CN110615575B - Flood season agricultural area fruit and vegetable composite ecological system based on nitrogen and phosphorus reduction - Google Patents

Flood season agricultural area fruit and vegetable composite ecological system based on nitrogen and phosphorus reduction Download PDF

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Publication number
CN110615575B
CN110615575B CN201910828151.9A CN201910828151A CN110615575B CN 110615575 B CN110615575 B CN 110615575B CN 201910828151 A CN201910828151 A CN 201910828151A CN 110615575 B CN110615575 B CN 110615575B
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water
fruit
layer
culture
vegetable
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CN110615575A (en
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黄荣新
魏东洋
王振兴
赖后伟
易新贵
李鑫华
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South China Institute of Environmental Sciences MEE
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South China Institute of Environmental Sciences MEE
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/02Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
    • 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
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • 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
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2203/00Apparatus and plants for the biological treatment of water, waste water or sewage
    • C02F2203/006Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
    • 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
    • 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
    • C02F3/34Biological treatment of water, waste water, or sewage characterised by the microorganisms used

Abstract

The invention discloses a nitrogen and phosphorus reduction-based composite ecological system for fruits and vegetables in an agricultural flood season area, which comprises a fruit and vegetable composite ecological system body for nitrogen and phosphorus reduction, a non-power water delivery system for river water diversion in the flood season and a power water delivery system for auxiliary river water diversion; the invention carries out purification treatment on eutrophic water quality based on a fruit and vegetable composite ecological system; utilize quality of water pretreatment systems, fruit vegetables ecosystem, secondary clean system to carry out nitrogen phosphorus to subduct from the water source diversion thereby accomplish to purify water quality, its whole process does not produce new pollutant, can guarantee ecological balance, has sustainable development's ecological meaning.

