CN103663864B - Method for preparing filter material with earthworm treatment layer in earthworm biofilter by aerated concrete block - Google Patents
Method for preparing filter material with earthworm treatment layer in earthworm biofilter by aerated concrete block Download PDFInfo
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- CN103663864B CN103663864B CN201310612618.9A CN201310612618A CN103663864B CN 103663864 B CN103663864 B CN 103663864B CN 201310612618 A CN201310612618 A CN 201310612618A CN 103663864 B CN103663864 B CN 103663864B
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Abstract
The invention provides a method for preparing a filter material with an earthworm treatment layer in an earthworm biofilter by an aerated concrete block. 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 a volcanic rock block, and has the effects of guiding waste water and removing part of contaminants; the middle layer comprises small quartz sand and the aerated concrete block, 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 an inorganic filter material, wherein the organic filter material is wood flour and peat moss, and the inorganic filter material is the aerated concrete block. The wood flour, the peat moss and the aerated concrete block are uniformly mixed in the volume ratio of 1:2:1, and the filter material is laid on the surface of the middle layer at the height of 30-40 cm, 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 a kind of method that air parcel brick makes Worm biological filter tank filtrate.
Background technology
Worm biological filter tank is a kind of novel sewage disposal technology, can be used for the process of the organic sewages such as sanitary sewage.Its principle is that earthworm and microorganism act synergistically and jointly decompose the organic pollutant in sewage thus sewage is purified, simultaneously for the existence of earthworm and microorganism provides food and energy derive.The introducing of earthworm, improves the processing efficiency of ordinary biofilter, and decreases the blocking that filter tank may occur.But in the operational process of Worm biological filter tank, still easily there is the situation of blocking.Its reason is that Worm biological filter tank is generally divided into earthworm layer, middle layer and supporting layer three layers, the dealing with earthworm layer of the superiors is generally made up of organic filtrate, be suitable for earthworm existence, but this is unfavorable for the penetrating of sewage, thus there is blocking, the phenomenons such as ponding, thus cause earthworm to escape or death, affect steady running and the wastewater treatment efficiency in filter tank.Therefore dealing with earthworm layer is the key factor affecting Worm biological filter tank steady running.The selection of filtrate is extremely important, and a kind of good filtrate both should be conducive to the formation of microbial film, should be conducive to again the existence of earthworm, could improve stability and the processing efficiency in filter tank.
Through the retrieval to prior art, the patent of existing Worm biological filter tank aspect, as Chinese patent ZL200610025883.7, ZL200810201394.1 etc., but the design of these patent more holistic filter tanks or the organic filtrate of main use are as dealing with earthworm layer, full stress-strain filtrate can provide the environment needed for earthworm existence well, but easily block, affect 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 a kind of method that air parcel brick makes Worm biological filter tank filtrate, meet the requirement of earthworm metafiltration material as earthworm and microorganism complex carries, both earthworm existence had been applicable to, also be applicable to microorganism growth, thus make filter tank have higher sewage treating efficiency.
Find after deliberation, the earthworm metafiltration material of Worm biological filter tank is as the living environment of earthworm, and matrix should meet the following conditions: soft amorphous; Be rich in organic matter etc.As microorganism carrier, filtrate should have good performance in the following areas: 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.Therefore the present invention is based on this, provide following method.
The present invention is achieved by the following technical solutions:
The invention provides a kind of method that air parcel brick makes Worm biological filter tank filtrate, whole filtrate is made up of from top to bottom dealing with earthworm layer, middle layer and supporting layer three layers, and described method comprises the steps:
First preparing nethermost supporting layer, is highly 40-50cm.This layer is made up of thick quartz wedge layer and volcano sillar layer, and volcano sillar layer is positioned on thick quartz wedge layer, mainly plays the effect of sewage water conservancy diversion, the microorganism of growth on it, also has the effect removing part pollutent.
Then preparing middle layer, is highly 30-40cm.This layer is made up of little quartz sand layer and air parcel brick layer, and air parcel brick 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 be drained in water outlet simultaneously.
Finally prepare the dealing with earthworm layer of the superiors, 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 air parcel brick, and wood chip, eriophorum peat are native, air parcel brick by volume 1:2:1 mix.Mix rear paving on the intermediate layer, laying is highly 30-40cm.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 such Worm biological filter tank is prepared complete, and passing into sewage can run.
