CN103420544B - In-situ water repair method for clean aquaculture - Google Patents
In-situ water repair method for clean aquaculture Download PDFInfo
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- CN103420544B CN103420544B CN201310352478.6A CN201310352478A CN103420544B CN 103420544 B CN103420544 B CN 103420544B CN 201310352478 A CN201310352478 A CN 201310352478A CN 103420544 B CN103420544 B CN 103420544B
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Abstract
The invention relates to an in-situ water repair method for clean aquaculture. Polluted aquaculture water is pushed by liquid level difference, and organic pollutants are removed by ecological infiltration in forms of interception, absorption and degradation which are in coordination. When water discharged from the pool-bottom water collecting tank enters a solidified bioreactor, solidified microaerobic microorganism in a carrier is activated to provide a rich microaerobic microbial community source for the ecological infiltration system. The water containing the microbial community is pumped back to the water system of the aquaculture pool, the microorganism reproduces massively under the action of a shallow aerating system, the microorganism uses the pollutants of the required nutrients, and accordingly aquaculture water can be purified effectively, and clean aquaculture is achieved. The ecological infiltration pool-bottom system is built by directly using the bottom space of the aquaculture pool, the processing system does not occupy floor space, sludge is not generated, cost is saved, the solidified microorganism carrier in long in service life, in-situ aquaculture water purification and up-to-standard pollutant discharge are achieved, and evident comprehensive benefits are achieved.
Description
Technical field
The invention belongs to a kind of relate to the water bodys such as seawater, salt-fresh water and fresh water high-density aquiculture purifying treatment, be particularly applied to the method cleaning aquaculture system in-situ immobilization.
Background technology
The purification process of the water bodys such as existing seawater, salt-fresh water and fresh water high-density aquiculture has multiple, wherein biological purification method uses the most extensive, that effect is comparatively stable, working cost is lower prevailing technology at present, and its method comprises biomembrance process, artificial swamp method, adds high-effective microorganism microbial inoculum method and immobilized microorganism technique.
Biomembrance process utilizes the microbial film of apposition growth on inert support surface, removed the organic pollutant in water body by absorption and degradation pathway.Its advantage is: (1) Microbial diversity, biological food chain length, is conducive to the processing load improving wastewater treatment efficiency and unit surface; (2) dominant microflora partition running, is conducive to improving the biological degradation efficiency to pollutent, improves Nitrogen/Phosphorus Removal; (3) have stronger adaptability to water quality, water yield variation, anti impulsion load power strengthens; (4) process of sewage of low concentration is applicable to; (6) be easy to safeguard, operational management is convenient, consumes energy low.Shortcoming is comparatively strict to the requirement of technological design and operational conditions, once the problem of generation, just can cause breakage and the blocking of filtrate, reduce the water quality of water outlet.
Artificial swamp refers to simulation and the structure and function of artificial-strengthening natural bioremediation, the artificial a kind of sewage purification system ensemble built.Water body, water-permeable matrix (as soil, sand, stone), waterplant and microbial population form the fundamental of artificial wet land system, its principle of work be utilize matrix, between waterplant and microorganism, physics, chemistry and biological three kinds of synergies carry out purifying water body.The advantage of artificial swamp is: (1) build and working cost lower; (2) be easy to realize wastewater treatment effectively reliably; (3) available buffer is to the impact of waterpower and pollution load.Shortcoming is: (1) floor space is large; (2) biological and waterpower complicacy makes designed breeding be difficult to accurately, therefore often improperly makes water outlet not reach design requirements or can not qualified discharge owing to designing, and somebody's work wetland has become source of pollution on the contrary.
Add the method for high-effective microorganism microbial inoculum, being directly increase biomass with target degradation material for the high-effective microorganism microbial inoculum of primary carbon source and the energy by adding to water body, strengthening the removal ability to target stains material.Mainly add the many bacterial strains complex microorganism preparations based on photosynthetic bacterium in aquaculture, utilize the ammonia nitrogen in water, hydrogen sulfide etc., the toxic substance in water is reduced, dissolved oxygen increases, and prevents body eutrophication, the transparency of water is improved, thus improve water quality.In addition, by the microorganism of multiple non-virulent as yeast, genus bacillus, actinomycetes etc. make many bacterial strains composite prod, the difference in functionality of each flora can be played, play synergy, overcome single variety bad adaptability, deficiency that application surface is narrow.The competitive power of microorganism in microbiobacterial agent under certain environmental conditions and adaptability are the keys determining its Screening of high efficient paracetamolum.For the complex environment that actual multiple pollutant coexists.The microbiobacterial agent developed at present is existence and stability difference and the problem such as regulation effect is not obvious often.
