CN202968282U - Processing equipment of rare earth wastewater - Google Patents

Processing equipment of rare earth wastewater Download PDF

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Publication number
CN202968282U
CN202968282U CN 201220626570 CN201220626570U CN202968282U CN 202968282 U CN202968282 U CN 202968282U CN 201220626570 CN201220626570 CN 201220626570 CN 201220626570 U CN201220626570 U CN 201220626570U CN 202968282 U CN202968282 U CN 202968282U
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China
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water
reactor
rare earth
catalyzed oxidation
oxidation tower
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CN 201220626570
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Chinese (zh)
Inventor
韩正昌
王志磊
朱家明
韩峰
季军
柴慧丽
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NANJING GREEN-WATER ENVIRONMENT ENGINEERING Co Ltd
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NANJING GREEN-WATER ENVIRONMENT ENGINEERING Co Ltd
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Abstract

The utility model discloses a processing equipment of rare earth wastewater, wherein rare earth extracting wastewater reaches standard and is finally discharged after respectively passing through an efficient heavy-removing denitrification reactor, a rare earth recovery reactor, an air floating device, an adjusting pond, a neutral reaction tank, a neutral settling tank, a middle water body, a prefilter, a catalytic oxidation tower, a chemical settling tank and a settling pond. By adopting the method and equipment for processing the rate earth wastewater, long-term and stable up-to-standard discharge of the rare earth wastewater is achieved and ensured; and trace rare earth and an organic phases in the wastewater can be recycled as much as possible in the rare earth wastewater treatment process.

Description

A kind for the treatment of facility of RE waste water
Technical field
The utility model relates to the treatment process of RE waste water, belongs to technical field of waste water processing, is more specifically a kind of equipment that adopts physical chemistry method to process RE waste water.
Background technology
RE waste water is the trade effluent produced in the rare-earth smelting sepn process, production process is: content of rare earth obtains the mixed chlorinated rare earth feed liquid at 90% left and right rare earth ore concentrate through dissolving with hydrochloric acid, removal of impurities, then adopt P507, P204, naphthenic acid, kerosene etc. extract grouping or separate the mixed chlorinated rare earth feed liquid, obtain single rare earth or compound rare-earth compound solution, solution carries out the low temperature calcination after oxalic acid precipitation, cleaning, obtains rare earth oxide.
Because the industrial production of Rare Earth Enterprises extensively adopts the organic extractant phase Technology under acidic conditions, and extraction agent mainly take phosphorus extractant as main, the extraction wastewater produced in the production process that rare-earth smelting separates has high saliferous, oil-containing, be mainly the organic phases such as kerosene, P507, P204, the pollution factor such as strongly-acid, COD concentration are high, total phosphorus and ammonia nitrogen; By contain a large amount of heavy metals and radioelement in rare earth ore concentrate, as Cr, Cd, Pb, Zn, As, Th, U etc., this dvielement all enters in RE waste water in smelting process simultaneously, and the heavy metal element in waste water exceeds standard.Rare-earth smelting precipitation workshop section adopts again oxalic acid will extract the rare earth ion that workshop section's extraction obtains to be precipitated, and the precipitated crystal thing cleans in the precipitation waste water formed strongly-acid, contain the oxalic acid material, has the pollution factors such as high saliferous, high COD concentration, micro heavy.A large amount of RE waste water that contains all kinds of pollution factors is the important source that the rare-earth smelting separation industries is polluted, cause rare-earth smelting to separate the major reason of enterprise's surrounding enviroment and water pollution, be also the healthy and stable main factor for development of restriction rare-earth trade, strengthen RE waste water improvement technical research most important.
At present, the RE waste water technology of most domestic Rare Earth Production enterprise is the eighties research and development in last century, its main technique is to efflux after lime neutralization+precipitation+clarification, this technique is very simple but operating environment is poor, in its water outlet, the pollution factors such as COD, total phosphorus, oil, heavy metal exceed standard seriously, the surrounding enviroment environment is caused to great pollution, and Rare Earth Enterprises makes the development of whole rare-earth trade be subject to serious restriction to the destruction of environment.On the other hand, waste water treatment process technology and the management of original extensive style, all run off rare earth element useful in RE waste water, organic phase, and the rare earth yield is not high, the organic phase consumption is large, is unfavorable for the practice and extension of the clearer production technology of Rare Earth Enterprises.From 2010, after " rare-earth industry emission standard " issue, the wastewater discharge standard of Rare Earth Enterprises significantly improved, and the original waste water treatment process of Rare Earth Enterprises has lagged far behind national standard.Along with Chinese Ministry of Environmental Protection continues in depth to carry out the rare-earth trade environmental protection, verify, the environmental protection pressure of Rare Earth Enterprises further strengthens, and old waste water treatment process directly affects the important factor of enterprise's final and decisive juncture.
