CN1456517A - Acid waste water treating process and apparatus - Google Patents
Acid waste water treating process and apparatus Download PDFInfo
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- CN1456517A CN1456517A CN 03133589 CN03133589A CN1456517A CN 1456517 A CN1456517 A CN 1456517A CN 03133589 CN03133589 CN 03133589 CN 03133589 A CN03133589 A CN 03133589A CN 1456517 A CN1456517 A CN 1456517A
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Abstract
A process for treating acidic sewage features use of the neutralizing agent prepared from electro-magnesium dust or light burned magnesium powder, and includes such steps as feeding acidic sewage and neutralizing agent in neutralizing tower, neutralizing reacting, and filtering. Its apparatus is also disclosed. Its advantages are high effect, low cost and compact structure.
Description
Technical field the invention belongs to environmental protection technical field, relates to a kind of industrial acidic wastewater purifying treatment method, the neutralizing agent that is used for treatment of acidic wastewater and equipment.
Background technology is present, and the enterprise with acid in the production technique such as domestic ferrous metallurgy, chemical industry, man-made fiber all discharges acid waste water.In the prior art, when solving acid waste water, divided for two steps in principle, the requirement that concentration is higher than more than the 3-4% is reclaimed; Carrying out below the concentration 3-4% discharged after the neutralizing treatment, and what neutralizing agent was used is expensive lime, Wingdale, soda, caustic soda etc., but country requires the PH=6-9 qualified discharge to acid waste water.Acid waste water is handled the still Technology of the sixties that adopts, its shortcoming is a lot, and labour health condition is poor, the waste resource, the operational administrative complexity, be difficult for realizing automatization control, device systems is huge, and quality can not get guaranteeing, sludge volume is big, many drawbacks such as dehydration bothers, and corrodibility is strong, and overhaul is frequent.As:
A, calcium be neutralization materials in neutralization reaction, the bad control of resiliency difference pH value, maximum can reach PH＞more than 9, can only regulate with the soda acid secondary, sewage backflow rate height directly influences the acid waste water qualified discharge.And the characteristics of electric molten magnesite powder neutralizing agent maximum are only to neutralize, and resiliency is good, and speed of reaction is slowed down until stopping at once during PH=6 in reaction, thereby it is qualified up to standard to guarantee once to neutralize.Acid waste water is handled qualification rate 100%.
B, calcium based material belong to the moderate risk material, as milk of lime etc.Have in transportation, storage, process for preparation that corrodibility is strong, the hidden danger of poor stability, and easy bonding, occluding device and overhaul are frequent, and production overhaul cost is strengthened.Be not easy to realize real automated operation management.
The mud loose measure that c, the wastewater treatment of milk of lime process of acidic produce is big, account for and handle more than 10% of wastewater volume, and electric molten magnesite powder neutralizing agent to produce sludge quantity only be about 5%, and good, the easy precipitation of sludge character, easily thickening, thus greatly reduced the sludge treatment cost.
D, milk of lime neutralizing agent will establish secondary neutralization reaction groove, eventually the control groove because the decision of its physico-chemical property is can not primary treatment qualified up to standard in the Facilities Construction, the system breast is joined breast and is sent breast, and systems such as inclined-plate clarifying basin make complex process, equipment increases, and initial cost is big, the working cost height.And a construction investment of electric molten magnesite powder neutralizing agent economizes about 30% than calcium set section, and the workshop working cost is with 15m
3Manufacturing enterprise's statistics that/h acid waste water is handled can be saved 960,000 yuan/year of productive expenses every year.