Immobilized microorganism technique be with the measure of chemistry or physics by free microorganism restriction or be positioned within the scope of a certain particular space, retain the catalytic activity that it is intrinsic, and the modern biotechnology that can be repeated and use continuously.Technical essential is first by required dominant bacteria Isolation and screening from active sludge, is fixed in reactor after a large amount of enrichment, forms continuous, an efficient Sewage treatment systems.Compared to traditional treatment process, its advantage is: the microorganism highly dense that (1) is immobilized also keeps biological activity, can breed fast, in a large number under optimum conditions, be conducive to improving microorganism concn in bio-reactor, Reaction time shorten, reduction reaction process, reduce cost of equipment.(2) can by being fixed after required bacteria selection, the bacterium that guarantee rate of propagation is slow thus plays its best metabolic activity, and can shorten the start time of reactor.(3) high reactivity brought due to immobilization, the microorganism of high density and the protection of immobilization material, make the impact of the impact of water quality or the water yield on processing efficiency and stability drop to lower-most point.(4) microorganism cells is fixed on non-water-soluble carrier, is therefore easy to realize solid-liquid separation fast and efficiently, and due to microbial biomass large, its growth is in the endogenous respiration stage substantially, and therefore surplus sludge volume produces few, non-secondary pollution generation.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of propose based on biomembrance process, artificial swamp method and immobilized microorganism technique advantage and weak point be applied to the method cleaning aquaculture system in-situ immobilization, its technological core is the micro-aerobic immobilized biotechnology in-situ immobilization aquaculture water of ecological diafiltration coupling, realizes cleaning aquaculture.
The present invention solves the problems of the technologies described above with following technical scheme:
Of the present inventionly be applied to the technology cleaning aquaculture system in-situ immobilization, its technical process is: contaminated aquaculture water is promoted by liquid level difference, water leg at the bottom of pond is entered from top to bottom through fine sand layer, gravel bed, ecological layers of balls, the nitrobacteria that at the bottom of ecological diffusion cell, system is parasitic, can play better biochemical effects.Organic pollutant in water body to act synergistically with Physical entrapment, chemisorption and biological degradation three kinds of modes at ecological filtration system and is removed.Water leg water outlet at the bottom of pond enters micro-aerobic immobilization bioreactor, and the micro-aerobic microbiological of the immobilization in the bio-carrier in reactor is activated gradually in aquaculture water, for ecological filtration system provides abundant micro-aerobic microbiological flora source.Water circulating pump will be rich in the water body blowback cultivating pool water body system of micro-aerobic microbiological flora, from the microorganism amount reproduction of micro-aerobic immobilization bioreactor under Inka aeration systemic effect, and with pond waters pollutent for desired nutritional source, thus effective purifying aquatic water, realize cleaning cultivation.
The equipment cleaning aquaculture system in-situ immobilization is made up of system, immobilization biological reactive system at the bottom of Inka aeration system, cultivating pool water body system, ecological diffusion cell.Wherein: Inka aeration system is made up of micro-pore aeration element, gas blower and air-supply pipeline; Cultivating pool water body system is made up of pond body and water body; At the bottom of ecological diffusion cell, system is from top to bottom provided with water leg at the bottom of fine sand layer, gravel bed, biochemical ball layer and pond; Immobilization biological reactive system is made up of the fixed microorganism carrier in micro-aerobic immobilization bioreactor, reactor and variable valve, water circulating pump and circulation line.
Feature of the present invention is: (1) directly utilizes cultivating pool bottom space to build system at the bottom of ecological diffusion cell, solves the occupation of land problem of aquaculture water treatment system.(2) compared with existing treatment process, present method does not produce excess sludge, has saved the expense that excess sludge process produces.(3) the fixed microorganism carrier validity period that adopts of this technique is long, without the need to changing in 10 years, damagedly to supplement by 5% every year.(4) purified in situ and the pollutant discharge in compliance with the standard of aquaculture water can be realized.
Accompanying drawing explanation
Fig. 1 is the process flow sheet being applied to the method cleaning aquaculture system in-situ immobilization of the present invention.
In figure: the micro-aerobic immobilization bioreactor 11-fixed microorganism carrier 12-variable valve 13-reactor water inlet pipe 14-water circulating pump 15-circulation line of water leg 10-at the bottom of the ecological body 5-water body 6-fine sand layer 7-gravel bed 8-biochemical ball layer 9-pond, pond, diffusion cell of 1-micro-pore aeration element 2-gas blower 3-air-supply pipeline 4-
Embodiment
Of the present inventionly be applied to the technology cleaning aquaculture system in-situ immobilization, be made up of system, immobilization biological reactive system four part at the bottom of Inka aeration system, cultivating pool water body system, ecological diffusion cell.Wherein: Inka aeration system comprises micro-pore aeration element 1, gas blower 2 and air-supply pipeline 3; Cultivating pool aqueous systems turnkey draws together pond body 4 and water body 5; At the bottom of ecological diffusion cell, system has fine sand layer 6, gravel bed 7, biochemical ball layer 8 from top to down, and bottom is water leg 9 at the bottom of pond; Have the micro-aerobic immobilization bioreactor 10 of built-in fixed microorganism carrier 11 in immobilization biological reactive system, the two ends of micro-aerobic immobilization bioreactor respond device water inlet pipe 13 and water circulating pump 14 respectively, the other end of water circulating pump has variable valve 12 and circulation line 15.
