CN108715472A - A kind of cleanser and the preparation method and application thereof of processing coking wastewater - Google Patents
A kind of cleanser and the preparation method and application thereof of processing coking wastewater Download PDFInfo
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- CN108715472A CN108715472A CN201810570867.9A CN201810570867A CN108715472A CN 108715472 A CN108715472 A CN 108715472A CN 201810570867 A CN201810570867 A CN 201810570867A CN 108715472 A CN108715472 A CN 108715472A
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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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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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
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/18—Cyanides
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- Inorganic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of cleansers and the preparation method and application thereof of processing coking wastewater, belong to environmental technology field.The cleanser is prepared using magnesium salts, phosphate, alkali tune agent, zeolite powder, aluminium salt, ferrous salt, PAM, flyash and lime as ingredient, and to the high treating effect of coking wastewater, purifying rate is high, overcomes the undesirable disadvantage of the single cleanser clean-up effect of tradition.
Description
Technical field
The present invention relates to a kind of cleansers and the preparation method and application thereof of processing coking wastewater, belong to green technology neck
Domain.
Background technology
Coking wastewater be coking, coal gas in the high temperature retort, purification and by-product recycling process, generate containing volatile phenol,
The industrial wastewater of the heterocyclic compounds such as polycyclic aromatic hydrocarbon and oxygen, sulphur, nitrogen is a kind of high CODcr, high phenol value, high ammonia nitrogen and is difficult place
A kind of industrial organic waste water of reason.There are three its main sources, first, remained ammonia, it is produced in the dry distillation of coal and coal gas cooling
Born waste water, water account for more than half of coking wastewater total amount, are the main sources of coking wastewater；Second is that net in coal gas
Change the waste water generated in the process, such as gas end-cooling water and crude benzol detach water；Third, in the subtractive processes such as tar, crude benzol
And the waste water that other occasions generate.
Coking wastewater is the industrial wastewater containing a large amount of persistent organic pollutants, complicated component, containing a large amount of phenol,
The coking wastewater of the poisonous and harmful substances such as cyanogen, benzene, ammonia nitrogen, discharge beyond standards causes serious pollution to environment.Coking wastewater has
Water quality and quantity change greatly, complicated component, organic matter especially hardly degraded organic substance content height, the features such as ammonia nitrogen concentration is high.
Nitrogenous compound is organic matter large number of in Coking Plant Wastewater and that composition is sufficiently complex.The quinoline that mass spectrograph is made
Quinoline and certain alkyl substituents, are suspected of carcinogen.Aromatic hydrocarbons and aromatic amine etc. equally have many bioactive substances.Phthalandione vinegar
Class is another kind of carcinogen in waste water, and dimethyl phthalate therein, phthalandione di-isooctyl are also that U.S.EPA preferentially detects
Pollutant.In short, the complicated component of coking wastewater, pollutant kind is various, wherein much belonging to the life for having carcinogenic mutagenesis
Active substances, water outlet COD cannot usually reach discharging standards.
Country's coking wastewater is all made of bioanalysis as main body treatment process at present, but since its organic concentration is high, difficult
The various features such as biodegradable, bio-toxicity is big, substance classes are more, ammonia nitrogen concentration height so that merely by after Biochemical method
Waste water be difficult to reach the requirement of discharge standard.Coagulation sedimentation is common preprocess method, existing market in sewage disposal
On coagulant be mainly aluminium system and iron-based flocculating agent, the pretreating effect that cannot be often satisfied with using single coagulant.
Therefore, the technology that is used in compounding of medicament becomes the hot spot of wastewater treatment industry research in recent years, seeks a kind of efficient
Cleanser to wastewater treatment have positive effect.
Invention content
To solve the above-mentioned problems, the present invention provides a kind of cleanser of processing coking wastewater, there is purification well
Effect.
One of the object of the invention is to disclose a kind of cleanser of processing coking wastewater, is prepared by following component：
Magnesium salts, phosphate, alkali tune agent, zeolite powder, aluminium salt, ferrous salt, PAM, flyash and lime.
