CN102351386B - Potato type ethanol wastewater treatment method and system - Google Patents

Potato type ethanol wastewater treatment method and system Download PDF

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Publication number
CN102351386B
CN102351386B CN2011102722051A CN201110272205A CN102351386B CN 102351386 B CN102351386 B CN 102351386B CN 2011102722051 A CN2011102722051 A CN 2011102722051A CN 201110272205 A CN201110272205 A CN 201110272205A CN 102351386 B CN102351386 B CN 102351386B
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pipeline
sludge
air flotation
mud
water outlet
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CN102351386A (en
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杨金生
柳毅
申东明
王成军
谭海峰
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JIHUA GROUP CO
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JIHUA GROUP CO
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Abstract

The invention relates to a potato type ethanol wastewater treatment method and system. The method comprises the following steps: carrying out high-temperature anaerobic reaction on the effluent which is obtained by desanding and homogenizing high-concentration sewage, introducing biogas residue into a sludge system via rotating grill, carrying out air flotation and thin film filtration on the effluent to reduce the concentration of the suspended substances in the effluent to 50-100mg/L, and separately returning the sludge to a sand basin I and a sludge removing system; removing PO4<3->, NH4<+> and Mg<2+> in the effluent obtained after the thin film filtration via a struvite reaction tank, and discharging the struvite precipitate; homogenizing the effluent with the medium-temperature anaerobic temperature of 33-37 DEG C and the COD (chemical oxygen demand) about 3000mg/L and the low-concentration sewage after desanding, and then entering an aerobic biochemical and aerobic MBR (membrane biological reactor) so as to enable the concentration of the sludge to be 10-15mg/L, the dissolved oxygen to be 4-6mg/L and the COD in the effluent of the aerobic MBR to be 100-150mg/L; and carrying out O3 oxidization and biological active carbon reaction on the effluent of the aerobic MBR, wherein the adding amount of O3 is 20-50mg/L, the dissolved oxygen is 1-3mg/L, and the COD is 50-60mg/L.

Description

Potato alcohol wastewater treatment process and system
Technical field
The present invention is applicable to potato alcohol wastewater treatment process and system.
Background technology
Potato alcohol wastewater is handled at present, adopts remove sand groove, high temperature anaerobic, screen filtration, air supporting (deposition), anaeration in normal temperature, air supporting (deposition), aerobic biochemical, advanced treatment system usually.This method can not cope well to suspended substance, causes the aerobic section clearance lower; Simultaneity factor is interior owing to have mg ion, phosphate anion, ammonia nitrogen ion; The struvite dirt that forms also influences the normal operation of biochemical treatment; Total system is lower to nitrogen, tp removal rate, and total water outlet nitrogen, phosphorus are still higher, and difficulty reaches below the first discharge standard.
Summary of the invention
The objective of the invention is in order to solve the problem that prior art exists; A kind of potato alcohol wastewater treatment process is provided; Adding medicine outside sludge disposal need add a small amount of PAM, not needing, the struvite scale problems of having used the struvite device solves uses ozone oxidation to improve wastewater biodegradability; It is below the mark that water outlet can reach " urban wastewater treatment firm " GB18918-2002 one-level B, the most of reuse of processed waste water.
