CN105541013A - Efficient low-consumption ammonia nitrogen removal comprehensive water treatment device for coal chemical industry waste water - Google Patents
Efficient low-consumption ammonia nitrogen removal comprehensive water treatment device for coal chemical industry waste water 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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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—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
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic 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
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
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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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- 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
Abstract
The invention discloses an efficient low-consumption ammonia nitrogen removal comprehensive water treatment device for coal chemical industry waste water. The efficient low-consumption ammonia nitrogen removal comprehensive water treatment device comprises a catalytic oxidation tank, an oxidation stabilization tank, a post biochemistry BAF tank, a clean water tank, a water collecting tank and a filter, wherein the catalytic oxidation tank is filled with ozone catalytic particles in a form of fixed bed, the ozone catalytic particles are prepared from the following components in parts by weight: activated aluminum oxide particles, copper oxide, titanium dioxide, polyethylene glycol and polyvinyl alcohol; the post biochemistry BAF tank further comprises an anaerobic tank and an aerobiotic tank, an aerator is located at the bottom of an aeration cylinder, an oxygen pipe used for transmitting oxygen is located in the aeration cylinder and is connected to the aerator, and aerobic activated sludge particles and a second masson pine are located between the side wall of the aerobiotic tank and the aeration cylinder; the upper part of the aeration cylinder is provided with a backflow window part which is located above an upper sieve plate. The system provided by the invention is low in running cost, simple to operate, and stable in running, the aim of efficiently decomposing organic pollutants is obtained, and coal chemical industry waste water advanced treatment and discharge in compliance with the standards are realized.
Description
Technical field
The present invention relates to a kind of coal chemical industrial waste water efficient low-consume except ammonia nitrogen comprehensive water treatment device, belong to coal chemical industrial waste water technical field.
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, and organic components is complicated, mainly contain phenolic compound, polycyclc aromatic compound, the heterogeneous ring compound of nitrogenous, oxygen, sulphur and fats chemical combination, toxicity is large, difficult for biological degradation.If coal gas wastewater will cause serious pollution to ecotope without dealing carefully with discharge beyond standards, 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 density and phenol are the Focal point and difficult points of coal gasification waste water water treatment, coal gasification waste water is after pre-treatment and biochemical treatment, ammonia nitrogen and most of organism are effectively removed, but still containing certain hardly degraded organic substance and suspended substance in waste water, need just can reach discharge and reuse requirement by advanced treatment.The further treatment technique applied both at home and abroad has advanced oxidation processes, absorption method, coagulant sedimentation and membrane separation technique, and above-mentioned wastewater processing technology still exists a lot of problem on outlet effect and running cost.Mostly rest on the small-scale test stage to the research of coal gasification waste water treatment technology at present, most of scholar is carrying out applied research for monotechnics, studies seldom the coupling technique of materializing strategy and biochemical treatment.
Summary of the invention
The object of the invention is to provide a kind of coal chemical industrial waste water efficient low-consume except ammonia nitrogen comprehensive water treatment device, it is low, simple to operate, stable that this efficient low-consume removes ammonia nitrogen comprehensive water treatment device working cost, and obtain the object of efficient degradation organic pollutant, the coal chemical industrial waste water advanced treatment under low cost and qualified discharge can be realized.