Description

Flood season agricultural area fruit and vegetable composite ecological system based on nitrogen and phosphorus reduction
Technical Field
The invention relates to the technical field of agricultural sewage treatment, in particular to a nitrogen and phosphorus reduction-based flood season agricultural area fruit and vegetable composite ecological system.
Background
The agricultural sewage is sewage or liquid substance discharged in the processes of crop cultivation, livestock breeding, agricultural product processing and the like and influencing human health and environmental quality. The sources of the sewage mainly comprise farmland runoff, feedlot sewage and agricultural product processing sewage. The sewage contains various pathogens, suspended matters, fertilizers, pesticides, insoluble solids, salts and the like. The agricultural sewage is large in quantity and wide in influence range.
Since the development of agriculture, mankind has applied chemical fertilizers, clams, bactericides, herbicides and other chemical agents in large quantities in order to increase the yield of agricultural products, the production scale of livestock breeding, agricultural product processing and the like is getting bigger and bigger, the pollution of agricultural sewage is becoming serious, and the ecological balance is affected and even destroyed. Agricultural runoff is sprayed with pesticides and chemical fertilizers, only a small amount of pesticides and chemical fertilizers are generally attached or applied to crops, most of the rest pesticides remain in soil and float in the atmosphere, and then enter surface water through rainfall and runoff to cause pollution. Pesticides are a major aspect of agricultural pollution. Among them, nitrogen, phosphorus and other pollutants are most obvious. Especially, in the flood season, pollutants enter rivers, lakes and other water areas along with water flow to cause eutrophication, destroy a natural ecological system and make species in the ecological system lose balance.
In the prior art, agricultural sewage is treated by adopting a conventional technology. But the method has the defects of being limited by regions, longer in treatment process, higher in running cost, difficult to keep better ecological balance and the like due to the limitation of the treatment process. If the agricultural sewage can be treated by combining an agricultural compound system, the problems can be effectively solved.
Disclosure of Invention
Aiming at the problems, the invention provides a nitrogen and phosphorus reduction-based flood season agricultural area fruit and vegetable composite ecological system which is low in operation cost and not limited by regions.
The technical scheme of the invention is as follows: a nitrogen and phosphorus reduction-based composite ecological system for fruits and vegetables in an agricultural flood season area comprises a composite ecological system body for fruits and vegetables for nitrogen and phosphorus reduction, a non-power water delivery system for river diversion in the flood season and a power water delivery system for river auxiliary diversion;
the composite ecosystem body comprises a fruit and vegetable ecosystem, a water quality pretreatment system and a secondary purification system; the water quality pretreatment system, the fruit and vegetable ecological system and the secondary purification system are sequentially connected;
the fruit and vegetable ecosystem comprises fruit/vegetable plants and planting facilities for planting the fruit/vegetable plants;
the water quality pretreatment system comprises a pretreatment tank, a grid channel arranged on the pretreatment tank and used for coarse filtration, a first filter layer and a second filter layer which are arranged in the pretreatment tank and used for filtration, an adsorption layer arranged in the pretreatment tank and used for adsorption, and a waste discharge channel arranged at the bottom of the pretreatment tank and used for sewage discharge;
the secondary purification system comprises a purification treatment tank and an aeration device which is arranged in the purification treatment tank and used for supplying air.
Furthermore, a plurality of sludge discharge grooves are arranged at the bottom of the purification treatment tank in parallel, and a plurality of suspension brackets are arranged in the purification treatment tank and can be used for suspending the membrane-hanging filler; the suspension bracket can ensure that the suspension film is selectively used when in use, so that microorganisms can attach to the filler to utilize the metabolism function of the microorganisms, and organic pollutants in a dissolved and colloidal state in sewage are degraded and converted into harmless substances, so that the sewage is purified; in addition, the sludge discharge tank can effectively perform regular treatment on the sludge, and pollutants can be periodically treated along with the sludge.
Further, the planting facilities include fruit planting facilities and vegetable planting facilities.
