CN112320884A - Device and method for treating sodium hypochlorite waste liquid - Google Patents
Device and method for treating sodium hypochlorite waste liquid Download PDFInfo
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- CN112320884A CN112320884A CN202011140193.2A CN202011140193A CN112320884A CN 112320884 A CN112320884 A CN 112320884A CN 202011140193 A CN202011140193 A CN 202011140193A CN 112320884 A CN112320884 A CN 112320884A
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- waste liquid
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- 239000007788 liquid Substances 0.000 title claims abstract description 139
- 239000005708 Sodium hypochlorite Substances 0.000 title claims abstract description 88
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 title claims abstract description 88
- 239000002699 waste material Substances 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 91
- 239000000460 chlorine Substances 0.000 claims abstract description 53
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 53
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 48
- 238000007865 diluting Methods 0.000 claims abstract description 25
- 239000003085 diluting agent Substances 0.000 claims abstract description 8
- 230000001678 irradiating effect Effects 0.000 claims abstract description 8
- 230000000903 blocking effect Effects 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 8
- 230000001133 acceleration Effects 0.000 abstract 1
- 230000007246 mechanism Effects 0.000 description 17
- 238000007789 sealing Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 12
- 239000010453 quartz Substances 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 9
- 238000003825 pressing Methods 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 8
- 238000010790 dilution Methods 0.000 description 7
- 239000012895 dilution Substances 0.000 description 7
- 238000003860 storage Methods 0.000 description 6
- -1 chlorine ions Chemical class 0.000 description 5
- 230000000149 penetrating effect Effects 0.000 description 5
- 230000007774 longterm Effects 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000009194 climbing Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000000645 desinfectant Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000006303 photolysis reaction Methods 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
- C02F1/325—Irradiation devices or lamp constructions
-
- 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
- C02F2101/12—Halogens or halogen-containing compounds
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention provides a device and a method for treating sodium hypochlorite waste liquid, comprising the following steps: the device comprises an ultraviolet generating device, a treatment container, a water diluting device and an effective chlorine content detecting device, wherein the ultraviolet generating device is used for irradiating ultraviolet rays in the treatment container, the ultraviolet rays have an obvious acceleration effect on the attenuation of effective chlorine in sodium hypochlorite, the distance between ultraviolet lamp tubes is 20-30cm, a UVC wave band is adopted, the power is 80-120w, and the irradiation time is 75-95 hours; the water diluting device sets up handle one of them side of container, and be used for right handle and pour into the diluent into in the container, through ultraviolet irradiation back, handle 1 cubic meter sodium hypochlorite waste liquid and need 113 cubic meters's water, saved a large amount of water resources. The invention aims to quickly, simply, safely and inexpensively reduce the effective chlorine content in sodium hypochlorite so as to achieve the aim of direct discharge.
Description
Technical Field
The invention relates to the technical field of reducing the content of available chlorine, in particular to a device and a method for treating sodium hypochlorite waste liquid.
Background
The sodium hypochlorite is a yellow green liquid, has strong oxidizing property, belongs to a dangerous class, is commonly used as a disinfectant in the water supply industry, and is taken as a main disinfectant in most small and medium-sized waterworks in Beijing. There is a possibility that the tank, pipeline or equipment may be broken, overflowed, transported and scattered to generate sodium hypochlorite "waste liquid" in the processes of production, storage, transportation and use of sodium hypochlorite. The sodium hypochlorite waste liquid contains a large amount of effective chlorine which is far higher than the municipal sewage discharge standard, so that the sodium hypochlorite waste liquid can not be directly discharged into a municipal sewage system. Therefore, a device capable of disposing the sodium hypochlorite waste liquid is lacked to meet the aim of meeting the emission standard of the sodium hypochlorite waste liquid when the sodium hypochlorite waste liquid is emitted.
Disclosure of Invention
The invention mainly solves the technical problem of quickly, simply, safely and low-cost reduction of the effective chlorine content in the sodium hypochlorite so as to achieve the aim of direct discharge.
The embodiment of the invention provides a device for treating sodium hypochlorite waste liquid, which comprises: the ultraviolet generating device is arranged above the treatment container and is used for irradiating ultraviolet rays in the treatment container; the water diluting device is arranged on one side of the disposal container and is used for injecting a diluent into the disposal container.
Preferably, the ultraviolet generating device includes:
the ultraviolet lamp tubes are fixed on the top of the inner wall of the disposal container, and the distance between the ultraviolet lamp tubes is 20-30 cm; the ultraviolet lamp tube adopts UVC wave band, the power is 80-120w, and the irradiation time is 75-95 hours.
Preferably, the outer wall of the treatment container is provided with a liquid inlet, a liquid outlet and an air pressure balance pipeline, the liquid inlet is connected with a waste liquid introducing pipeline, and the air pressure balance pipeline is vertically positioned on the outer wall of the top end of the treatment container; the liquid inlet is arranged at one end, close to the ultraviolet lamp tube, of the outer wall of the treatment container, and the liquid outlet is arranged at one end, close to the bottom, of the outer wall of the treatment container.
Preferably, the water dilution means comprises:
the reservoir is arranged at one side of the disposal container at intervals and is provided with a water outlet;
the water pump, the cistern with handle the container and pass through the water pump and be connected, the income liquid end of water pump is provided with first water pipe, the other end of first water pipe with the delivery port is connected, the play liquid end of water pump is provided with the second water pipe, the second water pipe the inlet is connected.
