CN102381797A - Method for treating waste liquid and waste gas produced by fish meal processing - Google Patents
Method for treating waste liquid and waste gas produced by fish meal processing Download PDFInfo
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- CN102381797A CN102381797A CN2011103116472A CN201110311647A CN102381797A CN 102381797 A CN102381797 A CN 102381797A CN 2011103116472 A CN2011103116472 A CN 2011103116472A CN 201110311647 A CN201110311647 A CN 201110311647A CN 102381797 A CN102381797 A CN 102381797A
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Abstract
The invention relates to a method for treating waste liquid produced by fish meal processing. The method mainly comprises the following steps of: separating the oil and water in pressed liquor from a solid object by using a centrifugal device; heating and concentrating the water containing a small amount of solid object; stopping concentrating when the content of the solid object of a concentrated solution reaches 45-55%; spraying the concentrated solution to a filter cake; and drying. A method for treating waste gas produced by fish meal processing mainly comprises the following steps of: condensing and cooking, drying, concentrating, condensing the waste gas of an amine-removing device through a condenser; sending condensed water to a waste water treatment apparatus for biodegradation treatment; enabling uncondensed gas to pass through a carrier on a grid; arranging an automatic water spraying system above the carrier; and introducing the uncondensed gas subjected to gas washing to a multi-stage biodegradation device. With the adoption of the method, the foul smell waste gas and waste water produced in the fish meal processing course can be effectively treated so as to reach environment-friendly discharge standard. The method is simple, can be automatically treated in large scale and recycle heat energy and save energy when used for heating a boiler and domestic water.
Description
Technical field
The present invention relates to a kind of waste liquid and waste gas processing method.
Background technology
Fish meal be a kind of be raw material with low-value small fish or the accurately machined tankage of fish, the high protein feed raw material of producing through operations such as boiling, squeezing, dryings.The whole machining process process needs the moisture of raw material weight more than 70% is removed; Because raw material is in storage, transportation and the course of processing, its albumen, fat all might be putrid and deteriorated, so fish meal is processed waste liquid and the waste gas stench that is produced; Existing fish meal is processed peanut and generally above-mentioned waste liquid and waste gas is not just dealt with or deal with slightly directly discharging; Environment is on every side caused great pollution, not only influence people's orthobiosis, also restricted the development of local economy simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of waste liquid and the waste gas method that can effectively handle fish meal processing generation.The present invention carries out reuse to available part, to part biodegrade not capable of using.
One, liquid waste disposal
The waste liquid that fish meal processing directly produces is a pressed liquor, promptly squeezes the waste liquid that raw material obtained after the boiling, and it contains oil, water and solid substance, so its treatment process is following:
1, separate: utilize centrifugation apparatus that the oil in the pressed liquor and water and solid substance are separated, make water content in oil less than 1%, impurity is lower than 0.5%, forms hair fish oil and refines; The water and solid substance (11-20%) the entering next procedure that have separated oil concentrate.
2, concentrate: the water heating that will above-mentionedly contain a small amount of solid substance concentrates, preferably controlled temperature 70-100 ℃, vacuum tightness-0.075--0.095Mpa, it is concentrated to carry out single-action or multiple-effect, when the liquid concentrator solid content reaches 45-55%, stops to concentrate.
3, oven dry: above-mentioned liquid concentrator is sprayed onto oven dry together on the press cake.
Two, off gas treatment
The approach that fish meal processing produces waste gas have 1. boiling raw material, 2., oven dry squeeze cake, 3., concentration squeezing liquid, 4., remove amine in the fish meal etc.
Above-mentioned treatment of waste gas method is following:
1, condensation: above-mentioned boiling, oven dry, concentrate and remove amine equipment and be equipped with fish meal grain catcher and exhaust gas collector; This fish meal grain catcher is separated recovery with the solid granule in the waste vapour (being fish meal basically) earlier; The gas that comes out from trap links to each other with condensing surface through exhaust gas collector; Be condensed into water of condensation through about 85% exhaust steam behind the condensing surface, remaining about 15% is non-condensable gas.
