CN203904167U - Biochemical sludge treatment system - Google Patents

Biochemical sludge treatment system Download PDF

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Publication number
CN203904167U
CN203904167U CN201420330707.4U CN201420330707U CN203904167U CN 203904167 U CN203904167 U CN 203904167U CN 201420330707 U CN201420330707 U CN 201420330707U CN 203904167 U CN203904167 U CN 203904167U
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China
Prior art keywords
tank
sludge
reactor
pond
sludge treatment
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Expired - Fee Related
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CN201420330707.4U
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Chinese (zh)
Inventor
吴浩
陈立红
陈晓雷
王淼
史兴隆
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NANJING DELEI SCIENCE AND TECHNOLOGY Co Ltd
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NANJING DELEI SCIENCE AND TECHNOLOGY Co Ltd
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Abstract

The utility model discloses a biochemical sludge treatment system which comprises a sludge treatment device, a sludge concentration tank, a homogenizing adjustment tank, a neutralizing tank, a primary sedimentation tank, an anaerobic tank, a first-level aerobic tank, a secondary sedimentation tank, a second-level aerobic tank, a final sedimentation tank, an air flotation tank, a filter press and a monitoring tank, wherein the sludge concentration tank, the homogenizing adjustment tank, the neutralizing tank, the primary sedimentation tank, the anaerobic tank, the first-level aerobic tank, the secondary sedimentation tank, the second-level aerobic tank, the final sedimentation tank, the air flotation tank and the monitoring tank are sequentially connected; the filter press is connected with the first-level aerobic tank; and the sludge concentration tank is connected with the anaerobic tank, the secondary sedimentation tank and the final sedimentation tank respectively. The biochemical sludge treatment system also comprises a collection tank, wherein the collection tank is arranged between the sludge concentration tank and the homogenizing adjustment tank. According to the system disclosed by the utility model, large-scale production can be realized, the sludge quantity is effectively reduced, the moisture content of sludge cakes, the flocculant dosage and the energy consumption in the production process are reduced, and repeated circular process can be performed.

