CN105601035A - Water treatment equipment for up-to-standard discharge of high concentrated organic wastewater - Google Patents
Water treatment equipment for up-to-standard discharge of high concentrated 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/26—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24
- B01J31/38—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24 of titanium, zirconium or hafnium
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- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
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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
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- 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
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- C02F3/02—Aerobic processes
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
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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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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Abstract
The invention discloses water treatment equipment for up-to-standard discharge of high concentrated organic wastewater. The water treatment equipment comprises a catalytic oxidation tank, an oxidation stabilization tank, a post-biochemical BAF (biological aerated filter) tank, a clean water tank, a water collecting tank and a filter, wherein the catalytic oxidation tank is filled with ozone catalysis particles in a fixed bed form, wherein the ozone catalysis particles are prepared from the following components in parts by weight: activated aluminium oxide particles, copper oxide, titanium dioxide, polyethylene glycol and polyvinyl alcohol; the post-biochemical BAF tank further comprises an anaerobic tank and an aerobiotic tank; a lower sieve plate and an upper sieve plate are arranged on the lower part and the upper part of the aerobiotic tank respectively; the lower sieve plate, the upper sieve plate and side walls of the aerobiotic tank define an aerobiotic chamber in which a plurality of aerobiotic biological fillers are placed; the aerobiotic biological fillers consist of an aerobiotic carrier and an aerobiotic microorganism film covering the surface of the aerobiotic carrier; a reflux window part is arranged at the upper part of an aeration barrel. The water treatment equipment disclosed by the invention is low in operating cost, simple in operation and stable to run and can achieve the purposes of efficiently degrading organic pollutants and realizing advanced treatment and up-to-standard discharge of waste water in the coal chemical industry.
Description
Technical field
The present invention relates to a kind of water treatment facilities for high concentrated organic wastewater qualified discharge, belong to organic wastewater technologyField.
Background technology
Domestic coal-producing gasification factory mostly adopts the strange gas-made technology in Shandong, and the Wastewater Pollutant that this technique produces is dense,Organic components complexity, mainly contains phenolic compound, polycyclc aromatic compound, heterocyclic compound and the fat of nitrogenous, oxygen, sulphurClass chemical combination, toxicity is large, difficult for biological degradation. If coal gas wastewater will be made ecological environment without dealing carefully with discharge beyond standardsBecome serious pollution, therefore how effectively to administer coal gas wastewater, realizing discharged wastewater met the national standard becomes an international difficult problem.
At present, the ammonia nitrogen of high concentration and phenol are the Focal point and difficult points of coal gasification waste water water treatment, and coal gasification waste water is through pre-After processing and biochemical treatment, ammonia nitrogen and most of organic matter are effectively removed, and have but still contain certain difficult degradation in waste waterMachine thing and suspension, need to just can reach discharge and reuse requirement by advanced treating. The advanced treating skill of having applied both at home and abroadArt has advanced oxidation processes, absorption method, coagulant sedimentation and membrane separation technique, and above-mentioned wastewater processing technology is in outlet effect and operationOn cost, still there are a lot of problems. At present the research of coal gasification waste water treatment technology is rested on to the small-scale test stage mostly, largeSome scholars is all to carry out application study for monotechnics, and the coupling technique of materialization processing and biochemical treatment is studied veryFew.
Summary of the invention
The object of the invention is to provide a kind of water treatment facilities for high concentrated organic wastewater qualified discharge, and this is used for high denseThe water treatment facilities operating cost of degree organic wastewater qualified discharge is low, simple to operate, stable, and it is organic to obtain efficient degradationThe object of pollutant, can realize Coal Chemical Industry high concentrated organic wastewater advanced treating and qualified discharge under low cost.