2, water of condensation is handled: the above-mentioned waste vapour water of condensation that contains pollutent that is condensed, be called for short sewage, and temperature is generally at 30-40 ℃, and COD is relevant with raw material fish freshness, reaches as high as 10000.This water of condensation is sent into the waste water disposal facility biodegrade to be handled.Concrete treatment step is following:
(1), water of condensation gets into that equalizing tank carries out conventional oil removal and aeration is handled, and the little fat that possibly sneak among the water of condensation is got rid of, and the condensate temperature that will handle is adjusted to and is not higher than 40 ℃, pH value about 7.
(2), the sewage after will regulating carries to anaerobic pond with pump, this airtight anaerobic pond is provided with water pipe that advances above-mentioned sewage continuously and the overflow pipe that leads to Aerobic Pond.Be provided with bacterial classification in this anaerobic pond, it is that the municipal sewage plant handles the used active sludge of sewage, through the degrade active sludge flora of fish meal wastewater of being suitable for of obtaining of acclimation shaking culture.
This active sludge flora domestication and culture method is:
A gets the municipal sewage plant and handles the used active sludge of sewage, adds above-mentioned sewage, and a week is motionless, carries out natural selection, is fit to the flora existence of this condition, and the flora that is not suitable for this condition is dead, and this process COD value reduces very little.
B one week back is with the water in the above-mentioned sewage short run displacement anaerobic pond, and the COD value of detection water inlet and water outlet, and relatively its result's difference is understood the domestication situation.When water outlet COD value is reduced to 800-1000mg/l, be fit to the dominant microflora standard end of degraded fish meal wastewater, can carry out disaggregating treatment to organic matter in the sewage.Active mud content is with the control of anaerobic pond drainage water COD value in this anaerobic pond, and promptly the COD value need increase the good active sludge quantity of domestication when being higher than this value between 800-1000mg/l.
(3), the sewage that in anaerobic pond, decomposed gets into Aerobic Pond, carry out aerobic aeration and handle.This Aerobic Pond is provided with water inlet pipe that links to each other with the anaerobic pond overflow pipe and the water shoot that links to each other with settling bowl; Be provided with aeration tube at the bottom of the pond; Be provided with bacterial classification in this Aerobic Pond; It is that the municipal sewage plant handles the used active sludge of sewage, through the degrade active sludge flora of fish meal wastewater of being suitable for of obtaining of acclimation shaking culture.
This active sludge flora domestication and culture method is basic identical with the acclimation method of anaerobic pond flora, that is:
A gets the municipal sewage plant and handles the used active sludge of sewage, adds above-mentioned sewage, and all left and right sides time is not advanced sewage; But need continuous aeration, carry out natural selection, be fit to the flora existence of this condition; The flora that is not suitable for this condition is dead, and this process COD value reduces very little.
B one week back is with the water in the displacement of the sewage short run in the anaerobic pond Aerobic Pond, and the COD value of detection water inlet and water outlet, and relatively its result's difference is understood the domestication situation.When water outlet COD value is reduced to 120-200mg/l, be fit to the dominant microflora standard end of degraded fish meal wastewater, can carry out disaggregating treatment to organic matter in the sewage.Active mud content is with the control of Aerobic Pond drainage water COD value in this Aerobic Pond, and promptly the COD value need increase the good active sludge quantity of domestication when being higher than this value below 200mg/l.15-35 ℃ of this Aerobic Pond water temperature, pH value 7-8,36-60 cubic metres of/cubic metre water of 24 hours aeration rates.
(4), get into second pond again,, filter again water quality is further optimized, can reach in the 100mg/l, realize qualified discharge through the COD of sewage of above-mentioned processing with microbial bacteria mud and the clear water precipitate and separate of handling well through the Aerobic Pond treated water.
3, non-condensable gas is handled
(1), gas washing: let non-condensable gas that condenser condenses do not get off through the carrier on the grid, this carrier is corrosion-resistant porous hard materials such as porous ceramic grain or the volcanics grain of water flowing, ventilation.The carrier top is provided with automatic water sprinkler system, and it can wash non-condensable gas, can PM for particulate matter be captured first, and the 2nd, make gas temperature not be higher than 38 ℃, live to be fit to follow-up flora, the 3rd, make moisture-saturated, for flora provides necessary living condition.The gas washing water that sprays drops down onto in the following pond via carrier and grid; Water in this pond can be recycled; Flow 10 cubic metres/hour (can adjust flow flexibly according to the facility processing power) more renews water when its water temperature is higher than when 37-38 ℃ or COD value are higher than 200-300mg/l, and the water that the COD value is higher than 200-300mg/l can be used for the biological degradation spray.
