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Method for wastewater treatment by comprehensive utilization of ozone and non-reducing gas

A gas mixing and sewage technology, which is applied in the fields of oxidized water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc. It can solve the problems of suffocating and killing aquatic organisms and microorganisms for a long time, and the effect is not obvious.

Inactive Publication Date: 2009-08-05
李三山
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it takes a long time to suffocate and kill aquatic organisms and microorganisms with this method, and the effect on anaerobic microorganisms and eggs or spores of certain aquatic organisms in the dormant period is not obvious
[0057] Through the above technical background introduction and analysis, it can be found that there is currently no single "three water" treatment technology for ships that can fully meet the following four requirements at the same time: ① It can eliminate oil, organic Chemical pollutants, ② can completely kill aquatic organisms and pathogens in the water, ③ can start operation at any time (not docking) ④ rely on high-intensity processing capacity, and can handle a very large number of ships in a short time "San Shui" and make it reach the standard

Method used

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  • Method for wastewater treatment by comprehensive utilization of ozone and non-reducing gas
  • Method for wastewater treatment by comprehensive utilization of ozone and non-reducing gas

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Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0085] In the following embodiments 1~3:

[0086] The test samples were self-prepared: the water samples were taken from the starting point of the trestle bridge of the Beilun Port Oil Wharf in Ningbo, Zhejiang (the sampling depth is between 1.5 and 2 meters), and 0 # Diesel oil 40g, and strong stirring will increase the oil content of 200mg / L;

[0087] The water quality monitor adopts the BA-200 oil-in-water analyzer produced by the American ISI company;

[0088] Biological detection adopts TEMPO produced by French Mérieux company Microbial quantitative detector, measuring the number of colonies (cfu, colony forming units) per unit volume of water after cultivation;

[0089] The booster pump adopts QJB10A high-pressure metering pump produced by Zhejiang Qianjiang Pump Industry Co., Ltd.

[0090] Except for water sample testing and biological testing, the whole test was completed within 2 hours.

Embodiment 1

[0092] The other non-reducing gas used is oxygen, the dosage is 1L / L water, the dosage of ozone is 100mg / L water, and the ratio of the water inlet in the branch water inlet pipe to the water inlet in the main water inlet pipe is 1:10.

[0093] The test results are shown in Table 1.

Embodiment 2

[0095] The gas used is compressed air, the dosage is 0.2L / L water, the dosage of ozone is 150mg / L water, and the ratio of the water inlet in the branch water inlet pipe to the water inlet in the main water inlet pipe is 1:50.

[0096] The test results are shown in Table 1.

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Abstract

The invention relates to the technical field of sewage treatment and aims to provide a method for comprehensively using ozone and other non-reducing gases to mix and treat sewage. The sewage to be treated enters the mixing reactor from the main water inlet pipe, and then it is fully filled and runs continuously. The booster pump is used to provide high-speed jet water for the ejector installed on the branch water inlet pipe, and the ejector flows from the gas suction port. Ozone and other non-reducing gases are sucked into the mixing reactor through the branch water inlet pipeline; the other non-reducing gases are at least one of oxygen, air or argon except ozone. Using this method to treat the "three waters" of ships containing oil and various organic chemical pollutants as well as aquatic organisms and pathogens can not only eliminate oil and organic chemical pollutants in the "three waters" of ships, but also kill water The aquatic organisms and pathogens can be started and operated at any time, and relying on high-intensity processing capacity, it can handle a very large number of ships in a short period of time.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a method for comprehensively using ozone and other non-reducing gases to treat sewage. Background technique [0002] Among all kinds of sewage, sewage containing oil, organic pollutants, aquatic organisms and pathogens occupies a large proportion. Among them, the "three waters" of ships are very representative. [0003] The "three waters" of a ship (the general term for ballast water, tank washing water and engine bilge water) are materials that must be used or generated in the daily shipping business of a ship. Due to actual technical conditions and water sources, the "three waters" must contain oil or organic chemical pollutants, as well as aquatic organisms and pathogens that have moved from other places. Since the "three waters" inevitably need to be discharged or replaced, it will bring oil and organic chemical pollution to the discharged waters and land, as well ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/78C02F1/74C02F101/32
Inventor 李三山
Owner 李三山