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Mud-free Fenton coupling multi-module medical wastewater treatment method

A waste water treatment, multi-module technology, applied in the direction of special compound water treatment, water/sludge/sewage treatment, pathogenic microorganism waste water treatment, etc., can solve the problems that cannot meet the requirements of environmental protection, pertinence, stability, and treatment effect Medical wastewater and other problems, to achieve the effects of reducing antibiotic content and biological toxicity, good effluent quality, and low cost

Inactive Publication Date: 2020-10-16
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It cannot be processed simply through a set of biochemical systems
[0006] In summary, conventional wastewater treatment methods cannot meet the requirements of medical wastewater, especially the treatment and reuse of high-concentration medical wastewater in terms of pertinence, stability, and treatment effect, nor can they meet the country's increasingly stringent environmental protection requirements under the "Water Ten Measures" , the problem of medical water pollution has become a key restrictive factor for the development of the industry, and there is an urgent need to develop a stable, efficient and low-cost medical wastewater treatment method

Method used

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  • Mud-free Fenton coupling multi-module medical wastewater treatment method
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  • Mud-free Fenton coupling multi-module medical wastewater treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The method of the present invention is applied in a pharmaceutical manufacturer in Jiangsu to produce high-concentration sewage, and the specific influent water quality is shown in Table 1. The implementation process of sewage treatment is carried out according to the following steps.

[0030] Step 1. The high-concentration sewage generated by the production process first enters the adjustment tank 1, and after buffering and adjustment, the water quality is stabilized and then enters the air flotation tank, and micro-nano bubbles are used to remove large-particle pollutants in the sewage;

[0031] Step 2. The sewage treated in step 1 enters the mud-free Fenton catalytic oxidation tank NSFO, and uses the hydroxyl radicals generated under the catalytic action of hydrogen peroxide to decompose the organic pollutants in the sewage and improve the biodegradability of the sewage;

[0032] Step 3. The sewage flowing out of the mud-free Fenton catalytic oxidation tank NSFO ente...

Embodiment 2

[0040] A pesticide manufacturer in Jiangsu produces pesticide wastewater. The specific influent water quality is shown in Table 2. The reaction steps are the same as in Example 1, and the specific reaction parameters are as follows.

[0041] The specific reaction parameters in this example are: the air flotation technology described in step 1, the residence time is controlled to 25 minutes, and the room temperature is 4° C. during the reaction. In the mud-free Fenton method described in step 2, the waste water enters the mud-free Fenton catalytic oxidation tank after pretreatment, specifically, the circulation time in the reaction tank is 6 hours. The MBR module of the membrane bioreactor described in step 3 adopts the A20-MBR process, the hydraulic retention time is 6 hours, the mixed liquid in the MBR is returned to the anoxic tank, and the reflux ratio is 300%. For the UFM treatment of the ultrafiltration membrane module described in step 4, the operation time is 12 hours,...

Embodiment 3

[0045] An antibiotic manufacturer in Jiangsu produces high-concentration antibiotic and precursor wastewater. The specific influent water quality is shown in Table 3. The reaction steps are the same as in Example 1, and the specific reaction parameters are as follows.

[0046] The specific reaction parameters in this example are: the air flotation technology described in step 1, the residence time is controlled to 30 minutes, and the room temperature is 23° C. during the reaction. In the mud-free Fenton method described in step 2, the waste water enters the mud-free Fenton catalytic oxidation tank after pretreatment, specifically, the circulation time in the reaction tank is 6 hours. The MBR module of the membrane bioreactor described in step 3 adopts the A20-MBR process, the hydraulic retention time is 8 hours, the mixed liquid in the MBR is returned to the anoxic tank, and the reflux ratio is 400%. For the UFM treatment of the ultrafiltration membrane module described in st...

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Abstract

The invention relates to a mud-free Fenton coupling multi-module medical wastewater treatment method. Aiming at the treatment problem of high-concentration sewage in the medical wastewater industry and overcoming the defects of the traditional process technology, the invention provides a novel sludge-free Fenton catalytic oxidation treatment coupled compact biochemical treatment system and a novelmedical wastewater treatment method coupled by a plurality of novel efficient unit technologies. According to the invention, inherent characteristics of different sewage treatment technologies of each unit are fully combined; the problem that the antibiotics cannot be completely degraded by a biochemical treatment method is solved; the treatment capacity of an advanced oxidation technology is exerted, the treatment capacity of a biochemical system is stabilized and improved, the effluent quality is good, the treatment process is simple and stable, the treatment cost is low, the indexes of effluent COD, ammonia nitrogen total nitrogen and specific pollutants are remarkably superior to those of wastewater treatment levels of similar industries, and the method has good popularization and application prospects.

Description

technical field [0001] The invention relates to the field of treatment methods for medical wastewater, and particularly designs an efficient mud-free Fenton-coupled multi-module medical wastewater treatment method. Background technique [0002] Medical wastewater comes from hospitals and contains a large number of pathogenic bacteria, viruses and chemicals, which require special treatment. Due to a large number of anti-interference treatments, medical wastewater contains a large amount of antibiotics. The discovery and utilization of antibiotics was a major step forward for humanity, allowing us to tackle bacterial infections, which are considered the number one threat to human health. Until recent years, the problem of overuse of antibiotics has attracted scientific and public attention. The phenomenon of antibiotic resistance is becoming more apparent, and antibiotic residues are found in a variety of environmental matrices, including surface and groundwater, soil, waste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/30
CPCC02F9/00C02F2103/003C02F2101/30C02F2305/026C02F1/722C02F1/725C02F3/1263C02F3/301C02F1/441C02F1/04C02F2209/08C02F2209/03C02F2209/11C02F2209/10C02F1/24
Inventor 李志豪吴敏秦艳涛张仲琨凌立巍
Owner SOUTHEAST UNIV
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