CN106630365A - Green and environment-friendly RO (reverse osmosis) concentrated water advanced treatment device - Google Patents
Green and environment-friendly RO (reverse osmosis) concentrated water advanced treatment device Download PDFInfo
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- CN106630365A CN106630365A CN201510508840.3A CN201510508840A CN106630365A CN 106630365 A CN106630365 A CN 106630365A CN 201510508840 A CN201510508840 A CN 201510508840A CN 106630365 A CN106630365 A CN 106630365A
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Abstract
The invention discloses a green and environment-friendly RO (reverse osmosis) concentrated water advanced treatment device, which comprises a catalytic oxidation pool, an oxidation stabilization pool, a back BAF (biological aerated filter) and a clean water pool in sequential connection through a transmission pipeline, wherein the catalytic oxidation pool is filled with ozone catalytic particles in a fixed bed form; the ozone catalytic particles are prepared from the following ingredients in parts by weight: active aluminum oxide particles, copper oxide, titanium dioxide, polyethyleneglycol and polyvinyl alcohol; the active aluminum oxide particles, 1.4 to 1.6 parts of copper oxide, titanium dioxide, polyethyleneglycol and polyvinyl alcohol are mixed in a stirring mixer, so that the uniformly mixed copper oxide, titanium dioxide, polyethyleneglycol and polyvinyl alcohol cover the surfaces of the active aluminum oxide particles to form catalyst mother balls; the catalyst mother balls are sequentially dried and roasted to obtain a high-salinity-resistant ozone catalyst. The green and environment-friendly RO concentrated water advanced treatment device has the advantages that in the saline wastewater catalytic oxidation treatment process, wastewater COD removal, decolorization and fetor removal are realized; toxic pollutants are degraded; the feasibility of RO concentrated water advanced treatment is improved.
Description
Technical field
The present invention relates to a kind of environmental type RO concentrated water advanced treatment apparatus, belong to reverse osmosiss (RO) technical field of membrane.
Background technology
Reverse osmosiss (RO) membrane process generates the highly salt containing organic waste water being concentrated while high-quality water is produced, also.COD is generally more than discharge standard in such waste water, it is impossible to directly discharge.The water process difficulty greatly, there is no at present effectively method to carry out the individual processing waste water.Dense Organic substance in water is essentially the Organic substance of the dissolved, the chemical property and biochemical property of micro quantity organic pollutant is relatively stable, while TDS (total dissolved solid) concentration higher (TDS ＞ 4000mg/L) in concentrated water, particularly rich in inorganic ionss such as chloride ion.The characteristics of such sewage, causes the sewage to be processed by the way of biological oxidation, again can not be using physical treatment methods such as flocculation filtrations.Similarly, since the presence of substantial amounts of inorganic salt have impact on oxidation processes efficiency in water so that individually the efficiency by the way of oxidation processes is also affected.
It is less currently used for the technical matters for processing RO concentrated waters, mostly directly or indirectly discharge, existing treatment technology is mainly Membrane Materials method and Fenton process, and it is disadvantageous in that processing cost is high, and operating cost is high, treatment conditions are harsh, is also easy to produce secondary pollution etc..
The content of the invention
It is an object of the present invention to provide a kind of environmental type RO concentrated water advanced treatment apparatus, environmental type RO concentrated water advanced treatment apparatus reaction rates are rapid, the hydroxyl radical free radical of a large amount of active non-selectivities is produced, the multiple pollutant in oxidized waste water improves the biodegradability of waste water.
