CN215667460U - Zero release processing system of waste water cyclic utilization that contains acid and lead - Google Patents
Zero release processing system of waste water cyclic utilization that contains acid and lead Download PDFInfo
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- CN215667460U CN215667460U CN202121212054.6U CN202121212054U CN215667460U CN 215667460 U CN215667460 U CN 215667460U CN 202121212054 U CN202121212054 U CN 202121212054U CN 215667460 U CN215667460 U CN 215667460U
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Abstract
The utility model discloses a zero-emission treatment system for recycling acid-lead-containing wastewater, which comprises a collecting unit, a neutralization reaction unit, a separating unit, a liquid treatment unit and a solid treatment unit, wherein the collecting unit, the neutralization reaction unit and the separating unit are sequentially connected, the separating unit comprises an inclined tube sedimentation tank for primarily separating liquid and sludge and a waste acid filter press for secondarily separating the primarily separated sludge, the liquid and semisolid separated by the inclined tube sedimentation tank are respectively connected with the liquid treatment unit and the waste acid filter press, and the liquid and solid separated by the waste acid filter press are respectively connected with the liquid treatment unit and the solid treatment unit. The system prepares recycled reclaimed water from liquid waste, the reclaimed water recycling water yield is more than or equal to 70 percent, the desalination rate is more than or equal to 97 percent, the solid waste is treated by the smelting furnace, the purification rate of the lead content and the acid content after the treatment of the treatment system reaches more than 99 percent, and the environmental protection benefit is obviously improved.
Description
Technical Field
The utility model belongs to the technical field of wastewater treatment, and particularly relates to a zero-discharge treatment system for recycling acid-lead-containing wastewater.
Background
The prior treatment methods of the wastewater containing acid and lead are mainly summarized into three types: chemical, physical and biological methods. The chemical method is the most commonly used method in the current sewage treatment, however, the sewage treated by the method also needs to be treated by intermediate water, pure water and high-salt wastewater are formed after the intermediate water is treated, the high-salt wastewater is difficult to treat, secondary pollution is easy to form, the adsorbent plays an important role in the process, and the adsorption effects of different adsorbents on heavy metal ions are greatly different. At present, common adsorbents such as activated carbon, zeolite, silica gel resin, chelating resin and the like are widely applied, but the treatment effect of the adsorbents on lead and acid is not ideal, and a wastewater treatment unit needs to additionally use a large amount of chemical raw materials such as industrial caustic soda flakes and the like for secondary treatment, so that the treatment cost is increased, and meanwhile, certain environmental hazards are caused. In view of the above problems, there is a need for a zero-discharge treatment system for effectively treating wastewater containing lead and acid and improving recycling efficiency.
Accordingly, further developments and improvements are still needed in the art.
SUMMERY OF THE UTILITY MODEL
Aiming at various defects in the prior art, in order to solve the problems, a zero-emission treatment system for recycling the wastewater containing acid and lead is provided. The utility model provides the following technical scheme:
a zero-emission treatment system for recycling waste water containing acid and lead comprises a collecting unit for collecting and primarily filtering sewage water with different concentrations, a neutralization reaction unit for neutralizing the collected sewage water, a separation unit for separating neutralized sludge and sewage, a liquid treatment unit and a solid treatment unit for treating recovered liquid and solid respectively, the collecting unit, the neutralization reaction unit and the separation unit are connected in sequence, the separation unit comprises an inclined tube sedimentation tank for primarily separating liquid and sludge and a waste acid filter press for secondarily separating the primarily separated sludge, the liquid and the semisolid separated from the inclined tube sedimentation tank are respectively connected with a liquid treatment unit and a waste acid filter press, and the liquid and the solid separated by the waste acid filter press are respectively connected with the liquid treatment unit and the solid treatment unit.
Further, the neutralization reaction unit comprises a plurality of mutually independent neutralization reaction tanks, the feed end of each neutralization reaction tank is connected with the collection unit and the alkaline medicament unit, the alkaline medicament unit comprises a soot dissolution tank and/or a lime milk stirring tank, and the discharge end of each neutralization reaction tank is connected with the separation unit.