For achieving the above object, the technical solution used in the present invention is: a kind of for high concentrated organic wastewater qualified dischargeWater treatment facilities, comprise catalytic oxidation pond, oxidation-stabilized pond, rear biochemical BAF pond, clear water reserviors, collecting-tank and filter, described inCatalytic oxidation pond, oxidation-stabilized pond, rear biochemical BAF pond are connected by transfer conduit successively with clear water reserviors, and described filter passes throughInlet channel is connected to inside, catalytic oxidation pond, and an ozone generator is connected to inside, catalytic oxidation pond, institute by gas pipelineState clear water reserviors and be provided with inlet opening, apopore and return port, transfer tube is passed through in the inlet opening of described clear water reserviors and rear biochemical BAF pondRoad connects, and the apopore of described clear water reserviors is connected to a backwashing pump one end, and this backwashing pump other end is connected to by reflux lineCatalytic oxidation pond, inside, rear biochemical BAF pond, described catalytic oxidation pond is filled with ozone catalytic particle with fixed bed form, described inCollecting-tank is positioned at the opposing side in catalytic oxidation pond and oxidation-stabilized pond, between this collecting-tank and filtering ponds, is disposed with liftingPump and filter;
Described rear biochemical BAF pond further comprises anaerobic pond, Aerobic Pond, and the top of described anaerobic pond and the bottom of Aerobic Pond are passed throughIntervalve connects, and the bottom of described anaerobic pond is connected with sewage water inlet pipe, and the top of described Aerobic Pond is connected with drainpipe;
Described anaerobic pond bottom, top are separately installed with lower supporting plate, upper backup pad, this lower supporting plate, upper backup pad and anaerobismPond sidewall forms anaerobism cavity, is placed with several anaerobic organism fillers in described anaerobism cavity, described anaerobic organism filler byAnaerobism carrier and extension are overlying on the anaerobe film composition of anaerobism carrier surface;
Described Aerobic Pond bottom, top are separately installed with lower sieve plate, upper sieve plate, this lower sieve plate, upper sieve plate and Aerobic Pond sidewall shapeBecome aerobic cavity, be placed with several aerobe fillers in described aerobic cavity, described aerobe filler is by the good carrier of oxygenThe aerobic microbiological film that is overlying on aerobic carrier surface with extension forms;
Described anaerobism carrier, the good carrier of oxygen include hollow short pipe, be successively arranged at one heart hollow short pipe outside first withThimble circle, the second concentric ring, be connected by connecting muscle between hollow short pipe and the first concentric ring, the second concentric ring, is positioned atThe outermost second concentric ring surface indentation;
Described Aerobic Pond is vertically provided with the aeration cylinder of sieve plate under an embedding, upper sieve plate centre, and an aeration head is positioned at aeration cylinderBottom, one is positioned at aeration cylinder and is connected to described aeration head, described aerobe filler position for transmitting the oxygen hose of oxygenBetween Aerobic Pond sidewall and aeration cylinder;
The top of described aeration cylinder is provided with back window portion, and this back window portion is positioned at upper sieve plate top, this back window portion side surfaceSeveral fenestras are uniformly distributed circumferentially;
Described ozone catalytic particle is made up of the component of following weight portion:
Particle diameter is 88.7 ~ 91.3 parts of the activated alumina particles of 2 ~ 4mm,
1.4 ~ 1.6 parts of cupric oxide,
0.8 ~ 1.2 part of titanium dioxide,
4 ~ 7 parts of polyethylene glycol,
1.9 ~ 2.1 parts of polyvinyl alcohol;
88.7 ~ 91.3 parts of the activated alumina particles that is 2 ~ 4mm by described particle diameter and 1.4 ~ 1.6 parts of cupric oxide, titanium dioxide 0.81.9 ~ 2.1 parts of ~ 1.2 parts, 4 ~ 7 parts of polyethylene glycol, polyvinyl alcohol mix in stirring mixer, make even mixed oxidation1.9 ~ 2.1 parts of 1.4 ~ 1.6 parts of copper, 0.8 ~ 1.2 part of titanium dioxide, 4 ~ 7 parts of polyethylene glycol, polyvinyl alcohol are covered in described active oxygenChange alumina particles surface and form catalyst mother bulb; Again catalyst mother bulb is dried successively, roasting obtains described ozone catalyticGrain.
