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Device and method for treating phenol-containing coal chemical industry wastewater by advanced oxidation method in cooperation with immobilized white-rot fungi

A technology for coal chemical wastewater and white rot fungi, which is applied in biological treatment devices, chemical instruments and methods, oxidized water/sewage treatment, etc. Degradation effect

Pending Publication Date: 2020-03-20
INNER MONGOLIA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Technical problem to be solved: the present invention is aimed at the conventional activated sludge filter method, because the inhibitory effect of high-concentration phenols on the filter tank microorganisms leads to the technical problem that it has a poor treatment effect on high-concentration phenol-containing coal chemical industry wastewater, and the purpose is to provide a kind of O 3 / H 2 o 2 A device and method for treating phenol-containing coal chemical wastewater by advanced oxidation method and immobilized white-rot fungi.

Method used

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  • Device and method for treating phenol-containing coal chemical industry wastewater by advanced oxidation method in cooperation with immobilized white-rot fungi
  • Device and method for treating phenol-containing coal chemical industry wastewater by advanced oxidation method in cooperation with immobilized white-rot fungi
  • Device and method for treating phenol-containing coal chemical industry wastewater by advanced oxidation method in cooperation with immobilized white-rot fungi

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Experimental program
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Effect test

Embodiment 1

[0038] This embodiment adopts batch processing mode to test device and method provided by the invention

[0039] Take domestic sewage to simulate phenol-containing wastewater for experiment, take 20L of domestic sewage from the sewage plant, add phenol to make the phenol concentration in the raw water 500 mg / L (the determination method of phenol content is 4-aminoantipyrine method), and then use the device O 3 / H 2 o 2 Carry out oxidation treatment, water pump flow rate 1 L / min, adjust O 3 Generator 10 makes O 3 The total dosage is 50mg / L, adjust the peristaltic metering pump 5 to make H 2 o 2 The dosage is 50 mg / L, the oxidation treatment is 20 minutes, and then 10 L of the oxidized wastewater is added to the white rot fungus biofilm reactor 15, and the batch treatment is adopted. The hydraulic retention time of the biofilm is 24 hours, and the aeration adopts intermittent aeration Aerate once every 3 hours, 5 minutes each time. After treatment, the concentration of phe...

Embodiment 2

[0042] This embodiment adopts continuous processing mode to test device and method provided by the invention

[0043] The waste water after recovery of phenol and ammonia in coal-to-gas enterprises (see Table 1 for the quality of waste water before and after treatment), first oxidizes the waste water for 30 min through the oxidation treatment unit in the system, and adjusts the O 3 Generator 10 and peristaltic metering pump 5 make total dosing of oxidant O 3 and H 2 o 2 The dosage is 100 mg / L and 50 mg / L, the flow rate of the water pump is 3 L / min, and the contact reaction time is 30 min. After oxidation treatment, the wastewater enters the white rot fungus biofilm reactor 15 through the peristaltic metering pump 5, and the flow rate of the metering pump is 4 mL / min. min, while the white-rot fungus biofilm reactor 15 is continuously aerated, the air flow rate is 150mL / min, the hydraulic retention time of the white-rot fungus biofilm reactor 15 is 48 h, and the waste water af...

Embodiment 3

[0047] This embodiment adopts batch processing mode to test device and method provided by the invention

[0048] Take phenol-containing coal chemical wastewater sample 2 (see Table 2 for the water quality conditions of water sample 2), and use the system oxidation unit to oxidize and degrade the wastewater to adjust O 3 Generator 10 and peristaltic metering pump 5 make the oxidant O 3 and H 2 o 2 The dosage is 120 mg / L and 40 mg / L respectively, the flow rate of the water pump is 5 L / min, and the contact oxidation time is 40 min. After the oxidation treatment, the coal chemical industry wastewater is stored in the gas-liquid separation tank, and then the white rot fungus biofilm reactor 15 The wastewater after oxidation treatment is biodegraded. The influent flow rate of the white rot fungus biofilm reactor 15 is 10 mL / min, the aeration interval is 3 h, each aeration is 5 min, the air flow rate is 300 mL / min, and the hydraulic retention of the biofilm The time was 36 hours, ...

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Abstract

The invention provides a device and a method for treating phenol-containing coal chemical industry wastewater by advanced oxidation method in cooperation with immobilized white-rot fungi. The method comprises the following steps: carrying out pre-oxidizing on phenol-containing coal chemical industry wastewater with residual O3 in a water storage tank, and then conveying the treated wastewater intoa venturi gas-liquid mixer through a sewage pipe and a wastewater inlet pump; reacting O2 into O3, and then conveying the obtained O3 into the venturi gas-liquid mixer, conveying H2O2 into the venturi gas-liquid mixer through a peristaltic metering pump and an H2O2 injection pipeline to react with oxidizing agent O3, and carrying out oxidative degradation on refractory toxic substances such as phenols in the coal chemical industry wastewater with free radicals generated in the gas-liquid mixing process; carrying out gas-liquid separation in a gas-liquid separation tank, conveying an obtainedproduct into a white-rot fungus bio-membrane reactor, conveying unreacted O3 back to an untreated wastewater storage tank through a residual O3 aeration pipe loop for pre-oxidizing on the wastewater;conveying wastewater treated in the white-rot fungi bio-membrane reactor into a sedimentation tank for standing separation, so that the treated water reaches the discharge standard of coal chemical industry wastewater and can be safely discharged or recycled.

Description

technical field [0001] The invention relates to the technical field of industrial wastewater treatment application, in particular to a device and method for treating phenol-containing coal chemical wastewater by advanced oxidation method and immobilized white-rot fungi. Background technique [0002] Phenol-containing coal chemical wastewater is a kind of wastewater produced in the process of coal gasification, coal to oil and coking, which is characterized by COD Cr High, complex composition, high toxicity, difficult to biodegrade. Among them, the high content and variety of phenols are the main reasons for their refractory degradation. In addition, it also contains polycyclic aromatic hydrocarbons, biphenyls, fatty acids, tar and other toxic organic pollutants. These toxic and harmful substances have a strong inhibitory effect on the microbial activity of the biofilter, resulting in the inability to effectively remove them by conventional sewage treatment processes. Disch...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/34C02F103/34
CPCC02F1/52C02F1/722C02F1/78C02F3/105C02F3/34C02F9/00C02F2101/345C02F2103/34C02F2201/782C02F2203/006C02F2209/08C02F2301/08C02F2305/023
Inventor 成建国吴楠楠欧阳顺利马力通段建国
Owner INNER MONGOLIA UNIV OF SCI & TECH
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