CN100471801C - Domestic sewage resource treatment process and device with zero discharge of biological sludge - Google Patents
Domestic sewage resource treatment process and device with zero discharge of biological sludge Download PDFInfo
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- CN100471801C CN100471801C CNB2007100268674A CN200710026867A CN100471801C CN 100471801 C CN100471801 C CN 100471801C CN B2007100268674 A CNB2007100268674 A CN B2007100268674A CN 200710026867 A CN200710026867 A CN 200710026867A CN 100471801 C CN100471801 C CN 100471801C
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
This invention relates to a process technology for resourcedizing life sewage, in which, a sewage pump lifts sewage to a sand deposition basin for eliminating sand and suspending particles, a first and second level aeration bio-film reaction basin realizes degradation of organic materials and nitration of ammonia nitrogen and reduces mud by optimizing the growing period and environment of microbes, a quartz sand filter basin eliminates suspended substances in the second level aeration biofilm reaction basin, an active carbon filter eliminates perculiar smell and chroma so as to reduce concentration of organics and suspended materials, a disinfection system system controls target of microbes and a mid-water basin stores the processed mid-water, which integrates the first and second levels of aeration bio-film reaction basin, the quartz sand filter basin and an active carbon basin to reduce occupied areas.
Description
Technical field
The invention belongs to sewage disposal technology, particularly a kind of domestic sewage resource treatment process of zero discharge of biological sludge.The invention still further relates to a kind of treatment unit that adopts this technology.
Background technology
In recent years, along with the increase of population and the fast development of economic society, shortage of water resources has become the subject matter of serious obstruction Economic development in a lot of areas, directly influence the Sustainable development of China's economic society.Sewage recycling is an effective way of alleviating water resources crisis, and the method for sewage recycling is broadly divided at present: biological process, physico-chemical processes and embrane method three major types.Biological treatment is the low-cost sewage disposal technology of generally admitting, but biological process common limitation is to produce excess sludge, need carry out subsequent disposal to excess sludge.According to statistics, in the initial cost or running cost of Sewage Plant, the expense that the excess sludge treating processes takes place accounts for nearly 30% of total expenses.At present, also do not work out more economic method about the disposal of excess sludge, the mud problem becomes a great problem of puzzlement Sewage Plant.
Under this situation, the mud decrement Study on Technology becomes new focus.Mud decrement is the new ideas to the excess sludge treatment and disposal that propose the nineties in 20th century.Different with reducing sludge volume, decrement during traditional sludge is handled, traditional sludge treatment comprises the dehydration and the stabilization of mud, though the volume of mud and the organism that is comprised also obtain reducing, but its purpose is for follow-up ultimate disposal creates conditions after all, can be regarded as the pre-treatment of sludge ultimate disposal.And sludge reduction is on the basis of prior biological treatment system, by the productive rate of means such as physics, chemistry, biology reduction mud, reduces the biomass of the outside discharging of whole biosystem.After treatment, avoided disposal to decrement part mud, thus sludge reduction can to regard as be the integrated of sludge treatment and disposal process.Before mud adopted traditional method of disposal, process thickening earlier reduced volume to make things convenient for the transportation of mud.And implement the disposal process that sludge reduction process can be avoided mud, technology and all be better than traditional mud economically.
Summary of the invention
First purpose of the present invention is exactly the deficiency at present technology, and the domestic sewage resource treatment process that does not produce excess sludge, no stink, processing technological flow is simple and cost is low zero discharge of biological sludge after a kind of sewage disposal is provided.
Second purpose of the present invention provides a kind of zero discharge of biological sludge domestic sewage resource treatment unit that is suitable for above-mentioned technology.
For realizing first goal of the invention, sewage disposal flow process of the present invention is:
(1) sewage enters settling pit through promoting pumping plant, treats the removal of silt and suspended particle post precipitation;
(2) enter interior Packed one-level aeration biomembrane reaction tank from the bottom with the force (forcing) pump pressurization;
(3) filler secondary aeration biomembrane reaction tank is arranged in entering by one-level aeration biomembrane reaction tank top water outlet;
(4) enter the quartz sand filter tank by secondary aeration biomembrane reaction tank top water outlet;
(5) enter activated carbon filter top by bottom, quartz sand filter tank through U type pipe;
(6) sterilisation system of flowing through;
(7) flowing to middle pond finishes;
In described flow process, have air pump by aeration head in one-level, secondary aeration biomembrane reaction tank and quartz sand, activated carbon filter bottom aeration upwards; The therefrom pond upwards recoil from the bottom to quartz sand and activated carbon filter of drawing water respectively of backwashing pump is arranged; Quartz sand and activated carbon filter have pipeline to one-level aeration biomembrane reaction tank recoil draining.
