CN110054364A - A kind of sewage water treatment method and sewage disposal system - Google Patents
A kind of sewage water treatment method and sewage disposal system Download PDFInfo
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- CN110054364A CN110054364A CN201910441567.5A CN201910441567A CN110054364A CN 110054364 A CN110054364 A CN 110054364A CN 201910441567 A CN201910441567 A CN 201910441567A CN 110054364 A CN110054364 A CN 110054364A
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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
- 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
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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
- C02F3/30—Aerobic and anaerobic processes
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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
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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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
- C02F2301/046—Recirculation with an external loop
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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
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
Abstract
The present invention provides a kind of sewage water treatment method and sewage disposal system, the sewage water treatment method is that sewage is passed through biological reaction pool and is handled；The sewage for handling acquisition in previous step is precipitated, supernatant and pending mud are obtained；Pending mud is crushed；Breakdown products are screened, and is transmitted back to biological reaction pool and is handled again.Sewage water treatment method provided by the present invention and sewage disposal system can carry out broken recycling to sludge, not only reduce mud discharging, can also increase the metabolism treatment effeciency of biological reaction pool.
Description
Technical field
The present invention relates to water-treatment technology fields, specifically, being related to a kind of sewage water treatment method and sewage disposal system.
Background technique
With the gradually upgrading of China's industrialized level, trade effluent, sanitary sewage governing problem highlight, give city township
The environment in town brings high risks.It can be generally divided into physical method, chemical method and life about the common method of sewage treatment at present
Object method.Biological treatment is the metabolism by microorganism, makes having in solution, colloid and fine suspended state in waste water
Machine pollutant is converted into stable, innocuous substance treatment process.
Wherein, biological respinse pool technology is widely used, since treatment effeciency is high, secondary pollution is small according to the micro- life of effect
The difference of object metabolic way, reaction tank can be divided into that anaerobic pond, anoxic pond, aerobic tank etc. are several again, in conventional sewage treatment,
Often these three reaction tanks are used in conjunction, to achieve the effect that decompose each pollutant.However in above-mentioned biological reaction pool
After treatment process, a large amount of sludge can be generated in system, China commonly uses the methods of landfill, ocean processing, burning to handle these
Sludge.But with the increase of sewage load in recent years, traditional landfill, ocean processing the methods of are burned and be can no longer meet
It is required that.Therefore, this field needs a kind of reaction more fully sewage water treatment method and solves sewage treatment to improve treatment effeciency
Middle sludge generates excessive technical problem.
In view of this, proposing the present invention.
Summary of the invention
React more abundant the purpose of the present invention is to provide a kind of, at the higher sewage water treatment method for the treatment of effeciency and sewage
Reason system, to solve at least one technical problem in the prior art.
Specifically, the first aspect of the present invention, provides a kind of sewage water treatment method, includes the following steps:
S1: sewage is passed through biological reaction pool and is handled；
S2: the sewage that acquisition is handled in S1 is precipitated, and obtains supernatant and pending mud；
S3: pending mud is crushed；
S4: screening breakdown products, and is transmitted back to biological reaction pool and is handled again.
By adopting the above technical scheme, broken recycling can be carried out to sludge, and by screening to sludge crushing product,
Qualified sludge crushing product is handled again, not only reduces mud discharging, biological reaction pool can also be increased
Metabolism treatment effeciency.
Preferably, the biological reaction pool includes anaerobic zone, anoxic zone, aerobic zone, and the sewage passes sequentially through anaerobism
Area, anoxic zone, aerobic zone.
The dissolved oxygen concentration of the anaerobic zone is 0-0.2mg/l；The dissolved oxygen concentration of the anoxic zone is 0.2-0.4mg/
The dissolved oxygen concentration of l, the aerobic zone are greater than 2mg/l.
Preferably, the biological reaction pool further includes dissolved oxygen area, and the sewage passes sequentially through anaerobic zone, dissolved oxygen area, anoxic
Area, aerobic zone.
The dissolved oxygen concentration in the dissolved oxygen area is greater than 0.5mg/l.
Preferably, the biological reaction pool is additionally provided with pretreating zone before anaerobic zone, carries out at preliminary sedimentation to sewage
Reason.
Preferably, the dissolved oxygen concentration in the dissolved oxygen area is 0.5mg/l-1mg/l.
Preferably, the breaking method of the pending mud includes the following steps:
S301: pending mud is dissolved in sludge crushing liquid, obtains sludge solutions；
S302: sludge solutions are reacted under agitation 1-8 hours.
Wherein, the sludge crushing liquid includes sludge crushing agent.
Preferably, the sludge crushing agent includes hydrogen peroxide, EDTA- disodium.
Preferably, in the sludge crushing liquid, the concentration of EDTA- disodium is 0.04-0.25mol/l, hydrogen peroxide it is dense
Degree is 5-100mmol/l.
Preferably, the w/v (kg/l) of the pending mud and sludge crushing liquid is 20:1-10:5.
Preferably, in the step 302, ultrasonication is carried out to sludge solutions when stirring, is reacted 1-3 hours.More preferably
, the mode of ultrasonication is every progress ultrasound 30s, interval 1min.
Preferably, described the step of screening to breakdown products is to be dissolved in the breakdown products in enough water, 1h
The interior part for forming precipitating is unbroken sludge, and the part that precipitating is formed in 1-12h is that level-one is crushed sludge, shape in 12h-24h
Part at precipitating is two-stage crushing sludge, and the unprecipitated part of fashion is sufficiently broken sludge for 24 hours；The level-one is crushed sludge
It is transported to anaerobic zone to be handled again, the two-stage crushing sludge is transported to anoxic zone and is handled again, described sufficiently broken
Broken sludge is transported to aerobic zone and is handled again.
Applicant has found at work, by the recycling to sludge crushing product, although sludge quantity is reduced, in anaerobic zone
Spawn activity decreased significantly after a period of time, can have an adverse effect instead to whole sewage treating efficiency.?
In subsequent research, applicant speculates that the occurrence of such may be since the oxidisability of sludge crushing agent is strong, not only to dirt
Thallus in mud produce it is broken,, also can be to the strain of anaerobic zone into after anaerobic zone with the recycling of sludge crushing product
Have an adverse effect.
Hydrogen peroxide is as a kind of oxygen containing oxidant, and either it generates oxygen with strong oxidizing property or after decomposing
Characteristic, totally unfavorable influence can be generated to strain after it is with sludge crushing product reflux to anaerobic zone.However, application
People is but extremely found surprisingly that, when hydrogen peroxide is administered simultaneously with EDTA- disodium, can not only play good sludge crushing effect
Fruit, moreover it is possible to during subsequent recycling sludge crushing product, eliminate the influence of hydrogen peroxide.
Applicant speculates that EDTA- disodium maintains the acidic environment of solution, make hydrogen peroxide when broken sludge operates more
Add stabilization, and the presence of EDTA makes to produce a small amount of EDTA- chelate iron in sludge, further increases the broken work to sludge
With.Above-mentioned effect may cause the release of catalase in sludge thallus, to make hydrogen peroxide in subsequent screening process
In largely decompose, to eliminate the influence of hydrogen peroxide during subsequent recycling sludge crushing product.
The second aspect of the present invention, provides a kind of sewage disposal system, and the sewage disposal system includes biological respinse
Pond, settling zone, fracture area, screening area, the biological reaction pool are connect by pipeline with settling zone, and the settling zone passes through pipeline
It is connect with fracture area, by pipeline and sieve piecewise connection, the screening area is anti-by reflux line and biology in the fracture area pond
Pond is answered to connect.
Preferably, the biological reaction pool successively includes anaerobic zone, anoxic zone, aerobic zone.
The dissolved oxygen concentration of the anaerobic zone is 0-0.2mg/l；The dissolved oxygen concentration of the anoxic zone is 0.2-0.4mg/
The dissolved oxygen concentration of l, the aerobic zone are greater than 2mg/l.
