CN109942156A - Sea-farming tail water treatment system and its application method based on biofilter - Google Patents

Sea-farming tail water treatment system and its application method based on biofilter Download PDF

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Publication number
CN109942156A
CN109942156A CN201910324610.XA CN201910324610A CN109942156A CN 109942156 A CN109942156 A CN 109942156A CN 201910324610 A CN201910324610 A CN 201910324610A CN 109942156 A CN109942156 A CN 109942156A
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China
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biofilter
sea
water
pond body
tail water
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CN201910324610.XA
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CN109942156B (en
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陈志伟
陈佛颂
徐瑞娥
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Huizhou Hexin Science And Technology Co Ltd
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Huizhou Hexin Science And Technology Co Ltd
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Abstract

The sea-farming tail water treatment system based on biofilter that present invention discloses a kind of, it includes anaerobic biofilter, aerobic biofilter and back-purge system, the first microbiologic population and the second microbiologic population, backwash of the back-purge system for anaerobic biofilter and aerobic biofilter have been raised and train in first biofilter material of anaerobic biofilter and in the second biofilter material of aerobic biofilter respectively;The application method for the sea-farming tail water treatment system based on biofilter that present invention further teaches a kind of.The application can effectively retain suspended matter and pollutant in sea-farming tail water, remove organic matter, ammonia nitrogen, total nitrogen and total phosphorus in sea-farming tail water, realize the purification discharge of sea-farming tail water, protect the marine environment;Moreover, this system also has adaptable, processing capacity is strong, economical and efficient, effect stability, and energy saving operates the advantages that simple, convenient for promoting.

Description

Sea-farming tail water treatment system and its application method based on biofilter
Technical field
The present invention relates to technology of waste water control field, it is specifically related at a kind of sea-farming tail water based on biofilter Reason system and its application method.
Background technique
In recent years, the fast development of the marine culture characterized by high-density breeding, leads to sea water culture environment Pollution is worsening.Contain feed remaining in artificial seawater breeding process, culturing fish and shrimp class excreta and prolific bacterium The seawater of microorganism is directly discharged into coastal waters, and especially in cultivation close quarters, above-mentioned numerous sea-farming tail water are mutually folded Add discharge, substantially exceed the purification speed of marine environment itself, a large amount of nutriment is contained in these tail water, such as nitrogen, phosphorus, is had Machine object can cause the mass propagation of nearly brit, algae, and Dissolved Oxygen in Water concentration is caused sharply to decline, or even formed and detested There is black and odorous water in oxygen environment.In addition, seawater eutrophication also results in red tide.The seawater quality of deterioration not only can shadow The diversity of marine ecology, the growth and breeding of marine organisms, ocean landscape etc. are rung, and contaminated seawater is pumped to again Marine park will affect the growth and health of artificial breeding fishes and shrimps, even result in the sick mortality of culturing fish and shrimp, make to cultivate A large amount of losses are suffered at family, and being sold to the seafood of numerous citizen, there is also health and safety hidden danger.
It is nutritive salt that the characteristics of sea-farming tail water, which is major pollutants, such as nitrogen class and Phosphorus, is existed simultaneously a certain amount of Suspended matter and dissolved organic matter, have a certain number of bacteriums, microorganism.Nitrogen, phosphorus and the content of organics in waste water are cut down, The pollution problem of sea-farming tail water could fundamentally be solved.
In the research and application of sea-farming tail water processing, certain progress is obtained both at home and abroad, mainly by physical method, change Method and bioanalysis composition.Physical method includes quartzy filtering, active carbon filtering, membrane filtration technique etc..Quartz filtering major function It is suspended matter in water removal, cannot function as independent process sea-farming tail water.Active carbon filtering can be adsorbed organic in water Suspended matter in object, nitrogen, phosphorus and the water that shuts off, but active carbon needs to regenerate or replace, use cost after reaching saturated extent of adsorption It is higher.The membrane filtration techniques such as micro-filtration, ultrafiltration, the suspended matter in the water that can effectively shut off, but the technological investment higher cost, energy consumption and Operating cost is higher, is chiefly used in circulating water culture system, and culturing economic is worth higher aquatic products.Chemical method includes by useless Water treatment agent is added in water, and by its precipitating, floating, redox etc., extra large Organic substance in water, suspended matter, phosphorus etc. are polluted Object removal.The medicament added be easy to cause secondary pollution, and processing cost is higher, is unsuitable for the processing of sea-farming tail water.Ozone Oxidizing process can aoxidize water part organic matter, make that they resolve into small molecule compound by macromolecular compound or mineralising is Carbon dioxide, secondary pollution is few, but ozone dosage is higher, higher operating costs.Bioanalysis is by the new old of microorganism Metabolism is adsorbed water pollutant, is absorbed, is decomposed, is converted, and achievees the purpose that purified water.But sea-farming tail water Salinity is higher, generally up to 35g L-1Left and right, be unsuitable for the existence and growth of microorganism, and in tail water pollutant concentration compared with It is low, it may be not enough to provide enough nutrition to microorganism, influence the eubolism of microorganism.Activated sludge process, sequence batch Formula activated sludge process, upflow anaerobic sludge fluidized bed, anaerobic baffled reactor etc. due to need higher concentration sewage and The sludge of higher concentration is unsuitable for handling sea-farming tail water.It is taken up a large area needed for wetland, plants and safeguard that plant etc. operates Relatively complicated, treatment effect is poor, and marine park soil is more in short supply, therefore, is not also suitable for sea-farming tail generally The processing of water.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provide a kind of sea-farming tail water treatment system based on biofilter and Its application method.
A kind of sea-farming tail water treatment system based on biofilter includes: anaerobic biofilter comprising the first pond Body, the first supporting layer and the first biofilter material;First supporting layer and the first biofilter material are set in the first pond body, and the One biofilter material is located on the first supporting layer;The first microbiologic population has been raised and train in first biofilter material;
Aerobic biofilter is connected to anaerobic biofilter;Aerobic biofilter includes the second pond body, the second supporting layer And second biofilter material;Second supporting layer and the second biofilter material are set to the second pond body, and the second biofilter material is located at On second supporting layer;The second microbiologic population has been raised and train in second biofilter material;And
Back-purge system comprising recoil air-washing system and recoil water wash system;Two wind of recoil air-washing system are washed End is connected to the first pond body and the second pond body respectively, and the wind of two recoil air-washing systems washes end and is located at the first supporting layer And second below supporting layer;Two washing ends of recoil water wash system are connected to the first pond body and the second pond body respectively, and The washing end of two recoil water wash systems is located at below the first supporting layer and the second supporting layer.
It according to an embodiment of the present invention, further include conditioning tank;Conditioning tank respectively with the first pond body and the second pond body Connection.
It according to an embodiment of the present invention, further include grid;Grid is connected to conditioning tank.
It according to an embodiment of the present invention, further include clear water reserviors;Second pond body is connected to by clear water reserviors with conditioning tank.
According to an embodiment of the present invention, the water inlet end of water wash system of recoiling is connected to clear water reserviors.
According to an embodiment of the present invention, anaerobic biofilter further includes the first water distribution system and the first gas distribution system.