Contaminated aquaculture water is promoted by liquid level difference, enters water leg 9 at the bottom of pond, the nitrobacteria that at the bottom of ecological diffusion cell, system is parasitic from top to bottom, can play better biochemical effects through fine sand layer 6, gravel bed 7, ecological layers of balls 8.Organic pollutant in water body is removed with Physical entrapment, chemisorption and biological degradation three kinds of collaborative approach at ecological filtration system.When reactor inlet regulating valve 12 is opened, after water circulating pump 14 starts, water leg 9 water outlet at the bottom of pond enters micro-aerobic immobilization bioreactor 10 through reactor suction culvert 13, fixed microorganism carrier 11 in reactor is activated gradually in aquaculture water, be rich in micro-aerobic microbiological flora in a large number and enter cultivating pool water body with current through reactor inlet regulating valve 12 and circulation line 15, for ecological filtration system provides abundant micro-aerobic microbiological flora source, micro-aerobic immobilization bioreactor microorganism amount reproduction is come under Inka aeration systemic effect, and with pond waters pollutent for desired nutritional source, thus can effective purifying aquatic water, realization cleans cultivation.There is obvious comprehensive benefit.
Embodiment 1
Applicant has carried out the simulation application test of marine culture water reparation by technology of the present invention.Pond body adopts the pvc pipe of Φ 0.2 × 1.8m vertically to arrange, and in pipe, upper part water depth is 1.1m, and the ecological filter layer height of lower part is 0.6m.Filler is respectively from top to bottom: fine sand layer height 0.15m, particle size range 0 ~ 0.004m; Gravel bed height 0.25m, particle size range 0.01 ~ 0.04m; The each meromict of two kinds of spheroids that biochemical ball layer is respectively 0.04m and 0.01m by particle diameter is filled.
Promoted by liquid level difference with the contaminated marine culture water of bait simulation preparation of sea crystal and rich in protein, after reactor inlet regulating valve and water circulating pump are opened, contaminated seawater enters water leg at the bottom of pond through fine sand layer, gravel bed, biochemical ball layer from top to bottom, and the organic pollutant in water body acts synergistically at ecological filtration system with Physical entrapment, chemisorption and biological degradation three kinds of modes and is removed.The water outlet of water leg at the bottom of pond enters micro-aerobic immobilization bioreactor through reactor suction culvert, and the fixed microorganism carrier in reactor is activated gradually in aquaculture water, for ecological filtration system provides abundant micro-aerobic microbiological flora source.Water circulating pump and circulation line will be rich in micro-aerobic microbiological flora blowback cultivating pool water body system, under Inka aeration systemic effect, come from the microorganism amount reproduction of micro-aerobic immobilization bioreactor, and with pond waters pollutent for desired nutritional source, thus can effective purifying aquatic water, realize cleaning cultivation.
Blower discharge amount: 60L/min, seepage velocity at the bottom of pond: 0.035m/min, water body COD
mnconcentration: 15mg/L, ammonia nitrogen concentration: 10.5mg/L.Through the continuous operation of 8 hours, COD
mnconcentration is down to 7.8mg/L, and ammonia nitrogen concentration is down to 0.5mg/L, reaches " sea farming water emission request " (SC/T9103-2007) primary standard respectively.
In briny environment, system is to COD
mnhave good removal effect with ammonia nitrogen, system can by COD
mnbe reduced to 5mg/L and below 0.5mg/L respectively with ammonia nitrogen concentration, in order to ensure the steady running of system, in system, organic concentration can not be too low, as COD in system
mnconcentration at more than 8mg/L time, system is better to ammonia nitrogen removal effect, and final ammonia nitrogen concentration is stabilized in about 0.5mg/L, system run all right.
Embodiment 2
Applicant has carried out the simulation application test of freshwater aquiculture water remediation by technology of the present invention.The composition of pond body, water depth, filter layer, particle diameter are with highly all identical with embodiment 1.
Tap water, through being exposed to the sun after except chlorine residue, uses as freshwater aquiculture water.Main pollution condition when coming according to aquaculture water adds the bait of rich in protein, preparation simulating pollution source.
Contaminated water COD
crconcentration is 250mg/L, and ammonia nitrogen concentration is 15mg/L.