Preferably, the biological reaction pool further includes dissolved oxygen area, and the dissolved oxygen area is arranged between anaerobic zone and anoxic zone.
The dissolved oxygen concentration in the dissolved oxygen area is greater than 0.5mg/l.
Preferably, the biological reaction pool is additionally provided with pretreating zone before anaerobic zone, carries out at preliminary sedimentation to sewage
Reason.
Preferably, floating zone, decanting zone, the junction setting of the floating zone, decanting zone are provided in the screening area
There is isolating device.
The isolating device is connected with isolating device control device.
Preferably, the screening area passes through reflux line respectively and is connected with anaerobic zone, anoxic zone, aerobic zone.
Preferably, deaerating plant is provided in the reflux line.
Preferably, deaerating plant is provided in the reflux line that the screening area is connected to anaerobic zone, anoxic zone.
Preferably, the deaerating plant includes several deoxygenation components, and the deoxygenation component includes deoxygenation sieve, the first limit
Fast plate, the second speed limit plate.
Preferably, the deoxygenation inter-module is every setting, and every group of deoxygenation component compartment is away from 10-30cm.
Preferably, the first speed limit plate, the second speed limit plate are arranged alternately, and flow to direction and tube body in obtuse angle in liquid
Angle.It is furthermore preferred that the angle is 100-150 °.
Preferably, the first speed limit plate is connected with deoxygenation sieve one end.
Preferably, the deoxygenation sieve, the first speed limit plate, the second speed limit plate are attached with deoxidizing compositions, the deoxygenation
Composition includes active constituent, catalyst, adhesive, and the active constituent includes sponge iron, and the catalyst includes silver, described
Adhesive includes bauxite.
By weight, the active constituent is 60-80 parts, and the catalyst is 1-2 parts, and described adhesive is 5-8 parts.
Preferably, the deoxidizing compositions further include synergist, and the synergist includes salicylic acid, citric acid, oxalic acid, carbon
Sour calcium.
By weight, the synergist is 15-22 parts, wherein salicylic acid is 4-8 parts, and the citric acid is 2-4 parts,
The oxalic acid is 2-4 parts, and the calcium carbonate is 4-8 parts.
Using the above scheme, carbon dioxide can be released when contacting acid solution due to calcium carbonate, is conducive to sponge iron
The formation in middle duct, can effectively improve the specific surface area of sponge iron, to increase oxygen removal efficiency.
Preferably, the preparation method of the deoxygenation sieve, the first speed limit plate or the second speed limit plate includes the following steps:
(1) active constituent is ground, and be sieved, make its partial size≤150 μm, it is spare；Adhesive and catalyst are ground, and
Sieving, makes its partial size≤100 μm, spare；
(2) active constituent after step (1) grinding is pressed mass volume ratio (g/ml) (1-2): (2-4) and deionized water are mixed
It closes；Then the adhesive after adding step (1) grinding under stirring, stirs evenly acquisition slurry；
(3) slurry made from step (2) is covered on deoxygenation sieve, the first speed limit plate or the second speed limit plate, in 550-
650 DEG C of starvation preroast 0.2-2h, then it is warming up to 800-1100 DEG C of starvation roasting 0.5-4h, naturally cool to room
Temperature to get.
Preferably, the step (2) is, by salicylic acid, citric acid, oxalic acid, mix in proportion after, press matter with deionized water
Measure volume ratio (g/ml) (2-4): (2-4) mixing obtains synergy solution, and the active constituent after step (1) grinding is added to
It states in synergy solution；Then adhesive and calcium carbonate after being separately added into step (1) grinding under stirring, stir evenly and obtain
Obtain slurry.
Deoxygenation sieve, the first speed limit plate or the second speed limit plate prepared using the above scheme has very strong oxygen scavenging ability,
It is arranged in pipeline, the oxygen in returned sludge solution can be effectively removed, keep the stability of anaerobic zone.
The third aspect of the present invention, additionally provides a kind of deoxidizing compositions, and the deoxidizing compositions include active constituent, urge
Agent, adhesive, the active constituent include sponge iron, and the catalyst includes silver, and described adhesive includes bauxite.
By weight, the active constituent is 60-80 parts, and the catalyst is 1-2 parts, and described adhesive is 5-8 parts.
Preferably, the deoxidizing compositions further include synergist, and the synergist includes salicylic acid, citric acid, oxalic acid, carbon
Sour calcium.
By weight, the synergist is 15-22 parts, wherein salicylic acid is 4-8 parts, and the citric acid is 2-4 parts,
The oxalic acid is 2-4 parts, and the calcium carbonate is 4-8 parts.
The third aspect of the present invention provides the preparation method of above-mentioned deoxidizing compositions, and described method includes following steps:
(1) active constituent is ground, and be sieved, make its partial size≤150 μm, it is spare；Adhesive and catalyst are ground, and
Sieving, makes its partial size≤100 μm, spare；
(2) active constituent after step (1) grinding is pressed mass volume ratio (g/ml) (1-2): (2-4) and deionized water are mixed
It closes；Then the adhesive after adding step (1) grinding under stirring, stirs evenly acquisition slurry；
(3) by slurry made from step (2) in 550-650 DEG C of starvation preroast 0.2-2h, then it is warming up to 800-
1100 DEG C of starvations roast 0.5-4h, cooled to room temperature to get.
Preferably, the step (2) is, by salicylic acid, citric acid, oxalic acid, mix in proportion after, press matter with deionized water
Measure volume ratio (g/ml) (2-4): (2-4) mixing obtains synergy solution, and the active constituent after step (1) grinding is added to
It states in synergy solution；Then adhesive and calcium carbonate after being separately added into step (1) grinding under stirring, stir evenly and obtain
Obtain slurry.
In conclusion the invention has the following advantages:
1. sewage water treatment method of the present invention can carry out broken recycling to sludge, not only reduce mud discharging,
The metabolism treatment effeciency of biological reaction pool can also be increased.
2. sewage water treatment method of the present invention uses EDTA- disodium and hydrogen peroxide as sludge crushing agent, no
It is only capable of playing good sludge crushing effect, moreover it is possible to during subsequent recycling sludge crushing product, eliminate hydrogen peroxide pair
The influence of strain in biological reaction pool.
3. sewage disposal system of the present invention, design rationally, is provided with deaeration plant in the duct, can be to dirt
In the case that mud carries out effectively broken recycling, the stabilization of anaerobic zone is kept, mud discharging is effectively reduced.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the schematic diagram of the first embodiment of sewage disposal system of the present invention；
Fig. 2 is the schematic diagram of second of embodiment of sewage disposal system of the present invention；
Fig. 3 is the schematic diagram that sewage disposal system of the present invention sieves pond；
Fig. 4 is the schematic cross-section of sewage disposal system reflux line of the present invention；
Fig. 5 is the schematic cross-section of another angle of sewage disposal system reflux line of the present invention；
Fig. 6 is the schematic diagram of sewage disposal system deoxygenation sieve of the present invention；
Description of symbols
Description of symbols through the above attached drawings can be more clearly understood and illustrate this hair in conjunction with the embodiment of the present invention
Bright technical solution.
1, biological reaction pool；11, anaerobic zone；12, anoxic zone；13, aerobic zone；14, dissolved oxygen area；15, pretreating zone；2, it sinks
Shallow lake pond；3, it is crushed pond；4, pond is sieved；41, floating zone；42, decanting zone；43, isolating device；44, control device；5, return pipe
Road；51, valve；52, deaerating plant；5211, deoxygenation sieve；5212, the first speed limit plate；5213, the second speed limit plate
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 method being described in detail in claims, some aspects of the invention are consistent.
It is only to be not intended to limit the invention merely for for the purpose of describing particular embodiments in terminology used in the present invention.
It is also intended in the present invention and the "an" of singular used in the attached claims, " described " and "the" including majority
Form, unless the context clearly indicates other meaning.It is also understood that term "and/or" used herein refers to and wraps
It may be combined containing one or more associated any or all of project listed.
The present invention will be described in detail by way of examples below.
