CN204434425U - A kind of for seawater pond culture tail water cycle for the treatment of system - Google Patents
A kind of for seawater pond culture tail water cycle for the treatment of system Download PDFInfo
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- CN204434425U CN204434425U CN201520008895.3U CN201520008895U CN204434425U CN 204434425 U CN204434425 U CN 204434425U CN 201520008895 U CN201520008895 U CN 201520008895U CN 204434425 U CN204434425 U CN 204434425U
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Abstract
A kind of for seawater pond culture tail water cycle for the treatment of system, comprise the discharge channel for seawater pond culture, the tail end of described discharge channel connects with gate, described gate is connected with the gate hoist with gate hoist motor, described gate hoist motor is connected with the first frequency transformer, the first described frequency transformer is connected with PLC, described PLC is connected with upper computer, the rear portion of described gate is exactly groove-like irrigation canals and ditches, the outside surface of a sidewall of described groove-like irrigation canals and ditches is connected with ecological pool, and this sidewall is provided with the 3rd sand filtration wall be connected with the 3rd wire cloth group, the water-in of the 3rd described sand filtration wall is towards the 3rd wire cloth group, the water outlet of the 3rd described sand filtration wall is towards ecological pool.Such device avoids the defect not reaching the object removing the pollution of cultivation tail water of prior art.
Description
Technical field
The utility model belongs to tail water cycle for the treatment of systems technology field, is specifically related to a kind of for seawater pond culture tail water cycle for the treatment of system.
Background technology
Seawater pond culture is the main aquaculture model in China's Coastal Areas, seawater pond culture industry is the mode of production of carrying out raising and breeding marine products Economic animals and plants, it is one of the important channel that mankind's orientation utilizes Living marine resources, Development of Marine water industry, having can the higher fish, shrimps, shellfish, crab class etc. of some economic worth of centralized development, production cycle is shorter, the advantage that yield per unit is higher.
But in seawater pond culture process, can need to be discharged along with a large amount of tail water, and containing hazardous and noxious substances in these tail water, just simply be discharged by waterways at present, pollution in wide area can only be caused like this; And have a kind of technical scheme to be the purifying treatment using biological ball to carry out the tail water for seawater pond culture, but such mode can only filter out the impurity in oarse-grained tail water, does not still reach the object removed and pollute.
Utility model content
The purpose of this utility model provides a kind of for seawater pond culture tail water cycle for the treatment of system, comprise the discharge channel for seawater pond culture, the tail end of described discharge channel connects with gate, described gate is connected with the gate hoist with gate hoist motor, described gate hoist motor is connected with the first frequency transformer, the first described frequency transformer is connected with PLC, described PLC is connected with upper computer, the rear portion of described gate is exactly groove-like irrigation canals and ditches, the the first wire cloth group be made up of several wire cloths is provided with in the front portion of described groove-like irrigation canals and ditches, each wire cloth in the first described wire cloth group is provided with biological ball, the water flow sensor that same PLC is connected also is provided with in the front portion of described groove-like irrigation canals and ditches, the rear of the first described wire cloth group is provided with the first sand filtration wall, the water-in of the first described sand filtration wall is towards the first wire cloth group, the rear of the first described sand filtration wall is provided with the second wire cloth group be made up of several wire cloths, each wire cloth in the second described wire cloth group is provided with biological ball, the water outlet of the first described sand filtration wall is towards the second wire cloth group, the second described wire cloth group rear is provided with the second sand filtration wall, the water-in of the second described sand filtration wall is towards the second wire cloth group, the rear of the second described sand filtration wall is provided with the 3rd wire cloth group, each wire cloth in the 3rd described wire cloth group is provided with biological ball, the water outlet of the second described sand filtration wall is towards the 3rd wire cloth group, the outside surface of a sidewall of described groove-like irrigation canals and ditches is connected with ecological pool, and this sidewall is provided with the 3rd sand filtration wall be connected with the 3rd wire cloth group, the water-in of the 3rd described sand filtration wall is towards the 3rd wire cloth group, the water outlet of the 3rd described sand filtration wall is towards ecological pool, described ecological pool comprises with the first connected horizontal ecological ditch of the sidewall of the groove-like irrigation canals and ditches being provided with the 3rd sand filtration wall, described first laterally to arrange the water shoot with lift pump in ecological ditch, lift pump is connected with rotating machine by shaft coupling, described rotating machine is connected with the second frequency transformer, the second described