CN108911367A - Polyamide waste water treatment system and its treatment process - Google Patents
Polyamide waste water treatment system and its treatment process Download PDFInfo
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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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
- C02F2103/38—Polymers
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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
- C02F2209/02—Temperature
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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
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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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
- C02F2209/14—NH3-N
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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
- C02F2209/16—Total nitrogen (tkN-N)
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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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
Abstract
The present invention relates to technical field of waste water processing, disclose polyamide waste water treatment system, including cooling tower (11), conditioning tank (1), reaction flotation tank (2), hydrolysis acidification pool (3), hydrolytic precipitation pool (4), intermediate pool (5), up-flow anaerobic sludge blanket (6), preposition anoxic pond (7), aerobic tank (8), postposition anoxic pond (9), secondary settling tank (10), reaction tank (22), final deposition pool (23) and discharge pond (12) being sequentially communicated, polyamide waste water treatment process is also disclosed.Processing system operational efficiency of the invention is high, reduces construction investment to the utmost under conditions of meeting technique and requiring, reduces operating cost；Treatment process of the invention is energy-efficient, is easily managed, is technologically advanced, is safe reliable, it can be ensured that the treatment effect of polyamide waste water can deal carefully with generated grid slag and sludge pollution object in polyamide wastewater treatment process, avoid generating secondary pollution.
Description
Technical field
The present invention relates to technical field of waste water processing, more particularly to a kind of polyamide waste water treatment system and its processing work
Skill.
Background technique
Polyamide is a kind of common high-molecular compound, can be used for the manufacturing of the products such as fabric, in polyamides
A certain amount of polyamide waste water can be generated in amine slice production process, the ingredient of production polyamide waste water is mainly caprolactam list
Body, titanium dioxide and p-phthalic acid etc., so that the COD (COD), total nitrogen and ammonia-nitrogen content in waste water are higher,
Biodegradable difficult, direct emission will cause environment seriously to pollute, and carry out processing and reach standard as defined in environmental protection administration
After could discharge.
Summary of the invention
The present invention disadvantage lower for the removal efficiency of COD, total nitrogen and ammonia nitrogen in polyamide waste water in the prior art,
Provide polyamide waste water treatment system and its treatment process.
In order to solve the above-mentioned technical problem, the present invention is addressed by following technical proposals：
Polyamide waste water treatment system, including be sequentially communicated cooling tower, conditioning tank, reaction flotation tank, hydrolysis acidification pool,
Hydrolytic precipitation pool, intermediate pool, up-flow anaerobic sludge blanket, preposition anoxic pond, aerobic tank, postposition anoxic pond, secondary settling tank, reaction
Pond, final deposition pool and discharge pond, further include the second pump, the 4th pump and the 5th pump, the outlet of hydrolysis acidification pool and hydrolytic precipitation pool
Inlet communication, the outlet of hydrolytic precipitation pool also pass through the inlet communication of the second pump and hydrolysis acidification pool, the outlet of preposition anoxic pond
With the inlet communication of aerobic tank, the outlet of aerobic tank also passes through the 4th pump and is connected to preposition anoxic pond, and the outlet of secondary settling tank is also logical
Cross the inlet communication of the 5th pump and aerobic tank；It further include collection mud sump, folded spiral shell dewaterer and sludge concentration tank, sludge concentration tank and collection
Mud sump connection, collection mud sump are connected to folded spiral shell dewaterer, and reaction flotation tank, hydrolytic precipitation pool and final deposition pool connect with collection mud sump respectively
Logical, conditioning tank, up-flow anaerobic sludge blanket, preposition anoxic pond and secondary settling tank are connected to sludge concentration tank respectively, fold spiral shell dewaterer
Also it is connected to conditioning tank.
Preferably, further including accident pool, accident pool is connected to conditioning tank.
Preferably, further including emission-control equipment, accident pool, conditioning tank, reaction flotation tank, hydrolysis acidification pool, hydrolysis
Sedimentation basin, intermediate pool, preposition anoxic pond, aerobic tank and postposition anoxic pond are connected to emission-control equipment respectively.
