CN102309915B - Device for treating waste gas used on production line of scouring pad - Google Patents
Device for treating waste gas used on production line of scouring pad Download PDFInfo
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- CN102309915B CN102309915B CN 201110242616 CN201110242616A CN102309915B CN 102309915 B CN102309915 B CN 102309915B CN 201110242616 CN201110242616 CN 201110242616 CN 201110242616 A CN201110242616 A CN 201110242616A CN 102309915 B CN102309915 B CN 102309915B
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Abstract
The invention relates to a device for treating waste gas used on a production line of a souring pad to treat the waste gas step by step, which solves the problem that the present waste gas treating device is not suitable for treating the waste gas from the production of the scouring pad. The device comprises a glue-spraying waste gas treatment system which treats the waste gas generated in a glue-spraying process, an oven waste gas treatment system which treats the waste gas generated in an oven process and a waste gas absorption solution treatment system which treats the absorption solution generated from the above two systems, the glue-spraying waste gas treatment system and the oven waste gas treatment system are respectively corresponding to a glue-spraying process and an oven process during the production of the scouring pad, waste gas generated by the two processes is treated by the two systems respectively, so that the treatment effect can be enhanced, the waste gas absorption solution generated in the process of treatment can be treated by the waste gas absorption solution treatment system, so that the treatment effect is good, the treated waste gas meets the national discharge standard.
Description
Technical field
The present invention relates to a kind of controlling device of waste gas, especially a kind of device for treating waste gas used on production line of scouring pad that the waste gas that produces in scouring pad production is carried out step-by-step processing.
Background technology
Scouring pad comprises industrial scouring pad, civilian scouring pad, contains sand scouring pad etc., is widely used in the fields such as decoration, metal sanding and polishing, daily washing.
In the scouring pad production process, main operation comprises glue spraying and oven dry two-step, and this two-step can a large amount of waste gas of discharging in operating process.The waste gas that produces in the glue spraying operation mainly contains a certain amount of particle, and the organic matter such as a small amount of phenol, formaldehyde, and the EGT that produces in baking operation is high, contains the organic matters such as a large amount of phenol, formaldehyde, alcohols and a small amount of particle.
At present, the waste gas that produces in the scouring pad production process produces comparatively serious pollution to ambient atmosphere, also affect the living environment of surrounding resident, but the processing means for this waste gas are not yet arranged, therefore demand a kind of improvement technology of waste gas urgently and process the waste gas that produces in scouring pad production.
The technical staff has also studied the processing means of multiple relevant waste gas, such as:
Patent Office of the People's Republic of China has announced a CN201807278U patent on April 27th, 2011, name is called a kind of Multifunctional integrated mixed waste gas purifying device, exhaust gas flow direction is provided with the charcoal absorption district successively, acid-alkali washing district and unit, three, district of microbial cleaning, in the charcoal absorption district, parallel connection is provided with row's activated carbon adsorption bed, the top in acid-alkali washing district and microbial deodorant district is equipped with nozzle, middle part in the acid-alkali washing district is provided with filler for flower ring, the bottom is circulating absorption solution, the middle part in microbial deodorant district is provided with the volcanic rock biologic packing material, the bottom is the cyclic microorganism absorption liquid, gas outlet at Multifunctional integrated mixed waste gas purifying device is provided with mesh mist eliminator, in the charcoal absorption district one side relative with the acid-alkali washing district, acid-alkali washing district and microbial deodorant district are spaced from each other.Though this device has multiple processing capacity, still do not distinguish the source of waste gas when processing, also can't process absorption liquid simultaneously, not too be fit to the improvement of scouring pad waste gas.
Summary of the invention
The invention solves the defective that emission-control equipment of the prior art is not suitable for being applicable to the improvement of scouring pad waste gas, the device for treating waste gas used on production line of scouring pad that provides a kind of separate sources of the waste gas for producing in scouring pad production to administer respectively.
The purpose of this invention is to provide a kind of device for treating waste gas used on production line of scouring pad that the waste gas that produces in scouring pad production is processed respectively and can be processed simultaneously the absorption liquid in processing procedure.
the technical solution adopted for the present invention to solve the technical problems is: a kind of device for treating waste gas used on production line of scouring pad, comprise the glue spraying exhaust treatment system that the waste gas of glue spraying operation generation is processed, the baking oven exhaust treatment system that the waste gas that the baking oven operation is produced is processed and the waste gas absorption liquid treating system that the absorption liquid that glue spraying exhaust treatment system and baking oven exhaust treatment system produce is processed, the glue spraying exhaust treatment system is distributed with the cyclonic water film deduster that connects successively according to the waste gas course, caustic wash tower and aiutage, the baking oven exhaust treatment system is distributed with at least one caustic wash tower that connects successively according to the waste gas course, water spray column and aiutage, the waste gas absorption liquid treating system comprises the wastewater equalization pond that connects cyclonic water film deduster and caustic wash tower and water spray column, the flotation tank that is connected with wastewater equalization pond, the hydrolysis acidification pool and the sludge-tank that is connected hydrolysis acidification pool that connect flotation tank.The waste gas that produces in the different operations of scouring pad production is processed by each self-corresponding exhaust treatment system, can improve treatment effect and the efficient of waste gas; The waste gas absorption liquid that produces in two exhaust treatment system processing procedures can be processed by the waste gas absorption liquid treating system, has improved the regulation effect of waste gas, makes waste gas reach discharging standards, and absorption liquid also reaches discharging standards through processing simultaneously; Produce the volatile organic matters such as a large amount of particles and a small amount of phenol, formaldehyde in the glue spraying operation, therefore carrying out one step ahead particle removes, can realize by cyclonic water film deduster, remaining volatile organic matter is absorbed by the circulation fluid of caustic wash tower, discharges from aiutage at last; Contain volatile organic matter and a small amount of particles such as more phenol, formaldehyde and isopropyl alcohol in the waste gas that produces in the baking oven operation, remove most of phenol, formaldehyde and isopropyl alcohol by the processing of caustic wash tower several times and decide volatile organic matter and a small amount of particle, absorb remaining volatile organic matter and particle by the water spray column again, discharge from aiutage at last; These two kinds for the treatment of systems are separate, do not interfere with each other, and be all generally to carry out simultaneously when processing waste gas; The waste gas absorption liquid treating system divides qualitative classification by wastewater equalization pond, after flotation tank is processed through a series of materializations, carries out the bioanalysis processing at hydrolysis acidification pool and reaches discharge standard by the sludge-tank separation again, simple to operate, treatment effect is stable, and investment economizes, and management is controlled also more convenient.
