CN106698824B - A kind of processing method of ink factory lead waste water - Google Patents

A kind of processing method of ink factory lead waste water Download PDF

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Publication number
CN106698824B
CN106698824B CN201611226946.5A CN201611226946A CN106698824B CN 106698824 B CN106698824 B CN 106698824B CN 201611226946 A CN201611226946 A CN 201611226946A CN 106698824 B CN106698824 B CN 106698824B
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waste water
acylate
molecular compound
active carbon
lead ion
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CN106698824A (en
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于涛
郭志鹏
朱宏伟
谷鹏飞
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Lanzhou University of Technology
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Lanzhou University of Technology
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00Phosphorus; Compounds thereof
    • C01B25/16Oxyacids of phosphorus; Salts thereof
    • C01B25/26Phosphates
    • C01B25/37Phosphates of heavy metals
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • C02F1/283Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5263Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56Macromolecular compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/58Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C02F1/62Heavy metal compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/20Heavy metals or heavy metal compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • C02F2101/308Dyes; Colorants; Fluorescent agents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/08Multistage treatments, e.g. repetition of the same process step under different conditions

Abstract

The invention discloses a kind of processing methods of ink factory lead waste water, the processing method is the following steps are included: pretreated waste water is passed through filter by (1), most ink and suspended matter are removed, the residual ink in active carbon adsorption equipment removal waste water is entered after filtering;(2) sodium phosphate is added into waste water precipitates lead ion;(3) acylate, sulfur-bearing, phosphorous high-molecular compound is added in the waste water handled to step (2), metal lead ion occurs interaction with acylate and is fixed, form insoluble " Metaplex sphere ", and the complex compound of adsorbing metal, to form floccule body, the lead ion that removal is not precipitated by step (2);(4) by step (3) processed waste water by active carbon adsorption equipment, and pass through ultrafiltration membrane ultrafiltration.The present invention is removed the lead ion in waste water by two secondary responses, and removal efficiency is high, at low cost.

Description

A kind of processing method of ink factory lead waste water
Technical field
The present invention relates to Industrial Waste Water Treatments fields, and in particular to a kind of processing method of ink factory lead waste water.
Background technique
Lead is one of the element being often used in the very wide element of distributed in nature and industry, in industrial and agricultural production all There is very extensive purposes.Such as manufacture lead storage battery, pigment and paint, glass and other optical instruments and radioactive radiation Protective garment etc..Lead and its compound are a kind of nondegradable environmental contaminants, can largely be flowed by waste water,waste gas and industrial residue Environment directly or indirectly enters human body by food chain, soil, water and air.It will cause internal blood lead concentration to increase, cause The problems such as anaemia, cognitive impairment, hearing decrease, vitamin D metabolism disorder and abdominal pain.Studies have shown that damage of the lead to body Wound be in multisystem, multiple organ, can to nerve, hematopoiesis, digestion, uropoiesis, reproduction, angiocarpy, endocrine, be immunized etc. systems and Growth and development adversely affects.And Lead Toxicity is lasting, and long half time was not easy to be discharged by human body up to 10 years, any degree Lead contamination can all have an adverse effect to human health.
Printing ink wastewater can simply be divided into dyeing waste water scope, and since its biodegradability is lower, this waste water can be right Water ecology state constitutes extremely serious threat.For that purpose it is necessary to which effectively measure is taken to handle printing ink wastewater.And oil Contain lead element in black raw material, it in process of production can be containing big in waste water caused by the cleaning as instrument and other processes The lead element of amount, and since lead element adversely affects human body and environment, take certain measure to remove in waste water Lead element is particularly important.
Summary of the invention
High and easy method the technical problem to be solved in the present invention is to provide a kind for the treatment of effeciency is leaded for ink factory The processing method of waste water.
