CN105776531A - Ecological matrix of multimedium sewage subsurface infiltration system and preparation method of ecological matrix - Google Patents
Ecological matrix of multimedium sewage subsurface infiltration system and preparation method of ecological matrix Download PDFInfo
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- CN105776531A CN105776531A CN201610273119.5A CN201610273119A CN105776531A CN 105776531 A CN105776531 A CN 105776531A CN 201610273119 A CN201610273119 A CN 201610273119A CN 105776531 A CN105776531 A CN 105776531A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2806—Anaerobic processes using solid supports for microorganisms
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
Abstract
The invention relates to an ecological sewage treatment matrix and a preparation method thereof, in particular to a preparation method of an ecological matrix of a multimedium sewage subsurface infiltration system. The ecological matrix comprises a soil covering layer, a water distribution layer and an infiltration layer; the soil covering layer is composed of meadow brown soil; the water distribution layer is prepared by uniform mixing of meadow brown soil, coal cinder, activated sludge and bentonite, the infiltration layer, the water distribution layer and the soil covering layer of a subsurface infiltration bed body are respectively filled with the mixed matrix from bottom to top, and porosity and permeability of the whole bed body maxtrix layer are analyzed; denitrification effect of the system matrix layer is analyzed. Porosity and permeability of the infiltration system can be improved, ammonia nitrogen adsorption of the infiltration system is improved, and denitrification effect is enhanced. Rice husk of a certain particle size and proportion are added into the infiltration layer, a carbon source is provided for microorganism denitrification, power is provided to the denitrification process, and denitrification capability of the infiltration system is enhanced fundamentally.
Description
Technical field
The present invention relates to a kind of sewage treatment ecological substrate and preparation method thereof, particularly relate to a kind of multimedium underground sewage percolating system ecology substrate and preparation method thereof.
Background technology
Subsurface wastewater infiltration system is a kind of decentralized wastewater land treatment systems technique, specifically refer to sewage controlledly dosing to hypothallus, pollutant are removed by substrate, microorganism and the plant system coupling that coexists, a kind of ecological engineering technology that sewage is purified, this technology can realize collection on the spot, process and the reuse of sewage.Subsurface wastewater infiltration system has that capital construction operating cost is low, administers and maintains simple, the good advantage of outlet effect, but still suffers from that denitrification effect is not good, hold susceptible to plugging shortcoming.The two shortcoming mutual dependence for existence, interrelated: matrix permeability is big, the more difficult blocking of soil, but will cause that system denitrification effect reduces；Otherwise, permeability is little, and denitrification effect improves, but filtration system easily blocks.Therefore, to improve permeability and the denitrification effect of system, the substrate composition changing filtration system is crucial.
The mixed-matrix that current subsurface wastewater infiltration system is generally made up of soil, sand, cinder etc. is filled.Mixed-matrix provides carrier and nutrient substance for ground flora growth on the one hand, depend on interface for growth of microorganism and breeding offer simultaneously, good hydraulics is created on the other hand for sewage seepage flow, and remove pollutant, the quality of direct decision systems water outlet by materialization effects such as the interception of self, filtration, absorption, precipitations.
Summary of the invention
It is an object of the present invention to provide a kind of multimedium underground sewage percolating system ecology substrate and compound method thereof, the present invention can make up deficiency and the limitation of substrate, improve permeability and the pollutional load (hydraulic load) of subsurface wastewater infiltration system simultaneously, prevent system matrix from blocking, consolidation system denitrification effect.
It is an object of the invention to be achieved through the following technical solutions:
A kind of multimedium underground sewage percolating system ecology substrate, described ecological matrix includes overburden layer, water distribution layer and filter layer, and wherein overburden layer is made up of meadow burozem；Water distribution layer is formulated by meadow burozem, cinder, activated sludge and bentonite mix homogeneously, its water distribution layer each raw material volume percentage ratio proportioning is as follows: meadow burozem 40-50%, cinder 35-40%, activated sludge 5-10%, bentonite 5-10%, moisture control is at 5-10%；Filter layer is formulated by meadow burozem, cinder, sand and rice husk mix homogeneously, and its filter layer each raw material volume percentage ratio proportioning is as follows: wherein meadow burozem 45-55%, cinder 30-35%, sand 7-10%, rice husk 3-10%, controls moisture content at 5-10%.