According to an embodiment of the present invention, aerobic biofilter further includes the second water distribution system and the second gas distribution system.
A kind of application method of the sea-farming tail water treatment system based on biofilter the following steps are included:
Make and be arranged anaerobic biofilter, aerobic biofilter and back-purge system;
Strain is added respectively at anaerobic biofilter and aerobic biofilter and carries out domestication culture, and forms first micro- life Object group and the second object biocoene;
After the completion of Spawn incubation, sea-farming tail water passes sequentially through anaerobic biofilter and aerobic biofilter carries out only Change processing;
Back-purge system carries out backwash processing to anaerobic biofilter and aerobic biofilter respectively.
According to an embodiment of the present invention, it is carried out respectively at anaerobic biofilter and aerobic biofilter addition strain tame and docile Changing culture includes following sub-step:
Nutrient solution preculture;
The mixed liquor of nutrient solution and sea-farming tail water adapts to cultivate.
According to an embodiment of the present invention, the strain that anaerobic biofilter is added includes hydrolysis acidification bacterium, denitrifying bacterium, detests Anaerobic ammonium oxidation bacterium and polyP bacteria;
The strain that aerobic biofilter is added includes heterotroph, nitrococcus and nitrifier.
Compared with the existing technology, the application passes through the first biofilter material and aerobic biofilter in anaerobic biofilter The second biofilter material in turn out and adapt to the anaerobism of high salt concentration environment, aerobic microbiological group, pass through Physical entrapment, biology The physics, biochemical action such as absorption, absorption, oxidation, synthesis, can effectively retain suspended matter and the pollution in sea-farming tail water Object removes organic matter, ammonia nitrogen, total nitrogen and total phosphorus in sea-farming tail water, realizes the purification discharge of sea-farming tail water, protects Protect marine environment.Moreover, this system also has adaptable, processing capacity is strong, economical and efficient, effect stability, energy saving, The advantages that simple is operated, convenient for promoting.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of sea-farming tail water treatment system of the embodiment one based on biofilter;
Fig. 2 is sea-farming Tail water reuse standard.
Specific embodiment
Multiple embodiments of the invention will be disclosed with schema below, as clearly stated, the details in many practices It will be explained in the following description.It should be appreciated, however, that the details in these practices is not applied to limit the present invention.Also It is to say, in some embodiments of the invention, the details in these practices is non-essential.In addition, for the sake of simplifying schema, Some known usual structures and component will be painted it in the drawings in simply illustrative mode.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention In explaining in relative positional relationship, the situation of movement etc. under a certain particular pose (as shown in the picture) between each component, if should When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being such as related to " first ", " second " in the present invention is used for description purposes only, not especially censure The meaning of order or cis-position, also non-to limit the present invention, the component described just for the sake of difference with same technique term Or operation, it is not understood to indicate or imply its relative importance or implicitly indicates the number of indicated technical characteristic Amount." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one of the features.In addition, each Technical solution between a embodiment can be combined with each other, but must can be implemented as base with those of ordinary skill in the art Plinth will be understood that the combination of this technical solution is not present when conflicting or cannot achieve when occurs in the combination of technical solution, Also not the present invention claims protection scope within.
For that can further appreciate that the contents of the present invention, feature and effect, the following examples are hereby given, and cooperates attached drawing detailed It is described as follows:
Embodiment one
Referring to Fig.1, Fig. 1 is the structural schematic diagram of sea-farming tail water treatment system of the embodiment one based on biofilter. The sea-farming tail water treatment system based on biofilter in the present embodiment includes anaerobic biofilter 1, aerobic biofilter 2 And back-purge system 3.Anaerobic biofilter 1 includes the first pond body 11, the first supporting layer 12 and the first biofilter material 13.The One supporting layer 12 and the first biofilter material 13 are set in the first pond body 11, and the first biofilter material 13 is located at the first supporting layer On 12.Aerobic biofilter 2 is connected to anaerobic biofilter 1.Aerobic biofilter 2 includes the second pond body 21, the second supporting layer 22 and second biofilter material 23.Second supporting layer 22 and the second biofilter material 23 are set to the second pond body 21, and second is raw Object filtrate 23 is located on the second supporting layer 22.Back-purge system 3 includes recoil air-washing system 31 and recoil water wash system 32.Instead Two wind for rushing air-washing system 31 are washed end and are connected to respectively with the first pond body 11 and the second pond body 21, and two recoil air-washing systems 31 wind washes end and is located at 22 lower section of the first supporting layer 12 and the second supporting layer.Two washing ends of recoil water wash system 32 It is connected to respectively with the first pond body 11 and the second pond body 21, and the washing end of two recoil water wash systems 32 is located at first and holds Hold in the palm 22 lower section of layer 12 and the second supporting layer.
By in the first biofilter material 13 of anaerobic biofilter 1 and the second biofilter material 23 of aerobic biofilter 2 The anaerobism for adapting to high salt concentration environment, aerobic microbiological group are inside turned out, Physical entrapment, biological adsorption, absorption, oxygen are passed through The physics, biochemical action such as change, synthesis, can effectively retain the suspended matter and pollutant in sea-farming tail water, and removal seawater is supported Organic matter, ammonia nitrogen, total nitrogen and the total phosphorus in tail water are grown, the purification discharge of sea-farming tail water is realized, protects the marine environment.And And this system also has adaptable, processing capacity is strong, economical and efficient, effect stability, energy saving, and it is excellent that operation is simple etc. Point, convenient for promoting.
Again referring to Fig.1, further, the sea-farming tail water treatment system based on biofilter in the present embodiment further includes Conditioning tank 4.Conditioning tank 4 is connected to the first pond body 11 and the second pond body 21 respectively.Conditioning tank 4 is for adjusting anaerobic biofilter The water inlet of 1 the first pond body 11 and 21 water outlet proportion of the second pond body of aerobic biofilter 2.In specific application, conditioning tank 4 can On the ground or underground, preferred settable conditioning tank 4 is in underground for setting.
Again referring to Fig.1, further, the sea-farming tail water treatment system based on biofilter in the present embodiment is also wrapped Include grid 5.Grid 5 is connected to conditioning tank 4.Sea-farming tail water to be processed first passes through grid 5, laggard using conditioning tank 4 Enter the first pond body 11 to anaerobic biofilter 1.Grid 5 is avoided for hindering big suspended matter to enter in subsequent system Big suspended particle clogging water pump, pipeline and filter tank etc..
Again referring to Fig.1, further, the sea-farming tail water treatment system based on biofilter in the present embodiment is also wrapped Include clear water reserviors 6.Second pond body 21 of aerobic biofilter 2 is connected to by clear water reserviors 6 with conditioning tank 4.Clear water reserviors 6 are for keeping in the Water outlet in two pond bodies 21, and sterilizing and purifying is carried out, then the rear clear water of sterilizing and purifying, be transmitted to conditioning tank 4, conditioning tank 4 is again Adjust the first pond body 11 water inlet and the second pond body 21 water outlet, in this way, by conditioning tank 4, the first pond body 11, the second pond body 21 with And clear water reserviors 6 be sequentially communicated be equipped with, formation circulate water, to save resource.Preferably, it is flowed by grid 5 Water mixed according to the ratio of 1:1 to 1:3 in sea-farming tail water and clear water reserviors 6 the inflow conditioning tank 4 of conditioning tank 4 Afterwards, it is flowed into the first pond body 11.In addition, the extra water of clear water reserviors 6 can direct outlet.In specific application, clear water reserviors 6 can be set It sets on the ground or underground, preferred settable clear water reserviors 6 are on the ground;When clear water reserviors 6 are placed on the ground, when conditioning tank 4 is placed in underground, Because of topography gravity factor, the water outlet of clear water reserviors 6 can be flow to certainly in conditioning tank 4.