The aeration rate of described one-level, secondary aeration biomembrane reaction tank is according to successively decreasing along water (flow) direction, and the aeration rate ratio is 3～4:1; Quartz sand and activated carbon filter be aeration when back flushing only, forms combined water and air backwash, improves backwash effect.
Be suitable for the zero discharge of biological sludge domestic sewage resource treatment unit of above-mentioned technology, include settling pit, interior Packed one-level, secondary aeration biomembrane reaction tank, quartz sand filter tank, activated carbon filter, ultraviolet ray disinfecting system and middle pond that pipeline or aperture are communicated with successively, have air pump to be communicated with respectively to be installed in the aeration head of one-level, secondary aeration biomembrane reaction tank and quartz sand, activated carbon filter bottom; There is the backwashing pump water inlet pipe to connect middle pond, rising pipe and is in quartz sand and activated carbon filter bottom respectively; Quartz sand and activated carbon filter have pipeline to lead to one-level aeration biomembrane reaction tank.
The invention has the beneficial effects as follows: there is the halfway residual amount microorganism of degraded in the water outlet of aeration biomembrane reaction tank, behind input sand filtration and activated carbon filter, be trapped, the residual amount microorganism that to hold back by filter back washing is back to the feed-water end of aeration biomembrane reaction tank, be recycled and handle as the carbon source of microorganism, residual amount microorganism is fully degraded, realize the zero release of biological sludge, make whole process no longer produce excess sludge; Effluent reuse in pouring greening, clean road, flush the toilet and purposes such as carwash.Again because sewage disposal handling after finishing through stink, so improve the Working environment of sewage disposal effectively, also can avoid influence effectively to the surrounding enviroment facility, make sewage treatment facility can build in the nearer residential area and public building of distance crowd, solved the bottleneck problem of building the sewage recycling facility in residential area and the public building; Also, shortened techniqueflow, saved mud and concentrated and the sludge treatment structures, reduced construction costs and day-to-day operation expense because the gallery separation structure that adopts in the aeration biomembrane reaction tank can be separated the microorganism living environment and optimize effectively.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is processing technological flow figure of the present invention.
Fig. 2 is an integral type treatment unit schematic top plan view of the present invention.
Fig. 3 is the A-A line diagrammatic cross-section along Fig. 2.
Fig. 4 is the B-B line diagrammatic cross-section along Fig. 2.
1. one-level aeration biomembrane reaction tank, 2. secondary aeration biomembrane reaction tank, 3. activated carbon filters among the figure, 4. quartz sand filter tank, 5. one-level aeration biomembrane reaction tank water outlet, 6. secondary aeration biomembrane reaction tank water outlet, 7. filler, 8. aeration tank air pump, 9. backwashing pump, 10. aeration head, 11. the back flushing air pump, 12. force (forcing) pumps, 13. blow-down pipes, 14.U the type pipe, 15 ultraviolet disinfection lamps.
Embodiment
With reference to Fig. 1 process flow sheet of the present invention, the sewage disposal flow process of the embodiment of the invention is:
(1) sewage enters settling pit through promoting pumping plant, treats the removal of silt and suspended particle post precipitation;
(2) enter interior Packed one-level aeration biomembrane reaction tank from the bottom with the force (forcing) pump pressurization;
(3) filler secondary aeration biomembrane reaction tank is arranged in entering by one-level aeration biomembrane reaction tank top water outlet;
(4) enter the quartz sand filter tank by secondary aeration biomembrane reaction tank top water outlet;
(5) enter activated carbon filter top by bottom, quartz sand filter tank through U type pipe;
(6) sterilisation system of flowing through;
(7) flowing to middle pond finishes;
In described flow process, have adopt gas blower by aeration head in one-level, secondary aeration biomembrane reaction tank and quartz sand, activated carbon filter bottom aeration upwards; The therefrom pond upwards recoil from the bottom to quartz sand and activated carbon filter of drawing water respectively of backwashing pump is arranged; Quartz sand and activated carbon filter are again all to one-level aeration biomembrane reaction tank recoil draining.
