CN205188019U - Lime - gypsum wet flue gas desulfurization waste water mud branch matter and subtract quantization device - Google Patents
Lime - gypsum wet flue gas desulfurization waste water mud branch matter and subtract quantization device Download PDFInfo
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- CN205188019U CN205188019U CN201520919433.7U CN201520919433U CN205188019U CN 205188019 U CN205188019 U CN 205188019U CN 201520919433 U CN201520919433 U CN 201520919433U CN 205188019 U CN205188019 U CN 205188019U
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Abstract
The utility model provides a lime - gypsum wet flue gas desulfurization waste water mud branch matter and subtract quantization device, it includes high -efficient whirl settling vessel (1) characterized by, PH regulating box (4), thoughtlessly congeal reaction box (8), flocculating reaction case (11), the concentrated pond (15) of waste water clarification, with emission case (17) in the clear water, paddle formula desiccator (24), desulfurization lime slurry tank (30) and desulfurizing tower (33), install settling vessel interior a whirl section of thick bamboo (2) and toper reflecting plate (3) in high -efficient whirl settling vessel (1), toper reflecting plate (3) lie in the below of a settling vessel whirl section of thick bamboo (2), desulfurization waste water gets into the concentrated pond (15) of flocculating reaction case (11) reentrant waste water defecation through following high -efficient whirl settling vessel (1) one side upper portion after purifying from flowing into after reaction box (8) are thoughtlessly congealed to the back entering of PH regulating box (4) regulation pH value. The utility model discloses technology is novel, compact structure, and the operation is stable, and investment cost, operation takes, the processing expense of hazardous waste mud is hanged down characteristics have apparent environmental benefit and economic benefits.
Description
Technical field
The utility model relates to a kind of lime-gypsum wet desulfurization wastewater mud sub-prime and minimizing process new device, especially a kind of cyclone sediment with desulfurization wastewater, PH regulates, coagulation-flocculation reacts, concentrating clarifying, mud dual treatment and toxic sludge Drying Treatment Technology, most mud (major ingredient gypsum) can be made to recycle and can effectively remove the Multifunctional treatment device heavy metal ion basis in waste water being carried out press filtration and drying treatment to excess sludge, specifically a kind of lime-gypsum wet desulfurization wastewater mud sub-prime and minimizing process new device.
Background technology
As everyone knows, lime-gypsum wet flue gas desulfurizing can produce a certain amount of desulfurization wastewater in producing, the pH value of desulfurization wastewater is 5.0 ~ 5.5, heavy metal in waste water main polluted factors has mercury, cadmium, chromium, nickel, plumbous etc., suspended substance in waste water is up to 20000 ~ 40000 mg/litre, pre-treatment must be carried out to desulfurization wastewater, the processing technological flow up to standard adopted both at home and abroad at present as shown in Figure 1, FGD Wastewater Treatment Process shown in Fig. 1 from 2000 from quoting so far abroad, the suspension object height of desulfurization wastewater, main component in suspended substance is gypsum (CaSO4), particle diameter is 5 μm ~ 30 μm, due to suspension object height and viscosity and density larger, often make the mud scraper bottom kernel processing device concentrating clarifying pond cannot operate because resistance is excessive, sludge dewatering equipment load is higher and failure rate is high, make desulfurization wastewater process operation factor extremely low, only about 15% is had through what investigate that national desulfurization wastewater facility works well, owing to there is poisonous heavy metal Hg in desulfurization wastewater, cadmium, chromium, nickel, lead waits pollution factor, when waste water PH to be adjusted to about 9.3 by slaked lime, heavy metal ion all generates corresponding precipitation of hydroxide and is accumulated in mud, make toxic heavy metal ion content in mud high, calculate according to leaching characteristic identification standard value in National Hazard refuse leaching characteristic identification standard (GB5085.3-2007), mercury in the mud that overwhelming majority lime-gypsum wet flue gas desulfurizing wastewater treatment produces, cadmium, chromium, nickel, lead etc. all has the one or more value that is above standard, Hazardous wastes should be classified as, national thermal power plant installed capacity in by the end of December, 2014 is 9.2 hundred million kilowatts (92000MW) according to statistics, wet method lime-gypsum wet desulfurization is adopted by 70%, total installation of generating capacity is 644000MW, the waste water 2.5 tons/h that every 100MW generator set desulfurization produces, then national total installation of generating capacity is that the raw wastewater flow rate of 64400MW common property is about 16100 tons/h, it is 386400 tons/d that national every day produces desulfurization wastewater amount, the SS mean concns of