CN107986571A - A kind of processing method of the electroplating wastewater containing antimony - Google Patents

A kind of processing method of the electroplating wastewater containing antimony Download PDF

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Publication number
CN107986571A
CN107986571A CN201711362983.3A CN201711362983A CN107986571A CN 107986571 A CN107986571 A CN 107986571A CN 201711362983 A CN201711362983 A CN 201711362983A CN 107986571 A CN107986571 A CN 107986571A
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chitosan
water
brush
outlet
antimony
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CN201711362983.3A
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CN107986571B (en
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叶澄
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Nanjing Boyo Environmental Technology Co., Ltd.
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Hangzhou Qi Cheng Science And Technology Ltd
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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
    • 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
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • 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
    • C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
    • 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
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F2001/007—Processes including a sedimentation step
    • 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
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus
    • C02F2201/007—Modular design
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Sorption (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

The invention discloses a kind of processing method of electroplating wastewater containing antimony, and waste water is successively by sump, coarse rack, primary sedimentation basin, pH value regulating reservoir, chitosan biological catalytic adsorption cleaning system, aeration tank, biological phosphate-eliminating pond, secondary sedimentation tank, water purifying tank processing.The rolling absorption brush that make use of of the invention is attached with chitosan and sargassum thunbergii is selective exposure reaction medium, when the antimony ion in waste water comes into full contact with rolling absorption brush, hydroxyl, carboxyl, amide groups on chitosan and sargassum thunbergii strand can selectivity complex reaction occurs with antimony ion, make the antimony in waste water by sargassum thunbergii efficient absorption, the sargassum thunbergii residue after adsorption reaction is brushed by fixed brush and is allowed to natural subsidence, sludge material is gradually formed, so that the antimony ion in waste water is removed.Meanwhile material used in the system --- chitosan is material of low cost, being readily available with sargassum thunbergii.

