CN105668942A - Treatment technique of high-concentration biorefractory organic wastewater - Google Patents
Treatment technique of high-concentration biorefractory organic wastewater Download PDFInfo
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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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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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
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/30—Nature of the water, waste water, sewage or sludge to be treated from the textile industry
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
- C02F3/02—Aerobic processes
- C02F3/025—Biological purification using sources of oxygen other than air, oxygen or ozone
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- Environmental & Geological Engineering (AREA)
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Abstract
The invention relates to the field of sewage treatment, particularly a treatment technique of high-concentration biorefractory organic wastewater. The technique comprises a main treatment channel and a circulating channel, wherein the main treatment channel comprises a wastewater inlet, a regulating facultative anaerobic tank, a floatation device, a composite organic wastewater treatment device, an electrodialysis plant, an ultrafiltration device, a membrane demineralizing device, a biochemical device and a wastewater outlet which are sequentially connected; wastewater enters the equipment from the wastewater inlet, and is discharged out of the wastewater outlet after being treated by all the parts; the electrodialysis plant is provided with a salt outlet; the membrane demineralizing device is provided with a pure water outlet; the circulating channel comprises a first circulating channel and a circulating channel; the first circulating channel is used for returning sludge treated by the composite organic wastewater treatment device to the regulating facultative anaerobic tank; and the second return channel is used for returning part of wastewater generated by the biochemical device to the regulating facultative anaerobic tank.
Description
Technical field
The present invention relates to sewage treatment area, be specifically related to the process technique of a kind of high concentration and refractory organic wastewater.
Background technology
High concentration and refractory organic wastewater is usually by industry discharges such as papermaking, leather, printing and dyeing and food, the production waste component of these industries is general all more complicated, pollutant kind is various, is generally of CODcr height, BOD5 height, SS concentration height, NH3-N concentration height, colourity high. Such as, the production process of yarn fabric can add substantial amounts of inorganic salts material, such as sodium carbonate, sodium bicarbonate (sodium bicarbonate), sodium polyphosphate, Sal (sodium chloride), Matrii Sulfas Exsiccatus (sodium sulfate), sodium hydrosulfite (sodium dithionate) etc., all substantially transfer in waste water after using, be the major pollutants of waste water. If do not carried out desalting processing, then in water, salts substances amount can run up to quite big, affects the reuse of water.
After deliberation, when the electrical conductivity of dyeing water is more than 3000uS/cm, when namely salinity is approximately more than 2000mg/L, salt easily produces mottling on fabric, affects the quality of product. Secondly, salinity is too high, wastewater biochemical is processed and produces harmful effect, even make sewage disposal system collapse. In the Industrial Wastewater Treatment water outlet of not reuse, total salinity is 2000mg/L (representing with total dissolved solid TDS), reclamation rate 80%. After circulation primary, the TDS of system will be added to 3400mg/L, will be added to 4560mg/L after secondary cycle, and repeatedly after circulation, the TDS in recycle-water will cause that production cannot be normally carried out.
Conventional physico-chemical process, bioanalysis etc. is adopted to process, although country and local wastewater discharge standard (COD < 100mg/L can be reached, SS < 60mg/L, pH6-9), but treated up to standard after waste water still nonresident portion Organic substance, microorganism, colloid, particle suspensions and great amount of soluble inorganic salt etc., thus limit it and recycle, directly outer row causes water resource waste.
Summary of the invention
The purpose of the present invention, is the problem in order to solve in background technology, it is provided that the process technique of a kind of high concentration and refractory organic wastewater.