desulfurization wastewater is pressed 20000mg/L and is calculated, i.e. 20kgSS/ ton waste water, it is 7728 tons/d that national every day produces over dry mud, tear open be counted as water ratio be 70% sludge quantity be 25760 tons/d, desulfurization wastewater mud as 70% is Hazardous wastes, sludge quantity every day of whole nation desulfurization wastewater is 18032 tons/d, annual by calculating in 320 days, the annual sludge quantity belonging to Hazardous wastes is 5770240 tons/a, dangerous waste disposal takes by domestic each province mean value 2000 yuan/ton calculating, the annual disposal expense being used for the dangerous mud of desulfurization wastewater in the whole nation is about 115.4 hundred million yuan/a.Because current domestic desulfurization wastewater treatment process up to standard operation factor is low, in waste water, the gypsum of a large amount of recoverable becomes Hazardous wastes, and investment and running cost and sludge disposal take high, therefore design a kind of desulfurization wastewater mud sub-prime and minimizing process new device.
Utility model content
The purpose of this utility model is that the desulfuration waste water treatment process produced in producing for current state sodalime-gypsum wet desulfurization is immature, operation factor is low, operating performance is poor, the gypsum of a large amount of recoverable becomes Hazardous wastes, sludge disposal takes high disposal status, design a kind of compact construction, investment cost is less, operation factor is high, stable, gypsum recoverable, Hazardous wastes mud energy decrement, reduce the novel treatment device that sludge disposal takes, new device adopts mud dual treatment technology, the mud of in desulfurization wastewater 97% is recycled, the mud of 5% is only had to become Hazardous wastes, the Hazardous wastes mud of water ratio 70% is carried out drying treatment and becomes the mud that water ratio is 10% by new device employing drying sludge treatment technology, the wet mud weight of disposal is made to reduce 60%, the disposal expense of Hazardous wastes mud and the volume of security landfill can be reduced.
The technical solution of the utility model is:
A kind of lime-gypsum wet desulfurization wastewater mud sub-prime and minimizing treatment unit, it is characterized in that it comprises high-efficiency cyclone settling vessel 1, pH regulator case 4, coagulating case 8, flocculation reaction case 11, waste water clarification concentration basin 15, with discharge case 17 in clear water, paddle-dryer (24, desulfurization lime slurry case 30 and thionizer 33, settling vessel inward eddy cylinder 2 is installed in high-efficiency cyclone settling vessel 1) and taper reflector 3, taper reflector 3 is positioned at the below of settling vessel inward eddy cylinder 2, one end of desulfurization wastewater water inlet pipe is connected with desulfurization wastewater, the other end enters in settling vessel inward eddy cylinder 2 through high-efficiency cyclone settling vessel 1, desulfurization wastewater enters at a high speed along the tangential direction of the inward eddy cylinder 2 of settling vessel and makes downward swirling motion and produce centrifugal force, complete part solid-liquid separation, after highdensity sludge filtration layer filters, in high-efficiency cyclone settling vessel 1, upwards secondary solid-liquid separation is completed as swirling motion again after desulfurization wastewater moves downwardly to taper reflector 3, bottom high-efficiency cyclone settling vessel 1, desulfurization lime slurry case 30 is expelled to after being separated the compressed precipitation of mud formed, after desulfurization lime slurry stirrer 31 stirs, thionizer 33 is transported to by lime slurry lift pump 32 together with the supplementary lime added, desulfurization wastewater to enter flocculation reaction case 11 and the compound iron liquid that adds carries out flocculation reaction from entering after high-efficiency cyclone settling vessel 1 one upper lateral part flows automatically PH surge tank 4 adjust ph after purification after coagulating case 8 mixes with the organosulfur liquid added, enter waste water again and clarify concentration basin 15 together with the PAM liquid added), the mud scraper 16 of mud through waste water clarification concentration basin 15 bottom of precipitation is sent into the sludge lifting pump 20 installed waste water clarification concentration basin 15 outside and is sent into chamber-type press filter 21 and enter press filtration, mud after press filtration is sent into after paddle-dryer 24 drying through worm conveyor 22 and is transported by dewatered sludge transfer roller 26, the waste gas produced in paddle-dryer 24 drying process processes qualified discharge by after tornado dust collector 27 dedusting through exhaust gas treating tower 29, the waste water that waste water clarification concentration basin 15 is clarified enters in clear water and discharges in case 17 and hydrochloric acid and rear discharge up to standard, the waste water that chamber-type press filter 21 press filtration produces then again is got back to waste water clarification concentration basin 15 and is entered clarification.