Polyamide waste water treatment process, includes the following steps：
(1) polyamide waste water enters conditioning tank after cooling tower is cooled to 40-50 DEG C, is stirred continuously, hydraulic retention 2-4d
Afterwards, the polyamide waste water after adjusting enters reaction flotation tank, reacts and liquid alkaline, PAC and PAM and nutritional agents are added in flotation tank,
Dross and waste water are generated after reacting 6-10h, dross is delivered to collection mud sump, and waste water is delivered to after hydrolysis acidification pool handles 45-50h
Hydrolytic precipitation pool, generates sediment and the first filtrate, sediment are delivered to collection mud sump, and the first filtrate is delivered to hydrolysis acidification pool
Afterwards, intermediate pool is delivered to using hydrolytic precipitation pool；
(2) be added liquid alkaline in intermediate pool, the first filtrate obtained after intermediate pool handles 0.5-1.5h in water, middle water exists
Sludge and the second filtrate are obtained after reacting 3-4d in up-flow anaerobic sludge blanket, sludge is transported to collection after sludge concentration tank is concentrated
Mud sump, to preposition anoxic pond, the second filtrate is delivered in preposition anoxic pond, is stirred continuously the sludge reflux in sludge concentration tank,
After anti-nitre 75-80h, into aerobic tank, it is passed through air and liquid alkaline in aerobic tank, nitrifies 130-140h, sludge is delivered to preposition lack
In oxygen pond, waste water is delivered to postposition anoxic pond, adds organic carbon source in postposition anoxic pond, and after denitrification 20-30h, waste water enters
Secondary settling tank；
(3) two hypostasis and third filtrate are obtained after hydraulic retention 1-3d in secondary settling tank, two hypostasis are delivered to sludge condensation
It is being delivered to collection mud sump after the concentration of pond, third filtrate enters reaction tank, PAM and active carbon is added in reaction tank, after reacting 1-3h,
Into final deposition pool, whole hypostasis and water outlet are obtained after hydraulic retention 1-2d, whole hypostasis is delivered to collection mud sump, and water outlet is delivered to discharge
Pond；
(4) collect the dross in mud sump, sediment, sludge, two hypostasis and whole hypostasis to be contained after folded spiral shell dewaterer dehydration
Water is the over dry sludge of 75%-85%, and the water sloughed is delivered to conditioning tank, and the water that sludge concentrator obtains is delivered to adjusting
Pond.
Preferably, further including step (5)：Accident waste water is delivered to accident pool, after hydraulic retention 1-2d, into adjusting
Pond.
Preferably, further including step (6)：Accident pool, conditioning tank, reaction flotation tank, hydrolysis acidification pool, hydrolytic precipitation
Heel row of the exhaust gas through emission-control equipment processing generated in pond, intermediate pool, preposition anoxic pond, aerobic tank and postposition anoxic pond
It puts.
Preferably, liquid alkaline is the sodium hydrate aqueous solution that mass percentage concentration is 30-32%, liquid alkaline in step (1)
Additive amount is that 2.0-2.5kg is added in every cubic meter of water, and the additive amount of PAC is to add 0.1-0.2kg, PAM in every cubic meter of water
Additive amount be to add 0.003-0.007kg in every cubic meter of water, nutritional agents is glucose, and the additive amount of nutritional agents is every cube
Meter Shui Zhong adds 0.1-0.2kg.
Preferably, the liquid alkaline in intermediate pool and aerobic tank is that mass percentage concentration is 30-32% in step (2)
Sodium hydrate aqueous solution, the additive amount of liquid alkaline is to add 2.0-2.8g in every cubic meter of water.
Preferably, organic carbon source is methanol in step (2), organic carbon source additive amount is to add in every cubic meter of water
0.04-0.08kg。
Preferably, the additive amount of active carbon is to add 0.1-0.2kg in every cubic meter of water in reaction tank in step (3),
The additive amount of PAM is to add 0.004-0.006kg in every cubic meter of water.
The characteristics of polyamide waste water is organic concentration height, and total nitrogen is high, good biodegradability.It is easily biochemical to such high concentration
Organic wastewater carries out Anaerobic Treatment using up-flow anaerobic sludge blanket, and the organic matter of easy biochemistry is decomposed under the action of anaerobic bacteria
For methane, the processing is easily controllable, and operational administrative is more convenient, and sludge loading is high, energy consumption is small, sludge yield is few, and
The methane of generation is a kind of recovering energy source.
Ammonia nitrogen nearly all exists with compound state in polyamide waste water, after anaerobic organism and Aerobic biological process, chemical combination
State nitrogen is eventually present in water in the form of ammonia nitrogen, causes the situation that ammonia nitrogen is stepped up in water.Conventional materialization treatment process adds
Dose is big, and operating cost is high, and the present invention uses nitrification processing method, is turned organic nitrogen using the ammonifiers cultivated in polyamide waste water
Ammonia nitrogen is turned to, then converts nitrate nitrogen under aerobic condition for ammonia nitrogen by nitrobacteria, to achieve the purpose that remove ammonia nitrogen.
After nitrification processing, organic nitrogen is completely converted into ammonia nitrogen, then after aerobic nitrification is handled, and mineralized nitrogen is nitre state
Nitrogen because effluent index also has total nitrogen higher emission request, therefore also needs to do denitrification to the nitrification nitrogen in polyamide waste water
Processing：Denitrifying bacterium converts nitrogen for nitrate nitrogen, nitrite nitrogen using dissolved organic matter and is discharged to atmosphere under anaerobic condition
In, to remove total nitrogen.
