CN100579366C - Aquiculturing system process for works with circulating water - Google Patents

Aquiculturing system process for works with circulating water Download PDF

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Publication number
CN100579366C
CN100579366C CN200510111499A CN200510111499A CN100579366C CN 100579366 C CN100579366 C CN 100579366C CN 200510111499 A CN200510111499 A CN 200510111499A CN 200510111499 A CN200510111499 A CN 200510111499A CN 100579366 C CN100579366 C CN 100579366C
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China
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water
workshop
aquiculturing
works
culture
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CN200510111499A
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Chinese (zh)
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CN1981574A (en
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朱学宝
谭洪新
罗国芝
朱浩
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上海水产大学
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81Aquaculture, e.g. of fish
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Abstract

An industrinized aquatic product culturing technology with closed-loop circulated water system includes such steps as pumping the culture water from culture pool into drum-type solid-liquid separator, removing suspended big particles, making the water flow through a purifying channel to remove suspended small particles and part of NH4-N and NO2-N, collecting the water in a pool, pumping the water into an aerating bio-filter and floating ball type bio-filter, removing the most of NH4-N, NO2-N and COD, by-passing through foam separating-ozone disinfecting unit for removing COD and suspended fine particles while disinfecting and aerating, regulating pH value and water temp, ultraviolet disinfecting, and returning the water back into culture pool.

Description

Aquiculturing system process for works with circulating water
Technical field:
The present invention relates to industrialized aquiculture system.
Background technology
The healthy growth of cultured fishes needs good growing environment.Good water quality is the basis of aquaculture, and water quality deterioration can cause minimizing, the increase disease occurrence probability of fish output, even causes fish kills.Therefore, the cycle water industrialized aquiculture should dispose and be fit to safe, efficient, the energy-conservation water treatment system of cultured fishes to water quality requirement.Economize on water, economize ground, not influenced by natural environment and climate, can produce continuously throughout the year, high yield, high-quality, cycle water industrial aquaculture efficient and free from environmental pollution are the new modes of walking technology alternate resources way.
In recent years, many countries are from environment and healthy height, and restriction contains the discharging of high concentration nitrate breeding wastewater, and for example the discharge standard of the European Community is 11.6mg NO 3Below-the N/L.
From twentieth century since the seventies, China's industrial fish farming has the development of considerable scale, but these are commonly referred to as the facility of industrial fish farming, great majority have only filtration, heat, flowing water and oxygen increasing equipment, and the workshop unit for treating water of a lot of units accounts for cultured area and reaches more than 100%, and breeding wastewater is replied availability and is lower than 50%, water treatment facilities cost and operating cost height, the fish load capacity of unit of water body is low, generally only is 10~20kg/m 3There is not the industrial fish farming industry development of water treatment facilities truly many more, just serious more to the pollution of environment.The core technology of cycle water industrial aquaculture truly is that the water of breeding water and waste water purifies and reply the technology of utilizing.
Improve the breeding water cycle-index, increase breeding water and handle frequency, can improve the recycling rate of waterused of breeding water.The general day cycle-index in external cycle water workshop is more than 12 times.But domestic power cost is higher than abroad, and cycle-index is high more, and power cost is just big more.From saving the angle of cost, cycle-index is low more good more.In recent years, the research of breed water treatment new technology, new technology and the relevant equipment of " energy-conservation, efficient, the safety " though of more domestic colleges and universities, research institution and the suitable China's actual conditions of relevant enterprise attention exploitation, but, present domestic cycle water industrial aquaculture industry still faces further the load capacity of improving technical level, improve the unit of water body fish culture, increases economic efficiency, cut down the consumption of energy, reduce equipment cost and operating cost, form the burdensome task of facility fishery series equipment production capacity.
Summary of the invention
The technical issues that need to address of the present invention provide a kind of water saving, save land, reduced investment, aquiculturing system process for works with circulating water that efficient is high.
Technical scheme aquiculturing system process for works with circulating water of the present invention comprises and sets the closed circulation water treatment system, air heat and the heat supply of water body mode of heating are taked in the workshop, it is characterized in that breeding water is from culturing the pond suspended particulate of process drum-type equipment for separating liquid from solid removal particle diameter>60um successively; Remove the suspended particulate of part particle diameter<60um and the NH of part through the purification canal that flowing of double as plant operations passage again 4-N, NO 2-N; Introduce collecting basin then; Be furnished with tracheae flowing under the purifier, select for use pure oxygen or Roots blower to supply with oxygen according to the system load amount; With the one-level lift pump with breeding water most NH in the aeration type biofilter of collecting basin extracting to two layer and float-ball type biofilter removal system 4-N, NO 2-N, COD, COD in the bypass process foam separation-ozonization plant reduction system and the suspended particulate of particle diameter<30um also carry out water body disinfection and oxidation; Regulate pH and water temperature through preparing pool again, culture the pond through entering after the ultra violet sterilizer sterilization at last.
This method is because purification canal double as plant operations passage is being flowed in utilization, and utilize efficient water treatment facilities, form the rational deployment in space, realize that the water treatment workshop accounts for the area ratio in total workshop below 20%, accounting for 100% of total workshop area with traditional handicraft water treatment workshop compares, embody the cycle water industrialized aquiculture pattern advantage that " saves land ", cost of investment is external 1/3,1/4 of domestic other technology; Owing to adopt the method for operation of one-level extracting, stepped starting, reduced operation energy consumption simultaneously, compared with traditional handicraft, energy consumption reduces by 42~66%, helps applying of closed circulation aquaculture pattern; Foam separates, the ozone water body sterilizing equipment decontaminating apparatus is integrated, and the foam separative efficiency reaches more than 90%, disinfection efficiency reaches 95%, water treatment system water outlet dissolved oxygen reaches 18.6mg/L, compares with traditional separated type technology, has reduced equipment cost and operating cost; Native system day cycle-index 8 times, the water quality recycling rate of waterused reaches 95%, the load level of system reaches 60kg/M 3, when system load is relatively lower, can also reduce the water pump quantity of work, reduce cycle-index, save energy consumption.
Description of drawings
What accompanying drawing was represented is cycle water industrialized aquiculture system schematic flow sheet.
Embodiment
Aquiculturing system process for works with circulating water comprises and sets the closed circulation water treatment system, air heat and the heat supply of water body mode of heating are taked in the workshop, and circular water treating system comprises cultures pond, drum-type equipment for separating liquid from solid, flowing purifier, aeration type biofilter and float-ball type biofilter, foam and separate-ozonization plant, preparing pool, ultra violet sterilizer; Utilize water circulating pump with breeding water from the collecting basin extracting to each unit for treating water, all unit for treating water all can independently be closed down control, select to start each unit for treating water according to system load height and water quality condition; System water circulation 8 times on the one;
The workshop gross area is 1940.4m 2, culturing the pond gross area is 1000m 2, culturing the pond gross area is 51.5% of the workshop gross area; Water treatment workshop gross area 363m 2Be to culture 18.7% of workshop area; Breeding water relies on height fall to flow between each unit; Air heat and water body mode of heating are taked in the workshop heat supply;
Utilize the operating walk way space in workshop to be provided with and flowing purifier, be furnished with tracheae flowing under the purifier, select for use pure oxygen or Roots blower to supply with oxygen according to the system load amount;
The aeration type biofiltration device is small-sized tubbiness, and used filtering material is clinoptilolite, medical stone and shell, forms in 7: 2: 1 ratios, and specific surface area is 370m 2.m -3, each biofilter is equipped with 3m 3Filtrate, each subsystem have 8 aeration type biofilters;
Float-ball type biofilter volume is 4m 3, controllable flow amount, aeration rate, filtrate adopts the PVC ball;
Foam separation-ozonization plant can discontinuous running, when the COD of system exceeds standard or cultures pool surface when obviously visible suspension foam is arranged, starts the foam separator; If just used medicine in the system, then close the foam separator in 24.
The present invention adopts tool salt resistant character material, can carry out sea, the breed of fresh water kind.
Adopt native system to carry out the mariculture of red tilapia, the breed through 95 days, red tilapia fish carrying capacity reaches 58.00kg/m 3During the breed, ammonia nitrogen concentration<1.5mg/L, nitrite nitrogen concentration<0.8mg/L, DO>5.0mg/L; Every square metre of cultured area profit reaches 582.95 yuan, and the percentage that power consumption accounts for production cost is 16.06%.
Carry out Gao Tige in the system Freshwater aquiculture, in 170 days culturing time, Gao Tige Breed survival rate 100%, daily gain rate 1.83g, feed coefficient 1.14, the high capacity 40kg/M of system 33182.79 yuan of the unit of water body output values, 1039.73 yuan of gross profit margins, system energy consumption accounts for 13.79% of totle drilling cost; Water quality maintains NH substantially in the system 4-N is lower than 2.0mg/L, NO 2-N is lower than the level of 1.0mg/L.
Realize Australia jewel fish unit of water body fish loading amount 40kg/m in the system 3, 3182 yuan/m of the output value 3With 51.6% gross profit margin, power consumption is 11.96% of a production cost, and economic benefit and ecological benefits obviously are better than traditional extensive breeding technique.