To reach above-mentioned purpose, the technical solution used in the present invention is：A kind of environmental type RO concentrated water advanced treatment apparatus, including the catalysis oxidation pond for passing sequentially through transfer conduit connection, oxidation-stabilized pond, biochemistry BAF ponds and clear water reserviors afterwards, one elevator pump is connected to inside catalysis oxidation pond by inlet channel, one ozonator is connected to inside catalysis oxidation pond by gas pipeline, the clear water reserviors are provided with inlet opening, apopore and return port, the inlet opening of the clear water reserviors is connected with rear biochemical BAF ponds by transfer conduit, the return port of the clear water reserviors is connected to a backwashing pump one end by reflux line, this backwashing pump other end is connected to catalysis oxidation pond by reflux line, afterwards inside biochemistry BAF ponds and positioned at elevator pump, transfer conduit between catalysis oxidation pond, the catalysis oxidation pond is filled with ozone catalytic granule with fixed bed form；
The ozone catalytic granule is made up of the component of following weight portion：
88.7～91.3 parts of the activated alumina particle that the particle diameter is 2～4mm is mixed with 1.4～1.6 parts of copper oxide, 0.8～1.2 part of titanium dioxide, 4～7 parts of Polyethylene Glycol, 1.9～2.1 parts of polyvinyl alcohol in stirring mixer so that uniform 1.4～1.6 parts of mixed copper oxide, 0.8～1.2 part of titanium dioxide, 4～7 parts of Polyethylene Glycol, 1.9～2.1 parts of polyvinyl alcohol are covered in the activated alumina particle surface and form catalyst mother bulb；Catalyst mother bulb is dried successively again, roasting obtains the ozone catalytic granule.
Further improved technical scheme is as follows in above-mentioned technical proposal：
As preferred, a dividing plate is vertically provided with the catalysis oxidation pond, so as to catalysis oxidation pond is divided into into left and right chamber, catalysis 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 the ozone catalytic granule is located at sieve plate top and positioned at dividing plate both sides.
Preferably, the ozonator is connected to the bottom in catalysis oxidation pond by gas pipeline.
Preferably, the drying is kept for 4～6 hours under the conditions of 100～120 DEG C.
Preferably, the roasting is incubated 7～9 hours under the conditions of 350～520 DEG C.
Because above-mentioned technical proposal is used, the present invention has compared with prior art following advantages and effect：
1, environmental type RO concentrated water advanced treatment apparatus of the present invention, its catalytic ozonation technology compares other chemical oxidization methods, reaction rate is rapid, produce the hydroxyl radical free radical of a large amount of active non-selectivities, multiple pollutant in oxidized waste water, improve the biodegradability of waste water, oxidation water outlet enters interior circulation BAF, in the filtration of biological bed, under bioflocculation and biological adsorption effect, the materials such as the Organic substance contained in waste water are further adsorbed oxidation, the method effectively combines biochemical treatment advantage with low cost and advanced oxidation high efficiency, improve the feasibility of RO concentrated water advanced treating；Secondly, improve the tolerance to RO concentrated waters, so that in the catalytic oxidation treatment process to saline sewage, catalyst ozone produces active hydroxyl radical free radical, and the biodegradability of removal, decolouring, de- stench, degraded toxic pollutant and raising waste water to waste water COD keeps good effect.
2nd, environmental type RO concentrated water advanced treatment apparatus of the present invention, its physical capacity of resistance to salt is strong, can normally use in TDS is not more than the waste water of 8000mg/L, catalyst activity is high, low cost, and preparation method is simple, therefore for extensive in saline sewage advanced treating of catalytic ozonation technology is of great significance using tool.
Description of the drawings
Accompanying drawing 1 is environmental type RO concentrated waters advanced treatment apparatus structural representation of the present invention.
In the figures above：1st, catalysis oxidation pond；2nd, oxidation-stabilized pond；3rd, rear biochemistry BAF ponds；4th, clear water reserviors；41st, inlet opening；42nd, apopore；43rd, return port；5th, transfer conduit；6th, elevator pump；7th, inlet channel；8th, ozonator；9th, gas pipeline；10th, reflux line；11st, backwashing pump；12nd, ozone catalytic granule；13rd, dividing plate；14th, sieve plate.
