Treatment method for organic industrial wastewater

A technology for industrial wastewater and treatment methods, which is applied in biological water/sewage treatment, neutralized water/sewage treatment, reduced water/sewage treatment, etc., and can solve high equipment investment and operation costs, waste of water resources, and increased wastewater discharge Total volume and other issues to achieve the effect of low operating cost, environmental protection and cost saving

Inactive Publication Date: 2010-06-23
上海洁申实业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to overcome the defects of high equipment investment and operation cost in the existing wastewater treatment technology or the waste of water resources to increase the total amount of wastewater discharge. For the first time, ultrasonic waves are used to catalyze the aerobic granular sludge. In order to improve the efficiency of wastewater treatment, this method can not only meet the treatment requirements and protect the environment, but also the wastewater can be recycled after treatment, saving costs and water resources, with stable and reliable treatment effects, simple and easy operation, low operating costs, and easy industrialization Application and other outstanding features

Method used

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  • Treatment method for organic industrial wastewater
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Embodiment 1

[0040] The phenolic wastewater (COD 3688mg / L) from a chemical plant was used for testing. The wastewater is adjusted to pH 4.0 in the adjustment tank 1, and then enters the iron-carbon reaction tank 2, the amount of iron filings is 150g / L, and the activated carbon particles are added according to the iron-carbon ratio (W / W) of 1:1, and the reaction time is 90min. Then enter the Fenton reaction cell 3, H 2 o 2 The dosage is 40mmol / L, the reaction time is 120min, then the wastewater enters the neutralization sedimentation tank 4, the pH is adjusted to 9.0, and after standing for 6 hours, it enters the aerobic aerobic granular sludge tank 5, where it is aerated for 8 hours and then drained for 4 hours It is a cycle, the residence time is 12h, and the secondary sedimentation tank 6, the residence time is 3h, and the water is discharged. Ca 2+ The addition amount is 40mg / L, the ultrasonic frequency is 21kHz, the power is 20W, and the irradiation time is 10min to cultivate and do...

Embodiment 2

[0043] Anthraquinone dyeing and finishing wastewater (COD829mg / L) was taken from a factory for testing. Adjust the wastewater pH to 3.0 in the adjustment tank 1, and then enter the iron-carbon reaction tank 2, the amount of iron filings is 200g / L, and the activated carbon particles are added according to the iron-carbon ratio (W / W) of 3:1, and the reaction time is 150min. Then enter the Fenton reaction cell 3, H 2 o 2 The dosage is 60mmol / L, the reaction time is 90min, then the wastewater enters the neutralization sedimentation tank 4, the pH is adjusted to 9.0, and after standing for 6 hours, it enters the aerobic aerobic granular sludge tank 5, where it is aerated for 6 hours and then drained for 2 hours It is a cycle, the residence time is 8h, and the secondary sedimentation tank 6, the residence time is 3h, and the water is discharged. Ca 2+ The addition amount is 20mg / L, the ultrasonic frequency is 25kHz, the power is 30W, and the irradiation time is 15min to cultivate...

Embodiment 3

[0046] Take a factory yeast wastewater (COD 6078mg / L) for experiment. Adjust the wastewater pH to 2.0 in the adjustment tank 1, and then enter the iron-carbon reaction tank 2, the amount of iron filings is 50g / L, and the activated carbon particles are added according to the iron-carbon ratio (W / W) of 0.5:1, and the reaction time is 30min. Then the wastewater enters the Fenton reaction tank 3, H 2 o 2 The dosage is 50mmol / L, and the reaction time is 60min. Then the waste water enters the neutralization sedimentation tank 4, the pH is adjusted to 10.0, and enters the aerated aerobic granular sludge tank 5 after standing for sedimentation for 1 hour, with aeration for 5 hours, and standing for drainage for 3 hours as a cycle, the residence time is 8 hours, and passed through Secondary settling tank 6, the residence time is 3h, and the water is discharged. Ca 2+ The addition amount is 10mg / L, the ultrasonic frequency is 28kHz, the power is 20W, and the irradiation time is 2min...

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Abstract

The invention discloses a treatment method for organic industrial wastewater. The method comprises the following steps: the pH of wastewater is regulated in a regulation pond; the wastewater enters an iron and carbon reaction tank to be treated, carries out Fenton reaction treatment, and then enters a neutralization sedimentation tank to be precipitated; yielding water enters an aerobic granular sludge aeration tank to be treated and then stays for a period of time, and then water is flowed out. The method can reach the treatment requirements and protect the environment, and the wastewater can be reused after treatment. The method has the obvious characteristics of cost and water resource saving, stable and reliable treatment effect, simple and easy operation, lower running cost, easy industrial application, etc.

Description

technical field [0001] The invention relates to a treatment method for industrial waste water, in particular to a treatment method for organic industrial waste water. Background technique [0002] Environmental protection is the basic state policy of our country. The practice of world economic development has proved that in order to achieve sustainable and stable economic development, the contradiction between development and environmental protection must be resolved. In fact, the serious environmental problems produced by the rapid development of modern industry have directly or potentially threatened the survival and development of human beings. [0003] my country's wastewater discharge is increasing year by year, of which industrial wastewater accounts for a significant proportion. According to the 2006 National Environmental Statistical Bulletin of the Ministry of Environmental Protection, in 2006, the total discharge of wastewater in the country was 53.68 billion ton...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/66C02F1/70C02F1/52C02F3/12
CPCY02W10/10
Inventor 徐民黄玉光汤华军颜涌捷张素平朱振兴
Owner 上海洁申实业有限公司
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