CN109626585A - A kind of technology of lakeside zone intensified denitrification and dephosphorization - Google Patents
A kind of technology of lakeside zone intensified denitrification and dephosphorization Download PDFInfo
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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
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
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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
- C02F2101/00—Nature of the contaminant
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Abstract
Improve lakeside carrying substrates by charcoal and dry reed stalk the present invention relates to a kind of with the technology of intensified denitrification and dephosphorization, wherein charcoal: dry reed stalk: the dry mass percentage of lakeside carrying substrates is 1-5:0.5-2:93-98.5.It is mixed together in the carrying substrates of lakeside by the way that dry reed stalk Pintsch process to be prepared into after charcoal with dry reed stalk, and plants vascular bundle class water plant on mixed-matrix, the efficient removal of lakeside zone nitrogen phosphorus is realized by the synergistic effect of three.It is cheap and easy to get that raw material of the present invention do reed stalk, and the technical operation is simple and easy, has cost of investment low, low power consumption and other advantages.
Description
Technical field
The present invention relates to water ecological environments to repair field, and in particular, to improves lakeside by charcoal and reed straw
Carrying substrates are with the technology of intensified denitrification and dephosphorization.
Background technique
Lakeside zone is the intermediate zone between lake river terriecosystems and aquatic ecosystem, has and intercepts, is detained, is heavy
Product, absorption, the function of settling pollutant.Under the action of extraneous factor, xenobiotic pollutants only just be can enter by lakeside zone
The water bodys such as river, lake, lakeside zone can intercept a large amount of land-sourced pollutants, and filter rainwash pollutant, to mitigate
Purification into water body is born.But the nitrogen and phosphorus load intercept, being trapped in lakeside zone is higher, often beyond its self purification energy
Power.Therefore, for this status of lakeside zone, the measure of intensified denitrification and dephosphorization is taken to be particularly important.Currently, enhancements master
It to include establishing Vegetative Filter Strips and two kinds of human intervention.Vegetative Filter Strips are to utilize absorption and enrichment of the plant growth to nitrogen phosphorus
It acts on to strengthen the removal of nitrogen phosphorus, but this method takes a long time, plant is also required to regularly gather in；Human intervention is with mechanical removal bottom
Mud, regular feeding lime carry out denitrogenation and relatively conventional, these measures using means of the chemical deposition method removal containing phosphor contaminant
Although significant effect, original ecosystem can be destroyed, the effect of short-term denitrogenation dephosphorizing can only be played.
Charcoal is one kind using biological organic matter as raw material, and a kind of phosphorus content of generation is cracked under conditions of high temperature
High black solid product.Charcoal is widely used in the every field of environment as a kind of environment-friendly materials, especially changes in soil
Good and reparation aspect.Charcoal can effectively adsorb the heavy metal in soil, and will not cause to damage to the microorganism in soil,
It adds the physicochemical property that can also be effectively improved soil in the soil, is conducive to the circulation of soil nutrient and the disturbance of biology,
Studies show that, the soil of addition charcoal, tend to balance after pH raising state, soil redox potential decline for a long time,
It is more advantageous to removal of the Soil Microorganism to pollutant.
Reed is a kind of plant containing higher fiber cellulose content, is the common water plant of lakeside zone.Currently, to reed
The direct utilization of stalk, most still embodies the localization organic substrate for agriculturally utilizing reed roots substitution turf
Long-term cropping produces good effect.Microbial manure is applied by matching on the basis of straw-returning, in a short time to soil
The influence of microbiologic population and soil physico-chemical property is significant, is more advantageous to the growth of crop.
Therefore, it is raw material that the present invention, which selects dry reed stalk, prepares charcoal by the method for Pintsch process, and will be biological
Charcoal, dry reed stalk are mixed in proportion with lakeside carrying substrates, provide a kind of technology for strengthening lakeside zone denitrogenation dephosphorizing.This hair
Bright technology has the characteristics that environment friendly, will not generate secondary pollution, low in cost, easy to operate.
Summary of the invention
In view of the deficienciess of the prior art, it is an object of the invention to provide one kind by conditioning lakeside carrying substrates to strengthen lake
Technology of the shore with denitrogenation dephosphorizing.
