Background technology
Tobacco sheets by paper making method is the new and high technology of a tobacco waste regeneration in the tobacco industry, because the production of method has followed paper technology and chemical industry extractive technique at some process procedures, thereby inevitably with the characteristics of high water consumption, high waste water, this waste water contains a large amount of fibers, have the tobacco Colority of Sewage Water high, biodegradability is poor simultaneously, contains characteristics such as the disadvantageous nicotine of microorganism growth, belong to the difficult organic sewage of high density, and the characteristics of processing tobacco enterprise wastewater:
(1) waste water complicated component, intractability is larger.The waste water of tobacco processing enterprise is mainly derived from waste water and two parts of on-site sanitary wastewater in the production of cigarettes process.Wherein, contain the materials such as a large amount of fine suspension, xylogen, nicotine, glucide, a small amount of colloid, aromatics in factory effluent.Therefore, the characteristics such as factory effluent has Pollutant levels and colourity is high, complicated component, therefore adopt traditional technology only can realize the qualified discharge of wastewater treatment, the more difficult regeneration water quality standard that reaches.
(2) year water consumption is larger, and the waste water generation is also relatively large.
(3) cigar mills often will produce the cigarette brand more than three kinds, the essence and flavoring agent of the tobacco varieties of every kind of brand cigarette, production process and interpolation is different, this has just caused the variation water quality of tobacco wastewater very large, easily Sewage treatment systems is impacted to load.
Current, the method of processing tobacco wastewater in traditional technology has activated sludge process, Biological Contact Oxidation Process, simple and easy biochemical processing process and membrane bioreactor etc., activated sludge process wherein, can be adapted to wastewater treatment of different nature, but its operation stability is poor, sludge bulking and loss easily occur, and separating effect is undesirable; The Biological Contact Oxidation Process capacity of resisting impact load is high, and the microbial film come off at that time can cause the suspended sediment concentration in water outlet high; And simple and easy biochemical processing process, although the low power consumption of cost is low, it is up to standard that the physical and chemical indexs such as water outlet COD, BOD can not be guaranteed, can only be as the excess processes in early stage of processing, and can not be as the reuse of low-quality miscellaneous water; The membrane bioreactor effluent quality is excellent, but the high freight charges of energy consumption are high.。
The prior art shortcoming: energy consumption is high, capacity of resisting impact load is weak, effluent quality is poor, poor stability or cost high.
The utility model content
For solving above technical problem, the purpose of this utility model is to provide a kind of capacity of resisting impact load strong, and effluent quality is excellent, without the sludge bulking problem, stability is high, and floor space is little, and reuse is purified waste water and is carried out back flushing, can save the tobacco wastewater treatment system of a large amount of back-flushings.
The utility model purpose is achieved in that a kind of tobacco wastewater treatment system, and its key is: comprise grid pump well, equalizing tank, anoxic baffled reactor, flocculation sedimentation tank, BAF, intermediate pool, aeration and biological carbon tower, strainer and the clean water basin of connecting successively by pipeline.
Adopt said structure, the large particle diameter suspended substance of the bright outstanding person of grid pump well and floating matter, the preaeration equalizing tank is regulated waste water quality, the water yield, anoxic baffled reactor uses shutter configuration, form 3 independently reaction chambers in reactor, realized phase-splitting multistage anoxic, ability with shock absorbing load, larger molecular organics in water can be changed into to micromolecular organism, particularly to LAS, the substances such as microbiotic play good Degradation, reduced the impact load of waste water, flocculation sedimentation tank can be removed most suspended substances and inorganic particulate matter etc., again reduced the impact load of waste water, also for follow-up BAF, create good water inlet environment, BAF, removed most of pollution substance in water, strainer is removed the fine suspended substance in water, so system to tobacco wastewater by stepwise disposal, impact load reduces step by step, the steady running of system and the excellence of effluent quality have been guaranteed.
Above-mentioned equalizing tank bottom is provided with aeration tube and lift pump, and described aeration tube one end is communicated with aeration blower by pipeline; The water outlet of described lift pump is communicated with the water inlet of described anoxic baffled reactor.
Adopt said structure, preaeration is set in equalizing tank, can mix water quality, reduce the impact load of subsequent disposal, prevent sludge settling in equalizing tank, reduce and draw clearly, can also pass through aeration, inorganic reduction material in oxidation and in waste water, remove the COD that the inorganic substance of reductibility in waste water form, and can also prevent anaerobic waste water and produce peculiar smell.
