CN206437994U - A kind of kitchen garbage, waste-water processing unit - Google Patents

A kind of kitchen garbage, waste-water processing unit Download PDF

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CN206437994U
CN206437994U CN201621242220.6U CN201621242220U CN206437994U CN 206437994 U CN206437994 U CN 206437994U CN 201621242220 U CN201621242220 U CN 201621242220U CN 206437994 U CN206437994 U CN 206437994U
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waste water
water
waste
ammonia
regulating
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蒋剑虹
唐清畅
罗友元
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China Machinery International Engineering Design and Research Institute Co Ltd
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China Machinery International Engineering Design and Research Institute Co Ltd
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Abstract

A kind of kitchen garbage, waste-water processing unit.Handled after waste water elder generation through oil removal preliminary sedimentation tank (1), regulating reservoir (2), the first pH regulating reservoirs (3), Ammonia blowing-out tower (4), the 2nd pH regulating reservoirs (5), A/O biochemical treatment apparatus (6), sedimentation basin (7), ozone reactor (8), BAF (9), sterilization pool (10), COD, BOD in waste water is removed5, the pollutant such as SS while, can effectively remove TN, TP and effectively reduce chroma in waste water, and improve TN, TP clearance, COD, BOD in the waste water after processing5、TN、NH3The pollutants such as N, TP, colourity can be stably reached《Integrated wastewater discharge standard》(GB8978 1996) " grade III Standard " and《Sewage is discharged into town sewer water standard》The requirement of (GB/T 31,962 2015) " B grades ".

Description

A kind of kitchen garbage, waste-water processing unit
Technical field
The utility model is related to a kind of kitchen garbage, waste-water processing unit, and in particular to a kind of kitchen garbage slurry anaerobism hair Waste water after ferment dehydration, and kitchen garbage handle the wastewater produced processing unit of other processes, belong to sewage treatment area.
Background technology
Waste water after the dehydration of kitchen garbage slurry anaerobic fermentation, and kitchen garbage handle the waste water that other processes are produced, Waste component is complicated, the big high concentrated organic wastewater of category intractability.Pollutants in Wastewater concentration is high, COD (COD, 8000~20000mg/L), biochemical oxygen demand (BOD) (BOD5, 4000~8000mg/L, total nitrogen (TN, 2000~3000mg/L), ammonia nitrogen (NH3- N, 1500~2500mg/L), total phosphorus (TP, 50~150mg/L), suspension (SS,>8000mg/L), salt content (15000 ~30000mg/L), vegetable and animals oils (800~1500mg/L), colourity (300~800 times).Cellulose, protein in waste water, The refractory organic such as lipid matter institute accounting is big, its carbon-nitrogen ratio (BOD5:TKN it is) low, only 2:1~3:1, the carbon nitrogen of waste water Than the low effective removal for being unfavorable for total nitrogen.
Kitchen waste water processing it is main at present using anaerobic bio-treated, Aerobic biological process and membrane technology processing etc. it is several or The processing unit of a variety of unit combinations.Waste water should reach after processing《Integrated wastewater discharge standard (GB8978-1996)》In " three Level standard " is and more strict《Sewage is discharged into town sewer water standard》" B grades " standard in (GB/T 31962-2015).
Have a kind of by " pretreatment unit+anaerobic processing device+aerobic treatment device+flocculation is sunk in existing processing unit The processing unit that shallow lake pond " is combined, its deficiency is:One is that Anaerobic Treatment unit operational management requirement is high, especially at anaerobism Reason device consumes the carbon source in waste water in the process of running, carbon-nitrogen ratio in waste water is further declined (COD, BOD5Reduction, ammonia nitrogen Rise), the reduction of carbon-nitrogen ratio is less useful for the biological denitrificaion of waste water;Second, the ammonia nitrogen in waste water mainly occurs in aerobic stage Nitration reaction and be converted into nitrate nitrogen and nitrite nitrogen, due to carbon-nitrogen ratio (BOD5:TKN) relatively low state is being in originally It is lower to be reduced again, cause carbon source to lack, because without sufficient carbon source, it is impossible to complete denitrification denitrogenation, then total nitrogen fails effective degraded With removal, nitrogen removal rate is low, it is difficult to reach《Sewage is discharged into town sewer water standard》" B in (GB/T 31962-2015) The requirement of level " standard.