In technique scheme, further improved technical scheme is as follows:
As preferably, described catalytic oxidation is provided with a dividing plate in pond vertically, thereby catalytic oxidation pond is divided into left and rightChamber, described catalytic oxidation pond lower horizontal is provided with a sieve plate, and the lower end of this dividing plate is installed to the upper surface of sieve plate, described ozoneCatalysed particulate is positioned at sieve plate top and is positioned at dividing plate both sides.
As preferably, described ozone generator is connected to the bottom in catalytic oxidation pond by gas pipeline.
As preferably, described being dried under 100 ~ 120 DEG C of conditions keeps 4 ~ 6 hours.
As preferably, described roasting is incubated 7 ~ 9 hours under 350 ~ 520 DEG C of conditions.
Because technique scheme is used, the present invention compared with prior art has following advantages and effect:
1, the present invention is for the water treatment facilities of high concentrated organic wastewater qualified discharge, and its catalytic ozonation technology is compared otherChemical oxidization method, reaction rate is rapid, produces the hydroxyl radical free radical of a large amount of active non-selectivities, the multiple dirt in oxidized waste waterDye thing, improve the biodegradability of waste water, oxidation water outlet enters interior circulation BAF, filtration, bioflocculation and biological suction of biological bedUnder attached effect, the materials such as the organic matter containing in waste water are further adsorbed oxidation, and the method effectively becomes in conjunction with biochemical treatmentThis cheap and efficient advantage of advanced oxidation efficiency, has improved the feasibility of the dense water depth processing of RO; Secondly, improved coalificationThe tolerance of work high concentrated organic wastewater, makes at the catalytic oxidation treatment process to organic wastewater, catalyst ozoneProduce active hydroxyl radical free radical, removal, decolouring, de-stench, degraded toxic pollutant and the raising waste water to waste water CODBiodegradability keeps good effect.
2, the present invention is for the water treatment facilities of high concentrated organic wastewater qualified discharge, and its salt tolerant class physical capacity is strong, canBe not more than in the waste water of 8000mg/L and normally use at TDS, catalyst activity is high, and cost is low, and preparation method is simple, therefore rightExtensive use tool in catalytic ozonation technology in Coal Chemical Industry high concentrated organic wastewater advanced treating is of great significance.
3. the novel anaerobic-aerobic of the present invention biofilter combined denitrification device, it,, by preposition anaerobic filter, can keepHigh BOD5/ TN ratio, for denitrifying bacterium provides sufficient carbon source, ensures carrying out smoothly of denitrification denitrogenation; And aerobic section adoptsInner circulating aerating biological filtering tank, by regulating aeration rate, realizes synchronous nitration and denitrification effect, reduces returning of nitrification liquid simultaneouslyStream, saves engineering operation expense, and ensures the BOD that anaerobic filter is higher5/ TN ratio, improves the removal effect to total nitrogen jointly.
Brief description of the drawings
Accompanying drawing 1 is for the present invention is for the water treatment facilities structural representation of high concentrated organic wastewater qualified discharge;
Accompanying drawing 2 is rear biochemical BAF pool structure schematic diagram of the present invention;
Accompanying drawing 3 is biologic packing material structural representation of the present invention;
Accompanying drawing 4 is the partial structurtes schematic diagram of accompanying drawing 1.