The technology hand that anaerobic pond mentioned in the present invention, anoxic pond, aerobic tank are well known to the skilled person
Section, and strain therein is also all made of conventional bacterial classification, and with uniformity in different experiments example or embodiment.
Experimental example 1
Applicant carries out experimental study to sludge crushing agent in the lab.
The biological reaction pool selected in this experiment successively includes selection area, anaerobic zone, anoxic zone, aerobic zone, before experiment, control
The dissolved oxygen concentration of anaerobic zone processed is 0-0.2mg/l；The dissolved oxygen concentration of anoxic zone is 0.2-0.4mg/l, the dissolution of aerobic zone
Oxygen concentration is 2-4mg/l.
Experiment is selected from city domestic sewage with sewage, will pass sequentially through selection area, anaerobic zone, anoxic with a collection of sanitary sewage
Area, aerobic zone, and treated that sewage is passed through settling zone precipitates by above-mentioned steps.The sewage is small in anaerobic zone stop 5
When, it stops 5 hours in anoxic zone, is stopped 8 hours in aerobic zone, settling zone precipitates 4 hours, obtains pending mud.It will be above-mentioned
Pending mud packing, to guarantee to test the consistency of sludge used every time.
Pending mud is handled in accordance with the following steps:
(1) the sludge crushing liquid of the agent of sludge crushing containing 0.05mol/l is prepared；
(2) 100g pending mud is taken, is dissolved in 100ml sludge crushing liquid, sludge solutions are obtained；
(3) sludge solutions are stirred to react, continue 4h；
(4) product in step (3) being passed through screening pond, the part that precipitating is formed in 1h is unbroken sludge and weighs,
Remaining product is passed through anaerobic pond and is handled again；
(5) after whole system runs 10d, the vigor of strain in anaerobic zone is measured.
The anaerobic zone spawn activity measurement is using method described in Chinese invention patent application CN101520394A, specifically
, the temperature of water-soluble constant temperature oscillator is 35 DEG C, and vibration frequency is 50 beats/min, and the concentration of NaOH solution is 0.01mol/L, pH
Value is 12；Reaction substrate uses acetic acid, concentration 1200mg/L.100g anaerobic grain sludge is added in 100ml serum bottle,
Recording device starts the time, and then each half an hour records the methane gas volume added up in a graduated cylinder, obtains methane
The cumulative volume of gas and the relation curve of time calculate Vmax-CH4Numerical value.
Experimental result is as shown in table 1, every kind sludge crushing agent parallel laboratory test 5 times, be averaged.
Table 1
According to 1 content of table it is found that in sludge crushing ability, group 1-2 effect is unobvious, and group 3-5's is broken
Effect is significantly better than group 1-2, and all has statistical significance (p < 0.01)；And in group 3-5, although these three are dirty
Mud cracking agent can play the obvious fragmentation to sludge, but wherein, and best with 3 effect of group, with group 4,5 phase of group
Than all having statistical significance (p < 0.01)；It is worth noting that in the effect that hydrogen peroxide, EDTA- disodium is administered alone
In unconspicuous situation, the two is used in mixed way, sludge crushing effect is obviously improved, it was demonstrated that the two is in sludge crushing
During have good synergistic effect.
Further, according in table 1, group 1-2,4-6, it can be found that the crushing effect of sludge crushing agent is stronger, anaerobism
The spawn activity in area is bigger by being influenced, and is not obviously inconsistent with this rule in the data of group 3, according to experimental data it is found that group
Other 3 spawn activity is significantly stronger than group 1,4-5 (p < 0.01), it was demonstrated that, the combination of hydrogen peroxide and EDTA- disodium, Ke Yixian
Write the damage for reducing hydrogen peroxide to anaerobic zone strain.
Experimental example 2
Applicant carries out experimental study to the deaerating effect of deoxidizing compositions in the lab.
Deoxidizing compositions the preparation method is as follows:
Group a:
(1) 600g sponge iron is ground, and sieved with 100 mesh sieve spare；60g bauxite and 1g silver are ground, and cross 160 meshes
It is spare；
(2) sponge iron after step (1) grinding is mixed by mass volume ratio (g/ml) 1:2 with deionized water；Then exist
Bauxite and silver after adding step (1) grinding under stirring, stir evenly acquisition slurry；
(3) slurry made from step (2) is covered on deoxygenation sieve, the first speed limit plate or the second speed limit plate, in 600 DEG C
Starvation preroast 1.5h, then be warming up to 1000 DEG C of starvations roasting 3h, cooled to room temperature to get.
Group b:
(1) 600g sponge iron is ground, and sieved with 100 mesh sieve spare；60g bauxite and 1g silver are ground, and cross 160 meshes
It is spare；
(2) by 5g salicylic acid, 3g citric acid, 3g oxalic acid, in proportion mix after, with deionized water press mass volume ratio (g/
Ml) 1:1 is mixed, and obtains synergy solution, and the sponge iron after step (1) grinding is added in above-mentioned synergy solution；Then it is stirring
Bauxite, silver after being separately added into step (1) grinding under state are mixed, acquisition slurry is stirred evenly.
(3) slurry made from step (2) is covered on deoxygenation sieve, the first speed limit plate or the second speed limit plate, in 600 DEG C
Starvation preroast 1.5h, then be warming up to 1000 DEG C of starvations roasting 3h, cooled to room temperature to get.
Group c:
(1) 600g sponge iron is ground, and sieved with 100 mesh sieve spare；60g bauxite and 1g silver are ground, and cross 160 meshes
It is spare；
(2) by 5g salicylic acid, 3g citric acid, 3g oxalic acid, in proportion mix after, with deionized water press mass volume ratio (g/
Ml) 1:1 is mixed, and obtains synergy solution, and the sponge iron after step (1) grinding is added in above-mentioned synergy solution；Then it is stirring
Bauxite, silver and the 5g calcium carbonate after being separately added into step (1) grinding under state are mixed, acquisition slurry is stirred evenly.
(3) slurry made from step (2) is covered on deoxygenation sieve, the first speed limit plate or the second speed limit plate, in 600 DEG C
Starvation preroast 1.5h, then be warming up to 1000 DEG C of starvations roasting 3h, cooled to room temperature to get.
Group d:
(1) 600g sponge iron is ground, and sieved with 100 mesh sieve spare；60g bauxite and 1g silver are ground, and cross 160 meshes
It is spare；
(2) after mixing 5g salicylic acid, 3g citric acid, 3g oxalic acid, 5g calcium carbonate in proportion, mass body is pressed with deionized water
Product is mixed than (g/ml) 1:1, obtains synergy solution, and the sponge iron after step (1) grinding is added in above-mentioned synergy solution；So
Bauxite, silver after being separately added into step (1) grinding under stirring afterwards, stir evenly acquisition slurry.
(3) slurry made from step (2) is covered on deoxygenation sieve, the first speed limit plate or the second speed limit plate, in 600 DEG C
Starvation preroast 1.5h, then be warming up to 1000 DEG C of starvations roasting 3h, cooled to room temperature to get.
Group e:
(1) 600g sponge iron is ground, and sieved with 100 mesh sieve spare；60g bauxite and 1g silver are ground, and cross 160 meshes
It is spare；
(2) sponge iron after step (1) grinding is mixed by mass volume ratio (g/ml) 1:2 with deionized water；Then exist
Bauxite and silver and 5g calcium carbonate after adding step (1) grinding under stirring, stir evenly acquisition slurry；
(3) slurry made from step (2) is covered on deoxygenation sieve, the first speed limit plate or the second speed limit plate, in 600 DEG C
Starvation preroast 1.5h, then be warming up to 1000 DEG C of starvations roasting 3h, cooled to room temperature to get.
Group f:
600g sponge iron.
Group g:
600g sponge iron is weighed to mix with 1g silver, 60g bauxite.
