CN209383607U - A kind of biogas slurry nutrition efficient utilizes and environment control unit - Google Patents
A kind of biogas slurry nutrition efficient utilizes and environment control unit Download PDFInfo
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- CN209383607U CN209383607U CN201821880940.4U CN201821880940U CN209383607U CN 209383607 U CN209383607 U CN 209383607U CN 201821880940 U CN201821880940 U CN 201821880940U CN 209383607 U CN209383607 U CN 209383607U
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Abstract
The utility model relates to a kind of utilization of biogas slurry nutrition efficient and environment control units, internal layer cartridge filter including outer filter cylinder and inside outer filter cylinder, the side wall of outer filter cylinder and internal layer cartridge filter is all made of filter screen structure, filling has the filtrate of Nutrient Absorption performance between two layers of filter screen structure, nylon wire is removably set at the top of outer layer cartridge filter, is arranged on nylon wire multiple for placing the plant transplantation cave of water plant.The utility model carries out filtration treatment twice to biogas slurry using outer filter cylinder and filtrate, the nutrient of the biogas slurry of filtrate absorption simultaneously, it is subsequent to be used as slow-release material sustained release nutrient, without carrying out additional dilution or filtration treatment to biogas slurry, filtrate absorption property can be effectively reduced biogas slurry ammonia volatilization to play environmental Kuznets Curves and biogas slurry fertilizer efficiency and promote effect；Dilution irrigation water can be effectively reduced in biogas slurry application simultaneously, soil bearing capacity is reduced, realizes the low cost operation of biogas slurry treatment.
Description
Technical field
The utility model relates to a kind of utilization of biogas slurry nutrition efficient and environment control units, belong to field of environment protection.
Background technique
The biogas slurry that China year generates at present has reached 400,000,000 sides, in biogas slurry containing include a great number of elements such as nitrogen, phosphorus, potassium and calcium,
Nutriment abundant including the middle and trace elements such as copper, iron, zinc, manganese, utility value with higher.But biogas slurry is generating
Utilization is arrived later is primarily present following several respects problem in the process:
1) large and medium-sized methane station is equipped with the facilities such as the liquid storage tank, sedimentation basin, oxidation pond of respective volume, and area is larger, lacks
Few reasonable utilization ways, and a large amount of ammonia can be volatilized during biogas slurry storage, environmental pollution is not only caused, people and animals are caused
Respiratory disease, also will cause natural pond fat effect loss, and the emission reduction effects such as covering methods being often used at present are relatively poor, material
Recycling is difficult, is separated by solid-liquid separation the problems such as difficult.2) biogas slurry due to total nitrogen, total phosphorus, conductivity it is relatively high, in application often
It needs to be diluted, especially vegetables etc. generally require 3~5 times of dilution, need a large amount of irrigation water, and since methane station is attached
Close to lack corresponding consumption soil, the biogas slurry after causing dilution is unable to get whole consumption processing.As environment protection treating dynamics adds
Greatly, methane station can only cause methane station operation difficulty to increase by the treatment measures that the cost is relatively high such as qualified discharge.
Therefore, seek that cost is relatively low, storage process ammonia emission substantially lowers, material recovery is simple, biogas slurry total nitrogen, always
Phosphorus, conductivity can be effectively reduced, biogas slurry storage treatment facility can obtain the synthesis that can rationally recycle using, nutrient
Technology, for solving the problems, such as that the storage of methane station biogas slurry, processing are of great significance.Plant absorption method was supported due to having in recent years
Point recycle, it is easy to operate, processing after water quality preferably etc. advantages be developed rapidly, but due to plant growth nutrient,
Conductivity concentration is far below biogas slurry, so generally requiring to dilute or by filtering precipitating post-processing, increasing processing cost.
Utility model content
It is utilized in view of the above problems, the object of the present invention is to provide a kind of biogas slurry nutrition efficient and environmental Kuznets Curves fills
It sets, guarantees that the device has preferable degradation effect to biogas slurry total nitrogen, total phosphorus, conductivity, have to biogas slurry ammonia volatilization and preferably subtract
Effect is arranged, while there is plant certain recycling to be worth.
