CN105541049A - Treatment system for removing anionic surfactants in domestic wastewater - Google Patents

Treatment system for removing anionic surfactants in domestic wastewater Download PDF

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Publication number
CN105541049A
CN105541049A CN201610097972.6A CN201610097972A CN105541049A CN 105541049 A CN105541049 A CN 105541049A CN 201610097972 A CN201610097972 A CN 201610097972A CN 105541049 A CN105541049 A CN 105541049A
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tank
separator tank
hall effect
outlet
negatively charged
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CN105541049B (en
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李程伟
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Yancheng Lanfeng Environmental Engineering Technology Co Ltd
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FUYANG HONGXIANG TECHNOLOGY SERVICES Co Ltd
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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
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • 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
    • C02F1/48Treatment of water, waste water, or sewage with magnetic or electric fields
    • 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
    • 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
    • C02F1/66Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • 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
    • C02F2101/301Detergents, surfactants
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/02Aerobic processes

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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 Electricity Or Magnetism (AREA)

Abstract

The invention discloses a treatment system for removing anionic surfactants in domestic wastewater. The treatment system comprises a water collection well, a coarse screen, a primary settling pond, a pH value regulating pond, an anion-Hall effect separating tank, an aerated nitration pond, a biological denitrogenation pond, a secondary settling pond, a water purification pond and the like. According to the system, the electromagnetism induction phenomenon called the Hall effect is utilized creatively, and when the current perpendicular to an external magnetic field is conducted in a wastewater trough, a current carrier will deflect, and an additional electric field will be generated in the direction perpendicular to the current and the magnetic field. A potential difference can be generated between the upper portion and the lower portion of the trough just by arranging an electromagnet and a discharge electrode at proper positions respectively to make a magnetic induction line and the current pass through the trough at a right angle in two horizontal directions respectively, and then anionic surface active substance ions in the wastewater move downwards to gather at the bottom of the trough and gradually form sludge, so that the anionic surfactants are removed out of the wastewater.

