CN107043195A - A kind of processing method of betel nut waste water - Google Patents
A kind of processing method of betel nut waste water Download PDFInfo
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- CN107043195A CN107043195A CN201710097373.9A CN201710097373A CN107043195A CN 107043195 A CN107043195 A CN 107043195A CN 201710097373 A CN201710097373 A CN 201710097373A CN 107043195 A CN107043195 A CN 107043195A
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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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
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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
- 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
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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
- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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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
- 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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- 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
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
Abstract
The present invention provides a kind of processing method of betel nut waste water, comprises the following steps：The first step：Except Slag treatment；Second step：First time biochemical treatment, obtains the first mixed liquor；3rd step：First mixed liquor is subjected to first time precipitation process, the first sludge and the first precipitated liquid is obtained；4th step：First precipitated liquid is subjected to second of biochemical treatment, the second mixed liquor is obtained；5th step：Second mixed liquor is subjected to second of precipitation process, the second sludge and the second precipitated liquid is obtained；6th step：Second precipitated liquid is subjected to subsequent treatment.The present invention is used except Slag treatment and Two-Stage Biochemical processing are implemented in combination with the processing of betel nut waste water, change the thinking of prior art, eliminate pre-treatment step, treatment effect is not less than the processing mode of prior art, it enormously simplify processing step, it is to avoid the additions of a large amount of reagent treatments, improve the stability of system, the sludge yield in sewage disposal process is reduced, processing cost is saved.
Description
Technical field
The present invention relates to technical field of waste water processing, and in particular to a kind of processing method of betel nut waste water.
Background technology
Betel nut is a kind of chewing food of southern area, and Hainan is produced per year in nearly million tons of betel nut, these betel nut process,
One ton of betel nut about produces 5-15 tons of waste water.Organic concentration is high in betel nut waste water and contains the noxious materials such as phenol, if directly
Environment water is discharged into, huge environmental nuisance will be caused.
Betel nut wastewater biodegradability is very poor, is a kind of higher waste water of intractability.Current technique is typically all using pre-
The process route of processing+biochemistry+advanced treating, can substantially realize qualified discharge, but there is operating cost height, dosing
Greatly, sludge yield is high, the problems such as operation stability is poor, and Details as Follows：
The patent of invention of Application No. 201110458167.9 discloses a kind of processing method of betel nut processing waste water, this method
Comprise the steps：1) betel nut processing waste water is emitted into regulating reservoir after artificial screen filtration；2) by regulating reservoir waste water lifting
Into UASB anaerobic reactors, most of organic matter in waste water is removed；3) UASB anaerobic reactors supernatant flows into one-level biology
Contact-oxidation pool, removes the partial organic substances in waste water；4) by step 3) processing after waste water from flow in the first sedimentation basin sink
Form sediment；5) supernatant after precipitating is flowed automatically in advanced oxidation retort, and the organic matter of difficult for biological degradation is pre-oxidized；6) will be senior
Waste water after oxidation is flow in coagulative precipitation tank certainly carries out coagulating and separation of solid and liquid；7) the supernatant gravity flow after separation of solid and liquid
Enter two stage biological contact-oxidation pool；8) step 7) processing after waste water from flow in the second sedimentation basin precipitate, supernatant row up to standard
Put.This processing mode has Railway Project：(1) residence time is oversize, it is necessary to very big anaerobic tower, and system insulation construction cost
Very high, anaerobic tower entirety cost of investment is very high；(2) inflow temperature of winter betel nut waste water is not higher than 20 DEG C, the work of the UASB
Temperature is 30-45 DEG C, and heating needs to consume substantial amounts of energy consumption, but if using normal temperature, system for anaerobic treatment easily fails
Or collapse phenomenon；(3) anaerobic sludge growth cycle is slow, and debug time is up to more than three months, and operational control is extremely complex, at present
The anaerobic treatment tower construction of You Duojia betel nuts factory was completed after several years, failed to realize normal operation；(4) at present anaerobic tower heating frequently with
The mode of indirect heat transfer carries out the corrosive substance such as oil-containing H2S in heat exchange heating, anaerobic tower, heat exchanger corrosion rate quickly, and
Because temperature is higher near heat exchanger, heat exchanger surface often assembles a large amount of biological sludges, and heat transmission resistance is very big, and heat-transfer effect is difficult
To ensure.Therefore, in betel nut waste water industry, USAB is used seldom, and is not up to ideal effect.