Above-mentioned flocculation sedimentation tank comprises flocculation tank and tube settler, the water inlet of described flocculation tank is communicated with the water outlet of described anoxic baffled reactor by pipeline, the water outlet of this flocculation tank is communicated with the water inlet of described tube settler, and the water outlet of this tube settler is communicated with the water inlet of BAF.
Adopt said structure, drop into flocculation agent in flocculation tank, most suspended substances and inorganic particulate matter reaction precipitation in flocculation agent and waste water will precipitate and separate with waste water and remove precipitation in tube settler.
Above-mentioned flocculation tank is communicated with the PAC dispensing kit, and the medicine outlet of described PAC dispensing kit is communicated with described flocculation tank by pipeline.
Adopt said structure, in flocculation tank, by dispensing kit, drop into the PAC(polymerize aluminum chloride) water purification agent, easily and effectively.
Above-mentioned BAF comprises one-level BAF and the secondary BAF of connecting with this one-level BAF, the water inlet of described one-level BAF is communicated with the water outlet of described tube settler by pipeline, described secondary BAF is communicated with intermediate pool by pipeline, the bottom of described one-level BAF and secondary BAF is equipped with the filter tank aeration tube, and this filter tank aeration tube is communicated with aeration blower and recoil gas blower respectively by pipeline.
Adopt said structure, BAF is set to firsts and seconds, can remove fully the pollutent in waste water, has improved the high characteristics of its effluent quality.
Above-mentioned aeration and biological carbon tower is provided with water inlet, water outlet, the aeration mouth of pipe, the back flushing air mouth of pipe, back-flushing entrance and back-flushing outlet, and the water inlet of this aeration and biological carbon tower and water outlet are communicated with described intermediate pool and strainer respectively; The aeration mouth of pipe of described aeration and biological carbon tower is communicated with described aeration blower by pipeline, and the back flushing air mouth of pipe of this aeration and biological carbon tower is communicated with the recoil gas blower by pipeline; The back-flushing entrance of described aeration and biological carbon tower is communicated with described clean water basin by pipeline, is provided with centrifugal recoil water pump on this pipeline, and the back-flushing outlet of this aeration and biological carbon tower is communicated with described grid pump well by pipeline.
Adopt said structure, using the water of clean water basin as back-flushing, and back-flushing introduced in the grid pump well, recycle back-flushing, greatly reduce the consumption of back-flushing.
Above-mentioned strainer is provided with back-flushing entrance and back-flushing outlet, and the back-flushing entrance of this strainer and back-flushing outlet are communicated with described centrifugal recoil water pump and grid pump well by pipeline respectively.
Adopt said structure, using the water of clean water basin as back-flushing, and back-flushing introduced in the grid pump well, recycle back-flushing, greatly reduce the consumption of back-flushing.
Above-mentioned tobacco wastewater treatment system, also be provided with sludge sump, the mud entrance of described sludge sump is communicated with described anoxic baffled reactor, flocculation sedimentation tank and intermediate pool by pipeline, the sludge outlet of described sludge sump also is communicated with belt filter press, the sludge outlet of this belt filter press is provided with conveyor, and by conveyor, mud is transported in the sludge bin storage tank.
Adopt said structure, sludge sump stores and concentrates the mud of anoxic baffled reactor, flocculation sedimentation tank and intermediate pool, and belt filter press carries out processed to the mud after concentrating and nursing one's health, moisture percentage in sewage sludge after dehydration is lower than 70%, and the mud after dehydration stores and transport outward processing by storage tank.
Above-mentioned belt filter press is provided with the PAM dispensing kit, and the medicine outlet of described PAM dispensing kit is communicated with described belt filter press by pipeline, and described belt filter press bottom is provided with the press filtration water out, and this press filtration water out is communicated with described grid pump well by pipeline.
Beneficial effect:
The utility model is a kind of tobacco wastewater treatment system, and reduction impact load that can be gradually has an effluent quality excellent, and without the sludge bulking problem, stability is high, and floor space is little, and reuse purifies waste water and carry out back flushing, can save the characteristics such as a large amount of back-flushings.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail:
Embodiment: as depicted in figs. 1 and 2: a kind of tobacco wastewater treatment system is comprised of grid pump well 1, equalizing tank 2, anoxic baffled reactor 3, flocculation sedimentation tank 4, BAF 5, intermediate pool 6, aeration and biological carbon tower 7, strainer 8, clean water basin 9 and sludge sump 13.