Described pH regulator case 4 top is measured feeding machine by pipeline with the star of slaked lime feed bin 5 and is connected, and be provided with pH value in pH regulator case 4 and regulate stirrer 6 and pH meter 7, the side bottom opening of pH regulator case 4 is connected with coagulating case 8.
Described coagulating case 8 top is exported with organosulfur medicine liquor metering case 9 volume pump and is connected by pipeline, and install coagulation stirrer 10 in coagulating case 8, the middle and upper part perforate of coagulating case 8 side is connected with flocculation reaction case 11.
Described flocculation reaction case 11 top is exported with compound iron medicine liquor metering case 12 volume pump and is connected by pipeline, stirrer 13 is installed in flocculation reaction case 11, its a upper lateral part water outlet by pipeline first export with the volume pump of PAM medicine liquor metering case 14 be connected after clarify concentration basin 15 again with waste water water inlet pipe be connected.
Export with the volume pump of hydrochloric acid medicine liquor metering case 18 with the top of discharge case 17 in described clear water and be connected by pipeline, being provided with in clear water and stirrer 19 with discharging in case 17 in clear water, in clear water, with a upper lateral part of discharge case 17, delivery pipe being installed.
The outlet of described sludge lifting pump 20 is connected with the inlet pipe of chamber-type press filter 21 by pipeline, the discharge port of chamber-type press filter 21 is connected with worm conveyor 22 opening for feed, and worm conveyor 22 discharge port is connected with the opening for feed 23 of paddle-dryer 24 by pipeline.
The dewatered sludge discharge port 25 of described paddle-dryer 24 is connected with dewatered sludge transfer roller 26 opening for feed by pipeline, the escape pipe of paddle-dryer 24 is connected with tornado dust collector 27 inlet pipe by pipeline, tornado dust collector 27 outlet pipe is connected by pipeline with induced draft fan 28 inlet pipe, and induced draft fan 28 outlet pipe is connected with exhaust gas treating tower 29 inlet pipe by pipeline.
Described desulfurization lime slurry case 30 side lower part outlet is connected with lime slurry lift pump 32 inlet pipe by pipeline, and lime slurry lift pump 32 is exported and is connected with thionizer (33) fluid inlet by pipeline.
The beneficial effects of the utility model:
1. the utility model adopts dual treatment technology to the mud in desulfurization wastewater, the high-efficiency cyclone settler device of design desulfurization wastewater before desulfurization wastewater does not carry out regulating PH to generate toxic heavy metal precipitation, make most suspended substance precipitation in waste water, the sludge quality of sedimentation is identical with the gypsum component of desulphurization system, mainly particle diameter is the gypsum crystal grain of 5 μm ~ 30 μm thinner, , the mud of sedimentation is delivered to lime white liquid pool and enter thionizer system together with lime slurry by pump lifting, the gypsum crystal of fine particles can be made to become large, the gypsum of recoverable is obtained by dehydration, not only reduce the sludge loading of desulfuration waste water treatment process, reduce the output of Hazardous wastes, make 97% mud become the gypsum of recoverable simultaneously, technique is fine through the operating performance of 1000MW generator set desulfurization waste water more than 1 year.
2. the high-efficiency cyclone settling vessel of the utility model design makes desulfurization wastewater at a high speed enter (3m/s) along the tangential direction of high-efficiency cyclone settling vessel inward eddy cylinder one upper lateral part to make downward swirling motion, produce centrifugal force, complete part solid-liquid separation, after highdensity sludge blanket filters, upwards secondary solid-liquid separation is completed as swirling motion again after waste water moves downwardly to reflector, discharge from bottom after the compressed precipitation of a large amount of mud, waste water makes 20000 ~ 40000mg/L suspended substance sedimentation 97% in 3 hours in waste water after purification, goes out water suspension≤1200mg/L.