Preferably, sterilizing and purifying can carry out disinfection to water outlet by the way that ultraviolet disinfecting is arranged in clear water reserviors 6.
Multiple further, the water inlet end of recoil water wash system 32 is connected to clear water reserviors 6 referring to Fig.1, so that recoil washing system The water that circulates of clear water reserviors 6 can be used in the backwashing water of system 32, saves resource.
It is multiple referring to Fig.1, further, anaerobic biofilter 1 further includes the first water distribution system (not shown) and the One gas distribution system (not shown).First water distribution system is used to adjust the water flow in the first pond body 11 of anaerobic biofilter 1 Flow direction, the first gas distribution system are then used to adjust the air flow direction in the first pond body 11.In specific application, the water of the first pond body 11 Stream flow direction can be up-flow or drop streaming, it is preferred that the flow direction of the first pond body 11 is set as up-flow.Specifically, first Water distribution system is made of water pump and water-supply-pipe, and the water of bottom in the first pond body 11 is made by the collective effect of water pump and water-supply-pipe The top flowing for flowing to the first pond body 11, forms up-flow;First gas distribution system is made of blower and appendix, by blower and The collective effect of appendix flows air-flow in the first pond body 11.When specific setting, the first water distribution system may be provided at the The either above or below of one supporting layer 12, it is preferred that the lower end of the first pond body 11, the first gas distribution system is arranged in the first water distribution system The lower section of the first supporting layer 12 is arranged in system.
Aerobic biofilter 2 further includes the second water distribution system (not shown) and the second gas distribution system 24.Second cloth Water system is used to adjust the flow direction in the second pond body 21 of aerobic biofilter 2, and the second gas distribution system is then used to adjust the Air flow direction in two pond bodies 21.In specific application, the flow direction of the second pond body 21 can be up-flow or drop streaming, preferably , the flow direction of the second pond body 21 is set as drop streaming.Specifically, the second water distribution system is made of water pump and water-supply-pipe, lead to The collective effect for crossing water pump and water-supply-pipe makes the water flow of 21 inner top of the second pond body towards the flows of the second pond body 21, shape Cheng Jiangliu;Alternatively, water flow is promoted to by water pump and water-supply-pipe the top of the second pond body 21, then in the effect of gravitional force Under, drop stream is formed on the water flow meeting automatic stream bottom at 21 top of the second pond body.Second gas distribution system 24 is by Aeration fan 241 and defeated Tracheae 242 forms, and by the collective effect of Aeration fan 241 and appendix 242 air-flow is flowed in the second pond body 21, excellent Choosing, gas transmission control valve 243 is provided on appendix 242 to control the on-off of appendix 242.When specific setting, the second cloth Water system may be provided at the either above or below of the second supporting layer 22, it is preferred that the second water distribution system is arranged in the second pond body 11 Upper end, the lower section of the second supporting layer 22 is arranged in the second gas distribution system 24.
Again referring to Fig.1, further, the sea-farming tail water treatment system based on biofilter in the present embodiment is also wrapped Include pipe-line system 100.Pipe-line system 100 is connect with each portion of the disposed of in its entirety system in the present embodiment respectively, for controlling water Stream or air-flow disposed of in its entirety system flowing.
Specifically, the side that grid 5 is connected to sea-farming tail water is provided with tail water water inlet pipe 101 and is set to tail water The tail water water inlet control valve door 102 of water inlet pipe 101.Sea-farming tail water enters grid 5 by tail water water inlet pipe 101, and tail The on-off of water water inlet control valve 102 pairs of tail water water inlet pipes 101 of door controls.
The other side of grid 5 is connected to by the first connection water pipe 103 with conditioning tank 4, is arranged on conditioning tank connection water pipe 103 There is the first connection conduit control valve door 104, passes through the logical of first connection conduit control valve door 104 control the first connection water pipe 103 It is disconnected.
Conditioning tank 4 is connected to by the second connection water pipe 105 with the first pond body 11, is provided with and is detested on the second connection water pipe 105 Oxygen biofilter elevator pump 106 and two second connection conduit control valve doors 107, two second connection conduit control valve doors 107 are located at the two sides of anaerobic biofilter elevator pump 106, and anaerobic biofilter elevator pump 106 is used for the water flow of conditioning tank 4 Power when the first pond body 11 is flowed into, two second connection conduit control valve doors 107 are used to control the logical of the second connection water pipe 105 It is disconnected.
Conditioning tank 4 connects water pipe 108 by third and is connected to clear water reserviors 6, is provided with clear water reserviors on third connection water pipe 108 Conduit control valve door 110 is connect with conditioning tank reflux pump 109 and two thirds, two thirds connect conduit control valve door 110 It is located at the two sides of clear water reserviors Yu conditioning tank reflux pump 109, clear water reserviors and conditioning tank reflux pump 109 are for providing water flow from clear Pond 6 flows to power when conditioning tank 4, and two third connection conduit control valve doors 110 are used to control third connection water pipe 108 On-off.
First pond body 11 is connected to by the 4th connection water pipe 111 with the second pond body 21, is provided on the 4th connection water pipe 111 Aerobic biofilter elevator pump 112 and two the 4th connection conduit control valve doors 113, two the 4th connection conduit control valve doors 113 are located at the two sides of aerobic biofilter elevator pump 112, and aerobic biofilter elevator pump 112 is for providing the first pond body 11 water flows enter power when the second pond body 21, and two the 4th connection conduit control valve doors 113 are for controlling the 4th connection water pipe 111 on-off.
Second pond body 21 is connected to by the 5th connection water pipe 114 with clear water reserviors 6, and the 5th connects and be provided with the on water pipe 114 The water outlet of five connection conduit control valve doors 115, the second pond body 21 is flowed into clear water reserviors 6 by the 5th connection water pipe 114, and the 5th connects The on-off of the 5th connection water pipe 114 of the control of water receiving tube control flap 115.
It is multiple that further, the pond body material of the first pond body 11 can be used concrete, steel referring to Fig.1, glass reinforced plastic and PVC etc. needs to select suitable material according to specific environment.The shape of first pond body 11 can pick up square, cuboid or Person's cylindrical body etc. can require to be selected according to actual environment.First supporting layer 12 is set in the first pond body 11 close to bottom Position the first biofilter material 13 is carried on first supporting layer 12 so that isolating two spaces in the first pond body 11 so that First biofilter material 13 is located at the upper space of the first pond body 11, specifically when setting, is equipped on the first supporting layer 12 and uniformly divides The filter of cloth, enables the hole of water flow and air-flow by filter, and the first biofilter material 13 can not pass through, and can play certain Filtration.Steel plate, concrete slab or glass epoxy can be used in the first supporting layer 12 in the present embodiment.
