CN109354324A - Sewage water treatment method - Google Patents

Sewage water treatment method Download PDF

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Publication number
CN109354324A
CN109354324A CN201811470089.2A CN201811470089A CN109354324A CN 109354324 A CN109354324 A CN 109354324A CN 201811470089 A CN201811470089 A CN 201811470089A CN 109354324 A CN109354324 A CN 109354324A
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CN
China
Prior art keywords
sewage
tank
pool
primary sedimentation
sedimentation tank
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
CN201811470089.2A
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Chinese (zh)
Inventor
丁斌
王艨
陈晓菊
郝泽源
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China 22MCC Group Corp Ltd
Original Assignee
China 22MCC Group Corp 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 China 22MCC Group Corp Ltd filed Critical China 22MCC Group Corp Ltd
Priority to CN201811470089.2A priority Critical patent/CN109354324A/en
Publication of CN109354324A publication Critical patent/CN109354324A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • 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
    • C02F1/24—Treatment of water, waste water, or sewage by flotation
    • 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
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • 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
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F2001/007—Processes including a sedimentation step
    • 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes

Abstract

The present invention relates to a kind of sewage water treatment method, include the following steps: that the waste water after fine fack enters distributing reservoir；Distributing reservoir water PH is in abnormality, and emergency gate automatically turns on, and the sewage of abnormal emission flows into accident pool；Distributing reservoir is by reasonable 2 primary sedimentation tanks of dispensing of sewage under normal circumstances；Primary sedimentation tank sewage enters flotation tank；Flotation tank sewage enters hydrolysis acidification pool；Hydrolysis acidification pool sewage enters aeration tank；Oxygen is provided by air blower, removes most polluter heel row wherein by aerobic microbiological to subsequent processing workshop section.Sewage water treatment method of the present invention is adjusted according to water change of water quality, and passes through multistep treatment, can be improved the component into biochemistry pool sewage, be enhanced the treatment effeciency of activated sludge, it is ensured that effluent quality is met environmental requirements, and reduces owner's running cost.Bring water quality changes or part maintenance period, this technique can automatically adjust due to factory technics change simultaneously.