For achieving the above object, the technical solution used in the present invention is: a kind of coal chemical industrial waste water efficient low-consume is except ammonia nitrogen comprehensive water treatment device, comprise catalyzed oxidation pond, oxidation-stabilized pond, rear biochemical BAF pond, clean water basin, water collecting basin and strainer, described catalyzed oxidation pond, oxidation-stabilized pond, rear biochemical BAF pond is connected by transfer conduit successively with clean water basin, it is inner that described strainer is connected to catalyzed oxidation pond by inlet channel, it is inner that one ozonizer is connected to catalyzed oxidation pond by gas pipeline, described clean water basin are provided with prosopyle, posticum and return port, the prosopyle of described clean water basin is connected by transfer conduit with rear biochemical BAF pond, the posticum of described clean water basin is connected to a backwashing pump one end, this backwashing pump the other end is connected to catalyzed oxidation pond by reflux line, rear biochemical BAF pond is inner, described catalyzed oxidation pond is filled with ozone catalytic particle with fixed bed form, described water collecting basin is positioned at the opposing side in catalyzed oxidation pond and oxidation-stabilized pond, lift pump and strainer is disposed with between these water collecting basin and filtering basin,
Described ozone catalytic particle is made up of the component of following weight part:
Particle diameter is the activated alumina particle 88.7 ~ 91.3 parts of 2 ~ 4mm,
Cupric oxide 1.4 ~ 1.6 parts,
Titanium dioxide 0.8 ~ 1.2 part,
Polyoxyethylene glycol 4 ~ 7 parts,
Polyvinyl alcohol 1.9 ~ 2.1 parts;
Be that the activated alumina particle 88.7 ~ 91.3 parts of 2 ~ 4mm mixes with cupric oxide 1.4 ~ 1.6 parts, titanium dioxide 0.8 ~ 1.2 part, polyoxyethylene glycol 4 ~ 7 parts, polyvinyl alcohol 1.9 ~ 2.1 parts in stirring mixer by described particle diameter, make the cupric oxide after Homogeneous phase mixing 1.4 ~ 1.6 parts, titanium dioxide 0.8 ~ 1.2 part, polyoxyethylene glycol 4 ~ 7 parts, polyvinyl alcohol 1.9 ~ 2.1 parts be covered in described activated alumina particle surface and form catalyzer mother bulb; Again catalyzer mother bulb is carried out drying successively, roasting obtains described ozone catalytic particle;
Described rear biochemical BAF pond comprises anaerobic pond, Aerobic Pond further, and the top of described anaerobic pond is connected by intervalve with the bottom of Aerobic Pond, and the bottom of described anaerobic pond is connected with sewage water inlet pipe, and the top of described Aerobic Pond is connected with water shoot;
Described anaerobic pond bottom, top are separately installed with lower supporting plate, upper backup pad, this lower supporting plate, upper backup pad and anaerobic pond sidewall form anaerobism cavity, be placed with several anaerobic activated sludge particles and some first Pinus massoniana Lamb as filler in described anaerobism cavity, in several anaerobic activated sludge particles described, part anaerobic activated sludge particle is positioned at the first Pinus massoniana Lamb on the 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 form aerobic cavity, be placed with several aerobic activated sludge particles and some second Pinus massoniana Lamb as filler in described aerobic cavity, in several aerobic activated sludge particles described, part aerobic activated sludge particle is positioned at the second Pinus massoniana Lamb on the surface;
Described Aerobic Pond is vertically provided with the aeration cylinder of sieve plate under an embedding, upper sieve plate centre, one aeration head is positioned at bottom aeration cylinder, one is positioned at aeration cylinder for the oxygen hose transmitting oxygen and is connected to described aeration head, and described aerobic activated sludge particle and the second Pinus massoniana Lamb are between 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 above upper sieve plate, and this back window portion side surface has been uniformly distributed circumferentially several fenestras.
The technical scheme improved further in technique scheme is as follows:
As preferably, a dividing plate is provided with vertically in described catalyzed oxidation pond, thus catalyzed oxidation pond is divided into left and right chamber, described catalyzed oxidation pond lower horizontal is provided with a sieve plate, the lower end of this dividing plate is installed to the upper surface of sieve plate, and described ozone catalytic particle to be positioned at above sieve plate and to be positioned at dividing plate both sides.
As preferably, described ozonizer is connected to the bottom in catalyzed oxidation pond by gas pipeline.
As preferably, described drying keeps 4 ~ 6 hours under 100 ~ 120 DEG C of conditions.
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, coal chemical industrial waste water efficient low-consume of the present invention is except ammonia nitrogen comprehensive water treatment device, its catalytic ozonation technology compares other chemical oxidization methods, speed of reaction is rapid, produce the hydroxyl radical free radical of non-selectivity active in a large number, multiple pollutant in oxidized waste water, improve the biodegradability of waste water, oxidation water outlet enters internal recycle BAF, in the filtration of biological bed, under biofloculation and biological adsorption effect, the materials such as the organism contained in waste water are by further by adsorption and oxidation, the advantage of effectively with low cost in conjunction with biochemical treatment and the advanced oxidation high efficiency of the method, improve the feasibility of coal chemical industrial waste water advanced treatment, secondly, improve the tolerance to coal chemical industrial waste water, make in the catalytic oxidation treatment process to coal chemical industrial waste water, the hydroxyl radical free radical that catalyst ozone generation is active, keeps good effect to the removal of waste water COD, decolouring, de-stench, degraded toxic pollutant and the biodegradability that improves waste water.