Technology of the present invention at first promotes sewage by lift pump, the sewage after the lifting enters settling pit, treats the removal of silt and suspended particle post precipitation, and the sewage in settling pit plays certain acidication effect to organism; Sewage in settling pit flows into one-level aeration biomembrane reaction tank and secondary aeration biomembrane reaction tank successively then, remove the organism in the water, form by the aerating system and the bio-carrier of independent control aeration rate in the pond, aerating system is positioned at the bottom, pond, by gas blower air feed (air), adopt the aeration biomembrane reaction tank of gallery separation structure, this gallery separation structure can be separated the microorganism living environment and optimize effectively, the microorganism in different activities cycle is in respectively in the different environment, optimize increased logarithmic phase and improved removal effect of organic matter, optimize decline phase and reduced the residual amount of microorganism; Wherein, separating for this gallery structurally is to be thin-and-long along water (flow) direction, and is divided into 3 sections (or more multistage) along water (flow) direction, is made up of the aerating system and the bio-carrier of independent control aeration rate in every section, aerating system is positioned at the bottom, pond, adopts gas blower air feed (air); Sewage flows to the filter tank from the water outlet of aeration biomembrane reaction tank afterwards, the filter tank mainly is to hold back residual amount microorganism by sand filtration and granulated active carbon, quartz sand filter tank suspended substance, organism and the ash content that removes in the water outlet of secondary aeration biomembrane reaction tank, hold back remaining microorganism, the activated carbon filter main purpose is to remove peculiar smell and colourity, and further reduces organism and concentration of suspension; And the collection by filter back washing water refluxes, and is recycled to one-level aeration biomembrane reaction tank feed-water end, and microorganism wherein and organism are taken as the carbon source recycling and degraded is removed; Entering ultraviolet ray disinfecting system at last again carries out disinfection.
Ultraviolet ray disinfecting system is used to control the microbiological indicator of treat effluent, and middle pond is used for storing the middle water after the processing; Wherein in the process of sewage disposal, may there be the residual completely amount microorganism of degraded in the water outlet of aeration biomembrane reaction tank, behind input sand filtration and activated carbon filter, be trapped, the residual amount microorganism that to hold back by back flushing is back to the feed-water end of aeration biomembrane reaction tank, residual amount microorganism is recycled as microbe carbon source and handles, realize the zero release of biological sludge, make whole process no longer produce excess sludge, just can realize the recycling of sanitary sewage, the sanitary sewage after these can being handled is used for the pouring greening, clean road, flush the toilet and purposes such as carwash.
Because the mud that biological treatment process produces mainly is microorganism body and its adsorbed organic matter, organism wherein can be used as carbon source and use, and can organism be returned treatment system once more by going out the mode that water filtration and backwashing water reflux.Even be difficult for biodegradable organism, by in intrasystem circular treatment repeatedly, removal gradually also can be decomposed.Finally, have only not biodegradable inorganic ash content to remain in the reactive system.Because ash oontent is seldom, can reach certain hour in system's operation, ashes accumulate is concentrated cleaning more for a long time, perhaps clears up when system's regular maintenance.Do not need to clear up ash content at ordinary times, do not need to discharge biological sludge, realized the zero release of biological sludge.
Be suitable for the zero discharge of biological sludge domestic sewage resource treatment unit of above-mentioned technology, include settling pit, interior Packed one-level, secondary aeration biomembrane reaction tank, quartz sand filter tank, activated carbon filter, ultraviolet ray disinfecting system and middle pond that pipeline or aperture are communicated with successively, have air pump to be communicated with respectively to be installed in the aeration head of one-level, secondary aeration biomembrane reaction tank and quartz sand, activated carbon filter bottom; There is the backwashing pump water inlet pipe to connect middle pond, rising pipe and is in quartz sand and activated carbon filter bottom respectively; Quartz sand and activated carbon filter have pipeline to lead to one-level aeration biomembrane reaction tank.
