CN101531424A - Sewage purification and reuse process and equipment thereof - Google Patents

Sewage purification and reuse process and equipment thereof Download PDF

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Publication number
CN101531424A
CN101531424A CN200810050471A CN200810050471A CN101531424A CN 101531424 A CN101531424 A CN 101531424A CN 200810050471 A CN200810050471 A CN 200810050471A CN 200810050471 A CN200810050471 A CN 200810050471A CN 101531424 A CN101531424 A CN 101531424A
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China
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sewage
water
tank
mud
precipitation
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CN200810050471A
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张士博
刘春燕
李延韬
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SIPING HAITE ENVIRONMENT PROTECTION EQUIPMENT CO Ltd
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SIPING HAITE ENVIRONMENT PROTECTION EQUIPMENT CO Ltd
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Abstract

The invention relates to a sewage purification and reuse process and equipment thereof which are applicable to small and medium heavy pollution enterprises; the sewage purification and reuse process adopts a composite efficient flocculant as a core pollution control reagent for the solid/liquid separation of sewage, and is achieved by three process steps, namely, precipitation and mud removal I, measurement and mixing II, and separation and purification III. The process and equipment thereof have small occupied area, less construction investment and low operation cost, is especially applicable to the sewage treatment of small and medium heavy pollution enterprises in paper, leather, printing and dyeing, electroplating, food, chemical industries, and the like, and can realize sewage reuse, environmental protection, and development of economic multiple benefits.

Description

Sewage purification and reuse process and equipment thereof
Technical field
The present invention relates to a kind of sewage treatment process, a kind of specifically sewage purification and reuse process and equipment thereof that is applicable to middle-size and small-size polluted enterprises.
Background technology
Along with the fast development of China's industrialization, urbanization, the particularly development of the national economy grow at top speed for years, the quantum of output of sanitary sewage and trade effluent is more and more.In the sewage of these outputs, contain multiple hazardous and noxious substances mostly, polluted-water, contaminate environment are detrimental to health; Middle-size and small-size polluted enterprises such as the papermaking of One's name is legion, process hides, printing and dyeing, plating, food, chemical industry particularly, the trade effluent hazard rating of discharge is even more serious, and control measures is careless slightly will to cause sudden environment event.Now, administering sewage, protect environment, become the important duty of governments at all levels, also is the important social responsibility of numerous middle-size and small-size contaminating enterprises.
Though China is developing country, the Chinese government as far back as last century the eighties just " protection environment " is defined as fundamental state policy; Clearly proposed to realize the Implementation Strategy of the sustainable development of socio-economy recent years again.For this reason, country drops into a large amount of human and material resources, and the strengthen environmental protection measure is built.According to the pertinent data introduction; in Tenth Five-Year Plan Period, country utilizes national debt fund to arrange 359 of national environment protection construction projects, and state revenue utilizes national debt fund to drop into about 8,300,000,000 yuan; drive about 16,200,000,000 yuan of local finance and enterprise investment, gross investment is up to 24,500,000,000 yuan.The Eleventh Five-Year Plan period, country's special investment of being used for environment protection increases by a fairly big margin again.
Though the sewage disposal technology of China is started late; but along with the policy execution of state guarantee environment and making constant progress of science and technology; sewage disposal technology has also obtained fast development; more sophisticated complete sewage disposal devices such as physical treatment, chemical treatment, biological treatment, soil processing; accepted by numerous dealers gradually; much big or middle city and large-lot producer use these mature technologies one after another, build a collection of sewage-farm, and waste water control presents the fast-developing scene of a slice.Take a broad view of these and now built up the also sewage treatment facility of normal operation input, the ubiquity floor space is big, construction investment is many, poor processing effect, the high deficiency of working cost or weakness, and all there is the immense pressure of keeping operation by the state revenue and expenditure investment construction, by the state revenue and expenditure subsidy in most project.Although there are a lot of problems not fully up to expectations in these sewage-farms, but do not have the sewage-farm at present as yet directly to natural water discharging raw sewage than those, or utilize facilities such as the seepage well simply build, seepage pit, crack, solution cavity to topple over raw sewage, though or have sewage treatment facility but there has been huge advance made in city or enterprise of still directly discharging raw sewage often consciously or unconsciously out of service.But, if deep study and analysis more just can very clearly be seen: a considerable amount of cities and enterprise are arranged, particularly numerous medium and small sized enterprises, unable really raising built the required large amounts of construction fund of sewage treatment facility; Both or by various means raised the required fund of building, also the huge principal and interest of insolvency infusion of financial resources generation again; Both or obtain preferential policies such as free of interest or subsidy, also the day-to-day operation maintenance cost of financial insolvency great number.For this reason, much Senior Expert is thought with the dealer is consistent in the industry: China's waste water control will realize target and the requirement planned, except that research and development large-scale sewage disposal technology and suite of equipment, also must develop out a collection of advanced technology, pure science, dependable performance, easy and simple to handle, floor space is little, construction investment is few, working cost is low, sewage can be realized cleansing and recycling after treatment middle-size and small-size sewage disposal technology and relevant art equipment; Particularly want preferential development develop a collection of heavily contaminated medium-sized and small enterprises such as papermaking, process hides, printing and dyeing, plating, food, chemical industry that can allow and really afford to build, can use, profitable middle-size and small-size sewage disposal technology and relevant art equipment.