The present invention is prepared into charcoal using dry reed stalk as raw material, and lakeside carrying substrates are applied to together with dry reed stalk
In, to improve the ability of lakeside zone denitrogenation dephosphorizing, wherein the charcoal after being dried for 24 hours at 80-85 DEG C: dry reed stalk: lake
The mass percent of shore carrying substrates is 1-5:0.5-2:93-98.5, is suitable for total nitrogen concentration≤15mg/L and total orthophosphates is dense
Degree≤0.80mg/L purification of water quality.
The present invention is implemented by following steps:
(1) preparation of charcoal: reed stalk is cleaned, and reed powder is ground into after drying, is prepared into charcoal, spare；
(2) it does the preparation of reed stalk section: dry reed stalk being cleaned, segment is cut into after drying, it is spare；
(3) conditioning of lakeside carrying substrates: charcoal, dry reed stalk are mixed with lakeside carrying substrates；
(4) plantation of water plant: by water plant planting in the matrix that lakeside zone mixes after conditioning.
Further, the smashed powder diameter of reed stalk described in above-mentioned steps (1) is 0.05-0.80mm.
Further, reed powder described in above-mentioned steps (1) prepares the condition of charcoal are as follows: in 350-550 DEG C, program
Heating rate be 5-10 DEG C/min nitrogen protection under, Pintsch process 1-3h is cooled to room temperature, with distilled water rinse 2-3 times with
After removing surface impurity, drying obtains charcoal.
Further, reed stalk described in above-mentioned steps (2) is cut into segment, length 3-15cm.
Further, drying temperature described in above-mentioned steps is 80-85 DEG C, and the time is for 24 hours.
Further, hybrid mode described in above-mentioned steps (3) are as follows: at lakeside zone dry season or lower water-break water level,
Expose lakeside carrying substrates, weighs corresponding charcoal and dry reed stalk in the ratio of charcoal, dry reed stalk and lakeside carrying substrates
Quality, directly carry out mixing addition on the carrying substrates of lakeside, conditioning stromal thickness is the 10-50cm on lakeside carrying substrates surface layer.
Further, water plant described in above-mentioned steps (4) is reed, calamus, the stem or leaf of cattail, Chinese celery, the 1-2 in water spinach
Kind.
Further, the depth of water after above-mentioned steps (3) the lakeside zone planting aquatic plants is 0.1-1m.
Further, the planting patterns that above-mentioned steps (4) described water plant is taken is rhizome form, independent planting density
For 15-20 plants/m of reed2, 10-15 plants/m of calamus2, 15-20 plants/m of the stem or leaf of cattail2, 20-25 plants/m of Chinese celery2, 20-25 plants/m of water spinach2；2
Kind plant society planting density is 10-25 plants/m2。
Reed, calamus, the stem or leaf of cattail, Chinese celery and water spinach are vascular bundle class water plant, wherein reed (Phragmites
Australis) be aquatic or humidogene tall grass for many years, be grown in pond, riverbank, small stream side shallow water area more, have it is horizontal walk
Rhizomes, bred in natural habitat with rhizomes based on, rhizomes forms netted in a crisscross manner, or even is formed on the water surface
Thicker rhizomes layer, have extremely strong vitality, adapt to environment it is wide, the speed of growth is fast, be purify water first choice of, be pioneer
Environment protecting plant；Calamus (Acorus calamus) is renascent herb, and rhizomes is sturdy, is grown in marshland, small stream side or water more
Tian Bian, also normal someone's cultivation on the chinampa in lake, rhizome it is horizontal walk, there is hairy fibrous root, vitality is indomitable；The stem or leaf of cattail (Typha
Angustifolia) belong to the aquatic or raw many years herbaceous plant in natural pond, plant is tall and big, and the aerial stem of plant is upright, and sturdy, blade is longer, distribution
It is relatively wide, it is grown on lake, river, pond shoal, for the depth of water up to 1 meter or deeper, marsh, irrigation canals and ditches are also common, can be used for beautifying water
Face and wetland；Chinese celery (Oenanthe javanica) is that aquatic persistent root herbs, all Glabrous have and crawl for many years
Stem, stem cylindrical body are 1m, hollow, 5, top, often stretch out the water surface, and the every section in lower part expands, plant height 70-80cm, have good
Good water-retaining property；Water spinach (Ipomoea aquatica Forsk) is annual herb plant, overgrows or floats on water, stem cylinder
Shape has section, and internode is hollow, takes root on section, hairless.