2, coal chemical industrial waste water efficient low-consume of the present invention is except ammonia nitrogen comprehensive water treatment device, its physical capacity of resistance to salt is strong, can be not more than in the waste water of 8000mg/L at TDS and normally use, catalyst activity is high, cost is low, and preparation method is simple, is therefore of great significance for the widespread use tool of catalytic ozonation technology in coal chemical industrial waste water advanced treatment.
3, coal chemical industrial waste water efficient low-consume of the present invention is except ammonia nitrogen comprehensive water treatment device, it increases internal recycle can significantly improve O pond synchronous nitration and denitrification efficiency, thus the removal effect that improve TN, also assures that the double oxygen environment in A pond carbon source abundance and A pond simultaneously, A pond denitrifying bacteria is played a role efficiently, the low total nitrogen of further raising, the total clearance of total nitrogen is about more than 92%; Secondly, it adopts Pinus massoniana Lamb elastic filler: 3 D elastic filler has screened several corrosion resistants in polyolefins and polymeric amide, high temperature resistant, ageing-resistant fine quality, be mixed with the auxiliary agents such as hydrophilic, absorption, heat resistanceheat resistant oxygen, adopt special wire drawing, strand hair technique, strand is interted solid at corrosion resistant, on the axial cord of high strength, make strand spatially evenly distributed radiation regimes, filler evenly can be unfolded and is abound with by stereoscopic and omnibearing in effective area, and surface-area is large, and biofilm is rapid, and adhesion not conglomeration, make gas, water, microbial film obtain fully mixed oozing and contact exchange; Secondly, by Pinus massoniana Lamb biofilm, the working cost that the specific denitrifying bacteria in A pond and O pond and nitrifier save sludge reflux in traditional A/O technique can be turned out.
Accompanying drawing explanation
Accompanying drawing 1 is for coal chemical industrial waste water efficient low-consume of the present invention is except ammonia nitrogen comprehensive water treatment device structural representation;
Accompanying drawing 2 is biochemical BAF pool structure schematic diagram rear in the present invention;
Accompanying drawing 3 is the local structure schematic diagram of accompanying drawing 2.
In above accompanying drawing: 1, catalyzed oxidation pond; 2, oxidation-stabilized pond; 3, rear biochemical BAF pond; 4, clean water basin; 41, prosopyle; 42, posticum; 5, transfer conduit; 6, lift pump; 7, inlet channel; 8, ozonizer; 9, gas pipeline; 10, reflux line; 11, backwashing pump; 12, ozone catalytic particle; 13, dividing plate; 14, sieve plate; 15, water collecting basin; 16, strainer; 31, anaerobic pond; 32, Aerobic Pond; 33, intervalve; 34, sewage water inlet pipe; 35, water shoot; 36, lower supporting plate; 37, upper backup pad; 38, anaerobism cavity; 39, anaerobic activated sludge particle; 40, the first Pinus massoniana Lamb; 41, lower sieve plate; 42, upper sieve plate; 43, aerobic cavity; 44, aerobic activated sludge particle; 45, the second Pinus massoniana Lamb; 46, aeration cylinder; 47, aeration head; 48, oxygen hose; 49, back window portion; 50, fenestra.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
Embodiment 1 ~ 4: a kind of coal chemical industrial waste water efficient low-consume is except ammonia nitrogen comprehensive water treatment device, comprise catalyzed oxidation pond 1, oxidation-stabilized pond 2, rear biochemical BAF pond 3, clean water basin 4, water collecting basin 15 and strainer 16, described catalyzed oxidation pond 1, oxidation-stabilized pond 2, rear biochemical BAF pond 3 is connected by transfer conduit 5 successively with clean water basin 4, it is inner that described strainer 16 is connected to catalyzed oxidation pond 1 by inlet channel 7, it is inner that one ozonizer 8 is connected to catalyzed oxidation pond 1 by gas pipeline 9, described clean water basin 4 are provided with prosopyle 41, posticum 42, the prosopyle 41 of described clean water basin 4 is connected by transfer conduit 5 with rear biochemical BAF pond 3, the posticum 42 of described clean water basin 4 is connected to backwashing pump 11 one end, this backwashing pump 11 the other end is connected to catalyzed oxidation pond 1 by reflux line 10, rear biochemical BAF pond 3 is inner, described catalyzed oxidation pond 1 is filled with ozone catalytic particle 12 with fixed bed form, described water collecting basin 15 is positioned at the side opposing with oxidation-stabilized pond 2, catalyzed oxidation pond 1, lift pump 6 and strainer 16 is disposed with between these water collecting basin 15 and filtering basin 16,
