CN105417897B - The processing system of bio-refractory waste water - Google Patents

The processing system of bio-refractory waste water Download PDF

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Publication number
CN105417897B
CN105417897B CN201610014601.7A CN201610014601A CN105417897B CN 105417897 B CN105417897 B CN 105417897B CN 201610014601 A CN201610014601 A CN 201610014601A CN 105417897 B CN105417897 B CN 105417897B
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filter tank
baf
waste water
bio
water
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CN105417897A (en
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雍毅
吴怡
钱骏
付强
马凡江
竺美
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SICHUAN INSTITUTE OF ENVIRONMENTAL PROTECTION SCIENCE
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SICHUAN INSTITUTE OF ENVIRONMENTAL PROTECTION SCIENCE
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • 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
    • C02F3/12—Activated sludge processes
    • C02F3/1236—Particular type of activated sludge installations
    • C02F3/1268—Membrane bioreactor systems
    • 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
    • C02F3/30—Aerobic and anaerobic processes

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Biological Treatment Of Waste Water (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

The invention belongs to the processing system of the bio-refractory waste water in field of waste water treatment, it is connected in sequence by the aerobic biologic membrane filter tank of two-stage half, activated carbon BAF and floating stuffing BAF, half aerobic biologic membrane filter tank is the aerobe filter bed of anaerobism half, filter bed bottom is the mm of particle diameter 60~80 gravel filling, middle level is the mm of particle diameter 10~50 gravel filling, and upper strata is the mm of particle diameter 1.5 washed ore；Active carbon filler is loaded in activated carbon BAF, aerator and backwashing equipment are installed, aeration mode is aerated for filter tank bottom；Cylindrical polyethylene plastic filler is loaded in floating stuffing BAF, aerator is installed, aeration mode is aerated for filter tank bottom.The processing system reoxygenation effect of bio-refractory waste water provided by the invention is good, and low cost, continuum micromeehanics and impact load is higher, operational administrative is easy, treatment effect stably reaching standard.

