CN104150680B - Electroplating waste water treatment system - Google Patents
Electroplating waste water treatment system Download PDFInfo
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- CN104150680B CN104150680B CN201410272866.8A CN201410272866A CN104150680B CN 104150680 B CN104150680 B CN 104150680B CN 201410272866 A CN201410272866 A CN 201410272866A CN 104150680 B CN104150680 B CN 104150680B
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Abstract
The present invention relates to electroplating waste processing process.The invention provides a kind of that can make full use of the organism in electroplating wastewater, nitriding treatment thoroughly, COD removal efficiency is high, the treatment process and the treatment system that are not easy the electroplating wastewater producing latch up phenomenon, the organism solved existing for existing electroplating effluent treatment method is not fully recycled, nitriding treatment not thoroughly, problem that COD removal efficiency is low.The method mainly comprises solid-liquid separation, removes the steps such as suspended substance, heavy-metal ion removal and organism process.System comprises acid absorption column and the solid-liquid separating machine be docking together successively, floating matter removal device and metal ion treatment device, the liquid outlet of described metal ion treatment device be provided with dock successively anaerobic digester, anaerobic precipitation pond, Ammonia blowing-out tower, Anoxic/Aerobic pond, second pond and sterilization pool, acid absorption column links together for absorbing ammonia with Ammonia blowing-out tower.
Description
Technical field
The present invention relates to electroplating waste processing process, particularly relate to a kind for the treatment of process and electroplating waste water treatment system of electroplating wastewater.
Background technology
In order to meet the requirement of environmental protection, electroplating wastewater needs to process.Electroplating wastewater mainly contains water, suspended particulate, precipitable particulate matter, heavy metal ion, ammonia nitrogen (NH
3-N) and organism (COD) etc.
The treatment process of existing electroplating wastewater is: directly pass through removal of heavy metal ions device heavy-metal ion removal to the electroplating wastewater that factory discharges, be then discharged to sewage work by sewage network and carry out ammonia nitrogen (NH
3-N) and organic process.Chinese Patent Application No. be 2013106523766, publication date be April 9 in 2014 day, be called the treatment process disclosing electroplating wastewater in the patent document of " a kind of technique and device removing heavy metal out of electroplating wastewater ion ".
Existing electroplating effluent treatment method has the following disadvantages: easily produce equipment blocking during removal of heavy metal ions and damage phenomenon (when carrying out heavy metal process especially by filtering membrane), spoil disposal difficulty, process thoroughly, do not obtain abundant Appropriate application to organism; Require that the condition such as designed capacity, operating mode of sewage work meets by receiving the standard of sewage, and electroplating sewerage to be randomness enter sewage network, bring very big inconvenience to the construction plan of sewage work; The electroplating sewerage of heavy-metal ion removal is transported in the way of sewage work can give out dense stink, grow mosquitos and flies, be difficult to process stink, is unfavorable for environmental health.
Summary of the invention
The invention provides a kind of that can make full use of the organism in electroplating wastewater, nitriding treatment thoroughly, COD removal efficiency is high, the treatment process and the system that are not easy the electroplating wastewater producing latch up phenomenon, the organism solved existing for existing electroplating effluent treatment method is not fully recycled, nitriding treatment not thoroughly, problem that COD removal efficiency is low.
Above technical problem is solved by following technical proposal: a kind for the treatment of process of electroplating wastewater, processes electroplating wastewater in accordance with the following steps:
1st step, by solid-liquid separating machine, solid-liquid separation is carried out to electroplating wastewater.Can effectively prevent from producing latch up phenomenon and damage equipment in waste water course of conveying.
2nd step, by isolated liquid in the 1st step by floating matter removal device removing suspended substance.The processing efficiency in subsequent technique can be improved.
3rd step, the heavy metal ion removed in the electroplating wastewater after the 2nd step process;
4th step, by after the 3rd step process electroplating wastewater flocculation after dewatered by whizzer;
5th step, by isolated liquid in the 4th step in anaerobic digester by the effect of anaerobion, make the organic substance decomposing in waste water transform into methane and carbon dioxide after by precipitation method carry out mud-water separation.Organism in electroplating wastewater is made full use of, nitriding treatment is thorough when making electroplating wastewater processing.
6th step, isolated liquid in the 5th step is carried out denitrogenation processing; Denitrogenation processing comprises the following steps:
6-1 walks, the pH value of isolated liquid in the 5th step is adjusted to 8.5 ~ 9.4;
6-2 walks, by the method that air-blowing takes off, the free ammonia in liquid is volatilized the liquid produced in 6-1, then absorbs the ammonia volatilized by acid solution and generates ammonium salt;
6-3 walks, the liquid walked after denitrogenation through 6-2 is carried out neutralizing treatment, and pH value is adjusted to 7.0 ~ 8.4;
7th step, the liquid after the 6th step denitrogenation processing is carried out degraded COD, BOD and ammonia nitrogen;
The method of degraded COD, BOD and ammonia nitrogen is:
7-1 step, be transported to again in one-level Aerobic Pond by the Liquid transfer after the 6th step denitrogenation to one-level anoxic pond and process after process; Anaerobic bacterium in one-level anoxic pond makes that the larger molecular organics in liquid is degraded to small organic molecule, denitrifying bacterium utilizes the organism in liquid to carry out anti-nitration reaction for the mixed solution containing nitric nitrogen refluxed in carbon source and one-level Aerobic Pond, and the nitric nitrogen in water is converted into nitrogen; Organism in liquid absorbs by the aerobic bacteria in one-level Aerobic Pond under Effect of Dissolved Oxygen to be decomposed, and is converted into CO
2with self organism, the ammonium oxidation in water is also become nitric nitrogen by Simultaneous Nitrification bacterium;
7-2 step, Liquid transfer after the process of one-level Aerobic Pond are transported in secondary Aerobic Pond after processing in secondary anoxic pond again and process; Anaerobic bacterium in secondary anoxic pond makes that the larger molecular organics in liquid is degraded to small organic molecule, denitrifying bacterium utilizes the organism in liquid to carry out anti-nitration reaction for the mixed solution containing nitric nitrogen refluxed in carbon source and secondary Aerobic Pond, and the nitric nitrogen in water is converted into nitrogen; Organism in liquid absorbs by the aerobic bacteria in secondary Aerobic Pond under Effect of Dissolved Oxygen to be decomposed, and is converted into CO
2with self organism, the ammonium oxidation in water is also become nitric nitrogen by Simultaneous Nitrification bacterium; Liquid transfer after the process of secondary Aerobic Pond processes in the 8th step.
This step adopt anaerobism-aerobic-anaerobism-aerobic and the sludge part be settled out is got back in one-level anoxic pond, make degraded COD, BOD and ammonia nitrogen can include municipal sewage system in ight soil, after treatment, NH3-N≤28mg/L, utilizes very abundant to the nutrients of nitrogen in electroplating wastewater.
