CN1450007A - Biological comprehensive treatment method for domestic organic refuse and sewage and used treatment system thereof - Google Patents
Biological comprehensive treatment method for domestic organic refuse and sewage and used treatment system thereof Download PDFInfo
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- CN1450007A CN1450007A CN 02103896 CN02103896A CN1450007A CN 1450007 A CN1450007 A CN 1450007A CN 02103896 CN02103896 CN 02103896 CN 02103896 A CN02103896 A CN 02103896A CN 1450007 A CN1450007 A CN 1450007A
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Abstract
The present invention discloses a comprehensive biological treatment method of domestic organic refuse and sewage, said method includes physical treatment step, biological treatment step and regenerated water treatment step. The treated water can be directly reused as non-direct drinking water.
Description
Technical field
The present invention relates to a kind of method of wastewater treatment and system thereof.More particularly, the present invention relates to life organic matter rubbish and sewage, the applying biological degradation technique carries out the method for comprehensive treating process and the system of this method of enforcement.
Background technology
At present, separately carry out the processing of domestic organic garbage and sewage in China city, and garbage treatment is mainly used three kinds of methods, i.e. sanitary landfill, During High-Temperature Composting, burning disposal.Wherein landfill method accounts for 80%, and the During High-Temperature Composting method accounts for 20%, and the burning disposal method seldom.Landfill method investment is little, instant effect, and treatment capacity is big, but permanently takies a large amount of soils, and the soil severe contamination distributes stench, and the biogas of generation is serious to topsoil, and underground water is also polluted.
Municipal sewage plant's treatment process mostly adopts one-level to handle and second-stage treatment both at home and abroad.It is to adopt physical method that one-level is handled, and mainly removes bulk suspended substance and sand grains etc. in the sewage by methods such as grid interception, precipitations.This treatment process is all ripe both at home and abroad, and difference is little.Second-stage treatment then is to adopt biochemical method, mainly is to remove nutritive salt such as the dissolved organic matter of the suspension in the sewage and nitrogen, phosphorus by action of microorganisms.At present, this treatment process has several different methods, and end is got up, and representational technology mainly contains traditional active sludge oxidation ditch, A/O or A2/O technology, SBR and CCAS technology etc.
The city can not solve the increasing problem of municipal wastes to the separate treatment of domestic organic garbage and sewage, and along with city management is that the mode of unit has become a kind of trend with the biotope, the domestic organic garbage of biotope and sewage have become the important topic of the refuse treatment and the sewage disposal in city.Because the composition that domestic organic garbage in the sub-district and sewage do not contain industrial refuse and industrial sewage, its composition is single relatively, helps domestic organic garbage and sewage are carried out comprehensive treating process.But traditional rubbish separates with sewage disposal and carries out, can not be to rubbish and sewage, and especially domestic organic garbage and sewage carry out comprehensive treating process, and facility investment is huge.Traditional in addition sewage is introduced the stratum with water and is permeated after treatment.Then, water is drawn reuse again, rather than treating water is directly used as non-direct-drinking water, and the investment of this treatment process is also very big the underground of another location.
Summary of the invention
The purpose of this invention is to provide a kind of domestic organic garbage and process for comprehensively treating sewage of carrying out in the biotope, water after treatment directly carries out reuse as non-direct-drinking water.
Another object of the present invention provides a kind of Sewage treatment systems.
The integrated conduct method of domestic organic garbage of the present invention and sewage comprises: physical treatment step, biological treatment step and reused water processing step.
Domestic organic garbage described in the present invention is meant the organic waste of pulverizing and grinding of food, particularly cooks and washes the organic waste of the pulverized grinding that dish produces.
Sanitary sewage described in the present invention is meant the sewage that enters sewer line from toilet and kitchen that produces in the daily life.
Described physical treatment step comprises pre-treatment step, the sedimentation treatment step that carries out and sludge disposal step in a settling bowl.
Pre-treatment step comprises: domestic organic garbage is pulverized the pulverising step that grinds with garbage grinder, make the organic granularity that reaches suitable treatment of life.Because the hardness of domestic organic garbage is less, so, adopt garbage grinder that domestic organic garbage is pulverized to grind in the present invention and reach suitable granularity; Granulated garbage and other sewage is the blended mixing step in mixing tank (pipe), and both mixing are restriction especially not, as long as make mixed material help outputing in the grating tank.For preventing that the organic waste particle that garbage grinder is pulverized is adsorbed on blow-off line inwall and the obstruction that prevents pipeline, behind garbage grinder, install one and have the residual filter of washing unit at any time, and at the one group of water pump that is provided with of the front end of grating tank, with the increased water flow amount, prevent particulate sedimentation in the sewage; The filtration step that carries out in grating tank after tentatively removing by filter the suspended solid in the sewage, makes the part can settled dirt sedimentation, and the dirt that another part can float floats up; Enter settling bowl one time with sewage, the preliminary sedimentation treatment step that carries out in a settling bowl is removed part BOD and solid.