First biofilter material 13 includes the first bottom filtrate 131 and the first upper layer filtrate 132.First bottom filtrate 131 The cobblestone or glass-ceramic ring of 5mm is greater than using the biggish filtrate of partial size, such as partial size, in specific setting, the first bottom The height in the first pond body 11 is arranged in 0.3m between 1m in filtrate 131.First upper layer filtrate 132 uses the lesser filter of partial size Material, such as haydite, medical stone, glass-ceramic ring, coral sand, active carbon, zeolite or volcanic rock of the partial size between 2-5mm, the The height in the first pond body 11 is arranged in 3m between 9m in one upper layer filtrate 132.
Again referring to Fig.1, further, concrete, steel, glass reinforced plastic and PVC etc., according to tool can be used in the second pond body 21 Body environment needs to select suitable material, and the shape of the second pond body 21 can pick up square, cuboid or cylindrical body etc., can root Factually border environmental requirement is selected.
Second supporting layer 22 is set to the position in the second pond body 21 close to bottom, so that isolating two in the second pond body 21 A space carries the second biofilter material 23 on the second supporting layer 22, so that the second biofilter material 23 is located at the second pond body 21 Upper space specifically when setting, is equipped with equally distributed filter on the second supporting layer 22, water flow and air-flow is enabled to pass through filter Hole on head, and the second biofilter material 23 can not pass through, and can play certain filtration.The second support in the present embodiment Steel plate, concrete slab or glass epoxy can be used in layer 22.
Second biofilter material 23 includes the second bottom filtrate 231 and the second upper layer filtrate 232.Second bottom filtrate 231 The cobblestone or glass-ceramic ring of 5mm is greater than using the biggish filtrate of partial size, such as partial size, in specific setting, the second bottom The height in the second pond body 21 is arranged in 0.3m between 1m in filtrate 231.Second upper layer filtrate 232 uses the lesser filter of partial size Material, such as haydite, medical stone, glass-ceramic ring, coral sand, active carbon, zeolite or volcanic rock of the partial size between 2-5mm, the The height in the second pond body 21 is arranged in 3m between 9m in two upper layer filtrates 232.
In practical applications, the volume of the first pond body 11 is greater than the volume of the second pond body 21, it is preferred that the first pond body 11 Volume is 1.5-4 times of 21 volume of the second pond body.
It is multiple referring to Fig.1, further, recoil air-washing system 31 includes that backwash blower 311, recoil wind wash supervisor 312, the One recoil wind wash be in charge of 313, second recoil wind wash be in charge of 314, first backwash wind pipe control valve door 315, second backwash wind Tube control flap 316 and third backwash wind pipe control valve door 317.Supervisor is washed in the one end and recoil wind for backwashing blower 311 312 one end connection after the other end that recoil wind washes supervisor 312 shunts, washes with the first recoil wind be in charge of 313 and second respectively Recoil wind wash be in charge of 314 one end connection, the first recoil wind, which is washed, to be in charge of 313 other end and is connected to the first pond body 11, and is located at The lower section of first supporting layer 12, the second recoil wind, which is washed, to be in charge of 314 other end and is connected to the second pond body 21, and positioned at the second support The lower section of layer 22.First backwash wind pipe control valve door 315 is set to recoil wind and washes on supervisor 312, is used to control recoil wind and washes The on-off of supervisor 312, the second backwash wind pipe control valve door 316 are set to the first recoil wind and wash and is in charge of on 313, are used to control the One recoil wind wash be in charge of 313 on-off, third backwash wind pipe control valve door 317 is set to the second recoil wind and washes and is in charge of on 314, For control second recoil wind wash be in charge of 314 on-off.
The water wash system 32 that recoils includes backwash pump 321, the first backwashing water supervisor the 322, second backwashing water supervisor 323, the first backwashing water is in charge of the 324, second backwashing water and is in charge of the 325, first backwashing water tube control flap 326, second instead Wash tub pipe control valve 327 and third backwashing water tube control flap 328.One end of backwash pump 321 is anti-with first Flushing water supervisor 322 one end connection, the first backwashing water supervisor 322 the other end shunt after, respectively with the first backwashing water Be in charge of 324 and second backwashing water be in charge of 325 one end connection, the first backwashing water is in charge of 324 other end and the first pond Body 11 is connected to, and is located at the lower section of the first supporting layer 12, and the second backwashing water is in charge of 325 other end and the second pond body 21 connects It is logical, and it is located at the lower section of the second supporting layer 22, one end of the other end of backwash pump 321 and the second backwashing water supervisor 323 The other end of connection, the second backwashing water supervisor 323 is connected to clear water reserviors 6.First backwashing water tube control flap 326 is set to the One backwashing water is in charge of on 324, is used to control the on-off that the first backwashing water is in charge of 324.Second backwash conduit control valve Door 327 is set to the second backwashing water and is in charge of on 325, is used to control the on-off that the second backwashing water is in charge of 325, third backwash Conduit control valve door 328 is set on the second backwashing water supervisor 32, is used to control the on-off of the second backwashing water supervisor 32.
It is understood that suspended matter is by anaerobic biofilter 1 in sea-farming tail water in the operational process of this system And after aerobic biofilter 2 retains, it can be accumulated in the first biofilter material 13 and 23 surface of the second biofilter material and gap.The After microorganism in one biofilter material 13 and the second biofilter material 23 absorbs the nutriment in tail water, breeding can be grown into Aging, and accumulated in filter material surface and gap.The suspended matter and microorganism in filter material surface and gap are in the process of running, right Very important effect is played in retention tail water suspended matter and removal Wastewater Pollutant, but is running to certain time limit, is suspended Object and microbes block biofilter, or even will appear sludge and suspended matter hardened phenomenon, cause, water outlet excessive into water resistance Pollutant is more, needs to clean biofilter.It can specifically be judged according to hydraulic pressure, when to effectively cause hydraulic pressure excessive for blocking When, filter tank can be backwashed.
Specific backwash process is as follows: firstly, opening backwash blower 311 runs 5-10min, compressed air enters the The bottom of one pond body 11 perhaps the second pond body 21 is entered in the first biofilter material 13 or the second biofilter material 23 by filter, The suspended matter retained for a long time in pond body and microorganism are stirred energetically, them is loosened from filtrate, falls off, and are mixed in water. Then, start backwash pump 321, backwashing water passes through filter from the bottom for entering the first pond body 11 or the second pond body 21 Into the first biofilter material 13 or the second biofilter material 23, in conjunction with compressed air, air water connection rushes 5-20min, makes to loosen, take off The suspended matter fallen and microorganism are discharged with water from effluent weir, specifically, the water that backwash pump 321 extracts clear water reserviors recoils It washes, reaches recycling for water, save resource.