The patent of invention of Application No. 201410141543.5 discloses a kind of raising Areca-nut seed cooking wastewater biodegradability
Preprocess method, this method comprises the steps：(1) Areca-nut seed cooking waste water raw water is filtered first, it is thick in waste water to remove
Big material；(2) waste water is from regulating reservoir is flowed into, with regulating water quality water；(3) waste water is opened from aluminium charcoal micro-electrolysis reactor is flowed into
Blast aerator is fully reacted；(4) step (3) reacted water outlet is stirred from coagulating basin is flowed into；(5) by step
(4) reacted mixed liquor carries out separation of solid and liquid from sedimentation basin is flowed into, and supernatant is discharged into follow-up biochemical treatment system；(6) aluminium
Sludge in charcoal micro-electrolysis reactor and sedimentation basin is emitted into sludge concentration tank by static pressure mode, is transported outward after sludge dewatering concentration
Filtrate after processing, sludge press filtration flows into regulating reservoir.This method can effectively improve the biodegradability of waste water, but betel nut waste water
Middle organic concentration is high, and the light electrolysis effect of aluminium powder is without selectivity, and either easily biodegradable organicses or difficult degradation are organic
Thing, can produce reaction with aluminium powder, cause the waste of aluminium powder.
Application No. 201610174817.X patent application discloses a kind of brewed and boiling production waste water the place of betel nut
Reason method, is carried out removal of impurities to waste water first, is then pre-processed with FCM-III iron-carbon micro-electrolysis technologies；After light electrolysis
Aerating oxidation, flocculation, air flotation technology is recycled to carry out slag-liquid separation；Then the technique for using " UASB+MBBR+ anoxics+aerobic "
Subsequent treatment is carried out to waste water.There is problems with the technique：(1) technique is floating in the laggard promoting the circulation of qi of Fe-C micro electrolysis, and iron charcoal is micro-
Electrolysis is to suspension almost without removal effect, and air supporting is responsible for removing main suspended organic matter, due to being suspended in betel nut waste water
Thing is dense, and air supporting needs to add substantial amounts of medicament；(2) substantial amounts of scum silica frost is produced, scum silica frost belongs to industrial waste, both not environmentally
Also it is uneconomical；(3) recipe step is excessive, and operation operation is excessively complicated, and betel nut factory wastewater discharge is not often high, therefore
It is very uneconomical.
In summary, a kind of technique of urgent need is simplified, technological parameter is easily controlled, processing cost is low and is easy to the waste water of operation
Processing method is to solve problems of the prior art.
The content of the invention
Present invention aims at providing, a kind of technique is simplified, technological parameter is easily controlled, processing cost is low and is easy to operate
Betel nut waste water processing method, concrete technical scheme is as follows：
A kind of processing method of betel nut waste water, comprises the following steps：
The first step：Betel nut waste water through and removing Slag treatment；
Second step：Betel nut waste water after slagging-off is inserted in one-level biochemistry pool and carries out biochemistry for the first time, the first mixing is obtained
Liquid；
3rd step：First mixed liquor is inserted in first stage precipitation tank and carries out precipitation for the first time and obtains the first sludge and first and sink
Shallow lake liquid, the first sludge is divided into two large divisions, and Part I is back in one-level biochemistry pool, and Part II enters into sludge concentration tank
Row concentration；
4th step：First precipitated liquid is inserted in secondary biochemical pond and carries out second of biochemistry, the second mixed liquor is obtained；
5th step：Second mixed liquor is inserted in second-level settling pond and carries out second precipitation and obtain the second sludge and second sinking
Shallow lake liquid, the second sludge is divided into two large divisions, and Part I is back in secondary biochemical pond, and Part II is back to one-level biochemistry pool
In；
6th step：Second precipitated liquid is subjected to subsequent treatment, the water for meeting discharge standard is produced.
Preferred in above technical scheme, the first time biochemistry is carried out under normal temperature and pressure conditionses, and the biochemical time is 2-7
Hour, the amount of dissolved oxygen is 1-2mg/L；The first time is deposited under normal temperature and pressure conditionses and carried out, and the sedimentation basin residence time is
4-5h；At least there is clear water layer of the height for 1m in the first stage precipitation tank.
Preferred in above technical scheme, second of the biochemistry is carried out under normal temperature and pressure conditionses, and the biochemical time is 5-
12 hours, the amount of dissolved oxygen was 2-4mg/L；The first time is deposited under normal temperature and pressure conditionses and carried out, the sedimentation basin residence time
For 4-5h；At least there is clear water layer of the height for 1m in the second-level settling pond.
Preferred, group of the subsequent treatment comprising coagulation-flocculation or Fe-C micro electrolysis and chemical oxidation in above technical scheme
Close.