The above-mentioned technical purpose of the present invention has the technical scheme that
A kind of process technique of high concentration and refractory organic wastewater, including: main treatment channel and circulation canal;
Described main treatment channel, including: waste water inlet, adjustment oxygen compatibility pool, air-floating apparatus, composite organic waste water process device, electrodialysis plant, ultrafiltration apparatus, film demineralizer, biochemical device and the wastewater outlet being sequentially connected with by main pipeline, waste water, from waste water inlet access arrangement, is discharged from wastewater outlet after each portion processes; Described electrodialysis plant is provided with salt outlet; Described film demineralizer is provided with pure water outlet;
Described circulation canal includes: the first circulation canal and the second circulation canal; Described first circulation canal includes, and regulates oxygen compatibility pool, air-floating apparatus, composite organic waste water process device and the first return flow line, and composite organic waste water is processed the mud after device processes and is back to adjustment oxygen compatibility pool by described first return flow line; Described second circulation canal includes: regulating oxygen compatibility pool, air-floating apparatus, composite organic waste water process device, electrodialysis plant, ultrafiltration apparatus, film demineralizer, biochemical device and the second return flow line, the effluent part of biochemical device output is back to adjustment oxygen compatibility pool by described second return flow line;
Treatment method is for high concentration and refractory organic wastewater, regulating reservoir+air supporting+composite organic waste water is adopted to process integrated apparatus to waste water pre-treatment, COD and the content of organics of waste water are greatly reduced, and compared with tradition sedimentation tank, COD removal efficiency is up to more than 90%. After this pre-treatment, pass through electrodialysis, salinity in waste water is reclaimed, electrodialysis is under the effect of DC electric field, ion permeable selective ion exchange membrane and migrate, make the membrane separating process that charged ion is separated from aqueous solution and other not charged components, have easy and simple to handle, energy consumption is low, the feature such as free from environmental pollution, but when organic concentration is higher in waste water, it is easily formed fouling membrane, be can ensure that the treatment effeciency of electrodialysis plant by the pre-treatment of this method;
Described electrodialysis plant is electron ion membrane concentrator matrix, and described electron ion membrane concentrator matrix includes M × N number of electron ion membrane concentrator, wherein M and N respectively integer be more than or equal to 1; The electrodialytic membranes of described electrodialysis plant is homogeneous ion-exchange membrane, membrane resistance 0.1-0.8 Ω/cm2, the degree of cross linking is 70-90%;
Described ultrafiltration apparatus is external pressure type hollow fiber membrane component, and the ratio of its film silk internal-and external diameter is 1:1.5-2.5, ultrafiltration module loading density 800-1200m2/m3. Ultrafiltration utilizes to have and selects to do separating medium through the thin film of ability, membranous wall gathers micropore, and stock solution is filter liquor by the side of film, solvent and small organic molecule through membranous wall under a certain pressure, and relatively the Organic substance of macromole is rejected by, thus reaching the purpose of separating substances and concentration. Membrane separating process is dynamic filtration process, and larger molecular organics, solid content are intercepted by membranous wall, flows out membrane module with concentrated solution, and film is not easily blocked, can life-time service continuously, filter process can run under room temperature, low pressure, without phase-state change, energy-efficient;
Described film demineralizer utilizes reverse osmosis membrane, the membrane separating process being power with barometric gradient, and it can effectively remove the dissolved salts colloid antibacterial in water and Organic substance as molecular filter. reverse osmosis process is the inverse process of naturally osmotic. in use salt-containing solution is applied pressure to overcome its naturally osmotic pressure for generation reverse osmosis process water pump, so that water is through reverse osmosis membrane, and the impurity such as dissolved salts in water are stoped the opposite side at reverse osmosis membrane, product water COD after process is at below 10mg/L, owing to the Main Salts in waste water is processed at electrodialysis plant, therefore the salinity of dense water is few, can biodegradability good, so reverse osmosis concentrated water being entered biochemical device carry out biochemical treatment, precipitate through biochemistry pool and sedimentation tank, effluent quality is good, meet emission request.
In this technique, also by circulation canal, composite organic waste water is processed the dope circular treatment again that device processes with film demineralizer, improve wastewater recycle rate, the wastewater recycle rate making a flow process reaches more than 90%, produces water-soluble solids content clearance >=90%, turbidity≤1, clearance >=95% of PH:6-8, COD≤10mg/L, COD.
