CN105836882A - Method of improving hydrolytic acidification of petrochemical wastewater - Google Patents
Method of improving hydrolytic acidification of petrochemical wastewater Download PDFInfo
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- CN105836882A CN105836882A CN201610396985.3A CN201610396985A CN105836882A CN 105836882 A CN105836882 A CN 105836882A CN 201610396985 A CN201610396985 A CN 201610396985A CN 105836882 A CN105836882 A CN 105836882A
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- hydrolysis acidification
- sludge
- acidification pool
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- mud
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2806—Anaerobic processes using solid supports for microorganisms
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
- C02F2103/365—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds from petrochemical industry (e.g. refineries)
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/22—O2
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
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- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Activated Sludge Processes (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a method of improving hydrolytic acidification of petrochemical wastewater. The method includes following steps: step 1, arranging an elastic filler; step 2, selecting sampling points; step 3, enabling sludge to flow back to increase sludge-water mixing ratio; step 4, adjusting flowing speed and flow of sludge-water; step 5, lowering dissolved oxygen DO. The method has the advantages that biodegradability of the wastewater is improved, macromolecular organic matters are converted into micromolecular ones through film formation of the filler; the dissolved oxygen DO is lowered; deposition of sludge in a hydrolytic acidification pool is prevented effectively, the sludge-water mixing ratio is increased, and activated sludge is fully utilized; a sludge pump room intermittently enables sludge to flow back into a water incoming end of the hydrolytic acidification pool to enable ORP to be within minus 300-minus 100 mv, and hydrolytic acidification effect is optimized; according to the sampling points, realtime monitoring is performed, so that the dissolved oxygen DO of the hydrolytic acidification pool is lowered; part of the sludge discharged outside is pumped back into the water incoming end of the hydrolytic acidification pool so that sludge-water mixing effect is improved effectively; glucose is added into the water incoming end of the hydrolytic acidification pool, so that nutrient of microorganisms is increased, DO is lowered, and film formation effect is improved.
Description
Technical field
The invention belongs to water treatment field, especially relate to a kind of method improving petrochemical wastewater hydrolysis acidification.
Background technology
Hydrolysis (acidifying) processing method is a kind of method between aerobic and anaerobic treatment method, and other process combination
Processing cost can be reduced and improve treatment effeciency.Hydrolysis acidification technique is according to methanogen with the hydrolysis acid-producing bacteria speed of growth not
With, anaerobic treatment is controlled in shorter the first and second stage of anaerobic treatment in response time, i.e. in a large amount of hydrolytic bacterias, acidifying
It is dissolved organic matter by insoluble hydrolysis of organic matter under bacterium effect, the macromolecular substances of difficult for biological degradation is converted into easy biology
The process of the small-molecule substance of degraded, thus improve the biodegradability of waste water, establish good basis for subsequent treatment.
Analyzing from mechanism, hydrolyzing and being acidified is two stages of anaerobic digestion process, but different technique hydrolysis acidifications
Processing intent different.Hydrolysis purpose in hydrolysis acidification-aerobic biological treatment process mainly non-molten by original waste water
Solution property Organic substance is changed into dissolved organic matter, and the Organic substance of wherein difficult for biological degradation is mainly changed by particularly industrial wastewater
For the Organic substance of easily biological-degradable, improve the biodegradability of waste water, be beneficial to follow-up Aerobic Process for Treatment.In view of follow-up aerobic place
The energy consumption problem of reason, hydrolysis is mainly used in the pretreatment of low concentration used water difficult to degradate.Hydrolysis acid in mixing anaerobic digestion process
The purpose changed is the methane fermentation offer substrate for mixing anaerobic digestion process.And the product acid in TPAD technique is mutually
Product acid phase and methanogenic phase in being digested by mixing anaerobic separate, to create respective suitable environment.