Described rear biochemical BAF pond 3 comprises anaerobic pond 31, Aerobic Pond 32 further, the top of described anaerobic pond 31 is connected by intervalve 33 with the bottom of Aerobic Pond 32, the bottom of described anaerobic pond 31 is connected with sewage water inlet pipe 34, and the top of described Aerobic Pond 32 is connected with water shoot 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, be placed with several anaerobic activated sludge particles 39 and some first Pinus massoniana Lamb 40 as filler in described anaerobism cavity 38, in several anaerobic activated sludge particles 39 described, part anaerobic activated sludge particle 39 is positioned at the first Pinus massoniana Lamb 40 on the surface;
Described Aerobic Pond 32 bottom, top are separately installed with lower sieve plate 41, upper sieve plate 42, this lower sieve plate 41, upper sieve plate 42 and Aerobic Pond 32 sidewall form aerobic cavity 43, be placed with several aerobic activated sludge particles 44 and some second Pinus massoniana Lamb 45 as filler in described aerobic cavity 43, in several aerobic activated sludge particles 44 described, part aerobic activated sludge particle 44 is positioned at the second Pinus massoniana Lamb 45 on the surface;
Described Aerobic Pond 32 is vertically provided with the aeration cylinder 46 of sieve plate 41 under an embedding, upper sieve plate 42 centre, one aeration head 47 is positioned at bottom aeration cylinder 46, one is positioned at aeration cylinder 46 for the oxygen hose 48 transmitting oxygen and is connected to described aeration head 47, and described aerobic activated sludge particle 44 and the second Pinus massoniana Lamb 45 are 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 above upper sieve plate 42, and 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 part, 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 |
| Polyoxyethylene 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;
Be that the activated alumina particle 88.7 ~ 91.3 parts of 2 ~ 4mm mixes with cupric oxide 1.4 ~ 1.6 parts, titanium dioxide 0.8 ~ 1.2 part, polyoxyethylene glycol 4 ~ 7 parts, polyvinyl alcohol 1.9 ~ 2.1 parts in stirring mixer by described particle diameter, make the cupric oxide after Homogeneous phase mixing 1.4 ~ 1.6 parts, titanium dioxide 0.8 ~ 1.2 part, polyoxyethylene glycol 4 ~ 7 parts, polyvinyl alcohol 1.9 ~ 2.1 parts be covered in described activated alumina particle surface and form catalyzer mother bulb; Again catalyzer mother bulb is carried out drying successively, roasting obtains described ozone catalytic particle 12.
A dividing plate 13 is provided with vertically in above-mentioned catalyzed oxidation pond 1, thus catalyzed oxidation pond is divided into left and right chamber, described catalyzed oxidation pond 1 lower horizontal is provided with a sieve plate 14, the lower end of this dividing plate 13 is installed to the upper surface of sieve plate 14, and described ozone catalytic particle 12 to be positioned at above sieve plate 14 and to be positioned at dividing plate 13 both sides.
Above-mentioned ozonizer 8 is connected to the bottom in catalyzed oxidation pond by gas pipeline 9.
Above-mentioned drying keeps 4 ~ 6 hours under 100 ~ 120 DEG C of conditions.
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 one, by 88.7 ~ 91.3 parts of activated aluminas with distilled water cleaning for several times to remove the impurity on its surface, and be dried to quality constant weight, the particle diameter of described activated alumina is 2 ~ 4mm;
Step 2,88.7 ~ 91.3 parts of activated aluminas step one obtained mix in stirring mixer with cupric oxide 1.4 ~ 1.6 parts, titanium dioxide 0.8 ~ 1.2 part, polyoxyethylene glycol 4 ~ 7 parts, polyvinyl alcohol 1.9 ~ 2.1 parts, make the cupric oxide after Homogeneous phase mixing 1.4 ~ 1.6 parts, titanium dioxide 0.8 ~ 1.2 part, polyoxyethylene glycol 4 ~ 7 parts, polyvinyl alcohol 1.9 ~ 2.1 parts be covered in described activated alumina particle surface and form catalyzer mother bulb;
Step 3, from stirring mixer, take out described catalyzer mother bulb, after at room temperature drying, put into baking oven, dryly under 100 ~ 120 DEG C of conditions obtain dried catalyzer mother bulb;
Step 4, dried catalyzer mother bulb is put into retort furnace, under 350 ~ 520 DEG C of conditions, roasting obtains resistance to high salt ozone catalyst.