As preferably, described composite organic waste water processes device and includes, first reaction zone, second reaction zone and the 3rd reaction zone, ultrasonic pulse device and ozone pipeline it is provided with in first reaction zone, being provided with anodic-cathodic and ferrum carbon filler in second reaction zone, the 3rd reaction zone is provided with flocculation reaction chamber and tube settler pond.
First reaction zone is provided with ozone pipeline and is provided with ultrasonic pulse device. Ultrasonic pulse device produces ultrasound wave by compressing air and is delivered in organic wastewater by ultrasound wave, produces cavitation at organic wastewater. Cavitation refers to, when applying the ultrasound wave of certain frequency and intensity in liquid, can produce substantial amounts of micro-bubble, and these micro-bubbles are formed at it, vibrate, grow the series of physical chemical change caused in the process being contracted to collapse. Cavitation bubble within the extremely short time and in minimum space, produces high temperature and high pressure the shock wave that association is strong when collapse, and this is just that the reaction being under general condition difficult to provides a kind of new physical environment. In such a case, then pass into ozone, just can effectively strengthen the oxidability of ozone; By ferrum carbon filler, some catalytic oxidation occurring in second reaction zone, iron-carbon micro-electrolysis is when ferrum carbon granule is immersed in acid waste water, due to the difference in Electrode Potential between ferrum and carbon, can form numerous micro-galvanic element in waste water. Iron ion and hydroxide ion easily generate hydrated ferric oxide., and hydrated ferric oxide. has very strong flocculation, and the hydrated ferric oxide. generated is more much better than than the flocculation of outer addition hydrated ferric oxide.; Ultrasonic not only have potentiation to the oxidation of ozone, and iron-carbon micro-electrolysis also has synergism. The ultrasonic mass transfer in liquid phase that can strengthen iron-carbon micro-electrolysis, also can reduce the concentration polarization of iron-carbon micro-electrolysis; 3rd reaction zone is arranged on the lower section of second reaction zone, and under gravity, waste water enters tube settler pond from flocculation reaction chamber, is back to adjustment oxygen compatibility pool reprocessing after precipitation through the first return flow line.
As preferably, described circulation canal also includes the 3rd circulation canal, and described 3rd circulation canal includes producing pond, backwashing pump and the 3rd return flow line; Described 3rd circulation canal is arranged in electrodialysis plant, ultrafiltration apparatus and film demineralizer the product water place of at least one, and the water produced in pond is back to corresponding device in order to backwash by the 3rd return flow line; Described 3rd circulation canal starts an automatic back-washing per half an hour, rinses flux and controls at 100-120L/m2 hr; Backwash pressure≤0.2MPa; 20-40 second backwash time. Increase the 3rd circulation canal automatic back-washing in order to electrodialysis plant, ultrafiltration apparatus and film demineralizer, can effectively protect the functional membrane assembly of three, be greatly improved service life and water treatment efficiency.
Preferred as such scheme, described ultrafiltration apparatus entrance is additionally provided with cartridge filter, and in order to remove large granular impurity, waste water adds antibacterial when entering cartridge filter, in order to protect ultrafiltration apparatus membrane module.
Preferred as such scheme, waste water adds antisludging agent before entering described film demineralizer, and described antisludging agent is ATMP, HEDP or EDTMPA, in order to protecting film demineralizer membrane module.
As preferably, described air-floating apparatus and composite organic waste water process and are additionally provided with more medium filter between device, in order to pretreatment.
As preferably, described biochemical device includes biochemistry pool and sedimentation tank, and the surface loading of described sedimentation tank is 0.3-0.6m/m h, relatively low surface loading, to extend pollutant residence time in pond, improves effluent quality.
As preferably, described biochemical device and the second junction, return flow line are provided with COD detecting device, control the COD of discharge water at below 100ml/L.
As preferably, being provided with grid and collecting-tank between described waste water inlet and adjustment oxygen compatibility pool, grid gap is 16-25mm.
