CN107867752A - A kind of circulating sewage processing method and processing device - Google Patents
A kind of circulating sewage processing method and processing device Download PDFInfo
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- CN107867752A CN107867752A CN201610855720.5A CN201610855720A CN107867752A CN 107867752 A CN107867752 A CN 107867752A CN 201610855720 A CN201610855720 A CN 201610855720A CN 107867752 A CN107867752 A CN 107867752A
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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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Abstract
The embodiment provides a kind of circulating sewage processing method and processing device, method includes：Water is delivered to supergravity reactor；Gas ozoniferous will be wrapped and be delivered to supergravity reactor；Elevated Gravity is formed in supergravity reactor, Elevated Gravity has the horizontal G of hypergravity, so as to carry out the mass transfer between water and bag gas ozoniferous；Discharge bay is expelled to from the water of supergravity reactor outflow；Make the part water in discharge bay be back to supergravity reactor to be handled again.The procedure of the present invention is simple, continuous operation, nucleus equipment supergravity reactor small volume, takes up an area less.
Description
Technical field
The present invention relates to sewage disposal, more particularly, to circulating sewage processing method and processing device.
Background technology
China's shortage of water resources, water pollution are serious, and water environment faces abnormal severe situation, and Efforts To Develop water pollution is controlled
Reason, particularly strengthens trade effluent improvement and treatment for reuse is extremely urgent.Recirculated water is with a very important position in industrial system,
On the one hand it is related to the stable operation of process units, one side internal circulating load is huge, loss flow also should not be underestimated, necessary blowdown
It is the important component (accounting for more than 1/5th) of loss, by circulating sewage with locating in system together with other peace and quiet lower water
Reason reuse is industrial system using water wisely, a key for reducing discharge.
Circulating sewage Producing reason is mainly：Recirculated water has a certain degree of evaporation when passing through cooling tower, evaporation
Salt concentration, long-term circulation do not cause the dissolved salts in recirculated water to be constantly concentrated in the water fallen, and salt content, which is continuously increased, to draw
Play fouling and corrosion, it is therefore necessary to a part of recirculated water of constantly draining, supplement fresh water, keep certain salinity；Cooling tower
Reclaimed water directly carries out contact with air and exchanged, and brings a large amount of dusts into, causes turbidity of circulating water to raise, some exists as sludgd deposition
Equipment, pipeline, basin bottom, thus must drain it is a part of, be supplemented a part of fresh water, to prevent substantial amounts of sludgd deposition；
Recirculated water can be continuously added chemical agent (corrosion inhibiter, antisludging agent, bactericide etc.) in operation, processing medium also not non-leaking,
These can cause water pollutant, impurity constantly to increase and influence water quality, therefore the part recirculated water that must drain, and supplement fresh water,
Ensure dirt impurity in the indication range of permission.The characteristics of such producing cause determines circulating sewage：Salt content compared with
Height, turbidity (or suspension content) is high, has a certain amount of COD (COD).By circulating sewage treatment for reuse, pin
Drop turbidity is formulated property, except COD and desalination process, but existing technique is typically that " pretreatment such as coagulating sedimentation, filtering is dropped
Turbidity, the double film desalinations of ultrafiltration+counter-infiltration ", do not have COD removal units, in practice it has proved that this aspect can cause fouling membrane serious, separately
On the one hand reverse osmosis concentrated water COD can be made to exceed discharge standard.Therefore, it is necessary pointedly to set COD removal units.
COD in circulating sewage is not especially high (usual 100mg/L or so), but is antisludging agent, corrosion inhibiter, sterilization mostly
Agent and the contribution of process unit leakage, biodegradability is poor, and the applicability of biochemical process can have a greatly reduced quality, the processing effect of chemical method
Fruit and stability can be more preferable.
