CN101704621A - Integrated graywater treating method and system - Google Patents
Integrated graywater treating method and system Download PDFInfo
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- CN101704621A CN101704621A CN 200910250342 CN200910250342A CN101704621A CN 101704621 A CN101704621 A CN 101704621A CN 200910250342 CN200910250342 CN 200910250342 CN 200910250342 A CN200910250342 A CN 200910250342A CN 101704621 A CN101704621 A CN 101704621A
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Abstract
The invention belongs to the technical field of water treatment, and particularly relates to an integrated graywater treating method and a system. The integrated graywater treating method comprises the steps of collection and regulation, biological oxidation treatment and solid-liquid separation, flowing sand filtering advanced treatment and disinfection. In the invention, the living graywater with lower sewage concentration, such as waste water from showering and washing, waste water from kitchen and the like, is collected and reused for low-quality water-needing fields of toilet flushing, greening and the like in situ after being thoroughly purified, thus achieving the purposes of realizing recycling of water resources in a certain region, decreasing emission load of pollutants, and the like. The invention is characterize by compact process structure, small occupied area, convenient operation, simple management, low capital construction and running expenses, and the like.
Description
Technical field
The invention belongs to water-treatment technology field, be specifically related to a kind of integrated graywater treating method and system.
Background technology
Sanitary sewage is made up of buck and Heisui River, and buck is made up of shower waste, washes, kitchen waste water, and Heisui River is made up of the stool and urine and the water of flushing the toilet.From pollutant kind and quantity, the buck water yield accounts for 70～75% of whole sanitary sewages, but the total amount of pollutant only accounts for about 20% of sanitary sewage, and based on washing composition, suspended substance and organic matters pollutent, the common sanitary sewage of the concentration ratio of nitrogen and phosphorus is low to reduce 85% and 80%; The nitrogen in Heisui River, phosphorus etc. account for 80～90% of sanitary sewage total amount, are topmost pollutent sources.Traditional life sewage collecting and treatment system focus on buck and Heisui River mixed collection, discharging or reuse then, and receiving water body very easily causes the body eutrophication phenomenon; The construction of centralized sewerage system and maintenance cost height, pipe leakage causes groundwater pollution easily, and investment cost and operational and administrative expenses height, the energy consumption height; Nutritive substance in the Heisui River and trace element are the Natural fertilizers of plant-growth, but a large amount of energy of needs is removed it when sewage disposal, can't resource utilization; Sewage treatment systems is away from the residential area, and the cost height of reusing sewage is difficult to effective reuse.
Buck in the sanitary sewage is collected and advanced treatment on the spot, direct reuse not only reduces the difficulty and the cost of water treatment in flushing lavatory and greening etc., and can realize that supplying water in different qualities and use, reuse risk are little, required facility is few, has improved the utilising efficiency of water effectively; Advanced treatment unit adopts " environmental friendliness " technology of less energy-consumption, when considering the pollutent minimizing, realizes resource utilization, reaches the purpose of saving the energy.As for Heisui River, can be with its collection and treatment and recycling, as fermenting altogether with biologic garbage after the collections such as stool and urine and wash-down water, the no any heavy metal of material that becomes thoroughly decomposed can be directly used in city " green manure " or agricultural organic fertilizer.
The suspending carrier bio-reactor is integrated in same processing structures with oxygenolysis function and solid-liquid separation function, efficiently removes all contaminations by the bio-oxidation district; Directly realize mud-water separation through solid-liquid displacement zone again, SS and turbidity all can be reduced to very low level, have saved second pond, significantly reduce floor space; Water outlet can thoroughly be removed various suspension compositions after filtering fast, through guaranteeing the microbial safety and the water quality stability of reuse water after the simple sterilization, long-term reuse the water quality ANOMALOUS VARIATIONS can not occur or produce peculiar smell again.
Up to now, China does not still have processing and the reuse introduction of any patent at domestic grey water.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of integrated system and graywater treating method that is used for grey water handing and reuse is provided.The present invention is used for sub-district buck that the integrating device of grey water handing and reuse and graywater treating method be fit to different scales, hotel, holiday resort and away from the advanced treatment and the reuse of draining outside the low concentration wastewater of urban drainage pipe network residential district, the industrial enterprise.Buck described in the present invention is the sanitary sewage that derives from waste water compositions such as shower, washing and kitchen.