Description

The processing system of bio-refractory waste water
Technical field
The invention belongs to field of waste water treatment, and in particular to a kind of processing system of bio-refractory waste water.
Background technology
The environmental protection disposal and reuse of bio-refractory waste water are one of problem that Industrial-Enterprises in China is faced all the time. Bio-refractory waste water species is complicated, and based on industrial wastewater, industry is related to petrochemical industry, printing and dyeing, plating, pulping and paper-making, system Medicine, agricultural chemicals and food etc., it is mainly characterized in that organic concentration is big, high toxicity, high chroma and high salinity, BOD/COD ratios are small In 0.3.The bio-refractory waste water processing method that Chinese patent CN1295033 and CN101607751 are provided is required for using electricity Oxidizing process, high energy consumption, operating cost is high, and operational administrative is complicated, and treatment effect is unstable.Bacteria bed system（Biofilter System）Grow up on the basis of traditional wastewater land percolation processing system, generally use waterflooding and fall dry alternate Working method, using soil aquifer to sewage carry out integrated treatment, by retention, it is biodegradable synergy make pollution Thing is removed.The characteristics of technology is to be not required to add medicament, it is not required that high-energy equipment, reduces the investment for the treatment of facility And running expense.But traditional system still has the problem of floor space is big, and treatment effeciency is relatively low low with anti-shock loading, no It can be suitably used for the processing of bio-refractory waste water.BAF BAF (Biological Aerated Filter) is in recent years Come a kind of catalytic oxidation biomembrance process to grow up on ordinary biofilter, the characteristics of its is maximum be collection biological oxidation and Suspended solid is retained in one, saves follow-up secondary sedimentation tank, floor space is small, and the volumetric loading of organic matter is high, and waterpower is born Lotus is big, and hydraulic detention time is short, is widely used in sanitary sewage, and the difficult biochemistry such as Partial Food processing waste water, malting effluent gives up In the processing of water.But it is structurally and operationally complex, energy consumption is relatively also higher, treatment effect still reach to less than《Town sewage Treatment plant's pollutant emission standard》.
The content of the invention
It is an object of the invention to overcome operating cost height in the prior art, operational administrative is complicated, and treatment effeciency is relatively low Defect, there is provided a kind of reoxygenation effect is good, inexpensive, continuum micromeehanics and impact load are higher, and operational administrative is easy, and treatment effect is steady The processing system of fixed bio-refractory waste water up to standard.
The purpose of the present invention is achieved through the following technical solutions：
The processing system of the bio-refractory waste water of the present invention is by the aerobic biologic membrane filter tank of two-stage half, activated carbon aeration and biological Filter tank and floating stuffing BAF are connected in sequence, it is characterised in that half aerobic biologic membrane filter tank is that anaerobism-half is good Oxygen bacteria bed, Inlet and outlet water mode are the mm of particle diameter 60~80 gravel filling using top water inlet bottom water outlet, filter bed bottom, Middle level is the mm of particle diameter 10~50 gravel filling, and upper strata is the mm of particle diameter 1.5 washed ore；Activated carbon BAF Inlet and outlet water Mode uses top water inlet bottom water outlet, loads active carbon filler in pond, installs aerator and backwashing equipment, aeration mode It is aerated for filter tank bottom；Floating stuffing BAF Inlet and outlet water mode uses bottom water inlet top water outlet, and circle is loaded in pond Cylindricality vinyon filler, installs aerator, and aeration mode is aerated for filter tank bottom.
In such scheme, cloth pond is provided with before the half aerobic biologic membrane filter tank.
In such scheme, the aerator is connected by blower fan with pipeline to be formed, and backwashing equipment is by recoil water pump and instead Wash tub pipe connection composition, activated carbon BAF and floating stuffing BAF are carried out respectively watercourse aeration and Backwash.
In such scheme, the activated carbon BAF is connected by intermediate pool and the aerobic biologic membrane filter tank of two level half Connect.
In such scheme, the floating stuffing BAF is sequentially connected with sedimentation basin and clear water reserviors.
The present invention uses four units, respectively the aerobic biologic membrane filter tank of one-level half, the aerobic biologic membrane filter tank of two level half, lives Property charcoal BAF and floating stuffing BAF, using half aerobic biologic membrane filter tank as core, auxiliary two-stage biological Filter tank is handled, and increases treatment effeciency, increases oxidation effectiveness.
The course of work of the present invention is as follows：
(1) the aerobic biologic membrane filter tank of one-level half：Bio-refractory waste water is pumped into the aerobic biologic membrane filter tank of one-level half to carry out Processing.
(2) the aerobic biologic membrane filter tank of two level half：The waste water handled by the aerobic biologic membrane filter tank of one-level half is inputted with pump The aerobic biologic membrane filter tank of two level half is handled；
(3) activated carbon BAF：The waste water handled by the aerobic biologic membrane filter tank of two level half enters intermediate pool, then The processing of activated carbon BAF is lifted into by pump, Air Exposure is carried out to filter tank by blower fan, adjusts aeration quantity, simultaneously Observe activated carbon biofilm situation；