To solve the above problems, technical solution proposed by the present invention are as follows: a kind of processing method of ink factory lead waste water, packet Include following steps:
(1) pretreated waste water is passed through filter with the amount of 100~200L/h, removes most ink and suspension Object enters active carbon adsorption equipment after filtering, waste water residence time in active carbon adsorption equipment is 20~30min, is passed through Absorption, the decomposition of active carbon remove the residual ink in waste water;
(2) sodium phosphate powder is added into waste water by the amount of 5~12g/L, the lead ion in waste water and phosphate anion are sent out Raw reaction generates lead phosphate precipitating, and flocculation aid is added into waste water by the amount of 0.05~0.1g/L while reaction, promote lead from The precipitating of son, then filtering removal precipitating, carries out the primary removal of lead ion;
(3) acylate relative to 0.001~0.003 times of wastewater quality is added in the waste water handled to step (2), contains The mixture of sulphur high-molecular compound, phosphorous high-molecular compound, wherein acylate, sulfur-bearing high-molecular compound, phosphorous height The mass ratio of molecular compound is 5:3:2, contains-COOH (carboxyl) ,-OH (hydroxyl) ,-NH in acylate2Three kinds of (amino) Functional group, the quantity ratio of three kinds of functional groups is 7:3:1, and acylate itself has negative electrical charge anionic nature, right Metal lead ion has suction-operated, carboxyl anion, phosphate anion, organic sulfur-containing on metal lead ion and acylate High-molecular compound and organic phosphorous high-molecular compound occur interaction and are fixed, and form insoluble " Metaplex ball Body ", and " Metaplex sphere " can also discharge the metal complex in other Metaplex of portion of external charge attraction and waste water, Other metal ions in waste water also can be absorbed simultaneously, to form floccule body, stand the dirt of filtering removal precipitating after 3~5min Mud can the secondary lead ion removed in waste water;
(4) 0.5~2h is stopped again by active carbon adsorption equipment through step (3) processed waste water, removed in waste water The organic matter in acylate and sulfur-bearing, phosphorous high-molecular compound and waste water not reacted completely added by step (3), then Hyperfiltration treatment is carried out by the ultrafiltration membrane that aperture is 0.005~0.01 μm with the flow of 10~20L/h.
Further, the active carbon adsorption equipment is composed in series by least five drawer type absorbing unit, described Drawer type absorbing unit is used as absorption in drawer filling active carbon powder using zirconia ceramics fibrous material as substrate Agent is set as drawer type and is convenient for changing adsorbent therein, guarantees adsorption efficiency.
Further, the flocculation aid is polyacrylamide, activated silicic acid, chitosan, aluminium polychloride are pressed The mass ratio of 7:2:1:1 mixes, and polyacrylamide can make waste water by charge neutrality, and bridge formation suction-operated plays flocculation, And adhesive effect can be played, the precipitating of sediment is promoted by mechanical, physics, chemical effect;Activated silicic acid can accelerate Coagulation process improves batting-unit structure, promotes tiny and loose floccule body to become thick and closely knit, increases the density of wadding body, On the basis of having added conventional coagulant and forming tiny alumen ustum, further serves as connection and builds bridge, increase the function of collision frequency, To form bigger, more closely knit alumen ustum, it is easy to settle removal in sedimentation basin;Chitosan, aluminium polychloride auxiliary Polyacrylamide and activated silicic acid increase it and help solidifying effect.
Further, the acylate is sodium citrate, sodium lactate, Sodium p-aminobenzene sulfonat, sodium acetate therein The mixture for one or more of anticipating, the sulfur-bearing high-molecular compound are poly- dithioglycol, the phosphorous macromolecule chemical combination Object is poly- quaternary alkylphosphonium salt, and acylate, sulfur-bearing, phosphorous high-molecular compound can improve the deposition of lead ion, improves treatment effeciency.
Further, the lead ion and acylate, sulfur-bearing high-molecular compound, phosphorous high-molecular compound occur The temperature of reaction is 45~50 DEG C, guarantees lead ion and acylate, sulfur-bearing high-molecular compound, phosphorous high-molecular compound most Big degree reacts.
Further, the ultrafiltration membrane is alternately total by hydrophobic aromatic sulfone polymer, cyclization, ethylene, propylene Polymers equivalent is compounded to form hollow fiber ultrafiltration membrane, can effectively remove the residuals in waste water.
Further, the surface hole density of the hollow fiber ultrafiltration membrane is 108~120 hole/cm2, guarantee waste water Treatment effeciency.
The beneficial effects of the present invention are embodied in: the present invention first passes through a large amount of lead ion in chemical precipitation method removal waste water, At low cost, it is convenient that the lead phosphate of generation recycles;Then by be added acylate and sulfur-bearing, phosphorous high-molecular compound with The process that interaction removal lead ion occurs for lead ion is complete to the removal of lead ion, passes through to the excessive organic matter of addition Activated carbon adsorption can remove, therefore this method is economical and practical, and application value is high.
