CN101692782A - Fertigation facility of domestic sewage after biochemical treatment - Google Patents

Fertigation facility of domestic sewage after biochemical treatment Download PDF

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Publication number
CN101692782A
CN101692782A CN200910070848A CN200910070848A CN101692782A CN 101692782 A CN101692782 A CN 101692782A CN 200910070848 A CN200910070848 A CN 200910070848A CN 200910070848 A CN200910070848 A CN 200910070848A CN 101692782 A CN101692782 A CN 101692782A
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water
fertigation
filter
pool
fertilizer
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CN101692782B (en
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吴迪
高贤彪
何宗均
赵秋
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TIANJIN AGRICULTURAL RESOURCE AND ENVIRONMENT INST
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TIANJIN AGRICULTURAL RESOURCE AND ENVIRONMENT INST
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Abstract

The invention relates to a fertigation facility of domestic sewage after biochemical treatment, which consists of a water storage system and a fertigation system. The water storage system comprises a water storage pool, a sand filtering pool and a water collecting pool which are connected in series; a water distributor is arranged in the sand filtering pool; the tail end of the water storage pool corresponding to and parallel with the external water surface of the sand filtering pool is provide with a water collecting pipe, and the water collecting pipe is connected with a guide pipe arranged in the sand filtering pool; an overflow weir is arranged at the top of a wall body separating the sand filtering pool from the water collecting pool; and a sand outlet is arranged at the bottom at the other side in the water storage pool. A submerged pump which is connected with a main fertigation tape is arranged at the bottom in the water collecting pool in the water storage system; one path of the main fertigation tape is connected with a filter through a water feed valve, and the other path of the fertigation tape is connected with a fertilizer applicator through a fertilizer feed valve; the fertilizer applicator is respectively connected with a fertilizer tank and the filter; and the filter is connected with a fertigation branch pipe through a pressure adjustment valve and a pressure meter. The invention effectively solves the important problems of storage, fertigation, fertilizer application and the like of treated domestic sewage and is completely suitable for irrigating the crops by using water discharged by all domestic sewage treatment plants.

