CN106865919A - A kind of processing method of Nicarbazin industrial production middle and high concentration waste water - Google Patents
A kind of processing method of Nicarbazin industrial production middle and high concentration waste water Download PDFInfo
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- CN106865919A CN106865919A CN201710253383.7A CN201710253383A CN106865919A CN 106865919 A CN106865919 A CN 106865919A CN 201710253383 A CN201710253383 A CN 201710253383A CN 106865919 A CN106865919 A CN 106865919A
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- waste water
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- hydrolysis
- nicarbazin
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2866—Particular arrangements for anaerobic reactors
-
- 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
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention provides a kind of processing method of Nicarbazin industrial production middle and high concentration waste water, comprise the following steps：(1) high-concentration waste water enters water leg, and PH is adjusted to 34 with the concentrated sulfuric acid, enters back into oxidation processes in catalysis oxidizing tower；(2) waste water obtained by step (1) is entered into regulating reservoir to be mixed together with sanitary wastewater and low concentration wastewater, behind neutralized pond and liquid caustic soda treatment, adds flocculant PAM, into primary clarifier precipitation, supernatant effluent enters next step；(3) supernatant effluent enters hydrolysis（Acidifying）Pond, is dissolved organic matter by insoluble hydrolysis of organic matter, and the macromolecular substances of difficult for biological degradation are converted into the small-molecule substance of easily biological-degradable；(4) waste water after hydrolysis acidification is entered into A/O techniques, realizes sewage harmless treatment.Processing method provided by the present invention, can process high-concentration waste water, and chemical substance treatment is added without extra, and processing method environmental protection, treatment effeciency is high, and effect is good.
Description
Technical field
The invention belongs to technical field of sewage, and in particular to a kind of Nicarbazin industrial production middle and high concentration waste water
Processing method.
Background technology
Nicarbazin is '-dinitrosym-diphenylurea and HDP compound.It is yellow or yellow greenish powder；Nothing
It is smelly, slightly have peculiar smell.This product slightly soluble in dimethylformamide, it is insoluble in water, ethanol, ethyl acetate, chloroform, ether.Buddhist nun blocks
Bar piperazine is to produce Anti-human globulin test by suppressing the asexual schizogamy of coccidia, to the Peak Activity of coccidia in second generation schizont
(i.e. the 4th day of coccidia life cycle), anticoccidial effect is good.
Produce substantial amounts of high-concentration waste water in Nicarbazin production process, waste water be mainly derived from centrifugation, cleaning container,
The workshop sections such as cleaning, waste strength is high, and containing substantial amounts of macromolecule organic, CODCr is up to 10000mg/L or so, NH3-N
10mg/L, TN 100mg/L, B/C ratio are very low, and biodegradability difference is difficult to biodegradation.Often producing 1 ton of Nicarbazin can produce 5 tons
Waste water, amounts to 10000 tons or so waste water every year, and these waste water are directly discharged into environment and will cause significant impact to environment.
The content of the invention
In order to solve the above problems, the invention provides a kind of processing method of Nicarbazin industry high-concentration waste water.Side
Method is pre-processed using Wet Catalytic Oxidation Method to high-concentration sewage, by hydrolysis acidification, A/O techniques after neutralization precipitation.
Nicarbazin high concentration production waste water COD Cr 10000mg/L of the present invention or so, NH3-N10mg/L, TN
120mg/L。
The technical proposal for solving the technical problem of the invention is：
A kind of processing method of Nicarbazin industrial production middle and high concentration waste water, including step in detail below：
(1) pre-process：High-concentration waste water enters water leg, and PH to 3-4 is adjusted with the concentrated sulfuric acid, with elevator pump by acid waste water
Squeeze into catalysis oxidizing tower, and to the hydrogen peroxide of 2%V/V is added in catalysis oxidizing tower, stop 2-3 hours；
Waste water reacts in catalysis oxidizing tower.Catalytic wet oxidation reaction principally falls into radical reaction, generally divides
It is the initiation of chain, the transmission of chain and these three stages of end stopping of chain：
(1) initiation of chain is in the presence of oxygen, by thermal dissociation, induces initial free radical, or by hydrogen peroxide in urging
Agent direct effect produces hydroxyl radical free radical, reacts as follows：
RH+O2→ R+ROO (HTHP)
H2O2+ M → 2OH (M is catalyst)
(2) alternation procedure that the transmission free radical molecule of chain interacts, this process is easily carried out very much.
RH+·OH→R·+H2O；
R·+O2→ROO·；
ROO·+RH→ROOH+R·
(3) end stopping of chain free radical mutually collides the molecule of generation stabilization, makes the disconnecting of chain.
