CN103508642B - Device for treating high-fat food processing wastewater - Google Patents
Device for treating high-fat food processing wastewater Download PDFInfo
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- CN103508642B CN103508642B CN201310515257.6A CN201310515257A CN103508642B CN 103508642 B CN103508642 B CN 103508642B CN 201310515257 A CN201310515257 A CN 201310515257A CN 103508642 B CN103508642 B CN 103508642B
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Abstract
The invention relates to a device for treating high-fat food processing wastewater. The device comprises a coarse screen, a fine screen, a water-collecting tank, an accident pool, an anaerobic baffled reactor (ABR), a coagulation tank, an air floatation tank, a biological aerated filter (BAF), a coagulation reaction tank, a filter cloth filter tank, a contact tank, a sludge tank, a mechanical concentration tank, a sludge dehydrator, a methane desulfuration and incineration system and a tail gas deodorization system. Based on the waster quality characteristic of high fat concentration of the food processing wastewater, animal and plant floating oil is removed through the multi-lattice structure of the ABR; lime and poly aluminum chloride (PAC) are added to the wastewater, so as to enable organic pollutants such as animal and plant oil in the wastewater to form floccules; phosphate radicals in the wastewater react with calcium ions and aluminum ions in the waster water to generate phosphate precipitate, and the phosphate precipitate is removed; the residual fat is adhered to the impurity floccule particles by a large quantity of microbubbles generated by the air floatation tank to form floccules which have the specific gravity less than that of water and floats on the water, so that most organic pollutants such as animal and plant fat are removed, the oil index reaches the standard, and the load on the subsequent BAF biochemical treatment is reduced.
Description
Technical field
The present invention relates to a kind of high Fat wastewater treatment device, particularly relate to the high fatty foods processing waste water treatment unit of a kind of ABR anaerobic technology, air flotation technology and BAF technology, belong to the field for the treatment of of water pollution of environmental engineering.
Background technology
Raw materials for food industry is extensive, and goods are of a great variety, and the course of processing will use large water gaging, therefore have a lot of refuse to discharge as the form of sewage.The water yield, the water quality of discharging waste water are widely different.In waste water, principal pollutant have: (1) swims in solid matter in waste water, as dish leaf, pericarp, meat mincing, fowl plumage etc.; (2) material be suspended in waste water has grease, protein, starch, colloidalmaterial etc.; (3) be dissolved in the acid in waste water, alkali, salt, carbohydrate etc., particularly phosphorus compound and nitrogen compound content high; (4) silt particle and other organism etc. carried secretly of raw material; (5) cause a disease bacterium etc.Because food variety is various, raw material sources are extensive, and food-processing sewage has suspended substance, fat content is high, and heavy metal ion is many, COD and BOD numerical value is large, and water yield vary within wide limits, nitrogen, phosphorus compound content are high, the more high water quality characteristics of water temperature.
At present, food processing wastewater treatment process mainly contains: (1) physical treatment process: mainly contain sieving, skim, adjustment, precipitation, air supporting, centrifugation, filtration, micro-filtration etc.(2) method of chemical treatment: mainly contain neutralization, coagulation, electrolysis, redox, ion-exchange, membrane separation process etc.(3) biological treatment: main aerobic method, anaerobic process, stabilization pond, land treatment systems and the combination by aforesaid method.
The treatment process of food processing wastewater has multiple, but a kind of method individual curing often poor effect, need the water quality characteristics for different trade effluent, and the composition of pollutent is different, takes multiple technologies combination treatment, just can obtain desirable treatment effect.
Summary of the invention
The object of the invention is to the defects such as long for design process flow existing in the process of high fatty foods processing waste water, treatment system structure is too complicated, working cost is high, waste discharge after process is not up to standard, there is provided a kind of to combine based on ABR anaerobic technology, air flotation technology and BAF technology, remove the effective of grease, COD, ammonia nitrogen and phosphorus, cost is lower, the simple high fatty foods processing waste water treatment unit for the treatment of system.
