CN102399045A - Composite medicament for fixing nitrogen and phosphorous in riverbed sludge, and preparation and application method thereof - Google Patents
Composite medicament for fixing nitrogen and phosphorous in riverbed sludge, and preparation and application method thereof Download PDFInfo
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- CN102399045A CN102399045A CN2010102815437A CN201010281543A CN102399045A CN 102399045 A CN102399045 A CN 102399045A CN 2010102815437 A CN2010102815437 A CN 2010102815437A CN 201010281543 A CN201010281543 A CN 201010281543A CN 102399045 A CN102399045 A CN 102399045A
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Abstract
The invention discloses a composite medicament for fixing nitrogen and phosphorous in riverbed sludge, and a preparation method and an application method thereof. The composite medicament disclosed herein comprises 90-99 wt% of powdered zeolite and 1-10 wt% of polymer ferric sulfate, and is prepared by mixing powdered zeolite and polymer ferric sulfate according to the proportion, and preparing into particles through mechanical molding. When using the composite medicament, the composite medicament is uniformly put into the water environment of rivers and lakes, and the dosage of the composite medicament is 0.5-2 kg/m<2>. The composite medicament has the advantages of low preparation cost, and good effect, can fast sink to the bottom when putting the composite medicament into water, uniformly disperses, effectively inhibits the release of endogenous nitrogen, phosphor, heavy metal, organic matters and the like, reduces the pollutant concentration of the overlying water, improves the water-bed ecological environment, and reduces eutrophication level and the occurrence of risk of water.
Description
Technical field
The invention belongs to water environment pollution control techniques field, be specifically related to pollutent such as lake, a kind of fixedly river substrate sludge nitrogen phosphorus, suppress compound and preparation and method of use that water body endogenous pollution thing discharges, purifies water.
Background technology
Bed mud is the important component part of water ecosystem; The self-purification of water body comprises dilution, deposition, absorption, biolysis etc.; Wherein bed mud absorption and biolysis are the principal modes of water pollutant migration and conversion, and bed mud has vital role to self.Because trade effluent, sewage etc. enter water body in a large number, also can pollute bed mud in the time of water quality deterioration.Exist a kind of running balance that absorbs and discharge between bed mud and the water body, when water pollution was serious, the part pollutent was moved in the bed mud through effects such as deposition, absorption; When external source pollute necessarily controlled after, endogenous pollution, promptly the release of pollutent can become the important source of water pollution in the bed mud.Pollutent in the bed mud comprises nutritive element (nitrogen, phosphorus), organism, heavy metal etc.Sediment pollution has become worldwide environmental problem at present, and the harbour, Amsterdam of the Great Lakes region of the U.S., Holland, the Han Baogang of Germany, sediment pollution are all very serious.In China, the bed mud in lake, most river has also received pollution in various degree.
Sediment pollution control techniques commonly used is divided into dystopy control techniques and technological two types of in-situ control.The dystopy control techniques mainly is the bed mud dredging.Promptly through excavating the polluted bed mud on top layer, control and minimizing pollutants in sediments discharge, thereby play the effect that improves quality of water environment.But this engineering amount is big, and cost is high, can cause certain destruction to the ecosystem in lake, river, and the engineering Failure cases also has appears in the newspapers.And the in-situ control technology mainly contains technology such as original position covering, microbial preparation.The original position covering needs a large amount of covertures (like cleaning bed mud, sand or gravel etc.), reduces the water body volume, influences aquatic ecological, is not suitable for river, lake and landscape water body, relatively is applicable to deep-sea sediment pollution control; The microbial preparation cost is high, and the quality guaranteed period is short, and effect slowly also receives the water surrounding condition restriction, is difficult to use on a large scale.Therefore, development and operation convenient, with low cost, use widely that the sediment pollution control techniques has the important engineering meaning.
Summary of the invention
The object of the invention is to overcome the prior art deficiency, and the compound and preparation method thereof and the method for use of lake, a kind of fixedly river substrate sludge nitrogen phosphorus is provided.
The compound of lake, fixedly river provided by the present invention substrate sludge nitrogen phosphorus is made up of the material of following quality percentage composition: zeolite powder 90%-99% and bodied ferric sulfate 1%-10%.
Said compound can be that the zeolite powder of 93%-97% and the bodied ferric sulfate of 3%-7% are formed by the quality percentage composition further.
Said compound exists with the particulate form, and said particle grain size is preferably 3-10mm.
The preparation method of compound provided by the present invention comprises the steps: zeolite powder and the bodied ferric sulfate ratio mixing according to mass ratio 90-99: 1-10, processes the particle that particle diameter is 3-10mm through mechanical-moulded, promptly obtains said compound.