The present invention realizes above-mentioned technical purpose by following technique means:
The invention provides a kind of integrated graywater treating method, comprise and collect regulating step, bio-oxidation processing and solid-liquid separation step, mobile sand filtration treatment step and sterilisation step.
Described integrated grey water handing reuse method carries out in integrated grey water treatment system, and described integrated grey water treatment system is collected regulon, advanced treatment unit and reuse unit by buck and formed.
Preferable, described buck is collected regulon and is comprised grey water collection pipe net and equalizing tank; Described advanced treatment unit comprises suspending carrier bio-reactor and mobile sand-bed filter, and passes through pipe connection between described suspending carrier bio-reactor and the mobile sand-bed filter; The suspending carrier bio-reactor comprises bio-oxidation district and solid-liquid displacement zone, and described solid-liquid displacement zone is provided with clear water pipe, floating stuffing layer, back flushing blast main and shore pipe from top to bottom successively.
Preferably, be equipped with the suspending carrier filler in described bio-oxidation district and the solid-liquid displacement zone, being shaped as of described suspending carrier filler is spherical, column or other shape, and the particle diameter of described suspending carrier filler is 10～100mm; And the dosing rate of described bio-oxidation district inner suspension carrier is 40～60%, and the floating stuffing dosing rate of described solid-liquid displacement zone is 50～70%.
The implication of term " dosing rate " is: the volume that adds filler to bio-reactor accounts for the per-cent of whole reactor useful volume, and unit is %.
Preferably, described bio-oxidation district adopts microporous pipe or micropore dish aeration aerating, and described solid-liquid displacement zone adopts perforated pipe to carry out the air back flushing, and oxygenation and back flushing air derive from gas blower.
Described mobile sand filtration treatment step carries out in the continuous flow sand-bed filter, and wherein, described mobile sand-bed filter is a column, and its bottom is taper; Be provided with the sand-washing device of column in the mobile sand-bed filter; The inside of mobile sand-bed filter is filled with sand filter blanket; And the bottom of described mobile sand-bed filter is provided with into water water distributor, and described water inlet water distributor is connected with the rising pipe of suspending carrier bio-reactor; The ingress, bottom of described sand-washing device is connected with gas blower by inlet pipe, and the top of described sand-washing device is provided with receives sandpipe and wastewater discharge pipe; The top of described mobile sand-bed filter is connected with the reuse unit by the clear water pipe.
Preferable, described sand filter blanket is that quartz sand or other filter material of 0.6～1.1mm formed by particle diameter.
In use, described water inlet is entered by mobile sand-bed filter bottom, flows out from top through behind the layer of sand; The used air of sand-washing device derives from gas blower.Its detailed process is: solid-liquid displacement zone is passed through water inlet water distributor uniform water distribution through preliminary filtering water outlet, and it is upwards mobile along sand filter blanket, tiny suspended substance etc. is blocked in sand water contact process, and clear water passes and compiles on filter top behind the sand filter blanket and enter the reuse water unit by the gravity flow of clear water pipe.The molecule that quartz sand in the sand filter blanket is held back in the decline process is more and more, needs to clean.The bottom of sand-washing device is adjacent with the conical lower portion of sand-bed filter, and certain distance is arranged, and the inlet pipe of sand-washing device bottom links to each other by valve with gas blower, is used to the power of carrying quartz sand to clean.After opening inlet pipe and bubbling air, the quartz sand particle of the water of sand-bed filter bottom and adhesion suspended substance is along with the bubble that rises is brought in the rising tube of sand-washing device, here, sand, water, gas fully contact and the strong friction collision, the adherent suspended substance of quartz sand surface is eluted in the water, and sand grains becomes clean and recovers to filter retaining power.Come back to the surface of sand filter blanket through the clean quartz sand after cleaning by the receipts sandpipe at sand-washing device top, and the backwashing water that contains suspended substance is discharged by wastewater discharge pipe.Sand-bed filter is in reverse flow at operational process medium sand and water, and the quartz sand layer back flushing need not out of servicely, but in service automatically continuously, therefore greatly reduces work difficulty.
Described reuse unit comprises clean water basin and reuse water pump, and the clean water basin inlet adds sterilizing agent.