Preferably, the cleanser is prepared by the ingredient of following parts by weight：
Magnesium salts：20-40 parts, it is preferable that magnesium salts：25-35 parts；
Phosphate：15-35 parts, it is preferable that phosphate：20-30 parts；
Alkali tune agent：10-25 parts, it is preferable that alkali tune agent：15-20 parts；
Zeolite powder：5-20 parts, it is preferable that zeolite powder：10-15 parts；
Aluminium salt：5-25 parts, it is preferable that aluminium salt：10-20 parts；
Ferrous salt：5-25 parts, it is preferable that ferrous salt：10-20 parts；
PAM：3-10 parts, it is preferable that PAM：5-8 parts；
Flyash：5-20 parts, it is preferable that flyash：8-18 parts；
Lime：3-10 parts, it is preferable that lime：5-8 parts；
The wherein described magnesium salts is one kind or combinations thereof in magnesium sulfate, magnesium chloride, magnesium carbonate, it is preferable that the magnesium salts is chlorination
Magnesium；The phosphate is in sodium phosphate, potassium phosphate, disodium hydrogen phosphate, dipotassium hydrogen phosphate, sodium dihydrogen phosphate or potassium dihydrogen phosphate
One kind or combinations thereof, it is preferable that the phosphate is dipotassium hydrogen phosphate；The alkali tune agent is in sodium hydroxide, calcium hydroxide
One kind or combinations thereof, it is preferable that the alkali tune agent is sodium hydroxide；The aluminium salt be aluminum sulfate, one kind in aluminium chloride or its
Combination, it is preferable that the aluminium salt is aluminum sulfate；The ferrous salt is one kind or combinations thereof in ferrous sulfate, frerrous chloride, excellent
Selection of land, the ferrous salt are frerrous chloride；The PAM be cationic-type polyacrylamide or anion and cation polyacrylamide,
Preferably, the PAM is cationic-type polyacrylamide.
As the preferred embodiment of the present invention, the cleanser is prepared by the ingredient of following parts by weight：
Magnesium chloride：30 parts；
Dipotassium hydrogen phosphate：25 parts；
Sodium hydroxide：17 parts；
Zeolite powder：12 parts；
Aluminum sulfate：15 parts；
Frerrous chloride：15 parts；
Cationic-type polyacrylamide：6 parts；
Flyash：13 parts；
Lime：6 parts.
The second object of the present invention is to provide the preparation method of the cleanser of above-mentioned processing coking wastewater, the preparation method packet
Include following steps：
（1）Under the conditions of 20-100 DEG C, it is equal that magnesium chloride, dipotassium hydrogen phosphate and sodium hydroxide progress are added in the reactor for filling water
Even stirring, stirring are added zeolite powder, are adequately mixed, mixing time to dissolving in solution then upon dissolution
It is 10-30 minutes, obtains mixed liquor A；
（2）20-100 DEG C of temperature is kept, water will be added in mixed liquor A, aluminum sulfate is then added and is mixed with frerrous chloride,
Until dissolving is in solution, cationic-type polyacrylamide is then added and is quickly stirred, mixing time is 20-40 minutes, is obtained
To mixed liquid B；
（3）Flyash and lime are crushed into sieving respectively, it is 1-3 hours dry under the conditions of 60-100 DEG C, then by it
Even mixing obtains intermixture after roasting 1-3 hours, then ground crushing under the conditions of 100-600 DEG C；
（4）Intermixture is added in mixed liquid B, water is added to be mixed, mixing time is 30-50 minutes, and it is small to staticly settle 1-2
When, to get finished product after being dried 30-60 minutes under the conditions of 60-100 DEG C.
The third object of the present invention is to provide a kind of application of the cleanser of above-mentioned processing coking wastewater.According to coking wastewater
Water quality situation adds, and the ratio of adding is（0.1-0.5：1）kg/m3。
The cleanser and the preparation method and application thereof of processing coking wastewater of the present invention, compared with prior art,
Advantage is as follows：
（1）It is quoted by the cooperation of magnesium chloride, dipotassium hydrogen phosphate, sodium hydroxide and zeolite powder, it can be to highly concentrated in coking wastewater
It spends ammonia nitrogen efficiently, quickly handle, water outlet ammonia nitrogen concentration meets country《Integrated wastewater discharge standard》(GB8978~96).
（2）Aluminum sulfate and frerrous chloride are compounded, sedimentation effect is good, and flocculation reaction is rapider, and dosing is more
It is few, cationic-type polyacrylamide is added, is built bridge using its high polymer coagulant and is coupled action characteristic, flocculation can be improved and made
With enhancing sedimentation effect.
（3）By flyash and two kinds of mineral of lime after compound roasting, structure is changed and is recombinated, and is generated collaboration and is made
With its adsorption effect is more notable for more single mineral, with few, of low cost, the easy recycling of dosage, can be recycled excellent
Point has prodigious economic results in society and industrial applications foreground.