As preferably, the total residence time regulating oxygen compatibility pool is 20-28h, includes regulating time 10-16h and double oxygen time 4-18h respectively.
As preferably, described waste water enters air-floating apparatus and adds PAC and PAM as coagulant and flocculant, and the concentration of PAC is the concentration of 80mg/L～160mg/L, PAM is 10mg/L～40mg/L.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the present invention;
Fig. 2 is the structural representation that in the present invention, composite organic waste water processes device;
Fig. 3 is the schematic diagram of the embodiment of the present invention 2;
Fig. 4 is the schematic diagram of the embodiment of the present invention 3.
Detailed description of the invention
Specific examples below is only explanation of the invention; it is not limitation of the present invention; the present embodiment can be made the amendment not having creative contribution as required by those skilled in the art after reading this specification, but as long as being affected by the protection of Patent Law in scope of the presently claimed invention.
Below in conjunction with accompanying drawing, with embodiment, the present invention is described in detail.
Embodiment 1:
According to Fig. 1, the process technique of a kind of high concentration and refractory organic wastewater, including main treatment channel 1 and circulation canal 2;
Main treatment channel 1, including: waste water inlet 11, adjustment oxygen compatibility pool 12, air-floating apparatus 13, composite organic waste water process device 14, electrodialysis plant 15, ultrafiltration apparatus 16, film demineralizer 17, biochemical device 18 and the wastewater outlet 19 being sequentially connected with by main pipeline, waste water, from waste water inlet 11 access arrangement, is discharged from wastewater outlet 19 after each portion processes; Electrodialysis plant 15 is provided with salt outlet 151; Film demineralizer 17 is provided with pure water outlet 171;
Circulation canal 2 includes: the first circulation canal 21 and the second circulation canal 22; First circulation canal 21 includes, regulating oxygen compatibility pool 12, air-floating apparatus 13, composite organic waste water process device 14 and the first return flow line 211, composite organic waste water is processed the mud after device 14 processes and is back to adjustment oxygen compatibility pool 12 by the first return flow line 211; Second circulation canal 22 includes: regulating oxygen compatibility pool 12, air-floating apparatus 13, composite organic waste water process device 14, electrodialysis plant 15, ultrafiltration apparatus 16, film demineralizer 17, biochemical device 18 and the second return flow line 221, the effluent part of biochemical device 18 output is back to adjustment oxygen compatibility pool 12 by the second return flow line 221;
Being provided with grid 5 and collecting-tank 6 between waste water inlet 11 and adjustment oxygen compatibility pool 12, grid 5 gap is 20mm; The total residence time regulating oxygen compatibility pool 12 is 24h, includes regulating time 15h and double oxygen time 9h respectively;
According to Fig. 2, composite organic waste water processes device 14 and includes, first reaction zone 141, second reaction zone 142 and the 3rd reaction zone 143, ultrasonic pulse device 1411 and ozone pipeline 1412 it is provided with in first reaction zone 141, being provided with anodic-cathodic 1421 and ferrum carbon filler 1422 in second reaction zone 142, the 3rd reaction zone 143 is provided with flocculation reaction chamber 1431 and tube settler pond 1432;
Electrodialysis plant 15 is electron ion membrane concentrator matrix, and its electrodialytic membranes is homogeneous ion-exchange membrane, membrane resistance 0.1-0.8 Ω/cm2, and the degree of cross linking is 70-90%;
Ultrafiltration apparatus 16 is external pressure type hollow fiber membrane component, and the ratio of its film silk internal-and external diameter is 1:1.5-2.5, ultrafiltration module loading density 800-1200m2/m3;
Biochemical device 18 includes biochemistry pool 181 and sedimentation tank 182, and the surface loading of sedimentation tank 182 is 0.3-0.6m/m h.