The deoxidizing compositions that group a-e is obtained carry out water purification experiment, and steps are as follows:
(1) 100g deoxidizing compositions is taken to be placed in 500ml flask；
(2) deionized water of dissolved oxygen concentration 2mg/l is added, is settled to 500ml；
(3) 1h is stood, and separately sampled in 5min, 10min, 20min, 30min, 60min, detects solution oxygen concentration.
Above-mentioned experiment is repeated 5 times, and takes the average value of 5 experiments, experimental result is as shown in table 2.
Table 2
According to 2 result of table it is found that the deaerating effect of group a-e is superior to f, g group (p < 0.01), and group a deaerating effect
Better than group g, the preparation method for also demonstrating deoxidizing compositions in the present invention has a significant impact the deaerating effect of composition；Group
The deaerating effect difference of other b and group a are unobvious, and (data difference of 5-30min has statistical significance, and both when 60min
Deaerating effect do not have significant difference), this proves that salicylic acid, citric acid, oxalic acid are administered alone to deaerating effect in synergist
Influence it is unobvious；Meanwhile the deaerating effect indifference of group e and group a, it was demonstrated that calcium carbonate is administered alone pair in synergist
Deaerating effect is almost without influence；No matter however group c and group a, or compared with group b, d, deaerating effect is significantly improved
(p < 0.01), and the deaerating effect of group d and group b is without significant difference, this proof salicylic acid, citric acid, oxalic acid and carbonic acid
The collaboration of calcium uses, and has a significant impact to deaerating effect, but needs that carbon is added afterwards using salicylic acid, citric acid, oxalic acid is first added
The mode of sour calcium prepares composition.
Embodiment 1
S1: 1000kg sanitary sewage is delivered to anaerobic pond and carries out Anaerobic Treatment, sewage is 2 in the residence time of anaerobic pond
Hour；Denitrogenation dephosphorizing processing is carried out into anoxic pond from the sewage transport being discharged in anaerobic pond, sewage is in the stop of anoxic pond
Between be 2 hours；Aerobic biological process is carried out into aerobic tank from the sewage transport being discharged in anoxic pond, by the dissolved oxygen amount control in pond
System is controlled in 2-4mg/l, pH in 5.5-5.8, and residence time of the sewage in aerobic tank is 5 hours.
S2: the sewage transport being discharged from aerobic tank to sedimentation basin precipitates 3 hours, obtains supernatant and pending mud.
S3: being delivered to broken pond for precipitating sludge, then, according to the w/v of pending mud and sludge crushing liquid
(kg/l) sludge crushing liquid is added for 20:1, obtains sludge solutions, sludge solutions is reacted under agitation 1 hour.It is described
In sludge crushing liquid, the concentration of EDTA- disodium is 0.04mol/l, and the concentration of hydrogen peroxide is 5mmol/l.
S4: screening breakdown products, the breakdown products is dissolved in enough water, and the part of precipitating is formed in 1h
For unbroken sludge, the interior part for forming precipitating 1-12h is that level-one is crushed sludge, and the interior part for forming precipitating 12h-24h is two
The broken sludge of grade, the unprecipitated part of fashion is sufficiently broken sludge for 24 hours；The level-one is crushed sludge and is transported to anaerobic zone progress
It handles again, the two-stage crushing sludge is transported to anoxic zone and is handled again, and the sufficiently broken sludge is transported to aerobic
Area is handled again.
S5: supernatant and sludge are obtained in sedimentation basin again.
Embodiment 2
S1: 1000kg sanitary sewage is delivered to anaerobic pond and carries out Anaerobic Treatment, sewage is 6 in the residence time of anaerobic pond
Hour；Denitrogenation dephosphorizing processing is carried out into anoxic pond from the sewage transport being discharged in anaerobic pond, sewage is in the stop of anoxic pond
Between be 6 hours；Aerobic biological process is carried out into aerobic tank from the sewage transport being discharged in anoxic pond, by the dissolved oxygen amount control in pond
System is controlled in 2-4mg/l, pH in 5.5-5.8, and residence time of the sewage in aerobic tank is 10 hours.
S2: the sewage transport being discharged from aerobic tank to sedimentation basin precipitates 8 hours, obtains supernatant and pending mud.
S3: being delivered to broken pond for precipitating sludge, then, according to the w/v of pending mud and sludge crushing liquid
(kg/l) sludge crushing liquid is added for 10:5, obtains sludge solutions, sludge solutions is reacted under agitation 8 hours.It is described
In sludge crushing liquid, the concentration of EDTA- disodium is 0.25mol/l, and the concentration of hydrogen peroxide is 100mmol/l.
S4: screening breakdown products, the breakdown products is dissolved in enough water, and the part of precipitating is formed in 1h
For unbroken sludge, the interior part for forming precipitating 1-12h is that level-one is crushed sludge, and the interior part for forming precipitating 12h-24h is two
The broken sludge of grade, the unprecipitated part of fashion is sufficiently broken sludge for 24 hours；The level-one is crushed sludge and is transported to anaerobic zone progress
It handles again, the two-stage crushing sludge is transported to anoxic zone and is handled again, and the sufficiently broken sludge is transported to aerobic
Area is handled again.
S5: supernatant and sludge are obtained in sedimentation basin again.
Embodiment 3
S1: 1000kg sanitary sewage is delivered to anaerobic pond and carries out Anaerobic Treatment, sewage is 3 in the residence time of anaerobic pond
Hour；Denitrogenation dephosphorizing processing is carried out into anoxic pond from the sewage transport being discharged in anaerobic pond, sewage is in the stop of anoxic pond
Between be 3 hours；Aerobic biological process is carried out into aerobic tank from the sewage transport being discharged in anoxic pond, by the dissolved oxygen amount control in pond
System is controlled in 2-4mg/l, pH in 5.5-5.8, and residence time of the sewage in aerobic tank is 8 hours.
S2: the sewage transport being discharged from aerobic tank to sedimentation basin precipitates 6 hours, obtains supernatant and pending mud.
S3: being delivered to broken pond for precipitating sludge, then, according to the w/v of pending mud and sludge crushing liquid
(kg/l) sludge crushing liquid is added for 10:1, obtains sludge solutions, sludge solutions is reacted under agitation 5 hours.It is described
In sludge crushing liquid, the concentration of EDTA- disodium is 0.05mol/l, and the concentration of hydrogen peroxide is 50mmol/l.
S4: screening breakdown products, the breakdown products is dissolved in enough water, and the part of precipitating is formed in 1h
For unbroken sludge, the interior part for forming precipitating 1-12h is that level-one is crushed sludge, and the interior part for forming precipitating 12h-24h is two
The broken sludge of grade, the unprecipitated part of fashion is sufficiently broken sludge for 24 hours；The level-one is crushed sludge and is transported to anaerobic zone progress
It handles again, the two-stage crushing sludge is transported to anoxic zone and is handled again, and the sufficiently broken sludge is transported to aerobic
Area is handled again.
S5: supernatant and sludge are obtained in sedimentation basin again.
Embodiment 4
S1: 1000kg sanitary sewage is delivered to anaerobic pond and carries out Anaerobic Treatment, sewage is 2 in the residence time of anaerobic pond
Hour；The sewage transport being discharged from anaerobic pond to dissolved oxygen pond carries out Aerobic biological process, and the dissolved oxygen amount control in pond is existed
0.5-1.0mg/l, residence time of the sewage in dissolved oxygen pond is 4 hours；The sewage transport being discharged from dissolved oxygen pond is into anoxic pond
Denitrogenation dephosphorizing processing is carried out, sewage is 2 hours in the residence time of anoxic pond；The sewage transport being discharged from anoxic pond is to aerobic
Aerobic biological process is carried out in pond, the dissolved oxygen amount control in pond is controlled in 2-4mg/l, pH in 5.5-5.8, sewage is in aerobic tank
In residence time be 5 hours.
S2: the sewage transport being discharged from aerobic tank to sedimentation basin precipitates 3 hours, obtains supernatant and pending mud.