R·+R·→R-R；
ROO·+R·→ROOR；
ROO·+ROO·→ROH+RCOR2+O2
In wet oxidation reaction, larger molecular organicses and unstable intermediate compound (being referred to as A) are oxidized degraded, raw
Into the intermediate product B of stabilization, then it is oxidized to final product C.This process can be expressed as
A-+O2→B
B+O2→C
Waste water is about 5000mg/L, COD clearances 50% or so by water outlet COD after catalysis oxidizing tower.
(2) waste water obtained by step (1) is entered into regulating reservoir to be mixed together with sanitary wastewater and low concentration wastewater, is adjusted
COD≤3000mg/L, neutralization pond is extracted into elevator pump by composite waste, adds liquid caustic soda NaOH regulation PH to 8-8.5, is stopped
30min, addition flocculant PAM forms floccule precipitation, is precipitated into primary clarifier and produces within 3 hours upper strata waste water and once dirt
Mud, primary sludge enters sludge concentration tank, and supernatant effluent enters next step；
(3) supernatant effluent obtained by step (2) is entered into hydrolysis (acidifying) pond, is made in a large amount of hydrolytic bacterias, acidifying bacterium
With it is lower be dissolved organic matter by insoluble hydrolysis of organic matter, the macromolecular substances of difficult for biological degradation are converted into easily biological-degradable
Small-molecule substance.
Hydrolysis (acidifying) processing method is a kind of between method aerobic and between Anaerobic Treatment method, and other process combinations
Comparing can reduce processing cost raising treatment effeciency.Hydrolysis acidification technique is according to methanogen and the hydrolysis acid-producing bacteria speed of growth
Difference, by Anaerobic Treatment control in shorter stage of Anaerobic Treatment first and second in reaction time, i.e., in a large amount of hydrolytic bacterias, acid
Change bacterium effect under by insoluble hydrolysis of organic matter be dissolved organic matter, the macromolecular substances of difficult for biological degradation are converted into easy life
The process of the small-molecule substance of thing degraded, is that subsequent treatment establishes good basis so as to improve the biodegradability of waste water.Waste water enters
Water outlet COD is about 500-1000mg/L afterwards to enter hydrolysis acidification pool (), and ammonia nitrogen is about 20mg/L, and total nitrogen is about 50mg/L.Into
Water outlet is about 300-500mg/L to hydrolysis acidification pool (two) afterwards, and ammonia nitrogen is about 10mg/L, and total nitrogen is about 40mg/L.
(4) waste water after step (3) gained hydrolysis acidification is entered into A/O techniques, A/O techniques are divided into 2 units, respectively
Anoxic pond, Aerobic Pond, heterotroph in anoxic pond is by suspended contaminants such as the starch in sewage, fiber, carbohydrate and can
Soluble organism is hydrolyzed to organic acid, larger molecular organicses is decomposed into small organic molecule, and insoluble organic matter is changed into
Dissolved organic matter, when these carry out Aerobic Process for Treatment through the product of anaerobic hydrolysis into Aerobic Pond, improves the biochemical of sewage
Property, improve the efficiency of oxygen；Protein, fat contamination are carried out ammonification by the heterotroph in anoxic pond, and dissociate ammonia, and autotrophic bacterium will
Free NH3And/or NH4+It is oxidized to NO3-, then the control that flows back is back to A ponds, and under anoxic conditions, the denitrification of heterotrophic bacteria
By NO3-It is reduced to molecular state N2, so as to complete the circulation of C, N, O in ecology, realize sewage harmless treatment.Waste water enters A/
Water outlet COD about 100-200mg/L after O systems, ammonia nitrogen 2mg/L, total nitrogen 25mg/L.
Preferably, CODCr >=the 10000mg/L of the high-concentration waste water described in step (1), the catalysis oxidizing tower
Filler is the special discus of sewage disposal.
Preferably, the consumption of the PAM described in step (2) is 0.01kg/ tons of composite waste.
Preferably, setting perforated pipe aerating regulation and combined stuffing, described sewage in hydrolysis acidification pool described in step (3)
72 hours residence times are designed in pond, and intermediate sedimentation pond, intermediate sedimentation pond design surface hydraulic load are set after hydrolysis acidification pool
0.7m3/m2H, residence time 3h, and sludge reflux pump is configured intermediate sedimentation pond sludge reflux to hydrolytic tank and sludge condensation
Pond.
Preferably, the dissolved oxygen in anoxic tank described in step (3) is not more than 0.2mg/L, aerobic section dissolved oxygen is 2-
4mg/L。
Beneficial effects of the present invention are：
1st, the processing method of Nicarbazin industrial production middle and high concentration waste water provided by the present invention, can process high concentration
Waste water, chemical substance treatment is added without extra, and processing method environmental protection, treatment effeciency is high, and effect is good.Through of the present invention
COD is 100-200mg/L in the treated waste water of method, and ammonia nitrogen is 2mg/L, and total nitrogen is 25mg/L.
