CN110526508A - A kind of highly difficult refractory wastewater technique - Google Patents

A kind of highly difficult refractory wastewater technique Download PDF

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Publication number
CN110526508A
CN110526508A CN201910845761.XA CN201910845761A CN110526508A CN 110526508 A CN110526508 A CN 110526508A CN 201910845761 A CN201910845761 A CN 201910845761A CN 110526508 A CN110526508 A CN 110526508A
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waste water
electrochemical
imported
highly difficult
liquid phase
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桂爱国
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Hunan Yucheng Environmental Protection Technology Co Ltd
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Hunan Yucheng Environmental Protection Technology 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
    • 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
    • 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
    • C02F1/46Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/463Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
    • 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
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • 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
    • C02F2101/105Phosphorus 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
    • C02F2101/16Nitrogen compounds, e.g. ammonia
    • 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
    • C02F3/28Anaerobic digestion processes

Abstract

The invention belongs to industrial waste water treatments, propose a kind of highly difficult refractory wastewater technique, the waste water to be processed after collecting pit is stood is imported into pre-processing device and is pre-processed;By pre-process it is up to standard after waste water imported into horizontal electrochemical apparatus and carry out first time electrochemical treatments;Waste water after first time electrochemical treatments is delivered to pulse anaerobic consersion unit and carries out biochemical treatment;Waste water after biochemical treatment is delivered to biological multiplying device and carries out biological multiplication processing;By biology multiplication, treated that waste water is delivered to that making active materials for use in secondary electrochemical equipment carries out second of electrochemical treatments;Waste water after second of electrochemical treatments is delivered to percolating machine and carries out filtration process, is discharged after the waste water after filtration process is detected;A kind of highly difficult refractory wastewater technique is directed to highly difficult used water difficult to degradate, proposes a kind of effective processing scheme, guarantees water treatment effect, preserves the ecological environment, and is advantageously implemented the Harmless discharge of waste water.

Description

A kind of highly difficult refractory wastewater technique
Technical field
The present invention relates to technical field of waste water processing more particularly to a kind of highly difficult refractory wastewater techniques.
Background technique
With the development of the industries such as petroleum, chemical industry, the industrial wastewater ingredient of generation becomes increasingly complex, the processing degradation of waste water Difficulty is also bigger, and the effect handled using existing technique waste water is undesirable, and treated, and discharge mark is not achieved in waste water Standard, needing to carry out multiple circular treatment could be up to standard, and the process cycle of waste water is too long, seriously affects production, and wastewater treatment It is ineffective, the cost of required investment is larger, this also results in many producers and is unwilling to undertake, and takes and arrange missing inspection steathily and do not conform to Rule discharge, the consequence that can not be saved is caused to subsequent environmental improvement
As domestic population constantly increases, a large amount of sanitary sewages and part industrial wastewater rich in organic matter are discharged into river, lake, Cause oxygen content of water to decline to a great extent, causes river, lake and organic seriously polluted feature is generally presented.And due to for a long time not Add improvement, a large amount of accumulation of pollutants leads to river, bottom mud in lake siltation in river, lake-bottom.Reproducibility object in bed mud Matter, which generates a large amount of biochemical oxygen demand, makes river, bottom mud in lake form anaerobic environment, gradually degenerates, becomes under anaerobe effect It is black, smelly.At present urban river, in lake regulation, focus on dredging, embankment and cuts the engineerings such as dirt at greening, and think little of bed mud and Aqueous bio in-situ immobilization more thinks little of river, lake ecological Establishing, leads to urban river in this way, side in lake regulation Zhi Bianhei, side black surround are controlled, and cannot fundamentally be improved river, lake water quality and be improved water body self-purification ability.
Summary of the invention
The undesirable defect of effect waste water handled the purpose of the present invention is to solve the prior art, and propose A kind of highly difficult refractory wastewater technique.