Ozone oxidation is to develop a kind of chemical method water technology earlier, based on ozone (O3) strong oxidizing property, be used for
Sterilizing, degraded remove pollutant, deodorization and decolouring, open loop chain rupture, raising particularly in complicated hardly degraded organic substance
Effect protrudes in terms of biodegradability.However, although ozone oxidation water technology development for many years, but its reality industrial water system
It is less in system to be applied or application effect is not good enough.Subject matter and reason are：(1) at present, the mainstream technology of ozone generation
It is using air or pure oxygen as raw material, using corona discharge process, the process high energy consumption, yield are relatively low, determine the money of the technology
Source cost and quality；(2) ozone solubility in water is relatively low, and the mass transfer effect of conventional contacts equipment or mode (bubbling aeration) is not
Ideal, cause the absorption efficiency of gas-liquid contact low, limit the ozone concentration for participating in reaction, and then limit pollutant process effect
Fruit, relatively low utilization rate and treatment effeciency cause ozone usage to be significantly increased, and then exacerbate the cost disadvantage of the technology；(3)
Traditional ozone treating process efficiency is low, length of required processing time, and ozone occurs and haptoreaction facility floor space is naturally huge,
It should not thus be applied to build compact or the less Large Water Treatment Field in place.
The content of the invention
The present invention is directed to circulating sewage water quality characteristicses and disposal status, there is provided its COD removal technology, is handled back with ensureing
With.Demand for circulating sewage treatment for reuse to COD further treatment techniques, the present invention propose that ozone oxidation is used for the row of circulation
Sewage disposal.
It (is mainly that ozone contacts biography with water to remove the problem of technique is present as circulating sewage COD for ozone oxidation
Matter effect is undesirable and its causes series of problems), the present invention propose by strengthen gas-liquid mass transfer high-gravity technology and equipment with it is smelly
Oxygen oxidation bonding gets up, and to improve absorption level and efficiency of the water to ozone, and then contaminant degradation effect is good, efficiency
Height, ozone usage few (cost-effective), facility take up an area few purpose so that the circulating sewage COD minimizing technologies proposed are high
Effect, practicality.
The embodiment provides a kind of method of processing cycle sewer, including：Water is delivered to hypergravity
Reactor；Gas ozoniferous will be wrapped and be delivered to the supergravity reactor；Hypergravity is formed in the supergravity reactor
Environment, the Elevated Gravity have the horizontal G of hypergravity, so as to carry out between the water and the bag gas ozoniferous
Mass transfer；Discharge bay is expelled to from the water of supergravity reactor outflow；It is back to the part water in the discharge bay described
Supergravity reactor is handled again.
In the above-mentioned methods, wherein, before water is delivered into supergravity reactor, the water, which enters, comes pond.
In the above-mentioned methods, wherein, bag gas ozoniferous and the water in the supergravity reactor
Gas-liquid flow-rate ratio is between 1~5.
In the above-mentioned methods, wherein, the ozone concentration of the bag gas ozoniferous is between 10~120mg/L.
In the above-mentioned methods, wherein, the ozone concentration of the bag gas ozoniferous is between 10~60mg/L.
In the above-mentioned methods, wherein, the horizontal G of hypergravity is 20~300g, and wherein g is terrestrial gravitation acceleration.
In the above-mentioned methods, wherein, residence time of the water in the supergravity reactor is within 1 second.
In the above-mentioned methods, wherein, the reflux ratio of the water outlet in the discharge bay is between 0.2~0.8.
Another embodiment of the present invention provides a kind of device of processing cycle sewer, including：Come pond, for storing
Water；Ozone generation system, gas ozoniferous is wrapped for generating；Supergravity reactor, it is described for forming Elevated Gravity
Elevated Gravity has the horizontal G of hypergravity, so as to carry out the mass transfer between the water and the bag gas ozoniferous；Water outlet
Pond, for receiving the water outlet from supergravity reactor discharge, and by part effluent recycling to the supergravity reactor
Handled again.
In said apparatus, in addition to：First pump, be arranged on it is described come between pond and the supergravity reactor；The
Two pumps, it is arranged between the discharge bay and the supergravity reactor；First fluid flowmeter, be arranged on it is described come pond and
Between the supergravity reactor；Second liquid flowmeter, it is arranged between the discharge bay and the supergravity reactor；With
And gas flowmeter, it is arranged between the ozone generation system and the supergravity reactor.