Further preferred, the integrated graywater treating method described in the present invention comprises following concrete steps:
1) collect regulating step: the buck of collection is by collecting pipe network, through collecting pipe network gravity flow or water pump lifting to the buck equalizing tank, in the buck equalizing tank, short stay, the water quality and the water yield all obtain adjusting to a certain degree, promote the unitary smooth running of subsequent disposal;
2) bio-oxidation is handled and solid-liquid separation step: after the water regulating pondage and water quality in the buck equalizing tank, enter integrated form suspending carrier bio-reactor, in this integrated form suspending carrier bio-reactor, carry out bio-oxidation processing and solid-liquid separation successively and handle;
3) mobile sand filtration treatment step: enter the continuous flow sand-bed filter through the water outlet that bio-oxidation is handled and solid-liquid separation is handled and further reduce SS and turbidity, its concrete steps are: from the water inlet water distributor uniform water distribution of the preliminary filtering water of solid-liquid displacement zone process by continuous flow sand-bed filter bottom, and it is upwards mobile along sand filter blanket, tiny suspended substance etc. is blocked in sand water contact process, and clear water passes and compiles on filter top behind the sand filter blanket and enter the reuse water unit by the gravity flow of clear water pipe;
4) sterilisation step: the water outlet of advanced treatment unit is killed wherein microorganism by adding sterilizing agent.
Preferably, the water inlet place of the buck equalizing tank in the described step 1) is provided with grid maker, and the inside of described equalizing tank is provided with the diving lift pump, and the water outlet place of described equalizing tank is provided with under meter; The effect of described grid maker is the large granular impurity of removing in the buck, and the effect of described diving lift pump is that the buck in the pond is sent into the subsequent disposal unit, and the effect of described under meter is the aquifer yield of the described equalizing tank of control.
Buck described in the present invention be meant that shower waste in the buildingss such as coming from residential district, hotel, holiday village, washes, kitchen waste water etc. are removed stool and urine and the water of flushing the toilet outside miscellaneous water.
Preferably, the bio-oxidation described step 2) is handled and is meant: buck is in the bio-oxidation district of integrated form suspending carrier bio-reactor, and the various reductive pollutants of buck are become CO by the microbiological oxidation on the floating stuffing
2And water, NH
3-N is NO by bio-oxidation
3-N.
Further preferred, the dissolved oxygen concentration (DO) of the waste water in the described bio-oxidation district is 1.5～4mg/L.
Preferably, described step 2) solid-liquid separation in is handled and is meant: the water outlet of handling through bio-oxidation from the bio-oxidation district is from the solid-liquid displacement zone that flows into integrated form suspending carrier bio-reactor, suspended substance is filtered and holds back in solid-liquid displacement zone, and clear water is discharged by rising pipe.
Further preferred, the bottom of described solid-liquid displacement zone is provided with air backwash tube and shore pipe, and wherein the air backwash tube is connected with gas blower by valve; After the water outlet SS value or the turbidity of solid-liquid displacement zone rises to a certain degree, is higher than 30mg/L as SS, open the valve of air backwash tube, utilize gas with at the bottom of the suspended substance flushing of holding back on the filler and being deposited to the pond, directly discharge by shore pipe again.
In the mobile sand filtration treatment step of described step 3), because the molecule that quartz sand is held back in the decline process is more and more, need to clean, concrete cleaning step is: the bottom of sand-washing device is adjacent with the conical lower portion of sand-bed filter, and certain distance arranged, inlet pipe has been arranged in the sand-washing device bottom, and inlet pipe links to each other by valve with gas blower, is used to provide the power of carrying quartz sand to clean.After opening inlet pipe and bubbling air, the quartz sand particle of the water of sand-bed filter bottom and adhesion suspended substance is along with the bubble that rises is brought in the rising tube of sand-washing device, here, sand, water, gas fully contact and the strong friction collision, the adherent suspended substance of quartz sand surface is eluted in the water, and sand grains becomes clean and recovers to filter retaining power.Be provided with on the top of sand-washing device and receive sandpipe and wastewater discharge pipe, come back to the sand filter blanket surface by receiving sandpipe, and the backwashing water that contains suspended substance is discharged by wastewater discharge pipe through the clean quartz sand after cleaning.Sand-bed filter quartz sand and water in operational process are in reverse flow, and the quartz sand layer back flushing need not out of service, but in service automatically continuously.