To achieve the goals above, present invention employs following technical solutions:
A kind of highly difficult refractory wastewater technique, comprising the following steps:
Waste water to be processed after collecting pit is stood is imported into pre-processing device and pre-processed by S1;
S2, by S1 pre-process it is up to standard after waste water imported into horizontal electrochemical apparatus and carry out first time electrochemical treatments;
Waste water after S2 first time electrochemical treatments is delivered to pulse anaerobic consersion unit and carries out biochemical treatment by S3;
Waste water after S3 biochemical treatment is delivered to biological multiplying device and carries out biological multiplication processing by S4;
S5, by the multiplication of S4 biology, treated that waste water is delivered to that making active materials for use in secondary electrochemical equipment carries out second of electrochemical treatments;
Waste water after second of electrochemical treatments of S5 is delivered to percolating machine and carries out filtration process, after filtration process by S6 Waste water discharges after being detected.
Preferably, in S1, waste water to be processed is collected into collecting pit, and it is small that 12-36 is stood in collecting pit When, added with the lime for sterilizing in collecting pit, by the waste water to be processed after standing after top overflow port spilling It imported into pretreatment pool.
Preferably, in S1, waste water to be processed first passes through grid in pretreatment pool and carries out primary filtration processing, so Adjusting filtered waste water pH value to be processed again afterwards will be to be processed after the pH value for the treatment of sewage is in 4.5-6.5 range Sewage imported into horizontal electrochemical cell from pretreatment pool.
Preferably, in S2, the waste water overflowed from pretreatment pool top is imported into closed horizontal electrochemical cell It is interior, chemical agent is added into horizontal electrochemical apparatus at regular time and quantity by PAC chemicals dosing plant, is connected in horizontal electrochemical apparatus The low voltage and high current of pole plate, generates electric field between pole plate, and electric flocculation reaction occurs between pole plate for waste water to be processed.
Preferably, in S2, following electric flocculation reaction occurs in electrochemical apparatus: anode plate is sent out after losing electronics Raw oxidation reaction is generated compared with strong oxidizer and metal cation, and the strong oxidizer of generation is used to inorganic matter in Decomposition Wastewater, and produces Hydroxide ion in raw metal cation and solution generates colloid flocculate, and reduction occurs for cathode plate instead after obtaining electronics It answers, indirect reduction obtains the high price or low-valent metal cation of electronics in cathode, it is made directly to be reduced to heavy metal or low price Heavy metallic salt sediment, while hydrogen and oxygen can be precipitated respectively on cathode plate and anode plate generates high micro- of dispersion degree Minute bubbles combine generation larger cotton-shaped with colloid, suspended matter, soluble pollutants, bacterium, virus, the heavy metal etc. in waste water Body is removed through precipitating, air bearing.
Preferably, in S3, by electrochemical apparatus treated waste water from the water inlet pipe of pulse anaerobic consersion unit It is imported into reaction chamber bottom, waste water flows up into fluidized reaction zone by bottom and mixes with granule sludge, so that most of have The reaction degradation of machine object, and a large amount of biogas are generated, liquid phase upflow velocity is very fast, and biogas rises at separator with liquid phase to be collected, by Pressure in gas flow tube is less than the pressure of fluidized reaction zone, and biogas is separated from liquid phase by separator and from gas flow tube It imported into Marsh gas collector, and is encapsulated by water receiving, and the biggish granule sludge of density in fluid-mixing, then in gravity Under flow back into the bottom of fluidized reaction zone, mixed with the high-concentration waste water of the importing of bottom, so that it is anti-in fluidisation to realize fluid The circulation inside area is answered, and the gap that the lesser liquid phase of density then passes through between separator and reaction chamber in fluid-mixing enters Deep purifying area, liquid phase further occurrence biological respinse in deep purifying area form liquid phase upper up-flow while generating biogas Speed, biogas rise to top with liquid phase, are imported in Marsh gas collector after separator collection by airflow line, and at deep purifying Sewage after reason is then discharged by discharge outlet, and the liquid phase upflow velocity in deep purifying area is than the liquid phase upper up-flow in fluidized reaction zone Speed plays good buffer function from fluidized reaction zone to deep purifying area to liquid phase.
