CN105731725A - Treatment method for removing anionic surfactant in domestic wastewater - Google Patents

Treatment method for removing anionic surfactant in domestic wastewater Download PDF

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Publication number
CN105731725A
CN105731725A CN201610097971.1A CN201610097971A CN105731725A CN 105731725 A CN105731725 A CN 105731725A CN 201610097971 A CN201610097971 A CN 201610097971A CN 105731725 A CN105731725 A CN 105731725A
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tank
separating tank
water
anion
outlet
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CN201610097971.1A
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CN105731725B (en
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李程伟
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Guangzhou green company
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FUYANG HONGXIANG TECHNOLOGY SERVICES Co Ltd
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Priority to CN201810059184.7A priority patent/CN108178452A/en
Publication of CN105731725A publication Critical patent/CN105731725A/en
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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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
    • 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
    • C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
    • C02F1/484—Treatment of water, waste water, or sewage with magnetic or electric fields using electromagnets
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • 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
    • C02F2101/30—Organic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/301—Detergents, surfactants
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
    • 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
    • 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

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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 method for removing an anionic surfactant in domestic wastewater. The domestic wastewater containing the anionic surfactant sequentially passes through a water collecting well, a coarse screen, a first-time sedimentation basin, a pH value adjusting tank, an anion-Hall effect separating tank, an aerated nitrification tank, a biological denitrification tank, a secondary sedimentation basin and a water purification tank. According to the method, the electromagnetism induction phenomenon called as the Hall effect is creatively utilized, and when electric currents are transmitted in a wastewater tank in the mode of being perpendicular to an outer magnetic field, a current carrier deflects, and an additional electric field is generated in the direction perpendicular to the electric currents and the magnetic field; an electric potential difference is generated in the vertical direction of the water tank, therefore, anionic surface active material anions in the wastewater move downwards to be gathered at the bottom of the water tank to gradually form sludge, and then the anionic surfactant is removed from the wastewater.

