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Phosphorus trichloride production wastewater purification treatment method

A technology for producing wastewater and phosphorus trichloride, which is applied in the directions of oxidized water/sewage treatment, natural water treatment, water/sewage treatment, etc. The process is simple and the effect of reducing the difficulty of processing

Inactive Publication Date: 2017-03-22
安道麦股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The total phosphorus pollutant content in the clear liquid is as high as 2000-2400mg / l, which increases the difficulty of wastewater treatment for sewage treatment plants

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Put 350g of waste water in a three-necked bottle, turn on the stirring device, and add 15g of calcium hypochlorite dropwise at room temperature to react. The reaction time is 60min. After the reaction is completed, the mixture is allowed to stand for 15min. 330g of liquid, and finally the resulting clear liquid is sent to the sewage treatment plant for treatment and discharged after passing the treatment, and the obtained sediment is sent to the incinerator for incineration.

[0017] After testing, the total phosphorus content in the clear liquid decreased from 2370mg / l to 0.46mg / l, and the total phosphorus removal rate was 99.98%.

Embodiment 2

[0019] Put 250g of waste water in a three-necked bottle, turn on the stirring device, add 18g of sodium hypochlorite at room temperature to react, the reaction time is 60min, then add 4.2g of quicklime, stir for 5min, after the reaction is completed, let the mixture stand for 15min, and after the mixture is layered, Filter to obtain 247g of the clear liquid, and finally send the gained clear liquid to a sewage treatment plant for treatment and discharge after passing the treatment, and the gained sediment is sent to an incinerator for incineration.

[0020] After testing, the total phosphorus content in the clear liquid decreased from 2100mg / l to 0.38mg / l, and the total phosphorus removal rate was 99.98%.

Embodiment 3

[0022] Put 300g of waste water in a three-necked bottle, turn on the stirring device, and react with 10g of chlorine gas at room temperature. The reaction time is 60 minutes, add 4.0g of quicklime, and stir for 5 minutes. After the reaction is completed, let the mixture stand for 15 minutes. Afterwards, filter to obtain 278g of clear liquid, and finally the gained clear liquid is sent to the sewage treatment plant for treatment and discharged, and the gained sediment is sent to the incinerator for incineration.

[0023] After testing, the total phosphorus content in the clear liquid decreased from 2284mg / l to 0.47mg / l, and the total phosphorus removal rate was 99.98%.

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PUM

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Abstract

The invention discloses a phosphorus trichloride production wastewater purification treatment method, characterized by adding an oxidizing agent into phosphorus trichloride production wastewater to obtain a mixture, stirring the obtained mixture, then reacting at room temperature, standing for layering after the reaction to obtain a mixture, filtering the mixture to obtain clear liquid, sending the clear liquid into a sewage treatment plant and discharging after treating and reaching standards, and feeding obtained dregs into an incinerator for incineration. The method provided by the invention has the following advantages: 1, the method can be used to effectively remove total phosphorus pollutants in the wastewater, the quality of the wastewater after treatment is clean and transparent, the COD is less than 50mg / l, the total phosphorus is equal to or less than 0.5mg / l, national emission standards are met, the treatment difficulty of the sewage treatment plant is reduced, the loss of useful materials is reduced, the equipment utilization rate is improved, and the environment is improved; 2, the technological process of the method is simple and convenient, the operation is simple, the cost is low, and the pollutant removal rate is improved, so the method provided by the invention has good popularization value.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment in chemical production, in particular to a method for purifying phosphorus trichloride production wastewater. [0002] technical background [0003] Phosphorus trichloride is a colorless and clear liquid that can fume, dissolve in water and ethanol, decompose and release heat at the same time. Hydrochloric acid mist can be formed in the air. Stimulates and corrodes the skin and mucous membranes. Short-term inhalation of a large amount of steam can cause upper respiratory tract irritation, pharyngitis, bronchitis, and severe laryngeal edema leading to suffocation, pneumonia or pulmonary edema. Skin and eye contact may cause irritation or burns. Severe eye burns can cause blindness. Chronic effects: Long-term exposure to low concentrations can cause eye and respiratory irritation. Can cause phosphorus toxicity oral disease. Phosphorus trichloride is a raw material for the productio...

Claims

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Application Information

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IPC IPC(8): C02F1/72C02F1/76C02F103/34
CPCC02F1/76C02F1/722C02F2103/34
Inventor 刘安平殷宏薛光才周用义沈佩廖艳
Owner 安道麦股份有限公司
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