To achieve the above object, the utility model uses following technical scheme: a kind of biogas slurry nutrition efficient utilizes and environment
Control device, the internal layer cartridge filter including outer filter cylinder and inside the outer filter cylinder, the outer filter cylinder and
The side wall of internal layer cartridge filter is all made of filter screen structure, and filling has Nutrient Absorption performance between two layers of filter screen structure
Filtrate, nylon wire is removably set at the top of the outer filter cylinder, is arranged on nylon wire multiple for placing water
The plant transplantation cave of plant.
The biogas slurry nutrition efficient utilizes and environment control unit, it is preferred that the outer filter cylinder further includes annular
Bottom plate, the outer edge of the annular bottom plate are fixedly connected with the filter screen structure of the outer filter cylinder；The internal layer cartridge filter
It further include circular bottom plate, the edge of the circular bottom plate is fixedly connected with the filter screen structure of the internal layer cartridge filter.
The biogas slurry nutrition efficient utilizes and environment control unit, it is preferred that for total nitrogen 1500mg/L, total phosphorus
Biogas slurry within 80mg/L, conductivity 12500uS/cm is directly handled using the device.
The biogas slurry nutrition efficient utilizes and environment control unit, it is preferred that the filtrate is that charcoal and vermiculite are pressed
It is mixed according to 1:4 ratio.
The biogas slurry nutrition efficient utilizes and environment control unit, it is preferred that the filter screen knot of the outer filter cylinder
Structure uses 120 mesh filter screens, and the filter screen structure of the internal layer cartridge filter uses 20 mesh filter screens.
The biogas slurry nutrition efficient utilizes and environment control unit, it is preferred that before the charcoal and vermiculite mixing,
2h is impregnated in the hydrochloric acid solution of 0.1mol/L.
The biogas slurry nutrition efficient utilizes and environment control unit, it is preferred that the annular bottom plate inward flange with
Sealing ring is provided between the outer edge of the circular bottom plate.
The biogas slurry nutrition efficient utilizes and environment control unit, it is preferred that in the filter screen structure of internal layer cartridge filter
Inside interval multiple backwash high pressure microvesicles be set be aerated items.
The biogas slurry nutrition efficient utilizes and environment control unit, it is preferred that the water plant selects water hyacinth.
Because the utility model adopts the above technical scheme, it has the following advantages: utility model device utilizes outer layer
Cartridge filter and filtrate carry out filtration treatment twice, while the nutrient of filtrate absorption biogas slurry to biogas slurry, subsequent to hold as slow-release material
Continuous Releasing nutrient, without carrying out additional dilution or filtration treatment to biogas slurry, filtrate absorption property can be effectively reduced natural pond
Liquefied ammonia volatilization promotes effect to play environmental Kuznets Curves and biogas slurry fertilizer efficiency.Therefore, utility model device is used directly for natural pond
The low cost operation of biogas slurry treatment is realized in the recycling of liquid nutrient.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the structure schematic diagram of the utility model outer filter cylinder；
Fig. 3 is the structural schematic diagram of the utility model internal layer cartridge filter；
Fig. 4 is the structural schematic diagram of the utility model nylon wire and water plant；
Fig. 5 is each physical and chemical mutagenesis situation of the various concentration biogas slurry after utility model device filtration treatment,
In, figure (a) is total nitrogen filter effect, and figure (b) is total phosphorus filter effect, schemes (c) filtered conductivity effect；
Fig. 6 is each index situation of change after being absorbed using utility model device to biogas slurry in biogas slurry reservoir,
In, scheme the situation of change of (a) total nitrogen, figure (b) is the situation of change of total phosphorus, and figure (c) is the situation of change of conductivity；
Fig. 7 is using utility model device to biogas slurry ammonia volatilization emission reduction effect figure.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and examples.
