CN101838071B - Electroplating reclaimed water recycling and treating system - Google Patents
Electroplating reclaimed water recycling and treating system Download PDFInfo
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- CN101838071B CN101838071B CN 201010175134 CN201010175134A CN101838071B CN 101838071 B CN101838071 B CN 101838071B CN 201010175134 CN201010175134 CN 201010175134 CN 201010175134 A CN201010175134 A CN 201010175134A CN 101838071 B CN101838071 B CN 101838071B
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Abstract
The invention relates to an electroplating reclaimed water recycling and treating system, comprising a control device, a preposed adjusting system, an ultrafiltering treating system and a reverse osmosis treating system, wherein the preposed adjusting system, the ultrafiltering treating system and the reverse osmosis treating system are mutually communicated, the preposed adjusting system comprises an ORP (Oxidation-Reduction Potential) adjusting system and a PH adjusting device; the ORP adjusting system comprises an ORP adjusting tank, a reducing agent metering pump, a reducing agent tank and a stirrer; the ulatrafiltering system comprises a water pump, a quartz sand filter, a precise filter and an ultrafiltering membrane assembly; and the reverse osmosis system comprises a water pump, an active carbon filter, a scale inhibitor adding device, a safety filter, a first section of high-pressure pump, a second section of high-pressure pump, a reverse osmosis membrane assembly and a water purified tank. By adopting a device combining membrane separation and the filter to treat the electroplating reclaimed water, the invention has the advantages of favorable treatment effect, low operation cost, convenient operation and capability of long-term continuous operation; and in addition, the invention meets the requirements of environmental protection and cleaning electroplating, not only reduces the pollution and saves the production cost, but also can fully utilize water resources and protect the environment.
Description
Technical field
The present invention relates to water treatment field, especially a kind ofly will be back to production after electroplating wastewater processing, take full advantage of water recycling processing system in the plating of water resources.
Background technology
Electroplate in the electroplating washing water of factory and contain a lot of heavy metal ion, if unprocessed or process not qualified discharge, waste water will polluted source and environment, and not only harm humans is healthy, and causes the deterioration of the ecological environment.On the other hand, contain the useful matteies such as precious metal or heavy metal in electroplating wastewater, if recycled, not only can reduce pollution, can also reduce production costs, save water resources.
At present, existing electroplating waste processing equipment is generally to add various chemical agents in waste water, and by regulating pH value, adopts precipitation and the method for filtering that waste water is processed, thus qualified discharge.Together precipitate formation mud after the various chemical agents of the heavy metal in waste water and interpolation react, transport outward landfill disposal after press filtration becomes dried mud.This treating processes can not reclaim the useful matteies such as noble metal in waste water, and after processing, effluent quality is unstable, and the situation that heavy metal substance exceeds standard easily occurs, and deals with improperly also and may cause secondary pollution if contain the mud of heavy metal.
Summary of the invention
For the deficiency of above existing electroplating waste processing equipment, the purpose of this invention is to provide and a kind of electroplating wastewater is back to production after treatment, can reduce discharge of wastewater, effectively prevent and remedy pollution, take full advantage of water recycling processing system in the plating of water resources.
The objective of the invention is by realizing by the following technical solutions:
Water recycling processing system in plating, comprise control device and the preposition regulation system that is interconnected, uf processing system and reverse osmosis treatment system, described preposition regulation system comprises 0RP (redox potential) setting device and the PH setting device that is interconnected, the ORP setting device comprises ORP surge tank, reductant metering pump, reducing agent tank and agitator, electroplating wastewater is treated enters into clean water basin after reaching emission standard, is transported to the ORP surge tank by lift pump;
Described uf processing system comprises ultrafiltration working shaft, quartz filter, accurate filter, hyperfiltration membrane assembly, hyperfiltration reverse-rinsing pump and the ultrafiltration water tank that is interconnected, former water enters into the transition water tank automatically by upflow tube after the PH setting device is regulated, by the ultrafiltration working shaft, it is delivered to quartz filter;
Described reverse osmosis treatment system comprises reverse osmosis working shaft, activated charcoal filter, Scale inhibitors adding set, cartridge filter, one section high-pressure pump, two sections high-pressure pump, reverse osmosis membrane assembly, clear water tank, water purification lift pump and the washing units that are interconnected.
