A kind of water-saving defecate and purify system
Technical field
The utility model belongs to feedwater and technical field of waste water processing, the water-saving defecate and purify system that relates to that the coagulation clarification and softening of a kind of surface water that is applicable to various water quality, waste water, Zhong Shui, seawater etc. handles.
Background technology
Coagulation clarification technology is through dosing coagulant and water body thorough mixing; Utilize that coagulating agent produces after the ionization in water with the electrical opposite ion of water-borne glue body particle; Through the electrostatic double layer of charge neutrality effect attenuate colloid surface, reduce zeta-potential, eliminate electrostatic repulsion forces; Make the mutual coagulation of colloidal solid phase take off steady formation macrobead alumen ustum and from water, precipitate removal, thereby reach the purpose of purification of water quality.
At present the coagulation clarification treatment process of widespread usage and equipment are traditional reaction settling basin, mechanical accelerating purifying pool, water clarifier etc. in water treatment field; Its long reaction time, upflow velocity is low, floor space is big, mechanical means routine maintenance complex management, and investment and working cost are high.Conventional coagulation clarification technology body refuse density is lower, and water ratio is high, and the spoil disposal water amount is big, and auxiliary water ratio is high.In addition, the common and clarification device separates of the follow-up filtration processing equipment of conventional coagulation clarification technology water outlet causes technical process longer, and floor space is bigger.
Therefore, reduce the auxiliary water ratio of coagulation clarification purification process, propose water-saving defecate and purify technology, the mixing, the reaction effect that improve coagulation clarification equipment are present urgent problems.
The utility model content
Problems such as the purpose of the utility model is poor in order to solve conventional coagulation clarification water-saving performance, and long reaction time, reaction effect are bad, equipment disperses, floor space is big have proposed a kind of water-saving defecate and purify system.The utility model fills and utilizes fluid mechanics principle; In integral type defecate and purify device, form high efficient mixed district, flocculation reaction district, settling region and filtrating area, the accurate control through active sludge is refluxed has improved the effect of flocculation reaction and the density of body refuse; Discharging residue body refuse water ratio is obviously reduced; Simultaneously the filtrating and the filter backwash draining of body refuse filter-pressing device are reclaimed, greatly reduce the auxiliary water ratio of system, significantly improved water-saving performance.
For achieving the above object; The device of the utility model comprises: comprise former pond, clean water basin and be arranged between former pond and the clean water basin by the multi-stage type line mixer, become the integral type defecate and purify device that aperture fin flocculation reactor, precipitate and separate device, strainer and body refuse reflux are formed; And the sludge disposal system that is connected with integral type defecate and purify device; Its pond, Central Plains, multi-stage type line mixer, change aperture fin flocculation reactor, precipitate and separate device, strainer link to each other with clean water basin successively; The precipitate and separate device also is connected with change aperture fin flocculation reactor through the body refuse reflux; And the multi-stage type line mixer also is connected with one-level medicine system and secondary medicine system in turn with becoming on the fin flocculation reactor of aperture; Described sludge disposal system comprises the filter-pressing device that links to each other with the precipitate and separate device and filtrating retrieving arrangement, the backwash water retrieving arrangement that links to each other with strainer, and the outlet of wherein filtrate retrieving arrangement and backwash water retrieving arrangement links to each other with former pond respectively.
Described multi-stage type line mixer comprises the flocculation agent that links to each other with the one-level medicine system, basifier and the inert seed dosing interface that is arranged on the water inlet pipe, in dosing interface rear end orifice plate and tubulation is installed;
Described change aperture fin flocculation reactor comprises inside and outside flocculation bucket; Interior flocculation bucket lower end is provided with the change aperture fin flocculation reactor inlet that links to each other with the water inlet pipe of multi-stage type line mixer; Outer flocculation bucket top is provided with the coagulant aids dosing interface that is connected with the secondary medicine system; And in interior flocculation bucket, between interior flocculation bucket and the outer flocculation bucket, being filled with respectively barrel change aperture fin Flocculent plate assembly and outside barrel change aperture fin Flocculent plate assembly; Inside and outside flocculation bucket is connected with the precipitate and separate device through support, and described precipitate and separate device comprises swash plate or the inclined tube that is arranged on top, be arranged on the deposition bucket of bottom and be arranged on bottom mud discharging mouth; Strainer is arranged on the top of precipitate and separate device; Become with intercept net group by porous plate, filtration unit, lightweight filtering layer successively from bottom to top; Lightweight filtering layer below is provided with the perforation gas distribution pipe that links to each other with the air bump rinse operation roots blower; Arranged outside in the online portion of interception has water leg and the water outlet that links to each other with clean water basin, and precipitate and separate device, strainer also link to each other with filter-pressing device, backwash water retrieving arrangement through mud discharging mouth respectively; Described body refuse retrieving arrangement links to each other with change aperture fin flocculation reactor inlet by the road, and this pipeline is provided with active sludge recycle pump and body refuse density/under meter.