The treatment unit specific embodiment of integral type is shown in Fig. 2,3,4, be three layers of tubular, there is space bar that internal layer cylinder is separated into quartz sand, activated carbon filter, and a side of the secondary aeration biomembrane reaction tank 2 ring tube in outer field one-level aeration biomembrane reaction tank 1 and middle layer separated, promptly the cylinder shape reaction tank is told end to end and can not be circulated in the pond; Aeration head 10 is up all arranged at each bottom, pond, in one-level, the secondary aeration biomembrane reaction tank filler 7 is arranged; A side of space bar has the water outlet 5 of one-level aeration biomembrane reaction tank to secondary aeration biomembrane reaction tank above the barrel of middle layer, the opposite side of space bar has the water outlet 6 of secondary aeration biomembrane reaction tank to the quartz sand filter tank above the internal layer barrel, the top of U type pipe 14 UNICOMs to activated carbon filter 3 is arranged at 4 bottoms, quartz sand filter tank, ultraviolet disinfection lamp 15 is equipped with in the ingress of U type pipe, and the top of quartz sand, activated carbon filter has pipe to be communicated to one-level aeration biomembrane reaction tank; Aeration pump 8, recoil water pump 9, recoil air pump 11 and sewage force (forcing) pump 12 are installed below three layers of tube, the bottom that exports one-level aeration biomembrane reaction tank to of sewage force (forcing) pump 12, the aeration head 10 that exports one-level, secondary aeration biomembrane reaction tank to of aeration pump 8, the aeration head that exports quartz sand, activated carbon filter to 10 of recoil air pump 11, the bottom that exports quartz sand, activated carbon filter to of recoil water pump 9, blow-down pipe 13 also is equipped with in the bottom in each pond.
Wherein, it is that structure upper edge water (flow) direction is thin-and-long that the gallery in the foregoing description is separated, and is divided into 3 lattice along water (flow) direction; And every lattice are made up of the aerating system and the bio-carrier of independent control aeration rate.
One-level aeration biomembrane reaction tank is positioned at the outermost layer of equipment, secondary aeration biomembrane reaction tank is positioned at the middle layer of equipment, sewage is through entering one-level aeration biomembrane reaction tank 1 after by equipment bottom force (forcing) pump 11 pressurization behind the primary deposition, enter secondary aeration biomembrane reaction tank 2 by top water outlet 5 then, enter the filtering layer of sewage by forming of aeration biomembrane reaction tank, perch the microbial film that forms by microorganism what filling surface formed by filler 7.In the sewage biomembranous while of process, air pump 8 air supplies by the equipment bottom, and carry out aeration to filler by aeration head 10, air contacts in opposite directions by rising on the gap of filler 7 with dirty sewage, airborne oxygen is transferred in the sewage, and the microorganism on microbial film provides sufficient dissolved oxygen and abundant organism.Under effect under the metabolism of microorganism, organic pollutant is degraded.
The quartz sand filter tank is positioned at a side of equipment innermost layer, with the suspended substance that removes in 2 water outlets of secondary aeration biomembrane reaction tank; Activated carbon filter, the opposite side main purpose that is positioned at the equipment innermost layer are to remove peculiar smell and colourity, and further reduce organism and concentration of suspension; Ultraviolet ray disinfecting system is used to control the microbiological indicator of treat effluent; All adopt air-water backwashing when activated carbon filter 3 and sand filter 4 back flushinges, at first the air of supplying with elevated pressures by air pump 11 carries out back flushing, backwashing pump 9 startups behind the certain hour are promoted to activated carbon filter 3 with the water in the middle pond or sand filter 4 carries out back flushing.The back flushing water outlet of activated carbon filter 3 and sand filter 4 enters one-level aeration biomembrane reaction tank through the rising pipe on top separately and handles again.
When turnaround of unit or out of service etc. needed emptying, the blow-down pipe 13 of opening device bottom entered the municipal drainage pipe network with sewage.The water that comes out from activated carbon filter just can be transported to and be used in addition storing the middle pond of handling water the back, just can be used for pouring greening, cleaning road, flush the toilet and purposes such as carwash.
