CN112028386A - Ecological restoration method for landscape land by using reclaimed water - Google Patents

Ecological restoration method for landscape land by using reclaimed water Download PDF

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Publication number
CN112028386A
CN112028386A CN202010785981.0A CN202010785981A CN112028386A CN 112028386 A CN112028386 A CN 112028386A CN 202010785981 A CN202010785981 A CN 202010785981A CN 112028386 A CN112028386 A CN 112028386A
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CN
China
Prior art keywords
landscape
water
ecological restoration
reclaimed water
sewage
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Pending
Application number
CN202010785981.0A
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Chinese (zh)
Inventor
周涛
徐飞
徐兴奎
顾磊
周伟恒
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Dongzhu Ecological Environmental Protection Co ltd
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Dongzhu Ecological Environmental Protection Co ltd
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Priority to CN202010785981.0A priority Critical patent/CN112028386A/en
Publication of CN112028386A publication Critical patent/CN112028386A/en
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/105Phosphorus compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/16Nitrogen compounds, e.g. ammonia
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/20Heavy metals or heavy metal compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • C02F3/302Nitrification and denitrification treatment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/32Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
    • C02F3/327Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae characterised by animals and plants
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F7/00Aeration of stretches of water

Abstract

The invention provides an ecological restoration method for a landscape land by using reclaimed water, which belongs to the technical field of ecological restoration of the landscape land and comprises the following steps: (1) introducing the municipal sewage into a desliming tank for sludge precipitation; (2) introducing the deslimed sewage into a purification tank, and purifying the sewage by a sewage processor; (3) introducing the regenerated water into a landscape river channel for reutilization, wherein emergent aquatic plants, submerged plants and floating plants are planted in the landscape river channel, biological fillers and aquatic animals are arranged in the landscape river channel, and an aerator is also arranged at the bottom of the landscape river channel. The method for ecologically restoring the landscape land by using the reclaimed water applies the reclaimed water to the landscape land to carry out ecological restoration on the landscape land, not only improves the utilization rate of water resources and reduces the treatment cost of urban sewage, but also can provide people with ecological landscape land for appreciation, achieves multiple purposes, and is suitable for large-scale popularization.