The method of use of compound provided by the present invention is that said compound is evenly thrown to the lake water environment of river, and dosage is 0.5-2kg/m
2
The characteristic of active principle among the present invention:
Zeolite powder: zeolite powder is to form by natural zeolite is levigate.Zeolite is the aluminium silicate mineral of a kind of shape structure forming of slag, is mostly pearl, and present known zeolite has kind more than 40, be used for natural zeolite that water surrounding handles main be clinoptilolite.Flourishing hole, duct are arranged in the zeolite framework, and the passage through opening between the hole is connected with each other, and links up with the external world.The volume of hole and passage generally accounts for more than 50% of its crystal volume in the zeolite; Therefore zeolite has bigger specific surface area; Has absorption property preferably; And be a kind of selection absorption of molecular sieve, strong and molecular diameter has very strong adsorptivity less than the ammonia nitrogen of zeolite cavities channel diameter to polarity.In addition, the molecular structure basis of zeolite is silicon (aluminium) oxygen tetrahedron, the silicon in the silicon-oxy tetrahedron; Can be constituted aluminum-oxygen tetrahedron by the aluminium atomic substitutions, because the aluminium atom is tervalent, so there is the electricity price of a Sauerstoffatom not obtain neutralization in the aluminum-oxygen tetrahedron; Make whole aluminum-oxygen tetrahedron electronegative, offset by positive charges such as potassium ion, sodium ion, calcium ion, mg ions, and these positively charged ions and tetrahedron bonded are more weak; Can carry out cationic exchange; But do not destroy zeolite crystal structure, therefore, zeolite has ion-exchange performance.In addition, zeolite also has certain adsorption effect to organism and heavy metal.Zeolite also contains hydrocoles and grows required whole major elements with most of micro-, and these elements all exist with ionic condition, can be utilized by hydrocoles.Qualified zeolite powder ammonia absorption value is generally greater than 100mg/100g, and zeolite powder used in the present invention confirms that than the choosing back specific surface area is big through multiple zeolite powder being carried out performance, and silica alumina ratio is low, and ammonia absorption value is up to 700mg/100g.
Bodied ferric sulfate: bodied ferric sulfate is a kind of novel, high-quality, efficient molysite class inorganic polymer flocculant, and is for faint yellow unformed powdery solid, soluble in water.Its purifying water effect is good, does not contain objectionable impuritiess such as aluminium, chlorine and heavy metal ion, and also iron-free ionic water shifts, and is widely used in the purifying treatment of tap water, process water, landscape water, various trade effluent, municipal effluent, sludge dewatering etc.Bodied ferric sulfate has good effect of removing to phosphorus, can also reduce turbidity in addition, remove partial organic substances, heavy metal.The used bodied ferric sulfate performance index of the present invention meet State Standard of the People's Republic of China's " water conditioner bodied ferric sulfate " (GB14591-2006).
Compound product provided by the present invention is the fine particle shape, and is easy to use, can sink to the bottom fast after evenly throwing to the water surrounding, is uniformly dispersed; Cost is low, and is effective, through pollutents such as the nitrogen in effective fixedly water body of effects such as adsorption-flocculation and the bed mud, phosphorus, organism, heavy metals; Reducing pollutants in sediments discharges; Reduce the overlying water Pollutant levels, improve water-bed ecotope, reduce water body eutrophication degree and occurrence risk.
Embodiment
The present invention will be described through specific embodiment below, but the present invention is not limited thereto.
Experimental technique described in the following embodiment like no specified otherwise, is ordinary method; Said reagent and material like no specified otherwise, all can obtain from commercial sources.
Embodiment 1, the preparation fixedly lake, river substrate sludge nitrogen phosphorus compound and the processing water body effect
Preparation is the compound of lake, river substrate sludge nitrogen phosphorus fixedly:
Zeolite powder and bodied ferric sulfate are mixed according to mass ratio at 95: 5, process the particle that particle diameter is 3-10mm, promptly get said compound through mechanical-moulded.
Utilize above-mentioned compound to handle water body:
Certain city river, owing to trade effluent, sewage etc. enter for a long time in a large number, water quality is relatively poor, is in bad V class (nitrogen, phosphorus especially exceed standard) throughout the year, and the water bloom of water body phenomenon takes place frequently.The top layer sediment pollution is very serious, black in color, frowziness.Two zones selecting area adjacent in the river course to equate surround with iron sheet, are numbered 1,2, and wherein No. 1 is control zone, and No. 2 is pilot region.The consumption that adds compound in No. 2 zones is 1kg/m
2Carry out two all serial sampling monitorings, monitoring result shows, the ammonia nitrogen in No. 2 zones, total nitrogen, total phosphorus, COD
CrUltimate density respectively than the reduction in No. 1 zone 45%, 41%, 69%, 27%, during the monitoring, No. 1 the zone has the wawter bloom phenomenon to take place, and No. 2 zones are not obvious.