Preferably, the available chlorine content detecting means includes:
the effective chlorine tester is connected to the liquid outlet and is used for detecting the treated sodium hypochlorite waste liquid up to the standard.
Preferably, the inside of the air pressure balance pipeline is funnel-shaped, a blocking block is placed in the air pressure balance pipeline, the blocking block is conical, and an air inlet channel is arranged in the middle of the blocking block in a penetrating manner; the funnel-shaped large-diameter end of the air pressure balance pipeline is matched with the large-diameter end of the blocking block, and the funnel-shaped small-diameter end of the air pressure balance pipeline is matched with the small-diameter end of the blocking block.
Preferably, the inner wall of the air inlet channel is hinged with the first baffle; a second baffle is fixed on one surface opposite to the first baffle; the upper surface of the first baffle plate and the lower surface of the second baffle plate are both provided with inclined surfaces, and the inclined surface of the upper surface of the first baffle plate and the inclined surface of the lower surface of the second baffle plate are matched with each other and used for opening or closing the air inlet channel;
the supporting block is arranged on the inner wall of the air inlet channel, the lower end of the supporting block is connected with a first spring, and the other end of the first spring is connected with the upper surface of the first baffle;
and one end of the air pressure balance pipeline, which is far away from the disposal container, is provided with a filter tank.
The invention has the following beneficial effects:
the embodiment of the invention provides a device for treating sodium hypochlorite waste liquid, which comprises: the ultraviolet generating device is arranged above the treatment container and is used for irradiating ultraviolet rays in the treatment container; the ultraviolet lamp tube adopts a UVC wave band, the power is 80w, the irradiation time is 84 hours, and the water diluting device is arranged on one side of the treatment container and is used for injecting a diluent into the treatment container; then, adding a certain amount of water into the treatment container by a water diluting device according to the ratio of the sodium hypochlorite waste liquid to the water of 1:113, and diluting the irradiated sodium hypochlorite waste liquid, thereby quickly, simply, safely and low-cost reducing the effective chlorine content in the sodium hypochlorite; effective chlorine content detection device detects the effective chlorine content in the sodium hypochlorite waste liquid after diluting, discharges the sodium hypochlorite waste liquid up to standard through the liquid outlet to reach the target of direct emission.
The invention also comprises a method for treating the sodium hypochlorite waste liquid by ultraviolet rays, which comprises the following steps:
injecting sodium hypochlorite waste liquid into a disposal container from a liquid inlet;
starting an ultraviolet generating device, and irradiating the sodium hypochlorite waste liquid in the treatment container by using an ultraviolet lamp tube of the ultraviolet generating device;
wherein the distance between the ultraviolet lamp tube and the upper surface of the sodium hypochlorite waste liquid is 20-30 cm; the ultraviolet lamp tube is in UVC wave band, the power of the ultraviolet lamp tube is 80-120W, and the irradiation time of the ultraviolet lamp tube is 75-95 hours;
step three, starting a water diluting device, and injecting diluent into the disposal container by using a water pump of the water diluting device;
fourthly, carrying out effective chlorine determination on the sodium hypochlorite waste liquid in the treatment container by an effective chlorine determination instrument; if the sodium hypochlorite reaches the standard, discharging the sodium hypochlorite waste liquid reaching the standard through a liquid outlet; and if the standard is not met, repeating the steps 1-3.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is a schematic view of the construction of a canister of the present invention;
FIG. 4 is a schematic view of the lifting mechanism of the present invention;
FIG. 5 is a schematic view of a lamp holder according to the present invention;
FIG. 6 is a schematic view of an adjusting linkage of the present invention;
FIG. 7 is a schematic view of the structure of the compression bar of the present invention;
FIG. 8 is a schematic view of the structure of the quartz mask body of the present invention;
the device comprises a treatment container, a 2-ultraviolet lamp tube, a 3-waste liquid introducing pipeline, a 5-liquid inlet, a 6-liquid outlet, a 7-water storage tank, an 8-water pump, a 9-first water pipe, a 10-second water pipe, a 11-water outlet, a 13-air pressure balancing pipeline, a 14-blocking block, a 15-air inlet channel, a 16-supporting block, a 17-first spring, a 18-first baffle, a 19-second baffle and a 21-effective chlorine tester, wherein the treatment container is arranged in a container;
22-a first top block, 23-a rotary table, 24-a first rotating shaft, 25-a second top block, 26-a first opening, 27-an upper cover, 28-a first pipeline, 29-a fourth cavity, 30-a first sealing ball, 31-a third cavity, 32-a second cavity, 33-a second sealing ball, 34-a first guide rod, 35-a second guide rod, 36-a second spring, 37-a first cavity, 38-a second pipeline, 39-a third pipeline, 40-a fixed disc, 41-a limiting block, 42-a mounting disc, 43-a fourth pipeline, 44-a third guide rod, 45-a fifth pipeline,
46-mounting plate, 47-third spring, 48-handle, 49-first connecting rod, 50-second connecting rod, 51-third connecting rod, 52-limit tooth, 53-first connecting plate, 54-first movable groove, 55-fourth spring, 56-second movable groove, 57-fourth connecting rod, 58-second rotating shaft, 59-hook, 60-fifth connecting rod, 61-second connecting plate, 62-hanging ring, 63-third connecting plate, 64-fourth connecting plate, 65-filter tank, 66-adjusting connecting rod, 67-pressing plate, 68-pressing rod, 69-sealing plug, 70-quartz cover body, 71-limiting ring and 72-power line.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
An embodiment of the present invention provides a device for treating sodium hypochlorite waste liquid, as shown in fig. 1, including: an ultraviolet ray generating device, a treatment container 1, a water diluting device and an effective chlorine content detecting device, wherein the ultraviolet ray generating device is arranged above the treatment container and is used for irradiating ultraviolet rays in the treatment container; the water diluting device is arranged on one side of the disposal container and is used for injecting a diluent into the disposal container.