Description

A kind of remove the processing method of anion surfactant in sanitary wastewater
Technical field
The present invention relates to a kind of remove the processing method of anion surfactant in sanitary wastewater, belong to the field of waste water treatment in environmental conservation.
Background technology
Surfactant (surfactant) refers to have certain character, structure and Interfacial Adsorption performance, can significantly reduce solvent surface tension or liquid liquid, a class material of liquid-solid interfacial tension.Its english name surfactant is exactly the compound word of surfaceactiveagent, represents " material that surfactant can make surface (or interface) increased activity exactly ".I.e. after surfactant is dissolved in water, according to whether generate ion and electrically, it is divided into ionic surfactant and nonionic surfactant.By the dissociative qualitative classification of polar group, surfactant has ionic surfactant, nonionic surfactant, special surfactant.
In recent years, China's chemosynthesis anion surfactant industrial development is rapid, and the yield of anion surfactant increases year by year.And be i.e. discharged in the natural water such as river, ocean without dealing carefully with after at present the anion surfactant of the overwhelming majority uses, often result in water pollution and the horizontal scene flown of foam occurs, consuming the dissolved oxygen in water simultaneously, have impact on Water quality.Although the anion surfactant that biodegradability is poor at present is eliminated the most substantially, widely used anion surfactant is the most biodegradable, even but the anion surfactant of low 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 the most directly threatens the existence of aquatic animals and plants.One of important polluter of environment water is the anion surfactant in urban life waste water.
At present, existing sanitary wastewater anionic surfactant treatment method can be divided into physical-chemical process and the big class of bioanalysis two.
(1) physical-chemical process: conventional physical-chemical process mainly includes absorption method, foam method, Coagulation Method, membrane separation process, micro-electrolysis method, catalytic oxidation etc., the general adaptability of these methods is relatively strong, and selectivity is wide, but treatment effect is not ideal enough, and processing cost is higher.
(2) bioanalysis: Biochemical method contains surface active agent wastewater, it is to utilize the microorganism can be using Organic substance as nutrient substance, making organic principle that one part is absorbed in microbial body or be proliferated into new microorganism, remainder can be resolved into a kind of method of simple organic or inorganic material by microbiological oxidation.Its treatment effect is preferable, but there is the shortcoming such as technical sophistication, treatment effect instability.
There is the shortcomings such as cost height, technical sophistication, treatment effect instability due to above-mentioned traditional treatment method, therefore, it is necessary to break away from existing treatment technology thinking, hew out the new way processing sanitary wastewater anion surfactant, and then develop the sanitary wastewater anionic surfactant treatment technology of a kind of new type.
Summary of the invention
nullFor solving the deficiencies in the prior art，The invention provides and a kind of remove the processing method of anion surfactant in sanitary wastewater，Sanitary wastewater containing anion surfactant enters sump by waste line，Centralized collection and preliminarily stabilised regulation is carried out at this，The outlet of sump 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 matter in waste water is removed further at this，The outlet of primary sedimentation basin connects pH value regulating reservoir by waste line，Waste water is neutralized process and carries out pH value regulation at this，The pH value range of water outlet is about 6.0 ~ 7.0，The outlet of pH value regulating reservoir connects anion-Hall effect separating tank by waste line，The outlet of anion-Hall effect separating tank connects aeration nitrification tank by waste line，At this by aerobic aeration process，The various nitrogen substances 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 course of reaction，By the nitrate nitrogen decomposition and inversion in waste water，Thus remove nitrate nitrogen，The outlet in biological denitrificaion pond is by waste line connecting secondary sedimentation tank，At this, residue insoluble matter in waste water is all removed，The outlet of secondary sedimentation tank connects water purifying tank by waste line，Exporting of water purifying tank is arranged outside the purification water outlet after being processed by waste line；Wherein, anion-Hall effect separating tank uses ceramic insulation material, separating tank left end and right-hand member medium position are respectively equipped with an electrode under water, separating tank periphery is horizontally disposed with a frame-type DC electromagnet and surrounds cell body three limit, enable magnetic induction line horizontal through separating tank, on the left of separating tank, lower section is provided with inlet valve, and right side is arranged over flowing water Valve, and lower right-hand side is provided with mud row's mouth；Sanitary wastewater after pH value regulation processes enters inside separating tank by the inlet valve of lower section on the left of anion-Hall effect separating tank, now frame-type DC electromagnet energising produces the magnetic field in a horizontal direction, concurrently separate two of the groove left and right sides under water electrode start electric discharge, produce an electric current being perpendicular to magnetic induction line in the horizontal direction, now it is perpendicular in magnetic field and sense of current to produce an additional electric field, separating tank above-below direction is made to produce electric potential difference, so that there is downward motion in the anionic surface active substances ion in waste water, and be enriched with bottom separating tank, gradually form sludge material, periodically the sludge material accumulated bottom separating tank can be discharged via mud row's mouth, and do outward transport process；Wherein, the electrode under water of anion-Hall effect separating tank left and right sides produces a stabling current in separating tank.
The dischargeable capacity of its anion-Hall effect separating tank is 230m3, its DC source of electrode connection under water, its running voltage is 380V, and service life is more than 9000h.