Description

Biochemical sludge treatment system
Technical field
The utility model relates to field of environmental engineering sewage treatment, especially relates to a kind of biochemical sludge treatment system.
Background technology
In the processing of China's trade effluent, general also the most ripe most widely used method is biological activity mud method, it has advantages of investment and running cost is low, treatment effect is stable, but it exists a maximum drawback, in operational process, can produce a large amount of excess sludges.Excess sludge contains the hazardous and noxious substances of a great deal of and the organism of stabilization not conventionally, need to carry out appropriate processing and disposal in time, otherwise will cause direct or potential pollution to environment.Current China municipal sludge treatment capacity approximately 30,000,000,000 m 3/ a, biochemical sludge approximately 200,000,000 m of generation water ratio 98% 3/ a, excess sludge production will increase with average annual 15%.1000 ten thousand t/a and refinerys, produce biochemical water-containing sludge approximately 10,000 t per year.Excess sludge transportation and processing costs account for overall running cost than great, also face many condition restriction in processing.Along with promulgation and the enforcement of some new ENVIRONMENTAL LAW, the depth requirements of sewage disposal and range are required all will significantly increase, will inevitably cause the output of excess sludge increasing, the processing of mud also will become a great problem of environmental area with disposal.
Biochemical excess sludge main component comprises water, microorganism, microbe metabolite, inorganic solid, and biochemical excess sludge is very large to environmental hazard, has a large amount of microorganisms, virus, parasite, organism, nitrogen, phosphorus, stench.The bulky reason of biochemical sludge is in mud, to exist the macromolecule organic with property, these macromolecule organics cause interstitial water, surface water and exist in conjunction with water, and water ratio is high.Wherein free water accounts for total moisturely approximately 70%, does not adhere to or combination with mud, and separation is easier to, can gravity separation; Because of the water that capillary phenomenon keeps, separation is more difficult, needs the methods such as use is centrifugal, vacuum; Surface water is attached to colloid surface by hydrogen bond, and separation difficulty could remove by mechanical system after conditioning; In conjunction with water, by chemical bond, be combined with mud, account for total moisturely 4%, separation is very difficult, adopts general physico-chemical process to be difficult to separation, is the main component that forms dewatered sludge; Internal water is intracellular water, and seldom, it is more difficult to remove for the water yield.
The disposal options of biochemical sludge mainly comprises landfill, soil improvement and drying and incinerating, and in excess sludge, may contain plurality of heavy metal, pathogenic micro-organism and persistence difficult for biological degradation organic pollutant, some country that is applied in of soil improvement is prohibited, and landfill and drying and incinerating processing mode also will be in the face of land resources day by day in short supply and strict environmental regulation restrictions.
Existing biochemical sludge treatment process has: dehydration: water ratio is generally reduced to 80%-84%, and residual sludge quantity is still very huge, and pollutent is without decrement.Burn: decrement is effective, but investment and running cost are high, complicated operation, and produce flying dust danger thing, flue gas difficult treatment.Digestion: processing cost is lower, but only can remove partial organic substances, and mud decrement is not remarkable.Mud can not fully react with ozone, and sludge treatment is thorough not, and ozone utilization rate is low, causes ozone input ratio high, and energy consumption is high, and running cost is high, is difficult to large-scale promotion application.
Lack at present a kind of biochemical sludge treatment system that can effectively reduce sludge quantity.
Utility model content
In order to address the above problem, the purpose of this utility model is to provide a kind of biochemical sludge treatment system that can effectively reduce sludge quantity.
In order to realize above-mentioned technical purpose, the technical solution adopted in the utility model is as follows: a kind of biochemical sludge treatment system, is characterized in that: biochemical sludge treatment system comprises sludge treatment equipment, sludge thickener, homogeneous equalizing tank, neutralization tank, preliminary sedimentation tank, anaerobic pond, one-level Aerobic Pond, second pond, secondary Aerobic Pond, final deposition pool, air flotation pool, pressure filter and monitoring pond;
Described sludge thickener, homogeneous equalizing tank, neutralization tank, preliminary sedimentation tank, anaerobic pond, one-level Aerobic Pond, second pond, secondary Aerobic Pond, final deposition pool, air flotation pool and monitoring pond are connected successively; Described pressure filter is connected with one-level Aerobic Pond;
Described sludge thickener is connected with anaerobic pond, second pond and final deposition pool respectively;
Described sludge treatment equipment comprises the pump that connects by pipeline successively, for ozone generating-device, ejector and the reactor of ozone are provided in reactor; In described ozone generating-device, be provided with the oxygenerator and the ozone machine that by pipeline, connect; Described reactor is one or more, and described reactor is in parallel or be connected in series by pipeline; Described reactor internal surface is coated with for improving the catalyst layer of ozone to mud oxidation capacity; The bottom of described reactor is provided with mud inlet, and the top of described reactor is provided with mud discharging mouth.
Further, described biochemical sludge treatment system also comprises collecting tank, and described collecting tank is arranged between sludge thickener and homogeneous equalizing tank.
Further, the diameter D of described reactor is 32mm≤d≤500mm, and length L is 0.2m≤L≤10m.
Further, described inside reactor is provided with helical fin plate, and the diameter D of described reactor is 100mm≤D≤350mm, and length L is 0.3m≤L≤3m.
Further, the diameter D of described reactor is 200mm, and length L is 1.5m.
Beneficial effect: the utility model can large-scale production, effectively reduces sludge quantity, reduces moisture content of the cake, reduces flocculant dosage, reduces production process energy consumption, can carry out repeatedly circular treatment, eliminates the stench of outward transport mud cake.The utlity model has following advantage:
(1) thickened sludge after the sludge treatment equipment broken wall treatment in the utility model, the water ratio of mud reduces, and settling property strengthens greatly, and the color of mud shoals, and stink alleviates even disappearance.The returned sluge of part through biochemical treatments that repeatedly circulates such as anaerobic-aerobics, further reduces moisture percentage in sewage sludge again, thoroughly reduces outward transport sludge quantity, thereby reaches the object of mud decrement.
(2) in the thickened sludge after broken wall treatment, contain abundant organic carbon source, the denitrogenation dephosphorizing that to be back to anaerobic pond be microorganism provides carbon source, can improve the ratio of C:N:P in anaerobic pond, increase the efficiency of Microbial denitrogenation dephosphorization, be conducive to the decline of sewage discharge ammonia nitrogen index.Be back in anaerobic pond mud the content of nitrogen and phosphorus also higher, in the time of can meeting biological process and process, the nutritional needs of microorganism, provides nutritive substance for microorganism cells is synthetic.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model;