Description

A kind of processing method of the electroplating wastewater containing antimony
Technical field
The present invention relates to a kind of processing method of electroplating wastewater containing antimony, belong to the field of waste water treatment in environmental protection.
Background technology
In recent years, antimony has a wide range of applications in non-ferrous metal industry, and the stibium-containing wastewater of factory's discharge is water body antimony pollution Primary pollution source.For example the waste water antimony of the industry such as smelting, printing, ceramics, lead-acid battery, fire retardant, ore dressing, washup discharge contains Measure very high, water pollution is particularly acute.In electroplating industry, sb oxide passes through basic unit's coating material frequently as Ti electrode Material, with the progress of plating, antimony element can progressively intake in waste water.Substantial amounts of antimony enter it is internal, can to respiratory tract, alimentary canal, Crawl, lung, liver produces stimulates and destroy, and can induce cancer, huge to human health damage.Therefore, stibium-containing wastewater is effective Handle very urgent, develop the treatment research of the stibium-containing wastewater of high-efficiency and economic, there is great society, economy and Significance for Environment.
The currently used processing method for removing stibium-containing wastewater has chemical precipitation method, electrolysis, absorption method, ion exchange Method.(1) chemical precipitation method is by first adding vulcanized sodium into stibium-containing wastewater, being precipitated out antimony, then add polyaluminum sulfate Iron, generates iron sulfide and iron hydroxide, and the purpose for removing Antimony in Waste Water is reached using their cohesion and co-precipitation.Although Many advantages, such as being simple and convenient to operate with technique, be economical and practical, but its precipitation slag is difficult to handle, and can cause secondary pollution. (2) electrolysis is to use platinum group oxide or PbO2Make anode, to destroy cyanide, then by antimony ion pH=11 condition Lower flocculation, precipitation, filtering are removed antimony, and this method energy consumption is big, therefore fail to obtain generally in the processing of stibium-containing wastewater Using.(3) absorption method is to utilize porous solid material, antimony+absorption in waste water is removed in solid adsorbent surfaces A kind of method.This method is applied widely to stibium-containing wastewater, will not cause secondary pollution, but absorption choosing of the adsorbent to antimony ion Selecting property is not high.(4) although ion-exchange operating procedure is simple, is easy to regenerate, except antimony effect is good.But the method is inhaled by resin Attached capacity limit, suitable for the low waste water of processing concentration containing antimony, and resin is easy to be poisoned, and processing cost is higher.
The content of the invention
To solve the deficiencies in the prior art, the present invention provides a kind of processing method of electroplating wastewater containing antimony, contain Antimony electroplating wastewater enters sump by waste line, carries out centralized collection herein and preliminarily stabilised is adjusted, the outlet of sump Coarse rack is connected by waste line, the major diameter solid matter in industrial wastewater is removed at this, the outlet of coarse rack, which passes through, gives up Water pipeline connects primary sedimentation basin, and in this insoluble matter in further removing waste water, the outlet of primary sedimentation basin passes through waste water Pipeline connects pH value regulating reservoir, and the pH value range of pH value regulating reservoir water outlet is about 6.0 ~ 8.0, to meet chitosan-living things catalysis Adsorption cleaning system enters the requirement of water pH value, and the outlet of pH value regulating reservoir connects chitosan-living things catalysis by waste line and inhales Attached cleaning system, the sludge material outward transport processing of chitosan-living things catalysis adsorption cleaning system discharge, meanwhile, chitosan-biology The outlet of catalytic adsorption cleaning system connects aeration tank by waste line, herein by aerobic aeration process, makes in waste water Various phosphorus containg substances are converted into orthophosphates, and the outlet of aeration tank connects biological phosphate-eliminating pond by waste line, its effect is The orthophosphates decomposition and inversion in waste water is removed by bioactivity reaction process, the outlet in biological phosphate-eliminating pond passes through waste pipe Line connects secondary sedimentation tank, all removes the remaining insoluble matter in waste water at this, the outlet of secondary sedimentation tank passes through waste water Pipeline connects water purifying tank, and the outlet of water purifying tank will be arranged by waste line outside purification water outlet after treatment；Wherein, shell gathers The pond body of sugar-living things catalysis adsorption cleaning system uses strengthened glass steel material, and pond body left side lower section is equipped with inlet valve and stretches Contracting mud pusher, right side top are equipped with flowing water Valve, and lower right-hand side is equipped with sludge row's mouth, and pond body top is equipped with light steel bracket, thereon 3 groups of totally 9 atomizers are fixed with, pond body is fixedly arranged in the middle of 3 sets and rolls absorption brush, and often set rolls absorption brush left side and is provided with 1 fixed brush, is bonded with rolling absorption brush；Industrial wastewater after pH value adjusting processing is inhaled by chitosan-living things catalysis The inlet valve of lower section enters cleaning system on the left of attached cleaning system, and 3 sets in the middle part of pond body roll absorption brush and start up time Pin rolls, and the chitosan and sargassum thunbergii adhered to thereon comes into full contact with the antimony ion in waste water, passes through chitosan and sargassum thunbergii point The complex reaction occurred with antimony ion of hydroxyl, carboxyl, acid amides based selective in subchain, makes the antimony in waste water by sargassum thunbergii height Effect absorption, the sargassum thunbergii residue after adsorption reaction is brushed and be allowed to natural subsidence to bottom of pond portion, gradual shape by fixed brush afterwards Into sludge material, after promoted by flexible mud pusher, through sludge row's mouth discharge pond body, while brush clean rolling brush through fixed brush Hair continues to do more than clockwise movement to the water surface, sprays chitosan-sargassum thunbergii mixed liquor again by atomizer, adsorbs rolling Brush is regenerated, and is entered again through clockwise movement path in water, is started new adsorption reaction process.
Its chitosan-living things catalysis adsorption cleaning system, its pond body dischargeable capacity are 245m3, it rolls absorption brush brush length 3.5m, the long 10cm of bristle, it is 380V, swing circle 180s that it, which drives the operating voltage of motor,.