Preferably, in S4, pulse anaerobic consersion unit treated waste water is imported into biology times from outlet pipe Add it is standby, in biological multiplying device by control dissolved oxygen and sludge settling ratio synchronous denitrification drop phosphorus denitrogenation so that biological The micro organism quantity maximization, flora particularization, degradation that culture is tamed in processing carrier are efficient, thus effective degrading waste water In organic pollutant reach biobalance.
Preferably, after S5, by biological multiplying device, treated that waste water is imported into making active materials for use in secondary electrochemical equipment, Chemical agent is added into making active materials for use in secondary electrochemical equipment at regular time and quantity by PAC chemicals dosing plant, connects pole in making active materials for use in secondary electrochemical equipment The low voltage and high current of plate, generates electric field between pole plate, and electric flocculation reaction occurs between pole plate for waste water to be processed.
Preferably, in S6, by making active materials for use in secondary electrochemical equipment, treated that waste water is imported into percolating machine, first from upper Pass through the filtration treatment of refined filtration grid down, then is carried out the stuffing box for being filled with active carbon and porous aggregate is imported by bottom Infiltration will be exported after waste water osmotic pressure from the top of stuffing box by controlling the hydraulic pressure of stuffing box influent side.
Preferably, each equipment treated situation in S1-S6 is analyzed by detecting instrument, determines each equipment processing Whether waste water is up to standard, and waste water not up to standard is returned to previous step, until waste water all reaches phase after each step process The standard answered, the waste water for then obtaining final process carry out discharge or secondary use.
The beneficial effects of the present invention are as follows:
A kind of highly difficult refractory wastewater technique, using reasonable sewage treatment technology process, by collecting pit to waste water Purification filter residue processing is carried out, the pretreatment such as pH adjusting is carried out to waste water by pre-processing device, reduces the difficulty of subsequent wastewater treatment Degree carries out electric flocculation reaction treatment to waste water by horizontal electrochemical apparatus, reacts the metal salt in degrading waste water, pass through pulse Anaerobic reaction equipment carries out the degradation of organic matter to waste water, and it is synchronous with sludge settling ratio to control dissolved oxygen by biological multiplying device Phosphorus denitrogenation drops in denitrification, realizes the degradation of organic pollutant, to reach biobalance, is handled by making active materials for use in secondary electrochemical and is settled again Intractable metal salt impurity in waste water carries out refined filtration and filtration process to waste water by percolating machine, and filtering and absorption are fallen useless Impurity in water realizes the nuisanceless discharge of waste water finally by detection;The wastewater processing technology that the present invention uses can be fine The harmful substance by highly difficult used water difficult to degradate be removed, guarantee water treatment effect while, ecology is effectively protected Environment provides a practicable technical solution to complicated industrial wastewater and sanitary wastewater discharge, improves existing useless The technique of water process is advantageously implemented the Harmless discharge of waste water.
Specific embodiment
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment Only a part of the embodiment of the present invention, instead of all the embodiments.
A kind of highly difficult refractory wastewater technique, comprising the following steps:
Waste water to be processed after collecting pit is stood is imported into pre-processing device and pre-processed by S1;
In S1, waste water to be processed is collected into collecting pit, is stood 12-36 hours in collecting pit, is added in collecting pit Added with the lime for sterilizing, the waste water to be processed after standing is imported into pretreatment pool after top overflow port spilling It is interior;The biggish impurity of quality in waste water is precipitated by stewing process, carries out preliminary disinfection degerming to waste water by adding lime Processing, waste water is overflowed from top guarantees collecting pit to the sedimentation effect of waste water, and the amount of the water impurities of spilling is less, is conducive to Subsequent waste water is further processed.