Description

Sewage water treatment method
Technical field
The present invention relates to sewage treatment process combined applications, are mainly used in papermaking, oil refining, liquor industry sewage treatment work Section, in particular to a kind of sewage water treatment method.
Background technique
Because industrial project sewage treatment discharge standard is higher, especially slurrying, paper industry, environmental requirement is very strict. The process standard, energy consumption, chemicals for promoting production and operation unit to fully take into account sewage treatment use, i.e., economy can Row, and technically meet plant requirements.
Multistage activated sludge biochemical waste water processes generally use at present, but due to most of water quality of industrial sewage ratio The reasons such as more single, process flow are more single.Production unit more focuses on cost of investment and operation cost and treatment effect, So, in face of more complicated sewage quality, it should improve and optimize traditional process flow, make sewage treating efficiency as far as possible Reach maximization.
Traditional industry sewage treatment process are as follows: production waste → thick, fine fack → primary sedimentation tank → activated sludge aeration Pond → secondary settling tank → air flotation cell → filtration system → water outlet.
Sewage treatment industry is selected the superior and eliminated the inferior in recent years, and many outstanding sewage treatment process emerge, including PURAC's SELAC system (pond is selected to add activated sludge aeration tank) as main process, such as: production waste → thick, fine fack → is just heavy Pond → selection pond → activated sludge aeration tank → secondary settling tank → air flotation cell → filtration system → water outlet；The MBP- of AQUAFLOW Selector plug flow process (Multilevel biochemistry treatment aeration tank selector) is used as core process.
However pretreatment process is relatively simple before aerobic aeration pond, the method for mostly using physical separation, to can not biology drop The solid of solution, colloid removal efficiency are lower, so that biochemistry pool inefficiency, activated sludge are loose.It can not basis after building up simultaneously Water quality and water adjusting process device operating status.
Summary of the invention
In view of the deficiency of the prior art, the present invention provides a kind of improvement biochemical system flow condition, enhancing activity Efficiency of sludge treatment reduces the quantity that not bio-degradable substance enters biochemistry pool, lifting system effluent index, it is ensured that sewage system It unites stable sewage water treatment method.
The technical solution used in the present invention is:
A kind of sewage water treatment method, includes the following steps:
Production waste is by flowing into thick, fine fack stream/inflow distributing reservoir；
Distributing reservoir handles sewage and passes through pipeline stream/feeding coagulation, primary sedimentation tank；
Primary sedimentation tank handles water and passes through pipeline stream/feeding flotation tank；
Flotation tank handles sewage and is sent into hydrolysis acidification pool by stream/pipeline；
Hydrolysis acidification pool handles sewage and passes through pipeline stream/feeding aeration tank；
Aeration tank handles sewage and flows into secondary settling tank；
Secondary settling tank handles sewage stream/feeding flocculation sedimentation tank；
Flocculation sedimentation tank handles sewage stream/feeding air flotation cell；
After air flotation cell processing then sewage carries out sewage discharge by filtration system.
Waste water after fine fack enters distributing reservoir:
PH measuring instrument is installed in distributing reservoir, controls adding for soda acid, adjusts pH value, as monitoring distributing reservoir water PH 5min or more time when in an abnormal state, the emergency gate for being installed on distribution pool wall automatically turn on, and the sewage of abnormal emission passes through Pipeline send/accident pool is flowed into, temporary in accident pool, pond PH to be allocated slowly returns to distributing reservoir after restoring normal again；
Distributing reservoir gives sewage reasonable distribution to 2 primary sedimentation tanks under normal circumstances:
When the pool equipment that sank originally needs repairing, the inflow of 2 primary sedimentation tanks is adjusted, design, which meets, works as a set of primary sedimentation tank When maintenance of equipment, another set of primary sedimentation tank equipment can be run under 140% treating capacity of design discharge with the short time, realize that full factory does not stop Machine maintenance；
The sewage of distributing reservoir enters primary sedimentation tank, enters flotation tank from primary sedimentation tank；
Supplement of this process flow air bearing as primary sedimentation tank, main function are to realize further be separated by solid-liquid separation.
The principle of air-float technology: air-float technology is one and separates the efficiently quick method of solid particle from water and waste water. Its working principle is that processed effluent part circulation flows into dissolving, under forced air state, air supersaturation dissolution, Then it is mixed in the inlet of flotation tank with the raw water that flocculant is added, since pressure reduces, oversaturated air is released, Micro-bubble is formd, is attached on suspended matter rapidly, it is promoted to the surface of flotation tank.So as to form being easy to remove Sludge floating layer, heavier solid species precipitate is also removed in bottom of pond.
Flotation tank sewage enters hydrolysis acidification pool；
Hydrolysis acidification pool sewage enters aeration tank；
The sewage for entering aeration tank is created certain simultaneous oxygen environment and hydrolysis acidification occurs by hydrolysis acidification pool, in acidification pool Middle automatic gauge adds nutritive salt required for biochemical reaction, including nitrogen and phosphorus；
Hydrolysis stage is the necessary process of larger molecular organics degradation, and larger molecular organics are wanted to be utilized by the microorganism, It must be first hydrolyzed to small organic molecule, just can enter in bacterial cell further degrade in this way.Acidification stage is organic matter drop The speed-raising process of solution, because the small organic molecule after hydrolysis is further converted to simple compound and is secreted into cell by it Outside.
Hydrolysis acidification pool is entered by the sewage that flotation tank flows out, after hydrolysis acidification, the main body into biological treatment is constructed Object-aerobic aeration pond provides oxygen by air blower, removes most polluter heel row wherein by aerobic microbiological To subsequent processing workshop section.