Description

Ecological restoration method for landscape land by using reclaimed water
Technical Field
The invention belongs to the technical field of landscape land ecological restoration, and particularly relates to an ecological restoration method for a landscape land by using regenerated water.
Background
The reclaimed water is water which can be used beneficially and meets certain use requirements after wastewater or rainwater is properly treated. Compared with seawater desalination and cross-basin water transfer, the reclaimed water has obvious advantages. From the economic perspective, the cost of the reclaimed water is lowest, and from the environmental protection perspective, the sewage recycling is beneficial to improving the ecological environment and realizing the virtuous cycle of water ecology. Urban domestic sewage is one of main underground water pollution sources, and the main measures for preventing and treating underground water pollution are to improve the sewage treatment rate and upgrade and modify sewage treatment facilities. The water quality of the water treatment agent is between that of sewage and tap water, the urban sewage and the waste water after purification treatment reach the national standard, and the water treatment agent can be used as non-drinking water in a certain range and can be used for various aspects of urban landscape and common people life. In order to improve the domestic water pollution condition and provide more water resources, the regeneration water conservancy is used in China and is mainly supported, and the industry has obvious investment opportunities.
In order to solve the problem of water resource shortage, the recycling of urban sewage is increasingly important, and compared with the development of other water sources, the recycling of urban sewage has advantages. At present, water resources are increasingly in short supply, treated reclaimed water is reused for landscaping, pollutant discharge amount is reduced, accordingly, influence on water environment around cities is reduced, available reclaimed water amount is increased, the change is beneficial to environmental protection and water self-purification enhancement, adverse influence on hydrological environment of the whole area cannot be caused, and the application prospect is wide.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the method for ecologically restoring the landscape land by using the reclaimed water, which applies the reclaimed water to the landscape land to carry out ecological restoration on the landscape land, thereby not only improving the utilization rate of water resources and reducing the treatment cost of urban sewage, but also providing the ecological landscape land for viewing and admiring for people, achieving multiple purposes and being suitable for large-scale popularization.
In order to achieve the purpose, the invention is realized by the following technical scheme: an ecological restoration method for landscape land by using reclaimed water is characterized in that: the method comprises the following steps:
(1) introducing the municipal sewage into a desliming tank, wherein a filter screen is arranged in the desliming tank close to an inlet, and a flocculating agent is added for sludge precipitation to remove sludge in the municipal sewage;
(2) introducing the deslimed sewage into a purification tank, and purifying the sewage by a sewage processor to ensure that the discharged water reaches the discharge standard of reclaimed water;
(3) introducing the reclaimed water obtained in the step (2) into a landscape river channel for recycling, wherein a shallow water area and a deep water area are arranged in the landscape river channel, the reclaimed water is introduced from the shallow water area, emergent aquatic plants are planted in the shallow water area, submerged plants are planted at the bottom of the deep water area, floating plants are planted at the top of the deep water area through floating blocks, the floating blocks are fixed with the river channel through ropes, a hanging fence is hung below the floating blocks, biological fillers are filled in the hanging fence, aquatic animals are cultured in the landscape river channel, and an aerator is further arranged at the bottom of the landscape river channel. The method comprises the following steps of firstly, carrying out sludge removal treatment on the municipal sewage, filtering impurities in the sewage by using a filter screen, adsorbing and settling sludge and heavy metal ions in the sewage at the bottom by using a flocculating agent in a sludge removal tank, and further purifying the sewage after sludge removal in a purification tank by using a sewage treatment device so as to reach the discharge standard of reclaimed water; qualified reclaimed water is introduced into the landscape river for reuse, so that the sewage treatment cost can be saved, and the utilization rate of water resources is improved; because the content of nitrogen and phosphorus in the regenerated water is higher, the regenerated water is directly used for landscape lands which easily cause water and soil eutrophication at the landscape lands, emergent aquatic plants, floating plants, submerged plants and aquatic animals are matched in the riverways of the landscape lands for ecological restoration, the aquatic plants can absorb the nitrogen and phosphorus in the water and the soil, and the oxygen increasing machine can increase the oxygen content in the water, is beneficial to the growth of the aquatic animals and the aquatic plants and keeps ecological balance.
Further, the flocculating agent is composed of ferric sulfate and polymerized poly-ferric silicon in a mass ratio of 1: 2. The ferric sulfate has good adsorption effect on the sludge, and the polymerized poly-ferrum-silicon can not only effectively remove the sludge in the water, but also remove ammonia nitrogen and phosphorus in the sewage so as to solve the eutrophication problem of the reclaimed water.
Further, the emergent aquatic plant comprises one or more of reed, cress, cattail, canna and lotus.
Further, the submerged plant comprises one or more of eel grass, hornwort, watermifoil and hydrilla verticillata.
Further, the water-repellent plant comprises one or more of duckweed, azolla imbricata, duckweed and eichhornia crassipes.