In S1, waste water to be processed first passes through grid in pretreatment pool and carries out primary filtration processing, then adjusts again Waste water pH value to be processed after filter, after the pH value for the treatment of sewage is in 4.5-6.5 range, by treatment sewage from advance Reason pond imported into horizontal electrochemical cell;Preliminary filtration treatment is carried out to waste water by coarse net grid, screen out in waste water quality compared with Light floating impurity provides good environment to the processing of subsequent waste water, and the reasonable pH value for adjusting waste water is that waste water is subsequent Electrochemical treatments are ready.
S2, by S1 pre-process it is up to standard after waste water imported into horizontal electrochemical apparatus and carry out first time electrochemical treatments;
In S2, it will imported into closed horizontal electrochemical cell from the waste water that pretreatment pool top is overflowed, filled by PAC dosing It sets and adds chemical agent into horizontal electrochemical apparatus at regular time and quantity, connect the high electricity of low-voltage of horizontal electrochemical apparatus internal polar plate Stream, generates electric field between pole plate, and electric flocculation reaction occurs between pole plate for waste water to be processed;The counterweight in horizontal electrochemical apparatus Metallic wastewater contact break processing, decolorizing printing and dyeing waste water drop COD, improves giving birth to for organic wastewater with difficult degradation thereby at oily waste water breaking milk and removing oil The property changed, de- steady sedimentation of tiny suspended particulate etc. are handled, and not manually dosing, the sludge quantity of generation is usually than other treatment process Few, sludge compactness is high, thus greatly reduces the cost of disposal of sludge.
In S2, following electric flocculation reaction occurs in electrochemical apparatus: after losing electronics oxidation reaction occurs for anode plate, It generates compared with strong oxidizer and metal cation, the strong oxidizer of generation is used to inorganic matter in Decomposition Wastewater, and the metal generated is positive Hydroxide ion in ion and solution generates colloid flocculate, and after obtaining electronics reduction reaction, indirect reduction occur for cathode plate The high price or low-valent metal cation of electronics are obtained in cathode, it is made directly to be reduced to heavy metal or low price heavy metallic salt precipitating Object, while hydrogen and oxygen can be precipitated respectively on cathode plate and anode plate, generate dispersion degree high micro-bubble and waste water In colloid, suspended matter, soluble pollutants, bacterium, virus, heavy metal etc. combine and generate larger flock, through precipitating, air bearing It is removed.
Waste water after S2 first time electrochemical treatments is delivered to pulse anaerobic consersion unit and carries out biochemical treatment by S3;
In S3, electrochemical apparatus treated waste water is imported into reaction chamber bottom from the water inlet pipe of pulse anaerobic consersion unit Portion, waste water flow up into fluidized reaction zone by bottom and mix with granule sludge, so that most of organic matter reaction degradation, and A large amount of biogas are generated, liquid phase upflow velocity is very fast, and biogas rises at separator with liquid phase to be collected, due to the pressure in gas flow tube Less than the pressure of fluidized reaction zone, biogas is separated from liquid phase by separator and imported into Marsh gas collector from gas flow tube In, and encapsulated by water receiving, and the biggish granule sludge of density in fluid-mixing, then fluidized reaction is flowed back under the effect of gravity The bottom in area is mixed with the high-concentration waste water of the importing of bottom, so that circulation of the fluid inside fluidized reaction zone is realized, and The lesser liquid phase of density then passes through the gap between separator and reaction chamber and enters deep purifying area in fluid-mixing, and liquid phase exists Further occurrence biological respinse in deep purifying area forms liquid phase upflow velocity while generating biogas, and biogas rises with liquid phase To top, imported in Marsh gas collector after separator collection by airflow line, and deep purifying treated sewage is then by arranging Mouth of a river discharge, liquid phase upflow velocity in deep purifying area is than the liquid phase upflow velocity in fluidized reaction zone, to liquid phase from fluidisation Reaction zone plays good buffer function to deep purifying area.
