CN106277650B - A kind of raising sewage disposal process - Google Patents
A kind of raising sewage disposal process Download PDFInfo
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- CN106277650B CN106277650B CN201610875016.6A CN201610875016A CN106277650B CN 106277650 B CN106277650 B CN 106277650B CN 201610875016 A CN201610875016 A CN 201610875016A CN 106277650 B CN106277650 B CN 106277650B
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- sewage
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- ammonia nitrogen
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- pond body
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- 239000010865 sewage Substances 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000008569 process Effects 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000001914 filtration Methods 0.000 claims abstract description 17
- 239000007787 solid Substances 0.000 claims abstract description 16
- 239000000725 suspension Substances 0.000 claims abstract description 16
- 238000000855 fermentation Methods 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 238000004804 winding Methods 0.000 claims abstract description 8
- 239000002957 persistent organic pollutant Substances 0.000 claims abstract description 7
- 239000008213 purified water Substances 0.000 claims abstract description 6
- 241001148470 aerobic bacillus Species 0.000 claims abstract description 4
- 230000008953 bacterial degradation Effects 0.000 claims abstract description 4
- 230000002262 irrigation Effects 0.000 claims abstract description 4
- 238000003973 irrigation Methods 0.000 claims abstract description 4
- 239000000706 filtrate Substances 0.000 claims description 11
- 239000004576 sand Substances 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims description 10
- 239000010935 stainless steel Substances 0.000 claims description 10
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 6
- 230000008595 infiltration Effects 0.000 claims description 6
- 238000001764 infiltration Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims description 5
- 239000011574 phosphorus Substances 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000003895 organic fertilizer Substances 0.000 claims description 4
- 239000002028 Biomass Substances 0.000 claims description 3
- 229910021529 ammonia Inorganic materials 0.000 claims description 3
- 230000015556 catabolic process Effects 0.000 claims description 3
- 238000006731 degradation reaction Methods 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims description 3
- 230000008635 plant growth Effects 0.000 claims description 3
- PDNNQADNLPRFPG-UHFFFAOYSA-N N.[O] Chemical compound N.[O] PDNNQADNLPRFPG-UHFFFAOYSA-N 0.000 claims 1
- 239000010802 sludge Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 9
- 239000002699 waste material Substances 0.000 abstract description 6
- 230000000593 degrading effect Effects 0.000 abstract 1
- 238000009360 aquaculture Methods 0.000 description 7
- 244000144974 aquaculture Species 0.000 description 7
- 239000002351 wastewater Substances 0.000 description 7
- 238000001035 drying Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- 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
- C02F3/30—Aerobic and anaerobic processes
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Botany (AREA)
- Biotechnology (AREA)
- Biological Treatment Of Waste Water (AREA)
- Fertilizers (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention relates to a kind of raising sewage disposal process, comprising the following steps: (1) winding shaft collects the sewage of farm's discharge；(2) it filters；(3) anaerobic fermentation；(4) ammoxidation reaction 1-2 days reduce the ammonia nitrogen concentration in sewage；(5) it is carried out aerobic reaction 1-2 days under the conditions of 15-25 DEG C, using the COD and ammonia nitrogen in aerobic bacteria degradation sewage, reduces COD and ammonia nitrogen concentration；(6) to biodegradable planting greenhouse, COD's sewage transport after aerobic reaction and ammonia nitrogen in sewage of degrading purify water；(7) purified water is used for field irrigation.Solid suspension, ammonia nitrogen and organic pollutant concentration in sewage effectively can be reduced to achievement level by present invention process, entire treatment process complete biodegradable, there is no secondary pollution, the removal effect for filtering solid suspension in link is good, the difficulty processing cost for reducing subsequent sewage treatment is low, the sludge filtered out spontaneously dries, and is not required to device for dehydrating sladge waste and is dehydrated, processing cost is low.
Description
Technical field:
The present invention relates to a kind of raising sewage disposal process.