Description

A kind for the treatment of system removing anion surfactant in sanitary wastewater
Technical field
The present invention relates to a kind for the treatment of system removing anion surfactant in sanitary wastewater, belong to the field of waste water treatment in environment protection.
Background technology
Tensio-active agent (surfactant) refers to have certain character, structure and interfacial adsorption performance, significantly can reduce a class material of solvent surface tension or liquid-liquid, liquid-liquid/solid interface tension force.Its english name surfactant is exactly the compound word of surfaceactiveagent, represents " tensio-active agent can make the material of surface (or interface) increased activity exactly ".Namely when surfactant dissolves is after water, according to whether generating ion and electrically, ionogenic surfactant and nonionic surface active agent is divided into.By the dissociative qualitative classification of polar group, tensio-active agent has ionogenic surfactant, nonionic surface active agent, special surface active agent.
In recent years, China's chemosynthesis anion surfactant industrial development is rapid, and the output of anion surfactant increases year by year.And namely the anion surfactant of the overwhelming majority being discharged in the natural water such as river, ocean without dealing carefully with after using at present, often causing water pollution and occurring the horizontal scene flown of foam, consuming the dissolved oxygen in water simultaneously, have impact on Water quality.Although the anion surfactant that biodegradability is poor at present is eliminated substantially, widely used anion surfactant is all biodegradable, even but the anion surfactant of lower concentration also can produce a large amount of foam, not only have impact on the aesthetic feeling of natural water view, and its bio-toxicity also directly threatens the existence of aquatic animals and plants.One of important source of pollution of environment water are the anion surfactants in urban life waste water.
At present, existing sanitary wastewater anionic surfactant treatment method can be divided into physico-chemical processes and the large class of biological process two.
(1) physico-chemical processes: conventional physico-chemical processes mainly comprises absorption method, foaming process, Coagulation Method, membrane separation process, micro-electrolysis method, catalytic oxidation etc., the general adaptability of these methods is stronger, selectivity is wide, but treatment effect is not ideal enough, and processing cost is higher.
(2) biological process: Biochemical method is containing surface active agent wastewater, utilize microorganism can using organism as nutritive substance, make its part be absorbed into the organic composition in microbe or be proliferated into new microorganism, rest part can be resolved into a kind of method of simple organic or inorganic material by microbiological oxidation.Its treatment effect is better, but there is the shortcoming such as technical sophistication, treatment effect instability.
Because above-mentioned traditional treatment method exists the shortcomings such as cost is high, technical sophistication, treatment effect are unstable, therefore, be necessary to break away from existing treatment technology thinking, hew out the new way of process sanitary wastewater anion surfactant, and then develop a kind of sanitary wastewater anionic surfactant treatment technology of new type.
Summary of the invention
For solving the deficiencies in the prior art, the invention provides a kind for the treatment of system removing anion surfactant in sanitary wastewater, this system comprises pump well, coarse rack, primary sedimentation basin, pH value equalizing tank, negatively charged ion-Hall effect separator tank, aeration nitrification tank, biological denitrificaion pond, secondary sedimentation basins, water purifying tank etc., wherein, sanitary wastewater containing anion surfactant enters pump well by waste line, centralized collection and preliminarily stabilised adjustment is carried out at this, the outlet of pump well connects coarse rack by waste line, the major diameter solid matter in sanitary wastewater is removed at this, the outlet of coarse rack connects primary sedimentation basin by waste line, the insoluble substance in waste water is removed further at this, the outlet of primary sedimentation basin connects pH value equalizing tank by waste line, waste water carries out neutralizing treatment at this and carries out the fine adjustment of pH value, the pH value range of pH value equalizing tank water outlet is 6.0 ~ 7.0, the requirement of water pH value is entered with what meet negatively charged ion-Hall effect separator tank, the outlet of pH value equalizing tank connects negatively charged ion-Hall effect separator tank by waste line, the outlet of negatively charged ion-Hall effect separator tank connects aeration nitrification tank by waste line, at this by aerobic aeration process, the various nitrogenous substancess in waste water are made all to be converted into nitrate nitrogen, the outlet of aeration nitrification tank connects biological denitrificaion pond by waste line, its effect is by biological activity reaction process, by the nitrate nitrogen decomposition and inversion in waste water, thus removal nitrate nitrogen, the outlet in biological denitrificaion pond is by waste line connecting secondary settling tank, at this, residue insoluble substance in waste water is all removed, the outlet of secondary sedimentation basins connects water purifying tank by waste line, purification water outlet after native system process is arranged outward by waste line by the outlet of water purifying tank, wherein, negatively charged ion-Hall effect separator tank adopts ceramic insulation material, separator tank left end and right-hand member medium position are respectively equipped with an electrode under water, separator tank periphery is horizontally disposed with a frame-type DC electromagnet and surrounds cell body three limit, enable magnetic induction line horizontal through separator tank, on the left of separator tank, below is provided with inlet valve, is provided with flowing water Valve above right side, and lower right-hand side is provided with mud row mouth, the sanitary wastewater of (after process, pH value is 6.0 ~ 7.0) after process is regulated to enter separator tank inside by the inlet valve of below on the left of negatively charged ion-Hall effect separator tank through pH value, magnetic field in now frame-type DC electromagnet energising generation one horizontal direction, simultaneously two of the separator tank left and right sides under water electrode start electric discharge, produce one in the horizontal direction perpendicular to the electric current of magnetic induction line, now, an additional electric field can be produced perpendicular to (i.e. vertical direction) on magnetic field and sense of current, separator tank above-below direction is made to produce potential difference, thus make the anionic surface active substances ion in waste water that downward motion occur, and enrichment bottom separator tank, form sludge material gradually, regularly the sludge material accumulated bottom separator tank can be discharged via mud row mouth, and do outward transport process, wherein, the electrode under water of negatively charged ion-Hall effect separator tank left and right sides can connect the direct current of 380V through rotproofing, in separator tank, produce a steady current, wherein the effect of pH value equalizing tank is that the waste water ph through primary sedimentation is adjusted to 6.0 ~ 7.0, enters the requirement of water pH value with what meet negatively charged ion-Hall effect separator tank, wherein, the effect of aeration nitrification tank is by aerobic aeration process, makes the various nitrogenous substancess in waste water all be converted into nitrate nitrogen, wherein, the effect in biological denitrificaion pond is by biological activity reaction process, by the nitrate nitrogen decomposition and inversion in waste water, thus removes nitrate nitrogen.
