CN102600795A - Sewage treatment bentonite adsorbent and preparation process thereof - Google Patents
Sewage treatment bentonite adsorbent and preparation process thereof Download PDFInfo
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- CN102600795A CN102600795A CN2012100800633A CN201210080063A CN102600795A CN 102600795 A CN102600795 A CN 102600795A CN 2012100800633 A CN2012100800633 A CN 2012100800633A CN 201210080063 A CN201210080063 A CN 201210080063A CN 102600795 A CN102600795 A CN 102600795A
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Abstract
Disclosed are a sewage treatment bentonite adsorbent and a preparation process thereof. Bentonite which is rich in source, wide in spreading and capable of being obtained locally is used as a main raw material for making the adsorbent and is mixed with industrial aluminum sulfate and water. The formula and the preparation process of the adsorbent are reasonable, the preparation process can be controlled automatically by the aid of microcomputers and can be completed by advanced operation means, and production cost of the adsorbent is reduced due to the fact that the raw materials are cheap. The bentonite adsorbent is used for sewage treatment, fast in response and high in COD (chemical oxygen demand) removal rate, enables impurity in water, especially organic suspended matters, to deposit thoroughly, is evident in effect of treating domestic sewage (while having fine assisting effect of treating industrial waste water) and is low in cost and price. As the bentonite adsorbent serves as a sewage treatment agent, sewage treatment cost can be reduced greatly, and both economic benefit of sewage treatment enterprises and social wealth can be increased.
Description
Technical field
The present invention relates to a kind of bentone adsorbent and preparing process thereof that is used for industrial wastewater and sanitary sewage disposal.
Background technology
" diatomite water treatment agent and the technology " (national inventing patent: ZL96122377.4) that is on the leading domestic level at present; Be to utilize diatomite ore to make sewage-treating agent for raw material; For a new road has been created in industrial wastewater and sanitary sewage disposal, and with its " reduced investment, take up an area of little, ton water treatment integrated cost expense is low " characteristics be that new century ecological, environmental protective construction provides strong technical support.Slightly inadequate is diatomite ore (3.2 hundred million tons of China's diatomite reserves, more than 20 hundred million tons of prospective reserves; Mainly concentrate on East China and the Northeast) (the bentonitic reserves of China are No. 1 in the world, and gross reserves accounts for 60% of world's total amount, and proved reserves are more than 50.87 hundred million tons greatly far away from the bentonite ore reserves; Reserves is greater than 7,000,000,000 tons, and A wide selection of colours and designs, and it is wide to distribute; Spread all over 26 provinces and cities, Guangxi is one of main place of production), the diatomite price is also high than bentonite; Compare to reach same treatment effect, adopt the comparable employing diatomite of the cost of sewage disposal sewage-treating agent of bentonite sewage-treating agent to reduce more than 30%.
Summary of the invention
The object of the invention: the processing cost of industrial wastewater and sanitary sewage is generally higher at present.With the sanitary sewage disposal is example, adopts traditional biochemical process technology, and ton sewage disposal integrated cost takes more than 0.75 yuan; Adopt diatomite inorganic agent and technology thereof, ton sewage disposal integrated cost takes about 0.35 yuan; And adopting our bentonite in treatment agent and process matched therewith thereof, ton sewage disposal integrated cost can be controlled in below 0.25 yuan.Therefore, exploitation bentonite sewage-treating agent and preparing process thereof select aboundresources, cheap bentonite to deal with the agent raw material, can reduce cost of sewage disposal by a larger margin, improve the business economic benefit, increase the wealth of society.
The principle of the invention: bentonite (Bentonite) be a kind of be the nonmetallic minerals of key component by smectite type mineral; Montmorillonite mineral then is to be sandwiched in 2: 1 type crystal structure that aluminium (magnesium)-oxygen (hydroxyl) octahedral sheet therebetween constitutes by two-layer silicon-oxygen tetrahedral sheet and one deck; Because the silicon in silicon-oxygen tetrahedral sheet can be replaced by aluminium; Aluminium (magnesium) in aluminium (magnesium)-oxygen (hydroxyl) octahedral sheet can be by with valency or at a low price cation replacement; Thereby the generation electronegativity, make it have good cation exchange property; And bentonite has bigger surface area (600-800m
2/ g), supervene huge surface ability, make it have bigger adsorption capacity.These characteristics and diatomite are approximate, and alternative diatomite is used for sewage disposal, thereby reduce cost of sewage disposal.