There is one kind in the prior art by " pretreatment unit+anaerobic processing device+aerobic treatment device+reverse osmosis membrane mistake The processing unit that filter device etc. " is combined, its deficiency is, one be Anaerobic Treatment unit with the anaerobism in above-mentioned processing unit The problem of reason unit has same;Two be advanced treating of the reverse osmosis membrane filtration device as end, although can be met《Sewage It is discharged into town sewer water standard》The requirement of " B grades " standard, its defect is that grease in waste water is easily caused reverse osmosis membrane and blocked up High salt branch in plug, waste water accelerates the aging of reverse osmosis membrane, and reverse osmosis membrane service life is short, and especially reverse osmosis membrane filtration is filled It is a kind of physical filtering device to put, and simply retains the pollutant in waste water, pollutant is not degraded really, produced Raw a large amount of concentrates need to separately carry out the processing of complex process, be easily caused secondary pollution, and operating cost is higher.
The content of the invention
In view of the shortcomings of the prior art, the utility model provides a kind of kitchen garbage, waste-water processing unit, i.e. kitchen garbage Waste water and the wastewater produced processing unit of other processes of kitchen garbage processing procedure after the dehydration of slurry anaerobic fermentation, the present apparatus While the pollutant such as COD, BOD, SS in meeting effectively removal waste water, TN, NH can be effectively removed3- N, TP and effectively reduction Chroma in waste water, and improve TN, NH3COD, BOD in-N, TP clearance, the waste water after processing5、TN、NH3The dirts such as-N, TP, colourity Dye thing can be stably reached《Integrated wastewater discharge standard》(GB8978-1996) " grade III Standard " and《Sewage is discharged into cities and towns Xia Shui Road water standard》The requirement of (GB/T 31962-2015) " B grades ".
The technical solution of the utility model is as follows:
Referring to accompanying drawing, including oil removal preliminary sedimentation tank 1, regulating reservoir 2, the first pH regulating reservoirs 3, Ammonia blowing-out tower 4, the 2nd pH regulating reservoirs 5th, A/O biochemical treatment apparatus 6, sedimentation basin 7, ozone reactor 8, BAF 9, sterilization pool 10;
Oil slick baffle plate 1a is arranged at the top of oil removal preliminary sedimentation tank 1, and sludge bucket 1b is arranged at bottom, and sludge bucket has sludge outlet 1c, every The wastewater outlet of oily preliminary sedimentation tank 1 is communicated with the regulating reservoir 2, and oil removal preliminary sedimentation tank carries out oil removal, just heavy processing to waste water, removes big Partial suspended thing SS;
The regulating reservoir 2 is communicated with the first pH regulating reservoirs 3, and waste water water, water quality are adjusted regulating reservoir 2;
There is the first rabbling mechanism 3a in the first pH regulating reservoirs 3, the first pH regulating reservoirs (3) inner chamber is simultaneously thrown with alkali (NaOH) Plus component is communicated, the first pH regulating reservoirs 3 carry out first time regulation to the pH value of waste water, make the form of ammonia nitrogen in waste water by NH4 +Turn Turn to free ammonia (NH3), provide advantage effectively to remove ammonia nitrogen in follow-up Ammonia blowing-out tower processing procedure;
Offgas outlet 4a is arranged at the top of Ammonia blowing-out tower 4, and air intlet 4b is arranged at bottom, and the inner chamber top of Ammonia blowing-out tower 4, which has, matches somebody with somebody Water component 4c, water distribution component 4c waste water inlet is communicated with the first pH regulating reservoirs 3, the wastewater outlet of Ammonia blowing-out tower 4 and Two pH regulating reservoirs 5 are communicated, and waste water is handled through Ammonia blowing-out tower, are realized stripping and the removal of free ammonia, are made the carbon-nitrogen ratio in waste water (BOD5:TKN) improve, suitable carbon-nitrogen ratio condition is provided for the biological denitrificaion of follow-up A/O biochemical treatment apparatus;
Have the second rabbling mechanism 5a in the 2nd pH regulating reservoirs 5, the 2nd pH regulating reservoirs (5) inner chamber and with sulfuric acid (H2SO4) Add component to communicate, the 2nd pH regulating reservoirs 5 are communicated with the anoxic zone 6a in the A/O biochemical treatment apparatus 6, the 2nd pH regulating reservoirs PH value to waste water carries out second of regulation, forms the suitable growing environment of microorganism, is the life of follow-up A/O biochemical treatment apparatus Change processing and necessary environment is provided;