The useful volume of its negatively charged ion-Hall effect separator tank is 230m 3, its direct supply of electrode connection under water, its operating voltage is 380V, and work-ing life is greater than 9000h.
The frame-type DC electromagnet of its negatively charged ion-Hall effect separator tank periphery operationally accesses direct current, and its operating voltage is 380V, can produce the electromagnetic field that magnetic induction is 30T.
The invention has the advantages that:
(1) native system has broken away from existing sanitary wastewater anion surfactant purifying treatment principle, creationaryly make use of a kind of electromagnetic induction phenomenon being called Hall effect, electro-magnet and discharge electrode are arranged on suitable position respectively, make magnetic induction line direction and the sense of current prolong two horizontal directions respectively and at right angles pass through tank, potential difference can be produced at tank above-below direction, thus make the anionic surface active substances ion in waste water that downward motion occur, thus enrichment bottom separator tank, form sludge material gradually, thus anion surfactant is removed from waste water.Its anion surfactant removal efficiency can reach 99.0%
(2) native system have employed electrode discharge design under water, makes electric current abundant conducting in waste water, improves separating reaction efficiency, improve the processing power of whole system.
(3) native system is without the need to using any chemical agent, thus eliminates the risk introducing new, that harm is larger pollutent.
(4) native system principle is simple, and design and construction cost is lower, and treatment effect is better, and operation expense is very low, is conducive to applying on a large scale.
Accompanying drawing explanation
Fig. 1 is equipment schematic diagram of the present invention.
In figure: 1-pump well, 2-coarse rack, 3-primary sedimentation basin, 4-pH value equalizing tank, 5-negatively charged ion-Hall effect separator tank, 6-aeration nitrification tank, 7-biological denitrificaion pond, 8-secondary sedimentation basins, 9-water purifying tank
Fig. 2 is the schematic diagram of negatively charged ion-Hall effect separator tank.
51-is electrode, 52-frame-type DC electromagnet, 53-ceramic insulation cell body, 54-inlet valve, 55-flowing water Valve, 56-mud row mouth under water.
Embodiment
The treatment system of anion surfactant in removal sanitary wastewater as shown in Figure 1, this system comprises pump well 1, coarse rack 2, primary sedimentation basin 3, pH value equalizing tank 4, negatively charged ion-Hall effect separator tank 5, aeration nitrification tank 6, biological denitrificaion pond 7, secondary sedimentation basins 8, water purifying tank 9 etc., wherein, sanitary wastewater containing anion surfactant enters pump well 1 by waste line, centralized collection and preliminarily stabilised adjustment is carried out at this, the outlet of pump well 1 connects coarse rack 2 by waste line, the major diameter solid matter in sanitary wastewater is removed at this, the outlet of coarse rack 2 connects primary sedimentation basin 3 by waste line, the insoluble substance in waste water is removed further at this, the outlet of primary sedimentation basin 3 connects pH value equalizing tank 4 by waste line, waste water carries out neutralizing treatment at this and carries out the fine adjustment of pH value, the pH value range of pH value equalizing tank 4 water outlet is 6.0 ~ 7.0, the requirement of water pH value is entered with what meet negatively charged ion-Hall effect separator tank 5, the outlet of pH value equalizing tank 4 connects negatively charged ion-Hall effect separator tank 5 by waste line, the outlet of negatively charged ion-Hall effect separator tank 5 connects aeration nitrification tank 6 by waste line, at this by aerobic aeration process, the various nitrogenous substancess in waste water are made all to be converted into nitrate nitrogen, the outlet of aeration nitrification tank 6 connects biological denitrificaion pond 7 by waste line, its effect is by biological activity reaction process, by the nitrate nitrogen decomposition and inversion in waste water, thus removal nitrate nitrogen, the outlet in biological denitrificaion pond 7 is by waste line connecting secondary settling tank 8, at this, residue insoluble substance in waste water is all removed, the outlet of secondary sedimentation basins 8 connects water purifying tank 9 by waste line, purification water outlet after native system process is arranged outward by waste line by the outlet of water purifying tank 9, wherein, negatively charged ion-Hall effect separator tank 5 adopts ceramic insulation material, separator tank left end and right-hand member medium position are respectively equipped with an electrode 51 under water, separator tank periphery is horizontally disposed with a frame-type DC electromagnet 52 and surrounds cell body three limit, enable magnetic induction line horizontal through separator tank, on the left of separator tank, below is provided with inlet valve 54, is provided with flowing water Valve 55 above right side, and lower right-hand side is provided with mud row mouth 56, the sanitary wastewater of (after process, pH value is 6.0 ~ 7.0) after process is regulated to enter separator tank inside by the inlet valve 54 of below on the left of negatively charged ion-Hall effect separator tank 5 through pH value, now frame-type DC electromagnet 52 is energized the magnetic field in generation one horizontal direction, simultaneously two of the separator tank left and right sides under water electrode 51 start electric discharge, produce one in the horizontal direction perpendicular to the electric current of magnetic induction line, now, an additional electric field can be produced perpendicular to (i.e. vertical direction) on magnetic field and sense of current, separator tank above-below direction is made to produce potential difference, thus make the anionic surface active substances ion in waste water that downward motion occur, and enrichment bottom separator tank, form sludge material gradually, regularly the sludge material accumulated bottom separator tank can be discharged via mud row mouth 56, and do outward transport process, wherein, the electrode under water 51 of negatively charged ion-Hall effect separator tank 5 left and right sides can connect the direct current of 380V through rotproofing, in separator tank, produce a steady current, wherein the effect of pH value equalizing tank 4 is that the waste water ph through primary sedimentation is adjusted to 6.0 ~ 7.0, enters the requirement of water pH value with what meet negatively charged ion-Hall effect separator tank 5, wherein, the effect of aeration nitrification tank 6 is by aerobic aeration process, makes the various nitrogenous substancess in waste water all be converted into nitrate nitrogen, wherein, the effect in biological denitrificaion pond 7 is by biological activity reaction process, by the nitrate nitrogen decomposition and inversion in waste water, thus removes nitrate nitrogen.
By the sanitary wastewater after native system process, its anion surfactant removal efficiency can reach 99.0%.
Remove the treatment system of anion surfactant in sanitary wastewater, the useful volume of its negatively charged ion-Hall effect separator tank 5 is 230m 3, its under water electrode 51 connect direct supply, its operating voltage is 380V, and work-ing life is greater than 9000h.
Remove the treatment system of anion surfactant in sanitary wastewater, the frame-type DC electromagnet 52 of its negatively charged ion-Hall effect separator tank 5 periphery operationally accesses direct current, and its operating voltage is 380V, can produce the electromagnetic field that magnetic induction is 30T.