Integration apparatus of the present invention, outward appearance are right cylinder, and are divided into three layer of four part from outside to inside, outermost layer is an one-level aeration biomembrane reaction tank 1, and the middle layer is a secondary aeration biomembrane reaction tank 2, and innermost layer divides two portions, one side is an activated carbon filter 3, and opposite side is a sand filter 4.Sanitary sewage is promoted to settling pit by sanitary sewage/lift pump, removes silt and suspended particle, and organism is played certain acidication effect; Sewage is through entering one-level aeration biomembrane reaction tank 1 after by equipment bottom force (forcing) pump 12 pressurization behind the primary deposition, enter secondary aeration biomembrane reaction tank 2 by top water outlet 5 then, enter the filtering layer of sewage by forming of aeration biomembrane reaction tank, perch the microbial film that forms by microorganism what filling surface formed by filler 7.In the sewage biomembranous while of process, air pump 8 air supplies by the equipment bottom, and carry out aeration to filler by aeration head 10, air contacts in opposite directions by rising on the gap of filler 7 with dirty sewage, airborne oxygen is transferred in the sewage, and the microorganism on microbial film provides sufficient dissolved oxygen and abundant organism.Under effect under the metabolism of microorganism, organic pollutant is degraded.Enter sand filter 4 by top water outlet 6 again, the sewage that enters sand filter 4 is the filtering layer by being made up of quartz sand from top to bottom, the suspended substance in the removal aeration tank biomembrane reaction pond water outlet.The water outlet of sand filter 4 bottoms enters the top of the activated carbon filter 3 of opposite side by U type pipe, removes peculiar smell and colourity, and further reduces organism and concentration of suspension.All adopt air-water backwashing when activated carbon filter 3 and sand filter 4 back flushinges, at first the air of supplying with elevated pressures by air pump 11 carries out back flushing, backwashing pump 9 startups behind the certain hour are promoted to activated carbon filter 3 with the water in the middle pond or sand filter 4 carries out back flushing.The back flushing water outlet of activated carbon filter 3 and sand filter 4 enters one-level aeration biomembrane reaction tank through the rising pipe on top separately and handles again.
Claims (4)
1, a kind of zero discharge of biological sludge domestic sewage resource treatment process, treatment scheme may further comprise the steps:
(1) sewage enters settling pit through promoting pumping plant, treats the removal of silt and suspended particle post precipitation;
(2) enter interior Packed one-level aeration biomembrane reaction tank from the bottom with the force (forcing) pump pressurization;
(3) enter interior Packed secondary aeration biomembrane reaction tank by one-level aeration biomembrane reaction tank top water outlet;
(4) enter the quartz sand filter tank by secondary aeration biomembrane reaction tank top water outlet;
(5) enter activated carbon filter top by bottom, quartz sand filter tank through U type pipe;
(6) sterilisation system of flowing through;
(7) flow to middle pond, finish;
In described flow process, have air pump by aeration head in one-level, secondary aeration biomembrane reaction tank and quartz sand, activated carbon filter bottom aeration upwards; There is backwashing pump therefrom to draw water respectively from quartz sand and the upwards recoil of activated carbon filter bottom in the pond; Quartz sand and activated carbon filter are again all to one-level aeration biomembrane reaction tank discharging recoil draining.
2, zero discharge of biological sludge domestic sewage resource treatment process according to claim 1 is characterized in that: the aeration rate of described one-level, secondary aeration biomembrane reaction tank successively decreases along water (flow) direction, and the aeration rate ratio is 3～4:1; Quartz sand and activated carbon filter be aeration when back flushing only, forms combined water and air backwash, improves backwash effect.
3, be suitable for the device of the described zero discharge of biological sludge domestic sewage resource treatment process of claim 1, it is characterized in that: include settling pit, interior Packed one-level, secondary aeration biomembrane reaction tank, quartz sand filter tank, activated carbon filter, ultraviolet ray disinfecting system and middle pond that pipeline or aperture are communicated with successively, have air pump to be communicated with respectively to be installed in the aeration head of one-level, secondary aeration biomembrane reaction tank and quartz sand, activated carbon filter bottom; There is the backwashing pump water inlet pipe to connect middle pond, rising pipe and is in quartz sand and activated carbon filter bottom respectively; Quartz sand and activated carbon filter have pipeline to lead to one-level aeration biomembrane reaction tank.