The technology of lakeside zone intensified denitrification and dephosphorization of the present invention, its prosperity of the water plant planted on lakeside zone
Root system enhances the stability of lakeside carrying substrates, and secrete growth, breeding and the degradation of contaminant that oxygen effect is microorganism of root system mention
For necessary oxygen environment, the oxygen of secreting of root system is of great significance to the pH and redox environment that change root zone microenvironment.Simultaneously
Criss-cross root system forms intensive filter layer, has the function of intercepting, is enriched with pollutant.Also, in the mistake of plant growth
Cheng Zhonghui generates secretion, these secretion contain some special functional groups, have very strong adsorption capacity to suspended matter, to make
Suspended material in water can rapid subsidence get off, the secretion of root system has certain promotion, energy to the activity of rhizosphere biology
Enhance decomposition and conversion of the rhizosphere biology to pollutant.The emergent aquactic plant of plantation can inhibit settling flux to act on, and maintain and reinforce
The stabilization of waterpower transmission and system in system, also has certain landscape effect.
In the technology of lakeside zone intensified denitrification and dephosphorization of the present invention, charcoal is used in the carrying substrates of lakeside, energy
It is enough effectively improved the physicochemical property of matrix, improves the conversion rate of the nitrogen of its own；Due to charcoal specific surface with higher
Long-pending and higher porosity, improves the oxygen transmission rate of lakeside carrying substrates, also provides good living environment for microorganism, higher
Phosphorus content provide necessary carbon source for the denitrification of microorganism；Also, being added with for charcoal is conducive to root system of plant shape
At aerating tissue, increases root hole porosity, promote the growth of plant, significantly improve Radial Oxygen Loss from Root amount, change rhizosphere oxygen level, pH
With root microcell redox environment, the generation of secretions from plant roots and the activity of rhizosphere biology are promoted, to improve
Degradation to pollutant.The addition of charcoal, the resistance accumulation and stress for alleviating the generation of plant internal cause oxygen content deficiency are made
With, increase the biomass of plant, improve its photosynthetic metabolite effect and matrix withhold nitrogen ability, promote plant to nitrogen
Absorption and utilization.
In the technology of lakeside zone intensified denitrification and dephosphorization of the present invention, reed is a kind of containing higher fiber cellulose content
Plant, stalk have more flourishing mechanical tissue and hollow vascular structure, and its Structural assignments uniform close, dimension
More hole structures on wall are restrained, tube bank and hole configurations increase the specific surface area of reed stalk.It is used in lakeside tape base
In matter, the moisture content of matrix can be adjusted using its special structure, flourishing mechanical tissue has very strong Phosphate Sorption
Function.Under the action of water flow and microorganism, the carbon source in reed stalk is released persistently in the course of time, and can be improved lakeside carrying substrates
The quantity and activity of middle microorganism, enhance decomposition of the microorganism to nitrogen and phosphorus pollution object.Meanwhile the addition of reed stalk can also be effective
The mineralising amount and mineralization rate of organic nitrogen in matrix are improved, increases the content of organic matter and enzymatic activity, improves the physicochemical property of matrix.
Charcoal and dry reed stalk are used in the carrying substrates of lakeside, can be played and be adjusted substrate water content and physicochemical property
Effect.The addition of charcoal has good facilitation to the growth for the plant planted on the carrying substrates of lakeside, enhances root system
Oxygen effect is secreted, preferably provides necessary oxygen environment for the growth of microorganism, breeding and degradation of contaminant.It is intercepted in root system of plant
After a large amount of lakeside zone pollutant, a part is adsorbed and is enriched with by plant, and a part is attached on charcoal and root system of plant
Institute of Micro-biology's degradation, in denitrification process, charcoal provides more carbon sources, promote microorganism to the degradation of nitrogen with go
It removes.The addition of dry reed stalk, enhances the enzymatic activity in matrix, accelerates the mineralization rate of organic nitrogen.Its flourishing machinery simultaneously
A large amount of Phosphate Sorptions are organized, for the cellulose of high level under the action of water flow and microorganism, a large amount of carbon source is by lasting release
Out, carbon source equally can be provided for denitrification, the energy generated in the process is utilized by the phosphorus bacterium that bites in matrix, reached
To preferably to the suction-operated of phosphorus.