Preferably, the sterilizing agent described in the described step 5) can adopt clorox, liquid chlorine or dioxide peroxide, adds concentration and is no more than 10mg/L.
Described clean water basin are provided with outer conveying pump, and reuse water stops the back at clean water basin and gives various users by sending pump delivery outside.
The present invention also provides a kind of integrated grey water treatment system, this system comprises buck collection regulon, advanced treatment unit and the reuse unit that connects successively, it is characterized in that, described buck is collected regulon and is comprised grey water collection pipe net and equalizing tank, described advanced treatment unit comprises suspending carrier bio-reactor and mobile sand-bed filter, and described reuse unit comprises clean water basin and reuse water pump.
Preferable, described buck is collected regulon and is comprised water inlet pipe, equalizing tank and the grid maker that connects successively, and in addition, buck is collected regulon and also is provided with lift pump.
Preferable, described advanced treatment unit comprises integrated form suspending carrier bio-reactor and the mobile sand-bed filter that connects successively.
Preferably, described integrated form suspending carrier bio-reactor comprises flooding velocity meter, bio-oxidation district and the solid-liquid displacement zone that connects successively; Wherein, bottom, described bio-oxidation district is provided with microporous aeration device; The bottom of described solid-liquid displacement zone is provided with perforation back flushing blast main and shore pipe, and the top of described solid-liquid displacement zone is connected with mobile sand-bed filter by rising pipe.
Further preferred, the described integrating device that is used for grey water handing and reuse also is provided with gas blower, and described gas blower is used to bio-oxidation district and solid-liquid displacement zone that required air is provided.
Preferably, described mobile sand-bed filter is a column, and its bottom is taper; Described mobile sand-bed filter comprises sand filter blanket and sand-washing device; And the bottom of described mobile sand-bed filter is provided with into water water distributor, and the ingress, bottom of described sand-washing device is connected with gas blower by inlet pipe, is used to provide the power of washed-out sand; Described mobile sand-bed filter top is connected with the reuse unit by the clear water pipe, is used to collect and discharge clear water after filtering; The top of described sand-washing device is provided with receives sandpipe and wastewater discharge pipe, gets back to the upper strata of strainer through the sand after cleaning.
Preferably, described reuse water unit by clean water basin, sterilization mixing tank, sterilizing agent throwing device, send pump outside and the reuse water pipe is formed, wherein, described sterilization mixing tank and clear water pipe coupling, and be connected with the sterilizing agent throwing device; Described pump and the reuse water pipe coupling sent outside.
The purpose of patent of the present invention realizes by following approach: a kind of integrated grey water handing and reuse method are collected regulon, advanced treatment unit and reuse unit by buck and are formed.Buck is collected and regulon comprises grey water collection pipe net and equalizing tank; Advanced treatment unit is made up of suspending carrier bio-reactor and mobile sand-bed filter; The reuse unit is made up of clean water basin and reuse water pump, and three unit pass through pipe connection.
The collection tube host of buck to be used to collect shower waste in the buildingss such as residential district, hotel, holiday village, washes, kitchen waste water etc. various remove stool and urine and the water of flushing the toilet outside assorted draining, arrive the buck equalizing tank by pipe network gravity flow or water pump lifting, buck is short stay here, regulating pondage and water quality promote the smooth running of follow-up advanced treatment apparatus operation.The equalizing tank inlet is provided with grid maker.The diving lift pump also is set in the equalizing tank, the buck in the pond is sent into the subsequent disposal unit, it goes out streamflow and controls by under meter.
Advanced treatment unit is made up of suspending carrier bio-reactor and mobile sand-bed filter, and its function is to remove all contaminations of buck, reduces turbidity.The suspending carrier bio-reactor is divided into bio-oxidation district and solid-liquid displacement zone along water (flow) direction, separates by perforated retainer or barricade.Each district of bio-reactor all adds floating stuffing, and the shape of filler is various, and density and water are near, and dosing rate is 40～60%.The aerobic zone of suspending carrier bio-reactor is arranged micropore or boring aeration device, provides microorganism needed oxygen by gas blower, and control dissolved oxygen (DO) is generally 1.5～4mg/L, and the various reductive pollutants of buck are oxidized to CO
2And water, NH
3-N is NO by bio-oxidation
3-N.The water outlet of oxidation zone is from flowing into solid-liquid displacement zone, and suspended substance is filtered and holds back at this, and clear water is discharged by rising pipe.Air backwash tube and shore pipe are arranged in the bottom of solid-liquid displacement zone, and wherein the air backwash tube links to each other with gas blower by valve, and shore pipe joins by an arm and return line.After the water outlet SS of solid-liquid displacement zone or turbidity raise, open the valve of air backwash tube, utilize gas with at the bottom of the suspended substance flushing of holding back on the filler and being deposited to the pond, directly discharge by shore pipe again.