Aerobic zone 6b in the A/O biochemical treatment apparatus 6 is communicated with the sedimentation basin 7,6 pairs of A/O biochemical treatment apparatus Waste water carries out biochemical treatment, effectively removes most COD, BOD5, further remove NH3- N, TN, effectively remove TP;
Storage mud chamber 7a is arranged at the bottom of sedimentation basin 7, and storage mud chamber has sludge outlet, and the top of sedimentation basin 7 and the ozone are anti- The waste water inlet of device 8 is answered to communicate, waste water further removes SS and TP through the precipitation process of sedimentation basin 7;
There are ozone valve actuating mechanism 8a, the wastewater outlet of ozone reactor 8 and the aeration and biological in the ozone reactor 8 The bottom in filter tank 9 is communicated, and waste water carries out haptoreaction in the ozone reactor 8 with ozone, further in reduction waste water COD、BOD5, the coloured groups in waste water are destroyed, and the colourity of waste water is effectively reduced;
The inner chamber bottom of BAF 9 is provided with aeration component 9a, and there are biological filter bed of material 9b, aeration and biological filter in middle part The top of pond 9 is communicated with the sterilization pool 10, and BAF 9 carries out biological treatment to waste water, further eliminates in waste water COD, BOD5、TN、NH3- N, while realizing the removal to remaining SS;
The sterilization pool 10 carries out disinfection processing, sterile-processed rear discharged wastewater met the national standard to waste water.
Compared with the prior art, the utility model has the characteristics that and technique effect:
1st, a kind of new processing unit is combined as using " the first pH regulating reservoirs+Ammonia blowing-out tower " in the utility model, First time regulation is carried out to the pH value of waste water in one pH regulating reservoirs, makes the form of ammonia nitrogen in waste water from NH4 +It is converted into free ammonia (NH3), the free ammonia effectively removed in waste water for follow-up Ammonia blowing-out tower processing procedure provides favourable technical conditions, is blown in ammonia Passing through liquid in de- tower processing --- gas mass transport process, inverted free ammonia then switchs to gas phase by liquid phase and turns into ammonia-containing exhaust simultaneously Discharge, so as to realize effective removal of the Ammonia blowing-out tower to part free ammonia in waste water, TN, NH are effectively removed to realize3- N and carry High TN, NH3The purpose of-N clearances establishes good basis.
2nd, described " the pH regulating reservoir+A/O biochemical treatment apparatus of Ammonia blowing-out tower+the two " is constituted another in the utility model The processing unit of innovation, because the processing of the Ammonia blowing-out tower is effectively removed the free ammonia in waste water, is effectively improved useless Carbon-nitrogen ratio in water, so as to be provided for the biological denitrificaion of follow-up A/O biochemical treatment apparatus at suitable carbon-nitrogen ratio condition, ammonia aeration Waste water after reason enters in the 2nd pH regulating reservoirs carries out second of regulation to the pH value of waste water, and the life of microorganism suitably is formd again Long environment;
It is right because the processing of Ammonia blowing-out tower for the biological denitrificaion of A/O biochemical treatment apparatus provides suitable carbon-nitrogen ratio condition The pH value of waste water carries out second of regulation and forms the suitable growing environment of microorganism again, in A/O biochemical treatment apparatus to waste water During carrying out biochemical treatment, the microorganism in the aerobic zone of A/O biochemical treatment apparatus in activated sludge can effectively be carried out Metabolism, by COD, BOD in waste water5Degraded, while the ammonium oxidation in waste water is nitric acid by the nitrifier in activated sludge Salt nitrogen and cultured water, the carbon source effectively increased due to ammonia aeration processing procedure in the carbon-nitrogen ratio in waste water, waste water are enriched, A/ Denitrifying bacterium in O biochemical treatment apparatus anoxic zone consumes carbon source COD, BOD in waste water is removed5While, by nitrate nitrogen Nitrogen is converted into cultured water, by nitrification-denitrification reaction, effective denitrogenation is realized;Meanwhile, micro- life in activated sludge Thing (polyP bacteria) absorbs phosphorus in metabolic processes, forms Quadrafos and is stored in described microorganism (polyP bacteria) in vivo, Effectively remove the phosphorus in waste water.