Background technique:
Aquaculture wastewater has been agricultural non-point source pollution primary pollution source, and especially aquaculture wastewater amount is big, concentration is high, environmental protection treatment
Difficulty is big, constantly initiation contamination accident.Organic concentration is high in aquaculture wastewater, suspended matter is more, ammonia nitrogen and phosphorus content are high, and items refer to
Mark has exceeded even tens times of several times of national emission standard, it has also become the pollution sources bigger than industrial wastewater and sanitary sewage,
It is the important sources of water pollution.Though having the treatment process to aquaculture wastewater at present, chemical agent is needed, is caused secondary
Pollution, and the sludge filtered out in sewage disposal process can not be utilized directly, need to be dehydrated by device for dehydrating sladge waste,
Processing cost is high, in filtering link, the poor removal effect of solid suspension, and to ammonia nitrogen in sewage and organic pollutant
Treatment effect is also poor, does not meet discharge standard.
Summary of the invention:
In order to compensate for the shortcomings of the prior art, the present invention provides a kind of raising sewage disposal process, effectively will be in sewage
Solid suspension, ammonia nitrogen and organic pollutant concentration be reduced to achievement level, entire treatment process complete biodegradable does not have
Secondary pollution, the removal effect for filtering solid suspension in link is good, and the difficulty processing cost for reducing subsequent sewage treatment is low,
The sludge filtered out spontaneously dries, and is not required to device for dehydrating sladge waste and is dehydrated, processing cost is low, solves and exists in the prior art
The problem of.
Used technical solution is the present invention to solve above-mentioned technical problem:
A kind of raising sewage disposal process, comprising the following steps:
(1) winding shaft collects the sewage of farm's discharge；
(2) sewage transport in winding shaft is filtered to biological filter；
(3) solid suspension for obtaining step (2) is used as production organic fertilizer, and the sewage after filtering solid suspension is defeated
It send to anaerobic reactor, is carried out anaerobic fermentation 20-30 days under the conditions of 15-25 DEG C, remove the organic pollutant in sewage；
(4) biogas for generating step (3) anaerobic fermentation is used for biomass fuel, extremely by the sewage transport after anaerobic fermentation
Ammonia oxidation reactor carries out ammoxidation reaction 1-2 days under the conditions of 15-25 DEG C, reduces the ammonia nitrogen concentration in sewage；
(5) aerobic reaction 1-2 will be carried out under the conditions of 15-25 DEG C through step (4) treated sewage transport to aerobic tank
It reduces COD and ammonia nitrogen concentration using the COD and ammonia nitrogen in aerobic bacteria degradation sewage；
(6) by step (5) treated sewage transport to biodegradable planting greenhouse, with the COD in strain degradation sewage
And ammonia nitrogen, the nitrogen and phosphorus in sewage are absorbed using plant growth, is purified water；
(7) field irrigation is used for through step (6) purified water；
Biological filter described in step (2), including pond body are equipped with the drainpipe of coiling setting in the bottom of pond body,
Drainpipe is equipped with infiltration aperture, and drainpipe is connected with the outlet pipe being set to outside pond body by pipeline, is covered above drainpipe
It is stamped gradation sand filter blanket, permeable filter block layer is equipped with above gradation sand filter blanket, several filters are equipped with above permeable filter block layer
Water pipe, the filter pipe include the collector pipe being vertically arranged, and infiltration aperture is equipped on collector pipe, is wrapped with Buddhist nun in collector pipe
Suede screen cloth, the lower end of collector pipe pass through permeable filter block and are connected with drainpipe, stainless steel filtering net frame are arranged with outside collector pipe, no
The lower end of rust steel screen holder sequentially passes through permeable filter block and gradation sand filter blanket is fixed on pool bottom, in stainless steel filtering net frame sum aggregate
It is filled with filtrate between water pipe, water inlet pipe is equipped with above pond body, water inlet pipe is connected with the bilge discharge pipe being set to outside pond body.
The permeable filter block layer includes the permeable filter block that several are spliced into, and preformed hole is equipped on permeable filter block, pre-
Filled with elastic filter material in boxing out.
The bottom of collector pipe is connected with an interface of a three-way connector, other two interfaces by conduit coupling with
Drainpipe is connected.