Air-floating apparatus 13 and composite organic waste water process and are additionally provided with more medium filter 3 between device 14; waste water enters air-floating apparatus 13 and adds PAC and PAM as coagulant and flocculant; the concentration of PAC is 150mg/L; the concentration of PAM is 40mg/L; ultrafiltration apparatus 16 entrance is additionally provided with cartridge filter 4; in order to remove large granular impurity, waste water adds antibacterial when entering cartridge filter 4, in order to protect ultrafiltration apparatus 16 membrane module. Waste water adds antisludging agent before entering film demineralizer 17, and antisludging agent is HEDP, in order to protecting film demineralizer 17 membrane module.
Being passed into from waste water inlet 11 by the high concentration and refractory organic wastewater of COD to be 10000mg/L, TDS be 2000mg/L, after regulating oxygen compatibility pool 12, COD is reduced to 9000mg/L; After processing device 14 by composite organic waste water, COD is reduced to 460mg/L; It is reduced to below 1000mg/L by TDS after electrodialysis plant 15, reclaims a large amount of salinity; By output pure water COD after ultrafiltration apparatus 16 and film demineralizer 17 less than 10mg/L, dense water COD is 800mg/L, and after biochemical device 18 processes, COD discharges after being reduced to below 100mg/L.
Embodiment 2:
Being different in that with above-described embodiment 1, according to Fig. 3, circulation canal 2 also includes the 3rd circulation canal 23, and the 3rd circulation canal 23 includes producing pond 231, backwashing pump 232 and the 3rd return flow line 233; 3rd circulation canal 23 is arranged on the product water place in electrodialysis plant 15, ultrafiltration apparatus 16 and film demineralizer 17, and the water produced in pond 231 is back to corresponding device in order to backwash by the 3rd return flow line 233; 3rd circulation canal 23 starts an automatic back-washing per half an hour, rinses flux and controls at 100-120L/m2 hr; Backwash pressure≤0.2MPa; 20-40 second backwash time. Increase the 3rd circulation canal 23 automatic back-washing in order to electrodialysis plant 15, ultrafiltration apparatus 16 and film demineralizer 17, can effectively protect the functional membrane assembly of three, be greatly improved service life and water treatment efficiency.
Embodiment 3:
Being different in that with above-described embodiment 1, according to Fig. 4, biochemical device 18 and the second junction, return flow line 221 are provided with COD detecting device 183, control the COD of discharge water at below 100ml/L.
Claims (10)
1. the process technique of a high concentration and refractory organic wastewater, it is characterised in that including: main treatment channel (1) and circulation canal (2);
Described main treatment channel (1), including: waste water inlet (11), adjustment oxygen compatibility pool (12), air-floating apparatus (13), composite organic waste water process device (14), electrodialysis plant (15), ultrafiltration apparatus (16), film demineralizer (17), biochemical device (18) and the wastewater outlet (19) being sequentially connected with by main pipeline, waste water, from waste water inlet (11) access arrangement, is discharged from wastewater outlet (19) after each portion processes; Described electrodialysis plant (15) is provided with salt outlet (151); Described film demineralizer (17) is provided with pure water outlet (171);
Described circulation canal (2) including: the first circulation canal (21) and the second circulation canal (22);
Described first circulation canal (21) includes, regulating oxygen compatibility pool (12), air-floating apparatus (13), composite organic waste water process device (14) and the first return flow line (211), composite organic waste water is processed the mud after device (14) processes and is back to adjustment oxygen compatibility pool (12) by described first return flow line (211);
Described second circulation canal (22) including: regulate oxygen compatibility pool (12), air-floating apparatus (13), composite organic waste water process device (14), electrodialysis plant (15), ultrafiltration apparatus (16), film demineralizer (17), biochemical device (18) and the second return flow line (221), and the effluent part of biochemical device (18) output is back to and regulates oxygen compatibility pool (12) by described second return flow line (221);
Described electrodialysis plant (15) is electron ion membrane concentrator matrix, and its electrodialytic membranes is homogeneous ion-exchange membrane, membrane resistance 0.1-0.8 Ω/cm2, the degree of cross linking is 70-90%;
Described ultrafiltration apparatus (16) is external pressure type hollow fiber membrane component, and the ratio of its film silk internal-and external diameter is 1:1.5-2.5, ultrafiltration module loading density 800-1200m2/m3。
2. the process technique of a kind of high concentration and refractory organic wastewater according to claim 1, it is characterized in that, described composite organic waste water processes device (14) and includes, first reaction zone (141), second reaction zone (142) and the 3rd reaction zone (143), ultrasonic pulse device (1411) and ozone pipeline (1412) it is provided with in first reaction zone (141), anodic-cathodic (1421) and ferrum carbon filler (1422) it is provided with in second reaction zone (142), 3rd reaction zone (143) is provided with flocculation reaction chamber (1431) and tube settler pond (1432).