As the preferred technical solution of the present invention, described PH setting device comprises PH surge tank and acid solution case, and the acid solution case is communicated with the PH surge tank by the acid solution volume pump.
As the preferred technical solution of the present invention, described lift pump connecting fluid level controller.
As the preferred technical solution of the present invention, the operation of described whole system adopts programmable logic controller automatically to control, the signal that system sends by fluid level controller, pressure transmitter and the water quality sensor that is located at each signal acquisition point, automatically controlled water pump starts or closes.The operation of described ultrafiltration system adopts programmable logic controller automatically to control, and when ultrafiltration water tank low-water level and transition water tank had water, the ultrafiltration working shaft started automatically.
As the preferred technical solution of the present invention, described quartz filter is glass steel material, and accurate filter adopts stainless steel;
Described each pump all adopts stainless steel, and activated charcoal filter is glass steel material.
As the preferred technical solution of the present invention, the panel of described control device is provided with power light, run indicator and alarm lamp.
The invention has the beneficial effects as follows: with respect to prior art, the present invention adopts the process unit that membrane sepn, membrane concentration and quartz filter, activated charcoal filter combine to process electroplating wastewater, and treatment effect is good, working cost is low; System is elegant in appearance, and is easy to operate, can move continuously for a long time; Meet environment-protecting clean and electroplate requirement, can be enterprise and save effluent charge, water rate and the electricity charge.The present invention processes electroplating wastewater, not only reduces pollution, saves production cost, and can take full advantage of water resources, and protection of the environment is brought good economic benefit and social benefit simultaneously.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing and specific embodiment:
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, water recycling processing system in plating, comprise control device and the preposition regulation system that is interconnected, uf processing system and reverse osmosis treatment system, described preposition regulation system comprises ORP (redox potential) setting device and the PH setting device that is interconnected, the ORP setting device comprises ORP surge tank 21, reductant metering pump 26, reducing agent tank 27 and agitator, electroplating wastewater is treated enters into clean water basin after reaching emission standard, is transported to ORP surge tank 21 by lift pump 23; Described uf processing system comprises ultrafiltration working shaft 19, quartz filter 18, accurate filter 17, hyperfiltration membrane assembly 14, hyperfiltration reverse-rinsing pump 11 and the ultrafiltration water tank 10 that is interconnected, the PH setting device comprises PH surge tank 22 and acid solution case 24, and acid solution case 24 is communicated with PH surge tank 22 by acid solution volume pump 25.Former water enters into transition water tank 20 automatically by upflow tube after the PH setting device is regulated, by ultrafiltration working shaft 19, it is delivered to quartz filter 18; Be connected transition water tank 20 between described ultrafiltration working shaft 19 and ORP surge tank 21; Described reverse osmosis treatment system comprises reverse osmosis working shaft 1, activated charcoal filter 2, Scale inhibitors adding set, cartridge filter 3, one section high-pressure pump 4, two sections high-pressure pump 8, reverse osmosis membrane assembly, clear water tank 6, water purification lift pump 7 and the washing units that are interconnected.The Scale inhibitors adding set comprises Scale inhibitors case 32 and Scale inhibitors volume pump 33.
In the present embodiment, lift pump 23 connecting fluid level controllers 28, when the surge tank low-water level, lift pump 23 starts automatically, and when surge tank water was full, lift pump 23 was out of service.Under automatic mode, during lift pump 23 work, volume pump 26 begins to add reductive agent, controlled by the ORP measuring instrument, controls its ORP value below 200mV.Water outlet after ORP adjusts enters into the PH setting device.The PH setting device comprises that PH surge tank 22, acid solution volume pump 25, acid solution case 24 and agitator form.Water in ORP regulating tank 21 enters into PH regulating tank 22 automatically by upflow tube, and under automatic mode, during lift pump 23 work, volume pump begins to add HC1, controlled by the PH measuring instrument, controls its pH value in 7 left and right.When volume pump began dosing, the stirrer of tank top started automatically, made the medicament short mix of interpolation even.Adopt in-line meter automatically to control the membrane element that the suitable OPR value of adjusting of medicament and pH value can effectively be protected subsequent disposal.
