Activated carbon in-situ cyclic adsorption regeneration process for advanced treatment of sewage plant

A technology of activated carbon adsorption and advanced treatment, applied in water/sewage treatment, adsorbed water/sewage treatment, water/sludge/sewage treatment, etc., to achieve the effect of small mass loss, complete recovery of adsorption value and cost saving

Inactive Publication Date: 2020-04-14
SHANDONG ENVIRONMENTAL PROTECTION IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The patent of this invention aims at the advanced treatment of sewage plants, and solves the problems described in the background technology through fresh carbon adsorption→in-situ regeneration of saturated carbon→secondary adsorption of regen

Method used

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  • Activated carbon in-situ cyclic adsorption regeneration process for advanced treatment of sewage plant
  • Activated carbon in-situ cyclic adsorption regeneration process for advanced treatment of sewage plant
  • Activated carbon in-situ cyclic adsorption regeneration process for advanced treatment of sewage plant

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Embodiment 1

[0026] An activated carbon in-situ cyclic adsorption regeneration process for advanced treatment of sewage treatment plants, comprising the following steps:

[0027] S1: The sewage in the sewage plant is injected into the activated carbon adsorption device as raw water, the hydraulic retention time is 1h, the CODcr index of the raw water influent is 120mg / L, and the CODcr index of the raw water effluent is 40mg / L;

[0028] S2: When the CODcr index value of the raw water effluent exceeds 40mg / L for three consecutive days, replace the activated carbon filler in the activated carbon adsorption device;

[0029] S3: put the activated carbon filler replaced in S2 into the activated carbon regeneration furnace to carry out high-temperature impurity desorption for 30 minutes, wherein the activated carbon regeneration furnace temperature is 750 ° C, and is in an oxygen-free state;

[0030] S4: The activated carbon filler treated in S3 is added to the activated carbon adsorption device ...

Embodiment 2

[0037] An activated carbon in-situ cyclic adsorption regeneration process for advanced treatment of sewage treatment plants, comprising the following steps:

[0038] S1: The sewage in the sewage plant is injected into the activated carbon adsorption device as raw water, the hydraulic retention time is 1h, the CODcr index of the raw water influent is 90mg / L, and the CODcr index of the raw water effluent is 20mg / L;

[0039] S2: When the CODcr index value of the raw water effluent exceeds 40mg / L for three consecutive days, replace the activated carbon filler in the activated carbon adsorption device;

[0040] S3: put the activated carbon filler replaced in S2 into the activated carbon regeneration furnace to carry out high-temperature impurity desorption for 30 minutes, wherein the activated carbon regeneration furnace temperature is 850 ° C, and is in an oxygen-free state;

[0041] S4: The activated carbon filler treated in S3 is added to the activated carbon adsorption device i...

Embodiment 3

[0049] An activated carbon in-situ cyclic adsorption regeneration process for advanced treatment of sewage treatment plants, comprising the following steps:

[0050] S1: The sewage in the sewage plant is injected into the activated carbon adsorption device as raw water, the hydraulic retention time is 1h, the CODcr index of the raw water influent is 60mg / L, and the CODcr index of the raw water effluent is 20mg / L;

[0051] S2: When the CODcr index value of the raw water effluent exceeds 40mg / L for three consecutive days, replace the activated carbon filler in the activated carbon adsorption device;

[0052] S3: put the activated carbon filler replaced in S2 into the activated carbon regeneration furnace to carry out high-temperature impurity desorption for 30 minutes, wherein the activated carbon regeneration furnace temperature is 850 ° C, and is in an oxygen-free state;

[0053] S4: The activated carbon filler treated in S3 is added to the activated carbon adsorption device i...

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Abstract

The invention discloses an activated carbon in-situ cyclic adsorption regeneration process for advanced treatment of a sewage plant, the process is characterized in that internal circulation of activated carbon in the sewage plant is realized, and the problem that saturated activated carbon cannot be treated is solved. The process is good in treatment effect, under the condition that CODcr is smaller than or equal to 90 mg/L, effluent CODcr can reach the standard of surface V-type water and even IV-type water, the iodine value and methylene blue adsorption value of the regenerated activated carbon are slightly higher than those of fresh carbon, the mass loss is smaller than or equal to 8%, and the adsorption effect of the regenerated activated carbon is the same as that of the fresh carbon.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, in particular to an activated carbon in-situ circulating adsorption regeneration process for advanced treatment of sewage plants. Background technique [0002] Advanced oxidation technology is currently used on a large scale in the advanced treatment technology of sewage plants, mainly because this technology utilizes the strong oxidizing properties of hydroxyl radicals to oxidatively degrade the refractory organic substances in sewage. However, in actual operation, advanced oxidation technology faces the following several problems question. [0003] 1. Ozone-based advanced oxidation technology, the production cost of ozone is high, the oxygen source ozone generator has only 10% oxygen utilization rate, and the power consumption is 7-9 degrees / kgO3; H2O2-based advanced oxidation technology, oxidation efficiency Low, some technologies will also produce a large amount of iron sludge. ...

Claims

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Application Information

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IPC IPC(8): C02F1/28B01J20/34B01J20/20C02F101/36C02F101/38
CPCB01J20/20B01J20/3416B01J20/3483C02F1/283C02F2101/36C02F2101/38C02F2101/40C02F2209/08C02F2303/16
Inventor 孙国鹏王志芳王顺刚
Owner SHANDONG ENVIRONMENTAL PROTECTION IND CO LTD
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