As shown in Figs 1-4, the utility model proposes a kind of utilization of biogas slurry nutrition efficient and environment control unit, the devices
The side wall of internal layer cartridge filter 2 including outer filter cylinder 1 and inside outer filter cylinder 1, outer filter cylinder 1 uses filter screen
Structure 11, the side wall of internal layer cartridge filter 2 also use filter screen structure 21.Filling between two layers of filter screen structure 11,21 has
Nylon wire 4 is removably arranged at the top of outer layer cartridge filter 1 in the filtrate 3 of Nutrient Absorption performance, is arranged on nylon wire 4 more
A plant transplantation cave 41 for being used to place water plant 6.Biogas slurry nutrition efficient described in the utility model utilizes and environmental Kuznets Curves
Device, filter screen structure 11 is for filtering large granular impurity in biogas slurry, and filter screen structure 21 is for being isolated filtrate 3 and being convenient for
The root root of water plant 6 can extend to filtrate.Filtrate 3 is used to carry out secondary filter to biogas slurry, while adsorbing in biogas slurry
Nutrient, playing the role of slow-release material later constantly is that water plant 6 provides crop nutrition content.Nylon wire 4 covers entire aquatic
The vitellarium of plant 6 entirely removes nylon wire 4 convenient for the subsequent recycling to plant, can recycle whole plants.
Preferably, outer filter cylinder 1 further includes annular bottom plate 12, outer edge and the outer filter cylinder 1 of annular bottom plate 12
Filter screen structure 11 is fixedly connected；Internal layer cartridge filter 2 further includes circular bottom plate 22, the edge and internal layer cartridge filter of circular bottom plate 22
2 filter screen structure 12 is fixedly connected.It is provided between the inward flange of annular bottom plate 12 and the outer edge of circular bottom plate 22 close
Seal 5, for preventing filtered biogas slurry from penetrating into the inside of internal layer cartridge filter 2.
Preferably, filtrate 3 is that charcoal and vermiculite are mixed according to 1:4 ratio, the partial size surplus 40-60 of two kinds of materials
Mesh, vermiculite play the role of absorption and increase installation weight maintenance absorption liquid level, and charcoal is mainly used for Nutrient absorption.Above-mentioned filter
Material especially has good absorption property to ammonia, to reduce stink and the gaseous contamination in biogas slurry pond.Charcoal and vermiculite are mixed
Before conjunction, 2h can be impregnated in the hydrochloric acid solution of 0.1mol/L, absorption property can be further increased.
Preferably, multiple backwash high pressure microvesicles are arranged at the inside interval of the filter screen structure 11 of internal layer cartridge filter 1 to expose
Gas bar 23, cleaning, anti-clogging for two layers of filter structure 11,21, when 3 adsorbent excessive concentration of filtrate, are excluded, and are increased
Strong adsorption effect again.Backwash high pressure microvesicle aeration item 23 specifically can be set four, and aeration pressure is 0.25kpa, single quick-fried
Gas bar aeration quantity is 1L/min, and treatment process recommends aeration time such as following table (TN:1000-2000mg/L, EC 5000-
15000uS/cm):
| Handle time/d | Aeration time/h |
| 0-5 | 0.5 |
| 5-10 | 1 |
| 10-10 | 2 |
| 20-30 | 4 |
Preferably, water plant 6 selects water hyacinth, and Eichhornia crassipes growth is quick, good suitable to having for high-concentration sewage
Ying Xing, and cellulose rich in and crude protein, can be used as high-quality animal feed, and furthermore water hyacinth is also suitable for anaerobism hair
Ferment and aerobic compost.Importantly, water hyacinth has good absorption in growth course, for nitrogen, phosphorus, the COD in biogas slurry
Effect.