3rd, the group of sedimentation basin follow-up in the utility model, ozone reactor, BAF and aforementioned processing unit Conjunction constitutes overall new departure that the utility model is handled waste water, and corresponding effective processing is obtained in aforementioned processing unit On the basis of effect, in the sedimentation basin processing of sedimentation basin, the SS and TP in waste water are further eliminated;In ozone reactor In ozone reaction, COD, BOD in waste water reduce further5With the colourity of effective reduction waste water;In BAF In biological treatment, COD, BOD are further removed5、TN、NH3- N, while removing the SS remained in waste water.Make through at the utility model COD, BOD in waste water after reason5、TN、NH3The pollutants such as-N, TP, colourity can be stably reached《Integrated wastewater discharge standard》 (GB8978-1996) " grade III Standard " and《Sewage is discharged into town sewer water standard》(GB/T 31962-2015) " B grades " It is required that, so as to avoid using the defect present in reverse osmosis membrane processing technique.
4th, the front-end processing unit of " oil partiting precipitation pool+regulating reservoir " is employed in the utility model, i.e., processed is given up Water first carries out oil removal precipitation process by oil partiting precipitation pool to waste water, then waste water is adjusted processing by regulating reservoir, with routine First by regulating reservoir be adjusted processing, rear progress oil removal precipitation process mode ratio, grease can be avoided in regulating reservoir water area Poly- and large granular impurity and suspension sink to regulating reservoir bottom of pond under gravity, it is to avoid the frequent cleaning of regulating reservoir, favorably In raising operating efficiency.
The utility model is further illustrated with reference to embodiment.
Brief description of the drawings
Accompanying drawing is structural representation of the present utility model.
Embodiment
Referring to accompanying drawing, using treatment scale as 100m3Exemplified by/d kitchen garbage, waste-water, embodiment is as follows:
Waste water and kitchen garbage after the dehydration of kitchen garbage slurry anaerobic fermentation handle the waste water quality that other processes are produced: COD:12000~15000mg/L, BOD5:4500~5000mg/L, TN:2100~2400mg/L, NH3-N:1800~2000mg/ L, TP:110~130mg/L, SS:7000~10000mg/L, vegetable and animals oils:800~1000mg/L, pH:7.5~8, colourity: 800~1000 times.
The utility model includes oil removal preliminary sedimentation tank 1, regulating reservoir 2, the first pH regulating reservoirs 3, Ammonia blowing-out tower 4, the 2nd pH regulations Pond 5, A/O biochemical treatment apparatus 6, sedimentation basin 7, ozone reactor 8, BAF 9, sterilization pool 10.
Oil slick baffle plate 1a is arranged at the top of oil removal preliminary sedimentation tank 1, and sludge bucket 1b is arranged at bottom, and sludge bucket has sludge outlet 1c, gives up Water enters oil removal preliminary sedimentation tank by waste pipe, and oil removal preliminary sedimentation tank carries out oil removal, just heavy processing to waste water, removes most suspended substances SS, the wastewater outlet of oil removal preliminary sedimentation tank 1 is communicated with regulating reservoir 2;In operation, the oil slick baffle plate is excluded to be floated on waste water in freedom The oil slick of layer, the oil slick of retention is periodically removed using corresponding device, and the large granular impurity and bulky grain suspension in waste water exist It is deposited in the sludge bucket of oil removal preliminary sedimentation tank bottom in the presence of gravity, the sludge outlet 1c of the sludge of precipitation on sludge bucket 1b Discharge, realizes most suspended substances SS removal;In specific implementation, the sludge discharged by sludge bucket 1b enters the storage set in addition In mud sump 11;The wastewater outlet of the oil removal preliminary sedimentation tank 1 is connected with regulating reservoir 2 by pipe fitting or pocket member.
Water, the water quality of waste water are adjusted the regulating reservoir 2, in favor of the stable operation of subsequent treatment process, adjust Section pond 2 is communicated with the first pH regulating reservoirs 3;
The oil removal preliminary sedimentation tank and regulating reservoir can use armored concrete pond body or carbon steel anticorrosion equipment pond body, this example Oil removal preliminary sedimentation tank size:5m × 2m × 3m (depth), regulating reservoir dischargeable capacity 100m3.After oil removal preliminary sedimentation tank and regulating reservoir processing, SS < 2000mg/L, vegetable and animals oils the < 300mg/L of waste water.