A kind of multimedium underground sewage percolating system ecology substrate, described method includes procedure below:
1. take the deep meadow burozem in 20 centimetres of top layer, farmland, through natural or mechanical air-dry, remove the foreign material such as root system of plant, gravel, after grinding, cross 100 mesh sieves, standby；
2., between sludge of sewage treatment plant, take second pond sedimentation fresh activity mud after filter pressing, natural or machinery is air-dry, milled 20 mesh sieves, standby；
3. take the cinder product after anthracite combustion, cross 3-10 mm sieve, standby；
4. taking sodium bentonite, particle diameter is 200 orders, standby；
5. take rice husk after rice is polished, cross 100 mesh sieves, standby；
6. according to different substrates layer composition, above-mentioned standby substrate being carried out matrix group to join, wherein overburden layer is all made up of meadow burozem；Water distribution layer ecological matrix is prepared according to percent by volume mix homogeneously by meadow burozem, cinder, activated sludge and bentonite；
7. mixed-matrix obtained above is filled into from bottom to top respectively subsurface infiltration bed body filter layer, water distribution layer and overburden layer, analyzes porosity and the permeability of whole bed body hypothallus；And by water quality monitoring, analyze system matrix layer denitrification effect.
Advantages of the present invention and effect be:
The present invention is by adding cinder and the sand of certain particle diameter and ratio, it is possible to improves porosity and the permeability of filtration system, can promote the filtration system absorption to ammonia nitrogen, strengthened denitrification effect simultaneously.By with the addition of certain particle diameter and ratio bentonite in water distribution layer, it is possible to bigger raising filtration system is to ammonia nitrogen absorption, strengthened denitrification effect.By adding the rice husk of certain particle diameter and ratio at filter layer, it is possible to provide carbon source for microorganism Denitrification, provide power for denitrification process, fundamentally strengthening filtration system denitrification ability.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in detail.
Embodiment 1:
A kind of multimedium underground sewage percolating system ecology substrate, mainly includes overburden layer, water distribution layer and filter layer, and wherein overburden layer is mainly made up of meadow burozem；Water distribution layer is uniformly formulated according to certain volume percentage mix by meadow burozem, cinder, activated sludge and bentonite, wherein meadow burozem 40%, cinder 40%, activated sludge 10%, bentonite 10%；Filter layer is uniformly formulated according to certain volume percentage mix by meadow burozem, cinder, sand and rice husk, wherein meadow burozem 45%, cinder 35%, sand 10%, rice husk 10%.
Its compound method is:
1. take the deep meadow burozem in 20 centimetres of top layer, farmland, through natural or mechanical air-dry, remove the foreign material such as root system of plant, gravel, after grinding, cross 100 mesh sieves, standby.
2., between sludge of sewage treatment plant, take second pond sedimentation fresh activity mud after filter pressing, natural or machinery is air-dry, milled 20 mesh sieves, standby.
3. take the cinder product after anthracite combustion, cross 6 mm sieves, standby.
4. taking sodium bentonite, particle diameter is 200 orders, standby.
5. take rice husk after rice is polished, cross 100 mesh sieves, standby.
6. according to different substrates layer composition, above-mentioned standby substrate being carried out matrix group to join, wherein overburden layer is all made up of meadow burozem；Water distribution layer ecological matrix is more formulated than mix homogeneously according to certain volume by meadow burozem, cinder, activated sludge and bentonite, wherein meadow burozem 40%, cinder 40%, activated sludge 10%, bentonite 10%, and moisture control is 7%；Filter layer ecological matrix is more formulated than mix homogeneously according to certain volume by meadow burozem, cinder, sand and rice husk, is wherein meadow burozem 45%, cinder 35%, sand 10%, and rice husk 10%, moisture control is 7%.
7. mixed-matrix obtained above is filled into from bottom to top respectively subsurface infiltration bed body filter layer, water distribution layer and overburden layer, analyzes porosity and the permeability of whole bed body hypothallus；And by water quality monitoring, analyze system matrix layer denitrification effect.