As preferably, water inlet and the water outlet of cyclonic water film deduster are connected with circulating water pool by water pipe, and circulating water pool is connected with vertical sedimentation tank, form the water stream channel of a circulation between cyclonic water film deduster, circulating water pool and vertical sedimentation tank.Circulating water pool constantly provides recirculated water to cyclonic water film deduster, and vertical sedimentation tank can be removed the magazine in the recirculated water under cyclonic water film deduster top spray, and again entering into circulation canal is pure recirculated water, improves treatment effect.
As preferably, the top of the caustic wash tower in the glue spraying exhaust treatment system is provided with spraying layer, the bottom is provided with circulating slot, is connected with the alkali cleaning circulating pump between circulating slot and spraying layer, and spraying layer, caustic wash tower are inner, circulating slot and alkali cleaning circulating pump connect into an alkali cleaning circulation fluid circulation closed circuit.Circulating slot becomes the memory unit of alkali cleaning circulation fluid, the place of also become the clarification of alkali cleaning circulation fluid simultaneously, restoring, can again reply vigor through the circulation fluid of circulation in circulating slot, the circulation fluid that guarantees again to enter into the circulation cycle loop also has treatment effect.
As preferably, cyclonic water film deduster is connected with circulating pump, and circulating pump is on the water stream channel in whirlwind pond, and the import department of circulating pump is provided with filter screen; The glue spraying exhaust treatment system also comprises anticorrosion mud efflux pump and anticorrosion mud sludge pump, the water inlet of one termination vertical sedimentation tank of anticorrosion mud efflux pump, another termination circulating water pool, the bottom mud discharging mouth of one termination vertical sedimentation tank of anticorrosion mud sludge pump, the sludge-tank of another termination waste water station.For guaranteeing circulating effect, generally all be provided with water circulating pump on water stream channel, the filter screen that import department arranges increases the clean-up performance of recirculated water; Circulation fluid separates supernatant through means such as precipitations with magazine, system discharges impurity by mud discharging.
As preferably, the caustic wash tower in the baking oven exhaust treatment system is two, is respectively one-level caustic wash tower and secondary caustic wash tower, and the import of secondary caustic wash tower is connected with the outlet of one-level caustic wash tower, and the water spray column is connected with the secondary caustic wash tower.Organic content in baking oven waste gas is more, and one time caustic wash tower can not be completed work for the treatment of, therefore caustic wash tower is divided into two-stage, and the concentration of the absorption liquid that every one-level caustic wash tower produces is also different, and the prerequisite of classification is provided to lower one treatment process of absorption liquid.
As preferably, the water inlet of one-level caustic wash tower is connected circulating water pool with water outlet, be connected with one-level alkali cleaning circulating pump between the top spray layer of one-level caustic wash tower and circulating water pool, be provided with graphite condenser between one-level alkali cleaning circulating pump and top spray layer, graphite condenser is connected with the glass fibre reinforced plastics cooling tower of peripheral hardware; The bottom of the bottom of secondary caustic wash tower and water spray column is respectively arranged with circulating slot, be linked to be closed circuit by water pipe between the circulating slot of secondary caustic wash tower bottom and top spray layer, be provided with secondary alkali cleaning circulating pump on this closed circuit, be linked to be closed circuit by water pipe between the circulating slot of water spray column bottom and the top spray layer of water spray column, be provided with water Sprayer Circulation pump on this closed circuit.Carry a large amount of heats in the waste gas that the baking oven operation produces, if do not say the heat elimination, directly discharging can cause ambient temperature to raise, and can cause the waste of energy, heat absorption can be transformed by graphite condenser, become spendable water vapour or hot water.
As preferably, aiutage is connected with high pressure positive blower, and the front and back of high pressure positive blower respectively are provided with and are flexible coupling and adjusting air valve; The bottom position of each caustic wash tower is connected with automatic medicine adding apparatus, and automatic medicine adding apparatus comprises the pH meter that is connected with the closed circuit of each caustic wash tower outside.Produce pressure by high pressure positive blower and satisfy negative pressure requirement in baking oven, increase pressure difference switch at the high pressure positive blower front end, can also monitor the operation conditions of high pressure positive blower; The alkali cleaning circulation fluid of caustic wash tower inside makes the active ingredient that includes reduce through repeatedly circulation, can realize that by chemicals dosing plant the property retention of circulation fluid is stable, by pH meter more can the Real Time Monitoring circulation fluid situation, facilitate Automatic Dosing.
