution Prevention and Control Action Plan" and the "Ordos City Water Pollution Prevention and Control Work Implementation Plan (2016-2020)" have all proposed water pollution prevention and control work. related requirements. [0003] Water resources in Inner Mongolia are relatively scarce. In order to save water and improve water resource utilization, it is necessary to carry out advan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C01D3/06C01D5/00C01D3/22
CPCC01D3/04C01D3/22C01D5/004C02F1/001C02F1/04C02F1/441C02F1/442C02F1/444C02F1/72C02F9/00
Inventor 段永升张庆海刘鑫邵永飞卢振林李先亮
Owner JIUTAI ENERGY INNER MONGOLIA
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