Further, the fruit planting facility comprises a culture tank, a culture bracket, a planting bracket and a water conveying pipeline; the culture tank is arranged on the culture bracket, the planting bracket is arranged on the culture tank, and the water delivery pipeline is used for supplying and draining water to the culture tank; the method utilizes sufficient nitrogen and phosphorus elements in water as nutrient sources of fruit plants, and enables the water to continuously and circularly flow through the root systems of crops, so that on one hand, the supply of water and nutrients can be effectively ensured, and on the other hand, the content of nitrogen and phosphorus in water can be reduced.
Further, the culture tank is sequentially provided with a culture layer, a water storage layer, a filtering layer, an adsorption layer and a drainage layer from top to bottom; the culture layer can be used for placing a fruit plant growth culture medium; the water storage layer is a water absorption cotton layer; the filtering layer is a fine sand layer; the drainage layer is a cavity; the water delivery pipeline comprises a water inlet pipeline and a water drainage pipeline, the water inlet pipeline is connected with the water storage layer, and the water drainage pipeline is connected with the water drainage layer; the cultivation layer carries out the cultivation of plant, adopts the cotton filling that can guarantee moisture as the reservoir stratum effectively of washing water, simultaneously, can further purify waste water through the processing of filtering layer, adsorbed layer once more after the simple growth absorption of plant handles.
Further, the vegetable planting facility comprises a bottom drainage groove, a communication joint, an adsorption net pipe and a culture pipe; the culture tube is arranged at the upper end of the bottom drainage groove; the adsorption net pipe is arranged in the culture pipe and is connected with the bottom drainage groove through the communication joint; the vegetable planting facility is formed by transforming the pipe-inserting type upright post cultivation groove, the drainage groove additionally arranged at the bottom can effectively ensure discontinuous runoff of water quality, and the adsorption net pipe can effectively purify the water quality.
Further, the adsorption net pipe comprises a tubular filling net and an adsorption material filled in the tubular filling net; the adsorbing material is specifically activated carbon particles; has better adsorption effect on suspended matters in water, and can adsorb heavy metal ions which can not be absorbed by plant roots to a certain degree.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention carries out purification treatment on eutrophic water quality based on a fruit and vegetable composite ecological system; the water quality is purified by reducing nitrogen and phosphorus from a water source by using a water quality pretreatment system, a fruit and vegetable ecological system and a secondary purification system, no new pollutants are generated in the whole process, the ecological balance can be ensured, and the ecological significance of sustainable development is realized;
2. the non-power water delivery system and the power water outlet system are arranged together; the non-power water delivery system is adopted for natural water diversion in the flood season, namely the diversion canal is used for water diversion, so that the utilization efficiency of water flow can be fully exerted on the premise of flood prevention safety, the load of the power water delivery system is reduced, the distribution optimization is realized, and the economic efficiency is better
3. The ecological system provided by the invention has the advantages that the scale is suitable according to local conditions, the ecological system is optimally matched with a river channel, a small-sized Hu Pong, a reservoir and the like, the ecological system is not limited by regions, the whole structure is reasonable in design and simpler, and the ecological system is more suitable for being popularized and applied to agricultural sewage treatment in rural areas.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of a water pretreatment system according to the present invention;
FIG. 3 is a schematic view of the structure of the fruit growing facility of the present invention;
FIG. 4 is a schematic view of the structure of a culture tank of the present invention;
FIG. 5 is a schematic view of the structure of the vegetable growing facility of the present invention;
FIG. 6 is an exploded view of the connection of the communication joint and the adsorption net tube of the present invention;
FIG. 7 is a schematic diagram of the construction of the secondary purification system of the present invention;
FIG. 8 is a cross-sectional view of the secondary purification system of the present invention;
wherein, 1-fruit and vegetable composite ecosystem, 11-fruit and vegetable ecosystem, 12-water quality pretreatment system, 121-pretreatment tank, 122-grid channel, 123-first filter layer, 124-second filter layer, 125-adsorption layer, 13-secondary purification system, 131-purification treatment tank, 132-aeration equipment, 133-suspension bracket, 2-non-power water conveying system, 3-power water conveying system, 4-fruit planting facility, 41-culture tank, 411-culture layer, 412-water storage layer, 413-filter layer, 414-adsorption layer, 415-drainage layer, 42-culture bracket, 43-planting bracket, 5-vegetable planting facility, 51-bottom drainage tank, 52-communication joint, 53-adsorption net pipe, 53-net pipe, 54-culture tube.