Have the first rabbling mechanism 3a in the first pH regulating reservoirs 3, the inner chamber of the first pH regulating reservoirs 3 and with alkali (NaOH) solution Add component to communicate, the first pH regulating reservoirs 3 carry out first time regulation to the pH value of waste water, the pH value of waste water is adjusted to 10.5~ 12, under the pH value, make the form of ammonia nitrogen in waste water by NH4 +It is converted into free ammonia (NH3), it is follow-up Ammonia blowing-out tower processing procedure In effectively remove ammonia nitrogen provide advantage;In operation, NaOH is added into pond and mixing is stirred, realized to pH value of waste water First time regulation;It is 1.5m × 1.5m × 1.5m (depth), configuration pH value detector and control that first pH of this example, which adjusts 3 pool sizes, Instrument processed automatically controls the dosage of aqueous slkali.
Offgas outlet 4a is arranged at the top of Ammonia blowing-out tower 4, and air intlet 4b is arranged at bottom, and the inner chamber top of Ammonia blowing-out tower 4, which has, matches somebody with somebody Water component 4c, water distribution component 4c waste water inlet is communicated with the first pH regulating reservoirs 3, and waste water is handled through Ammonia blowing-out tower, is realized free The stripping of ammonia and removal, make the carbon-nitrogen ratio (BOD in waste water5:TKN) improve to 4:1~6:1, it is follow-up A/O biochemical treatment apparatus Biological denitrificaion suitable carbon-nitrogen ratio condition is provided, the wastewater outlet of Ammonia blowing-out tower 4 is communicated with the 2nd pH regulating reservoirs 5;The ammonia Packing layer 4f is provided with the middle part of the inner chamber of stripping tower 4, waste water is showered on filler by top through water distribution component 4c water distributions and forms drops State falls along filler.In operation, the waste water after being handled through the first pH regulating reservoirs enters the water distribution component 4c of Ammonia blowing-out tower internal upper part, Through water distribution component water distribution, waste water lands from top to bottom into water droplet state, and air is entered by the air intlet 4b of Ammonia blowing-out tower bottom, Gas liquid ratio is 2500~3500:1, and bottom up by Ammonia blowing-out tower inner chamber blows, the air-flow of rising and even drop down it is useless Water is fully contacted, and passes through liquid --- gas mass transport process, free ammonia then by liquid phase switch to gas phase and as ammonia-containing exhaust and by tail gas 4a discharges are exported, because partially or mostly free ammonia is by stripping and removal, so that carbon-nitrogen ratio (BOD in waste water5:TKN) carry Up to 4:1~6:1, so that suitable carbon-nitrogen ratio condition is provided for follow-up biological denitrificaion, so that follow-up A/O biochemical treatments are filled In the Nitrogen removal effect put, this example:Gas liquid ratio is 3000:1, carbon-nitrogen ratio is improved to 5 in waste water:1~6:1, ammonia nitrogen removal frank Up to more than 60%, the ammonia nitrogen < 800mg/L in the waste water after being handled through ammonia aeration;The first pH regulating reservoirs 3 and the water distribution Waste water inlet on component 4c sets delivery pump 4e by conveying pipe fitting 4d connections, conveying pipe fitting 4d;The Ammonia blowing-out tower 4 it is useless Water out is connected with the 2nd pH regulating reservoirs 5 by pipe fitting or other components.In specific implementation, contain ammonia by what offgas outlet 4a was discharged Respective handling device can be used in tail gas --- and tail gas absorber is handled, using dilute sulfuric acid as ammonia absorbing liquid, tail containing ammonia Gas, which contact and produces to chemically react with entering the absorbing liquid in tail gas absorber, generates ammonium sulfate, the ammonia in ammonia-containing gas from Gas is transferred in absorbing liquid, and the tail gas qualified discharge after absorption, absorbing liquid (ammonium sulfate) can be used as agricultural fertilizer or other Purposes.
Have the second rabbling mechanism 5a in the 2nd pH regulating reservoirs 5, the inner chamber of the 2nd pH regulating reservoirs 5 and with sulfuric acid (H2SO4) molten Liquid adds component and communicated, and the 2nd pH regulating reservoirs carry out second to the pH value of waste water and adjusted, the pH value of waste water is adjusted to 7.0~ 8.5, the suitable growing environment of microorganism is formed, necessary environment, second are provided for the biochemical treatment of follow-up A/O biochemical treatment apparatus PH regulating reservoirs 5 are communicated with the anoxic zone 6a in A/O biochemical treatment apparatus 6;In operation, sulfuric acid solution is added into pond and is stirred Mixing is mixed, realizes that carrying out second to the pH value of waste water is adjusted, configuration pH value Detection & Controling instrument automatically controls sulfuric acid solution Dosage;In this example, the 2nd pH regulation pool sizes:1.5m × 1.5m × 1.5m (depth).The wastewater outlet of the Ammonia blowing-out tower 4 leads to Cross pipe fitting or other components are connected with the waste water inlet of the 2nd pH regulating reservoirs.The 2nd pH regulating reservoirs 5 are by pump 5b and accordingly Pipe fitting is communicated with the anoxic zone 6a in A/O biochemical treatment apparatus 6.