8th step, by the liquid after the 7th step process by precipitation method carry out mud-water separation, the sludge part that the 7th step is settled out is got back in described one-level anoxic pond;
9th step, to discharge after the isolated liquid disinfection of the 8th step;
10th step, carries out processed by the mud produced in the 5th step and the 8th step; Dehydration in sludge dewatering in 10th step and the 4th step is separately carried out.
The beneficial effect that dehydration in sludge dewatering in 10th step and the 4th step is separately carried out is: realize the organic Appropriate application in waste water.Because the dry mud that the 4th step produces is " rich foster dry mud ", is just applicable to directly making fertilizer, after the mud dehydration of the mud that 5th step and the 8th step produce especially in the 8th step for " lean support dry mud ", if not in order to increase the soil thickness that makes land used but in order to apply fertilizer, then this part mud be directly unaccommodated as fertilizer nutrient, thus achieve the Appropriate application of ight soil.
As preferably, the method by air stripping in 6-2 step removes free ammonia, and the air water volume ratio in 6-2 step during air stripping is 2000:1 ~ 2400:1.
As preferably, between the 5th step and the 6th step, increase equalizing tank regulate liquid, arrange sewage sludge storage pond to the mud produced in the 5th step and the 8th step gather deposit shallow lake after carry out processed again, sewage sludge storage pond is provided with overflow port, and overflow port is docking together with equalizing tank.Can sewage outflow be prevented and cause environmental pollution.Matter can be carried out to the liquid entered in the 6th step in the adjustment of amount, make the controllability of subsequent disposal good.
A kind of electroplating waste water treatment system, comprise acid absorption column, and the solid-liquid separating machine be docking together successively, floating matter removal device and metal ion treatment device, the liquid outlet of described metal ion treatment device is provided with the anaerobic digester docked successively, anaerobic precipitation pond, Ammonia blowing-out tower, Anoxic/Aerobic pond, second pond and sterilization pool, acid absorption column links together for absorbing ammonia with Ammonia blowing-out tower, floating matter removal device comprises the wastewater disposal basin being provided with slag notch and liquid outlet, strike off the scraper plate of the suspended substance on wastewater disposal basin liquid level, the telescoping mechanism driving scraper plate reciprocating and scraper plate hanger bracket, described scraper plate hanger bracket comprises vertical rod and fork, described vertical rod is connected with described telescoping mechanism, the upper end of described vertical rod is connected with scraper plate and lifts a gag lever post and scraper plate puts down a gag lever post, described vertical rod lower end is provided with transverse axis, middle part and the described transverse axis of described fork are hinged, described scraper plate is connected to the lower end of described fork, the upper end of described fork is provided with counterbalance weight, a gag lever post is lifted and scraper plate puts down between a gag lever post at scraper plate in the upper end of described fork, the telescopic direction of described telescoping mechanism is identical with the direction of motion of described scraper plate.Native system removes suspended substance process, when scraper plate is positioned at scraper plate stroke initiating terminal, fork is made to be that axle swings to fork upper end and abuts to scraper plate and put down on a gag lever post with cross bar, under the effect of counterweight, fork remains on and presses on the state that scraper plate puts down a gag lever post, now scraper plate lower rim is arranged in below the liquid level of wastewater disposal basin, then under the effect of telescoping mechanism, scraper plate moves to scraper plate stroke end end, push the suspended substance on liquid level to slag notch and discharge from slag notch, then fork upper end is made to be that axle lifts a gag lever post towards scraper plate with cross bar, under the effect of counterweight, fork remains on and presses on the state that scraper plate lifts a gag lever post, now scraper plate lower rim is arranged in more than the liquid level of wastewater disposal basin, then under the effect of telescoping mechanism, scraper plate is moved back into scraper plate stroke initiating terminal, scraper plate different suspended substance contact when making backhaul.Telescoping mechanism can for cylinder, oil cylinder or screw mandrel rotating drive thread bush alternating translational and vertical rod is connected with thread bush, drag-line moves around and drives drive block to move back and forth and by vertical rod with structure formations such as drive block are connected.After the suspended substance of electroplating wastewater is scraped, then open liquid outlet, make wastewater streams to next process.Removal suspended particle efficiency is high, the scraper plate part be positioned on liquid level is not easy dirty.
As preferably, described floating matter removal device also comprises makes scraper plate be transformed into the scraper plate lifting trigger member of lifting position by putting down position and make scraper plate be transformed into by lifting position the scraper plate decline trigger member putting down position, described scraper plate lifting trigger member is positioned at scraper plate stroke end end, described scraper plate decline trigger member is positioned at scraper plate stroke initiating terminal, and described scraper plate decline trigger member and scraper plate lifting trigger member are all the block that same fork coordinates.Can realize the automatic position-changing of scraper plate after scraper plate moves into place, level of automation is good.Adopt mechanical type automatic position-changing, structure is simple, reliable in action.If adopt switch to carry out polarity formula transposition, then the envrionment conditions due to sewage lagoon is poor, then reliability can be poor.
As preferably, described floating matter removal device also comprise along scraper plate travel direction extend determine slide rail, the upper end of described vertical rod is provided with suspending piece, described suspending piece is provided with the roller that two rows distribute along scraper plate travel direction, described suspending piece is determined slide rail by described roller be connected with described, and described vertical rod is between two row's rollers.Stationarity when scraper plate moves is good.Little with the frictional force of determining between slide rail in the process of suspending piece movement, in moving process, the junction of vertical rod and suspending piece is not easy to produce torsional deformation, can improve the connection reliability between vertical rod and suspending piece.
As preferably, described floating matter removal device also comprises the impeller waste gas in electroplating chamber being transported to transfer lime, air pump and driving air pump in wastewater disposal basin, described impeller is arranged in transfer lime, and described telescoping mechanism is cylinder, and described cylinder is by described impeller-driven.The waste gas of electroplating chamber in transfer lime conveying belt sewage lagoon, if the wind-force of this process blower fan is too little, if the waste gas in electroplating chamber can not be discharged wind-force too greatly in time up hill and dale, can cause waste water in wastewater disposal basin to splash by the blower fan of the waste gas in use procedure in dispatch electroplating chamber.The technical program by installing impeller, playing damping action to the waste gas flowing through transfer lime in transfer lime, thus timely for the waste gas in the electroplating chamber thoroughly end can either be siphoned away, the water in wastewater disposal basin can be avoided again to spill by powerful blower fan, and impeller drives scraper plate to move for driving air pump to cylinder air feed to the reactive force of the damping action power of waste gas, make to obtain recycling for the energy of the blower fan of dispatch waste gas in workshop, thus energy consumption when can reduce off gas treatment.Adopt cylinder as telescoping mechanism, clean environment firendly.