The present invention is applicable in using second level denitrification+aerobic nitrification processing, i.e., preposition anoxic pond+aerobic tank+postposition aerobic tank
The polyamide waste water big in reflux ratio, total nitrogen content is high, removal rate can achieve 90% or more, preposition anoxic pond+aerobic tank master
Nitrification-denitrification processing is carried out, ammonia nitrogen is dropped into units in aerobic tank, by reflux, preposition anoxic pond carries out denitrification
Total nitrogen is got rid of 80% or more by processing, and remaining total nitrogen enters postposition anoxic pond and carries out denitrification processing again, and add has in right amount
Carbon source of the machine object as denitrifying bacterium, remaining total nitrogen is handled in postposition anoxic pond can more easily reach discharge standard.
The present invention is collected using materialized mud, recycles folded spiral shell dewaterer to carry out at dehydration filters pressing after biochemical sludge concentration
Reason folds spiral shell dewaterer high degree of automation, and occupied area is small, and labor intensity is small, moisture percentage in sewage sludge can be dropped to 75%-
85%.Although belt filter press also has the advantages that high degree of automation and labor intensity are small, sludge after belt filter press filters pressing
Moisture content is generally between 75%-85%, but the volume of belt filter press is big, and transport is difficult, and cost of disposal is high.
This hair has significant technical effect due to using above technical scheme：
Processing system operational efficiency of the invention is high, reduces construction to the utmost under conditions of meeting technique and requiring
Investment reduces operating cost；Up-flow anaerobic sludge blanket can remove organic matter, and organic matter is decomposed into methane, preposition anoxic
Pond+aerobic tank+postposition aerobic tank is with the use of the total nitrogen and ammonia nitrogen that can remove in polyamide waste water 90% or more.Of the invention
Treatment process is energy-efficient, is easily managed, is technologically advanced, is safe reliable, it can be ensured that the treatment effect of polyamide waste water, polyamides
Amine waste water can achieve the direct emission standard of GB 31571-2015 after treatment process processing of the invention；Simultaneously.The present invention
Treatment process can deal carefully with generated grid slag and sludge pollution object in polyamide wastewater treatment process, avoid generation two
Secondary pollution.
Detailed description of the invention
Fig. 1 is system connection block diagram of the invention.
Fig. 2 is process flow diagram of the invention.
The toponym that each number designation is referred in attached drawing is as follows：1-conditioning tank, 2-reaction flotation tanks, 3-hydrolysis
Acidification pool, 4-hydrolytic precipitation pools, 5-intermediate pools, 6-up-flow anaerobic sludge blankets, 7-preposition anoxic ponds, 8-aerobic tanks,
9-postposition anoxic ponds, 10-secondary settling tanks, 11-cooling towers, 12-discharge ponds, the 14-the second pump, 15-thirds pump, 16-the four
Pump, the 17-the five pump, 18-accident pools, 19-emission-control equipments, 22-reaction tanks, 23-final deposition pools, 24-collection mud sumps,
25-folded spiral shell dewaterers, 27-sludge concentration tanks.
Specific embodiment
Present invention is further described in detail with embodiment with reference to the accompanying drawing.
Embodiment 1
Polyamide waste water treatment system, as shown in Figure 1, including the cooling tower 11 being sequentially communicated, conditioning tank 1, reaction air bearing
Pond 2, hydrolysis acidification pool 3, hydrolytic precipitation pool 4, intermediate pool 5, up-flow anaerobic sludge blanket 6, preposition anoxic pond 7, aerobic tank 8,
Postposition anoxic pond 9, secondary settling tank 10, reaction tank 22, final deposition pool 23 and discharge pond 12 further include the second pump 14, the 4th pump 16 and the
Five pumps 17, the outlet of hydrolysis acidification pool 3 and the inlet communication of hydrolytic precipitation pool 4, the outlet of hydrolytic precipitation pool 4 also passes through the second pump
14 with the inlet communication of hydrolysis acidification pool 3, the outlet of preposition anoxic pond 7 and the inlet communication of aerobic tank 8, the outlet of aerobic tank 8
It is also connected to by the 4th pump 16 with preposition anoxic pond 7, the outlet of secondary settling tank 10 is also connected by the import of the 5th pump 17 and aerobic tank 8
It is logical；Further include that collection mud sump 24, folded spiral shell dewaterer 25 and sludge concentration tank 27, sludge concentration tank 27 are connected to collection mud sump 24, collects mud
Pond 24 is connected to folded spiral shell dewaterer 25, and reaction flotation tank 2, hydrolytic precipitation pool 4 and final deposition pool 23 are connected to collection mud sump 24 respectively, is adjusted
Section pond 1, up-flow anaerobic sludge blanket 6, preposition anoxic pond 7 and secondary settling tank 10 are connected to sludge concentration tank 27 respectively, fold spiral shell dehydration
Machine 25 is also connected to conditioning tank 1.
It further include accident pool 18, accident pool 18 is connected to conditioning tank 1.
It further include emission-control equipment 19, accident pool 18, conditioning tank 1, reaction flotation tank 2, hydrolysis acidification pool 3, hydrolysis are heavy
Shallow lake pond 4, intermediate pool 5, preposition anoxic pond 7, aerobic tank 8 and postposition anoxic pond 9 are connected to emission-control equipment 19 respectively.