Summary of the invention
The problem existed for above-mentioned prior art, the utility model provides a kind for the treatment of facility of RE waste water, the qualified discharge that the RE waste water long period is stable is guaranteed in realization, simultaneously trace rare-earth and the organic phase in the RE waste water treating processes reclaims waste water as far as possible.
The problem existed for solving prior art, the technical scheme that the utility model is taked is: a kind for the treatment of process of RE waste water comprises the steps:
(1) rare earth extraction waste water is promoted and enters the efficient heavy denitrification reactor that removes through pump by the wastewater collection pond, and by adding except heavy medicament, coagulating agent, remove the heavy metal ion formation heavy metal slag in waste water, and the heavy metal slag drains into except heavy slag filter; Reduce the ammonia nitrogen concentration in waste water by adding the denitrogenation medicament; Described is sulfide except weighing medicament, preferably Na 2s, coagulating agent is polymerize aluminum chloride.Heavy metal in waste water and radioelement are mainly Cr, Cd, Pb, Zn, As, Th, U etc., adopt the sulfide precipitation clearance high, and applicable pH range is large; Described denitrogenation medicament is NaClO;
(2) after the efficient extraction wastewater of removing after heavy denitrification reactor is processed is mixed by pipeline static mixer with oxalic acid precipitation waste water, gravity flow enters rare earth and reclaims reactor, reclaim residual a small amount of rare earth in extraction wastewater, oxalic acid precipitation waste water, the rare earth of recovery enters to the rare earth slag strainer and carries out after pulp water separates regularly collecting; Describedly efficient except heavy denitrification reactor, rare earth reclaim reactor, all establish water-and-oil separator, reclaim the organic phase in waste water;
(3) rare earth reclaims the reactor water outlet and enters air-floating apparatus, and pressure air-dissolving water mixes generation air supporting effect with waste water, removes the oily substance of most suspended state oil, colloidal attitude and solubilised state in waste water;
(4) air-floating apparatus water outlet gravity flow enters equalizing tank;
(5) the equalizing tank water outlet promotes and enters the neutralization reaction tank with pump, by adding white lime, regulates waste water ph to pH > 8, after dosing coagulant, coagulant aids, flocculation agent, water outlet enters Neutralization settlement tank precipitation; Wherein, described coagulating agent adopts polymerize aluminum chloride, coagulant aids to adopt ferrous sulfate, and flocculation agent adopts polyacrylamide;
(6) water outlet of Neutralization settlement tank is from flowing into intermediate pool, promote through fore filter and remove suspended substance with pump, water outlet enters the catalyzed oxidation tower, by adding chemical oxidizing agent, waste water is carried out to catalyzed oxidation, remove on the one hand the COD in waste water, organophosphorus in phosphorus base organic phase remaining in waste water can be converted into to phosphate radical on the other hand, chemical oxidizing agent used is ozone;
(7) water outlet of catalyzed oxidation tower enters chemical settling tank precipitation after pipeline static mixer adds chemical dephosphorization medicament, flocculation agent, after adding the chemical dephosphorization medicament, the precipitation of the phosphate radical in waste water is removed, and reaches the purpose that reduces total phosphorus; Described chemical dephosphorization medicament is aluminium salt, molysite, and the flocculation agent of employing is polyacrylamide;
(8) water outlet of chemical settling tank enters settling pond, qualified discharge after the suspended substance in continuation clarification removal waste water.
Chemical settling tank in Neutralization settlement tank in step (6) and step (7) produce in and slag, chemical dephosphorization slag enter sludge thickener, sludge thickener bottom thickened sludge is promoted to the rear outward transport of being dewatered of sheet frame water extracter with pump and disposes.
The described waste gas produced in wastewater treatment process except heavy denitrification reactor, rare earth recovery reactor and air-floating apparatus is collected into emission-control equipment by the pipeline on the device top blind flange.
A kind of rare earth waste water treatment device, comprise: wastewater collection pond, pump, pipeline static mixer, efficient except heavy denitrification reactor, rare earth recovery reactor, air-floating apparatus, equalizing tank, neutralization reaction tank, Neutralization settlement tank, intermediate pool, fore filter, catalyzed oxidation tower, chemical settling tank and settling pond, described wastewater collection pond is connected except weighing the denitrification reactor water-in with efficient by pump, and the described efficient tapered bucket except heavy denitrification reactor bottom is connected with and removes heavy slag filter, the described efficient heavily denitrification reactor water outlet that removes is connected with the front end of pipeline static mixer, establishes pipeline opening in the middle of described pipeline static mixer and is connected with the oxalic acid precipitation wastewater inlet pipe, the end pipeline of pipeline static mixer is connected with the water-in that rare earth reclaims reactor, and the tapered bucket that described rare earth reclaims reactor is connected with the rare earth slag strainer by the rare earth recovery tube, the outlet conduit that described rare earth reclaims reactor is connected with air-floating apparatus, and described air-floating apparatus conical bottom bucket is connected with sludge thickener, described air-floating apparatus water outlet connects equalizing tank, and described equalizing tank is by pump connecting tube static mixer front end, the end of pipeline static mixer connects the neutralization reaction tank, described neutralization reaction tank water outlet connects the thrust-augmenting nozzle at Neutralization settlement tank center, the tapered bucket of described Neutralization settlement pot bottom is connected with sludge thickener, the water outlet of described Neutralization settlement tank is positioned at the tank body upper end, connect intermediate pool, the intermediate pool water outlet connects fore filter top water-in by pump, fore filter bottom water outlet connects the water-in of catalyzed oxidation tower upper end, the water outlet of catalyzed oxidation tower lower end connects chemical settling tank center thrust-augmenting nozzle, the tapered bucket of chemical settling pot bottom is connected with sludge thickener, the water outlet of chemical settling tank upper end connects settling pond.