Claims (3)

1. remove the treatment system of anion surfactant in sanitary wastewater for one kind, it is characterized in that, this system comprises pump well, coarse rack, primary sedimentation basin, pH value equalizing tank, negatively charged ion-Hall effect separator tank, aeration nitrification tank, biological denitrificaion pond, secondary sedimentation basins, water purifying tank etc., wherein, sanitary wastewater containing anion surfactant enters pump well by waste line, the outlet of pump well connects coarse rack by waste line, the outlet of coarse rack connects primary sedimentation basin by waste line, the outlet of primary sedimentation basin connects pH value equalizing tank by waste line, the outlet of pH value equalizing tank connects negatively charged ion-Hall effect separator tank by waste line, mud containing the anion surfactant outward transport process of discharging in negatively charged ion-Hall effect separator tank, simultaneously, the outlet of negatively charged ion-Hall effect separator tank connects aeration nitrification tank by waste line, the outlet of aeration nitrification tank connects biological denitrificaion pond by waste line, the outlet in biological denitrificaion pond is by waste line connecting secondary settling tank, the outlet of secondary sedimentation basins connects water purifying tank by waste line, purification water outlet after native system process is arranged outward by waste line by the outlet of water purifying tank, negatively charged ion-Hall effect separator tank adopts ceramic insulation material, separator tank left end and right-hand member medium position are respectively equipped with an electrode under water, separator tank periphery is horizontally disposed with a frame-type DC electromagnet and surrounds cell body three limit, enable magnetic induction line horizontal through separator tank, on the left of separator tank, below is provided with inlet valve, top, right side is provided with flowing water Valve, and lower right-hand side is provided with mud row mouth, through pH value regulate process after pH value be 6.0 ~ 7.0 sanitary wastewater by the left of negatively charged ion-Hall effect separator tank below inlet valve enter separator tank inside, magnetic field in now frame-type DC electromagnet energising generation one horizontal direction, simultaneously two of the separator tank left and right sides under water electrode start electric discharge, produce one in the horizontal direction perpendicular to the electric current of magnetic induction line, now perpendicular to magnetic field and sense of current producing an additional electric field, separator tank above-below direction is made to produce potential difference, thus make the anionic surface active substances ion in waste water that downward motion occur, and enrichment bottom separator tank, form sludge material gradually, thus anion surfactant is removed from waste water, the electrode under water of negatively charged ion-Hall effect separator tank left and right sides, through rotproofing, connects the direct current of 380V.
2. the treatment system of anion surfactant in removal sanitary wastewater according to claim 1, it is characterized in that, the volume of negatively charged ion-Hall effect separator tank is 230m 3, its direct supply of electrode connection under water, its operating voltage is 380V.
3. the treatment system of anion surfactant in removal sanitary wastewater according to claim 1, it is characterized in that, the frame-type DC electromagnet of negatively charged ion-Hall effect separator tank periphery operationally accesses direct current, its operating voltage is 380V, can produce the electromagnetic field that magnetic induction is 30T.
CN201610097972.6A 2016-02-23 2016-02-23 The processing system of anion surfactant in a kind of removal sanitary wastewater Active CN105541049B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107311386A (en) * 2017-08-25 2017-11-03 南京工业大学 A kind of processing method of nonionic surfactant waste water

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