Method and device provided by the invention disclosure satisfy that circulating sewage Treatment for Reuse process to COD depth removal technologies
Demand.Hypergravity ozone oxidation can make circulating sewage COD be down to 30mg/L or so by 100mg/L or so, beneficial to follow-up work
The stable operation of skill；In the method implementation process, ozone and water time of contact are short, far below traditional handicraft dozens of minutes (for example,
In order to reach similar effect, traditional Bubbling method ozone process needs to contact 30min), significantly improve treatment effeciency, reduce
Ozone usage, operating cost is saved；The procedure of the present invention is simple, continuous operation, nucleus equipment (supergravity reactor)
Small volume, take up an area less.
Brief description of the drawings
Fig. 1 shows the schematic diagram of the device of processing cycle sewer, and 1 is to come pond, and 2 be ozone generation system, 3 be into
Water ga(u)ge, 4 be recycle stream gauge, and 5 be discharge bay, and 6 be supergravity reactor.
Embodiment
The following examples can make those skilled in the art that the present invention be more fully understood, but not limit in any way
The present invention.
High-gravity technology (Higee) is a kind of process intensification technology of continuous development, by using particular device (rotary filling
Fill bed, Rotating Packed Bed, RPB, i.e. supergravity reactor) material is in the CENTRIFUGAL ACCELERATING higher than terrestrial gravitation
Spend in field, to strengthen gas-liquid mass transfer or liquid liquid mixed process.In the super gravity field that RPB is built, fluid level is scattered, interface is quick
Renewal, the fierce collision of infinitesimal, determine that mass transfer effect, the molecule diffusion of efficiency and interphase mass transfer effect are all significantly strengthened,
Mass transfer mixing efficiency is thus very high.Compared with legacy equipment (such as packed tower, sieve-plate tower, stirred tank, aeration tank), RPB biography
Matter efficiency, molecular mixing efficiency are higher by 1~3 order of magnitude.Chinese patent 91109255.2,91111028.3,
200520100685.3rd, 01268009.5,02114174.6,200510032296.6,200410042631.6 etc. bag is disclosed
Include the primary structure form and feature of the hypergravity equipment such as RPB, deflector type, screw path type, rotating compact disc formula.
Demand of the present invention based on circulating sewage to the efficient removal technologies of COD, based on ozonation technology and hypergravity
The characteristics of technology, solve key issue present in its practical application, form a kind of circulating sewage processing side efficiently, practical
Method.
Currently invention addresses ozone and water contact process to strengthen this key point, and proposition will be in the mass-transfer progress side of reinforcing
Face shows excellent high-gravity technology and is applied to ozone oxidation process, and as COD method in removal circulating sewage,
Created good conditions for follow-up embrane method treatment for reuse.It is described with reference to the device shown in Fig. 1.
The device of the present invention mainly includes coming pond 1, ozone generation system 2, feed water flow gauge 3, recycle stream gauge 4, gone out
Pond 5, supergravity reactor 6 and pump etc..Circulating sewage after the coagulating kinetics of front end enters of the present invention
Device, arrive first at and come pond 1.The water come in pond 1 reaches supergravity reactor after pump conveys, feed water flow gauge 3 measures
6；Gas ozoniferous is produced by ozone generation system 2 (including the part such as source of the gas, ozone generator, cooler and controller),
Supergravity reactor 6 is also delivered to after flowmeter and the metering of ozone concentration meter.Gas-liquid flow in adults power reactor 6
Than (volume ratio) between 1~5；The ozone concentration of air inlet is controlled between 10~120mg/L, preferably 10~60mg/L.At this
The ozone of concentration range can both realize the higher dispersion efficiency of ozone, while also save ozone usage.Supergravity reactor 6
Interior rotor rotates, and forms Elevated Gravity, and the horizontal G of hypergravity controls that (g is terrestrial gravitation acceleration, 9.8m/ in 20~300g
s2).In the case, water and gas Rapid contact, ozone and pollutant fast reaction (liquid residence time is within 1 second),
Pollutant is degraded.Then, aqueous phase, gas phase are discharged through each outlet respectively, and water goes to discharge bay 5, and gas is through ozone layer destroying
Discharged after device.Because the liquid residence time in supergravity reactor 6 is extremely short, therefore the part water in discharge bay 5 is after metering
Supergravity reactor 6 (flow back) can be inputted again, (return flow accounts for be drained into the totality of discharge bay 5 and enter flow quantity reflux ratio
Ratio) control 0.2~0.8.Discharge bay 5 is provided with overfall, confesses and is arranged outside water.
