CN106565036A - Method for catalytic ozonation and COD and total nitrogen removal from waste water at same time - Google Patents

Method for catalytic ozonation and COD and total nitrogen removal from waste water at same time Download PDF

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Publication number
CN106565036A
CN106565036A CN201610996137.6A CN201610996137A CN106565036A CN 106565036 A CN106565036 A CN 106565036A CN 201610996137 A CN201610996137 A CN 201610996137A CN 106565036 A CN106565036 A CN 106565036A
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China
Prior art keywords
nitrogen
organic wastewater
catalytic oxidation
cod
ozone
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Pending
Application number
CN201610996137.6A
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Chinese (zh)
Inventor
徐晓晨
宋帅楠
张若雨
姜宏斌
吴宗蔚
陈捷
杨凤林
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Dalian University of Technology
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Dalian University of Technology
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Priority to CN201610996137.6A priority Critical patent/CN106565036A/en
Publication of CN106565036A publication Critical patent/CN106565036A/en
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/38—Organic compounds containing nitrogen
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions

Abstract

The invention provides a catalytic ozonation nitrogen-containing organic wastewater treatment method, and belongs to the field of environment waste water treatment. According to the characteristic that nitrogen-containing organic wastewater contains poisonous, harmful and refractory organic compounds, ammonia nitrogen and organic nitrogen at the same time, hydroxyl radicals with higher redox potential are generated by catalytic ozone and jointly act with ozone, TN is removed while COD is removed, and the catalytic ozonation nitrogen-containing organic wastewater treatment method can serve a high concentration nitrogen-containing organic wastewater pretreatment process and can serve as a bio-chemical effluent advanced treatment process. The COD removal rate can reach 50% or above, and the total nitrogen removal rate can reach about 40%; and meanwhile, the biodegradability of the treated nitrogen-containing organic wastewater is obviously improved, the BOD5/CODCr ratio can be improved to 0.30, and the biodegradability is strengthened. The wastewater treatment process is simple in flow operation, industrialization is easily achieved, and the good market application prospect is achieved.