Preferred in above technical scheme, the medicament in the coagulation-flocculation is combined by coagulant and activated carbon, institute
The quality proportioning for stating coagulant and the activated carbon is 2：1, wherein the addition 100-500mg/L of coagulant；
Either, the medicament in the coagulation-flocculation is combined by coagulant, activated carbon and flocculant, the coagulation
The quality proportioning of agent, activated carbon and flocculant is 1：1-5：1；Add flocculant after coagulant is added, flocculant plus
It is 10-100mg/L to enter amount.
Preferred in above technical scheme, the coagulant is poly-ferric chloride, aluminium polychloride, bodied ferric sulfate, chlorine
Change at least one of iron, aluminium chloride and ferric sulfate；The activated carbon is 200-1000 mesh powder activated carbons；The flocculation
Agent is at least one of polyacrylamide, gelatine and chitosan.
Preferred in above technical scheme, the oxidizing substance used in the chemical oxidation is hydrogen peroxide or ozone.
It is preferred in above technical scheme, the first time it is biochemical and second it is biochemical in dissolved oxygen amount by molten
Solution oxygen analyzer is measured；The one-level biochemistry pool and the secondary biochemical pond are connected with blower fan.
Preferred in above technical scheme, in the first step is specifically except Slag treatment：Screen pack using 100 mesh enters
Row slagging-off.
Apply the technical scheme of the present invention, have the advantages that：
(1) in the prior art to the processing of betel nut waste water by the process route of " pretreatment+biochemistry+advanced treating ",
Substantial amounts of chemical reagent is first added in pre-treatment step to anticipate waste water, there is problems with：First, betel nut waste water
In contain substantial amounts of organic matter and suspension, need to add substantial amounts ofization using pretreatment modes such as Fe-C micro electrolysis or coagulations
Learn reagent；Second, the chemical agent of addition necessarily generates substantial amounts of sludge；3rd, process route step is various, easily produces event
Barrier.These three problems can all cause the sharp increase of cost for wastewater treatment above, increase the burden of manufacturing enterprise.The present invention passes through slagging-off
Processing, Two-Stage Biochemical processing can complete the processing of betel nut waste water with reference to subsequent processing steps, change the thinking of prior art,
Biochemical treatment twice is directly being carried out after simple slagging-off, pre-treatment step is being eliminated, treatment effect is not less than prior art
Processing mode, enormously simplify processing step, it is to avoid the addition of a large amount of reagent treatments, improve the stability of system, drop
Sludge yield in low sewage disposal process, saves processing cost.
(2) equipment used in the inventive method is simplified, low manufacture cost.
(3) state modulator of Two-Stage Biochemical of the present invention is reasonable, it is ensured that the degradation rate of the COD after one-level biochemical treatment is up to
80%-90%, the degradation rate of the COD after secondary biochemical treatment is up to more than 98%, by whole PROCESS FOR TREATMENT of the invention
COD afterwards is stable to be less than 20 in 100mg/L, effluent color dilution, complies fully with the discharge standard of industrial wastewater.
(4) subsequent processing steps are using ripe in the prior art coagulation-flocculation or Fe-C micro electrolysis and chemical oxidation
Combination, processing step is simplified, and reagent is readily available and cost is low, further reduces processing cost.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.
Below with reference to figure, the present invention is further detailed explanation.
Brief description of the drawings
The accompanying drawing for constituting the part of the application is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the structural representation of processing betel nut waste water in the preferred embodiment of the present invention 1；
Wherein, 1, one-level biochemistry pool, 2, first stage precipitation tank, 3, secondary biochemical pond, 4, second-level settling pond, 5, sludge condensation
Pond, 6, blower fan, 7, aftertreatment device, 8, filter.
Embodiment
Embodiments of the invention are described in detail below in conjunction with accompanying drawing, but the present invention can be limited according to claim
Fixed and covering multitude of different ways is implemented.
Embodiment 1：
Referring to Fig. 1, a kind of processing method of betel nut waste water, the device specifically used includes：One-level biochemistry pool 1, one-level are sunk
Shallow lake pond 2, secondary biochemical pond 3, second-level settling pond 4, sludge concentration tank 5, blower fan 6, aftertreatment device 7 and filter 8, blower fan
6 are connected with one-level biochemistry pool 1 and secondary biochemical pond 3, and oxygen is provided for it.