Preferably, pipe-line system 100 further includes the 6th connection water pipe 116 and the 6th connects conduit control valve door 117, the One end of six connection water pipes 116 is connected to grid 5, and the other end is divided into two sub- water pipes 1161, and two sub- water pipes 1161 are distinguished It is connected to the first pond body 11 and the second pond body 21, the 6th connection conduit control valve door 117 is set to the 6th connection water pipe 116 One end that one end is connected to grid 5 is respectively arranged with sub- aqueduct valve 1162 on each sub- water pipe 1161, passes through the 6th connection water The on-off of the 6th connection water pipe 116 of the control of tube control flap 117, controls the logical of sub- water pipe 1161 by sub- aqueduct valve 1162 It is disconnected.When being backwashed, the 6th connection conduit control valve door 117 and one of aqueduct valve 1162 are opened, recoil washing The draining of the first pond body 11 or the second pond body 21 of the backwash of system 32 passes through sub- water pipe 1161 and the 6th connection water respectively It is emitted into 5 front of grid after pipe 116, is then mixed with sea-farming tail water, achievees the purpose that recycle.For example, first The sub- aqueduct valve 1162 on the sub- water pipe 1161 being connected to the first pond body 11 is opened, then opens the 6th connection conduit control valve door 117, the backwash of the first pond body 11 of anaerobic biofilter 1 can be completed in operation recoil water wash system 32.
Embodiment two
The application method of sea-farming tail water treatment system in the present embodiment based on biofilter, based in embodiment The sea-farming tail water treatment system based on biofilter sea-farming tail water processing method, specifically include following step It is rapid:
Make and be arranged anaerobic biofilter 1, aerobic biofilter 2 and back-purge system 3.It is correspondingly arranged grid simultaneously 5, conditioning tank 4, clear water reserviors 6 and pipe-line system 100 are formed at the sea-farming tail water based on biofilter in embodiment one The preferred embodiment of reason system.
Strain is added respectively at anaerobic biofilter 1 and aerobic biofilter 2 and carries out domestication culture, and it is micro- to form first Biocoene and the second object biocoene.Specifically, strain is added to the first biofilter material 13 of the first pond body 21 and In second biofilter material 23 of two pond bodies 22.
It is worth noting that in general sea-farming tail water, including following component: suspended matter, organic matter, ammonia nitrogen, Total nitrogen and total phosphorus, wherein suspended matter is aquatic products excreta, residual feed or microorganism in aquaculture pond, and organic concentration is 10-100mg L-1, ammonia nitrogen concentration is 1-20mg L-1, total nitrogen concentration is 1-22mg L-1, total phosphorus concentration is 0.2-5mg L-1, when It can also be so other concentration, and disobey above-mentioned concentration and be limited.The salinity of sea-farming tail water is very high, and salt content is up to 30- 40g L-1, so needing that the strain for adapting to survive under high salt concentration environment is selected to carry out domestication culture when cultivating strain.Institute It is extremely important with the selection of strain, need to select not only to adapt to the pollutant in hypersaline environment, but also energy high-efficient purification ocean tail water. In the present embodiment, the strain being added in the first biofilter material 13 of anaerobic biofilter 1 includes hydrolysis acidification bacterium, denitrification Bacterium, anaerobic ammonia oxidizing bacteria, polyP bacteria and methanogen;The strain being added in second biofilter material 23 of aerobic biofilter 2 Including heterotroph, nitrococcus and nitrifier, above-mentioned strain is the microorganism for adapting to hypersaline environment.Mentioned microorganism for Pollutant in sea-farming tail water has efficient purified treatment effect, and can survive under high salt concentration environment.Specifically, It can be obtained from sewage treatment plant.
Specific strain domestication culture needs to include following sub-step:
Nutrient solution preculture.Although the strain of selection can survive under hypersaline environment, it needs an adaptation process, It can not directly be raised and train in hypersaline environment, need first to carry out preculture among nutrient solution, increased the quantity of microorganism and fit Ying Xing.Nutrient solution raw materials include glucose, starch, flour, ammonium chloride and dipotassium hydrogen phosphate, are dissolved into battalion in specific application The addition of agent is supported into filtrate, wherein following concentration may be selected in the glucose, ammonium chloride and dipotassium hydrogen phosphate of Major Nutrient agent: Concentration of glucose is 30-200mg L-1, ammonium chloride concentration be 5-20mg L-1, dipotassium hydrogen phosphate concentration is 0.5-5mg L-1.Tool The mode that continuum micromeehanics may be selected in body training method is cultivated, and nutrient solution is in anaerobic biofilter 1 and aerobic biofilter 2 In residence time between 1-24h, in Initial stage of culture, micro organism quantity is less, and flow of inlet water is smaller, and with microbe quantity Amount increases, and is gradually increased flow of inlet water.
The mixed liquor of nutrient solution and sea-farming tail water adapts to cultivate.While micro organism quantity increases, culture water inlet In need to be stepped up sea-farming tail water so that microorganism gradually adapts to the hypersaline environment of sea-farming tail water, and gradual Increase the ratio of sea-farming tail water, finally with the nutrient solution of sea-farming tail water substitution human configuration, makes microorganism in filter tank It can perform its own function, complete entire domestication incubation.Entire culture acclimation period specifically may be used between 1-4 months Depending on the growth of microorganism adaptation situation, it is not limited according to this, for example, raising and train the period is 4 months, it can be pre- by nutrient solution After cultivating two weeks, then increased total accounting of sea-farming tail water 10% with every 10 days, finally replaced with sea-farming tail water For nutrient solution.Domestication culture gradually is carried out to microorganism using nutrient solution and sea-farming tail water, and it is with high salt dense to turn out adaptation Anaerobism, the aerobic microbiological group for spending environment, can effectively remove dirty Organic substance in water, ammonia nitrogen, total nitrogen, total phosphorus and suspended matter.
After the completion of Spawn incubation, sea-farming tail water passes sequentially through anaerobic biofilter 1 and aerobic biofilter 2 carries out Purified treatment.The entire purification process of processing system is as follows:
Under the action of pipe-line system 100, sea-farming tail water passes through grid 5, conditioning tank 4, anaerobic biofilter 1 according to this The first pond body 11, the second pond body 21 of aerobic biofilter 2 and clear water reserviors 6, the water sections of clear water reserviors 6 returns to conditioning tank 4, It is combined with the raw water of sea-farming tail water, for recirculation flow to the first pond body 11 of anaerobic biofilter 1, the seawater for purifying completion is logical Cross the discharge of clear water reserviors 6.
Specifically, by containing certain density organic matter, ammonia nitrogen, total phosphorus in the sea-farming tail water of grid 5 and hanging Floating object etc., in the water outlet of the second pond body 21 of aerobic biofilter 2 containing the relatively low organic matter of concentration, nitrate nitrogen and Nitrite nitrogen is drawn by the water outlet of the sea-farming tail water of grid 5 and the second pond body 21 after the mixing of conditioning tank 4 Into the first pond body 11 of anaerobic biofilter 1, the preferred mixed proportion of the two in 1:1 between 3:1, specifically can be according to reality Depending on situation, it is not limited according to this.Under the anaerobic environment of the first pond body 11, in hydrolysis acidification bacterium and methanogen as master Generation organic matter decomposes the reaction that macromolecular is small molecule under the action of leading strain;In effect of the denitrifying bacterium as leading strain Nitrate nitrogen, is converted into nitrogen in the presence of organic matter by lower generation anti-nitration reaction, and it is poly- concurrently to give birth to anaerobic denitrifying Phosphorus reaction removes total phosphorus in water removal;Occur under the action of anaerobic ammonia oxidizing bacteria is as leading strain Anammox reaction and Nitrous acid and ammonia nitrogen are combined production nitrogen by the poly- phosphorus reaction of anaerobic denitrifying;First bottom filtrate 131 and the first upper layer simultaneously The Physical entrapment of filtrate 132 and suction-operated, there are also the effect of microorganism retention and metabolism absorb a part of organic matter, Nitrogen, phosphorus;In addition, to have larger molecular organics to be converted into small molecule in the case where anaerobic bacteria is decomposed organic for a part of organic matter in tail water Object, a part of organic matter are consumed as the carbon source of anti-nitration reaction.Anaerobic environment in the present embodiment is expressed as dissolved oxygen and exists 0-0.2mg L-1Between.In specific application, tail water clarification time of the sea-farming tail water in the first pond body 11 is preferably in 1- 10h specifically can be determined according to actual needs, and not be limited according to this.