(2), biological degradation: the not condensing behind the gas washing is introduced the multi-stage biological decomposition apparatus.Also there is a grid this each unit of placed in-line biodegradation unit, which is provided with above carriers such as identical haydite or volcanics grain, stink substance can suppressed by vector absorption during through carrier layer for non-condensable gas; The carrier top is provided with automatic spraying device; This device at first will have the liquid spraying of active sludge to above-mentioned carrier; 2-3 hour intermittent type is to the sewage of carrier spray COD value at 200-300mg/l then, and it is attached to the active sludge extra-nutrition liquid on the carrier first, can remove the mikrobe that dies again simultaneously; Control the biological degradation temperature simultaneously at 15 ℃-30 ℃, pH value is about 7.Active sludge on the carrier makes it to become odorless gas with the non-condensable gas degraded of absorption.The water that each unit spray of biodegradation unit is got off drops down onto in the following pond via carrier and grid, and the water in this pond can be recycled, and when muddiness, changes.Stink substance is reduced to non-dimensional 1300 through the biodegradation unit odor concentration by original non-dimensional 20000, reaches national atmospheric emission standard.
The present invention has following advantage:
1, the present invention can effectively handle foul waste gas and waste water that the fish meal course of processing produces, makes it all reach environmental emission standard.
2, method is simple, can realize robotization, mass-producing processing.
3, the also recyclable heat energy of the present invention with its heating boiler and domestic water, is saved the energy.
Description of drawings
Fig. 1 is that non-condensable gas treatment unit master of the present invention looks the section simplified schematic diagram.
Embodiment
Example 1
Adopt horizontal centrifugation apparatus and disk centrifugal equipment that the oil in the pressed liquor and water and solid substance are separated, make water content in oil less than 1%, impurity is lower than 0.5%, forms hair fish oil and refines; The water and the solid substance that have separated oil get into next procedure and concentrate.The above-mentioned water heating that contains 20% solid substance is concentrated, and controlled temperature vacuumizes vacuum tightness at 70 ℃ :-0.095Mpa, and carry out multiple-effect and concentrate,, the liquid concentrator solid content stops to concentrate when reaching 55%.Above-mentioned liquid concentrator is sprayed onto oven dry together on the press cake.
Above-mentioned boiling, oven dry, concentrate and remove amine equipment and be equipped with fish meal grain catcher and exhaust gas collector; This fish meal grain catcher is separated recovery with the solid granule in the waste vapour earlier; The gas that comes out from trap links to each other with condensing surface through exhaust gas collector; Be condensed into water of condensation through about 80% exhaust steam behind the condensing surface, remaining about 15% is non-condensable gas.39 ℃ of the waste vapour condensate temperatures that is condensed, COD is 3800.This water of condensation is sent into the waste water disposal facility biodegrade to be handled.Water of condensation gets into equalizing tank and carries out oil removal and aeration processing, the little fat that possibly sneak among the water of condensation is got rid of, and the condensate temperature that will handle is adjusted to 38 ℃, pH value about 7.Sewage after regulating is carried to anaerobic pond with pump, and this airtight anaerobic pond is provided with water pipe that advances above-mentioned sewage continuously and the upflow tube that leads to Aerobic Pond.Be added with anaerobic species in this anaerobic pond, it is the used active sludge of buying from the municipal sewage plant of processing sewage, through the active sludge flora of acclimation shaking culture acquisition.This active sludge flora domestication and culture method is: get the municipal sewage plant and handle the used active sludge of sewage, add above-mentioned sewage, a week is motionless; Carry out natural selection; The flora existence of this condition of being fit to, the flora that is not suitable for this condition is dead, and this process COD value reduces very little.Replace the water in the anaerobic pond with above-mentioned sewage short run after one week, and detect the COD value of water inlet and water outlet, compare its result's difference, understanding domestication situation.When water outlet COD value is reduced to 800mg/l, be fit to the dominant microflora standard end of degraded fish meal wastewater, can carry out disaggregating treatment to organic matter in the sewage.Active mud content is with the control of anaerobic pond drainage water COD value in this anaerobic pond, and promptly the