CN104828917A - Multifunctional waste liquid processing agent and applications thereof - Google Patents

Multifunctional waste liquid processing agent and applications thereof Download PDF

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Publication number
CN104828917A
CN104828917A CN201510206901.0A CN201510206901A CN104828917A CN 104828917 A CN104828917 A CN 104828917A CN 201510206901 A CN201510206901 A CN 201510206901A CN 104828917 A CN104828917 A CN 104828917A
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waste liquid
acrylamide
multifunctional waste
treatment agent
liquid treatment
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CN104828917B (en
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俞铁明
张有连
张怀滨
姜跃平
姜健
张怀辉
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CHANG'AN RENHENG CHEMICAL Co Ltd
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CHANG'AN RENHENG CHEMICAL Co Ltd
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Abstract

The invention discloses a multifunctional waste liquid processing agent. The processing agent is prepared by the following steps: burning sodium-based bentonite at a temperature of 350 to 450 DEG C, then adding the burned sodium-based bentonite into an acrylamide water solution with a mass percentage of 40 to 50% according to a mass ratio of bentonite to acrylamide of 1.2 to 1.1, stirring at a high speed for 2 hours at a temperature of 40 DEG C; adding ammonium persulfate accounting for 3 to 5 wt% of the acrylamide monomers into the mixed system, heating to a temperature of 45 DEG C to trigger polymerization reactions, keeping on heating the system to a temperature of 85 to 95 DEG C, then cooling to 60 DEG C, adding a crosslinking agent, heating the system to a temperature of 70 DEG C, carrying out reactions for 30 minutes; transferring the system to an environment with a temperature of 30 DEG C, allowing the system to stand still for a while, drying through baking, grinding, and sieving by a 200-mesh sieve to obtain the multifunctional waste liquid processing agent. The provided processing agent can be applied to the percolate anti-seepage treatment in a refuse landfill and can also be used to process normal industrial wastewater.

