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Flocculating agent for treating coking wastewater, and preparation method and application thereof

A technology for coking wastewater and flocculants, which is applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc., can solve threats to human health, increase in aluminum content, and effluent chromaticity that does not meet discharge requirements and other problems, to achieve the effect of large flocs, high activity and non-corrosiveness

Inactive Publication Date: 2017-02-01
刘可
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the aluminum-based flocculant treats the sewage, the aluminum content in the effluent increases, and the aluminum enters the drinking water through the water cycle, causing various diseases and threatening human health; the iron-based flocculant has a high removal efficiency for COD, but because the iron ion itself has The color and chroma of the effluent often fail to meet the discharge requirements

Method used

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  • Flocculating agent for treating coking wastewater, and preparation method and application thereof
  • Flocculating agent for treating coking wastewater, and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0017] In the embodiment of the present invention, a flocculant for treating coking wastewater is composed of the following raw materials in parts by weight: 30 parts of erionite, 8 parts of rosin glyceride, 1 part of aluminum stearate, and 5 parts of acrylic acid emulsion.

[0018] Aluminum stearate is mixed with an aqueous solution of sodium hydroxide whose quality is 8 times that of the aluminum stearate solution, and the mass content of sodium hydroxide in the aqueous solution of sodium hydroxide is 5%; 150-mesh sieve, add aluminum stearate solution, seal and soak at 62°C for 2h, then raise the temperature to 95°C and heat and stir at this temperature for 40min to prepare the pretreatment material. Mix the acrylic emulsion with the pretreatment material, seal and stir for 50 minutes under an ozone atmosphere at a temperature of 68°C, then perform ultrasonic treatment for 45 minutes with an ultrasonic power of 800W, then put it into a reaction kettle and raise the temperatur...

Embodiment 2

[0020] In the embodiment of the present invention, a flocculant for treating coking wastewater is composed of the following raw materials in parts by weight: 38 parts of erionite, 16 parts of rosin glyceride, 8 parts of aluminum stearate, and 13 parts of acrylic acid emulsion.

[0021] Aluminum stearate is mixed with an aqueous solution of sodium hydroxide whose quality is 8 times that of the aluminum stearate solution, and the mass content of sodium hydroxide in the aqueous solution of sodium hydroxide is 5%; 150-mesh sieve, add aluminum stearate solution, seal and soak at 62°C for 2h, then raise the temperature to 95°C and heat and stir at this temperature for 40min to prepare the pretreatment material. Mix the acrylic emulsion with the pretreatment material, seal and stir for 60 minutes at 68°C under an ozone atmosphere, then perform ultrasonic treatment for 45 minutes with an ultrasonic power of 800W, then put it into a reaction kettle and raise the temperature to 350°C und...

Embodiment 3

[0023] In the embodiment of the present invention, a flocculant for treating coking wastewater is composed of the following raw materials in parts by weight: 32 parts of erionite, 10 parts of rosin glyceride, 3 parts of aluminum stearate, and 7 parts of acrylic acid emulsion.

[0024] Aluminum stearate is mixed with an aqueous solution of sodium hydroxide whose quality is 8 times that of the aluminum stearate solution, and the mass content of sodium hydroxide in the aqueous solution of sodium hydroxide is 5%; 150-mesh sieve, add aluminum stearate solution, seal and soak at 62°C for 2h, then raise the temperature to 95°C and heat and stir at this temperature for 40min to prepare the pretreatment material. Mix the acrylic emulsion with the pretreatment material, seal and stir for 55 minutes at 68°C under an ozone atmosphere, and then perform ultrasonic treatment for 45 minutes with an ultrasonic power of 800W, then put it into a reaction kettle and raise the temperature to 350°C ...

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Abstract

The invention discloses a flocculating agent for treating coking wastewater, and a preparation method and application thereof. The flocculating agent is prepared from the following raw materials in parts by weight: 30 to 38 parts of erionite, 8 to 16 parts of rosin glycerin ester, 1 to 8 parts of aluminum stearate and 5 to 13 parts of acrylic emulsion. The erionite and the rosin glycerin ester are mixed and pulverized; a prepared aluminum stearate solution is added for sealed soaking; hot stirring is performed to obtain pretreatment materials; the acrylic emulsion is added; in the ozone atmosphere, heating and sealed stirring, ultrasonic treatment and high-temperature calcination are performed to obtain the flocculating agent. The flocculating agent is used for treating the coking wastewater; the coking wastewater color intensity and the COD (chemical oxygen demand) removal effect are more excellent; flocs generated by the flocculating agent are great, and can be easily settled. The flocculating agent has the advantages that the material taking is simple; the preparation process is simple; the operation is easy; the property of the flocculating agent is stable; the activity is high; the adsorption capacity is high; the buffer capability is high; no corrosiveness exists; safety, non-toxicity and harmlessness are realized; the secondary pollution cannot be caused on the water quality; the flocculating agent is applicable to industrial production.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a flocculant for treating coking wastewater, a preparation method and application thereof. Background technique [0002] Coking wastewater is a typical toxic and refractory organic wastewater. The coking wastewater mainly comes from the production water and steam condensation wastewater in the primary cooling of coke oven gas and coking production. Features: The concentration of pollutants in coking wastewater is high and difficult to degrade. Due to the presence of nitrogen in coking wastewater, the nitrogen source required for biological purification is excessive, which brings great difficulties to the treatment standard; the amount of wastewater discharge is large, and the water consumption per ton of coke More than 2.5t; waste water is very harmful, polycyclic aromatic hydrocarbons in coking waste water are not only difficult to degrade, but also usually strong ...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/54
CPCC02F1/5236C02F1/5245C02F1/54
Inventor 不公告发明人
Owner 刘可
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