CN1025909C - Manufacturing method of aluminium-irons and irons solid water cleaning agent - Google Patents
Manufacturing method of aluminium-irons and irons solid water cleaning agent Download PDFInfo
- Publication number
- CN1025909C CN1025909C CN 88109178 CN88109178A CN1025909C CN 1025909 C CN1025909 C CN 1025909C CN 88109178 CN88109178 CN 88109178 CN 88109178 A CN88109178 A CN 88109178A CN 1025909 C CN1025909 C CN 1025909C
- Authority
- CN
- China
- Prior art keywords
- mud
- iron
- aluminium
- slag mud
- sulfuric acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention provides a production method for aluminum iron and iron solid water purifying agents. Iron water treatment medicaments, such as iron polymerization water purifying agents, etc., are used for processing the sludge of tanning sewage, and react with oxidizing agents firstly under normal temperature and normal pressure after natural drying or manual drying to prepare iron solid water purifying agents, or immediately react with aluminium hydrate powder to prepare aluminum iron solid water purifying agents. The present invention has the advantages of simple manufacturing process, convenient operation, investment saving, extensive utilization of sludge and waste slag, low product cost, strong coagulation ability, convenient transportation, storage and use, etc., and develops a new approach for regenerating and utilizing sludge and waste slag.
Description
The present invention relates to dispose of sewage with the production method of solid water purifier, particularly about the production method of ferrous solid water purification agent.
The processing of daily tanning sewage, all using ferrous sulfate, bodied ferric sulfate iron such as (PFS) is that water treatment agent is made delivering medicament.By processes such as coagulation, precipitation or come-ups, remove organic matter and inorganic matter in the sewage, cost is low, and effect is better, and sludge dewatering is easy.But a large amount of mud that thereupon bring are headachy secondary pollutions.The trouble evil situation that this mud produced also has in industries such as aluminium alloys.At present, in general wastewater treatment, all also generally use aluminum sulfate aluminium series water purifiers such as (AS).Its cohesion ability is strong, and flocculate is big, and precipitation or come-up are easy, and product can also be made solid.But sludge dewatering is not good, hydrolysis and smelly easily.And iron series water purifier such as bodied ferric sulfate (PFS) etc., aboundresources, product cost is lower, and the cohesion ability is stronger, removes functions such as sulfide in addition, and sludge dewatering is easy, not facile hydrolysis and smelly.Cause the water quality yellowing easily but iron ion is residual in water, common product is liquid.Because the custom in people's uses, add that iron series water purifier of new generation is on the price and can't the substitution of Al series water purifier in the application.
Purpose of the present invention is exactly to utilize above-mentioned tanning sewage in a large number, and the sewage sludge waste slag after handling such as aluminium alloy processing acid pickle, make it to be regenerated as the use in waste water treatment flocculating agent, and product is a solid, and the composite water purifying agent of aluminium system, iron series water purifier characteristics is arranged again.To satisfy the needs of daily wastewater treatment.
Specific implementation method of the present invention is:
One. the selection of raw material and preparation
A. the preparation of slag mud
Selecting iron such as ferrous system of polymerized water purifier, ferrous sulfate solution for use is after water treatment agent is handled tanning sewage, concentrated through inclined tube or plate and frame filter press etc., as to dewater, discharge rust or iron black look mud, to moisture content 5～8%, be called slag mud by air dry or artificial drying.During artificial drying, can not be with straight fire roasting or in pot, fry, in order to avoid ferrous components changes and influences product quality in the slag mud.Slag mud has the ozochrotia flavor slightly, and outward appearance is rust or iron brown bulk or particle.And then broken, screen to granularity 50 orders～5 centimetres and do not wait, be needed raw material.Be not mixed with impurity such as earth, lime, cement block in the slag mud, do not make the quality that influences product.
The preparation of b, aluminium-hydroxide powder
Aluminium-hydroxide powder required for the present invention is to utilize in the aluminium alloy processing to turn over the cylinder waste liquid after the pickling, again with waste residue as raw material that neutralization precipitation became such as sheet alkali.Waste residue is the hard solid of canescence, main aluminium hydroxide, proportion about 2.4.By artificial pulverizing, be ground to certain fineness, as 80 orders.Must not add other article such as moisture etc. in the aluminium-hydroxide powder.
The preparation of c, oxidant
The oxidant that the present invention selects for use is a technical grade sulfuric acid, H
2SO
4About content 98%, proportion 1.84.Must not be diluted during use, do not contained other compositions such as phenol, hydrochloric acid, titanium in the acid solution.