The processing of betel nut waste water specifically includes following steps：
The first step：Betel nut waste water through and removing Slag treatment, herein be specifically except Slag treatment：It is (specific using deslagging device 8
With the screen pack of 100 mesh) removed the gred；
Second step：Betel nut waste water after slagging-off is inserted in one-level biochemistry pool and carries out biochemistry for the first time, the first mixing is obtained
Liquid, biochemistry progress under normal temperature and pressure conditionses for the first time, the biochemical time is 5 hours, and dissolved oxygen is controlled in 1-2mg/L；
3rd step：First mixed liquor is inserted in first stage precipitation tank and carries out precipitation for the first time and obtains the first sludge and first and sink
Shallow lake liquid, the first sludge is divided into two large divisions, and Part I is back in one-level biochemistry pool, and Part II enters into sludge concentration tank
Row concentration, is deposited under normal temperature and pressure conditionses and carries out for the first time, and sedimentation basin hydraulic detention time is 5h；In order to prevent first
The sludge of sedimentation basin enters the second biochemistry pool, when water sludge interface is risen to from a distance from overflow crest of weir 1m, the control of water sludge interface
It is to be realized by the ratio of Part I and Part II in the first sludge；
4th step：First precipitated liquid is inserted in secondary biochemical pond and carries out second of biochemistry, the second mixed liquor, second is obtained
Secondary biochemistry is carried out under normal temperature and pressure conditionses, and the biochemical time is 12 hours, and the amount of dissolved oxygen is 2-4mg/L；
5th step：Second mixed liquor is inserted in second-level settling pond and carries out second precipitation and obtain the second sludge and second sinking
Shallow lake liquid, the second sludge is divided into two large divisions, and Part I is back in secondary biochemical pond, and Part II is back to first stage precipitation tank
In, it is deposited under normal temperature and pressure conditionses and carries out for the first time, sedimentation basin hydraulic detention time is 5h；In order to prevent the first sedimentation basin
Sludge enters the second biochemistry pool, when water sludge interface is risen to from a distance from overflow crest of weir 1m, and the control of water sludge interface is by the
The ratio of Part I and Part II is realized in two sludge；
6th step：Second precipitated liquid is subjected to subsequent treatment, the water for meeting discharge standard is produced, subsequent treatment bag herein
Coagulation-flocculation is included, is specifically：Medicament employed in the coagulation-flocculation is combined by coagulant, activated carbon and flocculant,
Detailed process is：Coagulant (aluminium polychloride, PAC) and activated carbon are added into waste water, is stirred, then is added into waste water
Flocculant (polyacrylamide, PAM) 10-50ppm, the quality proportioning of the coagulant, activated carbon and flocculant is 1：5：1；It
Backward waste water, which enters, carries out air supporting among air floatation machine, air supporting effluent quality reaches integrated wastewater discharge standard one-level comprehensively.
The coagulant can also be used in poly-ferric chloride, bodied ferric sulfate, iron chloride, aluminium chloride and ferric sulfate
Other species；The activated carbon is 800 mesh powder activated carbons；The flocculant can also use its of gelatine and chitosan
His species；The method of the separation of solid and liquid is Bubble-floating Method.
Above-mentioned first time biochemical process and the amount of the dissolved oxygen in second of biochemical process are entered by dissolved oxygen meter
Row measurement.
Table 1 is referred to using the situation of the waste water after the method processing of the present embodiment.
Embodiment 2- embodiments 6
The parametric statistics of embodiment 2- embodiments 6 and embodiment 1 refers to table 1, and other are same as Example 1.
The performance statistics table of waste water after the embodiment 1-6 of table 1 parameter and processing
As known from Table 1, the biochemical selection of time of one-level is in 2-7h, and the residence time is too short, and microbial load is too high, on the one hand
Dissolved oxygen is difficult to improve, and another aspect treatment effect drastically declines.
Embodiment 7- embodiments 11
The 7-11 in conjunction with the embodiments of embodiment 1 parametric statistics refers to table 2, and other are same as Example 1.
The performance statistics table of the waste water of the embodiment 1 of table 2 in conjunction with the embodiments after 7-11 parameter and processing
As known from Table 2, the selection of time of secondary biochemical is in 5-12h.
Embodiment 12
The present embodiment difference from Example 1 is only that：Medicament is by coagulant and activated carbon group described in coagulation step
Conjunction is formed, and coagulant (aluminium polychloride, the PAC) addition is 100ppm, the quality proportioning of the coagulant and activated carbon
For 2：1.
The situation of waste water after being handled using the present embodiment is：COD is less than 100mg/L, and suspension (SS) is less than 50mg/L,
Colourity is less than 20.
