CN103922527B - Integrated sewage water advanced treatment apparatus and technique thereof - Google Patents
Integrated sewage water advanced treatment apparatus and technique thereof Download PDFInfo
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- CN103922527B CN103922527B CN201410114030.5A CN201410114030A CN103922527B CN 103922527 B CN103922527 B CN 103922527B CN 201410114030 A CN201410114030 A CN 201410114030A CN 103922527 B CN103922527 B CN 103922527B
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Abstract
The present invention relates to integrated sewage water advanced treatment apparatus and technique thereof, be provided with mud return line bottom the settling region of this device, mud return line one end is connected with flocculation zone, and the other end is provided with shore pipe; Filter-cloth filtering district and sterilizating area are arranged and adjacent with settling region up and down.Sewage enters mixing zone through water inlet pipe, flocculation zone is entered through the first water hole after mixing, settling region is entered through the second water hole after flocculation, muddy water is after settling region precipitate and separate, and supernatant liquor enters filter-cloth filtering district, after filtration by effluent weir overflow after flase floor, water outlet enters sterilizating area through water leg by bottom mesh, discharged by rising pipe after the 3rd water hole after sterilization, sludge part is back to flocculation zone through mud return line, and part is discharged through shore pipe.Technical process of the present invention is reasonable, and the global design of device is compact, the little and less developer of small accommodation area, head loss.
Description
Technical field
The invention belongs to sewage treatment area, relate to waste disposal plant, be specifically related to integrated sewage water advanced treatment apparatus and technique thereof.
Background technology
Along with the development of sewage disposal technology, the sewage through secondary biochemical treatment meets the requirement of discharging substantially, and only needing to carry out advanced treatment to part water-quality guideline can qualified discharge or reuse.The selection of sewerage advanced treatment process is due to the difference of processing target and effluent quality, and treatment process also has difference greatly.Sensu lato scope comprises denitrogenation dephosphorizing, the removal of suspended substance, organic removal and sterilization etc.In the selection of many advanced treatment process, " coagulation-precipitation-filtration-sterilization " process combination is because it is stable, and removal efficiency is high and gain great popularity.Particularly for the removal of suspended substance and total phosphorus, the stably reaching standard of water outlet can be realized.
For the advanced treatment of sewage work, often have that reserved place is little, head requires high present situation.This just requires that advanced treatment apparatus must possess the little objective requirement of small accommodation area, head loss, also will reduce chemical feeding quantity and operation energy consumption as far as possible simultaneously.
Summary of the invention
The technical problem solved: an object of the present invention is to provide integrated sewage water advanced treatment apparatus, solve saving floor space, reduces the technical problem of head loss and minimizing chemical feeding quantity.
Another object of the present invention is to provide integrated sewage water advanced treatment process, process intensification, and head loss is little.
Technical scheme: the present invention achieves the above object by the following technical programs.
The invention provides integrated sewage water advanced treatment apparatus, comprise mixing zone, flocculation zone, settling region, filter-cloth filtering district and sterilizating area, wherein side, mixing zone is provided with water inlet pipe, mixing zone is connected with flocculation zone via the first water hole, flocculation zone is connected with settling region via the second water hole, opposite side top, settling region is provided with effluent weir, filter-cloth filtering district is provided with below effluent weir, insertion slot type filter core is set in filter-cloth filtering district, front end, filter-cloth filtering district is provided with flase floor, rear end, filter-cloth filtering district is provided with water leg, mesh is provided with bottom water leg, filter-cloth filtering is provided with sterilizating area below district, sterilizating area inside is provided with vertical baffle, the 3rd water hole is formed between baffle plate and sterilizating area bottom surface, rising pipe is provided with in the middle part of sterilizating area, it is characterized in that: bottom described settling region, be provided with mud return line, mud return line one end is connected with flocculation zone, the other end is provided with shore pipe, described filter-cloth filtering district and described sterilizating area are arranged and adjacent with described settling region up and down.