Cooperated by pulse water distribution and separator, so that sewage is formed in effective in fluidized reaction zone and deep purifying area Portion's circulation, liquid phase circulation flow are much larger than flow of inlet water, are diluted and are intake by recirculated water, improve the anti-shock loading energy of reaction chamber Power and acid-base accommodation ability, and by the way that multiple separators are arranged, subregion carries out circular treatment, lifting sewage purification effect to sewage While fruit, guarantee reaction chamber inside stability, and efficiently use liquid phase upflow velocity, enhance dirty Organic substance in water and Mass transfer between granule sludge improves the organic loading of reaction chamber, thus while guaranteeing water treatment effect, lifting sewage The efficiency of processing.
Waste water after S3 biochemical treatment is delivered to biological multiplying device and carries out biological multiplication processing by S4;
In S4, pulse anaerobic consersion unit treated waste water is imported into biological multiplying device from outlet pipe, in biology times It adds in standby and phosphorus denitrogenation is dropped by control dissolved oxygen and sludge settling ratio synchronous denitrification, so that being tamed in biological treatment carrier The micro organism quantity maximization of culture, flora are becomed privileged, degradation is efficient, so that the organic pollutant effectively in degrading waste water reaches To biobalance;Under the premise of guaranteeing to sanitary sewage disposal effect, treatment effeciency is also effectively improved, sewage water outlet reaches Primary standard or surface water IV class discharge standard, and operation steady in a long-term, occupied area is few, while save the cost, moreover it is possible to Reduce secondary pollution.
S5, by the multiplication of S4 biology, treated that waste water is delivered to that making active materials for use in secondary electrochemical equipment carries out second of electrochemical treatments;
After S5, by biological multiplying device, treated that waste water is imported into making active materials for use in secondary electrochemical equipment, passes through PAC chemicals dosing plant Chemical agent is added into making active materials for use in secondary electrochemical equipment at regular time and quantity, connects the high electricity of low-voltage of making active materials for use in secondary electrochemical equipment internal polar plate Stream, generates electric field between pole plate, and electric flocculation reaction occurs between pole plate for waste water to be processed;To useless in making active materials for use in secondary electrochemical equipment Water carry out again contact break processing, oily waste water breaking milk and removing oil, decolorizing printing and dyeing waste water drop COD, improve organic wastewater with difficult degradation thereby can Biochemical, de- steady sedimentation of tiny suspended particulate etc. are handled, and not manually dosing, the sludge quantity of generation is usually than other processing works Skill is few, and sludge compactness is high, thus greatly reduces the cost of disposal of sludge, and it is miscellaneous to settle intractable metal salt in waste water again Matter.
Waste water after second of electrochemical treatments of S5 is delivered to percolating machine and carries out filtration process, by filtration process by S6 Waste water afterwards discharges after being detected.
In S6, by making active materials for use in secondary electrochemical equipment, treated that waste water is imported into percolating machine, first passes through essence from top to bottom Fine particle impurity after settling in waste water is purged, then will be imported into and be filled with by bottom by the filtration treatment of filter grid grid The stuffing box of active carbon and porous aggregate is permeated, and sterilization and adsorption treatment again is carried out to waste water, by controlling filler The hydraulic pressure of case influent side will export from the top of stuffing box after waste water osmotic pressure, be adjusted by pressure and be percolated out by waste water.
Each equipment treated situation in S1-S6 is analyzed by detecting instrument, determines whether the waste water of each equipment processing reaches Waste water not up to standard is returned to previous step by mark, until waste water all reaches corresponding standard after each step process, so The waste water that final process is obtained afterwards carries out discharge or secondary use.