Summary of the invention
The present invention is exactly deficiency or the weakness at middle-size and small-size sewage disposal technology of present domestic urgent need and technical equipment thereof, sewage characteristics and construction operation ability to take the burden thereof according to middle-size and small-size polluted enterprises, start with from fundamental research, need from the objective reality of application, provide that a kind of floor space is little, construction investment is few, working cost is low, dirty removal capacities is strong, Collecting flocculation agent adsorption-flocculation separates, air-dissolving air-float separates, and processing steps such as chlorination chemistry redox, charcoal absorption filtration are in the sewage purification and reuse process and the equipment special thereof of one.
The object of the present invention is achieved like this:
This sewage purification and reuse process mixes three processing steps of II, isolation of purified III by precipitation desilt I, metering.
Described precipitation desilt I step is: the sewage that will produce discharge enters the pipe core of settling tank except that the water inlet pipe of mud sump by vertical-flow precipitation after the sewage header is collected; Sewage is done vertical flowing downwards at pipe core, for preventing current disturbance precipitating sludge, establishes hydraucone and reflector buffering in the pipe core lower end, and sewage can slowly flow in the settling tank around reflector; Sewage stays in the time in that settling tank is left alone without help, and by the effect of suspended substance own wt, the suspended substance in the sewage is finished automatic precipitation process and dropped on the settling tank bottom; The suction mud mouth of shore pipe is located at the bottom that vertical-flow precipitation is removed mud sump, by the hydrostaticpressure and the syphonic effect of settling tank, the mud that is deposited in the settling tank bottom is picked up, discharges; And send in the revolving horizontal drum whizzer, accept processed; Top at settling tank is provided with annular collecting vat, coming to produce overflow under the water extruding, can flow into water leg automatically through the sewage after the precipitation process along the top mouth of settling tank shell; Through being located at the water outlet on the water leg, be sent in the permanent position water tank in the measurement mixing unit again, accept the combination treatment of mixing flocculation agent;
Mud by the sludge from sedimentation tank mouth is discharged is sent in the revolving horizontal drum whizzer, by the high speed rotating of centrifugal basket, finishes solid and liquid separation in the mud; That separates that the back produces contains the mud liquid sewage, discharges from the water outlet of whizzer, and is sent back in the sewage header by pipeline, prepares to accept precipitate and separate once more;
The solid dewatered sludge that the separation back produces forms mud cake, discharges from the discharge gate of whizzer, falls on the conveying belt of mud cake conveyer, is sent to storage place and keeps in, and prepares to accept ultimate disposal.
Described metering mixing II step is: be preparation flocculation agent lysate (compound high-efficiency flocculating agent is in first to file, application number 200810050405.0), the even in proportion blending of flocculation agent lysate is advanced in the sewage.Before mixing sewage, must be prepared into the flocculation agent lysate by the lysate agitator; And then, lysate evenly is injected into continuously in the duct type mixing tank of effluent stream warp by adding the suitable proportion of volume pump by the amount of disposing of sewage.For the discharge of sewage of guaranteeing to handle has constant number, the flocculation agent lysate can be advanced in the sewage in even in proportion blending, in measurement mixing unit, designed permanent position water tank.Remove the sewage that mud sump is discharged from vertical-flow precipitation, all send in the water tank of permanent position by pipeline; Water outlet at permanent position water tank has designed the dip hatch oralia, to carrying out the aperture metering from the effusive sewage of permanent position water tank.Sewage through the aperture metering is sent in the duct type mixing tank by pipeline; Sewage is realized continuously uniform mixing in proportion with the flocculation agent lysate that is injected in the duct type mixing tank when flowing through the duct type mixing tank, and is sent in the air-flotation type separating reaction treater in the separation purifier by pipeline.