The biogas slurry nutrition efficient that the utility model is proposed utilizes and environment control unit, application method are as follows: by water
In the seedling replanting of plant 6 to the plant transplantation cave 41 of plant absorption device, then by multiple natural ponds for having planted water plant 6
Liquid nutrition efficient utilizes and environment control unit is immersed in biogas slurry pond, biogas slurry nutrition efficient utilize and environment control unit it is outer
Layer cartridge filter 1 filters out the large granular impurity in biogas slurry, supporting in absorption biogas slurry while filtrate 3 carries out secondary filter to biogas slurry
Point, the filtrate 3 for adsorbing nutrient plays the role of slow-release material and constantly provides crop nutrition content for water plant.
Preferably, multiple aerators are arranged in bottom in biogas slurry pond, use in incubation to water plant 6
The mode being aerated for 24 hours.
The utility model has also carried out the test of verification technique effect:
Learn water hyacinth in total nitrogen < 300mg/L, total phosphorus < 40mg/L, conductivity < 3000uS/ by consulting pertinent literature
Cm can express preferable growth, so the upper limit of the above numerical value as plant growth area biogas slurry after filtering, in order to probe into this dress
The filtering water effect that various concentration biogas slurry is used for a long time is set, different gradient total nitrogens, total phosphorus, the examination of filtered conductivity effect are carried out
It tests.Test is provided that studied biogas slurry is chicken manure biogas slurry, and test setting 30 days was surveyed in sampling in the 0th, 2,5,10,20,30 day
Total nitrogen, total phosphorus, conductivity value are tried, and observes crop growth conditions, is stirred evenly before sampling, sample time is 2h after aeration, just
Beginning physical and chemical index is as shown in the table:
Wherein device is immersed in biogas slurry pond, keeps liquid level and device top 2-3cm distance, backwash high pressure microvesicle aeration
The daily aeration time of item is 4h, and bottom of pond is equally equipped with aeration item, whole day aeration.
As seen from Figure 5, biogas slurry total nitrogen, total phosphorus, conductivity are with the processing time after filtering during processing
Extend and the trend that is gradually increasing be presented, after the test three groups of test total nitrogen concentrations respectively reached 1550.00mg/L,
289.75mg/L, 198.00mg/L, total phosphorus concentration respectively reached 87.60mg/L, 35.20mg/L, 10.50mg/L conductivity point
12350uS/cm, 2870uS/cm, 1740uS/cm are not reached.Undiluted biogas slurry index of correlation is more than the upper of this test determination
Limit value, and water hyacinth is finally to survive, and dilutes 2 times and 4 times of processing group indexs of correlation are less than the upper limit of this test determination
Value, and water hyacinth growing way is preferable.But 2 times of processing indexs of correlation are diluted close to the upper limit, so device processing biogas slurry correlation refers to
Put on limit about are as follows: total nitrogen 1500mg/L；Total phosphorus 80mg/L；Conductivity 12500uS/cm, but within this range after device filtering
Biogas slurry can satisfy the demand of water hyacinth long term growth.
After therefore deducing that the demand that the filtered biogas slurry of the device can satisfy water hyacinth long term growth, carry out the dress
Set under long-term storage condition the present apparatus to nitrogen in biogas slurry, phosphorus, conductivity reduces and ammonia emission reduction effect research.
We can bear index of correlation maximum with device as research, that is, the biogas slurry of 2 times of dilution be selected, so initially
Physical and chemical index is same as above table 1, and planting density, the aeration time of selection are as described above, consider biogas slurry auto-degradation, so two groups of setting
Experiment, and using device processing and natural storing state, adsorbent material and water hyacinth were recycled in every 30 days during the test
It updates, grows three batches in total, add up to 90 days.It tests liquid reserve tank and selects long 2m, wide 1m, deeply 0.8 meter, wherein liquid storage depth 0.5m,
Total 1m3, select the processing module of 2*3.On-test and at the end of sampling analysis total nitrogen, total phosphorus, conductivity, use simultaneously
Ammonia monitor is monitored two groups of test ammonia volatilizations, and sampling is primary daily, and sequential sampling 90 days.