The A/O biochemical treatment apparatus 6 carries out biochemical treatment to waste water, effectively removes most COD, BOD5, further Ammonia nitrogen, TN are removed, aerobic zone 6b and the sedimentation basin 7 in the phosphorus in waste water, the A/O biochemical treatment apparatus 6 is effectively removed Communicate;In operation, micro- life in the aerobic zone 6b of A/O biochemical treatment apparatus 6 (dissolved oxygen is 1.5~2.5mg/L) interior activated sludge Thing can effectively carry out metabolic (activated sludge concentration MLSS, 3.5~4.5g/L), by COD, BOD in waste water5Degraded, has Effect removes most COD, BOD5, while the ammonium oxidation in waste water is nitrate nitrogen and Asia by the nitrobacteria in activated sludge Nitrate nitrogen, due to the carbon-nitrogen ratio (BOD in waste water5:TKN) effectively improved in ammonia aeration processing procedure, the carbon in waste water Source is enriched, and the denitrifying bacterium consumption carbon source in the anoxic zone 6a of A/O biochemical treatment apparatus 6 (dissolved oxygen is 0.2~0.5mg/L) is being gone Except COD, BOD in waste water5While, nitrate nitrogen and cultured water are converted into nitrogen, ammonia nitrogen, TN is further removed, passes through Nitrification-denitrification reaction, realizes effective denitrogenation, meanwhile, the polyP bacteria (microorganism) in activated sludge is in metabolic processes Phosphorus is absorbed, Quadrafos is formed and is stored in the internal of polyP bacteria (microorganism), the phosphorus (biological phosphate-eliminating) in waste water is effectively removed;Institute The muddy water mixed solution stated in the aerobic zone 6b of A/O biochemical treatment apparatus 6 is flowed back in the anoxic zone 6a by backflow member 6c, is formed " interior backflow ", reflux ratio is that the internal reflux ratio in 200%~500%, this example is 300%~400%.Waste water is given birth in the A/O It is 10~20 days, wherein anoxic zone 4~6 days, aerobic zone 6~15 days, this example to change the total hrt in processing unit 6 In, total hrt is 17 days, wherein anoxic zone 4 days, aerobic zone 13 days.In this example, the A/O biochemical treatment apparatus is The anaerobic-aerobic activated sludge process sewage disposal of existing anaerobic-aerobic activated sludge process sewage-treatment plant or existing structure Pond, is made up of anoxic zone, aerobic zone and backflow member, valve, pipeline, rabbling mechanism, aeration mechanism etc., size be 20m × 20m × 5m (depth).Water outlet COD < 700mg/L, BOD after being handled through A/O biochemical treatment apparatus5< 200mg/L, NH3- N < 30mg/L, TN < 80mg/L.
Storage mud chamber 7a is arranged at the bottom of sedimentation basin 7, and storage mud chamber has sludge outlet, and waste water enters through sedimentation basin precipitation process One step removes the SS and TP in waste water, and the top of sedimentation basin 7 is communicated with the waste water inlet of ozone reactor 8;In operation, waste water is heavy Mud-water separation is realized in shallow lake pond 7, SS is further removed, while aluminium salt or molysite progress chemical dephosphorization are added into sedimentation basin, The TP in waste water is further removed, the sludge precipitated is discharged by storage mud chamber 7a sludge outlet, the aluminium salt or molysite Dosage be 20~100mg/L, aluminium salt is used in this example, dosage is 60~80mg/L, dense according to waste water in specific implementation The adjustable aluminium salt of change or the dosage of molysite of degree;The partial sludge of the bottom of the sedimentation basin 7 storage mud intracavitary passes through backflow In the anoxic zone 6a that device 7b flows back in A/O biochemical treatment apparatus, return sludge ratio is 50~100%, for maintaining A/O to give birth to Change the activated sludge concentration of processing unit;Waste water SS < 100mg/L, TP < 6mg/L after being handled through sedimentation basin.Specific implementation In, the excess sludge of storage mud intracavitary is then discharged into the mud storage pool 11 set in addition by the sludge outlet 7a of storage mud chamber.
