CN108002649A - Mobile detachable citric acid cleaning wastewater treatment equipment and wastewater treatment method - Google Patents
Mobile detachable citric acid cleaning wastewater treatment equipment and wastewater treatment method Download PDFInfo
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- CN108002649A CN108002649A CN201711245449.4A CN201711245449A CN108002649A CN 108002649 A CN108002649 A CN 108002649A CN 201711245449 A CN201711245449 A CN 201711245449A CN 108002649 A CN108002649 A CN 108002649A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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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- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The present invention relates to the mobile detachable citric acid cleaning wastewater treatment equipment of one kind, including wastewater storage tank, the temporary transient storage for waste water；Wastewater storage tank is followed by pretreatment pool, for removing high content iron ion, ammonia nitrogen removal, adjusting pH, removal part COD；Pretreatment pool is followed by biochemical treatment tank, for further strengthening the removal of ammonia nitrogen, COD.The present invention also provides a kind of wastewater treatment method using the detachable citric acid cleaning wastewater treatment equipment of above-mentioned movement.The beneficial effects of the present invention are：The portable detachable processing unit of citric acid cleaning waste water is to be focused on citric acid chemical rinsing waste water, has the advantages that equipment is flexible, treating capacity is variable, high treating effect, convenient transport.
Description
Technical field
The present invention relates to cleaning wastewater processing technology, more particularly to a kind of mobile detachable citric acid cleaning wastewater treatment
Device and wastewater treatment method.
Background technology
Citric acid is used for cleaning agent, wide because its cleaning performance is good and the advantages such as cost is relatively low, non-toxic, corrosivity is low
It is general to be applied to industry cleaning link.Citric acid cleaning waste water acidity is stronger, pH in 3~5 scopes, total weight of iron concentration 1000~
3000mg/L, for ammonia nitrogen in 1000~2000mg/L, chemical oxygen demand cod is difficult to deal with clear in 10000~30000mg/L
Wash one of waste water.
Chemical cleaning has stage, is usually one-shot job, and general chemical enterprise cleans once for 1 year, thermal power plant
Cleaning in usual 5~6 years is once.Therefore, chemical rinsing waste water does not have special processing equipment, and usually processing is that waste water is discharged into factory
The original waste water disposal facility in area, but often since cleaning waste component complexity causes damage treatment facility and operation.To clear
It is not deep to wash waste water harm understanding, managerial confusion is to cause the cleaning undesirable one of the main reasons of wastewater treatment.
Because citric acid chemical rinsing waste water water changes, volume needed for sewage treatment equipment also changes with it, if scene is single
Solely structure pond body, can cause each chemical cleaning that a waste water cleaning equipment is built on-site, and cause the wasting of resources and cleaning cost
Improve.
Therefore, how convenient, fast, the effective processing for carrying out citric acid cleaning waste water is those skilled in the art's needs
The technical problem underlying of solution.
The content of the invention
The technical problems to be solved by the invention are：A kind of mobile detachable citric acid cleaning wastewater treatment equipment is provided
And wastewater treatment method, have the advantages that equipment is flexible, treating capacity is variable, high treating effect, convenient transport, can be according to live clear
Wastewater volume is washed, is assembled into the sewage treatment equipment of corresponding volume, according to field condition, day output can be adjusted arbitrarily,
Whole wastewater to reach standard processing discharges are completed in scheduled time.
The present invention is to solve the problems, such as that used technical solution set forth above is：
The mobile detachable citric acid cleaning wastewater treatment equipment of one kind, including wastewater storage tank 1, the temporary transient storage for waste water；
Wastewater storage tank 1 is followed by pretreatment pool, for removing high content iron ion, ammonia nitrogen removal, adjusting pH, removal part COD；Pretreatment pool
Biochemical treatment tank is followed by, for further strengthening the removal of ammonia nitrogen, COD.