In whole waste water processes, hydrolysis acidification technique is an important process, and it is aobvious on the impact of water treatment efficiency below
Writing, current hydrolysis acidification effect has two important factors, and first is dissolved oxygen DO, and second is muddy water mixing ratio, for factor
One, hydrolysis acidification is mainly preferably minimized the dissolved oxygen DO in waste water, the most preferably realizes hydrolysis acidification effect, the most just
It is to improve muddy water mixing ratio, allows hydrolysis acidification effect become apparent from.
But petrochemical wastewater hydrolysis acidification DeGrain at present, dissolved oxygen DO numerical value is the highest, and muddy water is not sufficiently mixed,
Even occur that mud is piled up, cause hydrolysis acidification effect undesirable.
Summary of the invention
The problem that the present invention is to solve petrochemical wastewater hydrolysis acidification weak effect, in order to reduce dissolved oxygen DO, improves muddy water
Mixing ratio, proposes a kind of method improving petrochemical wastewater hydrolysis acidification.
The technical solution used in the present invention is as follows:
A kind of method improving petrochemical wastewater hydrolysis acidification, it is characterised in that: comprise the following steps that
Step one: elastic filler is set: arranges filler support in hydrolysis acidification pool, and installs filler on support, is used for hanging
Film；
Step 2: select sample point: flow to according to sewage, be provided with 4 sample points at hydrolysis acidification pool solution space, in hydrolysis acid
Change and be set to No. 1, No. 2, No. 3 and No. 4 sample points successively between water inlet and the outlet in pond, be used for monitoring dissolved oxygen DO,
Meanwhile, muddy water mixed effect and biofilm situation are observed；
Step 3: sludge reflux: first: by vacuum tank and sludge pump, the mud of hydrolysis acidification pool back segment is got to leading portion and dives
At water agitator, it is allowed to mix rapidly with sewage；Second: the mud of mud pump house is intermittently back to hydrolysis acidification pool
Water inlet；3rd: by outside spoil disposal pipeline bottom hydrolysis acidification pool, the mud of row is through three-way pipeline, partial reflux is to hydrolysis acidification pool
Water inlet；4th, the short time strengthens hydrolysis acidification pool instant water coming-in amount and flow velocity, the mud of sedimentation at the bottom of disturbance pond, strengthens mud
Water mixed effect；Reduce dissolved oxygen DO；
Step 4: adjust the flow direction and the fluidised form of muddy water: 1 submersible agitator is placed in hydrolysis acidification pool leading portion and stage casing respectively, latent
Water agitator has direction, three, left, center, right to be available for regulation, time variant direction, changes the flow direction and the fluidised form of muddy water, reduces mud
Alluvial, increases muddy water mixed effect, reduces dissolved oxygen DO.
Further, in described step 3, bottom spoil disposal pipeline is provided with mudhole, and pipeline is provided with sludge pump, pipeline warp
Cross three way cock to be connected with hydrolysis acidification pool water inlet and sludge storage pool respectively.
Further, the mud pump house of described step 3 is connected by pipeline with the front end of hydrolysis acidification pool.
Further, in order to increase the nutrition of microorganism, increase biofilm effect, described step one adds glucose.
Compared with prior art, present invention have the advantage that
(1) improve wastewater biodegradability: biofilm, larger molecular organics is converted into little molecule.
(2) reduce dissolved oxygen DO, improve muddy water mixing ratio.
(3) the mud alluvial in effective precaution of hydrolysis acidification pool, improves muddy water mixing ratio, it is achieved activated sludge is the most sharp
With.
(4) backflow of sludge pump room intermittence, makes ORP between-300 ~-100 m v so that hydrolysis acidification effect is
Excellent.
(5) according to each sample point, carry out real-time monitoring, and then reduce hydrolysis acidification pool dissolved oxygen DO.
(6) partial sludge is returned again hydrolysis acidification pool water inlet end, be effectively increased muddy water mixing, by useful micro-life
Thing or antibacterial recycle.
(7) supplement glucose and add at hydrolysis acidification pool water inlet end, increase the nutrition of microorganism, reduce DO, increase biofilm
Effect.