As preferably, described floating matter removal device also comprises valve actuating mechanism, the surrounding of described wastewater disposal basin is provided with valve, the outlet of described valve is inner towards wastewater disposal basin, described air pump is provided with air pump outlet, described valve actuating mechanism comprises determines plate and sealed rotational is connected to the dynamic plate determining plate, describedly determine to be provided with the first annular air channel between plate and dynamic plate, second annular air channel and the 3rd annular air channel, described first annular air channel, second annular air channel and the 3rd annular air channel three and dynamic plate coaxial, described determine plate be provided with first annular air channel be communicated with the first air outlet, the 3rd air outlet that the second air outlet be communicated with the second annular air channel is communicated with the 3rd annular air channel, described dynamic plate is provided with the first inlet mouth be communicated with the first annular air channel, the 3rd inlet mouth that the second inlet mouth be communicated with the second annular air channel is communicated with the 3rd annular air channel, described cylinder comprises cylinder body and piston, described cylinder body is divided into and stretches out chamber and indentation chamber by described piston, described chamber of stretching out is connected with described first air outlet, described indentation chamber is connected with described second air outlet, the import of described nozzle is connected with described 3rd air outlet, described first inlet mouth, second inlet mouth and the 3rd inlet mouth three be distributed in centered by dynamic plate axis circumferentially and can with described air pump outlet docking.Arrange valve blow towards wastewater disposal basin inside, can effectively prevent exhaust emissions in air, environment protecting is good.During oil removal scraper plate do not need ceaselessly to move but only when just scrape after suspended substance accumulates to certain thickness, therefore in scraper plate stopped process, then can not be recycled utilization to the energy of blower fan.And the technical program makes valve and cylinder by samely utilizing exhaust-driven air pump air feed, can improving energy recovery utilizing status of the present invention further further.It is convenient that air pump carries out when output channel switches.
As preferably, described wastewater disposal basin sidewall is provided with the curved reflecting surface making the reflection liquid pouring into wastewater disposal basin side return wastewater disposal basin.When the water in wastewater disposal basin produce ripple and the wave flow that formed to the sidewall of wastewater disposal basin time, waste water is not easy to splash outside, pond, has the environmentally-friendly sanitary utilized with preserving wastewater disposal basin periphery.
As preferably, described floating matter removal device also comprises refueling device, described refueling device comprises storage tank, oil discharge passage, rupture of membranes bar and corrosive fluid bin, described oil discharge passage is used for the hinged place lubricating oil in described storage tank being transported to described fork and described transverse axis, described storage tank comprises at least two sheathed successively and cavitys be fixed together, the lower wall of described cavity is provided with oil outlet, described oil outlet is sealedly connected with sealing membrane, described rupture of membranes bar vertically extends and is positioned at the below of storage tank, described rupture of membranes bar, and the oil outlet of all cavitys is all positioned on same vertical curve, regularly rotten formula floating drum is thoroughly provided with in described corrosive fluid bin, described regular corruption saturating formula floating drum comprises the rotproofness shell of lower ending opening and some corrosive fluids by being corroded in liquid bin expend the broken dividing plate of setting duration corrosion, described shell divide is gone out some floating chambers by described dividing plate, the quantity of described floating chamber is equal with the quantity of described cavity, described dividing plate distributes along the vertical direction, described storage tank floats on the corrosive fluid in described corrosive fluid bin by described floating drum, described storage tank can both float by floating chamber independently described in each, corrosive fluid in corrosive fluid bin often corrode brokenly a floating chamber and cause that storage tank declines in process once, described rupture of membranes bar only can poke sealing membrane on a cavity.During use, lubricating oil is injected in each cavity, loading in corrosive fluid bin according to required oiling interval time long (hereinafter referred to as setting duration) can to set duration by corrosive fluid broken for dividing plate corrosion, when the time of pouring corrosive fluid into reaches a setting duration, the dividing plate of bottom is corroded brokenly, corrosive fluid enters in the floating chamber of bottom, storage tank is dropped to and is floated by several second floating chamber from below to up, sealing membrane in decline process on outermost cavity is poked by rupture of membranes bar, outflow of lubrication oil in this cavity and the hinged place of fork and transverse axis is lubricated, when the time of pouring corrosive fluid into reaches two setting durations, count the dividing plate of the second layer from the bottom up and be also corroded brokenly, corrosive fluid enters in second floating chamber of number from the bottom up, storage tank is dropped to further and is floated by the 3rd floating chamber of number from the bottom up, is poked, outflow of lubrication oil in this cavity and again lubricating the hinged place of fork and transverse axis in decline process from outer toward the sealing membrane on the cavity of the second layer of interior number by rupture of membranes bar, the like be corroded brokenly Zi to all dividing plates, then change automatic fuelling device can re-start automatic oiling.
Processing method of the present invention has following advantage: the throw out in electroplating wastewater and suspended substance are removed before removing heavy metal ion, can improve follow-up processing efficiency and prevent latch up phenomenon; To the adequately and reasonably processing and utilizing that the organism in electroplating wastewater carries out; Carry out denitrogenation processing by stripping method to ammonia nitrogen, denitrogenation processing efficiency is high, enters and carries out degraded COD, BOD and ammonia nitrogen, makes the CODCr≤450mg/L in the waste water discharged, SS≤350mg/L, BOD5≤250mg/L, NH3-N≤28mg/L; Disinfection before discharge, makes pathogenic bacteria wherein, parasitic ovum and fly maggot go out extremely, reaches harmless in health.
Floating matter removal device in the present invention has the following advantages: the scraper plate hanger bracket that scraper plate can be made when backhaul to remain on lifting status is fixed scraper plate, make suspended substance to be stacked into scraper plate stroke initiating terminal during scraper plate backhaul, therefore go that efficiency during suspended substance is high, the scraper plate part be positioned on liquid level is not easy dirty.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of electroplating waste water treatment system.
Fig. 2 is the perspective view of the embodiment one of floating matter removal device.
Fig. 3 be floating matter removal device only draw scraper plate and scraper plate hanger bracket time a left side look schematic diagram.
Fig. 4 is the schematic top plan view of the embodiment two of floating matter removal device.
Fig. 5 is A-A cross-sectional schematic of Fig. 4.
Fig. 6 is the enlarged diagram of the refueling device in the embodiment three of floating matter removal device.
Fig. 7 is the schematic diagram that refueling device corrodes when breaking a floating chamber.
Fig. 8 is the schematic diagram that refueling device corrodes when breaking two floating chambers.
