Treatment method of industrial wastewater with high concentration of chlorine ions

A technology for industrial wastewater and treatment methods, which is applied in multi-stage water treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. The effect of high processing efficiency, abundant pharmaceutical materials, huge economic and social benefits

Inactive Publication Date: 2017-08-18
北京晞柯源环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above methods have been tested and applied in the field. Due to technical problems, there are certain limitations in the application of removing high-concentration chloride ions in industrial wastewater, and the relative cost is relatively high, and the process is complicated. It is not easy to be popularized and applied in industrialization. , therefore, how to effectively solve the wastewater treated with high-concentration chloride ions is a technical problem that needs to be seriously solved

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  • Treatment method of industrial wastewater with high concentration of chlorine ions

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Embodiment 1

[0016] Embodiment 1: the present invention is implemented in practice, by figure 1 shown, including the following steps:

[0017] 1. First measure the chloride ion concentration in industrial wastewater, take 300ml of industrial wastewater and put it in a beaker, measure the chloride ion concentration with a chloride ion content detector, and the content is 3038.2mg / L;

[0018] 2. Calculate the dosage of the medicament, according to the chlorine ion (Cl － ) concentration to calculate the total content of chloride ions in wastewater, and then calculate the dosage of chemicals based on the total content of chloride ions. The molar ratio of chloride ions to dosage of chemicals is Cl － :NaAlO 2 :CaO=1: 3:9 weigh the medicine;

[0019] 3. Stirring reaction: add sodium metaaluminate and calcium oxide to the industrial wastewater according to the dosage calculated in step 2, stir and react at 28°C for 2.0h, and the stirring speed is 400r / min;

[0020] 4. Standing and filtering: A...

Embodiment 2

[0023] Embodiment 2: the present invention is implemented in practice, by figure 1 shown, including the following steps:

[0024] 1. First measure the chloride ion concentration in the industrial wastewater, take 300ml industrial wastewater and put it in a beaker, measure the chloride ion concentration with a chloride ion content meter, the content is 3812.4mg / L;

[0025] 2. Calculate the dosage of the medicament, according to the chlorine ion (Cl － ) concentration to calculate the total content of chloride ions in wastewater, and then calculate the dosage of chemicals based on the total content of chloride ions. The molar ratio of chloride ions to dosage of chemicals is Cl － :NaAlO 2 :CaO=1: 3:11 Weigh the medicine;

[0026] 3. Stirring reaction: add sodium metaaluminate and calcium oxide to the industrial wastewater according to the dosage calculated in step 2, stir and react at 25°C for 2.0h, and the stirring speed is 450r / min;

[0027] 4. Standing and filtering: After ...

Embodiment 3

[0030] Embodiment 3: the present invention is implemented in practice, by figure 1 shown, including the following steps:

[0031] 1. First measure the chloride ion concentration in industrial wastewater, take 300ml of industrial wastewater and put it in a beaker, measure the chloride ion concentration with a chloride ion content detector, and the content is 4203.8mg / L;

[0032] 2. Calculate the dosage of the medicament, according to the chlorine ion (Cl － ) concentration to calculate the total content of chloride ions in wastewater, and then calculate the dosage of chemicals based on the total content of chloride ions. The molar ratio of chloride ions to dosage of chemicals is Cl － :NaAlO 2 :CaO=1: 3:10.5 Weigh the medicine;

[0033] 3. Stirring reaction: add sodium metaaluminate and calcium oxide to the industrial wastewater according to the dosage calculated in step 2, stir and react at 25°C for 2.5 hours, and the stirring speed is 420r / min;

[0034] 4. Standing and filt...

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Abstract

The invention aims to provide a treatment method of industrial wastewater with high concentration of chlorine ions. The method comprises the following steps: step one, calculating consumption of chemicals; step two, calculating the total content of chlorine ions in the wastewater according to the concentration of the chlorine ions (Cl<->) in the wastewater measured in the step one, then calculating the consumption of chemicals according to the total content of the chlorine ions, wherein the chemicals are prepared from sodium metaaluminate (NaAlO2) and calcium oxide (CaO), and the mole ratio of the chlorine ions to the consumption of the chemicals is characterized in that the mole ratio of Cl<-> to NaAlO2 to CaO is 1 to (2.5-3) to (9-11); and weighing the chemicals; step three, carrying out stirring reaction; step four, standing and filtering; step five, carrying out secondary stirring reaction; and step six, calculating the removal rate of the chlorine ions. The method is simple and is abundant in chemical materials, high in treatment efficiency and excellent in effect, and is capable of effectively treating the industrial wastewater with high concentration of chlorine ions; the treated water is effectively replenished to an open-type circulation cooling system; the resources are saved; the method is environmentally friendly and energy-saving, and has great economic and social benefits.

Description

technical field [0001] The invention relates to environmental protection, in particular to a method for treating industrial wastewater containing high concentration of chloride ions. Background technique [0002] High-concentration chloride ion industrial wastewater refers to industrial wastewater with a chloride ion content of 3000-5000 mg / l. At present, the methods for removing chloride ions in industrial wastewater mainly include the following: (1) precipitation salt method; (2) evaporation and concentration (3) Electrosorption method; (4) Flocculation precipitation, solution extraction method; (5) Ion exchange method; (6) Electrodialysis method; (7) Electrolysis, oxidant method; There are certain limitations in the removal of concentrated chloride ions. [0003] The publication number is CN101121549, titled "Method for Treating Ammonium- and Chlorine-Containing Wastewater and Recycling Ammonium and Chlorine"; publication number is CN101723486A, titled "A Treatment Metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F101/12
CPCC02F1/001C02F9/00C02F2001/007C02F2101/12C02F2301/08
Inventor 蒲茂军毕崇
Owner 北京晞柯源环保科技有限公司
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