Specific embodiment
Embodiment 1: the present embodiment provides a kind of processing method of ink factory lead waste water, the processing method include with Lower step:
(1) pretreated waste water is passed through filter with the amount of 100L/h, removes most ink and suspended matter, filtered Enter active carbon adsorption equipment afterwards, waste water residence time in active carbon adsorption equipment is 20min, passes through the suction of active carbon It tells, decomposition, removes the residual ink in waste water;
(2) sodium phosphate powder is added into waste water by the amount of 5g/L, the lead ion in waste water and phosphate anion occur instead Lead phosphate precipitating should be generated, flocculation aid is added into waste water by the amount of 0.05g/L while reaction, promotes the precipitating of lead ion, Then filtering removal precipitating, carries out the primary removal of lead ion;
(3) acylate, the sulfur-bearing high score relative to 0.001 times of wastewater quality are added in the waste water handled to step (2) The mixture of sub- compound, phosphorous high-molecular compound, wherein acylate, sulfur-bearing high-molecular compound, phosphorous producing high-molecular The mass ratio for closing object is 5:3:2, contains-COOH (carboxyl) ,-OH (hydroxyl) ,-NH in acylate2(amino) three kinds of functional groups Group, the molar ratio of three kinds of functional groups is 7:3:1, and acylate itself has negative electrical charge anionic nature, to metallic lead Ion has suction-operated, carboxyl anion, phosphate anion, organic sulfur-containing macromolecule on metal lead ion and acylate Compound and organic phosphorous high-molecular compound occur interaction and are fixed, and are formed insoluble " Metaplex sphere ", and " Metaplex sphere " can also discharge the metal complex in other Metaplex of portion of external charge attraction and waste water, while Other metal ions in waste water can be absorbed, to form floccule body, the sludge for standing filtering removal precipitating after 3min can two Lead ion in secondary removal waste water;
(4) 0.5h is stopped again by active carbon adsorption equipment through step (3) processed waste water, removes step in waste water (3) acylate not reacted completely and sulfur-bearing, phosphorous high-molecular compound added by and the organic matter in waste water, then with The flow of 10L/h carries out hyperfiltration treatment by the ultrafiltration membrane that aperture is 0.005 μm.
Wherein, the active carbon adsorption equipment is composed in series by 5 drawer type absorbing units, and the drawer type is inhaled Coupon member is arranged in drawer filling active carbon powder as adsorbent using zirconia ceramics fibrous material as substrate It is convenient for changing adsorbent therein for drawer type, guarantees adsorption efficiency.
Wherein, the flocculation aid is polyacrylamide, activated silicic acid, chitosan, aluminium polychloride by quality It is mixed than 7:2:1:1.Polyacrylamide can make waste water by charge neutrality, and bridge formation suction-operated plays flocculation, Er Qieneng By mechanical, physics, chemical effect, adhesive effect is played, the precipitating of sediment is promoted;Activated silicic acid can accelerate coagulation mistake Journey improves batting-unit structure, promotes tiny and loose floccule body to become thick and closely knit, the density of wadding body increased, It adds conventional coagulant to be formed on the basis of tiny alumen ustum, further serves as connection and build bridge, increase the function of collision frequency, thus shape Cheng Geng great, more closely knit alumen ustum are easy to settle removal in sedimentation basin;Chitosan, aluminium polychloride assist polypropylene Amide and activated silicic acid increase it and help solidifying effect.
Wherein, the acylate be sodium citrate, sodium lactate, Sodium p-aminobenzene sulfonat, sodium acetate by 5:4:3:1 matter For amount than the mixture mixed, the sulfur-bearing high-molecular compound is poly- dithioglycol, the phosphorous macromolecule chemical combination Object is poly- quaternary alkylphosphonium salt, and acylate, sulfur-bearing, phosphorous high-molecular compound can improve the deposition of lead ion, improves treatment effeciency.
Wherein, the lead ion reacts with acylate, sulfur-bearing high-molecular compound, phosphorous high-molecular compound Temperature be 45 DEG C, guarantee that lead ion and acylate, sulfur-bearing high-molecular compound, phosphorous high-molecular compound are utmostly sent out Raw reaction, the ultrafiltration membrane are answered by hydrophobic aromatic sulfone polymer, cyclization, ethylene, propylene alternate copolymer equivalent Conjunction forms hollow fiber ultrafiltration membrane, can effectively remove the residuals in waste water, the surface holes of the hollow fiber ultrafiltration membrane Density is 108 hole/cm2, guarantee the treatment effeciency of waste water.