COD value need increase the good active sludge quantity of domestication when being higher than this value between 800-1000mg/l.Above-mentioned active sludge flora is reduced to the COD of above-mentioned water of condensation about 800mg/l.The sewage that in anaerobic pond, has decomposed gets in the Aerobic Pond through the water inlet pipe that links to each other with the anaerobic pond overflow pipe, carries out aerobic aeration and handles.Be added with aerobic bacterial classification in this Aerobic Pond, this active sludge flora domestication and culture method is basic identical with the acclimation method of anaerobic pond flora, that is: buy from the municipal sewage plant and handle the used active sludge of sewage; Add above-mentioned sewage, all left and right sides time is not advanced sewage, but needs continuous aeration; Carry out natural selection; The flora existence of this condition of being fit to, the flora that is not suitable for this condition is dead, and this process COD value reduces very little.Replace the water in the Aerobic Pond with the sewage short run in the anaerobic pond after one week, and detect the COD value of water inlet and water outlet, compare its result's difference, understanding domestication situation.When water outlet COD value is reduced to 200mg/l, be fit to the dominant microflora standard end of degraded fish meal wastewater, can carry out disaggregating treatment to organic matter in the sewage.Active mud content need increase the good active sludge quantity of domestication with the control of Aerobic Pond drainage water COD value in this Aerobic Pond when being higher than this value.15 ℃ of this Aerobic Pond water temperatures, pH value 7-8,40 cubic metres of/cubic metre water of 24 hours aeration rates.Organic matter in the water is carried out disaggregating treatment, make COD reduce to 200mg/l.Get into second pond again through the Aerobic Pond treated water,, filter again water quality is further optimized, can reach in the 100mg/l, realize qualified discharge through the COD of sewage of above-mentioned processing with microbial bacteria mud and the clear water precipitate and separate handled well.
Non-condensable gas treatment unit master of the present invention shown in Figure 1 looks in the section simplified schematic diagram; Blower fan 1 lets non-condensable gas that condenser condenses do not get off through the carrier 3 on the grid 2, and this carrier is corrosion-resistant porous hard materials such as porous ceramic grain or the volcanics grain of water flowing, ventilation.The carrier top is provided with automatic water sprinkler system 4; The gas washing water that sprays drops down onto in the following pond 5 via carrier and grid; Water in this pond can recycle through pump 6; 10 cubic metres/hour of flows more renew water when its water temperature is higher than when 37 ℃ or COD value are higher than 200mg/l, and the water that the COD value is higher than 200mg/l can be used for the biological degradation spray.
Not condensing behind the gas washing is introduced the multi-stage biological decomposition apparatus.Also there is a grid 7 this each unit of placed in-line biodegradation unit, which is provided with above carriers 8 such as identical haydite or volcanics grain, stink substance can suppressed by vector absorption during through carrier layer for non-condensable gas; The carrier top is provided with automatic spraying device 9, and this device at first will have the liquid spraying of active sludge to above-mentioned carrier, and 2 hours intermittent types are to the sewage of carrier spray COD value at 200mg/l then, and control biological degradation temperature is at 15 ℃, and pH value is about 7.Active sludge on the carrier makes it to become odorless gas with the non-condensable gas degraded of absorption.The water that each unit spray of biodegradation unit is got off drops down onto in the following pond via carrier and grid, and the water in this pond can be recycled, and when muddiness, changes.Stink substance is reduced to non-dimensional 1300 through the biodegradation unit odor concentration by original non-dimensional 20000, reaches national atmospheric emission standard and is discharged by venting port 10.
Example 2
Adopt horizontal centrifugation apparatus and disk centrifugal equipment that the oil in the pressed liquor and water and solid substance are separated, make water content in oil less than 1%, impurity is lower than 0.5%, forms hair fish oil and refines; The water and the solid substance that have separated oil get into next procedure and concentrate.The above-mentioned water heating that contains 11% solid substance is concentrated, and controlled temperature vacuumizes vacuum tightness at 100 ℃ :-0.075Mpa, and carry out multiple-effect and concentrate,, the liquid concentrator solid content stops to concentrate when reaching 45%.Above-mentioned liquid concentrator is sprayed onto oven dry together on the press cake.