The pretreatment pool includes pond body, roots blower 17, chemicals dosing plant A18 and chemicals dosing plant B19, is set in pond body
There are two partition plates, pond body inner cavity is divided into ammonia-nitrogen desorption pond 3 independent toward each other, primary clarifier 6, pH regulating reservoirs by partition plate
7, aeration tube A4 is provided with ammonia-nitrogen desorption pond 3, and aeration tube A4 is connected with the gas outlet of roots blower 17, primary clarifier 6
Downflow weir A5 is inside provided with, ammonia-nitrogen desorption pond 3, primary clarifier 6 and pH regulating reservoirs 7 are both provided with water outlet and water inlet, give up
Water storage tank 1 is connected by pipeline with the water inlet in ammonia-nitrogen desorption pond 3, on the pipeline between wastewater storage tank 1 and ammonia-nitrogen desorption pond 3
Be provided with raw water pump 2, the water outlet in ammonia-nitrogen desorption pond 3 is connected with the import of downflow weir A5, the water outlet of primary clarifier 6 with
The water inlet of pH regulating reservoirs 7 is connected, and chemicals dosing plant A18 is connected by chemical feed pipe with ammonia-nitrogen desorption pond 3, chemicals dosing plant B19
It is connected by chemical feed pipe with pH regulating reservoirs 7, the bottom of primary clarifier 6 is provided with sludge outlet 20, and collection removes high content iron
Ion, ammonia nitrogen removal, adjust pH, remove the functions such as part COD in the integrated approach unit of one.
The biochemical treatment tank includes pond body, and two partition plates are provided with pond body, and pond body inner cavity is divided into that by partition plate
This relatively independent hydrolysis acidification pool 8, aerobic tank 10 and second-level settling pond 12, are provided with semi-soft suspension in hydrolysis acidification pool 8
Filler 9, soft floating stuffing 11 and aeration tube B15, the gas outlet of aeration tube B15 and roots blower 17 are provided with aerobic tank 10
It is connected, downflow weir B16 and slush pump 13 is provided with second-level settling pond 12, slush pump 13 is located at the interior bottom of second-level settling pond 12
Portion, the outlet of slush pump 13 are connected by mud return line 14 with aerobic tank 10, hydrolysis acidification pool 8, aerobic tank 10 and two level
Sedimentation basin 12 is both provided with water outlet and water inlet, and the water inlet of hydrolysis acidification pool 8 passes through pipeline and the water outlet of pH regulating reservoirs 7
It is connected, the water outlet of hydrolysis acidification pool 8 is connected with the water inlet of aerobic tank 10, the water outlet and downflow weir of aerobic tank 10
The import of B16 is connected, and the water outlet of second-level settling pond 12 is water purification outlet, further strengthens the removal of ammonia nitrogen, COD, with full
Sufficient wastewater treatment index.
Correspondingly, the present invention also provides a kind of using the useless of the detachable citric acid cleaning wastewater treatment equipment of above-mentioned movement
Method for treating water, includes the following steps：
a）By in citric acid cleaning wastewater collection to wastewater storage tank 1；
b）Citric acid cleaning waste water pending in wastewater storage tank 1 is flowed into pretreatment pool, the iron ion of high concentration is reduced, takes off
Ammonia nitrogen, adjust pH, remove part COD；
c）Pretreated waste water is flowed into biochemical treatment tank, further strengthens the removal of ammonia nitrogen, COD.
Preferably, the step b）Specially：Citric acid cleaning waste water pending in wastewater storage tank 1 is flowed into ammonia nitrogen to blow
De- pond 3, the pH value of original cleaning waste water is relatively low, and contains substantial amounts of ferric ion and ammonia nitrogen, by chemicals dosing plant A to ammonia nitrogen
In stripping pond 3 plus lye (sodium hydroxide) adjusts wastewater pH and adds calcium oxide into ammonia-nitrogen desorption pond 3 to 9, then by chemicals dosing plant A
PH to more than 11 is adjusted, citric acid can generate calcium citrate not soluble in water, while iron ion and hydroxyl with calcium ion reaction
Ferric hydroxide precipitate is generated, the stripping of generation and ammonia nitrogen beneficial to ferric hydroxide precipitate, reduces ammonia-nitrogen content in waste water, go iron removaling
Ion, reduces citric acid content, reduces the COD concentration in waste water；Water in ammonia-nitrogen desorption pond 3 after processing flows into primary clarifier
6, using sloping plate deposition, precipitate through being arranged outside sludge outlet 20；Water in primary clarifier 6 after processing flows into pH regulating reservoirs 7, at this
Reason unit major function is to adjust previous step water outlet pH, to meet biochemical treatment condition, is adjusted by chemicals dosing plant B19 to pH
Sulfuric acid solution is added in pond 7, the pH to 8~9 in waste water, sulfate radical and calcium ion generation calcium sulfate is adjusted, reduces calcium in waste water
Ion concentration.
