CN202346862U - Potato alcohol wastewater treatment system - Google Patents

Abstract

The utility model relates to a potato alcohol wastewater treatment system, which is characterized in that a settling tank I is sequentially connected with a regulating tank I, a high-temperature anaerobic reactor and a rotating grate through a sewage pipeline; the rotating grate is sequentially connected with a high-temperature section air floatation tank I and a membrane filter through a sewage pipeline, and the high-temperature section air floatation tank I and the membrane filter are connected with a belt filter press in a sludge treatment system through a valve and a sludge pipeline; the membrane filter is connected with a struvite reaction tank through a sewage pipeline; the struvite reaction tank is sequentially connected with a batching tank, a medium-temperature anaerobic reactor and a low-temperature section air floatation tank II through a sewage pipeline; the low-temperature section air floatation tank II is sequentially connected with a regulating tank II and an aerobic biochemical tank; the aerobic biochemical tank is connected with an aerobic membrane-coupled bioreactor (MBR); the aerobic MBR is connected with the settling tank I through a valve and a sludge pipe and is connected with the regulating tank II through a sewage pipe; the aerobic MBR is sequentially connected with an ozone oxidation tank and a biological activated carbon reactor through a sewage pipe; the ozone oxidation tank is connected with a material mixing water pipe; and the biological activated carbon reactor is connected with a cooling system.

Description

A kind of potato alcohol wastewater treatment system

Technical field

The present invention is applicable to the potato alcohol wastewater treatment system.

Background technology

Potato alcohol wastewater is handled at present, adopts remove sand groove, high temperature anaerobic reactor drum, mesh gauze filter, air supporting (deposition) pond, anaeration in normal temperature reactor drum, air supporting (deposition) pond, aerobic biochemical reactor drum, advanced treatment system usually.This system can not cope well to suspended substance, cause 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; Provide a kind of potato alcohol wastewater to handle, do not need outer adding medicine outside a small amount of PAM (SEPIGEL 305, as follows) except adding at sludge disposal; The struvite scale problems of having used the struvite device solves; Use ozone oxidation to improve wastewater biodegradability, the most of reuse of processed waste water, it is below the mark that water outlet can reach " urban wastewater treatment firm " GB18918-2002 one-level B.

Technical scheme of the present invention is: a kind of potato alcohol wastewater treatment system, and the sedimentation basin I links to each other with the rotation grid with equalizing tank I, high temperature anaerobic reactor drum through sewer pipeline successively; The rotation grid is connected with high temperature section air flotation pool I, membrane filter through the mud pipeline successively, and high temperature section air flotation pool I and membrane filter link to each other through valve belt filter press in mud pipeline and sludge treating system; It is characterized in that: membrane filter links to each other with the struvite reaction tank through sewer pipeline; The struvite reaction tank links to each other with dosing chamber, anaeration in normal temperature reactor drum, low-temperature zone air flotation pool II through sewer pipeline successively; Low-temperature zone air flotation pool II links to each other with equalizing tank II, aerobic biochemical pond through sewer pipeline successively; The aerobic biochemical pond is connected with aerobic MBR; Aerobic MBR links to each other with the sedimentation basin I through the mud pipeline through valve, links to each other with the equalizing tank II through sewer pipeline; Aerobic MBR links to each other with ozone oxidation pond, biological activated carbon reactor drum through sewer pipeline successively; The ozone oxidation pond links to each other with the spice water pipe through sewer pipeline; The biological activated carbon reactor drum links to each other with cooling system through sewer pipeline.

Above-mentioned a kind of potato alcohol wastewater treatment system, its characteristic: described sludge treating system is: the rotation grid links to each other with screw extrusion press through the mud pipeline; High temperature section air flotation pool I, membrane filter, low-temperature zone air flotation pool II are connected with belt filter press through the mud pipeline respectively; Belt filter press is connected with worm conveyor, and screw extrusion press is connected with worm conveyor through the mud pipeline; Worm conveyor links to each other with high pressing dehydrator, and high pressing dehydrator buries the field through mud 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 filter, struvite reaction tank, aerobic MBR, ozone oxidation pond, the biological activated carbon reactor drum of having adopted; Can remove the system suspension thing effectively; Improve Biodegradability of Wastewater, except sludge disposal need add small amounts of medicament (PAM), 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: as see Fig. 1; A kind of potato alcohol wastewater treatment system; High-concentration waste water links to each other through sedimentation basin I 1, equalizing tank I 1, high temperature anaerobic reactor drum 3 and rotation grid 4 through pipeline successively, and its natural pond slag gets into and rotates grid 4 and link to each other with screw extrusion press 17 in the sludge treating system; Rotation grid 4 water outlets are connected with membrane filter 6 through high temperature section air flotation pool I 5 through sewer pipeline, the mud of high temperature section air flotation pool I 1 and membrane filter 6 through valve through the mud pipeline respectively with sedimentation basin I 1, sludge treating system in belt filter press 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 1 through dosing chamber 8, anaeration in normal temperature reactor drum 9; 10 water outlets of low-temperature zone air flotation pool II link to each other with aerobic biochemical pond 13 through equalizing tank II 12 with the sewage of low concentration after removing sand through sedimentation basin II 11; Aerobic biochemical pond 13 is connected with aerobic MBR14; 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 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; 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 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.

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, and 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.Described sludge treating system is 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 system, the sedimentation basin I links to each other with equalizing tank I, high temperature anaerobic reactor drum and rotation grid through sewer pipeline successively; The rotation grid is connected with high temperature section air flotation pool I, membrane filter through the mud pipeline successively, and high temperature section air flotation pool I and membrane filter link to each other through valve belt filter press in mud pipeline and sludge treating system; It is characterized in that: membrane filter links to each other with the struvite reaction tank through sewer pipeline; The struvite reaction tank links to each other with dosing chamber, anaeration in normal temperature reactor drum, low-temperature zone air flotation pool II through sewer pipeline successively; Low-temperature zone air flotation pool II links to each other with equalizing tank II, aerobic biochemical pond through sewer pipeline successively; The aerobic biochemical pond is connected with aerobic MBR; Aerobic MBR links to each other with the sedimentation basin I through the mud pipeline through valve, links to each other with the equalizing tank II through sewer pipeline; Aerobic MBR links to each other with ozone oxidation pond, biological activated carbon reactor drum through sewer pipeline successively; The ozone oxidation pond links to each other with the spice water pipe through sewer pipeline; The biological activated carbon reactor drum links to each other with cooling system through sewer pipeline.

2. a kind of potato alcohol wastewater treatment system according to claim 1, it is characterized in that: described sludge treating system is: the rotation grid links to each other with screw extrusion press through the mud pipeline; High temperature section air flotation pool I, membrane filter, low-temperature zone air flotation pool II are connected with belt filter press through the mud pipeline respectively; Belt filter press is connected with worm conveyor, and screw extrusion press is connected with worm conveyor through the mud pipeline; Worm conveyor links to each other with high pressing dehydrator, and high pressing dehydrator buries the field through mud pipeline and incinerator or heap and links to each other.