Described grid pump well 1 is communicated with the water inlet of described equalizing tank 2 by pipeline, and described equalizing tank 2 bottoms are provided with aeration tube 2a and lift pump 2b, and described aeration tube 2a mono-end is communicated with aeration blower 10 by pipeline; The water outlet of described lift pump 2b is communicated with the water inlet of described anoxic baffled reactor 3, and the water outlet of described anoxic baffled reactor 3 is communicated with the water inlet of described flocculation sedimentation tank.
Described flocculation sedimentation tank 4 is comprised of flocculation tank 4a and tube settler 4b, described flocculation tank 4a is communicated with PAC dispensing kit 4a1 outward, the medicine outlet of described PAC dispensing kit 4a1 is communicated with described flocculation tank 4a by pipeline, the water inlet of described flocculation tank 4a is communicated with the water outlet of described anoxic baffled reactor 3 by pipeline, the water outlet of this flocculation tank 4a is communicated with the water inlet of described tube settler 4b, and the water outlet of this tube settler 4b is communicated with the water inlet of BAF 5;
Described BAF 5 comprises one-level BAF 5a and the secondary BAF 5b connected with this one-level BAF 5a, the water inlet of described one-level BAF 5a is communicated with the water outlet of described tube settler 4b by pipeline, described secondary BAF 5b is communicated with intermediate pool 6 by pipeline, the bottom of described one-level BAF 5a and secondary BAF 5b is equipped with filter tank aeration tube 5c, and this filter tank aeration tube 5c is communicated with aeration blower 10 and recoil gas blower 11 respectively by pipeline.
Described aeration and biological carbon tower 7 is provided with water inlet, water outlet, the aeration mouth of pipe, the back flushing air mouth of pipe, back-flushing entrance and back-flushing outlet, and the water inlet of this aeration and biological carbon tower 7 and water outlet are communicated with described intermediate pool 6 and strainer 8 respectively; The aeration mouth of pipe of described aeration and biological carbon tower 7 is communicated with described aeration blower 10 by pipeline, and the back flushing air mouth of pipe of this aeration and biological carbon tower 7 is communicated with recoil gas blower 11 by pipeline; The back-flushing entrance of described aeration and biological carbon tower 7 is communicated with described clean water basin 9 by pipeline, is provided with centrifugal recoil water pump 12 on this pipeline, and the back-flushing outlet of this aeration and biological carbon tower 7 is communicated with described grid pump well 1 by pipeline.
Described strainer 8 is provided with back-flushing entrance and back-flushing outlet, and the back-flushing entrance of this strainer 8 and back-flushing outlet are communicated with described centrifugal recoil water pump 12 and grid pump well 1 by pipeline respectively.
The mud entrance of described sludge sump 13 is by pipeline and described anoxic baffled reactor 3, the sludge outlet of flocculation sedimentation tank 4 and intermediate pool 6 is communicated with, the sludge outlet of this sludge sump 13 also is communicated with belt filter press 14, the sludge outlet of this belt filter press 14 is provided with conveyor 15, and by conveyor 15, mud is transported in sludge bin storage tank 16, this belt filter press 14 is provided with PAM dispensing kit 14a, the medicine outlet of this PAM dispensing kit 14a is communicated with described belt filter press 14 by pipeline, described belt filter press 14 bottoms are provided with the press filtration water out, this press filtration water out is communicated with described grid pump well 1 by pipeline.
A kind of principle of work of tobacco wastewater treatment system is:
Wastewater streams enters the filtration that grid pump well 1 carries out large particle diameter suspended substance and floating matter, then sewage is pumped into to equalizing tank 2 and carries out preaeration, mixes water quality, removes the inorganic reduction material, reduces the generation of peculiar smell; Sewage enters in anoxic baffled reactor 3 the acidication reaction occurs, and the macromole spot is degraded to small-molecule substance; Enter the processing formation precipitation of the sewage of flocculation sedimentation tank 4 through the PAC water purification agent, remove most suspended substances and inorganic particulate matter in water; Processing through TSA biological filter 5, hold back the suspended substance in sewage, guarantees that the microbial film come off can not drift out with water, has removed most of pollutent in sewage; Sewage enters aeration and biological carbon tower 7 through intermediate pool 6, and aeration and biological carbon tower complement filter device 8 is removed fine suspended substance in water, and sewage flows into clean water basin 9, then qualified discharge; And the mud that anoxic baffled reactor, flocculation sedimentation tank and intermediate pool 6 produce enters sludge sump 13 and is processed rear outward transport.