China is the country that water resources lacks very much, per capita the not enough world of water resources per capita water resources 1/4.And the whole nation has 1,000,000,000 tons an every year, accounts for 1% acid waste water of national total amount of pollutants discharged.Because existing technology is limit, and fails to obtain good treatment, becomes important river pollution thing in the master stream and directly be discharged into.It is reported that national departments concerned, the whole nation have more than 470 families of all kinds of producers of pickling waste waters.Wherein Steel Mill about more than 240 is tame, because the annual large quantities of sheet material imports of China, so present national each province is all in last cold rolling mill project.Great majority use pickling to steel production pre-treatment.And the discharging that the processing of acid waste water is had, or dilution discharge.At present, the calcium that adopts tradition to fall behind is that the neutralizing agent treatment process is built a neutralization station treatment of acidic wastewater and need be invested 2,100,000 yuan, so be the problem that needs to be resolved hurrily at present to the industrial acidic wastewater purifying treatment.
Chinese patent CN86106532A is disclosed by retrieval is the treatment agent that a kind of processing of being made up of alkaline inorganic compound, polymer binder and water contains the acid waste water of multiple metal ion.Chinese patent 01138004.7 is disclosed to be a kind for the treatment of method for high fluorice acid waste water, is main defluorinating agent with lime carbonate, and calcium oxide is auxilliary defluorinating agent, and part solid sediment is returned as assembling crystal seed.Be applicable to and contain suspended solid, the processing of high fluoric acid wastewater.
Summary of the invention the objective of the invention is for solving the many environmental protection knotty problems in the acid waste water processing, fundamentally realize the technical problem of the automated operation management in the acid waste water treating processes, replacing calcium sodium to tie up in the acid waste water with electric molten magnesite powder neutralizing agent uses, a kind of process for treating acidic sewage method and apparatus is provided.
A kind of process for treating acidic sewage method and apparatus of the present invention content Description:
A kind of process for treating acidic sewage method of the present invention, it is characterized in that: it comprises the following steps:
(1), supplies waste acid water to neutralizing tower
Waste acid water storage is in acid tank 10, and groove is provided with PH, liquid level shows, drives water pump 11 by variable-frequency motor, 12 waste acid water is infeeded in the neutralizing tower 6 by the requirement that water level shows by the road, and disable motor 11 afterwards;
(2), in neutralizing tower, supply neutralizing agent
Adopt electric molten magnesite dedusting ash and light-burning magnesium powder neutralizing agent to handle waste acid water;
Through neutralizing agent opening for feed pipeline 1 neutralizing agent is stored up in feed bin 2, to solid flowmeter 4, by falling into pay-off 5 after the given metering, through transmission system 7 neutralizing agent is transported to neutralizing tower 6 top feeding mouths 33 by changeover valve 3 blankings, upset is discharged in the tower;
(3), neutralization reaction
After neutralizing agent and sour water are sneaked into, stirring system 9 (34-46) starts running, under the stirring action of three layers of impeller 46, spent acid solution has obtained abundant reaction, when pH value reaches 6-9, neutralization reaction is finished, stirring system is stopped transport, and neutralizing tower is through clarification after a while, and clear water can 31 enter pond 30 by the road in the neutralizing tower clarifying area, also can be without clarifying process, directly with all continuous delivery filter of the muddy water behind the neutralizing tower internal reaction;
(4), filter
Reacted muddy water is by 13 controls of neutralizing tower 6 bottom water outlet motorized valves, sump pump 14 15 is delivered to tower sludge water in the strainer 16 by the road, 17 enter pond 30 reusable edibles by the road through the clear water after filter 16 filtrations, clear water after the filtration also can 19,20 be sent into neutralizing tower, storage acid tank respectively by the road, plays the balance of acidity;
Mud after the filtration 22 is delivered to the possum belly 23 that links with it after slush pump 24 by valve 25, is delivered to pressure filter 27 through the pipeline 26 that links by the road, and clear water 28 enters pond 30 by the road after the press filtration, and cachaza falls into groove, pours out.