2nd, processing method provided by the present invention is easy to operate, can continuously produce, high degree of automation, is adapted to industry metaplasia
Produce.
Brief description of the drawings
Fig. 1 is the process chart of Nicarbazin industrial production middle and high concentration waste water.
Specific embodiment
It is explained further the present invention with reference to embodiments, but embodiment does not do any type of limit to the present invention
It is fixed.
Embodiment 1
A kind of processing method of Nicarbazin industrial production middle and high concentration waste water, including step in detail below：
(1) pre-process：The waste water of concentration C ODCr >=10000mg/L is entered into water leg, PH is adjusted to 3-4 with the concentrated sulfuric acid,
Acid waste water is squeezed into catalysis oxidizing tower with elevator pump, and to the hydrogen peroxide of 2%V/V is added in catalysis oxidizing tower, is stopped
2-3 hours；The filler of the catalysis oxidizing tower is the special discus of sewage disposal；
(2) waste water obtained by step (1) is entered into regulating reservoir to be mixed together with sanitary wastewater and low concentration wastewater, is adjusted
COD≤3000mg/L, neutralization pond is extracted into elevator pump by composite waste, adds liquid caustic soda NaOH regulation PH to 8-8.5, is stopped
30min, addition flocculant PAM forms floccule precipitation, is precipitated into primary clarifier and produces within 3 hours upper strata waste water and once dirt
Mud, primary sludge enters sludge concentration tank, and supernatant effluent enters next step；The consumption of described PAM is 0.01kg/ tons to be mixed
Close waste water；
(3) supernatant effluent obtained by step (2) is entered into hydrolysis (acidifying) pond, is made in a large amount of hydrolytic bacterias, acidifying bacterium
With it is lower be dissolved organic matter by insoluble hydrolysis of organic matter, the macromolecular substances of difficult for biological degradation are converted into easily biological-degradable
Small-molecule substance；
(4) waste water after step (3) gained hydrolysis acidification is entered into A/O techniques, A/O techniques are divided into 2 units, respectively
Anoxic pond, Aerobic Pond, heterotroph in anoxic pond is by suspended contaminants such as the starch in sewage, fiber, carbohydrate and can
Soluble organism is hydrolyzed to organic acid, larger molecular organicses is decomposed into small organic molecule, and insoluble organic matter is changed into
Dissolved organic matter, when these carry out Aerobic Process for Treatment through the product of anaerobic hydrolysis into Aerobic Pond, improves the biochemical of sewage
Property, improve the efficiency of oxygen；Protein, fat contamination are carried out ammonification by the heterotroph in anoxic pond, and dissociate ammonia, and autotrophic bacterium will
Free NH3And/or NH4+It is oxidized to NO3-, then the control that flows back is back to A ponds, and under anoxic conditions, the denitrification of heterotrophic bacteria
By NO3-It is reduced to molecular state N2, so as to complete the circulation of C, N, O in ecology, realize sewage harmless treatment.
Perforated pipe aerating regulation and combined stuffing are set in hydrolysis acidification pool described in step (3), described cesspool design stops
Stay the time 72 hours, set intermediate sedimentation pond after hydrolysis acidification pool, intermediate sedimentation pond design surface hydraulic load 0.7m3/m2H, stops
Time 3h is stayed, and configures sludge reflux pump intermediate sedimentation pond sludge reflux to hydrolytic tank and sludge concentration tank；Institute in step (3)
The dissolved oxygen in anoxic tank stated no more than 0.2mg/L, aerobic section dissolved oxygen is 2-4mg/L.