Preferably, the step c）Specially：Water in pH regulating reservoirs 7 after processing flows into hydrolysis acidification pool 8, passes through raising
The biodegradability of waste water, reduces waste water quality and changes impact to subsequent technique, forms denitrification environment, and denitrifying bacteria is by Asia
Nitrate and nitrate transformation are nitrogen；Water in hydrolysis acidification pool 8 after processing flows into aerobic tank 10, and activated sludge process reduces useless
COD and ammonia nitrogen in water, by adjusting the dissolved oxygen content of waste water, using the activity curve of microorganism, according to different activities section,
The outer row's excess sludge of timing, controls sludge reflux, can reach the purpose strengthened and remove pollutant；Water in aerobic tank 10 after processing
Second-level settling pond 12 is flowed into, the water outlet after active sludge treatment is still muddy water mixed solution, and second-level settling pond 12 can make consolidating for waste water
Body suspended matter reduces, so as to achieve the purpose that clarification and effluent, the sludge reflux of generation to aerobic tank 10.
Preferably, step b）In the ammonia-nitrogen desorption pond 3, sodium hydroxide 0.4% is added, calcium oxide 1.2% is used to adjust
The pH of waste water.
Preferably, step b）In the ammonia-nitrogen desorption pond 3, gas-water ratio：1000~2000：1, aeration time：3.5~
4.5h。
Preferably, step b）In the primary clarifier 6, the sedimentation time：1~2h.
Preferably, step c）In the pH regulating reservoirs 7, pH is about 10 or so after stripping precipitation, and processing industry sulfuric acid is adjusted
To 8~9.
Preferably, step b）Hydrolysis acidification pool 8, aerobic tank 10, the biological treatment stage, needs to cultivate before beginning to use
Activated sludge.Biochemical section is by the activated sludge of sewage treatment plant's aerobic tank aqueous 80% according to pool volume（Anaerobism and aerobic total appearance
Product）10% added, open that roots blower is vexed to expose 3~5 days, recover sludge activity, make biochemical section biologic packing material biofilm complete
Into.During normal operation, anoxic section 0.3~0.7mg/L of dissolved oxygen, 4.0~5.0mg/L of aerobic section dissolved oxygen are controlled.
The beneficial effects of the present invention are：The portable detachable processing unit of citric acid cleaning waste water is by citric acid chemistry
Cleaning waste water is focused on, and has the advantages that equipment is flexible, treating capacity is variable, high treating effect, convenient transport.The present invention
The portable detachable processing unit of citric acid cleaning waste water the useless of corresponding volume can be assembled into according to clean-in-place waste water size
Water treatment facilities, according to field condition, day output can be adjusted arbitrarily, and whole wastewater to reach standard processing are completed within the scheduled time
Discharge.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention.
Wherein, 1- wastewater storage tanks, 2- raw water pumps, 3- ammonia-nitrogen desorptions pond, 4- aeration tubes A, 5- downflow weir A, 6- primary precipitation
Pond, 7-pH regulating reservoirs, 8- hydrolysis acidification pools, the semi-soft floating stuffings of 9-, 10- aerobic tanks, the soft floating stuffings of 11-, 12- two levels
Sedimentation basin, 13- slush pumps, 14- mud return lines, 15- aeration tubes B, 16- downflow weir B, 17- roots blower, 18- chemicals dosing plants
A, 19- chemicals dosing plant B, 20- sludge outlet.
Embodiment
The embodiment of the present invention is further illustrated below in conjunction with the accompanying drawings.
With reference to Fig. 1, one kind described in present embodiment moves detachable citric acid cleaning wastewater treatment equipment, bag
Wastewater storage tank 1 is included, the temporary transient storage for waste water；Wastewater storage tank 1 is followed by pretreatment pool, for removing high content iron ion, taking off
Ammonia nitrogen, adjust pH, remove part COD；Pretreatment pool is followed by biochemical treatment tank, for further strengthening the removal of ammonia nitrogen, COD.