Technical scheme of the present invention is: a kind of potato alcohol wastewater treatment process, high-concentration sewage get into the equalizing tank I and carry out homogeneous after desilting is removed suspended substance, and water outlet gets into the high temperature anaerobic reaction and removes pollutent, and the high temperature anaerobic temperature is controlled at 55~57 ℃; High temperature anaerobic reaction water outlet is removed the natural pond slag through the rotation grid, and the screw extrusion press that the natural pond slag of water ratio 85%~90% advances in the sludge treating system is handled; The water outlet of rotation grid is removed mud and suspended substance in the water through low-temperature zone air flotation pool I, membrane filtration, makes suspended substance drop to 50mg/L~100mg/L; The mud of low-temperature zone air flotation pool I and membrane filtration is back to the sedimentation basin I through valve control, and excess sludge gets into the belt filter press in the sludge treating system through pipeline; The water outlet of membrane filtration is reacted phosphorus, mg ion and a part of ammonia nitrogen ion of removing in the sewage through struvite, forms the struvite deposition and discharges, and removes easy material in the follow up device fouling simultaneously, and struvite reaction control pH value is between 9~10; The water outlet of struvite reaction tank gets into the anaeration in normal temperature reaction and removes pollutent once more behind the dosing chamber homogeneous, 33~37 ℃ of anaeration in normal temperature temperature controls; The anaeration in normal temperature water outlet is after low-temperature zone air flotation pool II is removed suspended substance, and effluent index COD is controlled at 2500mg/L~3000mg/L; Anaeration in normal temperature gets into the belt filter press in the sludge system through the mud of low-temperature zone air flotation pool II; The water outlet of low-temperature zone air flotation pool II with the sewage of low concentration after removing sand through the sedimentation basin II at equalizing tank II homogeneous after aerobic biochemical, oxidation MBR.Aerobic MBR control sludge concentration 10~15mg/L; Dissolved oxygen is controlled at 4~6 mg/L; Aerobic MBR effluent index COD is controlled at 100mg/L~150mg/L; The mud that aerobic MBR produces is back to the aerobic biochemical front end through valve control as returned sluge and joins the mud well, in residual sludge reflux to the sedimentation basin I, carries out the sludge digestion decrement through the high temperature anaerobic reaction again; Aerobic MBR water outlet is through ozone oxidation and biological activated carbon reaction, and dissolved oxygen is controlled at 1~3 mg/L in the ozone dosage 20~50mg/L, biological activated carbon reactor drum, makes water outlet COD be stabilized in 50mg/L~60mg/L; Reusing sewage after the ozone oxidation is in spice, all the other after the biological activated carbon reaction reusing sewage in cooling system.
Reclaim water and reach about 80%, handle back sewage and meet " urban wastewater treatment firm " GB18918-2002 one-level B effluent standard.
Above-mentioned a kind of potato alcohol wastewater treatment process, its described sludge treating system are meant the natural pond slag of spinning grid through the screw extrusion press preliminary hydro-extraction, and water ratio is controlled between 75~80%; The mud that comes out from high temperature section air flotation pool I, membrane filtration, low-temperature zone air flotation pool II passes through the belt filter press preliminary hydro-extraction; The PAM dosage is controlled at 0.4%; Between the moisture percentage in sewage sludge control 75~80%; Mixes through worm conveyor with dehydration natural pond slag again, deliver to high pressing dehydrator, moisture percentage in sewage sludge is controlled at 55%~60% delivers to incinerator or heap buries a processing from screw extrusion press.
A kind of potato alcohol wastewater treatment system, high-concentration waste water links to each other with the rotation grid through sedimentation basin I, equalizing tank I, high temperature anaerobic reactor drum through pipeline, and the screw extrusion press that its natural pond slag gets in the sludge treating system links to each other; The water outlet of rotation grid is connected with membrane filter through high temperature section air flotation pool I through pipeline; The mud of high temperature section air flotation pool I and membrane filter through valve through pipeline respectively with sedimentation basin I, sludge treating system in belt filter press link to each other; It is characterized in that: the membrane filter water outlet links to each other with the struvite reaction tank through pipeline; The struvite reaction tank links to each other with low-temperature zone air flotation pool II through dosing chamber, anaeration in normal temperature reactor drum; The water outlet of low-temperature zone air flotation pool II links to each other with the aerobic biochemical pond through the equalizing tank II with the sewage of low concentration after removing sand through the sedimentation basin II; The aerobic biochemical pond is connected with aerobic MBR; The mud of aerobic MBR is joined mud well through pipeline with aerobic biochemical pond front end through valve and is connected, and excess sludge is back to the sedimentation basin I through pipeline; Aerobic MBR water outlet links to each other with the ozone oxidation pond through pipeline; The ozone oxidation pond links to each other with the biological activated carbon reactor drum; Sewage after handle in the ozone oxidation pond links to each other with the spice water pipe through pipeline, and water links to each other with cooling system through pipeline after the biological activated carbon reactor for treatment, and residue is discharged through pipe.