In above accompanying drawing: 1, catalytic oxidation pond; 2, oxidation-stabilized pond; 3, rear biochemical BAF pond; 4, clear water reserviors; 41, water inletHole; 42, apopore; 5, transfer conduit; 6, elevator pump; 7, inlet channel; 8, ozone generator; 9, gas pipeline; 10, return ductRoad; 11, backwashing pump; 12, ozone catalytic particle; 13, dividing plate; 14, sieve plate; 15, collecting-tank; 16, filter; 31, anaerobic pond;32, Aerobic Pond; 33, intervalve; 34, sewage water inlet pipe; 35, drainpipe; 36, lower supporting plate; 37, upper backup pad; 38, anaerobic cavityBody; 39, anaerobic organism filler; 40, anaerobism carrier; 101, hollow short pipe; 102, the first concentric ring; 103, the second concentric ringCircle; 104, connect muscle; 41, lower sieve plate; 42, upper sieve plate; 43, aerobic cavity; 44, aerobe filler; 45, the good carrier of oxygen; 46, expose to the sunInflator; 47, aeration head; 48, oxygen hose; 49, back window portion; 50, fenestra.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described:
Embodiment 1 ~ 4: a kind of water treatment facilities for high concentrated organic wastewater qualified discharge, comprise catalytic oxidation pond 1, oxidationStabilization pond 2, rear biochemical BAF pond 3, clear water reserviors 4, collecting-tank 15 and filter 16, described catalytic oxidation pond 1, oxidation-stabilized pond 2,Rear biochemical BAF pond 3 is connected by transfer conduit 5 successively with clear water reserviors 4, and described filter 16 is connected to and is urged by inlet channel 7Change oxidation pond 1 inside, an ozone generator 8 is connected to 1 inside, catalytic oxidation pond by gas pipeline 9, and described clear water reserviors 4 arrangeHave inlet opening 41, apopore 42, the inlet opening 41 of described clear water reserviors 4 is connected by transfer conduit 5 with rear biochemical BAF pond 3, described inThe apopore 42 of clear water reserviors 4 is connected to backwashing pump 11 one end, and these backwashing pump 11 other ends are connected to and are urged by reflux line 10Change oxidation pond 1,3 inside, rear biochemical BAF pond, described catalytic oxidation pond 1 is filled with ozone catalytic particle 12 with fixed bed form, instituteState collecting-tank 15 and be positioned at the opposing side in catalytic oxidation pond 1 and oxidation-stabilized pond 2, between this collecting-tank 15 and filtering ponds 16 successivelyBe provided with elevator pump 6 and filter 16;
Described rear biochemical BAF pond 3 further comprises anaerobic pond 31, Aerobic Pond 32, the top of described anaerobic pond 31 and Aerobic Pond 32Bottom connect by intervalve 33, the bottom of described anaerobic pond 31 is connected with sewage water inlet pipe 34, described Aerobic Pond 32 upperPortion is connected with drainpipe 35;
Described anaerobic pond 31 bottoms, top are separately installed with lower supporting plate 36, upper backup pad 37, this lower supporting plate 36, upper supportPlate 37 and anaerobic pond 31 sidewalls form anaerobism cavity 38, are placed with several anaerobic organism fillers 39 in described anaerobism cavity 38,The anaerobe film that described anaerobic organism filler 39 is overlying on anaerobism carrier 40 surfaces by anaerobism carrier 40 and extension forms;
Described Aerobic Pond 42 bottoms, top are separately installed with lower sieve plate 41, upper sieve plate 42, and this lower sieve plate 41, upper sieve plate 42 are become reconciledOxygen pond 32 sidewalls form aerobic cavity 43, in described aerobic cavity 43, are placed with several aerobe fillers 44, described aerobicThe aerobic microbiological film that biologic packing material 44 has been overlying on the carrier of oxygen 45 surfaces by the good carrier of oxygen 45 and extension forms;
Described anaerobism carrier 40, the good carrier of oxygen 45 include hollow short pipe 101, are arranged at one heart outside hollow short pipe 101 successivelyThe first concentric ring 102 of side, the second concentric ring 103, hollow short pipe 101 and the first concentric ring 102, the second concentric ringBetween 103, connect by connecting muscle 104, be positioned at the surperficial indentation of the outermost second concentric ring 103;