Described isolation of purified III step is: in metering blended duct type mixing tank blending the sewage of suitable proportion flocculation agent, enter the Reaction Separation district by sewage inlet pipe; Meanwhile, the liquid chlorine of pressurized air that air driven pump produces and the filling of rotor chlorinating machine after dissolving is mixed into chloride pressurized air, enters pipe via gas and enters the aerating pore scatterer, discharges in the sewage that enters the Reaction Separation district with the microbubble form.Enter the sewage in Reaction Separation district, absorption, flocculation through flocculation agent, after the combined reactions such as pollution treatment medicament scrubbing that the chemical reduction reaction of available chlorine, auxiliary balling iron drop into are handled, all kinds of inorganic substance that contain in the sewage and the subparticle of organic substance, form air float body formula scum silica frost with microbubble or floc sedimentation, at the buoyancy float downward to the scum silica frost district.In the scum silica frost district, scum silica frost is scraped in the scraper plate rotation of dregs scraper and is swept down, discharges by the scum silica frost relief outlet, realizes solid/liquid separation.Scum silica frost after the separation is sent the sewage header back to by pipeline, and then sends into vertical-flow precipitation and remove mud sump, accepts mud-water separation again and handles.The residual air that produces in the combined reaction treating processes is compiled in the space on top, scum silica frost district, and is discharged by venting port; For the residual air of avoiding producing in the combined reaction treating processes has the chlorine-containing gas contaminate environment, there is chlorine residue Monitoring and Controlling instrument to carry out Monitoring and Controlling in the venting port design.Enter the sewage in Reaction Separation district, after combined reaction is handled, realized that the sewage natural after the solid/liquid separation flows to the tank body below; In flow process by the adsorption filtration district.In the adsorption filtration district, design can further be removed and still contain the microactuator suspension fine particle in the sewage, impurity such as heavy metal ion by the adsorption filtration layer of being made up of filtrates such as gac, quartz sand, gravels.Sewage is cleaned into middle water after handling through adsorption filtration, enters and purifies the water reserve; Discharge from water outlet then, send to and filter in the water reservoir, accept further purifying treatment again.
The operating process of filtering water reservoir is; The middle water of sending from the air-flotation type separate reactor flows in the transition water tank of strumbox through the filter box water inlet pipe, waits to hold after the Man Zhongshui, and into filtering basin overflow; Absorption through activated carbon adsorption layer, pass through the filtration of quartz sand filtration layer and gravel packing again, impurity such as the hardly degraded organic substance that still contains in the water in removing out more completely, fine suspended particle, heavy metal ion, reach the reuse water standard, flow in the water storage box through the filter box rising pipe again and save.During use, extract out through the water storage box rising pipe, deliver to water unit with lift pump.
Filter water reservoir after use for some time, must clean; Clean and adopt the clear water recoil method.During cleaning, the valve of water water inlet pipe and strumbox rising pipe in closing earlier; Open the valve of recoil water water inlet pipe and recoil water rising pipe again, recoil water passes through gravel packing, quartz sand filtration layer, activated carbon adsorption layer successively, and water becomes reversed flow during with operation.The current of recoil water can be taken away the sticking impurity that retains at each Filtration Adsorption layer of telling, and flow out from recoil water rising pipe through the transition water tank again.
Described precipitation desilt I step adopts sewage header, vertical-flow precipitation to remove mud sump, revolving horizontal drum whizzer, four processing units of mud cake conveyer.
Described metering mixing II step adopts the lysate agitator, adds volume pump, permanent position water tank, four processing units of duct type mixing tank.
Described isolation of purified III step adopts air-flotation type separating reaction treater (in first to file, application number 200820071422.8), filters two processing units of water reservoir.
The present invention has the following advantages and positively effect:
The floor space that the present invention is directed to the existence of domestic existing sewage disposal technology and equipment is big, construction fund is many, poor processing effect, working cost height, by the state revenue and expenditure investment construction, keep the weakness or the deficiency of operation by the state revenue and expenditure subsidy, research and development are designed and can be adapted to middle-size and small-size polluted enterprises needs, and just can afford to build with funds at ther disposal of autonomy, can really solve the middle-size and small-size sewage purification and reuse technology and the equipment thereof of the waste water control problem of enterprise after being constructed and put into operation.For achieving this end, the invention solves following technical problem.
1., at the sewage characteristic that middle-size and small-size polluted enterprises produces, at first research and design goes out a kind of have higher degrees of polymerization, high relative molecular mass, lower, the simple compound high-efficiency flocculating agent of usage of consumption.Because of this flocculation agent has distinctive molecular structure and chemical functional, the subparticle in the severe polluted water had stronger absorption, throwing out; Use this flocculation agent, just can adsorb the subparticle of all kinds of inorganic substance that contain in the serious pollution water and hardly degraded organic substance matter, be condensed into floc sedimentation, remove this floc sedimentation and just can realize improving the purpose that purifies water, method is easy, and be respond well.The present invention successfully Development and design goes out this flocculation agent, has both solved the core technology problem of administering serious pollution water, greatly reduces the working cost of administering serious pollution water again.