In above-mentioned steps three, under 100 ~ 120 DEG C of conditions, time of drying is 5 hours, and in above-mentioned steps four, under 350 ~ 520 DEG C of conditions, roasting time is 8 hours.
Ozone catalytic particulate catalytic effect assessment of the present invention, experimental technique and data are in table 2:
In the test of dynamic continuous flow catalytic ozonation, catalyst amounts is 1.5L, ozone dosage 100mg/L, hydraulic detention time 1h, utilizes gas meter to control ozone dosage, by peristaltic pump continuum micromeehanics in experiment.After running 3 cycle catalytic effect stabilities, repeatedly sampling and measuring COD, averages.
Experiment condition: dynamic continuous flow operational mode, ozone dosage 100mg/L, HRT=1h.
Water inlet source: the dense water of certain factory RO, COD is about 350mg/L, and TDS is 3500mg/L.
From table 2, data are known, relative to Zhonghai Asphalt's conventional alumina ozone catalyst, the dense water of resistance to high salt ozone catalyst catalyzed oxidation RO, be 100mg/L at ozone dosage, hydraulic detention time is under 1h operational conditions, COD clearance is up to 34.2%, and ozone efficiency is 1.1, is far superior to conventional ozone catalyst.
The present embodiment coal chemical industrial waste water is with efficient low-consume except ammonia nitrogen comprehensive water treatment device, and concrete implementation step is as follows:
(1), coal chemical industrial waste water after pretreatment promotes through pump and enters strainer;
(2), strainer water outlet gravity flow enters catalytic ozonation pond, simultaneously in catalytic ozonation pond, adds ozone, carries out catalytic ozonation reaction;
(3), ozone catalytic oxidation unit water outlet gravity flow enters oxidation-stabilized pond;
(4), the water outlet of oxidation-stabilized pond gravity flow enter rear biochemical BAF unit, carry out biochemical reaction;
(5), rear biochemical BAF unit water outlet gravity flow enters clean water basin, qualified discharge;
Wherein, step (1) middle filtrator water outlet indicator of suspended solids controls within 20mg/L;
Often liter of sewage ozone dosage 50mg in step (2), the ozonized air concentration that adds is 80 ~ 120mgO3/L gas, and the catalytic ozonation apparent residence time (HRT) is 1.5h, and in catalytic ozonation pond, catalyzer exists as a fixed bed.
Not enough for above-mentioned the problems of the prior art, the present invention proposes that treatment effect is good, stable, working cost is low, do not produce the petrochemical complex height saline sewage deep treatment method of secondary pollution.Biochemical BAF technique after adopting catalytic ozonation to combine, bio-oxidation unit have employed internal recycle BAF technology, catalytic ozonation technical matters is simple, easy to operate, can be accomplished the end in view according to influent quality situation by gas meter flexibly changing ozone amount; Internal recycle BAF technology can maintain higher biomass and biological activity and keep biochemical ability in poor nutritional type sewage.In order to ensure the two function efficient combination, in ozone catalytic oxidation unit front end, increase more medium filter, remove suspended substance; And oxidation-stabilized pond is provided with between two processing units, to guarantee thoroughly completing and preventing the microorganism active in the rear biochemical unit of remaining oxidizing agent suppression of advanced oxidation processes, reach the object had complementary functions.Working cost is low, simple to operate, stable, and obtains the object of efficient degradation organic pollutant, can realize the petroleum chemical industry height saline sewage advanced treatment under low cost and qualified discharge.
The present invention adopts ozone catalytic particle, ozone catalytic is produced hydroxyl radical free radical, reduce the activation energy of hydroxyl radical free radical oxidizing reaction simultaneously, make the organism part modification of difficult degradation in high saline sewage, the easy biochemical organism of small molecules is become by macromole biorefractory organic, a part directly mineralising is removed, or direct oxidation is decomposed into H2O and CO2.
