CN106477756A - A kind of coal chemical industrial waste water removes method for removing ammonia nitrogen - Google Patents
A kind of coal chemical industrial waste water removes method for removing ammonia nitrogen Download PDFInfo
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- CN106477756A CN106477756A CN201510532316.XA CN201510532316A CN106477756A CN 106477756 A CN106477756 A CN 106477756A CN 201510532316 A CN201510532316 A CN 201510532316A CN 106477756 A CN106477756 A CN 106477756A
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Abstract
The invention provides a kind of coal chemical industrial waste water removes method for removing ammonia nitrogen, including step：(1) mix with oxygen propanedione for 10: 1 fourth amylalcohol in mass ratio, be added in coking chemical waste water with the amount of 55～75ppm, be simultaneously introduced the starch of 30～70mg/L；(2) supersaturation CO2 gas is filled with waste water with pressuring method after pump, then through decompression release；(3) dissolubility zinc salt and aluminate, Zn2+: AlO2-: NH4+ mol ratio 2.5～3.0: 2.0～2.2 of addition are added in the waste water that discharges：3.0～3.2；(4) it is 7.5～10.0 to adjust pH value of waste water with alkali, is stirred continuously, and produces White Flocculus precipitation.The invention has the beneficial effects as follows (1) the inventive method utilizes the hydrogen bond between highly polar organic destruction ammonium ion and hydrone, and large Π bond is formed with ammonium ion, so that ammonium ion is separated with hydrone；(2) heavy metal solution is introduced, the phenomenon of adsorption precipitation occurs with ammonium ion, solid particulate matter has been obtained, sludge quantity is reduced.
Description
Technical field
The present invention relates to a kind of coal chemical industrial waste water removes method for removing ammonia nitrogen.
Background technology
Coal chemical industrial waste water based on high-concentration coal washes, containing a large amount of phenol, cyanogen, oil, ammonia nitrogen etc.
Poisonous and harmful substances, the ammonia nitrogen in comprehensive wastewater in 10000mg/L～20000mg/L, mostly with
Ammonium ion (NH4+) and free ammonia (NH3) keep the state of balance and exist.Big with discharge capacity, dirty
Dye scope is wide, and discharging modes are complicated, pollutant kind is various, polluter strong toxicity, pollutant row
The features such as recovering relatively difficult after putting.
Ammonium ion in waste water is with water in the presence of hydrogen bond, it is difficult to separate, so general to waste water
In ammonia nitrogen typically use the precipitation method, chemical method or Biochemical method.The traditional chemical precipitation method except ammonium root from
Son, is to add magnesium ion, and phosphate anion generates magnesium ammonium phosphate sediment with ammonium ion reaction, needs
Add magnesium salts and phosphate ion, due to there are other ions in waste water, which reduce direct reaction from
Sub- magnesium ion, phosphate anion and the collision probability of ammonium ion, produce microscopic precipitate particle quasi-equilibrium
Phenomenon, causes apparent solubilty product to be much higher than true solubility product, in order to reach the formation of calcium phosphate precipitation
Condition, needs the precipitation by metallic ion agent concentration for adding commonly greater than 1-2 quantity of normal solubility product
Level, therefore, medicament is costly, thereby results in that remaining metal ions concentration is also higher, exceeded magnesium
Ion concentration may also can give birth to chronic toxic action to bio, while being also required to add more than chemistry meter
The phosphate ion of amount molal quantity, due to react insufficient thoroughly, can so cause to increase in waste water another
Plant new pollutant, i.e. phosphorus；And occur, during raw precipitation, ion eutectoid phenomenon to occur, molten in waste water
Other ions of solution can also be co-precipitated out, can so cause sludge quantity big, cause the ammonium phosphate of generation
Content of magnesium is low, and moisture content is high, and sludge can not be recycled, and become noxious waste pollution thing.And change
Learning ammonia nitrogen in removing waste water needs to introduce a large amount of chemical agents, not only costly, also there is secondary pollution
Risk.And processing ammonia nitrogen waste water with microbial method then needs strictly to control required for growth of microorganism
Condition, while microorganism effect when high-concentration ammonia nitrogenous wastewater is processed is bad, clearance is difficult to reach state
Family's discharge standard.