The sludge disposal step is that those skilled in that art are known, does not describe in detail at this.
Biological treatment step described in the treatment process of the present invention is included in the Aerobic Pond anaerobic treatment step of carrying out the aerobic treatment step, carrying out and the sedimentation treatment step that carries out in secondary settling tank in anaerobic pond.
Aerobic treatment is to adopt the multistage circulating biological contact of aerobic degradation technique, promptly carries out in the Aerobic Pond 1,2 by two serial or parallel connections, by the effect of aerobic bacteria, the dirt in the sewage is removed.The water inlet of Aerobic Pond 2 is at half than the water inlet of Aerobic Pond 1, and is provided with reflux behind anaerobic pond, the dirt that decomposes fully and a part of unprecipitated flocculation material is back to enter aerobic again behind the Aerobic Pond 1 and the anaerobic treatment process is further decomposed.
Described reflux is arranged on the middle and upper part of Aerobic Pond 1,, brings air into anaerobic pond and reduce the treatment effect of anaerobic pond to prevent the air channelling.
In anaerobic pond,, remove the dirt in the decontaminated water by the effect of anerobe.
About employed microbe species in Aerobic Pond and the anaerobic pond and action of microorganisms mechanism is well known to a person skilled in the art, is not described in detail at this.Microbial strains was replenished once in about 1 year, can add Aerobic Pond and/or anaerobic pond respectively.
The described reused water processing step of process for comprehensively treating sewage of the present invention is to adopt coagulating sedimentation and filtration, makes sewage reach the reuse water standard of non-direct-drinking water, and qualified reuse water is delivered to the user through water pump 1 and 2 transmission again.Two groups of water pumps are one high and one low, and between pipeline in designed a buffer zone, with the operational efficiency of better performance water pump and the transmission efficiency of regenerated recycle-water.
Process for comprehensively treating sewage of the present invention is to carry out in being arranged at subterranean treatment system, and this treatment system comprises:
(1) device for pulverizing rubbish that domestic organic garbage is pulverized and ground;
(2) be used for organic matter rubbish and the sanitary sewage blended mixing tank (pipe) that to pulverize;
(3) be arranged on check valve between mixing tank and the grating tank;
(4) grating tank that is connected with settling bowl with mixing tank;
(5) settling bowl that is connected with placed in-line anaerobic pond 1,2 with grating tank;
(6) the placed in-line Aerobic Pond 1,2 that is connected with anaerobic pond with settling bowl;
(7) anaerobic pond that is connected with secondary settling tank with Aerobic Pond 2;
(8) secondary settling tank that is connected with the filter tank with anaerobic pond;
(9) be used for the sewage of anaerobic pond is turned back to the reflux of Aerobic Pond 1;
(10) be used for the sewage of secondary settling tank is turned back to the reflux of Aerobic Pond 1;
(11) be used for the sewage of secondary settling tank is turned back to the reflux of a settling bowl.
Below, further specify the present invention in conjunction with the accompanying drawings.
Description of drawings
Fig. 1 is a sewage comprehensive treating process block diagram of the present invention.
Fig. 2 is the synoptic diagram of the part that refluxes of the present invention.
Fig. 3 is domestic refuse and sewage blended synoptic diagram among the present invention.
Fig. 4 is the garbage grinder that uses among the present invention and the synoptic diagram of residual filter.
Fig. 5 is the transmission equipment synoptic diagram of regenerated recycle-water among the present invention.
Fig. 6 is embedded in subterranean synoptic diagram for equipment of the present invention.
Embodiment
As depicted in figs. 1 and 2, the physical treatment step is provided with garbage grinder 2 under being meant and washing the tank of nappy 1 in organic waste source of generation such as kitchen, the organic waste that produces is pulverized the pre-treatment of grinding, organic waste is after garbage grinder is pulverized, granulated garbage is mixed in mixing tank (pipe) with its sanitary sewage, preliminary filtration by grating tank is further decomposed, and makes this settled dirt sedimentation, and this floating dirt floats up; Sewage enters settling bowl to carry out sedimentation and handles, biological oxygen part demand (BOD) of sedimentation 40% and 65% solid in settling bowl.For preventing that the organic waste particle that garbage grinder is pulverized is adsorbed on blow-off line inwall and the obstruction that prevents pipeline, behind garbage grinder, install one and have the residual filter 3 of washing unit at any time, and at the one group of water pump of establishing of the front end of grating tank, with the increased water flow amount, prevent particulate sedimentation in the sewage.