Described efficient comprise except heavy denitrification reactor: except heavy reactor, multi-phase separation district and denitrification reactor, described except heavy reactor by overflowing the mouth of a river and the multi-phase separation district joins, described multi-phase separation district by opposite side overflow the mouth of a river and denitrification reactor joins.
Described all be furnished with whipping appts except weighing reactor and denitrification reactor inside; Described multi-phase separation is provided with the composite inclined tube packing in district, promotes the heavy metal sediment rapid precipitation except heavily reaction generates.
Describedly be connected with two chemicals dosing plants except heavy reactor water-in, be respectively used to add except heavy medicament and coagulating agent, wherein, described except heavy medicament is sulfide, preferred Na 2s, coagulating agent is polymerize aluminum chloride.Heavy metal in waste water is mainly plumbous, arsenic, and zinc etc., adopt the sulfide precipitation clearance high, and applicable pH range is large; Described denitrification reactor also is provided with chemicals dosing plant, and for adding the denitrogenation medicament, described denitrogenation medicament is NaClO.
It is three parts that described rare earth reclaims reactor, by the water inlet water (flow) direction, is followed successively by inhalant region, multi-phase separation district and exhalant region, and described inhalant region lower end is provided with water inlet pipe, and upper end is provided with water outlet; Described multi-phase separation is provided with the composite inclined tube packing in district, promotes the rare earth rapid precipitation.
All add water-and-oil separator in the multi-phase separation district of the described efficient multi-phase separation district except heavy denitrification reactor and rare earth recovery reactor, described water-and-oil separator upper end is provided with oil discharge outlet, lower end is provided with water port, described oil discharge outlet connects the organic phase pond for recovering, described water port connects the multi-phase separation district, described water-and-oil separator impels the organic phase in the waste water in the multi-phase separation district to be separated with waste water, and the organic phase floating can enter the organic phase pond for recovering by oil discharge outlet.
Described catalyzed oxidation tower bottom is provided with microporous aeration device, and described microporous aeration device is connected with ozonizer by inlet pipe, and waste gas is carried out to catalytic oxidation treatment, and described inlet pipe is the inverted U pipe, and the pipe of inlet pipe is tall and big in the tower height of catalyzed oxidation tower; Also be provided with spray equipment in described catalyzed oxidation tower, described spray equipment is positioned at catalyzed oxidation tower inner top, mouth spray on spray equipment hangs on catalyzed oxidation tower top vertically downward, and described spray equipment below is provided with contact reacts packing layer and catalyzed oxidation packing layer successively; Described catalyzed oxidation tower below also is provided with water shoot, and described water shoot is the inverted U water shoot, and the top of described inverted U water shoot is provided with venting port; Described inlet pipe and water shoot are stablized the both sides of being fixed in the catalyzed oxidation tower by bracing frame; Described catalyzed oxidation tower also is provided with the tail gas outlet, and described tail gas outlet is arranged on the top of catalyzed oxidation tower; Described catalyzed oxidation tower below water shoot one side also is provided with sewage draining exit.
Describedly efficient reclaim reactor and the air-floating apparatus top is equipped with cover plate and gas sampling pipeline except heavy denitrification reactor, rare earth, sealed and prevent that waste gas is excessive and produce secondary pollution, described collection and confinement of gases pipeline is connected with emission-control equipment.
The beneficial effects of the utility model are:
(1) guarantee that RE waste water after treatment can qualified discharge, reach rare-earth industry sewage discharge primary standard.
(2) guarantee under the prerequisite of sewage qualified discharge, the residual rare earth in waste water is reclaimed and produces no small economic benefit, and the waste oil that collection obtains simultaneously can be recycled and save running cost.
(3) the vertical-flow slurry tank of the many employings of this technique precipitation process, floor space is little, less investment, running cost is lower.
(4) the integrated equipment of many employings in this technique, when improving treatment effect, reduced floor space, saved running cost and cost of investment.