There is ozone valve actuating mechanism 8a in the ozone reactor 8, waste water is connect in the ozone reactor 8 with ozone Reaction is touched, further COD, BOD in reduction waste water, the coloured groups in waste water are destroyed, and the colourity of waste water is effectively reduced, institute The wastewater outlet for stating ozone reactor 8 is communicated by pipe fitting with the bottom of BAF 9, and pump 8b is set on the pipe fitting;Make In industry, ozone by valve actuating mechanism distribution, and serve in ozone reactor the waste water in pneumatic stirring, ozone reactor 8 with Ozone in entered ozone reactor 8 carries out the organic pollutant of the difficult for biological degradation in haptoreaction, waste water in ozone Strong oxidation under be oxidized, macromolecular is changed into small molecule, it is easy to biochemical degradation, and the biodegradability of waste water is improved, and is follow-up BAF biochemical treatment create conditions;Partial organic substances are inorganic matter by exhaustive oxidation simultaneously, and further reduction is useless COD, BOD in water5, meanwhile, the coloured groups in waste water are destroyed, and the colourity of waste water is effectively reduced;Waste water is in ozone reaction Reaction time (hydraulic detention time) in device 8 is 1~3 hour, and ozone dosage is 0.5~2g/L;In this example, ozone reaction Device is the ozone reactor of existing structure, and size is φ 2.2m × 3m, and reaction time of the waste water in ozonization, (waterpower was stopped Stay the time) about 2 hours, ozone dosage is 1.0~1.5g/L, and the tail gas produced by ozone reactor is through corresponding ozone decomposed Device is discharged after decomposing.Waste water COD < 500mg/L, BOD after being handled through ozone reactor550 times of < 150mg/L, colourity <.
The inner chamber bottom of BAF 9 is provided with aeration component 9a, and there are biological filter bed of material 9b, aeration and biological filter in middle part Pond 9 carries out biological treatment to waste water, further eliminates COD, BOD in waste water5、TN、NH3- N, while realizing to remaining SS's Remove, the top of BAF 9 is communicated with sterilization pool 10.In operation, aeration component provides air by compressed air source unit and exposed Waste water in gas, BAF 9 is fully contacted with the microbial film in the biological filter bed of material, and the organic matter in degrading waste water is simultaneously Nitration denitrification denitrogenation is carried out, further to eliminate COD, BOD in waste water5、TN、NH3- N, meanwhile, BAF Filtering function is to realize the removal to remaining ss suspended solid;In this example, BAF is filtered for the aeration and biological of existing structure Pond, using ceramic grain filter, 3~4m/h of filtering velocity, the water outlet dissolved oxygen of BAF is not higher than 5mg/L, BAF Periodically backwashed using its water outlet.
The sterilization pool 10 carries out disinfection processing, sterile-processed rear discharged wastewater met the national standard to waste water.Disinfectant can be used Chlorine dioxide, ozone, bleaching powder etc.;Disinfectant is used as using chlorine dioxide in this implementation.
In specific implementation, the sludge in mud storage pool 11 is separately disposed after being handled through device for dehydrating sladge waste;Device for dehydrating sladge waste Can be using centrifugal dehydrator or belt type dewaterer etc., this example uses centrifugal dehydrator, the sludge outward transport after dehydration.
After waste water is handled through the utility model device, pollutant concentration value and pollutants removal rate are as follows:
Go out water pollutant index to be superior to《Integrated wastewater discharge standard (GB8978-1996)》In " grade III Standard " and 《Sewage is discharged into town sewer water standard》" B grades " standard in GB/T 31962-2015.