2., the present invention administers the technological line of severe sewage according to using flocculation agent, research and design goes out air-flotation type separating reaction treater and equips as core technology.This reactor, Collecting flocculation agent adsorption-flocculation technology, air-dissolving air-float isolation technique, chlorination chemical reduction technology, charcoal absorption filtering technique are in one, both solve the technical barrier of administering the complicated serious pollution water of composition with a kind of equipment, reduced the construction investment expense again.
3., research and design of the present invention goes out by the precipitation desilt----to measure and mix the science complete process technological line that three partial function apparatus for work such as----isolation of purified etc. are formed, possessed repertoires such as the afflux of administering serious pollution water, precipitation, desilt, mixing, processing, separation, purification, realized the purpose to severe polluted water cleansing and recycling, the coupling that has solved when carrying out actual motion is connected the technical barrier of operating.
Description of drawings
Fig. 1 is a sewage purification and reuse process route synoptic diagram.
Fig. 2, the 3rd, vertical-flow precipitation is removed mud sump one-piece construction synoptic diagram.
Fig. 4 is an air-flotation type separating reaction processor structure synoptic diagram.
Fig. 5 filters the water reservoir structural representation.
Embodiment:
As shown in Figure 1: the present invention's middle-size and small-size polluted enterprises sewage purification and reuse technology and equipment thereof are to use a kind of compound high-efficiency flocculating agent of invention of creating as the dirty medicament of the core system of sewage solid/liquid separation; Mix II, isolation of purified III etc. and form the key operation function system by precipitation desilt I, metering; By the technical equipment of each system configuration, bear and carry out operation functions such as afflux, precipitation, desilt, mixing, processing, separation, purification producing the severe sewage of discharging, realize the cleansing and recycling of sewage.
(flocculation agent is in first to file to the compound high-efficiency flocculating agent of described original creation invention, application number 200810050405.0), it is the characteristic of discharging manufacture waste water at middle-size and small-size serious pollution such as papermaking, process hides, printing and dyeing, plating, food, chemical industry enterprise, according to high molecular polymer subparticle in the sewage is had the know-why of absorption, throwing out more by force, a kind of compound high-efficiency flocculating agent with higher degrees of polymerization and high relative molecular mass is invented out in original creation.The optimum proportion component ratio of this flocculation agent is: 75 parts of polyacrylamides; 8 parts in vinylformic acid; 6 parts of Natvosols; 6 parts of ethyl propenoates; 3 parts in ferrous sulfate; 2 parts in Tai-Ace S 150.--building-up reactions--stable--vacuum hydro-extraction--spraying drying that concentrates that the preparation were established of this flocculation agent is: metering is mixed.
Shown in accompanying drawing 1 and accompanying drawing 2,3: described precipitation desilt I comprises that sewage header 4, vertical-flow precipitation are except that technical equipment such as mud sump 3, revolving horizontal drum whizzer 2, mud cake conveyers 1.
The moisture scum silica frost that contains dirt water, reactor 10 discharges that sewage that production is discharged and whizzer of the present invention 2 are discharged after sewage header 4 is collected, except that the water inlet pipe 20 in the mud sump 3, enters pipe core 16 by vertical-flow precipitation.Sewage is done vertical flowing downwards in pipe core 16, through the buffering of pipe core lower end hydraucone and reflector 14, slowly flow into the settling tank around reflector.Sewage is in the residence time of settling tank, and by the weight effect of suspended substance self, the suspended substance in the sewage is finished precipitation process automatically, drops on the bottom of settling tank.In the settling tank bottom, be provided with the suction mud mouth of shore pipe 13, by the hydrostaticpressure and the syphonic effect of settling tank,, and, send in the revolving horizontal drum whizzer 2 from mud discharging mouth 15 discharges the mud inspiration shore pipe 13 that is deposited in the settling tank bottom, accept dehydration technique and handle.On the top of settling tank, be provided with annular collecting vat 17 along settling tank shell 12 top mouths; Under the extruding that comes water, produce overflow through the sewage after the precipitate and separate processing, and flow into automatically in the annular collecting vat 17 along settling tank shell top mouth; Through being located at the rising pipe 18 on the water leg, be sent in the water tank 7 of permanent position again, accept the metering hybrid technology and handle.
Mud by sludge from sedimentation tank mouth 15 is discharged is sent in the revolving horizontal drum whizzer 2, by the high speed rotating of centrifugal basket, finishes separating once more of solid particulate in the mud and liquid sewage fast.The liquid that separates the back generation contains dirt water, discharges from the water outlet of whizzer, and is sent back in the sewage header 4 by pipeline, prepares to accept precipitate and separate once more.Separate the solid dewatered sludge that the back produces, form mud cake, discharge, fall on the conveying belt of mud cake conveyer 1 of configuration, and it is temporary to be sent to storage place, prepares to accept ultimate disposal from the discharge gate of whizzer.
As shown in Figure 1: technical equipment such as described metering mixing II comprises lysate agitator 6, adds volume pump 8, permanent position water tank 7, duct type mixing tank 9.
Described flocculation agent is a powdery product, before blending in sewage, must be prepared into certain density flocculation agent lysate by lysate agitator 6.The concentration outfit ratio of flocculation agent lysate is: 1 part of flocculation agent powder quality share, add 49 parts of dilution tap water quality shares.Preparation flocculation agent lysate is finished by lysate agitator 6; The running technology parameter is: agitator velocity of rotation: 〉=45r/min; Churning time: 〉=25min; Heating and temperature control is at 40~50 ℃.Have certain density flocculation agent lysate prepare qualified after, the lysate of packing into adds in the container for storing liquid of volume pump 8 standby.Sewage quantity to be processed as required during use, with the part by weight of 1:10, the pressure that adds with 〉=0.15Mpa evenly is expelled in the duct type mixing tank 9 of effluent stream warp continuously.
Dispose of sewage from the need that settling tank is discharged, all will send in the permanent position water tank 7 of setting by pipeline.Simultaneously, the dip hatch oralia is arranged, effusive need from the water tank 7 of permanent position are disposed of sewage, carry out the aperture metering in the water outlet design and installation of permanent position water tank.Through the sewage of aperture metering, when flowing through duct type mixing tank 9, and add the flocculation agent lysates that volume pump 8 evenly is injected in the duct type mixing tank 9 continuously and realized uniform mixing in proportion with constant rate.At this moment, the flocculation agent in need disposing of sewage uses does matter content, reaches 2 ‰ effective concentration of the present invention's design.In duct type mixing tank 9, through containing flocculation agent sewage behind the uniform mixing in proportion, be sent in the air-flotation type separating reaction treater 10 by pipeline, accept isolation of purified and handle.
Shown in accompanying drawing 1 and accompanying drawing 4, accompanying drawing 5: described isolation of purified III comprises air-flotation type separating reaction treater 10, filter technical equipments such as water reservoir 11 forms.
Air-flotation type separating reaction treater 10, global design become right cylinder jar shape.Clean for ease of maintenance, tank body is made up of lower tank 23, upper tank body 35, is connected and fixed by ring flange 36.According to the operation function difference, be divided into residual air scum silica frost district 34, Reaction Separation district 27, adsorption filtration district 25 from top to bottom, purify water reserve 22; Be provided with the adsorption filtration floor of forming by filtrates such as gac, quartz sand, gravels in adsorption filtration district 25.According to the operation function needs, also be provided with less important work functional devices such as liquid chlorine storage bottle 41, rotor chlorinating machine 39, air driven pump 40, aerating pore scatterer 26, auxiliary balling iron 37, dregs scraper 30, chlorine residue Monitoring and Controlling instrument 31.
Air-dissolving air-float is a kind of maturation solid/liquid separation technique efficiently; It is the supersaturated air dissolved under pressure, discharges with the microbubble form in sewage; Utilize the surface chemistry principle, microbubble can adhere to the subparticle in the sewage, forms the air float body of density less than water, floats downward to the water surface in buoyancy.The present invention's blending in severe sewage has the compound high-efficiency flocculating agent of suitable proportion, absorption, throwing out by flocculation agent, can be the subparticle absorption in the sewage, flocculate into density less than the floc sedimentation of water or wadding bar, can lean on buoyancy floating automatically to the water surface; By or the microbubble that forms of sticking floating air-dissolving air-float technology, can be easier to be floating to the water surface, be more convenient for realizing solid/liquid separation.
In duct type mixing tank 9 blending the sewage of flocculation agent, be sent in the Reaction Separation district 27 by sewage inlet pipe 38; Meanwhile, liquid chlorine in the liquid chlorine storage bottle 41, through rotor chlorinating machine 39 injecting compressed air pipelines, mix with the pressurized air dissolving that air driven pump 40 produces, produce chloride pressurized gas, after gas enters pipe 24 and aerating pore scatterer 26, in the sewage that enters Reaction Separation district 27, discharge with the microbubble form; The microbubble diameter generally all≤0.3mm.Chloride compressed-air actuated air demand, the unit volume of disposing of sewage with needs per hour expense serve as to calculate radix, contain dirty concentration according to sewage, generally are controlled at 0.5~0.8m 3/ m 3.h; The content of chlorine in pressurized air generally is controlled at 1:18~20; Chloride compressed air pressure generally is controlled at 0.05~0.08Mpa.Simultaneously, according to principal pollutant and specific pollutant different qualities, also in sewage, throw in required special pollution treatment medicament by being arranged on the auxiliary balling iron 37 on the sewage water inlet pipe 38.