The working principle and the beneficial technical effects of the technical scheme are as follows:
the sodium hypochlorite waste liquid enters the treatment container 1 through the liquid inlet 5, and the ultraviolet generating device irradiates the sodium hypochlorite waste liquid in the treatment container 1 to reduce the effective chlorine content; then, adding a certain amount of water into the treatment container 1 by a water diluting device, and diluting the irradiated sodium hypochlorite waste liquid, thereby quickly, simply, safely and inexpensively reducing the effective chlorine content in the sodium hypochlorite; effective chlorine content detection device detects the effective chlorine content in the sodium hypochlorite waste liquid after diluting, discharges the sodium hypochlorite waste liquid up to standard through liquid outlet 6 to reach the target of direct emission.
In one example, the ultraviolet generating device includes:
the ultraviolet lamp tubes 2 are multiple, the ultraviolet lamp tubes 2 are fixed on the top of the inner wall of the disposal container 1, and the distance between the ultraviolet lamp tubes 2 is 20-30 cm; the ultraviolet lamp tube 2 adopts a UVC wave band, the power is 80-120w, and the irradiation time is 75-95 hours.
The ultraviolet lamp tubes 2 are arranged in the cylindrical quartz cover body and are vertically arranged on the upper top surface of the treatment container 1; and if the volume of the disposal container 1 is more than 1 cubic meter, a stirring device is added, and if the volume of the disposal container is less than 0.6 cubic meter, no stirring device is added.
The inner wall of the treatment container 1 is provided with an anticorrosive coating, and the anticorrosive coating is preferably made of PE or pvdf.
In the actual use process, the power of the ultraviolet lamp tube is preferably 80W, and the irradiation time of the ultraviolet lamp tube is preferably 84 hours; the purposes of energy saving and environmental protection can be realized while effective irradiation is realized;
according to fig. 8, a limiting ring 71 with an annular structure is arranged in the quartz cover body 70, the limiting ring 71 is located inside the quartz cover body 70, a central penetrating part of the limiting ring 71 is used for penetrating through the ultraviolet lamp tube 2, a sealing plug 69 is arranged at an opening end of the quartz cover body 70, a power line 72 penetrates through the sealing plug 69, one end of the power line 72 is connected with the ultraviolet lamp tube 2, and the other end of the power line 72 is connected with a commercial power.
The quartz cover body can realize that the ultraviolet lamp tube is soaked in sodium hypochlorite waste liquid, so that the aim of more effective ultraviolet irradiation is fulfilled; thereby reducing the situation that the sodium hypochlorite waste liquid at the bottom cannot be well treated due to overhigh liquid level in the treatment container.
One side of the sealing plug, which is far away from the quartz cover body, is fixed on the fourth connecting plate, so that the lifting device can drive the fourth connecting plate to move up and down and further drive the ultraviolet lamp tube in the quartz cover body to be lifted or sunk.
The working principle and the beneficial technical effects of the technical scheme are as follows: the ultraviolet lamp tubes 2 irradiate the sodium hypochlorite waste liquid in the treatment container 1, and the attenuation of effective chlorine in the sodium hypochlorite by the ultraviolet irradiation is obviously accelerated. A photochemical decomposition is produced, as follows:
(1)2NaClO＝2NaCl+O2
(2)2NaClO+O2＝NaClO3
compared with the ultraviolet lamp tube 2 which is irradiated by UVC wave band, the UVC has higher attenuation rate than UVA in the back process (when low-efficiency chlorine exists), and is more suitable to be used as an attenuation light source; the uv light source should be selected to be of suitable power, although generally a higher power source will attenuate the available chlorine more rapidly. But too much power may also cause problems with too high a temperature of the waste liquid. The test shows that the power is 80w, and the distance between the lamp tubes is 20-30cm, which is a reasonable and safe scheme. Compared with the scheme of long-term storage, the scheme reduces the available chlorine and accelerates the treatment speed. The scheme can achieve the treatment target by only using 84h, and the long-term storage needs more than 20 d.
In one example, the outer wall of the treatment container 1 is provided with a liquid inlet 5, a liquid outlet 6 and an air pressure balance pipeline 13, the liquid inlet 5 is connected with a waste liquid introducing pipeline 3, and the air pressure balance pipeline 13 is vertically positioned on the outer wall of the top end of the treatment container 1; the liquid inlet 5 is arranged at one end, close to the ultraviolet lamp tube 2, of the outer wall of the treatment container 1, and the liquid outlet 6 is arranged at one end, close to the bottom, of the outer wall of the treatment container 1.
The working principle and the beneficial technical effects of the technical scheme are as follows: the sodium hypochlorite can generate oxygen when being photolyzed, which easily causes the air pressure of the treatment container 1 to be inconsistent with the outside, and the air pressure in the treatment container 1 is balanced with the outside by arranging the air pressure balancing pipeline 13, so that the invention is safer.
In one example, a water dilution apparatus includes:
the water reservoir 7 is arranged at one side of the disposal container 1 at intervals, and the water reservoir 7 is provided with a water outlet 11;
the water pump 8, the cistern 7 with handle container 1 and pass through water pump 8 and be connected, the income liquid end of water pump 8 is provided with first water pipe 9, the other end of first water pipe 9 with delivery port 11 is connected, the play liquid end of water pump 8 is provided with second water pipe 10, second water pipe 10 inlet 5 is connected.
The working principle and the beneficial technical effects of the technical scheme are as follows: after ultraviolet generating device shines, water pump 8 introduces second water pipe 10 from delivery port 11 through first water pipe 9 with the water in the cistern 7, adds through inlet 5 and handles container 1, carries out the water dilution to the sodium hypochlorite waste liquid, and the water resource has been saved to the direct scheme of adding water dilution of this scheme ratio. The scheme needs 113 cubic meters of water for treating 1 cubic meter of sodium hypochlorite waste liquid, and 13755 cubic meters is needed for direct water addition and dilution.
In one example, the available chlorine content detecting device includes:
The working principle and the beneficial technical effects of the technical scheme are as follows: the sodium hypochlorite waste liquid after water dilution is subjected to effective chlorine content detection by an effective chlorine determinator 21 when passing through a liquid outlet 6, and is directly discharged if the effective chlorine content reaches the standard, and the detection link is repeated after treatment if the effective chlorine content does not reach the standard.
In one example, the inside of the air pressure balancing pipe 13 is funnel-shaped, a blocking block 14 is placed in the air pressure balancing pipe 13, the blocking block 14 is conical, and an air inlet channel 15 is arranged in the middle of the blocking block 14 in a penetrating mode; the funnel-shaped large diameter end of the air pressure balance pipeline 13 is matched with the large diameter end of the stop block 14, and the funnel-shaped small diameter end of the air pressure balance pipeline 13 is matched with the small diameter end of the stop block 14.
The working principle and the beneficial technical effects of the technical scheme are as follows: when the internal air pressure of the disposal container 1 is greater than the external air pressure, the air pressure jacks up the blocking block 14 and releases the blocking block to the outside from the periphery of the blocking block through the air pressure balance pipeline 13, so that the internal and external pressures of the disposal container 1 are balanced, and the invention is safer.
In one example, the stop block 14 includes: the first baffle 18 is hinged to the inner wall of the air inlet channel 15; a second baffle plate 19 is fixed on one surface opposite to the first baffle plate 18; the upper surface of the first baffle plate 18 and the lower surface of the second baffle plate 19 are both provided with inclined surfaces, and the inclined surface of the upper surface of the first baffle plate 18 and the inclined surface of the lower surface of the second baffle plate 19 are matched with each other and used for opening or closing the air inlet channel 15;
the supporting block 16 is arranged on the inner wall of the air inlet channel 15, the lower end of the supporting block 16 is connected with a first spring 17, and the other end of the first spring 17 is connected with the upper surface of a first baffle 18;
and a filtering tank is arranged at one end of the air pressure balance pipeline 13 far away from the disposal container 1.
The working principle and the beneficial technical effects of the technical scheme are as follows: when the internal pressure of the treatment container 1 is lower than the external pressure, the external air enters the air inlet channel 15 through the air pressure balancing pipe 13, and the air opens the first baffle 18 downwards through the air pressure, so that the air enters the treatment container 1 for balancing the air pressure. The first spring 17 ensures that the first shutter 18 is in abutment with the second shutter 19 in the normal state, preventing oxygen generated by the photolysis reaction from escaping from the air inlet passage 15. The filter tank 65 is used for collecting the trace amount of free chloride ions escaping from the disposal container in the pressure relief process.
The invention also comprises a method for treating the sodium hypochlorite waste liquid by ultraviolet rays, which comprises the following steps:
injecting sodium hypochlorite waste liquid into a disposal container from a liquid inlet;
starting an ultraviolet generating device, and irradiating the sodium hypochlorite waste liquid in the treatment container by using an ultraviolet lamp tube of the ultraviolet generating device;
wherein the distance between the ultraviolet lamp tube and the upper surface of the sodium hypochlorite waste liquid is 20-30 cm; the ultraviolet lamp tube is in UVC wave band, the power of the ultraviolet lamp tube is 80-120W, and the irradiation time of the ultraviolet lamp tube is 75-95 hours;
step three, starting a water diluting device, and injecting diluent into the disposal container by using a water pump of the water diluting device;
fourthly, carrying out effective chlorine determination on the sodium hypochlorite waste liquid in the treatment container by an effective chlorine determination instrument; if the sodium hypochlorite reaches the standard, discharging the sodium hypochlorite waste liquid reaching the standard through a liquid outlet; and if the standard is not met, repeating the steps 1-3.
The invention also comprises a method for treating the sodium hypochlorite waste liquid by ultraviolet rays, wherein the sodium hypochlorite waste liquid enters the treatment container 1 through the liquid inlet 5, and the ultraviolet ray generating device irradiates the sodium hypochlorite waste liquid in the treatment container 1 to reduce the content of effective chlorine; then, adding a certain amount of water into the treatment container 1 by a water diluting device, and diluting the irradiated sodium hypochlorite waste liquid, thereby quickly, simply, safely and inexpensively reducing the effective chlorine content in the sodium hypochlorite; effective chlorine content detection device detects the effective chlorine content in the sodium hypochlorite waste liquid after diluting, discharges the sodium hypochlorite waste liquid up to standard through liquid outlet 6 to reach the target of direct emission.
The ultraviolet lamp tubes 2 irradiate the sodium hypochlorite waste liquid in the treatment container 1, and the attenuation of effective chlorine in the sodium hypochlorite by the ultraviolet irradiation is obviously accelerated. A photochemical decomposition is produced, as follows:
(1)2NaClO＝2NaCl+O2
(2)2NaClO+O2＝NaClO3
compared with the ultraviolet lamp tube 2 which is irradiated by UVC wave band, the UVC has higher attenuation rate than UVA in the back process (when low-efficiency chlorine exists), and is more suitable to be used as an attenuation light source; the uv light source should be selected to be of suitable power, although generally a higher power source will attenuate the available chlorine more rapidly. But too much power may also cause problems with too high a temperature of the waste liquid. The test shows that the power is 80w, and the distance between the lamp tubes is 20-30cm, which is a reasonable and safe scheme. Compared with the scheme of long-term storage, the scheme reduces the available chlorine and accelerates the treatment speed. The scheme can achieve the treatment target by only using 84h, and the long-term storage needs more than 20 d.
In one embodiment, according to fig. 1-7, the top of the filter tank 65 is provided with an opening, the top opening of the filter tank 65 is provided with an upper cover 27, the upper cover 27 is provided with a first opening 26, the first opening 26 is communicated with one end of the air pressure balancing pipeline far away from the treatment container 1 through a pipeline,
a first rotating shaft 24 is further arranged on the upper cover 27 in a penetrating manner, one end of the first rotating shaft 24, which is positioned inside the filtering tank 65, is connected with a rotating disc 23, one end of the rotating disc 23, which is far away from the first rotating shaft 24, is connected with a second top block 25 with an arc-shaped structure, an adsorption layer is laid at the inner bottom of the filtering tank 65,
the inner bottom of the filter tank 65 is provided with a drainage mechanism for discharging the liquid stored in the filter tank 65.
In this embodiment, the adsorption layer disposed at the bottom inside the filter tank 65 is used for adsorbing a trace amount of free chloride ions or water vapor output by the air pressure balance pipeline; the purpose of collecting the trace free chloride ions or water vapor to the filter tank 65 is achieved, and the adsorption layer can be an activated carbon adsorption layer;
when the device is used, the barrier block is pushed by utilizing high air pressure generated in the disposal container 1, so that the purpose of pressure relief in the disposal container 1 is realized, and meanwhile, the purpose of collecting water vapor or trace free chloride ions generated in the disposal container 1 can be realized; further, the collected water with the trace amount of free chlorine ions is discharged to the disposal container 1 again through the water discharge mechanism, so that the liquid in the disposal container 1 is diluted, the trace amount of free chlorine ions is returned to the disposal container 1 for the second time, and the returned trace amount of free chlorine ions is irradiated again by the ultraviolet lamp 2 to reduce the chlorine content. Thereby realize improving its treatment effeciency to the in-process that the sodium hypochlorite waste liquid was dealt with to and reduce the condition that the free chloride ion of trace appears leaking and causes environmental pollution. One end of the filter tank releases the air pressure in the disposal container 1 through an air pressure balance pipeline 13, and simultaneously collects water vapor and trace free chloride ions existing in the released air pressure; on the other hand, the collected water vapor with the trace free chlorine ions is collected and condensed into liquid with the trace free chlorine ions, and the liquid is reinjected into the disposal container for secondary treatment and the purpose of diluting the sodium hypochlorite solution in the disposal container.
In one embodiment, as shown in fig. 1-7, the drainage mechanism comprises: the filter tank comprises a first guide rod 34, a third guide rod 44, a fourth pipeline 43 and a fifth pipeline 45, wherein the first guide rod 34 is fixed at the inner bottom of the filter tank 65, a first cavity 37 is arranged in the first guide rod 34, and the opening of the first cavity 37 faces the upper cover 27;
the third guide rod 44 is sequentially provided with a first pipeline 28, a fourth cavity 29, a third cavity 31 and a second cavity 32 which are communicated with each other, the second cavity 32 is used for being sleeved at the open end of the first cavity 37 of the first guide rod 34, the open end of the first cavity 37 is provided with a movable second sealing ball 33, and the second sealing ball 33 is used for opening or closing the communication between the first cavity 37 and the second cavity 32;
a first sealing ball 30 is arranged between the second cavity 32 and the third cavity 31, and the first sealing ball 30 is used for opening or closing the communication between the second cavity 32 and the third cavity 31;
a fifth pipeline 45 is communicated with one end of the first pipeline 28, which is far away from the fourth cavity 29, one end of the fifth pipeline 45, which is far away from the fourth cavity 29, penetrates through the third guide rod 44 and extends to the outer wall of the third guide rod 44, one end of the fifth pipeline 45, which is far away from the fourth cavity 29, is of a bent structure, and the bent structure of the fifth pipeline 45 opens towards the inner bottom of the filter tank 65;
the circumferential outer wall of one end, close to the opening of the second cavity 32, of the third guide rod 44 is provided with a mounting disc 42 in an annular structure in an extending manner, a plurality of second guide rods 35 extending upwards are uniformly distributed at the inner bottom of the filter tank 65, the second guide rods 35 are in a T-shaped structure, and the mounting disc 42 is provided with through holes for the second guide rods 35 to penetrate through and reciprocate;
a limiting block 41 protruding upwards is arranged at the inner bottom of the filter tank 65, the upper surface of the limiting block 41 is used for installing a first guide rod 34 and a second guide rod 35 of the drainage mechanism, and a fixed disc 40 is arranged on the lower surface of the limiting block 41;
a second pipeline 38 and a third pipeline 39 which are communicated with each other are arranged in the limiting block 41, one end of the third pipeline 39, which is far away from the second pipeline 38, is used for communicating the treatment container 1, one end of the second pipeline 38, which is far away from the third pipeline 39, is used for communicating a fourth pipeline 43, the fourth pipeline 43 sequentially penetrates through the limiting block 41 and the fixed disk 40 and is communicated with the third pipeline 39, the other end of the fourth pipeline 43 is provided with an opening of a funnel structure, and the opening of the funnel structure is positioned below the fifth pipeline 45;
one end of the third guide rod 44, which is far away from the second cavity 32, is provided with a first top block 22 in a hemispherical structure, and the first top block 22 is in contact with the second top block 25 and the lower surface of the rotating disc 23; the first guide rod 34 is sleeved with a second spring 36, one end of the second spring 36 is connected to the upper surface of the limiting block 41, and the other end of the second spring 36 is connected to the lower surface of the mounting plate 42.
In this embodiment, the drainage mechanism is mainly used for discharging the liquid in the filter tank 65 into the disposal container 1, so as to accelerate the sodium hypochlorite treatment efficiency of the disposal container 1, reduce the water waste caused by water vapor generation, and reduce the leakage of trace free chloride ions.
When the drainage mechanism works, the first rotating shaft 24 is connected with a motor, when the drainage mechanism works, the motor is started to drive the first rotating shaft 24 to rotate, the rotation of the rotary disc 23 is realized after the first rotating shaft 24 rotates, the rotation of the rotary disc 23 drives the second ejector block 25 with an arc-shaped structure to rotate, the second ejector block 25 and the rotary disc 23 are in contact with the first ejector block 22, and if the first ejector block 22 is in contact with the second ejector block 25, the downward movement of the third guide rod 44 is realized; when the third guide rod 44 moves downwards, the mounting plate 42 moves on the second guide rod 35, the second spring 36 is compressed, and the first sealing ball 30 between the fourth cavity 29 and the third cavity 31 moves upwards under the action of negative pressure; after the first top block 22 and the second top block 25 are separated along with the rotation of the first rotating shaft 24, the second spring 36 will bounce the third guide rod 44 upwards, and at this time, the liquid at the bottom inside the filter tank 65 will enter the second cavity 32 and the first cavity 37 along with the gap between the third guide rod 44 and the first guide rod 34, and then the air pressure inside the first cavity 37 will change through the movement of the third guide rod 44, so as to realize the upward movement of the second sealing ball 33 and push the liquid inside the first cavity 37 and the second cavity 32 to the third cavity 31; after the first ejector block 22 and the second ejector block 25 are contacted next time, the third guide rod 44 is repeatedly pressed down, the first sealing ball 30 is communicated with the third cavity 31 and the fourth cavity 29, thereby realizing that the liquid flows to the first pipeline 28 and the fifth pipeline 45 through the fourth cavity 29, the fourth pipeline 43 which is communicated with the lower part of the fifth pipeline 45 and is opened by the funnel structure leads the liquid to the third pipeline 39, then the liquid is communicated to the second pipeline 38 through the third pipeline 39 and finally flows to the disposal container 1 through the second pipeline 38, thereby realize in sodium hypochlorite processing procedure, can enough realize handling the purpose that container 1 carries out the pressure release when inside atmospheric pressure is too big, can also collect trace free chloride ion and steam through the pressure release in-process, retrieve steam and trace free chloride ion after accumulate again and discharge to the purpose of carrying out secondary treatment in handling container 1. Reduce chlorine on the one hand and leak, on the other hand reduces the waste of water resource, and the most important can also improve the dilution purpose of handling sodium hypochlorite in the container 1 through injecting into liquid many times.