The present invention has the advantages that
1) conspiracy relation between charcoal, dry reed stalk and plant is organically combined, can both plays reinforcing
The effect of denitrogenation dephosphorizing does not destroy original ecosystem, moreover it is possible to prevent release of the pollutants in sediments to overlying water；
2) for charcoal without being modified, preparation is simple, damage will not be generated to the growth of plant, without considering the time of load
It falls off the influence caused by environment with load substance, there is no to secondary environmental pollution；
3) technical operation is simple, low in cost, can lasting, stable, efficiently remove the nitrogen and phosphorus pollutants in water body,
Good habitat also is provided for lakeside zone simultaneously；
4) reed stalk that the present invention uses, the material source is extensive, and cheap and easy to get；
5) plant planted on lakeside zone not only acts as the clean-up effect to water quality, also has landscape effect.
Figure of description
In order to illustrate more clearly of technical solution in the prior art, the prior art is made with reference to the accompanying drawing further detailed
Thin explanation.
Fig. 1 is the technology implementation diagram of lakeside zone intensified denitrification and dephosphorization of the present invention.
Specific embodiment
Below with reference to embodiment, the invention will be further described, and technical solution in the embodiment of the present invention carries out clear
Chu is fully described by, it is clear that and described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments,
The scope of protection of the present invention is not limited thereto.
Test background introduction: experimental rig is the cylindrical body water tank of diameter 1m, high 1.2m, fills certain lakeside carrying substrates
45cm, water depth simulation 0.3m, experimental rig are drained and are fetched water from perforation pvc pipe from water inlet water inlet tube.
Embodiment 1: charcoal: dry reed stalk: lakeside carrying substrates dry mass ratio is 3:1:96, plants 15 plants/m of reed2。
Reed stalk is cleaned, is dried for 24 hours at being 80 DEG C in temperature, is then ground into reed powder, obtaining partial size is
The reed powder of 0.2-0.5mm, it is cold after Pintsch process 1h under 500 DEG C, the nitrogen protection that programmed rate is 5 DEG C/min
But to room temperature, after rinsing 2-3 times with distilled water to remove surface impurity, for 24 hours in 80 DEG C of drying, charcoal is obtained；By reed stalk
It cleans, is dried at 80 DEG C for 24 hours, be cut into 5cm segment；With the dry mass percentage charcoal after being dried for 24 hours at 80 DEG C: dry reed
Reed stalk: lakeside carrying substrates are 3:1:96, weigh the quality of corresponding charcoal and dry reed stalk, directly carrying substrates are enterprising in lakeside
Row addition mixing, conditioning stromal thickness are the 20cm of lakeside carrying substrates；Then reed is planted in the form of rhizome on mixed-matrix
15 plants/m2。
Under the conditions of total nitrogen concentration of intaking is 10.03mg/L, total phosphorus concentration 0.58mg/L, hydraulic detention time are for 24 hours,
After device stable operation 3 months, it is discharged that total average nitrogen concentration is 2.25mg/L, total phosphorus mean concentration is 0.053mg/L, total nitrogen
Average removal rate reaches 77.5%, total phosphorus average removal rate and reaches 90.9%.
Embodiment 2: charcoal: dry reed stalk: lakeside carrying substrates dry mass ratio is 4:1:95, plants cattail and the stem or leaf of cattail, is mixed
Close 18 plants/m of planting density2。
Reed stalk is cleaned, is dried for 24 hours at being 80 DEG C in temperature, is then ground into reed powder, obtaining partial size is
The reed powder of 0.4-0.6mm, under 500 DEG C, the nitrogen protection that programmed rate is 10 DEG C/min, Pintsch process 1.5h
Afterwards, it is cooled to room temperature, after rinsing 2-3 times with distilled water to remove surface impurity, for 24 hours in 83 DEG C of drying, obtains charcoal；By reed
Reed stalk is cleaned, and is dried for 24 hours at 85 DEG C, is cut into 10cm segment；It is biological with the dry mass percentage after being dried for 24 hours at 85 DEG C
Charcoal: dry reed stalk: lakeside carrying substrates are the quality that 4:1:95 weighs corresponding charcoal and dry reed stalk, directly in lakeside tape base
Mixing is added in matter, conditioning stromal thickness is the 30cm of lakeside carrying substrates；Then on mixed-matrix in the form of rhizome kind
Cattail and the stem or leaf of cattail are planted, mixed planting density is 18 plants/m2。
Under the conditions of total nitrogen concentration of intaking is 6.53mg/L, total phosphorus concentration 0.50mg/L, hydraulic detention time are for 24 hours,
After device stable operation 3 months, it is discharged that total average nitrogen concentration is 2.01mg/L, total phosphorus mean concentration is 0.053mg/L, total nitrogen
Average removal rate reaches 68.9%, total phosphorus average removal rate and reaches 90.0%.