The operation of described whole system adopts programmable logic controller automatically to control, the signal that system sends by fluid level controller, pressure transmitter and the water quality sensor that is located at each signal acquisition point, and automatically controlled water pump starts or closes.For example the operation of uf processing system adopts programmable logic controller automatically to control, and when ultrafiltration water tank 10 low-water level and transition water tank 20 had water, ultrafiltration working shaft 19 started automatically.Quartz filter 18 is glass steel material, and accurate filter 17 adopts stainless steel, all has good corrosion resistance.Filter through these twice and can effectively tackle impurity particle tiny in waste water, classified filtering has larger pollutant holding capability.Wastewater streams is through quartz filter 18 and accurate filter 17 is laggard enters hyperfiltration membrane assembly 14, see through liquid and enter into ultrafiltration water tank 10, the waste water of discharging enters into Sewage treatment systems by discharge of wastewater valve 30 with along washing bleed valve 31, and the rate of recovery of ultrafiltration system is up to 90%.The material of ultra-filtration membrane is modified PVC, has good hydrophilic property, anti-organic contamination, acid and alkali-resistance, is difficult for the dirty characteristics such as stifled through the PVC after modification.During full or raw water box lack of water, ultrafiltration working shaft 19 is automatically out of service when ultrafiltration water tank 10 water.In order in time to remove the impurity in ultrafiltration membrane filaments, under auto state, system automatically performs flushing operation, and operating procedure is 40 minutes normal filtration time, and along washing 10 seconds time, 30 seconds backwash time is along washing 10 seconds time.During backwash, backwashing pump 11 is opened automatically, and relevant by-pass valve control automaticallyes switch simultaneously.Backwash frequency can be according to the raw water quality adjustment, and the automatic back-washing function can prevent the membrane element contamination and plugging.
Each pump of the present embodiment all adopts stainless steel, has good corrosion resistance.Activated charcoal filter 2 is glass steel material, in-built high-quality fruit shell carbon, and the specific surface area of gac (BET) is up to 1000m
2/ g, thereby have very strong physical adsorption ability, the organism in water, COD (chemical oxygen demand), colourity and peculiar smell there are very high removal effect.In addition, but also remove portion colloid and microorganism.Arranging of activated charcoal filter 2 is mainly in order to reduce the organic contamination of reverse osmosis membrane.In order to reach the rate of recovery more than 60%, and prevent reverse osmosis concentrated water end (W.E.), particularly in the first-stage reverse osmosis pressurized vessel, carbonate, sulfate radical and Ca appear in the dense water side of last root membrane module
2+, Mg
2+The chemical fouling of ion, thus the performance of membrane module affected, before feed water by reverse osmosis, adopted the most economical Scale inhibitors technology that adds.What native system was selected is the phosphoric acid salt efficient scale inhibitor, effectively prevents Ca, Mg precipitation.
Described reverse osmosis system adopts programmable logic controller (PLC) controls, have manually and automatically, clean and water transition function processed.Whole system can be realized full-automatic unmanned operation on duty.Under automatic mode, when ultrafiltration water tank 10 has water and clear water tank 6 to be low liquid level, reverse osmosis working shaft 1 starts automatically, the ultrafiltration current make one section high-pressure pump 4 intake pressure raise gradually after activated charcoal filter 2 and cartridge filter 3, after water-in pressure arrives 0.3MPa, one section high-pressure pump 4 starts automatically, former water enters into one section permeable membrane element 5 after the high-pressure pump pressurization, scouring electromagnetic valve is opened simultaneously, flush time 0～60 second is adjustable continuously, rinse magnetic valve autoshutdown later, system begins to boost and normally moves.The intake pressure that the dense water out of one section membrane module 5 enters into 8, two sections high-pressure pump 8 of two sections high-pressure pump rises gradually, and to 0.8MPa, two sections high-pressure pump 8 start automatically when pressure rise, and two sections further adherence pressures of high-pressure pump 8 are pumped into two-segment film assembly 9 with it.The dense water of two-segment film externally discharges, and its quantity discharged is about 40% of feed water by reverse osmosis amount.One section and two-segment film assembly produce to purify waste water and enter into clear water tank 6, and when clear water tank 6 water were full, reverse osmosis working shaft 1 stopped automatically, and the while volume pump quits work.One section high-pressure pump 4 intake pressure descends gradually, and during to 0.05MPa, one section high-pressure pump 4 is out of service when pressure decreased, and two sections high-pressure pump 8 intake pressures descend gradually simultaneously, and during to 0.5MPa, two sections high-pressure pump 8 are out of service when pressure decreased.