(4) floating stuffing BAF：It will enter again through the waste water that activated carbon BAF is handled from bottom Floating stuffing biological filter tank carries out Air Exposure, controls oxygen in water amount, realizes dissolving oxygen gradient distributional environment, realizes biology The symbiosis of anaerobism and oxygen and aerobic three kinds of microorganisms in filter tank, to realize the purpose of the pollutants such as organics removal and ammonia nitrogen, warp The waste water crossed after the processing of floating stuffing BAF is discharged into sedimentation basin and clear water reserviors, discharge or reuse up to standard.
The present invention sewage disposal principle be：
Half aerobic biologic membrane filter tank system utilizes natural physical filtering, absorption and the biochemical mistake of microorganism of artificial soil Journey, enable sewage preliminary purification, particularly relieve the bio-toxicity of bio-refractory waste water, be advantageous in handling in next step Microorganism growth.
Activated carbon and floating stuffing BAF are built upon a kind of biofilter in biological film process, are to filter The granular filler of high-specific surface area is loaded in pond, to provide the carrier of microbial film growth, is aerated, makes in filter material layer blowing air down Air inversely or in the same direction contacts with sewage, the organic matter in sewage is dropped with filler surface biological film by biochemical reaction Solution, filler play physical filtering effect simultaneously.And activated carbon filter and Suspended Media Filter Bed is not both, activated carbon granule except Play a part of outside biofilm biological oxidation, absorbed portion organic matter can also be retained, its suction-operated is more than floating stuffing, and suspends It is easily biofilm that filler, which filters out feature, is easy to biochemical treatment.
Difficult biochemical waste water is generally the tail water after anaerobic-aerobic is handled, and its biodegradability extreme difference, advanced treating is very Difficulty, key are that characteristic microorganism is difficult to cultivate, it is necessary to have inhibitory action to biochemical treatment in reducing waste water in front end Material, single-minded flora is formed, and improve wastewater biodegradability.
The characteristics of present invention processing difficult biochemical waste water, is that BAF is creative and has used activated carbon, efficiently filled out Material and multistep treatment associated with biomembrane filter tank.Activated carbon has two effects, and one is the organic of some bio-refractories of absorption Material, secondly the micropore of activated carbon and great specific surface area provide growth and catalytic oxidation for exclusive aerobic microbiological flora Place.And efficient floating stuffing aeration biological filter chamber treatment system, its feature is easy to be filmed, and biomass is big, such as difficult biochemical useless Aqueous nature is consistent, and operation, effect of inoculation are preferable, then the tolerance of microorganism and selectivity are more consistent after biofilm, difficult for processing Biochemical waste water effect is more obvious.But its shortcoming is that the microorganism species of culture are relatively simple, and tolerance is general, once waste water water Matter varies widely, and its aerobic microbiological treatment effect may give a discount.Therefore, the present invention is aerobic in front end addition two-stage half Biomembrane filter tank, using the grit of different-grain diameter as filler, form half from top to bottom in whole filter tank and aerobic arrived again to anaerobism Half aerobic environment, cultivates exclusive microorganism, and the chain rupture and resolution at initial stage are carried out to difficult biochemical waste water, is converted into its macromolecular Small molecule, there is good effect for the Aerobic Process for Treatment of subordinate's BAF, while reduction is also functioned to by grit filtering Organic loading, remove the effect of bulky grain and partial decolorization.The present invention is relatively low for load（200~400 mg/L）Hardly possible it is biochemical Waste water（Such as wastewater from chemical industry）There is an obvious and stable treatment effect, and it is more satisfactory to remove effect while to ammonia nitrogen, gives up Water can stably reach relevant criterion and be discharged.
The beneficial effects of the present invention are：Technique is practical, and treatment effect is stable, and the scope of application is wider, based on this also The total system of a variety of chemical pail pack cleaning waste water can be developed, facility structure is simple and safeguards simply, safeguards into This is low, and actual processing effect is：It it is 25 DEG C or so in temperature, a cubic meter of water processing cost is about 0.7 yuan, and COD processing removes Rate can reach national standard discharge up to parameters such as 70 %, colourity, ammonia nitrogens, and secondary pollution is not caused to environment, and completely Reach Treated sewage reusing water inlet index.Premenstrual end can be made to be not easy the industrial wastewater water quality of biochemical treatment after handling to reach or be better than 《Urban wastewater treatment firm pollutant emission standard》（GB18919-2002）One-level B standard.Each unit of the present invention can not only be used for giving birth to The pre-treating technology of thing processing, be advantageous to sedimentation and the bio-film colonization of sludge, can also be used as underload pole after biochemical processing process The independent processing method of difficult biochemical waste water uses, and can further realize reduces the pollutant indexs such as COD, ammonia nitrogen and decolouring and deodorizing, Treatment effect stably reaching standard.The present invention is applied widely, and disposal ability is strong, is applicable not only to the tail end and depth of industrial wastewater Reason, can be also used for the processing of other sanitary sewages.