Pretreated coal chemical industrial waste water is first entered water collecting basin by the inventive method, promote through pump and enter strainer, strainer water outlet indicator of suspended solids is less than 20mg/L, object removes the suspended substance in coal chemical industrial waste water, thus the dirt of the oxidation load and ozone catalyst that reduce catalytic ozonation pond is blocked up; Strainer water outlet gravity flow enters the catalytic ozonation pond being filled with metal ion catalyst, adds 50mgO simultaneously
3the ozonized air of/L water, under the effect of catalyzer, the ozone of high oxidative changes the stronger and non-oxidation optionally hydroxyl radical free radical of oxidisability into, reduce the activation energy of hydroxyl radical free radical oxidizing reaction simultaneously, hydroxyl radical free radical is by remaining hardly degraded organic substance part modification in coal chemical industrial waste water, become the easy biochemical organism of small molecules by macromole biorefractory organic, a part directly mineralising is decomposed, or direct oxidation is H
2o and CO
2; Ozone oxidation water outlet gravity flow enters oxidation-stabilized pond, through the 1h residence time, makes water conditioning and is naturally cleared up by excessive ozone; The water outlet gravity flow of oxidation-stabilized pond enters rear biochemical BAF unit and carries out biochemical treatment, thus reaches the advanced treatment object of high saline sewage.
The present embodiment coal chemical industrial waste water is with efficient low-consume except ammonia nitrogen comprehensive water treatment device, and comprehensive treatment effect is as shown in table 3:
The water quality analysis data of table 3 embodiment
As table 3 instance data is learnt, the present invention has high efficiency to organism in petrochemical complex height saline sewage advanced treatment of waste water.Wherein, catalytic ozonation carries out catalysis by ion load type catalyzer to ozone and produces hydroxyl radical free radical, carries out advanced oxidation, COD clearance average out to 38% to hardly degraded organic substance; Rear biochemical system utilizes microorganism to carry out oxygenolysis to dirty Organic substance in water, and COD clearance is 32%; COBR advanced treatment system is 59.4% to the total removal rate of COD.In sum, COBR has feasibility to coal chemical industrial waste water advanced treatment system qualified discharge.
Above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to spirit of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (5)
1. a coal chemical industrial waste water efficient low-consume removes ammonia nitrogen comprehensive water treatment device, it is characterized in that: comprise catalyzed oxidation pond (1), oxidation-stabilized pond (2), rear biochemical BAF pond (3), clean water basin (4), water collecting basin (15) and strainer (16), described catalyzed oxidation pond (1), oxidation-stabilized pond (2), rear biochemical BAF pond (3) and clean water basin (4) are connected by transfer conduit (5) successively, it is inner that described strainer (16) is connected to catalyzed oxidation pond (1) by inlet channel (7), it is inner that one ozonizer (8) is connected to catalyzed oxidation pond (1) by gas pipeline (9), described clean water basin (4) are provided with prosopyle (41), posticum (42), the prosopyle (41) of described clean water basin (4) is connected by transfer conduit (5) with rear biochemical BAF pond (3), the posticum (42) of described clean water basin (4) is connected to a backwashing pump (11) one end, this backwashing pump (11) the other end is connected to catalyzed oxidation pond (1) by reflux line (10), rear biochemical BAF pond (3) is inner, described catalyzed oxidation pond (1) is filled with ozone catalytic particle (12) with fixed bed form, described water collecting basin (15) is positioned at the side opposing with oxidation-stabilized pond (2), catalyzed oxidation pond (1), lift pump (6) and strainer (16) is disposed with between this water collecting basin (15) and filtering basin (16),
Described ozone catalytic particle (12) is made up of the component of following weight part:
Particle diameter is the activated alumina particle 88.7 ~ 91.3 parts of 2 ~ 4mm,
Cupric oxide 1.4 ~ 1.6 parts,
Titanium dioxide 0.8 ~ 1.2 part,
Polyoxyethylene glycol 4 ~ 7 parts,
Polyvinyl alcohol 1.9 ~ 2.1 parts;