Above-mentioned boiling, oven dry, concentrate and remove amine equipment and be equipped with fish meal grain catcher and exhaust gas collector; This fish meal grain catcher is separated recovery with the solid granule in the waste vapour earlier; The gas that comes out from trap links to each other with condensing surface through exhaust gas collector; Be condensed into water of condensation through about 80% exhaust steam behind the condensing surface, remaining about 15% is non-condensable gas.30 ℃ of the waste vapour condensate temperatures that is condensed, COD is at 3000mg/l.This water of condensation is sent into the waste water disposal facility biodegrade to be handled.Water of condensation gets into equalizing tank and carries out oil removal and aeration processing, the little fat that possibly sneak among the water of condensation is got rid of, and the condensate temperature that will handle is adjusted to 37 ℃, pH value about 7.Sewage after regulating is carried to anaerobic pond with pump, and this airtight anaerobic pond is provided with water pipe that advances above-mentioned sewage continuously and the upflow tube that leads to Aerobic Pond.Be added with anaerobic species in this anaerobic pond, it is the used active sludge of buying from the municipal sewage plant of processing sewage, through the active sludge flora of acclimation shaking culture acquisition.This active sludge flora domestication and culture method is: get the municipal sewage plant and handle the used active sludge of sewage, add above-mentioned sewage, a week is motionless; Carry out natural selection; The flora existence of this condition of being fit to, the flora that is not suitable for this condition is dead, and this process COD value reduces very little.Replace the water in the anaerobic pond with above-mentioned sewage short run after one week, and detect the COD value of water inlet and water outlet, compare its result's difference, understanding domestication situation.When water outlet COD value is reduced to 1000mg/l, be fit to the dominant microflora standard end of degraded fish meal wastewater, can carry out disaggregating treatment to organic matter in the sewage.Active mud content is with the control of anaerobic pond drainage water COD value in this anaerobic pond, and promptly the COD value need increase the good active sludge quantity of domestication when being higher than this value between 800-1000mg/l.Above-mentioned active sludge flora is reduced to the COD of above-mentioned water of condensation about 1000mg/l.The sewage that in anaerobic pond, has decomposed gets in the Aerobic Pond through the water inlet pipe that links to each other with the anaerobic pond overflow pipe, carries out aerobic aeration and handles.Be added with aerobic bacterial classification in this Aerobic Pond, this active sludge flora domestication and culture method is basic identical with the acclimation method of anaerobic pond flora, that is: buy from the municipal sewage plant and handle the used active sludge of sewage; Add above-mentioned sewage, all left and right sides time is not advanced sewage, but needs continuous aeration; Carry out natural selection; The flora existence of this condition of being fit to, the flora that is not suitable for this condition is dead, and this process COD value reduces very little.Replace the water in the Aerobic Pond with the sewage short run in the anaerobic pond after one week, and detect the COD value of water inlet and water outlet, compare its result's difference, understanding domestication situation.When water outlet COD value is reduced to 200mg/l, be fit to the dominant microflora standard end of degraded fish meal wastewater, can carry out disaggregating treatment to organic matter in the sewage.Active mud content need increase the good active sludge quantity of domestication with the control of Aerobic Pond drainage water COD value in this Aerobic Pond when being higher than this value.35 ℃ of this Aerobic Pond water temperatures, pH value 7-8,50 cubic metres of/cubic metre water of 24 hours aeration rates.Organic matter in the water is carried out disaggregating treatment, make COD reduce to 200mg/l.Get into second pond again through the Aerobic Pond treated water,, filter again water quality is further optimized, can reach in the 100mg/l, realize qualified discharge through the COD of sewage of above-mentioned processing with microbial bacteria mud and the clear water precipitate and separate handled well.