As preferably, wastewater equalization pond is divided into high-concentration waste water regulating reservoir and low concentration wastewater regulating reservoir, the high-concentration waste water regulating reservoir connects the one-level caustic wash tower in the baking oven exhaust treatment system, cyclonic water film deduster in low concentration wastewater regulating reservoir connection glue spraying exhaust treatment system and secondary caustic wash tower and the water spray column in caustic wash tower and baking oven exhaust treatment system, the bottom of high-concentration waste water regulating reservoir and low concentration wastewater regulating reservoir all is equipped with boring aeration pipe.Divide qualitative classification according to the concentration of absorption liquid, be delivered to respectively high-concentration waste water regulating reservoir and low concentration wastewater regulating reservoir, boring aeration pipe is water quality effectively evenly, prevents contamination precipitation, affects regulating effect.
As preferably, flotation tank is connected with chemicals dosing plant, flotation tank connects the sand tower of corresponding high-concentration waste water regulating reservoir, connect resin absorbing column after sand tower, be connected with the Fenton pond after resin absorbing column, the Fenton pond connects chemicals dosing plant, and Fenton is connected with hydrolysis acidification pool after the pond, and flotation tank is the position straight water receiving solution acidification pool in succession of concentration wastewater equalization pond accordingly.The chemicals dosing plant that connects flotation tank is mainly PAC chemicals dosing plant and PAM chemicals dosing plant, adds PAC and PAM to flotation tank inside, adopts coagulate gas floating process, can effectively remove suspension and with the scum silica frost collection and treatment; The technique of resin absorbing column and Fenton pond coupling can effectively reduce phenol and concentration of formaldehyde in the waste water that enters biochemical system.
As preferably, hang with combined stuffing in hydrolysis acidification pool, the bottom of hydrolysis acidification pool is equipped with micro porous aeration head, hangs with combined stuffing in contact-oxidation pool, and the bottom of contact-oxidation pool is equipped with micro porous aeration head.Reach the effect of even water quality and micro-oxygenation by micropore aeration pipe.
The invention has the beneficial effects as follows: glue spraying operation and baking oven operation in glue spraying exhaust treatment system and the corresponding scouring pad production process of baking oven exhaust treatment system difference, the waste gas that this two procedures produces is processed respectively by this two treatment system, improved treatment effect, the waste gas absorption liquid that produces in processing procedure is simultaneously processed by the waste gas absorption liquid treating system, having completed the safety of the waste gas that produces in the scouring pad production process administers, regulation effect is good, and waste gas after treatment can reach discharging standards.
Description of drawings
Fig. 1 is a kind of structure of block diagram schematic diagram of the present invention;
Fig. 2 is the structural representation of a kind of glue spraying exhaust treatment system of the present invention;
Fig. 3 is the structural representation of a kind of baking oven exhaust treatment system of the present invention;
Fig. 4 is the structural representation of a kind of waste gas absorption liquid treating system of the present invention;
in figure: 001, the glue spraying exhaust treatment system, 002, the waste gas absorption liquid treating system, 003, the baking oven exhaust treatment system, 2, induced duct, 3, cyclonic water film deduster, 4, airduct, 5, caustic wash tower, 6, pH meter, 7, automatic medicine adding apparatus, 8, adjusting air valve, 9, be flexible coupling, 10, aiutage, 11, high pressure positive blower, 12, pressure difference switch, 13, the alkali cleaning circulating pump, 14, medicine storage tank, 15, measuring pump, 16, the discharge switch, 17, the magnetic flap level gauge, 18, the draining motor-driven valve, 19, magnetic valve, 20, anticorrosion mud circulation pump, 21, circulating water pool, 22, anticorrosion mud efflux pump, 23, floating ball lever meter, 24, the electric three-way valve, 25, vertical sedimentation tank, 26, anticorrosion mud sludge pump, 27, the waste water station sludge-tank, 28, cooling tower, 29, tee pipe fitting, 30, graphite condenser, 31, pressure difference transmitter, 32, the one-level caustic wash tower, 33, thermocouple, 34, the secondary caustic wash tower, 35, three grades of water spray columns, 36, water Sprayer Circulation pump, 37, secondary alkali cleaning circulating pump, 38, one-level alkali cleaning circulating pump, 39, clarified water pump, 40, roots blower, 41, the PAC chemicals dosing plant, 42, the PAM chemicals dosing plant, 43, the ferrous sulfate chemicals dosing plant, 44, the watery hydrochloric acid chemicals dosing plant, 45, the hydrogen peroxide chemicals dosing plant, 46, the liquid caustic soda chemicals dosing plant, 47, plate and frame filter press, 48, the mud dedicated pump, 49, the first sludge-tank, 50, the second sludge-tank, 51, elevator pump, 52, intermediate pool, 53, Fenton pond sludge pump, 54, the settling zone, 55, the Fenton pond, 56, second reaction zone, 57, boring aeration pipe, 58, the first reaction zone, 59, resin absorbing column, 60, the second transition tank, 61, sand tower, 62, the First Transition tank, 63, flotation tank, 64, the high-concentration waste water regulating reservoir, 65, the low concentration wastewater regulating reservoir, 66, combined stuffing, 67, micropore aeration pipe, 68, hydrolysis acidification pool, 69, contact-oxidation pool, 70, sludge pump, 71, second pond, 72, the third-order reaction pond, 73, three grades of sedimentation basins, 74, efflux mouth.
The specific embodiment
Below by specific embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment: a kind of device for treating waste gas used on production line of scouring pad (referring to accompanying drawing 1), this device mainly is comprised of three treatment systems, the baking oven exhaust treatment system 003 that the waste gas that be respectively glue spraying exhaust treatment system 001 that waste gas that the glue spraying operation is produced processes, the baking oven operation is produced is processed and the waste gas absorption liquid treating system 002 that the absorption liquid that glue spraying exhaust treatment system and baking oven exhaust treatment system produce is processed.