6 meters of height, entire disposal process realize " sludge does not land " to folded spiral shell dewaterer 25 from the ground, fold 25 dump of spiral shell dewaterer
It directly is discharged into bucket, is then discharged into Sludge loading and transport vehicle outward transport.
Embodiment 2
The intraday effect of polyamide waste water is 450m3/ d, the processing system based on continuous operation for 24 hours, then when handle water
Amount is 19m3/h。
Polyamide waste water treatment process, includes the following steps：
(1) polyamide waste water enters conditioning tank 1 after cooling tower 11 is cooled to 40 DEG C, is stirred continuously, after hydraulic retention 3d,
Polyamide waste water after adjusting enters reaction flotation tank 2, reacts and liquid alkaline, PAC and PAM and nutritional agents are added in flotation tank 2, instead
Dross and waste water are generated after answering 8h, dross is delivered to collection mud sump 24, and waste water is delivered to hydrolysis after hydrolysis acidification pool 3 handles 48h
Sedimentation basin 4 generates sediment and the first filtrate, and sediment is delivered to collection mud sump 24, and the first filtrate is delivered to hydrolysis acidification pool 3
Afterwards, intermediate pool 5 is delivered to using hydrolytic precipitation pool 4；
(2) be added liquid alkaline in intermediate pool 5, the first filtrate obtained after intermediate pool handles 1h in water, middle water is at upstream
Sludge and the second filtrate are obtained after reacting 3.5d in formula anaerobic mud bed 6, sludge is transported to collection after the concentration of sludge concentration tank 27
Mud sump 24, the sludge reflux in sludge concentration tank 27 is to preposition anoxic pond 7, and the second filtrate is delivered in preposition anoxic pond 7, constantly
It stirs, after anti-nitre 79h, into aerobic tank 8, air and liquid alkaline is passed through in aerobic tank 8, nitrify 136h, sludge is delivered to preposition lack
In oxygen pond 7, waste water is delivered to postposition anoxic pond 9, adds organic carbon source in postposition anoxic pond 9, and after denitrification 25h, waste water enters
Secondary settling tank 10；
(3) two hypostasis and third filtrate are obtained after hydraulic retention 1-3d in secondary settling tank 10, it is dense that two hypostasis are delivered to sludge
Contracting pond 27 is being delivered to collection mud sump 24 after being concentrated, and third filtrate enters reaction tank 22, PAM and active carbon is added in reaction tank 22,
After reacting 2h, into final deposition pool 23, whole hypostasis and water outlet are obtained after hydraulic retention 1.5d, whole hypostasis is delivered to collection mud sump 24, out
Water is delivered to discharge pond 12；
(4) collect the dross in mud sump 24, sediment, sludge, two hypostasis and whole hypostasis to obtain after folded spiral shell dewaterer 25 is dehydrated
The over dry sludge for being 75%-85% to water content, the water sloughed are delivered to conditioning tank 1, the water conveying that sludge concentrator 27 obtains
To conditioning tank 1.
It further include step (5)：Accident waste water is delivered to accident pool 18, after hydraulic retention 1.5d, into conditioning tank 1.
It further include step (6)：Accident pool 18, conditioning tank 1, reaction flotation tank 2, hydrolysis acidification pool 3, hydrolytic precipitation pool 4, in
Between after the exhaust gas that generates in pond 5, preposition anoxic pond 7, aerobic tank 8 and postposition anoxic pond 9 handles through emission-control equipment 19
Discharge.
In step (1), liquid alkaline is the sodium hydrate aqueous solution that mass percentage concentration is 30-32%, and the additive amount of liquid alkaline is
2.3kg is added in every cubic meter of water, the additive amount of PAC is that 0.15kg is added in every cubic meter of water, and the additive amount of PAM is every cube
Meter Shui Zhong adds 0.005kg, and nutritional agents is glucose, and the additive amount of nutritional agents is to add 0.15kg in every cubic meter of water.
In step (2), the liquid alkaline in intermediate pool and aerobic tank is the sodium hydroxide water that mass percentage concentration is 31%
Solution, the additive amount of liquid alkaline are to add 2.4g in every cubic meter of water.
In step (2), organic carbon source is methanol, and organic carbon source additive amount is to add 0.06kg in every cubic meter of water.
In step (3), the additive amount of active carbon is to add 0.15kg, the additive amount of PAM in every cubic meter of water in reaction tank
To add 0.005kg in every cubic meter of water.
The characteristics of polyamide waste water is organic concentration height, and total nitrogen is high, good biodegradability.It is easily biochemical to such high concentration
Organic wastewater carries out Anaerobic Treatment using up-flow anaerobic sludge blanket, and the organic matter of easy biochemistry is decomposed under the action of anaerobic bacteria
For methane, the processing is easily controllable, and operational administrative is more convenient, and sludge loading is high, energy consumption is small, sludge yield is few, and
The methane of generation is a kind of recovering energy source.