Based on sustainable development idea, in terms of high-concentration ammonia nitrogenous wastewater process, to not only pursue efficiently
The target of comprehensive ecological improvement of denitrogenation, the ring for will also pursue energy-saving consumption, avoiding secondary pollution etc. higher level
Border economic benefit target, is only and administers the more satisfactory technological development direction of high-concentration ammonia nitrogenous wastewater.
Content of the invention
In order to solve the problems of the prior art, the invention provides a kind of coal chemical industrial waste water removes ammonia nitrogen
Method, processes the ammonia nitrogen in coal chemical industrial waste water with this method, and the mud granule for obtaining is solid, water content
Less and purity is high, the fields such as fertilizer can be applied to.
The invention provides a kind of coal chemical industrial waste water removes method for removing ammonia nitrogen, including step：
(1) mix with oxygen propanedione for 10: 1 fourth amylalcohol in mass ratio, thrown with the amount of 55～75ppm
It is added in coking chemical waste water, is simultaneously introduced the starch of 30～70mg/L；
(2) supersaturation CO2 gas is filled with waste water with pressuring method after pump, then through decompression release；
(3) dissolubility zinc salt and aluminate are added in the waste water that discharges, Zn2+: A l O2- of addition:
NH4+ mol ratio 2.5～3.0: 2.0～2.2：3.0～3.2；
(4) it is 7.5～10.0 to adjust pH value of waste water with alkali, is stirred continuously, and produces White Flocculus and sinks
Form sediment.
As a further improvement on the present invention, in the coal chemical industrial waste water ammonia-nitrogen content be 10000～
20000mg/L.
As a further improvement on the present invention, mix for 10: 1 fourth amylalcohol and oxygen propanedione in mass ratio
Close, be added in coking chemical waste water with the amount of 55ppm, be simultaneously introduced the starch of 30mg/L；Add
Zn2+∶Al O2 -∶NH4 +Mol ratio 2.5: 2.0：3.0；It is 7.5 pH value of waste water to be adjusted with alkali.
As a further improvement on the present invention, mix for 10: 1 fourth amylalcohol and oxygen propanedione in mass ratio
Close, be added in coking chemical waste water with the amount of 75ppm, be simultaneously introduced the starch of 70mg/L；Add
Zn2+∶Al O2 -∶NH4 +Mol ratio 3.0: 2.2：3.2；It is 10.0 pH value of waste water to be adjusted with alkali.
The invention has the beneficial effects as follows：(1) the inventive method utilizes highly polar organic destruction ammonium ion
Hydrogen bond between hydrone, and large Π bond is formed with ammonium ion, so that ammonium ion is divided with hydrone
From；(2) heavy metal solution is introduced, the phenomenon of adsorption precipitation occurs with ammonium ion, has obtained solid
Particulate matter, sludge quantity are reduced.
Specific embodiment
The invention discloses a kind of coal chemical industrial waste water removes method for removing ammonia nitrogen, including step：
(1) mix with oxygen propanedione for 10: 1 fourth amylalcohol in mass ratio, thrown with the amount of 55～75ppm
It is added in coking chemical waste water, is simultaneously introduced the starch of 30～70mg/L；
(2) supersaturation CO2 gas is filled with waste water with pressuring method after pump, then through decompression release；
(3) addition dissolubility zinc salt and aluminate in the waste water that discharges, Zn2+: AlO2- of addition:
NH4+ mol ratio 2.5～3.0: 2.0～2.2：3.0～3.2；
(4) it is 7.5～10.0 to adjust pH value of waste water with alkali, is stirred continuously, and produces White Flocculus and sinks
Form sediment.
As a further improvement on the present invention, in the coal chemical industrial waste water ammonia-nitrogen content be 10000～
20000mg/L.
As a further improvement on the present invention, mix for 10: 1 fourth amylalcohol and oxygen propanedione in mass ratio
Close, be added in coking chemical waste water with the amount of 55ppm, be simultaneously introduced the starch of 30mg/L；Add
Zn2+∶AlO2 -∶NH4 +Mol ratio 2.5: 2.0：3.0；It is 7.5 pH value of waste water to be adjusted with alkali.
As a further improvement on the present invention, mix for 10: 1 fourth amylalcohol and oxygen propanedione in mass ratio
Close, be added in coking chemical waste water with the amount of 75ppm, be simultaneously introduced the starch of 70mg/L；Add
Zn2+∶AlO2 -∶NH4 +Mol ratio 3.0: 2.2：3.2；It is 10.0 pH value of waste water to be adjusted with alkali.