（4）Pass through magnesium chloride, dipotassium hydrogen phosphate, sodium hydroxide, zeolite powder, aluminum sulfate, frerrous chloride, cationic poly third
Acrylamide, flyash and lime are a kind of cleanser of processing coking wastewater prepared by ingredient, to the treatment effect of coking wastewater
Good, purifying rate is high, overcomes the undesirable disadvantage of the single cleanser clean-up effect of tradition.
Description of the drawings
Fig. 1 is cleanser of the present invention to the contrast effect schematic diagram before and after coking purification of waste water.
Fig. 2 is contrast effect schematic diagram of the cleanser of the present invention with certain commercially available aluminium system cleanser to coking purification of waste water.
Specific implementation mode
Present invention is further elaborated in following combination specific embodiment, but these embodiments are illustrative of the invention, and
It should not be construed as any restrictions of the scope of the invention.
Embodiment 1：
Under the conditions of 30 DEG C, 20kg magnesium chlorides, 15kg dipotassium hydrogen phosphates and 10kg sodium hydroxides are added in the reactor for filling water
Uniform stirring is carried out, stirring is added 5kg zeolite powders, is adequately mixed to dissolving in solution then upon dissolution,
Mixing time is 10 minutes, obtains mixed liquor A；Keep 30 DEG C of temperature, will in mixed liquor A plus water, be then added 5kg aluminum sulfate with
5kg frerrous chlorides are mixed, until dissolving is in solution, it is quick that the progress of 3kg cationic-type polyacrylamides is then added
Stirring, mixing time are 20 minutes, obtain mixed liquid B；5kg flyash and 3kg lime are crushed into sieving respectively, in 60 DEG C
Under the conditions of dry 1 hour, then it is uniformly mixed, is mixed after roasting 1 hour, then ground crushing under the conditions of 200 DEG C
Mixture；Intermixture is added in mixed liquid B, water is added to be mixed, mixing time is 30 minutes, is staticly settled 1 hour, in 60
To get finished product after being dried 30 minutes under the conditions of DEG C.
Embodiment 2：
Under the conditions of 60 DEG C, 30kg magnesium chlorides, 25kg dipotassium hydrogen phosphates and 17kg sodium hydroxides are added in the reactor for filling water
Uniform stirring is carried out, 12kg zeolite powders are added to dissolving in stirring in solution then upon dissolution, carry out adequately mixing and stir
It mixes, mixing time is 20 minutes, obtains mixed liquor A；Temperature 60 C is kept, water will be added in mixed liquor A, 15kg sulfuric acid is then added
Aluminium is mixed with 15kg frerrous chlorides, until dissolving is in solution, 6kg cationic-type polyacrylamides is then added and carry out
Quickly stirring, mixing time are 30 minutes, obtain mixed liquid B；13kg flyash and 6kg lime are crushed into sieving respectively,
It is 2 hours dry under the conditions of 80 DEG C, then it is uniformly mixed, after roasting 2 hours, then ground crushing under the conditions of 400 DEG C
Obtain intermixture；Intermixture is added in mixed liquid B, water is added to be mixed, mixing time is 40 minutes, staticly settles 1.5
Hour, to get finished product after being dried 45 minutes under the conditions of 80 DEG C.
Embodiment 3：
Under the conditions of 90 DEG C, 40kg magnesium chlorides, 35kg dipotassium hydrogen phosphates and 25kg sodium hydroxides are added in the reactor for filling water
Uniform stirring is carried out, 20kg zeolite powders are added to dissolving in stirring in solution then upon dissolution, carry out adequately mixing and stir
It mixes, mixing time is 30 minutes, obtains mixed liquor A；90 DEG C of temperature is kept, water will be added in mixed liquor A, 25kg sulfuric acid is then added
Aluminium is mixed with 25kg frerrous chlorides, until dissolving be in solution, then be added 10kg cationic-type polyacrylamides into
Row quickly stirring, mixing time is 40 minutes, obtains mixed liquid B；20kg flyash and 10kg lime were crushed respectively
Sieve, it is 3 hours dry under the conditions of 100 DEG C, then it is uniformly mixed, is roasted 3 hours under the conditions of 600 DEG C, then ground powder
Intermixture is obtained after broken；Intermixture is added in mixed liquid B, water is added to be mixed, mixing time is 50 minutes, is staticly settled
It 2 hours, is dried after sixty minutes to get finished product under the conditions of 100 DEG C.