The sewage is no less than 1h in the effective stay time of distributing reservoir, just heavy coagulating time >=30s；Flocculation reaction Time >=15min, primary sedimentation tank precipitate load 0.7-1.2m3/m2·h；Hydrolytic acidification time 4-8h, sedimentation in secondary sedimentation tank load 0.5- 0.8m3/m2H, flocculation sedimentation tank Design cooling load 0.7-1.2m3/m2·h。
The present invention compared with the prior art the utility model has the advantages that
Sewage water treatment method of the present invention is adjusted according to water change of water quality, and passes through multistep treatment, can be improved Into the component of biochemistry pool sewage, enhance the treatment effeciency of activated sludge, it is ensured that effluent quality is met environmental requirements, and reduces owner Running cost.Bring water quality changes or part maintenance period, this technique can be adjusted automatically due to factory technics change simultaneously It saves and ensures that factory operates normally.
Sewage water treatment method of the present invention can supplement the underload of primary sedimentation tank because of the use of flotation tank, thus primary sedimentation tank The civil engineering amount in pond is greatly reduced；Biochemical and chemical sludge can be separated and be disposed, and meet environmental protection requirement；Because of hydrolysis acidification pool It uses, reduces the load of aeration tank, reduce sludge yield, because of the 50-70% that the load of aeration tank is sewage treatment plant's load, So the economy for reducing the load of aeration tank is considerable；There is whole maintenance or modular repair situation in the pool equipment that sank originally, Flotation tank can temporarily replace primary sedimentation tank；Due to Multilevel biochemistry treatment, guarantee water quality high reliablity.
Detailed description of the invention
Fig. 1 is the waste water processes figure of sewage water treatment method of the present invention.
Specific embodiment
Referring to the drawings and embodiment the present invention will be described in detail:
Attached drawing 1 includes the following steps: it is found that a kind of sewage water treatment method
A kind of sewage water treatment method, includes the following steps:
Production waste is by flowing into thick, fine fack stream/inflow distributing reservoir；
Distributing reservoir handles sewage and passes through pipeline stream/feeding coagulation, primary sedimentation tank；
Primary sedimentation tank handles water and passes through pipeline stream/feeding flotation tank；
Flotation tank handles sewage and is sent into hydrolysis acidification pool by stream/pipeline；
Hydrolysis acidification pool handles sewage and passes through pipeline stream/feeding aeration tank；
Aeration tank handles sewage and flows into secondary settling tank；
Secondary settling tank handles sewage stream/feeding flocculation sedimentation tank；
Flocculation sedimentation tank handles sewage stream/feeding air flotation cell；
After air flotation cell processing then sewage carries out sewage discharge by filtration system.
Waste water after fine fack enters distributing reservoir:
PH measuring instrument is installed in distributing reservoir, controls adding for soda acid, adjusts pH value, as monitoring distributing reservoir water PH 5min or more time when in an abnormal state, the emergency gate for being installed on distribution pool wall automatically turn on, and the sewage of abnormal emission passes through Pipeline send/accident pool is flowed into, temporary in accident pool, pond PH to be allocated slowly returns to distributing reservoir after restoring normal again；
Distributing reservoir gives sewage reasonable distribution to 2 primary sedimentation tanks under normal circumstances:
When the pool equipment that sank originally needs repairing, the inflow of 2 primary sedimentation tanks is adjusted, design, which meets, works as a set of primary sedimentation tank When maintenance of equipment, another set of primary sedimentation tank equipment can be run under 140% treating capacity of design discharge with the short time, realize that full factory does not stop Machine maintenance；
The sewage of distributing reservoir enters primary sedimentation tank, enters flotation tank from primary sedimentation tank；
Flotation tank sewage enters hydrolysis acidification pool；
Hydrolysis acidification pool sewage enters aeration tank；
The sewage for entering aeration tank is created certain simultaneous oxygen environment and hydrolysis acidification occurs by hydrolysis acidification pool, in acidification pool Middle automatic gauge adds nutritive salt required for biochemical reaction, including nitrogen and phosphorus；
Hydrolysis acidification pool is entered by the sewage that flotation tank flows out, after hydrolysis acidification, the main body into biological treatment is constructed Object-aerobic aeration pond provides oxygen by air blower, removes most polluter heel row wherein by aerobic microbiological To subsequent processing workshop section.
By above-mentioned technique, system Inlet and outlet water main indicator is as follows:
Serial number Pollutant index System water inlet System water outlet Unit
1 CODcr 2500-3500 ≤250 Mg/L
2 BOD5 700-1000 ≤25 Mg/L
3 SS 700-1300 ≤100 Mg/L
The sewage is no less than 1h in the effective stay time of distributing reservoir, just heavy coagulating time >=30s；Flocculation reaction Time >=15min, primary sedimentation tank precipitate load 0.7-1.2m3/m2·h；Hydrolytic acidification time 4-8h, sedimentation in secondary sedimentation tank load 0.5- 0.8m3/m2H, flocculation sedimentation tank Design cooling load 0.7-1.2m3/m2·h。
After industrial production sewage (such as paper mill production waste) is collected, thick, thin lattice are set behind sewage collecting well Grid, it is therefore an objective to remove bulk solid object.
Distributing reservoir is set before primary sedimentation tank, behind flotation tank is set, distributing reservoir is adjusted according to pH value dynamic, is conducive to control The acid or alkali environment of primary sedimentation tank processed, further progress are separated by solid-liquid separation, and distributing reservoir+primary sedimentation tank+flotation tank is as biochemical preceding pretreatment work Section, can reduce primary sedimentation tank volume, i.e. reduction primary sedimentation tank size (diameter or perimeter), meanwhile, the corollary equipment of primary sedimentation tank is corresponding Reduction.After flotation tank, between aeration tank, a hydrolysis acidification pool is set, the effect of hydrolysis acidification pool can make to be aerated Load is reduced in pond, increases Biodegradability of Wastewater, further decomposes macromolecular.Enter secondary settling tank after aeration tank, subsequently into wadding Solidifying sedimentation basin, finally enters fillter section and is separated by solid-liquid separation.
The above described is only a preferred embodiment of the present invention, not making in any form to structure of the invention Limitation.Any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the invention, Belong within the scope of technical solution of the present invention.