The present invention utilizes the hydrogen bond between highly polar organic destruction ammonium ion and hydrone, and and ammonium
Radical ion forms large Π bond, then passes through and is passed through CO2, produces a large amount of micro-bubbles, adheres to organic
On thing suspended particulate, after decompression, climb up on top of the water on, the preliminary ammonia nitrogen removed in waste water, then
Deliquescent metal salt is added in waste water, the phenomenon of adsorption precipitation occurs with ammonium ion, finally makes to give up
Ammonia nitrogen concentration in water is less than 5mg/L.
Above content is made for the present invention further specifically with reference to specific preferred embodiment
Bright, it is impossible to assert the present invention be embodied as be confined to these explanations.For the affiliated technology of the present invention
For the those of ordinary skill in field, without departing from the inventive concept of the premise, if can also make
Simple deduction or replace are done, should all be considered as belonging to protection scope of the present invention.
Claims (4)
1. a kind of coal chemical industrial waste water removes method for removing ammonia nitrogen, it is characterised in that：Including step：
(1) mix with oxygen propanedione for 10: 1 fourth amylalcohol in mass ratio, thrown with the amount of 55～75ppm
It is added in coking chemical waste water, is simultaneously introduced the starch of 30～70mg/L；
(2) supersaturation CO is filled with waste water with pressuring method after pump2Gas, then through decompression release；
(3) dissolubility zinc salt and aluminate, the Zn of addition are added in the waste water that discharges2+∶AlO2 -∶
NH4 +Mol ratio 2.5～3.0: 2.0～2.2：3.0～3.2；
(4) it is 7.5～10.0 to adjust pH value of waste water with alkali, is stirred continuously, and produces White Flocculus precipitation.
2. coal chemical industrial waste water according to claim 1 removes method for removing ammonia nitrogen, it is characterised in that：The coal
In wastewater from chemical industry, ammonia-nitrogen content is 10000～20000mg/L.
3. coal chemical industrial waste water according to claim 1 removes method for removing ammonia nitrogen, it is characterised in that：By quality
Mix with oxygen propanedione than the fourth amylalcohol for 10: 1, be added in coking chemical waste water with the amount of 55ppm,
It is simultaneously introduced the starch of 30mg/L；The Zn of addition2+∶AlO2 -∶NH4 +Mol ratio 2.5: 2.0：
3.0；It is 7.5 pH value of waste water to be adjusted with alkali.
4. coal chemical industrial waste water according to claim 1 removes method for removing ammonia nitrogen, it is characterised in that：By quality
Mix with oxygen propanedione than the fourth amylalcohol for 10: 1, be added in coking chemical waste water with the amount of 75ppm,
It is simultaneously introduced the starch of 70mg/L；The Zn of addition2+∶AlO2 -∶NH4 +Mol ratio 3.0: 2.2：
3.2；It is 10.0 pH value of waste water to be adjusted with alkali.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510532316.XA CN106477756A (en) | 2015-08-26 | 2015-08-26 | A kind of coal chemical industrial waste water removes method for removing ammonia nitrogen |
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| CN201510532316.XA CN106477756A (en) | 2015-08-26 | 2015-08-26 | A kind of coal chemical industrial waste water removes method for removing ammonia nitrogen |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101503267A (en) * | 2009-03-13 | 2009-08-12 | 哈尔滨工业大学 | Coal chemical industry wastewater treating method |
| CN102001789A (en) * | 2010-11-15 | 2011-04-06 | 北京国能普华环保工程技术有限公司 | Process for treating coal chemical waste water |
| CN102774985A (en) * | 2012-07-18 | 2012-11-14 | 常州大学 | Method for treating high-concentration ammonia-nitrogen in coal chemical wastewater |
-
2015
- 2015-08-26 CN CN201510532316.XA patent/CN106477756A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101503267A (en) * | 2009-03-13 | 2009-08-12 | 哈尔滨工业大学 | Coal chemical industry wastewater treating method |
| CN102001789A (en) * | 2010-11-15 | 2011-04-06 | 北京国能普华环保工程技术有限公司 | Process for treating coal chemical waste water |
| CN102774985A (en) * | 2012-07-18 | 2012-11-14 | 常州大学 | Method for treating high-concentration ammonia-nitrogen in coal chemical wastewater |
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Application publication date: 20170308 |
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