Description

Sanitary sewage fertigation facility after the biochemical treatment
Technical field
The present invention relates to the recycling facility of water resource, the sanitary sewage fertigation facility after particularly a kind of biochemical treatment that is used for agricultural irrigation.
Background technology
Along with social and economic condition is improved, the raising of people's living standard, the sanitary sewage disposal facility is complete gradually.The progressively improvement of domestic sewage treatment process and perfect, sewage after most of the processing has reached national agricultural irrigation standard, contain a large amount of carbon sources in the sewage simultaneously, nitrogen and phosphorus, both can replenish required nutrient for crop, also can improve soil structure, improve soil organisms content, it is the precious resources that catchments and to utilize fully again with nutrient, especially nowadays in the area of China's agricultural water resource and mineral resource critical shortage, seek the most effective water resource and utilize mode and resources conservation mode extremely urgent especially.
At present, drip irrigation is as a kind of state-of-the-art irrigation technique, because it has volume increase, water-saving, province's fertilizer, saving of labor, reduction field humidity, reduces advantage such as the generation of damage by disease and insect and accelerating and widely utilized by people.And according to handling back sewage quality characteristics and quantity of wastewater effluent, design collection water storage, drip irrigation, the facility beyond example still at present that topdresses one.
Therefore, providing a kind of sanitary sewage fertigation facility that is fit to after the biochemical treatment that above-mentioned area is used for agricultural irrigation, will be one of the important topic of scientific and technical personnel's research and development of this technical field.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point, solve the shortage of fresh water that above-mentioned area exists, problem such as sanitary sewage, utilization rate of fertilizer are low; Sanitary sewage fertigation facility after a kind of biochemical treatment that is used for agricultural irrigation is provided.
Implementation of the present invention is as follows for achieving the above object: the sanitary sewage fertigation facility after a kind of biochemical treatment is characterized in that: be made of water retention system and drip irrigation system;
Described water retention system comprises: storage cistern, sand filter, collecting basin, collector pipe, water-locator, mozzle, downflow weir, sediment ejection opening; Described storage cistern, sand filter are connected with collecting basin, are provided with water-locator in the sand filter; The parallel collector pipe that is provided with in described storage cistern terminal corresponding sand filter water surface place, the outside, and be connected with the mozzle that is provided with in the sand filter; Described sand filter is provided with downflow weir in the partition wall body top mutually with collecting basin; The opposite side bottom is provided with sediment ejection opening in the storage cistern;
Described drip irrigation system comprises: immersible pump, main irrigate band, water-delivery valve, defeated fertile valve, fertilizer applicator, fertilizer storing can, pressure regulating valve, manometer, filter, drip irrigation arm; The collecting basin inner bottom part that described immersible pump is arranged in the water retention system is connected with main irrigate band; Lead up to water-delivery valve and connect filter in described main irrigate band, another road connects fertilizer applicator by defeated fertile valve; Described fertilizer applicator is connected with fertilizer storing can, filter respectively, and filter is connected with the drip irrigation arm by pressure regulating valve, manometer.
Storage cistern bottom sloping in the described water retention system is 5~10 °.
The downflow weir position that is provided with in the described water retention system is lower than collector pipe 10~20cm.
Storage cistern in the described water retention system, sand filter and collecting basin dischargeable capacity ratio are 8: 1: 1.
The invention has the beneficial effects as follows: utilize this facility, effectively water saving, efficient fertilizer irrigation; Can alleviate the agricultural water resources anxiety, improve greatly and handle back sewage resource availability, reduce the consumption and the rate of fertilizer of groundwater resources, avoid the consequent wasting of resources and pollution of area source, make high crop yield, stable yields, reach the unification of environmental benefit and economic benefit.It is few, stable, easy and simple to handle that the present invention has a construction investment, and be convenient to be applied to the utilization again of the secondary biochemical treatment sanitary sewage that moving on a large scale.
In a word, reasonable in design of the present invention, easy to use, be widely used the effect highly significant.
Description of drawings
Fig. 1 implements process chart of the present invention;
Fig. 2 is a water retention system structural representation of the present invention;
Fig. 3 be Fig. 2 along A-A to cross-sectional schematic;
Fig. 4 is that drip irrigation system of the present invention is formed connection diagram.
Among the figure: 1 storage cistern, 2 sand filters, 3 sumps, 4 collector pipes, 5 water distributors, 6 aqueducts, 7 downflow weirs, 8 immersible pumps, 9 sediment ejection openings, 10 main irrigate bands, 11 water-delivery valves, 12 defeated fertile valves, 13 Development of Venturi Fertilizer Applicator, 14 fertilizer spreading tanks, 15 pressure regulating valves, 16 manometers, 17 filters, 18 drip irrigation arms.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, to according to embodiment provided by the invention, structure, details are as follows for feature:
Shown in Fig. 1-4 figure, the sanitary sewage fertigation facility after a kind of biochemical treatment is made of water retention system and drip irrigation system;
Described water retention system comprises: storage cistern 1, sand filter 2, collecting basin 3, collector pipe 4, water-locator 5, mozzle 6, downflow weir 7, sediment ejection opening 9;