Embodiment 2: the present embodiment provides a kind of processing method of ink factory lead waste water, the processing method include with Lower step:
(1) pretreated waste water is passed through filter with the amount of 150L/h, removes most ink and suspended matter, filtered Enter active carbon adsorption equipment afterwards, waste water residence time in active carbon adsorption equipment is 25min, passes through the suction of active carbon It tells, decomposition, removes the residual ink in waste water;
(2) sodium phosphate powder is added into waste water by the amount of 8.5g/L, the lead ion in waste water and phosphate anion occur Reaction generates lead phosphate precipitating, and flocculation aid is added into waste water by the amount of 0.075g/L while reaction, promotes the heavy of lead ion It forms sediment, then filtering removal precipitating, carries out the primary removal of lead ion;
(3) acylate, the sulfur-bearing high score relative to 0.002 times of wastewater quality are added in the waste water handled to step (2) The mixture of sub- compound, phosphorous high-molecular compound, wherein acylate, sulfur-bearing high-molecular compound, phosphorous producing high-molecular The mass ratio for closing object is 5:3:2, contains-COOH (carboxyl) ,-OH (hydroxyl) ,-NH in acylate2(amino) three kinds of functional groups Group, the molar ratio of three kinds of functional groups is 7:3:1, and acylate itself has negative electrical charge anionic nature, to metallic lead Ion has suction-operated, carboxyl anion, phosphate anion, organic sulfur-containing macromolecule on metal lead ion and acylate Compound and organic phosphorous high-molecular compound occur interaction and are fixed, and are formed insoluble " Metaplex sphere ", and " Metaplex sphere " can also discharge the metal complex in other Metaplex of portion of external charge attraction and waste water, while Other metal ions in waste water can be absorbed, to form floccule body, the sludge for standing filtering removal precipitating after 4min can two Lead ion in secondary removal waste water;
(4) 1.25h is stopped again by active carbon adsorption equipment through step (3) processed waste water, removes and is walked in waste water Suddenly the organic matter in acylate and sulfur-bearing, phosphorous high-molecular compound and waste water not reacted completely added by (3), then with The flow of 15L/h carries out hyperfiltration treatment by the ultrafiltration membrane that aperture is 0.075 μm.
Wherein, the active carbon adsorption equipment is composed in series by 5 drawer type absorbing units, and the drawer type is inhaled Coupon member is arranged in drawer filling active carbon powder as adsorbent using zirconia ceramics fibrous material as substrate It is convenient for changing adsorbent therein for drawer type, guarantees adsorption efficiency.
Wherein, the flocculation aid is polyacrylamide, activated silicic acid, chitosan, aluminium polychloride by quality It is mixed than 7:2:1:1.Polyacrylamide can make waste water by charge neutrality, and bridge formation suction-operated plays flocculation, Er Qieneng By mechanical, physics, chemical effect, adhesive effect is played, the precipitating of sediment is promoted;Activated silicic acid can accelerate coagulation mistake Journey improves batting-unit structure, promotes tiny and loose floccule body to become thick and closely knit, the density of wadding body increased, It adds conventional coagulant to be formed on the basis of tiny alumen ustum, further serves as connection and build bridge, increase the function of collision frequency, thus shape Cheng Geng great, more closely knit alumen ustum are easy to settle removal in sedimentation basin;Chitosan, aluminium polychloride assist polypropylene Amide and activated silicic acid increase it and help solidifying effect.
Wherein, the acylate be sodium citrate, sodium lactate, Sodium p-aminobenzene sulfonat, sodium acetate by 5:4:3:1 matter For amount than the mixture mixed, the sulfur-bearing high-molecular compound is poly- dithioglycol, the phosphorous macromolecule chemical combination Object is poly- quaternary alkylphosphonium salt, and acylate, sulfur-bearing, phosphorous high-molecular compound can improve the deposition of lead ion, improves treatment effeciency.
Wherein, the lead ion reacts with acylate, sulfur-bearing high-molecular compound, phosphorous high-molecular compound Temperature be 47.5 DEG C, guarantee lead ion and acylate, sulfur-bearing high-molecular compound, phosphorous high-molecular compound utmostly It reacts, the ultrafiltration membrane is by hydrophobic aromatic sulfone polymer, cyclization, ethylene, propylene alternate copolymer equivalent It is compounded to form hollow fiber ultrafiltration membrane, can effectively remove the residuals in waste water, the surface of the hollow fiber ultrafiltration membrane Hole density is 114 hole/cm2, guarantee the treatment effeciency of waste water.