Furthermore, the number of the neutralization reaction tanks is three, and each neutralization reaction tank is internally provided with a hydraulic stirring device.
Furthermore, the liquid processing unit includes the mixed liquid adjusting tank that is used for collecting and adjusting clear liquid acidity, an alkali lye input device that is used for adding alkali lye to the mixed liquid adjusting tank, a filtration unit that is used for carrying out multi-stage filtration to the liquid in the mixed liquid adjusting tank and a reclaimed water reservoir that collects the liquid after the filtration of the filtration unit, the alkali lye input device output is connected with the input of mixed liquid adjusting tank, the output of mixed liquid adjusting tank is connected with the input of filtration unit, and the input of reclaimed water reservoir is connected to the output of filtration unit.
Furthermore, the filtration unit comprises a multi-media filter, an activated carbon filter, a resin softener, an ultrafiltration device, a security filter, a nanofiltration device, a reverse osmosis device and a mixed bed device, wherein the output end of the mixed liquid regulating tank is connected with the input end of the multi-media filter, the output end of the multi-media filter is connected with the input end of the activated carbon filter, the output end of the activated carbon filter is connected with the input end of the resin softener, the output end of the resin softener is connected with the input end of the ultrafiltration device, the output end of the ultrafiltration device is connected with the input end of the security filter, the output end of the security filter is connected with the input end of the nanofiltration device, the output end of the nanofiltration device is connected with the reverse osmosis device, and the output end of the reverse osmosis device is respectively connected with the input ends of the nanofiltration device and the mixed bed device.
Furthermore, the output end of the nanofiltration device is also connected with the input end of a concentrated water tank, the output end of the concentrated water tank is connected with a triple-effect evaporator for concentrating and separating concentrated water, the output end of the triple-effect evaporator is respectively connected with a condensation water tank and a solid treatment unit, and the output end of the condensation water tank is connected with the input end of a mixed liquid adjusting tank.
Furthermore, the semi-solid output end of the inclined tube sedimentation tank is connected with the input end of a sludge tank, the output end of the sludge tank is connected with the input end of a waste acid filter press, and the liquid input end of the waste acid filter press is connected with the input end of a mixed liquid adjusting tank.
Furthermore, the cleaning input ends of the multi-media filter, the activated carbon filter, the resin softener and the ultrafiltration device are all connected with a backwashing water cleaning device, and the cleaning output ends of the multi-media filter, the activated carbon filter, the resin softener and the ultrafiltration device are connected with the input end of the sludge tank.
Furthermore, the cleaning input ends of the nanofiltration device and the reverse osmosis device are respectively connected with a nanofiltration cleaning device and a reverse osmosis cleaning device.
Further, the solid treatment unit comprises a smelting furnace for treating solid waste, and the collecting unit comprises a waste acid water collecting tank and a acid collecting pipeline.
Has the advantages that:
1. three sets of neutralization reaction tanks are arranged for alternate use and intermittently run to ensure the full reaction;
2. a hydraulic stirring device matched with the neutralization reaction tank is used for stirring the neutralization reaction, so that the neutralization reaction is ensured to be full, the medicament is reacted completely, and the reaction efficiency is improved;
3. the system prepares recycled reclaimed water from liquid waste, the reclaimed water recycling water yield is more than or equal to 70 percent, the desalination rate is more than or equal to 97 percent, and the purification rate of lead content and acid content of solid waste treated by the treatment system reaches more than 99 percent after the solid waste is treated by the smelting furnace.
Drawings
FIG. 1 is a schematic structural diagram of a zero-emission treatment system for recycling lead-containing wastewater according to an embodiment of the present invention;
in the drawings: 100. a collection unit; 200. a neutralization reaction unit; 300. a separation unit; 400. a liquid treatment unit; 410. a filtration unit; 500. a solids processing unit.
Detailed Description
In order to make the technical solutions of the present invention better understood, the following description of the technical solutions of the present invention with reference to the accompanying drawings of the present invention is made clearly and completely, and other similar embodiments obtained by a person of ordinary skill in the art without any creative effort based on the embodiments in the present application shall fall within the protection scope of the present application. In addition, directional terms such as "upper", "lower", "left", "right", etc. in the following embodiments are directions with reference to the drawings only, and thus, the directional terms are used for illustrating the present invention and not for limiting the present invention.