Ammonia nitrogen nearly all exists with compound state in polyamide waste water, after anaerobic organism and Aerobic biological process, chemical combination
State nitrogen is eventually present in water in the form of ammonia nitrogen, causes the situation that ammonia nitrogen is stepped up in water.Conventional materialization treatment process adds
Dose is big, and operating cost is high, and the present embodiment uses nitrification processing method, using the ammonifiers cultivated in polyamide waste water by organic nitrogen
It is converted into ammonia nitrogen, then converts nitrate nitrogen under aerobic condition for ammonia nitrogen by nitrobacteria, to achieve the purpose that remove ammonia nitrogen.
After nitrification processing, organic nitrogen is completely converted into ammonia nitrogen, then after aerobic nitrification is handled, and mineralized nitrogen is nitre state
Nitrogen because effluent index also has total nitrogen higher emission request, therefore also needs to do denitrification to the nitrification nitrogen in polyamide waste water
Processing：Denitrifying bacterium converts nitrogen for nitrate nitrogen, nitrite nitrogen using dissolved organic matter and is discharged to atmosphere under anaerobic condition
In, to remove total nitrogen.
The present embodiment is fitted using second level denitrification+aerobic nitrification processing, i.e., preposition anoxic pond+aerobic tank+postposition aerobic tank
The polyamide waste water big for reflux ratio, total nitrogen content is high, removal rate can achieve 90% or more, preposition anoxic pond+aerobic tank
It is substantially carried out nitrification-denitrification processing, ammonia nitrogen is dropped into units in aerobic tank, by reflux, preposition anoxic pond carries out anti-nitre
Change processing and total nitrogen is got rid of 80% or more, remaining total nitrogen enters postposition anoxic pond and carries out denitrification processing again, adds appropriate
Carbon source of the organic matter as denitrifying bacterium, remaining total nitrogen is handled in postposition anoxic pond can more easily reach discharge standard.
The present embodiment is collected using materialized mud, recycles folded spiral shell dewaterer to carry out at dehydration filters pressing after biochemical sludge concentration
Reason folds spiral shell dewaterer high degree of automation, and occupied area is small, and labor intensity is small, moisture percentage in sewage sludge can be dropped to 75%-
85%.Although belt filter press also has the advantages that high degree of automation and labor intensity are small, sludge after belt filter press filters pressing
Moisture content is generally between 75%-85%, but the volume of belt filter press is big, and transport is difficult, and cost of disposal is high.
Through measuring, the processing system of the present embodiment is as shown in table 1 to the processing result of polyamide waste water：
The processing result of 1 the present embodiment of table
As shown in Table 1, polyamide waste water can achieve GB31571-2015's after the processing of the treatment process of the present embodiment
The nitrification-denitrification of direct emission standard, the present embodiment is handled to CODCrRemoval rate reach 96%, the removal rate of ammonia nitrogen is
99.5%, the removal rate of total nitrogen is 95%, and the treatment process of the present embodiment can remove 99.7% CODCr。
Embodiment 3
The intraday effect of polyamide waste water is 450m3/ d, the processing system based on continuous operation for 24 hours, then when handle water
Amount is 19m3/h。
Polyamide waste water treatment process, includes the following steps：
(1) polyamide waste water enters conditioning tank 1 after cooling tower 11 is cooled to 45 DEG C, is stirred continuously, after hydraulic retention 2d,
Polyamide waste water after adjusting enters reaction flotation tank 2, reacts and liquid alkaline, PAC and PAM and nutritional agents are added in flotation tank 2, instead
Dross and waste water are generated after answering 6h, dross is delivered to collection mud sump 24, and waste water is delivered to hydrolysis after hydrolysis acidification pool 3 handles 45h
Sedimentation basin 4 generates sediment and the first filtrate, and sediment is delivered to collection mud sump 24, and the first filtrate is delivered to hydrolysis acidification pool 3
Afterwards, intermediate pool 5 is delivered to using hydrolytic precipitation pool 4；
(2) be added liquid alkaline in intermediate pool 5, the first filtrate obtained after intermediate pool handles 0.5h in water, middle water is upper
Sludge and the second filtrate are obtained after reacting 3d in flow anaerobic sludge bed 6, sludge is transported to collection after the concentration of sludge concentration tank 27
Mud sump 24, the sludge reflux in sludge concentration tank 27 is to preposition anoxic pond 7, and the second filtrate is delivered in preposition anoxic pond 7, constantly
It stirs, after anti-nitre 75h, into aerobic tank 8, air and liquid alkaline is passed through in aerobic tank 8, nitrify 130h, sludge is delivered to preposition lack
In oxygen pond 7, waste water is delivered to postposition anoxic pond 9, adds organic carbon source in postposition anoxic pond 9, and after denitrification 20h, waste water enters
Secondary settling tank 10；
(3) two hypostasis and third filtrate are obtained after hydraulic retention 1d in secondary settling tank 10, two hypostasis are delivered to sludge condensation
Pond 27 is being delivered to collection mud sump 24 after being concentrated, and third filtrate enters reaction tank 22, PAM and active carbon is added in reaction tank 22, instead
After answering 1h, into final deposition pool 23, whole hypostasis and water outlet are obtained after hydraulic retention 1d, whole hypostasis is delivered to collection mud sump 24, is discharged defeated
It send to discharge pond 12；
(4) collect the dross in mud sump 24, sediment, sludge, two hypostasis and whole hypostasis to obtain after folded spiral shell dewaterer 25 is dehydrated
The over dry sludge for being 75%-85% to water content, the water sloughed are delivered to conditioning tank 1, the water conveying that sludge concentrator 27 obtains
To conditioning tank 1.