Illustrated with reference to specific embodiment.
Embodiment 1
Circulating sewage after the coagulating kinetics of front end, which reaches, comes pond 1, and the COD for measuring water is 82mg/L.Come
Water in pond 1 reaches supergravity reactor 6 after pump conveys, feed water flow gauge 3 measures；Gas ozoniferous is occurred by ozone
System 2 is produced, and supergravity reactor 6, ozone concentration 40mg/L are also delivered to after flowmeter and the metering of ozone concentration meter.Control
Gas-liquid flow-rate ratio in supergravity reactor 6 processed is 3.Rotor in supergravity reactor 6 rotates, and forms Elevated Gravity, surpasses
Gravity horizontal G is controlled in 50g.In the case, water and ozone Rapid contact, (liquid stops ozone with pollutant fast reaction
Time is within 1 second), pollutant is degraded.Then, aqueous phase, gas phase are discharged through each outlet respectively, and water goes to discharge bay 5,
Ozone gas discharges after ozone destruct device.Part water in discharge bay 5 is back to supergravity reactor again after metering
6, reflux ratio (return flow account for drain into the totality of discharge bay 5 enter the ratio of flow quantity) control is 0.6.Discharge bay 5 is provided with overflow
Mouthful, confess and arranged outside water, the COD for measuring water outlet is 28mg/L.
Embodiment 2
Circulating sewage after the coagulating kinetics of front end, which reaches, comes pond 1, and the COD for measuring water is 82mg/L.Come
Water in pond 1 reaches supergravity reactor 6 after pump conveys, feed water flow gauge 3 measures；Gas ozoniferous is occurred by ozone
System 2 is produced, and supergravity reactor 6, ozone concentration 40mg/L are also delivered to after flowmeter and the metering of ozone concentration meter.Control
Gas-liquid flow-rate ratio in supergravity reactor 6 processed is 5.Rotor in supergravity reactor 6 rotates, and forms Elevated Gravity, surpasses
Gravity horizontal G is controlled in 50g.In the case, water and ozone Rapid contact, (liquid stops ozone with pollutant fast reaction
Time is within 1 second), pollutant is degraded.Then, aqueous phase, gas phase are discharged through each outlet respectively, and water goes to discharge bay 5,
Ozone gas discharges after ozone destruct device.Part water in discharge bay 5 is back to supergravity reactor again after metering
6, reflux ratio (return flow account for drain into the totality of discharge bay 5 enter the ratio of flow quantity) control is 0.6.Discharge bay 5 is provided with overflow
Mouthful, confess and arranged outside water, the COD for measuring water outlet is 24mg/L.
Embodiment 3
Circulating sewage after the coagulating kinetics of front end, which reaches, comes pond 1, and the COD for measuring water is 82mg/L.Come
Water in pond 1 reaches supergravity reactor 6 after pump conveys, feed water flow gauge 3 measures；Gas ozoniferous is occurred by ozone
System 2 is produced, and supergravity reactor 6, ozone concentration 40mg/L are also delivered to after flowmeter and the metering of ozone concentration meter.Control
Gas-liquid flow-rate ratio in supergravity reactor 6 processed is 1.Rotor in supergravity reactor 6 rotates, and forms Elevated Gravity, surpasses
Gravity horizontal G is controlled in 50g.In the case, water and ozone Rapid contact, (liquid stops ozone with pollutant fast reaction
Time is within 1 second), pollutant is degraded.Then, aqueous phase, gas phase are discharged through each outlet respectively, and water goes to discharge bay 5,
Ozone gas discharges after ozone destruct device.Part water in discharge bay 5 is back to supergravity reactor again after metering
6, reflux ratio (return flow account for drain into the totality of discharge bay 5 enter the ratio of flow quantity) control is 0.6.Discharge bay 5 is provided with overflow
Mouthful, confess and arranged outside water, the COD for measuring water outlet is 30mg/L.
