CN107892408A - A kind of farmland agricultural chemicals waste water purification method - Google Patents
A kind of farmland agricultural chemicals waste water purification method Download PDFInfo
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- CN107892408A CN107892408A CN201710935760.5A CN201710935760A CN107892408A CN 107892408 A CN107892408 A CN 107892408A CN 201710935760 A CN201710935760 A CN 201710935760A CN 107892408 A CN107892408 A CN 107892408A
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
- B01J20/262—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon to carbon unsaturated bonds, e.g. obtained by polycondensation
-
- 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
- C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
-
- 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
-
- 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
-
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/306—Pesticides
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a kind of farmland agricultural chemicals waste water purification method, pentaerythrite that the present invention adds, ethyl cellulose, colloidal sol, all serve and improve adsorption effect, while Ludox also acts quickening precipitation, the effect of adsorbent temperature is improved, good concertedness is served with polyacrylamide.The purification method for effluent of the present invention will not produce secondary pollution, and processing time is short, technique is simple, high treating effect, and water outlet can reach discharging standards, and adsorbent can be separated by settlement, and stability is good, high recycling rate.
Description
Technical field
The invention belongs to field, and in particular to a kind of farmland agricultural chemicals waste water purification method.
Background technology
Agricultural chemicals waste water is a kind of organic chemical waste water of refractory reason, has the characteristics that COD is high, toxicity is big, difficult for biological degradation.
Pesticide species are various, and agricultural chemicals waste water water quality is complicated, and it is mainly characterized by:1. pollutant concentration is higher, COD (COD) can
Up to every liter of tens thousand of milligram;2. toxicity is big, in waste water in addition to containing agricultural chemicals and intermediate, also containing the noxious materials such as phenol, arsenic, mercury with
And many biologies are difficult to the material degraded;3. foul smelling, irritant to the respiratory tract and mucous membrane of people;4. water quality, water are unstable
It is fixed.The discharge of agricultural chemicals waste water causes extensive pollution of area source, and the duration is grown, and the agricultural chemicals of residual is very big to Health Impact;
Processing agricultural chemicals waste water adds the combined treatment process of biochemistry using materialization mostly at present, water outlet is reached local existing discharge
Standard, then there is long flow path in its whole processing technology, costly, treatment effect is unstable, it is very tired to reach high standard discharge
The defects of difficult.
The content of the invention
It is an object of the invention to long flow path, costly, treatment effect be present for sewage treatment process in the prior art
It is unstable, reach high standard discharge it is extremely difficult the defects of the problem of, there is provided a kind of farmland agricultural chemicals waste water purification method.
To achieve the above object, the present invention uses following technical scheme:
A kind of farmland agricultural chemicals waste water purification method, comprises the following steps:
(1)Agricultural chemicals waste water is introduced into regulating reservoir, it is 2-4 to add acetic acid or soda, the pH for adjusting agricultural chemicals waste water;
(2)Copper sulphate, ferrous sulfate are added, is aerated 150-170 minutes;
(3)Adsorbent is added, is stirred, 2-3 hours is stood, upper strata waste water is flowed into new reaction tank, described suction
Attached dose is made up of the raw material of following weight parts:
Tetraethyl orthosilicate 26-30, montmorillonite 60-70, acrylamide 10-12, dimethyl sulfoxide (DMSO) 100-110, carboxymethyl cellulose
Sodium 1-2, pentaerythrite 3-4, ethyl cellulose 2-4, casein 0.1-0.2, ammonium persulfate 0.4-0.5;
Preparation method comprises the following steps:
Sodium carboxymethylcellulose is taken, is added in the deionized water of 70-90 times of its weight, stirs, adds tetraethyl orthosilicate,
Insulated and stirred 2-3 hours, obtain sol solution at 30-35 DEG C;
Montmorillonite is taken, is added to immersion 2-3 hours in 0.4-1mol/l sodium hydroxide solution, discharging is washed, air drying, with
Casein is mixed, and is added in dimethyl sulfoxide (DMSO), ultrasonic 1-2 hours, filters, and precipitation is washed, and has been dried at 60-65 DEG C of vacuum
Entirely, fine powder is worn into, obtains modified montmorillonoid;
Ammonium persulfate is taken, is added in the deionized water of 20-30 times of its weight, stirs;
Acrylamide is taken, is added in above-mentioned sol solution, stirs, adds above-mentioned modified montmorillonoid, ultrasonic 10-20 divides
Clock, it is sent in reactor, is passed through nitrogen, regulation temperature of reaction kettle is 65-70 DEG C, and the aqueous solution of above-mentioned ammonium persulfate is added dropwise,
Rear insulation reaction 4-6 hours are added dropwise, discharging cooling, obtain polyalcohol intercalation montmorillonite sol solution;
Pentaerythrite is taken, is added in above-mentioned polyalcohol intercalation montmorillonite sol solution, stirs, distillation water removal, produces institute
State adsorbent;
The substitution value of described ethyl cellulose is 1-1.3;
(4)It is 2-3 to take weight ratio:10 sodium hypochlorite, polyacrylamide mixing, are added in new reaction tank, stir,
1-2 hours are stood, solution is flowed out.