Claims (4)

1. a kind of kitchen garbage, waste-water processing unit, it is characterized in that including:Oil removal preliminary sedimentation tank (1), regulating reservoir (2), the first pH are adjusted Save pond (3), Ammonia blowing-out tower (4), the 2nd pH regulating reservoirs (5), A/O biochemical treatment apparatus (6), sedimentation basin (7), ozone reactor (8), BAF (9), sterilization pool (10);
Oil slick baffle plate (1a) is arranged at oil removal preliminary sedimentation tank (1) top, and sludge bucket (1b) is arranged at bottom, and sludge bucket has sludge outlet (1c), the wastewater outlet of oil removal preliminary sedimentation tank (1) is communicated with the regulating reservoir (2), and oil removal preliminary sedimentation tank carries out oil removal to waste water, just sunk Processing, removes most suspended substances SS;
The regulating reservoir (2) communicates with the first pH regulating reservoirs (3), and waste water water, water quality are adjusted regulating reservoir (2);
There is the first rabbling mechanism (3a) in the first pH regulating reservoirs (3), the first pH regulating reservoirs (3) inner chamber simultaneously adds component with alkali Communicate, the first pH regulating reservoirs (3) carry out first time regulation to the pH value of waste water, make the form of ammonia nitrogen in waste water by NH4 +It is converted into Free ammonia (NH3);
Offgas outlet (4a) is arranged at Ammonia blowing-out tower (4) top, and air intlet (4b), Ammonia blowing-out tower (4) inner chamber top are arranged at bottom There is water distribution component (4c), the waste water inlet of water distribution component (4c) is communicated with the first pH regulating reservoirs (3), Ammonia blowing-out tower (4) Wastewater outlet is communicated with the 2nd pH regulating reservoirs (5), and waste water is handled through Ammonia blowing-out tower, realizes stripping and the removal of free ammonia, Make the carbon-nitrogen ratio (BOD in waste water5:TKN) improve;
Have the second rabbling mechanism (5a) in the 2nd pH regulating reservoirs (5), the 2nd pH regulating reservoirs (5) inner chamber and with sulfuric acid (H2SO4) Add component to communicate, the 2nd pH regulating reservoirs (5) are communicated with the anoxic zone (6a) in the A/O biochemical treatment apparatus (6), the 2nd pH Regulating reservoir carries out second to the pH value of waste water and adjusted, and forms the suitable growing environment of microorganism;
Aerobic zone (6b) in the A/O biochemical treatment apparatus (6) is communicated with the sedimentation basin (7), A/O biochemical treatment apparatus (6) biochemical treatment is carried out to waste water, effectively removes most COD, BOD5, further remove NH3- N, TN, effectively go dephosphorization;
Storage mud chamber (7a) is arranged at sedimentation basin (7) bottom, and storage mud chamber has sludge outlet, sedimentation basin (7) top and the ozone The waste water inlet of reactor (8) is communicated, and waste water further removes ss suspended solid and TP in waste water through sedimentation basin (7) precipitation process;
There is ozone valve actuating mechanism (8a) in the ozone reactor (8), the wastewater outlet of ozone reactor (8) is given birth to the aeration The bottom in thing filter tank (9) is communicated, and waste water carries out haptoreaction in ozone reactor (8) with ozone, further in reduction waste water COD, BOD5, the coloured groups in waste water are destroyed, and the colourity of waste water is effectively reduced;
BAF (9) the inner chamber bottom is provided with aeration component (9a), and there are the biological filter bed of material (9b), aeration and biological in middle part Filter tank (9) top is communicated with the sterilization pool (10), and BAF (9) carries out biological treatment to waste water, further removes COD, BOD in waste water5、TN、NH3- N, while realizing the removal to remaining SS;
The sterilization pool (10) carries out disinfection processing, sterile-processed rear discharged wastewater met the national standard to waste water.
2. according to a kind of kitchen garbage, waste-water processing unit described in claim 1, it is characterized in that, in the Ammonia blowing-out tower (4) There is packing layer (4f) in the middle part of chamber, waste water is after Ammonia blowing-out tower processing, the carbon-nitrogen ratio (BOD in waste water5:TKN) improve to 4:1 ~6:1.
3. according to a kind of kitchen garbage, waste-water processing unit described in claim 1, it is characterized in that, the A/O biochemical treatments dress Muddy water mixed solution in aerobic zone (6b) to be put to be flowed back in anoxic zone (6a) by backflow member (6c), reflux ratio is 200%~ 500%.
4. according to a kind of kitchen garbage, waste-water processing unit described in claim 1, it is characterized in that:
The partial sludge of sedimentation basin (7) the bottom storage mud intracavitary is flowed back in A/O biochemical treatment apparatus by reflux (7b) In anoxic zone (6a), return sludge ratio is 50~100%;
The dosage that aluminium salt or molysite are added in sedimentation basin (7) is 20~100mg/L.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106430845A (en) * 2016-11-21 2017-02-22 中机国际工程设计研究院有限责任公司 Kitchen garbage wastewater treatment apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106430845A (en) * 2016-11-21 2017-02-22 中机国际工程设计研究院有限责任公司 Kitchen garbage wastewater treatment apparatus

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