CN109320013A - A kind of advanced treatment method for sewage water - Google Patents

A kind of advanced treatment method for sewage water Download PDF

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Publication number
CN109320013A
CN109320013A CN201811286969.4A CN201811286969A CN109320013A CN 109320013 A CN109320013 A CN 109320013A CN 201811286969 A CN201811286969 A CN 201811286969A CN 109320013 A CN109320013 A CN 109320013A
Authority
CN
China
Prior art keywords
sewage
treatment method
advanced treatment
ozone
sewage water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811286969.4A
Other languages
Chinese (zh)
Inventor
刘敏
李彦斌
楚润乾
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shouchuang Aihua (tianjin) Municipal & Environmental Engineering Co Ltd
Original Assignee
Shouchuang Aihua (tianjin) Municipal & Environmental Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shouchuang Aihua (tianjin) Municipal & Environmental Engineering Co Ltd filed Critical Shouchuang Aihua (tianjin) Municipal & Environmental Engineering Co Ltd
Priority to CN201811286969.4A priority Critical patent/CN109320013A/en
Publication of CN109320013A publication Critical patent/CN109320013A/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/725Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/78Treatment of water, waste water, or sewage by oxidation with ozone
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F2001/007Processes including a sedimentation step
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/105Phosphorus compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/16Nitrogen compounds, e.g. ammonia
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/08Multistage treatments, e.g. repetition of the same process step under different conditions
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/02Aerobic processes
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/02Aerobic processes
    • C02F3/12Activated sludge processes
    • C02F3/1236Particular type of activated sludge installations
    • C02F3/1268Membrane bioreactor systems

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

The present invention relates to a kind of advanced treatment method for sewage water, are included in sewage and add ozone, remove the COD in sewage;Water outlet sequentially enters biological aerated filter and membrane bioreactor, removes turbidity and nitrogen phosphorus.Using technical solution of the present invention, due to using high-efficiency multiple nanometer ozone oxidation catalyst, with O3+ BAF+MBR combination technique can realize that sewage treatment plant proposes mark upgrading, improve the biodegradability of secondary effluent by ozone pre-oxidation, improve dissolved oxygen, depth removes COD, stink, coloration, pathogen and algae etc., certain synergistic effect is played with the combination of bioanalysis technique, it synchronizes and denitrogenates phosphorus etc., realize water outlet up to ground Table IV class water.