The pretreatment pool includes pond body, roots blower 17, chemicals dosing plant A18 and chemicals dosing plant B19, is set in pond body
There are two partition plates, pond body inner cavity is divided into ammonia-nitrogen desorption pond 3 independent toward each other, primary clarifier 6, pH regulating reservoirs by partition plate
7, aeration tube A4 is provided with ammonia-nitrogen desorption pond 3, and aeration tube A4 is connected with the gas outlet of roots blower 17, primary clarifier 6
Downflow weir A5 is inside provided with, ammonia-nitrogen desorption pond 3, primary clarifier 6 and pH regulating reservoirs 7 are both provided with water outlet and water inlet, give up
Water storage tank 1 is connected by pipeline with the water inlet in ammonia-nitrogen desorption pond 3, on the pipeline between wastewater storage tank 1 and ammonia-nitrogen desorption pond 3
Be provided with raw water pump 2, the water outlet in ammonia-nitrogen desorption pond 3 is connected with the import of downflow weir A5, the water outlet of primary clarifier 6 with
The water inlet of pH regulating reservoirs 7 is connected, and chemicals dosing plant A18 is connected by chemical feed pipe with ammonia-nitrogen desorption pond 3, chemicals dosing plant B19
It is connected by chemical feed pipe with pH regulating reservoirs 7, the bottom of primary clarifier 6 is provided with sludge outlet 20, and collection removes high content iron
Ion, ammonia nitrogen removal, adjust pH, remove the functions such as part COD in the integrated approach unit of one.
The biochemical treatment tank includes pond body, and two partition plates are provided with pond body, and pond body inner cavity is divided into that by partition plate
This relatively independent hydrolysis acidification pool 8, aerobic tank 10 and second-level settling pond 12, are provided with semi-soft suspension in hydrolysis acidification pool 8
Filler 9, soft floating stuffing 11 and aeration tube B15, the gas outlet of aeration tube B15 and roots blower 17 are provided with aerobic tank 10
It is connected, downflow weir B16 and slush pump 13 is provided with second-level settling pond 12, slush pump 13 is located at the interior bottom of second-level settling pond 12
Portion, the outlet of slush pump 13 are connected by mud return line 14 with aerobic tank 10, hydrolysis acidification pool 8, aerobic tank 10 and two level
Sedimentation basin 12 is both provided with water outlet and water inlet, and the water inlet of hydrolysis acidification pool 8 passes through pipeline and the water outlet of pH regulating reservoirs 7
It is connected, the water outlet of hydrolysis acidification pool 8 is connected with the water inlet of aerobic tank 10, the water outlet and downflow weir of aerobic tank 10
The import of B16 is connected, and the water outlet of second-level settling pond 12 is water purification outlet, further strengthens the removal of ammonia nitrogen, COD, with full
Sufficient wastewater treatment index.
Correspondingly, the present invention also provides a kind of using the useless of the detachable citric acid cleaning wastewater treatment equipment of above-mentioned movement
Method for treating water, includes the following steps：
a）By in citric acid cleaning wastewater collection to wastewater storage tank 1；
b）Citric acid cleaning waste water pending in wastewater storage tank 1 is flowed into pretreatment pool, the iron ion of high concentration is reduced, takes off
Ammonia nitrogen, adjust pH, remove part COD；
c）Pretreated waste water is flowed into biochemical treatment tank, further strengthens the removal of ammonia nitrogen, COD.
Preferably, the step b）Specially：Citric acid cleaning waste water pending in wastewater storage tank 1 is flowed into ammonia nitrogen to blow
De- pond 3, the pH value of original cleaning waste water is relatively low, and contains substantial amounts of ferric ion and ammonia nitrogen, by chemicals dosing plant A to ammonia nitrogen
In stripping pond 3 plus lye (sodium hydroxide) adjusts wastewater pH and adds calcium oxide into ammonia-nitrogen desorption pond 3 to 9, then by chemicals dosing plant A
PH to more than 11 is adjusted, citric acid can generate calcium citrate not soluble in water, while iron ion and hydroxyl with calcium ion reaction
Ferric hydroxide precipitate is generated, the stripping of generation and ammonia nitrogen beneficial to ferric hydroxide precipitate, reduces ammonia-nitrogen content in waste water, go iron removaling
Ion, reduces citric acid content, reduces the COD concentration in waste water；Water in ammonia-nitrogen desorption pond 3 after processing flows into primary clarifier
6, using sloping plate deposition, precipitate through being arranged outside sludge outlet 20；Water in primary clarifier 6 after processing flows into pH regulating reservoirs 7, at this
Reason unit major function is to adjust previous step water outlet pH, to meet biochemical treatment condition, is adjusted by chemicals dosing plant B19 to pH
Sulfuric acid solution is added in pond 7, the pH to 8~9 in waste water, sulfate radical and calcium ion generation calcium sulfate is adjusted, reduces calcium in waste water
Ion concentration.