An annular convex platform is axially arranged with along pond body at the edge of permeable filter block layer.
The present invention using the above scheme, effectively drops solid suspension, ammonia nitrogen and the organic pollutant concentration in sewage
As low as achievement level, entire treatment process complete biodegradable filters the removal effect of solid suspension in link without secondary pollution
Fruit is good, reduces the difficulty of subsequent sewage treatment, and the sludge filtered out spontaneously dries, and is not required to device for dehydrating sladge waste and is dehydrated,
Processing cost is low, and the present invention is not merely used for aquaculture wastewater, as long as there is the sewage of solid suspension to be all suitable for, filters and adopts in link
Biological filter, it is instead of existing filter plant and device for dehydrating sladge waste, and filter effect is more preferable；Biofiltration
Collector pipe in pond is filtered sewage, improves filter effect and efficiency, reduces the dosage of filtrate and reduces replacement
The frequency of filtrate；Permeable filter block can be precast spliced according to actual needs, easy for assemble or unload, and the setting of annular convex platform avoids sludge
It is deposited in pond body side wall root and is not easy drying, influence the volume drying progress of sludge.
Detailed description of the invention:
Fig. 1 is the structural schematic diagram of biological filter of the present invention.
The structural schematic diagram of pipeline in the biological filter of the present invention Fig. 2.
Fig. 3 is the structural schematic diagram of collector pipe.
Fig. 4 is the structural schematic diagram of permeable filter block.
In figure, 1, pond body, 2, drainpipe, 3, outlet pipe, 4, gradation sand filter blanket, 5, permeable filter block layer, 6, filter pipe, 7, collection
Water pipe, 8, Buddhist nun's suede screen cloth, 9, stainless steel filtering net frame, 10, filtrate, 11, water inlet pipe, 12, bilge discharge pipe, 13, permeable filter block,
14, preformed hole, 15, elastic filter material, 16, three-way connector, 17, conduit coupling, 18, annular convex platform.
Specific embodiment:
In order to clarify the technical characteristics of the invention, below by specific embodiment, and its attached drawing is combined, to this hair
It is bright to be described in detail.
A kind of raising sewage disposal process, using following processing step:
(1) winding shaft collects the sewage of farm's discharge；
(2) sewage transport in winding shaft is filtered to biological filter；
(3) solid suspension for obtaining step (2) is used as production organic fertilizer, and the sewage after filtering solid suspension is defeated
It send to anaerobic reactor, is carried out anaerobic fermentation 20-30 days under the conditions of 15-25 DEG C, remove the organic pollutant in sewage；
(4) biogas for generating step (3) anaerobic fermentation is used for biomass fuel, extremely by the sewage transport after anaerobic fermentation
Ammonia oxidation reactor carries out ammoxidation reaction 1-2 days under the conditions of 15-25 DEG C, reduces the ammonia nitrogen concentration in sewage；
(5) aerobic reaction 1-2 will be carried out under the conditions of 15-25 DEG C through step (4) treated sewage transport to aerobic tank
It reduces COD and ammonia nitrogen concentration using the COD (COD) and ammonia nitrogen in aerobic bacteria degradation sewage；
(6) by step (5) treated sewage transport to biodegradable planting greenhouse, with the COD in strain degradation sewage
And ammonia nitrogen, the nitrogen and phosphorus in sewage are absorbed using plant growth, is purified water；Above-mentioned biodegrade planting greenhouse, is the present invention
The patent of invention of the Patent No. 2014101260186 of people's application.Sewage intercepting well biodegrade planting greenhouse is handled, it is good
Place is first is that biodegrade, without secondary pollution, second is that the nitrogen and phosphorus in sewage are biodegradable the vegetables planted in planting greenhouse
It is utilized with plant, creates benefit.
(7) field irrigation is used for through step (6) purified water；Aquaculture wastewater after the first six above-mentioned step process,
COD concentration is lower than 150 mg/litres, and ammonia nitrogen concentration is lower than 150 mg/litres, and solid suspension concentration is lower than 50 mg/litres, biochemical
Oxygen demand (BOD) is nearly no detectable, and complies fully with discharge standard.