Embodiment 3: the present embodiment provides a kind of processing method of ink factory lead waste water, the processing method include with Lower step:
(1) pretreated waste water is passed through filter with the amount of 200L/h, removes most ink and suspended matter, filtered Enter active carbon adsorption equipment afterwards, waste water residence time in active carbon adsorption equipment is 30min, passes through the suction of active carbon It tells, decomposition, removes the residual ink in waste water;
(2) sodium phosphate powder is added into waste water by the amount of 12g/L, the lead ion in waste water and phosphate anion occur instead Lead phosphate precipitating should be generated, flocculation aid is added into waste water by the amount of 0.1g/L while reaction, promotes the precipitating of lead ion, so Filtering removal precipitating afterwards, carries out the primary removal of lead ion;
(3) acylate, the sulfur-bearing high score relative to 0.003 times of wastewater quality are added in the waste water handled to step (2) The mixture of sub- compound, phosphorous high-molecular compound, wherein acylate, sulfur-bearing high-molecular compound, phosphorous producing high-molecular The mass ratio for closing object is 5:3:2, contains-COOH (carboxyl) ,-OH (hydroxyl) ,-NH in acylate2(amino) three kinds of functional groups Group, the molar ratio of three kinds of functional groups is 7:3:1, and acylate itself has negative electrical charge anionic nature, to metallic lead Ion has suction-operated, carboxyl anion, phosphate anion, organic sulfur-containing macromolecule on metal lead ion and acylate Compound and organic phosphorous high-molecular compound occur interaction and are fixed, and are formed insoluble " Metaplex sphere ", and " Metaplex sphere " can also discharge the metal complex in other Metaplex of portion of external charge attraction and waste water, while Other metal ions in waste water can be absorbed, to form floccule body, the sludge for standing filtering removal precipitating after 5min can two Lead ion in secondary removal waste water;
(4) 2h is stopped again by active carbon adsorption equipment through step (3) processed waste water, removes step in waste water (3) acylate not reacted completely and sulfur-bearing, phosphorous high-molecular compound added by and the organic matter in waste water, then with The flow of 20L/h carries out hyperfiltration treatment by the ultrafiltration membrane that aperture is 0.01 μm.
Wherein, the active carbon adsorption equipment is composed in series by 5 drawer type absorbing units, and the drawer type is inhaled Coupon member is arranged in drawer filling active carbon powder as adsorbent using zirconia ceramics fibrous material as substrate It is convenient for changing adsorbent therein for drawer type, guarantees adsorption efficiency.
Wherein, the flocculation aid is polyacrylamide, activated silicic acid, chitosan, aluminium polychloride by quality It is mixed than 7:2:1:1.Polyacrylamide can make waste water by charge neutrality, and bridge formation suction-operated plays flocculation, Er Qieneng By mechanical, physics, chemical effect, adhesive effect is played, the precipitating of sediment is promoted;Activated silicic acid can accelerate coagulation mistake Journey improves batting-unit structure, promotes tiny and loose floccule body to become thick and closely knit, the density of wadding body increased, It adds conventional coagulant to be formed on the basis of tiny alumen ustum, further serves as connection and build bridge, increase the function of collision frequency, thus shape Cheng Geng great, more closely knit alumen ustum are easy to settle removal in sedimentation basin;Chitosan, aluminium polychloride assist polypropylene Amide and activated silicic acid increase it and help solidifying effect.
Wherein, the acylate be sodium citrate, sodium lactate, Sodium p-aminobenzene sulfonat, sodium acetate by 5:4:3:1 matter For amount than the mixture mixed, the sulfur-bearing high-molecular compound is poly- dithioglycol, the phosphorous macromolecule chemical combination Object is poly- quaternary alkylphosphonium salt, and acylate, sulfur-bearing, phosphorous high-molecular compound can improve the deposition of lead ion, improves treatment effeciency.