The water inlet of second pond body 21 of aerobic biofilter 2 is the water outlet of the first pond body 11 of anaerobic biofilter 1, in Contain organic matter, ammonia nitrogen, total nitrogen and total phosphorus.Heterotroph and nitrifier occupy advantage in second pond body 21, can effectively remove tail Biodegradable organic in water, ammonia nitrogen and total phosphorus;Most ammonia-nitrogen can be converted into nitrate nitrogen by nitrifier, nitrococcus, Nitrite nitrogen;Second bottom filtrate 231 and the second upper layer filtrate 232 are wrapped up by biomembrane, from outside to inside from aerobic environment Gradually change to anaerobic environment, synchronous nitration and denitrification reaction occurs, removes fraction total nitrogen;In addition, bacteria metabolism Effect absorbs a part of organic matter, nitrogen, phosphorus.In specific application, in the second pond body 21 dissolved oxygen general control in 1-5mg L-1 Between, to maintain aerobic environment, dissolved oxygen is not limited to concentrations above according to actual needs;Tail water stops purification in second pond body 21 Time is generally not limited to the above hydraulic detention time between 1-24h according to actual needs.
Back-purge system 3 carries out backwash processing to anaerobic biofilter 1 and aerobic biofilter 2 respectively.In system Overall operation for a period of time after, need periodically to be backwashed, in order to avoid residual, this mechanism is in example 1 in detail Description, details are not described herein again.
Preferably, in the specific application process, it when sea-farming tail water pollutant concentration is lower, can be supported with converting ocean The operational mode of tail water treatment system is grown, to save the energy, reduces operating cost.One of situation is, when COD concentration exists 30mg L-1Hereinafter, ammonia nitrogen concentration is in 1.5mg L-1Hereinafter, inorganic nitrogen concentration is in 2mg L-1Hereinafter, total phosphorus concentration is in 0.3mg L-1 When following, at this moment the concentration of COD and ammonia nitrogen is relatively high, and the concentration of total phosphorus and inorganic nitrogen is relatively low, can be clear using stopping The water in pond 6 flows back into the operational mode of conditioning tank 4, i.e., the clear water reserviors and conditioning tank being arranged on closing third connection water pipe 108 Reflux pump 109 and two thirds connect conduit control valve door 110, reduce processing water, and then reduce energy consumption.At this point, detesting First pond body 11 of oxygen biofilter 1 is connected with the second pond body 21 of aerobic biofilter 2, and the water outlet of the second pond body 21 does not flow back To the first pond body 11, COD, ammonia nitrogen, total phosphorus and suspended matter can still be reached and are effectively treated, especially aerobic biofilter 2 Second pond body 21 is more obvious to the treatment effect of COD and ammonia nitrogen, so that the water outlet of the first pond body 11 and the second pond body 21 meets Discharge standard, at the same again can less processing water, to save energy consumption.Specific discharge standard can refer to Fig. 2, and Fig. 2 is sea-farming Tail water reuse standard, the standard are formulated in sea-farming Tail water reuse draft standard for comment from national correlation department.
Another situation is that when COD concentration is in 25mg L-1Hereinafter, ammonia nitrogen concentration is in 0.5mg L-1Hereinafter, inorganic nitrogen is dense Degree is in 2mg L-1Hereinafter, total phosphorus concentration is in 0.3mg L-1It, can be using the second pond body for stopping aerobic biofilter 2 when following The aeration of second gas distribution system 24 in 21, so that become anaerobic environment in the second pond body 21, the first pond body 11 and the second pond body 21 Form two anaerobic biofilter cascaded structures, in two concatenated situations of anaerobic biofilter, to COD, total phosphorus, total nitrogen, Suspended matter still can be carried out effective purified treatment, and after purified treatment, water outlet is meeting the sea-farming tail water one in Fig. 2 While grade and secondary discharge standard, the energy is saved.Meanwhile the water that can also stop clear water reserviors 6 at this moment flows back into conditioning tank 4, It closes the clear water reserviors being arranged on third connection water pipe 108 and connect water pipe control with conditioning tank reflux pump 109 and two thirds Valve 110, is further reduced energy consumption, reduces the processing water of system, reduces processing cost.
By the above method, NITROGEN IN LOW CONCENTRATION, phosphorus recycling, organic matter and suspended matter high concentration saliferous sea-farming tail Water can pass through Physical entrapment, biological adsorption, suction in the microbiologic population of biomembrane and filtrate gap by filter material surface It receives, oxidation, physics, biochemical action, the suspended matter in effectively catching tail water such as synthesis effectively remove dirty water pollutant.In addition, also With adaptable, processing capacity is strong, economical and efficient, effect stability, and energy and land saving operates the advantages that simple.