Non-condensable gas treatment unit master of the present invention shown in Figure 1 looks in the section simplified schematic diagram; Blower fan 1 lets non-condensable gas that condenser condenses do not get off through the carrier 3 on the grid 2, and this carrier is corrosion-resistant porous hard materials such as porous ceramic grain or the volcanics grain of water flowing, ventilation.The carrier top is provided with automatic water sprinkler system 4; The gas washing water that sprays drops down onto in the following pond 5 via carrier and grid; Water in this pond can recycle through pump 6; 10 cubic metres/hour of flows more renew water when its water temperature is higher than when 38 ℃ or COD value are higher than 300mg/l, and the water that the COD value is higher than 300mg/l can be used for the biological degradation spray.
Not condensing behind the gas washing is introduced the multi-stage biological decomposition apparatus.Also there is a grid 7 this each unit of placed in-line biodegradation unit, which is provided with above carriers 8 such as identical haydite or volcanics grain, stink substance can suppressed by vector absorption during through carrier layer for non-condensable gas; The carrier top is provided with automatic spraying device 9, and this device at first will have the liquid spraying of active sludge to above-mentioned carrier, and 3 hours intermittent types are to the sewage of carrier spray COD value at 300mg/l then, and control biological degradation temperature is at 30 ℃, and pH value is about 7.Active sludge on the carrier makes it to become odorless gas with the non-condensable gas degraded of absorption.The water that each unit spray of biodegradation unit is got off drops down onto in the following pond via carrier and grid, and the water in this pond can be recycled, and when muddiness, changes.Stink substance is reduced to non-dimensional 1000 through the biodegradation unit odor concentration by original non-dimensional 20000, reaches national atmospheric emission standard and is discharged by venting port 10.
Claims (6)
1. a fish meal is processed the method for treating waste liquid that produces, and it is characterized in that:
(1), separate: with centrifugation apparatus the oil in the pressed liquor and water and solid substance are separated, make water content in oil less than 1%, impurity is lower than 0.5%, forms hair fish oil and refines; The water and the solid substance that have separated oil get into road enrichment process down;
(2), concentrate: the above-mentioned water heating that contains a small amount of solid substance is concentrated, when the liquid concentrator solid content reaches 45-55%, stop to concentrate;
(3), oven dry: above-mentioned liquid concentrator is sprayed onto oven dry together on the press cake.
2. the method for treating waste liquid that fish meal according to claim 1 processing produces, it is characterized in that: the waste liquid thickening temperature is controlled at 70-100 ℃, vacuum degree control-0.075 ~-0.095Mpa.
3. a fish meal is processed the waste gas processing method that produces, and it is characterized in that:
(1), condensation: boiling, oven dry, the concentrated fish meal grain catcher that removes amine equipment that reaches are separated recovery with the solid granule in the waste vapour earlier, and the gas that comes out from trap links to each other with condensing surface through exhaust gas collector;
(2), water of condensation handles: water of condensation is sent into the waste water disposal facility biodegrade handles,
(a), water of condensation gets into that equalizing tank carries out oil removal and aeration is handled, and the little fat that possibly sneak among the water of condensation is got rid of, and the condensate temperature that will handle is adjusted to and is not higher than 40 ℃, pH value about 7;
(b), the sewage after will regulating carries to anaerobic pond with pump, adds anaerobic species in this anaerobic pond, it is to handle the used active sludge flora of sewage through municipal sewage plant of domestication;
(c), the decomposed sewage of anaerobic pond gets into Aerobic Pond; Carrying out aerobic aeration handles; And in Aerobic Pond, being added with aerobic bacterial classification, it is to handle the used active sludge flora of sewage, 15-35 ℃ of this Aerobic Pond water temperature through the municipal sewage plant of domestication; PH value 7-8,36-60 cubic metres of/cubic metre water of 24 hours aeration rates;
(d), get into second pond and filtering basin again through the Aerobic Pond treated water;
(3), non-condensable gas is handled
(a), gas washing: through the carrier on the grid, the carrier top is provided with automatic water sprinkler system with non-condensable gas, and condensing is not carried out gas washing, makes gas temperature not be higher than 38 ℃, moisture-saturated;
(b), biological degradation: the not condensing behind gas washing gets into the multi-stage biological decomposition apparatus; Also there is a grid this each unit of placed in-line biodegradation unit, which is provided with above identical carrier, carrier top is provided with automatic spraying device; This device at first will have the liquid spraying of active sludge to above-mentioned carrier; 2-3 hour intermittent type is to the sewage of carrier spray COD value at 200-300mg/l then, and control biological degradation temperature is at 30 ℃, and pH value is about 7.