Description

A kind of Multifunctional waste liquid treatment agent and application thereof
Technical field
The invention belongs to chemical industry and environmental technology field, relate to a kind of Multifunctional waste water treatment agent, can be used for the process of commonly industrial wastewater physics and chemistry, in addition, also can be used for percolate from garbage filling field Anti-seeping technology.
Background technology
The process of trade effluent and the Anti-seeping technology of garbage loading embeading percolation liquid more and more become one of the hot issue in Environmental Science and Engineering field.In recent years, along with the high speed development of urbanization process, no matter the generation of municipal wastes is that total amount or speedup all increase with exponential form.At present, the process of municipal wastes mainly with landfill and burning electricity generation for mainly to process means.In garbage loading embeading treating processes, selecting and lay efficient, safe sanitary landfill impervious material, is effectively control percolate to the important means of the environmental pollution such as Soil Surrounding, underground water source and measure.And the upgrading and transformation of industry propose more strict requirement for the harmless treatment of sewage.
Wilkinite take montmorillonite as the 2:1 type layered silicate clay mineral of main mineral constituent, there is the ability of Liquidity limit and polar organic molecule, these ions can also be remained on commutative state, can active adsorption process Persistent organic pollutants, in wastewater treatment and pollution law, have broad application prospects.Polyacrylamide is a kind of linear water soluble polymer, it is one of kind be most widely used in water-soluble high-molecular compound, owing to containing a certain amount of polar group in molecular chain, the solids suspended in energy planar water, making builds bridge between particle forms large throw out, accelerates the particle precipitation in suspension.
Modification PAM-sodium bentonite composite water absorbing water-purifying material refers to the feature based on the special laminate structure of wilkinite and polyacrylamide chemical structure, the class energy adsorbed water molecule made, the matrix material of positively charged ion and organic molecule.Both there is the characteristic that inorganic bentonite is excellent, there is again the huge specific surface area of hydrophobic oleophilic oil, and can good treatment effect have been produced in the process of trade effluent physics and chemistry and the application of garbage loading embeading percolation liquid Anti-seeping technology.
Patent CN103708631A describes a kind of sewage-treating agent standby by mixed raw materials such as sepiolite powder, wilkinite, starch xanthate, cross-linked rectorite, polymerize aluminum chloride, chitosans and preparation technology thereof; Patent CN103787473A describes a kind of high stability sewage-treating agent of preparing for raw material with citric acid, sodium carbonate, magnesiumcarbonate, iron trichloride, calcium oxide and polyacrylamide and preparation method.These sewage-treating agent flocculating properties are lower, use the solid waste of rear formation to be difficult to carry out recycling treatment; On the other hand, performance is recycled poor.
Summary of the invention
The object of this invention is to provide a kind of Multifunctional waste liquid treatment agent.
To achieve these goals, the present invention is by the following technical solutions:
A kind of Multifunctional waste liquid treatment agent, is characterized in that being prepared from by following method:
(1) by sodium bentonite calcination 1h under 350 ~ 450 DEG C of conditions;
(2) configuration quality mark is the acrylamide soln of 40 ~ 50%, in mass ratio m wilkinite: m acrylamidethe ratio of=1.2 ~ 1:1 adds the wilkinite after calcination, stirs 2h under 40 DEG C of conditions;
(3) get the mixed system that a certain amount of ammonium persulphate adds step (2) gained, the add-on of ammonium persulphate is 3 ~ 5 ‰ of acrylamide quality.;
(4) mixed system obtained by step (3) is warming up to 45 DEG C of reactions;
(5) step (4) reaction automatic heating to 85 DEG C ~ 90 DEG C, and after naturally cooling to 60 DEG C, add linking agent, and temperature is risen to 70 DEG C again, reaction 30min;
(6) dry under the mixture obtained by step (5) being transferred to 30 DEG C of conditions, grind rear mistake 200 mesh sieve, obtain Multifunctional waste liquid treatment agent.
Calcination temperature described in step (1) is preferably 380 DEG C.
Linking agent described in step (5) is N, N '-dimethyl allylidene acid amides; Described N, the add-on of N '-dimethyl allylidene acid amides is 2.6 ~ 6.3 ‰ of acrylamide quality.
The present invention is first by sodium bentonite calcination, add bentonitic bedding void, utilize the cation exchange properties of sodium bentonite, sodium bentonite lamellar spacing is inserted with electropositive ammonium group by acrylamide monomer, propenyl with polymerization activity is placed in environment, as Polymer-supported to the docking point of sodium bentonite, the polyacrylamide be compounded on wilkinite is formed by radical polymerization, special construction through cross-linking modified formation can organic pollutant in active adsorption percolate from garbage filling field or commonly industrial wastewater and inorganic pollutant.