Also remaining a small amount of SS of solid-liquid displacement zone water outlet, need further reduce SS and turbidity by the mobile sand-bed filter of follow-up Continuous Flow. the sand-bed filter that flows is made up of filter material layer and sand-washing device, the water outlet of integrated form moving-burden bed reactor enters the bottom water distributor of the sand-bed filter that flows by pipeline self, water tiny suspended substance in uphill process is held back by quartz sand layer, clear water emits from the top of the sand-bed filter that flows. and the middle section at quartz sand layer is provided with inner sleeve, sleeve and filter bottom have certain spacing, the cover tube bottom is placed inlet pipe, being used to promote the sand water mixture. the suspended substance that the quartz sand layer of the sand-bed filter bottom of flowing is held back is maximum, need timely back flushing. by means of the air-lift unit effect of sleeve bottom inflow pipe, the quartz sand and the water of sand-bed filter bottom enter in the sleeve, and along with water flow rises, quartz sand in uphill process with gas, water etc. rub each other, collision etc., adherent suspended particle is stripped from gradually and is taken away with water, quartz sand is cleaned clean back enters sand-bed filter by pipeline layer of sand surface, continuing to participate in filtering a section dirt. the cleaning of the sand-bed filter quartz sand in operational process that flows is carried out continuously automatically, need not special back flushing. in normal operation and backwash process, quartz sand is in flow state all the time.
The water outlet of advanced treatment unit flows into clean water basin by pipeline, and mixing tank is installed on fresh water pipeline, is used to add sterilizing agent.Sterilizing agent can adopt clorox, liquid chlorine or dioxide peroxide etc., adds concentration and generally is no more than 10mg/L.Clean water basin are provided with outer conveying pump, and reuse water stays for some time the back by sending pump delivery outside to various users at clean water basin.
The present invention compared with the prior art, effect is actively and significantly, characteristic and advantage are as follows:
(1), oligosaprobic buck collection, processing and reuse are merged in same treatment system, the difficulty of processing is low, and investment cost is few.
(2), reuse water can be used for flushing the toilet, subdistrict greening, carwash and other are used mixedly, and can save 20%～40% the domestic water consumption and the commons water yield.
(3), on the basis of conventional suspending carrier bio-reactor integrated solid-liquid separation system, realize having reduced the function of depollution and solid-liquid separation floor space and saved capital cost at same structures, pollutant removal significantly improves.
(4), the sand-bed filter that adopt to flow removes suspended substance, reduces turbidity, need not back flushing, the buildings compactness is saved floor space, economic operating cost.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
Fig. 2 is an each processing unit synoptic diagram of the present invention.
Embodiment
Further describe technical scheme of the present invention below by specific embodiment.Should be understood that these embodiment only to be used to the present invention is described and be not used in and limit the scope of the invention.