Two, the making of ferrous solid water purification agent
To add in acid-proof enamel or the ceramic reactor after 100 parts in above-mentioned ready slag mud (weight ratio, the down together) weighing, reactor should dry no moisture.The weighing concentrated sulfuric acid is 8～10 parts then, and slag mud is stirred on the limit, and the limit slowly adds acid solution.The white foam because the strong dehydration and the oxidation of the concentrated sulfuric acid, the slag mud that contacts with sulfuric acid are emerged at once, a moment, slag mud did not just generate heat, and constantly gave out the hot gas with sweet tart flavour.Along with the stirring that progressively adds and do not stop of acid solution is stirred, slag mud changes native white or field gray into gradually by original rust or iron brown, and particle is loose non-caked, and the temperature on slag mud surface raises gradually, and the reactor outer wall also can have warmth sensation.After oxidant adds, stir again and stir 1～2 minute, if the slag mud taking-up reactor of heating, allow its natural slaking 2～3 hours, slag mud is cooled to room temperature gradually, and outward appearance is transformed into lead white or taupe gray.After the screening packing, promptly become ferrous solid water purification agent.After the concentrated sulfuric acid adds, stir and to stir slag mud 1～2 minute, add 8～10 parts of the aluminium-hydroxide powders of weighing immediately, and make it rapidly to be evenly distributed on the slag mud particle.At this moment, stir the slag mud that is stirring and become lead white or taupe gray very soon, slag mud temperature is more and more higher, the hot gas that gives out in the slag mud reduces gradually, after 5～10 minutes, just can stop to stir, allow about 2～3 hours of its natural slaking, slag mud is cool to room temperature gradually just.The screening packing just becomes another ferrous solid water purification agent.Two products all have acid smell, and packing should be noted sealing, in case moisture absorption and influence product quality.
In the whole operation process, must not add entry or other band water article, especially oxidant can not dilute.The concentrated sulfuric acid also can not add reactor quickly, and the easy like this slag mud bonding that makes is agglomerating, causes and does wet inequality, and is living ripe irregular, will influence the quality of product.
Oxidant quantity should not be many again, do so easily to make slag mud bonding agglomerating, both increased product cost, make product sticking for a long time wet again, and it is bad to dewater, and are unfavorable for operating the raising with product quality.Slag mud amount also should not be many again, it seems that output has increased, and cost has reduced, but because of the oxidant content deficiency, oxidation weakens, and occur giving birth to ripe irregular phenomenon, will reduce the cohesion ability of product greatly.
In the present invention, the control of slag mud moisture content also is the weight factor that influences product quality.Moisture content increases in the slag mud, and dewatering time prolongs, and makes the balling-up that bonds easily of slag mud on the one hand, and the oxidation of oxidant is reduced, and the result produces a kind of underproof product.On the contrary, moisture content reduces to below 5% in the slag mud, takes a lot of work and takes cost, also is not suitable for suitable.
The ferrous solid water purification agent that the present invention produces all is inorganic cation flocculating agents, and outward appearance is that lead white or taupe gray are sticking, and granularity 50 orders～5 centimetres do not wait, and pH value is acidity, proportion 0.8～0.90, and total iron content 〉=12%, wherein ferric iron content is more than 98%.Contain Al in the ferrous solid water purification agent of aluminium
2O
3Content 〉=8%.The solubility (24 hour in) of solid residue in water all≤1%.Can in pH4～14 scopes, use, both can directly drop in the waste water and use, also can be dissolved into liquid in 1: 3～5 ratio (with ferrous solid water purification agent is 1, weight ratio) and use with clear water, but must be now with the current.Dosage in waste water is generally 0.5～5 grams per liter waste water (Gu agent).Usually, clearance＞90% of waste water suspension (SS), clearance 〉=50% of chemical oxygen consumption (COC) (COD).
Advantage of the present invention is: technology is simple, behaviour is with convenient, reduced investment, product cost is low, the cohesion ability is strong, and sludge dewatering is easy, has functions such as devulcanization thing concurrently, transportation, store, use very convenient, can be widely used in process hides, printing and dyeing, chemical industry, dyestuff, papermaking, food and domestic sewage treating.If can also create tens million of economic worths in national promotion and implementation.Thereby, significant effect is arranged on environmental protection, economic benefit.
Embodiment one:
1. raw material is prepared
A. slag mud.Wuxi County tannery uses the mud after the self-control ferrous system of polymerized water purifier is handled this enterprise tanning sewage, draws off after the plate and frame filter press press filtration, and mud is rust.To moisture content 8%, fragmentation is filtered into 50 orders～5 and centimetre is not waited particle again, and the ozochrotia flavor is arranged through air dry.Do not contain impurity such as earth, lime, cement block in the slag mud.
B. aluminium-hydroxide powder.Turn over the cylinder waste liquid after the aluminium section bar pickling of Wuxi County aluminium alloy factory, the waste residue with behind the sheet alkali neutralization precipitation is the hard solid of canescence, proportion about 2.4, and artificial the pulverizing is ground to 80 order powder.Do not add in the powder as other article such as water.