The present invention uses reasonable sewage treatment technology process, carries out purification filter residue processing to waste water by collecting pit, leads to It crosses pre-processing device and the pretreatment such as pH adjusting is carried out to waste water, reduce the difficulty of subsequent wastewater treatment, set by horizontal electrochemistry It is standby that electric flocculation reaction treatment is carried out to waste water, the metal salt in degrading waste water is reacted, by pulse anaerobic consersion unit to waste water The degradation for carrying out organic matter controls dissolved oxygen by biological multiplying device and phosphorus denitrogenation drops in sludge settling ratio synchronous denitrification, real The degradation of existing organic pollutant is handled by making active materials for use in secondary electrochemical to reach biobalance and settles intractable gold in waste water again Belong to salt impurity, refined filtration and filtration process is carried out to waste water by percolating machine, filtering and absorption are fallen the impurity in waste water, finally led to Cross the nuisanceless discharge that waste water is realized in detection;The wastewater processing technology that the present invention uses can be good at will be highly difficult difficult to degrade useless The harmful substance of water is removed, and while guaranteeing water treatment effect, ecological environment is effectively protected, to complicated Industry Waste Water and sanitary wastewater discharge provide a practicable technical solution, and the technique for improving existing wastewater treatment is conducive to Realize the Harmless discharge of waste water.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims (10)

1. a kind of highly difficult refractory wastewater technique, which comprises the following steps:
Waste water to be processed after collecting pit is stood is imported into pre-processing device and pre-processed by S1;
S2, by S1 pre-process it is up to standard after waste water imported into horizontal electrochemical apparatus and carry out first time electrochemical treatments;
Waste water after S2 first time electrochemical treatments is delivered to pulse anaerobic consersion unit and carries out biochemical treatment by S3;
Waste water after S3 biochemical treatment is delivered to biological multiplying device and carries out biological multiplication processing by S4;
S5, by the multiplication of S4 biology, treated that waste water is delivered to that making active materials for use in secondary electrochemical equipment carries out second of electrochemical treatments;
Waste water after second of electrochemical treatments of S5 is delivered to percolating machine and carries out filtration process, after filtration process by S6 Waste water discharges after being detected.
2. a kind of highly difficult refractory wastewater technique according to claim 1, which is characterized in that in S1, wait locate The waste water of reason is collected into collecting pit, stands 12-36 hours in collecting pit, added with for sterilizing in collecting pit Lime, by the waste water to be processed after standing from top overflow port spilling after imported into pretreatment pool.
3. a kind of highly difficult refractory wastewater technique according to claim 1, which is characterized in that in S1, wait locate Reason waste water first passes through grid in pretreatment pool and carries out primary filtration processing, then adjusts filtered waste water soda acid to be processed again Degree, after the pH value for the treatment of sewage is in 4.5-6.5 range, imported into horizontal electrochemistry from pretreatment pool for treatment sewage Pond.
4. a kind of highly difficult refractory wastewater technique according to claim 1, which is characterized in that, will be from S2 The waste water that pretreatment pool top is overflowed is imported into closed horizontal electrochemical cell, by PAC chemicals dosing plant at regular time and quantity to sleeping Chemical agent is added in formula electrochemical apparatus, the low voltage and high current of horizontal electrochemical apparatus internal polar plate is connected, between pole plate Electric field is generated, electric flocculation reaction occurs between pole plate for waste water to be processed.
5. a kind of highly difficult refractory wastewater technique according to claim 1, which is characterized in that in S2, in electricity Following electric flocculation reaction occurs in chemical device: after losing electronics oxidation reaction occurs for anode plate, generates compared with strong oxidizer and gold Belong to cation, the strong oxidizer of generation is for inorganic matter in Decomposition Wastewater, and the hydrogen-oxygen in the metal cation and solution generated Radical ion generates colloid flocculate, and after obtaining electronics reduction reaction occurs for cathode plate, and indirect reduction obtains the height of electronics in cathode Valence or low-valent metal cation, make it directly be reduced to heavy metal or low price heavy metallic salt sediment, at the same in cathode plate and Can be precipitated hydrogen and oxygen on anode plate respectively, generate colloid in dispersion degree high micro-bubble and waste water, suspended matter, can Soluble pollutants, bacterium, virus, heavy metal etc., which combine, generates larger flock, is removed through precipitating, air bearing.
