CN103663703A - Method for preparing filter material with an earthworm treatment layer in an earthworm biofilter from inorganic filter material - Google Patents
Method for preparing filter material with an earthworm treatment layer in an earthworm biofilter from inorganic filter material Download PDFInfo
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- CN103663703A CN103663703A CN201310612619.3A CN201310612619A CN103663703A CN 103663703 A CN103663703 A CN 103663703A CN 201310612619 A CN201310612619 A CN 201310612619A CN 103663703 A CN103663703 A CN 103663703A
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Abstract
The invention provides a method for preparing a filter material with an earthworm treatment layer in an earthworm biofilter from an inorganic filter material. The whole filter material comprises the earthworm treatment layer, a middle layer and a bearing layer, wherein the bearing layer comprises a crude quartz block and large zeolite, and has the effects of guiding waste water and removing part of contaminants; the middle layer comprises small quartz sand and zeolite particles, and has the effects of achieving a filtering effect, better removing the contaminants and preventing the filter material with small particle size on an upper layer from being discharged into outlet water. The earthworm-layer filter material is formed by mixing an organic filter material with the inorganic filter material, wherein the organic filter material is wood flour and peat moss, and the inorganic filter material is the zeolite particles. The wood flour, the peat moss and the zeolite particles are uniformly mixed in the volume ratio of 1:2:1, and the filter material is laid on the surface of the middle layer, so that the preparation of the filter material in the whole earthworm biofilter is finished. According to the prepared filter material, earthworms can better live and grow, the waste water treatment effect is good, and the earthworm biofilter runs stably.
Description
Technical field
The present invention relates to environmental technology field, particularly, relate to the Worm biological filter tank filtrate preparation method that the inorganic filtrate of a kind of use is made dealing with earthworm layer.
Background technology
Worm biological filter tank is a kind of method of utilizing earthworm and microorganism acting in conjunction to process organic sewage.It is earthworm layer, middle layer and supporting layer that Worm biological filter tank filtrate is generally divided into three layers.Earthworm layer is the place of earthworm and most of microorganism existence in Worm biological filter tank, is the core machinery in filter tank.The selection of filtrate is extremely important, and a kind of good filtrate should both be conducive to the formation of microbial film, should be conducive to again the existence of earthworm, just can impel filter tank effectively to dispose of sewage.
Through the retrieval to prior art, the patent of existing Worm biological filter tank aspect, as Chinese patent ZL200610025883.7, ZL200810201394.1 etc., but these patents are focused on the design of whole filter tank or mainly used organic filtrate as dealing with earthworm layer, complete organic filtrate can provide the earthworm required environment of surviving well, but easily stops up, local ponding, cause earthworm dead, microbial reproduction is also easily influenced simultaneously, thereby affects steady running and the pollutant removal in filter tank.
Summary of the invention
For defect of the prior art, the object of this invention is to provide the inorganic filtrate of a kind of use and make Worm biological filter tank dealing with earthworm layer, thereby and then add the method that middle layer that inorganic filtrate forms and supporting layer are prepared Worm biological filter tank filtrate, meet earthworm metafiltration material as the requirement of earthworm and the two carriers of microorganism.
Find after deliberation, the dealing with earthworm metafiltration material of Worm biological filter tank should both be applicable to earthworm existence, was applicable to again microorganism growth, and existing certain sewage treating efficiency can not make again filter tank stop up.Thereby filtrate should be soft amorphous, be rich in organic matter, the physical strength of filtrate and chemical stability, specific surface area and particle diameter, surface hydrophilicity and surface charge, surfaceness and porosity, tap density and voidage etc. should meet the requirement of earthworm existence and sewage disposal simultaneously.Therefore the present invention is based on this, following method is provided.
The present invention is achieved by the following technical solutions:
The invention provides the inorganic filtrate of a kind of use and make the Worm biological filter tank filtrate preparation method of dealing with earthworm layer, whole filtrate is from top to bottom comprised of three layers of dealing with earthworm layer, middle layer and supporting layers, and described method comprises the steps:
First preparing nethermost supporting layer, is highly 40-50cm.This layer is comprised of thick quartz wedge layer and bulk zeolite layer, and bulk zeolite layer is positioned on thick quartz wedge layer, mainly plays the effect of sewage water conservancy diversion, and the microorganism of growth on it, also has the effect of removing part pollutent.