In figure: mud deposits pond 1, solid-liquid separating machine 2, metal ion treatment device 3, anaerobic digester 4, anaerobic precipitation pond 5, first sludge reflux passage 6, first sludge pump 7, equalizing tank 8, floating matter removal device 9, wastewater disposal basin 91, slag notch 911, slide rail front support stand 912, scraper plate lifting trigger member 913, slide rail rear support stand 914, scraper plate decline trigger member 915, gas pipe network 916, valve 917, curved reflecting surface 918, liquid outlet 919, determine slide rail 92, scraper plate hanger bracket 93, suspending piece 931, vertical rod 932, transverse axis 933, fork 934, epimere 9341, hypomere 9342, scraper plate lifts a gag lever post 935, scraper plate puts down a gag lever post 936, roller 937, counterbalance weight 938, the hinged place 939 of transverse axis and fork, telescoping mechanism 94, cylinder body 941, stretch out chamber 9411, indentation chamber 9412, piston rod 942, piston 943, first tracheae 944, second tracheae 945, scraper plate 95, impeller 96, impeller shaft 961, impeller vane 962, transfer lime 963, valve actuating mechanism 97, dynamic plate 971, first inlet mouth 9711, second inlet mouth 9712, 3rd import 9713, rotating shaft 972, drive-motor 973, determine plate 974, first air outlet 9741, second air outlet 9742, 3rd air outlet 9743, first annular air channel 9751, second annular air channel 9752, 3rd annular air channel 9753, air pump 98, air pump outlet 981, refueling device 99, storage tank 991, cavity 9911, oil outlet 9912, sealing membrane 9913, oil discharge passage 992, oil-feed bucket 9921, rupture of membranes bar 993, corrosive fluid bin 994, the saturating formula floating drum 995 of regular corruption, shell 9951, dividing plate 9952, floating chamber 9953, guide rod 996, corrosive fluid 997, union lever 998, second sludge pump 10, overflow port 11, sludge outlet 12, 3rd sludge pump 13, second whizzer 14, first lift pump 16, pH value regulating tank 17, liquid caustic soda storage tank 18, alkali lye volume pump 19, Ammonia blowing-out tower 20, induced draft fan 21, acid absorption column 22, diluted acid storage tank 23, diluted acid transferpump 24, ammonium salt hold-up vessel 25, recycle pump 26, ammonium salt outlet valve 27, concentrated acid hold-up vessel 28, neutralization tank 29, one-level anoxic pond 30, second lift pump 31, one-level Aerobic Pond 32, secondary anoxic pond 33, secondary Aerobic Pond 34, second pond 35, sterilization pool 36, water discharge valve 37, gas blower 38, one-level mixed-liquor return passage 39, one-level mixed-liquor return pump 40, secondary mixed-liquor return passage 41, secondary mixed-liquor return pump 42, second sludge reflux passage 43, 4th sludge pump 44, the molten medicine groove 45 of chlorinated lime, sodium hypochlorite solution volume pump 46, first whizzer 47.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is further illustrated.
See Fig. 1, a kind of electroplating waste water treatment system, comprises solid-liquid separating machine 2.Solid-liquid separating machine is existing installation.The liquid outlet of solid-liquid separating machine 2 with the wastewater disposal basin 91(of floating matter removal device 9 see Fig. 3) be docking together.The liquid outlet 919 of floating matter removal device 9 is docking together by the import of pipeline with metal ion treatment device 3.Metal ion treatment device 3 is existing installation.The liquid outlet of metal ion treatment device 3 is communicated with anaerobic digester 4.Anaerobic digester 4 is communicated with anaerobic precipitation pond 5.The first sludge reflux passage 6 is provided with between anaerobic precipitation pond 5 and anaerobic digester 4.First sludge reflux passage 6 is provided with the first sludge pump 7.Anaerobic precipitation pond 5 is communicated with equalizing tank 8.Anaerobic precipitation pond 5 and mud are deposited between pond 1 and are provided with the second sludge pump 10.Mud is deposited pond 1 and is provided with overflow port 11 and sludge outlet 12.Overflow port 11 is communicated with anaerobic digester 4 by pipeline.Sludge outlet 12 is docking together with the import of the 3rd sludge pump 13.The import of same second whizzer 14 of outlet of the 3rd sludge pump 13 is docking together.Second dewatering centrifuge 14 is horizontal centrifuge.The liquid outlet of the second whizzer 14 is linked together by the import of pipeline with anaerobic digester 4.The import of the first lift pump 16 is provided with the suction pipe stretching into equalizing tank 8.The outlet of the first lift pump 16 connects with an import of pH value regulating tank 17.Another import of pH value regulating tank 17 is docking together with the exit end of alkali lye volume pump 19.The import of alkali lye volume pump 19 is docking together with the exit end of liquid caustic soda storage tank 18.The fluid inlet that the outlet of pH value regulating tank 17 with Ammonia blowing-out tower 20 is is docking together.The inlet mouth of Ammonia blowing-out tower 20 is docking together with the outlet of induced draft fan 21.The ammonia outlet of Ammonia blowing-out tower 20 is docking together by the inlet mouth of pipeline with acid absorption column 22.The acid inlet of acid absorption column 22 is docking together by the outlet of diluted acid transfer lime with diluted acid storage tank 23.Diluted acid transfer lime is provided with diluted acid transferpump 24.The outlet of acid diluted acid tower 22 is docking together by the import of recycle pump 26 with ammonium salt hold-up vessel 25.The outlet of recycle pump 26 is also docking together with the refluxing opening of ammonia diluted acid tower 22.Ammonium salt hold-up vessel 25 is provided with ammonium salt outlet valve 27.The liquid outlet of Ammonia blowing-out tower 20 is communicated with neutralization tank 29 by pipeline.Liquid in neutralization tank 29 flows to one-level anoxic pond 30 by the second lift pump 31.One-level anoxic pond 30, one-level Aerobic Pond 32, secondary anoxic pond 33, secondary Aerobic Pond 34, second pond 35 and sterilization pool 36 are docking together successively.Sterilization pool 36 is provided with water discharge valve 37.One-level anoxic pond 30, one-level Aerobic Pond 32, secondary anoxic pond 33 and secondary Aerobic Pond 34 4 form anaerobic-aerobic pond.One-level mixed-liquor return passage 39 is provided with between one-level Aerobic Pond 32 and one-level anoxic pond 30.One-level mixed-liquor return passage 39 is provided with one-level mixed-liquor return pump 40.Secondary mixed-liquor return passage 41 is provided with between secondary Aerobic Pond 34 and secondary anoxic pond 33.Secondary mixed-liquor return passage 41 is provided with secondary mixed-liquor return pump 42.The second sludge reflux passage 43 is provided with between second pond 35 and one-level anoxic pond 30.Second sludge reflux passage 43 is provided with the 4th sludge pump 44.The inlet communication in pond 1 is also deposited in the outlet of the 4th sludge pump 44 with mud.The outlet of concentrated acid hold-up vessel 28 is communicated with neutralization tank 29 by pipeline.The air outlet of gas blower 38 is inputted in neutralization tank 29, one-level Aerobic Pond 32 and secondary Aerobic Pond 34 by pipeline simultaneously.Liquid in the molten medicine groove 45 of chlorinated lime flows to sterilization pool 36 by sodium hypochlorite solution volume pump 46.
A treatment process for electroplating wastewater, carries out solid-liquid separation by solid-liquid separating machine 2 pairs of electroplating wastewaters.
After the isolated residue press dewatering of solid-liquid separating machine 2, pack transports landfill yard sanitary landfill to.
After solid-liquid separating machine 2 pre-treatment isolated liquid remove the suspended substances such as the foam in electroplating wastewater by floating matter removal device 9.
The liquid of removing suspended substance removes the heavy metal ion in electroplating wastewater by removal of heavy metal ions device 3.Equipment and process in this step is existing technique.