Whole system of the present invention is by liquid level or organically chain operation of pressure signal.Permeable membrane adopts the low pressure pollution-resistant membrane, has good clanability.System disposition has medicine water tank 29 and washing unit independently, can carry out matting and filling protection liquid to membrane element.Scavenging pump must be in the manual mode operation of related device, and Process of Chemical Cleaning must artificially participate in carrying out.System's hyperfiltration membrane assembly 14 connects Sewage treatment systems by backwash bleed valve 13, and one section membrane module 5 is connected with the two-segment film assembly respectively by magnetic valve 12 connection Sewage treatment systemss.The panel of control device is provided with power light, run indicator and each alarm lamp.
Claims (3)
1. water recycling processing system in a plating, comprise control device and the preposition regulation system that is interconnected, uf processing system and reverse osmosis treatment system, it is characterized in that:
Described preposition regulation system comprises ORP (redox potential) setting device and the pH regulator device that is interconnected, the ORP setting device comprises ORP surge tank, reductant metering pump, reducing agent tank and agitator, electroplating wastewater is treated enters into clean water basin after reaching emission standard, is transported to the ORP surge tank by lift pump; Described pH regulator device comprises pH regulator case, acid solution case, acid solution volume pump and agitator, and the acid solution case is communicated with the pH regulator case by the acid solution volume pump; Described lift pump connecting fluid level controller, when pH regulator case and ORP surge tank low-water level, lift pump starts automatically, and when pH regulator case and ORP surge tank water were full, lift pump was out of service; Under automatic mode, during lift pump work, the reductant metering pump begins to add reductive agent, controlled by the ORP measuring instrument, control its ORP value below 200mV, water outlet after ORP adjusts enters into the pH regulator device, and particularly, the water in the ORP surge tank enters into the pH regulator case automatically by upflow tube; Under automatic mode, during lift pump work, the acid solution volume pump begins to add HCl, controlled by the pH measuring instrument, control its pH value 7, when the acid solution volume pump began dosing, the agitator of pH regulator box top started automatically, make the medicament short mix of adding even, adopt in-line meter automatically to control medicament and adjust the membrane element that suitable ORP value and pH value can effectively be protected subsequent disposal;
Described uf processing system comprises ultrafiltration working shaft, quartz filter, accurate filter, hyperfiltration membrane assembly, hyperfiltration reverse-rinsing pump and the ultrafiltration water tank that is interconnected, former water enters into the transition water tank automatically by upflow tube after the pH regulator device is regulated, by the ultrafiltration working shaft, it is delivered to quartz filter; Wastewater streams is through quartz filter and accurate filter is laggard enters hyperfiltration membrane assembly, sees through liquid and enters into the ultrafiltration water tank, and the waste water of discharging enters into Sewage treatment systems by the discharge of wastewater valve with along washing bleed valve; The material of ultra-filtration membrane is modified PVC; Described quartz filter is glass steel material, and accurate filter adopts stainless steel;
Described reverse osmosis treatment system comprises reverse osmosis working shaft, activated charcoal filter, Scale inhibitors adding set, cartridge filter, one section high-pressure pump, two sections high-pressure pump, reverse osmosis membrane assembly, clear water tank, water purification lift pump and the washing units that are interconnected; Wherein activated charcoal filter is glass steel material, and the Scale inhibitors adding set comprises Scale inhibitors case and Scale inhibitors volume pump; Under automatic mode, when the ultrafiltration water tank has water and clear water tank to be low liquid level, the reverse osmosis working shaft starts automatically, the ultrafiltration current make one section high-pressure pump intake pressure raise gradually after activated charcoal filter and cartridge filter, after water-in pressure arrives 0.3MPa, one section high-pressure pump starts automatically, former water enters into one section permeable membrane element after the high-pressure pump pressurization, scouring electromagnetic valve is opened simultaneously, flush time 0～60 second is adjustable continuously, rinse magnetic valve autoshutdown later, system begins to boost and normally moves; The dense water out of one section permeable membrane element enters into two sections high-pressure pump, the intake pressure of two sections high-pressure pump rises gradually, to 0.8MPa, two sections high-pressure pump start automatically when pressure rise, and two sections further adherence pressures of high-pressure pump are pumped into two sections permeable membrane elements with it; The dense water of two sections permeable membrane elements externally discharges, and its quantity discharged is 40% of feed water by reverse osmosis amount; One section and two sections permeable membrane elements produce to purify waste water and enter into clear water tank, when clear water tank water is full, the reverse osmosis working shaft stops automatically, simultaneously the Scale inhibitors volume pump quits work, and one section high-pressure pump intake pressure descends gradually, when pressure decreased during to 0.05MPa, one section high-pressure pump is out of service, simultaneously two sections high-pressure pump intake pressures descend gradually, and during to 0.5MPa, two sections high-pressure pump are out of service when pressure decreased;
Described each pump all adopts stainless steel.