4. process the waste gas processing method that produces based on the described fish meal of claim 3; It is characterized in that: activated sludge flora domestication and culture method is in the above-mentioned anaerobic pond: get the municipal sewage plant and handle the used activated sludge of sanitary sewage; Add above-mentioned sewage, a week is motionless, carries out natural selection; Replace the water in the anaerobic pond with above-mentioned sewage small lot after one week, and detect the COD value of water inlet and water outlet, when water outlet COD value is reduced to 800-1000mg/l, the dominant microflora standard end of the suitable fish meal wastewater of degrading.
5. the waste gas processing method that fish meal processing according to claim 3 produces; It is characterized in that: active sludge flora domestication and culture method is in the above-mentioned Aerobic Pond: get the municipal sewage plant and handle the used active sludge of sewage; Add above-mentioned sewage, a week is motionless, carries out natural selection; Replace the water in (detesting) Aerobic Pond with anaerobic pond sewage (above-mentioned sewage) short run after one week, and detect the COD value of water inlet and water outlet, when water outlet COD value is reduced to 800-1000mg/l, the dominant microflora standard end of the suitable fish meal wastewater of degrading.
6. process the waste gas processing method that produces according to claim 4 or 5 described fish meal; It is characterized in that: the water that each unit spray of biodegradation unit is got off drops down onto in the following pond via carrier and grid; Water in this pond can be recycled, and when muddiness, changes.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102895794A (en) * | 2012-09-27 | 2013-01-30 | 无锡市华亨海洋生物工程有限公司 | Device for treating fish meal odor |
| CN104824348A (en) * | 2015-05-29 | 2015-08-12 | 东莞市林氏生物技术股份有限公司 | High protein full-skimmed fish meal and production method thereof |
| CN104824720A (en) * | 2015-05-29 | 2015-08-12 | 东莞市林氏生物技术股份有限公司 | Semi-skimmed fish meal high in calcium and phosphorus content and preparing method thereof |
| CN106492611A (en) * | 2016-11-23 | 2017-03-15 | 威海丰泰新材料科技股份有限公司 | A kind of fish meal factory condensation waste gas and the pollution-freeization processing method of condensation waste water |
| CN107088354A (en) * | 2017-06-26 | 2017-08-25 | 深圳市友健科技有限公司 | Biophotolysis purifier |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1657444A (en) * | 2005-03-09 | 2005-08-24 | 西北农林科技大学 | Super-concentrated algae bacterium micro-ecological balance suspension type water quality modifier and preparation method thereof |
| JP2009061391A (en) * | 2007-09-06 | 2009-03-26 | Tadayuki Genchiyou | Water quality improvement method of city water |
| CN101367581A (en) * | 2008-09-24 | 2009-02-18 | 武汉合缘绿色生物工程有限公司 | Composite microorganism formulation for controlling excessive multiplication of blue-green algae and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102895794A (en) * | 2012-09-27 | 2013-01-30 | 无锡市华亨海洋生物工程有限公司 | Device for treating fish meal odor |
| CN102895794B (en) * | 2012-09-27 | 2015-03-11 | 中海海洋无锡海洋工程装备有限公司 | Device for treating fish meal odor |
| CN104824348A (en) * | 2015-05-29 | 2015-08-12 | 东莞市林氏生物技术股份有限公司 | High protein full-skimmed fish meal and production method thereof |
| CN104824720A (en) * | 2015-05-29 | 2015-08-12 | 东莞市林氏生物技术股份有限公司 | Semi-skimmed fish meal high in calcium and phosphorus content and preparing method thereof |
| CN106492611A (en) * | 2016-11-23 | 2017-03-15 | 威海丰泰新材料科技股份有限公司 | A kind of fish meal factory condensation waste gas and the pollution-freeization processing method of condensation waste water |
| CN107088354A (en) * | 2017-06-26 | 2017-08-25 | 深圳市友健科技有限公司 | Biophotolysis purifier |
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| CN102381797B (en) | 2013-04-17 |
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