It is neutralizing agent that treatment agent can adopt dedusting ash, the light-burning magnesium powder of electric molten magnesite, and neutralizing agent its effective constituent of filling a prescription is:
Handling waste acid water (per-cent meter by weight) concentration is: 〉=1～2% o'clock, its effective constituent was: electric molten magnesite dedusting ash granularity 140 orders, drop into by 0.75～1.05%, and PH 〉=6～6.5; Light-burning magnesium powder is neutralizing agent granularity 140 orders, drops into by 0.658～0.95% PH 〉=6～6.5;
When concentration value＜1%, its effective constituent is: electric molten magnesite dedusting ash granularity 140 orders, drop into by 0.68%, and light-burning magnesium powder granularity 140 orders drop into by 0.59%.PH≥6.5
When concentration value＞2%, then use the clear water input neutralizing tower dilution after handling by filter, make acid waste water concentration reach 1～2%, press formulation principle again and operate.
The acid waste water treatment facility is by stirring system in: the neutralizing tower, pipeline, frequency control motor, filter, electrically-controlled valve that stir shaft aligning locating device, neutralizing agent feeding device, the demonstration of spent acid liquid level, neutralizing tower connect are formed, it is characterized in that: neutralizing tower 6 tops are provided with PH acidity and show, liquid level demonstration, import sour water pipeline 12, neutralizing agent opening for feed 33, clear water inlet ductwork 19, stirring transmission system 9; Stir shaft is provided with three layers of lodicule 46 in the tower, axle centre positioning device 8 is fixed on the tower inner bottom surface, the tower bottom be provided with water purification discharge pipe 31 and link, being provided with the valve 13 that connects with the muddy water discharging at the bottom of the tower links, what connect successively is water pump 14, pipeline 15, filter 16, pipeline 22, possum belly 23, slush pump 24, motorized valve 25, pipeline 26, pressure filter 27, press filtration clear water pipeline 28 5 neutralizing agent feeding pipes 1 link with storage bin 2, changeover valve 3 below the feed bin links with solid flowmeter 4, neutralizing agent in the under meter unloads feed chute 5, transmission mechanism 7 and hopper 5 connect by rope sheave, and rope sheave 32 is fixed on the neutralizing tower top; Support ring 34 is fixed on the reaction tower 6, top fastening frame 35 connects with support ring 34, top adjustment bolt 36 uniform being installed on the top fastening frame 35, adjust toply 41, axle center spacer 8 connects with reaction tower 6, and flange 38 is fixed on the axle center spacer 8, support 39 connects with flange 38, driving nut 40 links with support 39, and top 41 connect with driving nut 40, and fitting nut, packing ring 37 and top 41 link;
Step-down gear 42 links with motor 43, and electric machine support 44 lower ends are fixed on the neutralizing tower top, and motor output shaft connects with stir shaft 45, establishes three layers of lodicule 46 on the stir shaft, establishes three for every layer;
The neutralization reaction stirring system that neutralizing tower 6 inside are laid comprises and stirs the axle center setting device;
Feeding device is to neutralizing tower 6 peripheral hardwares one place's automatic charging device 7.
Be provided with the sewage import at the reaction tower top, clear water import neutralizing agent opening for feed, the stirring reaction system, the bottom is provided with rising pipe;
The neutralizing tower Inlet and outlet water adopts frequency control motor adapted water pump, is equipped with automatically controlled valve in the pipeline, and water pump is established reverse checkvalve, and the stir shaft form that is arranged in the neutralizing tower is three layers of stirring, stirs the axle center by the tunable arrangement adjustment.
The present invention has adopted special design and novel Process configuration, and a kind of reduced investment is provided, and working cost is low, and resource is wide, sufficient reacting, and treatment effect is good, compact construction, the waste acid water treatment process method and apparatus of convenient management.After the invention process, conservative calculating accomplishes to recycle by 50% to the waste water after handling.Then economize on water 500,000,000 tons/year, calculate 800,000,000 yuan/year of the expenses of then economizing on water by 1.6 yuan of/ton water prices.Can handle for realize the different concns that spent acid solution produces under improper working condition, main points in invention also are to adopt accurate PH acidity display instrument, the clear water that utilizes strainer 16 to discharge is inserted and is adjusted acidity in storage tank, the neutralizing tower, combine with accurate solid under meter 4, by given neutralization reaction prescription, under stirring action, handle the waste water pH value and can reach 6-9, qualified discharge.Be the dedusting ash in the magnesium ore deposit production that utilizes in electric molten magnesite powder neutralizing agent uses, replace the quickened lime (quickened lime is a steel-making reducing agent) that generally uses now and realize the treatment of wastes with processes of wastes against one another, protected Nonrenewable resources.The mud that produces in the treating processes can send sintering to make ball, and material of construction is made in brickmaking or water conditioner is made in exploitation.Realize the comprehensive utilization of three wastes resource.Acid waste water after the processing can replace new water to do the recirculated water use, is used for the production unit cooling, wetland greening etc.