The accompanying drawing explanation
The schema that Fig. 1 is RE waste water treatment process described in the utility model;
Fig. 2 is rare earth waste water treatment device schematic diagram described in the utility model;
Fig. 3 is described in the utility model efficient except heavy denitrification reactor apparatus structure schematic diagram;
Fig. 4 is that rare earth described in the utility model reclaims the reactor assembly structural representation;
Fig. 5 is catalyzed oxidation tower structure schematic diagram described in the utility model;
Wherein: 1-is efficiently except heavy denitrification reactor, the 2-rare earth reclaims reactor, the 3-air-floating apparatus, 4-neutralization reaction tank, 5-Neutralization settlement tank, the 6-fore filter, 7-catalyzed oxidation tower, 8-chemical settling tank, the 9-equalizing tank, the 10-settling pond, the 11-intermediate pool, 12-organic phase pond for recovering, 13-rare earth slag strainer, the 14-sludge thickener, 15-pipeline static coagulator, 16-is except heavy slag filter, the 17-emission-control equipment, 18-wastewater collection pond, 19-is except heavy reactor, 20-multi-phase separation district, the 21-denitrification reactor, the 22-static mixer, 23-composite inclined tube packing, 24-multi-phase separation district water-in, the 25-chemicals dosing plant, the 26-chemicals dosing plant, the 27-chemicals dosing plant, the 28-whipping appts, the 29-water-and-oil separator, the 30-oil discharge outlet, the 31-water port, the 32-pump, 33-denitrification reactor water-in, the 34-cover plate, the 35-cover plate, the 36-inhalant region, 37-multi-phase separation district, the 38-water-and-oil separator, the 39-exhalant region, 40-composite inclined plate filler, the 41-oil discharge outlet, the 42-water port, the 43-oil header, the tapered bucket of 44-, the 45-connected chamber, 46-inhalant region water outlet, 47-water-and-oil separator oil collect port, 48-catalyzed oxidation tower, the 49-spray equipment, the 50-microporous aeration device, the 51-ozonizer, 52-catalyzed oxidation packing layer, 53-catalytic oxidation packing layer, the 54-venting port, the outlet of 55-tail gas, the 56-water shoot, the 57-sewage draining exit, the 58-inlet pipe, 59-pipeline static coagulator, 60-pipeline static coagulator.
Embodiment
Below in conjunction with embodiment, the utility model is elaborated.
Embodiment 1
A kind for the treatment of process of RE waste water, the steps include: as shown in Figure 1
(1) rare earth extraction waste water is promoted and enters the efficient heavy denitrification reactor 1 that removes through pump by wastewater collection pond 18, by adding Na 2s, polymerize aluminum chloride, remove the heavy metal ion in waste water; Reduce the ammonia nitrogen concentration in waste water by adding NaClO;
(2) after efficiently except heavy denitrification reactor 1, the extraction wastewater after processing is mixed by pipeline static mixer 15 with oxalic acid precipitation waste water, gravity flow enters rare earth and reclaims reactor 2, reclaim residual a small amount of rare earth in extraction wastewater, oxalic acid precipitation waste water, rare earth reclaims rare earth that reactor 2 reclaims and enters to rare earth slag strainer 13 and carry out after pulp water separates regularly collecting, and efficiently except the bottom of heavy denitrification reactor 1 connects the heavy metal slag, drains into except heavy slag strainer 16; Efficiently except heavy denitrification reactor 1, rare earth reclaim reactor 2, all establish water-and-oil separator, reclaim the organic phase in waste water, organic phase, after built-in water-and-oil separator separates, enters 12 recovery of organic phase pond for recovering, and isolated aqueous-phase reflux is to wastewater collection pond 18;
(3) rare earth reclaims reactor 2 water outlets and enters air-floating apparatus 3, and pressure air-dissolving water mixes generation air supporting effect with waste water, removes the oily substance of most suspended state oil, colloidal attitude and solubilised state in waste water;
(4) air-floating apparatus 3 water outlet gravity flows enter equalizing tank 9;
(5) equalizing tank 9 water outlets promote by after pipeline static mixer 15 dosings mixing, entering neutralization reaction tank 4 with pump, regulate waste water ph by adding white lime, be adjusted to pH > 8, after adding polymerize aluminum chloride, ferrous sulfate, polyacrylamide, water outlet enters Neutralization settlement tank 5 precipitations;
(6) 5 water outlets of Neutralization settlement tank are from flowing into intermediate pool 11, promote through fore filter 6 and remove suspended substance with pump, water outlet enters catalyzed oxidation tower 7, by adding chemical oxidizing agent, waste water is carried out to catalyzed oxidation, remove on the one hand the COD in waste water, organophosphorus in phosphorus base organic phase remaining in waste water can be converted into to phosphate radical, the ozone that chemical oxidizing agent used is in situ preparation on the other hand;
(7) 7 water outlets of catalyzed oxidation tower enter chemical settling tank precipitation 8 after pipeline static mixer 15 adds aluminium salt, polyacrylamide, after adding the chemical dephosphorization medicament, the precipitation of the phosphate radical in waste water are removed, and reach the purpose that reduces total phosphorus;
(8) 8 water outlets of chemical settling tank enter settling pond 10, qualified discharge after the suspended substance in continuation clarification removal waste water.