Liquid after heavy-metal ion removal enters the first whizzer 47 and carries out processed.By centrifugation, the water in liquid is separated further with the SS in water.Limpid for ensureing water outlet, before the first whizzer 47, add flocculation agent (PAM), improve the flocculating effect of SS in waste water, improve the dewatering efficiency of the first whizzer 47 simultaneously.The addition of PAM is 5 milligrams per liter.
The dry mud of the isolated oxygen enrichment of first whizzer 47 delivers to fertilizer production apparatus process.Landfill can certainly be transported outward.
The isolated liquid of first whizzer 47 delivers to anaerobic digester 4.Liquid in anaerobic digester 47 by the effect of anaerobion, make the organic substance decomposing in electroplating wastewater transform into the materials such as methane and carbon dioxide.Arrange collecting methane pipe, the gas discharging containing biogas digestion generated enters methane utilizing system and is used.Liquid after Anaerobic Digestion flows in anaerobic precipitation pond 5 and precipitates.A mud part in anaerobic precipitation pond 5 is discharged in sewage sludge storage pond 1 by the second sludge pump 10.
Mud portion in anaerobic precipitation pond 5 is back in anaerobic digester 4 by the first sludge pump 7.
Supernatant fluid in anaerobism Chen Dian pond 5 flows into equalizing tank 8.By stirrer stirring and adjusting water quality and quantity in equalizing tank 8.
Liquid transfer adjusted in equalizing tank 8 carries out deamination process to Ammonia blowing-out tower 20 by the method that air-blowing is de-.Ammonia nitrogen in electroplating wastewater is after the anaerobic treatment in anaerobic digester, and protein, through degraded, also can cause the rising of ammonia nitrogen.The ammonia nitrogen of high density has bio-toxicity, not only can suppress the growth of aerobic bacteria, also can cause sludge bulking because of the imbalance of carbon-nitrogen ratio, biochemical system is made to be difficult to normal operation, therefore increase ammonia nitrogen remove treatment step after, not only can recycle ammonia nitrogen, reduce the smell of liquid, also make follow-up processing efficiency higher.
Processed by air stripping method in the present embodiment.Air water ratio is 2000:1 ~ 2400:1.
Concrete treating processes is: the liquid flowed out in equalizing tank 8 is transported in pH value regulating tank 17 by the first lift pump 16,22% sodium hydroxide solution in liquid caustic soda storage tank 18 is transported in pH value regulating tank 17 by alkali lye volume pump 19 on the filler that pH value is adjusted to and sprays through recycle pump after 8.5 ~ 9.4 in Ammonia blowing-out tower 20 and contacts with the air that induced draft fan 21 blasts, the free ammonia dissolved in liquid is through liquid-gas interface, to gas phase transfer, thus reach the object of removal of ammonia and nitrogen.The ammonia nitrogen (i.e. ammonia) of discharging with gaseous state enters acid absorption column 22, and with the acid solution being transported to acid absorption column 22 from diluted acid storage tank 23, (in the present embodiment is sulphuric acid soln, certain nitric acid hydrochloric acid can) reaction generate ammonium salt solution, ammonium salt solution flows in ammonium salt hold-up vessel 25, recycles ammonium salt.Acid solution utilizes again from newly getting back to acid absorption column.
Liquid after ammonia aeration with export in concentrated acid hold-up vessel 28 88% sulphuric acid soln in neutralization tank 29 in and be carry out degraded COD, BOD and ammonia nitrogen after 7.0 ~ 8.4 to pH value.
The detailed process of carrying out degraded COD, BOD and ammonia nitrogen is: liquid enters one-level anoxic pond 30 by the second lift pump 31.Macromolecular organic matter degradation is small organic molecule by the anaerobic bacterium in one-level anoxic pond 30, and effectively opposing hazardous and noxious substances infringement, improve the biochemical of waste water, under anoxic conditions, denitrifying bacterium utilizes the organism in former water to carry out anti-nitration reaction for what reflux in carbon source and one-level Aerobic Pond containing the mixed solution of nitric nitrogen, nitric nitrogen in water is converted into nitrogen, thus eliminates the ammonia nitrogen in water; Then enter one-level Aerobic Pond 32, organism most of in water absorbs by the aerobic bacteria in one-level Aerobic Pond under Effect of Dissolved Oxygen to be decomposed, and is converted into CO
2with self organism, the ammonium oxidation in water is also become nitric nitrogen by Simultaneous Nitrification bacterium, makes mixed solution partial reflux, enter one-level anoxic pond 30 by one-level mixed-liquor return pump 40.Through coagulation, COD, BOD and NH
3-N is significantly degraded.Then liquid enters secondary and processes, and the process of second-stage treatment is identical with the treating processes of one-level.Second-stage treatment equipment comprises secondary anoxic pond 33 and secondary Aerobic Pond 34.COD, BOD and NH
3-N is degraded again.In present treatment technique, anoxic pond adopts stirrer to stir, and Aerobic Pond adopts gas blower 38 aeration.
The liquid processed in secondary Aerobic Pond 34 flows into second pond 35.Second pond 35 pairs of liquid carry out mud-water separation.
Sludge part loop in second pond 35 is to one-level anoxic pond 33.The benefit of sludge reflux is: be conducive to the content maintaining bacterium in anoxic pond, make the reliable for effect and controlled of anoxic digestion process, COD, BOD and NH in liquid
3-N is fully degraded.
Excess sludge in second pond 35 is discharged in sewage sludge storage pond 1 by the 4th sludge pump 44.
In second pond 35, isolated water enters sterilization pool 36.Adopt chlorinated lime to carry out disinfection in sterilization pool 36, the waste water after sterilization gets final product qualified discharge.
1 pair, sewage sludge storage pond mud plays again the effect of mud-water separation, and the water on upper strata overflows in equalizing tank 8 through liquid head piece 11.
Lower floor's mud in mudpan 1 is transported in the second whizzer 14 by the 3rd sludge pump 13 and carries out processed.Also PAM is added in this step.
The water that second whizzer 14 is deviate from is transported to anaerobic digester 4 to reduce environmental pollution, can not cause interference to municipal sewage system.
The lean foster dry mud produced carries out outward transport landfill disposal.
See Fig. 2, floating matter removal device 9 comprises wastewater disposal basin 91, determines slide rail 92, scraper plate hanger bracket 93 and telescoping mechanism 94.
The front end of wastewater disposal basin 91 is provided with slag notch 911, slide rail front support stand 912 and liquid outlet 919.The width of the width (in figure, left and right directions is width) of slag notch 911 and the internal space of wastewater disposal basin 91 is equal.Slide rail front support stand 912 is provided with scraper plate lifting trigger member 913.Scraper plate lifting trigger member 913 is the block of rod-like structure.Scraper plate lifting trigger member 913 has two.The rear end of wastewater disposal basin 91 is provided with slide rail rear support stand 914.Slide rail rear support stand 914 is provided with scraper plate decline trigger member 915.Scraper plate decline trigger member 915 is the block of rod-like structure.Scraper plate decline trigger member 915 has two.