Then preparing middle layer, is highly 30-40cm.This layer is comprised of little quartz sand layer and zeolite granular layer, and zeolite granular layer is positioned on little quartz sand layer, and main filtration, can remove pollutent preferably, stops the small particle size filtrate on upper strata to enter in water outlet simultaneously.
Prepare afterwards the superiors' dealing with earthworm layer, this layer adds inorganic filtrate by organic filtrate and is mixed in proportion and forms, and organic filtrate is wood chip and eriophorum peat soil, and inorganic filtrate is zeolite granular, and wood chip, eriophorum peat soil, zeolite granular by volume 1:2:1 mix.After mixing, filtrate is layered on to the surface in above-mentioned middle layer, laying is highly 30-40cm, has completed the preparation of whole Worm biological filter tank filtrate.Throw in earthworm, until earthworm population dynamics is basicly stable in whole matrix, become ripe dealing with earthworm layer.This layer is the core of Worm biological filter tank, plays the effect of the dirty water pollutant of main removal.The filtrate of Worm biological filter tank is prepared completely like this, and passing into sewage can move.
Preferably, in described supporting layer: nethermost thick quartz wedge particle diameter is 3-4cm left and right, and thick quartz wedge layer height is 20-30cm.Large perpleexite particle diameter on thick quartz wedge layer is 1-3cm left and right, is highly 30-40cm.Sum of the two is 40-50cm.The combined strength of two-layer filtrate is larger, can play the supporting role to upper layer preferably, also can remove preferably pollutent simultaneously.
Preferably, in described middle layer: little quartz sand particle size is below 0.3-0.8cm left and right, and little quartz sand layer height is 10-20cm.Zeolite granular particle diameter on little quartz sand layer is long 15-30mm, wide 10-20mm, and thick 1-8mm left and right, zeolite granular layer height is 10-20cm.Sum of the two is 30-40cm.It is fast that little quartz sand has filtration velocity, good filtration effect, and stable effluent quality, the feature such as does not stop up, do not lump.The middle layer that these two kinds of filtrates form, can play the effect of removing the pollutents such as nitrogen phosphorus preferably.
Preferably, described wood chip is long 3-10mm, wide 4-12mm, and the thick small pieces that are less than 1mm, described eriophorum peat soil is less than the organic soil of being rich in of 1mm for particle diameter.Wood chip and eriophorum peat are all to have light weight, soft physical properties, and are rich in organic chemical property, can well provide living environment for earthworm.Simultaneously also for microorganism provides existence place.
The long 15-30mm of zeolite granular particle diameter of the present invention, wide 10-20mm, thick 1-8mm left and right, is the natural molecule sieve with premium propertiess such as density is little, acid and alkali-resistance, radiation hardness, specific surface area are large, absorption switching performance is strong, is a kind of good sewage disposal filtrate.
Preferably, described input earthworm is to throw in earthworm by the density of 1000 grams every cubic metre.
Compared with prior art, the present invention has following beneficial effect:
Dealing with earthworm layer in the present invention mixes by wood chip, eriophorum peat, zeolite granular, adds the inorganic filtrate of zeolite, and the retentiveness that can improve organic filtrate in general Worm biological filter tank is high, the earthworm anoxic escaping phenomena that ventilates and cause for hypoxgia; The organic filtrate wherein still using can avoid earthworm body wall in filter tank, to be subject to the physical abrasion of inorganic filtrate and the earthworm of causing escapes and dead.Meanwhile, organic filtrate and inorganic filtrate are jointly for the existence of adhering to of microorganism provides place.Mix filtrate and jointly met the existence of earthworm and the demand that microorganism survives, improved the efficiency of sewage disposal.
Accompanying drawing explanation
By reading the detailed description of non-limiting example being done with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:
Fig. 1 is the inventive method schema.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art further to understand the present invention, but not limit in any form the present invention.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement.These all belong to protection scope of the present invention.
Embodiment:
In certain sewage disposal place, made a kind of Worm biological filter tank, preparation method is as follows for its filtrate, as shown in Figure 1.