Above-mentioned a kind of potato alcohol wastewater treatment system, its described sludge treating system are meant the natural pond slag of spinning grid to link to each other with screw extrusion press through pipeline; Is connected with belt filter press through pipeline from the mud of high temperature section air flotation pool I, membrane filter, low-temperature zone air flotation pool II, the mud that belt filter press comes out passes through pipeline again and is connected with worm conveyor through managing with dehydration natural pond slag from screw extrusion press; Worm conveyor links to each other with high pressing dehydrator, and the mud of high pressing dehydrator buries the field through pipeline and incinerator or heap and links to each other.
The present invention compared with prior art has following marked improvement and positively effect: because on the prior art basis; Supporting membrane filtration, struvite reaction, aerobic MBR, ozone oxidation, the biological activated carbon of having adopted reacts; Can remove the system suspension thing effectively; Improve Biodegradability of Wastewater, except sludge disposal need add a small amount of PAM (SEPIGEL 305), need not add other medicaments.The sewage of discharging meets " urban wastewater treatment firm " GB18918-2002 one-level B standard ,The processed waste water reclamation rate reaches about 80%.
Description of drawings
Fig. 1 is a process flow diagram of the present invention; Among the figure, 1-sedimentation basin I; 2-equalizing tank I; 3-high temperature anaerobic reactor drum; 4-rotation grid; 5-high temperature section air flotation pool I; 6-membrane filter; 7-struvite reaction tank; 8-dosing chamber; 9-anaeration in normal temperature reactor drum; 10-low-temperature zone air flotation pool II; 11-sedimentation basin II; 12-equalizing tank II; 13-aerobic biochemical pond; 14-aerobic MBR; 15-ozone oxidation pond; 16-biological activated carbon reactor drum; 17-screw extrusion press; 18-belt filter press; 19-worm conveyor; 20-high pressing dehydrator; Dotted line (---) expression mud pipeline; Solid line (-) part is represented sewer pipeline.
Embodiment
Embodiment 1: see Fig. 1, a kind of potato alcohol wastewater treatment system, high-concentration waste water links to each other with rotation grid 4 through sedimentation basin I 1, equalizing tank I 2, high temperature anaerobic reactor drum 3 through pipeline, and the screw extrusion press 17 that its natural pond slag gets in the sludge treating system links to each other; Rotation grid 4 water outlets are connected with membrane filter 6 through high temperature section air flotation pool I 5 through pipeline, the mud of high temperature section air flotation pool I 5 and membrane filter through valve through pipeline respectively with sedimentation basin I 1, sludge treating system in belt filter press 18 link to each other; It is characterized in that: membrane filter 6 water outlets link to each other with struvite reaction tank 7 through pipeline; Struvite reaction tank 7 links to each other with low-temperature zone air flotation pool II 10 through dosing chamber 8, anaeration in normal temperature reactor drum 9; The sewage of low concentration of low-temperature zone air flotation pool II 10 water outlets after with remove sand through sedimentation basin II 11 (husky outward transport is handled) links to each other with aerobic biochemical pond 13 through equalizing tank II 12; Aerobic biochemical pond 13 is connected with aerobic MBR14; The mud of aerobic MBR14 is joined mud well (not providing among the figure) through valve through pipeline and aerobic biochemical pond 13 front ends and is connected, and excess sludge is back to sedimentation basin I 1 through pipeline; Aerobic MBR14 water outlet links to each other with biological activated carbon reactor drum 16 through ozone oxidation pond 15 through pipeline; Sewage after handle in ozone oxidation pond 15 links to each other with the spice water pipe through pipeline, and the sewage after biological activated carbon reactor drum 16 is handled links to each other with cooling system through pipeline, and residue is discharged through pipe.