Glue spraying exhaust treatment system (referring to accompanying drawing 2) is distributed with cyclonic water film deduster 3, caustic wash tower 5 and the aiutage 10 that connects successively according to the waste gas course.The air inlet front end of cyclonic water film deduster is connected with the glue spraying chamber by induced duct 2 and receives the glue spraying waste gas that the glue spraying operation produces, the air outlet of cyclonic water film deduster connects the air inlet of caustic wash tower 5 by airduct 4, the air outlet of caustic wash tower is connected with aiutage by airduct.The water inlet of cyclonic water film deduster is connected with circulating water pool 21 by water pipe with water outlet, is provided with anticorrosion mud circulation pump 20 on the water pipe between the water inlet of circulating water pool and cyclonic water film deduster.Circulating water pool is connected with vertical sedimentation tank 25 by water pipe, is provided with anticorrosion mud efflux pump 22 on the water pipe between circulating water pool and vertical sedimentation tank, is provided with electric three-way valve 24 on the water pipe between anticorrosion mud efflux pump and vertical sedimentation tank.The bottom mud discharging mouth of vertical sedimentation tank is connected with waste water station sludge-tank 27 by water pipe, is provided with anticorrosion mud sludge pump 26 on the water pipe of vertical sedimentation tank bottom mud discharging mouth.Be provided with discharge switch 16 on the water outlet of cyclonic water film deduster and the water pipe between circulating water pool, be provided with floating ball lever meter 23 in circulating water pool, running water forms the water stream channel of a circulation by magnetic valve 19 access circulating water pools between cyclonic water film deduster, circulating water pool and vertical sedimentation tank.
The top of caustic wash tower is provided with spraying layer, and the bottom is provided with circulating slot, and top spray layer water inlet is connected with the bottom cycle groove by water pipe.Be connected with alkali cleaning circulating pump 13 on water pipe between spraying layer and circulating slot, spraying layer, caustic wash tower are inner, circulating slot and alkali cleaning circulating pump connect into an alkali cleaning circulation fluid circulation closed circuit, be provided with discharge switch 16 on water pipe between alkali cleaning circulating pump and spraying layer, caustic wash tower outer setting automatic medicine adding apparatus 7.Automatic medicine adding apparatus comprises pH meter 6, medicine storage tank 14 and measuring pump 15, the electrode of pH meter is arranged on water pipe between alkali cleaning circulating pump delivery port and caustic wash tower top spray layer water inlet, the measuring pump import is connected with medicine storage tank, and the measuring pump outlet is connected with caustic wash tower bottom cycle groove.Caustic wash tower bottom cycle groove arranges magnetic flap level gauge 17, and running water is by magnetic valve 19 access bottom cycle grooves, and the outlet of bottom cycle groove arranges draining motor-driven valve 18.
Be provided with high pressure positive blower 11 on airduct between the air intake of caustic wash tower air-out and aiutage, a pressure difference switch 12 is installed on the airduct between caustic wash tower air-out and high pressure positive blower, the rear and front end of high pressure positive blower is respectively arranged with adjusting air valve 8 and is flexible coupling 9, and the air-out of aiutage directly communicates with atmosphere.
Glue spraying waste gas enters cyclonic water film deduster 3 through advancing induced duct 2, shower water is delivered to cyclonic water film deduster 3 by anticorrosion mud circulation pump 20 in circulating water pool 21, most of particle in waste gas and a small amount of volatile organic matter are after cyclonic water film deduster inside is by the washing of the moisture film of shower water, return circulating water pool 21 by water pipe, the discharge switch 16 of installing on water pipe guarantees that shower water is admitted to cyclonic water film deduster.The shower water that contains particle in circulating water pool is delivered to vertical sedimentation tank 25 continuously by anticorrosion mud efflux pump 22, particle is deposited in vertical sedimentation tank 25 bottom buckets with the form of mud, regularly is expelled to the sludge-tank of waste water station by anticorrosion mud sludge pump 26.According to the time interval of setting, electric three-way valve 24 switches in turn, makes shower water deliver to vertical sedimentation tank or drains into the low concentration wastewater regulating reservoir of waste water station outward.By the monitoring of floating ball lever meter 23, open the magnetic valve of running water, circulating water pool 21 is added water.The waste gas of processing through cyclonic water film deduster enters caustic wash tower 5 by airduct 4, spray liquid by alkali cleaning circulating pump 13 circulating slot at the bottom of the caustic wash tower tower deliver to the top spray layer of caustic wash tower, whether discharge switch 16 monitoring sprays are carrying out.The pH value of pH meter 6 monitoring spray liquids adds alkali lye by measuring pump 15 from medicine storage tank 14, keep the pH of spray liquid greater than 12.According to the time interval of setting, opening water discharge motor-driven valve 18 discharging spray liquids, and change according to the liquid level of magnetic flap level gauge 17 reflections, opens solenoid valve 19 is added running water.Waste gas after the caustic wash tower alkali cleaning; send into 20 meters high aiutage 10 high altitude discharges by high pressure positive blower 11; the pressure difference switch 12 of installing on airduct before high pressure positive blower, normally whether the monitoring high pressure positive blower operation, and aiutage 10 is established fender bracket, sampling platform, cat ladder and lightning arrester.