Described Aerobic Pond 32 is vertically provided with aeration cylinder 46, one aeration heads 47 of sieve plate 41 under an embedding, upper sieve plate 42 centreBe positioned at aeration cylinder 46 bottoms, one is positioned at aeration cylinder 46 and is connected to described aeration head 47 for transmitting the oxygen hose 48 of oxygen,Described aerobe filler 44 is between Aerobic Pond 32 sidewalls and aeration cylinder 46;
The top of described aeration cylinder 46 is provided with back window portion 49, and this back window portion 49 is positioned at upper sieve plate 42 tops, this back windowPortion's 49 side surfaces have been uniformly distributed circumferentially several fenestras 50;
Described ozone catalytic particle 12 is made up of the component of following weight portion, as shown in table 1:
Table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | |
| Activated alumina particle | 90 parts | 89.5 parts | 89 parts | 91 parts |
| Cupric oxide | 1.55 part | 1.4 part | 1.6 part | 1.5 part |
| Titanium dioxide | 1.2 part | 0.85 part | 0.95 part | 1.1 part |
| Polyethylene glycol | 5.5 part | 4.8 part | 6 parts | 6.5 part |
| Polyvinyl alcohol | 2 parts | 1.9 part | 1.95 part | 2.1 part |
Described activated alumina particle particle diameter is 2 ~ 4mm;
88.7 ~ 91.3 parts of the activated alumina particles that is 2 ~ 4mm by described particle diameter and 1.4 ~ 1.6 parts of cupric oxide, titanium dioxide 0.81.9 ~ 2.1 parts of ~ 1.2 parts, 4 ~ 7 parts of polyethylene glycol, polyvinyl alcohol mix in stirring mixer, make even mixed oxidation1.9 ~ 2.1 parts of 1.4 ~ 1.6 parts of copper, 0.8 ~ 1.2 part of titanium dioxide, 4 ~ 7 parts of polyethylene glycol, polyvinyl alcohol are covered in described active oxygenChange alumina particles surface and form catalyst mother bulb; Again catalyst mother bulb is dried successively, roasting obtains described ozone catalyticGrain 12.
In above-mentioned catalytic oxidation pond 1, be provided with vertically a dividing plate 13, thereby catalytic oxidation pond be divided into left and right chamber,Described catalytic oxidation pond 1 lower horizontal is provided with a sieve plate 14, and the lower end of this dividing plate 13 is installed to the upper surface of sieve plate 14, described inOzone catalytic particle 12 is positioned at sieve plate 14 tops and is positioned at dividing plate 13 both sides.
Above-mentioned ozone generator 8 is connected to the bottom in catalytic oxidation pond by gas pipeline 9.
Above-mentioned being dried under 100 ~ 120 DEG C of conditions keeps 4 ~ 6 hours.
Above-mentioned roasting is incubated 7 ~ 9 hours under 350 ~ 520 DEG C of conditions
The preparation method of the ozone catalytic particle 12 of above-described embodiment, comprises the following steps:
Step 1,88.7 ~ 91.3 parts of activated aluminas are cleaned for several times to remove its surperficial impurity with distilled water, and dryTo quality constant weight, the particle diameter of described activated alumina is 2 ~ 4mm;
Step 2,88.7 ~ 91.3 parts of activated aluminas and 1.4 ~ 1.6 parts of cupric oxide, titanium dioxide 0.8 that step 1 is obtained1.9 ~ 2.1 parts of ~ 1.2 parts, 4 ~ 7 parts of polyethylene glycol, polyvinyl alcohol mix in stirring mixer, make even mixed oxidation1.9 ~ 2.1 parts of 1.4 ~ 1.6 parts of copper, 0.8 ~ 1.2 part of titanium dioxide, 4 ~ 7 parts of polyethylene glycol, polyvinyl alcohol are covered in described active oxygenChange alumina particles surface and form catalyst mother bulb;
Step 3, from stirring mixer, take out described catalyst mother bulb, after at room temperature drying, put into baking oven, 100～The dried catalyst mother bulb of dry acquisition under 120 DEG C of conditions;
Step 4, dried catalyst mother bulb is put into Muffle furnace, under 350 ~ 520 DEG C of conditions, to obtain resistance to high salt smelly in roastingVPO catalysts.
In above-mentioned steps three, under 100 ~ 120 DEG C of conditions, be 5 hours drying time, in above-mentioned steps four at 350 ~ 520 DEG CUnder condition, roasting time is 8 hours.
