Method for deep oxidation treatment of industrial wastewater by ozone

A technology for deep oxidation of industrial wastewater, applied in oxidized water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve problems such as insufficient mixing effect, avoid secondary pollution, and have large treatment capacity , cost-saving effect
CN109835976AInactive Publication Date: 2019-06-04HENAN CHEM IND RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HENAN CHEM IND RES INST
Publication Date
2019-06-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method for deep oxidation treatment of industrial wastewater by ozone is disclosed, the industrial wastewater from a wastewater tank is subjected to flow rate regulation by a liquid flowmeter and then enters a second-order micro-mixing reactor through a water inlet of the second-order micro-mixing reactor; a catalyst is continuously added into the second-order micro-mixing reactor from a catalyst adding port, and a reflux flow meter is adjusted to achieve full reflux; an ozone generator is started, ozone formed by an ozone generator from oxygen in an oxygen gas storage tank enters the gas inlet of the second-order micro-mixing reactor through a buffer tank and a gas flowmeter, and the ozone in the second-order micro-mixing reactor is fully contacted and reacted with the industrial wastewater; every 10 minutes, the ozone content of a tail gas outlet and the COD value of the water in a wastewater outlet are respectively taken, when the water quality requirement is met, the reflux flowmeter is closed, and the treated wastewater meeting the requirements is collected; the treated wastewater flows out of the water outlet of the second-order micro-mixing reactor, and part of the wastewater and the original wastewater flow back into the second-order micro-mixing reactor, and part of the wastewater is discharged up to the standard; the tail gas after fully reacting is discharged fromthe gas outlet of the second-order micro-mixing reactor to the standard.
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Description

technical field

[0001] The invention relates to a method for treating industrial wastewater by ozone deep oxidation, belongs to the field of chemical environmental protection, and in particular relates to a method for treating industrial wastewater. Background technique

[0002] Chemical wastewater has a large amount of water and complex water quality, and contains a large amount of toxic and harmful substances such as phenols, nitrogen / oxygen / sulfur-containing heterocyclic / aromatic ring organic compounds, polycyclic aromatic hydrocarbons, and cyanide. After chemical wastewater has undergone traditional physical and chemical pretreatment and biochemical treatment, it is often difficult to meet the corresponding wastewater discharge standards, and it is still a typical toxic and harmful biological refractory industrial wastewater, which has become a restrictive problem for the development of the chemical industry. Therefore, advanced treatment of chemical wastewater biochemic...

Claims

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