It further include step (5)：Accident waste water is delivered to accident pool 18, after hydraulic retention 1d, into conditioning tank 1.
It further include step (6)：Accident pool 18, conditioning tank 1, reaction flotation tank 2, hydrolysis acidification pool 3, hydrolytic precipitation pool 4, in
Between after the exhaust gas that generates in pond 5, preposition anoxic pond 7, aerobic tank 8 and postposition anoxic pond 9 handles through emission-control equipment 19
Discharge.
In step (1), liquid alkaline is the sodium hydrate aqueous solution that mass percentage concentration is 30%, and the additive amount of liquid alkaline is often to stand
2.0kg is added in Fang meter Shui, the additive amount of PAC is that 0.1kg is added in every cubic meter of water, and the additive amount of PAM is every cubic meter of water
Middle addition 0.003kg, nutritional agents are glucose, and the additive amount of nutritional agents is to add 0.1kg in every cubic meter of water.
In step (2), the liquid alkaline in intermediate pool and aerobic tank is the sodium hydroxide water that mass percentage concentration is 30%
Solution, the additive amount of liquid alkaline are to add 2.0g in every cubic meter of water.
In step (2), organic carbon source is methanol, and organic carbon source additive amount is to add 0.04kg in every cubic meter of water.
In step (3), the additive amount of active carbon is to add 0.1kg in every cubic meter of water in reaction tank, and the additive amount of PAM is
0.004kg is added in every cubic meter of water.
Through measuring, the processing system of the present embodiment is as shown in table 1 to the processing result of polyamide waste water：
The processing result of 2 the present embodiment of table
As shown in Table 2, polyamide waste water can achieve GB 31571-2015's after the processing of the treatment process of the present embodiment
The nitrification-denitrification of direct emission standard, the present embodiment is handled to CODCrRemoval rate reach 96%, the removal rate of ammonia nitrogen is
99.4%, the removal rate of total nitrogen is 94.2%, and the treatment process of the present embodiment can remove 99.7% CODCr。
Embodiment 4
The intraday effect of polyamide waste water is 450m3/ d, the processing system based on continuous operation for 24 hours, then when handle water
Amount is 19m3/h。
Polyamide waste water treatment process, includes the following steps：
(1) polyamide waste water enters conditioning tank 1 after cooling tower 11 is cooled to 50 DEG C, is stirred continuously, after hydraulic retention 4d,
Polyamide waste water after adjusting enters reaction flotation tank 2, reacts and liquid alkaline, PAC and PAM and nutritional agents are added in flotation tank 2, instead
Dross and waste water are generated after answering 10h, dross is delivered to collection mud sump 24, and waste water is delivered to hydrolysis after hydrolysis acidification pool 3 handles 50h
Sedimentation basin 4 generates sediment and the first filtrate, and sediment is delivered to collection mud sump 24, and the first filtrate is delivered to hydrolysis acidification pool 3
Afterwards, intermediate pool 5 is delivered to using hydrolytic precipitation pool 4；
(2) be added liquid alkaline in intermediate pool 5, the first filtrate obtained after intermediate pool handles 1.5h in water, middle water is upper
Sludge and the second filtrate are obtained after reacting 4d in flow anaerobic sludge bed 6, sludge is transported to collection after the concentration of sludge concentration tank 27
Mud sump 24, the sludge reflux in sludge concentration tank 27 is to preposition anoxic pond 7, and the second filtrate is delivered in preposition anoxic pond 7, constantly
It stirs, after anti-nitre 80h, into aerobic tank 8, air and liquid alkaline is passed through in aerobic tank 8, nitrify 140h, sludge is delivered to preposition lack
In oxygen pond 7, waste water is delivered to postposition anoxic pond 9, adds organic carbon source in postposition anoxic pond 9, and after denitrification 30h, waste water enters
Secondary settling tank 10；
(3) two hypostasis and third filtrate are obtained after hydraulic retention 3d in secondary settling tank 10, two hypostasis are delivered to sludge condensation
Pond 27 is being delivered to collection mud sump 24 after being concentrated, and third filtrate enters reaction tank 22, PAM and active carbon is added in reaction tank 22, instead
After answering 3h, into final deposition pool 23, whole hypostasis and water outlet are obtained after hydraulic retention 2d, whole hypostasis is delivered to collection mud sump 24, is discharged defeated
It send to discharge pond 12；
(4) collect the dross in mud sump 24, sediment, sludge, two hypostasis and whole hypostasis to obtain after folded spiral shell dewaterer 25 is dehydrated
The over dry sludge for being 75%-85% to water content, the water sloughed are delivered to conditioning tank 1, the water conveying that sludge concentrator 27 obtains
To conditioning tank 1.