Described precipitate and separate device bottom deposition bucket upper strata is provided with the active sludge collection tube, links to each other with the active sludge recycle pump, and the active sludge recycle pump adopts variable frequency pump, and the spoil disposal valve is installed on the mud discharging mouth.
Described multi-stage type line mixer adopts tubulation and orifice plate built-up type, and number of combinations is adjustable, and the caliber of tubulation and the aperture of orifice plate are outwards increased by the center on xsect gradually.
Described inside and outside bucket becomes aperture fin Flocculent plate assembly and adopts non-equidistance perforate, and perforate is circular hole or square hole, is increased gradually in the aperture laterally by the center; Become aperture fin Flocculent plate assembly and all be furnished with the flow-disturbing fin up and down, the flow-disturbing fin is uniformly distributed with on circumference, and the fin width is 100~300mm.
The inclination angle of described swash plate or inclined tube is 60 °, and the swash plate spacing is 20~40mm, and the inclined tube inscribed circle directly is 30~60mm.
Described lightweight filtering layer is PS or Vestolen PP 7052 Archon, and its particle diameter is 1.5~2.5mm; The interception net adopts stainless steel filtering net or the orifice plate of aperture less than 1.5mm.
Described filter-pressing device adopts plate and frame(type)filter press or centrifugal drier.
Described flocculation agent is PAC, PFS or FeCl
3, basifier is Ca (OH)
2Or NaOH, coagulant aids is PAM, inert seed is CaCO
3Or CaSO
4
The water-saving defecate and purify of the utility model system compares with legacy system has good water-saving performance, refluxes, filter-pressing device filtrating and filter backwash water are reclaimed through concentrating body refuse, greatly reduces the auxiliary water ratio of system; The auxiliary water ratio of the utility model is reduced to below 1%, and it is about 10%~30% that chemical consumption reduces, and the flocculation reaction time reduces about 60%~70%, makes total residence time reduce more than 50%; With traditional coagulation clarification apparatus in comparison, its mixing, reaction effect are good, and formed alumina blossom particles is big, density is high, helps rapid precipitation, thereby reduce the hydraulic detention time of high-efficiency water-saving defecate and purify device, reduce floor space; And the inner no rotary machine equipment of the utility model greatly reduces the daily operation management maintenance cost, has reduced labour cost; Adopt accurately control active sludge backflow and crystal seed to add, can improve coagulation and chemical precipitation reaction effect greatly, improve effluent quality.
Description of drawings
Fig. 1 is the structured flowchart of the utility model;
Fig. 2 is the structural representation of the utility model integral type defecate and purify device;
Fig. 3 is the structural representation of the utility model multi-stage type line mixer orifice plate 2;
Fig. 4 is the structural representation of the utility model multi-stage type line mixer tubulation 3;
Fig. 5 is the structural representation that bucket becomes aperture fin Flocculent plate assembly 9 in the utility model;
Fig. 6 is the structural representation that the outer bucket of the utility model becomes aperture fin Flocculent plate assembly 10.
The former pond of a-among the figure, b-multi-stage type line mixer, c-becomes aperture fin flocculation reactor, d-precipitate and separate device; The e-strainer, f-clean water basin, g-filter-pressing device, h-one-level medicine system; I-secondary medicine system, j-body refuse reflux, the k-retrieving arrangement of filtrating; L-backwash water retrieving arrangement, M-integral type defecate and purify device, W-sludge disposal system; The 1-water inlet pipe, 2-orifice plate, 3-tubulation, 4-flocculation agent, basifier and inert seed dosing interface, 5-coagulant aids dosing interface; 6-becomes aperture fin flocculation reactor inlet, flocculation bucket in the 7-, the 8-bucket that flocculates outward, and bucket becomes aperture fin Flocculent plate assembly in the 9-, and the outer bucket of 10-becomes aperture fin Flocculent plate assembly; 11-swash plate or inclined tube, the 12-porous plate, the 13-filter, 14-lightweight filtering layer, 15-tackles net; The 16-water leg, 17-water outlet, 18-air bump rinse operation roots blower interface, 19-deposition bucket, 20-mud discharging mouth; 21-active sludge recycle pump, 22-body refuse density/under meter, 23-aperture, 24-caliber, 25-flow-disturbing fin.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further explanation.