Described storage cistern 1 is connected with sand filter 2, collecting basin 3, is provided with water-locator 5 in the sand filter 2; The parallel collector pipe 4 that is provided with in described storage cistern 1 water surface place, terminal corresponding sand filter 2 outside, and be connected with the mozzle 6 that is provided with in the sand filter 2; Described sand filter 2 is provided with downflow weir 7 in the partition wall body top mutually with collecting basin 3; The opposite side bottom is provided with sediment ejection opening 9 in the storage cistern 1.
Described drip irrigation system comprises: immersible pump 8, main irrigate band 10, water-delivery valve 11, defeated fertile valve 12, fertilizer applicator 13, fertilizer storing can 14, pressure regulating valve 15, manometer 16, filter 17, drip irrigation arm 18;
Described immersible pump 8 places the collecting basin 3 interior bottoms of water retention system to be connected with main irrigate band 10; Lead up to water-delivery valve 11 and connect filters 17 in described main irrigate band 10, another road connects fertilizer applicators 13 by defeated fertile valve 12; Described fertilizer applicator 13 is connected with fertilizer storing can 14, filter 17 respectively, and filter 17 is connected with drip irrigation arm 18 by pressure regulating valve 15, manometer 16.
Water retention system: the sanitary sewage after secondary biochemical treatment imports in the storage cistern 1, through static, post precipitation, by entering sand filter 2 behind collector pipe 4, mozzle 6, the water-locator 5, enters collecting basin 3 from bottom to top behind downflow weir 7.Suspension, silt etc. slowly flow to sediment ejection opening 9 by the gradient at the bottom of the pond in the storage cistern 1, regularly discharge.After sanitary sewage after the processing enters storage cistern 1, earlier enter sand filter 2 through post precipitation through collector pipe 4, mozzle 6 and water distributor 5, sanitary sewage flows in the sump 3 through downflow weir 7 from bottom to top, immersible pump 8 by the shaft bottom is transported to main irrigate band 10, enters drip irrigation system.Regularly discharge through sediment ejection opening 9 at the suspension that storage cistern 1 precipitates.
Suspension in 2 pairs of water of sand filter plays good removal effect, effectively avoids the irrigate band to stop up; Storage cistern 1 promptly plays the retaining effect, and the function of precipitation suspended material is arranged again, prolongs the replacement cycle of filtrate in the sand filter 2.
Drip irrigation system: the sanitary sewage in the collecting basin 3 is promoted to main irrigate band 10 in the drip irrigation system through immersible pump 8, pressure regulating valve 15 carries out the water delivery pressure regulation, to fail fertile valve 12 during fertilising opens, water-delivery valve 11 is closed, sanitary sewage is after Development of Venturi Fertilizer Applicator 13, the liquid fertilizer for preparing in the fertilizer storing can 14 is mixed with sanitary sewage after enter drip irrigation arm 18 behind filter 17, pressure regulating valve 15 and the manometer 16, the supply of realization water and fertilizer synchronization.As only needing a moisturizing, then will fail fertile valve 12 and close, water-delivery valve 11 is opened got final product.
The storage cistern 1 bottom gradient in the described water retention system is 5~10 °; Sediment ejection opening 9 is positioned at the water level bosom.
Downflow weir 7 positions that are provided with in the described water retention system are lower than collector pipe 10~20cm.
Storage cistern 1 in the described water retention system, sand filter 2 and sump 3 dischargeable capacitys ratio are: 8: 1: 1.
Fertilizer applicator 13 in the described drip irrigation system can adopt Development of Venturi Fertilizer Applicator, or the fertilizer applicator of same principle.
In the enforcement, described water retention system main body: length * wide * height is respectively 7m * 3m * 1.8m, and main body adopts reinforced concrete structure, integrated design.Wherein storage cistern, sand filter and sump length are respectively 5.6m, 0.7m and 0.7m, and wide and height is 3m and 1.8m, and whole water retention system is buried, inside and outside do waterproof.
Immersible pump in the drip irrigation system uses common two-phase electricity, lift 15m, specified carrying capacity 10m 3Water-main ∮ 32, drip irrigation arm ∮ 16, fertilizer storing can 25L.Drip head spacing 33cm, flow 2~3L/h decides on water delivery pressure.
Application example and effect explanation:
Man in Meng Quan village, Hangu District Cha Dian town, Tianjin uses sanitary sewage drip irrigation facility of the present invention, 3 mu of demonstration vinelands, and drip irrigation is propped up length of tube 1500m, specified carrying capacity 1.1m 3/ h, it is as shown in table 1 to improve back water quality situation, and ton water input nutrient is as shown in table 2.
Table 1 drip irrigation sanitary sewage water quality index
Figure G2009100708480D0000041
Table 2 drip irrigation sanitary sewage nutrient index (m 3)
Figure G2009100708480D0000042
Handle the back sanitary sewage because its water yield is big and contain nutrient components such as abundant nitrogen, phosphorus, can be used to water the farmland, can effectively alleviate the anxiety of agricultural water like this and alleviate pollution of area source, make sewage Zhong Shui, fertile resource obtain effectively utilizing to greatest extent simultaneously.For instance,,, be equivalent to every mu of ground and use the 77.25kg nitrogen, the plain and some organic substances of 10.88kg phosphorus according to the nutrient index of sanitary sewage if the 0.07 hectare corn need water sewage after 7.5 tons of processing.
The present invention is a kind of novel facility that utilizes sanitary sewage after the secondary biochemical treatment agricultural to be carried out drip irrigation liquid manure.The present invention as shown in Figure 1, technological process is to carry out sanitary sewage to collect, handle, through water retention system, drip irrigation system, act on crops.The present invention pays attention to handling storage, the drip irrigation flow of back sanitary sewage, and key links such as irrigating water quota and rate of fertilizer are applicable to that fully each sanitary sewage disposal plant effluent drip irrigation is applied on the crops.
Above-mentioned detailed description of carrying out with reference to the sanitary sewage fertigation facility of embodiment after to this biochemical treatment is illustrative rather than determinate, therefore in the variation and the modification that do not break away under the general plotting of the present invention, should belong within protection scope of the present invention.