Baking oven exhaust treatment system (referring to accompanying drawing 3) is distributed with successively the one-level caustic wash tower 32 that connects, secondary caustic wash tower 34, three grades of water spray columns 35 and aiutage 10 according to the waste gas course.The air inlet of one-level caustic wash tower is connected with baking oven by induced duct 2, be provided with pressure difference transmitter 31 on induced duct, the air outlet of one-level caustic wash tower is connected with the air inlet of secondary caustic wash tower by airduct 4, the air outlet of secondary caustic wash tower is connected by the air inlet of airduct with three grades of spray columns, and the air outlet of three grades of spray columns is connected with aiutage by airduct.The water inlet of one-level caustic wash tower is connected with circulating water pool 21 with water outlet, be provided with discharge switch 16 on the water outlet of one-level caustic wash tower and the water pipe between circulating water pool, be connected with one-level alkali cleaning circulating pump 38 and graphite condenser 30 between the water inlet of the water outlet of circulating water pool and one-level caustic wash tower in turn.The water outlet of one-level alkali cleaning circulating pump connects the top water inlet of graphite condenser, and the bottom water outlet of graphite condenser connects the top spray layer of one-level caustic wash tower.Another group water inlet of graphite condenser is connected water pipe and is connected with glass fibre reinforced plastics cooling tower 28 with water outlet, the water inlet of clarified water pump 39 is connected with glass fibre reinforced plastics cooling tower, and the water outlet of clarified water pump 39 is connected with graphite condenser.
One-level caustic wash tower outer setting automatic medicine adding apparatus 7.Automatic medicine adding apparatus 7 comprises pH meter 6, medicine storage tank 14 and measuring pump 15, the electrode of pH meter 14 is arranged on water pipe between the water inlet of one-level alkali cleaning circulating pump water outlet and graphite condenser, the measuring pump import is connected with medicine storage tank, and the measuring pump outlet is connected with one-level caustic wash tower bottom cycle groove.In one-level caustic wash tower circulating water pool, floating ball lever meter 23 is set, running water is by magnetic valve 19 access circulating water pools.A tee pipe fitting 29 is installed on the delivery port of one-level alkali cleaning circulating pump and the water pipe between graphite condenser, and a draining motor-driven valve 18 is installed.A thermocouple 33 is installed on the airduct between the air outlet of one-level caustic wash tower and secondary caustic wash tower 34 air inlets.
The bottom of the bottom of secondary caustic wash tower and water spray column is respectively arranged with circulating slot, is linked to be closed circuit by water pipe between the circulating slot of secondary caustic wash tower bottom and top spray layer.Be provided with secondary alkali cleaning circulating pump 37 on this closed circuit, a termination secondary caustic wash tower top spray layer water inlet of secondary alkali cleaning circulating pump, another termination secondary caustic wash tower bottom cycle groove.Secondary caustic wash tower outer setting automatic medicine adding apparatus 7.Automatic medicine adding apparatus 7 comprises pH meter 6, medicine storage tank 14 and measuring pump 15, the electrode of pH meter 6 is arranged on water pipe between the 34 top spray layers water inlet of 37 water outlets of secondary alkali cleaning circulating pump and secondary caustic wash tower, measuring pump 15 imports are connected with medicine storage tank, and the measuring pump outlet is connected with secondary caustic wash tower bottom cycle groove.Secondary caustic wash tower bottom cycle groove arranges magnetic flap level gauge 17, and running water is by magnetic valve 19 access secondary caustic wash tower bottom cycle grooves.A tee pipe fitting 29 is installed on the water pipe between the water outlet of secondary alkali cleaning circulating pump and secondary caustic wash tower top spray layer, and a draining motor-driven valve 18 is installed.
Be linked to be closed circuit by water pipe between the circulating slot of three grades of water spray columns bottom and the top spray layer of three grades of water spray columns, be provided with water Sprayer Circulation pump 36 on this closed circuit.Three grades of water spray column top spray layer water inlets of one termination of three grades of water Sprayer Circulation pumps, three grades of water spray column bottom cycle grooves of another termination.Be provided with magnetic flap level gauge 17 in three grades of water spray column 35 bottom cycle grooves, running water is by three grades of water spray column bottom cycle grooves of magnetic valve 19 accesses.A tee pipe fitting 29 is installed on the water pipe between the water outlet of three grades of water Sprayer Circulation pumps 36 and three grades of water spray column top spray layers, and a draining motor-driven valve 18 is installed.Be provided with high pressure positive blower 11 between the air-out of three grades of water spray columns and aiutage air intake, a pressure difference switch 12 is installed on the air-out of three grades of water spray columns and the airduct between high pressure positive blower, the rear and front end of high pressure positive blower is respectively arranged with adjusting air valve 8 and is flexible coupling 9, and the air-out of aiutage directly communicates with atmosphere.