Detailed Description
Example (b): as shown in fig. 1, the nitrogen and phosphorus reduction-based composite ecological system for fruits and vegetables in the agricultural flood season areas comprises a composite ecological system body 1 for nitrogen and phosphorus reduction of fruits and vegetables, a non-power water delivery system 2 for river water diversion in the flood season, and a power water delivery system 3 for auxiliary river water diversion;
the composite ecosystem body 1 comprises a fruit and vegetable ecosystem 11, a water quality pretreatment system 12 and a secondary purification system 13; the water quality pretreatment system 12, the fruit and vegetable ecological system 11 and the secondary purification system 13 are connected in sequence;
the fruit and vegetable ecosystem 11 comprises fruit/vegetable plants and planting facilities for planting the fruit/vegetable plants; the fruit/vegetable plants are cress and strawberries;
as shown in fig. 2, the water quality pretreatment system 12 includes a pretreatment tank 121, a grid channel 122 provided on the pretreatment tank 121 for coarse filtration, a first filter layer 123 and a second filter layer 124 provided inside the pretreatment tank 121 for filtration, an adsorption layer 125 provided inside the pretreatment tank 121 for adsorption, and a waste discharge channel provided at the bottom of the pretreatment tank 121 for waste discharge;
as shown in fig. 7 and 8, the secondary purification system 13 includes a purification treatment tank 131, an aeration device 132 provided inside the purification treatment tank 131 for supplying air; a plurality of sludge discharge grooves 1310 are arranged at the bottom of the purification treatment tank 131 in parallel, 1 suspension bracket 133 is arranged at intervals of 1.5m in the purification treatment tank 131, and the suspension bracket 133 can be used for suspending a film-hanging filler;
the planting facilities comprise a fruit planting facility 4 and a vegetable planting facility 5; as shown in fig. 3, the fruit planting facility 4 includes a culture tank 41, a culture support 42, a planting support 43, and a water pipe; the culture tank 41 is arranged on the culture bracket 42, the planting bracket 43 is arranged on the culture tank 41, and the water pipeline is used for supplying and draining water to the culture tank 41; as shown in fig. 4, the culture tank 41 includes, from top to bottom, a culture layer 411, a water storage layer 412, a filter layer 413, an adsorption layer 414, and a drainage layer 415; the culture layer 411 can be used for placing a fruit plant growth culture medium; the water storage layer 412 is specifically a water absorbent cotton layer; the filtering layer 413 is specifically a fine sand layer; the drainage layer 415 is a cavity; the water pipe comprises a water inlet pipe 441 and a water drainage pipe 442, the water inlet pipe 441 is connected with the water storage layer 412, and the water drainage pipe 442 is connected with the water drainage layer 415;
as shown in fig. 5 and 6, the vegetable planting facility 5 includes a bottom drain tank 51, a communication joint 52, an adsorption net pipe 53, and a culture pipe 54; the culture tube 54 is arranged at the upper end of the bottom drainage groove 51; the adsorption net pipe 53 is arranged in the culture pipe 54 and is connected with the bottom drainage groove 51 through the communication joint 52; the adsorption net pipe 53 includes a tubular filling net and an adsorption material filled in the tubular filling net, and the adsorption material is specifically activated carbon particles.
Wherein, the planting facilities are arranged in the ecological greenhouse;
the non-power water delivery system 2 is a water diversion channel, and the horizontal height of a water diversion port of the channel is between the normal operation water level and the flood prevention water level in the flood season;
the power water delivery system 3 comprises a water conduit and a water pump.
When in use, the unpowered water conveying system 2 is utilized to guide water into the fruit and vegetable composite ecological system body 1; the water to be treated firstly enters the water quality pretreatment system 12, and is subjected to rough filtration through the grating channel 122 to filter larger floating objects such as fallen leaves and branches, larger granular stones and soil blocks, and the like; then further filtering and adsorbing treatment is carried out through the first filtering layer 123, the second filtering layer 124 and the adsorbing layer 125; then the pretreated water enters a fruit and vegetable ecological system 11 and is treated by a fruit planting facility 4 and a vegetable planting facility 5 in sequence; finally, the water treated by the fruit and vegetable ecosystem enters a secondary purification system 13 and is discharged after being retreated by a biomembrane method; it should be noted that: the water quality pretreatment system 12, the fruit and vegetable ecological system 11 and the secondary purification system 13 are connected through a water delivery pump; and in the non-flood season, the power water conveying system 3 is used for replacing the non-power water conveying system 2 to guide water into the fruit and vegetable composite ecological system body 1.