As shown in FIG. 1, a zero-emission treatment system for recycling wastewater containing acid and lead comprises a collecting unit 100 for collecting and primarily filtering polluted acid water with different concentrations, a neutralization reaction unit 200 for neutralizing the collected polluted acid water, a separating unit 300 for separating neutralized sludge and polluted liquid, a liquid treatment unit 400 and a solid treatment unit 500 for treating recovered liquid and solid respectively, the collecting unit 100, the neutralization reaction unit 200 and the separation unit 300 are connected in sequence, the separation unit 300 includes an inclined tube settling tank for primarily separating liquid and sludge and a waste acid filter press for secondarily separating the primarily separated sludge, the liquid and the semi-solid separated from the inclined tube sedimentation tank are respectively connected with a liquid processing unit 400 and a waste acid filter press, the liquid and the solid separated by the waste acid filter press are respectively connected with the liquid treatment unit 400 and the solid treatment unit 500.
Further, the neutralization reaction unit 200 comprises a plurality of mutually independent neutralization reaction tanks, the feed end of each neutralization reaction tank is connected with the collection unit 100 and the alkaline chemical unit, the alkaline chemical unit comprises a soot dissolution tank and/or a lime milk stirring tank, and the discharge end of each neutralization reaction tank is connected with the separation unit 300.
Furthermore, the number of the neutralization reaction tanks is three, and each neutralization reaction tank is internally provided with a hydraulic stirring device.
Further, the liquid processing unit 400 includes a mixed liquid adjusting tank for collecting and adjusting the acidity of the clear liquid, an alkali liquor feeding device for adding alkali liquor into the mixed liquid adjusting tank, a filtering unit 410 for performing multi-stage filtration on the liquid in the mixed liquid adjusting tank, and a reclaimed water reservoir for collecting the liquid filtered by the filtering unit 410, wherein an output end of the alkali liquor feeding device is connected with an input end of the mixed liquid adjusting tank, an output end of the mixed liquid adjusting tank is connected with an input end of the filtering unit 410, and an output end of the filtering unit 410 is connected with an input end of the reclaimed water reservoir.
Further, the filtering unit 410 includes a multi-media filter, an activated carbon filter, a resin softener, an ultrafiltration device, a safety filter, a nanofiltration device, a reverse osmosis device and a mixed bed device, the output end of the mixed liquid adjusting tank is connected with the input end of the multi-media filter, the output end of the multi-media filter is connected with the input end of the activated carbon filter, the output end of the activated carbon filter is connected with the input end of the resin softener, the output end of the resin softener is connected with the input end of the ultrafiltration device, the output end of the ultrafiltration device is connected with the input end of the safety filter, the output end of the safety filter is connected with the input end of the nanofiltration device, the output end of the nanofiltration device is connected with the reverse osmosis device, and the output end of the reverse osmosis device is respectively connected with the input ends of the nanofiltration device and the mixed bed device.
Furthermore, the output end of the nanofiltration device is also connected with the input end of a concentrated water tank, the output end of the concentrated water tank is connected with a triple-effect evaporator for concentrating and separating concentrated water, the output end of the triple-effect evaporator is respectively connected with a condensate water tank and a solid treatment unit 500, and the output end of the condensate water tank is connected with the input end of a mixed liquid adjusting tank.
Furthermore, the semi-solid output end of the inclined tube sedimentation tank is connected with the input end of a sludge tank, the output end of the sludge tank is connected with the input end of a waste acid filter press, and the liquid input end of the waste acid filter press is connected with the input end of a mixed liquid adjusting tank.
Furthermore, the cleaning input ends of the multi-media filter, the activated carbon filter, the resin softener and the ultrafiltration device are all connected with a backwashing water cleaning device, and the cleaning output ends of the multi-media filter, the activated carbon filter, the resin softener and the ultrafiltration device are connected with the input end of the sludge tank.
Furthermore, the cleaning input ends of the nanofiltration device and the reverse osmosis device are respectively connected with a nanofiltration cleaning device and a reverse osmosis cleaning device.