1. first prepare nethermost supporting layer, in the bottom in filter tank, spread the thick quartz wedge of particle diameter 3-4cm left and right, thick quartz wedge layer height is 20-30cm, after thick quartz wedge layer surface dressing is smooth, spread the large perpleexite of particle diameter 1-3cm left and right in the above, bulk zeolite layer height is 30-40cm, then that bulk zeolite layer surface dressing is smooth.Sum of the two height is 40-50cm.This layer mainly plays the effect of sewage water conservancy diversion, and after sewage water distribution for some time, on it, the microorganism of growth, also can remove part pollutent.
2. then prepare middle layer.At above-mentioned bulk zeolite surface, spread little quartz sand, particle diameter is 0.3-0.8cm, is highly 10-20cm, little quartz sand layer surface dressing is smooth, repave zeolite granular, zeolite granular particle diameter is long 15-30mm, wide 10-20mm, thick 1-8mm, zeolite granular layer height is 10-20cm.Sum of the two height is 30-40cm.Then surface dressing is smooth.The main filtration of this layer, has stronger pollutant removal effect, can stop the small particle size filtrate on upper strata to enter in water outlet simultaneously.
3. the last the superiors' dealing with earthworm layer of preparing, spreads mixing filtrate on the surface of above-mentioned zeolite granular.This mixing filtrate adds inorganic filtrate by organic filtrate and is mixed in proportion and forms, and organic filtrate is wood chip and eriophorum peat soil, and inorganic filtrate is zeolite granular.Wood chip is long 3-10mm, wide 4-12mm, the thick small pieces that are less than 1mm.The long 15-30mm of zeolite granular particle diameter, wide 10-20mm, thick 1-8mm left and right.Wood chip, eriophorum peat soil, zeolite granular by volume 1:2:1 mix.After mixing, filtrate being layered on to the surface in above-mentioned middle layer, is highly 30-40cm.The filtrate of whole Worm biological filter tank completes.
4. after filtrate is filled in, start water distribution, when water outlet outward appearance and the basic indifference of water inlet, put into earthworm, earthworm choosing is put body colour ruddy, healthy and strong Eisenia foetida or An Deai sensitive, the obvious reproduction endless belt of tool and is won earthworm, and input density is 10000 grams every cubic metre earthworm metafiltration material.
Implementation result:
After filter tank is stable, this earthworm layer is to Pollutant Treatment effect in sewage: COD clearance is 20-42.0%, and average removal rate reaches 28.9%.Ammonia nitrogen removal frank is 43.2-78.2%, average removal rate large 67.6%.The wastewater treatment efficiency that shows earthworm layer is better.The life growth that earthworm energy is good, filter tank can steady running.The removal efficiency of the dirty water pollutant of whole Worm biological filter tank is respectively: COD clearance is greater than 80%, and ammonia nitrogen removal frank is greater than 78%.The composition and the proportioning that show this filter are suitable, and wastewater treatment efficiency is better.
Above specific embodiments of the invention are described.It will be appreciated that, the present invention is not limited to above-mentioned specific implementations, and those skilled in the art can make various distortion or modification within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (6)
1. of inorganic filtrate, make a Worm biological filter tank filtrate preparation method for dealing with earthworm layer, it is characterized in that, whole Worm biological filter tank filtrate is comprised of dealing with earthworm layer, middle layer and supporting layer, and described method comprises the steps:
First preparing nethermost supporting layer, is highly 40-50cm, and this layer is comprised of thick quartz wedge layer and bulk zeolite layer, and bulk zeolite layer is positioned on thick quartz wedge layer, plays the effect of sewage water conservancy diversion, and the microorganism of growth on it, also has the effect of removing part pollutent;
Then preparing middle layer, is highly 30-40cm, and this layer is comprised of little quartz sand layer and zeolite granular layer, and zeolite granular layer is positioned on little quartz sand layer, and filtration can be removed pollutent preferably, stops the small particle size filtrate on upper strata to enter in water outlet simultaneously;
Prepare afterwards the superiors' dealing with earthworm layer, this layer adds inorganic filtrate by organic filtrate and is mixed in proportion and forms, organic filtrate is wood chip and eriophorum peat soil, and inorganic filtrate is zeolite granular, and wood chip, eriophorum peat soil, zeolite granular by volume 1:2:1 mix, after mixing, filtrate is layered on to the surface in above-mentioned middle layer, laying is highly 30-40cm, throws in earthworm, until earthworm population dynamics is basicly stable in whole matrix, become ripe dealing with earthworm layer.