Equally device is immersed in biogas slurry pond, keeps liquid level and device top 2-3cm distance, backwash high pressure microvesicle exposes
The daily aeration time of gas bar is 4h, and bottom of pond is equally equipped with aeration item, whole day aeration, and test result is shown in Fig. 6.
As seen from Figure 6, it compares and device handles total nitrogen, the total phosphorus, conductivity that can reduce in biogas slurry, but pass through
Device handle the biogas slurry range of decrease it is obvious, after the test total nitrogen, total phosphorus, conductivity concentration be respectively 598.2mg/L, 40.4mg/L,
4250uS/cm, compares initial concentration, has dropped 60.71%, 51.03%, 65.86% respectively；Control treatment is compared, is degraded
Improved efficiency 105.32%, 426.25%, 209.43%.As it can be seen that can be reached using the device to medium concentration biogas slurry on the upper side
The preferable degradation effect of total nitrogen, total phosphorus, conductivity.
The long-term storage condition device is to ammonia volatilization emission reduction effect in biogas slurry as shown in fig. 7,90 days Storage period internal reference groups
It is respectively 575.6mg, 78.5mg with device processing group ammonia volatilization amount, it is seen that biogas slurry ammonia volatilization is effectively reduced in the device use
86.36%, there is preferable gaseous environment control effect.
The utility model is only illustrated with above-described embodiment, and structure, setting position and its connection of each component are all can
It is all that individual part is carried out according to the utility model principle on the basis of technical solutions of the utility model with what is be varied
Improvement and equivalents, should not exclude except the protection scope of the utility model.
Claims (7)
1. a kind of biogas slurry nutrition efficient utilizes and environment control unit, which is characterized in that including outer filter cylinder and be located at described
The side wall of internal layer cartridge filter inside outer filter cylinder, the outer filter cylinder and internal layer cartridge filter is all made of filter screen structure,
Filling has the filtrate of Nutrient Absorption performance between two layers of filter screen structure, removable at the top of the outer filter cylinder
Setting nylon wire in dress ground is arranged multiple for placing the plant transplantation cave of water plant on nylon wire.
2. a kind of biogas slurry nutrition efficient as described in claim 1 utilizes and environment control unit, which is characterized in that the outer layer
Cartridge filter further includes annular bottom plate, and the filter screen structure of the outer edge of the annular bottom plate and the outer filter cylinder is fixed to be connected
It connects；The internal layer cartridge filter further includes circular bottom plate, the filter screen knot at the edge of the circular bottom plate and the internal layer cartridge filter
Structure is fixedly connected.
3. a kind of biogas slurry nutrition efficient as described in claim 1 utilizes and environment control unit, which is characterized in that for total nitrogen
Biogas slurry within 1500mg/L, total phosphorus 80mg/L, conductivity 12500uS/cm is directly handled using the device.
4. a kind of biogas slurry nutrition efficient as described in claim 1 utilizes and environment control unit, which is characterized in that the outer layer
The filter screen structure of cartridge filter uses 120 mesh filter screens, and the filter screen structure of the internal layer cartridge filter uses 20 mesh filter screens.
5. a kind of biogas slurry nutrition efficient as claimed in claim 2 utilizes and environment control unit, which is characterized in that in the ring
Sealing ring is provided between the inward flange of shape bottom plate and the outer edge of the circular bottom plate.
6. a kind of biogas slurry nutrition efficient according to any one of claims 1-4 utilizes and environment control unit, which is characterized in that
Multiple backwash high pressure microvesicles are set at the inside interval of the filter screen structure of internal layer cartridge filter and are aerated item.
7. a kind of biogas slurry nutrition efficient according to any one of claims 1-4 utilizes and environment control unit, which is characterized in that
The water plant selects water hyacinth.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109293167A (en) * | 2018-11-15 | 2019-02-01 | 北京市农林科学院 | A kind of biogas slurry nutrition efficient utilizes and environment control unit and application method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109293167A (en) * | 2018-11-15 | 2019-02-01 | 北京市农林科学院 | A kind of biogas slurry nutrition efficient utilizes and environment control unit and application method |
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