Further, the solid treatment unit 500 includes a smelting furnace for treating solid wastes, and the collection unit 100 includes a contaminated acid water collection tank and a concentrated acid pipeline.
Dirty sour water collecting tank is gone into to dirty sour collection of acid pipe way collection dirty acid, because dirty sour has two kinds of concentrations, sets up the regulation homogenization that the acid vat can play sour liquid measure, different acidity, guarantees the equilibrium, the stability of follow-up processing system volume, quality. The end part of the acid collecting pipeline is provided with a coarse filter screen for primarily filtering large-particle impurities. Dirty sour water collecting pit passes through in the sour elevator pump goes into neutralization reaction jar, and is preferred, sets up liquid level controller in dirty sour water collecting pit, divides high liquid level, well liquid level and the three liquid level of low liquid level, sends the work operation of signal control pump to electrical control system through liquid level controller, and wherein, low liquid level protection pump, well liquid level start-up pump, high liquid level are the warning liquid level. The ash dissolving tank and/or the lime milk stirring tank of the alkaline agent unit pump the agent to the neutralization reaction tank through the agent lifting pump, the neutralization cost can be greatly reduced by using the ash and the limestone as the neutralization agent, and the ash is secondarily utilized as a combustion byproduct, so that the environment-friendly and energy-saving concept is met. Set up three sets of neutralization reaction jars and use by turns, intermittent type operation ensures going on fully of reaction, and dirty sour waste liquid and neutralization reagent cigarette ash, limestone emulsion take place quick neutralization reaction in jar, and in order to guarantee that neutralization reaction is abundant, the medicament reaction is complete, and supporting water conservancy agitating unit centering and reaction are stirred in the neutralization reaction jar, improve reaction efficiency. The pH value of the mixed liquid after neutralization reaction is about 7-9, the mixed liquid is gathered and precipitated through an inclined tube sedimentation tank to separate supernatant and sludge, the supernatant is input into a mixed liquid adjusting tank, the sludge is input into a sludge tank to be collected, the sludge in the sludge tank is pumped into a waste acid filter press through a sludge pump to be subjected to pressure filtration and separation, the sludge is further separated into solid and liquid, the solid is put into a smelting furnace to be subjected to secondary batching, the liquid is put into the mixed liquid adjusting tank to be further purified, a small amount of alkali liquor is added into the mixed liquid adjusting tank through an alkali liquor adding device to adjust the pH value of the mixed liquid to be about 7-8 so as to adapt to effective filtration of a subsequent filtering unit 410, reclaimed water capable of being recycled is prepared, the reclaimed water is collected into a reclaimed water storage tank to be conveniently recycled, the reclaimed water recycling rate is not less than 70%, and the desalting rate is not less than 97%. The concentrated water produced by the reverse osmosis device enters the nanofiltration device for further filtration, the concentrated water produced by the nanofiltration device is concentrated by the triple-effect evaporator after being collected by the concentrated water tank, the obtained condensate is input into the mixed liquid adjusting tank for acidity adjustment, the obtained solid is crystal, and the crystal is put into a smelting furnace for batching and recycling, so that the secondary pollution is reduced. The purification rate of the lead content and the acid content of the system treated by the treatment system can reach more than 99 percent.
The present invention has been described in detail, and it should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model.
Claims (10)
1. A zero-emission treatment system for recycling waste water containing acid and lead is characterized by comprising a collecting unit for collecting and primarily filtering sewage water with different concentrations, a neutralization reaction unit for neutralizing the collected sewage water, a separation unit for separating neutralized sludge and sewage, a liquid treatment unit and a solid treatment unit for treating recovered liquid and solid respectively, the collecting unit, the neutralization reaction unit and the separation unit are connected in sequence, the separation unit comprises an inclined tube sedimentation tank for primarily separating liquid and sludge and a waste acid filter press for secondarily separating the primarily separated sludge, the liquid and the semisolid separated from the inclined tube sedimentation tank are respectively connected with a liquid treatment unit and a waste acid filter press, and the liquid and the solid separated by the waste acid filter press are respectively connected with the liquid treatment unit and the solid treatment unit.