Described copper sulphate, ferrous sulfate, adsorbent, the w/v of the dosage of sodium hypochlorite and agricultural chemicals waste water are distinguished
For 5-7g/l, 10-13g/l, 3-4g/l, 0.1-0.2g/l.
Advantages of the present invention:
Ferrous ion, bivalent cupric ion are incorporated into waste water by the present invention, and they are good flocculants, are had and are inhaled well
Attached effect, the molecule and organic polymer of suspension or colloidal attitude in absorption effluent, while hydrate can be become
Flocculent deposit, the adsorbent then added use acrylamide as monomer, with carrying out intercalation during montmorillonite blending polymerization
It is modified, the silicon sol solution obtained using tetraethyl orthosilicate as presoma is introduced during intercalation modifying, it is effective to improve
The adsorption effect on montmorillonite layer surface after intercalation, and the ethyl cellulose added also has good viscosity, can enter one
Step improves the intercalation stability of polyacrylamide, while improves adsorption effect, and uses polyacrylamide to be used as intercalator, with gathering
Acrylamide also has good flocculating effect, and flocculation adsorption body effectively can be adsorbed onto to the montmorillonite layer table of intercalation
Face, improve wastewater purifying efficiency, it can be seen that pentaerythrite, ethyl cellulose, the colloidal sol that the present invention adds, all serve and carry
High adsorption effect, while Ludox also acts quickening precipitation, improves the effect of adsorbent temperature, is risen with polyacrylamide
Good concertedness is arrived.The purification method for effluent of the present invention will not produce secondary pollution, and processing time is short, technique is simple, place
Reason effect is good, and water outlet can reach discharging standards, and adsorbent can be separated by settlement, and stability is good, repeats profit
With rate height.
Embodiment
Embodiment 1
A kind of farmland agricultural chemicals waste water purification method, comprises the following steps:
(1)Agricultural chemicals waste water is introduced into regulating reservoir, adds acetic acid or soda, the pH for adjusting agricultural chemicals waste water is 4;
(2)Copper sulphate, ferrous sulfate are added, is aerated 170 minutes;
(3)Adsorbent is added, is stirred, 3 hours is stood, upper strata waste water is flowed into new reaction tank, described absorption
Agent is made up of the raw material of following weight parts:
Tetraethyl orthosilicate 30, montmorillonite 70, acrylamide 12, dimethyl sulfoxide (DMSO) 110, sodium carboxymethylcellulose 2, pentaerythrite 4,
Ethyl cellulose 4, casein 0.2, ammonium persulfate 0.5;
Preparation method comprises the following steps:
Sodium carboxymethylcellulose is taken, is added in the deionized water of 90 times of its weight, stirs, adds tetraethyl orthosilicate,
Insulated and stirred 3 hours, obtain sol solution at 35 DEG C;
Montmorillonite is taken, is added in 1mol/l sodium hydroxide solution and soaks 3 hours, discharging washing, air drying, with casein
Mixing, is added in dimethyl sulfoxide (DMSO), ultrasonic 2 hours, filtering, and precipitation is washed, dried completely at 65 DEG C of vacuum, is worn into thin
Powder, obtain modified montmorillonoid;
Ammonium persulfate is taken, is added in the deionized water of 30 times of its weight, stirs;
Acrylamide is taken, is added in above-mentioned sol solution, stirs, above-mentioned modified montmorillonoid is added, ultrasound 20 minutes, send
Enter into reactor, be passed through nitrogen, regulation temperature of reaction kettle is 70 DEG C, and the aqueous solution of above-mentioned ammonium persulfate is added dropwise, is added dropwise
Insulation reaction 6 hours afterwards, discharging cooling, obtain polyalcohol intercalation montmorillonite sol solution;
Pentaerythrite is taken, is added in above-mentioned polyalcohol intercalation montmorillonite sol solution, stirs, distillation water removal, produces institute
State adsorbent;
The substitution value of described ethyl cellulose is 1.3;
(4)It is 3 to take weight ratio:10 sodium hypochlorite, polyacrylamide mixing, are added in new reaction tank, stir, quiet
Put 2 hours, solution is flowed out.
