Phenol-cyanogen wastewater treatment method

A technology for wastewater treatment and phenol cyanide, which is applied in multi-stage water treatment, water/sewage treatment, adsorbed water/sewage treatment, etc. It can solve the problems of unsuitable large-scale industrial treatment and high operating cost of phenol cyanide wastewater treatment process. The effect of serious backlog, reducing operating costs and improving adsorption efficiency

Active Publication Date: 2019-01-11
湖南华菱涟源钢铁有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The main purpose of the present invention is to provide a method for treating phenol-cyanide wastewater, which aims to solve the technical problems that the existing phenol-cyanide wastewater treatment process has high operating costs and is not suitable for large-scale industrial treatment.

Method used

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Embodiment 1

[0069] The present embodiment provides a kind of phenol cyanide wastewater treatment method, comprises the following steps:

[0070] 1. Adjust the pH of phenol cyanide wastewater to 5-7, take coke powder as a solid adsorbent, and then use 60m of phenol cyanide wastewater in a flowing state 3 The flow rate of / h flows into the ejector, and is mixed with the solid adsorbent at a flow rate of 30m / s in the ejector to obtain the first solid-liquid mixture.

[0071] Wherein, the addition of solid adsorbent accounts for 5% of the total weight of phenol cyanide wastewater.

[0072] The solid adsorbent has an average particle size of 1 mm and a porosity of 0.4.

[0073] 2. Adjust the flow rate of the first solid-liquid mixture to 0.8m / s, and flow into the adsorption pool naturally through the horizontal pipeline, and perform dynamic adsorption in the adsorption pool to obtain the second solid-liquid mixture;

[0074] A first partition and a second partition are longitudinally arrange...

Embodiment 2

[0084] The present embodiment provides a kind of phenol cyanide wastewater treatment method, comprises the following steps:

[0085] 1. Adjust the pH of phenol cyanide wastewater to 5-7, take coke powder as a solid adsorbent, and then use 60m of phenol cyanide wastewater in a flowing state 3 The flow rate of / h flows into the ejector, and is mixed with the solid adsorbent at a flow rate of 30m / s in the ejector to obtain the first solid-liquid mixture.

[0086] Wherein, the addition of solid adsorbent accounts for 3% of the total weight of phenol cyanide wastewater.

[0087] The average particle size of the solid adsorbent is 0.48mm.

[0088] 2. Adjust the flow rate of the first solid-liquid mixture to 0.9m / s, and flow into the adsorption pool naturally through the horizontal pipeline, and perform dynamic adsorption in the adsorption pool to obtain the second solid-liquid mixture;

[0089] A first partition and a second partition are vertically arranged in the adsorption pool...

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Abstract

The invention belongs to the technical field of wastewater treatment. The phenol-cyanogen wastewater treatment method utilizes coke powder as a solid adsorbent to perform dynamic adsorption, and comprises: a) mixing phenol-cyanogen wastewater and a solid adsorbent to obtain a first solid-liquid mixture, wherein the weight of the solid adsorbent is less than 10% of the amount of the phenol-cyanogenwastewater; b) draining the first solid-liquid mixture to an adsorption pool, and carrying out dynamic adsorption in the adsorption pool to obtain a second solid-liquid mixture, wherein at least a first separation plate and a second separation plate are longitudinally arranged in the adsorption pool, and are used for separating in the adsorption pool to at least form a first adsorption groove, asecond adsorption groove and a third adsorption groove, a plurality of through holes for the passing through of the first solid-liquid mixture are arranged on the bottom portions of the first separation plate and the second separation plate, and the first solid-liquid mixture sequentially flows through the first adsorption groove, the second adsorption groove and the third adsorption groove; and c) carrying out solid-liquid separation on the second solid-liquid mixture, and discharging the treated water. According to the present invention, the method has characteristics of low operating cost and high adsorption efficiency, and can treat large-scale phenol-cyanogen wastewater.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a method for treating phenol-cyanide wastewater. Background technique [0002] Phenol cyanide wastewater is a type of organic wastewater produced in the process of coal coking, gas purification, and coking by-products processing and refining. It contains high concentrations of phenol and cyanide, and the pollutant composition is complex, highly toxic, and difficult to degrade. At present, iron and steel enterprises generally adopt ammonia distillation + biochemical treatment + coagulation and sedimentation treatment process, but the chroma and COD of the effluent are often high, and it is difficult to meet the discharge requirements of the "Coking Chemical Industry Pollutant Discharge Standard" (GB16171-2012), so it is necessary to Advanced treatment of phenol cyanide wastewater. [0003] 201510625617.7 discloses a method for advanced treatment of phenol...

Claims

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Application Information

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IPC IPC(8): C02F1/28C02F101/18C02F101/34
CPCC02F1/283C02F2101/18C02F2101/345C02F2301/08
Inventor 史岳荣颜超罗成泉谭超刘善清
Owner 湖南华菱涟源钢铁有限公司
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