Claims (4)

1, aquiculturing system process for works with circulating water, set the closed circulation water treatment system, breeding water is removed the suspended particulate of particle diameter>60um successively from culturing the pond through the drum-type equipment for separating liquid from solid, remove the suspended particulate of part particle diameter<60um and the NH of part through the purification canal that flowing of double as plant operations passage again 4-N, NO 2Introduce collecting basin behind the-N; It is characterized in that culturing the pond gross area is 51.5% of the workshop gross area; The water treatment workshop gross area is to culture 18.7% of workshop area, and air heat and the heat supply of water body mode of heating are taked in the workshop; Be furnished with tracheae flowing under the purifier, select for use pure oxygen or Roots blower to supply with oxygen according to the system load amount; With the one-level lift pump with breeding water most NH in the aeration type biofilter of collecting basin extracting to two layer and float-ball type biofilter removal system 4-N, NO 2-N, COD, COD in the bypass process foam separation-ozonization plant reduction system and the suspended particulate of particle diameter<30um also carry out water body disinfection and oxygenation; After preparing pool is regulated pH and water temperature, culture the pond through entering after the ultra violet sterilizer sterilization at last again.
2. aquiculturing system process for works with circulating water according to claim 1 is characterized in that the used filtering material of aeration type biofiltration device is clinoptilolite, medical stone and shell, forms in 7: 2: 1 ratios, and specific surface area is 370m 2.m -3, each biofilter is equipped with 3m 3Filtrate.
3, aquiculturing system process for works with circulating water according to claim 1 and 2 is characterized in that it being that float-ball type biofiltration device volume is 4m 3, filtrate adopts the PVC ball float.
4, aquiculturing system process for works with circulating water according to claim 1 and 2, its tag system water circulation 8 times on the one.
CN200510111499A 2005-12-15 2005-12-15 Aquiculturing system process for works with circulating water CN100579366C (en)

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CN101444196B (en) * 2008-11-07 2011-01-12 朱勤 Circulatory system for temporarily rearing small aquatic products
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