Furthermore, the biological filler shell is made of ethylene propylene copolymer materials, and aerobic bacteria and anaerobic bacteria are arranged on the inner wall of the biological filler. The ethylene-propylene copolymer material does not produce toxic action on organisms in water after being soaked in water for a long time, is not easy to degrade, and has long service life; the aerobic bacteria and the anaerobic bacteria can enable the biological filler to have anaerobic and aerobic functions, the anaerobic bacteria can generate denitrification for denitrification, and the aerobic bacteria can remove organic matters, so that the water body is kept in ecological balance.
Further, the aquatic animals include zooplankton, benthonic animals, and fish. Zooplankton can provide food sources for fish, benthonic animals can reflect water quality conditions, ecological richness in the river channel of the landscape land is increased, the fish can purify water quality, and ecological diversity in the river channel of the landscape land is increased.
Further, the fish includes herring, grass carp, silver carp, bighead carp and carp.
Furthermore, the set interval of the aerator is 70-90 meters, and the distance between the aerator and the shore exceeds 40 meters.
Has the advantages that: compared with the prior art, the invention has the following advantages: the method for restoring the ecology of the landscape land by using the reclaimed water provided by the invention utilizes the reclaimed water after the urban sewage treatment to be used for the landscape land, so that the sewage treatment cost can be saved, the utilization rate of water resources can be improved, emergent aquatic plants, floating plants, submerged plants and aquatic animals are matched in a river channel of the landscape land to carry out the ecological restoration, the aquatic plants can absorb nitrogen and phosphorus in water and soil, and an aerator can increase the oxygen content in the water, is favorable for the growth of the aquatic animals and the aquatic plants, keeps the ecological balance and is suitable for large-scale popularization and application.
Drawings
FIG. 1 is a step diagram of an ecological restoration method for landscape land by using reclaimed water according to the present invention;
fig. 2 is a structural diagram of a landscape river according to the present invention.
In the figure: 1 a deslimer, 2 a purification tank, 3 a landscape river, 4 emergent aquatic plants, 5 floating plants, 6 submerged plants, 7 floating blocks, 8 hanging fences, 9 an aerator and 10 aquatic animals.
Detailed Description
The invention is further illustrated by the accompanying drawings and specific examples.
Example 1
As shown in fig. 1-2, an ecological restoration method for landscape lands by using reclaimed water is characterized in that: the method comprises the following steps:
(1) introducing municipal sewage into a desliming pool 1, wherein a filter screen 11 is arranged in the desliming pool 1 close to an inlet, and a flocculating agent is added for sludge precipitation, wherein the flocculating agent consists of ferric sulfate and poly-ferric silicon with a mass ratio of 1:2 so as to remove sludge in the municipal sewage;
(2) introducing the deslimed sewage into a purification tank 2, and purifying the sewage by a sewage processor to ensure that the discharged water reaches the discharge standard of reclaimed water;
(3) introducing the reclaimed water obtained in the step (2) into a landscape river channel 3 for recycling, wherein a shallow water area and a deep water area are arranged in the landscape river channel 3, the reclaimed water is introduced from the shallow water area, emergent aquatic plants 4 are planted in the shallow water area, the emergent aquatic plants 4 comprise one or more of reed, cress, cattail, canna and lotus, submerged plants 6 are planted at the bottom of the deep water area, the submerged plants 6 comprise one or more of tape grass, goldfish algae, watermifoil and hydrilla verticillata, floating plants 5 are planted at the tops of the submerged plants through floating blocks 7, the floating plants 5 comprise one or more of duckweed, azolla imbricata, duckweed and eichhornia crassipes, the floating blocks 7 are fixed with the river channel through ropes, hanging fences 8 are hung below the floating blocks 7, biological fillers are filled in the hanging fences 8, and the biological filler shell is made of an ethylene propylene copolymer material, the biological stuffing inner wall is equipped with aerobic bacteria and anaerobe, it has aquatic animal 10 to breed in landscape ground river course 3, aquatic animal 10 includes zooplankton, benthonic animal and fish, the fish includes black carp, grass carp, silver carp, bighead carp and carp, landscape ground river course 3 bottom still is equipped with oxygen-increasing machine 9, oxygen-increasing machine 9 sets up the interval and is 70-90 meters, and exceeds 40 meters with the bank distance.
In order to detect the ecological restoration condition of the reclaimed water to the landscape land, after the landscape land is subjected to ecological restoration for 1 year by utilizing the reclaimed water, the water quality in the river channel of the landscape land is monitored, and the water quality monitoring results are shown in the following table 1.
TABLE 1 result of monitoring water quality in landscape
BOD5/mg/L COD/mg/L SS/mg/L TN/mg/L NH3-N/mg/L TP/mg/L
Annual average concentration of water 2.31 5.6 6.5 9.7 2.9 0.39
Water quality standard of landscape land ≤20 ≥1.0 ≤20 ≤15 ≤5 ≤1.0
From the above results, it can be seen that the method for restoring the ecology of the landscape site by using the reclaimed water is excellent in the restoration of the ecology of the landscape site, and the reclaimed water used in the landscape site has excellent water quality, so that the treatment cost of the municipal sewage can be saved, the utilization of water resources can be improved, and the effect of restoring the ecology of the landscape site is excellent.
The foregoing is directed to embodiments of the present invention and, more particularly, to a method and apparatus for controlling a power converter in a power converter, including a power converter, a power converter.