Description

A kind of method that O3 catalytic oxidation removes COD and total nitrogen in waste water simultaneously
Technical field
The present invention relates to a kind of O3 catalytic oxidation processes the advanced oxidation processes and device of nitrogenous effluent, belong to environment dirty Water harnessing field, is related specifically to a kind of O3 catalytic oxidation and removes COD (COD) and total nitrogen (TN) in waste water simultaneously Technique and device.
Background technology
With the promulgation of China's " ten, water ", wastewater treatment in China standard is stepped up.Whether from environmental conservation or From the perspective of enviromental protection enterprise's self-growth, sewage qualified discharge all will be its focus of attention.
Catalytic ozonation as a kind of emerging efficient, cleaning, good decolorizing effect high-level oxidation technology at place Reason high chroma, used water difficult to degradate and biochemical tailrace advanced process field are extensively applied.
Chinese patent CN102267756A discloses a kind of heterogeneous catalysis Ozone oxidation method and device, smelly with stagewise Oxygen is aoxidized and catalysis oxidation combines, and catalysis oxidation area adopts two kinds of catalyst of regular catalyst and particle porous catalyst, first A part of easily biodegradable organicses are removed by ozone oxidation；The difficulty that reaction is produced is by original in the Organic substance and waste water of ozone oxidation The hydroxyl radical reaction that produces with catalysis in catalysis oxidation area of hardly degraded organic substance, by mineralization of organic material and improve water outlet Biodegradability；But complex structure and ozone utilization ratio is not high enough.
Chinese patent CN104891713A patents CN105645559A individually disclose a kind of efficient ozone catalytic oxygen Change handling process, mainly for the treatment of the water body containing organic pollution and industrial wastewater.Ozone is in catalysis oxidizing tower to waste water In Organic substance and colourity there is preferable catalytic oxidation effect, but be difficult to accomplish for organic nitrogen in organic wastewater and ammonia The removal of nitrogen.
But also containing ammonia nitrogen and organic nitrogen, example in addition to containing poisonous, harmful, hardly degraded organic substance in actual sewage Such as acrylic nitrile waste water, aniline waste water, nitrobenzene waste water, sludge-digestion liquid, garbage leachate, livestock breeding wastewater, in biochemistry Or organic nitrogen in sewage is converted into ammonia nitrogen in chemical degradative processes, and traditional O3 catalytic oxidation method Main Function is to remove The biodegradability of COD, decolouring and raising organic wastewater with difficult degradation thereby, it is difficult to TN and ammonia nitrogen are effectively removed, causes ammonia nitrogen and total nitrogen Be difficult to reach discharge standard, additional carbon of still needing carries out subsequent treatment using nitration denitrification technique, exist complex treatment process, The high shortcoming of processing cost.
The content of the invention
The present invention is directed to problem above, proposes a kind of new catalytic ozone Oxidation Treatment technique.For nitrogenous organic wastewater The characteristics of, using ozone in the presence of catalyst, produce the higher hydroxyl radical free radical (OH) of oxidation-reduction potential and realize together When remove COD and TN effect.In this course, hardly degraded organic substance is destructurized, and Organic substance is finally oxidized to CO2And H2O, organic nitrogen is converted into ammonia nitrogen, and ammonia nitrogen is finally discharged in the form of nitrogen.So that the Organic substance of such waste water Content, toxicity and total nitrogen content are minimized, while improve the BOD of waste water5/CODCrRatio, biodegradability improves.
Technical scheme：
A kind of processing method of the nitrogenous organic wastewater of O3 catalytic oxidation, step is as follows：
Alkali adding tank is connected by adding alkali pump with adjustment pond, and nitrogenous organic wastewater Jing intake pumps are passed through ozone catalytic in regulating reservoir Tower bottom is reacted, at the same time oxygen Jing ozonators are passed through thereafter catalysis oxidation tower bottom aeration plate；Nitrogenous organic wastewater Catalysis oxidation layer is passed through after bottom mixes with ozone, and deoxidation pond is entered from the overflow water outlet of catalytic ozonation tower top, it is smelly Oxygen catalysis oxidizing tower tail gas, into tail gas destruction, is ultimately discharged into air Jing after collecting；
(1) nitrogenous organic wastewater is passed through regulating reservoir, and the temperature in regulating reservoir is 20～90 DEG C, and pH is 7～10, obtains uniform Nitrogenous organic wastewater；Wherein, the medicine for adjusting pH is sodium hydroxide；
(2) the uniform nitrogenous organic wastewater that step (1) is obtained is passed through catalysis ozone oxygen by intake pump Jing feed water flow gauge Change tower, the catalyst filled in O3 catalytic oxidation tower is carrying transition metal oxide or metal composite oxide catalyst, Catalyst filling rate is the 50～80% of O3 catalytic oxidation tower body product；The catalytic oxidation time of O3 catalytic oxidation be 0.5～ 10h；It is 90～120mg/L that O3 catalytic oxidation tower is passed through the concentration of ozone；