3. the utility model can reduce settling time and the volume of waste water clarification concentration basin in subsequent technique, and alleviate the load of waste water clarification concentration basin mud scraper, the filtration area of chamber-type press filter can reduce 80%, reduces investment and running cost.
4. the utility model slaked lime adds and adopts dry powder metering to add new technology, the slaked lime wet method of domestic current employing adds technology and is provided with dissolving case, dissolve case stirrer, batch meter, batch meter stirrer, recycle pump, ultrasonic level gage, volume pump, because slaked lime indissoluble solution adds to, insoluble hard impurity is more makes recycle pump and volume pump serious wear, blocking is frequent, have a strong impact on system cloud gray model, adopt dry powder metering to add new technology and can overcome these shortcomings, through the use of domestic 1000MW generator set desulfurization waste water, stable, simultaneously every covering device is reduced investment outlay expense more than 30 ten thousand yuan.
5. the utility model adopts Drying Treatment Technology to wet mud, through the mud that the water ratio that chamber-type press filter is press-filtered out is 70%, drying treatment is carried out to subsequent technique, drying source is that (temperature controls at 140 DEG C ~ 160 DEG C for the afterheat steam of power plant, mercury when vapor temperature is greater than 180 DEG C in mud can be overflowed) make the water ratio of mud be down to less than 10% from 70% by paddle-dryer process, dry 1 ton of water ratio be 70% wet mud to water ratio be 10% comparatively dewatered sludge, consume steam 0.2 and steam ton (steam 200 yuan/steaming ton), consume electric 4KW (power plant's electricity price 0.5 yuan/KW), evaporate to dryness cost is 55 yuan/ton of wet mud (containing labour cost), 1 ton of water ratio be 70% wet drying sludge to water ratio be 10% be only 0.4 ton compared with the weight of dewatered sludge, reduce 0.6 ton, as dangerous waste disposal takes by national average value 2000 yuan/ton calculating, then wet mud per ton reduces disposal expense 1145 yuan (containing the wet drying sludge cost of deduction), save soil and the cost of landfill simultaneously.
6. the utility model desulfurization wastewater treatment system has environmental benefit and economic benefit, can increase the recycling of gypsum, and the generation and the disposal that reduce Hazardous wastes take.For 1 1000MW unit, desulfurization wastewater generation per hour 20 tons, suspended substance is 20000mg/L, it is 11776 tons/a (calculating by 320 days for 1 year) that domestic existing treatment process adds through waste water per ton the Hazardous wastes mud (water ratio 70%) produced after 3000mg/L slaked lime, after adopting mud dual treatment technology, suspended substance is down to 600mg/L from 20000mg/L, recyclable 0.388 ton of gypsum (sedimentation clearance 97%) per hour, 2980 tons, annual recyclable gypsum (calculating by 320d/a), after in the treatment process of subsequent degradation solvability heavy metal, waste water per ton adds 3000mg/L slaked lime, suspended substance increases to 3600mg/L, the Hazardous wastes mud (water ratio 70%) produced is 1843 tons/a, amount after the process of mud drying is 736 tons/a (water ratio 10%), Novel desulphurization wastewater sludge sub-prime and reduction treatment system can reduce the sludge disposal amount 11040 tons/a of Hazardous wastes every year, can save and dispose expense (by 2000 yuan/ton of calculating) 2,208 ten thousand yuan/a.
7. the utility model is at PH surge tank design PH on-line testing meter, and the pH value (PH controls 9.2 ~ 9.5) in strict controlling run, guarantees that heavy metal generates precipitation of hydroxide, prevents the dissolving again of oxyhydroxide under too high PH condition.
8. the utility model controls 140 for the afterheat steam temperature of wet drying sludge
0c ~ 160
0c, temperature>=180
0the mercury in mud can be caused during C to volatilize along with waste gas enters air.
9. the utility model can change the situation of existing domestic traditional desulfuration waste water treatment process operating performance difference, makes treatment process more reasonable, more economical, has significant environmental benefit and economic benefit.