6. a kind of highly difficult refractory wastewater technique according to claim 1, which is characterized in that, will be electric in S3 Chemical device treated waste water imported into reaction chamber bottom from the water inlet pipe of pulse anaerobic consersion unit, and waste water is upward by bottom Fluidized reaction zone is flowed into mix with granule sludge, so that most of organic matter reaction degradation, and generate a large amount of biogas, liquid phase Upflow velocity is very fast, and biogas rises at separator with liquid phase to be collected, since the pressure in gas flow tube is less than fluidized reaction zone Pressure, biogas from separating in liquid phase and imported into Marsh gas collector from gas flow tube, and pass through water receiving envelope by separator Dress, and the biggish granule sludge of density in fluid-mixing, then flow back into the bottom of fluidized reaction zone, with bottom under the effect of gravity Importing high-concentration waste water mixing, to realize circulation of the fluid inside fluidized reaction zone, and density in fluid-mixing The gap that lesser liquid phase then passes through between separator and reaction chamber enters deep purifying area, liquid phase in deep purifying area into Biological respinse occurs for one step, forms liquid phase upflow velocity while generating biogas, biogas rises to top with liquid phase, by separator It is imported in Marsh gas collector after collection by airflow line, and treated that sewage is then discharged by discharge outlet for deep purifying, depth is net Change the liquid phase upflow velocity in area than the liquid phase upflow velocity in fluidized reaction zone, to liquid phase from fluidized reaction zone to deep purifying Play good buffer function in area.
7. a kind of highly difficult refractory wastewater technique according to claim 1, which is characterized in that in S4, by arteries and veins It rushes anaerobic reaction equipment treated waste water and imported into biological multiplying device from outlet pipe, pass through control in biological multiplying device Phosphorus denitrogenation drops in dissolved oxygen and sludge settling ratio synchronous denitrification, so that taming the micro organism quantity of culture in biological treatment carrier Maximization, flora are becomed privileged, degradation is efficient, so that the organic pollutant effectively in degrading waste water reaches biobalance.
8. a kind of highly difficult refractory wastewater technique according to claim 1, which is characterized in that, will after S5 Treated that waste water is imported into making active materials for use in secondary electrochemical equipment for biological multiplying device, by PAC chemicals dosing plant at regular time and quantity to secondary Chemical agent is added in electrochemical apparatus, is connected the low voltage and high current of making active materials for use in secondary electrochemical equipment internal polar plate, is produced between pole plate Electric flocculation reaction occurs between pole plate for raw electric field, waste water to be processed.
9. a kind of highly difficult refractory wastewater technique according to claim 1, which is characterized in that in S6, by two Treated that waste water is imported into percolating machine for secondary electrochemical apparatus, first passes through the filtration treatment of refined filtration grid from top to bottom, then The stuffing box for being filled with active carbon and porous aggregate will be imported by bottom to permeate, by the water for controlling stuffing box influent side Pressure will export after waste water osmotic pressure from the top of stuffing box.
10. -9 described in any item a kind of highly difficult refractory wastewater techniques according to claim 1, which is characterized in that logical Each equipment treated situation in detecting instrument analysis S1-S6 is crossed, determines whether the waste water of each equipment processing is up to standard, it will not be up to standard Waste water return to previous step, until waste water all reaches corresponding standard after each step process, then will finally locate It manages obtained waste water and carries out discharge or secondary use.
CN201910845761.XA 2019-09-09 2019-09-09 A kind of highly difficult refractory wastewater technique Withdrawn CN110526508A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112266129A (en) * 2020-09-29 2021-01-26 武汉大学 Wastewater treatment apparatus and wastewater treatment method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112266129A (en) * 2020-09-29 2021-01-26 武汉大学 Wastewater treatment apparatus and wastewater treatment method

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