Description of drawings
Fig. 1 is the process for treating acidic sewage schema
Fig. 2 is an acid waste water treatment facility neutralizing tower structural representation
Embodiment the present invention realizes like this, see Fig. 1, Fig. 2, specify below in conjunction with accompanying drawing, sour water storage tank of the present invention connects through pipeline with reaction tower, the frequency control motor driving water pump that is arranged on the pipeline supplies waste acid water in neutralizing tower, during the transmission mechanism of stirring system is fixed on and cat head, stir shaft lower end in the tower is supported by the axle center setting device, spent acid storage tank and reaction tower are respectively established the automatic acidity of PH and are shown, demonstration can be adjusted to the acidity processing value that meets the demands according to PH acidity in the technology, by the automatic charging device feed, neutralizing agent and spent acid solution are finished reaction by stirring system effect in the reaction tower to neutralizing agent after the precision apparatus metering, reacted liquid separates through filter, clear water usefulness capable of circulation, mud are through mud pumping pressure filter, and mud cake is carried specified location after the press filtration.Have the metering of the neutralizing agent of comfort cushioning performance by strictness, given proportioning, acid solution are under the effect of stirring system, and reaction is qualified up to standard rapidly, but reaction.
Be provided with waste acid water suction culvert 12 at neutralizing tower 6 tops, neutralizing agent opening for feed 33, clear water inlet ductwork 19, the PH acidity tester, height displaying instrument stirs transmission system 9 (34-46), stir shaft 45 is provided with three layers of lodicule 46 in the tower, and axle center tunable arrangement 8 (34-41) is fixed on the tower bottom surface.The tower bottom be provided with water purification discharge pipe 31 and link, be provided with the valve 13 that connects with the muddy water discharging at the bottom of the tower, what connect successively with valve 13 back is water pump 14, pipeline 15, strainer 16, pipeline 22, possum belly 23, slush pump 24, motorized valve 25, pipeline 26, pressure filter 27, clear water pipeline 28, pneumatic line 29, and aqua storage tank 30.
Step-down gear 42 links with motor 43, and electric machine support 44 lower ends are fixed on the neutralizing tower top, and motor output shaft connects with stir shaft 45, establishes three layers of lodicule 46 on the stir shaft, establishes three for every layer.
Neutralizing agent feeding pipe 1 links with storage bin 2, and the changeover valve 3 below the feed bin links with solid flowmeter 4, and neutralizing agent falls into hopper 5 through under meter, and transmission mechanism 7 links by rope sheave 32 with hopper 5, and rope sheave 32 is fixed on neutralizing tower 6 tops.
1, supplies waste acid water to neutralizing tower
Waste acid water storage is in acid tank 10, and groove is provided with the PH liquid level and shows, drives water pump 11 by variable-frequency motor, 12 waste acid water is infeeded in the tower 6 by the requirement that water level shows by the road, and disable motor 11 afterwards.
2, supply neutralizing agent in the neutralizing tower
Main points of the present invention are to adopt electric molten magnesite dedusting ash and light-burning magnesium powder neutralizing agent to handle waste acid water.
The neutralizing agent storage by revolving a valve 3 blankings to solid flowmeter 4, by falling into pay-off 5 after the given metering, is transported to neutralizing tower top feeding mouth 33 through transmission system 7 with neutralizing agent in feed bin 2, upset is discharged in the tower.