COD is 162mg/L in processed waste water, and ammonia nitrogen is 2mg/L, and total nitrogen is 25mg/L.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (5)
1. a kind of processing method of Nicarbazin industrial production middle and high concentration waste water, it is characterised in that including step in detail below：
(1) pre-process：High-concentration waste water enters water leg, and PH to 3-4 is adjusted with the concentrated sulfuric acid, is beaten acid waste water with elevator pump
In entering catalysis oxidizing tower, and to the hydrogen peroxide of 2%V/V is added in catalysis oxidizing tower, stop 2-3 hours；
(2) waste water obtained by step (1) is entered into regulating reservoir to be mixed together with sanitary wastewater and low concentration wastewater, regulation COD≤
3000mg/L, neutralization pond is extracted into elevator pump by composite waste, adds liquid caustic soda NaOH regulation PH to 8-8.5, stops 30min, plus
Enter flocculant PAM and form floccule precipitation, precipitated 3 hours into primary clarifier and produce upper strata waste water and primary sludge, once
Sludge enters sludge concentration tank, and supernatant effluent enters next step；
(3) supernatant effluent obtained by step (2) is entered into hydrolysis（Acidifying）Pond, under a large amount of hydrolytic bacterias, acidifying bacterium effect
It is dissolved organic matter by insoluble hydrolysis of organic matter, the macromolecular substances of difficult for biological degradation is converted into the small of easily biological-degradable
Molecular substance；
(4) waste water after step (3) gained hydrolysis acidification is entered into A/O techniques, A/O techniques are divided into 2 units, respectively lack
Oxygen pond, Aerobic Pond, heterotroph in anoxic pond is by suspended contaminants such as the starch in sewage, fiber, carbohydrate and solvable
Property hydrolysis of organic matter be organic acid, larger molecular organicses is decomposed into small organic molecule, insoluble organic matter is changed into can
Soluble organism, when these carry out Aerobic Process for Treatment through the product of anaerobic hydrolysis into Aerobic Pond, improves the biodegradability of sewage,
Improve the efficiency of oxygen；Protein, fat contamination are carried out ammonification by the heterotroph in anoxic pond, and dissociate ammonia, and autotrophic bacterium will swim
From NH3And/or NH4+It is oxidized to NO3-, then the control that flows back is back to A ponds, under anoxic conditions, the denitrification of heterotrophic bacteria will
NO3-It is reduced to molecular state N2, so as to complete the circulation of C, N, O in ecology, realize sewage harmless treatment.
2. the processing method of Nicarbazin industrial production middle and high concentration waste water as claimed in claim 1, it is characterised in that step
(1) CODCr >=10000mg/L of the high-concentration waste water described in, the filler of the catalysis oxidizing tower is sewage disposal Special iron
Cake.
3. the processing method of Nicarbazin industrial production middle and high concentration waste water as claimed in claim 1, it is characterised in that step
(2) consumption of the PAM described in is 0.01 kg/ tons of composite waste.
4. the processing method of Nicarbazin industrial production middle and high concentration waste water as claimed in claim 1, it is characterised in that step
(3) perforated pipe aerating regulation and combined stuffing are set in the hydrolysis acidification pool described in, described cesspool designs 72 hours residence times,
Set intermediate sedimentation pond after hydrolysis acidification pool, intermediate sedimentation pond design surface hydraulic load 0.7m3/m2H, residence time 3h, and match somebody with somebody
Sludge reflux pump is put intermediate sedimentation pond sludge reflux to hydrolytic tank and sludge concentration tank.
5. the processing method of Nicarbazin industrial production middle and high concentration waste water as claimed in claim 1, it is characterised in that step
(3) dissolved oxygen in anoxic tank described in is not more than 0.2mg/L, and aerobic section dissolved oxygen is 2-4mg/L.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108083566A (en) * | 2017-12-18 | 2018-05-29 | 深圳市美宜佳机电设备有限公司 | A kind of High-concentration organic wastewater treatment method |
| CN108178440A (en) * | 2017-12-29 | 2018-06-19 | 广西博世科环保科技股份有限公司 | Laboratory waste water treatment method and its processing equipment |
| CN108178431A (en) * | 2017-12-27 | 2018-06-19 | 杭州司迈特水处理工程有限公司 | A kind of processing system and processing method for preparing ultrafiltration membrane filature wastewater |
| CN112010494A (en) * | 2019-10-29 | 2020-12-01 | 沈阳化工研究院设计工程有限公司 | Method for treating wastewater generated by synthesizing para-ester by mercaptoethanol method |
| CN115925205A (en) * | 2023-02-27 | 2023-04-07 | 山东天大泰泽环保科技有限公司 | TDI production wastewater treatment system and technology |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108083566A (en) * | 2017-12-18 | 2018-05-29 | 深圳市美宜佳机电设备有限公司 | A kind of High-concentration organic wastewater treatment method |
| CN108178431A (en) * | 2017-12-27 | 2018-06-19 | 杭州司迈特水处理工程有限公司 | A kind of processing system and processing method for preparing ultrafiltration membrane filature wastewater |
| CN108178440A (en) * | 2017-12-29 | 2018-06-19 | 广西博世科环保科技股份有限公司 | Laboratory waste water treatment method and its processing equipment |
| CN112010494A (en) * | 2019-10-29 | 2020-12-01 | 沈阳化工研究院设计工程有限公司 | Method for treating wastewater generated by synthesizing para-ester by mercaptoethanol method |
| CN112010494B (en) * | 2019-10-29 | 2022-06-28 | 中化环境科技工程有限公司 | Method for treating wastewater generated by synthesizing para-ester by mercaptoethanol method |
| CN115925205A (en) * | 2023-02-27 | 2023-04-07 | 山东天大泰泽环保科技有限公司 | TDI production wastewater treatment system and technology |
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