Accompanying drawing explanation
Fig. 1 is existing lime-gypsum wet flue gas desulfurizing production technique schematic diagram
Fig. 2 is the structural representation for the treatment of unit of the present utility model.
In figure: 1 is high-efficiency cyclone settling vessel, 2 is settling vessel inward eddy cylinder, 3 is taper reflector, 4 is PH surge tank, 5 is slaked lime feed bin, 6 is stirrer, 7 is PH meter, 8 is coagulating case, 9 is organosulfur medicine liquor metering case, 10 is organosulfur medicinal liquid agitating machine, 11 is flocculation reaction case, 12 is compound iron medicine liquor metering case, 13 is compound iron medicinal liquid agitating machine, 14 is PAM medicine liquor metering case, 15 is waste water clarification concentration basin, 16 is mud scraper, 17 is in clear water and discharge case, 18 is hydrochloric acid batch meter, 19 is stirrer, 20 is sludge lifting pump, 21 is chamber-type press filter, 22 is worm conveyor, 23 is wet sludge inlet, 24 is paddle-dryer, 25 is dewatered sludge discharge port, 26 is dewatered sludge transfer roller, 27 is tornado dust collector, 28 is induced draft fan, 29 is exhaust gas treating tower, 30 is desulfurization lime slurry case, 31 is desulfurization lime slurry stirrer, 32 is lime slurry lift pump, 33 is thionizer.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
As shown in Figure 2.
A kind of lime-gypsum wet desulfurization wastewater mud sub-prime and minimizing treatment unit, it comprises high-efficiency cyclone settling vessel 1, PH surge tank 4, coagulating case 8, flocculation reaction case 11, slaked lime feed bin 5, organosulfur batch meter 9, compound iron batch meter 12, PAM batch meter 14, hydrochloric acid batch meter 18, waste water clarification concentration basin 15, with discharge case 17 in clear water, chamber-type press filter 21, worm conveyor 22, paddle-dryer 24, dewatered sludge transfer roller 26, tornado dust collector 27, induced draft fan 28, exhaust gas treating tower 29, desulfurization lime slurry case 30, lime slurry lift pump 32, thionizer 33, is characterized in that one end, middle and upper part, side of described high-efficiency cyclone settling vessel 1 is connected with desulfurization wastewater water inlet pipe by pipeline, the other end is connected with inward eddy cylinder 2 middle and upper part of high-efficiency cyclone settling vessel 1, taper reflector 3 is provided with below inward eddy cylinder 2, the bottom of high-efficiency cyclone settling vessel 1 is connected with desulfurization lime slurry case 30 top inlet by pipeline, the water outlet of one upper lateral part is connected with PH surge tank 4 inlet channel by pipeline, and PH surge tank 4 top is measured feeding machine with slaked lime feed bin 5 star and is connected by pipeline, stirrer 6 is installed at top, PH meter 7, case side bottom opening is connected with coagulating case 8, and coagulating case 8 top is exported with organosulfur medicine liquor metering case 9 volume pump and is connected by pipeline, stirrer 10 is installed at coagulating case 8 top, the middle and upper part perforate of case side is connected with flocculation reaction case 11, and flocculation reaction case 11 top is exported with compound iron medicine liquor metering case 12 volume pump and is connected by pipeline, stirrer 13 is installed at flocculation reaction case 11 top, one upper lateral part water outlet by pipeline first export with PAM medicine liquor metering case 14 volume pump be connected after clarify concentration basin 15 water inlet pipe again with waste water and be connected, waste water clarify concentration basin 15 rising pipe by pipeline with in clear water with discharge case 17 water-in and be connected, bottom waste water clarification concentration basin 15, mud scraper 16 is installed, bottom waste water clarification concentration basin 15, mud mouth is connected by the inlet pipe of pipeline with sludge lifting pump 20, exports be connected by pipeline in clear water with the top of discharge case 17 with the volume pump of hydrochloric acid medicine liquor metering case 18, stirrer 19 is installed in clear water and discharge case 17 top, install delivery pipe with a upper lateral part of discharge case 17 in clear water, the outlet of sludge lifting pump 20 is connected by the inlet pipe of pipeline with chamber-type press filter 21, the discharge port of chamber-type press filter 21 is connected with worm conveyor 22 opening for feed, and worm conveyor 22 discharge port is connected with the opening for feed 23 of paddle-dryer 24 by pipeline, the mud of drying is connected with dewatered sludge transfer roller 26 opening for feed from the dewatered sludge discharge port 25 of paddle-dryer 24 by pipeline, the side afterheat steam import of paddle-dryer 24 by pipeline and power plant supply vapour outlet to be connected, the escape pipe of paddle-dryer 24 is connected with tornado dust collector 27 inlet pipe by pipeline, tornado dust collector 27 outlet pipe is connected by pipeline with induced draft fan 28 inlet pipe, induced draft fan 28 outlet pipe is connected with exhaust gas treating tower 29 inlet pipe by pipeline, and stirrer 31 is installed at desulfurization lime slurry case 30 top, desulfurization lime slurry case 30 side lower part outlet pipe is connected with lime slurry lift pump 32 inlet pipe by pipeline, and lime slurry lift pump 32 outlet pipe is connected with thionizer 33 fluid inlet.