Embodiment 4
Circulating sewage after the coagulating kinetics of front end, which reaches, comes pond 1, and the COD for measuring water is 89mg/L.Come
Water in pond 1 reaches supergravity reactor 6 after pump conveys, feed water flow gauge 3 measures；Gas ozoniferous is occurred by ozone
System 2 is produced, and supergravity reactor 6, ozone concentration 20mg/L are also delivered to after flowmeter and the metering of ozone concentration meter.Control
Gas-liquid flow-rate ratio in supergravity reactor 6 processed is 3.Rotor in supergravity reactor 6 rotates, and forms Elevated Gravity, surpasses
Gravity horizontal G is controlled in 50g.In the case, water and ozone Rapid contact, (liquid stops ozone with pollutant fast reaction
Time is within 1 second), pollutant is degraded.Then, aqueous phase, gas phase are discharged through each outlet respectively, and water goes to discharge bay 5,
Ozone gas discharges after ozone destruct device.Part water in discharge bay 5 is back to supergravity reactor again after metering
6, reflux ratio (return flow account for drain into the totality of discharge bay 5 enter the ratio of flow quantity) control is 0.6.Discharge bay 5 is provided with overflow
Mouthful, confess and arranged outside water, the COD for measuring water outlet is 30mg/L.
Embodiment 5
Circulating sewage after the coagulating kinetics of front end, which reaches, comes pond 1, and the COD for measuring water is 89mg/L.Come
Water in pond 1 reaches supergravity reactor 6 after pump conveys, feed water flow gauge 3 measures；Gas ozoniferous is occurred by ozone
System 2 is produced, and supergravity reactor 6, ozone concentration 40mg/L are also delivered to after flowmeter and the metering of ozone concentration meter.Control
Gas-liquid flow-rate ratio in supergravity reactor 6 processed is 3.Rotor in supergravity reactor 6 rotates, and forms Elevated Gravity, surpasses
Gravity horizontal G is controlled in 50g.In the case, water and ozone Rapid contact, (liquid stops ozone with pollutant fast reaction
Time is within 1 second), pollutant is degraded.Then, aqueous phase, gas phase are discharged through each outlet respectively, and water goes to discharge bay 5,
Ozone gas discharges after ozone destruct device.Part water in discharge bay 5 is back to supergravity reactor again after metering
6, reflux ratio (return flow account for drain into the totality of discharge bay 5 enter the ratio of flow quantity) control is 0.6.Discharge bay 5 is provided with overflow
Mouthful, confess and arranged outside water, the COD for measuring water outlet is 29mg/L.
Embodiment 6
Circulating sewage after the coagulating kinetics of front end, which reaches, comes pond 1, and the COD for measuring water is 89mg/L.Come
Water in pond 1 reaches supergravity reactor 6 after pump conveys, feed water flow gauge 3 measures；Gas ozoniferous is occurred by ozone
System 2 is produced, and supergravity reactor 6, ozone concentration 90mg/L are also delivered to after flowmeter and the metering of ozone concentration meter.Control
Gas-liquid flow-rate ratio in supergravity reactor 6 processed is 3.Rotor in supergravity reactor 6 rotates, and forms Elevated Gravity, surpasses
Gravity horizontal G is controlled in 50g.In the case, water and ozone Rapid contact, (liquid stops ozone with pollutant fast reaction
Time is within 1 second), pollutant is degraded.Then, aqueous phase, gas phase are discharged through each outlet respectively, and water goes to discharge bay 5,
Ozone gas discharges after ozone destruct device.Part water in discharge bay 5 is back to supergravity reactor again after metering
6, reflux ratio (return flow account for drain into the totality of discharge bay 5 enter the ratio of flow quantity) control is 0.6.Discharge bay 5 is provided with overflow
Mouthful, confess and arranged outside water, the COD for measuring water outlet is 24mg/L.