2. water recycling processing system in plating according to claim 1, it is characterized in that: the operation of whole system adopts programmable logic controller automatically to control, system automatically controls the startup of each pump or closes by the signal that fluid level controller, pressure transmitter and the water quality sensor that is located at each signal acquisition point sends; The operation of described uf processing system adopts programmable logic controller automatically to control, and when ultrafiltration water tank low-water level and transition water tank had water, the ultrafiltration working shaft started automatically.
3. water recycling processing system in plating according to claim 1, it is characterized in that: the panel of described control device is provided with power light, run indicator and alarm lamp.
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| CN 201010175134 CN101838071B (en) | 2010-05-11 | 2010-05-11 | Electroplating reclaimed water recycling and treating system |
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| CN 201010175134 CN101838071B (en) | 2010-05-11 | 2010-05-11 | Electroplating reclaimed water recycling and treating system |
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| CN102442734B (en) * | 2010-10-11 | 2013-03-13 | 张家港市三星净化设备制造有限公司 | Reclaimed water reusing device of industrial wastewater |
| CN102010033B (en) * | 2010-12-05 | 2012-09-26 | 中山市三角镇环保科技创新中心 | Electroplating wastewater reverse osmosis membrane treatment method adopting energy recovery device |
| CN102715851A (en) * | 2011-03-29 | 2012-10-10 | 天津市食品加工工程中心 | Water-saving fruit and vegetable cleaning device |
| CN103771620B (en) * | 2014-01-13 | 2015-11-25 | 大连隆正光饰机制造有限公司 | A kind of light polishing machine liquid waste disposal and middle water circulation use integration apparatus |
| CN104108809B (en) * | 2014-06-05 | 2016-06-01 | 深圳市翰唐环保科技有限公司 | The purification process of waste water |
| CN104944526A (en) * | 2015-06-04 | 2015-09-30 | 黎建军 | Method for treating water through mechanical film method |
| CN105540901B (en) * | 2016-03-03 | 2018-01-23 | 深圳净小龙科技有限公司 | A kind of intelligent water cleaning systems |
| CN106215708A (en) * | 2016-08-31 | 2016-12-14 | 上海交通大学 | Improve the short-cut method of nickel zinc electroplate rinsing wastewater online resource embrane method closed-system efficiency |
| CN106277528A (en) * | 2016-08-31 | 2017-01-04 | 上海交通大学 | The short-cut method of ferronickel electroplate rinsing wastewater online resource embrane method closed-system performance improvement |
| CN106277525A (en) * | 2016-08-31 | 2017-01-04 | 上海交通大学 | The easy improved method of tin-nickel electrolytic plating poaching wastewater online resource embrane method closed-system performance |
| CN108483715A (en) * | 2018-04-12 | 2018-09-04 | 常州大学 | A kind of processing method of Electroplating Wastewater, nickel |
| CN114074996A (en) * | 2020-08-18 | 2022-02-22 | 伟泰科技（无锡）有限公司 | Recovery processing system of electroplating sewage |
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| CN101028958B (en) * | 2006-03-04 | 2010-10-13 | 林炳金 | Method for treating industrial waste water |
| CN101096286A (en) * | 2006-06-27 | 2008-01-02 | 首都航天机械公司 | Treatment method for electro-plating compound standard-met wastewater |
| TW200905019A (en) * | 2007-07-24 | 2009-02-01 | Ei Dorado Corp | Recycling and processing method for electroplating waste liquid |
| CN201842716U (en) * | 2010-05-11 | 2011-05-25 | 吴志文 | Processing system for water recovery in electroplating |
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