Embodiment 3: charcoal: dry reed stalk: lakeside carrying substrates dry mass ratio is 5:2:93, plants calamus and reed, is mixed
Close 15 plants/m of planting density2。
Reed stalk is cleaned, is dried for 24 hours at being 80 DEG C in temperature, is then ground into reed powder, obtaining partial size is
The reed powder of 0.3-0.7mm, under 450 DEG C, the nitrogen protection that programmed rate is 10 DEG C/min, Pintsch process 1.5h
Afterwards, it is cooled to room temperature, after rinsing 2-3 times with distilled water to remove surface impurity, for 24 hours in 82 DEG C of drying, obtains charcoal.By reed
Reed stalk is cleaned, and is dried for 24 hours at 84 DEG C, is cut into 8cm segment.With the dry mass percentage charcoal after being dried for 24 hours at 83 DEG C:
Dry reed stalk: lakeside carrying substrates are the quality that 5:2:93 weighs corresponding charcoal and dry reed stalk, directly in lakeside carrying substrates
On be added mixing, conditioning stromal thickness is the 30cm of lakeside carrying substrates.Then it is planted in the form of rhizome on mixed-matrix
Calamus and reed, mixed planting density are 20 plants/m2。
Under the conditions of total nitrogen concentration of intaking is 3.78mg/L, total phosphorus concentration 0.21mg/L, hydraulic detention time are for 24 hours,
After device stable operation 3 months, it is discharged that total average nitrogen concentration is 0.54mg/L, total phosphorus mean concentration is 0.02mg/L, total nitrogen
Average removal rate reaches 85.7%, total phosphorus average removal rate and reaches 90.4%.
Comparative example
By in above embodiments mixed-matrix Nitrogen/Phosphorus Removal be not added with the mixed-matrix of charcoal, be not added with it is dry
The mixed-matrix of reed stalk, non-planting plants mixed-matrix, be not added with conditioning matrix and non-planting plants denitrogenation dephosphorizing effect
Fruit is compared.The implementation steps for being wherein not added with the mixed-matrix of charcoal are as follows: reed stalk being cleaned, is dried at 85 DEG C
For 24 hours, it is cut into 8cm segment；With the dry mass percentage charcoal after drying for 24 hours at 83 DEG C: dry reed stalk: lakeside carrying substrates are
0:2:98 weighs the quality of corresponding dry reed stalk, and addition mixing is directly carried out on the carrying substrates of lakeside, and conditioning stromal thickness is
The 30cm of lakeside carrying substrates；Then calamus and reed are planted in the form of rhizome on mixed-matrix, mixed planting density is 20 plants/
m2。
The implementation steps for being wherein not added with the mixed-matrix of dry reed stalk are as follows: reed stalk being cleaned, is 80 DEG C in temperature
Lower drying for 24 hours, is then ground into reed powder, the reed powder that partial size is 0.6-0.8mm is obtained, in 450 DEG C, program liter
Warm rate is after Pintsch process 1.5h, to be cooled to room temperature under the nitrogen protection of 10 DEG C/min, rinses 2-3 times with distilled water to go
After surface impurity, for 24 hours in 85 DEG C of drying, charcoal is obtained；It is biological with the dry mass percentage after being dried for 24 hours at 85 DEG C
Charcoal: dry reed stalk: lakeside carrying substrates are that 4:0:96 weighs corresponding charcoal quality, are directly added on the carrying substrates of lakeside
Mixing, conditioning stromal thickness are the 30cm of lakeside carrying substrates；Then calamus and the stem or leaf of cattail are planted in the form of rhizome on mixed-matrix,
Mixed planting density is 16 plants/m2。
Wherein the implementation steps of the mixed-matrix of non-planting aquatic plants are as follows: reed stalk being cleaned, is 80 DEG C in temperature
Lower drying for 24 hours, is then ground into reed powder, the reed powder that partial size is 0.2-0.5mm is obtained, in 450 DEG C, program liter
Warm rate is after Pintsch process 1.5h, to be cooled to room temperature under the nitrogen protection of 10 DEG C/min, rinses 2-3 times with distilled water to go
After surface impurity, for 24 hours in 85 DEG C of drying, charcoal is obtained.Reed stalk is cleaned, is dried at 85 DEG C for 24 hours, it is small to be cut into 8cm
Section；With the dry mass percentage charcoal after drying for 24 hours at 85 DEG C: dry reed stalk: lakeside carrying substrates are that 5:2:93 weighs phase
The quality of the charcoal and dry reed stalk answered, directly carries out addition mixing on the carrying substrates of lakeside, and conditioning stromal thickness is lakeside
The 30cm of carrying substrates.