frequency transformer is connected with PLC, water quality monitoring (WQM) sensor is also provided with in described first horizontal ecological ditch, described water quality monitoring (WQM) sensor is also connected with PLC, one end of the longitudinal ecological ditch in front portion same first of the described first horizontal ecological ditch is conducted, and the front portion of the horizontal ecological ditch side of the other end same second of first longitudinal ecological ditch is conducted, there is shrimp crab biological in described second horizontal ecological ditch, with second, longitudinally ecological ditch and the 3rd longitudinal ecological ditch are conducted described second horizontal ecological ditch opposite side, Algae Ecology repairing effect district is provided with in described second longitudinal ecological ditch, shellfish biological filter is provided with in described the 3rd longitudinal ecological ditch, described ecological pool is surrounded by beach face and the described same sidewall being provided with the groove-like irrigation canals and ditches of the 3rd sand filtration wall, with the module for tail water process in described upper computer, one of described water shoot is stretched out ecological pool.Such device avoids the defect not reaching the object removing pollution of prior art.
In order to overcome deficiency of the prior art, the utility model provides a kind of solution for seawater pond culture tail water cycle for the treatment of system, specific as follows:
A kind of for seawater pond culture tail water cycle for the treatment of system, comprise the discharge channel 1 for seawater pond culture, the tail end of described discharge channel 1 connects with gate 2, described gate 2 is connected with the gate hoist 3 with gate hoist motor 4, described gate hoist motor 4 is connected with the first frequency transformer 5, the first described frequency transformer 5 is connected with PLC6, described PLC6 is connected with upper computer 7, the rear portion of described gate 2 is exactly groove-like irrigation canals and ditches 8, the the first wire cloth group 9 be made up of several wire cloths is provided with in the front portion of described groove-like irrigation canals and ditches 8, each wire cloth in the first described wire cloth group 9 is provided with biological ball, the water flow sensor 23 that same PLC6 is connected also is provided with in the front portion of described groove-like irrigation canals and ditches 8, the rear of the first described wire cloth group is provided with the first sand filtration wall 11, the water-in of the first described sand filtration wall 11 is towards the first wire cloth group, the rear of the first described sand filtration wall 11 is provided with the second wire cloth group 12 be made up of several wire cloths, each wire cloth in the second described wire cloth group 12 is provided with biological ball, the water outlet of the first described sand filtration wall 11 is towards the second wire cloth group 12, the second described wire cloth group 12 rear is provided with the second sand filtration wall 13, the water-in of the second described sand filtration wall 13 is towards the second wire cloth group 12, the rear of the second described sand filtration wall 13 is provided with the 3rd wire cloth group 14, each wire cloth in the 3rd described wire cloth group 14 is provided with biological ball, the water outlet of the second described sand filtration wall 13 is towards the 3rd wire cloth group 14, the outside surface of a sidewall of described groove-like irrigation canals and ditches 8 is connected with ecological pool 15, and this sidewall is provided with the 3rd sand filtration wall 16 be connected with the 3rd wire cloth group 14, the water-in of the 3rd described sand filtration wall 16 is towards the 3rd wire cloth group 14, the water outlet of the 3rd described sand filtration wall 16 is towards ecological pool 15, described ecological pool 15 comprises with the first connected horizontal ecological ditch 17 of the sidewall of the groove-like irrigation canals and ditches 8 being provided with the 3rd sand filtration wall 16, described first laterally to arrange the water shoot 19 with lift pump 18 in ecological ditch 17, one of described water shoot 19 is stretched out ecological pool 15, lift pump 18 is connected with rotating machine 20 by shaft coupling, described rotating machine 20 is connected with the second frequency transformer 21, the second described frequency transformer 21 is connected with PLC6, water quality monitoring (WQM) sensor 22 is also provided with in described first horizontal ecological ditch 17, described water quality monitoring (WQM) sensor 22 is also connected with PLC6, one end of the longitudinal ecological ditch 24 in front portion same first of the described first horizontal ecological ditch 17 is conducted, and the front portion of horizontal ecological ditch 25 side of the other end same second of first longitudinal ecological ditch 24 is conducted, there is shrimp crab biological in described second horizontal ecological ditch 25, with second, longitudinally ecological ditch 26 and the 3rd longitudinal ecological ditch 27 are conducted described second horizontal ecological ditch 25 opposite side, Algae Ecology repairing effect district is provided with in described second longitudinal ecological ditch 26, shellfish biological filter is provided with in described the 3rd longitudinal ecological ditch 27, described ecological pool is surrounded by beach face 28 and the described same sidewall being provided with the groove-like irrigation canals and ditches 8 of the 3rd sand filtration wall 16, with the module for tail water process in described upper computer 7.