Treating processes of the present utility model is:
Desulfurization wastewater enters at a high speed along the tangential direction of the inward eddy cylinder 2 of high-efficiency cyclone settling vessel 1 and makes downward swirling motion and produce centrifugal force, complete part solid-liquid separation, after highdensity sludge blanket filters, in high-efficiency cyclone settling vessel 1, upwards secondary solid-liquid separation is completed as swirling motion again after waste water moves downwardly to the reflector 3 in high-efficiency cyclone settling vessel 1, bottom high-efficiency cyclone settling vessel 1, desulfurization lime slurry case 30 is expelled to after the compressed precipitation of mud, after stirrer 31 stirs, thionizer 33 is transported to by lime slurry lift pump together with the supplementary lime added, waste water flows automatically into PH surge tank 4 from high-efficiency cyclone settling vessel 1 one upper lateral part after purification, the slaked lime of slaked lime feed bin 5 enters in PH surge tank 4 by star constant feeder simultaneously, PH on-line monitoring meter is installed at PH surge tank 4 top, waste water abundant stirring reaction under the effect of PH surge tank stirrer 6 PH is adjusted to set(ting)value (9.2 ~ 9.5) afterwards waste water flow in coagulating case 8 from case side bottom opening, the liquid of organosulfur medicine liquor metering case 9 quantitatively enters in coagulating case 8 by volume pump simultaneously, abundant stirring reaction under the effect of coagulating case stirrer 10, waste water flows in flocculation reaction case 11 from middle and upper part, coagulating case 8 side tapping, the liquid of compound iron medicine liquor metering case 12 quantitatively enters in flocculation reaction case 11 by volume pump simultaneously, abundant stirring reaction under the effect of flocculation reaction case stirrer 13, the water inlet pipe clarifying concentration basin 15 central tube top after case one upper lateral part is first connected with the volume pump outlet pipe of PAM spray tank 14 by pipeline again with waste water is connected, mud scraper 16 is installed by the sludge bucket at pool bottom sludge Gua Rudi center bottom waste water clarification concentration basin 15, mud mouth bottom waste water clarification concentration basin 15 is connected with sludge lifting pump 20 inlet pipe by pipeline, clarification concentration basin 15 is connected with the water inlet pipe discharging case 17 with clear water by pipeline through the waste water of purification, with discharge case 17, stirrer 19 is installed in clear water, be connected with the volume pump outlet pipe of hydrochloric acid batch meter 18 by pipeline with discharge case 17 top in clear water, delivery pipe is installed to qualified discharge groove with discharge case 17 1 upper lateral part in clear water, sludge lifting pump 20 outlet pipe is connected with chamber-type press filter 21 inlet pipe by pipeline, chamber-type press filter 21 sludge outlet is connected by pipeline with worm conveyor 22 import, worm conveyor 22 is exported and is connected by pipeline and the paddle-dryer 24 mud inlet pipe that wets, the afterheat steam import of paddle-dryer 24 side by pipeline and power plant supply afterheat steam to export to be connected, the mud of drying is communicated with conveying by pipeline with dewatered sludge transfer roller 26 opening for feed from dewatered sludge discharge port 25 bottom paddle-dryer 24 and transports, the exhaust steam of paddle-dryer 24 is connected with tornado dust collector 27 inlet mouth by pipeline by the air outlet on its top, air outlet, tornado dust collector 27 top is connected by the inlet mouth of pipeline with induced draft fan 28, the air outlet of induced draft fan 28 is connected by the inlet mouth of pipeline with exhaust gas treating tower 29, the waste gas up to standard processed through exhaust gas treating tower 29 is discharged from its top.