High fatty foods processing waste water treatment unit is provided with coarse rack, fine fack, water collecting basin, accident pool, ABR reactor, coagulation basin, air flotation pool, BAF (BAF is called for short BAF), coagulation reaction tank, filtering cloth filtering pool, contact tank, sludge sump, mechanical thickening groove, sludge dewatering equipment, biogas desulfurization and incineration system, tail gas deodoration system, the import of above-mentioned coarse rack connects with the outlet of high fatty foods processing waste water, coarse rack water outlet connects with fine fack water-in, fine fack water outlet one tunnel connects with water collecting basin water-in, another road connects with accident pool water-in, accident pool water outlet connects with water collecting basin water-in, water collecting basin water outlet connects with ABR reactor water-in, ABR reactor water outlet connects with coagulation basin water-in, coagulation basin water outlet connects with air flotation pool water-in, air flotation pool water outlet connects with BAF water-in, BAF water outlet connects with coagulation reaction tank water-in, coagulation reaction tank water outlet connects with filtering cloth filtering pool water-in, filtering cloth filtering pool water outlet connects with contact tank water-in, the throw out (i.e. mud) of ABR reactor, coagulation basin, coagulation reaction tank and scum silica frost (i.e. mud) outlet of air flotation pool all connect with sludge sump import, sludge sump outlet connects with the import of mechanical thickening groove, and the outlet of mechanical thickening groove connects with sludge dewatering equipment import, the methane outlet of ABR reactor connects with biogas desulfurization and incineration system, the offgas outlet of water collecting basin, ABR reactor and air flotation pool all connects with tail gas deodoration system.
More specifically:
Above-mentioned air flotation pool adopts By Bubble-floating Method to process waste water, and this By Bubble-floating Method is the one in gas distribution By Bubble-floating Method, electric floating method, biology and chemical floatation treatment or dissolved air flotation.
Above-mentioned coagulation basin, coagulation reaction tank and contact tank are all with dispensing system and medicine system.
Above-mentioned sludge dewatering equipment is the one in folded spiral shell formula water extracter, vacuum filtering and dewatering machine, filter pressing dehydrator or centrifuge.
Technical scheme of the present invention is: high fatty foods processing waste water → slagging-off → ABR anaerobic treatment → air supporting → BAF biochemistry → filter-cloth filtering → sterilization → water outlet.
High fatty foods processing waste water is as shown in table 1 through the effect of above technical scheme process:
The effect of table 1 high fatty foods processing waste water each processing unit
Adopt the present invention to food wastewater process, make its energy consumption reaching " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) one-level A standard be :≤0.44 KWh/ton; The Waste water treatment medicament consumption for the treatment of process of the present invention is :≤0.24 yuan/ton.
The present invention compared with the prior art, has following outstanding advantages:
(1) for the water quality characteristics that grease concentration in food processing wastewater is high, first remove animals and plants oil slick by the structural form of the many lattices of ABR reactor, again by feeding lime and PAC, animals and plants wet goods organic pollutant in waste water is made to form flco, phosphate radical in waste water and calcium ion and aluminum ion react and generate calcium phosphate precipitation and remove, then a large amount of micro bubbles is produced by air flotation pool, remaining grease is impelled to adhere on impurity floc particle, form the flocs float water surface that proportion is less than water, thus remove the organic pollutants such as most of animal-plant oil, not only make oils index up to standard, and reduce the load of follow-up BAF biochemical treatment.
(2) by the nitration denitrification effect of microorganism in BAF, the ammonia nitrogen in food processing wastewater and total nitrogen can effectively be removed.
(3) first by coagulation basin feeding lime and PAC, the phosphate radical in waste water and calcium ion and aluminum ion are reacted generate calcium phosphate precipitation to remove, then in follow-up coagulation reaction tank, add the further chemical dephosphorization of PAC, guarantee total phosphorus≤0.5mg/L.