C. oxidant preparing
Use commercially available industrial sulphuric acid, white is transparent, H
2SO
4Content 98%, proportion 1.84 does not contain other compositions such as phenol, hydrochloric acid, titanium in the acid solution.
2, proportioning test
Take by weighing 1 kilogram of slag mud, add in the enamel basin of dry gram moisture, take by weighing the 80 gram concentrated sulfuric acids again, the limit is stirred slag mud limit and is slowly added acid solution.The slag mud that contacts with the concentrated sulfuric acid white foam of emerging at once, just heating of slag mud for a moment, the enamel basin outer wall has tepor, constantly gives out the hot gas with sweet tart flavour in the slag mud.Along with the progressively adding of acid solution, slag mud is transformed into white by original rust, and particle is loose non-caked, the heating of enamel basin outer wall.After acid solution adds, stir again and stirred slag mud 1～2 minute, promptly the slag mud of part heating is taken out as iron series water purifier, allow its natural slaking.Slag mud is reduced to room temperature after 2 hours, and becomes lead white, weighs 305 gram ferrous solid water purification agents, and product has acid smell slightly.After part exoslag mud takes out, in remainder, add 55 gram aluminium-hydroxide powders immediately, and stir slag mud rapidly, aluminium-hydroxide powder is evenly distributed on the slag mud particle of heating.Because the further aggravation of dehydration, the enamel basin outer wall has a slight fever hot.At this moment, slag mud becomes lead white very soon, and the hot gas that gives out in the slag mud with sweet tart flavour also reduces gradually.Just stop after 5～10 minutes stirring, allow its natural slaking, after 3 hours, slag mud is just reduced to room temperature, and weighing gets the ferrous solid water purification agent that 785 grams contain aluminium.The product acid stink is less.
3. test result
A iron is solid purificant
Proportion: 0.83.Total iron content: 19.96%, ferric iron content wherein: 19.96%.
B. the ferrous solid water purification agent proportion that contains aluminium: 0.83.Total iron content: 19.96%, ferric iron content wherein: 19.96%, Al
2O
3Content: 7.87%.
Embodiment two
1. raw material is prepared
A. slag mud.Wuxi County Leather Factory handles mud behind our factory's sewage with ferrous sulfate solution, and mud is by discharging in the tilted plate separator, and outward appearance is iron black look, and it is more to contain moisture.Be the iron brown after air dry, moisture content is 5%.Be filtered into 50 orders～5 centimetre granularity through fragmentation again.Slag mud has the ozochrotia flavor, but does not contain impurity such as earth, lime, cement block.
B. aluminium-hydroxide powder.Identical with example one.
C. oxidant preparing
This factory's process hides industrial sulphuric acid, sulfuric acid content is about 98%, acid solution is pure.
2. proportioning test
Take by weighing 17 kilograms of slag mud and add in the ceramic cylinder earlier, the cylinder inner drying does not have moisture.And then taking by weighing 1.7 kilograms of concentrated sulfuric acids, the limit is stirred slag mud limit and is slowly added in three batches.After acid solution added, the slag mud that is stirring gave out a burst of hot gas with sweet tart flavour, and slag mud also graduates into field gray by original iron brown.The cylinder outer wall has the temperature sense.Acid solution added the back 3～5 minutes, and slag mud particle is loose non-caked.Take out the part iron series water purifier, allow its natural slaking, after 3 hours, promptly reduce to room temperature, it is taupe gray that outward appearance is.Weighing gets 3.3 kilograms of ferrous solid water purification agents, and product has acid smell.After taking out ferrous solid water purification agent, in remainder, add 1.3 kilograms of aluminium-hydroxide powders at once, stir slag mud fast, make it even distribution.At this moment, the heating of slag mud particle is scalded one's hand, and the hot acid gas that distributed originally just fades away for a moment, and slag mud becomes taupe gray very soon.Stop after 5～10 minutes stirring, allow its natural slaking.After 3 hours, particle has warm slightly, and weighing gets 14.8 kilograms of ferrous solid water purification agents that contain aluminium, and product is with acid smell slightly.
3. test result
A. ferrous solid water purification agent
Proportion: 0.88.Total iron content: 12.24%, ferric iron content wherein: 12.24%.
B. the ferrous solid water purification agent that contains aluminium
Proportion: 0.88.Total iron content: 12.24%, ferric iron content wherein: 12.24%.Al
2O
3Content: 9.72%.
Claims (8)
1, a kind of is that the mud that water treatment agent is handled behind the tanning sewage is raw material with iron, prepares the method for ferrous solid water purification agent, it is characterized in that:
1), be that drying sludge to the weight moisture capacity that water treatment agent is handled behind the tanning sewage is 5-8% with iron, slag mud;
2), slowly add the sulfuric acid weight concentration and be 98% the described slag mud of industrial concentrated sulfuric acid oxidation, its weight proportion is a slag mud: the concentrated sulfuric acid=100: 8-10, and stir simultaneously.