Front end, described filter-cloth filtering district is provided with flase floor, to retain the large particulate matters such as the mud scum that settling region may bring out, avoids the blocking of follow-up filter cloth.
The grid gap of described flase floor is 1 ~ 2mm, and material is stainless steel.
Rear end, described filter-cloth filtering district is provided with water leg, is provided with mesh bottom water leg, and the aperture of mesh is 3 ~ 6mm, and water leg is funnel type, and material is that stainless steel plate is spliced.
The selection of described mixing zone, flocculation zone and settling region can be various ways, is not limited to a kind of form.For example, described mixing zone can adopt the mixing of tubular-mix, dividing plate, water pump mixing or mechanical stirring mixed form; Described flocculation zone can adopt grid flocculation, folded plate flocculation or mechanical flocculation form.Described settling region can adopt advection sedimentation, tube settling, sloping plate deposition, spoke stream to precipitate or perpendicular stream precipitation forms.
Described sterilizating area and described filter-cloth filtering district setting up and down, inside arranges sterilizing unit, adopts submerged ultraviolet disinfecting tube to arrange.
Arrange insertion slot type filter core in described filter-cloth filtering district, described insertion slot type filter core is made up of stainless steel frame and trevira filter cloth, and filter core thickness is 40 ~ 60mm, and length and width can according to pond body size adjusting.The back flushing of described trevira filter cloth adopts online reciprocating self-priming pump washing unit, and back flushing frequency adopts liquid level and time two-parameter control.During back flushing, the sucker of the reciprocating self-priming pump of guide rail both sides and the wide laminating of filter cloth surface, then carry out reciprocating cleaning, and a meter once back and forth, during cleaning, generally continues 2 ~ 5 times, also can set separately according to carrying out practically situation.The waste water that back flushing produces is discharged by vacuum primingpump, directly can enter water drain discharge according to demand or be back to front end to mix with former water.
The back flushing of described filter cloth adopts online reciprocating self-priming pump washing unit, and back flushing frequency adopts liquid level and time two-parameter control.
The operating parameter of described integrated sewage water advanced treatment apparatus is:
1) settling region return sludge ratio: 1% ~ 4%;
2) settling region liquid level load: 15 ~ 20m
3/ (m
2h);
3) filtering velocity of filter-cloth filtering: 6 ~ 12m/h;
4) selection of other parameters considers water quality and pond type and determines.
Integrated sewage water advanced treatment process is: sewage enters mixing zone through water inlet pipe, flocculation zone is entered through the first water hole after mixing, settling region is entered through the second water hole after flocculation, muddy water is after settling region precipitate and separate, and supernatant liquor enters filter-cloth filtering district, after filtration by effluent weir overflow after flase floor, water outlet enters sterilizating area through water leg by bottom mesh, discharged by rising pipe after the 3rd water hole after sterilization, sludge part is back to flocculation zone through mud return line, and part is discharged through shore pipe.
Beneficial effect:
Advantage of the present invention and effect are:
1) integrated structure: adopt integrated structure, mixing zone, flocculation zone, settling region, filter-cloth filtering district and sterilizating area arranged in order according to water (flow) direction and organically combines, saving the floor space of device; Water outlet water leg in filter-cloth filtering district replaces pipeline water outlet, effectively can reduce the thickness of filter core, thus reduces filter tank volume;
2) head loss is little: organically combined by flow process by coagulation-precipitation-filtration-sterilization process, and each district adopts water hole or effluent weir to be communicated with, and structure is more compact.Filter-cloth filtering district and sterilizating area are adopted the mode building layout up and down jointly, from the engineering measure taked required for the discrepancy in elevation that structure instead of because of settling region and filter-cloth filtering district, such as buried setting in settling region half etc.Described integrated apparatus not only saves floor space, and can make full use of self waterhead, gross head loss only 0.7 ~ 0.9m;
3) sludge reflux is arranged: by arranging sludge reflux, the flocculation agent of the non-complete reaction of part can be carried out secondary reaction, effectively can maintain the comparatively high sludge concentration needed for flocculation, make flco can be easier to produce condensation nucleus, increase flco deadweight, thus be conducive to post precipitation separation, improve removal efficiency, compared with traditional coagulation-depositing technology, can effectively save chemical feeding quantity 10% ~ 30%;
4) improve the stability of system: flase floor effectively can tackle the floating mud impurity in settling region, stablizes the filter-cloth filtering cycle; Mesh can reduce the impact of current to sterilizating area, plays the effect of uniform water distribution; The setting of baffle plate can form effective water seal, makes the complete submergence of ultraviolet lamp tube, ensures sterilization duration of contact and effect;
5) effluent quality is secure: consider in flow process " coagulation-precipitation-filtration-sterilization ", can ensure effluent quality well, particularly to the removal of suspended substance and phosphorus.The physical filtering effect of filter cloth simultaneously can also remove organism and the nitrogen of 5% ~ 15% further.