Embodiment 7
Circulating sewage after the coagulating kinetics of front end, which reaches, comes pond 1, and the COD for measuring water is 96mg/L.Come
Water in pond 1 reaches supergravity reactor 6 after pump conveys, feed water flow gauge 3 measures；Gas ozoniferous is occurred by ozone
System 2 is produced, and supergravity reactor 6, ozone concentration 40mg/L are also delivered to after flowmeter and the metering of ozone concentration meter.Control
Gas-liquid flow-rate ratio in supergravity reactor 6 processed is 3.Rotor in supergravity reactor 6 rotates, and forms Elevated Gravity, surpasses
Gravity horizontal G is controlled in 20g.In the case, water and ozone Rapid contact, (liquid stops ozone with pollutant fast reaction
Time is within 1 second), pollutant is degraded.Then, aqueous phase, gas phase are discharged through each outlet respectively, and water goes to discharge bay 5,
Ozone gas discharges after ozone destruct device.Part water in discharge bay 5 is back to supergravity reactor again after metering
6, reflux ratio (return flow account for drain into the totality of discharge bay 5 enter the ratio of flow quantity) control is 0.6.Discharge bay 5 is provided with overflow
Mouthful, confess and arranged outside water, the COD for measuring water outlet is 38mg/L.
Embodiment 8
Circulating sewage after the coagulating kinetics of front end, which reaches, comes pond 1, and the COD for measuring water is 96mg/L.Come
Water in pond 1 reaches supergravity reactor 6 after pump conveys, feed water flow gauge 3 measures；Gas ozoniferous is occurred by ozone
System 2 is produced, and supergravity reactor 6, ozone concentration 40mg/L are also delivered to after flowmeter and the metering of ozone concentration meter.Control
Gas-liquid flow-rate ratio in supergravity reactor 6 processed is 3.Rotor in supergravity reactor 6 rotates, and forms Elevated Gravity, surpasses
Gravity horizontal G is controlled in 50g.In the case, water and ozone Rapid contact, (liquid stops ozone with pollutant fast reaction
Time is within 1 second), pollutant is degraded.Then, aqueous phase, gas phase are discharged through each outlet respectively, and water goes to discharge bay 5,
Ozone gas discharges after ozone destruct device.Part water in discharge bay 5 is back to supergravity reactor again after metering
6, reflux ratio (return flow account for drain into the totality of discharge bay 5 enter the ratio of flow quantity) control is 0.6.Discharge bay 5 is provided with overflow
Mouthful, confess and arranged outside water, the COD for measuring water outlet is 32mg/L.
Embodiment 9
Circulating sewage after the coagulating kinetics of front end, which reaches, comes pond 1, and the COD for measuring water is 96mg/L.Come
Water in pond 1 reaches supergravity reactor 6 after pump conveys, feed water flow gauge 3 measures；Gas ozoniferous is occurred by ozone
System 2 is produced, and supergravity reactor 6, ozone concentration 40mg/L are also delivered to after flowmeter and the metering of ozone concentration meter.Control
Gas-liquid flow-rate ratio in supergravity reactor 6 processed is 3.Rotor in supergravity reactor 6 rotates, and forms Elevated Gravity, surpasses
Gravity horizontal G is controlled in 100g.In the case, water and ozone Rapid contact, (liquid stops ozone with pollutant fast reaction
Time is within 1 second), pollutant is degraded.Then, aqueous phase, gas phase are discharged through each outlet respectively, and water goes to discharge bay 5,
Ozone gas discharges after ozone destruct device.Part water in discharge bay 5 is back to supergravity reactor again after metering
6, reflux ratio (return flow account for drain into the totality of discharge bay 5 enter the ratio of flow quantity) control is 0.6.Discharge bay 5 is provided with overflow
Mouthful, confess and arranged outside water, the COD for measuring water outlet is 31mg/L.