2, according to the method for claim 1, described mud is with the mud behind the ferrous sulfate processing tanning sewage.
3, method according to claim 1, described slag mud are crushed to the particle of 50 orders-5 centimetre.
4, a kind of is that the mud that water treatment agent is handled behind the tanning sewage is raw material with iron, prepares the method for aluminium-ferrous solid water purification agent, it is characterized in that:
1), be that drying sludge to the weight moisture capacity that water treatment agent is handled behind the tanning sewage is 5-8% with iron, slag mud;
2), slowly add the sulfuric acid weight concentration and be 98% the described slag mud of industrial concentrated sulfuric acid oxidation, its weight proportion is a slag mud: the concentrated sulfuric acid=100: 8-10, and stir simultaneously;
3) add aluminium-hydroxide powder, while hot, and stir rapidly, its weight proportion is a slag mud: the concentrated sulfuric acid: aluminium hydrate powder=100: 8-10: 8-10.
5, method according to claim 4, described mud are with the mud behind the ferrous sulfate processing tanning sewage.
6, according to the described method of claim 4, described slag mud is ground into the particle of 50 orders-5 centimetre.
7, according to the described method of claim 4, described aluminium-hydroxide powder is the waste residue of pickle liquor behind sheet alkali neutralization precipitation in the aluminium alloy processing.
8, according to claim 4 or 7 described methods, described aluminium-hydroxide powder is 80 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88109178 CN1025909C (en) | 1988-12-29 | 1988-12-29 | Manufacturing method of aluminium-irons and irons solid water cleaning agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88109178 CN1025909C (en) | 1988-12-29 | 1988-12-29 | Manufacturing method of aluminium-irons and irons solid water cleaning agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1043884A CN1043884A (en) | 1990-07-18 |
| CN1025909C true CN1025909C (en) | 1994-09-14 |
Family
ID=4835371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88109178 Expired - Fee Related CN1025909C (en) | 1988-12-29 | 1988-12-29 | Manufacturing method of aluminium-irons and irons solid water cleaning agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1025909C (en) |
-
1988
- 1988-12-29 CN CN 88109178 patent/CN1025909C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1043884A (en) | 1990-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102372308B (en) | Process for producing polymeric aluminum ferric chloride coagulating agent by using pickling waste water containing iron | |
| JP2002500953A (en) | Conditioning method for sewage sludge dewatering | |
| CN101397181A (en) | Inorganic composite conditioner and sludge dewatering method thereof | |
| CN110981056B (en) | Treatment method of sulfuric acid process titanium dioxide washing wastewater | |
| CN108840534B (en) | The method of aluminium processing enterprise waste sludge comprehensive utilization production water treatment agent aluminum sulfate | |
| CN105271397A (en) | Production method of titanium dioxide capable of reducing water consumption | |
| CN1025909C (en) | Manufacturing method of aluminium-irons and irons solid water cleaning agent | |
| US2858269A (en) | Coagulation and sludge conditioning | |
| CN115305574B (en) | Method for rapidly preparing whisker by using phosphogypsum and saline | |
| CN1160253C (en) | Production process of composite water purifying agent polymeric aluminum ferric sulfate | |
| CN1052963C (en) | Prodn. tech for barium sulfate | |
| CN1063407C (en) | Method for treatment of waste acid liquid containing copper production of gluside and sodium saccharin | |
| CN1752032B (en) | Treatment and recovery technology for mixed acid from industrial waste water 3,3-dichlorobenzidine hydrochloride | |
| CN104402102B (en) | A kind of dyeing waste water strenuous primary treatment coagulant and preparation method thereof | |
| CN1105686C (en) | Low-aluminium water purifying agent and its production process | |
| CN1035473C (en) | Process for producing solid poly-ferric sulfate | |
| CN1104612A (en) | Reclaiming of waste gypsum | |
| CN1067962C (en) | Process for producing poly-iron chloride | |
| CN1141251C (en) | Comprehensive treatment process of producing active carbon with papermaking effluent | |
| CN1032852C (en) | High-effective composite coagulant and its manufacturing method | |
| CN1082836A (en) | Produce the method for calcareous food additive | |
| CN112441676A (en) | Method for treating acid wastewater of titanium dioxide by sulfuric acid process | |
| CN104030369A (en) | Method for producing nickel aluminum hydrotalcite by utilizing nickel-containing wastewater intercalation | |
| CN109336353A (en) | A kind of online Opsonizing method of deeply dehydrating sludge | |
| CN1070649A (en) | A kind of production method of extracting low-ester pectin from sunflower disc |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |