CN106698822A - Tea polyphenol production and processing wastewater treatment device and method - Google Patents

Tea polyphenol production and processing wastewater treatment device and method Download PDF

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Publication number
CN106698822A
CN106698822A CN201611196304.5A CN201611196304A CN106698822A CN 106698822 A CN106698822 A CN 106698822A CN 201611196304 A CN201611196304 A CN 201611196304A CN 106698822 A CN106698822 A CN 106698822A
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tank
waste water
sludge
water
pond
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陶乃峰
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SHANGHAI FUDAN WATER ENGINEERING TECHNOLOGY Co Ltd
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SHANGHAI FUDAN WATER ENGINEERING TECHNOLOGY Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water, or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/24—Treatment of water, waste water, or sewage by flotation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F2001/007—Processes including a sedimentation step
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/34—Organic compounds containing oxygen
    • C02F2101/345—Phenols
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/005—Processes using a programmable logic controller [PLC]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/04—Flow arrangements
    • C02F2301/046—Recirculation with an external loop
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used

Abstract

The invention discloses a tea polyphenol production and processing wastewater treatment device and method. The device comprises basic facilities, wherein the basic facilities comprise a screen well, a water collection tank, a reaction tank, a primary sedimentation tank, an air floatation tank, an adjusting tank, a hydrolysis tank, a contact oxidation tank, a secondary sedimentation tank, an emission well and a sludge thickening tank that are combined to form a collection system, a physical-chemical treatment system, a biochemical treatment system, a dosing system, an oxygen supply system, a sludge treatment system and an electric control system; the collection system comprises the screen well and the water collection tank; the physical-chemical treatment system comprises the reaction tank, the primary sedimentation tank and the air floatation tank; the biochemical treatment system comprises the hydrolysis tank, the contact oxidation tank and the secondary sedimentation tank; the dosing system comprises a dosing pump and a dosing barrel. According to the device and the method disclosed by the invention, various systems work cooperatively, so that tea polyphenol production and processing wastewater can be fully and effectively reacted and treated in the treatment systems; in addition, the device and the method are simple in process, simple and convenient in operation, thorough in treatment, economical in energy and low in cost.

Description

A kind of Tea Polyphenols produces and processes wastewater treatment equipment and method
Technical field
The present invention relates to sewage treatment equipment technical field, specifically a kind of Tea Polyphenols production and processing wastewater treatment equipment and Method.
Background technology
Tea Polyphenols production and processing waste water mainly includes remaining mother liquor and flushing water after extracting, by the production technology of Tea Polyphenols Understand, the composition of waste water is essentially identical with the water soluble ingredient in tealeaves, wherein organic acid, sugar, amino acid and pectin substance Good biodegradability, the biodegradability of alkaloid is (but its content is less) also to be studied.
Tea Polyphenols in waste water can be with metal ion (such as Al under certain pH value3+、Ca2+Deng) reaction generation indissoluble Compound, and some transition metal ions can occur chromogenic reaction, such as add containing Fe2+、Fe3+Coagulant when can generate coloured network Compound, the color of water can become blackish green by yellow, and have acid smell, and reaction equation is as follows：6R-OH+FeCl3→H3[Fe (OR)6]+3HCl, to avoid the generation of colourity, aluminium polychloride (PAC) and Al is respectively adopted2(SO4)3It is compared experiment, one Aspect both materials can generate insoluble compound with Tea Polyphenols, on the other hand be gone in water removal in colloid and micro- by flocculation The organic and inorganic substances of small suspended state, reduce the load of biochemical treatment.Due to waste water slant acidity, Ca (OH) is added2One The pH value of the adjustable waste water of aspect, another aspect Ca2+Also with Tea Polyphenols reaction generation insoluble compound, tea in water is further reduced The content of polyphenol, be subsequent biochemical treatment be smoothed out provide condition.Tea Polyphenols is easy to oxidation and becomes in the basic conditions Color, adds PAC and Al2(SO4)3There is preferable removal effect to Tea Polyphenols.The best feed rate of PAC is 250mg/L, and COD is gone Except rate is 29% or so, the clearance to Tea Polyphenols is 85% or so.Al2(SO4)3Best feed rate be 500mg/L, to COD's Clearance is 35% or so, and the clearance to Tea Polyphenols is 86% or so.In view of Al2(SO4)3Throwing amount can cause for 500mg/L Sulphates content is too high in water, influences the effect of follow-up anaerobic biochemical treatment, so suggestion is mixed in Practical Project using PAC Solidifying agent, but because the reaction is reversible, it is impossible to the Tea Polyphenols in waste water is removed completely, and being found in experiment can if using secondary precipitation Tea Polyphenols is removed completely, the supernatant Fe after precipitation2+Chromogenic reaction is occurred without during detection.The BOD of supernatants after precipitation5/COD =0.57 (being more or less the same with water inlet), but the biodegradability of waste water will be substantially improved because of the removal of Tea Polyphenols.
The bacteriostasis of Tea Polyphenols are proportional with its concentration and relevant with stereochemical structure.But the bacteriostasis of Tea Polyphenols has Very strong selectivity, can suppress the growth of pernicious bacteria, but then have maintenance colony balance to normal floras such as mould, saccharomycete Effect.Thus, although relevant information report catechin has inhibitory action to bacterium, also sludge can under anaerobic tamed and dociled Change.Because Tea Polyphenols has very strong inhibitory action to bacterium (including anaerobism, aerobic and facultative bacteria), and Tea Polyphenols is in waste water Content highest, thus this technique should focus on to have investigated the change to the minimizing technology and wastewater biodegradability of Tea Polyphenols.Can be with Add PAC and Ca (OH)2It is a kind of economically viable method that pretreatment is carried out to tea ployphenols wastewater, and the clearance of COD is also reachable To 29%, the clearance of Tea Polyphenols can reach 85%, not only improve the clearance of Tea Polyphenols, and improve the biochemical of waste water Property, while also improving the pH value of waste water.
Technics comparing
1 absorption method
Absorption method is to produce chemistry work and adsorbed material between by adsorbent (such as activated carbon, sulfonated coal and resin) With formation chemical bond causes absorption and removes polluter.Waste water is produced and processed with the pretreated Tea Polyphenols of charcoal absorption, First water process special-purpose activated charcoal is soaked with the dilute sulfuric acid that volume fraction is 5%~10%, strengthens the adsorption capacity on its surface, then Soaked with the liquor potassic permanganate that mass fraction is 2%~5%, strengthen the re-oxidation ability on its surface, enhancement activated carbon absorption 4.5~5.5m of tower height, filtering velocity 10m/h, activated carbon handling are using hydraulic conveyor and unload charcoal device automatically, and water outlet can after treatment Reach the standard of cooling tower quality of reused water.
2 Coagulation Methods
Contain many colloidal substances in Tea Polyphenols production and processing waste water, they are mutually exclusive because carrying certain electric charge, surely Surely it is dispersed in waste water.After the coagulant with opposite charges is added, the electric charge in waste water on colloidal substance is neutralized hair Raw cohesion, then by the bridging action of macromolecular flocculation aid, big floc sedimentation is gathered into by small micelle, can be removed by external force.With Aluminum sulfate be coagulant, polyacrylamide be flocculation aid process synthetic rubber waste water, optimal coagulant consumption, pH, temperature and Under stirring condition, COD clearances are about 37%.
3 mixed condensed gas flotation processes
At present, most domestic Tea Polyphenols manufacturing and processing enterprise uses mixed condensed gas flotation process process for producing waste water.This method is first Dosing coagulant and flocculation aid toward waste water, carry out coagulation and help solidifying intensive treatment, then are squeezed into air floatation machine with pump, by water Emitter will inject dissolved air release and forms micro-bubble dissolved with the recirculation water of compressed air, and the suspended particulate in waste water is attached to gas Scraped with slag-scraper after being emerged on bubble and discharged into ash pit.Synthetic rubber waste water is processed with two-stage Bubble-floating Method, wherein One-level puts device using air pocket collection, and the floccule body of larger particles is floated on the surface of the water, and two grades put device using micro-bubble collection, will be small Particle flocculation body is floated on the surface of the water, and water outlet COD and SS clearance is respectively 40%~45%, 95%~98%.
4 bioanalysises
Bioanalysis is to utilize microorganism, mainly the metabolism of bacterium, solubility in oxidation, decomposition, absorption waste water The insoluble organic matter of organic matter and part, and it is converted into harmless stable material so that waste water is obtained only.Bioanalysis master To include hydrolysis acidification method, activated sludge process, oxidation ditch process and biological contact oxidation process.
5 hydrolysis acidification methods
Hydrolysis acidification method be it is a kind of between the aerobic method and anaerobism between, mainly for the treatment of containing hardly degraded organic substance, Biodegradability industrial wastewater not high.It is using during organic matter anaerobic digestion the characteristics of the acid fermentation stage, by some The larger molecular organicses of difficult degradation are converted into the small organic molecule being easily degraded by microorganisms, so as to improve the biochemical of waste water Property.Such as fourth and butadiene-styrene rubber composite waste are made in order with hydrolysis acidification, when inlet COD loading 0.55kg/m3d and residence time During 6.7h, water outlet BOD/COD values bring up to 0.56 and do not detect styrene by the 0.44 of before processing, it is ensured that follow-up aerobic process Treatment effect.
6 activated sludge processes
Activated sludge process is that have very strong absorption and oxidation Decomposition organic matter using the various microorganisms in activated sludge Ability processes a kind of method of organic wastewater.The medium-sized test that Tea Polyphenols produces and processes waste water is processed with traditional activated sludge process Show, influent COD average quality concentration is 801mg/L, after being processed through drum exposure, secondary clarifier effluent COD average removal rates are 59.2%.
7 oxidation ditch process
Oxidation ditch is also called " ring aeration tank ", " aerating system of endless ", and its aeration tank is dirty in the irrigation canals and ditches type closed The mixed liquor of water and activated sludge is constantly circulated wherein.As a kind of Activated Sludge Process of innovation, oxidation ditch Method is not required to set preliminary sedimentation tank and sludge digestion tank, but in terms of BOD is removed than traditional activated sludge process effect more preferably, runs also more Plus it is reliable and stable.Processed with oxidation ditch process after Tea Polyphenols production and processing waste water is mixed by a certain percentage with sanitary wastewater, BOD Clearance is up to 69%~93%.
8 biological contact oxidation process
Biological contact oxidation process is a kind of widely used method of current industrial wastewater biological treatment.Because its load is high, have Machine thing removal effect is good and turns into the follow-up aerobic treatment process of hydrolysis acidification technique.Tea Polyphenols is processed with biological contact oxidation process Production and processing waste water, when intake 19~33 DEG C of water temperature, pH are for DO >=2mg/L in 6.6~7.3, gas-water ratio 15: 1, pond and stop Between 6.7h when, the average removal rate of water outlet COD and BOD is respectively 83.7%, 89.6%.4 various processing methods compare Tea Polyphenols The various processing methods for producing and processing waste water compare, and are shown in Table 1.5 have problem and developing direction Tea Polyphenols production and processing waste water is A kind of larger waste water of intractability, individually using physical-chemical process, chemical method or Biochemical method, effect is not ideal, gives up Shipwreck is with qualified discharge.Recent study personnel attempt using three kinds of Combination of Methods and obtaining good result.It is smokeless with SBR- Coal-quartz sand double-layer filter material filtering-active carbon absorption technology treatment Tea Polyphenols production and processing waste water, as a result shows, influent COD During for 1020mg/L or so, optimal water inlet phase 1h, reaction phase 4h, precipitation phase 2h, drainage period 0.5h, lay-up period 0h, aeration are used Non- Limited Aeration, water outlet COD, turbidity, colourity are down to below 40mg/L, 0.75NTU and 0 respectively, can be back to production.Use coagulation Sedimentation-hydrolysis acidification-catalytic oxidation-sand filtration PROCESS FOR TREATMENT sbr wastewater, the clearance of COD, BOD and SS exists respectively 95%th, 95% and more than 70%, its water quality parameter reaches GB8978-1996 composite wastewater first discharge standards, can be existing Treated sewage reusing is realized on device.Therefore, can more be improved using biology+physical-chemical process or chemical treatment efficiency.
Process choice
In test waste water it is not preprocessed and when directly carrying out aerobic treatment, one under conditions of being 35 DEG C in temperature As 5~9d also occur in that zoogloea disintegration.It follows that it is infeasible that aerobic treatment is directly carried out to the waste water 's.Due in the waste water it is contained mostly be natural materials, its molecular mass is larger, and can make the high score in water using hydrolysis acidification Sub- material is decomposed into small molecule in the presence of acid-producing bacteria, the load of Aerobic Process for Treatment is reduced, while can also make under anaerobic The Tea Polyphenols remained in waste water obtains Partial digestion, though very low to COD clearances, it is only 9.5% to stop 24h clearances, to tea The clearance of polyphenol is also very low, but the biodegradability of waste water improves 19.3%.Waste water is by accessing contact after hydrolysis acidification Oxidation technology, microorganism is attached on filler and not easily runs off, and is suitable for the requirement of Batch Process.Due to being difficult in pretreatment stage By Tea Polyphenols removal completely, it is aerobic there is no degradation substantially to Tea Polyphenols, thus Tea Polyphenols is gone in pretreatment stage Except whether effect completely for wastewater treatment it is critical that.COD's is average when catalytic oxidation hydraulic detention time is 12h Clearance can reach 85%, and last waste water is emitted at Yuyao City municipal sewage after being precipitated into secondary sedimentation tank by collecting-tank Reason factory.The discharge standard required in view of the factory their location is COD≤500mg/L, BOD5≤300mg/L, SS≤400mg/ L, thus may determine that the waste water treatment engineering technological process.
According to narration above, it can be appreciated that although Tea Polyphenols production and processing waste water treatment process is till now Comparative maturity, but on this field of Tea Polyphenols production and processing wastewater treatment, many problems are still suffered from, only by single Handling process be difficult make water outlet qualified discharge, it is necessary to existing technique is carried out it is integrated, using kinds of processes Combined Treatment Method, could qualified discharge, even turn waste into wealth, realize the purpose of comprehensive utilization of resources.If having grasped above technology, Tea Polyphenols production and processing waste water can just find a kind of real process is simple, thorough easy to operate, treatment, save energy and low cost Honest and clean processing method.
The content of the invention
It is an object of the invention to provide a kind of Tea Polyphenols production and processing wastewater treatment equipment and method, to solve the above-mentioned back of the body The problem proposed in scape technology.
To achieve the above object, the present invention provides following technical scheme：
A kind of Tea Polyphenols produces and processes wastewater treatment equipment, including infrastructure, the infrastructure by grille well, catchment Pond, reaction tank, preliminary sedimentation tank, flotation tank, regulating reservoir, hydrolytic tank, contact-oxidation pool, second pond, drainage well and sludge concentration tank group Into being mutually combined to form collection system, materializing strategy system, biochemical treatment system, medicine system, oxygen supply system between infrastructure System, sludge treating system and electric control system；The collection system is made up of grille well and collecting-tank；Materializing strategy system by Reaction tank, preliminary sedimentation tank and flotation tank composition；Biochemical treatment system is made up of hydrolytic tank, contact-oxidation pool and second pond；Dosing system System is made up of dosing pump and medicine-adding bin；Oxygen system is made up of centrifugal blower and pipeline；Sludge treating system by sludge concentration tank, Screw pump and plate and frame filter press are constituted；Also include switch board and PLC, switch board constitutes electric control system with PLC.
As further scheme of the invention：Be respectively delivered to water instead after being catchmented by the collecting-tank of the collection system Ying Chi and flotation tank, medicine-adding bin are connected with reaction tank, flotation tank respectively by dosing pump, and reaction tank is connected with preliminary sedimentation tank, air supporting Pond is connected with the fluid output port of preliminary sedimentation tank with regulating reservoir, and the sludge output end of preliminary sedimentation tank is connected with sludge concentration tank, regulating reservoir It is connected with hydrolytic tank, the output end connection contact-oxidation pool of hydrolytic tank, the output end of contact-oxidation pool is connected with second pond, is centrifuged The output channel of blower fan extend into the inside of regulating reservoir, contact-oxidation pool, the hydrolytic tank, second pond sludge output end with Sludge concentration tank is connected, and the output end of sludge concentration tank is connected with sludge pump, and sludge pump output terminal is connected with dehydration machine room, in dirt Pipe-line mixer, the fluid output port connection drainage well of the second pond are additionally provided with dredge pump and the pipeline of dehydration machine room.
As further scheme of the invention：The reaction tank is equipped with mixer with the inside of flotation tank.
As further scheme of the invention：Dewatering machine is provided with inside the dehydration machine room.
The method for carrying out wastewater treatment using above-mentioned Tea Polyphenols production and processing wastewater treatment equipment, comprises the following steps：
The first step, plant area are divided into coarse rack containing tea ployphenols wastewater and waste water containing fat, and coarse rack is big by diameter in waste water Fall in the rubbish filtering of 2cm, then separately access collecting-tank containing tea ployphenols wastewater and the parallel connection of waste water containing fat；
Second step, collecting-tank are collected into certain water and are promoted to reaction tank and air supporting by elevator pump respectively after reaching liquid level Pond, PAC and most Tea Polyphenols material in the precipitation removal waste water of hybrid reaction containing tea ployphenols wastewater are added by reaction tank, Again by various lipid materials in flotation tank air supporting removal waste water containing fat, by the tea ployphenols wastewater after reaction precipitation and air supporting Waste water containing fat together import regulating reservoir；
Hydrolytic tank is pumped into by elevator pump after 3rd step, the comprehensive wastewater regulation uniformly of regulating reservoir, waste water is by anaerobism water Larger molecular organicses are degraded to small organic molecule by solution, anaerobic bacteria, are decomposed by anaerobic bacteria and absorbed, and small organic molecule is entered One step is decomposed and absorbed, and is that next step catalytic oxidation is ready；
4th step, waste water enter contact-oxidation pool, and decomposition is further absorbed by the aerobic bacteria of contact-oxidation pool, waste water COD is further reduced, and treated water gravity flows into sedimentation in secondary sedimentation tank, and lower floor's sludge enters sludge concentration tank, and upper strata clear water is such as Treatment is up to standard, then be directly discharged into sewage network, and such as water outlet can not be up to standard, then water outlet pumps into hydrolytic tank and further follows by centrifugal pump Ring treatment；
Water in 5th step, second pond flows into drainage well qualified discharge.
Compared with prior art, the present invention is by collection system, materializing strategy system, biochemical treatment system, medicine system, confession Oxygen system, sludge treating system, electric control system composition, by the collaborative work of multiple systems, ensure that Tea Polyphenols is given birth to Produce processing waste water and obtain sufficiently effective reaction and treatment in processing system, also, present invention process is simple, easy to operate, place Reason thoroughly, save energy and with low cost.
Brief description of the drawings
Fig. 1 is the structural representation that Tea Polyphenols produces and processes wastewater treatment equipment.
In figure：1- grille wells, 2- collecting-tanks, 3- reaction tanks, 4- preliminary sedimentation tanks, 5- flotation tanks, 6- regulating reservoirs, 7- hydrolytic tanks, 8- contact-oxidation pools, 9- second ponds, 10- drainage wells, 11- sludge concentration tanks, 12- centrifugal blowers, 13- sludge pumps, 14- pipelines are mixed Clutch, 15- dewatering machines, 16- dosing pumps.
Specific embodiment
The technical scheme of this patent is described in more detail with reference to specific embodiment.
Refer to Fig. 1, a kind of Tea Polyphenols produces and processes wastewater treatment equipment, including infrastructure, the infrastructure by Grille well 1, collecting-tank 2, reaction tank 3, preliminary sedimentation tank 4, flotation tank 5, regulating reservoir 6, hydrolytic tank 7, contact-oxidation pool 8, second pond 9, Drainage well 10 and sludge concentration tank 11 are constituted, and are mutually combined to form collection system, materializing strategy system, biochemistry between infrastructure Processing system, medicine system, oxygen system, sludge treating system and electric control system；The collection system by grille well 1 and Collecting-tank 2 is constituted；Materializing strategy system is made up of reaction tank 3, preliminary sedimentation tank 4 and flotation tank 5；Biochemical treatment system by hydrolytic tank 7, Contact-oxidation pool 8 and second pond 9 are constituted；Medicine system is made up of dosing pump 16 and medicine-adding bin；Oxygen system is by centrifugal blower 12 And pipeline composition；Sludge treating system is made up of sludge concentration tank 11, screw pump and plate and frame filter press；Also include switch board and PLC, switch board constitutes electric control system with PLC.
Water is respectively delivered to reaction tank 3 and flotation tank 5, medicine-adding bin by the collecting-tank 2 of the collection system after being catchmented It is connected with reaction tank 3, flotation tank 5 respectively by dosing pump 16, reaction tank 3 is connected with preliminary sedimentation tank 4, flotation tank 5 and preliminary sedimentation tank 4 Fluid output port is connected with regulating reservoir 6, and the sludge output end of preliminary sedimentation tank 4 is connected with sludge concentration tank 11, regulating reservoir 6 and hydrolytic tank 7 connections, the output end connection contact-oxidation pool 8 of hydrolytic tank 7, the output end of contact-oxidation pool 8 is connected with second pond 9, and wind is centrifuged The output channel of machine 12 extend into regulating reservoir 6, the inside of contact-oxidation pool 8, the hydrolytic tank 7, the sludge output end of second pond 9 It is connected with sludge concentration tank 11, the output end of sludge concentration tank 11 is connected with sludge pump 13, the output end of sludge pump 13 and dehydration Computer room is connected, and pipe-line mixer 14, the liquid output of the second pond 9 are additionally provided with the pipeline of sludge pump 13 and dehydration machine room End connection drainage well 10.
The reaction tank 3 is equipped with mixer with the inside of flotation tank 5.
Dewatering machine 15 is provided with inside the dehydration machine room.
The method for carrying out wastewater treatment using above-mentioned Tea Polyphenols production and processing wastewater treatment equipment, comprises the following steps：
The first step, plant area are divided into grille well 1 containing tea ployphenols wastewater and waste water containing fat, using the thick lattice in grille well 1 Grid, coarse rack falls the rubbish filtering in waste water with diameter greater than 2cm, is then separately connect containing tea ployphenols wastewater and the parallel connection of waste water containing fat Enter collecting-tank；
Second step, collecting-tank 2 are collected into certain water and are promoted to reaction tank 3 and gas by elevator pump respectively after reaching liquid level Floating pond 5, PAC is added with most Tea Polyphenols in the precipitation removal waste water of hybrid reaction containing tea ployphenols wastewater by reaction tank 3 Material, then various lipid materials in waste water containing fat are removed by the air supporting of flotation tank 5, by the tea ployphenols wastewater after reaction precipitation and The waste water containing fat of air supporting together imports regulating reservoir 6；
Hydrolytic tank 7 is pumped into by elevator pump after 3rd step, the comprehensive wastewater regulation uniformly of regulating reservoir 6, waste water is by anaerobism Larger molecular organicses are degraded to small organic molecule by hydrolysis, anaerobic bacteria, are decomposed by anaerobic bacteria and absorbed, by small organic molecule Further decompose and absorb, be that next step catalytic oxidation is ready；
4th step, waste water enter contact-oxidation pool 8, and decomposition, waste water are further absorbed by the aerobic bacteria of contact-oxidation pool 8 COD further reduce, treated water gravity flows into second pond 9 and precipitates, and lower floor's sludge enters sludge concentration tank 11, and upper strata is clear Water such as processes up to standard, then be directly discharged into sewage network, and such as water outlet can not be up to standard, then water outlet pumps into hydrolytic tank and enters one by centrifugal pump Step circular treatment；
Water in 5th step, second pond flows into drainage well qualified discharge.
Production waste water is divided to two strands of waste water respectively including waste water containing fat and containing tea ployphenols wastewater, and two bursts of waste water parallel connections are divided into Collecting-tank, then will contain tea ployphenols wastewater and be promoted to reaction tank dosing reaction by elevator pump, be precipitated into preliminary sedimentation tank after reaction, together When will contain fat waste water lifting to flotation tank and dosing air supporting, can together enter with the above-mentioned tea ployphenols wastewater containing removal after air supporting degreasing Regulating reservoir, hydrolytic tank, contact-oxidation pool and second pond are promoted to after regulating reservoir aeration is mixed well successively by elevator pump again, are finally led to Cross drainage well discharge.Ensure that Tea Polyphenols production and processing waste water obtains sufficiently effective reaction and treatment in processing system.
The present invention is by collection system, materializing strategy system, biochemical treatment system, medicine system, oxygen system, Treatment of Sludge System, electric control system composition, by the collaborative work of multiple systems, ensure that Tea Polyphenols production and processing waste water in treatment System obtains sufficiently effective reaction and treatment, also, present invention process is simple, easy to operate, treatment thoroughly, save energy and It is with low cost.
The better embodiment to this patent is explained in detail above, but this patent is not limited to above-mentioned embodiment party Formula, in the ken that one skilled in the relevant art possesses, can also be on the premise of this patent objective not be departed from Make a variety of changes.

Claims (5)

1. a kind of Tea Polyphenols produces and processes wastewater treatment equipment, it is characterised in that including infrastructure, the infrastructure is by lattice Grid well, collecting-tank, reaction tank, preliminary sedimentation tank, flotation tank, regulating reservoir, hydrolytic tank, contact-oxidation pool, second pond, drainage well and sludge Concentration basin is constituted, and is mutually combined to form collection system, materializing strategy system, biochemical treatment system, dosing system between infrastructure System, oxygen system, sludge treating system and electric control system；The collection system is made up of grille well and collecting-tank；Materialization Processing system is made up of reaction tank, preliminary sedimentation tank and flotation tank；Biochemical treatment system is by hydrolytic tank, contact-oxidation pool and second pond group Into；Medicine system is made up of dosing pump and medicine-adding bin；Oxygen system is made up of centrifugal blower and pipeline；Sludge treating system is by dirt Mud thickener, screw pump and plate and frame filter press composition；Also include switch board and PLC, switch board and PLC composition electrical controls system System.
2. Tea Polyphenols according to claim 1 produces and processes wastewater treatment equipment, it is characterised in that the collection system Water is respectively delivered to reaction tank and flotation tank by collecting-tank after being catchmented, medicine-adding bin by dosing pump respectively with reaction tank, gas Floating pond connection, reaction tank is connected with preliminary sedimentation tank, and flotation tank is connected with the fluid output port of preliminary sedimentation tank with regulating reservoir, the dirt of preliminary sedimentation tank Mud output end is connected with sludge concentration tank, and regulating reservoir is connected with hydrolytic tank, the output end connection contact-oxidation pool of hydrolytic tank, contact The output end of oxidation pond is connected with second pond, and the output channel of centrifugal blower extend into the inside of regulating reservoir, contact-oxidation pool, institute State hydrolytic tank, the sludge output end of second pond is connected with sludge concentration tank, the output end of sludge concentration tank is connected with sludge pump, Sludge pump output terminal is connected with dehydration machine room, and pipe-line mixer, described two are additionally provided with the pipeline of sludge pump and dehydration machine room The fluid output port connection drainage well in heavy pond.
3. Tea Polyphenols according to claim 2 produces and processes wastewater treatment equipment, it is characterised in that the reaction tank and gas The inside in floating pond is equipped with mixer.
4. Tea Polyphenols according to claim 2 produces and processes wastewater treatment equipment, it is characterised in that in the dehydration machine room Portion is provided with dewatering machine.
5. a kind of Tea Polyphenols production and processing wastewater treatment equipment as described in claim 1-4 is any carries out the side of wastewater treatment Method, it is characterised in that comprise the following steps：
The first step, plant area are divided into coarse rack containing tea ployphenols wastewater and waste water containing fat, coarse rack by waste water with diameter greater than 2cm Rubbish filtering fall, then containing tea ployphenols wastewater and waste water containing fat parallel connection separately access collecting-tank；
Second step, collecting-tank are collected into certain water and are promoted to reaction tank and flotation tank by elevator pump respectively after reaching liquid level, PAC and most Tea Polyphenols material in the precipitation removal waste water of hybrid reaction containing tea ployphenols wastewater are added by reaction tank, then Various lipid materials in waste water containing fat are removed by flotation tank air supporting, by the tea ployphenols wastewater after reaction precipitation and air supporting Waste water containing fat together imports regulating reservoir；
Hydrolytic tank is pumped into by elevator pump after 3rd step, the comprehensive wastewater regulation uniformly of regulating reservoir, waste water is detested by anaerobic hydrolysis Larger molecular organicses are degraded to small organic molecule by oxygen bacterium, are decomposed by anaerobic bacteria and absorbed, and small organic molecule is further Decompose and absorb, be that next step catalytic oxidation is ready；
4th step, waste water enter contact-oxidation pool, and decomposition, the COD of waste water are further absorbed by the aerobic bacteria of contact-oxidation pool Further reduce, treated water gravity flows into sedimentation in secondary sedimentation tank, lower floor's sludge enters sludge concentration tank, and upper strata clear water is as processed It is up to standard, then sewage network is directly discharged into, such as water outlet can not be up to standard, then water outlet pumps into hydrolytic tank further at circulation by centrifugal pump Reason；
Water in 5th step, second pond flows into drainage well qualified discharge.
CN201611196304.5A 2016-12-22 2016-12-22 Tea polyphenol production and processing wastewater treatment device and method Pending CN106698822A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108178388A (en) * 2017-12-30 2018-06-19 浙江工业大学 The method that electric Fenton coupling coagulating sedimentation improves tea polyphenol extract wastewater biodegradability

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108178388A (en) * 2017-12-30 2018-06-19 浙江工业大学 The method that electric Fenton coupling coagulating sedimentation improves tea polyphenol extract wastewater biodegradability

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