Wherein, the lead ion reacts with acylate, sulfur-bearing high-molecular compound, phosphorous high-molecular compound Temperature be 50 DEG C, guarantee that lead ion and acylate, sulfur-bearing high-molecular compound, phosphorous high-molecular compound are utmostly sent out Raw reaction, the ultrafiltration membrane are answered by hydrophobic aromatic sulfone polymer, cyclization, ethylene, propylene alternate copolymer equivalent Conjunction forms hollow fiber ultrafiltration membrane, can effectively remove the residuals in waste water, the surface holes of the hollow fiber ultrafiltration membrane Density is 120 hole/cm2, guarantee the treatment effeciency of waste water.
Experimental verification
1. experimental subjects: using the lead waste water that certain ink factory generates as process object, through in ion chromatography detection waste water The content of lead ion is 30g/L, content of organics 100g/L.
2. experimental method: taking 4 parts, every part of 100L of above-mentioned waste water, wherein 3 groups are used as experimental group, 1 group as a control group, real Test group difference through the embodiment of the present invention 1~3 processing method processing, control group handled by traditional chemical precipitation method, located The content of each pollutant component is measured after reason.
3. experimental result: after treatment, each pollutant component content of each group are as follows:
Group Wastewater flow rate/L Lead ion content g/L Content of organics g/L Have without exception
Embodiment 1 100 0.3~0.4 1~3 Nothing
Embodiment 2 100 0.3~.04 1~2 Nothing
Embodiment 3 100 0.3~0.4 1~2 Nothing
Control group 100 0.7~1 2~4 Nothing
4. conclusion: it can be seen that the waste water treatment efficiency height with method treatment of printing ink factory of the invention by above-mentioned data, It is at low cost, it is economical and practical.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations;Although Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used To modify to technical solution documented by previous embodiment or equivalent replacement of some of the technical features;And These are modified or replaceed, the spirit and model of technical solution of the embodiment of the present invention that it does not separate the essence of the corresponding technical solution It encloses.

Claims (1)

1. a kind of processing method of ink factory lead waste water, which is characterized in that the processing method the following steps are included:
(1) pretreated waste water is passed through filter with the amount of 100~200L/h, removes most ink and suspended matter, mistake Enter active carbon adsorption equipment after filter, waste water residence time in active carbon adsorption equipment is 20~30min, passes through active carbon Absorption, decomposition, remove waste water in residual ink;
(2) sodium phosphate powder is added into waste water by the amount of 5~12g/L, the lead ion in waste water and phosphate anion occur instead Lead phosphate precipitating should be generated, flocculation aid is added into waste water by the amount of 0.05~0.1g/L while reaction, promotes lead ion Precipitating, then filtering removal precipitating, carries out the primary removal of lead ion;
(3) it is high that the acylate relative to 0.001~0.003 times of wastewater quality, sulfur-bearing are added in the waste water handled to step (2) The mixture of molecular compound, phosphorous high-molecular compound, the acylate, sulfur-bearing high-molecular compound, phosphorous macromolecule The mass ratio of compound is 5:3:2, contains-COOH (carboxyl) ,-OH (hydroxyl) ,-NH in acylate2(amino) three kinds of functions Group, the molar ratio of three kinds of functional groups are 7:3:1, and the sludge of filtering removal precipitating secondary can remove after 3~5min of standing Lead ion in waste water;
(4) 0.5~2h is stopped again by active carbon adsorption equipment through step (3) processed waste water, removes step in waste water (3) acylate not reacted completely and sulfur-bearing, phosphorous high-molecular compound added by and the organic matter in waste water, then with 10 The flow of~20L/h carries out hyperfiltration treatment by the ultrafiltration membrane that aperture is 0.005~0.01 μm or so;
The active carbon adsorption equipment is composed in series by least five drawer type absorbing unit, and the drawer type adsorbs single Member fills active carbon powder as adsorbent in drawer using zirconia ceramics fibrous material as substrate;
The flocculation aid is polyacrylamide, activated silicic acid, chitosan, aluminium polychloride press the quality of 7:2:1:1 Than mixing;
The acylate be sodium citrate, sodium lactate, Sodium p-aminobenzene sulfonat, sodium acetate it is therein any one or a few Mixture;
The sulfur-bearing high-molecular compound is poly- dithioglycol;
The phosphorous high-molecular compound is poly- quaternary alkylphosphonium salt;
The ultrafiltration membrane is by quality such as hydrophobic aromatic sulfone polymer, cyclization, ethylene, propylene alternate copolymers The hollow fiber ultrafiltration membrane being compounded to form;
The surface hole density of the hollow fiber ultrafiltration membrane is 108~120 hole/cm2
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