Preferably, the step c）Specially：Water in pH regulating reservoirs 7 after processing flows into hydrolysis acidification pool 8, passes through raising
The biodegradability of waste water, reduces waste water quality and changes impact to subsequent technique, forms denitrification environment, and denitrifying bacteria is by Asia
Nitrate and nitrate transformation are nitrogen；Water in hydrolysis acidification pool 8 after processing flows into aerobic tank 10, and activated sludge process reduces useless
COD and ammonia nitrogen in water, by adjusting the dissolved oxygen content of waste water, using the activity curve of microorganism, according to different activities section,
The outer row's excess sludge of timing, controls sludge reflux, can reach the purpose strengthened and remove pollutant；Water in aerobic tank 10 after processing
Second-level settling pond 12 is flowed into, the water outlet after active sludge treatment is still muddy water mixed solution, and second-level settling pond 12 can make consolidating for waste water
Body suspended matter reduces, so as to achieve the purpose that clarification and effluent, the sludge reflux of generation to aerobic tank 10.
Preferably, step b）In the ammonia-nitrogen desorption pond 3, sodium hydroxide 0.4% is added, calcium oxide 1.2% is used to adjust
The pH of waste water.
Preferably, step b）In the ammonia-nitrogen desorption pond 3, gas-water ratio：1000~2000：1, aeration time：3.5~
4.5h。
Preferably, step b）In the primary clarifier 6, the sedimentation time：1~2h.
Preferably, step c）In the pH regulating reservoirs 7, pH is about 10 or so after stripping precipitation, and processing industry sulfuric acid is adjusted
To 8~9.
Preferably, step b）Hydrolysis acidification pool 8, aerobic tank 10, the biological treatment stage, needs to cultivate before beginning to use
Activated sludge.Biochemical section is by the activated sludge of sewage treatment plant's aerobic tank aqueous 80% according to pool volume（Anaerobism and aerobic total appearance
Product）10% added, open that roots blower is vexed to expose 3~5 days, recover sludge activity, make biochemical section biologic packing material biofilm complete
Into.During normal operation, anoxic section 0.3~0.7mg/L of dissolved oxygen, 4.0~5.0mg/L of aerobic section dissolved oxygen are controlled.
Application case one：
The process object of wastewater treatment equipment is certain chemical enterprise citric acid cleaning waste water, its COD is 11774mg/L, and ammonia nitrogen is
1356 mg/L, total iron are 1103mg/L.
Using the portable detachable processing unit of citric acid cleaning waste water of the present invention, its processing step is：
The first step：Citric acid cleaning waste water is promoted to from wastewater storage tank in ammonia-nitrogen desorption pond；
Second step：Sodium hydroxide and 1.2% hydrogen in ammonia-nitrogen desorption pond by the pH of citric acid cleaning waste water by addition 0.4%
Calcium oxide is adjusted to more than 11.Roots blower aeration is opened at the same time, and it is 1200 to set gas-water ratio:1, aeration time 4h；
3rd step：The water outlet in ammonia-nitrogen desorption pond is entered in primary clarifier, sedimentation time 1.5h；
4th step：Waste water enters pH regulating reservoirs after precipitation, and pH value of waste water is 9.5~10, is adjusted with industrial sulphuric acid to 8.5.On
Citric acid cleaning waste water is stated after pretreatment pool pre-processes, its COD is 988mg/L, and ammonia nitrogen is 66 mg/L, and total iron is 3mg/
L。
5th step：Waste water enters biochemical treatment tank after pretreatment and carries out biochemical treatment.Need to cultivate before biochemical section use
Activated sludge, by the activated sludge of sewage treatment plant's aerobic tank aqueous 80% according to pool volume（Anaerobism and aerobic total measurement (volume)）'s
10% is added, and is opened the vexed exposure of roots blower 3~5 days, is recovered sludge activity, complete biochemical section biologic packing material biofilm.Normally
During operation, anoxic section 0.3~0.7mg/L of dissolved oxygen, 4.0~5.0mg/L of aerobic section dissolved oxygen are controlled.