Embodiment 10
Circulating sewage after the coagulating kinetics of front end, which reaches, comes pond 1, and the COD for measuring water is 77mg/L.Come
Water in pond 1 reaches supergravity reactor 6 after pump conveys, feed water flow gauge 3 measures；Gas ozoniferous is occurred by ozone
System 2 is produced, and supergravity reactor 6, ozone concentration 40mg/L are also delivered to after flowmeter and the metering of ozone concentration meter.Control
Gas-liquid flow-rate ratio in supergravity reactor 6 processed is 3.Rotor in supergravity reactor 6 rotates, and forms Elevated Gravity, surpasses
Gravity horizontal G is controlled in 50g.In the case, water and ozone Rapid contact, (liquid stops ozone with pollutant fast reaction
Time is within 1 second), pollutant is degraded.Then, aqueous phase, gas phase are discharged through each outlet respectively, and water goes to discharge bay 5,
Ozone gas discharges after ozone destruct device.Part water in discharge bay 5 is back to supergravity reactor again after metering
6, reflux ratio (return flow account for drain into the totality of discharge bay 5 enter the ratio of flow quantity) control is 0.2.Discharge bay 5 is provided with overflow
Mouthful, confess and arranged outside water, the COD for measuring water outlet is 28mg/L.
Embodiment 11
Circulating sewage after the coagulating kinetics of front end, which reaches, comes pond 1, and the COD for measuring water is 77mg/L.Come
Water in pond 1 reaches supergravity reactor 6 after pump conveys, feed water flow gauge 3 measures；Gas ozoniferous is occurred by ozone
System 2 is produced, and supergravity reactor 6, ozone concentration 40mg/L are also delivered to after flowmeter and the metering of ozone concentration meter.Control
Gas-liquid flow-rate ratio in supergravity reactor 6 processed is 3.Rotor in supergravity reactor 6 rotates, and forms Elevated Gravity, surpasses
Gravity horizontal G is controlled in 50g.In the case, water and ozone Rapid contact, (liquid stops ozone with pollutant fast reaction
Time is within 1 second), pollutant is degraded.Then, aqueous phase, gas phase are discharged through each outlet respectively, and water goes to discharge bay 5,
Ozone gas discharges after ozone destruct device.Part water in discharge bay 5 is back to supergravity reactor again after metering
6, reflux ratio (return flow account for drain into the totality of discharge bay 5 enter the ratio of flow quantity) control is 0.6.Discharge bay 5 is provided with overflow
Mouthful, confess and arranged outside water, the COD for measuring water outlet is 19mg/L.
Embodiment 12
Circulating sewage after the coagulating kinetics of front end, which reaches, comes pond 1, and the COD for measuring water is 77mg/L.Come
Water in pond 1 reaches supergravity reactor 6 after pump conveys, feed water flow gauge 3 measures；Gas ozoniferous is occurred by ozone
System 2 is produced, and supergravity reactor 6, ozone concentration 40mg/L are also delivered to after flowmeter and the metering of ozone concentration meter.Control
Gas-liquid flow-rate ratio in supergravity reactor 6 processed is 3.Rotor in supergravity reactor 6 rotates, and forms Elevated Gravity, surpasses
Gravity horizontal G is controlled in 50g.In the case, water and ozone Rapid contact, (liquid stops ozone with pollutant fast reaction
Time is within 1 second), pollutant is degraded.Then, aqueous phase, gas phase are discharged through each outlet respectively, and water goes to discharge bay 5,
Ozone gas discharges after ozone destruct device.Part water in discharge bay 5 is back to supergravity reactor again after metering
6, reflux ratio (return flow account for drain into the totality of discharge bay 5 enter the ratio of flow quantity) control is 0.8.Discharge bay 5 is provided with overflow
Mouthful, confess and arranged outside water, the COD for measuring water outlet is 17mg/L.
Embodiment 13
Circulating sewage after the coagulating kinetics of front end, which reaches, comes pond 1, and the COD for measuring water is 77mg/L.Make
Ozone processing, gas liquid ratio 3 are carried out to water with traditional Bubbling method, inlet gas ozone concentration is 40mg/L, and water stops contact
Time is 30min, and the COD for measuring water outlet is 21mg/L.
The major parameter and result of embodiment are as shown in table 1 below：
Table 1
As seen from the above embodiment, method and device provided by the invention disclosure satisfy that circulating sewage Treatment for Reuse process
To the demand of COD depth removal technologies.Hypergravity ozone oxidation can make circulating sewage COD be down to 30mg/ by 100mg/L or so
L or so, beneficial to the stable operation of subsequent technique；In the method implementation process, ozone and water time of contact are short, far below traditional handicraft
Dozens of minutes (for example, in order to reach similar effect, traditional Bubbling method ozone process needs to contact 30min), significantly improve
Treatment effeciency, reduce ozone usage, saved operating cost；The procedure of the present invention is simple, continuous operation, and core is set
Standby (supergravity reactor) small volume, take up an area less.