The utility model in use added amount of chemical is generally slaked lime 3kg/ ton waste water, organosulfur (content 15%, relative density 1.12g/mL) liquid 0.6L/ ton waste water, compound iron (content 40%, relative density 1.22g/mL) liquid 1.0L/ ton waste water, particulate state PAM (solid, anionic, molecular weight 1,500 ten thousand) 7 grams of/ton of waste water, hydrochloric acid (content 35%) 1L/ ton waste water, and the span of control of waste water PH in reaction box and waste water clarification concentration basin should in 9.2 ~ 9.5 intervals.Added amount of chemical also can be determined according to actual tests.
The utility model process whole process all can realize auto-controll operation.
The utility model does not relate to the part prior art that maybe can adopt all same as the prior art and is realized.
Claims (8)
1. lime-gypsum wet desulfurization wastewater mud sub-prime and minimizing treatment unit, it is characterized in that it comprises high-efficiency cyclone settling vessel (1), pH regulator case (4), coagulating case (8), flocculation reaction case (11), waste water clarification concentration basin (15), with discharge case (17) in clear water, paddle-dryer (24), desulfurization lime slurry case (30) and thionizer (33), settling vessel inward eddy cylinder (2) and taper reflector (3) are installed in high-efficiency cyclone settling vessel (1), taper reflector (3) is positioned at the below of settling vessel inward eddy cylinder (2), one end of desulfurization wastewater water inlet pipe is connected with desulfurization wastewater, the other end enters in settling vessel inward eddy cylinder (2) through high-efficiency cyclone settling vessel (1), desulfurization wastewater enters at a high speed along the tangential direction of the inward eddy cylinder (2) of settling vessel and makes downward swirling motion and produce centrifugal force, complete part solid-liquid separation, desulfurization wastewater moves downwardly to after taper reflector (3) filters by highdensity sludge filtration layer and in high-efficiency cyclone settling vessel (1), upwards completes secondary solid-liquid separation as swirling motion again, desulfurization lime slurry case (30) is expelled to from high-efficiency cyclone settling vessel (1) bottom after being separated the compressed precipitation of mud formed, after desulfurization lime slurry stirrer (31) stirs, thionizer (33) is transported to by lime slurry lift pump (32) together with the supplementary lime added, desulfurization wastewater to enter flocculation reaction case (11) and the compound iron liquid that adds carries out flocculation reaction from entering after high-efficiency cyclone settling vessel (1) upper lateral part flows automatically PH surge tank (4) adjust ph after purification after coagulating case (8) mixes with the organosulfur liquid added, enter waste water again and clarify concentration basin (15) together with the PAM liquid added, the mud of precipitation is sent into chamber-type press filter (21) through the sludge lifting pump (20) that mud scraper (16) feeding waste water clarification concentration basin (15) outside that waste water clarifies concentration basin (15) bottom is installed and is carried out press filtration, mud after press filtration is sent into after paddle-dryer (24) drying through worm conveyor (22) and is transported by dewatered sludge transfer roller (26), the waste gas produced in paddle-dryer (24) drying process processes qualified discharge by after tornado dust collector (27) dedusting through exhaust gas treating tower (29), the waste water that waste water clarification concentration basin (15) is clarified enters in clear water and discharges in case (17) and hydrochloric acid and rear discharge up to standard, the waste liquid that chamber-type press filter (21) press filtration produces then again is got back to waste water clarification concentration basin (15) and is entered clarification.
2. lime according to claim 1-gypsum wet desulfurization wastewater mud sub-prime and minimizing treatment unit, it is characterized in that described pH regulator case (4) top is measured feeding machine by pipeline with the star of slaked lime feed bin (5) and is connected, be provided with PH in pH regulator case (4) and regulate stirrer (6) and pH meter (7), the side bottom opening of pH regulator case (4) is connected with coagulating case (8).