The width of the described first horizontal ecological ditch is 5-10m, degree of depth 3.5-4.0m.
The width of described first longitudinal ecological ditch is 5-10m, degree of depth 3.5-4.0m.
The width of the described second horizontal ecological ditch is 15-20m, degree of depth 3.5-4.0m.
The described area for seawater pond culture tail water cycle for the treatment of system accounts for the 10-15% of whole culture zone area.
Described groove-like irrigation canals and ditches and the area ratio scope of ecological pool are 1:4-1:3.
Described groove-like irrigation canals and ditches and ecological pool are all equipped with end oxygenation aeration system.
The width range of the first described sand filtration wall, the second sand filtration wall and the 3rd sand filtration wall is 1.5-2.0 rice.
The described profile for seawater pond culture tail water cycle for the treatment of system also can be rectangle, circle or square, described for seawater pond culture tail water cycle for the treatment of Operation system setting below pond culture district water port.
Application the utility model such scheme, tool has the following advantages:
This can by by the first wire cloth group for seawater pond culture tail water cycle for the treatment of system, first sand filtration wall, second wire cloth group, second sand filtration wall, 3rd wire cloth group and the 3rd sand filtration wall carry out adsorption removal the macrobead pollutent in tail water and small particles of pollution thing, then the tail water of adsorption removal macrobead pollutent and small particles of pollution thing enters ecological pool, by first, laterally ecological ditch and first longitudinal ecological ditch enter the second horizontal ecological ditch like this, second longitudinal ecological ditch and the 3rd longitudinally ecological ditch, such second shrimp crab biology laterally in ecological ditch just can draw organic impurity in the tail water of adsorption removal macrobead pollutent and small particles of pollution thing to purify tail water, and the Algae Ecology repairing effect district arranged in second longitudinal ecological ditch can draw the nitrogen in tail water, phosphorus recycling, the shellfish biological filter arranged in other 3rd longitudinal ecological ditch can absorb the suspended particulate in the water body of tail water in a large number, plant plankton and chip, suppress planktonic organism food chain, reach the object of purification tail water thus.
Accompanying drawing explanation
Figure l is the structural representation for seawater pond culture tail water cycle for the treatment of system of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, utility model content is described further:
As shown in Figure 1, for seawater pond culture tail water cycle for the treatment of system, comprise the discharge channel 1 for seawater pond culture, the tail end of described discharge channel 1 connects with gate 2, described gate 2 is connected with the gate hoist 3 with gate hoist motor 4, described gate hoist motor 4 is connected with the first frequency transformer 5, the first described frequency transformer 5 is connected with PLC6, described PLC6 is connected with upper computer 7, the rear portion of described gate 2 is exactly groove-like irrigation canals and ditches 8, the the first wire cloth group 9 be made up of several wire cloths is provided with in the front portion of described groove-like irrigation canals and ditches 8, each wire cloth in the first described wire cloth group 9 is provided with biological ball, the water flow sensor 23 that same PLC6 is connected also is provided with in the front portion of described groove-like irrigation canals and ditches 8, the rear of the first described wire cloth group is provided with the first sand filtration wall 11, the water-in of the first described sand filtration wall 11 is towards the first wire cloth group, the rear of the first described sand filtration wall 11 is provided with the second wire cloth group 12 be made up of several wire cloths, each wire cloth in the second described wire cloth group 12 is provided with biological ball, the water outlet of the first described sand filtration wall 11 is towards the second wire cloth group 12, the second described wire cloth group 12 rear is provided with the second sand filtration wall 13, the water-in of the second described sand filtration wall 13 is towards the second wire cloth group 12, the rear of the second described sand filtration wall 13 is provided with the 3rd wire cloth group 14, each wire cloth in the 3rd described wire cloth group 14 is provided with biological ball, the water outlet of the second described sand filtration wall 13 is towards the 3rd wire cloth group 14, the outside surface of a sidewall of described groove-like irrigation canals and ditches 8 is connected with ecological pool 15, and this sidewall is provided with the 3rd sand filtration wall 16 be connected with the 3rd wire cloth group 14, the water-in of the 3rd described sand filtration wall 16 is towards the 3rd wire cloth group 14, the water outlet of the 3rd described sand filtration wall 16 is towards ecological pool 15, described ecological pool 15 comprises with the first connected horizontal ecological ditch 17 of the sidewall of the groove-like irrigation canals and ditches 8 being provided with the 3rd sand filtration wall 16, described first laterally to arrange the water shoot 19 with lift pump 18 in