The present invention collects regulon 1, advanced treatment unit 2 and reuse unit 3 by domestic grey water and forms. and buck is collected regulon and is made up of water inlet pipe 11, equalizing tank 12, grid maker 13 and lift pump 14; Advanced treatment unit comprises integrated form suspending carrier bio-reactor 21 and mobile sand-bed filter 22, suspending carrier bio-reactor 21 comprises flooding velocity meter 211, bio-oxidation district 212, solid-liquid displacement zone 213, the filler filling ratio of all placing in bio-reactor in 214, two zones of floating stuffing is respectively 40%～60% and 50%～70%; Be furnished with microporous aeration device 215 in bio-oxidation district 212; The bottom of solid-liquid displacement zone 213 is furnished with perforation back flushing blast main 216 and shore pipe 217 respectively; Solid-liquid displacement zone 213 tops set out water pipe 218, linking to each other with mobile sand-bed filter 22 by it. bio-oxidation district 212 and solid-liquid displacement zone 213 required air all derive from gas blower 4. mobile sand-bed filters 22 and are column, the bottom is tapered, comprising sand filter blanket 221 and sand-washing device 222 two portions. the bottom of the sand-bed filter 22 that flows is provided with into water water distributor 223, there is inlet pipe 224 ingress, bottom of sand-washing device 222, inlet pipe 224 links to each other with gas blower 4, is used to provide the power of washed-out sand; Clear water pipe 225 is arranged at mobile sand-bed filter top, being used to collect and discharging clear water after filtering and link to each other with reuse unit 3. the sandpipe 226 of receipts and wastewater discharge pipe 227 are arranged at the top of sand-washing device 222, receive sandpipe 226 and get back to the upper strata of strainer 22. reuse water unit 3 by clean water basin 31, sterilization mixing tank 32, sterilizing agent throwing device 33, send pump 34 outside and form with reuse water pipe 35. the mixing tank 31 of sterilizing links to each other with clear water pipe 225, and links to each other with sterilizing agent throwing device 33; Sending pump 34 outside links to each other with reuse water pipe 35.
The domestic grey water of sub-district, hotel or holiday village is by collecting the water inlet pipe 11 that pipe network imports grey water treatment system, enter equalizing tank 12, the front portion of equalizing tank is provided with grid maker 13, remove various floating matters, paper, hair, plastics bag etc., equalizing tank 12 is mainly used in regulates the water yield that enters buck, to guarantee whole grey water treatment system steady running.The outlet of equalizing tank has lift pump 14, provides sewage by it to advanced treatment unit 2.
Advanced treatment unit 2 is made up of integrated form suspending carrier bio-reactor 21 and mobile sand-bed filter 22.
The flooding velocity meter 211 of integrated form suspending carrier bio-reactor 21 is used to regulate and control the flooding quantity of entire depth processing unit.Floating stuffings 214 are placed in bio-oxidation district 212, and dosing rate is 40～60%, are used for the various microorganisms of apposition growth, and keep certain biomass, remove the various reductive pollutants of buck, comprise BOD
5, washing composition (LAS) and An Dan Alto.Bio-oxidation district 212 also arranges microporous aeration device 215, and by gas blower 4 oxygen supply in water, metabolism and the growth of satisfying microorganism are required, and the DO control in bio-oxidation district is generally 1.5～4mg/L.The water of handling through bio-oxidation enters solid-liquid displacement zone 213.Solid-liquid displacement zone lays out water pipe 218, floating stuffing layer 214, back flushing blast main 216 and shore pipe 217 from top to bottom respectively.Big suspended particle, the microbial film that comes off etc. were blocked when packing layer passed here from bottom to top in the bio-oxidation district, and clear water enters in the sand-bed filter 22 that flows by rising pipe 218.The suspended particle of floating stuffing layer 214 and microbial film accumulation increase gradually, when running up to a certain degree, open the valve of the back flushing blast main 216 of solid-liquid displacement zone bottom, utilize the air of gas blower 4 that the floating stuffing layer is carried out back flushing, open the valve of shore pipe 217 then, with the normal operation in counter-flushing liquid discharging back.
The sand filter 22 that flows comprises sand filter blanket 221 and sand-washing device 222 two portions, pass through water inlet water distributor 223 uniform water distributions of sand-bed filter bottom through preliminary filtering water from solid-liquid displacement zone, and it is upwards mobile along sand filter blanket 221, tiny suspended substance etc. is blocked in sand water contact process, and clear water passes and compiles on filter top behind the sand filter blanket and enter reuse water unit 3 by 225 gravity flows of clear water pipe.The molecule that quartz sand is held back in the decline process is more and more, needs to clean.The conical lower portion of the bottom of sand-washing device 222 and sand-bed filter 22 is adjacent, and certain distance is arranged, and inlet pipe 224 has been arranged in sand-washing device bottom, and inlet pipe and gas blower 4 link to each other by valve, are used to carry the power of quartz sand cleaning.After opening inlet pipe and passing through air, the quartz sand particle of the water of sand-bed filter 22 bottoms and adhesion suspended substance is along with the bubble that rises is brought in the rising tube of sand-washing device 222, here, sand, water, gas fully contact and the strong friction collision, the adherent suspended substance of quartz sand surface is eluted in the water, and sand grains becomes clean and recovers to filter retaining power.Be provided with receipts sandpipe 226 and wastewater discharge pipe 227 on the top of sand-washing device 222, come back to the sand filter blanket surface by receiving sandpipe 226 through the clean quartz sand after cleaning.And the backwashing water that contains suspended substance is discharged by wastewater discharge pipe 227.Sand-bed filter is in reverse flow at operational process medium sand and water, and the quartz sand layer back flushing need not out of service, but in service automatically continuously.Like this, greatly reduce work difficulty.