Embodiment 13
The present embodiment difference from Example 1 is only that：Group of the subsequent treatment comprising Fe-C micro electrolysis and chemical oxidation
Close, and the oxidizing substance used in the chemical oxidation (can also use ozone, hypochlorous acid for hydrogen peroxide according to actual conditions
The oxidizing substances such as sodium).
The situation of waste water after being handled using the present embodiment is：COD is less than 100mg/L, and suspension (SS) is less than 50mg/L,
Colourity is less than 20.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (9)
1. a kind of processing method of betel nut waste water, it is characterised in that comprise the following steps：
The first step：Betel nut waste water through and removing Slag treatment；
Second step：Betel nut waste water after slagging-off is inserted in one-level biochemistry pool and carries out biochemistry for the first time, the first mixed liquor is obtained；
3rd step：First mixed liquor is inserted in first stage precipitation tank precipitate for the first time and obtains the first sludge and the first precipitation
Liquid, the first sludge is divided into two large divisions, and Part I is back in one-level biochemistry pool, and Part II is carried out into sludge concentration tank
Concentration；
4th step：First precipitated liquid is inserted in secondary biochemical pond and carries out second of biochemistry, the second mixed liquor is obtained；
5th step：Second mixed liquor is inserted in second-level settling pond precipitate for the second time and obtains the second sludge and the second precipitation
Liquid, the second sludge is divided into two large divisions, and Part I is back in secondary biochemical pond, and Part II is back to one-level biochemistry pool
In；
6th step：Second precipitated liquid is subjected to subsequent treatment, the water for meeting discharge standard is produced.
2. the processing method of betel nut waste water according to claim 1, it is characterised in that the first time is biochemical normal in normal temperature
Carried out under the conditions of pressure, the biochemical time is 2-7 hours, the amount of dissolved oxygen is 1-2mg/L；The first time is deposited in normal temperature and pressure bar
Carried out under part, the sedimentation basin residence time is 4-5h；At least there is clear water layer of the height for 1m in the first stage precipitation tank.
3. the processing method of betel nut waste water according to claim 1, it is characterised in that described second is biochemical normal in normal temperature
Carried out under the conditions of pressure, the biochemical time is 5-12 hours, the amount of dissolved oxygen is 2-4mg/L；The first time is deposited in normal temperature and pressure
Under the conditions of carry out, the sedimentation basin residence time be 4-5h；At least there is clear water layer of the height for 1m in the second-level settling pond.
4. the processing method of the betel nut waste water according to claim 1-3 any one, it is characterised in that the subsequent treatment
Combination comprising coagulation-flocculation or Fe-C micro electrolysis and chemical oxidation.
5. the processing method of betel nut waste water according to claim 4, it is characterised in that medicament in the coagulation-flocculation by
Coagulant and activated carbon are combined, and the quality proportioning of the coagulant and the activated carbon is 2：1, the wherein addition of coagulant
Measure 100-500mg/L；
Either, the medicament in the coagulation-flocculation is combined by coagulant, activated carbon and flocculant, the coagulant, work
Property charcoal and flocculant quality proportioning be 1：1-5：1；Flocculant is added after coagulant is added, the addition of flocculant is
10-100mg/L。
6. the processing method of betel nut waste water according to claim 5, it is characterised in that the coagulant is polyaluminium
At least one of iron, aluminium polychloride, bodied ferric sulfate, iron chloride, aluminium chloride and ferric sulfate；The activated carbon is 200-
1000 mesh powder activated carbons；The flocculant is at least one of polyacrylamide, gelatine and chitosan.
7. the processing method of betel nut waste water according to claim 4, it is characterised in that the oxygen used in the chemical oxidation
The property changed material is hydrogen peroxide or ozone.
8. the processing method of betel nut waste water according to claim 4, it is characterised in that the first time biochemistry and second
The amount of dissolved oxygen in biochemistry is measured by dissolved oxygen meter；The one-level biochemistry pool and the secondary biochemical pond are equal
It is connected with blower fan.
9. the processing method of betel nut waste water according to claim 1, it is characterised in that remove Slag treatment in the first step
Specifically：Removed the gred using the screen pack of 100 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710097373.9A CN107043195B (en) | 2017-02-22 | 2017-02-22 | Treatment method of areca nut wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710097373.9A CN107043195B (en) | 2017-02-22 | 2017-02-22 | Treatment method of areca nut wastewater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107043195A true CN107043195A (en) | 2017-08-15 |
| CN107043195B CN107043195B (en) | 2020-04-24 |
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| CN111099792A (en) * | 2019-12-31 | 2020-05-05 | 深圳粤鹏环保技术股份有限公司 | Areca nut wastewater treatment method and system |
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