In addition, the present invention solves the COD problem of pretreatment during circulating sewage treatment for reuse, it is subsequent treatment list
First (embrane method) builds good flow condition；The present invention is by controlling a series of important parameters to realize the mesh of blowdown water process
Mark, these parameters are such as gas liquid ratio, ozone concentration, hypergravity level, reflux ratio；The invention also provides realize at sewer
Manage the device needed for target.
It will be understood by those skilled in the art that above example is only exemplary embodiment, in the spirit without departing substantially from the present invention
In the case of scope, a variety of changes can be carried out, replaces and changes.
Claims (10)
1. a kind of method of processing cycle sewer, including：
Water is delivered to supergravity reactor；
Gas ozoniferous will be wrapped and be delivered to the supergravity reactor；
Elevated Gravity is formed in the supergravity reactor, the Elevated Gravity has the horizontal G of hypergravity, so as to carry out
Mass transfer between the water and the bag gas ozoniferous；
Discharge bay is expelled to from the water of supergravity reactor outflow；
Make the part water in the discharge bay be back to the supergravity reactor to be handled again.
2. according to the method for claim 1, wherein, before water is delivered into supergravity reactor, the water is entered
Enter to come pond.
3. the method according to claim 11, wherein, bag gas ozoniferous and institute in the supergravity reactor
The gas-liquid flow-rate ratio of water is stated between 1~5.
4. according to the method for claim 1, wherein, the ozone concentration of the bag gas ozoniferous is in 10~120mg/L
Between.
5. according to the method for claim 4, wherein, the ozone concentration of bag gas ozoniferous 10~60mg/L it
Between.
6. according to the method for claim 1, wherein, the horizontal G of hypergravity is 20~300g, and wherein g is terrestrial gravitation
Acceleration.
7. according to the method for claim 1, wherein, residence time of the water in the supergravity reactor is 1
Within second.
8. according to the method for claim 1, wherein, the reflux ratio of the water outlet in the discharge bay is between 0.2~0.8.
9. a kind of device of processing cycle sewer, including：
Come pond, for storing water；
Ozone generation system, gas ozoniferous is wrapped for generating；
Supergravity reactor, for forming Elevated Gravity, the Elevated Gravity has the horizontal G of hypergravity, so as to carry out institute
State the mass transfer between water and the bag gas ozoniferous；
Discharge bay, for receiving the water outlet from supergravity reactor discharge, and by part effluent recycling to described overweight
Power reactor is handled again.
10. device according to claim 9, in addition to：
First pump, be arranged on it is described come between pond and the supergravity reactor；
Second pump, it is arranged between the discharge bay and the supergravity reactor；
First fluid flowmeter, be arranged on it is described come between pond and the supergravity reactor；
Second liquid flowmeter, it is arranged between the discharge bay and the supergravity reactor；And
Gas flowmeter, it is arranged between the ozone generation system and the supergravity reactor.
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Citations (3)
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| CN104724852A (en) * | 2015-03-03 | 2015-06-24 | 中北大学 | Method and device for stripping, oxidizing and degrading high-concentration nitrobenzene-containing wastewater |
| CN105084518A (en) * | 2015-09-14 | 2015-11-25 | 北京万邦达环保技术股份有限公司 | High-salinity water pretreatment method and device |
| CN204958501U (en) * | 2015-09-14 | 2016-01-13 | 北京万邦达环保技术股份有限公司 | High salt pretreatment of water device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104724852A (en) * | 2015-03-03 | 2015-06-24 | 中北大学 | Method and device for stripping, oxidizing and degrading high-concentration nitrobenzene-containing wastewater |
| CN105084518A (en) * | 2015-09-14 | 2015-11-25 | 北京万邦达环保技术股份有限公司 | High-salinity water pretreatment method and device |
| CN204958501U (en) * | 2015-09-14 | 2016-01-13 | 北京万邦达环保技术股份有限公司 | High salt pretreatment of water device |
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