S3: being delivered to broken pond for precipitating sludge, then, according to the w/v of pending mud and sludge crushing liquid
(kg/l) sludge crushing liquid is added for 20:1, obtains sludge solutions, sludge solutions is reacted under agitation 1 hour.It is described
In sludge crushing liquid, the concentration of EDTA- disodium is 0.04mol/l, and the concentration of hydrogen peroxide is 5mmol/l.
S4: screening breakdown products, the breakdown products is dissolved in enough water, and the part of precipitating is formed in 1h
For unbroken sludge, the interior part for forming precipitating 1-12h is that level-one is crushed sludge, and the interior part for forming precipitating 12h-24h is two
The broken sludge of grade, the unprecipitated part of fashion is sufficiently broken sludge for 24 hours；The level-one is crushed sludge and is transported to anaerobic zone progress
It handles again, the two-stage crushing sludge is transported to anoxic zone and is handled again, and the sufficiently broken sludge is transported to aerobic
Area is handled again.
S5: supernatant and sludge are obtained in sedimentation basin again.
Embodiment 5
S1: 1000kg sanitary sewage is delivered to anaerobic pond and carries out Anaerobic Treatment, sewage is 6 in the residence time of anaerobic pond
Hour；The sewage transport being discharged from anaerobic pond to dissolved oxygen pond carries out Aerobic biological process, and the dissolved oxygen amount control in pond is existed
0.5-1.0mg/l, residence time of the sewage in dissolved oxygen pond is 8 hours；The sewage transport being discharged from dissolved oxygen pond is into anoxic pond
Denitrogenation dephosphorizing processing is carried out, sewage is 6 hours in the residence time of anoxic pond；The sewage transport being discharged from anoxic pond is to aerobic
Aerobic biological process is carried out in pond, the dissolved oxygen amount control in pond is controlled in 2-4mg/l, pH in 5.5-5.8, sewage is in aerobic tank
In residence time be 10 hours.
S2: the sewage transport being discharged from aerobic tank to sedimentation basin precipitates 8 hours, obtains supernatant and pending mud.
S3: being delivered to broken pond for precipitating sludge, then, according to the w/v of pending mud and sludge crushing liquid
(kg/l) sludge crushing liquid is added for 10:5, obtains sludge solutions, sludge solutions is reacted under agitation 8 hours.It is described
In sludge crushing liquid, the concentration of EDTA- disodium is 0.25mol/l, and the concentration of hydrogen peroxide is 100mmol/l.
S4: screening breakdown products, the breakdown products is dissolved in enough water, and the part of precipitating is formed in 1h
For unbroken sludge, the interior part for forming precipitating 1-12h is that level-one is crushed sludge, and the interior part for forming precipitating 12h-24h is two
The broken sludge of grade, the unprecipitated part of fashion is sufficiently broken sludge for 24 hours；The level-one is crushed sludge and is transported to anaerobic zone progress
It handles again, the two-stage crushing sludge is transported to anoxic zone and is handled again, and the sufficiently broken sludge is transported to aerobic
Area is handled again.
S5: supernatant and sludge are obtained in sedimentation basin again.
Embodiment 6
S1: 1000kg sanitary sewage is delivered to anaerobic pond and carries out Anaerobic Treatment, sewage is 3 in the residence time of anaerobic pond
Hour；The sewage transport being discharged from anaerobic pond to dissolved oxygen pond carries out Aerobic biological process, and the dissolved oxygen amount control in pond is existed
0.5-1.0mg/l, residence time of the sewage in dissolved oxygen pond is 5 hours；The sewage transport being discharged from dissolved oxygen pond is into anoxic pond
Denitrogenation dephosphorizing processing is carried out, sewage is 3 hours in the residence time of anoxic pond；The sewage transport being discharged from anoxic pond is to aerobic
Aerobic biological process is carried out in pond, the dissolved oxygen amount control in pond is controlled in 2-4mg/l, pH in 5.5-5.8, sewage is in aerobic tank
In residence time be 8 hours.
S2: the sewage transport being discharged from aerobic tank to sedimentation basin precipitates 5 hours, obtains supernatant and pending mud.
S3: being delivered to broken pond for precipitating sludge, then, according to the w/v of pending mud and sludge crushing liquid
(kg/l) sludge crushing liquid is added for 20:1-10:5, obtains sludge solutions, sludge solutions is reacted under agitation 5 hours.
In the sludge crushing liquid, the concentration of EDTA- disodium is 0.05mol/l, and the concentration of hydrogen peroxide is 50mmol/l.
S4: screening breakdown products, the breakdown products is dissolved in enough water, and the part of precipitating is formed in 1h
For unbroken sludge, the interior part for forming precipitating 1-12h is that level-one is crushed sludge, and the interior part for forming precipitating 12h-24h is two
The broken sludge of grade, the unprecipitated part of fashion is sufficiently broken sludge for 24 hours；The level-one is crushed sludge and is transported to anaerobic zone progress
It handles again, the two-stage crushing sludge is transported to anoxic zone and is handled again, and the sufficiently broken sludge is transported to aerobic
Area is handled again.
S5: supernatant and sludge are obtained in sedimentation basin again.
Comparative example 1
S1: 1000kg sanitary sewage is delivered to anaerobic pond and carries out Anaerobic Treatment, sewage is 2 in the residence time of anaerobic pond
Hour；Denitrogenation dephosphorizing processing is carried out into anoxic pond from the sewage transport being discharged in anaerobic pond, sewage is in the stop of anoxic pond
Between be 2 hours；Aerobic biological process is carried out into aerobic tank from the sewage transport being discharged in anoxic pond, by the dissolved oxygen amount control in pond
System is controlled in 2-4mg/l, pH in 5.5-5.8, and residence time of the sewage in aerobic tank is 5 hours.
S2: the sewage transport being discharged from aerobic tank to sedimentation basin precipitates 3 hours, obtains supernatant and sludge.
Comparative example 2
S1: 1000kg sanitary sewage is delivered to anaerobic pond and carries out Anaerobic Treatment, sewage is 2 in the residence time of anaerobic pond
Hour；Denitrogenation dephosphorizing processing is carried out into anoxic pond from the sewage transport being discharged in anaerobic pond, sewage is in the stop of anoxic pond
Between be 2 hours；Aerobic biological process is carried out into aerobic tank from the sewage transport being discharged in anoxic pond, by the dissolved oxygen amount control in pond
System is controlled in 2-4mg/l, pH in 5.5-5.8, and residence time of the sewage in aerobic tank is 5 hours.
S2: the sewage transport being discharged from aerobic tank to sedimentation basin precipitates 3 hours, obtains supernatant and pending mud.
S3: pending mud being dissolved in enough water, and the part of precipitating is formed in 1h for unbroken sludge, in 1-12h
The part for forming precipitating is that level-one is crushed sludge, and the part that precipitating is formed in 12h-24h is two-stage crushing sludge, for 24 hours when not yet
The part of precipitating is sufficiently broken sludge；The broken sludge of the level-one is transported to anaerobic zone and is handled again, and the second level is broken
Broken sludge is transported to anoxic zone and is handled again, and the sufficiently broken sludge is transported to aerobic zone and is handled again.
S4: supernatant and sludge are obtained in sedimentation basin again.
Comparative example 3
S1: 1000kg sanitary sewage is delivered to anaerobic pond and carries out Anaerobic Treatment, sewage is 2 in the residence time of anaerobic pond
Hour；Denitrogenation dephosphorizing processing is carried out into anoxic pond from the sewage transport being discharged in anaerobic pond, sewage is in the stop of anoxic pond
Between be 2 hours；Aerobic biological process is carried out into aerobic tank from the sewage transport being discharged in anoxic pond, by the dissolved oxygen amount control in pond
System is controlled in 2-4mg/l, pH in 5.5-5.8, and residence time of the sewage in aerobic tank is 5 hours.
S2: the sewage transport being discharged from aerobic tank to sedimentation basin precipitates 3 hours, obtains supernatant and pending mud.