In above-mentioned steps: Neutralization settlement tank 5 and chemical settling tank 8 produce in and slag, chemical dephosphorization slag enter sludge thickener 14, sludge thickener 4 bottom thickened sludges are promoted to the rear outward transport of being dewatered of sheet frame water extracter with pump and dispose; The waste gas produced in wastewater treatment process except heavy denitrification reactor, rare earth recovery reactor 2 and air-floating apparatus 3 is collected into emission-control equipment 17 by the pipeline on the device top blind flange.
Embodiment 2
Rare earth waste water treatment device as Figure 2-3 comprises: wastewater collection pond 18, pump, pipeline static mixer, efficient except heavy denitrification reactor 1, rare earth reclaims reactor 2, air-floating apparatus 3, equalizing tank 9, neutralization reaction tank 4, Neutralization settlement tank 5, intermediate pool 11, fore filter 6, catalyzed oxidation tower 7, chemical settling tank 8 and settling pond 10, wastewater collection pond 18 is connected except heavy denitrification reactor 1 water-in with efficient by pump, described efficiently comprise except heavy denitrification reactor 1 inside: remove heavy reactor 19, multi-phase separation district 20 and denitrification reactor 21, describedly join with multi-phase separation district 20 by overflowing the mouth of a river 24 except heavy reactor 19, and described multi-phase separation district 20 joins with denitrification reactor 21 by the mouth of a river 33 that overflows of opposite side, described except heavy reactor 19, multi-phase separation district 20 and denitrification reactor 21 bottoms are tapered bucket, described tapered bucket all connects except heavy slag strainer 16, described except heavy reactor 19 and denitrification reactor 21 inside all being furnished with whipping appts 28, be provided with composite inclined tube packing 23 in described multi-phase separation district 20, promote the sediment rapid precipitation generated except heavy 19 reactions, also add water-and-oil separator 29 in described multi-phase separation district 20, described water-and-oil separator 29 upper ends are provided with oil discharge outlet 30, lower end is provided with water port 31, described oil discharge outlet 30 connects organic phase pond for recovering 12, and described water port 31 connects wastewater collection 18 ponds, described efficient heavy reactor 19 ingress of removing except heavy denitrification reactor 1 are connected with static mixer 22, and described static mixer 22 is connected with two chemicals dosing plants 25,26, are respectively used to add except heavy medicament and coagulating agent, and wherein, described is Na except weighing medicament 2s, coagulating agent is polymerize aluminum chloride, heavy metal in waste water is mainly plumbous, arsenic, zinc etc., adopt the sulfide precipitation clearance high, and applicable pH range is large, described denitrification reactor 21 also is provided with chemicals dosing plant 27, and for adding the denitrogenation medicament, described denitrogenation medicament is NaClO, described efficient be connected with the front end of pipeline static mixer 15 except heavy denitrification reactor 1 water outlet, described pipeline static mixer 15 centres are established pipeline opening and are connected with the oxalic acid precipitation wastewater inlet pipe, the end pipeline of pipeline static mixer 15 is connected with the water-in that rare earth reclaims reactor 2, and the tapered bucket that described rare earth reclaims reactor 2 is connected with rare earth slag strainer 13 by the rare earth recovery tube, the outlet conduit that described rare earth reclaims reactor 2 is connected with air-floating apparatus 3, and described air-floating apparatus 3 conical bottom buckets are connected with sludge thickener 14, described air-floating apparatus 3 water outlets connect equalizing tank 9, and described equalizing tank 9 is by pump connecting tube static mixer 59 front ends, the end of pipeline static mixer 59 connects neutralization reaction tank 4, described neutralization reaction tank 4 water outlets connect the thrust-augmenting nozzle at Neutralization settlement tank 5 centers, the tapered bucket of described Neutralization settlement tank 5 bottoms is connected with sludge thickener 14, the water outlet of described Neutralization settlement tank 5 is positioned at the tank body upper end, connect intermediate pool 11, intermediate pool 11 water outlets connect fore filter 6 top water-ins by pump, fore filter 6 bottom water outlets connect the water-in of catalyzed oxidation tower 7 upper ends, the water outlet of catalyzed oxidation tower 7 lower ends connects chemical settling tank 8 center thrust-augmenting nozzles by pipeline static coagulator 60, the tapered bucket of chemical settling tank 8 bottoms is connected with sludge thickener 14, the water outlet of chemical settling tank 14 upper ends connects settling pond 10.In addition: efficiently the top except heavy denitrification reactor 1 is sealed by cover plate 34, and the waste gas produced in wastewater treatment process is collected and entered emission-control equipment 17 by the pipeline at cover plate 34 tops.