As shown in Figs 1-4, biological filter described in step (2), including pond body 1 are equipped with coiling in the bottom of pond body 1 and set
The drainpipe 2 set, is equipped with infiltration aperture on drainpipe 2, and drainpipe 2 passes through pipeline and 3 phase of outlet pipe outside pond body 1
Even, it is covered with gradation sand filter blanket 4 above drainpipe 2, permeable filter block layer 5 is equipped with above gradation sand filter blanket 4, in permeable filter
Several filter pipes 6 are equipped with above brick layer 5, the filter pipe 6 includes the collector pipe 7 being vertically arranged, and is equipped with and seeps on collector pipe 7
Water aperture is wrapped with Buddhist nun's suede screen cloth 9 in collector pipe 7, and the lower end of collector pipe 7 passes through permeable filter block 5 and is connected with drainpipe 2,
Stainless steel filtering net frame 7 is arranged with outside collector pipe 2, the lower end of stainless steel filtering net frame 7 sequentially passes through permeable filter block 13 and graded sand
Filtering layer 14 is fixed on 1 bottom of pond body, and filtrate 10 is filled between stainless steel filtering net frame 9 and collector pipe 7, is set above pond body 1
There is water inlet pipe 11, water inlet pipe 11 is connected with the bilge discharge pipe 12 being set to outside pond body 1.
The permeable filter block layer 5 includes the permeable filter block 13 that several are spliced into, and preformed hole is equipped on permeable filter block 13
14, elastic filter material 15 is filled in preformed hole 14.Permeable filter block 13 can be precast spliced according to actual needs, installing and dismounting side
Just, elastic filter material 15 can take out in use for some time, because can guarantee that preformed hole 14 is tight by filtrate using elastic filter material 15
Close filling, and guarantee filter effect.
The bottom of collector pipe 7 is connected with an interface of a three-way connector 16, other two interfaces are connected by pipeline
Part 17 is connected with drainpipe 2.On the one hand setting by three-way connector 16 and conduit coupling 17 is to guarantee quickly connection, separately
It is on the one hand to guarantee the leakproofness of connection.
An annular convex platform 18 is circumferentially with along pond body 1 at the edge of permeable filter block layer 5.The setting of annular convex platform 18 avoids
Sludge is deposited in 1 side wall root of pond body and is not easy drying, influences the volume drying progress of sludge.
Aquaculture wastewater after winding shaft discharge, enters pond body 1 by water inlet pipe 11, into pond body by bilge discharge pipe 12
Sewage a part in 1 enters 4 secondary filter of graded sand filtering layer after permeable filter block 13 filters out solid suspension, then passes through
Infiltration aperture enters drainpipe 2 and is expelled to outlet pipe 3, and filtered sewage is sent into anaerobic reactor by outlet pipe 3.Another part
Sewage passes through the aperture that seeps water after the filtrate 10 in stainless steel filtering net frame and the Buddhist nun's suede screen cloth 8 being wrapped in outside collector pipe 7 filter
Into collector pipe 7, the water in collector pipe 7 converges to drainpipe 2, then drains into outlet pipe 3.The setting of filter pipe 6 increases
The contact area of sewage and filtrate, improves filter effect and efficiency, reduces the dosage of filtrate and reduces replacement filtrate
Frequency.The sludge filtered out is easy drying because of the permeable cause of permeable filter block layer, is cleared up, is not needed again after naturally dry
Device for dehydrating sladge waste, the sludge after drying are used as production organic fertilizer.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Place is not described in detail by the present invention, is the well-known technique of those skilled in the art of the present technique.