Embodiment 4：
It takes tri- parts of coking wastewater 800mL to be respectively placed in the beaker of three 1000mL, is separately added into the embodiment of the present invention 1, implements
Cleanser 300mg prepared by example 2 and embodiment 3, stirs 20 minutes, takes supernatant to be examined respectively after staticly settling half an hour
It surveys, detection project includes：COD（Potassium dichromate method）；Ammonia nitrogen（Na Shi reagent colorimetric methods）；Cyanide（Isonicotinic acid -- barbituric acid point
Light photometry）.Test result is as shown in Table 1：
As shown in Table 1：It is useless to be separately added into cleanser processing coking prepared by the embodiment of the present invention 1, embodiment 2 and embodiment 3
Water, COD removal rates can reach 75% or more, and ammonia nitrogen removal frank can reach 80% or more, and cyanide removal rate can reach
85% or more.Every pollutant index is substantially reduced, can be as the processing method of coking wastewater.
Embodiment 5：
Cleanser prepared by the present invention carries out contrast experiment with certain commercially available aluminium system cleanser, and experiment wastewater is derived from certain industrial park
Low concentration coking wastewater in the biochemistry pool of waste water treatment plant.Experimental method is as follows：Add respectively in the beaker of two 1000mL
Enter the above-mentioned coking wastewaters of 800mL, is separately added into certain commercially available aluminium system cleanser（Control group）, cleanser of the present invention（Experimental group）, add
It is 300mg to enter amount, stirs 20 minutes, takes supernatant to be detected respectively after staticly settling half an hour, detection project includes：
COD（Potassium dichromate method）；Ammonia nitrogen（Na Shi reagent colorimetric methods）；Cyanide（Isonicotinic acid -- barbituric acid spectrophotometry）.Test knot
Fruit is as shown in Table 2：
As shown in Table 2：For cleanser prepared by the present invention when handling coking wastewater, COD removal rates are 76.3%, ammonia nitrogen removal
Rate is 88.9%, and cyanide removal rate is 100%；Certain commercially available poly-aluminium system cleanser COD removal rate is 65.1%, and ammonia nitrogen removal frank is
66.4%, cyanide removal rate is 70.6%.As it can be seen that added amount of chemical under the same conditions, using the purification for preparing of the present invention
When agent handles low concentration coking wastewater, effect is more excellent.
Embodiment 6：
Cleanser prepared by the present invention carries out contrast experiment with certain commercially available aluminium system cleanser, and experiment wastewater is derived from certain industrial park
High concentration coking in the biochemistry pool of waste water treatment plant.Experimental method is as follows：Add respectively in the beaker of two 1000mL
Enter the above-mentioned coking wastewaters of 800mL, is separately added into certain commercially available aluminium system cleanser（Control group）, cleanser of the present invention（Experimental group）, add
It is 300mg to enter amount, stirs 20 minutes, takes supernatant to be detected respectively after staticly settling half an hour, detection project includes：
COD（Potassium dichromate method）；Ammonia nitrogen（Na Shi reagent colorimetric methods）；Cyanide（Isonicotinic acid -- barbituric acid spectrophotometry）.Test knot
Fruit is as shown in Table 3：
As shown in Table 3：For cleanser prepared by the present invention when handling coking wastewater, COD removal rates are 80.2%, ammonia nitrogen removal
Rate is 86.9%, and cyanide removal rate is 85.7%；Certain commercially available poly-aluminium system cleanser COD removal rate is 72.1%, and ammonia nitrogen removal frank is
60.5%, cyanide removal rate is 73.0%.As it can be seen that added amount of chemical under the same conditions, using the purification for preparing of the present invention
When agent handles high concentration coking, effect is more excellent.
From figure 1 it appears that cleanser of the present invention is notable to the clean-up effect of coking wastewater, with the increasing of clarification time
Add, purifying rate also improves therewith, and when the clarification time reaches 40min or more, purifying rate tends to be steady；From figure 2 it can be seen that
With the increase of cleanser of the present invention and certain commercially available poly-aluminium system cleanser dosage, purifying rate also improves therewith, and dosage is in 0.4g/L
When purifying rate highest, dosage be more than 0.4g/L when purifying rate decrease, added amount of chemical under the same conditions, system of the present invention
Purifying rate of the standby cleanser when handling coking wastewater is higher than certain commercially available aluminium system cleanser.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of from which, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended right
It is required that rather than above description limit, it is intended that all changes that will be fallen within the meaning and scope of the equivalent requirements of the claims
Change is included within the present invention.Any label in claim should not be considered as and be limited the claims involved.
Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Claims (9)
1. a kind of cleanser of processing coking wastewater, it is characterised in that：It is prepared by following component：
Magnesium salts, phosphate, alkali tune agent, zeolite powder, aluminium salt, ferrous salt, PAM, flyash and lime.