Therefore, high instant invention overcomes operating cost in the prior art, operational administrative is complicated, and treatment effeciency is relatively low to be lacked Fall into, there is provided bio-refractory waste water processing system reoxygenation effect it is good, low cost, continuum micromeehanics and impact load is higher, behaviour It is easy to make management, treatment effect stably reaching standard.
Brief description of the drawings
Fig. 1 is the schematic diagram of the present invention.
Fig. 2 is the underload biomembrane filter tank schematic diagram of the present invention.
Fig. 3 is Fig. 2 N-N diagrammatic cross-sections.
Fig. 4 is the activated carbon BAF and floating stuffing BAF schematic diagram of the present invention.
In accompanying drawing, 1：Water distributor, 2：Water inlet pipe, 3：Delivery port, 4：Waterwall, 5：Activated carbon BAF be aerated into Tracheae, 6：Active carbon filler, 7：Activated carbon BAF aeration head, 8：Recoil water pump, and 9：Backwash water pipe, 10：Blower fan Escape pipe, 11：Floating stuffing BAF aeration air inlet pipe, 12：Floating stuffing, 13：Floating stuffing BAF Aeration head, 14：Concrete walls.
Embodiment
Below in conjunction with the accompanying drawings and the present invention is described in further detail in embodiment, but the present invention is not limited only to the embodiment.
Embodiment one
The processing system of the bio-refractory waste water of this example as shown in Figure 1, Figure 2, Figure 3 and Figure 4, by the aerobe of two-stage half Membrane filtration pond, activated carbon BAF and floating stuffing BAF are connected in sequence, half aerobic biologic membrane filter tank For the aerobe filter bed of anaerobism-half, bottom of pond is concrete foundation, and side wall waterwall 4 is brick, and water distribution system pipe fitting is using poly- Vinyl chloride resin（UPVC）Material, Inlet and outlet water mode is using top water inlet bottom water outlet, and bottom filling is rebasing using gravel, particle diameter 60~80 mm, the thickness degree about 400 mm, middle part uses particle diameter, and for 10~50 mm gravel fillings, the mm of thickness 300, top is adopted With the mm washed ores of particle diameter 1.5, thickness is 600 mm.Activated carbon BAF Inlet and outlet water mode is gone out using top water inlet bottom Water, active carbon filler 6 is loaded in pond, active carbon filler 6 uses the mm column-shaped active carbons of φ 5 × 8, and thickness of filter bed is 2400 mm； Aerator and backwashing equipment are installed, aeration mode is aerated for filter tank bottom.Floating stuffing BAF Inlet and outlet water side Formula is using bottom water inlet top water outlet, and the floating stuffing 12 loaded in pond is cylindrical polyethylene plastic filler, size φ 25 × 9 mm, the m of specific surface area 82/ g or so, the mm of floating stuffing layer height 2000；Aerator is installed, aeration mode is filter tank bottom Portion is aerated.
Cloth pond is provided with before half aerobic biologic membrane filter tank.
The aerator of activated carbon BAF by blower fan escape pipe 10 and activated carbon BAF be aerated into Tracheae 5 and the connection composition of activated carbon BAF aeration head 7, watercourse aeration is carried out to activated carbon BAF.It is living Property charcoal BAF backwashing equipment by backwash water pipe 9, recoil water pump 8 and activated carbon BAF aeration head 7 connection compositions, are backwashed to activated carbon BAF.
The aerator of floating stuffing BAF is exposed by blower fan escape pipe 10 and floating stuffing BAF Gas air inlet pipe 11 and the connection composition of floating stuffing BAF aeration head 13, expose to floating stuffing BAF Gas reoxygenation.
Activated carbon BAF is connected by intermediate pool with the aerobic biologic membrane filter tank of two level half.
Floating stuffing BAF is sequentially connected with sedimentation basin and clear water reserviors.
System hydraulic load is 0.2~2 m3/(m2D), 1 d：3d（The d of water distribution 1, run 3 d）.
Monitoring result shows, enters half aerobic biologic membrane after a series of processing units through the cleaning waste water of front-end processing COD average out to 200 mg/L, NH of filter tank system3- N is 5 mg/L, the processing system of the bio-refractory waste water by this example After processing, water outlet COD average out to 60 mg/L, NH3- N is 0 mg/L, and COD clearances are 70 %, NH3- N clearances are 100 %. Sewage effluent quality reaches《Urban wastewater treatment firm pollutant emission standard》（GB18919-2002）One-level B standard.
Experimental data is shown：After stable, COD is 235.2~311.1 mg/L in difficult biochemical wastewater from chemical industry, is passed through 169.6~192.6 mg/L are reduced to behind the aerobic biologic membrane filter tank of one-level half, two level is later 143.5~166.4 mg/L, is passed through Activated carbon aerating filter is 73.41~104.4 mg/L, is 47.4~68.1 mg/L after floating stuffing aerating filter.
Under the conditions of increasing waste water load COD and being 500 mg/L, last water outlet COD meets national sewage in 82.9 mg/L Comprehensive discharge standard.
Embodiment two
The processing system of the bio-refractory waste water of this example in addition to there is no cloth pond before half aerobic biologic membrane filter tank, remaining With embodiment one.
Embodiment three
The processing system of the bio-refractory waste water of this example removes no intermediate pool, and activated carbon BAF is directly and two The connection of half aerobic biologic membrane filter tank of level is outer, and remaining is the same as embodiment one.