Most pollutents of sand filter water outlet are thoroughly removed, and only have microbe population to exceed standard.For this reason, the filter tank water outlet was connected with sterilization mixing tank 32 earlier before entering clean water basin 31, chlorine is that sterilizing agent passes through the needed dosage of throwing device 33 adding killing microorganisms, enter clean water basin 31 then, clear water is connected with user terminal with reuse water pipe 35 by sending pump 34 outside after stopping several hrs here again, realizes that buck purifies the purpose of back reuse.
Embodiment:
Buck, the NH of water inlet are used mixedly in all shower, washing and the kitchen etc. of adopting present method to handle certain buildings
3-N is 20～35mg/L, COD
CrBe 200～350mg/l, TP is 3～8mg/L, and SS is 140～300mg/L, and LAS is 8～25mg/L, and the water outlet after the processing can reach NH
3-N is lower than 5mg/L, COD
CrBe 40mg/L, TN is less than 20mg/L, and SS is less than 5mg/L, and LAS is less than 0.8mg/L, and turbidity is lower than 1.0NTU, and total bacterial count is less than 10
2Individual/mL, E.coli does not detect.Reuse water is directly used in water closet flushing, greening and the carwash etc. of buildings.
After purifying through the present invention, the outer draining of the domestic grey water of biotope, low concentration sewage, trade effluent can reach the relevant reuse standard of country.
Claims (10)
1. integrated graywater treating method, this method comprise collect regulating step, bio-oxidation and solid-liquid separation step, sand filtration treatment step and sterilisation step flow.
2. the integrated graywater treating method described in claim 1, it is characterized in that, described integrated graywater treating method carries out in integrated grey water treatment system, and described integrated grey water treatment system is collected regulon, advanced treatment unit and reuse unit by buck and formed.
3. the integrated graywater treating method described in claim 2, it is characterized in that, described buck is collected regulon and is comprised grey water collection pipe net and equalizing tank, described advanced treatment unit comprises suspending carrier bio-reactor and mobile sand-bed filter, and pass through pipe connection between described suspending carrier bio-reactor and the mobile sand-bed filter, wherein, described suspending carrier bio-reactor comprises bio-oxidation district and solid-liquid displacement zone, and is equipped with the suspending carrier filler in described bio-oxidation district and the solid-liquid displacement zone.
4. the integrated graywater treating method described in claim 3, it is characterized in that, the particle diameter of described suspending carrier filler is 10～100mm, and the dosing rate of described bio-oxidation district inner suspension carrier filler is 40～60%, and the dosing rate of the suspending carrier filler of described solid-liquid displacement zone is 50～70%.
5. the integrated graywater treating method described in claim 3 is characterized in that, described bio-oxidation district adopts microporous pipe or micropore dish aeration aerating; Described solid-liquid displacement zone adopts perforated pipe to carry out the air back flushing, and oxygenation and back flushing air derive from gas blower; And described solid-liquid displacement zone is provided with clear water pipe, floating stuffing layer, back flushing blast main and shore pipe from top to bottom successively.
6. the integrated graywater treating method described in claim 2 is characterized in that, described continuous flow sand-bed filter is a column, and its bottom is taper; The sand-bed filter that should flow comprises sand filter blanket and sand-washing device; And the bottom of described mobile sand-bed filter is provided with into water water distributor, and the ingress, bottom of described sand-washing device is connected with gas blower by inlet pipe; Described mobile sand-bed filter top is connected with the reuse unit by the clear water pipe; The top of described sand-washing device is provided with receives sandpipe and wastewater discharge pipe, and described receipts sandpipe is got back to the upper strata of sand filter blanket.
7. the integrated graywater treating method described in claim 2 is characterized in that, described reuse unit comprises clean water basin and reuse water pump, and the clean water basin inlet adds sterilizing agent.