(4) high fatty foods processing waste water is by process of the present invention, and effluent quality can reach the one-level A standard in national sewage comprehensive emission standard (GB8978-1996).
(5) biogas that ABR reactor anaerobion produces enters tail gas deodoration system again after biogas desulfurization and incineration system process, and the gas that produces of water collecting basin and air flotation pool also all with enter the process of tail gas deodoration system, not only resource utilization recycling is carried out to the biogas that anaerobism produces, and the stench produced in wastewater treatment process is significantly reduced by tail gas deodoration system, ensure ambient air quality.
Accompanying drawing explanation
Fig. 1 is the structure composition schematic diagram of the above-mentioned high fatty foods processing waste water treatment unit embodiment of the present invention.
Embodiment
1 the specific embodiment of the present invention is described with reference to the accompanying drawings.
With reference to Fig. 1, high fatty foods processing waste water treatment unit, is characterized in that it comprises coarse rack 1, fine fack 2, water collecting basin 3, accident pool 4, ABR reactor 5, coagulation basin 6, air flotation pool 7, BAF (BAF) 8, filtering cloth filtering pool 9, contact tank 10, sludge sump 11, mechanical thickening groove 12, sludge dewatering equipment 13, coagulation reaction tank 14, biogas desulfurization and incineration system 15, tail gas deodoration system 16, makes up a prescription and medicine system A, make up a prescription and medicine system B, to make up a prescription and medicine system C.
The import of above-mentioned coarse rack 1 connects with the outlet of high fatty foods processing waste water, coarse rack 1 water outlet connects with fine fack 2 water-in, fine fack 2 water outlet one tunnel connects with water collecting basin 3 water-in, another road connects with accident pool 4 water-in, accident pool 4 water outlet connects with water collecting basin 3 water-in, water collecting basin 3 water outlet connects with ABR reactor 5 water-in, ABR reactor 5 water outlet connects with coagulation basin 6 water-in, coagulation basin 6 water outlet connects with air flotation pool 7 water-in, air flotation pool 7 water outlet connects with BAF 8 water-in, BAF 8 water outlet connects coagulation reaction tank 14 water outlet with coagulation reaction tank 14 water-in and connects with filtering cloth filtering pool 9 water-in, filtering cloth filtering pool 9 water outlet connects with contact tank 10 water-in, the throw out (i.e. mud) of ABR reactor 5, coagulation basin 6, coagulation reaction tank 14 and scum silica frost (i.e. mud) outlet of air flotation pool 7 all connect with sludge sump 11 import, sludge sump 11 outlet connects with mechanical thickening groove 12 import, and mechanical thickening groove 12 outlet connects with sludge dewatering equipment 13 import, the methane outlet of ABR reactor 5 connects with biogas desulfurization and incineration system 15, the offgas outlet of water collecting basin 3, ABR reactor 5 and air flotation pool 7 all connects with tail gas deodoration system 16.
The present invention is the design to high fatty foods processing waste water treatment unit completed after the composition to existing high fatty foods processing waste water, character and existing processing scheme go deep into the comparative study of system, it by the integrated use of the technology such as ABR, air supporting and BAF, thus forms a kind for the treatment of unit being particularly suitable for high fatty foods processing waste water.
1 the specific embodiment of the present invention is described with reference to the accompanying drawings.
Embodiment 1
10 ton per day height fatty foods processing wastewater treatment methods.
Above-mentioned high fatty foods processing waste water water-quality guideline is as shown in table 2 after measured.