ecological ditch 17, one of described water shoot 19 is stretched out ecological pool 15, lift pump 18 is connected with rotating machine 20 by shaft coupling, described rotating machine 20 is connected with the second frequency transformer 21, the second described frequency transformer 21 is connected with PLC6, water quality monitoring (WQM) sensor 22 is also provided with in described first horizontal ecological ditch 17, described water quality monitoring (WQM) sensor 22 is also connected with PLC6, one end of the longitudinal ecological ditch 24 in front portion same first of the described first horizontal ecological ditch 17 is conducted, and the front portion of horizontal ecological ditch 25 side of the other end same second of first longitudinal ecological ditch 24 is conducted, there is shrimp crab biological in described second horizontal ecological ditch 25, with second, longitudinally ecological ditch 26 and the 3rd longitudinal ecological ditch 27 are conducted described second horizontal ecological ditch 25 opposite side, Algae Ecology repairing effect district is provided with in described second longitudinal ecological ditch 26, shellfish biological filter is provided with in described the 3rd longitudinal ecological ditch 27, described ecological pool is surrounded by beach face 28 and the described same sidewall being provided with the groove-like irrigation canals and ditches 8 of the 3rd sand filtration wall 16, with the module for tail water process in described upper computer 7.
The described module for tail water process is used for when needing the tail water process carried out for seawater pond culture, and step is as follows:
Step 1: upper computer just runs the module being used for tail water process sends instruction from throttle valve to PLC, after PLC receives the instruction of this throttle valve, just run gate hoist motor by handling the first frequency transformer, such gate hoist motor just drives gate hoist to open gate, so just from discharge channel, the tail water of seawater pond culture has been imported groove-like irrigation canals and ditches;
Step 2: meanwhile water flow sensor is transferred to water flow data in PLC in real time, and PLC is with being sent in upper computer by this water flow data, upper computer is just compared the amount of water flow data with a tail water process of setting, if water flow data equals the amount of the tail water process set, just run the module being used for tail water process and send the instruction starting closed shutter to PLC, after PLC receives the instruction of this closed shutter, just run gate hoist motor by handling the first frequency transformer, such gate hoist motor just drives gate hoist closed shutter, so just from discharge channel, the tail water of follow-up seawater pond culture is kept isolation with groove-like irrigation canals and ditches,
Step 3: enter the tail water of groove-like irrigation canals and ditches so successively by the first wire cloth group, first sand filtration wall, second wire cloth group, second sand filtration wall, 3rd wire cloth group and the 3rd sand filtration wall carry out adsorption removal the macrobead pollutent in tail water and small particles of pollution thing, then the tail water of adsorption removal macrobead pollutent and small particles of pollution thing enters ecological pool, by first, laterally ecological ditch and first longitudinal ecological ditch enter the second horizontal ecological ditch like this, second longitudinal ecological ditch and the 3rd longitudinally ecological ditch, such second shrimp crab biology laterally in ecological ditch just can draw organic impurity in the tail water of adsorption removal macrobead pollutent and small particles of pollution thing to purify tail water, and the Algae Ecology repairing effect district arranged in second longitudinal ecological ditch can draw the nitrogen in tail water, phosphorus recycling, reach the effect purified water, the shellfish biological filter arranged in other 3rd longitudinal ecological ditch can absorb the suspended particulate in the water body of tail water in a large number, plant plankton and chip, suppress planktonic organism food chain, to control water nutrition, improve water quality and there is important effect, and water quality monitoring (WQM) sensor is sent to water monitoring data in PLC simultaneously, be sent in upper computer by PLC again, upper computer is compared the water monitoring data received in real time with the data meeting sewage drainage standard, if water monitoring data reaches the data meeting sewage drainage standard, upper computer runs the module being used for tail water process and sends the instruction starting wet-pit to PLC, after such PLC receives the instruction starting wet-pit, just handle the second frequency transformer and run rotating machine, rotating machine just drives lift pump that the tail water meeting sewage drainage standard is discharged by water shoot, then return step 1 circulation to perform.The width of the described first horizontal ecological ditch is 5-10m, degree of depth 3.5-4.0m.The width of described first longitudinal ecological ditch is 5-10m, degree of depth 3.5-4.0m.The width of the described second horizontal ecological ditch is 15-20m, degree of depth 3.5-4.0m.The described area for seawater pond culture tail water cycle for the treatment of system accounts for the 10-15% of whole culture zone area.Described groove-like irrigation canals and ditches and the area ratio scope of ecological pool are 1:4-1:3.Described groove-like irrigation canals and ditches and ecological pool are all equipped with end oxygenation aeration system, are beneficial to the decomposition of the organic substance accelerated in cultivation tail water.The width range of the first described sand filtration wall, the second sand filtration wall and the 3rd sand filtration wall is 1.5-2.0 rice.The described profile for seawater pond culture tail water cycle for the treatment of system also can be rectangle, circle or square, described for seawater pond culture tail water cycle for the treatment of Operation system setting below pond culture district water port.