The preparation method of Multifunctional waste liquid treatment agent is further described below:
1. calcination wilkinite.Wilkinite is carried out calcination at a certain temperature, removes a part of middle water and Bound moisture in wilkinite, increase wilkinite bedding void, make it loosen.Temperature will be suitable for, and ensures to remove middle water and Bound moisture, again can not be too high and sintered by wilkinite.Suitable temperature is 350 ~ 450 DEG C, preferably 380 DEG C;
2. monomer intercalation.Wilkinite after calcination is added the acrylamide solution that the wilkinite after calcination is placed in certain mass mark in proportion, is warming up to 40 DEG C, high-speed stirring 2h;
3. in acrylamide solution, the massfraction of acrylamide is 40 ~ 50%, and the sodium bentonite mass ratio after acrylamide and calcination is m wilkinite: m acrylamide=1.2 ~ 1:1;
4. aqueous solution polymerization.By 3 ~ 5 ‰ of acrylamide monomer quality, take ammonium persulphate as initiator, add step 2 and obtain in mixed system, be warming up to 45 DEG C and start polyreaction;
5. cross-linking modified.Step 3 polyreaction automatic heating to 85 DEG C-90 DEG C, and after naturally cooling to 60 DEG C, get N by 2.6 ~ 6.3 ‰ of acrylamide massfraction, N '-dimethyl allylidene acid amides, be added in mixed system as linking agent, bath temperature be increased to 70 DEG C, carry out crosslinking reaction;
6. dry grinding.After step 4 starts crosslinking reaction 30min, leave standstill under the system of acquisition being moved to 30 DEG C of conditions and dry, grind rear mistake 200 mesh sieve, obtain percolate from garbage filling field treatment agent.
Multifunctional waste liquid treatment agent of the present invention can be used for the physics and chemistry process of commonly industrial wastewater.Modified alta-mud and polyacrylamide act synergistically, and significantly can increase flocculation ability, can organic pollutant in active adsorption commonly industrial wastewater and inorganic pollutant.
Multifunctional waste liquid treatment agent of the present invention also can be used for the Anti-seeping technology of percolate from garbage filling field, is layed in refuse landfill as impervious material, can efficient adsorption percolate, effectively controls percolate and pollutes Soil Surrounding, underground water source.
Embodiment
Embodiment 1
Get 400kg sodium bentonite, calcination 1h at 350 DEG C.
Configuration 1000kg acrylamide massfraction is the acrylamide solution of 40%.
Sodium bentonite after calcination is added in acrylamide solution, after mixing.Mixed system is warming up to 40 DEG C, stirs, reaction 2h.
Getting 1.20kg ammonium persulphate adds in reaction system, is warming up to 45 DEG C, polymerization reaction, stirs.
Question response system automatic heating to 85 DEG C-95 DEG C also, after dropping to 60 DEG C, gets 1.04kgN, and N '-dimethyl allylidene acid amides adds in system, is warming up to 70 DEG C, stirs, reaction 30min.
Reacted mixture is extruded, and under moving to 30 DEG C of environment, leaves standstill oven dry 12h.
Mixture after drying is ground, crosses 200 mesh sieves, obtain finished product.
Embodiment 2
Get 436.80kg sodium bentonite, calcination 1h at 370 DEG C.
Configuration 1000kg acrylamide massfraction is the acrylamide solution of 42%.
Sodium bentonite after calcination is added in acrylamide solution, after mixing.Mixed system is warming up to 40 DEG C, stirs, reaction 2h.
Getting 1.43kg ammonium persulphate adds in reaction system, is warming up to 45 DEG C, polymerization reaction, stirs.
Question response system automatic heating to 85 DEG C-95 DEG C also, after dropping to 60 DEG C, gets 1.40kgN, and N '-dimethyl allylidene acid amides adds in system, is warming up to 70 DEG C, stirs, reaction 30min.
Reacted mixture is extruded, and under moving to 30 DEG C of environment, leaves standstill oven dry 12h.
Mixture after drying is ground, crosses 200 mesh sieves, obtain finished product.
Embodiment 3
Get 466.40kg sodium bentonite, calcination 1h at 390 DEG C.
Configuration 1000kg acrylamide massfraction is the acrylamide solution of 44%.
Sodium bentonite after calcination is added in acrylamide solution, after mixing.Mixed system is warming up to 40 DEG C, stirs, reaction 2h.
Getting 1.67kg ammonium persulphate adds in reaction system, is warming up to 45 DEG C, polymerization reaction, stirs.
Question response system automatic heating to 85 DEG C-95 DEG C also, after dropping to 60 DEG C, gets 1.79kgN, and N '-dimethyl allylidene acid amides adds in system, is warming up to 70 DEG C, stirs, reaction 30min.
Reacted mixture is extruded, and under moving to 30 DEG C of environment, leaves standstill oven dry 12h.
Mixture after drying is ground, crosses 200 mesh sieves, obtain finished product.
Embodiment 4
Get 496.80kg sodium bentonite, calcination 1h at 410 DEG C.