Ozone catalytic particulate catalytic effect assessment of the present invention, experimental technique and data are in table 2:
Dynamically, in continuous flow ozone catalyzed oxidation test, catalyst amounts is 1.5L, and ozone dosage 100mg/L, waterpower are stoppedStay time 1h, in experiment, utilize gas flowmeter control ozone dosage, intake continuously by peristaltic pump. Moving 3 cycles urgesChange after effect stability, repeatedly sampling and measuring COD, averages.
Experiment condition: dynamically Continuous Flow operational mode, ozone dosage 100mg/L, HRT=1h.
Water inlet source: the dense water of certain RO of factory, the about 350mg/L of COD, TDS is 3500mg/L.
From table 2, data are known, with respect to Zhonghai Asphalt's conventional aluminium oxide ozone catalytic agent, resistance toThe dense water of high salt ozone catalytic agent catalytic oxidation RO, is 100mg/L at ozone dosage, and hydraulic detention time is 1h service conditionUnder, COD clearance is up to 34.2%, and ozone efficiency is 1.1, is far superior to conventional ozone catalytic agent.
The present embodiment is for the water treatment facilities of high concentrated organic wastewater qualified discharge, and concrete implementation step is as follows:
(1), high saline sewage after pretreatment promotes and enters filter through pump;
(2), filter water outlet gravity flow enters catalytic ozonation pond, adds ozone in catalytic ozonation pond simultaneously, carry outCatalytic ozonation reaction;
(3), water outlet gravity flow in catalytic ozonation unit enters oxidation-stabilized pond;
(4), oxidation-stabilized pond water outlet gravity flow enters rear biochemical BAF unit, carries out biochemical reaction;
(5), water outlet gravity flow in rear biochemical BAF unit enters clear water reserviors, qualified discharge;
Wherein, step (1) middle filtrator water outlet indicator of suspended solids is controlled in 20mg/L;
Every liter of sewage ozone dosage 50mg in step (2), the ozonized air concentration that adds is 80 ~ 120mgO3/L gas, ozoneThe apparent time of staying of catalytic oxidation (HRT) is 1.5h, and in catalytic ozonation pond, catalyst exists with the form of fixed bed.
For above-mentioned the problems of the prior art deficiency, the present invention proposes that treatment effect is good, stable, operating costLow, not produce secondary pollution Coal Chemical Industry high concentrated organic wastewater deep treatment method. Adopt catalytic ozonation in conjunction with rear lifeChange BAF technique, biological oxidation unit has adopted interior circulation BAF technology, and catalytic ozonation technical matters is simple, easy to operate,Can accomplish the end in view by gas flowmeter flexibly changing ozone amount according to influent quality situation; Interior circulation BAF technology energyEnough maintaining in poor auxotype sewage compared with high biomass and biologically active keeps biochemical ability. Have in order to ensure the two functionEffect combination, at catalytic ozonation unit front end, increases more medium filter, removes suspension; And two processing units itBetween be provided with oxidation-stabilized pond, with guarantee advanced oxidation process thoroughly complete and prevent residual oxidant suppress after biochemical unitIn microbial activity, reach the object having complementary functions. Operating cost is low, simple to operate, stable, and obtains efficient degradationThe object of organic pollution, can realize Coal Chemical Industry high concentrated organic wastewater advanced treating and qualified discharge under low cost.
The present invention adopts ozone catalytic particle, and ozone catalytic is produced to hydroxyl radical free radical, reduces hydroxyl radical free radical oxygen simultaneouslyChange the activation energy of reaction, make the organic matter part modification of difficult degradation in high saline sewage, become by large molecule biorefractory organicBecome the easy biochemical organic matter of little molecule, a part directly mineralising is removed, or direct oxidation is decomposed into H2O and CO2.