Its working process is: extraction wastewater promotes through pump 32, by chemicals dosing plant 25, 26 add respectively except heavy medicament and coagulating agent, through static mixer 22, enter except heavy reactor 19, under the stirring of agitator 28, fully reaction, the sediment produced enters except heavy slag strainer 16 through the tapered bucket except heavy reactor 19, except heavy reactor 19 overflow water outlets enter multi-phase separation district 20 by multi-phase separation district water-in 24, be provided with composite inclined tube packing 23 in multi-phase separation district 20, promote the sediment rapid precipitation of reacting except heavily, be provided with water-and-oil separator 29 in multi-phase separation district 20, 20Nei upper strata, multi-phase separation district oil slick flows into water-and-oil separator 29, lower floor's sediment is entered except heavy slag strainer 16 by tapered bucket, water-and-oil separator 29 upper ends are provided with oil discharge outlet 30 and connect organic phase pond for recovering 12, lower end is provided with water port 31 and connects wastewater collection pond 18, multi-phase separation district 20 enters denitrification reactor 21 by 33 overflows of denitrification reactor water-in, denitrification reactor 21 is furnished with chemicals dosing plant 27, add the denitrogenation medicament, under the stirring of agitator 28, fully reaction, the overflow water outlet enters subsequent technique, be that rare earth reclaims reactor, air-floating apparatus, equalizing tank, the neutralization reaction tank, the Neutralization settlement tank, fore filter, the catalyzed oxidation tower, chemical settling tank and settling pond continue to process.
Embodiment 3
In Figure 2-4, the described rare earth waste water treatment device of the present embodiment is from the different of embodiment 2: it is three parts that described rare earth reclaims reactor 2, be followed successively by inhalant region 36, multi-phase separation district 37 and exhalant region 39 by the water inlet water (flow) direction, described inhalant region 36 lower ends are provided with water inlet pipe, and upper end is provided with water outlet; Be provided with composite inclined tube packing 40 in described multi-phase separation district 37, promote the rare earth rapid precipitation; Described rare earth reclaims the interior water-and-oil separator 38 that all adds in multi-phase separation district 37 of reactor 2, and settling region 37 bottom design are tapered bucket 44, are connected with rare earth slag strainer 13; Described water-and-oil separator 38 oil-in 47 places are provided with oil header 43, the upper strata oil slick of RE waste water is collected and is entered water-and-oil separator 38 from oil-in 47 through oil header 43, water-and-oil separator 38 upper ends are provided with oil discharge outlet 41, lower end is provided with water port 42, described oil discharge outlet 41 connects organic phase pond for recovering 12, described water port 42 connects multi-phase separation district 37, described water-and-oil separator 38 impels in the multi-phase separation district organic phase in 37 waste water to be separated with waste water, and the organic phase floating can enter organic phase pond for recovering 12 by oil discharge outlet 41; Be connected chamber 45 below water-and-oil separator 38, connect multi-phase separation district 37 and exhalant region 39, rising pipe is positioned at the upper end of exhalant region 39.In addition: rare earth reclaims the top of reactor 2 and air-floating apparatus 3 by cover plate 35 sealings, and the waste gas produced in wastewater treatment process is collected and entered emission-control equipment 17 by the pipeline at cover plate 35 tops.
The improved working process in this part is: RE waste water enters the inhalant region 36 that rare earth reclaims reactor 2 after pump promotes, enter multi-phase separation district 37 by 46 overflows of inhalant region water outlet, be provided with the composite inclined tube packing 40 of glass steel material in multi-phase separation district 37, a small amount of rare earth in RE waste water is through composite inclined tube packing 40 postprecipitations at the most in the tapered bucket 44 of phase separation region 37 bottoms.The upper strata oil slick of RE waste water is collected and is entered water-and-oil separator 38 through oil header 43, and the RE waste water after the precipitation oil removal enters exhalant region 39 by connected chamber 45.The interior oil phase of water-and-oil separator 38 enters organic phase pond for recovering 12 by oil discharge outlet 41, and the interior waste water of water-and-oil separator 38 enters wastewater collection pond 18 by water port 42.Regularly open tapered bucket 44, rare earth is entered to rare earth slag strainer 13.