Determine slide rail 92 to extend along the fore-and-aft direction of wastewater disposal basin 91.The front end of determining slide rail 92 is fixed on slide rail front support stand 912.The rear end of determining slide rail 92 is fixed on slide rail rear support stand 914.
Scraper plate hanger bracket 93 comprises suspending piece 931, vertical rod 932, transverse axis 933, fork 934, scraper plate lifts a gag lever post 935 and scraper plate puts down a gag lever post 936.Suspending piece 931 is provided with the roller 937 that two rows distribute along the longitudinal direction.Suspending piece 931 is supported on slide rail 92 by roller 937.Upper end and the suspending piece 931 of vertical rod 932 link together.Transverse axis 933 is connected to the lower end of vertical rod 932.Transverse axis 933 extends in left-right direction.Fork 934 has two.Two forks 934 distribute in left-right direction.The middle part of two forks 934 is rotationally connected with the two ends, left and right of transverse axis 933.The upper end of fork 934 is provided with counterbalance weight 938.The lower end of fork 934 is connected with scraper plate 95.Scraper plate lifts a gag lever post 935 and scraper plate and puts down a gag lever post 936 and be connected in vertical rod 932.Scraper plate lifts a gag lever post 935 and scraper plate puts down the top that a gag lever post 936 is positioned at transverse axis 933.Scraper plate lifts a gag lever post 935 and scraper plate puts down the below that a gag lever post 936 is positioned at guide rail 92.Scraper plate lifts a gag lever post 935 and scraper plate and puts down a gag lever post 936 and extend in left-right direction.Scraper plate lifts a gag lever post 935 and scraper plate and puts down upper end that a gag lever post 936 is distributed in both sides, the i.e. fork 934 of the upper end of fork 934 along the longitudinal direction and lift a gag lever post 935 and scraper plate puts down between a gag lever post 936 at scraper plate.
Telescoping mechanism 94 is cylinder.Cylinder comprises cylinder body 941 and piston rod 942.Piston rod 942 extends along the longitudinal direction.Piston rod 942 and suspending piece 931 are fixed together.Cylinder body 941 and determine slide rail 92 and be fixed together.Cylinder body 941 is positioned at the rear of suspending piece 931.
See Fig. 3, vertical rod 932 is between two row's rollers 937.Fork 934 comprises epimere 9341 and hypomere 9342.Lower end and hypomere 9342 upper end of epimere 9341 link together with the form of integrative-structure.Transverse axis 33 is connected to the junction of epimere 9341 and hypomere 9342.Transverse axis 933 and fork 934 are together with hinge, and the hinged place 939 of transverse axis and fork is positioned at the middle part of fork.Counterbalance weight 938 is connected to the upper end of epimere 9341.Scraper plate 95 is connected to the lower end of hypomere 9342.
See Fig. 2 and composition graphs 3, the present invention is also provided with control device and liquid level switch (not drawing in figure).During original state, telescoping mechanism 94 is in contraction schedule, scraper plate 95 is positioned at the rear end of scraper plate stroke initiating terminal and wastewater disposal basin 91, the process middle scraper decline trigger member 915 that telescoping mechanism 94 shrinks and makes scraper plate move to scraper plate stroke initiating terminal is clashed into the epimere 9341 of fork 934 and makes fork 934 according to the C in Fig. 3 to rotation, then continue to swing to epimere 9341 at the action of gravity draft link 934 of counterbalance weight 938 to be connected to scraper plate and to put down on a gag lever post 936 and to remain on this position, now scraper plate 95 is in and puts down position and low level, when wastewater disposal basin 91 li of suspended substances increase, liquid level rises, liquid level detecting switch is connected, control device makes telescoping mechanism 94 stretch out, telescoping mechanism 94 drives scraper plate hanger bracket 93 together with scraper plate 95 along front end and the scraper plate stroke end end of determining slide rail 92 and move forward to wastewater disposal basin.Scraper plate 95 pushes slag notch 911 to the suspended substance being suspended in liquid level in wastewater disposal basin 91, and suspended substance is discharged wastewater disposal basin 91.Meanwhile, epimere 9421 is clashed into by scraper plate lifting trigger member 913, fork 934 to be connected to scraper plate with transverse axis 933 and to lift and to stop after on a gag lever post 916 and stably remain on this position under the effect of counterbalance weight 938 for axle turns to, now scraper plate 95 lifting goes out liquid level and remains to telescoping mechanism 94 to be always retracted into fork 934 and to strike scraper plate lifting trigger member 915, if liquid level is also more than setting height, continues above action otherwise scraper plate 95 rests on scraper plate stroke initiating terminal.After suspended substance is removed, open liquid outlet 919, make the next operation of flow direction.
Embodiment two, see Fig. 4, the difference with embodiment one is: floating matter removal device also comprises impeller 96, transfer lime 963, air pump 98, valve actuating mechanism 99 and gas pipe network 916.The cylinder forming telescoping mechanism 94 also comprises piston 943.Cylinder body 941 is divided into and stretches out chamber 9411 and indentation chamber 9412 by piston 943.The one end of stretching out same first tracheae 944 in chamber 9411 links together.Indentation chamber 9412 links together with one end of the second tracheae 945.
The impeller vane 962 that impeller 96 comprises impeller shaft 961 and is connected on impeller shaft.Impeller vane 962 is arranged in transfer lime 97.The drive shaft of impeller shaft 961 and air pump 98 links together.
Valve actuating mechanism 97 comprises dynamic plate 971, rotating shaft 972 and motor 973.Dynamic plate 971 is provided with the first inlet mouth 9711, second inlet mouth 9712 and the 3rd import 9713.First inlet mouth 9711, second inlet mouth 9712 and the 3rd import 9713 be distributed in same with rotating shaft 972 for the center of circle circumferentially.Motor 973 is stepper-motor.
See Fig. 5, wastewater disposal basin 91 sidewall is provided with curved reflecting surface 918.The surrounding of wastewater disposal basin 91 is provided with as dry gas mouth 917.The outlet of valve 917 is inner towards wastewater disposal basin 91.Air pump 98 is provided with air pump outlet 981.Valve actuating mechanism 97 also comprises determines plate 974.Dynamic plate 971 sealed rotational is connected to determines on plate 974.Determine between plate 974 and dynamic plate 973, to be provided with the first annular air channel 9751, second annular air channel 9752 and the 3rd annular air channel 9753.First annular air channel 9751, second annular air channel 9752 and the 3rd annular air channel 9753 three and rotating shaft 972 coaxial.Rotating shaft 972 is fixed on the upper surface of dynamic plate 971.Determine plate 974 and be provided with the first air outlet 9742, air outlet 9741, second and the 3rd air outlet 9743.First air outlet 9741 is communicated with the first inlet mouth 9711 by the first annular air channel 9751.Second air outlet 9742 is communicated with the second inlet mouth 9712 by the second annular air channel 9752.3rd air outlet 9743 is communicated with the 3rd inlet mouth 9713 by the 3rd annular air channel 9753.First air outlet 9741 links together with the other end of the first tracheae 944.Second air outlet 9742 links together with the other end of the second tracheae 945.The import of nozzle 917 is linked together by gas pipe network 916 and the 3rd air outlet 9743.