2. the Worm biological filter tank filtrate preparation method that the inorganic filtrate of use according to claim 1 is made dealing with earthworm layer, is characterized in that, in described supporting layer: nethermost thick quartz wedge particle diameter is 3-4cm, thick quartz wedge layer height is 20-30cm; Large perpleexite particle diameter on thick quartz wedge layer is 1-3cm, is highly 30-40cm; This two-layer height sum is 40-50cm.
3. the Worm biological filter tank filtrate preparation method that the inorganic filtrate of use according to claim 1 is made dealing with earthworm layer, is characterized in that, in described middle layer: little quartz sand particle size is below 0.3-0.8cm, little quartz sand layer height is 10-20cm; Zeolite granular particle diameter on little quartz sand layer is long 15-30mm, wide 10-20mm, and thick 1-8mm, zeolite granular layer height is 10-20cm; This two-layer height sum is 30-40cm.
4. the Worm biological filter tank filtrate preparation method who makes dealing with earthworm layer according to the inorganic filtrate of the use described in claim 1-3 any one, is characterized in that, described wood chip is long 3-10mm, wide 4-12mm, the thick small pieces that are less than 1mm.
5. according to the inorganic filtrate of of described in claim 1-3 any one, make the Worm biological filter tank filtrate preparation method of dealing with earthworm layer, it is characterized in that, described eriophorum peat soil is less than the organic soil of being rich in of 1mm for particle diameter.
6. the Worm biological filter tank filtrate preparation method who makes dealing with earthworm layer according to the inorganic filtrate of the use described in claim 1-3 any one, is characterized in that, described input earthworm is to throw in earthworm by the density of 1000 grams every cubic metre.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104163552A (en) * | 2014-09-05 | 2014-11-26 | 郭云征 | Organic wastewater treatment method |
| CN109796083A (en) * | 2019-03-20 | 2019-05-24 | 山东大学 | A kind of microorganism attachment base and its preparation method and application |
| CN111153488A (en) * | 2020-01-13 | 2020-05-15 | 南京公诚节能新材料研究院有限公司 | Composite biological filter material |
Citations (3)
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| FR2856396A1 (en) * | 2003-06-18 | 2004-12-24 | Voisin Jean Sa | Waste water treatment unit, e.g. for remote home, has one or more tanks planted with reeds and containing filtering layers of granular material in different sizes |
| CN1843978A (en) * | 2006-04-20 | 2006-10-11 | 上海交通大学 | Method for preparing filtration material for earthworm biofilter |
| CN102329053A (en) * | 2011-09-06 | 2012-01-25 | 同济大学 | Combined set for treating micro-polluted source water in counties and towns |
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2013
- 2013-11-26 CN CN201310612619.3A patent/CN103663703B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2856396A1 (en) * | 2003-06-18 | 2004-12-24 | Voisin Jean Sa | Waste water treatment unit, e.g. for remote home, has one or more tanks planted with reeds and containing filtering layers of granular material in different sizes |
| CN1843978A (en) * | 2006-04-20 | 2006-10-11 | 上海交通大学 | Method for preparing filtration material for earthworm biofilter |
| CN102329053A (en) * | 2011-09-06 | 2012-01-25 | 同济大学 | Combined set for treating micro-polluted source water in counties and towns |
Non-Patent Citations (2)
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| 张斐斐，李银生，邱江平等: "蚯蚓生物滤池污水处理效率与蚯蚓氧化应激响应研究", 《上海交通大学学报（农业科学版）》, vol. 31, no. 5, 31 October 2013 (2013-10-31) * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104163552A (en) * | 2014-09-05 | 2014-11-26 | 郭云征 | Organic wastewater treatment method |
| CN109796083A (en) * | 2019-03-20 | 2019-05-24 | 山东大学 | A kind of microorganism attachment base and its preparation method and application |
| CN111153488A (en) * | 2020-01-13 | 2020-05-15 | 南京公诚节能新材料研究院有限公司 | Composite biological filter material |
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