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Treatment method of carbonate-containing wastewater

A treatment method, carbonate technology, applied in the direction of alkali metal carbonate, water/sewage treatment, water treatment parameter control, etc., can solve the problems of high operating cost, large amount of miscellaneous salt, large consumption of chemicals, etc.

Inactive Publication Date: 2021-05-18
BEIJING NEWBIOLINK TECH DEV
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Problems solved by technology

This process needs to add a large amount of lime to remove the carbonate in the wastewater, and at the same time add a large amount of acid for neutralization. The consumption of chemicals is huge, the amount of sludge is huge, the operating cost is huge, the amount of miscellaneous salt is large, and the area is large. Great negative impact on the environment

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  • Treatment method of carbonate-containing wastewater

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Embodiment Construction

[0030] The following is an introduction to the implementation case of the mine water treatment project containing carbonate.

[0031] (1) The flow rate is 20000m 3 Mine water containing carbonate per day (TDS≤2400mg / L, carbonate≤1100 mg / L, total hardness≤90 mg / L) enters the adjustment pool through the pipeline, and after the water quality and quantity are adjusted, it enters the multi-media through the lift pump filter.

[0032] (2) After preliminary filtration by the multi-media filter, it enters the ultrafiltration system through the lifting pump, and the filtrate filtered by the ultrafiltration membrane enters the reverse osmosis system through the reverse osmosis high-pressure pump.

[0033] (3) Concentrated water volume of reverse osmosis system is 11350m 3 / d, the concentrated water of the reverse osmosis system enters the primary resin softening system through the lift pump, and the produced water of the reverse osmosis system enters the reuse pool.

[0034] (4) Thro...

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Abstract

The invention discloses a treatment method of carbonate-containing wastewater. The carbonate-containing wastewater passes through a regulating reservoir, a multi-medium filter, an ultrafiltration system, a reverse osmosis system, a primary resin softening system, a concentrated water reverse osmosis system, an advanced oxidation system, a tubular microfiltration system, a secondary resin softening system, a high-pressure reverse osmosis system, a sludge filter pressing system, an evaporation freezing crystallization system, an evaporation crystallization system, a wastewater treatment system, a recycling water tank and the like for process treatment to obtain sodium carbonate decahydrate product salt and by-products sodium sulfate and sodium chloride product salt. The treatment method has the advantages of strong anti-pollution capability, high concentration multiple, high recovery rate, high crystallized salt quality, high automation degree, low investment and low operation cost.

Description

technical field [0001] The invention relates to a treatment method for carbonate-containing wastewater, which belongs to the field of water treatment in environmental protection. Background technique [0002] Currently, chemical softening precipitation + filtration + multi-stage reverse osmosis + evaporation crystallization are commonly used in the treatment of carbonate-containing wastewater in chemical industry parks and mines. This process needs to add a large amount of lime to remove the carbonate in the wastewater, and at the same time add a large amount of acid for neutralization. The consumption of chemicals is huge, the amount of sludge is huge, the operating cost is huge, the amount of miscellaneous salt is large, and the area is large. Negative impact on the environment is relatively large. [0003] Zero discharge of mine water and industrial wastewater is strictly enforced by environmental protection policies. In the field of carbonate-containing wastewater treat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C02F5/00C01D7/24C01D7/00C01D5/00C01D3/04C02F1/04C02F1/44C02F1/52C02F1/72
CPCC02F9/00C02F5/00C01D7/24C01D7/00C01D5/00C01D3/04C02F1/001C02F1/444C02F1/441C02F1/72C02F1/04C02F1/52C02F2209/08C02F2209/11C02F2209/055
Inventor 王晓春王伟古进芳
Owner BEIJING NEWBIOLINK TECH DEV
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