4, the device of zero discharge of biological sludge domestic sewage resource treatment process according to claim 3, it is characterized in that: device is three layers of tubular, there is space bar that internal layer cylinder is separated into quartz sand, activated carbon filter, and the secondary aeration biomembrane reaction tank (2) in outer field one-level aeration biomembrane reaction tank (1) and middle layer encircled the side separation of tube; Aeration head (10) is up all arranged at each bottom, pond, in one-level, the secondary aeration biomembrane reaction tank filler (7) is arranged; A side of space bar has the aperture (5) of one-level aeration biomembrane reaction tank to secondary aeration biomembrane reaction tank above the barrel of middle layer, the opposite side of space bar has the aperture (6) of secondary aeration biomembrane reaction tank to the quartz sand filter tank above the internal layer barrel, the top of U type pipe (14) UNICOM to activated carbon filter (3) is arranged at bottom, quartz sand filter tank (4), ultraviolet disinfection lamp (15) is equipped with at the water outlet place of activated carbon filter (3), and the top of quartz sand, activated carbon filter has pipe to be communicated to one-level aeration biomembrane reaction tank; Aeration pump (8), recoil water pump (9), recoil air pump (11) and sewage force (forcing) pump (12) are installed below three layers of tube, the bottom that exports one-level aeration biomembrane reaction tank to of sewage force (forcing) pump, the aeration head that exports one-level, secondary aeration biomembrane reaction tank to of aeration pump, the aeration head that exports quartz sand, activated carbon filter to of recoil air pump, the bottom that exports quartz sand, activated carbon filter to of recoil water pump, blow-down pipe (13) also is equipped with in the bottom in each pond.
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| CNB2007100268674A CN100471801C (en) | 2007-02-09 | 2007-02-09 | Domestic sewage resource treatment process and device with zero discharge of biological sludge |
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| CNB2007100268674A CN100471801C (en) | 2007-02-09 | 2007-02-09 | Domestic sewage resource treatment process and device with zero discharge of biological sludge |
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| CN100471801C true CN100471801C (en) | 2009-03-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102390910A (en) * | 2011-11-25 | 2012-03-28 | 罗文峰 | Biological strengthening treatment water system for large specific surface area particles |
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| CN103771660B (en) * | 2014-01-16 | 2015-08-26 | 江苏大学 | A kind of rural domestic sewage treatment system |
| CN106145552A (en) * | 2016-08-29 | 2016-11-23 | 武汉东川自来水科技开发有限公司 | A kind of sewage disposal system based on two-stage aerated biological filter and method |
| CN106315979A (en) * | 2016-09-22 | 2017-01-11 | 福州科力恩生物科技有限公司 | Biogas waste liquid treatment device and treatment method |
| CN108675564A (en) * | 2018-06-20 | 2018-10-19 | 徐州世润德环保科技有限公司 | Except carbon nitrifies water treatment system |
| CN109179581A (en) * | 2018-10-22 | 2019-01-11 | 福建东亚环保科技股份有限公司 | A kind of integrated water quality detecting device forming pure water calibration with Treated sewage reusing |
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| CN113428973A (en) * | 2020-12-22 | 2021-09-24 | 吴植仁 | Method for sewage treatment by using sludge carbon as biomembrane carrier and filter aid carrying bed |
| CN112931389A (en) * | 2021-02-08 | 2021-06-11 | 山东康科润海洋科技有限公司 | Water treatment system for fish culture based on industrial production |
| CN112978908A (en) * | 2021-04-15 | 2021-06-18 | 蛋壳城矿环保科技发展(广州)有限公司 | Biofilm reactor and method for sewage treatment by same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102390910A (en) * | 2011-11-25 | 2012-03-28 | 罗文峰 | Biological strengthening treatment water system for large specific surface area particles |
| CN102390910B (en) * | 2011-11-25 | 2013-07-03 | 罗文峰 | Biological strengthening treatment water system for large specific surface area particles |
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| CN101033106A (en) | 2007-09-12 |
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Assignee: SHENZHEN LIYUAN WATER DESIGN & CONSULTATION CO., LTD. Assignor: Dong Wenyi Contract record no.: 2010440020051 Denomination of invention: Domestic sewage resource treatment process and device with zero discharge of biological sludge Granted publication date: 20090325 License type: Exclusive License Open date: 20070912 Record date: 20100518 |
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