Above-mentioned a kind of potato alcohol wastewater treatment system, its described sludge treating system are meant the natural pond slag of spinning grid 4 to link to each other with screw extrusion press 17 through pipeline; Mud from high temperature section air flotation pool I 5, membrane filter 6, low-temperature zone air flotation pool II 10 is connected with belt filter press 18 through pipeline; The mud that belt filter press 18 comes out again through pipeline be connected with worm conveyor 19 through managing from the dehydration natural pond slag of screw extrusion press 17; Worm conveyor 19 links to each other with high pressing dehydrator 20, and the mud of high pressing dehydrator 20 buries the field through pipeline and incinerator or heap and links to each other.
Embodiment 2: see Fig. 1; A kind of potato alcohol wastewater treatment process, high-concentration sewage gets into the equalizing tank I and carries out homogeneous after desilting is removed most of grains of sand and lacked the part suspended substance; Water outlet gets into the high temperature anaerobic reaction and removes most of pollutent, and the high temperature anaerobic temperature is controlled at 55~57 ℃; High temperature anaerobic reaction water outlet is removed most of natural pond slag through the rotation grid, and the screw extrusion press that the natural pond slag of water ratio 85%~90% advances in the sludge treating system is handled; The water outlet of rotation grid is removed mud and suspended substance in the water through low-temperature zone air flotation pool I, membrane filtration; Make suspended substance drop to 50mg/L~100mg/L; The mud of low-temperature zone air flotation pool I and membrane filtration is controlled a part of mud through valve and is back to the sedimentation basin I, and another part mud gets into the belt filter press in the sludge treating system through pipeline; The water outlet of membrane filtration is reacted most of phosphorus, mg ion and a part of ammonia nitrogen ion of removing in the sewage through struvite, forms the struvite deposition and discharges, and removes easy material in the follow up device fouling simultaneously, and struvite reaction control pH value is between 9~10; The water outlet of struvite reaction tank gets into the anaeration in normal temperature reaction and removes most of pollutent once more behind the dosing chamber homogeneous, 33~37 ℃ of anaeration in normal temperature temperature controls; The anaeration in normal temperature water outlet is after low-temperature zone air flotation pool II is removed suspended substance, and effluent index COD is controlled at 2500mg/L~3000mg/L; Anaeration in normal temperature mud after low-temperature zone air flotation pool II gets into the belt filter press in the sludge system; The sewage of low concentration of low-temperature zone air flotation pool II water outlet after with remove sand through the sedimentation basin II (husky outward transport is handled) at equalizing tank II homogeneous after aerobic biochemical link to each other with oxidation MBR.Aerobic MBR control sludge concentration 10~15mg/L; Dissolved oxygen is controlled at 4~6 mg/L; Aerobic MBR effluent index COD is controlled at 100mg/L~150mg/L; The mud that aerobic MBR produces is back to the aerobic biochemical front end through valve control major part as returned sluge and joins mud well (not providing among the figure), in residual sludge reflux to the sedimentation basin I, carries out the sludge digestion decrement through the high temperature anaerobic reaction again; Aerobic MBR water outlet is through ozone oxidation and biological activated carbon reaction, and dissolved oxygen is controlled at 1~3 mg/L in the ozone dosage 20~50mg/L, biological activated carbon reactor drum, makes water outlet COD be stabilized in 50mg/L~60mg/L; Reusing sewage after the ozone oxidation is in spice, and all the other reusing sewages after the biological activated carbon reaction reclaim water and reach about 80% in cooling system, handle back sewage and meet " urban wastewater treatment firm " GB18918-2002 one-level B effluent standard.