S3: being delivered to broken pond for precipitating sludge, then, according to the w/v of pending mud and sludge crushing liquid
(kg/l) sludge crushing liquid is added for 20:1, obtains sludge solutions, sludge solutions is reacted under agitation 1 hour.It is described
In sludge crushing liquid, the concentration of boron oxide is 0.05mol/l, and the concentration of glycerine is 50mmol/l.
S4: screening breakdown products, the breakdown products is dissolved in enough water, and the part of precipitating is formed in 1h
For unbroken sludge, the interior part for forming precipitating 1-12h is that level-one is crushed sludge, and the interior part for forming precipitating 12h-24h is two
The broken sludge of grade, the unprecipitated part of fashion is sufficiently broken sludge for 24 hours；The level-one is crushed sludge and is transported to anaerobic zone progress
It handles again, the two-stage crushing sludge is transported to anoxic zone and is handled again, and the sufficiently broken sludge is transported to aerobic
Area is handled again.
S5: supernatant and sludge are obtained in sedimentation basin again.
Comparative example 4
S1: 1000kg sanitary sewage is delivered to anaerobic pond and carries out Anaerobic Treatment, sewage is 2 in the residence time of anaerobic pond
Hour；Denitrogenation dephosphorizing processing is carried out into anoxic pond from the sewage transport being discharged in anaerobic pond, sewage is in the stop of anoxic pond
Between be 2 hours；Aerobic biological process is carried out into aerobic tank from the sewage transport being discharged in anoxic pond, by the dissolved oxygen amount control in pond
System is controlled in 2-4mg/l, pH in 5.5-5.8, and residence time of the sewage in aerobic tank is 5 hours.
S2: the sewage transport being discharged from aerobic tank to sedimentation basin precipitates 3 hours, obtains supernatant and pending mud.
S3: being delivered to broken pond for precipitating sludge, then, according to the w/v of pending mud and sludge crushing liquid
(kg/l) sludge crushing liquid is added for 20:1, obtains sludge solutions, sludge solutions is reacted under agitation 1 hour.It is described
In sludge crushing liquid, the concentration of EDTA- chelated iron is 0.05mol/l.
S4: screening breakdown products, the breakdown products is dissolved in enough water, and the part of precipitating is formed in 1h
For unbroken sludge, the interior part for forming precipitating 1-12h is that level-one is crushed sludge, and the interior part for forming precipitating 12h-24h is two
The broken sludge of grade, the unprecipitated part of fashion is sufficiently broken sludge for 24 hours；The level-one is crushed sludge and is transported to anaerobic zone progress
It handles again, the two-stage crushing sludge is transported to anoxic zone and is handled again, and the sufficiently broken sludge is transported to aerobic
Area is handled again.
S5: supernatant and sludge are obtained in sedimentation basin again.
It should be pointed out that the property of can refer in order to guarantee experimental data, used in above-described embodiment 1-6, comparative example 1-4
Sanitary sewage is isolated from same a collection of sanitary sewage.
Embodiment 7
To embodiment 1-6, the supernatant that comparative example 1-4 is finally obtained carries out water quality monitoring, and monitoring result is as shown in table 3.
Table 3
| Group | COD | BOD5 | SS (suspended matter) |
| Embodiment 1 | 22.6mg/l | 13.4mg/l | 0.02mg/l |
| Embodiment 2 | 23.5mg/l | 12.1mg/l | 0.03mg/l |
| Embodiment 3 | 20.8mg/l | 13.8mg/l | 0.02mg/l |
| Embodiment 4 | 19.6mg/l | 12.8mg/l | 0.02mg/l |
| Embodiment 5 | 20.2mg/l | 14.0mg/l | 0.03mg/l |
| Embodiment 6 | 18.9mg/l | 13.1mg/l | 0.01mg/l |
According to 3 data of table it is found that in embodiment 1-6, sanitary sewage after treatment, COD, BOD5, SS qualified,
Prove that method of the invention can be by most of pollutant removal in sewage.
Embodiment 8
To embodiment 1-6, the precipitating that comparative example 1-4 is finally obtained carries out sludge quality detection, monitoring result such as 4 institute of table
Show.
Table 4
| Group | Sludge quality (kg) |
| Embodiment 1 | 2.0 |
| Embodiment 2 | 2.1 |
| Embodiment 3 | 2.0 |
| Embodiment 4 | 1.8 |
| Embodiment 5 | 1.9 |
| Embodiment 6 | 1.9 |
| Comparative example 1 | 5.6 |
| Comparative example 2 | 4.8 |
| Comparative example 3 | 2.5 |
| Comparative example 4 | 3.1 |
According to 4 data of table it is found that sewage water treatment method provided in the present invention, (compares compared to without sludge crushing
Example 1), sludge without broken secondary treatment (comparative example 2), sludge content significantly reduces, and is crushed sludge compared to other
Method, the sludge quantity that obtains also significantly reduces in the present invention.
Embodiment 9
According to Fig. 1, Fig. 3-6, the present invention provides a kind of sewage disposal system, the sewage disposal system includes life
Object reaction tank 1, sedimentation basin 2, broken pond 3, screening pond 4, the biological reaction pool 1 are connect by pipeline with sedimentation basin 2, described heavy
Shallow lake pond 2 is connect by pipeline with broken pond 3, and the broken pond 3 is connect by pipeline with screening pond, and the screening pond 4 passes through back
Flow tube road 5 is connect with biological reaction pool.
Wherein, the biological reaction pool 1 successively includes anaerobic zone 11, anoxic zone 12, aerobic zone 13.
Be provided with floating zone 41, decanting zone 42 in the screening pond 4, the floating zone 41, decanting zone 42 junction set
It is equipped with isolating device 43, the isolating device 43 is connected with isolating device control device 44.
Sieved pond 4 is connected with anaerobic zone 11, anoxic zone 12, aerobic zone 13 by reflux line 5 respectively, the reflux
Valve 51 is provided on pipeline 5.
Deaerating plant 52 is provided in the reflux line 5, the deaerating plant 52 includes several deoxygenation components 521,
The deoxygenation component 521 includes deoxygenation sieve 5211, the first speed limit plate 5212, the second speed limit plate 5213.
The interval of deoxygenation component 521 setting, and every group of distance member spacing is in 10cm.The first speed limit plate 5212,
Second speed limit plate 5213 is arranged alternately, and in liquid flows to direction angle, this angle are 120 ° in obtuse angle with tube body.
Embodiment 10
According to fig. 2 shown in -6, the present invention provides a kind of sewage disposal system, the sewage disposal system includes that biology is anti-
Pond 1, sedimentation basin 2, broken pond 3, screening pond 4 are answered, the biological reaction pool 1 is connect by pipeline with sedimentation basin 2, the sedimentation basin
2 are connect by pipeline with broken pond 3, and the broken pond 3 is connect by pipeline with screening pond, and the screening pond 4 passes through return pipe
Road 5 is connect with biological reaction pool.
Wherein, the biological reaction pool 1 successively include pretreating zone 15, it is anaerobic zone 11, dissolved oxygen area 14, anoxic zone 12, good
Oxygen area 13.
Be provided with floating zone 41, decanting zone 42 in the screening pond 4, the floating zone 41, decanting zone 42 junction set
It is equipped with isolating device 43, the isolating device 43 is connected with isolating device control device 44.
Sieved pond 4 is connected with anaerobic zone 11, anoxic zone 12, aerobic zone 13 by reflux line 5 respectively, the reflux
Valve 51 is provided on pipeline 5.
Deaerating plant 52 is provided in the reflux line 5, the deaerating plant 52 includes several deoxygenation components 521,
The deoxygenation component 521 includes deoxygenation sieve 5211, the first speed limit plate 5212, the second speed limit plate 5213.
The interval of deoxygenation component 521 setting, and every group of distance member spacing is in 10cm.The first speed limit plate 5212,
Second speed limit plate 5213 is arranged alternately, and in liquid flows to direction angle, this angle are 120 ° in obtuse angle with tube body.Described first
Speed limit plate 5212 is connected with 5211 one end of deoxygenation sieve.
Embodiment 11
The preparation of deoxidizing compositions.