6th step：The water outlet of aerobic tank enters second-level settling pond, and the mud-water separation in second-level settling pond through downflow weir, dirty
Mud is back to aerobic tank through slush pump and mud return line.
After biochemical treatment tank biochemical treatment, its COD is 27mg/L, and ammonia nitrogen is 2 mg/L, and total iron does not detect.Water outlet water
Matter reaches《Urban wastewater treatment firm pollutant emission standard》（GB18918-2002）In level-one A standards.
The specific embodiment of the present invention is not construed as limiting the invention, every similar structure using the present invention and change
Change, within the scope of the present invention.
Claims (6)
1. the mobile detachable citric acid cleaning wastewater treatment equipment of one kind, it is characterised in that：Including wastewater storage tank（1）, it is used for
The temporary transient storage of waste water；Wastewater storage tank（1）Be followed by pretreatment pool, for remove high content iron ion, ammonia nitrogen removal, adjust pH, go
Except part COD；Pretreatment pool is followed by biochemical treatment tank, for further strengthening the removal of ammonia nitrogen, COD.
A kind of 2. mobile detachable citric acid cleaning wastewater treatment equipment as claimed in claim 1, it is characterised in that：It is described
Pretreatment pool include pond body, roots blower（17）, chemicals dosing plant A（18）With chemicals dosing plant B（19）, two are provided with pond body
Pond body inner cavity is divided into ammonia-nitrogen desorption pond independent toward each other by partition plate, partition plate（3）, primary clarifier（6）, pH regulating reservoirs
（7）, ammonia-nitrogen desorption pond（3）Inside it is provided with aeration tube A（4）, aeration tube A（4）With roots blower（17）Gas outlet be connected, just
Level sedimentation basin（6）Inside it is provided with downflow weir A（5）, ammonia-nitrogen desorption pond（3）, primary clarifier（6）With pH regulating reservoirs（7）It is respectively provided with
There are water outlet and water inlet, wastewater storage tank（1）Pass through pipeline and ammonia-nitrogen desorption pond（3）Water inlet be connected, wastewater storage tank（1）
With ammonia-nitrogen desorption pond（3）Between pipeline on be provided with raw water pump（2）, ammonia-nitrogen desorption pond（3）Water outlet and downflow weir A（5）
Import be connected, primary clarifier（6）Water outlet and pH regulating reservoirs（7）Water inlet be connected, chemicals dosing plant A（18）It is logical
Cross chemical feed pipe and ammonia-nitrogen desorption pond（3）It is connected, chemicals dosing plant B（19）Pass through chemical feed pipe and pH regulating reservoirs（7）It is connected, it is primary
Sedimentation basin（6）Bottom be provided with sludge outlet（20）.
A kind of 3. mobile detachable citric acid cleaning wastewater treatment equipment as claimed in claim 1, it is characterised in that：It is described
Biochemical treatment tank include pond body, be provided with two partition plates in pond body, pond body inner cavity is divided into independent toward each other by partition plate
Hydrolysis acidification pool（8）, aerobic tank（10）And second-level settling pond（12）, hydrolysis acidification pool（8）Inside it is provided with semi-soft floating stuffing
（9）, aerobic tank（10）Inside it is provided with soft floating stuffing（11）With aeration tube B（15）, aeration tube B（15）With roots blower（17）
Gas outlet be connected, second-level settling pond（12）Inside it is provided with downflow weir B（16）And slush pump（13）, slush pump（13）Positioned at two
Level sedimentation basin（12）Interior bottom, slush pump（13）Outlet pass through mud return line（14）With aerobic tank（10）It is connected, water
Solve acidification pool（8）, aerobic tank（10）And second-level settling pond（12）It is both provided with water outlet and water inlet, hydrolysis acidification pool（8）'s
Water inlet passes through pipeline and pH regulating reservoirs（7）Water outlet be connected, hydrolysis acidification pool（8）Water outlet and aerobic tank（10）'s
Water inlet is connected, aerobic tank（10）Water outlet and downflow weir B（16）Import be connected, second-level settling pond（12）Water outlet
Mouth is water purification outlet.
