Treatment method for desorption liquid by process of deeply treating coking wastewater to adsorb resin

A technology for advanced treatment and resin adsorption, applied in the field of desorption liquid treatment and adsorption resin desorption liquid treatment, can solve the problems of dark color, poor biodegradability and high chemical oxygen demand, and achieve simple process, low cost, The effect of low processing cost

Inactive Publication Date: 2015-01-07
LIUZHOU IRON & STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a treatment method for coking wastewater advanced treatment adsorption resin desorption liquid, to solve the high chemical oxygen demand, deep color and biodegradability contained in coking wastewater advanced treatment adsorption resin desorption liquid very bad question

Method used

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Experimental program
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Effect test

Embodiment 1

[0017] A treatment method for coking wastewater advanced treatment adsorption resin desorption liquid, using such as figure 1 The regulating pool 1 and the reaction pool 2 shown are connected through the intermediate pump 3 between the regulating pool 1 and the reaction pool 2, and the reaction pool 2 is connected with an efflux pump 4, and the volumes of the regulating pool 1 and the reaction pool 2 are both 80 cubic meters , a plurality of bronchi 105 are respectively installed at the bottom of the regulating pool 1 and the reaction pool 2, and each bronchus 105 is provided with a plurality of air holes, and each bronchus 105 is connected with the gas supply device through the main air pipe 104; the regulating pool 1 and the reaction pool 2 are respectively equipped with a plurality of material conveying pipes, the regulating tank 1 is equipped with coking wastewater advanced treatment adsorption resin desorption liquid conveying pipe 101, sodium hydroxide conveying pipe 102 ...

Embodiment 2

[0023] The difference between this embodiment and embodiment 1 is:

[0024] Specific steps are as follows:

[0025] A. Transport the coking wastewater advanced treatment adsorption resin desorption liquid to the adjustment tank 1, check its pH value, and if the pH value is less than 7, add sodium hydroxide to the adjustment tank 1, start the gas supply device and input nitrogen gas into the adjustment tank 1 for stirring , to obtain an intermediate solution with a pH value of 7;

[0026] B, step A gained intermediate liquid is transported to reaction tank 2 by intermediate pump 3, in reaction tank 2, add ferrous sulfate solution and hydrogen peroxide and carry out aeration reaction, the concentration of ferrous sulfate solution is 250mg / L, and the concentration of hydrogen peroxide is 28%, the volume ratio of the intermediate solution, ferrous sulfate solution and hydrogen peroxide is 100:1:6, start the gas supply device to input nitrogen into the reaction tank 2 for stirring...

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Abstract

The invention discloses a treatment method for a desorption liquid by a process of deeply treating adsorption resin by coking wastewater and relates to the technical field of treating of the adsorption resin desorption liquid. The treatment method comprises the following steps: conveying adsorption resin desorption liquid deeply treated by the coking wastewater into a regulating tank to regulate a pH value of an intermediate liquid with to be 7-8, and then, conveying the intermediate liquid into a reaction tank, adding a ferrous sulfate liquid and hydrogen peroxide into the reaction tank to carry out aeration reaction; and after reacting for 6-8 hours, detecting that the chemical oxygen demand of the liquid in the reaction tank is smaller than 500mg/L and the chromaticity of the liquor in the reaction tank is smaller than 850PCU. Compared with the prior art, the ferrous sulfate liquid and the hydrogen peroxide are added to perform Fenton reaction to produce strong oxidizing substances, so that the non-biodegradable organic pollutants are oxidized into easily-biodegradable substances, the chemical oxygen demand and the chromaticity of the adsorption resin desorption liquid deeply treated by the coking wastewater are greatly lowered, the biodegradability is improved and the treatment cost is low.

Description

technical field [0001] The invention relates to the technical field of treatment of adsorption resin desorption liquid, in particular to a treatment method for the desorption liquid produced by the adsorption resin method for advanced treatment of coking wastewater. Background technique [0002] Coking wastewater is industrial wastewater produced during coking and coal gas high-temperature dry distillation, purification and recovery of by-products. It is a typical high-concentration toxic and harmful organic wastewater. In recent years, with the promotion of coking wastewater advanced treatment technology, membrane separation technology, reverse osmosis technology and resin adsorption technology have been applied. Resin adsorption method has the characteristics of large adsorption capacity, strong mechanical properties and reusability, and is widely used in coking wastewater. The advanced treatment of coking wastewater after desorption by adsorption resin contains a large am...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/72
CPCC02F9/00C02F1/722
Inventor 杨中贵罗玲彭光文秦振清冯群谢文鹏卢春强梁永增王锦明李海明韦晓玲
Owner LIUZHOU IRON & STEEL
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