Claims (9)

1. An ecological restoration method for landscape land by using reclaimed water is characterized in that: the method comprises the following steps: (1) introducing urban sewage into a deslimer tank (1), arranging a filter screen (11) in the deslimer tank (1) close to an inlet, and adding a flocculating agent for sludge precipitation to remove sludge in the urban sewage;
(2) introducing the deslimed sewage into a purification tank (2), and purifying the sewage by a sewage processor to ensure that the discharged water reaches the discharge standard of reclaimed water;
(3) introducing the regenerated water obtained in the step (2) into a landscape river channel (3) for recycling, wherein a shallow water area and a deep water area are arranged in the landscape river channel (3), the regenerated water is introduced from the shallow water area, emergent aquatic plants (4) are planted in the shallow water area, submerged plants (6) are planted at the bottom of the deep water area, floating plants (5) are planted at the top of the deep water area through floating blocks (7), the floating blocks (7) are fixed with the river channel through ropes, a hanging fence (8) is hung below the floating blocks (7), biological fillers are filled in the hanging fence (8), aquatic animals (10) are cultured in the landscape river channel (3), and an aerator (9) is further arranged at the bottom of the landscape river channel (3).
2. The ecological restoration method for landscape lands by using the reclaimed water as claimed in claim 1, wherein the method comprises the following steps: the flocculating agent consists of ferric sulfate and polymerized poly-ferric-silicon in a mass ratio of 1: 2.
3. The ecological restoration method for landscape lands by using the reclaimed water as claimed in claim 1, wherein the method comprises the following steps: the emergent aquatic plant (4) comprises one or more of reed, cress, cattail, canna and lotus.
4. The ecological restoration method for landscape lands by using the reclaimed water as claimed in claim 1, wherein the method comprises the following steps: the submerged plant (6) comprises one or more of tape grass, hornwort, watermifoil and hydrilla verticillata.
5. The ecological restoration method for landscape lands by using the reclaimed water as claimed in claim 1, wherein the method comprises the following steps: the water-retaining plant (5) comprises one or more of duckweed, azolla imbricata, duckweed and eichhornia crassipes.
6. The ecological restoration method for landscape lands by using the reclaimed water as claimed in claim 1, wherein the method comprises the following steps: the biological filler shell is made of ethylene propylene copolymer materials, and aerobic bacteria and anaerobic bacteria are arranged on the inner wall of the biological filler.
7. The ecological restoration method for landscape lands by using the reclaimed water as claimed in claim 1, wherein the method comprises the following steps: the aquatic animals (10) include zooplankton, benthonic animals, and fish.
8. The ecological restoration method for landscape lands by using the reclaimed water as claimed in claim 7, wherein the method comprises the following steps: the fish comprises herring, grass carp, silver carp, bighead carp and carp.
9. The ecological restoration method for landscape lands by using the reclaimed water as claimed in claim 1, wherein the method comprises the following steps: the distance between the oxygen increasing machines (9) and the shore is more than 40 meters, and the distance between the oxygen increasing machines is 70-90 meters.
CN202010785981.0A 2020-08-07 2020-08-07 Ecological restoration method for landscape land by using reclaimed water Pending CN112028386A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113170708A (en) * 2021-04-25 2021-07-27 北京市水科学技术研究院 Method for constructing underwater ecosystem of river and lake supplemented with reclaimed water

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113170708A (en) * 2021-04-25 2021-07-27 北京市水科学技术研究院 Method for constructing underwater ecosystem of river and lake supplemented with reclaimed water

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