Wherein: 1 sludge treatment equipment; 2 sludge thickeners; 3 homogeneous equalizing tanks; 4 neutralization tanks; 5 preliminary sedimentation tanks; 6 anaerobic ponds; 7 one-level Aerobic Ponds; 8 second ponds; 9 secondary Aerobic Ponds; 10 final deposition pools; 11 air flotation pools; 12 pressure filter; 13 monitoring ponds.
Embodiment
To the utility model, do further specific descriptions by specific embodiment below, but can not be interpreted as it is the restriction to the utility model protection domain.
Embodiment 1
As shown in Figure 1, dotted line is wherein mud line, and solid line is waterline.A kind of biochemical sludge treatment system of the present utility model, biochemical sludge treatment system comprises sludge treatment equipment 1, sludge thickener 2, homogeneous equalizing tank 3, neutralization tank 4, preliminary sedimentation tank 5, anaerobic pond 6, one-level Aerobic Pond 7, second pond 8, secondary Aerobic Pond 9, final deposition pool 10, air flotation pool 11, pressure filter 12 and monitoring pond 13; Sludge treatment equipment 1 is stretched into sludge thickener 2 bottoms by pipe joint, suck pending sludge water, carry out redox reaction in system, the mud discharging mouth of the reactor of the mud in redox product in sludge treatment equipment 1 is discharged, get back to sludge thickener 2, continue circular treatment;
Supernatant liquor in sludge thickener 2 is back to one-level Aerobic Pond 7 and homogeneous equalizing tank 3, in described supernatant liquor, contains organic carbon source;
Described sludge thickener 2, homogeneous equalizing tank 3, neutralization tank 4, preliminary sedimentation tank 5, anaerobic pond 6, one-level Aerobic Pond 7, second pond 8, secondary Aerobic Pond 9, final deposition pool 10, air flotation pool 11 and monitoring pond 13 are connected successively; Described pressure filter 12 is connected with one-level Aerobic Pond 7;
Described sludge thickener 2 is connected with anaerobic pond 6, second pond 8 and final deposition pool 10 respectively.In thickened sludge after broken wall treatment, contain abundant organic carbon source, be back to and in anaerobic pond 6, carry out anaerobic-aerobic biochemical treatment; The denitrogenation dephosphorizing that to be back to anaerobic pond 6 be microorganism provides carbon source, increases the efficiency of the denitrogenation dephosphorizing of microorganism; Supernatant liquor in final deposition pool 10 enters air flotation pool 11, and air flotation pool 11 is removed the floating matter in sludge water, and scum silica frost is carried out to concentration;
Sludge water, in the outlet sampling in monitoring pond 13, detects the sludge water of sampling; If the water quality in monitoring pond 13 is below standard, get back to secondary Aerobic Pond 9 biochemical treatment again; If the water quality reaching standard in monitoring pond 13, is discharged by monitoring pond 13.
If the water quality in monitoring pond 13 is below standard, sludge water enters homogeneous equalizing tank 3 and carries out circular treatment.The Passing Criteria of water quality is national standard.
Described biochemical sludge treatment system also comprises collecting tank, and described collecting tank is arranged between sludge thickener 2 and homogeneous equalizing tank 3.
Described sludge treatment equipment 1 comprises the pump that connects by pipeline successively, for ozone generating-device, ejector and the reactor of ozone are provided in reactor; In described ozone generating-device, be provided with the oxygenerator and the ozone machine that by pipeline, connect; Described reactor is one or more, and described reactor is in parallel or be connected in series by pipeline; Described reactor internal surface is coated with for improving the catalyst layer of ozone to mud oxidation capacity; The bottom of described reactor is provided with mud inlet, and the top of described reactor is provided with mud discharging mouth.
The diameter D of described reactor is 32mm≤d≤500mm, and length L is 0.2m≤L≤10m.
Described inside reactor is provided with helical fin plate, and the diameter D of described reactor is 100mm≤D≤350mm, and length L is 0.3m≤L≤3m.
The diameter D of described reactor is 200mm, and length L is 1.5m.
Certain pharmaceutical factory's sludge treatment project, mud is mainly derived from the MBR membrane bioreactor system in biochemical system, and UASB system for anaerobic treatment sludge quantity is few, substantially there is no spoil disposal.Mud is mainly the residue biochemical sludge that aerobe produces.Also have in addition the old mud after 270 tons of press filtrations, water ratio 85% left and right, this mud is prepared to reenter system and is carried out minimizing processing.
Mud decrement is by monthly processing the mud that 15-22t water ratio is 85% left and right, and concentration basin volume is about 65m 3, storing old mud has denseer irritating smell.
Sludge thickener 2 volume 65m 3useful volume 45m 3in sludge treatment equipment non-stop run, of sludge pump, part sludge reflux to remaining tank is made after suitable stop, overflow outlet by remaining tank enters heating bath, after mixing, heat with sanitary sewage, again enter biochemical system, utilize mud itself to can be microorganism carbon source is provided, regulate C/N ratio, promote the nitric efficiency of microorganism, reduce sludge quantity.The flow range of sludge pump is at 0-2m 3/ h is adjustable, and remaining tank model adopts DN1000, cubic capacity 1.55m 3, residence time scope is 1-7h.Sludge reflux to the total amount of anaerobic pond 6 can progressively increase in passing in time.First stage sludge reflux amount can reflux according to 10% of the useful volume of sludge thickener 2, i.e. 4.5m 3.Subordinate phase quantity of reflux refluxes according to 20% of the useful volume of sludge thickener 2, i.e. 9m 3, by that analogy.In the situation that do not affect effluent quality and also do not affect the normal work of biochemical system, make gradually quantity of reflux maximize.
The storage mud of water ratio 85% left and right can be at the sewage of high density and sludge reflux is stable in batches adds in right amount afterwards, the dosage of mud can be controlled in 0.25-0.5t/d and throws in several times, each 50kg left and right of throwing in, can thin up in the situation that of conditions permit makes its water ratio reach 99% left and right and adds.
Table 1 is the mud decrement data of the present embodiment;
Table 1
Beneficial effect: the utility model can large-scale production, effectively reduces sludge quantity, reduces moisture content of the cake, reduces flocculant dosage, reduces production process energy consumption, can carry out repeatedly circular treatment, eliminates the stench of outward transport mud cake.The utlity model has following advantage:
(1) thickened sludge after 1 broken wall treatment of the sludge treatment equipment in the utility model, the water ratio of mud reduces, and settling property strengthens greatly, and the color of mud shoals, and stink alleviates even disappearance.The returned sluge of part through biochemical treatments that repeatedly circulates such as anaerobic-aerobics, further reduces moisture percentage in sewage sludge again, thoroughly reduces outward transport sludge quantity, thereby reaches the object of mud decrement.
(2) in the thickened sludge after broken wall treatment, contain abundant organic carbon source, the denitrogenation dephosphorizing that to be back to anaerobic pond 6 be microorganism provides carbon source, can improve the ratio of C:N:P in anaerobic pond 6, increase the efficiency of Microbial denitrogenation dephosphorization, be conducive to the decline of sewage discharge ammonia nitrogen index.Be back in anaerobic pond 6 mud the content of nitrogen and phosphorus also higher, in the time of can meeting biological process and process, the nutritional needs of microorganism, provides nutritive substance for microorganism cells is synthetic.
More than show and described ultimate principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification sheets, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and the claimed scope of the utility model is defined by appending claims, specification sheets and equivalent thereof.