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, although the utility model discloses as above with preferred embodiment, but and be not used to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be do not depart from technical solutions of the utility model content, according to technical spirit of the present utility model, within spirit of the present utility model and principle, to any simple amendment that above embodiment is done, equivalent replacement and improvement etc., within the protection domain all still belonging to technical solutions of the utility model.
Claims (9)
1. one kind for seawater pond culture tail water cycle for the treatment of system, it is characterized in that a kind of for seawater pond culture tail water cycle for the treatment of system, comprise the discharge channel for seawater pond culture, the tail end of described discharge channel connects with gate, described gate is connected with the gate hoist with gate hoist motor, described gate hoist motor is connected with the first frequency transformer, the first described frequency transformer is connected with PLC, described PLC is connected with upper computer, the rear portion of described gate is exactly groove-like irrigation canals and ditches, the the first wire cloth group be made up of several wire cloths is provided with in the front portion of described groove-like irrigation canals and ditches, each wire cloth in the first described wire cloth group is provided with biological ball, the water flow sensor that same PLC is connected also is provided with in the front portion of described groove-like irrigation canals and ditches, the rear of the first described wire cloth group is provided with the first sand filtration wall, the water-in of the first described sand filtration wall is towards the first wire cloth group, the rear of the first described sand filtration wall is provided with the second wire cloth group be made up of several wire cloths, each wire cloth in the second described wire cloth group is provided with biological ball, the water outlet of the first described sand filtration wall is towards the second wire cloth group, the second described wire cloth group rear is provided with the second sand filtration wall, the water-in of the second described sand filtration wall is towards the second wire cloth group, the rear of the second described sand filtration wall is provided with the 3rd wire cloth group, each wire cloth in the 3rd described wire cloth group is provided with biological ball, the water outlet of the second described sand filtration wall is towards the 3rd wire cloth group, the outside surface of a sidewall of described groove-like irrigation canals and ditches is connected with ecological pool, and this sidewall is provided with the 3rd sand filtration wall be connected with the 3rd wire cloth group, the water-in of the 3rd described sand filtration wall is towards the 3rd wire cloth group, the water outlet of the 3rd described sand filtration wall is towards ecological pool, described ecological pool comprises with the first connected horizontal ecological ditch of the sidewall of the groove-like irrigation canals and ditches being provided with the 3rd sand filtration wall, described first laterally to arrange the water shoot with lift pump in ecological ditch, lift pump is connected with rotating machine by shaft coupling, described rotating machine is connected with the second frequency transformer, the second described frequency transformer is connected with PLC, water quality monitoring (WQM) sensor is also provided with in described first horizontal ecological ditch, described water quality monitoring (WQM) sensor is also connected with PLC, one end of the longitudinal ecological ditch in front portion same first of the described first horizontal ecological ditch is conducted, and the front portion of the horizontal ecological ditch side of the other end same second of first longitudinal ecological ditch is conducted, there is shrimp crab biological in described second horizontal ecological ditch, with second, longitudinally ecological ditch and the 3rd longitudinal ecological ditch are conducted described second horizontal ecological ditch opposite side, Algae Ecology repairing effect district is provided with in described second longitudinal ecological ditch, shellfish biological filter is provided with in described the 3rd longitudinal ecological ditch, described ecological pool is surrounded by beach face and the described same sidewall being provided with the groove-like irrigation canals and ditches of the 3rd sand filtration wall, with the module for tail water process in described upper computer, one of described water shoot is stretched out ecological pool from pond bottom.