Accompanying drawing explanation
Fig. 1 is sample point scattergram in hydrolysis acidification pool.
Detailed description of the invention
The present invention is described further below in conjunction with the accompanying drawings:
As shown in Figure 1: a kind of method improving petrochemical wastewater hydrolysis acidification, it is characterised in that: comprise the following steps that
Step one: elastic filler is set: arranges filler support in hydrolysis acidification pool, and installs filler on support, is used for hanging
Film；
Step 2: select sample point: flow to according to waste water, be provided with 4 sample points at hydrolysis acidification pool solution space, in hydrolysis acid
Change and be set to No. 1, No. 2, No. 3 and No. 4 sample points successively between water inlet and the outlet in pond, be used for monitoring dissolved oxygen DO,
Meanwhile, muddy water mixed effect and biofilm situation are observed；
Step 3: sludge reflux: first: by vacuum tank and sludge pump, the mud of hydrolysis acidification pool back segment is got to leading portion and dives
At water agitator, it is allowed to mix rapidly with sewage；Second: the mud of mud pump house is intermittently back to hydrolysis acidification pool
Water inlet；3rd: by outside spoil disposal pipeline bottom hydrolysis acidification pool, the mud of row is through three-way pipeline, partial reflux is to hydrolysis acidification pool
Water inlet；4th, the short time strengthens hydrolysis acidification pool instant water coming-in amount and flow velocity, the mud of sedimentation at the bottom of disturbance pond, strengthens mud
Water mixed effect；Reduce dissolved oxygen DO；
Step 4: adjust the flow direction and the fluidised form of muddy water: 1 submersible agitator is placed in hydrolysis acidification pool leading portion and stage casing respectively, latent
Water agitator has direction, three, left, center, right to be available for regulation, time variant direction, changes the flow direction and the fluidised form of muddy water, reduces mud
Alluvial, increases muddy water mixed effect, reduces dissolved oxygen DO.
In described step 3, bottom spoil disposal pipeline is provided with mudhole, and pipeline is provided with sludge pump, and pipeline connects through three
Head is connected with hydrolysis acidification pool water inlet and sludge storage pool respectively.
The mud pump house of described step 3 is connected by pipeline with the front end of hydrolysis acidification pool.
In order to increase the nutrition of microorganism, increase biofilm effect, described step one adds glucose.
Embodiment:
First in hydrolysis acidification, set up partition wall, in hydrolysis acidification pool, arrange filler support, and biofilm filler on support；?
Glucose is thrown in the inside, and microorganism obtains nutrition；The front end water inlet at hydrolysis acidification pool at hydrolysis acidification pool is laid No. 1 and is taken
Sampling point 1, the outlet in rear end is provided with No. 4 sample points 4, is then uniformly provided with No. 3 sample points 3 and No. 4 sample points 4 in centre,
Then carry out adding up dissolved oxygen DO parameter, according to dissolved oxygen DO parameter, meanwhile, observe muddy water mixed effect and biofilm feelings
Condition, first passes through sludge reflux and carries out reducing DO parameter, and sludge reflux has four kinds of modes:
First: by vacuum tank and sludge pump, the mud of hydrolysis acidification pool back segment is got at leading portion agitator, be allowed to and sewage
Mixing rapidly, is i.e. provided with pipeline between hydrolysis acidification pool back segment and leading portion agitator, and pipeline connects sludge pump and vacuum tank,
Sludge pump is operated, and vacuum tank maintains negative pressure, it is ensured that sucking sludge is working properly.
Second: mud pump house is connected by pipeline with hydrolysis acidification pool front end, the activity sludge reflux of mud pump house is arrived
Hydrolysis acidification pool front end, reduces dissolved oxygen DO, improves sludge water composition and division in a proportion.