3. the process technique of a kind of high concentration and refractory organic wastewater according to claim 1 and 2, it is characterized in that, described circulation canal (2) also includes the 3rd circulation canal (23), and described 3rd circulation canal (23) includes producing pond (231), backwashing pump (232) and the 3rd return flow line (233); Described 3rd circulation canal (23) is arranged in electrodialysis plant (15), ultrafiltration apparatus (16) and film demineralizer (17) the product water place of at least one, and the water produced in pond (231) is back to corresponding device in order to backwash by the 3rd return flow line (233); Described 3rd circulation canal (23) starts an automatic back-washing per half an hour, rinses flux and controls at 100-120L/m2Hr; Backwash pressure≤0.2MPa; 20-40 second backwash time.
4. the process technique of a kind of high concentration and refractory organic wastewater according to claim 3, it is characterised in that described air-floating apparatus (13) and composite organic waste water process and be additionally provided with more medium filter (3) between device (14).
5. the process technique of a kind of high concentration and refractory organic wastewater according to claim 4, it is characterized in that, described biochemical device (18) includes biochemistry pool (181) and sedimentation tank (182), and the surface loading of described sedimentation tank (182) is 0.3-0.6m/m h.
6. the process technique of a kind of high concentration and refractory organic wastewater according to claim 5, it is characterized in that, described biochemical device (18) and the second return flow line (221) junction are provided with COD detecting device (183), control the COD of discharge water at below 100ml/L.
7. the process technique of a kind of high concentration and refractory organic wastewater according to claim 6, it is characterized in that, described ultrafiltration apparatus (16) entrance is additionally provided with cartridge filter (4), and in order to remove large granular impurity, waste water adds antibacterial when entering cartridge filter (4).
8. the process technique of a kind of high concentration and refractory organic wastewater according to claim 7, it is characterised in that be provided with grid (5) and collecting-tank (6) between described waste water inlet (11) and adjustment oxygen compatibility pool (12).
9. the process technique of a kind of high concentration and refractory organic wastewater according to claim 8, it is characterised in that the total residence time regulating oxygen compatibility pool (12) is 20-28h, includes regulating time 10-16h and double oxygen time 4-18h respectively.
10. the process technique of a kind of high concentration and refractory organic wastewater according to claim 9, it is characterized in that, described waste water enters air-floating apparatus (13) and adds PAC and PAM as coagulant and flocculant, the concentration of PAC is 80mg/L～160mg/L, the concentration of PAM is 10mg/L～40mg/L, waste water enters the described front addition antisludging agent of film demineralizer (17), and described antisludging agent is ATMP, HEDP or EDTMPA.
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Cited By (3)
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| CN106186524A (en) * | 2016-08-03 | 2016-12-07 | 吴小慧 | One way of life sewage compounding method |
| CN106348519A (en) * | 2016-08-22 | 2017-01-25 | 江苏金点环保科技有限公司 | Method for treating petroleum drilling high-salinity wastewater by adopting dual ionic membrane electrochemical technique combined with biochemical technique |
| CN109279726A (en) * | 2018-11-28 | 2019-01-29 | 广东佳德环保科技有限公司 | A kind of organic wastewater treating system and processing method |
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| CN109279726A (en) * | 2018-11-28 | 2019-01-29 | 广东佳德环保科技有限公司 | A kind of organic wastewater treating system and processing method |
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