Configuration 1000kg acrylamide massfraction is the acrylamide solution of 46%.
Sodium bentonite after calcination is added in acrylamide solution, after mixing.Mixed system is warming up to 40 DEG C, stirs, reaction 2h.
Getting 1.93kg ammonium persulphate adds in reaction system, is warming up to 45 DEG C, polymerization reaction, stirs.
Question response system automatic heating to 85 DEG C-95 DEG C also, after dropping to 60 DEG C, gets 2.22kgN, and N '-dimethyl allylidene acid amides adds in system, is warming up to 70 DEG C, stirs, reaction 30min.
Reacted mixture is extruded, and under moving to 30 DEG C of environment, leaves standstill oven dry 12h.
Mixture after drying is ground, crosses 200 mesh sieves, obtain finished product.
Embodiment 5
Get 556.80kg sodium bentonite, calcination 1h at 430 DEG C.
Configuration 1000kg acrylamide massfraction is the acrylamide solution of 48%.
Sodium bentonite after calcination is added in acrylamide solution, after mixing.Mixed system is warming up to 40 DEG C, stirs, reaction 2h.
Getting 2.21kg ammonium persulphate adds in reaction system, is warming up to 45 DEG C, polymerization reaction, stirs.
Question response system automatic heating to 85 DEG C-95 DEG C also, after dropping to 60 DEG C, gets 2.67kgN, and N '-dimethyl allylidene acid amides adds in system, is warming up to 70 DEG C, stirs, reaction 30min.
Reacted mixture is extruded, and under moving to 30 DEG C of environment, leaves standstill oven dry 12h.
Mixture after drying is ground, crosses 200 mesh sieves, obtain finished product.
Embodiment 6
Get 600kg sodium bentonite, calcination 1h at 450 DEG C.
Configuration 1000kg acrylamide massfraction is the acrylamide solution of 50%.
Sodium bentonite after calcination is added in acrylamide solution, after mixing.Mixed system is warming up to 40 DEG C, stirs, reaction 2h.
Getting 2.50kg ammonium persulphate adds in reaction system, is warming up to 45 DEG C, polymerization reaction, stirs.
Question response system automatic heating to 85 DEG C-95 DEG C also, after dropping to 60 DEG C, gets 3.15kgN, and N '-dimethyl allylidene acid amides adds in system, is warming up to 70 DEG C, stirs, reaction 30min.
Reacted mixture is extruded, and under moving to 30 DEG C of environment, leaves standstill oven dry 12h.
Mixture after drying is ground, crosses 200 mesh sieves, obtain finished product.
Embodiment 7
Get 480kg sodium bentonite, calcination 1h at 380 DEG C.
Configuration 1000kg acrylamide massfraction is the acrylamide solution of 40%.
Sodium bentonite after calcination is added in acrylamide solution, after mixing.Mixed system is warming up to 40 DEG C, stirs, reaction 2h.
Getting 1.20kg ammonium persulphate adds in reaction system, is warming up to 45 DEG C, polymerization reaction, stirs.
Question response system automatic heating to 85 DEG C-95 DEG C also, after dropping to 60 DEG C, gets 1.04kgN, and N '-dimethyl allylidene acid amides adds in system, is warming up to 70 DEG C, stirs, reaction 30min.
Reacted mixture is extruded, and under moving to 30 DEG C of environment, leaves standstill oven dry 12h.
Mixture after drying is ground, crosses 200 mesh sieves, obtain finished product.
Embodiment 8
Get 600kg sodium bentonite, calcination 1h at 380 DEG C.
Configuration 1000kg acrylamide massfraction is the acrylamide solution of 50%.
Sodium bentonite after calcination is added in acrylamide solution, after mixing.Mixed system is warming up to 40 DEG C, stirs, reaction 2h.
Getting 2.50kg ammonium persulphate adds in reaction system, is warming up to 45 DEG C, polymerization reaction, stirs.
Question response system automatic heating to 85 DEG C-95 DEG C also, after dropping to 60 DEG C, gets 3.15kgN, and N '-dimethyl allylidene acid amides adds in system, is warming up to 70 DEG C, stirs, reaction 30min.
Reacted mixture is extruded, and under moving to 30 DEG C of environment, leaves standstill oven dry 12h.
Mixture after drying is ground, crosses 200 mesh sieves, obtain finished product.
The effect of waste liquor treating agent of the present invention in Industrial Wastewater Treatment sees the following form:
Water absorbent rate (g/g) COD clearance (%) Ammonia nitrogen removal frank (%) Pb 2+Adsorptive capacity (mg/g) Zn 2+Clearance (%) TCr clearance (%) TFe clearance (%)
Embodiment 1 36.21 81.4 91.23 118.43 54.12 57.13 64.12
Embodiment 2 36.56 82.3 92.43 119.21 54.65 57.85 64.76
Embodiment 3 37.43 84.7 91.76 119.54 55.21 58.31 65.21
Embodiment 4 38.34 82.6 93.54 120.49 55.54 59.20 65.87
Embodiment 5 36.54 87.3 93.76 120.76 56.06 59.31 66.12
Embodiment 6 37.78 83.4 94.43 122.05 56.72 60.62 66.84
Embodiment 7 38.96 86.3 96.65 124.47 58.21 61.24 68.23
Embodiment 8 39.08 85.2 95.24 123.65 54.14 60.48 67.92
Multifunctional waste liquid treatment agent of the present invention acts synergistically due to modified alta-mud and polyacrylamide, significantly can increase flocculation ability, can organic pollutant in active adsorption commonly industrial wastewater and inorganic pollutant.Also can be used as impervious material and be layed in refuse landfill, can efficient adsorption percolate, effectively control percolate and Soil Surrounding, underground water source are polluted.