8. the integrated graywater treating method described in claim 1 is characterized in that, described integrated graywater treating method comprises the steps:
1) buck of Shou Jiing through collecting pipe network gravity flow or water pump lifting to the buck equalizing tank, stops regulating pondage and water quality by collecting pipe network in the buck equalizing tank;
2) after the water yield and water quality regulation in the buck equalizing tank, enter integrated form suspending carrier bio-reactor, in this integrated form suspending carrier bio-reactor, carry out bio-oxidation and solid-liquid separation successively and handle;
3) enter the continuous flow sand-bed filter through the water outlet that bio-oxidation is handled and solid-liquid separation is handled and further reduce SS and turbidity, its concrete steps are: from the water inlet water distributor uniform water distribution of the preliminary filtering water of solid-liquid displacement zone process by continuous flow sand-bed filter bottom, and it is upwards mobile along sand filter blanket, tiny suspended substance etc. is blocked in sand water contact process, and clear water passes and compiles on filter top behind the sand filter blanket and enter the reuse water unit by the gravity flow of clear water pipe;
4) water outlet of advanced treatment unit is killed wherein microorganism by adding sterilizing agent.
9. as arbitrary described integrated graywater treating method in the claim 1～8, it is characterized in that described buck derives from the sewage of low concentration of waste water compositions such as shower, washing and kitchen.
10. integrated grey water treatment system, this system comprises buck collection regulon, advanced treatment unit and the reuse unit that connects successively, it is characterized in that, described buck is collected regulon and is comprised grey water collection pipe net and equalizing tank, described advanced treatment unit comprises suspending carrier bio-reactor and mobile sand-bed filter, and described reuse unit comprises clean water basin and reuse water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910250342 CN101704621B (en) | 2009-12-04 | 2009-12-04 | Integrated graywater treating method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910250342 CN101704621B (en) | 2009-12-04 | 2009-12-04 | Integrated graywater treating method and system |
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| Publication Number | Publication Date |
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| CN101704621A true CN101704621A (en) | 2010-05-12 |
| CN101704621B CN101704621B (en) | 2013-06-26 |
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| CN 200910250342 Expired - Fee Related CN101704621B (en) | 2009-12-04 | 2009-12-04 | Integrated graywater treating method and system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111333274A (en) * | 2020-03-27 | 2020-06-26 | 北京建筑大学 | Rural sewage strengthening and quality-grading integrated and recycling treatment device and method |
| CN111362508A (en) * | 2020-03-20 | 2020-07-03 | 中国科学院生态环境研究中心 | Quality-based synergistic in-situ sewage treatment method and process |
| WO2020155883A1 (en) * | 2019-01-29 | 2020-08-06 | 中车长春轨道客车股份有限公司 | Multiple unit train toilet greywater reuse device |
| CN114853275A (en) * | 2022-05-07 | 2022-08-05 | 福建玉池环境科技有限公司 | Disc type precise biological filter bed |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2372311Y (en) * | 1999-04-29 | 2000-04-05 | 杨建平 | Waste water treatment device |
| CN2491448Y (en) * | 2000-12-26 | 2002-05-15 | 牟玉昌 | Sewage, water water circulating and purifying installation |
| CN2682071Y (en) * | 2004-04-01 | 2005-03-02 | 北京市劳动保护科学研究所 | Novel ash-water separation apparatus |
-
2009
- 2009-12-04 CN CN 200910250342 patent/CN101704621B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020155883A1 (en) * | 2019-01-29 | 2020-08-06 | 中车长春轨道客车股份有限公司 | Multiple unit train toilet greywater reuse device |
| CN111362508A (en) * | 2020-03-20 | 2020-07-03 | 中国科学院生态环境研究中心 | Quality-based synergistic in-situ sewage treatment method and process |
| CN111333274A (en) * | 2020-03-27 | 2020-06-26 | 北京建筑大学 | Rural sewage strengthening and quality-grading integrated and recycling treatment device and method |
| CN114853275A (en) * | 2022-05-07 | 2022-08-05 | 福建玉池环境科技有限公司 | Disc type precise biological filter bed |
| CN114853275B (en) * | 2022-05-07 | 2024-05-14 | 福建玉池环境科技有限公司 | Disc type precise biological filter bed |
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|---|---|
| CN101704621B (en) | 2013-06-26 |
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