Claims (5)

1. a biochemical sludge treatment system, is characterized in that: biochemical sludge treatment system comprises sludge treatment equipment, sludge thickener, homogeneous equalizing tank, neutralization tank, preliminary sedimentation tank, anaerobic pond, one-level Aerobic Pond, second pond, secondary Aerobic Pond, final deposition pool, air flotation pool, pressure filter and monitoring pond;
Described sludge thickener, homogeneous equalizing tank, neutralization tank, preliminary sedimentation tank, anaerobic pond, one-level Aerobic Pond, second pond, secondary Aerobic Pond, final deposition pool, air flotation pool and monitoring pond are connected successively; Described pressure filter is connected with one-level Aerobic Pond;
Described sludge thickener is connected with anaerobic pond, second pond and final deposition pool respectively;
Described sludge treatment equipment comprises the pump that connects by pipeline successively, for ozone generating-device, ejector and the reactor of ozone are provided in reactor; In described ozone generating-device, be provided with the oxygenerator and the ozone machine that by pipeline, connect; Described reactor is one or more, and described reactor is in parallel or be connected in series by pipeline; Described reactor internal surface is coated with for improving the catalyst layer of ozone to mud oxidation capacity; The bottom of described reactor is provided with mud inlet, and the top of described reactor is provided with mud discharging mouth.
2. biochemical sludge treatment system according to claim 1, is characterized in that: described biochemical sludge treatment system also comprises collecting tank, and described collecting tank is arranged between sludge thickener and homogeneous equalizing tank.
3. biochemical sludge treatment system according to claim 1, is characterized in that: the diameter D of described reactor is 32mm≤d≤500mm, and length L is 0.2m≤L≤10m.
4. biochemical sludge treatment system according to claim 3, is characterized in that: described inside reactor is provided with helical fin plate, and the diameter D of described reactor is 100mm≤D≤350mm, and length L is 0.3m≤L≤3m.
5. biochemical sludge treatment system according to claim 4, is characterized in that: the diameter D of described reactor is 200mm, and length L is 1.5m.
CN201420330707.4U 2014-06-19 2014-06-19 Biochemical sludge treatment system Expired - Fee Related CN203904167U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104071955A (en) * 2014-06-19 2014-10-01 南京德磊科技有限公司 Sludge biochemical treatment system and method
CN107117781A (en) * 2017-06-30 2017-09-01 海宁瑞星皮革有限公司 A kind of Leather waste water treatment system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104071955A (en) * 2014-06-19 2014-10-01 南京德磊科技有限公司 Sludge biochemical treatment system and method
CN107117781A (en) * 2017-06-30 2017-09-01 海宁瑞星皮革有限公司 A kind of Leather waste water treatment system
CN107117781B (en) * 2017-06-30 2019-09-13 海宁瑞星皮革有限公司 A kind of Leather waste water treatment system

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141029

Termination date: 20190619

CF01 Termination of patent right due to non-payment of annual fee