2. a kind of cleanser of processing coking wastewater according to claim 1, it is characterised in that：By following parts by weight ingredient
It is prepared：
Magnesium salts：20-40 parts；
Phosphate：15-35 parts；
Alkali tune agent：10-25 parts；
Zeolite powder：5-20 parts；
Aluminium salt：5-25 parts；
Ferrous salt：5-25 parts；
PAM：3-10 parts；
Flyash：5-20 parts；
Lime：3-10 parts.
3. a kind of cleanser of processing coking wastewater according to claim 1, it is characterised in that：By following parts by weight ingredient
It is prepared：
Magnesium salts：25-35 parts；
Phosphate：20-30 parts；
Alkali tune agent：15-20 parts；
Zeolite powder：10-15 parts；
Aluminium salt：10-20 parts；
Ferrous salt：10-20 parts；
PAM：5-8 parts；
Flyash：8-18 parts；
Lime：5-8 parts.
4. a kind of cleanser of processing coking wastewater according to claim 1, it is characterised in that：
The magnesium salts is one kind or combinations thereof in magnesium sulfate, magnesium chloride, magnesium carbonate；The phosphate be sodium phosphate, potassium phosphate,
One kind or combinations thereof in disodium hydrogen phosphate, dipotassium hydrogen phosphate, sodium dihydrogen phosphate or potassium dihydrogen phosphate；The alkali tune agent is
One kind or combinations thereof in sodium hydroxide, calcium hydroxide；The aluminium salt is one kind or combinations thereof in aluminum sulfate, aluminium chloride；Institute
It is one kind or combinations thereof in ferrous sulfate, frerrous chloride to state ferrous salt；The PAM is cationic-type polyacrylamide or negative and positive
Polyacrylamide.
5. a kind of cleanser of processing coking wastewater according to claim 1, it is characterised in that：
The magnesium salts is magnesium chloride；The phosphate is dipotassium hydrogen phosphate；The alkali tune agent is sodium hydroxide；The aluminium salt is sulphur
Sour aluminium；The ferrous salt is frerrous chloride；The PAM is cationic-type polyacrylamide.
6. a kind of cleanser of processing coking wastewater according to claim 1, it is characterised in that：By following parts by weight at
Divide and is prepared：
Magnesium chloride：30 parts；
Dipotassium hydrogen phosphate：25 parts；
Sodium hydroxide：17 parts；
Zeolite powder：12 parts；
Aluminum sulfate：15 parts；
Frerrous chloride：15 parts；
Cationic-type polyacrylamide：6 parts；
Flyash：13 parts；
Lime：6 parts.
7. according to a kind of preparation method of the cleanser of processing coking wastewater of claim 1-6 any one of them, feature exists
In including the following steps：
（1）Under the conditions of 20-100 DEG C, it is equal that magnesium chloride, dipotassium hydrogen phosphate and sodium hydroxide progress are added in the reactor for filling water
Even stirring, stirring are added zeolite powder, are adequately mixed, mixing time to dissolving in solution then upon dissolution
It is 10-30 minutes, obtains mixed liquor A；
（2）20-100 DEG C of temperature is kept, water will be added in mixed liquor A, aluminum sulfate is then added and is mixed with frerrous chloride,
Until dissolving is in solution, cationic-type polyacrylamide being then added and is quickly stirred, mixing time is 20-40 minutes,
Obtain mixed liquid B；
（3）Flyash and lime are crushed into sieving respectively, it is 1-3 hours dry under the conditions of 60-100 DEG C, then by it
Even mixing obtains intermixture after roasting 1-3 hours, then ground crushing under the conditions of 100-600 DEG C；
（4）Intermixture is added in mixed liquid B, water is added to be mixed, mixing time is 30-50 minutes, and it is small to staticly settle 1-2
When, to get finished product after being dried 30-60 minutes under the conditions of 60-100 DEG C.
8. handling cleanser the answering in terms of handling coking wastewater of coking wastewater according to claim 1-7 any one of them
With.
9. application according to claim 8, it is characterised in that the ratio that adds of the cleanser and waste water is（0.1-0.5：
1）kg/m3。
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|---|---|---|---|---|
| CN116573731A (en) * | 2023-06-09 | 2023-08-11 | 中国标准化研究院 | Method and system for simultaneously removing total cyanogen and polycyclic aromatic hydrocarbon in coking biochemical effluent |
| CN116573731B (en) * | 2023-06-09 | 2024-02-09 | 中国标准化研究院 | Method and system for simultaneously removing total cyanogen and polycyclic aromatic hydrocarbon in coking biochemical effluent |
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