The technical scheme that the present invention takes: bentonite in powder is broken to the 30-100 order, with massive industrial aluminum sulfate [Al
2(so
4)
2.xH
2O] be crushed to about 50 orders, the two gets into horizontal mixer and is mixed, and slowly add the water that accounts for bentonite and industrial aluminum sulphate gross weight about 10% in the ratio of 2 (bentonites) than 1 (industrial aluminum sulphate), is stirred into grume, is called bentone adsorbent.Preparing process is implemented microcomputer automatic control and online demonstration.Select red bentonite (being suitable for the big sewage of colourity such as non-ferrous metal, coal, printing and dyeing), white bentonite (being applicable to reuse water), grey bentonite (being applicable to sanitary sewage) respectively for use according to different useless (dirt) water again; Bentone adsorbent named respectively be 1# adsorbent, 2# adsorbent, 3# adsorbent, form the bentonite series adsorbent.Its consumption in sewage, the pollution level that look water is considered when the Automatic Dosing microcomputor program designs.
The specific embodiment
The technological equipment that the present invention implements comprises that infinitely variable speeds horizontal mixer, storage vat, semisphere valve, feeding screw, electronic platform scale, motor-driven valve (batching, discharging) and microcomputer are supporting and gets the raw materials ready and use centrifugal mill.
Technological process: will process fineness and meet the requirements of bentonite, and connect the semisphere valve of pipeline and be installed in ducted feeding screw, electronic platform scale, motor-driven valve control, and get into infinitely variable speeds (rotating speed 300-1000 rev/min) horizontal mixer through the storage vat below; Outlet valve through water controller (interior dress liquid level gauge) adds water and advances horizontal mixer, stirs from slow to fast to become scattered paste shape in 2 minutes; To process fineness again and meet the requirements of industrial aluminum sulphate; Semisphere valve, feeding screw, electronic platform scale, motor-driven valve control through the storage vat below add horizontal mixer, continue to stir 2 minutes; Become even grume; Discharge through the discharging motor-driven valve then, tinning is subsequent use, and (requiring water content is 70% ± 5% to be finished product; PH value 4-5).Because each parts connects microcomputer through power distribution cabinet and sense line, whole preparation process comprises charging, measures, adds water, mixing speed time and discharging etc. by microcomputer automatic control and online demonstration.
Points for attention: mixing time is unsuitable long, otherwise meeting saboteur chain influences the adsorption treatment effect.
Advantage of the present invention or positive achievement:
(1) bentone adsorbent is used for sewage disposal, and reaction is than very fast, and the COD clearance is high, and particularly organic suspension thing deposition is more thorough to impel in the water impurity, is particularly useful for sanitary sewage disposal, and effect is obvious.For Industrial Wastewater Treatment, good booster action is arranged also.
(2) abundant because of bentonite resource, distribute extensively, can gather materials on the spot, and cheap, similar with the diatomite characteristic, replace, can reduce cost of sewage disposal significantly, improve sewage disposal business economic benefit.
Instance 1:
Get red bentonite ore 300Kg, be processed into 100 order powderies through centrifugal mill; Get massive industrial aluminum sulfate 150Kg, be processed into 45 order powderies through centrifugal mill.With the bentonite that processes, the capacity of pouring into is 1 ton an infinitely variable speeds horizontal mixer earlier; Add water 45Kg more lentamente, stir 2 minutes one-tenth scattered paste shapes from slow to fast; With the industrial aluminum sulphate that processes, add horizontal mixer again, continue to stir 2 minutes, become even grume; Discharge (through detecting water content is 69%, and pH value is 4.7) then.We used this batch bentone adsorbent to be Nanning Sugar-refining and Paper-making Factory's middle-stage wastewater processing carrying out pilot scale at that time; Through detecting effluent quality; " reach or be superior to paper waste discharge standard ", this is that Nanning Sugar-refining and Paper-making Factory is sure to the file of Guangxi district Environmental Protection Agency " about recovering asking for instructions of the former large-scale production of papermaking ".
Instance 2:
Get red bentonite ore 3000Kg, be processed into 90 order powderies through centrifugal mill; Get massive industrial aluminum sulfate 1500Kg, be processed into 50 order powderies through centrifugal mill.With the bentonite that processes, connect the semisphere valve of pipeline and be installed in ducted feeding screw, electronic platform scale, motor-driven valve control through the storage vat below earlier, the entering capacity is 5 tons an infinitely variable speeds horizontal mixer; Outlet valve through water controller adds water 450kg and advances horizontal mixer, and stir about became scattered paste shape in 2 minutes from slow to fast; Again with the industrial aluminum sulphate that processes; Semisphere valve, feeding screw, electronic platform scale, motor-driven valve control through the storage vat below add above-mentioned horizontal mixer, continue to stir 2 minutes; (through detecting water content is 70.3% to become even grume; PH value is 4.4), discharge through the discharging motor-driven valve then, directly be used for bamboo shoot paper mill, east, Baise of Guangxi city middle-stage wastewater and handle.Under the process matched therewith support, water outlet monitoring through area surroundings monitoring station, former Baise, " waste water major pollutants chemical oxygen consumption (COC), bod and suspension " reaches the paper-making industrial waste water discharge standard.