3. lime according to claim 1-gypsum wet desulfurization wastewater mud sub-prime and minimizing treatment unit, it is characterized in that described coagulating case (8) top exports with organosulfur medicine liquor metering case (9) volume pump to be connected by pipeline, install coagulation stirrer (10) in coagulating case (8), coagulating case (8) middle and upper part, side perforate is connected with flocculation reaction case (11).
4. lime according to claim 1-gypsum wet desulfurization wastewater mud sub-prime and minimizing treatment unit, it is characterized in that described flocculation reaction case (11) top exports with compound iron medicine liquor metering case (12) volume pump to be connected by pipeline, stirrer (13) is installed in flocculation reaction case (11), its a upper lateral part water outlet by pipeline elder generation and the volume pump of PAM medicine liquor metering case (14) export be connected after clarify concentration basin (15) again with waste water water inlet pipe be connected.
5. lime according to claim 1-gypsum wet desulfurization wastewater mud sub-prime and minimizing treatment unit, it is characterized in that exporting with the volume pump of hydrochloric acid medicine liquor metering case (18) with the top of discharge case (17) in described clear water being connected by pipeline, be provided with in clear water and stirrer (19) in clear water and in discharge case (17), in clear water, with a upper lateral part of discharge case (17), delivery pipe be installed.
6. lime according to claim 1-gypsum wet desulfurization wastewater mud sub-prime and minimizing treatment unit, it is characterized in that the outlet of described sludge lifting pump (20) is connected with the inlet pipe of chamber-type press filter (21) by pipeline, the discharge port of chamber-type press filter (21) is connected with worm conveyor (22) opening for feed, worm conveyor (22) discharge port is connected with the opening for feed (23) of paddle-dryer (24) by pipeline.
7. lime according to claim 1-gypsum wet desulfurization wastewater mud sub-prime and minimizing treatment unit, it is characterized in that the dewatered sludge discharge port (25) of described paddle-dryer (24) is connected with dewatered sludge transfer roller (26) opening for feed by pipeline, the escape pipe of paddle-dryer (24) is connected with tornado dust collector (27) inlet pipe by pipeline, tornado dust collector (27) outlet pipe is connected by pipeline with induced draft fan (28) inlet pipe, and induced draft fan (28) outlet pipe is connected with exhaust gas treating tower (29) inlet pipe by pipeline.
8. lime according to claim 1-gypsum wet desulfurization wastewater mud sub-prime and minimizing treatment unit, it is characterized in that, in described desulfurization lime slurry case (30), stirrer (31) is installed, side lower part outlet is connected with lime slurry lift pump (32) inlet pipe by pipeline, and lime slurry lift pump (32) outlet is connected with thionizer (33) fluid inlet by pipeline.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520919433.7U CN205188019U (en) | 2015-11-18 | 2015-11-18 | Lime - gypsum wet flue gas desulfurization waste water mud branch matter and subtract quantization device |
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|---|---|---|---|
| CN201520919433.7U CN205188019U (en) | 2015-11-18 | 2015-11-18 | Lime - gypsum wet flue gas desulfurization waste water mud branch matter and subtract quantization device |
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| CN205188019U true CN205188019U (en) | 2016-04-27 |
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| CN (1) | CN205188019U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347554A (en) * | 2015-11-18 | 2016-02-24 | 北京朗新明环保科技有限公司南京分公司 | Lime-gypsum wet desulphurization wastewater sludge separation and reduction processing device |
| CN112194318A (en) * | 2020-09-28 | 2021-01-08 | 国家电投集团远达环保工程有限公司重庆科技分公司 | Flue gas waste heat concentration method and device for desulfurization wastewater |
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2015
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347554A (en) * | 2015-11-18 | 2016-02-24 | 北京朗新明环保科技有限公司南京分公司 | Lime-gypsum wet desulphurization wastewater sludge separation and reduction processing device |
| CN112194318A (en) * | 2020-09-28 | 2021-01-08 | 国家电投集团远达环保工程有限公司重庆科技分公司 | Flue gas waste heat concentration method and device for desulfurization wastewater |
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