Wherein, carrier is γ-Al2O3, ature of coal column-shaped active carbon, natural clinoptilolite or volcanic rock granule；
Wherein, described transition metal for manganese, cobalt, cerium, ferrum or copper oxide, or two kinds in manganese, cobalt, cerium, ferrum, copper Above composite oxide of metal；
(3) water outlet gravity flow enters deoxidation pond Jing after catalytic ozonation, removes residual ozone；O3 catalytic oxidation tower tail gas Focus on after collection.
The handling process of the nitrogenous organic wastewater of O3 catalytic oxidation can also remove ammonia nitrogen while COD in removing waste water And total nitrogen, both can be used as the pretreating process of the nitrogenous organic wastewater of high concentration, again can be used as the advanced treating of bio-chemical effluent Technique.
Beneficial effects of the present invention：
1. for the nitrogenous organic wastewater of high concentration, (COD is more than 1000mg/L, and C/N ratios can effectively degrade nitrogenous less than 3) The clearance of the COD and total nitrogen in organic wastewater, COD can reach 50%～60%, and the clearance of total nitrogen reaches 40%, while Wastewater biodegradability after process is significantly improved, BOD5/CODCrThan can reach more than 0.30, going out aquatic toxicity reduces and decolourizes Effect is obvious.
2. (COD is less than 100mg/L to industrial wastewater for the nitrogenous organic wastewater of low concentration or after biochemical treatment, and total nitrogen is little In 30mg/L), the waste water COD, ammonia nitrogen and total nitrogen concentration Jing after the O3 catalytic oxidation of the present invention is processed can reach country one Level emission standard A (GB18918-2002).
3. the sewage treatment technology process is simple to operate, it is easy to industrialization, while having preferable economic benefit and society Benefit.
Description of the drawings
Fig. 1 is the pretreating process figure of the nitrogenous organic wastewater of O3 catalytic oxidation.
In figure：1 regulating reservoir；2 heaters；3 regulating reservoirs are stirred；4 alkali adding tanks；5 add alkali stirring；6 add alkali pump；7 intake pumps；8 Feed water flow gauge；9 acid adding casees；10 acid addings are stirred；11 acid adding pumps；12 switch boards；13 ozonators；14 aeration plates；15 supports Layer；16 beds；17 deoxidation ponds；18 tail gas are destroyed.
Specific embodiment
Below in conjunction with accompanying drawing and technical scheme, the specific embodiment of the present invention is further illustrated.
Embodiment 1：
Liaoning Province's Fushun Petrochemical Company Acrylic Fibers Plant acrylonitrile plant effluent, waste water yield is 15m3/h, and COD is about 2000mg/L, total nitrogen is 600mg/L or so, and nitriles substance relative amount accounts for Organic substance 51% in raw water, and organic nitrogen accounts for total nitrogen More than 80%, BOD5/CODCr≈ 0.08, Biodegradability of Wastewater is poor.Using the pretreatment work of O3 catalytic oxidation acrylic nitrile waste water Skill, at 80 DEG C, pH is 7-9 to regulating reservoir output water temperature, enters the catalytic ozonation reaction tower for being filled with 60% catalyst, catalysis Agent is independent γ-Al2O3、γ-Al2O3Supported Manganese-cerium oxide (catalyst A) and γ-Al2O3Load cobalt/cobalt oxide (catalyst B), 6h is reacted, ton water unit interval ozone dosage is 0.15kg/ (ton water × hour), and the clearance of COD is respectively 29.1%th, 46.6% and 34.7%, the clearance of total nitrogen is respectively 13.8%, 20.9% and 39.4%, in catalyst A/B conditions Under, BOD5/CODCrRatio is improved to more than 0.30 by 0.08, and concrete water quality index is as shown in table 1.
Water quality index contrast after the acrylonitrile plant effluent before processing of table 1
Embodiment 2：
Ningxia Province Shizuishan City Tai Sha industrial park pharmacy biochemical tail waters, waste water yield be 500m3/h, bio-chemical effluent COD is about 100mg/L, and ammonia nitrogen is 8mg/L or so, and effluent color dilution is larger.It is biochemical using O3 catalytic oxidation advanced treatment process Water outlet enters regulating reservoir, and at 25 DEG C, pH is 6.5～7.5 to output water temperature, enters the catalytic ozonation for being filled with 60% catalyst Reaction tower, catalyst is γ-Al2O3Supported Manganese-cerium oxide (catalyst A) or γ-Al2O3Load cobalt/cobalt oxide (catalyst B), react 0.5 hour, ton water unit interval ozone dosage is 0.1kg/ ton water, the clearance of COD is respectively 60% He 55%, the clearance of total nitrogen is respectively 32.1% and 40.8%, and the clearance of ammonia nitrogen is respectively 42.8% and 57.7%, water outlet water Matter can reach country-level emission standard A (GB18918-2002).Concrete water quality index is as shown in table 1.
Water quality index contrast before and after the Tai Sha industrial parks pharmacy wastewater treatment of table 2
Certainly, described above is not limitation of the present invention, and the present invention is also not limited to above-mentioned case, the skill of this area Art personnel do the change of reaction condition in the essential scope of the present invention, and catalyst changes, also should be in the protection model of the present invention In enclosing.