Above-mentioned a kind of potato alcohol wastewater treatment process, its described sludge treating system are meant the natural pond slag of spinning grid through the screw extrusion press preliminary hydro-extraction, and water ratio is controlled between 75~80%; The mud that comes out from high temperature section air flotation pool I, membrane filtration, low-temperature zone air flotation pool II passes through the belt filter press preliminary hydro-extraction; The PAM dosage is controlled at 0.4%; Between the moisture percentage in sewage sludge control 75~80%; Mixes through worm conveyor with dehydration natural pond slag again, deliver to high pressing dehydrator, moisture percentage in sewage sludge is controlled at 55%~60% delivers to incinerator or heap buries a processing from screw extrusion press.

Claims (2)

1. potato alcohol wastewater treatment process, high-concentration sewage get into the equalizing tank I and carry out homogeneous after desilting is removed suspended substance, and water outlet gets into the high temperature anaerobic reaction and removes pollutent, and the high temperature anaerobic temperature is controlled at 55~57 ℃; High temperature anaerobic reaction water outlet is removed the natural pond slag through the rotation grid, and the screw extrusion press that the natural pond slag of water ratio 85%~90% advances in the sludge treating system is handled; The water outlet of rotation grid is removed mud and suspended substance in the water through high temperature section air flotation pool I, membrane filtration, makes suspended substance drop to 50mg/L~100mg/L; The mud of high temperature section air flotation pool I and membrane filtration is back to the sedimentation basin I through valve control, and excess sludge gets into the belt filter press in the sludge treating system through pipeline; The water outlet of membrane filtration is reacted phosphorus, mg ion and a part of ammonia nitrogen ion of removing in the sewage through struvite, forms the struvite deposition and discharges, and removes easy material in the follow up device fouling simultaneously, and struvite reaction control pH value is between 9~10; The water outlet of struvite reaction tank gets into the anaeration in normal temperature reaction and removes pollutent once more behind the dosing chamber homogeneous, 33~37 ℃ of anaeration in normal temperature temperature controls; The anaeration in normal temperature water outlet is after low-temperature zone air flotation pool II is removed suspended substance, and effluent index COD is controlled at 2500mg/L~3000mg/L; Anaeration in normal temperature gets into the belt filter press in the sludge system through the mud of low-temperature zone air flotation pool II; The water outlet of low-temperature zone air flotation pool II with the sewage of low concentration after removing sand through the sedimentation basin II at equalizing tank II homogeneous after aerobic biochemical, aerobic MBR; Aerobic MBR control sludge concentration 10~15mg/L; Dissolved oxygen is controlled at 4~6 mg/L; Aerobic MBR effluent index COD is controlled at 100mg/L~150mg/L; The mud that aerobic MBR produces is back to the aerobic biochemical front end through valve control as returned sluge and joins the mud well, in residual sludge reflux to the sedimentation basin I, carries out the sludge digestion decrement through the high temperature anaerobic reaction again; Aerobic MBR water outlet is through ozone oxidation and biological activated carbon reaction, and dissolved oxygen is controlled at 1~3 mg/L in the ozone dosage 20~50mg/L, biological activated carbon reactor drum, makes water outlet COD be stabilized in 50mg/L~60mg/L; Reusing sewage after the ozone oxidation is in spice, all the other after the biological activated carbon reaction reusing sewage in cooling system.
2. a kind of potato alcohol wastewater treatment process according to claim 1, its described sludge treating system are meant the natural pond slag of spinning grid through the screw extrusion press preliminary hydro-extraction, and water ratio is controlled between 75~80%; The mud that comes out from high temperature section air flotation pool I, membrane filtration, low-temperature zone air flotation pool II passes through the belt filter press preliminary hydro-extraction; The PAM dosage is controlled at 0.4%; Between the moisture percentage in sewage sludge control 75~80%; Mixes through worm conveyor with dehydration natural pond slag again, deliver to high pressing dehydrator, moisture percentage in sewage sludge is controlled at 55%~60% delivers to incinerator or heap buries a processing from screw extrusion press.