Accompanying drawing explanation
Fig. 1 is the structural representation of integrated sewage water advanced treatment apparatus of the present invention;
Fig. 2 is the process flow sheet of integrated sewage water advanced treatment apparatus of the present invention.
Wherein, 1-mixing zone; 2-flocculation zone; 3-settling region; 4-filter-cloth filtering district; 5-sterilizating area; 6-water inlet pipe; 7-rising pipe; 8-shore pipe; 9-mud return line; 10-flase floor; 11-insertion slot type filter core; 12-ultraviolet disinfecting tube; 13-water leg; 14-mesh; 15-reciprocating self-priming pump; 161-first water hole; 162-second water hole; 163-the 3rd water hole; 17-baffle plate; 18-effluent weir; 19-guide rail.
Embodiment
The following examples can make the present invention of those skilled in the art comprehend, but do not limit the present invention in any way.
Embodiment 1
Integrated sewage water advanced treatment apparatus, as shown in Figure 1, described device comprises mixing zone 1, flocculation zone 2, settling region 3, filter-cloth filtering district 4 and sterilizating area 5, wherein side, mixing zone 1 is provided with water inlet pipe 6, mixing zone 1 is connected with flocculation zone 2 via the first water hole 161, flocculation zone 2 is connected with settling region 3 via the second water hole 162, opposite side top, settling region 3 is provided with effluent weir 18, filter-cloth filtering district 4 is provided with below effluent weir 18, insertion slot type filter core 11 is set in filter-cloth filtering district 4, front end, filter-cloth filtering district 4 is provided with flase floor 10, rear end, filter-cloth filtering district 4 is provided with water leg 13, mesh 14 is provided with bottom water leg 13, sterilizating area 5 is provided with below filter-cloth filtering district 4, sterilizating area 5 inside is provided with vertical baffle 17, the 3rd water hole 163 is formed between baffle plate 17 and sterilizating area 5 bottom surface, rising pipe 7 is provided with in the middle part of sterilizating area 5, mud return line 9 is provided with bottom described settling region 3, mud return line 9 one end is connected with flocculation zone 2, the other end is provided with shore pipe 8, filter-cloth filtering district 4 and sterilizating area about 5 are arranged and adjacent with settling region 3.
Arrange the insertion slot type filter core 11 be made up of stainless steel frame and trevira filter cloth in filter-cloth filtering district 4, back flushing adopts reciprocating self-priming pump 15 washing unit, arranges liquid level and time two-parameter control.During back flushing, the sucker of the reciprocating self-priming pump 15 of guide rail 19 both sides and the wide laminating of filter cloth surface, then carry out reciprocating cleaning, and a meter once, during cleaning, is twice back and forth.The waste water that back flushing produces is discharged by vacuum primingpump, directly can enter water drain discharge according to demand or be back to front end to mix with former water.
Sterilizating area 5 and filter-cloth filtering district 4 adopt and build layout jointly up and down, and inside arranges sterilizing unit, adopt submerged ultraviolet disinfecting tube 12 to arrange.