The bentone adsorbent application example:
South Lake, Nanning City moisture is separated out long 30 meters, wide 20 meters, dark 2 meters trial stretch; Preside over test by Guangxi district environmental monitoring central station Laboratory Chief beam profit duckweed, spread with electric pump with ship and spray, throw in the bentone adsorbent finished product; And start the motorboat circulation and stir; Stop to throw in bentone adsorbent after 15 minutes, it is clear that water quality becomes, and fish and microorganism are not found the phenomena of mortality.Lake water after the processing is taken a sample to check, and the result sees the following form:
Attention: when handling industrial wastewater and sanitary sewage, it is an amount of that the bentone adsorbent of input is wanted.If it is excessive to throw in, can cause frost boiling on the contrary, not only cause the water of treated mistake defective, also can cause the waste of bentone adsorbent.
Claims (3)
- Be used for the bentone adsorbent and the preparing process thereof of sewage disposal, its technical characterictic is:1. fill a prescription: bentonite (fineness is the 30-100 order) and industrial aluminum sulphate (fineness is about 50 orders) were by preparation in 2: 1, and amount of water accounts for 10% of above-mentioned two kinds of raw material gross weights.
- 2. technological process: with satisfactory bentonite, connect the semisphere valve of pipeline and be installed in ducted feeding screw, electronic platform scale, motor-driven valve, get into infinitely variable speeds (rotating speed 300-1000 rev/min) horizontal mixer through the storage vat below; Outlet valve through water controller (interior dress liquid level gauge) slowly adds water and advances horizontal mixer, stirs from slow to fast to become scattered paste shape in 2 minutes; Again with satisfactory industrial aluminum sulphate; Through semisphere valve, feeding screw, electronic platform scale, the motor-driven valve of storage vat below, add horizontal mixer, continue to stir 2 minutes; Become even grume (water content about 70%); Discharge through the discharging motor-driven valve at last, tinning is subsequent use, is the bentone adsorbent finished product.
- 3. implementation method: above-mentioned each parts connect microcomputer through power distribution cabinet and sense line, and whole preparation process comprises charging, measures, adds water, mixing speed time and discharging etc. by microcomputer automatic control and online demonstration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210080063.3A CN102600795B (en) | 2012-03-26 | 2012-03-26 | Sewage treatment bentonite adsorbent and preparation process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210080063.3A CN102600795B (en) | 2012-03-26 | 2012-03-26 | Sewage treatment bentonite adsorbent and preparation process thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102600795A true CN102600795A (en) | 2012-07-25 |
| CN102600795B CN102600795B (en) | 2014-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210080063.3A Expired - Fee Related CN102600795B (en) | 2012-03-26 | 2012-03-26 | Sewage treatment bentonite adsorbent and preparation process thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103359814A (en) * | 2013-03-21 | 2013-10-23 | 上海大学 | Method for advanced treatment on landfill leachate tailwater through coagulation-adsorption effect |
| CN106745600A (en) * | 2016-12-17 | 2017-05-31 | 安徽师范大学 | A kind of bentonite/poly aluminium iron silicate composite flocculating agent, preparation method and applications |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1184082A (en) * | 1996-12-04 | 1998-06-10 | 王庆中 | Sewage treatment technology and equipment using refined diatomite as treating agent |
| CN1356270A (en) * | 2000-12-06 | 2002-07-03 | 中国科学院大连化学物理研究所 | Process for preparing natural bentone material used to treat sewage |
-
2012
- 2012-03-26 CN CN201210080063.3A patent/CN102600795B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1184082A (en) * | 1996-12-04 | 1998-06-10 | 王庆中 | Sewage treatment technology and equipment using refined diatomite as treating agent |
| CN1356270A (en) * | 2000-12-06 | 2002-07-03 | 中国科学院大连化学物理研究所 | Process for preparing natural bentone material used to treat sewage |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103359814A (en) * | 2013-03-21 | 2013-10-23 | 上海大学 | Method for advanced treatment on landfill leachate tailwater through coagulation-adsorption effect |
| CN106745600A (en) * | 2016-12-17 | 2017-05-31 | 安徽师范大学 | A kind of bentonite/poly aluminium iron silicate composite flocculating agent, preparation method and applications |
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| Publication number | Publication date |
|---|---|
| CN102600795B (en) | 2014-09-03 |
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Granted publication date: 20140903 Termination date: 20200326 |