In one embodiment, as shown in fig. 1-7, a lifting mechanism is further provided within the disposal container 1, the lifting mechanism comprising: mounting plate 46, first link 49, and first link plate 53;
the two ends of the mounting plate 46 are respectively provided with a second connecting plate 61 which stands upwards, one end of the second connecting plate 61 far away from the mounting plate 46 is respectively connected with the first connecting plates 53 one by one,
the other end of the first connecting plate 53 is used for being fixed on the inner top surface of the disposal container 1, two sides of the first connecting plate 53 are symmetrically provided with limiting teeth 52,
one end of the first connecting rod 49 is connected with the handle 48, the other end of the first connecting rod 49 is provided with a second movable groove 56 with a U-shaped structure, a fifth connecting rod 60 is arranged in the second movable groove 56, and a first movable groove 54 is arranged on the first connecting plate 53 and the second connecting plate 61;
the first movable groove 54 is used for the penetration of a fifth connecting rod 60 and reciprocates in the first movable groove 54;
second rotating shafts 58 are symmetrically arranged on two sides of the fifth connecting rod 60, the second rotating shafts 58 penetrate through the first connecting rod 49, two ends of each second rotating shaft 58 are respectively and rotatably connected with a second connecting rod 50, one end of each second connecting rod 50 far away from the second rotating shaft 58 is connected through a third connecting rod 51, the third connecting rod 51 is clamped on the limiting tooth 52,
a third spring 47 is further arranged between the second connecting rods 50 respectively connected with the two sides of the two second rotating shafts 58, and the fourth spring 55 is arranged at one end of each second connecting rod 50 close to the third connecting rod 51;
a fourth connecting rod 57 is arranged on the inner wall of the opening end of the second movable groove 56, a hook 59 is rotatably arranged on the fourth connecting rod 57, a third spring 47 is arranged on the lower surface of one end of the first connecting rod 49 close to the handle 48, and the other end of the third spring 47 is connected with the mounting plate 46;
the handle 48 is movably connected to one end of an adjusting link 66, and the other end of the adjusting link 66 penetrates through the inner top surface of the treatment container 1 and extends to the outer top surface of the treatment container 1.
The ultraviolet lamp tubes 2 are arranged on a fourth connecting plate 64 at intervals, a third connecting plate 63 is arranged on the upper surface of the fourth connecting plate 64, a hanging ring 62 is arranged at one end, far away from the fourth connecting plate 64, of the third connecting plate 63, and the hanging ring 62 is used for being matched with the hook 59.
The side wall of the handle 48 is connected with a pressing rod 68, one end of the pressing rod 68, which is far away from the handle 48, is provided with a pressing plate 67, and the outlet end of the second pipeline 38 is located on the upper surface of the pressing plate 67.
In this embodiment, the lifting mechanism is mainly used for adjusting the height of the ultraviolet lamp tube 2, so that when the water level in the treatment container 1 rises or falls, the height of the ultraviolet lamp tube 2 can be adjusted, and therefore, the efficiency can be improved in the treatment process of the sodium hypochlorite waste liquid in the treatment container 1, and the purpose of irradiation with the optimized irradiation distance in the ultraviolet irradiation process is achieved.
The lifting mechanism can achieve the purpose of lifting in at least two ways, one way is that the lifting mechanism is operated manually to lift the height of the ultraviolet lamp tube 2 by the adjusting connecting rod 66; the other is that the pressure plate 67 can be driven by water pressure or air pressure in the process of draining water/liquid through the drainage mechanism, so that the purpose of automatically driving the lifting mechanism is achieved.
When the manual operation is used for operating the adjusting connecting rod 66, the adjusting connecting rod 66 is manually pulled, so that the adjusting connecting rod 66 can move up and down, and further, in the process that the handle 48 is driven to move up and down, the second connecting rod 50 and the third connecting rod 51 on two sides of the first connecting plate 53 can alternately climb up on the limiting tooth 52; specifically, in fig. 4, the left third link 51 is arranged on the left limit tooth 52 of the first link plate 53, the right third link 51 is arranged on the right limit tooth 52 of the first link plate 53, and the third link 51 reciprocates up and down through the handle 48, so that the fourth spring 55 is expanded, the two sets of second links 50 alternately swing through the second rotating shaft 58, the first link 49 is driven to ascend, and the hook 59 is further driven to move upwards through the fourth link plate 64 hung on the hanging ring 62. Thereby achieving the purpose of lifting the ultraviolet lamp tube 2 arranged on the fourth connecting plate 64. Therefore, the purpose that the ultraviolet lamp tube 2 can be adjusted according to the liquid level height in the treatment container 1 is achieved, and the situation that the ultraviolet lamp tube 2 is submerged by the liquid in the treatment container 1 is reduced.
When the handle 48 is driven by the pressure plate 67 through hydraulic pressure or pneumatic pressure during the draining process, if the liquid level in the filter tank 65 submerges the open end of the fourth pipeline 43, the liquid is directly drained out to the second pipeline 38 through the open end of the fourth pipeline 43; in this state, when the liquid is discharged, the water pressure is high, and the liquid flows onto the pressure plate 67, the pressure plate 67 is pressed down to press the pressure rod 68, so as to further realize the purpose of pressing the handle 48 downwards, when the water flow of the second pipeline 38 is stopped, the pressure of the handle 48 disappears, the third spring 47 resets the handle 48, and at this time, the handle 48 drives the third connecting rods 51 on both sides of the first connecting plate 53 shown in fig. 4 to alternately move, so as to realize the purpose of climbing; thereby achieving the purpose of lifting the ultraviolet lamp tube 2.
If the third pipeline 39 is not submerged, the liquid in the filter tank 65 is discharged through the drainage mechanism; in the process of discharging the liquid, because the fifth pipeline 45 is not only filled with the liquid but also filled with air pressure in the process of discharging the liquid, the air pressure flows to the pressure plate 67 through the second pipeline 38 along with the pressure of the liquid, the pressure plate 67 is pressed down to realize that the pressure rod 68 carries the handle 48 to press down, and the first connecting rod 49 is restored through the third spring 47 to realize the purpose of climbing on the first connecting plate 53 through the second movable groove 56; thus, the purpose of driving the pressing plate 67 is achieved, the ultraviolet lamp tube 2 is lifted by the lifting device carried by the pressing plate 67, and the situation that the ultraviolet lamp tube 2 is submerged by the liquid in the treatment container 1 is reduced.