During use, the waste gas of the electroplating chamber that blower fan is discharged is transported in wastewater disposal basin 91 through transfer lime 963.During original state, air pump outlet 981 is docking together with the 3rd inlet mouth 9713 sealing, when coating cloud flows through transfer lime 97, drives impeller 96 is rotated, impeller 96 drives air pump 98 to work, and the pressurized gas that air pump 98 produces is discharged after air pump outlet the 981, the 3rd inlet mouth 9713, the 3rd air flue 9753, the 3rd air outlet 9743 and gas pipe network 916 from valve 917.Valve 917 expellant gas towards the liquid level diffluence of wastewater disposal basin 91, thus plays the effect stoping the exhaust emissions in waste gas and wastewater disposal basin to go out wastewater disposal basin 91.When liquid level switch detect liquid level reach setting height namely need row paint slag time, control device make motor 973 rotate set angle to the first inlet mouth 9711 with air pump outlet 981 sealing be docking together, the gas that now air pump 98 produces enters through air pump outlet the 981, first inlet mouth 9711, first air flue 9751, first air outlet 9741 and the first tracheae 944 and stretches out in chamber 9411, telescoping mechanism 94 stretches out, and all the other processes are not repeated with embodiment is the same.When telescoping mechanism 94 stretch out put in place and need retract time, control device make motor 973 rotate set angle to the second inlet mouth 9712 with air pump outlet 981 sealing be docking together, the gas that now air pump 98 produces enters in indentation chamber 9412 through air pump outlet the 981, second inlet mouth 9712, second air flue 9752, second air outlet 9742 and the second tracheae 945, the gas stretched out in chamber 9411 is discharged from the first inlet mouth 9711, telescoping mechanism 94 indentation, all the other processes are not repeated with embodiment is the same.
When the liquid generation in wastewater disposal basin 91 is cleaved and poured into wastewater disposal basin 91 side, reflection liquid is gone back to wastewater disposal basin 91 inside and reduces the wastewater flow rate sputtering wastewater disposal basin outside by curved reflecting surface 918.
Embodiment three, the difference with described example two is:
See Fig. 6, floating matter removal device also comprises refueling device 99.Refueling device 99 comprises storage tank 991, oil discharge passage 992, rupture of membranes bar 993, corrosive fluid bin 994, regularly rotten formula floating drum 995 and guide rod 996 thoroughly.
Storage tank 991 is linked together with the saturating formula floating drum 995 of regularly corruption by union lever 998.Union lever 998 and regularly corruption are detachably connected by bolt between formula floating drum 995 thoroughly.It is 4 sheathed successively and cavitys 9911 be fixed together that storage tank 991 comprises at least two the present embodiment.Lubricating oil (not drawing in lubricating oil figure) is housed in cavity 9911.The lower wall of cavity 9911 is provided with oil outlet 9912.Oil outlet 9912 is sealedly connected with sealing membrane 9913.4 oil outlets 9912 of amounting to of 4 cavitys to be positioned on the vertical straight line of same and to be positioned at directly over rupture of membranes bar 993.Distance between adjacent sealing membrane is equal.
One end of oil discharge passage 992 is provided with the hinged place 939(of same fork and transverse axis see Fig. 3) zerk that aligns.Oil discharge passage 992 the other end is provided with the oil-feed bucket 9921 be positioned at below storage tank.Oil-feed bucket 9921 is fixed together with suspending piece 931.
Rupture of membranes bar 993 vertically extends.The lower end of rupture of membranes bar 993 is connected in oil-feed bucket 9921.Rupture of membranes bar 993 is positioned at the below of storage tank 991.
Corrosive fluid bin 994 is positioned at the below of storage tank 991.Corrosive fluid bin 994 is fixed together with suspending piece 931.
The saturating formula floating drum 995 of regular corruption is positioned at corrosive fluid bin 994.The saturating formula floating drum 995 of regular corruption comprises rotproofness shell 9951 and four pieces of dividing plates 9952 of lower ending opening.Dividing plate 9952 is aluminium sheet.Dividing plate 9952 distributes along the vertical direction.Shell 9951 is divided into 4 floating chambers distributed along the vertical direction 9953 by dividing plate 9952.Distance between adjacent dividing plate is equal.Distance between adjacent dividing plate equals the distance between adjacent sealing membrane.
Guide rod 996 vertically extends.One end of guide rod 996 is fixed together with storage tank 991.Storage tank 991 higher than the hinged place 939(of fork and described transverse axis see Fig. 3).The other end of guide rod 996 is located in suspending piece 931 slidably.
See Fig. 7, when refueling device will be started, corrosive fluid 997 is injected in corrosive fluid bin 994, regular rotten formula floating drum 995 thoroughly floats and realizes out floating of fuel tank 991 by corrosive fluid 997, stops adding corrosive fluid when fuel reserve tank 991 floats the distance being less than between adjacent sealing membrane to the distance between rupture of membranes bar 993 and the sealing membrane in outermost layer cavity.Storage tank 991 can both float by buoyancy that each floating chamber 9953 produces independently.In the present embodiment, corrosive fluid 997 is sodium hydroxide solution.By the concentration of control corrosion rate liquid 997 or/and the thickness of dividing plate, make the dividing plate liquid 997 that is corroded in setting duration corrode broken, these data can be learnt by test.
When the time of pouring corrosive fluid 997 into reaches a setting duration, the dividing plate being positioned at bottom in dividing plate 9952 is corroded brokenly, corrosive fluid enters the floating chamber being arranged in bottom in floating chamber 9953, second floating chamber that storage tank 991 drops to by counting from below to up in floating chamber 9953 floats, the sealing membrane 9913-1 being arranged in outermost layer cavity in decline process is poked by rupture of membranes bar 993, lubricating oil in cavity 9911 in outermost cavity is flow in oil discharge passage 992 to flow between setting die and holding pad by the oil outlet of correspondence and carries out a self-oiling to slideway mating surface.
See Fig. 8, when the time of pouring corrosive fluid 997 into reaches two setting durations, be positioned at time dividing plate of below in dividing plate 9952 to be also corroded brokenly, corrosive fluid enters in floating chamber 9953 and is arranged in time floating chamber of below, the 3rd floating chamber that storage tank 991 drops to by counting from below to up in floating chamber 9953 floats, the sealing membrane being arranged in time outer cavity in decline process is also poked by rupture of membranes bar 993, lubricating oil in cavity 9911 in secondary outer field cavity drops onto in oil discharge passage 992 to flow between setting die and holding pad after being flowed out by the oil outlet on secondary outer cavity and the oil outlet in outermost layer cavity and carries out self-oiling again to slideway mating surface, the like, four self-oilings can be carried out in the present embodiment, then change automatic fuelling device and carry out self-oiling again.