Its chitosan-living things catalysis adsorption cleaning system, in its chitosan-sargassum thunbergii mixed liquor, chitosan and sargassum thunbergii Mass concentration be respectively 60.0mg/L and 4.5g/L.
The advantage of the invention is that：
（1）The present invention has broken away from the inherent technology route of the existing electroplating wastewater processing containing antimony, and creative make use of sargassum thunbergii With selection characterization of adsorption of the chitosan to metal ion, especially antimony ion, pass through the hydroxyl on sargassum thunbergii and chitosan molecule chain Efficient complex reaction occurs for the antimony ion in base, carboxyl, amide groups and waste water, can have been given play to significantly for stibium-containing wastewater Adsorption cleaning effect, its antimony ion removal efficiency is up to 99.5%.
（2）Compared with the method for existing processing stibium-containing wastewater, the most preferably applicable pH value range of the system is wider, only needs letter Single enters water pH value regulating measure, so that it may which easily reach system enters the requirement of water pH value.
（3）Present invention utilizes both not only common but also cheap products of chitosan and sargassum thunbergii, operation is greatly reduced In Material Cost, be highly suitable for coastal economy and promoted the use of with industrial comparatively developed regions.
（4）Present invention employs chitosan and sargassum thunbergii absorption Antimony in Waste Water ion means, without using it is any have poison Material is learned, so as to eliminate the risk for introducing pollutant that is new, endangering bigger.
Brief description of the drawings
Fig. 1 is the equipment schematic diagram of the present invention.
In figure：1- sumps, 2- coarse racks, 3- primary sedimentation basins, 4-pH values regulating reservoir, 5- chitosans-living things catalysis are inhaled Attached cleaning system, 6- aeration tanks, 7- biological phosphate-eliminatings pond, 8- secondary sedimentation tanks, 9- water purifying tanks
Fig. 2 is the schematic diagram of chitosan-living things catalysis adsorption cleaning system.
51- glass reinforced plastics pond body, the light steel brackets of 52-, 53- atomizers, 54- roll absorption brush, 55- fixed brushes, 56- Inlet valve, 57- flowing water Valves, 58- sludge row mouth, 59- stretch mud pusher.
Embodiment
The processing method of removal heavy metals in industrial wastewater as shown in Figure 1, electroplating wastewater containing antimony are passed through useless by waste water Water pipeline enters sump 1, carries out centralized collection herein and preliminarily stabilised is adjusted, the outlet of sump 1 is connected by waste line Coarse rack 2 is connect, the major diameter solid matter in industrial wastewater is removed at this, the outlet of coarse rack 2 connects one by waste line Secondary sedimentation basin 3, in this insoluble matter in further removing waste water, the outlet 3 of primary sedimentation basin connects pH by waste line It is worth regulating reservoir 4, waste water is neutralized and carries out the accurate adjusting of pH value, the pH value range of 4 water outlet of pH value regulating reservoir herein For 6.0 ~ 8.0, to meet that the water pH value that enters of chitosan-living things catalysis adsorption cleaning system 5 requires, the outlet of pH value regulating reservoir 4 Chitosan-living things catalysis adsorption cleaning system 5 is connected by waste line, chitosan-living things catalysis adsorption cleaning system 5 is discharged Sludge material outward transport processing, meanwhile, the outlet of chitosan-living things catalysis adsorption cleaning system 5 passes through waste line connection and exposes Gas pond 6, herein by aerobic aeration process, makes the various nitrogen substances in waste water be converted into nitrate nitrogen, aeration tank 6 goes out Mouthful biological phosphate-eliminating pond 7 is connected by waste line, it is by bioactivity reaction process that it, which is acted on, various is contained make in waste water Phosphorus substance is converted into orthophosphates, and the outlet in biological phosphate-eliminating pond 7 connects secondary sedimentation tank 8 by waste line, herein will be useless Remaining insoluble matter in water all removes, and the outlet of secondary sedimentation tank 8 connects water purifying tank 9 by waste line, water purifying tank 9 Outlet will be arranged by waste line outside the purification water outlet after the system is handled；Wherein, chitosan-living things catalysis adsorption cleaning The pond body 51 of system 5 uses strengthened glass steel material, and pond body dischargeable capacity is 245m3, pond body left side lower section is equipped with inlet valve 56 and flexible mud pusher 59, flowing water Valve 57 be housed above right side, lower right-hand side is equipped with sludge row's mouth 58, and pond body top is equipped with gently Steel bracket 52, is fixed with 3 groups of totally 9 atomizers 53 thereon, and pond body is fixedly arranged in the middle of 3 sets and rolls absorption brush 54, brushes long 3.5m, The long 10cm of bristle, it is 380V, swing circle 180s that it, which drives the operating voltage of motor, and often set, which rolls, adsorbs each peace in the left side of brush 54 Equipped with 1 fixed brush 55, it is bonded with rolling absorption brush 54；Waste water after pH value adjusting processing is urged by chitosan-biology The inlet valve 56 for changing the left side of adsorption cleaning system 5 lower section enters cleaning system, and 3 sets in the middle part of pond body roll absorption brush 54 Start to roll clockwise, the chitosan and sargassum thunbergii adhered to thereon come into full contact with the antimony ion in waste water, by chitosan and The complex reaction occurred with antimony ion of hydroxyl, carboxyl, acid amides based selective on sargassum thunbergii strand, makes the antimony quilt in waste water Sargassum thunbergii efficient absorption, the sargassum thunbergii residue after adsorption reaction is brushed and be allowed to natural subsidence to bottom of pond by fixed brush 55 afterwards Portion, gradually forms sludge material, after promoted by flexible mud pusher 59, discharge pond body through sludge row's mouth 58, meanwhile, through fixed brush 55 Brush clean rolling bristle to continue to do more than clockwise movement to the water surface, chitosan-rat-tail is sprayed by atomizer 53 again Algae mixed liquor, is regenerated rolling absorption brush 54, enters again through clockwise movement path in water, start new adsorption reaction Process；The effect of wherein pH value regulating reservoir 4 is will to be adjusted by the pH value of waste water of primary sedimentation to 6.8 ~ 7.2, to meet that shell gathers Sugar-living things catalysis adsorption cleaning system 5 enters the requirement of water pH value；Wherein, in chitosan-sargassum thunbergii mixed liquor, chitosan and mouse The mass concentration of tail algae is respectively 60.0mg/L and 4.5g/L.
Electroplating wastewater containing antimony after being handled by the system, its antimony removal efficiency is up to 99.5%.