3, neutralization reaction
After neutralizing agent and sour water are sneaked into, stirring system 9 (34-46) starts running, under the stirring action of three layers of impeller 46, spent acid solution has obtained abundant reaction, when pH value reaches 6-9, neutralization reaction is finished, stirring system is stopped transport, and neutralizing tower is through clarification after a while, and clear water can 31 enter pond 30 by the road in the neutralizing tower clarifying area, also can be without clarifying process, directly with all continuous delivery filter of the muddy water behind the neutralizing tower internal reaction.
4, filter
Reacted muddy water is by 13 controls of neutralizing tower 6 bottom water outlet motorized valves, and sump pump 14 15 is delivered to tower sludge water in the strainer 16 by the road, and the clear water after filtering through filter 16 17 enters pond 30 reusable edibles by the road.Clear water after the filtration also can 19,20 be sent into neutralizing tower, storage acid tank respectively by the road, plays the balance of acidity.
Mud after the filtration 22 is delivered to the possum belly that links with it after slush pump 24 by valve 25, is delivered to pressure filter 27 through the pipeline 26 that links by the road, and clear water 28 enters pond 30 by the road after the press filtration, and mud cake falls into groove, pours out.
Above-mentioned is the spent acid treating processes of native system one-period, spent acid storage form, neutralizing tower geometrical dimension, material, relevant device capacity and reaction effect are according to handling the water yield, concentration, churning time, the selection of parameter, neutralizing agent shape, investing method and effective component content and determine.
For realizing the easiest material loading of neutralizing agent, the main points of invention are the described place's automatic charging device 7 of establishing in neutralizing tower 6.
Can handle for realize the different concns that spent acid solution produces under improper working condition, main points in invention also are to adopt accurate PH acidity display instrument, the clear water that utilizes strainer 16 to discharge is inserted and is adjusted acidity in storage tank, the neutralizing tower, combine with accurate solid under meter 4, by given neutralization reaction prescription, under stirring action, handle the waste water pH value and can reach 6-9, qualified discharge.The neutralizing agent prescription
Claims (7)
1, a kind of process for treating acidic sewage method, it is characterized in that: it comprises the following steps:
(1), supplies waste acid water to neutralizing tower
The waste acid water storage is in acid tank (10), and groove is provided with PH, liquid level shows, drives water pump (11) by variable-frequency motor, and (12) infeed waste acid water in the tower (6) by the requirement that water level shows by the road, afterwards disable motor (11);
(2), supply neutralizing agent in the neutralizing tower
Adopt electric molten magnesite dedusting ash and light-burning magnesium powder neutralizing agent to handle waste acid water;
Store up neutralizing agent in feed bin (2) (1) by the road, by revolving a valve (3) blanking to solid flowmeter (4), by falling into pay-off (5) after the given metering, through transmission system (7) neutralizing agent is transported to neutralizing tower top feeding mouth (33), upset is discharged in the tower;
(3), neutralization reaction
After neutralizing agent and sour water are sneaked into, stirring system (9) (34-46) starts under the stirring action that operates at three layers of impeller (46), spent acid solution has obtained abundant reaction, when pH value reached 6-9, neutralization reaction was finished, and stirring system is stopped transport, neutralizing tower is through clarification after a while, in the neutralizing tower clarifying area clear water by the road (31) enter pond (30), also can be without clarifying process, directly with the whole delivery filter continuously of reacted muddy water;
(4), filter
Reacted muddy water is by neutralizing tower (6) bottom water outlet motorized valve (13) control, sump pump (14) with tower sludge water by the road (15) deliver in the strainer (16), clear water after process filter (16) filters (17) by the road enters pond (30) reusable edible, also (19), (20) are sent into neutralizing tower, storage acid tank, the balance of an acidity respectively to clear water after the filtration by the road;
Mud after the filtration (22) is by the road delivered to the possum belly (23) that links with it after slush pump (24), by valve (25), deliver to pressure filter (27) through the pipeline that links (26), after the press filtration clear water by the road (28) enter pond (30), mud cake falls into groove, pours out.