3. potato alcohol wastewater treatment system, high-concentration waste water links to each other through sedimentation basin I, equalizing tank I, high temperature anaerobic reactor drum and rotation grid through pipeline, and its natural pond slag links to each other with screw extrusion press in the sludge treating system through pipeline; Rotation grid water outlet is connected with membrane filter through high temperature section air flotation pool I through pipeline, the mud of high temperature section air flotation pool I and membrane filter through valve through pipeline respectively with sedimentation basin I, sludge treating system in belt filter press link to each other; It is characterized in that: the membrane filter water outlet links to each other with the struvite reaction tank through pipeline; The struvite reaction tank links to each other with low-temperature zone air flotation pool II through dosing chamber, anaeration in normal temperature reactor drum; The water outlet of low-temperature zone air flotation pool II links to each other with the aerobic biochemical pond through the equalizing tank II with the sewage of low concentration after removing sand through the sedimentation basin II; The aerobic biochemical pond is connected with aerobic MBR; The mud of aerobic MBR is joined mud well through pipeline with aerobic biochemical pond front end through valve and is connected, and excess sludge is back to the sedimentation basin I through pipeline; Aerobic MBR water outlet links to each other with the biological activated carbon reactor drum through the ozone oxidation pond through pipeline; Sewage after handle in the ozone oxidation pond links to each other with the spice water pipe through pipeline; Water links to each other with cooling system through pipeline after the biological activated carbon reactor for treatment, and residue is discharged through pipe.
4. a kind of potato alcohol wastewater treatment system according to claim 3, its characteristic: described sludge treating system is meant the natural pond slag of spinning grid to link to each other with screw extrusion press through pipeline; Mud from high temperature section air flotation pool I, membrane filter, low-temperature zone air flotation pool II is connected with belt filter press through pipeline; The mud that belt filter press comes out again through pipeline be connected with worm conveyor through managing from the dehydration natural pond slag of screw extrusion press; Worm conveyor links to each other with high pressing dehydrator, and the mud of high pressing dehydrator buries the field through pipeline and incinerator or heap and links to each other.
CN2011102722051A 2011-09-15 2011-09-15 Potato type ethanol wastewater treatment method and system Expired - Fee Related CN102351386B (en)

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CN104591440A (en) * 2015-01-20 2015-05-06 广西中粮生物质能源有限公司 Method for treating wastewater generated after preparing alcohol from cassavas as raw material
CN104591498B (en) * 2015-01-23 2016-08-24 湖南联合餐厨垃圾处理有限公司 Kitchen sewage treatment process
CN105016516A (en) * 2015-06-24 2015-11-04 南京元凯生物能源环保工程有限公司 Biogas slurry pretreatment device
CN105565598B (en) * 2015-12-22 2017-12-29 中国海诚工程科技股份有限公司 A kind of integrated treatment and the Application way of cassava grain stillage waste water and industrial sludge
CN105800831B (en) * 2016-05-09 2020-01-14 东华大学 High-ammonia-nitrogen high-organic-matter wastewater recycling method and device
CN106746184A (en) * 2016-12-02 2017-05-31 江苏蓝必盛化工环保股份有限公司 A kind of method for processing epoxychloropropane waste water
CN107417051A (en) * 2017-09-14 2017-12-01 广州沼能环保科技有限责任公司 A kind of high temeperature chemistry anaerobic system
CN113786718A (en) * 2021-09-28 2021-12-14 吉林海普科技发展有限公司 Water paint spraying VOC biodegradation purification system

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CN101823816A (en) * 2010-05-05 2010-09-08 天津大学 Aerobic sludge zero discharge technology in potato alcohol wastewater treatment process

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