The water-quality guideline of the high fatty foods processing waste water of table 2
| Sequence number | Project | Unit | Measured value | Sequence number | Project | Unit | Measured value |
| 1 | COD Cr | mg/L | 1800 | 5 | Total phosphorus | mg/L | 8 |
| 2 | BOD 5 | mg/L | 800 | 6 | Total nitrogen | mg/L | 60 |
| 3 | SS | mg/L | 400 | 7 | Oils | mg/L | 120 |
| 4 | Ammonia nitrogen | mg/L | 60 |
(1) remove the gred
High fatty foods processing waste water enters coarse rack 1 and fine fack 2 after pipeline is collected, first remove cursory thing thick in waste water by coarse rack 1, then the suspended substance of most of insolubility in water is removed further by fine fack 2, what produce transports outward every slag packing, prevents suspended substance from blocking follow-up pipe, pump and structures; Under normal operation, waste water enters water collecting basin 3; During generation accident, waste water then enters accident pool 4, discharge water when being produced with storage accident by accident pool 4, to enter water collecting basin 3 again after subsequent dilution process, prevents high density load to the impact of subsequent treatment process;
(2) ABR anaerobic treatment
Water collecting basin 3 water outlet promotes through lift pump and enters ABR reactor 5, utilizes many cell structure of ABR reactor 5 to remove oil slick on the one hand; On the other hand, in ABR reactor 5, under anerobe, the hold concurrently absorption of oxygen bacterium, fermentation, methane phase acting in conjunction, organic acid is resolved into methane and carbon dioxide, reduce COD;
(3) air supporting
ABR reactor 5 water outlet flows into coagulation basin 6, by the lime first adding 5ppm with medicine system A under agitation that makes up a prescription, the PAC adding 5ppm again carries out coagulating treatment, enter air flotation pool 7 after finally adding the lime adjustment pH to 8.0 of 60ppm and carry out dissolved air flotation, by oil removal by air bubbling dephosphorization, the low SS of a step-down of going forward side by side;
(4) BAF is biochemical
Air flotation pool water outlet enters BAF 8, is purified waste water by oxidation degradation effect, removes COD, ammonia nitrogen and total nitrogen further, and the effect simultaneously playing filtration removes SS further, is purified waste water;
(5) coagulation
BAF 8 water outlet is first flow automatically and is entered coagulation reaction tank 14;
(6) filter
The water outlet gravity flow of coagulation reaction tank 14 enters filtering cloth filtering pool 9 and carries out filtering separation, completes the removal of total phosphorus;
(7) sterilize
Filtering cloth filtering pool 9 water outlet enter contact tank 10 by make up a prescription and medicine system C carry out disinfection by chlorine dioxide, sterilization and disinfection is carried out to waste water; Contact tank 10 doubles as backwash pond simultaneously;
(8) sludge treatment
The scum silica frost (i.e. mud) of air flotation pool 7 generation in the precipitation (i.e. mud) that in the coagulation basin 6 in the ABR reactor 5 of step (2) ABR anaerobic treatment, step (3) air supporting, step (5) coagulation, coagulation reaction tank 14 produces and step (3) air supporting all enters sludge sump 11 by pipeline, then reducing sludge volume is made through the dehydration of mechanical thickening groove 12 and sludge dewatering equipment 13 successively, after dehydration, dry mud carries out transporting outward or compost treatment, and filtrate is then back to the water collecting basin 3 in step (1) slagging-off; Above-mentioned sludge dewatering equipment 13 is centrifuge;
(9) gas processing
The tail gas of the biogas that in step (2) anaerobic treatment, ABR reactor 5 anaerobion produces after biogas desulfurization and incineration system 15 process enters tail gas deodoration system 16 and processes; Meanwhile, the gas that the water collecting basin 3 in step (1) slagging-off and air flotation pool 7 in step (3) air supporting produce also all with enter tail gas deodoration system 16 and process.
Effect after each processing unit process is as table 3.
Effect after the process of table 3 high fatty foods processing waste water
Embodiment 2
40 ton per day height fatty foods processing wastewater treatment methods.
Above-mentioned high fatty foods processing waste water water-quality guideline is as shown in table 4 after measured.