Baking oven waste gas is sent into one-level caustic wash tower 32 through induced duct 2, the tube side that spray liquid is sent into graphite condenser 30 by one-level alkali cleaning circulating pump 38 from circulating water pool 21 is cooling, entering the one-level caustic wash tower sprays again, whether discharge switch 16 monitoring sprays are carrying out, and the recirculated cooling water in glass fibre reinforced plastics cooling tower 28 is sent into the spray liquid of the indirect cooling one-level caustic wash tower of shell side of graphite condenser by clarified water pump 39.According to the time interval of setting, open the draining motor-driven valve 18 at 29 places of tee pipe fitting on one-level alkali cleaning circulating pump outlet conduit, discharging one-level alkali cleaning circulation fluid is to the high-concentration waste water regulating reservoir of waste water station, monitoring by floating ball lever meter 23, open the magnetic valve 19 of running water, circulating water pool is added water.The pH value of pH meter 6 monitoring spray liquids adds alkali lye by measuring pump 15 from medicine storage tank 14, keep the pH value greater than 12.Be arranged on the thermocouple 33 on airduct between one-level caustic wash tower and secondary caustic wash tower, the effect of spray in indirect control and supervision one-level caustic wash tower.Waste gas after one-level caustic wash tower cooling spray enters secondary caustic wash tower 34, and the top spray layer that spray liquid is sent into the secondary caustic wash tower by secondary alkali cleaning circulating pump 37 from secondary caustic wash tower bottom cycle groove sprays.The pH value of pH meter monitoring spray liquid adds alkali lye by measuring pump 15 from medicine storage tank 14, keep the pH value greater than 12.According to the time interval of setting, open the draining motor-driven valve 18 at 29 places of tee pipe fitting on secondary alkali cleaning circulating-pump outlet pipeline, discharge secondary alkali cleaning circulation fluid to the low concentration wastewater regulating reservoir of waste water station, and change according to the liquid level of magnetic flap level gauge 17 reflections, opens solenoid valve 19 is added running water.Waste gas after the alkali cleaning of secondary caustic wash tower enters three grades of water spray columns 35, and the top spray layer that shower water is sent into three grades of water spray columns by water Sprayer Circulation pump 36 from three grades of water spray column bottom cycle grooves sprays.According to the time interval of setting, the draining motor-driven valve 18 at tee pipe fitting 29 places on open water Sprayer Circulation pump 36 outlet conduits, discharge water Sprayer Circulation liquid is to the low concentration wastewater regulating reservoir of waste water station, and changes according to the liquid level of magnetic flap level gauge 17 reflections, and opens solenoid valve 19 is added running water.Waste gas after three grades of water spray columns, 35 sprays is sent into the aiutage high altitude discharge of 20 meters high by high pressure positive blower 11, the pressure difference switch 12 of installing on the airduct before high pressure positive blower 11, and normally whether the monitoring high pressure positive blower operation.The pressure difference transmitter of installing on the induced duct of one-level caustic wash tower 32 front ends, the negative pressure value required according to the scouring pad production line come the running frequency of VFC high pressure positive blower.Aiutage is established fender bracket, sampling platform, cat ladder and lightning arrester.
waste gas absorption liquid treating system (referring to accompanying drawing 4) comprises the high-concentration waste water regulating reservoir 64 that connects the one-level caustic wash tower, the low concentration wastewater regulating reservoir 65 that connects cyclonic water film deduster and caustic wash tower and secondary caustic wash tower and three grades of water spray columns, the flotation tank 63 that is connected with the low concentration wastewater regulating reservoir with the high-concentration waste water regulating reservoir, the hydrolysis acidification pool 68 and the contact-oxidation pool 69 that is connected hydrolysis acidification pool that connect flotation tank, the second pond 71 that connects contact-oxidation pool, the third-order reaction pond 73 that connects second pond, three grades of sedimentation basins 73 that connect the third-order reaction pond.
boring aeration pipe 57 is installed in the bottom of high-concentration waste water regulating reservoir 64, be equipped with elevator pump 51, PAC chemicals dosing plant 41 is connected with the elevator pump preceding pipeline, PAM chemicals dosing plant 42 is connected with pipeline after elevator pump, the elevator pump outlet is connected with flotation tank 63 imports, the flotation tank discharge pipeline is connected with the first sludge-tank 49, the flotation tank outlet pipe is connected with First Transition tank 62, First Transition tank 62 arranges elevator pump 51, the elevator pump outlet is connected with sand tower 61 imports, sand tower 61 outlet pipes are connected with the second transition tank 60, sand tower 61 backwash outlet pipes are connected with high-concentration waste water regulating reservoir 64, the second transition tank 60 arranges elevator pump 51, the elevator pump outlet is connected with resin absorbing column 59 imports, the resin absorbing column outlet pipe is connected with Fenton pond 55, resin absorbing column backwash outlet pipe is connected with the high-concentration waste water regulating reservoir, the Fenton pond is by the first reaction zone 58, second reaction zone 56 and settling zone 54 3 parts form, watery hydrochloric acid chemicals dosing plant 44, ferrous sulfate chemicals dosing plant 43 and hydrogen peroxide chemicals dosing plant 45 access the first reaction zones 58, liquid caustic soda chemicals dosing plant 46 access second reaction zones 56, the settling zone outlet pipe is connected with intermediate pool 52.Intermediate pool 52 arranges elevator pump, elevator pump outlet access hydrolysis acidification pool 68.
Boring aeration pipe 57 is installed in low concentration wastewater regulating reservoir 65 bottoms, be equipped with elevator pump 51, PAC chemicals dosing plant 41 is connected with the elevator pump preceding pipeline, PAM chemicals dosing plant 42 is connected with pipeline after elevator pump, the elevator pump outlet is connected with flotation tank 63 imports, the flotation tank discharge pipeline is connected with the second sludge-tank 50, and the flotation tank outlet pipe is connected to hydrolysis acidification pool 68.
There is through hole to be connected with contact-oxidation pool 69 bottom installation micro porous aeration head 67 at the bottom of the pond of hydrolysis acidification pool 68, extension combined stuffing 66 in the pond, pool wall.Micro porous aeration head 67 is installed at the bottom of the pond of contact-oxidation pool 69, hang combined stuffing 66 in the pond, outlet is provided with downflow weir, outlet pipe is connected with the central tube of second pond 71, second pond is the vertical sedimentation basin structure, the second pond bottom arranges sludge bucket and discharge pipeline is installed, and discharge pipeline stretches out outside the pond and is connected with sludge pump 70 imports, and sludge pump 70 export pipelines are connected to respectively hydrolysis acidification pool 68 and the second sludge-tank 50.Second pond 71 outlets arrange downflow weir, outlet pipe is connected with third-order reaction pond 72, boring aeration pipe is installed in the bottom in third-order reaction pond 72, outlet pipe is connected with the central tube of three grades of sedimentation basins 73, three grades of sedimentation basins are the vertical sedimentation basin structure, the bottom arranges bucket and discharge pipeline is installed, and the discharge pipeline other end is connected to the second sludge-tank.