Sewage enters mixing zone 1 through water inlet pipe 6, flocculation zone 2 is entered through the first water hole 161 after mixing, settling region 3 is entered through the second water hole 162 after flocculation, muddy water is after settling region 3 precipitate and separate, and supernatant liquor enters filter-cloth filtering district 4, after filtration by effluent weir 18 overflow after flase floor 10, water outlet enters sterilizating area 5 through water leg 13 by bottom mesh 14, discharged by rising pipe 7 after the 3rd water hole 163 after sterilization, sludge part is back to flocculation zone 2 through mud return line 9, and part is discharged through shore pipe 8.
Respectively the effect of each functional zone and major parts is described in detail below.
1) mixing zone: mixing is one of topmost link in flocculation, Main Function has been medicament and fully the mixing of water.The hydrolysate of coagulating agent is mixed into rapidly each thin portion of water body, and makes water-borne glue body particle de-steady, and produce the prerequisite that cohesion is the flocculating effect obtained, be also the key of saving dosage simultaneously.The essence of mixed problem is mixture hydrolysate diffusion problem in water.The adoptable form in this district is multiple, can be tubular-mix, dividing plate mixing, water pump mixing and mechanical stirring mixing etc.
2) flocculation zone: major function is suspended particle in flocculation agent and water is reacted form stable micelle.Former water enters flocculation zone with flocculation agent after mixing zone fully mixes, and in flocculation zone, de-steady impurity and body refuse particle collision condense and reach good flocculating effect, form heavy and large flocs unit.Flocculation growth process is the process of molecule contact-impact.The quality of flocculating effect depends on that the rear high-molecular complex produced of coagulating agent hydrolysis forms the concatenation ability of adsorption bridging on the one hand, depend on the other hand the probability of molecule contact-impact and how to control them and carry out rational effective collision, namely depending on coagulating agent kind and dynamic conditions respectively.The adoptable form in this district is multiple, can be grid flocculation, folded plate flocculation and machinery flocculation etc.
3) settling region: muddy water is separated at this, bottom is provided with shore pipe can regular spoil disposal, separately has mud return line thickened sludge can be back to flocculation zone.The adoptable form in this district is multiple, the forms such as advection sedimentation, inclined tube (plate) precipitation, spoke stream precipitation and perpendicular stream precipitation.
4) filter-cloth filtering district: this district is settling region effluent weir immediately, makes full use of the water level discrepancy in elevation, carries out filter-cloth filtering, can remove suspended substance in water further, and the filteration also by filter cloth removes certain organism and nitrogen phosphorus further.
5) sterilizating area: this district and filter-cloth filtering district take the mode built jointly up and down, make full use of the water level discrepancy in elevation, and decrease floor space.By being discharged by rising pipe after ultraviolet disinfecting lamp tube sterilization.
6) mud return line: the object of sludge reflux is the comparatively high sludge concentration needed for maintenance flocculation, makes flco can be easier to produce condensation nucleus, increases flco deadweight, thus be conducive to post precipitation separation.In addition, the flocculation agent of the non-complete reaction of part of having carried under one's arms in returned sluge, also can carry out secondary reaction in flocculation zone, thus save chemical feeding quantity.
8) flase floor: major function is to retain the large particulate matters such as mud scum that settling region may bring out, avoiding the blocking of follow-up filter cloth.In the present embodiment, the grid gap of flase floor is 1mm, and material is stainless steel;
9) water leg: function water leg replaces pipeline water outlet, effectively can reduce the thickness of filter core.Be limited to the requirement of water flow to rising pipe caliber, the filter core thickness of filter-cloth filtering is generally 80 ~ 100mm, and after the present invention adopts water leg, can in the bottom water outlet of full wafer filter core, so be not limited to the water yield, the thickness of filter-cloth filtering district filter core can be 40 ~ 60mm, thus reduces filter tank volume;
10) mesh: usually comparatively intensive, major function is uniform water distribution, slows down the impact to sterilizating area.In the present embodiment, water leg is funnel type, and material is that stainless steel plate is spliced, and bottom land is mesh 14, and aperture is 5mm.