Specific embodiment
With reference to embodiment, the invention will be further described：
Embodiment 1～4：A kind of environmental type RO concentrated water advanced treatment apparatus，Including the catalysis oxidation pond 1 for passing sequentially through the connection of transfer conduit 5、Oxidation-stabilized pond 2、Biochemistry BAF ponds 3 and clear water reserviors 4 afterwards，One elevator pump 6 is connected to inside catalysis oxidation pond 1 by inlet channel 7，One ozonator 8 is connected to inside catalysis oxidation pond 1 by gas pipeline 9，The clear water reserviors 4 are provided with inlet opening 41、Apopore 42 and return port 43，The inlet opening 41 of the clear water reserviors 4 is connected with rear biochemical BAF ponds 3 by transfer conduit 5，The return port 43 of the clear water reserviors 4 is connected to the one end of a backwashing pump 11 by reflux line 10，This other end of backwashing pump 11 is connected to catalysis oxidation pond 1 by reflux line 10、Afterwards inside biochemistry BAF ponds 3 and positioned at elevator pump 6、Inlet channel 7 between catalysis oxidation pond 1，The catalysis oxidation pond 1 is filled with ozone catalytic granule 12 with fixed bed form；
The ozone catalytic granule 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 |
| Copper 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 |
The activated alumina particle particle diameter is 2～4mm；
88.7～91.3 parts of the activated alumina particle that the particle diameter is 2～4mm is mixed with 1.4～1.6 parts of copper oxide, 0.8～1.2 part of titanium dioxide, 4～7 parts of Polyethylene Glycol, 1.9～2.1 parts of polyvinyl alcohol in stirring mixer so that uniform 1.4～1.6 parts of mixed copper oxide, 0.8～1.2 part of titanium dioxide, 4～7 parts of Polyethylene Glycol, 1.9～2.1 parts of polyvinyl alcohol are covered in the activated alumina particle surface and form catalyst mother bulb；Catalyst mother bulb is dried successively again, roasting obtains the ozone catalytic granule 12.
A dividing plate 13 is vertically provided with above-mentioned catalysis oxidation pond 1, so as to catalysis oxidation pond is divided into into left and right chamber, the lower horizontal of catalysis oxidation pond 1 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 the ozone catalytic granule 12 is located at the top of sieve plate 14 and positioned at the both sides of dividing plate 13.
Above-mentioned ozonator 8 is connected to the bottom in catalysis oxidation pond by gas pipeline 9.
Above-mentioned drying is kept for 4～6 hours under the conditions of 100～120 DEG C.
Above-mentioned roasting is incubated 7～9 hours under the conditions of 350～520 DEG C
The preparation method of the ozone catalytic granule 12 of above-described embodiment, comprises the following steps：
Step one, 88.7～91.3 parts of activated alumina distilled water are cleaned for several times to remove the impurity on its surface, and be dried to quality constant weight, the particle diameter of the activated alumina is 2～4mm；
Step 2,88.7～91.3 parts of activated aluminas for obtaining step one mix with 1.4～1.6 parts of copper oxide, 0.8～1.2 part of titanium dioxide, 4～7 parts of Polyethylene Glycol, 1.9～2.1 parts of polyvinyl alcohol in stirring mixer so that uniform 1.4～1.6 parts of mixed copper oxide, 0.8～1.2 part of titanium dioxide, 4～7 parts of Polyethylene Glycol, 1.9～2.1 parts of polyvinyl alcohol are covered in the activated alumina particle surface and form catalyst mother bulb；
Step 3, from stirring mixer the catalyst mother bulb is taken out, after drying at room temperature, be put into baking oven, be dried under the conditions of 100～120 DEG C and obtain dried catalyst mother bulb；
Step 4, dried catalyst mother bulb is put in Muffle furnace, the roasting under the conditions of 350～520 DEG C obtains resistance to high salt ozone catalyst.
Drying time is 5 hours under the conditions of 100～120 DEG C in above-mentioned steps three, and roasting time is 8 hours under the conditions of 350～520 DEG C in above-mentioned steps four.
Ozone catalytic particulate catalytic effect assessment of the present invention, experimental technique and data are shown in Table 2：
In the test of dynamic continuous flow catalytic ozonation, catalyst amountses are 1.5L, ozone dosage 100mg/L, hydraulic detention time 1h, ozone dosage are controlled using gas flowmeter in experiment, by peristaltic pump continuum micromeehanics.After 3 cycle catalytic effect stabilities of operation, COD is repeatedly measured by sampling, is averaged.
Experiment condition：Dynamic continuous flow operational mode, ozone dosage 100mg/L, HRT=1h.
Water inlet source：Certain factory RO concentrated waters, COD about 350mg/L, TDS is 3500mg/L.