Be that the activated alumina particle 88.7 ~ 91.3 parts of 2 ~ 4mm mixes with cupric oxide 1.4 ~ 1.6 parts, titanium dioxide 0.8 ~ 1.2 part, polyoxyethylene glycol 4 ~ 7 parts, polyvinyl alcohol 1.9 ~ 2.1 parts in stirring mixer by described particle diameter, make the cupric oxide after Homogeneous phase mixing 1.4 ~ 1.6 parts, titanium dioxide 0.8 ~ 1.2 part, polyoxyethylene glycol 4 ~ 7 parts, polyvinyl alcohol 1.9 ~ 2.1 parts be covered in described activated alumina particle surface and form catalyzer mother bulb; Again catalyzer mother bulb is carried out drying successively, roasting obtains described ozone catalytic particle (12);
Described rear biochemical BAF pond (3) comprises anaerobic pond (31), Aerobic Pond (32) further, the top of described anaerobic pond (31) is connected by intervalve (33) with the bottom of Aerobic Pond (32), the bottom of described anaerobic pond (31) is connected with sewage water inlet pipe (34), and the top of described Aerobic Pond (32) is connected with water shoot (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), be placed with several anaerobic activated sludge particles (39) and some first Pinus massoniana Lamb (40) as filler in described anaerobism cavity (38), in several anaerobic activated sludge particles (39) described, part anaerobic activated sludge particle (39) is positioned at the first Pinus massoniana Lamb (40) on the surface;
Described Aerobic Pond (32) bottom, top are separately installed with lower sieve plate (41), upper sieve plate (42), this lower sieve plate (41), upper sieve plate (42) and Aerobic Pond (32) sidewall form aerobic cavity (43), be placed with several aerobic activated sludge particles (44) and some second Pinus massoniana Lamb (45) as filler in described aerobic cavity (43), in several aerobic activated sludge particles (44) described, part aerobic activated sludge particle (44) is positioned at the second Pinus massoniana Lamb (45) on the surface;
Described Aerobic Pond (32) is vertically provided with the aeration cylinder (46) of sieve plate (41) under an embedding, upper sieve plate (42) centre, one aeration head (47) is positioned at aeration cylinder (46) bottom, one is positioned at aeration cylinder (46) for the oxygen hose (48) transmitting oxygen and is connected to described aeration head (47), and described aerobic activated sludge particle (44) and the second Pinus massoniana Lamb (45) are 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, and this back window portion (49) side surface has been uniformly distributed circumferentially several fenestras (50).
2. coal chemical industrial waste water efficient low-consume according to claim 1 is except ammonia nitrogen comprehensive water treatment device, it is characterized in that: in described catalyzed oxidation pond (1), be provided with a dividing plate (13) vertically, thus catalyzed oxidation pond is divided into left and right chamber, described catalyzed oxidation pond (1) lower horizontal is provided with a sieve plate (14), the lower end of this dividing plate (13) is installed to the upper surface of sieve plate (14), and described ozone catalytic particle (12) is positioned at sieve plate (14) top and is positioned at dividing plate (13) both sides.
3. coal chemical industrial waste water efficient low-consume according to claim 1 is except ammonia nitrogen comprehensive water treatment device, it is characterized in that: described ozonizer (8) is connected to the bottom in catalyzed oxidation pond by gas pipeline (9).
4. coal chemical industrial waste water efficient low-consume according to claim 1 is except ammonia nitrogen comprehensive water treatment device, it is characterized in that: described drying keeps 4 ~ 6 hours under 100 ~ 120 DEG C of conditions.
5. coal chemical industrial waste water efficient low-consume according to claim 1 is except ammonia nitrogen comprehensive water treatment device, it is characterized in that: described roasting is incubated 7 ~ 9 hours under 350 ~ 520 DEG C of conditions.
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| CN109399856A (en) * | 2017-08-18 | 2019-03-01 | 中国科学院大连化学物理研究所 | A kind of semi-coke wastewater Zero discharge treatment method based on catalytic ozonation |
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| CN104759286A (en) * | 2015-03-12 | 2015-07-08 | 苏州清然环保科技有限公司 | Ozone catalyst preparation method |
| CN204874213U (en) * | 2015-08-24 | 2015-12-16 | 苏州科环环保科技有限公司 | Petrochemical industry waste water is with synthesizing water treatment facilities |
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| CN102491588A (en) * | 2011-12-06 | 2012-06-13 | 上海广联建设发展有限公司 | Method and device for sewage treatment |
| CN104759286A (en) * | 2015-03-12 | 2015-07-08 | 苏州清然环保科技有限公司 | Ozone catalyst preparation method |
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