The water-quality guideline of the high fatty foods processing waste water of table 4
| Sequence number | Project | Unit | Measured value | Sequence number | Project | Unit | Measured value |
| 1 | COD Cr | mg/L | 2000 | 5 | Total phosphorus | mg/L | 10 |
| 2 | BOD 5 | mg/L | 1200 | 6 | Total nitrogen | mg/L | 80 |
| 3 | SS | mg/L | 500 | 7 | Oils | mg/L | 150 |
| 4 | Ammonia nitrogen | mg/L | 80 |
(1) remove the gred
High fatty foods processing waste water enters coarse rack 1 and fine fack 2 after pipeline is collected, first remove cursory thing thick in waste water by coarse rack 1, then the suspended substance of most of insolubility in water is removed further by fine fack 2, what produce transports outward every slag packing, prevents suspended substance from blocking follow-up pipe, pump and structures; Under normal operation, waste water enters water collecting basin 3; During generation accident, waste water then enters accident pool 4, discharge water when being produced with storage accident by accident pool 4, to enter water collecting basin 3 again after subsequent dilution process, prevents high density load to the impact of subsequent treatment process;
(2) ABR anaerobic treatment
Water collecting basin 3 water outlet promotes through lift pump and enters ABR reactor 5, utilizes many cell structure of ABR reactor 5 to remove oil slick on the one hand; On the other hand, in ABR reactor 5, under anerobe, the hold concurrently absorption of oxygen bacterium, fermentation, methane phase acting in conjunction, organic acid is resolved into methane and carbon dioxide, reduce COD;
(3) air supporting
ABR reactor 5 water outlet flows into coagulation basin 6, by the lime first adding 75ppm with medicine system A under agitation that makes up a prescription, the PAC adding 60ppm again carries out coagulating treatment, enter air flotation pool 7 after finally adding the lime adjustment pH to 8.5 of 180ppm and carry out dissolved air flotation, by oil removal by air bubbling dephosphorization, the low SS of a step-down of going forward side by side;
(4) BAF is biochemical
Air flotation pool 7 water outlet enters BAF 8, is purified waste water by oxidation degradation effect, removes COD, ammonia nitrogen and total nitrogen further, and the effect simultaneously playing filtration removes SS further, is purified waste water;
(5) coagulation
BAF 8 water outlet is first flow automatically and is entered coagulation reaction tank 14, by the PAC adding 20ppm with medicine system B that makes up a prescription, carries out chemical dephosphorization, to guarantee that total phosphorus is up to standard;
(6) filter
The water outlet gravity flow of coagulation reaction tank 14 enters filtering cloth filtering pool 9 and carries out filtering separation, completes the removal of total phosphorus;
(7) sterilize
Filtering cloth filtering pool 9 water outlet enter contact tank 10 by make up a prescription and medicine system C carry out disinfection by chlorine dioxide, sterilization and disinfection is carried out to waste water; Contact tank 10 doubles as backwash pond simultaneously;
(8) sludge treatment
The scum silica frost (i.e. mud) of air flotation pool 7 generation in the precipitation (i.e. mud) that in the coagulation basin 6 in the ABR reactor 5 of step (2) ABR anaerobic treatment, step (3) air supporting, step (5) coagulation, coagulation reaction tank 14 produces and step (3) air supporting all enters sludge sump 11 by pipeline, then reducing sludge volume is made through the dehydration of mechanical thickening groove 12 and sludge dewatering equipment 13 successively, after dehydration, dry mud carries out transporting outward or compost treatment, and filtrate is then back to the water collecting basin 3 in step (1) slagging-off; Above-mentioned sludge dewatering equipment 13 is filter pressing dehydrator;
(9) gas processing
The tail gas of the biogas that in step (2) anaerobic treatment, ABR reactor 5 anaerobion produces after biogas desulfurization and incineration system 15 process enters tail gas deodoration system 16 and processes; Meanwhile, the gas that the water collecting basin 3 in step (1) slagging-off and air flotation pool 7 in step (3) air supporting produce also all with enter tail gas deodoration system 16 and process.