Described device adopts integrated structure, mixing zone, flocculation zone, settling region, filter-cloth filtering district and sterilizating area is arranged in order according to water (flow) direction and organically combines, and each district adopts water hole or effluent weir to be communicated with, and structure is more compact.Filter-cloth filtering district and sterilizating area are adopted the mode building layout up and down jointly, from the engineering measure taked required for the discrepancy in elevation that structure instead of because of settling region and filter-cloth filtering district, such as buried setting in settling region half etc.Described integrated apparatus not only saves floor space, and can make full use of self waterhead, and head loss obviously reduces, and is generally 0.7 ~ 0.9m.
Common flocculation mode does not adopt sludge reflux, only relies on self pond body optimization to improve flocculation efficiency.High dense settling pond has sludge reflux, but is only limitted to machinery flocculation-inclined tube (plate) mode that precipitates, and the present invention has widened the selection of flocculation-coprecipitation mode.
Flase floor effectively can tackle the floating mud impurity in settling region, stablizes the filter-cloth filtering cycle; Water leg replaces pipeline water outlet, effectively can reduce the thickness of filter core, thus reduce filter tank volume; Mesh can reduce the impact of current to sterilizating area, plays the effect of uniform water distribution; The setting of baffle plate can form effective water seal, ensures the complete submergence of ultraviolet lamp tube.
By arranging sludge reflux, the flocculation agent of the non-complete reaction of part can be carried out secondary reaction, effectively can maintain the comparatively high sludge concentration needed for flocculation, make flco can be easier to produce condensation nucleus, increase flco deadweight, thus be conducive to post precipitation separation, improve removal efficiency, compared with traditional coagulation-depositing technology, can effectively save chemical feeding quantity 10% ~ 30%.
The present embodiment settles out water for research object with East Zhejiang province sewage work two, method of the present invention is carried out to verification experimental verification and implemented to study, the present embodiment " grid flocculation-tube settling-filtering cloth filtering pool " technique and comparative example Sewage Plant advanced treatment process " grid flocculation-tube settling-filtering cloth filtering pool " technique have synchronously been contrasted.Inlet and outlet water water quality is in table 1.
Inlet and outlet water water quality tested by table 1
As can be seen from the above table, the solid suspension substrate concentration (SS) of the embodiment of the present invention and total phosphorus (TP) all low than comparative example.And by sludge reflux, the flocculation agent of the non-complete reaction of part can be carried out secondary reaction, compared with traditional coagulation-depositing technology, save flocculant concentration, chemical feeding quantity saves 25%.
Be it can also be seen that in comparative example, filter cloth has mud to adhere to by upper table, backwashing period is unstable, and the interception of embodiment of the present invention flase floor has obvious impurity particle, filter back washing cycle stability, and effluent quality is secure.
Above-describedly be only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalently replace and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. integrated sewage water advanced treatment apparatus, it is characterized in that: comprise mixing zone, flocculation zone, settling region, filter-cloth filtering district and sterilizating area, wherein side, mixing zone is provided with water inlet pipe, mixing zone is connected with flocculation zone via the first water hole, flocculation zone is connected with settling region via the second water hole, opposite side top, settling region is provided with effluent weir, filter-cloth filtering district is provided with below effluent weir, insertion slot type filter core is set in filter-cloth filtering district, front end, filter-cloth filtering district is provided with flase floor, rear end, filter-cloth filtering district is provided with water leg, mesh is provided with bottom water leg, filter-cloth filtering is provided with sterilizating area below district, sterilizating area inside is provided with vertical baffle, the 3rd water hole is formed between baffle plate and sterilizating area bottom surface, rising pipe is provided with in the middle part of sterilizating area, mud return line is provided with bottom described settling region, mud return line one end is connected with flocculation zone, the other end is provided with shore pipe, described filter-cloth filtering district and described sterilizating area are arranged and adjacent with described settling region up and down.
2. integrated sewage water advanced treatment apparatus as claimed in claim 1, is characterized in that: the grid gap of described flase floor is 1 ~ 2mm.