Preferably, in described supporting layer: nethermost thick quartz wedge particle diameter is about 3-4cm, and thick quartz wedge layer height is 20-30cm.On volcano sillar particle diameter be about 1-3cm, volcano sillar layer height is 20-30cm.This two layer heights sum is 40-50cm.The combined strength of two-layer filtrate is comparatively large, can play the supporting role preferably to upper layer, also can remove pollutent preferably simultaneously.
Preferably, in described middle layer: little quartz sand particle size is below about 0.3-0.8cm, little quartz sand layer height 10-20cm.On air parcel brick particle diameter be 18-30mm, wide 10-25mm, thick about 5-15mm, air parcel brick layer height is 10-20cm.This two layer heights sum is 30-40cm.It is fast that little quartz sand has filtration velocity, good filtration effect, stable effluent quality, the feature such as not block, do not lump.The middle layer of these two kinds of filtrate compositions, can play the effect of removing the pollutents such as nitrogen phosphorus preferably.
Preferably, described wood chip is long 3-10mm, wide 4-12mm, the thick small pieces being less than 1mm, and described eriophorum peat soil is less than the soil being rich in organic matter of 1mm for particle diameter.Wood chip and eriophorum peat are all 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.
Preferably, described air parcel brick particle diameter is 18-30mm, wide 10-25mm, thick about 5-15mm, is characterized in that porosity is high, light weight, and because of containing flyash, unslaked lime composition, adsorption and dephosphorization effect is strong, is a kind of excellent wastewater treatment rate material.
Preferably, described input earthworm is the density input earthworm by 1000 grams every cubic metre.
Compared with prior art, the present invention has following beneficial effect:
Dealing with earthworm layer in the present invention is by wood chip, eriophorum peat, the mixing of air parcel brick, and add the inorganic filtrate of air parcel brick, the retentiveness can improving organic filtrate in general Worm biological filter tank is high, and ventilate the earthworm anoxic escaping phenomena caused for hypoxgia; The organic filtrate wherein still used can avoid that earthworm body wall is subject to the physical abrasion of inorganic filtrate in filter tank and the earthworm of causing escapes and dead.Meanwhile, organic filtrate and inorganic filtrate are jointly for the attachment existence of microorganism provides place.Mixing filtrate meets the existence of earthworm and the demand of microbe survival jointly, improves the efficiency of sewage disposal.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
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 and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
Embodiment:
Made a kind of Worm biological filter tank in certain sewage disposal place, preparation method is as follows for its filtrate, as shown in Figure 1.
1. first prepare nethermost supporting layer, spread the thick quartz wedge of particle diameter about 3-4cm in the bottom in filter tank.Be highly 20-30cm, after smooth for thick quartz wedge layer surface dressing, spread the volcano sillar of particle diameter about 1-3cm above, volcano sillar layer height is 20-30cm, then by smooth for volcano sillar layer surface dressing.This two-layer height sum is 40-50cm.This layer mainly plays the effect of sewage water conservancy diversion, and after sewage water distribution for some time, the microorganism of growth on it, also can remove part pollutent.
2. then prepare middle layer.Spread little quartz sand on above-mentioned sillar layer surface, volcano, particle diameter is 0.3-0.8cm, and little quartz sand layer height is 10-20cm, by smooth for little quartz sand layer surface dressing, repave air parcel brick, air parcel brick particle diameter is long 18-30mm, wide 10-25mm, thick 5-15mm, air parcel brick layer height is 10-20cm.This two layer heights sum is 30-40cm.Then by smooth for air parcel brick layer surface dressing.The main filtration of this layer, has stronger pollutant removal effect, the small particle size filtrate on upper strata can be stoped to enter in water outlet simultaneously.
3. last preparation the superiors dealing with earthworm layer, spreads mixing filtrate on the surface of above-mentioned air parcel brick layer.This mixing filtrate adds inorganic filtrate by organic filtrate and is mixed in proportion and forms, organic filtrate is wood chip and eriophorum peat soil, inorganic filtrate is air parcel brick, wood chip is long 3-10mm, wide 4-12mm, the thick small pieces being less than 1mm, air parcel brick particle diameter is long 18-30mm, wide 10-25mm, thick about 5-15mm, the 1:2:1 mixing by volume of wood chip, eriophorum peat soil, air parcel brick.After mixing, filtrate is layered on the surface in above-mentioned middle layer, laying is highly 30-40cm.Then the filtrate of whole Worm biological filter tank completes.
4. after filtrate is filled in, start water distribution, put into earthworm until water outlet outward appearance with during the basic indifference of water inlet, the Eisenia foetida of ruddy, healthy and strong sensitive, the obvious reproduction endless belt of tool of body colour is put in earthworm choosing or An Deai wins earthworm, and throwing in density is 10000 grams every cubic metre earthworm metafiltration material.