3rd: be provided with spoil disposal pipeline bottom hydrolysis acidification pool, spoil disposal pipeline is provided with mudhole, spoil disposal connecting pipe of pipeline
Road sludge pump, pipeline is connected with the front end of hydrolysis acidification pool, is aspirated by pipeline sludge pump, the work will deposited in hydrolysis acidification pool
Property mud, flows to hydrolysis acidification pool front end by back of pipeline.Other partial sludge enter sludge storage pool.And then reduce dissolved oxygen DO
With raising muddy water mixing ratio.
4th: the short time strengthens hydrolysis acidification pool instant water coming-in amount and flow velocity, the mud of sedimentation at the bottom of disturbance pond, strengthen muddy water
Mixed effect；Reduce dissolved oxygen DO.
Then in order to further realize muddy water mixing ratio, adjust the flow direction of muddy water and fluidised form: hydrolysis acidification pool leading portion and
1 submersible agitator is placed in stage casing respectively, and submersible agitator has direction, three, left, center, right to be available for regulating, time variant direction,
Change the flow direction and the fluidised form of muddy water, reduce mud alluvial, increase muddy water mixed effect, reduce dissolved oxygen DO.
We choose 8:00 and 14:00 on the same day, and use same distribution well transport wastewater in hydrolysis acidification pool,
In hydrolysis acidification pool from chart 1 and 2 it can be seen that before Gai Zao, dissolved oxygen DO parameter is when 8:00, and each sample point divides
It is not: 0.95, No. 2 sample points of No. 1 sample point, 0.53, No. 4 sample points 0.31 of 0.75, No. 3 sample points；When 14:00, each
Sample point is: 0.85, No. 2 sample points of No. 1 sample point, 0.51, No. 4 sample points 0.30 of 0.72, No. 3 sample points.Improved hydrolysis
In acidification pool, dissolved oxygen DO parameter is when 8:00, and each sample point is respectively as follows: 0.78, No. 2 sample points 0.27,3 of No. 1 sample point
Number 0.11, No. 4 sample points 0.02 of sample point；When 14:00, each sample point is: 0.75, No. 2 sample points of No. 1 sample point
0.25,0.10, No. 4 sample points 0.01 of No. 3 sample points.
Table 1 is dissolved oxygen DO Parameter analysis table in the hydrolysis acidification pool before transformation
Table 2 is dissolved oxygen DO Parameter analysis table in improved hydrolysis acidification pool
Being combined with chart in sum, in the 8:00 moment, the dissolved oxygen DO numerical value of distribution well end waste water is about 1.05, because not having
Take any reduction DO numerical value measure, find that No. 1 sample point 1 dissolved oxygen DO numerical value maintains 0.95 from analysis chart, and below 3
Individual sample point dissolved oxygen DO numerical value reducing effect is less obvious, and the dissolved oxygen DO numerical value of last No. 4 sample points is undesirable.
As shown in table 2, after four kinds of sludge reflux modes are combined with the flow direction and fluidised form method adjusting muddy water, at 8:00
In the moment, from the dissolved oxygen DO of No. 1 sample point 1 compared to Figure 1, No. 1 sample point dissolved oxygen DO value can be controlled in 0.78, has significantly
Declining, the dissolved oxygen DO of 3 sample point detections after hydrolysis acidification pool is progressively reducing, and the dissolving of No. 4 last sample points
Oxygen DO parameter tends to 0, meets the requirement of the last water outlet of hydrolysis acidification.
The above, the only detailed description of the invention of the present invention, but the protection domain of invention is not limited thereto, and any ripe
Know those skilled in the art in the technical scope that the invention discloses, the change that can readily occur in or replacement, all should contain
Within the protection domain of invention.