The Contrast on effect of the different ozone catalyst catalysis oxidation RO concentrated waters of table 2
Knowable to data in table 2, relative to Zhonghai Asphalt's conventional alumina ozone catalyst, resistance to high salt ozone catalyst catalysis oxidation RO concentrated water, it is 100mg/L in ozone dosage, hydraulic detention time is under 1h service conditions, COD clearances are up to 34.2%, and ozone efficiency is 1.1, far superior to conventional ozone catalyst.
The present embodiment environmental type RO concentrated water advanced treatment apparatus, specific implementation step is as follows：
(1) strong brine of RO devices mixes with the backflow from concentrated water clear water reserviors, and Jing pumps are lifted into catalytic ozonation pond；
(2) mixing water enters oxidation pond, while adding ozone into the pond of catalytic ozonation pond, ozone dosage 40mg/L, sewage oxidation time of staying 2h carry out catalytic oxidation；
(3) aoxidize water outlet gravity flow and enter oxidation-stabilized pond, the oxidation-stabilized time is 2.5 hours, biochemical interior circulation BAF pond after gravity flow is entered after the oxidant in sewage is voluntarily decayed；
(4) interior circulation BAF (hydraulic detention time is 4 hours), water outlet gravity flow enters concentrated water clear water reserviors, arranges outside overflow；
(5) backwash in catalysis oxidation pond adopts the draining of rear biochemical interior circulation BAF, supernatant circular treatment, backwash draining to enter recoil sedimentation tank, and sludge is into sludge drainage system process.
The present embodiment first by pretreated RO concentrated waters sewage enter collecting-tank with，The backflow mixing of concentrated water clear water reserviors，Purpose is to reduce the TDS (total dissolved solid) in RO concentrated water sewage，The dirt of the oxidation load and ozone catalyst that reduce COBR ponds is blocked up，Water outlet gravity flow enters the oxidation pond for being filled with metal ion catalyst，The ozone of 40～60mgO3/L water is added simultaneously，In the presence of catalyst，The ozone of high oxidative is changed into that oxidisability is higher and the selective hydroxyl radical free radical of non-oxidation，The activation energy of hydroxyl radical free radical oxidation reaction is reduced simultaneously，Hydroxyl radical free radical decomposes remaining hardly degraded organic substance mineralising in RO concentrated water sewage，Improve the biodegradability of sewage，After oxidation stable water outlet，Flow automatically to and carry out behind interior circulation BAF pond biological oxidation process，Oxidation water outlet gravity flow enters concentrated water clear water reserviors，Arrange outside overflow，So as to reach the advanced treating purpose of RO concentrated water sewage.
The present embodiment environmental type RO concentrated water advanced treatment apparatus, comprehensive treatment effect is as shown in table 3：
The embodiment water analysis data of table 3
As shown in table 3, RO concentrated waters are through COBR technical finesses, the COD clearances average of its catalytic ozonation section is 46.9%, oxidation water outlet COD averages are 37.4mg/L, the water outlet COD averages of interior circulation BAF biochemistry section are 29.3mg/L, the COD total removal rates average of COBR is 59.3%, and the technique processes feasible efficient in the engineer applied of RO concentrated waters.
Above-described embodiment technology design only to illustrate the invention and feature, its object is to allow person skilled in the art will appreciate that present disclosure and implement according to this, can not be limited the scope of the invention with this.All equivalence changes made according to spirit of the invention or modification, all should be included within the scope of the present invention.
Claims (5)
1. a kind of environmental type RO concentrated water advanced treatment apparatus, it is characterised in that：Including passing sequentially through biography
The catalysis oxidation pond (1) of defeated pipeline (5) connection, oxidation-stabilized pond (2), rear biochemistry BAF ponds (3) and
Clear water reserviors (4) a, elevator pump (6) is connected to catalysis oxidation pond (1) inside by inlet channel (7),
One ozonator (8) is connected to catalysis oxidation pond (1) inside, the clear water by gas pipeline (9)
Pond (4) is provided with inlet opening (41), apopore (42) and return port (43), the clear water reserviors (4)
Inlet opening (41) be connected by transfer conduit (5) with rear biochemical BAF ponds (3), the clear water reserviors (4)
Return port (43) backwashing pump (11) one end is connected to by reflux line (10), this backwashing pump (11)
The other end is connected to catalysis oxidation pond (1), rear biochemistry BAF ponds (3) inside by reflux line (10)
And the inlet channel (7) being located between elevator pump (6), catalysis oxidation pond (1), the catalysis oxidation pond (1)
Ozone catalytic granule (12) is filled with fixed bed form；
The ozone catalytic granule (12) is made up of the component of following weight portion：
By 1.4～1.6 parts of 88.7～91.3 parts of activated alumina particle that the particle diameter is 2～4mm and copper oxide,
0.8～1.2 part of titanium dioxide, 4～7 parts of Polyethylene Glycol, 1.9～2.1 parts of polyvinyl alcohol are mixed in stirring mixer
Close so that uniform 1.4～1.6 parts of mixed copper oxide, 0.8～1.2 part of titanium dioxide, Polyethylene Glycol 4～7
Part, 1.9～2.1 parts of polyvinyl alcohol are covered in the activated alumina particle surface and form catalyst mother bulb；Again will
Catalyst mother bulb is dried successively, roasting obtains the ozone catalytic granule (12).