2. according to claim 1 for seawater pond culture tail water cycle for the treatment of system, it is characterized in that the width of the first described horizontal ecological ditch is 5-10m, degree of depth 3.5-4.0m.
3. according to claim 1 for seawater pond culture tail water cycle for the treatment of system, it is characterized in that the width of first described longitudinal ecological ditch is 5-10m, degree of depth 3.5-4.0m.
4. according to claim 1 for seawater pond culture tail water cycle for the treatment of system, it is characterized in that the width of the second described horizontal ecological ditch is 15-20m, dark 3 degree of .5-4.0m.
5. according to claim 1 for seawater pond culture tail water cycle for the treatment of system, it is characterized in that the described area for seawater pond culture tail water cycle for the treatment of system accounts for the 10-15% of whole culture zone area.
6. according to claim 1 for seawater pond culture tail water cycle for the treatment of system, it is characterized in that the area ratio scope of described groove-like irrigation canals and ditches and ecological pool is 1:4-1:3.
7. according to claim 1 for seawater pond culture tail water cycle for the treatment of system, it is characterized in that described groove-like irrigation canals and ditches and ecological pool are all equipped with end oxygenation aeration system.
8. according to claim 1 for seawater pond culture tail water cycle for the treatment of system, it is characterized in that the width range of the first described sand filtration wall, the second sand filtration wall and the 3rd sand filtration wall is 1.5-2.0 rice.
9. according to claim 1 for seawater pond culture tail water cycle for the treatment of system, it is characterized in that the described profile for seawater pond culture tail water cycle for the treatment of system also can be rectangle, circle or square, described for seawater pond culture tail water cycle for the treatment of Operation system setting below pond culture district water port.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520008895.3U CN204434425U (en) | 2015-01-07 | 2015-01-07 | A kind of for seawater pond culture tail water cycle for the treatment of system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520008895.3U CN204434425U (en) | 2015-01-07 | 2015-01-07 | A kind of for seawater pond culture tail water cycle for the treatment of system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104496131A (en) * | 2015-01-07 | 2015-04-08 | 象山红升水产养殖有限公司 | Circulating system for treating aquaculture tail water of seawater pond |
| CN111137989A (en) * | 2020-02-28 | 2020-05-12 | 浙江省环境保护科学设计研究院 | Mariculture wastewater treatment and recycling system and process |
-
2015
- 2015-01-07 CN CN201520008895.3U patent/CN204434425U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104496131A (en) * | 2015-01-07 | 2015-04-08 | 象山红升水产养殖有限公司 | Circulating system for treating aquaculture tail water of seawater pond |
| CN104496131B (en) * | 2015-01-07 | 2016-01-20 | 象山红升水产养殖有限公司 | A kind of for seawater pond culture tail water cycle for the treatment of system |
| CN111137989A (en) * | 2020-02-28 | 2020-05-12 | 浙江省环境保护科学设计研究院 | Mariculture wastewater treatment and recycling system and process |
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