When dealing with the sodium hypochlorite liquid level in the container when too high, can also pass through the adjusting rod realizes hoist mechanism falls down, further realizes during the dress can be sent into sodium hypochlorite at the internal ultraviolet tube of quartz cover to the realization carries out the purpose of effectively handling to the sodium hypochlorite waste liquid.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. A device for treating sodium hypochlorite waste liquid is characterized by comprising: the device comprises an ultraviolet generating device, a treatment container (1), a water diluting device and an effective chlorine content detecting device, wherein the ultraviolet generating device is arranged above the treatment container (1) and is used for irradiating ultraviolet rays in the treatment container (1); the water diluting device is arranged on one side of the treatment container (1) and is used for injecting diluent into the treatment container (1).
2. The apparatus for treating sodium hypochlorite waste liquid according to claim 1, wherein the ultraviolet ray generating means comprises:
the ultraviolet lamp tubes (2) are multiple, the ultraviolet lamp tubes (2) are fixed on the top of the inner wall of the disposal container (1), and the distance between the ultraviolet lamp tubes is 20-30 cm; the ultraviolet lamp tube (2) adopts UVC wave band, the power is 80-120w, and the irradiation time is 75-95 hours.
3. The device for treating sodium hypochlorite waste liquid according to claim 1, wherein the outer wall of the treatment container (1) is provided with a liquid inlet (5), a liquid outlet (6) and a pressure balance pipeline (13), the liquid inlet (5) is connected with a waste liquid introducing pipeline (3), and the pressure balance pipeline (13) is vertically positioned on the outer wall of the top end of the treatment container (1); the liquid inlet (5) is arranged at one end, close to the ultraviolet lamp tube (2), of the outer wall of the treatment container (1), and the liquid outlet (6) is arranged at one end, close to the bottom, of the outer wall of the treatment container (1).
4. The apparatus for treating sodium hypochlorite waste liquid according to claim 3, wherein the water diluting means comprises:
the water reservoir (7) is arranged on one side of the disposal container (1) at intervals, and a water outlet (11) is formed in the water reservoir (7);
the water pump (8), cistern (7) with handle container (1) and pass through water pump (8) and connect, the income liquid end of water pump (8) is provided with first water pipe (9), the other end of first water pipe (9) with delivery port (11) are connected, the play liquid end of water pump (8) is provided with second water pipe (10), second water pipe (10) inlet (5) are connected.
5. The apparatus for treating sodium hypochlorite waste liquid according to claim 3, wherein the available chlorine content detecting means comprises:
effective chlorine apparatus (21), effective chlorine apparatus (21) are connected liquid outlet (6) for carry out up to standard detection to the sodium hypochlorite waste liquid after handling.
6. The apparatus for treating sodium hypochlorite waste liquid according to claim 3, further comprising:
the air pressure balance pipeline (13) is funnel-shaped, a blocking block (14) is placed in the air pressure balance pipeline (13), the blocking block (14) is conical, and an air inlet channel (15) penetrates through the middle of the blocking block; the funnel-shaped large-diameter end of the air pressure balance pipeline (13) is matched with the large-diameter end of the blocking block (14), and the funnel-shaped small-diameter end of the air pressure balance pipeline (13) is matched with the small-diameter end of the blocking block (14).
7. The apparatus for treating sodium hypochlorite waste liquid according to claim 6, further comprising:
the inner wall of the air inlet channel (15) is hinged with the first baffle (18); a second baffle (19) is fixed on one surface opposite to the first baffle (18); the upper surface of the first baffle plate (18) and the lower surface of the second baffle plate (19) are both provided with inclined surfaces, and the inclined surface of the upper surface of the first baffle plate (18) and the inclined surface of the lower surface of the second baffle plate (19) are matched with each other and are used for opening or closing the air inlet channel (15);
the supporting block (16) is arranged on the inner wall of the air inlet channel (15), the lower end of the supporting block (16) is connected with a first spring (17), and the other end of the first spring (17) is connected with the upper surface of a first baffle plate (18);
and a filtering tank is arranged at one end of the air pressure balance pipeline (13) far away from the disposal container (1).
8. A method for treating sodium hypochlorite waste liquid by ultraviolet rays, which is suitable for the device for treating sodium hypochlorite waste liquid of any one of claims 1 to 7, and comprises the following steps:
injecting sodium hypochlorite waste liquid into a disposal container from a liquid inlet;
starting an ultraviolet generating device, and irradiating the sodium hypochlorite waste liquid in the treatment container by using an ultraviolet lamp tube of the ultraviolet generating device;
wherein the distance between the ultraviolet lamp tube and the upper surface of the sodium hypochlorite waste liquid is 20-30 cm; the ultraviolet lamp tube is in UVC wave band, the power of the ultraviolet lamp tube is 80-120W, and the irradiation time of the ultraviolet lamp tube is 75-95 hours;
step three, starting a water diluting device, and injecting diluent into the disposal container by using a water pump of the water diluting device;
fourthly, carrying out effective chlorine determination on the sodium hypochlorite waste liquid in the treatment container by an effective chlorine determination instrument; if the sodium hypochlorite reaches the standard, discharging the sodium hypochlorite waste liquid reaching the standard through a liquid outlet; and if the standard is not met, repeating the steps 1-3.
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| CN112320884B (en) | 2022-04-15 |
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