Referring to Fig. 1; The utility model comprise former pond a, clean water basin f and be arranged between former pond a and the clean water basin f by multi-stage type line mixer b, become the integral type defecate and purify device M that aperture fin flocculation reactor c, precipitate and separate device d, strainer e and body refuse reflux j form; And the W of sludge disposal system that is connected with integral type defecate and purify device M; Its pond, Central Plains a, multi-stage type line mixer b, change aperture fin flocculation reactor c, precipitate and separate device d, strainer e link to each other with clean water basin f successively; Precipitate and separate device d also is connected with change aperture fin flocculation reactor c through body refuse reflux j; And multi-stage type line mixer b also is connected with one-level medicine system h and secondary medicine system i in turn with becoming on the fin flocculation reactor c of aperture; The described sludge disposal W of system comprises filter-pressing device g and the filtrating retrieving arrangement k of the employing plate and frame(type)filter press that links to each other with precipitate and separate device d or centrifugal drier, the backwash water retrieving arrangement l that links to each other with strainer e, and the outlet of wherein filtrate retrieving arrangement k and backwash water retrieving arrangement l links to each other with former pond a respectively.
Referring to Fig. 2, the multi-stage type line mixer b of the utility model comprises the flocculation agent that links to each other with one-level medicine system h, basifier and the inert seed dosing interface 4 that is arranged on the water inlet pipe 1, and orifice plate 2 and tubulation 3 are installed in dosing interface 4 rear ends;
Described change aperture fin flocculation reactor c comprises inside and outside flocculation bucket 7,8; Interior flocculation bucket 7 lower ends are provided with the change aperture fin flocculation reactor inlet 6 that links to each other with the water inlet pipe 1 of multi-stage type line mixer b; Outer flocculation bucket 8 tops are provided with the coagulant aids dosing interface 5 that is connected with secondary medicine system i; And in interior flocculation bucket 7, between interior flocculation bucket 7 and the outer flocculation bucket 8, being filled with respectively barrel change aperture fin Flocculent plate assembly 9 and outside barrel change aperture fin Flocculent plate assembly 10; Inside and outside flocculation bucket 7,8 is connected with precipitate and separate device d through support; Described precipitate and separate device d comprises swash plate or the inclined tube 11 that is arranged on top, be arranged on the deposition bucket 19 of bottom and be arranged on the bottom mud discharging mouth 20; The inclination angle of swash plate or inclined tube 11 is 60 °, and the swash plate spacing is 20~40mm, and the inclined tube inscribed circle directly is 30~60mm.Strainer e is arranged on the top of precipitate and separate device d, is made up of porous plate 12, filtration unit 13, lightweight filtering layer 14 and interception net 15 successively from bottom to top, and lightweight filtering layer 14 is PS or Vestolen PP 7052 Archon, and its particle diameter is 1.5~2.5mm; Interception net 15 employing apertures are less than stainless steel filtering net or the orifice plate of 1.5mm; Lightweight filtering layer below is provided with the perforation gas distribution pipe that links to each other with air bump rinse operation roots blower 18; Arranged outside on interception net 15 tops has water leg 16 and the water outlet 17 that links to each other with clean water basin f, and precipitate and separate device d, strainer e also link to each other with filter-pressing device g, backwash water retrieving arrangement l through mud discharging mouth 20 respectively; Described body refuse retrieving arrangement j links to each other with change aperture fin flocculation reactor inlet 6 by the road, and this pipeline is provided with active sludge recycle pump 21 and body refuse density/under meter 22.Wherein precipitate and separate device d bottom deposition bucket 19 upper stratas are provided with the active sludge collection tube, link to each other with active sludge recycle pump 21, and active sludge recycle pump 21 adopts variable frequency pump, and the spoil disposal valve is installed on the mud discharging mouth 20.Described flocculation agent is PAC, PFS or FeCl
3, basifier is Ca (OH)
2Or NaOH, coagulant aids is PAM, inert seed is CaCO
3Or CaSO
4
Referring to Fig. 3,4, the utility model multi-stage type line mixer b adopts tubulation 3 and orifice plate 2 built-up types, and number of combinations is adjustable, and the aperture 23 of orifice plate 2, the caliber 24 of tubulation 3 are outwards increased by the center on xsect gradually.
Referring to Fig. 5,6, inside and outside bucket becomes aperture fin Flocculent plate assembly and adopts non-equidistance perforate, and perforate is circular hole or square hole, is increased gradually in the aperture laterally by the center; Become aperture fin Flocculent plate assembly and all be furnished with flow-disturbing fin 25 up and down, flow-disturbing fin 25 is uniformly distributed with on circumference, and the fin width is 100~300mm.