Effect after each processing unit process is as table 5.
Effect after the process of table 5 high fatty foods processing waste water
Embodiment 3
12000 ton per day peanut milk series foods processing waste water process engineerings.
Certain above-mentioned peanut milk series foods processing waste water water-quality guideline is as shown in table 6 after measured.
The water-quality guideline of certain peanut milk series foods processing waste water of table 6
| Sequence number | Project | Unit | Measured value | Sequence number | Project | Unit | Measured value |
| 1 | COD Cr | mg/L | 1200 | 5 | Total phosphorus | mg/L | 5 |
| 2 | BOD 5 | mg/L | 600 | 6 | Total nitrogen | mg/L | 50 |
| 3 | SS | mg/L | 300 | 7 | Oils | mg/L | 100 |
| 4 | Ammonia nitrogen | mg/L | 40 |
(1) remove the gred
High fatty foods processing waste water enters coarse rack 1 and fine fack 2 after pipeline is collected, first remove cursory thing thick in waste water by coarse rack 1, then the suspended substance of most of insolubility in water is removed further by fine fack 2, what produce transports outward every slag packing, prevents suspended substance from blocking follow-up pipe, pump and structures; Under normal operation, waste water enters water collecting basin 3; During generation accident, waste water then enters accident pool 4, discharge water when being produced with storage accident by accident pool 4, to enter water collecting basin 3 again after subsequent dilution process, prevents high density load to the impact of subsequent treatment process;
(2) ABR anaerobic treatment
Water collecting basin 3 water outlet promotes through lift pump and enters ABR reactor 5, utilizes many cell structure of ABR reactor 5 to remove oil slick on the one hand; On the other hand, in ABR reactor 5, under anerobe, the hold concurrently absorption of oxygen bacterium, fermentation, methane phase acting in conjunction, organic acid is resolved into methane and carbon dioxide, reduce COD;
(3) air supporting
ABR reactor 5 water outlet flows into coagulation basin 6, by the lime first adding 50ppm with medicine system A under agitation that makes up a prescription, the PAC adding 40ppm again carries out coagulating treatment, enter air flotation pool 7 after finally adding the lime adjustment pH to 8.2 of 125ppm and carry out dissolved air flotation, by oil removal by air bubbling dephosphorization, the low SS of a step-down of going forward side by side;
(4) BAF is biochemical
Air flotation pool water outlet enters BAF 8, is purified waste water by oxidation degradation effect, removes COD, ammonia nitrogen and total nitrogen further, and the effect simultaneously playing filtration removes SS further, is purified waste water;
(5) coagulation
BAF 8 water outlet is first flow automatically and is entered coagulation reaction tank 14, by the PAC adding 10ppm with medicine system B that makes up a prescription, carries out chemical dephosphorization, to guarantee that total phosphorus is up to standard;
(6) filter
The water outlet gravity flow of coagulation reaction tank 14 enters filtering cloth filtering pool 9 and carries out filtering separation, completes the removal of total phosphorus;
(7) sterilize
Filtering cloth filtering pool 9 water outlet enter contact tank 10 by make up a prescription and medicine system C carry out disinfection by chlorine dioxide, sterilization and disinfection is carried out to waste water; Contact tank 10 doubles as backwash pond simultaneously;
(8) sludge treatment
The scum silica frost (i.e. mud) of air flotation pool 7 generation in the precipitation (i.e. mud) that in the coagulation basin 6 in the ABR reactor 5 of step (2) ABR anaerobic treatment, step (3) air supporting, step (5) coagulation, coagulation reaction tank 14 produces and step (3) air supporting all enters sludge sump 11 by pipeline, then reducing sludge volume is made through the dehydration of mechanical thickening groove 12 and sludge dewatering equipment 13 successively, after dehydration, dry mud carries out transporting outward or compost treatment, and filtrate is then back to the water collecting basin 3 in step (1) slagging-off; Above-mentioned sludge dewatering equipment 13 is folded spiral shell formula water extracter;
(9) gas processing
The tail gas of the biogas that in step (2) anaerobic treatment, ABR reactor 5 anaerobion produces after biogas desulfurization and incineration system 15 process enters tail gas deodoration system 16 and processes; Meanwhile, the gas that the water collecting basin 3 in step (1) slagging-off and air flotation pool 7 in step (3) air supporting produce also all with enter tail gas deodoration system 16 and process.