Claims (4)

1. the sanitary sewage fertigation facility after the biochemical treatment is characterized in that: be made of water retention system and drip irrigation system;
Described water retention system comprises: storage cistern, sand filter, collecting basin, collector pipe, water-locator, mozzle, downflow weir, sediment ejection opening; Described storage cistern, sand filter are connected with collecting basin, are provided with water-locator in the sand filter; The parallel collector pipe that is provided with in described storage cistern terminal corresponding sand filter water surface place, the outside, and be connected with the mozzle that is provided with in the sand filter; Described sand filter is provided with downflow weir in the partition wall body top mutually with collecting basin; The opposite side bottom is provided with sediment ejection opening in the storage cistern;
Described drip irrigation system comprises: immersible pump, main irrigate band, water-delivery valve, defeated fertile valve, fertilizer applicator, fertilizer storing can, pressure regulating valve, manometer, filter, drip irrigation arm; The collecting basin inner bottom part that described immersible pump is arranged in the water retention system is connected with main irrigate band; Lead up to water-delivery valve and connect filter in described main irrigate band, another road connects fertilizer applicator by defeated fertile valve; Described fertilizer applicator is connected with fertilizer storing can, filter respectively, and filter is connected with the drip irrigation arm by pressure regulating valve, manometer.
2. the sanitary sewage fertigation facility after the biochemical treatment according to claim 1 is characterized in that: the storage cistern bottom sloping in the described water retention system is 5~10 °.
3. the sanitary sewage fertigation facility after the biochemical treatment according to claim 1 is characterized in that: the downflow weir position that is provided with in the described water retention system is lower than collector pipe 10~20cm.
4. the sanitary sewage fertigation facility after the biochemical treatment according to claim 1 is characterized in that: the storage cistern in the described water retention system, sand filter and collecting basin dischargeable capacity ratio are 8: 1: 1.
CN2009100708480A 2009-10-16 2009-10-16 Fertigation facility of domestic sewage after biochemical treatment Expired - Fee Related CN101692782B (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101891313A (en) * 2010-08-18 2010-11-24 哈尔滨工业大学水资源国家工程研究中心有限公司 Slow-filtration principle-based double cistern water collecting and purifying system
CN102845280A (en) * 2012-09-17 2013-01-02 柳州市京阳节能科技研发有限公司 Automatic-control water-saving spraying and dripping device for agriculture and forestry
CN104737882A (en) * 2013-12-25 2015-07-01 柳州市京阳节能科技研发有限公司 Self-controlled efficient water-saving spraying and dripping device
CN106745611A (en) * 2016-12-30 2017-05-31 农业部环境保护科研监测所 One kind irrigates water pretreatment system and farm irrigation system
CN112868479A (en) * 2021-01-11 2021-06-01 德宏州农业技术推广中心(德宏州农业科学研究所) Factory seedling transplanting and under-film fine management method for fresh corn
CN113141839A (en) * 2021-01-27 2021-07-23 信丰县谷山脐橙专业合作社 Five-in-one aerobic fermentation water and fertilizer integrated retting and drip irrigation tank

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101891313A (en) * 2010-08-18 2010-11-24 哈尔滨工业大学水资源国家工程研究中心有限公司 Slow-filtration principle-based double cistern water collecting and purifying system
CN102845280A (en) * 2012-09-17 2013-01-02 柳州市京阳节能科技研发有限公司 Automatic-control water-saving spraying and dripping device for agriculture and forestry
CN102845280B (en) * 2012-09-17 2014-02-19 柳州市京阳节能科技研发有限公司 Automatic-control water-saving spraying and dripping device for agriculture and forestry
CN104737882A (en) * 2013-12-25 2015-07-01 柳州市京阳节能科技研发有限公司 Self-controlled efficient water-saving spraying and dripping device
CN106745611A (en) * 2016-12-30 2017-05-31 农业部环境保护科研监测所 One kind irrigates water pretreatment system and farm irrigation system
CN112868479A (en) * 2021-01-11 2021-06-01 德宏州农业技术推广中心(德宏州农业科学研究所) Factory seedling transplanting and under-film fine management method for fresh corn
CN113141839A (en) * 2021-01-27 2021-07-23 信丰县谷山脐橙专业合作社 Five-in-one aerobic fermentation water and fertilizer integrated retting and drip irrigation tank
CN113141839B (en) * 2021-01-27 2024-02-23 信丰县谷山脐橙专业合作社 Five-in-one aerobic fermentation water fertilizer retting drip irrigation tank

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