The implementation steps for being wherein not added with conditioning matrix and non-planting plants are as follows: with dry after drying for 24 hours at 85 DEG C
Mass percent charcoal: dry reed stalk: lakeside carrying substrates are the matter that 0:0:100 weighs corresponding charcoal and dry reed stalk
Amount, the density of planting plants are 0 plant/m2.It has been described in three embodiments of the implementation process of other mixed-matrixes in front, this
In just repeat no more.
5 kinds of mixed-matrixes respectively water inlet total nitrogen concentration be 10.03mg/L, total phosphorus concentration 0.58mg/L, hydraulic retention
Time be for 24 hours under the conditions of, the concentration for being discharged total nitrogen and total phosphorus after stable operation 3 months and the comparison result in terms for the treatment of effect
1 can be shown in Table:
The effect of 1 different type matrix treatments Nitrogen-and Phosphorus-containing sewage of table compares
Claims (9)
1. a kind of technology of lakeside zone intensified denitrification and dephosphorization, it is characterised in that the lakeside zone matrix biopolymers charcoal after conditioning: dry reed
Stalk: the dry mass ratio of lakeside carrying substrates is 1-5:0.5-2:93-98.5, and is implemented by following steps:
(1) preparation of charcoal: reed stalk is cleaned, and reed powder is ground into after drying, is prepared into charcoal, spare；
(2) it does the preparation of reed stalk section: dry reed stalk being cleaned, segment is cut into after drying, it is spare；
(3) conditioning of lakeside carrying substrates: charcoal, dry reed stalk are mixed with lakeside carrying substrates；
(4) plantation of water plant: by water plant planting in the matrix that lakeside zone mixes after conditioning.
2. a kind of technology of lakeside zone intensified denitrification and dephosphorization according to claim 1, which is characterized in that institute in step (1)
Stating the smashed powder diameter of reed stalk is 0.05-0.8mm.
3. a kind of technology of lakeside zone intensified denitrification and dephosphorization according to claim 1, which is characterized in that institute in step (1)
State the condition that reed powder prepares charcoal are as follows: in 350-550 DEG C, the nitrogen protection that programmed rate is 5-10 DEG C/min
Under, Pintsch process 1-3h is cooled to room temperature, after rinsing 2-3 times with distilled water to remove surface impurity, drying.
4. a kind of technology of lakeside zone intensified denitrification and dephosphorization according to claim 1, which is characterized in that institute in step (2)
It states reed stalk and is cut into segment length as 3-15cm.
5. a kind of technology of lakeside zone intensified denitrification and dephosphorization according to claim 1, which is characterized in that the drying temperature
Degree is 80-85 DEG C, and the time is for 24 hours.
6. a kind of technology of lakeside zone intensified denitrification and dephosphorization according to claim 1, which is characterized in that adjusted in step (3)
Manage the 10-50cm that stromal thickness is lakeside zone surface layer matrix.
7. a kind of technology of lakeside zone intensified denitrification and dephosphorization according to claim 1, which is characterized in that institute in step (3)
The depth of water after the lakeside zone planting aquatic plants stated is 0.1-1m.
8. a kind of technology of lakeside zone intensified denitrification and dephosphorization according to claim 1, which is characterized in that institute in step (4)
Water plant is stated as the 1-2 kind in reed, calamus, the stem or leaf of cattail, Chinese celery, water spinach, planting patterns is rhizome form.
9. a kind of technology of lakeside zone intensified denitrification and dephosphorization according to claim 1, which is characterized in that it is dense to be suitable for total nitrogen
Degree≤15mg/L and total orthophosphates concentration≤0.80mg/L purification of water quality.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112897677A (en) * | 2021-01-19 | 2021-06-04 | 北京林业大学 | Biological detention pond of intensive nitrogen and phosphorus removal |
| WO2022205982A1 (en) * | 2021-03-31 | 2022-10-06 | 河海大学 | Sediment covering material for eutrophicated rivers and lakes, and preparation method and use method therefor |
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