Enter the sewage in Reaction Separation district 27, the subparticle that produces after the comprehensive treating processs such as dioxygen oxidation reductive action, special pollution treatment medicament scrubbing reactivity, the effect of flocculation agent adsorption-flocculation in the chemical reduction reaction effect of available chlorine, the pressurized air, the former all kinds of inorganic substance that contain of sewage and the subparticle of organic substance, suspended substances such as the floc sedimentation that flocculation agent absorption, throwing out produce, wadding bar, all with the microbubble recombine that produces, form the air float body formula scum silica frost of density less than water, at the buoyancy float downward to residual air scum silica frost district 34.
In scum silica frost district 34, scum silica frost is scraped in the rotation of dregs scraper 30 dreg scrapers 29 and is swept down, is blown into scum silica frost vent pipe 28, has realized the solid/liquid separation of sewage.Scum silica frost after the separation is sent back in the sewage header 4 by pipeline, enters vertical-flow precipitation once more and removes in the mud sump 3, accepts mud-water separation once more and handles.Sewage injects in Reaction Separation district 27 contains oxygen pressurized air, participate in processing reaction with the microbubble form to sewage after, residual gas is focused at the upper space in scum silica frost district 34, discharges by venting port 32.In theory, chlorine is a kind of deleterious irritant gas, and when airborne chlorine gas concentration reached 40~60mg/L, the people breathes 0.5~1.0h in this environment just danger may occur; But chlorine particularly after the sewage water filtration dissolving, does not have again the chlorine that is detrimental to health to overflow through water.But be protection operator safety; prevent pollutant atmosphere; when design liquid chlorine add-on; just select to have designed the adding numerical value that is lower than the dangerous concentrations lower limit; simultaneously in the venting port design and installation chlorine residue Monitoring and Controlling instrument 31, monitor in real time by GB16297-1966 " discharge standard of air pollutants ".
The sewage that enters Reaction Separation district 27 is realized the liquid sewage that solid/liquid separation produces after combined reaction is handled, by the own wt pressure adsorption filtration district 25 that flows through downwards.In adsorption filtration district 25, be provided with the filtering layer of forming by filtrates such as gac, quartz sand, gravels, though to handling through solid/liquid separation, but in liquid sewage, still can contain suspended substances such as a spot of subparticle, heavy metal ion, carry out adsorption filtration technical finesse again.After adsorption filtration is handled, just be cleaned into " middle water ", flow to and purify water reserve 22; By water outlet 21, be sent to and filter water reservoir 11 then, accept deep purifying again and handle.
Filtering water reservoir 11 is the middle water that obtains after combined reaction is handled in order to make, and can really reach reuse standard and the absorption carried out, filters the even depth purifying treatment and save the stand-by technical equipment of water purification.Filter water reservoir 11, global design becomes conjuncted case structure; Form by strumbox 48, water storage box 43 and corresponding pipeline, valve.In strumbox 48, be provided with transition water tank 49, activated carbon adsorption layer 47, quartz sand filtration layer 46, gravel packing 45, designed the recoil cleaning function simultaneously.
The middle water that water purification water reserve 22 from air-flotation type separate reactor 10 is sent flows in the transition water tank 49 through filter box water inlet pipe 50; After water tank 49 to be filtered holds Man Zhongshui, into filtering basin overflow, and after successively handling through degree of depth absorption, the filtration, purification of activated carbon adsorption layer 47, quartz sand filtration layer 46, gravel packing 45 respectively, the fine suspended substance, the heavy metal ion that contain in the water in can removing more up hill and dale, impurity such as COD, BOD, total phosphorus, total nitrogen, bacterium, virus, make it can reach the IV class water quality standard that is equivalent among the GB3838-2002 " water environment quality standard ", become the non-direct contact industrial reuse water of qualified human body; Industrial reuse water flows in the water storage box 43 through filter box rising pipe 44 and saves.During use, extract out through water storage box rising pipe 42, directly deliver to each water unit with lift pump.
For guaranteeing the water quality of industrial reuse water, after strumbox 48 uses for some time, must clean; Clean and adopt the clear water recoil method.During cleaning, close the valve of strumbox water inlet pipe 50 and strumbox rising pipe 44 earlier, and then open the valve of recoil water water inlet pipe 52 and recoil water rising pipe 51; Recoil water is after recoil water water inlet pipe 52 enters strumbox 48, reversed flow by middle water filtration, successively flow through successively gravel packing 45, quartz sand filtration layer 46, activated carbon adsorption layer 47, the impurity that current can be washed away and hold back when taking away adsorption filtration flows out from recoil water rising pipe 51 through transition water tank 49 again.