Table 1 control zone with add the area monitoring index relatively
(measuring method of each index carries out with reference to the method in the following document in the table 1: water and effluent monitoring analytical procedure [M]. Beijing: China Environmental Science Press, 2002.).
Claims (7)
1. the fixing compound of lake, river substrate sludge nitrogen phosphorus is made up of the material of following quality percentage composition: zeolite powder 90%-99% and bodied ferric sulfate 1%-10%.
2. compound according to claim 1 is characterized in that: said compound is made up of the material of following quality percentage composition: zeolite powder 93%-97% and bodied ferric sulfate 3%-7%.
3. according to each described compound among the claim 1-2, it is characterized in that: said compound exists with particle form.
4. compound according to claim 3 is characterized in that: said particle grain size is 3-10mm.
5. the method for preparing each said compound among the claim 1-4 comprises the steps: zeolite powder and bodied ferric sulfate evenly according to each described mixed among the claim 1-4, and the mechanical-moulded particle of processing promptly obtains said compound.
6. method according to claim 5 is characterized in that: said particle grain size is 3-10mm.
7. the method for use of each said compound among the claim 1-4 is characterized in that: said compound is evenly thrown to the lake water environment of river, and dosage is 0.5-2kg/m
2
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| CN2010102815437A CN102399045A (en) | 2010-09-13 | 2010-09-13 | Composite medicament for fixing nitrogen and phosphorous in riverbed sludge, and preparation and application method thereof |
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| CN2010102815437A CN102399045A (en) | 2010-09-13 | 2010-09-13 | Composite medicament for fixing nitrogen and phosphorous in riverbed sludge, and preparation and application method thereof |
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Cited By (8)
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|---|---|---|---|---|
| CN104230131A (en) * | 2014-09-12 | 2014-12-24 | 哈尔滨工业大学深圳研究生院 | Method for synchronously controlling release of nitrogen and phosphorus as well as smell-causing substances in polluted sediment |
| CN104529105A (en) * | 2014-12-31 | 2015-04-22 | 泉州师范学院 | Low pollution dispersal ecological dredging method achieved by conducting dosing assistance under spatial and temporal scale control |
| CN105417593A (en) * | 2015-11-24 | 2016-03-23 | 中国科学院地球化学研究所 | In-situ passivation technology for eutrophication lake sediment |
| CN105600897A (en) * | 2016-02-04 | 2016-05-25 | 西南大学 | Compound treatment agent for landscape water body |
| CN110642355A (en) * | 2019-09-29 | 2020-01-03 | 云南佳贝节能科技有限公司 | Wastewater treatment process |
| CN110776222A (en) * | 2019-09-19 | 2020-02-11 | 北京化工大学 | Preparation and application of sediment nitrogen and phosphorus fixing and repairing agent |
| CN113797888A (en) * | 2021-09-30 | 2021-12-17 | 海南大学 | Iron-loaded cement-based composite particle adsorption material and preparation method thereof |
| CN114716119A (en) * | 2022-02-28 | 2022-07-08 | 中国地质大学（武汉） | Coupling treatment method for bottom sediment conditioning and pollutant resistance control |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104230131A (en) * | 2014-09-12 | 2014-12-24 | 哈尔滨工业大学深圳研究生院 | Method for synchronously controlling release of nitrogen and phosphorus as well as smell-causing substances in polluted sediment |
| CN104529105A (en) * | 2014-12-31 | 2015-04-22 | 泉州师范学院 | Low pollution dispersal ecological dredging method achieved by conducting dosing assistance under spatial and temporal scale control |
| CN105417593A (en) * | 2015-11-24 | 2016-03-23 | 中国科学院地球化学研究所 | In-situ passivation technology for eutrophication lake sediment |
| CN105600897A (en) * | 2016-02-04 | 2016-05-25 | 西南大学 | Compound treatment agent for landscape water body |
| CN105600897B (en) * | 2016-02-04 | 2018-07-17 | 西南大学 | A kind of method of inorganic agent processing landscape water |
| CN110776222A (en) * | 2019-09-19 | 2020-02-11 | 北京化工大学 | Preparation and application of sediment nitrogen and phosphorus fixing and repairing agent |
| CN110642355A (en) * | 2019-09-29 | 2020-01-03 | 云南佳贝节能科技有限公司 | Wastewater treatment process |
| CN113797888A (en) * | 2021-09-30 | 2021-12-17 | 海南大学 | Iron-loaded cement-based composite particle adsorption material and preparation method thereof |
| CN114716119A (en) * | 2022-02-28 | 2022-07-08 | 中国地质大学（武汉） | Coupling treatment method for bottom sediment conditioning and pollutant resistance control |
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Application publication date: 20120404 |