The frame-type DC electromagnet of its anion-Hall effect separating tank periphery operationally accesses unidirectional current, and its running voltage is 380V, can produce the electromagnetic field that magnetic induction is 30T.
It is an advantage of the current invention that:
(1) this method has broken away from existing sanitary wastewater anion surfactant purified treatment principle, creative make use of a kind of electromagnetic induction phenomenon being referred to as Hall effect, electric magnet and sparking electrode are respectively arranged on suitable position, make magnetic induction line direction and the sense of current prolong two horizontal directions respectively and at right angles pass through tank, electric potential difference can be produced at tank above-below direction, so that there is downward motion in the anionic surface active substances ion in waste water, thus be enriched with bottom separating tank, gradually form sludge material, thus anion surfactant is removed from waste water.Its anion surfactant removal efficiency is up to 99.0%
(2) this method have employed electrode discharge design under water, makes electric current sufficiently conductive in waste water, improves separating reaction efficiency, improves the disposal ability of whole system.
(3) this method is without using any chemical agent, thus eliminates the risk introducing the pollutant new, harm is bigger.
(4) this method principle is simple, and design and construction cost is relatively low, and treatment effect is preferable, and operation expense is the lowest, is conducive to popularization and application on a large scale.
Accompanying drawing explanation
Fig. 1 is the equipment schematic diagram of the present invention.
In figure: 1-sump, 2-coarse rack, 3-primary sedimentation basin, 4-pH value regulating reservoir, 5-anion-Hall effect separating tank, 6-aeration nitrification tank, 7-biological denitrificaion pond, 8-secondary sedimentation tank, 9-water purifying tank
Fig. 2 is the schematic diagram of anion-Hall effect separating tank.
51-electrode under water, 52-frame-type DC electromagnet, 53-ceramic insulation cell body, 54-inlet valve, 55-flowing water Valve, 56-mud row's mouth.
Detailed description of the invention
nullThe processing method of anion surfactant in removal sanitary wastewater as shown in Figure 1，Sanitary wastewater containing anion surfactant enters sump 1 by waste line，Centralized collection and preliminarily stabilised regulation is carried out at this，The outlet of sump 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 matter in waste water is removed further at this，The outlet of primary sedimentation basin 3 connects pH value regulating reservoir 4 by waste line，Waste water is neutralized the accurate regulation processing and carrying out pH value at this，The pH value range of pH value regulating reservoir 4 water outlet is 6.0 ~ 7.0，Water pH value requirement is entered with meet anion-Hall effect separating tank 5，The outlet of pH value regulating reservoir 4 connects anion-Hall effect separating tank 5 by waste line，The outlet of anion-Hall effect separating tank 5 connects aeration nitrification tank 6 by waste line，At this by aerobic aeration process，The various nitrogen substances 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 course of reaction，By the nitrate nitrogen decomposition and inversion in waste water，Thus remove nitrate nitrogen，The outlet in biological denitrificaion pond 7 is by waste line connecting secondary sedimentation tank 8，At this, residue insoluble matter in waste water is all removed，The outlet of secondary sedimentation tank 8 connects water purifying tank 9 by waste line，The outlet of water purifying tank 9 will be arranged outside the purification water outlet after native system processes by waste line；Wherein, anion-Hall effect separating tank 5 uses ceramic insulation material, separating tank left end and right-hand member medium position are respectively equipped with electrode 51 under water, separating tank periphery is horizontally disposed with a frame-type DC electromagnet 52 and surrounds cell body three limit, enable magnetic induction line horizontal through separating tank, on the left of separating tank, lower section is provided with inlet valve 54, and right side is arranged over flowing water Valve 55, and lower right-hand side is provided with mud row's mouth 56；nullAfter pH value regulation processes, the sanitary wastewater of (after process, pH value is 6.0 ~ 7.0) is entered inside separating tank by the inlet valve 54 of lower section on the left of anion-Hall effect separating tank 5，Now frame-type DC electromagnet 52 energising produces the magnetic field in a horizontal direction，Concurrently separate two of the groove left and right sides under water electrode 51 start electric discharge，Produce an electric current being perpendicular to magnetic induction line in the horizontal direction，Now，It is perpendicular in magnetic field and sense of current (i.e. vertical direction) and an additional electric field can be produced，Separating tank above-below direction is made to produce electric potential difference，So that there is downward motion in the anionic surface active substances ion in waste water，And be enriched with bottom separating tank，Gradually form sludge material，Periodically the sludge material accumulated bottom separating tank can be discharged via mud row's mouth 56，And do outward transport process；Wherein, the electrode under water 51 of anion-Hall effect separating tank 5 left and right sides, through preservative treatment, can connect the unidirectional current of 380V, produces a stabling current in separating tank；Wherein the effect of pH value regulating reservoir 4 is to regulate the pH value of waste water through primary sedimentation to 6.0 ~ 7.0, enters water pH value requirement with meet anion-Hall effect separating tank 5；Wherein, the effect of aeration nitrification tank 6 is by aerobic aeration process, makes the various nitrogen substances in waste water all be converted into nitrate nitrogen；Wherein, the effect in biological denitrificaion pond 7 is by biological activity course of reaction, by the nitrate nitrogen decomposition and inversion in waste water, thus removes nitrate nitrogen.
Sanitary wastewater after being processed by native system, its anion surfactant removal efficiency is up to 99.0%.
The dischargeable capacity of its anion-Hall effect separating tank 5 is 230m3, its under water electrode 51 connect DC source, its running voltage is 380V, service life be more than 9000h.The frame-type DC electromagnet 52 of its anion-Hall effect separating tank 5 periphery operationally accesses unidirectional current, and its running voltage is 380V, can produce the electromagnetic field that magnetic induction is 30T.

Claims (3)

  1. null1. remove the processing method of anion surfactant in sanitary wastewater for one kind，It is characterized in that，Sanitary wastewater containing anion surfactant enters sump by waste line，Centralized collection and preliminarily stabilised regulation is carried out at this，The outlet of sump 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 matter in waste water is removed further at this，The outlet of primary sedimentation basin connects pH value regulating reservoir by waste line，Waste water is neutralized process and carries out pH value regulation at this，The pH value range of water outlet is about 6.0 ~ 7.0，The outlet of pH value regulating reservoir connects anion-Hall effect separating tank by waste line，The outlet of anion-Hall effect separating tank connects aeration nitrification tank by waste line，At this by aerobic aeration process，The various nitrogen substances 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 course of reaction，By the nitrate nitrogen decomposition and inversion in waste water，Thus remove nitrate nitrogen，The outlet in biological denitrificaion pond is by waste line connecting secondary sedimentation tank，At this, residue insoluble matter in waste water is all removed，The outlet of secondary sedimentation tank connects water purifying tank by waste line，Exporting of water purifying tank is arranged outside the purification water outlet after being processed by waste line；Wherein, anion-Hall effect separating tank uses ceramic insulation material, separating tank left end and right-hand member medium position are respectively equipped with an electrode under water, separating tank periphery is horizontally disposed with a frame-type DC electromagnet and surrounds cell body three limit, enable magnetic induction line horizontal through separating tank, on the left of separating tank, lower section is provided with inlet valve, and right side is arranged over flowing water Valve, and lower right-hand side is provided with mud row's mouth；Sanitary wastewater after pH value regulation processes enters inside separating tank by the inlet valve of lower section on the left of anion-Hall effect separating tank, now frame-type DC electromagnet energising produces the magnetic field in a horizontal direction, concurrently separate two of the groove left and right sides under water electrode start electric discharge, produce an electric current being perpendicular to magnetic induction line in the horizontal direction, now it is perpendicular in magnetic field and sense of current to produce an additional electric field, separating tank above-below direction is made to produce electric potential difference, so that there is downward motion in the anionic surface active substances ion in waste water, and be enriched with bottom separating tank, gradually form sludge material, periodically the sludge material accumulated bottom separating tank can be discharged via mud row's mouth；Wherein, the electrode under water of anion-Hall effect separating tank left and right sides produces a stabling current in separating tank.
  2. Processing method the most according to claim 1, it is characterised in that the dischargeable capacity of anion-Hall effect separating tank is 230m3, its DC source of electrode connection under water, its running voltage is 380V.
  3. Processing method the most according to claim 1, it is characterised in that the frame-type DC electromagnet of anion-Hall effect separating tank periphery operationally accesses unidirectional current, and its running voltage is 380V, can produce the electromagnetic field that magnetic induction is 30T.
CN201610097971.1A 2016-02-23 2016-02-23 The processing method of anion surfactant in a kind of removal sanitary wastewater Active CN105731725B (en)

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CN201810059184.7A CN108178452A (en) 2016-02-23 2016-02-23 The processing method of anion surfactant in a kind of removal sanitary wastewater

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000051862A (en) * 1998-08-10 2000-02-22 Hisao Kobayashi Production of water with surface active function and reducing function strengthened and activated hydrogen enriched
CN105036263A (en) * 2015-07-11 2015-11-11 汪金龙 Electromagnetic centrifugal type water purifier
CN105253991A (en) * 2015-10-20 2016-01-20 浙江工商大学 Electromagnetic field coupling desalting device with pollution reduction function and method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000051862A (en) * 1998-08-10 2000-02-22 Hisao Kobayashi Production of water with surface active function and reducing function strengthened and activated hydrogen enriched
CN105036263A (en) * 2015-07-11 2015-11-11 汪金龙 Electromagnetic centrifugal type water purifier
CN105253991A (en) * 2015-10-20 2016-01-20 浙江工商大学 Electromagnetic field coupling desalting device with pollution reduction function and method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
姜春华等: "磁强化Fenton试剂降解表面活性剂污水的实验研究", 《环境科学与管理》 *

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