Claims (4)
1. the method improving petrochemical wastewater hydrolysis acidification, it is characterised in that: comprise the following steps that
Step one: elastic filler is set: arranges filler support in hydrolysis acidification pool, and installs filler on support, is used for hanging
Film；
Step 2: select sample point: flow to according to waste water, be provided with 4 sample points at hydrolysis acidification pool solution space, in hydrolysis acid
Change and be set to No. 1, No. 2, No. 3 and No. 4 sample points successively between water inlet and the outlet in pond, be used for monitoring dissolved oxygen DO,
Meanwhile, muddy water mixed effect and biofilm situation are observed；
Step 3: sludge reflux: first: by vacuum tank and sludge pump, the mud of hydrolysis acidification pool back segment is got to leading portion and dives
At water agitator, it is allowed to mix rapidly with waste water；Second: the mud of mud pump house is intermittently back to hydrolysis acidification pool
Water inlet；3rd: by outside spoil disposal pipeline bottom hydrolysis acidification pool, the mud of row is through three-way pipeline, partial reflux is to hydrolysis acidification pool
Water inlet；4th, the short time strengthens hydrolysis acidification pool instant water coming-in amount and flow velocity, the mud of sedimentation at the bottom of disturbance pond, strengthens mud
Water mixed effect；Reduce dissolved oxygen DO；
Step 4: adjust the flow direction and the fluidised form of muddy water: 1 submersible agitator is placed in hydrolysis acidification pool leading portion and stage casing respectively, latent
Water agitator has direction, three, left, center, right to be available for regulation, time variant direction, changes the flow direction and the fluidised form of muddy water, reduces mud
Alluvial, increases muddy water mixed effect, reduces dissolved oxygen DO.
A kind of method improving petrochemical wastewater hydrolysis acidification the most according to claim 1, it is characterised in that: described step 3
Middle bottom spoil disposal pipeline is provided with mudhole, and pipeline is provided with pipeline sludge pump, and pipeline is sour with hydrolysis respectively through three way cock
Hua Chi water inlet and sludge storage pool connect.
A kind of method improving petrochemical wastewater hydrolysis acidification the most according to claim 1, it is characterised in that: described step 3
Mud pump house be connected by pipeline with the front end of hydrolysis acidification pool.
A kind of method improving petrochemical wastewater hydrolysis acidification the most according to claim 1, it is characterised in that: described step one
In add glucose at hydrolysis acidification pool leading portion.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962223A (en) * | 2010-08-06 | 2011-02-02 | 无锡市政设计研究院有限公司 | Method for hydrolyzing and acidizing sewage and hydrolysis acidification pool |
| CN101982430A (en) * | 2010-10-19 | 2011-03-02 | 江苏省环境科学研究院 | Novel concentric anaerobic baffled hydrolytic reactor |
| CN102329043A (en) * | 2011-08-02 | 2012-01-25 | 浙江商达环保有限公司 | Method for treating and printing and dyeing wastewater by using hydrolysis tank |
| WO2012158013A1 (en) * | 2011-05-13 | 2012-11-22 | Ronser Bio-Tech Sdn Bhd | Anaerobic treatment of organic wastewater |
| CN202968247U (en) * | 2012-11-28 | 2013-06-05 | 天津市绿通环保工程设备开发有限公司 | Hydrolysis acidification pool |
-
2016
- 2016-06-07 CN CN201610396985.3A patent/CN105836882B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962223A (en) * | 2010-08-06 | 2011-02-02 | 无锡市政设计研究院有限公司 | Method for hydrolyzing and acidizing sewage and hydrolysis acidification pool |
| CN101982430A (en) * | 2010-10-19 | 2011-03-02 | 江苏省环境科学研究院 | Novel concentric anaerobic baffled hydrolytic reactor |
| WO2012158013A1 (en) * | 2011-05-13 | 2012-11-22 | Ronser Bio-Tech Sdn Bhd | Anaerobic treatment of organic wastewater |
| CN102329043A (en) * | 2011-08-02 | 2012-01-25 | 浙江商达环保有限公司 | Method for treating and printing and dyeing wastewater by using hydrolysis tank |
| CN202968247U (en) * | 2012-11-28 | 2013-06-05 | 天津市绿通环保工程设备开发有限公司 | Hydrolysis acidification pool |
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