4. at a kind of waste water using the detachable citric acid cleaning wastewater treatment equipment of any one of the claim 1-3 movements
Reason method, includes the following steps：
a）By citric acid cleaning wastewater collection to wastewater storage tank（1）It is interior；
b）By wastewater storage tank（1）Interior pending citric acid cleaning waste water is flowed into pretreatment pool, reduce high concentration iron ion,
Ammonia nitrogen removal, adjust pH, remove part COD；
c）Pretreated waste water is flowed into biochemical treatment tank, further strengthens the removal of ammonia nitrogen, COD.
A kind of 5. wastewater treatment method as claimed in claim 4, it is characterised in that：The step b）Specially：Waste water is stored up
Tank（1）Interior pending citric acid cleaning waste water flows into ammonia-nitrogen desorption pond（3）, the pH value of original cleaning waste water is relatively low, and contains
Substantial amounts of ferric ion and ammonia nitrogen, by chemicals dosing plant A to ammonia-nitrogen desorption pond（3）Interior plus lye adjusts wastewater pH to 9, then leads to
Cross chemicals dosing plant A（18）To ammonia-nitrogen desorption pond（3）Interior plus calcium oxide adjusts pH to more than 11, and citric acid can give birth to calcium ion reaction
Into calcium citrate not soluble in water, while iron ion generates ferric hydroxide precipitate with hydroxyl, beneficial to the life of ferric hydroxide precipitate
Into the stripping with ammonia nitrogen, ammonia-nitrogen content in waste water is reduced, goes iron ions, reduces citric acid content, the COD reduced in waste water is dense
Degree；Ammonia-nitrogen desorption pond（3）Water after interior processing flows into primary clarifier（6）, using sloping plate deposition, precipitate through sludge outlet（20）
Outer row；Primary clarifier（6）Water after interior processing flows into pH regulating reservoirs（7）, which is to adjust previous step
Water outlet pH, to meet biochemical treatment condition, passes through chemicals dosing plant B（19 ）To pH regulating reservoirs（7）Interior addition sulfuric acid solution, is adjusted
PH to 8~9 in waste water, sulfate radical and calcium ion generation calcium sulfate, reduce calcium ion content in waste water.
A kind of 6. wastewater treatment method as claimed in claim 4, it is characterised in that：The step c）Specially：PH regulating reservoirs
（7）Water after interior processing flows into hydrolysis acidification pool（8）, by improving the biodegradability of waste water, waste water quality change is reduced to rear
The impact of continuous technique, forms denitrification environment, nitrite and nitrate transformation are nitrogen by denitrifying bacteria；Hydrolysis acidification pool
（8）Water after interior processing flows into aerobic tank（10）, activated sludge process reduces the COD and ammonia nitrogen in waste water, by adjusting waste water
Dissolved oxygen content, using the activity curve of microorganism, according to different activities section, the outer row's excess sludge of timing, controls sludge reflux,
It can reach the purpose strengthened and remove pollutant；Aerobic tank（10）Water after interior processing flows into second-level settling pond（12）, activated sludge
Water outlet after processing is still muddy water mixed solution, second-level settling pond（12）It can make the solid suspension of waste water reduce, so as to reach clear
Clear out the purpose of water, the sludge reflux of generation to aerobic tank（10）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711245449.4A CN108002649A (en) | 2017-12-01 | 2017-12-01 | Mobile detachable citric acid cleaning wastewater treatment equipment and wastewater treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711245449.4A CN108002649A (en) | 2017-12-01 | 2017-12-01 | Mobile detachable citric acid cleaning wastewater treatment equipment and wastewater treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108002649A true CN108002649A (en) | 2018-05-08 |
Family
ID=62055719
Family Applications (1)
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| CN201711245449.4A Withdrawn CN108002649A (en) | 2017-12-01 | 2017-12-01 | Mobile detachable citric acid cleaning wastewater treatment equipment and wastewater treatment method |
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| CN103130368A (en) * | 2013-03-04 | 2013-06-05 | 上海电力学院 | Treatment method for rapid degradation of power plant citric acid boiler cleaning waste water |
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| CN103130368A (en) * | 2013-03-04 | 2013-06-05 | 上海电力学院 | Treatment method for rapid degradation of power plant citric acid boiler cleaning waste water |
| CN203159401U (en) * | 2013-03-28 | 2013-08-28 | 厦门绿动力环境治理工程有限公司 | Pickling and phosphatizing wastewater treatment system |
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