(1) 600g sponge iron is ground, and sieved with 100 mesh sieve spare；60g bauxite and 1g silver are ground, and cross 160 meshes
It is spare；
(2) sponge iron after step (1) grinding is mixed by mass volume ratio (g/ml) 1:4 with deionized water；Then exist
Bauxite and silver after adding step (1) grinding under stirring, stir evenly acquisition slurry；
(3) by slurry made from step (2) in 550 DEG C of starvation preroast 0.2h, then 800 DEG C of starvations are warming up to
0.5h is roasted, cooled to room temperature is to get deoxidizing compositions.
Embodiment 12
The preparation of deoxidizing compositions.
(1) 800g sponge iron is ground, and sieved with 100 mesh sieve spare；80g bauxite and 2g silver are ground, and cross 160 meshes
It is spare；
(2) sponge iron after step (1) grinding is mixed by mass volume ratio (g/ml) 1:1 with deionized water；Then exist
Bauxite and silver after adding step (1) grinding under stirring, stir evenly acquisition slurry；
(3) by slurry made from step (2) in 650 DEG C of starvation preroast 2h, then 1100 DEG C of starvations are warming up to
4h is roasted, cooled to room temperature is to get deoxidizing compositions.
Embodiment 13
The preparation of deoxidizing compositions.
(1) 700g sponge iron is ground, and sieved with 100 mesh sieve spare；70g bauxite and 1.5g silver are ground, and cross 160 mesh
It sieves spare；
(2) sponge iron after step (1) grinding is mixed by mass volume ratio (g/ml) 1:2 with deionized water；Then exist
Bauxite and silver after adding step (1) grinding under stirring, stir evenly acquisition slurry；
(3) by slurry made from step (2) in 600 DEG C of starvation preroast 1h, then 1000 DEG C of starvations are warming up to
2h is roasted, cooled to room temperature is to get deoxidizing compositions.
Embodiment 14
The preparation of deoxidizing compositions.
(1) 600g sponge iron is ground, and sieved with 100 mesh sieve spare；60g bauxite and 1g silver are ground, and cross 160 meshes
It is spare；
(2) by 4g salicylic acid, 2g citric acid, 2g oxalic acid, in proportion mix after, with deionized water press mass volume ratio (g/
Ml) 1:1 is mixed, and obtains synergy solution, and the sponge iron after step (1) grinding is added in above-mentioned synergy solution；Then it is stirring
Bauxite, silver and the 4g calcium carbonate after being separately added into step (1) grinding under state are mixed, acquisition slurry is stirred evenly.
(3) slurry made from step (2) is covered in 550 DEG C of starvation preroast 0.2h, then is warming up to 800 DEG C of isolations
Oxygen roasts 0.5h, and cooled to room temperature is to get deoxidizing compositions.
Embodiment 15
The preparation of deoxidizing compositions.
(1) 800g sponge iron is ground, and sieved with 100 mesh sieve spare；80g bauxite and 2g silver are ground, and cross 160 meshes
It is spare；
(2) by 8g salicylic acid, 4g citric acid, 4g oxalic acid, in proportion mix after, with deionized water press mass volume ratio (g/
Ml) 1:1 is mixed, and obtains synergy solution, and the sponge iron after step (1) grinding is added in above-mentioned synergy solution；Then it is stirring
Bauxite, silver and the 8g calcium carbonate after being separately added into step (1) grinding under state are mixed, acquisition slurry is stirred evenly.
(3) slurry made from step (2) is covered on deoxygenation sieve, the first speed limit plate or the second speed limit plate, in 650 DEG C
Starvation preroast 2h, then 1100 DEG C of starvation roasting 4h are warming up to, cooled to room temperature is to get deoxidizing compositions.
Embodiment 16
The preparation of deoxidizing compositions.
(1) 700g sponge iron is ground, and sieved with 100 mesh sieve spare；70g bauxite and 1.5g silver are ground, and cross 160 mesh
It sieves spare；
(2) by 6g salicylic acid, 3g citric acid, 3g oxalic acid, in proportion mix after, with deionized water press mass volume ratio (g/
Ml) 1:1 is mixed, and obtains synergy solution, and the sponge iron after step (1) grinding is added in above-mentioned synergy solution；Then it is stirring
Bauxite, silver and the 6g calcium carbonate after being separately added into step (1) grinding under state are mixed, acquisition slurry is stirred evenly.
(3) slurry made from step (2) is covered in deoxygenation sieve 5211, the first speed limit plate 5212 or the second speed limit plate
On 5213, in 600 DEG C of starvation preroast 1h, then 1000 DEG C of starvation roasting 2h are warming up to, cooled to room temperature, i.e.,
Obtain deoxidizing compositions.
Embodiment 17
Deoxygenation experiment is carried out to embodiment 11-16 and sponge iron, steps are as follows:
(1) 100g sample to be tested is taken to be placed in 500ml flask；
(2) deionized water of dissolved oxygen concentration 2mg/l is added, is settled to 500ml；
(3) 1h is stood, solution oxygen concentration is detected.
Above-mentioned experiment is repeated 5 times, and takes the average value of 5 experiments, experimental result is as shown in table 5.
Table 5
| Group | 0min(μg/ml) | 60min(μg/ml) |
| Embodiment 11 | 2010±8 | 835±12 |
| Embodiment 12 | 2002±10 | 831±19 |
| Embodiment 13 | 1988±15 | 880±10 |
| Embodiment 14 | 1997±7 | 540±12 |
| Embodiment 15 | 1997±11 | 544±14 |
| Embodiment 16 | 2010±9 | 550±10 |
| Sponge iron | 1996±4 | 1110±18 |
According to the result of table 5 it is found that the deoxidizing compositions prepared using method in the present invention, deaerating effect are substantially better than
Sponge iron；And wherein, using (embodiment 14-16) after synergist, deaerating effect significantly increases again.
Embodiment 18
The preparation of deaerating plant 52.
(1) 600g sponge iron is ground, and sieved with 100 mesh sieve spare；60g bauxite and 1g silver are ground, and cross 160 meshes
It is spare；
(2) by 4g salicylic acid, 2g citric acid, 2g oxalic acid, in proportion mix after, with deionized water press mass volume ratio (g/
Ml) 1:1 is mixed, and obtains synergy solution, and the sponge iron after step (1) grinding is added in above-mentioned synergy solution；Then it is stirring
Bauxite, silver and the 4g calcium carbonate after being separately added into step (1) grinding under state are mixed, acquisition slurry is stirred evenly.
(3) slurry made from step (2) is covered in deoxygenation sieve 5211, the first speed limit plate 5212 or the second speed limit plate
On 5213, in 550 DEG C of starvation preroast 0.2h, then 800 DEG C of starvation roasting 0.5h is warming up to, naturally cools to room
Temperature to get.
By diameter for above-mentioned deaerating plant 52 is arranged in the reflux line 5 of 30cm, the interval of deoxygenation component 521 is arranged,
And every group of compartment is away from 10cm.The first speed limit plate 5212, the second speed limit plate 5213 are arranged alternately, and in liquid flow direction side
To angle, this angle are 100 ° in obtuse angle with tube body.The first speed limit plate 5212 is connected with 5211 one end of deoxygenation sieve.
Embodiment 19
The preparation of deaerating plant 52.
(1) 800g sponge iron is ground, and sieved with 100 mesh sieve spare；80g bauxite and 2g silver are ground, and cross 160 meshes
It is spare；
(2) by 8g salicylic acid, 4g citric acid, 4g oxalic acid, in proportion mix after, with deionized water press mass volume ratio (g/
Ml) 1:1 is mixed, and obtains synergy solution, and the sponge iron after step (1) grinding is added in above-mentioned synergy solution；Then it is stirring
Bauxite, silver and the 8g calcium carbonate after being separately added into step (1) grinding under state are mixed, acquisition slurry is stirred evenly.