Described copper sulphate, ferrous sulfate, adsorbent, the w/v of the dosage of sodium hypochlorite and agricultural chemicals waste water are distinguished
For 7g/l, 13g/l, 4g/l, 0.2g/l.
Agricultural chemicals waste water COD in farmland used in the present embodiment 1CrAverage value is 3145mg/L, turbidity 870NTU;
After method processing by the present invention, detected using method as defined in Hash standard of instruments, the waste water after processing
CODCrAverage value is 44.3mg/L, clearance 98.59%, turbidity 1.4NTU, clearance 99.84%;
Embodiment 2
A kind of farmland agricultural chemicals waste water purification method, comprises the following steps:
(1)Agricultural chemicals waste water is introduced into regulating reservoir, adds acetic acid or soda, the pH for adjusting agricultural chemicals waste water is 2;
(2)Copper sulphate, ferrous sulfate are added, is aerated 150 minutes;
(3)Adsorbent is added, is stirred, 2 hours is stood, upper strata waste water is flowed into new reaction tank, described absorption
Agent is made up of the raw material of following weight parts:
Tetraethyl orthosilicate 26, montmorillonite 60, acrylamide 10, dimethyl sulfoxide (DMSO) 100, sodium carboxymethylcellulose 1, pentaerythrite 3,
Ethyl cellulose 2, casein 0.1, ammonium persulfate 0.4;
Preparation method comprises the following steps:
Sodium carboxymethylcellulose is taken, is added in the deionized water of 70 times of its weight, stirs, adds tetraethyl orthosilicate,
Insulated and stirred 2 hours, obtain sol solution at 30 DEG C;
Montmorillonite is taken, is added in 0.4mol/l sodium hydroxide solution and soaks 2 hours, discharging washing, air drying, with cheese
Element mixing, is added in dimethyl sulfoxide (DMSO), ultrasonic 1 hour, filtering, precipitation is washed, and is dried completely at 60 DEG C of vacuum, wears into thin
Powder, obtain modified montmorillonoid;
Ammonium persulfate is taken, is added in the deionized water of 20 times of its weight, stirs;
Acrylamide is taken, is added in above-mentioned sol solution, stirs, above-mentioned modified montmorillonoid is added, ultrasound 10 minutes, send
Enter into reactor, be passed through nitrogen, regulation temperature of reaction kettle is 65 DEG C, and the aqueous solution of above-mentioned ammonium persulfate is added dropwise, is added dropwise
Insulation reaction 4 hours afterwards, discharging cooling, obtain polyalcohol intercalation montmorillonite sol solution;
Pentaerythrite is taken, is added in above-mentioned polyalcohol intercalation montmorillonite sol solution, stirs, distillation water removal, produces institute
State adsorbent;
The substitution value of described ethyl cellulose is 1;
(4)It is 2 to take weight ratio:10 sodium hypochlorite, polyacrylamide mixing, are added in new reaction tank, stir, quiet
Put 1 hour, solution is flowed out.
Described copper sulphate, ferrous sulfate, adsorbent, the w/v of the dosage of sodium hypochlorite and agricultural chemicals waste water are distinguished
For 5g/l, 10g/l, 3g/l, 0.1g/l.
Agricultural chemicals waste water COD in farmland used in the present embodiment 1CrAverage value is 3145mg/L, turbidity 870NTU;
After method processing by the present invention, detected using method as defined in Hash standard of instruments, the waste water after processing
CODCrAverage value is 40.5mg/L, clearance 98.71%, turbidity 1.0NTU, clearance 99.89%.