The flow process that aquaculture water is repaired is identical with embodiment 1 with processing parameter.Through the continuous operation of 8 hours, COD
crconcentration is 20mg/L, and ammonia nitrogen concentration is 0.3mg/L.Reach " freshwater aquaculture water emission request " (SC/T9101-2007) secondary standard respectively.
Conclusion is: in fresh water environment, and system is to COD
crbetter with ammonia nitrogen removal effect, COD
crbe reduced to 20mg/L and below 0.5mg/L respectively with ammonia nitrogen concentration, but system there is certain influence each other to COD and ammonia nitrogen removal.As COD in maintenance system
crconcentration at more than 30mg/L time, system is better to ammonia nitrogen removal effect, and ammonia nitrogen concentration maintains below 1mg/L substantially, system run all right.
Claims (2)
1. one kind is applied to the method cleaning aquaculture system in-situ immobilization, it is characterized in that technical process is: contaminated aquaculture water is promoted by liquid level difference, water leg at the bottom of pond is entered from top to bottom through fine sand layer, gravel bed, ecological layers of balls, the nitrobacteria that at the bottom of ecological diffusion cell, system is parasitic, can promote to play better biochemical effects; Organic pollutant in water body to act synergistically with Physical entrapment, chemisorption and biological degradation three kinds of modes at ecological filtration system and is removed; Water leg water outlet at the bottom of pond enters micro-aerobic immobilization bioreactor, and the micro-aerobic microbiological of the immobilization in the bio-carrier in reactor is activated gradually in aquaculture water, for ecological filtration system provides abundant micro-aerobic microbiological flora source; Water circulating pump will be rich in the water body blowback cultivating pool water body system of micro-aerobic microbiological flora, from the microorganism amount reproduction of micro-aerobic immobilization bioreactor under Inka aeration systemic effect, and with pond waters pollutent for desired nutritional source, thus effective purifying aquatic water, realize cleaning cultivation.
2. be applied to the method cleaning aquaculture system in-situ immobilization as claimed in claim 1, it is characterized in that the equipment cleaning aquaculture system in-situ immobilization is made up of system, immobilization biological reactive system at the bottom of Inka aeration system, cultivating pool water body system, ecological diffusion cell; Wherein: Inka aeration system is made up of micro-pore aeration element, gas blower and air-supply pipeline; Cultivating pool water body system is made up of pond body and water body; At the bottom of ecological diffusion cell, system is from top to bottom provided with water leg at the bottom of fine sand layer, gravel bed, biochemical ball layer and pond; Immobilization biological reactive system is made up of the fixed microorganism carrier in micro-aerobic immobilization bioreactor, reactor and variable valve, water circulating pump and circulation line.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104098186B (en) * | 2014-08-01 | 2015-12-30 | 徐凯 | A kind of immobilized microorganism sewage treatment process |
| CN104085993B (en) * | 2014-08-01 | 2015-12-09 | 新昌县澄潭镇澄设机械厂 | A kind of constructed wetland device |
| CN104085992B (en) * | 2014-08-01 | 2015-12-02 | 新昌县镜岭镇柳良轴承厂 | A kind of sewage treatment process with warming solar energy effect |
| CN104386825B (en) * | 2014-12-01 | 2016-04-13 | 广西大学 | The method that the pool, a kind of lake water body in-situ is repaired |
| CN106277683B (en) * | 2016-09-07 | 2019-10-25 | 广西大学 | A kind of method of contaminated lake pool sediment in-situ control |
| AU2019230457B2 (en) * | 2018-03-06 | 2020-07-09 | Environmental Engineers International Pty Ltd | Method for remediating industrial wastewater |
| CN109293012A (en) * | 2018-11-22 | 2019-02-01 | 岑延华 | Oxygen-dissolving device is grown in a kind of novel water body microorganism live bacteria training |
| CN109368772A (en) * | 2018-12-12 | 2019-02-22 | 成都利尔环保技术开发有限公司 | Recycle current flow fixed bed aerobic biofilter |
| CN114315051A (en) * | 2022-01-18 | 2022-04-12 | 山东省淡水渔业研究院（山东省淡水渔业监测中心） | Ecological processing system of fish culture waste water |
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| CN101560039B (en) * | 2009-05-22 | 2011-04-27 | 上海同济建设科技有限公司 | Landfill leachate wastewater treatment system and process thereof |
| CN201770585U (en) * | 2010-08-13 | 2011-03-23 | 武汉中科水生环境工程有限公司 | Landscape type composite artificial wet land treatment device for eutrophication water bodies |
| CN102557348B (en) * | 2012-01-09 | 2013-05-22 | 中国环境科学研究院 | Soil remediation and sewage purification integrated ecological treatment device |
| CN203065257U (en) * | 2013-02-19 | 2013-07-17 | 舟山佳宏水处理工程有限公司 | Automatic oxygen increasing type underflow constructed wetland |
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