Claims (3)

1. A nitrogen and phosphorus reduction-based composite ecological system for fruits and vegetables in an agricultural flood season area comprises a composite ecological system body (1) for fruits and vegetables for nitrogen and phosphorus reduction, a non-power water delivery system (2) for river water diversion in the flood season and a power water delivery system (3) for river auxiliary water diversion;
the ecological system is characterized in that the composite ecological system body (1) comprises a fruit and vegetable ecological system (11), a water quality pretreatment system (12) and a secondary purification system (13); the water quality pretreatment system (12), the fruit and vegetable ecological system (11) and the secondary purification system (13) are sequentially connected;
the fruit and vegetable ecosystem (11) comprises fruit/vegetable plants and planting facilities for planting the fruit/vegetable plants;
the water quality pretreatment system (12) comprises a pretreatment tank (121), a grid channel (122) arranged on the pretreatment tank (121) and used for coarse filtration, a first filtering layer (123) and a second filtering layer (124) which are arranged inside the pretreatment tank (121) and used for filtration, an adsorption layer (125) which is arranged inside the pretreatment tank (121) and used for adsorption, and a waste discharge channel which is arranged at the bottom of the pretreatment tank (121) and used for pollution discharge;
the secondary purification system (13) comprises a purification treatment tank (131) and an aeration device (132) which is arranged in the purification treatment tank (131) and used for supplying air;
the planting facilities comprise a fruit planting facility (4) and a vegetable planting facility (5);
the fruit planting facility (4) comprises a culture tank (41), a culture bracket (42), a planting bracket (43) and a water pipeline; the culture tank (41) is arranged on the culture bracket (42), the planting bracket (43) is arranged on the culture tank (41), and the water delivery pipeline is used for supplying and draining water to the culture tank (41);
the vegetable planting facility (5) comprises a bottom drainage groove (51), a communication joint (52), an adsorption net pipe (53) and a culture pipe (54); the culture tube (54) is arranged at the upper end of the bottom drainage groove (51); the adsorption net pipe (53) is arranged in the culture pipe (54) and is connected with the bottom drainage groove (51) through the communication joint (52);
the non-power water delivery system (2) is a water diversion ditch, and the horizontal height of a water diversion port of the non-power water delivery system is positioned between a normal operation water level and a flood season flood control water level; the power water conveying system (3) comprises a water diversion pipeline and a water diversion pump.
2. The flood season agricultural area fruit and vegetable composite ecosystem based on nitrogen and phosphorus reduction according to claim 1, wherein the culture tank (41) comprises a culture layer (411), a water storage layer (412), a filter layer (413), an adsorption layer (414) and a drainage layer (415) from top to bottom in sequence; the culture layer (411) can be used for placing a fruit plant growth culture medium; the water storage layer (412) is a water absorption cotton layer; the filtering layer (413) is a fine sand layer; the drainage layer (415) is a cavity; the water conveying pipeline comprises a water inlet pipeline (441) and a water draining pipeline (442), the water inlet pipeline (441) is connected with the water storage layer (412), and the water draining pipeline (442) is connected with the water draining layer (415).
3. The flood season agricultural area fruit and vegetable composite ecosystem based on nitrogen and phosphorus reduction according to claim 1, wherein the adsorption net pipe (53) comprises a tubular filling net and an adsorption material filled in the tubular filling net.
CN201910828151.9A 2019-09-03 2019-09-03 Flood season agricultural area fruit and vegetable composite ecological system based on nitrogen and phosphorus reduction Active CN110615575B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011052232U1 (en) * 2011-07-19 2012-01-26 Frank Hildebrand Wastewater treatment plant with a root chamber clarification area
CN103880257A (en) * 2014-04-14 2014-06-25 中国科学院亚热带农业生态研究所 Ecological combined treatment method and device for rural distributed sewage
CN104150704A (en) * 2014-07-25 2014-11-19 中国环境科学研究院 Treatment device and treatment method for sewage treatment and reclamation
CN104150701A (en) * 2014-07-25 2014-11-19 中国环境科学研究院 Device and method for quickly treating sewage by utilizing multistage inflow wetland and composite rotating biological contactor
CN104817239A (en) * 2015-05-19 2015-08-05 中国核工业华兴建设有限公司 Novel in-situ water purification system and purification method for heavily polluted river
CN207108765U (en) * 2017-08-24 2018-03-16 云南长江绿海环境工程股份有限公司 A kind of ecological purification pool system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011052232U1 (en) * 2011-07-19 2012-01-26 Frank Hildebrand Wastewater treatment plant with a root chamber clarification area
CN103880257A (en) * 2014-04-14 2014-06-25 中国科学院亚热带农业生态研究所 Ecological combined treatment method and device for rural distributed sewage
CN104150704A (en) * 2014-07-25 2014-11-19 中国环境科学研究院 Treatment device and treatment method for sewage treatment and reclamation
CN104150701A (en) * 2014-07-25 2014-11-19 中国环境科学研究院 Device and method for quickly treating sewage by utilizing multistage inflow wetland and composite rotating biological contactor
CN104817239A (en) * 2015-05-19 2015-08-05 中国核工业华兴建设有限公司 Novel in-situ water purification system and purification method for heavily polluted river
CN207108765U (en) * 2017-08-24 2018-03-16 云南长江绿海环境工程股份有限公司 A kind of ecological purification pool system

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