Claims (8)

1, sewage purification and reuse process is characterized in that: this sewage purification and reuse process adopts the core pollution treatment medicament of a kind of compound high-efficiency flocculating agent as the sewage solid/liquid separation; Mix (II), three processing steps realizations of isolation of purified (III) by precipitation desilt (I), metering.
2, sewage purification and reuse process according to claim 1, it is characterized in that: described precipitation desilt (I) step is: the sewage that will produce discharge is after sewage header (4) is collected, and the water inlet pipe (20) that removes mud sump (3) by vertical-flow precipitation enters pipe core (16); Sewage is done vertical flowing downwards at pipe core (16), for preventing current disturbance precipitating sludge, establishes hydraucone and reflector (14) buffering in pipe core (16) lower end, and sewage can slowly flow in the settling tank all around from reflector (14); Sewage stays in the time in that settling tank is left alone without help, and by the effect of suspended substance own wt, the suspended substance in the sewage is finished automatic precipitation process and dropped on the settling tank bottom; The suction mud mouth of shore pipe (13) is located at the bottom that vertical-flow precipitation is removed mud sump (3), by the hydrostaticpressure and the syphonic effect of settling tank, the mud that is deposited in the settling tank bottom is picked up, discharges; And send in the revolving horizontal drum whizzer (2), accept processed; Be provided with annular collecting vat (17) on the top of settling tank, coming to produce overflow under the water extruding, can flow into water leg (17) automatically along the top mouth of settling tank shell through the sewage after the precipitation process; Through being located at the rising pipe (18) on the water leg (17), be sent in the permanent position water tank (7) in the measurement mixing unit again, accept the combination treatment of mixing flocculation agent;
Mud by sludge from sedimentation tank mouth (15) is discharged is sent in the revolving horizontal drum whizzer (2), by the high speed rotating of centrifugal basket, finishes solid and liquid separation in the mud; That separates that the back produces contains the mud liquid sewage, discharges from the water outlet of whizzer (2), and is sent back in the sewage header (4) by pipeline, prepares to accept precipitate and separate once more;
The solid dewatered sludge that the separation back produces forms mud cake, discharges from the discharge gate of whizzer (2), falls on the conveying belt of mud cake conveyer (1), is sent to storage place and keeps in, and prepares to accept ultimate disposal.
3, sewage purification and reuse process according to claim 1, it is characterized in that: described metering mixes (II) step and is: be preparation compound high-efficiency flocculating agent lysate, the even in proportion blending of flocculation agent lysate is advanced in the sewage, before mixing sewage, must be prepared into the flocculation agent lysate by lysate agitator (6); And then by adding the suitable proportion of volume pump (8) by the amount of disposing of sewage, lysate evenly is injected into continuously in the duct type mixing tank (9) of effluent stream warp, for the discharge of sewage of guaranteeing to handle has constant number, the flocculation agent lysate can be advanced in the sewage in even in proportion blending, in measurement mixing unit, designed permanent position water tank (7), remove the sewage that mud sump (3) is discharged from precipitation, all send in the permanent position water tank (7) by pipeline; Water outlet at permanent position water tank (7) has designed the dip hatch oralia, to carrying out the aperture metering from the effusive sewage of permanent position water tank (7).Sewage through the aperture metering is sent in the duct type mixing tank (9) by pipeline; Sewage is realized continuously uniform mixing in proportion with the flocculation agent lysate that is injected in the duct type mixing tank (9) when flowing through duct type mixing tank (9), and is sent in the air-flotation type separating reaction treater (10) in the separation purifier by pipeline.
4, sewage purification and reuse process according to claim 1, it is characterized in that: described isolation of purified (III) step is: in metering blended duct type mixing tank (9) blending the sewage of suitable proportion flocculation agent, enter Reaction Separation district (27) by sewage inlet pipe; Meanwhile, the liquid chlorine of pressurized air that air driven pump (40) produces and rotor chlorinating machine (39) filling, after dissolving is mixed into chloride pressurized air, enters pipe via gas and enter aerating pore scatterer (26), in the sewage that enters Reaction Separation district (27), discharge with the microbubble form; Enter the sewage of Reaction Separation district (27), absorption, flocculation through flocculation agent, after the combined reactions such as pollution treatment medicament scrubbing that the chemical reduction reaction of available chlorine, auxiliary balling iron (37) drop into are handled, all kinds of inorganic substance that contain in the sewage and the subparticle of organic substance, form air float body formula scum silica frost with microbubble or floc sedimentation, at the buoyancy float downward to residual air scum silica frost district (34); In scum silica frost district (34), scum silica frost is scraped in the scraper plate rotation of dregs scraper (30) and is swept down, discharges by the scum silica frost relief outlet, realizes solid/liquid separation; Scum silica frost after the separation is sent sewage header (4) back to by pipeline, and then sends into vertical-flow precipitation and remove mud sump (3), accepts mud-water separation again and handles; The residual air that produces in the combined reaction treating processes is compiled in the space on top, scum silica frost district (34), and is discharged by venting port; For the residual air of avoiding producing in the combined reaction treating processes has the chlorine-containing gas contaminate environment, there is chlorine residue Monitoring and Controlling instrument (31) to carry out Monitoring and Controlling in the venting port design; Enter the sewage of Reaction Separation district (27), after combined reaction is handled, realized that the sewage natural after the solid/liquid separation flows to the tank body below; In flow process by adsorption filtration district (25); In adsorption filtration district (25), design can further be removed and still contain the microactuator suspension fine particle in the sewage, impurity such as heavy metal ion by the adsorption filtration layer of being made up of filtrates such as gac, quartz sand, gravels.Sewage is cleaned into middle water after handling through adsorption filtration, enters and purifies water reserve (22); Discharge from water outlet then, send to and filter in the water reservoir (11), accept further purifying treatment again.