Description

A kind of advanced treatment method for sewage water
Technical field
The present invention relates to water-treatment technology field more particularly to a kind of advanced treatment method for sewage water.
Background technique
To reinforce the management built and run to urban wastewater treatment firm, improve cities and towns quality of water environment, National Environmental is protected It is single to protect general bureau's publication " urban wastewater treatment firm pollutant emission standard " (GB 18918-2002) modification in 2006, it will be therein 4.1.2.2 modify are as follows: urban wastewater treatment firm water outlet be discharged into country and save the closings such as determining major river valley and lake, reservoir, When semiclosed waters, the A standard of primary standard is executed.Mark upgrading practice is proposed from the more than ten years, although the transformation taken Measure is different, but common measure is all to strengthen two stage treatment and increase advanced treating, and wherein advanced treating is to sewage plant nitrogen Phosphorus stable effluent quality reaches GB 18918-2002 level-one A standard and plays important function.
Developed area proposes requirements at the higher level to environment in recent years, has also issued harsher local discharge standard, such as " integrated wastewater discharge standard " (the DB 31-199-2009) that Shanghai City on October 1st, 2009 implements, Beijing January 1 in 2014 " water pollution synthesis discharge standard " (the DB 11/307-2013) that day implements.Improvement to some urban river waters simultaneously, partly Side proposes the standard requirements that water outlet reaches four class of surface water class three classes or class.These are to level-one A standard more into major step, nothing The difficulty for increasing treatment process is doubted, has not been reached requirement especially by two stage treatment is strengthened, advanced treating becomes upgrading Indispensable technique.
Summary of the invention
To solve problems of the prior art, the embodiment of the present invention provides a kind of advanced treatment method for sewage water, can The biodegradability of improvement secondary effluent, raising dissolved oxygen, depth removal COD (Chemical Oxygen Demand, COD), stink, coloration, pathogen and algae etc., and can synchronize and denitrogenate phosphorus etc., realize water outlet up to ground Table IV class water.
One side according to an embodiment of the present invention provides a kind of advanced treatment method for sewage water, comprising the following steps:
Ozone is added in sewage, removes the COD in sewage;
Water outlet sequentially enters biological aerated filter (Biological Aerated Filter, BAF) and membrane bioreactor (Membrane Bio-Reactor, MBR) removes turbidity (Suspended Solids, SS) and nitrogen phosphorus.
Further, ozone dosage is 10 to 20 milligrams every liter, and time of contact is 20 to 30 minutes.
Further, further comprising the steps of:
Ozone oxidation catalyst is added in sewage.
Further, the ozone oxidation catalyst is high-efficiency multiple nanometer ozone oxidation catalyst.
Further, the active component of the high-efficiency multiple nanometer ozone oxidation catalyst include transistion metal compound or Person's rare earth compound.
Further, the carrier of the high-efficiency multiple nanometer ozone oxidation catalyst include metal organic framework compound or The porous aromatic skeleton compound of person.
Further, the specific surface area of the ozone oxidation catalyst is 700 to 4000 square metres every gram.
The technical solution that the embodiment of the present invention provides has the advantages that
Due to using high-efficiency multiple nanometer ozone oxidation catalyst, with O3+ BAF+MBR combination technique can realize that sewage treatment plant mentions Mark upgrading, by ozone pre-oxidation improve secondary effluent biodegradability, improve dissolved oxygen, depth remove COD, stink, coloration, Pathogen and algae etc. play certain synergistic effect with the combination of bioanalysis technique, synchronize and denitrogenate phosphorus etc., realize water outlet up to ground Table IV class water.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not It can the limitation present invention.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention Example, and be used to explain the principle of the present invention together with specification.
Fig. 1 is the advanced treatment of wastewater flow chart in the embodiment of the present invention one.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment Described in embodiment do not represent all embodiments consistented with the present invention.On the contrary, they be only with it is such as appended The example of device and related application, method being described in detail in claims, some aspects of the invention are consistent.
Ozone high grade oxidation technique can effectively remove bio-refractory organic matter or some poisonous and harmful substances, improve useless Water biodegradability, quick decolorization taste removal, be therefore widely used in petrochemical wastewater, coking wastewater, dyeing waste water, paper waste, The advanced treating of the industrial wastewaters such as pharmacy waste water, food processing wastewater, refuse leachate.Processing to sewage, ozone is in addition to oxygen Change outside removal certain C OD, also playing pre-oxidation with biological advanced treatment process combination (such as BAF, BAC) improves the function of biodegradability Can, and it is responsible for decoloration disinfection, the dosage of general tens mg/L.And to high-concentration hardly-degradable waste water, then need higher ozone Dosage and addition catalyst direct oxidation organic matter, to reduce the COD load of biological treatment below, and will be difficult to degrade big Molecular organic is converted into biodegradable small organic molecule.
Fig. 1 is the advanced treatment of wastewater flow chart in the embodiment of the present invention one.As shown in Figure 1, the waste water processes The following steps are included:
Step 101 adds ozone and ozone oxidation catalyst in sewage, removes the COD in sewage.
Ozone oxidation catalyst is high-efficiency multiple nanometer ozone oxidation catalyst.Active component includes transistion metal compound Perhaps rare earth compound carrier includes metal organic framework compound or porous aromatic skeleton compound, specific surface area It is 700 to 4000 square metres every gram, ozone utilization rate can be made to promote 60% or more.
Using grid, conditioning tank, biochemical treatment unit, secondary settling tank, catalytic ozonation technique unit, wherein ozone is added 10 mg/L, 30 min of time of contact are measured, 24.30 mg/L of COD, COD removal rate 51.4%, while other indices are discharged All reach IV class water quality standard of surface water.
Step 102, water outlet sequentially enter BAF and MBR, remove SS and nitrogen phosphorus.
In another embodiment, ozone and ozone oxidation catalyst are added in sewage first, is removed in sewage COD。
Ozone oxidation catalyst is high-efficiency multiple nanometer ozone oxidation catalyst.Active component includes transistion metal compound Perhaps rare earth compound carrier includes metal organic framework compound or porous aromatic skeleton compound, specific surface area It is 700 to 4000 square metres every gram, ozone utilization rate can be made to promote 60% or more.
Using grid, conditioning tank, biochemical treatment unit, secondary settling tank, catalytic ozonation technique unit, wherein ozone is added 20 mg/L, 20 min of time of contact are measured, 20.32 mg/L of COD, COD removal rate 59.36%, while other indices are discharged All reach IV class water quality standard of surface water.
Then, water outlet sequentially enters BAF and MBR, removes SS and nitrogen phosphorus.
Using the technical solution of above-described embodiment, due to using high-efficiency multiple nanometer ozone oxidation catalyst, with O3+ BAF+MBR combination technique can realize that sewage treatment plant proposes mark upgrading, improve the biodegradability of secondary effluent by ozone pre-oxidation, Dissolved oxygen is improved, depth removes COD, stink, coloration, pathogen and algae etc., plays certain association with the combination of bioanalysis technique Same-action synchronizes and denitrogenates phosphorus etc., realizes water outlet up to ground Table IV class water.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to of the invention its Its embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or Person's adaptive change follows general principle of the invention and including the undocumented common knowledge in the art of the present invention Or conventional techniques.
It should be understood that the present invention is not limited to the precise structure already described above and shown in the accompanying drawings, and And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.

Claims (7)

1. a kind of advanced treatment method for sewage water, which comprises the following steps:
Ozone is added in sewage, removes the COD in sewage;
Water outlet sequentially enters biological aerated filter and membrane bioreactor, removes turbidity and nitrogen phosphorus.
2. advanced treatment method for sewage water according to claim 1, which is characterized in that ozone dosage is every liter 10 to 20 milli Gram, time of contact is 20 to 30 minutes.
3. advanced treatment method for sewage water according to claim 1, which is characterized in that further comprising the steps of:
Ozone oxidation catalyst is added in sewage.
4. advanced treatment method for sewage water according to claim 3, which is characterized in that the ozone oxidation catalyst is efficient Porous nano ozone oxidation catalyst.
5. advanced treatment method for sewage water according to claim 4, which is characterized in that the high-efficiency multiple nanometer ozone oxidation The active component of catalyst includes transistion metal compound or rare earth compound.
6. advanced treatment method for sewage water according to claim 4, which is characterized in that the high-efficiency multiple nanometer ozone oxidation The carrier of catalyst includes metal organic framework compound or porous aromatic skeleton compound.
7. advanced treatment method for sewage water according to claim 3, which is characterized in that the ratio table of the ozone oxidation catalyst Area is 700 to 4000 square metres every gram.
CN201811286969.4A 2018-10-31 2018-10-31 A kind of advanced treatment method for sewage water Pending CN109320013A (en)

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CN201811286969.4A CN109320013A (en) 2018-10-31 2018-10-31 A kind of advanced treatment method for sewage water

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110498560A (en) * 2019-07-23 2019-11-26 广东莞绿环保工程有限公司 A kind of textile printing and dyeing wastewater processing method

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