Claims (6)

1. a Multifunctional waste liquid treatment agent, is characterized in that being prepared from by following method:
(1) by sodium bentonite calcination 1h under 350 ~ 450 DEG C of conditions;
(2) configuration quality mark is the acrylamide soln of 40 ~ 50%, in mass ratio m wilkinite: m acrylamidethe ratio of=1.2 ~ 1:1 adds the wilkinite after calcination, stirs 2h under 40 DEG C of conditions;
(3) get the mixed system that a certain amount of ammonium persulphate adds step (2) gained, the add-on of ammonium persulphate is 3 ~ 5 ‰ of acrylamide quality;
(4) mixed system obtained by step (3) is warming up to 45 DEG C of reactions;
(5) step (4) reaction automatic heating to 85 DEG C ~ 90 DEG C, and after naturally cooling to 60 DEG C, add linking agent, and temperature is risen to 70 DEG C again, reaction 30min;
(6) dry under the mixture obtained by step (5) being transferred to 30 DEG C of conditions, grind rear mistake 200 mesh sieve, obtain Multifunctional waste liquid treatment agent.
2. Multifunctional waste liquid treatment agent as claimed in claim 1, it is characterized in that, the calcination temperature described in step (1) is 380 DEG C.
3. Multifunctional waste liquid treatment agent as claimed in claim 1, it is characterized in that, the linking agent described in step (5) is N, N '-dimethyl allylidene acid amides.
4. Multifunctional waste liquid treatment agent as claimed in claim 3, it is characterized in that, described N, the add-on of N '-dimethyl allylidene acid amides is 2.6 ~ 6.3 ‰ of acrylamide quality.
5. the application of the described Multifunctional waste liquid treatment agent of one of claim 1-4 in the physics and chemistry process of commonly industrial wastewater.
6. the application of the described Multifunctional waste liquid treatment agent of one of claim 1-4 in the Anti-seeping technology of percolate from garbage filling field.
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Denomination of invention: A multifunctional waste liquid treatment agent and its application

Effective date of registration: 20231115

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Pledgee: Changxin Zhejiang rural commercial bank Limited by Share Ltd.

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