In addition, catalyzed oxidation tower 48 bottoms of stating in the present embodiment are provided with microporous aeration device 50 as shown in Figure 5, described microporous aeration device 50 is connected with ozonizer 51 by inlet pipe 58, waste gas is carried out to catalytic oxidation treatment, described inlet pipe 58 is the inverted U pipe, the pipe of inlet pipe 58 is tall and big in the tower height of catalyzed oxidation tower 48, when the interior water level of catalyzed oxidation tower 48 is too high, backflow effect because of liquid, the RE waste water that catalyzed oxidation tower 48 inner bottom parts collect easily refluxes and enters in ozonizer 51 by inlet pipe 58, and in order to guarantee that the independent of ozonizer 51 used and interference-free property, the pipe of inlet pipe 58 is tall and big in catalyzed oxidation tower 48 tower heights, avoided the generation of backflow thing, also extended the work-ing life of equipment, also be provided with spray equipment 49 in described catalyzed oxidation tower 48, described spray equipment 49 is positioned at catalyzed oxidation tower inner top, mouth spray on spray equipment 49 hangs on catalyzed oxidation tower 48 tops vertically downward, when RE waste water is sprayed to catalyzed oxidation tower 48 when interior through spray equipment 49, RE waste water is done the movement of falling object downwards because of gravity, open ozonizer 51, the ozone produced in ozonizer 51 can enter into by inlet pipe 58 microporous aeration device 50 of catalyzed oxidation tower 48 bottoms, and ozone can be in catalyzed oxidation tower 48 moved upward inside because of the gaseous volatilization character of self, now, RE waste water and ozone meet in catalyzed oxidation tower 48, fully mix rapid reaction, and organophosphorus is changed into to phosphate radical, effectively remove COD simultaneously, and RE waste water is filtered, and have reduced pollution, described spray equipment 49 belows are provided with contact reacts packing layer 53 and catalyzed oxidation packing layer 52 successively, ozone passes through successively catalyzed oxidation packing layer 52 and contact reacts packing layer 53 in moving process from bottom to top, increase RE waste water and ozone contact area, accelerated the carrying out of oxidizing reaction, shortened the time of oxidizing reaction, greatly increase working efficiency, further ensured the catalyzed oxidation ability, made the effect that technical process reaches get twice the result with half the effort, described catalyzed oxidation tower below also is provided with water shoot 56, reacted waste water comes together in catalyzed oxidation tower 48 inner bottom parts, water shoot 56 by catalyzed oxidation tower 48 belows is discharged, , described water shoot 56 is the inverted U pipe, and the U-shaped top of water shoot 56 is provided with venting port 55, reacted waste water comes together in catalyzed oxidation tower 48 inner bottom parts, when in the catalyzed oxidation tower, liquid level is higher than the top of inverted U water shoot 50, catalyzed oxidation tower 48 is from water shoot 56 water outlets, special cast because of long-term draining and inverted U, interior bubble and the steam of easily gathering of inverted U water shoot 56, affect stable water outlet even, now open the venting port 55 at water shoot 56 inverted U tops, remove bubble and steam, guarantee the normal use of water shoot 56, described catalyzed oxidation tower 48 also is provided with tail gas outlet 54, described tail gas outlet 54 is arranged on the top of catalyzed oxidation tower 48, tail gas in reaction process is discharged by the tail gas outlet 54 at catalyzed oxidation tower 48 tops, tail gas outlet 54 is positioned at catalyzed oxidation tower 48 tops, extended the reaction times of gas in catalyzed oxidation tower 48, waste gas can be discharged through top tail gas outlet 54 after long catalyzed oxidation again, increases work efficiency, described catalyzed oxidation tower below water shoot 56 1 sides also are provided with sewage draining exit 57, and catalyzed oxidation tower 48, after work after a while, can be removed the residual dirt of catalyzed oxidation tower 48 inner bottom parts from sewage draining exit 57, guarantee clean and tidy in catalyzed oxidation tower 48.In addition: described inlet pipe 58 and water shoot 56 are stablized the both sides of being fixed in catalyzed oxidation tower 48 by bracing frame.
Above the utility model is described in detail, but the utility model is not limited to the above embodiments.All equivalences of doing according to spirit of the present utility model change or modify, and all should be encompassed in protection domain of the present utility model.

Claims (8)

1. the treatment facility of a RE waste water, comprise: wastewater collection pond, pump, pipeline static mixer, efficient except heavy denitrification reactor, rare earth recovery reactor, air-floating apparatus, equalizing tank, neutralization reaction tank, Neutralization settlement tank, intermediate pool, fore filter, catalyzed oxidation tower, chemical settling tank and settling pond, described wastewater collection pond is connected except weighing the denitrification reactor water-in with efficient by pump, and the described efficient tapered bucket except heavy denitrification reactor bottom is connected with and removes heavy slag filter, the described efficient heavily denitrification reactor water outlet that removes is connected with the front end of pipeline static mixer, establishes pipeline opening in the middle of described pipeline static mixer and is connected with the oxalic acid precipitation wastewater inlet pipe, the end pipeline of pipeline static mixer is connected with the water-in that rare earth reclaims reactor, and the tapered bucket that described rare earth reclaims reactor is connected with the rare earth slag strainer by the rare earth recovery tube, the outlet conduit that described rare earth reclaims reactor is connected with air-floating apparatus, and described air-floating apparatus conical bottom bucket is connected with sludge thickener, described air-floating apparatus water outlet connects equalizing tank, and described equalizing tank is by pump connecting tube static mixer front end, the end of pipeline static mixer connects the neutralization reaction tank, described neutralization reaction tank water outlet connects the thrust-augmenting nozzle at Neutralization settlement tank center, the tapered bucket of described Neutralization settlement pot bottom is connected with sludge thickener, the water outlet of described Neutralization settlement tank is positioned at the tank body upper end, connect intermediate pool, the intermediate pool water outlet connects fore filter top water-in by pump, fore filter bottom water outlet connects the water-in of catalyzed oxidation tower upper end, the water outlet of catalyzed oxidation tower lower end connects chemical settling tank center thrust-augmenting nozzle, the tapered bucket of chemical settling pot bottom is connected with sludge thickener, the water outlet of chemical settling tank upper end connects settling pond.