Claims (5)

1. the processing method of the nitrogenous organic wastewater of a kind of O3 catalytic oxidation, it is characterised in that step is as follows：
(1) nitrogenous organic wastewater is passed through regulating reservoir, and the temperature in regulating reservoir is 20～90 DEG C, and pH is 7～10, is uniformly contained Nitrogen organic wastewater；
(2) the uniform nitrogenous organic wastewater that step (1) is obtained is passed through O3 catalytic oxidation tower by intake pump Jing feed water flow gauge, The catalyst filled in O3 catalytic oxidation tower is carrying transition metal oxide or metal composite oxide catalyst, catalyst Filling rate is the 50～80% of O3 catalytic oxidation tower body product；The catalytic oxidation time of O3 catalytic oxidation is 0.5～10h；Urge It is 90～120mg/L that change ozone oxidation tower is passed through the concentration of ozone；
(3) water outlet gravity flow enters deoxidation pond Jing after catalytic ozonation, removes residual ozone；O3 catalytic oxidation tower exhaust collection After focus on.
2. processing method according to claim 1, it is characterised in that described transition metal is manganese, cobalt, cerium, ferrum or copper Oxide, or two or more composite oxide of metal in manganese, cobalt, cerium, ferrum, copper.
3. processing method according to claim 1 and 2, it is characterised in that described carrier is γ-Al2O3, ature of coal column Activated carbon, natural clinoptilolite or volcanic rock granule.
4. processing method according to claim 1 and 2, it is characterised in that adjust pH using sodium hydroxide.
5. processing method according to claim 3, it is characterised in that adjust pH using sodium hydroxide.
CN201610996137.6A 2016-11-11 2016-11-11 Method for catalytic ozonation and COD and total nitrogen removal from waste water at same time Pending CN106565036A (en)

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107473435A (en) * 2017-08-01 2017-12-15 云南省贵金属新材料控股集团有限公司 A kind of catalysed oxidation processes of low concentration bio-refractory industrial organic waste water processing
CN108178283A (en) * 2017-12-27 2018-06-19 苏州大学 The method for removing organic matter in high-chloride wastewater
CN108435180A (en) * 2018-02-05 2018-08-24 北京铭泽源环境工程有限公司 A kind of support type ozone high grade oxidation catalyst and preparation method thereof
CN109264845A (en) * 2018-11-19 2019-01-25 大连理工大学 A kind of device and method of reverse osmosis concentrated water organic matter and ammonia nitrogen removal simultaneously
CN109534478A (en) * 2018-11-28 2019-03-29 深圳大学 Ceramic membrane, preparation method, device and the application that chemical nickle-plating wastewater contact break is closed
CN109694160A (en) * 2019-01-11 2019-04-30 浙江奇彩环境科技股份有限公司 A kind of minimizing technology of waste water foul odour
CN110038588A (en) * 2019-05-17 2019-07-23 湖南夏朗环保科技有限公司 A kind of high concentrated organic wastewater processing special-purpose catalyst and wastewater treatment method
CN110143690A (en) * 2019-05-09 2019-08-20 知合环境（北京）有限责任公司 A kind of processing method of aquiculture waste water
CN111036221A (en) * 2019-12-17 2020-04-21 华侨大学 Preparation method of metal supported catalyst for removing ammonia nitrogen in water by moderate catalytic ozonation
CN113354215A (en) * 2021-07-06 2021-09-07 山东产研生态环境研究院有限公司 Method for treating epichlorohydrin wastewater
CN114409177A (en) * 2021-12-21 2022-04-29 泉州南京大学环保产业研究院 Treatment process of litopenaeus vannamei culture tail water
CN114477607A (en) * 2022-03-23 2022-05-13 中国恩菲工程技术有限公司 Treatment system and treatment method for industrial wastewater
CN114524577A (en) * 2022-01-24 2022-05-24 清华大学 Ultra-low emission advanced treatment method and system for industrial wastewater difficult to degrade
CN115196832A (en) * 2022-07-19 2022-10-18 郑州中科新兴产业技术研究院 Ozone oxidation technology for high-concentration wastewater treatment