Effect after each processing unit process is as table 7.
Effect after the process of table 7 high fatty foods processing waste water
This engineering total installation of generating capacity 379.48kW, actual motion power 220.55kW, then this engineering ton water power consumption 0.44 degree, ton charges for water and electricity 0.35 yuan/ton of water;
The medicament expense of this engineering is:
Water inlet pH value regulates dosing expense to be 0.05 yuan/ton of water (Lime-Injecting amount 125 mg/L);
Sludge conditioner cationic PAM is pressed 8.3kg/t dewatered sludge and is calculated, native system over dry sludge quantity 2.06 tons/day, and amounting to into a ton water cost is 0.05 yuan/ton of water;
Air supporting dosing is PAC40ppm, lime 50ppm, coagulation reaction tank dosing PAC10ppm, and expense is 0.10 yuan/ton of water;
Disinfection by chlorine dioxide medicament expense is 0.04 yuan/ton of water;
Medicament expense total=0.05+0.05+0.10+0.04=0.24 yuan/ton waste water;
The direct at full capacity working cost of this engineering is:
Direct expenses=0.35+0.24=0.59 yuan/ton water during oepration at full load.
Claims (3)
1. high fatty foods processing waste water treatment unit, is characterized in that it comprises coarse rack, fine fack, water collecting basin, accident pool, ABR reactor, coagulation basin, air flotation pool, BAF, coagulation reaction tank, filtering cloth filtering pool, contact tank, sludge sump, mechanical thickening groove, sludge dewatering equipment, biogas desulfurization and incineration system, tail gas deodoration system;
The import of described coarse rack connects with the outlet of high fatty foods processing waste water, coarse rack water outlet connects with fine fack water-in, fine fack water outlet one tunnel connects with water collecting basin water-in, another road connects with accident pool water-in, accident pool water outlet connects with water collecting basin water-in, water collecting basin water outlet connects with ABR reactor water-in, ABR reactor water outlet connects with coagulation basin water-in, coagulation basin water outlet connects with air flotation pool water-in, air flotation pool water outlet connects with BAF water-in, effluent of aeration biological filter mouth connects with coagulation reaction tank water-in, coagulation reaction tank water outlet connects with filtering cloth filtering pool water-in, filtering cloth filtering pool water outlet connects with contact tank water-in, the throw out of ABR reactor, coagulation basin, coagulation reaction tank and the scum silica frost outlet of air flotation pool all connect with sludge sump import, and sludge sump outlet connects with the import of mechanical thickening groove, and the outlet of mechanical thickening groove connects with sludge dewatering equipment import, the methane outlet of ABR reactor connects with biogas desulfurization and incineration system, the offgas outlet of water collecting basin, ABR reactor and air flotation pool all connects with tail gas deodoration system.
2. high fatty foods processing waste water treatment unit as claimed in claim 1, is characterized in that: described coagulation basin, coagulation reaction tank and contact tank are all with dispensing system and medicine system.
3. high fatty foods processing waste water treatment unit as claimed in claim 1, is characterized in that: described sludge dewatering equipment is the one in folded spiral shell formula water extracter, vacuum filtering and dewatering machine, filter pressing dehydrator or centrifuge.
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