2. environmental type RO concentrated water advanced treatment apparatus according to claim 1, it is characterised in that：
A dividing plate (13) is vertically provided with the catalysis oxidation pond (1), so as to catalysis oxidation pond be divided into
Left and right chamber, catalysis oxidation pond (1) lower horizontal is provided with a sieve plate (14), this dividing plate (13)
Lower end be installed to the upper surface of sieve plate (14), the ozone catalytic granule (12) is positioned at sieve plate (14)
Top and positioned at dividing plate (13) both sides.
3. environmental type RO concentrated water advanced treatment apparatus according to claim 1, it is characterised in that：
The ozonator (8) is connected to the bottom in catalysis oxidation pond by gas pipeline (9).
4. environmental type RO concentrated water advanced treatment apparatus according to claim 1, it is characterised in that：
The drying is kept for 4～6 hours under the conditions of 100～120 DEG C.
5. environmental type RO concentrated water advanced treatment apparatus according to claim 1, it is characterised in that：
The roasting is incubated 7～9 hours under the conditions of 350～520 DEG C.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107344806A (en) * | 2017-09-05 | 2017-11-14 | 博天环境集团股份有限公司 | A kind of coal liquifaction RO concentrated waters processing system and its processing method |
| CN115007143A (en) * | 2022-07-20 | 2022-09-06 | 北京清新环境技术股份有限公司 | Sewage treatment catalyst, and composite granulation method and application thereof |
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| CN101863589A (en) * | 2010-06-09 | 2010-10-20 | 中国海洋石油总公司 | Method for advanced treatment of wastewater by using combination of catalytic ozonation and internal circulation biological filter |
| CN104759286A (en) * | 2015-03-12 | 2015-07-08 | 苏州清然环保科技有限公司 | Ozone catalyst preparation method |
| CN104787924A (en) * | 2015-03-13 | 2015-07-22 | 苏州科环环保科技有限公司 | Caprolactam sewage advanced treatment method using ozone catalytic oxidation |
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2015
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101863589A (en) * | 2010-06-09 | 2010-10-20 | 中国海洋石油总公司 | Method for advanced treatment of wastewater by using combination of catalytic ozonation and internal circulation biological filter |
| CN104759286A (en) * | 2015-03-12 | 2015-07-08 | 苏州清然环保科技有限公司 | Ozone catalyst preparation method |
| CN104787924A (en) * | 2015-03-13 | 2015-07-22 | 苏州科环环保科技有限公司 | Caprolactam sewage advanced treatment method using ozone catalytic oxidation |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107344806A (en) * | 2017-09-05 | 2017-11-14 | 博天环境集团股份有限公司 | A kind of coal liquifaction RO concentrated waters processing system and its processing method |
| CN107344806B (en) * | 2017-09-05 | 2023-10-27 | 博天环境集团股份有限公司 | Coal-to-oil RO concentrated water treatment system and treatment method thereof |
| CN115007143A (en) * | 2022-07-20 | 2022-09-06 | 北京清新环境技术股份有限公司 | Sewage treatment catalyst, and composite granulation method and application thereof |
| CN115007143B (en) * | 2022-07-20 | 2024-04-09 | 北京清新环境技术股份有限公司 | Sewage treatment catalyst and composite granulating method and application thereof |
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