It further include step (5)：Accident waste water is delivered to accident pool 18, after hydraulic retention 2d, into conditioning tank 1.
It further include step (6)：Accident pool 18, conditioning tank 1, reaction flotation tank 2, hydrolysis acidification pool 3, hydrolytic precipitation pool 4, in
Between after the exhaust gas that generates in pond 5, preposition anoxic pond 7, aerobic tank 8 and postposition anoxic pond 9 handles through emission-control equipment 19
Discharge.
In step (1), liquid alkaline is the sodium hydrate aqueous solution that mass percentage concentration is 32%, and the additive amount of liquid alkaline is often to stand
2.5kg is added in Fang meter Shui, the additive amount of PAC is that 0.2kg is added in every cubic meter of water, and the additive amount of PAM is every cubic meter of water
Middle addition 0.007kg, nutritional agents are glucose, and the additive amount of nutritional agents is to add 0.2kg in every cubic meter of water.
In step (2), the liquid alkaline in intermediate pool and aerobic tank is the sodium hydroxide water that mass percentage concentration is 32%
Solution, the additive amount of liquid alkaline are to add 2.8g in every cubic meter of water.
In step (2), organic carbon source is methanol, and organic carbon source additive amount is to add 0.08kg in every cubic meter of water.
In step (3), the additive amount of active carbon is to add 0.2kg in every cubic meter of water in reaction tank, and the additive amount of PAM is
0.006kg is added in every cubic meter of water.
Through measuring, the processing system of the present embodiment is as shown in table 1 to the processing result of polyamide waste water：
The processing result of 3 the present embodiment of table
As shown in Table 3, polyamide waste water can achieve GB 31571-2015's after the processing of the treatment process of the present embodiment
The nitrification-denitrification of direct emission standard, the present embodiment is handled to CODCrRemoval rate reach 96.2%, the removal rate of ammonia nitrogen is
99.6%, the removal rate of total nitrogen is 95%, and the treatment process of the present embodiment can remove 99.7% CODCr。
In short, the foregoing is merely presently preferred embodiments of the present invention, it is all according to equalization made by scope of the present invention patent
Variation and modification, shall all be covered by the patent of the invention.
Claims (10)
1. polyamide waste water treatment system, it is characterised in that：Including cooling tower (11), the conditioning tank (1), reaction gas being sequentially communicated
Floating pond (2), hydrolysis acidification pool (3), hydrolytic precipitation pool (4), intermediate pool (5), up-flow anaerobic sludge blanket (6), preposition anoxic
Pond (7), aerobic tank (8), postposition anoxic pond (9), secondary settling tank (10), reaction tank (22), final deposition pool (23) and discharge pond (12), also
Including the second pump (14), the 4th pump (16) and the 5th pump (17), the outlet of hydrolysis acidification pool (3) and hydrolytic precipitation pool (4) into
Mouth connection, the outlet of hydrolytic precipitation pool (4) also passes through the inlet communication of the second pump (14) Yu hydrolysis acidification pool (3), preposition anoxic
The outlet in pond (7) and the inlet communication of aerobic tank (8), the outlet of aerobic tank (8) also pass through the 4th pump (16) and preposition anoxic pond
(7) it is connected to, the outlet of secondary settling tank (10) also passes through the inlet communication of the 5th pump (17) and aerobic tank (8)；It further include collection mud sump
(24), spiral shell dewaterer (25) and sludge concentration tank (27) are folded, sludge concentration tank (27) is connected to collection mud sump (24), is collected mud sump (24)
Be connected to folded spiral shell dewaterer (25), reaction flotation tank (2), hydrolytic precipitation pool (4) and final deposition pool (23) respectively with collect mud sump (24)
Connection, conditioning tank (1), up-flow anaerobic sludge blanket (6), preposition anoxic pond (7) and secondary settling tank (10) respectively with sludge concentration tank
(27) it is connected to, folded spiral shell dewaterer (25) are also connected to conditioning tank (1).
2. polyamide waste water treatment system according to claim 1, it is characterised in that：It further include accident pool (18), accident
Pond (18) is connected to conditioning tank (1).