Claims (5)

  1. A kind of 1. processing system of bio-refractory waste water, it is characterised in that：Exposed by the aerobic biologic membrane filter tank of two-stage half, activated carbon Gas biofilter and floating stuffing BAF are connected in sequence, and half aerobic biologic membrane filter tank is the aerobic life of anaerobism-half Thing filter bed, Inlet and outlet water mode is using top water inlet bottom water outlet, and filter bed bottom is the mm of particle diameter 60 ~ 80 gravel filling, and middle level is The mm of particle diameter 10 ~ 50 gravel filling, upper strata are the mm of particle diameter 1.5 washed ore, and half aerobic biologic membrane filter tank utilizes artificial soil Natural physical filtering, absorption and the biochemical process of microorganism, enable sewage preliminary purification, release the life of bio-refractory waste water Thing toxicity, be advantageous to the microorganism growth in handling in next step；Front end adds the aerobic biologic membrane filter tank of two-stage half, with different-grain diameter Grit as filler, it is aerobic again exclusive to half aerobic environment, culture to anaerobism to form half from top to bottom in whole filter tank Microorganism, the chain rupture and resolution at initial stage are carried out to difficult biochemical waste water, its macromolecular is converted into small molecule, be aerated and give birth to for subordinate The Aerobic Process for Treatment in thing filter tank has a good effect, while also functions to reduction organic loading by grit filtering, remove bulky grain and The effect of partial decolorization；Activated carbon BAF Inlet and outlet water mode uses top water inlet bottom water outlet, and activity is loaded in pond Carbon filling material, aerator and backwashing equipment are installed, aeration mode is aerated for filter tank bottom, and activated carbon has two effects, one To adsorb the organic substance of bio-refractory, secondly the micropore of activated carbon and great specific surface area are exclusive aerobic microbiological bacterium Group provides the place of growth and catalytic oxidation；Floating stuffing BAF Inlet and outlet water mode is gone out using bottom water inlet top Water, cylindrical polyethylene plastic filler is loaded in pond, aerator is installed, aeration mode is that filter tank bottom is aerated, in control water Dissolved oxygen content, dissolving oxygen gradient distributional environment is realized, realize being total to for anaerobism in biofilter, simultaneous oxygen and aerobic three kinds of microorganisms It is raw；The granular filler of high-specific surface area is loaded in activated carbon BAF and floating stuffing BAF, to carry For the carrier of microbial film growth, it is aerated in filter material layer blowing air down, air inversely or is in the same direction contacted with sewage, make in sewage Organic matter degraded with filler surface biological film by biochemical reaction, filler play simultaneously physical filtering effect.
  2. 2. the processing system of bio-refractory waste water according to claim 1, it is characterised in that half aerobic biologic membrane Cloth pond is provided with before filter tank.
  3. 3. the processing system of bio-refractory waste water according to claim 1, it is characterised in that the aerator is by wind Machine connects composition with pipeline, and backwashing equipment is connected with backwash water pipe by recoil water pump and formed, and activated carbon is aerated given birth to respectively Thing filter tank and floating stuffing BAF carry out watercourse aeration and backwash.
  4. 4. the processing system of bio-refractory waste water according to claim 1, it is characterised in that the activated carbon aeration life Thing filter tank is connected by intermediate pool with the aerobic biologic membrane filter tank of two level half.
  5. 5. the processing system of bio-refractory waste water according to claim 1, it is characterised in that the floating stuffing aeration Biofilter is sequentially connected with sedimentation basin and clear water reserviors.
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CN102476863A (en) * 2010-11-24 2012-05-30 天津市塘沽区鑫宇环保科技有限公司 Enhanced biochemical treatment method for high ammonia-nitrogen wastewater
CN104876395B (en) * 2015-05-14 2017-03-22 哈尔滨工业大学 Two-stage deep-bed upward flow composite filter material biological filter
CN205347141U (en) * 2016-01-11 2016-06-29 四川省环境保护科学研究院 Processing system of difficult biochemical degradation waste water

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