A kind of phenol cyanide wastewater treatment method

A wastewater treatment and phenol cyanide technology, which is applied in multi-stage water treatment, water/sewage treatment, adsorption water/sewage treatment, etc., can solve the problems of unsuitability for large-scale industrialized treatment and high operating cost of phenol cyanide wastewater treatment process, and achieve a solution Severe backlog, reduced operating costs, and improved adsorption efficiency

Active Publication Date: 2021-09-28
湖南华菱涟源钢铁有限公司
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  • Summary
  • 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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  • A kind of phenol cyanide wastewater treatment method
  • A kind of phenol cyanide wastewater treatment method

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Experimental program
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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 cyanide wastewater treatment method of the present invention utilizes coke powder as a solid adsorbent to perform dynamic adsorption, comprising: a) mixing the phenol cyanide wastewater with the solid adsorbent to obtain the first solid-liquid mixture; the weight of the solid adsorbent is less than the amount of the phenol cyanide wastewater 10%; b) drain the first solid-liquid mixture to the adsorption pool, and perform dynamic adsorption in the adsorption pool to obtain the second solid-liquid mixture; at least a first partition and a second partition are vertically arranged in the adsorption pond for In the adsorption pool, at least the first adsorption tank, the second adsorption tank and the third adsorption tank are formed separately; the bottoms of the first partition and the second partition are arranged with a number of through holes for the first solid-liquid mixture to pass through, and the first solid-liquid The mixture flows through the first adsorption tank, the second adsorption tank and the third adsorption tank in sequence; c) The second solid-liquid mixture is subjected to solid-liquid separation, and the treated water is discharged. Therefore, the method of the invention has low operation cost, high adsorption efficiency, and can treat phenol-cyanide wastewater on a large scale.

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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Patent Type & Authority Patents(China)
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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