The inventive method first enters collecting-tank by pretreated high saline sewage, promotes and enters filter through pump, filtersDevice water outlet indicator of suspended solids is less than 20mg/L, and object is the suspension of removing in Coal Chemical Industry high concentrated organic wastewater, thereby reducesThe oxidation load in catalytic ozonation pond and the dirt of ozone catalytic agent are stifled; Filter water outlet gravity flow enters and is filled with metal ionThe catalytic ozonation pond of catalyst adds 50mgO simultaneously3The ozonized air of/L water, under the effect of catalyst, high oxidationProperty ozone change the stronger and optionally hydroxyl radical free radical of non-oxidation of oxidisability into, reduced hydroxyl radical free radical oxidation anti-simultaneouslyThe activation energy of answering, hydroxyl radical free radical is by remaining hardly degraded organic substance part modification in high saline sewage, difficult raw by large moleculeChange organic matter and become the easy biochemical organic matter of little molecule, a part directly mineralising is decomposed, or direct oxidation is H2O and CO2; Ozone oxygenDissolve water gravity flow and enter oxidation-stabilized pond, through the 1h time of staying, make water stabilization and excessive ozone is cleared up naturally; Oxidation is steadyDetermine pond water outlet gravity flow and enter rear biochemical BAF unit and carry out biochemical treatment, thereby reach the degree of depth of Coal Chemical Industry high concentrated organic wastewaterProcessing intent.
The present embodiment is for the water treatment facilities of high concentrated organic wastewater qualified discharge, and comprehensive treatment effect is as shown in table 3:
The water analysis data of table 3 embodiment
As table 3 instance data is learnt, the present invention has height to organic matter in Coal Chemical Industry high concentrated organic wastewater advanced treatment of waste waterEffect property. Wherein, catalytic ozonation carries out catalysis by ion load type catalyst to ozone and produces hydroxyl radical free radical, and difficulty is fallenSeparate organic matter and carry out advanced oxidation, COD clearance average out to 38%; Rear biochemical system utilizes microorganism to enter organic matter in sewageRow oxidation Decomposition, COD clearance is 32%; COBR advanced treatment system is 59.4% to total clearance of COD. In sum,COBR has feasibility to Coal Chemical Industry high concentrated organic wastewater advanced treatment system qualified discharge.
Above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the artScholar can understand content of the present invention and implement according to this, can not limit the scope of the invention with this. All according to the present inventionThe equivalence that Spirit Essence is done changes or modifies, within all should being encompassed in protection scope of the present invention.
Claims (5)
1. for water treatment facilities for high concentrated organic wastewater qualified discharge, it is characterized in that: comprise catalytic oxidation pond(1), oxidation-stabilized pond (2), rear biochemical BAF pond (3), clear water reserviors (4), collecting-tank (15) and filter (16), described Catalytic OxygenChange pond (1), oxidation-stabilized pond (2), rear biochemical BAF pond (3) are connected by transfer conduit (5) successively with clear water reserviors (4), described mistakeFilter (16) is connected to inside, catalytic oxidation pond (1) by inlet channel (7), and an ozone generator (8) is by gas pipeline (9)Be connected to inside, catalytic oxidation pond (1), described clear water reserviors (4) are provided with inlet opening (41), apopore (42), described clear water reserviors(4) inlet opening (41) is connected by transfer conduit (5) with rear biochemical BAF pond (3), the apopore (42) of described clear water reserviors (4)Be connected to a backwashing pump (11) one end, this backwashing pump (11) other end by reflux line (10) be connected to catalytic oxidation pond (1),Inside, rear biochemical BAF pond (3), described catalytic oxidation pond (1) is filled with ozone catalytic particle (12), described collection with fixed bed formPond (15) is positioned at the opposing side in catalytic oxidation pond (1) and oxidation-stabilized pond (2), this collecting-tank (15) and filtering ponds (16) itBetween be disposed with elevator pump (6) and filter (16);
Described rear biochemical BAF pond (3) further comprises anaerobic pond (31), Aerobic Pond (32), the top of described anaerobic pond (31) withThe bottom of Aerobic Pond (32) connects by intervalve (33), and the bottom of described anaerobic pond (31) is connected with sewage water inlet pipe (34),The top of described Aerobic Pond (32) is connected with drainpipe (35);