3. integrated sewage water advanced treatment apparatus as claimed in claim 1, is characterized in that: the aperture of described mesh is 3 ~ 6mm.
4. integrated sewage water advanced treatment apparatus as claimed in claim 1, is characterized in that: described insertion slot type filter core is made up of stainless steel frame and trevira filter cloth.
5. integrated sewage water advanced treatment apparatus as claimed in claim 1, is characterized in that: the thickness of described insertion slot type filter core is 40 ~ 60mm.
6. integrated sewage water advanced treatment apparatus as claimed in claim 4, is characterized in that: the back flushing of described trevira filter cloth adopts online reciprocating self-priming pump washing unit, and back flushing frequency adopts liquid level and time two-parameter control.
7. integrated sewage water advanced treatment apparatus as claimed in claim 1, is characterized in that: arrange sterilizing unit in described sterilizating area.
8. integrated sewage water advanced treatment apparatus as claimed in claim 7, is characterized in that: described sterilizing unit is ultraviolet disinfecting tube.
9. integrated sewage water advanced treatment apparatus as claimed in claim 1, is characterized in that: settling region return sludge ratio: 0.01 ~ 0.04, settling region liquid level load 15 ~ 20m
3/ (m
2h); The filtering velocity of filter-cloth filtering: 6 ~ 12m/h.
10. one kind uses the treatment process of integrated sewage water advanced treatment apparatus as claimed in claim 1, it is characterized in that: sewage enters mixing zone through water inlet pipe, flocculation zone is entered through the first water hole after mixing, settling region is entered through the second water hole after flocculation, muddy water is after settling region precipitate and separate, supernatant liquor enters filter-cloth filtering district by effluent weir overflow after flase floor, after filtration, water outlet enters sterilizating area through water leg by bottom mesh, discharged by rising pipe after the 3rd water hole after sterilization, sludge part is back to flocculation zone through mud return line, part is discharged through shore pipe.
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| CN104724859A (en) * | 2015-04-01 | 2015-06-24 | 河海大学 | Integrated purifying device for drinking water |
| CN105233566A (en) * | 2015-10-22 | 2016-01-13 | 安尼康（福建）环保设备有限公司 | Flocculation concentration device with grille structure bodies and filtrate recycling tank with grille structure bodies |
| CN106145291A (en) * | 2016-08-25 | 2016-11-23 | 江苏环球环境工程集团有限公司 | One way of life wastewater treatment equipment |
| EP3538242A4 (en) * | 2016-11-08 | 2020-06-17 | Pentair Filtration Solutions, LLC | Particle separation system and method |
| CN106745976A (en) * | 2016-12-13 | 2017-05-31 | 江苏龙腾工程设计股份有限公司 | Novel rainwater is regulated and stored processing pond and its processing method of regulating and storing |
| CN107417038B (en) * | 2017-06-16 | 2020-11-13 | 山西华力碧蓝环保技术有限公司 | Deep denitrification turbidity-reducing reactor and application thereof |
| CN107754446A (en) * | 2017-11-01 | 2018-03-06 | 安徽舜禹水务股份有限公司 | A kind of sedimentation basin and filtering ponds compound sewage processing unit |
| CN111499121A (en) * | 2020-05-27 | 2020-08-07 | 中电环保股份有限公司 | CBS- (I) type combined system and process for low-concentration sewage |
| CN114682140B (en) * | 2022-03-28 | 2023-02-10 | 江苏航运职业技术学院 | Domestic sewage treatment process and treatment agent feeding device |
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Effective date of registration: 20200115 Address after: No. 618, Changxing Road, Jiangbei District, Ningbo City, Zhejiang Province Patentee after: Zhongqing ecological environment (Ningbo) Co.,Ltd. Address before: Xikang Road, Gulou District of Nanjing city of Jiangsu Province, No. 1 210098 Co-patentee before: NANJING HEHAI TECHNOLOGY Ltd. Patentee before: HOHAI University |
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