A method for combined treatment of high salt water

A high-salinity and salinity technology, applied in the field of environmental protection and comprehensive utilization of resources, can solve the problems of weak dissociation of weakly acidic resins and weakly basic resins, hazardous waste liquid discharge, and high operational hazards, and achieves low cost, The effect of reducing salinity and reducing the risk factor

Active Publication Date: 2016-08-17
鄂尔多斯市辰达环保科技有限责任公司
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Problems solved by technology

[0003] In the ion exchange method, strong acidic resins and strong basic resins have strong dissociation and a wide working pH range, but acid-base regeneration is required, hazardous waste liquid discharge is required, and the number of operational risks is relatively high, requiring professionals to operate; while weakly acidic resins and Weak alkaline resin dissociates weakly, and the working pH range is narrow, which affects the quality of finished products

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  • A method for combined treatment of high salt water

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Embodiment 1

[0017] Firstly, the high salt water in the industrial park is detected, the pH is 7.0-10.0, the conductivity is 3000-10000μS / cm, the total hardness is 1000-3000mg / L, the COD is 20-200mg / L, and the mass fraction of salt ions is 5%. The concentrations of major ions in high brine are shown in Table 1.

[0018] Table 1

[0019] pH

8.6

NH 3 -N

0.382

Ca

4.83

K

22.5

Na

686

Mg

47.9

Cl -

1116

Sulfate

883

CO 3 2-

1.0

HCO 3 -

11.4

full salt

2752

[0020] Pass the above-mentioned industrial wastewater through the booster pump, and then pre-filter the raw water with an ultrafiltration membrane; the filtered wastewater first flows through a strong acid cation exchanger, which is composed of an ion exchange column and related pipeline valves. Fill the ion exchange resin, and regularly check the hardness to be regenerated with salt water; then pass through the inter...

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Abstract

The invention discloses a method for combined treatment of high-salt-content water. The method comprises the following steps: firstly enabling filtered high-salt-content water to pass through a cation exchanger for adsorbing cations, and an anion exchanger for adsorbing anions. The method disclosed by the invention has the advantages that multiple ions are converted into the ion type mainly containing sodium chloride, and ions with stress effect to microorganisms in biochemical reaction are removed, so that the adaptability of the biochemical reaction and the stability of the system are improved; and by blending of the high-salt-content water after ion exchange and domestic sewage, the quality of the blended water is close to the standard for the quality of water entering sewer of sewage city (CJ343-2010), and a proper water-quality condition is provided for biochemical reaction.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and resource comprehensive utilization, and in particular relates to a method for combined treatment of high salt water. Background technique [0002] High saline refers to the total salt content (such as Na + 、K + , Cl - , SO 4 2- etc.) at least 10,000mg / L of wastewater, especially high salt water in industrial parks with higher salt content, is one of the wastewater that is currently difficult to treat. Biochemical methods are widely used in sewage treatment because of their economy and high efficiency, but the inorganic salts in high-salt industrial wastewater have a strong stress effect on microorganisms (generally, when the salinity exceeds 10000mg / L, it will affect the growth of microorganisms. produce strong inhibition), will lead to the reduction of the activity of microbial metabolic enzymes, slow growth, low productivity coefficient, and seriously also lead to the c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 刘奕彤常青于欢刘军于长水于洋
Owner 鄂尔多斯市辰达环保科技有限责任公司
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