Embodiment 2:
A kind of multimedium underground sewage percolating system ecology substrate, mainly includes overburden layer, water distribution layer and filter layer, and wherein overburden layer is mainly made up of meadow burozem；Water distribution layer is uniformly formulated according to certain volume percentage mix by meadow burozem, cinder, activated sludge and bentonite, wherein meadow burozem 45%, cinder 40%, activated sludge 10%, bentonite 5%；Filter layer is uniformly formulated according to certain volume percentage mix by meadow burozem, cinder, sand and rice husk, wherein meadow burozem 50%, cinder 35%, sand 5%, rice husk 10%.
Its compound method is:
1. take the deep meadow burozem in 20 centimetres of top layer, farmland, through natural or mechanical air-dry, remove the foreign material such as root system of plant, gravel, after grinding, cross 100 mesh sieves, standby.
2., between sludge of sewage treatment plant, take second pond sedimentation fresh activity mud after filter pressing, natural or machinery is air-dry, milled 20 mesh sieves, standby.
3. take the cinder product after anthracite combustion, cross 8 mm sieves, standby.
4. taking sodium bentonite, particle diameter is 200 orders, standby.
5. take rice husk after rice is polished, cross 100 mesh sieves, standby.
6. according to different substrates layer composition, above-mentioned standby substrate being carried out matrix group to join, wherein overburden layer is all made up of meadow burozem；Water distribution layer ecological matrix water distribution layer ecological matrix is more formulated than mix homogeneously according to certain volume by meadow burozem, cinder, activated sludge and bentonite, wherein meadow burozem 45%, cinder 40%, activated sludge 10%, and bentonite 5%, moisture control is 5%；Filter layer ecological matrix is more formulated than mix homogeneously according to certain volume by meadow burozem, cinder, sand and rice husk, wherein meadow burozem 50%, cinder 35%, sand 5%, rice husk 10%, and moisture control is 5%.
7. mixed-matrix obtained above is filled into from bottom to top respectively subsurface infiltration bed body filter layer, water distribution layer and overburden layer, analyzes porosity and the permeability of whole bed body hypothallus；And by water quality monitoring, analyze system matrix layer denitrification effect.
Embodiment 3:
A kind of multimedium underground sewage percolating system ecology substrate, mainly includes overburden layer, water distribution layer and filter layer, and wherein overburden layer is mainly made up of meadow burozem；Water distribution layer is uniformly formulated according to certain volume percentage mix by meadow burozem, cinder, activated sludge and bentonite, wherein meadow burozem 50%, cinder 35%, activated sludge 10%, bentonite 5%；Filter layer is uniformly formulated according to certain volume percentage mix by meadow burozem, cinder, sand and rice husk, wherein meadow burozem 55%, cinder 30%, sand 10%, rice husk 5%.
Its compound method is:
1. take the deep meadow burozem in 20 centimetres of top layer, farmland, through natural or mechanical air-dry, remove the foreign material such as root system of plant, gravel, after grinding, cross 100 mesh sieves, standby.
2., between sludge of sewage treatment plant, take second pond sedimentation fresh activity mud after filter pressing, natural or machinery is air-dry, milled 20 mesh sieves, standby.
3. take the cinder product after anthracite combustion, cross 10 mm sieves, standby.
4. taking sodium bentonite, particle diameter is 200 orders, standby.
5. take rice husk after rice is polished, cross 100 mesh sieves, standby.
6. according to different substrates layer composition, above-mentioned standby substrate being carried out matrix group to join, wherein overburden layer is all made up of meadow burozem；Water distribution layer ecological matrix is that meadow burozem, activated sludge, cinder and bentonite mix according to certain volume ratio, wherein meadow burozem 50%, cinder 35%, activated sludge 10%, and bentonite 5% moisture control is 10%；Filter layer ecological matrix is that meadow burozem, cinder, sand and rice husk mix according to certain volume ratio, wherein meadow burozem 55%, cinder 30%, sand 10%, and rice husk 5%, moisture control is 10%.
7. mixed-matrix obtained above is filled into from bottom to top respectively subsurface infiltration bed body filter layer, water distribution layer and overburden layer, analyzes porosity and the permeability of whole bed body hypothallus；And by water quality monitoring, analyze system matrix layer denitrification effect.