Claims (2)
1. a kind of farmland agricultural chemicals waste water purification method, it is characterised in that comprise the following steps:
(1)Agricultural chemicals waste water is introduced into regulating reservoir, it is 2-4 to add acetic acid or soda, the pH for adjusting agricultural chemicals waste water;
(2)Copper sulphate, ferrous sulfate are added, is aerated 150-170 minutes;
(3)Adsorbent is added, is stirred, 2-3 hours is stood, upper strata waste water is flowed into new reaction tank, described suction
Attached dose is made up of the raw material of following weight parts:
Tetraethyl orthosilicate 26-30, montmorillonite 60-70, acrylamide 10-12, dimethyl sulfoxide (DMSO) 100-110, carboxymethyl cellulose
Sodium 1-2, pentaerythrite 3-4, ethyl cellulose 2-4, casein 0.1-0.2, ammonium persulfate 0.4-0.5;
Preparation method comprises the following steps:
Sodium carboxymethylcellulose is taken, is added in the deionized water of 70-90 times of its weight, stirs, adds tetraethyl orthosilicate,
Insulated and stirred 2-3 hours, obtain sol solution at 30-35 DEG C;
Montmorillonite is taken, is added to immersion 2-3 hours in 0.4-1mol/l sodium hydroxide solution, discharging is washed, air drying, with
Casein is mixed, and is added in dimethyl sulfoxide (DMSO), ultrasonic 1-2 hours, filters, and precipitation is washed, and has been dried at 60-65 DEG C of vacuum
Entirely, fine powder is worn into, obtains modified montmorillonoid;
Ammonium persulfate is taken, is added in the deionized water of 20-30 times of its weight, stirs;
Acrylamide is taken, is added in above-mentioned sol solution, stirs, adds above-mentioned modified montmorillonoid, ultrasonic 10-20 divides
Clock, it is sent in reactor, is passed through nitrogen, regulation temperature of reaction kettle is 65-70 DEG C, and the aqueous solution of above-mentioned ammonium persulfate is added dropwise,
Rear insulation reaction 4-6 hours are added dropwise, discharging cooling, obtain polyalcohol intercalation montmorillonite sol solution;
Pentaerythrite is taken, is added in above-mentioned polyalcohol intercalation montmorillonite sol solution, stirs, distillation water removal, produces institute
State adsorbent;
The substitution value of described ethyl cellulose is 1-1.3;
(4)It is 2-3 to take weight ratio:10 sodium hypochlorite, polyacrylamide mixing, are added in new reaction tank, stir,
1-2 hours are stood, solution is flowed out.
2. a kind of farmland agricultural chemicals waste water purification method according to claim 1, it is characterised in that described copper sulphate, sulphur
Sour ferrous iron, adsorbent, the w/v of the dosage of sodium hypochlorite and agricultural chemicals waste water are respectively 5-7g/l, 10-13g/l, 3-4g/
l、0.1-0.2g/l。
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108609753A (en) * | 2018-06-27 | 2018-10-02 | 黄益良 | A kind of heavy is from sedimentation sewage-treating agent and preparation method thereof |
CN108862638A (en) * | 2018-06-27 | 2018-11-23 | 合肥艾飞新材料有限公司 | A kind of environment-protective water treatment gel and preparation method thereof |
CN109095542A (en) * | 2018-09-26 | 2018-12-28 | 深圳市裕农科技股份有限公司 | A kind of clarifying agent and preparation method thereof |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108609753A (en) * | 2018-06-27 | 2018-10-02 | 黄益良 | A kind of heavy is from sedimentation sewage-treating agent and preparation method thereof |
CN108862638A (en) * | 2018-06-27 | 2018-11-23 | 合肥艾飞新材料有限公司 | A kind of environment-protective water treatment gel and preparation method thereof |
CN108862638B (en) * | 2018-06-27 | 2021-10-12 | 苏州慧连航科技有限公司 | Environment-friendly water treatment gel and preparation method thereof |
CN109095542A (en) * | 2018-09-26 | 2018-12-28 | 深圳市裕农科技股份有限公司 | A kind of clarifying agent and preparation method thereof |
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Application publication date: 20180410 |