Claims (2)

1. a kind of sewage water treatment method, includes the following steps:
A kind of sewage water treatment method, includes the following steps:
Production waste is by flowing into thick, fine fack stream/inflow distributing reservoir；
Distributing reservoir handles sewage and passes through pipeline stream/feeding coagulation, primary sedimentation tank；
Primary sedimentation tank handles water and passes through pipeline stream/feeding flotation tank；
Flotation tank handles sewage and is sent into hydrolysis acidification pool by stream/pipeline；
Hydrolysis acidification pool handles sewage and passes through pipeline stream/feeding aeration tank；
Aeration tank handles sewage and flows into secondary settling tank；
Secondary settling tank handles sewage stream/feeding flocculation sedimentation tank；
Flocculation sedimentation tank handles sewage stream/feeding air flotation cell；
After air flotation cell processing then sewage carries out sewage discharge by filtration system.
Waste water after fine fack enters distributing reservoir:
PH measuring instrument is installed in distributing reservoir, controls adding for soda acid, adjusts pH value, when monitoring distributing reservoir water PH 5min with Upper time when in an abnormal state, the emergency gate for being installed on distribution pool wall automatically turn on, and the sewage of abnormal emission sent by pipeline/ Accident pool is flowed into, temporary in accident pool, pond PH to be allocated slowly returns to distributing reservoir after restoring normal again；
Distributing reservoir gives sewage reasonable distribution to 2 primary sedimentation tanks:
When the pool equipment that sank originally needs repairing, the inflow of 2 primary sedimentation tanks is adjusted, design, which meets, works as a set of primary sedimentation tank equipment When maintenance, another set of primary sedimentation tank equipment can be run under 140% treating capacity of design discharge with the short time, realize that full factory does not shut down dimension It repairs；
The sewage of distributing reservoir enters primary sedimentation tank, enters flotation tank from primary sedimentation tank；
Flotation tank sewage enters hydrolysis acidification pool；
Hydrolysis acidification pool sewage enters aeration tank；
The sewage for entering aeration tank is created certain simultaneous oxygen environment and hydrolysis acidification occurs by hydrolysis acidification pool, in acidification pool certainly Dynamic metering adds nutritive salt required for biochemical reaction, including nitrogen and phosphorus；
Hydrolysis acidification pool is entered by the sewage that flotation tank flows out, after hydrolysis acidification, into the main body structures-of biological treatment Aerobic aeration pond provides oxygen by air blower, removes most polluter heel row wherein by aerobic microbiological to rear Continuous processing section.
2. sewage water treatment method according to claim 1, it is characterised in that: effective stay time of the sewage in distributing reservoir No less than 1h, first heavy coagulating time >=30s；Flocculation reaction time >=15min, primary sedimentation tank precipitate load 0.7-1.2m3/ m2·h；Hydrolytic acidification time 4-8h, sedimentation in secondary sedimentation tank load 0.5-0.8m3/m2H, flocculation sedimentation tank Design cooling load 0.7- 1.2m3/m2·h。
CN201811470089.2A 2018-11-28 2018-11-28 Sewage water treatment method Pending CN109354324A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811470089.2A CN109354324A (en) 2018-11-28 2018-11-28 Sewage water treatment method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811470089.2A CN109354324A (en) 2018-11-28 2018-11-28 Sewage water treatment method

Publications (1)

Publication Number Publication Date
CN109354324A true CN109354324A (en) 2019-02-19

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CN201811470089.2A Pending CN109354324A (en) 2018-11-28 2018-11-28 Sewage water treatment method

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Country Link
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101391853A (en) * 2008-11-03 2009-03-25 山东邹平开元化工石材有限公司 Chemical wastewater recovery processing technique and apparatus
US20120067796A1 (en) * 2006-08-11 2012-03-22 The University Of British Columbia Method and apparatus using hydrogen peroxide and microwave system for slurries treatment
CN203568944U (en) * 2013-11-18 2014-04-30 苏州膜华材料科技有限公司 Coking wastewater reuse treatment system
CN205473234U (en) * 2016-02-01 2016-08-17 武汉芳笛环保股份有限公司 Machining effluent disposal system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120067796A1 (en) * 2006-08-11 2012-03-22 The University Of British Columbia Method and apparatus using hydrogen peroxide and microwave system for slurries treatment
CN101391853A (en) * 2008-11-03 2009-03-25 山东邹平开元化工石材有限公司 Chemical wastewater recovery processing technique and apparatus
CN203568944U (en) * 2013-11-18 2014-04-30 苏州膜华材料科技有限公司 Coking wastewater reuse treatment system
CN205473234U (en) * 2016-02-01 2016-08-17 武汉芳笛环保股份有限公司 Machining effluent disposal system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
江晶 编: "《污水处理技术与设备》", 28 February 2014, 冶金工业出版社 *

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Application publication date: 20190219