(3) slurry made from step (2) is covered in deoxygenation sieve 5211, the first speed limit plate 5212 or the second speed limit plate
On 5213, in 650 DEG C of starvation preroast 2h, then 1100 DEG C of starvation roasting 4h are warming up to, cooled to room temperature, i.e.,
?.
By diameter for above-mentioned deaerating plant 52 is arranged in the reflux line 5 of 30cm, the interval of deoxygenation component 521 is arranged,
And every group of compartment is away from 30cm.The first speed limit plate 5212, the second speed limit plate 5213 are arranged alternately, and in liquid flow direction side
To angle, this angle are 150 ° in obtuse angle with tube body.The first speed limit plate 5212 is connected with 5211 one end of deoxygenation sieve.
Embodiment 20
The preparation of deaerating plant 52.
(1) 700g sponge iron is ground, and sieved with 100 mesh sieve spare；70g bauxite and 1.5g silver are ground, and cross 160 mesh
It sieves spare；
(2) by 6g salicylic acid, 3g citric acid, 3g oxalic acid, in proportion mix after, with deionized water press mass volume ratio (g/
Ml) 1:1 is mixed, and obtains synergy solution, and the sponge iron after step (1) grinding is added in above-mentioned synergy solution；Then it is stirring
Bauxite, silver and the 6g calcium carbonate after being separately added into step (1) grinding under state are mixed, acquisition slurry is stirred evenly.
(3) slurry made from step (2) is covered on deoxygenation sieve, the first speed limit plate or the second speed limit plate, in 600 DEG C
Starvation preroast 1h, then be warming up to 1000 DEG C of starvations roasting 2h, cooled to room temperature to get.
By diameter for above-mentioned deaerating plant 52 is arranged in the reflux line 5 of 30cm, the interval of deoxygenation component 521 is arranged,
And every group of compartment is away from 20cm.The first speed limit plate 5212, the second speed limit plate 5213 are arranged alternately, and in liquid flow direction side
To angle, this angle are 120 ° in obtuse angle with tube body.The first speed limit plate 5212 is connected with 5211 one end of deoxygenation sieve.
Comparative example 5
By diameter for filter device is arranged in the reflux line 5 of 30cm, the filter device interval is arranged, and every group of interval
Spacing is in 10cm.The filter device includes the first speed limit plate, the second speed limit plate, sieve.The first speed limit plate, the second speed limit
Plate is arranged alternately, and in liquid flows to direction angle, this angle are 100 ° in obtuse angle with tube body.The first speed limit plate and sieve
One end is connected.
Comparative example 6
By diameter for filter device is arranged in the reflux line 5 of 30cm, the filter device interval is arranged, and every group of interval
Spacing is in 30cm.The filter device includes the first speed limit plate, the second speed limit plate, sieve.The first speed limit plate, the second speed limit
Plate is arranged alternately, and in liquid flows to direction angle, this angle are 150 ° in obtuse angle with tube body.The first speed limit plate and sieve
One end is connected.
Comparative example 7
By diameter for filter device is arranged in the reflux line 5 of 30cm, the filter device interval is arranged, and every group of interval
Spacing is in 20cm.The filter device includes the first speed limit plate, the second speed limit plate, sieve.The first speed limit plate, the second speed limit
Plate is arranged alternately, and in liquid flows to direction angle, this angle are 120 ° in obtuse angle with tube body.The first speed limit plate and sieve
One end is connected.
Embodiment 21
Reflux line 1m in Example 18-20, comparative example 5-7, with 0.0015m3The speed of/s is by dissolved oxygen concentration
The deionized water of 1mg/l measures the dissolved oxygen concentration in deionized water after pipeline by pipeline, tests parallel progress 5
It is secondary, it is averaged, experimental result is as shown in table 6.
Table 6
| Group | Entrance (μ g/ml) | Pipe outlet (μ g/ml) |
| Embodiment 18 | 1004±5 | 838±12 |
| Embodiment 19 | 996±5 | 855±13 |
| Embodiment 20 | 997±2 | 820±18 |
| Comparative example 5 | 1000±2 | 1002±5 |
| Comparative example 6 | 1001±5 | 988±12 |
| Comparative example 7 | 1003±2 | 991±8 |
According to 6 result of table it is found that oxygen-containing deionized water is after provided reflux line through the invention, compared to inside
It is not provided with the pipeline of deoxidizing compositions, the dissolved oxygen content in deionized water is significantly reduced (p < 0.01), this card
Bright, reflux line prepared by the present invention can be effectively reduced the oxygen content in reflux sewage, maintain anoxic to the full extent
The stability of strain in pond, anaerobic pond.
It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, may be used also
With several improvements and modifications are made to the present invention, these improvements and modifications also fall within the scope of protection of the claims of the present invention.
Claims (10)
1. a kind of sewage water treatment method, includes the following steps:
S1: sewage is passed through biological reaction pool and is handled；
S2: the sewage that acquisition is handled in S1 is precipitated, and obtains supernatant and pending mud；
S3: pending mud is crushed；
S4: screening breakdown products, and is transmitted back to biological reaction pool and is handled again.
2. sewage water treatment method according to claim 1, it is characterised in that: the biological reaction pool includes anaerobic zone, lacks
Oxygen area, aerobic zone, and the sewage passes sequentially through anaerobic zone, anoxic zone, aerobic zone.
3. sewage water treatment method according to claim 2, it is characterised in that: the biological reaction pool further includes dissolved oxygen area,
The sewage passes sequentially through anaerobic zone, dissolved oxygen area, anoxic zone, aerobic zone.
4. sewage water treatment method according to claim 1, it is characterised in that: the breaking method of the pending mud includes
Following steps:
S301: pending mud is dissolved in sludge crushing liquid, obtains sludge solutions；
S302: sludge solutions are reacted under agitation 1-8 hours；
Wherein, the sludge crushing liquid includes sludge crushing agent.
5. sewage water treatment method according to claim 4, it is characterised in that: the sludge crushing agent include hydrogen peroxide,
EDTA- disodium.
6. sewage water treatment method according to claim 5, it is characterised in that: in the sludge crushing liquid, EDTA- disodium
Concentration is 0.04-0.25mol/l, and the concentration of hydrogen peroxide is 5-100mmol/l.
7. sewage water treatment method according to claim 1, it is characterised in that: described the step of being screened to breakdown products
The breakdown products to be dissolved in enough water, the part for forming precipitating in 1h is unbroken sludge, and it is heavy to be formed in 1-12h
The part in shallow lake is that level-one is crushed sludge, and the part that precipitating is formed in 12h-24h is two-stage crushing sludge, and fashion is unprecipitated for 24 hours
Part is sufficiently broken sludge；The broken sludge of the level-one is transported to anaerobic zone and is handled again, the two-stage crushing sludge
It is transported to anoxic zone to be handled again, the sufficiently broken sludge is transported to aerobic zone and is handled again.
8. a kind of sewage disposal system of application sewage water treatment method as described in claim 1-7 is any, the sewage treatment
System includes biological reaction pool, settling zone, fracture area, screening area, and the biological reaction pool is connect by pipeline with settling zone, institute
It states settling zone to connect by pipeline with fracture area, by pipeline and sieve piecewise connection, the screening area passes through in the fracture area pond
Reflux line is connect with biological reaction pool.
9. sewage disposal system according to claim 8, it is characterised in that: the biological reaction pool successively includes anaerobism
Area, anoxic zone, aerobic zone.
10. sewage disposal system according to claim 8, it is characterised in that: be provided with deoxygenation dress in the reflux line
It sets.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110902980A (en) * | 2019-12-27 | 2020-03-24 | 安徽普氏生态环境工程有限公司 | Integrated sewage treatment system |
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| JP2007021285A (en) * | 2005-07-12 | 2007-02-01 | Mitsubishi Rayon Eng Co Ltd | Method and apparatus for reducing volume of excess sludge |
| CN102583937A (en) * | 2012-01-16 | 2012-07-18 | 宁波工程学院 | Novel sewage treatment process utilizing ferrate oxidization to reduce sludge quantity |
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