Embodiment three
The present embodiment and embodiment two the difference is that, in specific application, conditioning tank 4 is arranged to a volume and is 1m × 1m × 1m square pond body.It is 1m × 1m × 4.5m that first pond body 11 of anaerobic biofilter 1, which is arranged to a volume, Cuboid pond body.In 11 in first pond body of anaerobic biofilter 1, with cobblestone, glass-ceramic ring for the first bottom filtrate 131, height is set as 0.3m, and the first bottom filtrate 131 fills 3-5mm haydite above, as the first upper layer filtrate 132, Height is 3m.It is 0.7m × 0.7m × 3.8m cuboid pond that second pond body 21 of aerobic biofilter 2, which is arranged to a volume, Body.In second pond body 21 of aerobic biofilter 2, with cobblestone, glass-ceramic ring for the second bottom filtrate 231, height is arranged For 0.3m, filling 3-5mm haydite is highly set as 2.7m as the second upper layer filtrate 232 to the second bottom filtrate 231 above.Clearly Pond 6 is that a volume is 1m × 1m × 1m square pond body.Sea-farming tail water salinity is 35-38g L-1, chemical oxygen demand Measure concentration 4.9mg L-1Ammonia nitrogen concentration 0.268mg L-1, nitrite nitrogen 0.611mg L-1, nitrate nitrogen 0.110mg L-1, always Nitrogen concentration 1.1mg L-1, total phosphorus concentration 0.512mg L-1.Anaerobic biofilter 1,2 strain of aerobic biofilter are derived from processing tool There is the sewage treatment plant of the sewage of certain salinity, and carry out domestication culture using nutrient solution and sea-farming tail water, until complete It is complete to adapt to sea-farming tail water.It is 1.1-2.1mg L that aerobic biofilter 2, which is discharged COD concentration, at this time-1, ammonia nitrogen concentration For 0.05-0.11mg L-1, nitrate nitrogen concentration 0.47-0.76mg L-1, nitrite nitrogen concentration 0.11-0.45mg L-1, always Nitrogen concentration 0.61-1.02mg L-1, total phosphorus concentration 0.07-0.10mg L-1, the water outlet of aerobic biofilter 2 is with tail water in 1:1 ratio It is mixed in conditioning tank 4.1 dissolved oxygen of anaerobic biofilter is controlled in 0mg L-1, hydraulic detention time 1-5h.In hydrolysis acidification Bacterium, methanogen, denitrifying bacterium, anaerobic ammonia oxidizing bacteria exist and play under operative condition, and larger molecular organics of decomposing are The physics of small organic molecule reaction, anti-nitration reaction, Anammox reaction, bacteria metabolism effect and filtrate Retention and microorganism adsorption effect, can partially reduce anaerobic biofilter 1 water outlet COD, ammonia nitrogen, total nitrogen, total phosphorus and Concentration of suspension.The water outlet COD concentration of anaerobic biofilter 1 is 1.5-2.5mg L-1, ammonia nitrogen concentration 0.08- 0.15mg L-1, nitrate nitrogen concentration 0.21-0.41mg L-1, nitrite nitrogen concentration 0.20-0.45mg L-1, total nitrogen concentration 0.49-1.03mg L-1, total phosphorus concentration 0.07-0.12mg L-1.The water outlet of anaerobic biofilter 1 enters aerobic biofilter 2.It is good 2 dissolved oxygen of oxygen biofilter is controlled in 1-5mg L-1Between, hydraulic detention time 1-3h.In heterotrophic bacteria abundant, nitrifier Under the conditions of existing, COD and ammonia nitrogen are greatly reduced, and water outlet COD concentration is 1.1-2.1mg L-1, ammonia nitrogen is dense Degree is 0.05-0.11mg L-1, nitrate nitrogen concentration 0.47-0.76mg L-1, nitrite nitrogen concentration 0.11-0.45mg L-1, Total nitrogen concentration 0.61-1.02mg L-1, total phosphorus concentration 0.07-0.10mg L-1
Example IV
The present embodiment and embodiment two the difference is that, in specific application, conditioning tank 4 be a volume be 1m × The cuboid pond body of 1m × 2m.It is 2m × 2m × 4.5m length that first pond body 11 of anaerobic biofilter 1, which is arranged to a volume, Cube pond body.It is the first bottom filtrate with cobblestone, glass-ceramic ring in 11 in first pond body of anaerobic biofilter 1 131, height is set as 0.3m, and filling 3-5mm haydite is high as the first upper layer filtrate 132 above for the first bottom filtrate 131 Degree is 3m.It is 1m × 1m × 3.8m cuboid pond body that second pond body 21 of aerobic biofilter 2, which is arranged to a volume,.It is aerobic 21 in second pond body of biofilter 2, with cobblestone, glass-ceramic ring for the second bottom filtrate 231, it is highly set as 0.3m, For filling 3-5mm haydite as the second upper layer filtrate 232, height is set as 2.7m to second bottom filtrate 231 above.Clear water reserviors 6 Be a volume be 1m × 1m × 2m cuboid pond body, be connected by water pipe with conditioning tank.Sea-farming tail water salinity is 35- 38g L-1COD concentration 4.91mg L-1, ammonia nitrogen concentration 0.268mg L-1, nitrite nitrogen 0.611mg L-1, nitrate Nitrogen 0.110mg L-1, total nitrogen concentration 1.1mg L-1, total phosphorus concentration 0.512mg L-1.Anaerobic biofilter 1, aerobic biofilter 2 Strain is derived from the sewage treatment plant that processing has the sewage of certain salinity, and is carried out using nutrient solution and sea-farming tail water tame and docile Change culture, until adapting to sea-farming tail water completely.It is 0.94- that aerobic biofilter 2, which is discharged COD concentration, at this time 2.0mg L-1, ammonia nitrogen concentration is 0.04-0.10mg L-1, nitrate nitrogen concentration 0.38-0.68mg L-1, nitrite nitrogen concentration 0.10-0.38mg L-1, total nitrogen concentration 0.48-0.96mg L-1, total phosphorus concentration 0.05-0.10mg L-1.Aerobic biofilter 2 goes out Water and tail water are mixed in 1:1 ratio in conditioning tank.1 dissolved oxygen of anaerobic biofilter is controlled in 0mg L-1, hydraulic detention time is 2-10h.In the case where hydrolysis acidification bacterium, methanogen, denitrifying bacterium, anaerobic ammonia oxidizing bacteria exist and play operative condition, occur to divide Larger molecular organics are solved as small organic molecule reaction, anti-nitration reaction, Anammox reacts, and bacteria metabolism is made With and filtrate Physical entrapment and microorganism adsorption effect, can partially reduce anaerobic biofilter water outlet COD, Ammonia nitrogen, total nitrogen, total phosphorus and concentration of suspension.The water outlet COD concentration of anaerobic biofilter 1 is 1.1-2.0mg L-1, ammonia Nitrogen concentration is 0.07-0.14mg L-1, nitrate nitrogen concentration 0.18-0.38mg L-1, nitrite nitrogen concentration 0.16-0.39mg L-1, total nitrogen concentration 0.43-0.91mg L-1, total phosphorus concentration 0.06-0.10mg L-1.The water outlet of anaerobic biofilter 1 enters aerobic life Object filter tank 2.2 dissolved oxygen of aerobic biofilter is controlled in 1-5mg L-1Between, hydraulic detention time 1-3h.In different oxygen abundant Bacterium, under the conditions of nitrifier is existing, COD and ammonia nitrogen are greatly reduced, and water outlet COD concentration is 0.94-2.0mg L-1, ammonia nitrogen concentration is 0.04-0.10mg L-1, nitrate nitrogen concentration 0.38-0.68mg L-1, nitrite nitrogen concentration 0.10- 0.38mg L-1, total nitrogen concentration 0.48-0.96mg L-1, total phosphorus concentration 0.05-0.10mg L-1
Embodiment five