The first sludge-tank 49 bottoms arrange bucket and discharge pipeline, and the discharge pipeline outlet is connected with 48 imports of mud dedicated pump, and the mud dedicated pump arranges return duct, and outlet is connected with the charging aperture of plate and frame filter press 47, and the pressing filtering liquid delivery pipe accesses high-concentration waste water regulating reservoir 64.Bucket and discharge pipeline are set bottom the second sludge-tank, and the discharge pipeline outlet is connected with 48 imports of mud dedicated pump, and the mud dedicated pump arranges return duct, and outlet is connected with the charging aperture of plate and frame filter press 47, pressing filtering liquid delivery pipe access low concentration wastewater regulating reservoir 65.
the interior waste water of high-concentration waste water regulating reservoir 64 is delivered to flotation tank 63 by elevator pump 51, and first sludge-tank 49, water outlet flow to First Transition tank 62, deliver to sand tower 61 to remove impurity by elevator pump 51, water outlet flow to the second transition tank 60, deliver to resin absorbing column 59 by elevator pump, most phenol in waste water is removed in suction-operated by macroreticular resin, water outlet flow to Fenton pond 55, the first reaction zone and second reaction zone to the Fenton pond add the Fenton medicament, by the advanced oxidation effect, larger molecular organics open loop chain rupture is decomposed into small organic molecule and effectively removes formaldehyde, then carry out mud-water separation in the settling zone 54 in Fenton pond, mud enters the first sludge-tank 49, water outlet flow to intermediate pool 52, for subsequent treatment provides the stable water yield and hydraulic pressure, intermediate pool 52 waste water are delivered to hydrolysis acidification pool 68 by elevator pump.
The interior waste water of low concentration wastewater regulating reservoir 65 is delivered to flotation tank 63 by elevator pump 51, and adds the PAC medicament and the PAM medicament plays coagulation, removes suspension and a small amount of COD in water, and scum silica frost enters the second sludge-tank 50, and water outlet flow to hydrolysis acidification pool 68.
The interior extension combined stuffing 66 of hydrolysis acidification pool 68, micro porous aeration head 67 is installed in the bottom, play by little aeration and stir and the evenly effect of water quality, under the effect of hydrolysis acidification bacterium, in waste water, the larger molecular organics of difficult degradation flows into contact-oxidation pool 69 after being broken down into the small organic molecule of easy degraded, the interior extension combined stuffing 66 of contact-oxidation pool 69, micro porous aeration head 67 is installed in the bottom, by roots blower 40 oxygen supply in the contact-oxidation pool, under the effect of aerobic bacteria, organic matter is decomposed, and COD is effectively removed.Contact-oxidation pool 69 water outlets flow to second pond 71, second pond 71 is the vertical sedimentation basin structure, after mud-water separation, the part sludge reflux is to hydrolysis acidification pool 68, excess sludge enters the second sludge-tank 50, supernatant flow to third-order reaction pond 72, in third-order reaction pond 72, according to the water quality situation, take the circumstances into consideration to add flocculant PAC medicament, water outlet flow to three grades of sedimentation basins 73, three grades of sedimentation basins 73 are the vertical sedimentation basin structure, after mud-water separation, mud enters the second sludge-tank 50, and supernatant is flowed through and effluxed mouthful 74 qualified discharges.
The first interior mud of sludge-tank 49 is delivered to plate and frame filter press 47 via mud dedicated pump 48 and is carried out press filtration, and pressing filtering liquid enters high-concentration waste water regulating reservoir 64.The second interior mud of sludge-tank 50 is delivered to plate and frame filter press 47 via mud dedicated pump 48 and is carried out press filtration, and pressing filtering liquid enters low concentration wastewater regulating reservoir 65.
Above-described embodiment is a kind of preferred version of the present invention, is not the present invention is done any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technical scheme that claim puts down in writing.
Claims (10)
1. device for treating waste gas used on production line of scouring pad, it is characterized in that comprising the glue spraying exhaust treatment system that the waste gas of glue spraying operation generation is processed, the baking oven exhaust treatment system that the waste gas that the baking oven operation is produced is processed and the waste gas absorption liquid treating system that the absorption liquid that glue spraying exhaust treatment system and baking oven exhaust treatment system produce is processed, the glue spraying exhaust treatment system is distributed with the cyclonic water film deduster that connects successively according to the waste gas course, caustic wash tower and aiutage, the baking oven exhaust treatment system is distributed with at least one caustic wash tower that connects successively according to the waste gas course, water spray column and aiutage, the waste gas absorption liquid treating system comprises the wastewater equalization pond that connects cyclonic water film deduster and caustic wash tower and water spray column, the flotation tank that is connected with wastewater equalization pond, the hydrolysis acidification pool and the sludge-tank that is connected hydrolysis acidification pool that connect flotation tank.
2. device for treating waste gas used on production line of scouring pad according to claim 1, the water inlet and the water outlet that it is characterized in that cyclonic water film deduster are connected with circulating water pool by water pipe, circulating water pool is connected with vertical sedimentation tank, forms the water stream channel of a circulation between cyclonic water film deduster, circulating water pool and vertical sedimentation tank.
3. device for treating waste gas used on production line of scouring pad according to claim 1, the top that it is characterized in that the caustic wash tower in the glue spraying exhaust treatment system is provided with spraying layer, the bottom is provided with circulating slot, be connected with the alkali cleaning circulating pump between circulating slot and spraying layer, spraying layer, caustic wash tower are inner, circulating slot and alkali cleaning circulating pump connect into an alkali cleaning circulation fluid circulation closed circuit.