2, process for treating acidic sewage method as claimed in claim 1 is characterized in that: it is neutralizing agent that said treatment agent can adopt electric molten magnesite dedusting ash, light-burning magnesium powder, and neutralizing agent its effective constituent of filling a prescription is:
Handling waste acid water (per-cent meter by weight) concentration is: 〉=1～2% o'clock, electric molten magnesite dedusting ash granularity 140 orders dropped into by 0.75～1.05%, PH 〉=6～6.5; Light-burning magnesium powder is neutralizing agent granularity 140 orders, drops into by 0.658～0.95% PH 〉=6～6.5;
Electric molten magnesite dedusting ash granularity 140 orders drop into by 0.68% when concentration value＜1%, and light-burning magnesium powder granularity 140 orders drop into by 0.59% PH 〉=6.5.
3, a kind of acid waste water treatment facility, be by stirring system in: the neutralizing tower, pipeline, frequency control motor, filter, electrically-controlled valve that stir shaft aligning locating device, neutralizing agent feeding device, the demonstration of spent acid liquid level, neutralizing tower connect are formed, it is characterized in that: neutralizing tower (6) top is provided with PH acidity and shows, liquid level demonstration, import sour water pipeline (12), neutralizing agent opening for feed (33), clear water inlet ductwork (19), stirring transmission system (9); Stir shaft is provided with three layers of lodicule (46) in the tower, adjustable axle centre positioning device (8) is fixed on the tower inner bottom surface, the tower bottom be provided with water purification discharge pipe (31) and link, being provided with the valve (13) that connects with the muddy water discharging at the bottom of the tower links, what connect successively is water pump (14), pipeline (15), filter (16), pipeline (22), possum belly (23), slush pump (24), motorized valve (25), pipeline (26), pressure filter (27), press filtration clear water pipeline (28), feeding pipe (1) links with feed bin (2), changeover valve below the feed bin (3) links with solid flowmeter (4), neutralizing agent in the under meter unloads feed chute (5), transmission mechanism (7) connects by rope sheave with hopper (5), and rope sheave (32) is fixed on the neutralizing tower top; Support ring (34) is fixed on the reaction tower (6), top fastening frame (35) connects with support ring (34), top adjustment bolt (36) is uniform to be installed on the top fastening frame (35), adjust top (41), axle center spacer (8) connects with reaction tower (6), flange (38) is fixed on the axle center spacer (8), support (39) connects with flange (38), driving nut (40) links with support (39), top (41) connect with driving nut (40), and fitting nut, packing ring (37) link with top (41);
Step-down gear (42) links with motor (43), and electric machine support (44) lower end is fixed on the neutralizing tower top, and motor output shaft connects with stir shaft (45), establishes three layers of lodicule (46) on the stir shaft, establishes three for every layer.
4, acid waste water treatment facility as claimed in claim 3 is characterized in that: the neutralization reaction stirring system that neutralizing tower (6) inside is laid comprises and stirs the axle center setting device.
5, acid waste water treatment facility as claimed in claim 3 is characterized in that: neutralizing tower (6) peripheral hardware one place's automatic charging device (7).
6, acid waste water treatment facility as claimed in claim 3, it is characterized in that: be provided with sewage induction pipe road (12) at reaction tower (6) top, be provided with clear water inlet ductwork (19), neutralizing agent opening for feed (33), stirring reaction system (9), the bottom is provided with outlet pipeline (31).