Implementation result:
Run earthworm after two weeks to live well in filter tank growth.After filter tank is stable, the treatment effect to dirty water pollutant of this earthworm layer: COD clearance is 26.7-65.5%, average removal rate is 41.4%.Ammonia nitrogen removal frank is 33.9-91.7%.Ammonia nitrogen average removal rate is 60.3%.Tp removal rate is better than the Worm biological filter tank that general material makes, and the initial stage reaches more than 95%.Show that the wastewater treatment efficiency of 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 75%, and ammonia nitrogen removal frank is greater than 72%.Show that composition and the proportioning of this filter are suitable, wastewater treatment efficiency is better.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (6)
1. make a method for Worm biological filter tank filtrate of air parcel brick, it is characterized in that: the filtrate of whole Worm biological filter tank is made up 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 made up of thick quartz wedge layer and volcano sillar layer, volcano sillar layer is positioned on thick quartz wedge layer, play the effect of sewage water conservancy diversion, the microorganism of growth on it, also have the effect removing part pollutent;
Then preparing middle layer, is highly 30-40cm, and this layer is made up of little quartz sand layer and air parcel brick layer, and air parcel brick layer is positioned on little quartz sand layer, and filtration can remove pollutent preferably, stops the small particle size filtrate on upper strata to be drained in water outlet simultaneously;
Finally prepare the dealing with earthworm layer of the superiors, this layer adds inorganic filtrate by organic filtrate and is mixed in proportion and forms, organic filtrate is wood chip and eriophorum peat soil, inorganic filtrate is air parcel brick, and wood chip, eriophorum peat are native, the 1:2:1 mixing by volume of air parcel brick, mix rear paving on the intermediate layer, laying is highly 30-40cm; Throw in earthworm, until earthworm population dynamics is basicly stable in whole matrix, become ripe dealing with earthworm layer.
2. air parcel brick according to claim 1 makes the method for Worm biological filter tank filtrate, it is characterized in that: in described supporting layer: nethermost thick quartz wedge particle diameter is 3-4cm, and thick quartz wedge layer height is 20-30cm; Volcano sillar particle diameter on thick quartz wedge layer is 1-3cm, and volcano sillar layer height is 20-30cm; This two layer heights sum is 40-50cm.
3. air parcel brick according to claim 1 makes the method for Worm biological filter tank filtrate, it is characterized in that: in described middle layer: little quartz sand particle size is below 0.3-0.8cm, little quartz sand layer height 10-20cm; Air parcel brick particle diameter on little quartz sand layer is 18-30mm, wide 10-25mm, thick 5-15mm, and air parcel brick layer height is 10-20cm; This two layer heights sum is 30-40cm.
4. the method making Worm biological filter tank filtrate of air parcel brick according to any one of claim 1-3, is characterized in that: described wood chip is long 3-10mm, wide 4-12mm, the thick small pieces being less than 1mm.
5. the method making Worm biological filter tank filtrate of air parcel brick according to any one of claim 1-3, is characterized in that: described eriophorum peat soil is less than the soil being rich in organic matter of 1mm for particle diameter.
6. the method making Worm biological filter tank filtrate of air parcel brick according to any one of claim 1-3, is characterized in that: described input earthworm is the density input earthworm by 1000 grams every cubic metre.
Priority Applications (1)
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|---|---|---|---|
| CN201310612618.9A CN103663864B (en) | 2013-11-26 | 2013-11-26 | Method for preparing filter material with earthworm treatment layer in earthworm biofilter by aerated concrete block |
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| CN201310612618.9A CN103663864B (en) | 2013-11-26 | 2013-11-26 | Method for preparing filter material with earthworm treatment layer in earthworm biofilter by aerated concrete block |
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| CN103663864A CN103663864A (en) | 2014-03-26 |
| CN103663864B true CN103663864B (en) | 2015-05-20 |
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Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1369441A (en) * | 2001-02-15 | 2002-09-18 | 上海复旦申花净化技术股份有限公司 | System for treating organic sewage with earthworm |
| FI20031597A0 (en) * | 2003-11-04 | 2003-11-04 | Maa Ja Elintarviketalouden Tut | Waste water treatment device and method and use of thermal insulation board |
| CN100441525C (en) * | 2006-04-20 | 2008-12-10 | 上海交通大学 | Method for preparing filtration material for earthworm biofilter |
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