Claims (2)
1. a multimedium underground sewage percolating system ecology substrate, it is characterised in that described ecological matrix includes overburden layer, water distribution layer and filter layer, and wherein overburden layer is made up of meadow burozem；Water distribution layer is formulated by meadow burozem, cinder, activated sludge and bentonite mix homogeneously, its water distribution layer each raw material volume percentage ratio proportioning is as follows: meadow burozem 40-50%, cinder 35-40%, activated sludge 5-10%, bentonite 5-10%, moisture control is at 5-10%；Filter layer is formulated by meadow burozem, cinder, sand and rice husk mix homogeneously, and its filter layer each raw material volume percentage ratio proportioning is as follows: wherein meadow burozem 45-55%, cinder 30-35%, sand 7-10%, rice husk 3-10%, controls moisture content at 5-10%.
2. a multimedium underground sewage percolating system ecology preparation method of base material, it is characterised in that described method includes procedure below:
Take the deep meadow burozem in 20 centimetres of top layer, farmland, through natural or mechanical air-dry, remove the foreign material such as root system of plant, gravel, after grinding, cross 100 mesh sieves, standby；
From between sludge of sewage treatment plant, take second pond sedimentation fresh activity mud after filter pressing, natural or mechanical air-dry, milled 20 mesh sieves, standby；
Take the cinder product after anthracite combustion, cross 3-10 mm sieve, standby；
Taking sodium bentonite, particle diameter is 200 orders, standby；
Take rice husk after rice is polished, cross 100 mesh sieves, standby；
According to different substrates layer composition, above-mentioned standby substrate being carried out matrix group join, wherein overburden layer is all made up of meadow burozem；Water distribution layer ecological matrix is prepared according to percent by volume mix homogeneously by meadow burozem, cinder, activated sludge and bentonite；
Mixed-matrix obtained above is filled into from bottom to top respectively subsurface infiltration bed body filter layer, water distribution layer and overburden layer, analyzes porosity and the permeability of whole bed body hypothallus；And by water quality monitoring, analyze system matrix layer denitrification effect.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187702A (en) * | 2018-09-17 | 2019-01-11 | 东北大学 | A kind of in-situ oxidation reduction potential test device of indoor simulation subsurface wastewater infiltration system |
| CN110304706A (en) * | 2019-07-29 | 2019-10-08 | 中国有色桂林矿产地质研究院有限公司 | A kind of soil-mineral composite and its preparation method and application of barrier heavy metal pollution in situ |
| CN111362395A (en) * | 2020-03-06 | 2020-07-03 | 沈阳大学 | Ecological matrix for improving denitrification of subsurface infiltration system and preparation method thereof |
| CN114062417A (en) * | 2021-11-26 | 2022-02-18 | 东北大学 | Sewage subsurface infiltration device for simulating freeze-thaw cycle and using method thereof |
| CN114702142A (en) * | 2022-04-11 | 2022-07-05 | 中国环境科学研究院环境技术工程有限公司 | Ecological bacteria-rich filler special for water purification and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187702A (en) * | 2018-09-17 | 2019-01-11 | 东北大学 | A kind of in-situ oxidation reduction potential test device of indoor simulation subsurface wastewater infiltration system |
| CN110304706A (en) * | 2019-07-29 | 2019-10-08 | 中国有色桂林矿产地质研究院有限公司 | A kind of soil-mineral composite and its preparation method and application of barrier heavy metal pollution in situ |
| CN111362395A (en) * | 2020-03-06 | 2020-07-03 | 沈阳大学 | Ecological matrix for improving denitrification of subsurface infiltration system and preparation method thereof |
| CN114062417A (en) * | 2021-11-26 | 2022-02-18 | 东北大学 | Sewage subsurface infiltration device for simulating freeze-thaw cycle and using method thereof |
| CN114702142A (en) * | 2022-04-11 | 2022-07-05 | 中国环境科学研究院环境技术工程有限公司 | Ecological bacteria-rich filler special for water purification and preparation method thereof |
| CN114702142B (en) * | 2022-04-11 | 2022-12-06 | 中国环境科学研究院环境技术工程有限公司 | Ecological bacteria-rich filler special for water purification and preparation method thereof |
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Application publication date: 20160720 |