Claims (6)
1. an electroplating waste water treatment system, it is characterized in that, comprise acid absorption column, and the solid-liquid separating machine be docking together successively, floating matter removal device and metal ion treatment device, the liquid outlet of described metal ion treatment device is provided with the anaerobic digester docked successively, anaerobic precipitation pond, Ammonia blowing-out tower, Anoxic/Aerobic pond, second pond and sterilization pool, acid absorption column links together for absorbing ammonia with Ammonia blowing-out tower, floating matter removal device comprises the wastewater disposal basin being provided with slag notch and liquid outlet, strike off the scraper plate of the suspended substance on wastewater disposal basin liquid level, the telescoping mechanism driving scraper plate reciprocating and scraper plate hanger bracket, described scraper plate hanger bracket comprises vertical rod and fork, described vertical rod is connected with described telescoping mechanism, the upper end of described vertical rod is connected with scraper plate and lifts a gag lever post and scraper plate puts down a gag lever post, described vertical rod lower end is provided with transverse axis, middle part and the described transverse axis of described fork are hinged, described scraper plate is connected to the lower end of described fork, the upper end of described fork is provided with counterbalance weight, a gag lever post is lifted and scraper plate puts down between a gag lever post at scraper plate in the upper end of described fork, the telescopic direction of described telescoping mechanism is identical with the direction of motion of described scraper plate, described floating matter removal device also comprises refueling device, described refueling device comprises storage tank, oil discharge passage, rupture of membranes bar and corrosive fluid bin, described oil discharge passage is used for the hinged place lubricating oil in described storage tank being transported to described fork and described transverse axis, described storage tank comprises at least two sheathed successively and cavitys be fixed together, the lower wall of described cavity is provided with oil outlet, described oil outlet is sealedly connected with sealing membrane, described rupture of membranes bar vertically extends and is positioned at the below of storage tank, described rupture of membranes bar, and the oil outlet of all cavitys is all positioned on same vertical curve, regularly rotten formula floating drum is thoroughly provided with in described corrosive fluid bin, described regular corruption saturating formula floating drum comprises the rotproofness shell of lower ending opening and some corrosive fluids by being corroded in liquid bin expend the broken dividing plate of setting duration corrosion, described shell divide is gone out some floating chambers by described dividing plate, the quantity of described floating chamber is equal with the quantity of described cavity, described dividing plate distributes along the vertical direction, described storage tank floats on the corrosive fluid in described corrosive fluid bin by described floating drum, described storage tank can both float by floating chamber independently described in each, corrosive fluid in corrosive fluid bin often corrode brokenly a floating chamber and cause that storage tank declines in process once, described rupture of membranes bar only can poke sealing membrane on a cavity.
2. electroplating waste water treatment system according to claim 1, it is characterized in that, described floating matter removal device also comprises makes scraper plate be transformed into the scraper plate lifting trigger member of lifting position by putting down position and make scraper plate be transformed into by lifting position the scraper plate decline trigger member putting down position, described scraper plate lifting trigger member is positioned at scraper plate stroke end end, described scraper plate decline trigger member is positioned at scraper plate stroke initiating terminal, and described scraper plate decline trigger member and scraper plate lifting trigger member are all the block that same fork coordinates.
3. electroplating waste water treatment system according to claim 1 and 2, it is characterized in that, described floating matter removal device also comprise along scraper plate travel direction extend determine slide rail, the upper end of described vertical rod is provided with suspending piece, described suspending piece is provided with the roller that two rows distribute along scraper plate travel direction, described suspending piece is determined slide rail by described roller be connected with described, and described vertical rod is between two row's rollers.
4. electroplating waste water treatment system according to claim 1 and 2, it is characterized in that, described floating matter removal device also comprises the impeller waste gas in electroplating chamber being transported to transfer lime, air pump and driving air pump in wastewater disposal basin, described impeller is arranged in transfer lime, described telescoping mechanism is cylinder, and described cylinder is by described impeller-driven.
5. electroplating waste water treatment system according to claim 4, it is characterized in that, described floating matter removal device also comprises valve actuating mechanism, the surrounding of described wastewater disposal basin is provided with valve, the outlet of described valve is inner towards wastewater disposal basin, described air pump is provided with air pump outlet, described valve actuating mechanism comprises determines plate and sealed rotational is connected to the dynamic plate determining plate, describedly determine to be provided with the first annular air channel between plate and dynamic plate, second annular air channel and the 3rd annular air channel, described first annular air channel, second annular air channel and the 3rd annular air channel three and dynamic plate coaxial, described determine plate be provided with first annular air channel be communicated with the first air outlet, the 3rd air outlet that the second air outlet be communicated with the second annular air channel is communicated with the 3rd annular air channel, described dynamic plate is provided with the first inlet mouth be communicated with the first annular air channel, the 3rd inlet mouth that the second inlet mouth be communicated with the second annular air channel is communicated with the 3rd annular air channel, described cylinder comprises cylinder body and piston, described cylinder body is divided into and stretches out chamber and indentation chamber by described piston, described chamber of stretching out is connected with described first air outlet, described indentation chamber is connected with described second air outlet, the import of described valve is connected with described 3rd air outlet, described first inlet mouth, second inlet mouth and the 3rd inlet mouth three be distributed in centered by dynamic plate axis circumferentially and can with described air pump outlet docking.
6. electroplating waste water treatment system according to claim 1 and 2, is characterized in that, described wastewater disposal basin sidewall is provided with the curved reflecting surface making the reflection liquid pouring into wastewater disposal basin side return wastewater disposal basin.
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| CN106630395A (en) * | 2016-11-30 | 2017-05-10 | 中节能（沧州）环保能源有限公司 | Leachate sewage treatment method |
| CN108675128A (en) * | 2018-06-09 | 2018-10-19 | 东莞市日野化工科技有限公司 | A kind of full-automatic novel anode is with plating overhead traveling crane equipment |
| CN109019839B (en) * | 2018-08-29 | 2021-11-19 | 广州市环境保护工程设计院有限公司 | Lifting aeration oxygenation system |
| CN110567063B (en) * | 2019-07-29 | 2020-12-08 | 贵州红桥欣昇科技有限公司 | Air purification equipment |
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| CN103395933A (en) * | 2013-08-02 | 2013-11-20 | 江苏和顺环保股份有限公司 | Processing technology for electroplating wastewater and heavy metal wastewater |
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Address after: 316000 No. 127 Datong Road, Zhujiajian street, Putuo District, Zhoushan, Zhejiang Patentee after: Zhejiang Ocean University Address before: 316000 No. 127 Datong Road, Zhujiajian street, Putuo District, Zhoushan, Zhejiang Patentee before: ZHEJIANG OCEAN University |
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Application publication date: 20141119 Assignee: Zhoushan Huazheng Material Technology Co.,Ltd. Assignor: Zhejiang Ocean University Contract record no.: X2023980046527 Denomination of invention: Electroplating wastewater treatment system Granted publication date: 20160203 License type: Common License Record date: 20231109 |
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