3. polyamide waste water treatment system according to claim 2, it is characterised in that：It further include emission-control equipment
(19), accident pool (18), conditioning tank (1), reaction flotation tank (2), hydrolysis acidification pool (3), hydrolytic precipitation pool (4), intermediate pool
(5), preposition anoxic pond (7), aerobic tank (8) and postposition anoxic pond (9) are connected to emission-control equipment (19) respectively.
4. the polyamide waste water treatment process based on polyamide waste water treatment system as claimed in claim 3, which is characterized in that packet
Include following steps：
(1) polyamide waste water enters conditioning tank (1) after cooling tower (11) is cooled to 40-60 DEG C, is stirred continuously, hydraulic retention 2-
After 4d, the polyamide waste water after adjusting enters reaction flotation tank (2), be added in reaction flotation tank (2) liquid alkaline, PAC and PAM and
Nutritional agents generates dross and waste water after reacting 6-10h, and dross is delivered to collection mud sump (24), and waste water is handled through hydrolysis acidification pool (3)
It being delivered to after 45-50h hydrolytic precipitation pool (4), generates sediment and the first filtrate, sediment, which is delivered to, collects mud sump (24), and first
After filtrate is delivered to hydrolysis acidification pool (3), intermediate pool (5) are delivered to using hydrolytic precipitation pool (4)；
(2) be added liquid alkaline in intermediate pool (5), the first filtrate obtained after intermediate pool handles 0.5-1.5h in water, middle water exists
Sludge and the second filtrate are obtained after reaction 3-4d in up-flow anaerobic sludge blanket (6), sludge is after sludge concentration tank (27) are concentrated
It is transported to collection mud sump (24), to preposition anoxic pond (7), the second filtrate is delivered to preposition the sludge reflux in sludge concentration tank (27)
It in anoxic pond (7), is stirred continuously, after anti-nitre 75-80h, into aerobic tank (8), aerobic tank is passed through air and liquid alkaline, nitre in (8)
Change 130-140h, sludge is delivered in preposition anoxic pond (7), and waste water is delivered to postposition anoxic pond (9), in postposition anoxic pond (9)
Organic carbon source is added, after denitrification 20-30h, waste water enters secondary settling tank (10)；
(3) two hypostasis and third filtrate are obtained after hydraulic retention 1-3d in secondary settling tank (10), two hypostasis are delivered to sludge condensation
It is being delivered to collection mud sump (24) after the concentration of pond (27), third filtrate enters reaction tank (22), and PAM and work are added in reaction tank (22)
Property charcoal, react 1-3h after, into final deposition pool (23), whole hypostasis and water outlet are obtained after hydraulic retention 1-2d, whole hypostasis is delivered to collection
Mud sump (24), water outlet are delivered to discharge pond (12)；
(4) collect the dross in mud sump (24), sediment, sludge, two hypostasis and whole hypostasis to obtain after folded spiral shell dewaterer (25) dehydration
The over dry sludge for being 75%-85% to water content, the water sloughed are delivered to conditioning tank (1), the water that sludge concentrator (27) obtains
It is delivered to conditioning tank (1).
5. polyamide waste water treatment process according to claim 4, it is characterised in that：It further include step (5)：Accident waste water
It is delivered to accident pool (18), after hydraulic retention 1-2d, into conditioning tank (1).
6. polyamide waste water treatment process according to claim 5, it is characterised in that：It further include step (6)：Accident pool
(18), conditioning tank (1), reaction flotation tank (2), hydrolysis acidification pool (3), hydrolytic precipitation pool (4), intermediate pool (5), preposition anoxic
The exhaust gas generated in pond (7), aerobic tank (8) and postposition anoxic pond (9) discharges after emission-control equipment (19) processing.
7. polyamide waste water treatment process according to claim 4, it is characterised in that：In step (1), liquid alkaline is quality hundred
Dividing concentration is the sodium hydrate aqueous solution of 30-32%, and the additive amount of liquid alkaline is to add 2.0-2.5kg in every cubic meter of water, PAC's
Additive amount is that 0.1-0.2kg is added in every cubic meter of water, and the additive amount of PAM is to add 0.003-0.007kg in every cubic meter of water,
Nutritional agents is glucose, and the additive amount of nutritional agents is to add 0.1-0.2kg in every cubic meter of water.
8. polyamide waste water treatment process according to claim 4, it is characterised in that：In step (2), intermediate pool is become reconciled
Liquid alkaline in oxygen pond is the sodium hydrate aqueous solution that mass percentage concentration is 30-32%, and the additive amount of liquid alkaline is every cubic metre
2.0-2.8g is added in water.
9. polyamide waste water treatment process according to claim 4, it is characterised in that：In step (2), organic carbon source is first
Alcohol, organic carbon source additive amount are to add 0.04-0.08kg in every cubic meter of water.
10. polyamide waste water treatment process according to claim 4, it is characterised in that：It is living in reaction tank in step (3)
Property charcoal additive amount be to add 0.1-0.2kg in every cubic meter of water, the additive amount of PAM is to add 0.004- in every cubic meter of water
0.006kg。
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