The present embodiment and embodiment two the difference is that, in specific application, conditioning tank 4 be a volume be 1m × The cuboid pond body of 1m × 2m.It is 2m × 2m × 4.5m length that first pond body 11 of anaerobic biofilter 1, which is arranged to a volume, Cube pond body.In first pond body 11 of anaerobic biofilter 1, with cobblestone, glass-ceramic ring for the first bottom filtrate 131, Height is set as 0.3m, and filling 3-5mm haydite is arranged the first bottom filtrate 131 as the first upper layer filtrate 132, height above For 3m.It is 1m × 1m × 3.8m cuboid pond body that second pond body 21 of aerobic biofilter 2, which is arranged to a volume,.Aerobic life In second pond body 21 in object filter tank 2, with cobblestone, glass-ceramic ring for the second bottom filtrate 231, height is set as 0.3m, Second bottom filtrate 231 fills the second upper layer of 3-5mm haydite filtrate 232 above, and height is set as 2.7m.Clear water reserviors 6 are one A volume is 1m × 1m × 2m cuboid pond body, is connected by water pipe with conditioning tank 4.Sea-farming tail water salinity is 35-38g L-1, COD concentration 9.82mg L-1, ammonia nitrogen concentration 0.536mg L-1, nitrite nitrogen 1.222mg L-1, nitrate nitrogen 0.220mg L-1, total nitrogen concentration 2.2mg L-1, total phosphorus concentration 1.024mg L-1.Anaerobic biofilter 1 and aerobic biofilter 2 strains are derived from the sewage treatment plant that processing has the sewage of certain salinity, and are carried out using nutrient solution and sea-farming tail water Domestication culture, until adapting to sea-farming tail water completely.It is 1.68- that aerobic biofilter 2, which is discharged COD concentration, at this time 3.6mg L-1, ammonia nitrogen concentration is 0.07-0.18mg L-1, nitrate nitrogen concentration 0.66-1.26mg L-11, nitrite nitrogen concentration 0.18-0.67mg L-1, total nitrogen concentration 0.81-1.75mg L-1, total phosphorus concentration 0.07-0.1mg L-1.Aerobic biofilter 2 goes out Water and tail water are mixed in 1:1 ratio in conditioning tank.1 dissolved oxygen of anaerobic biofilter is controlled in 0mg L-1, hydraulic detention time is 2-14h.In the case where hydrolysis acidification bacterium, methanogen, denitrifying bacterium, anaerobic ammonia oxidizing bacteria exist and play operative condition, occur to divide Larger molecular organics are solved as small organic molecule reaction, anti-nitration reaction, Anammox reacts, and bacteria metabolism is made With and filtrate Physical entrapment and microorganism adsorption effect, can partially reduce anaerobic biofilter water outlet COD, Ammonia nitrogen, total nitrogen, total phosphorus and concentration of suspension.The water outlet COD concentration of anaerobic biofilter 1 is 3.0-6.1mg L-1, ammonia Nitrogen concentration is 0.14-0.28mg L-1, nitrate nitrogen concentration 0.36-0.74mg L-1, nitrite nitrogen concentration 0.28-0.70mg L-1, total nitrogen concentration 0.82-1.75mg L-1, total phosphorus concentration 0.07-0.12mg L-1.Anaerobic biofilter water outlet enters aerobic life Object filter tank.2 dissolved oxygen of aerobic biofilter is controlled in 1-5mg L-1Between, hydraulic detention time 1-3h.In different oxygen abundant Bacterium, under the conditions of nitrifier is existing, COD and ammonia nitrogen are greatly reduced, and water outlet COD concentration is 1.68-3.6mg L-1, ammonia nitrogen concentration is 0.07-0.18mg L-1, nitrate nitrogen concentration 0.66-1.26mg L-1, nitrite nitrogen concentration 0.18- 0.67mg L-1, total nitrogen concentration 0.81-1.75mg L-1, total phosphorus concentration 0.07-0.10mg L-1
The upper only embodiments of the present invention, are not intended to restrict the invention.For those skilled in the art For, the invention may be variously modified and varied.All any modifications made in spirit and principles of the present invention are equal Replacement, improvement etc., should all be included within scope of the presently claimed invention.

Claims (10)

1. a kind of sea-farming tail water treatment system based on biofilter characterized by comprising
Anaerobic biofilter (1) comprising the first pond body (11), the first supporting layer (12) and the first biofilter material (13);Institute It states the first supporting layer (12) and the first biofilter material (13) to be set in first pond body (11), and first biological filter Material (13) is located on first supporting layer (12);The first microbiologic population has been raised and train in first biofilter material (13);
Aerobic biofilter (2) is connected to the anaerobic biofilter (1);The aerobic biofilter (2) includes the second pond Body (21), the second supporting layer (22) and the second biofilter material (23);Second supporting layer (22) and the second biofilter material (23) it is set to second pond body (21), and second biofilter material (23) is located on second supporting layer (22);Institute It states in the second biofilter material (23) and has raised and train the second microbiologic population;And
Back-purge system (3) comprising recoil air-washing system (31) and recoil water wash system (32);The recoil air-washing system (31) two wind are washed end and are connected to respectively with the first pond body (11) and the second pond body (21), and two recoil air-washing systems (31) wind is washed end and is located at below first supporting layer (12) and the second supporting layer (22);The recoil water wash system (32) two washing ends are connected to the first pond body (11) and the second pond body (21) respectively, and two recoil water wash systems (32) washing end is located at below first supporting layer (12) and the second supporting layer (22).
2. the sea-farming tail water treatment system according to claim 1 based on biofilter, which is characterized in that it is also wrapped Include conditioning tank (4);The conditioning tank (4) is connected to first pond body (11) and the second pond body (21) respectively.
3. the sea-farming tail water treatment system according to claim 2 based on biofilter, which is characterized in that it is also wrapped Include grid (5);The grid (5) is connected to the conditioning tank (4).
4. the sea-farming tail water treatment system according to claim 2 based on biofilter, which is characterized in that it is also wrapped Include clear water reserviors (6);Second pond body (21) is connected to by the clear water reserviors (6) with the conditioning tank (4).
5. the sea-farming tail water treatment system according to claim 4 based on biofilter, which is characterized in that described anti- The water inlet end for rushing water wash system (32) is connected to the clear water reserviors (6).
6. the sea-farming tail water treatment system according to claim 1 based on biofilter, which is characterized in that described to detest Oxygen biofilter (1) further includes the first water distribution system and the first gas distribution system.
7. the sea-farming tail water treatment system according to claim 1 based on biofilter, which is characterized in that described good Oxygen biofilter (2) further includes the second water distribution system and the second gas distribution system (24).
8. a kind of application method of such as sea-farming tail water treatment system of the claim 1 based on biofilter, which is characterized in that The following steps are included:
Make and be arranged anaerobic biofilter (1), aerobic biofilter (2) and back-purge system (3);
Strain is added respectively at the anaerobic biofilter (1) and aerobic biofilter (2) and carries out domestication culture, and forms the One microbiologic population and the second microbiologic population;
After the completion of Spawn incubation, sea-farming tail water passes sequentially through the anaerobic biofilter (1) and aerobic biofilter (2) Carry out purified treatment;
Back-purge system (3) carries out backwash processing to the anaerobic biofilter (1) and aerobic biofilter (2) respectively.
9. the application method of the sea-farming tail water treatment system according to claim 8 based on biofilter, feature It is, it includes following that strain, which is added, to carry out domestication culture respectively at the anaerobic biofilter (1) and aerobic biofilter (2) Sub-step:
Nutrient solution preculture;
The mixed liquor of nutrient solution and sea-farming tail water adapts to cultivate.
10. the application method of the sea-farming tail water treatment system according to claim 8 based on biofilter, feature It is, the strain that the anaerobic biofilter (1) is added includes hydrolysis acidification bacterium, denitrifying bacterium, anaerobic ammonia oxidizing bacteria and gathers Phosphorus bacterium;
The strain that the aerobic biofilter (2) is added includes heterotroph, nitrococcus and nitrifier.
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