4. according to claim 1 and 2 or 3 described device for treating waste gas used on production line of scouring pads, is characterized in that cyclonic water film deduster is connected with circulating pump, and circulating pump is on the water stream channel in whirlwind pond, and the import department of circulating pump is provided with filter screen; The glue spraying exhaust treatment system also comprises anticorrosion mud efflux pump and anticorrosion mud sludge pump, the water inlet of one termination vertical sedimentation tank of anticorrosion mud efflux pump, another termination circulating water pool, the bottom mud discharging mouth of one termination vertical sedimentation tank of anticorrosion mud sludge pump, the sludge-tank of another termination waste water station.
5. device for treating waste gas used on production line of scouring pad according to claim 1, it is characterized in that the caustic wash tower in the baking oven exhaust treatment system is two, be respectively one-level caustic wash tower and secondary caustic wash tower, the import of secondary caustic wash tower is connected with the outlet of one-level caustic wash tower, and the water spray column is connected with the secondary caustic wash tower.
6. device for treating waste gas used on production line of scouring pad according to claim 5, the water inlet that it is characterized in that the one-level caustic wash tower is connected circulating water pool with water outlet, be connected with one-level alkali cleaning circulating pump between the top spray layer of one-level caustic wash tower and circulating water pool, be provided with graphite condenser between one-level alkali cleaning circulating pump and top spray layer, graphite condenser is connected with the glass fibre reinforced plastics cooling tower of peripheral hardware; The bottom of the bottom of secondary caustic wash tower and water spray column is respectively arranged with circulating slot, be linked to be closed circuit by water pipe between the circulating slot of secondary caustic wash tower bottom and top spray layer, be provided with secondary alkali cleaning circulating pump on this closed circuit, be linked to be closed circuit by water pipe between the circulating slot of water spray column bottom and the top spray layer of water spray column, be provided with water Sprayer Circulation pump on this closed circuit.
7. according to claim 1 and 2 or 3 or 5 or 6 described device for treating waste gas used on production line of scouring pads, it is characterized in that the aiutage in glue spraying exhaust treatment system and baking oven exhaust treatment system is connected with high pressure positive blower, the front and back of high pressure positive blower respectively are provided with and are flexible coupling and adjusting air valve; The bottom position of each caustic wash tower is connected with automatic medicine adding apparatus, and automatic medicine adding apparatus comprises the pH meter that is connected with the closed circuit of each caustic wash tower outside.
8. device for treating waste gas used on production line of scouring pad according to claim 5, it is characterized in that wastewater equalization pond is divided into high-concentration waste water regulating reservoir and low concentration wastewater regulating reservoir, the high-concentration waste water regulating reservoir connects the one-level caustic wash tower in the baking oven exhaust treatment system, cyclonic water film deduster in low concentration wastewater regulating reservoir connection glue spraying exhaust treatment system and secondary caustic wash tower and the water spray column in caustic wash tower and baking oven exhaust treatment system, the bottom of high-concentration waste water regulating reservoir and low concentration wastewater regulating reservoir all is equipped with boring aeration pipe.
9. device for treating waste gas used on production line of scouring pad according to claim 8, it is characterized in that flotation tank is connected with chemicals dosing plant, flotation tank connects the sand tower of corresponding high-concentration waste water regulating reservoir, connect resin absorbing column after sand tower, be connected with the Fenton pond after resin absorbing column, the Fenton pond connects chemicals dosing plant, and Fenton is connected with hydrolysis acidification pool after the pond, and flotation tank is the position straight water receiving solution acidification pool in succession of concentration wastewater equalization pond accordingly.
10. according to claim 1 and 2 or 3 or 5 described device for treating waste gas used on production line of scouring pads, it is characterized in that hanging with in hydrolysis acidification pool combined stuffing, the bottom of hydrolysis acidification pool is equipped with micro porous aeration head, there is through hole to be connected with contact-oxidation pool bottom the pool wall of hydrolysis acidification pool, hang with combined stuffing in contact-oxidation pool, the bottom of contact-oxidation pool is equipped with micro porous aeration head.
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| CN103203155B (en) * | 2013-05-03 | 2015-09-16 | 杜广智 | A kind of electric furnace secondary aluminium melting exhaust-gas treatment production line |
| CN105233648A (en) * | 2015-09-21 | 2016-01-13 | 江苏南方涂装环保股份有限公司 | Waste gas purifying treatment technology for reusing internal circulation solution |
| CN105597535B (en) * | 2016-03-29 | 2018-01-19 | 南京工业大学 | Method for treating mixed organic waste gas containing chlorine, hydrogen chloride and oxynitride |
| CN105817105A (en) * | 2016-05-09 | 2016-08-03 | 池州大自然环保工程有限公司 | Dust and smoke processing system |
| CN106430862B (en) * | 2016-12-13 | 2023-04-07 | 大庆市海油庆石油科技有限公司 | Oil extraction wastewater treatment device integrating settling tank, biology and dissolved air floatation |
| CN107413149A (en) * | 2017-06-26 | 2017-12-01 | 哥乐巴环保科技(上海)有限公司 | A kind of MDF dries the modified technique and processing system of tail gas biochemical processing method |
| CN109453596A (en) * | 2018-11-30 | 2019-03-12 | 四川安宁铁钛股份有限公司 | Dry and wet joint inhibits dust and sulfur dioxide system in ilmenite concentrate drying flue gas |
| CN110759589A (en) * | 2019-10-21 | 2020-02-07 | 南京林业大学 | Treatment method for treating sewage-containing wastewater by artificial board fiber drying tail gas |
| CN113144798A (en) * | 2020-12-24 | 2021-07-23 | 哥乐巴环保科技(上海)有限公司 | Shaving board drying tail gas treatment process |
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| CN201091817Y (en) * | 2007-07-30 | 2008-07-30 | 黄高英 | Off-gases disposal device |
| CN101185828B (en) * | 2007-09-03 | 2010-10-27 | 上虞市玻璃纸有限公司 | Waste gas treatment method in glassine production process |
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