Claims (3)
1. a kind of raising sewage disposal process, it is characterised in that: the following steps are included:
(1) winding shaft collects the sewage of farm's discharge；
(2) sewage transport in winding shaft is filtered to biological filter；
(3) solid suspension for obtaining step (2) is used as production organic fertilizer, extremely by the sewage transport after filtering solid suspension
Anaerobic reactor carries out anaerobic fermentation 20-30 days under the conditions of 15-25 DEG C, removes the organic pollutant in sewage；
(4) biogas for generating step (3) anaerobic fermentation is used for biomass fuel, by the sewage transport after anaerobic fermentation to ammonia oxygen
Change reactor, carried out ammoxidation reaction 1-2 days under the conditions of 15-25 DEG C, reduces the ammonia nitrogen concentration in sewage；
(5) it will be carried out aerobic reaction 1-2 days under the conditions of 15-25 DEG C through step (4) treated sewage transport to aerobic tank,
Using the COD and ammonia nitrogen in aerobic bacteria degradation sewage, COD and ammonia nitrogen concentration are reduced；
(6) by step (5) treated sewage transport to biodegradable planting greenhouse, with the COD and ammonia in strain degradation sewage
Nitrogen absorbs the nitrogen and phosphorus in sewage using plant growth, purifies water；
(7) field irrigation is used for through step (6) purified water；
Biological filter described in step (2), including pond body are equipped with the drainpipe of coiling setting in the bottom of pond body, are draining
Pipe is equipped with infiltration aperture, and drainpipe is connected with the outlet pipe being set to outside pond body by pipeline, is covered with above drainpipe
Gradation sand filter blanket is equipped with permeable filter block layer above gradation sand filter blanket, several filter pipes are equipped with above permeable filter block layer,
The filter pipe includes the collector pipe being vertically arranged, and infiltration aperture is equipped on collector pipe, is wrapped with Buddhist nun's suede net in collector pipe
Cloth, the lower end of collector pipe pass through permeable filter block and are connected with drainpipe, and stainless steel filtering net frame, stainless steel are arranged with outside collector pipe
The lower end of screen holder sequentially passes through permeable filter block and gradation sand filter blanket is fixed on pool bottom, in stainless steel filtering net frame and collector pipe
Between be filled with filtrate, water inlet pipe is equipped with above pond body, water inlet pipe is connected with the bilge discharge pipe outside the pond body；
The permeable filter block layer includes the permeable filter block that several are spliced into, and preformed hole is equipped on permeable filter block, in preformed hole
It is interior to be filled with elastic filter material.
2. raising sewage disposal process according to claim 1, it is characterised in that: the bottom of collector pipe is connect with a threeway
One interface of part is connected, other two interfaces are connected by conduit coupling with drainpipe.
3. raising sewage disposal process according to claim 1 or 2, it is characterised in that: on the edge edge of permeable filter block layer
Pond body is axially arranged with an annular convex platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610875016.6A CN106277650B (en) | 2016-09-30 | 2016-09-30 | A kind of raising sewage disposal process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610875016.6A CN106277650B (en) | 2016-09-30 | 2016-09-30 | A kind of raising sewage disposal process |
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| Publication Number | Publication Date |
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| CN106277650A CN106277650A (en) | 2017-01-04 |
| CN106277650B true CN106277650B (en) | 2019-03-22 |
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| CN106869095B (en) * | 2016-12-31 | 2024-04-05 | 天津青川科技发展有限公司 | Vertical direction Tree pit drainage system |
| CN111777263B (en) * | 2020-06-05 | 2021-03-30 | 成都工业学院 | A kind of resource treatment method of aquaculture wastewater |
| CN112158946A (en) * | 2020-11-03 | 2021-01-01 | 中国水产科学研究院渔业机械仪器研究所 | Filter block for sewage treatment and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2367376Y (en) * | 1999-04-29 | 2000-03-08 | 王纪考 | Foul-water treating-filtering-recovering apparatus |
| CN102807302B (en) * | 2012-08-27 | 2014-04-23 | 广西玉林市大智环保工程有限公司 | Method for treating livestock and poultry breeding waste water |
| CN103861338A (en) * | 2014-04-08 | 2014-06-18 | 孔强光 | Blocking-free sewage filtering tank |
| CN103979736B (en) * | 2014-05-21 | 2015-10-28 | 南京大学 | The constructed wetland device of low-pollution water denitrogenation and treatment process thereof |
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