5, sewage purification and reuse process according to claim 4, it is characterized in that: the described middle water of from air-flotation type separate reactor (10), sending, flow in the transition water tank (49) of strumbox (48) through filter box water inlet pipe (50), wait to hold after the Man Zhongshui, into filtering basin overflow; Absorption through activated carbon adsorption layer (46), pass through the filtration of quartz sand filtration layer (45) and gravel packing again, impurity such as the hardly degraded organic substance that still contains in the water in removing out more completely, fine suspended particle, heavy metal ion, reach the reuse water standard, pass through filter box (48) rising pipe again and flow in the water storage box and save.
6, the equipment of sewage purification and reuse process according to claim 1 is characterized in that: described precipitation desilt I step adopts sewage header (4), vertical-flow precipitation to remove mud sump (31), revolving horizontal drum whizzer (2), (1) four processing unit of mud cake conveyer.
7, the equipment of sewage purification and reuse process according to claim 1 is characterized in that: described metering mixing II step adopts lysate agitator (6), adds volume pump (8), permanent position water tank (7), (9) four processing units of duct type mixing tank.
8, the equipment of sewage purification and reuse process according to claim 1 is characterized in that: described isolation of purified III step adopts air-flotation type separating reaction treater (10), filters (11) two processing units of water reservoir.
CN200810050471A 2008-03-13 2008-03-13 Sewage purification and reuse process and equipment thereof Pending CN101531424A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101891312A (en) * 2010-08-04 2010-11-24 中国水利水电第九工程局有限公司 Large manual sandstone factory wastewater treatment process
CN103723855A (en) * 2013-12-13 2014-04-16 云南中烟昆船瑞升科技有限公司 Pre-treatment technology for sewage produced during production of paper-making reconstituted tobaccos
CN108689502A (en) * 2018-07-27 2018-10-23 沈智奇 High-pressure filteration over-saturation dissolved oxygen effluent purification machine
CN111732280A (en) * 2020-06-30 2020-10-02 浙江通恒环保科技有限公司 Sewage purification process and equipment for producing green environment-friendly PET bottle flakes
CN112657938A (en) * 2020-12-04 2021-04-16 温州开玩贸易有限公司 Automatic surface rust removal treatment all-in-one machine for H-shaped steel
CN113041691A (en) * 2021-04-01 2021-06-29 郑州国研环保科技有限公司 Sludge press filtration water-saving flushing device
CN114349274A (en) * 2021-12-28 2022-04-15 张家港市清源水处理有限公司 Biochemical method sewage treatment system and sewage treatment method thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101891312A (en) * 2010-08-04 2010-11-24 中国水利水电第九工程局有限公司 Large manual sandstone factory wastewater treatment process
CN103723855A (en) * 2013-12-13 2014-04-16 云南中烟昆船瑞升科技有限公司 Pre-treatment technology for sewage produced during production of paper-making reconstituted tobaccos
CN108689502A (en) * 2018-07-27 2018-10-23 沈智奇 High-pressure filteration over-saturation dissolved oxygen effluent purification machine
CN111732280A (en) * 2020-06-30 2020-10-02 浙江通恒环保科技有限公司 Sewage purification process and equipment for producing green environment-friendly PET bottle flakes
CN112657938A (en) * 2020-12-04 2021-04-16 温州开玩贸易有限公司 Automatic surface rust removal treatment all-in-one machine for H-shaped steel
CN113041691A (en) * 2021-04-01 2021-06-29 郑州国研环保科技有限公司 Sludge press filtration water-saving flushing device
CN114349274A (en) * 2021-12-28 2022-04-15 张家港市清源水处理有限公司 Biochemical method sewage treatment system and sewage treatment method thereof
CN114349274B (en) * 2021-12-28 2024-03-19 张家港市清源水处理有限公司 Biochemical sewage treatment system and sewage treatment method thereof

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