The water-saving defecate and purify method of the utility model may further comprise the steps: pending former water promotes through pump and gets into multi-stage type line mixer b among the former pond a; In multi-stage type line mixer b, utilize one-level medicine system h to add behind the chemical agent thorough mixing in multi-stage type line mixer b; Eddy flow gets into change aperture fin flocculation reactor c and carries out flocculation reaction; According to different quality treatment process needs; Add chemical agent through secondary medicine system i becoming flocculation reactor c place, aperture, get into precipitate and separate device d again and carry out solid-liquid separation, body refuse concentrates, getting into strainer e at last, to filter back entering clean water basin f for use;
The partially concd active sludge of precipitate and separate device d is back to through body refuse reflux j and becomes aperture fin flocculation reactor c; The residue body refuse is through filter-pressing device g press filtration; Filtrating is back to former pond a through filtrating retrieving arrangement k; Strainer e backwash draining is back to former pond a through backwash water retrieving arrangement l, can significantly reduce the outer discharge rate of integral type defecate and purify device (M), has good water-saving performance.
Below be the embodiment of the utility model:
Certain contaminated river, 24.5~36.2 ℃ of water temperatures, pH is 7.4~7.8, and turbidity is 12.1~42.6NTU, and suspended substance is 567.61~746.04mg/L, COD
CrBe 22.1~31.3mg/L, the water yield is 25~30m
3/ h, selecting Poly aluminum Chloride (PAC) for use is flocculation agent, SEPIGEL 305 is a coagulant aids.
Multi-stage type line mixer b forms caliber DN80 by two groups of orifice plates 2 and two groups of tubulations 3.Highly effective integration water purifier equipment height overall 6480mm, diameter 2660mm.Interior flocculation bucket 7 diameter 770mm, outer flocculation barrel 8 diameter 1630mm.Lightweight filtering layer 14 height 300mm, filtration unit 13 wavelength width of a slit 1.2mm, interception net 15 aperture 1.2mm.Active sludge recycle pump 21 adopts VFC, flow setting range 1~4.5m
3/ h.
Pending former water is promoted to inlet channel 1 by former pond a through pump and gets into change aperture fin flocculation reactor inlet 6 through multi-stage type line mixer b; Multi-stage type line mixer b is provided with flocculation agent dosing interface 4; Add Poly aluminum Chloride (PAC) at this; The HS micro-vortex at high proportion in a large number that utilizes that multi-stage type line mixer b produces makes medicament be distributed to the thin portion of water body fast, helps carrying out fast of elimination of colloid stability reaction.In the space that interior flocculation bucket 7 and outer flocculation bucket 8 constitute, filled interior bucket and become aperture fin Flocculent plate assembly 9 and outer bucket change aperture fin Flocculent plate assembly 10, current produce small vortex through assembly to be impelled and flocculates and fully the carrying out of aggregation.Constitute depositing separation area between the bucket wall of flocculation bucket 8 and precipitate and separate device d outside, filled inclined tube 11 therebetween, improved the precipitate and separate efficient of the alumen ustum of flocculation reaction generation.Strainer e has been arranged on the top of precipitate and separate device d, comprises porous plate 12, filter 13, lightweight filtering layer 14, and interception net 15, current are filtered by lightweight filtering layer 14 through filtering head 13 through behind the inclined tube 11, are collected by water leg 16 again, deliver to clean water basin f by water outlet 17.The arranged beneath deposition bucket 19 of precipitate and separate device d, the bottom is provided with mud discharging mouth 20, and the residue body refuse drains into the W of sludge disposal system by mud discharging mouth 20.Lightweight filtering layer 14 is through the more body refuse of accumulation behind the long-play; Can carry out backwash; Carry out air bump rinse operation through air bump rinse operation roots blower interface 18 to 14 air blast of lightweight filtering layer, then through mud discharging mouth 20 quick blowdowns, the body refuse that utilizes the clear water on lightweight filtering layer 14 tops to wash to come is towards to inclined tube 11 districts; Remove through deposition, continue to put into operation through the lightweight filtering layer 14 after the backwash.
On deposition bucket 19 tops the active sludge collection tube is set; Link to each other with active sludge recycle pump 21; By active sludge recycle pump 21 active sludge is delivered to change aperture fin flocculation reactor inlet 6; In active sludge recycle pump 21 outlet body refuse density/under meter 22 is set, accurate Control Circulation body refuse amount is for flocculation process provides the reaction core.
The residue body refuse drains into the W of sludge disposal system, handles through filter-pressing device g, and its filtrating is recycled to former pond a through filtrating retrieving arrangement k, and the backwash draining of strainer e is recycled to former pond a through backwash water retrieving arrangement l, thereby has significantly improved the water-saving performance of system.
Implementation result: the defecate and purify auxiliary water ratio of the utility model reduces greatly, is about 0.8%.Integrated high-efficiency defecate and purify device total residence time 38min shortens more than 50% than conventional equipment; Delivery turbidity 2.23~3.09NTU, clearance about 90%; Organic content is (with COD
CrExpression) clearance is about 20%; Flocculant dosage 20mg/L, more conventional flocculant dosage reduces 30%.