Described anaerobic pond (31) bottom, top are separately installed with lower supporting plate (36), upper backup pad (37), this lower supporting plate(36), upper backup pad (37) and anaerobic pond (31) sidewall form anaerobism cavity (38), described anaerobism cavity (38) if in be placed withA dry anaerobic organism filler (39), described anaerobic organism filler (39) is overlying on anaerobism carrier (40) table by anaerobism carrier (40) and extensionThe anaerobe film composition of face;
Described Aerobic Pond (42) bottom, top are separately installed with lower sieve plate (41), upper sieve plate (42), this lower sieve plate (41), top sievePlate (42) and Aerobic Pond (32) sidewall form aerobic cavity (43), in described aerobic cavity (43), are placed with several aerobesFiller (44), described aerobe filler (44) has been overlying on aerobic micro-life on the carrier of oxygen (45) surface by the good carrier of oxygen (45) and extensionThing film composition;
Described anaerobism carrier (40), the good carrier of oxygen (45) include hollow short pipe (101), are arranged at one heart hollow short pipe successively(101) the first concentric ring (102), the second concentric ring (103) in outside, hollow short pipe (101) and the first concentric ring(102), connect by connecting muscle (104) between the second concentric ring (103), be positioned at the outermost second concentric ring (103) and showFace indentation;
Described Aerobic Pond (32) is vertically provided with the aeration cylinder (46) of sieve plate under an embedding (41), upper sieve plate (42) centre, oneAeration head (47) is positioned at aeration cylinder (46) bottom, and one is positioned at aeration cylinder (46) and connects for transmitting the oxygen hose (48) of oxygenTo described aeration head (47), described aerobe filler (44) is positioned between Aerobic Pond (32) sidewall and aeration cylinder (46);
The top of described aeration cylinder (46) is provided with back window portion (49), and this back window portion (49) is positioned at upper sieve plate (42) top,This back window portion (49) side surface has been uniformly distributed circumferentially several fenestras (50);
Described ozone catalytic particle (12) is made up of the component of following weight portion:
Particle diameter is 88.7 ~ 91.3 parts of the activated alumina particles of 2 ~ 4mm,
1.4 ~ 1.6 parts of cupric oxide,
0.8 ~ 1.2 part of titanium dioxide,
4 ~ 7 parts of polyethylene glycol,
1.9 ~ 2.1 parts of polyvinyl alcohol;
88.7 ~ 91.3 parts of the activated alumina particles that is 2 ~ 4mm by described particle diameter and 1.4 ~ 1.6 parts of cupric oxide, titanium dioxide 0.81.9 ~ 2.1 parts of ~ 1.2 parts, 4 ~ 7 parts of polyethylene glycol, polyvinyl alcohol mix in stirring mixer, make even mixed oxidation1.9 ~ 2.1 parts of 1.4 ~ 1.6 parts of copper, 0.8 ~ 1.2 part of titanium dioxide, 4 ~ 7 parts of polyethylene glycol, polyvinyl alcohol are covered in described active oxygenChange alumina particles surface and form catalyst mother bulb; Again catalyst mother bulb is dried successively, roasting obtains described ozone catalyticGrain (12).
2. the water treatment facilities for high concentrated organic wastewater qualified discharge according to claim 1, is characterized in that: instituteState and in catalytic oxidation pond (1), be provided with vertically a dividing plate (13), thereby catalytic oxidation pond is divided into left and right chamber, described in urgeChange oxidation pond (1) lower horizontal and be provided with a sieve plate (14), the lower end of this dividing plate (13) is installed to the upper surface of sieve plate (14), instituteStating ozone catalytic particle (12) is positioned at sieve plate (14) top and is positioned at dividing plate (13) both sides.
3. the water treatment facilities for high concentrated organic wastewater qualified discharge according to claim 1, is characterized in that: instituteState ozone generator (8) is connected to catalytic oxidation pond bottom by gas pipeline (9).
4. the water treatment facilities for high concentrated organic wastewater qualified discharge according to claim 1, is characterized in that: instituteState to be dried under 100 ~ 120 DEG C of conditions and keep 4 ~ 6 hours.
5. the water treatment facilities for high concentrated organic wastewater qualified discharge according to claim 1, is characterized in that: instituteState roasting and be incubated 7 ~ 9 hours under 350 ~ 520 DEG C of conditions.
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