7, acid waste water treatment facility as claimed in claim 3, it is characterized in that: neutralizing tower (6) Inlet and outlet water adopts frequency control motor adapted water pump (11), be provided with automatically controlled valve (13), (18), (21), (25) in the pipeline, on the pipeline of water pump (14), reverse checkvalve is set, stir shaft (45) form that is arranged in the neutralizing tower (6) is three layers of stirring, stirs the axle center by the tunable arrangement adjustment.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03133589 CN1456517A (en) | 2003-06-04 | 2003-06-04 | Acid waste water treating process and apparatus |
| CNA2003101200524A CN1515511A (en) | 2003-06-04 | 2003-12-03 | Neutralizing agent for treating acid waste water produced by cold-rolling process in metallurgical industry and its process method |
| CN 200410005161 CN1255339C (en) | 2003-06-04 | 2004-02-12 | Cold rolled acid waste water disposal neutralizer in metallurgical industry and its process method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03133589 CN1456517A (en) | 2003-06-04 | 2003-06-04 | Acid waste water treating process and apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1456517A true CN1456517A (en) | 2003-11-19 |
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ID=29411784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03133589 Pending CN1456517A (en) | 2003-06-04 | 2003-06-04 | Acid waste water treating process and apparatus |
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| CN (1) | CN1456517A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100441527C (en) * | 2006-03-31 | 2008-12-10 | 王涛 | Treatment of acid wastewater in cold rolling neutralizing station |
| CN103319029A (en) * | 2013-07-09 | 2013-09-25 | 沧州市博锐达数控科技有限公司 | Fully-automatic waste acid treatment device |
| CN103937972A (en) * | 2014-05-07 | 2014-07-23 | 苏州皇森机电科技有限公司 | Method for preparing secondary iron alloy from acid washing sludge of sewage treatment plant |
| CN105836952A (en) * | 2016-05-25 | 2016-08-10 | 海南宝来工贸有限公司 | Solar silicon washing waste acid treatment device and method |
| CN106458663A (en) * | 2014-04-28 | 2017-02-22 | 雪福克股份有限公司 | Method and device for producing hydrogen-containing drinking water |
| CN107176712A (en) * | 2017-05-24 | 2017-09-19 | 宁波东钱湖旅游度假区焦式环保科技有限公司 | The method and apparatus of alumina wastewater treatment |
| CN107748240A (en) * | 2017-11-07 | 2018-03-02 | 无锡艾科瑞思产品设计与研究有限公司 | A kind of water quality detecting device |
| CN108840430A (en) * | 2018-07-10 | 2018-11-20 | 天津工业大学 | A kind of electro-catalysis blast furnace dedusting ash reinforcing up-flow anaerobic sludge blanket system |
-
2003
- 2003-06-04 CN CN 03133589 patent/CN1456517A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100441527C (en) * | 2006-03-31 | 2008-12-10 | 王涛 | Treatment of acid wastewater in cold rolling neutralizing station |
| CN103319029A (en) * | 2013-07-09 | 2013-09-25 | 沧州市博锐达数控科技有限公司 | Fully-automatic waste acid treatment device |
| CN106458663A (en) * | 2014-04-28 | 2017-02-22 | 雪福克股份有限公司 | Method and device for producing hydrogen-containing drinking water |
| CN103937972A (en) * | 2014-05-07 | 2014-07-23 | 苏州皇森机电科技有限公司 | Method for preparing secondary iron alloy from acid washing sludge of sewage treatment plant |
| CN103937972B (en) * | 2014-05-07 | 2016-08-24 | 太仓市高泰机械有限公司 | The method that the pickling mud of a kind of sewage treatment plant prepares remelted pig iron alloy |
| CN105836952A (en) * | 2016-05-25 | 2016-08-10 | 海南宝来工贸有限公司 | Solar silicon washing waste acid treatment device and method |
| CN107176712A (en) * | 2017-05-24 | 2017-09-19 | 宁波东钱湖旅游度假区焦式环保科技有限公司 | The method and apparatus of alumina wastewater treatment |
| CN107748240A (en) * | 2017-11-07 | 2018-03-02 | 无锡艾科瑞思产品设计与研究有限公司 | A kind of water quality detecting device |
| CN108840430A (en) * | 2018-07-10 | 2018-11-20 | 天津工业大学 | A kind of electro-catalysis blast furnace dedusting ash reinforcing up-flow anaerobic sludge blanket system |
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