2. the treatment facility of RE waste water according to claim 1, it is characterized in that: described efficient comprise except heavy denitrification reactor: except heavy reactor, multi-phase separation district and denitrification reactor, described except heavy reactor by overflowing the mouth of a river and the multi-phase separation district joins, described multi-phase separation district by opposite side overflow the mouth of a river and denitrification reactor joins.
3. the treatment facility of RE waste water according to claim 2, is characterized in that: described except heavily reactor and denitrification reactor inside all are furnished with whipping appts; Described multi-phase separation is provided with the composite inclined tube packing in district.
4. the treatment facility of RE waste water according to claim 3 is characterized in that: describedly be connected with two chemicals dosing plants except heavy reactor water-in, be respectively used to add except heavy medicament and coagulating agent; Described denitrification reactor also is provided with chemicals dosing plant, for adding the denitrogenation medicament.
5. the treatment facility of RE waste water according to claim 1, it is characterized in that: it is three parts that described rare earth reclaims reactor, be followed successively by inhalant region, multi-phase separation district and exhalant region by the water inlet water (flow) direction, described inhalant region lower end is provided with water inlet pipe, and upper end is provided with water outlet; Described multi-phase separation is provided with the composite inclined tube packing in district.
6. according to the treatment facility of claim 2 or the described RE waste water of 5 any one, it is characterized in that: in the multi-phase separation district of the described efficient multi-phase separation district except heavy denitrification reactor and rare earth recovery reactor, all add water-and-oil separator, described water-and-oil separator upper end is provided with oil discharge outlet, lower end is provided with water port, described oil discharge outlet connects the organic phase pond for recovering, and described water port connects the multi-phase separation district.
7. the treatment facility of RE waste water according to claim 1, it is characterized in that: described catalyzed oxidation tower bottom is provided with microporous aeration device, described microporous aeration device is connected with ozonizer by inlet pipe, described inlet pipe is the inverted U pipe, and the pipe of inlet pipe is tall and big in the tower height of catalyzed oxidation tower; Also be provided with spray equipment in described catalyzed oxidation tower, described spray equipment is positioned at catalyzed oxidation tower inner top, mouth spray on spray equipment hangs on catalyzed oxidation tower top vertically downward, and described spray equipment below is provided with contact reacts packing layer and catalyzed oxidation packing layer successively; Described catalyzed oxidation tower below also is provided with water shoot, and described water shoot is the inverted U water shoot, and the top of described inverted U water shoot is provided with venting port; Described inlet pipe and water shoot are stablized the both sides of being fixed in the catalyzed oxidation tower by bracing frame; Described catalyzed oxidation tower also is provided with the tail gas outlet, and described tail gas outlet is arranged on the top of catalyzed oxidation tower; Described catalyzed oxidation tower below water shoot one side also is provided with sewage draining exit.
8. the treatment facility of RE waste water according to claim 1, it is characterized in that: described efficient heavy denitrification reactor, rare earth recovery reactor and the air-floating apparatus top of removing is equipped with cover plate and gas sampling pipeline, and described collection and confinement of gases pipeline is connected with emission-control equipment.
CN 201220626570 2012-11-23 2012-11-23 Processing equipment of rare earth wastewater Expired - Fee Related CN202968282U (en)

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CN 201220626570 CN202968282U (en) 2012-11-23 2012-11-23 Processing equipment of rare earth wastewater

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CN 201220626570 CN202968282U (en) 2012-11-23 2012-11-23 Processing equipment of rare earth wastewater

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108892253A (en) * 2018-06-27 2018-11-27 安徽科创新能源科技有限责任公司 A kind of wastewater treatment equipment
CN109081464A (en) * 2018-10-10 2018-12-25 信丰县包钢新利稀土有限责任公司 A kind of rare earth extraction sewage-treatment plant

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108892253A (en) * 2018-06-27 2018-11-27 安徽科创新能源科技有限责任公司 A kind of wastewater treatment equipment
CN109081464A (en) * 2018-10-10 2018-12-25 信丰县包钢新利稀土有限责任公司 A kind of rare earth extraction sewage-treatment plant
CN109081464B (en) * 2018-10-10 2021-04-06 信丰县包钢新利稀土有限责任公司 Sewage treatment plant for rare earth extraction

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