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CN102126781A (en) * 2011-04-20 2011-07-20 中国石油天然气集团公司 Method for treating reverse osmosis concentrates of petrochemical wastewater
CN202924812U (en) * 2012-11-14 2013-05-08 北京赛科康仑环保科技有限公司 Organic wastewater ozone catalytic oxidation treatment device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102126781A (en) * 2011-04-20 2011-07-20 中国石油天然气集团公司 Method for treating reverse osmosis concentrates of petrochemical wastewater
CN202924812U (en) * 2012-11-14 2013-05-08 北京赛科康仑环保科技有限公司 Organic wastewater ozone catalytic oxidation treatment device

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107473435B (en) * 2017-08-01 2020-12-18 云南省贵金属新材料控股集团有限公司 Catalytic oxidation method for treating low-concentration hardly biodegradable industrial organic wastewater
CN107473435A (en) * 2017-08-01 2017-12-15 云南省贵金属新材料控股集团有限公司 A kind of catalysed oxidation processes of low concentration bio-refractory industrial organic waste water processing
CN108178283A (en) * 2017-12-27 2018-06-19 苏州大学 The method for removing organic matter in high-chloride wastewater
CN108435180A (en) * 2018-02-05 2018-08-24 北京铭泽源环境工程有限公司 A kind of support type ozone high grade oxidation catalyst and preparation method thereof
CN109264845A (en) * 2018-11-19 2019-01-25 大连理工大学 A kind of device and method of reverse osmosis concentrated water organic matter and ammonia nitrogen removal simultaneously
CN109534478A (en) * 2018-11-28 2019-03-29 深圳大学 Ceramic membrane, preparation method, device and the application that chemical nickle-plating wastewater contact break is closed
CN109694160A (en) * 2019-01-11 2019-04-30 浙江奇彩环境科技股份有限公司 A kind of minimizing technology of waste water foul odour
CN110143690A (en) * 2019-05-09 2019-08-20 知合环境（北京）有限责任公司 A kind of processing method of aquiculture waste water
CN110038588A (en) * 2019-05-17 2019-07-23 湖南夏朗环保科技有限公司 A kind of high concentrated organic wastewater processing special-purpose catalyst and wastewater treatment method
CN111036221A (en) * 2019-12-17 2020-04-21 华侨大学 Preparation method of metal supported catalyst for removing ammonia nitrogen in water by moderate catalytic ozonation
CN111036221B (en) * 2019-12-17 2022-07-29 华侨大学 Preparation method of metal supported catalyst for removing ammonia nitrogen in water by moderate catalytic ozonation
CN113354215A (en) * 2021-07-06 2021-09-07 山东产研生态环境研究院有限公司 Method for treating epichlorohydrin wastewater
CN114409177A (en) * 2021-12-21 2022-04-29 泉州南京大学环保产业研究院 Treatment process of litopenaeus vannamei culture tail water
CN114524577A (en) * 2022-01-24 2022-05-24 清华大学 Ultra-low emission advanced treatment method and system for industrial wastewater difficult to degrade
CN114477607A (en) * 2022-03-23 2022-05-13 中国恩菲工程技术有限公司 Treatment system and treatment method for industrial wastewater
CN115196832A (en) * 2022-07-19 2022-10-18 郑州中科新兴产业技术研究院 Ozone oxidation technology for high-concentration wastewater treatment

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Application publication date: 20170419