2. The system for recycling and zero-emission treatment of wastewater containing acid and lead according to claim 1, wherein the neutralization reaction unit comprises a plurality of independent neutralization reaction tanks, the feed end of each neutralization reaction tank is connected with a collection unit and an alkaline chemical unit, the alkaline chemical unit comprises a soot dissolution tank and/or a lime milk stirring tank, and the discharge end of each neutralization reaction tank is connected with a separation unit.
3. The system for recycling and zero-emission treatment of wastewater containing acid and lead according to claim 2, characterized in that three neutralization reaction tanks are arranged, and each neutralization reaction tank is internally provided with a hydraulic stirring device.
4. The system of claim 1, wherein the liquid treatment unit comprises a mixed liquor adjusting tank for collecting and adjusting the acidity of clear liquid, an alkali liquor feeding device for adding alkali liquor into the mixed liquor adjusting tank, a filtering unit for performing multi-stage filtration on the liquid in the mixed liquor adjusting tank, and a reclaimed water reservoir for collecting the liquid filtered by the filtering unit, wherein an output end of the alkali liquor feeding device is connected with an input end of the mixed liquor adjusting tank, an output end of the mixed liquor adjusting tank is connected with an input end of the filtering unit, and an output end of the filtering unit is connected with an input end of the reclaimed water reservoir.
5. The zero-emission treatment system for recycling the acid-containing lead-containing wastewater according to claim 4, the device is characterized in that the filtering unit comprises a multi-media filter, an activated carbon filter, a resin softener, an ultrafiltration device, a security filter, a nanofiltration device, a reverse osmosis device and a mixed bed device, the output end of the mixed liquid regulating tank is connected with the input end of the multi-media filter, the output end of the multi-media filter is connected with the input end of the activated carbon filter, the output end of the activated carbon filter is connected with the input end of the resin softener, the output end of the resin softener is connected with the input end of the ultrafiltration device, the output end of the ultrafiltration device is connected with the input end of the security filter, the output end of the security filter is connected with the input end of the nanofiltration device, the output end of the nanofiltration device is connected with the reverse osmosis device, and the output end of the reverse osmosis device is respectively connected with the input ends of the nanofiltration device and the mixed bed device.
6. The acid and lead-containing wastewater recycling zero-emission treatment system as claimed in claim 5, wherein the output end of the nanofiltration device is further connected with the input end of a concentrated water tank, the output end of the concentrated water tank is connected with a triple-effect evaporator for concentrating and separating concentrated water, the output end of the triple-effect evaporator is respectively connected with a condensate water tank and a solid treatment unit, and the output end of the condensate water tank is connected with the input end of a mixed liquid adjusting tank.
7. The system for recycling zero-emission treatment of wastewater containing acid and lead according to claim 5, wherein the semi-solid output end of the inclined tube sedimentation tank is connected with the input end of a sludge tank, the output end of the sludge tank is connected with the input end of a waste acid filter press, and the liquid input end of the waste acid filter press is connected with the input end of a mixed liquid adjusting tank.
8. The system of claim 7, wherein the cleaning input ends of the multi-media filter, the activated carbon filter, the resin softener and the ultrafiltration device are all connected with a backwashing water cleaning device, and the cleaning output ends of the multi-media filter, the activated carbon filter, the resin softener and the ultrafiltration device are connected with the input end of a sludge pond.
9. The system of claim 8, wherein the cleaning input ends of the nanofiltration device and the reverse osmosis device are respectively connected with a nanofiltration cleaning device and a reverse osmosis cleaning device.
10. The recycling zero-emission treatment system for the lead-containing wastewater according to claim 1, wherein the solid treatment unit comprises a smelting furnace for treating solid waste, and the collection unit comprises a waste acid water collection tank and a collection pipeline.
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| CN202121212054.6U CN215667460U (en) | 2021-06-01 | 2021-06-01 | Zero release processing system of waste water cyclic utilization that contains acid and lead |
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| CN202121212054.6U CN215667460U (en) | 2021-06-01 | 2021-06-01 | Zero release processing system of waste water cyclic utilization that contains acid and lead |
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