Claims (1)

1. the processing method of a kind of electroplating wastewater containing antimony, it is characterised in that electroplating wastewater containing antimony is entered by waste line to catchment Well, carries out centralized collection herein and preliminarily stabilised is adjusted, and the outlet of sump connects coarse rack by waste line, removes herein Major diameter solid matter in industrial wastewater, the outlet of coarse rack connect primary sedimentation basin by waste line, herein further The insoluble matter in waste water is removed, the outlet of primary sedimentation basin connects pH value regulating reservoir by waste line, and pH value regulating reservoir goes out The pH value range of water is about 6.0 ~ 8.0, to meet that the water pH value that enters of chitosan-living things catalysis adsorption cleaning system requires, pH value The outlet of regulating reservoir connects chitosan-living things catalysis adsorption cleaning system by waste line, and chitosan-living things catalysis absorption is net The sludge material outward transport processing of change system discharge, meanwhile, the outlet of chitosan-living things catalysis adsorption cleaning system passes through waste pipe Line connects aeration tank, herein by aerobic aeration process, the various phosphorus containg substances in waste water is converted into orthophosphates, is aerated The outlet in pond connects biological phosphate-eliminating pond by waste line, and it is by the positive phosphorus in waste water by bioactivity reaction process that it, which is acted on, Hydrochlorate decomposition and inversion removes, and the outlet in biological phosphate-eliminating pond connects secondary sedimentation tank by waste line, will be surplus in waste water at this Remaining insoluble matter all removes, and the outlet of secondary sedimentation tank connects water purifying tank by waste line, and the outlet of water purifying tank, which passes through, gives up Water pipeline will be arranged outside purification water outlet after treatment；Wherein, the pond body of chitosan-living things catalysis adsorption cleaning system is using strong Change glass steel material, pond body dischargeable capacity is 245m3, lower section is equipped with inlet valve and flexible mud pusher on the left of pond body, on right side Side is equipped with flowing water Valve, and lower right-hand side is equipped with sludge row's mouth, and pond body top is equipped with light steel bracket, is fixed with 3 groups of totally 9 mists thereon Change nozzle, pond body is fixedly arranged in the middle of 3 sets and rolls absorption brush, rolls absorption and brush long 3.5m, the long 10cm of bristle, and often set rolls absorption brush Left side is respectively provided with 1 fixed brush, is bonded with rolling absorption brush；Industrial wastewater after pH value adjusting processing is gathered by shell The inlet valve of lower section enters cleaning system on the left of sugar-living things catalysis adsorption cleaning system, and 3 sets in the middle part of pond body, which roll, to be inhaled Attached brush starts to roll clockwise, and the chitosan and sargassum thunbergii adhered to thereon comes into full contact with the antimony ion in waste water, gathered by shell The complex reaction occurred with antimony ion of sugar and the hydroxyl on sargassum thunbergii strand, carboxyl, acid amides based selective, makes in waste water Sargassum thunbergii residue after adsorption reaction is brushed and is allowed to natural subsidence to pond by sargassum thunbergii efficient absorption by antimony by fixed brush afterwards Bottom, gradually forms sludge material, after promoted by flexible mud pusher, through sludge row's mouth discharge pond body, while brush through fixed brush Clean rolling bristle continues to do more than clockwise movement to the water surface, sprays chitosan-sargassum thunbergii mixing again by atomizer The mass concentration of liquid, chitosan and sargassum thunbergii is respectively 60.0mg/L and 4.5g/L, is regenerated rolling absorption brush, passes through again Clockwise movement path enters in water, starts new adsorption reaction process.
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