Sewage through after the above-mentioned processing enters biological treatment step.Promptly enter Aerobic Pond 1 and 2 together from the sewage that once falls the pond processing and the mud of backflow, in the sewage organic dirt by amphimicrobe and aerobic bacteria decompose effectively, absorption, metabolism, and polyP bacteria effectively utilizes energy absorption phosphorus, thereby reaches the purpose that purifies water with certain phosphor-removing effect.Together enter anaerobic pond through sewage and returned sluge after the aerobic treatment, and adopt submersible agitator to make the muddy water uniform mixing, prevent precipitation.Anaerobic pond has the effect of selector switch, can prevent from effectively to improve sludge settling property because of the caused sludge bulking of thread fungus excessive multiplication.Meanwhile, much under aerobic condition, be difficult to biodegradable larger molecular organics, under anaerobic by amphimicrobe and anerobe effect, or be small-molecule substance by the part Degradation and Transformation, or its structure is changed, be easier to biology aerobic oxidation and decomposition, strengthen the biodegradability of sewage, and polyP bacteria discharges phosphorus effectively, obtains energy, for the raising of subsequent technique effect creates favorable conditions.Anaerobism mesophilic digestion behind aerobic methane-generating pit (O pond), the biogas of generation can be used as the burning energy or generating, or as the raw material of Chemicals etc.
Sewage through biological treatment step enters through secondary settling tank and filter tank processing, because the metabolism of microorganism, the most of dirt in the sewage becomes CO
2And H
2O.In secondary settling tank, sink to microorganism at the bottom of the pond, by pipeline and blowback, deliver to the methane-generating pit front end and mix with the new sewage that flows into, recycle.Clarifying treatment water in the secondary settling tank then flows to after the filter tank carries out advanced treatment by going out water pump continuously, and the reuse water that meets non-direct-drinking water standard that obtains is transferred to the user with two group conveying pumps etc.
This treatment system is that domestic organic garbage and sewage are carried out comprehensive treating process with the difference of other Sewage treatment systemss, domestic organic garbage is after the pulverizing of garbage grinder is ground, granulated garbage mixes with other sewage and flow into grating tank, settling bowl, biodegradable Aerobic Pond and anaerobic pond fermentation, coagulating sedimentation and a filtration, the reuse water that obtains can be used as high-level receiving water body source or is back to non-direct-drinking water sources such as other plant irrigation.The end of advanced treatment also will have chlorination to require and the filter tank.Along with the high level development of life, advanced treatment is the needs of future development.The native system flow process only has two refluxes, and after handling through above treatment scheme, a small amount of residue reaches emission standard and enters city sewage effluent pipeline.Few untreated mud flows into urban sewage pipe.
The multistage circulating biological contact of aerobic of the present invention degradation technique, as shown in Figure 2, structure is provided with two Aerobic Ponds 1 and 2 behind a settling bowl, with ground is benchmark, the height of the water inlet of Aerobic Pond 1 is 1H, then the water inlet of Aerobic Pond 2 is 0.8H, 0.5H preferably, and the water inlet of Aerobic Pond 2 is lower than the water inlet of Aerobic Pond 1.Its objective is the discharge of buffering Aerobic Pond, increase the contact area of sewage and microorganism in the Aerobic Pond effectively, the organic rate of decomposition in the raising sewage.Sewage is after the decomposition of anaerobic pond, still have the part dirt fully to be handled, so, in the method for the invention, behind anaerobic pond, set up reflux, make not the dirt and a part of unprecipitated flocculation material that decompose fully be back to Aerobic Pond 1, enter aerobic again and the anaerobic digestion treatment step is handled.This reflux is arranged on the middle and upper part of Aerobic Pond 1, the air channelling can not take place, and also air can not brought into the treatment effect that anaerobic pond reduces anaerobic pond.
As shown in Figure 3 and Figure 4, pulverize the organic waste particle that grinds and be adsorbed on blow-off pipe for preventing garbage grinder to inwall and the obstruction that prevents pipeline, be provided with the strainer and the transmitting device of the pulverized particles that other Sewage treatment systemss do not have in the system of the present invention, this strainer mainly is that a spot of oversize granule is filtered, and is provided with washing unit at any time.In order to prevent that the foul smell in the sewer line neutralizing treatment pond from not overflowing from blow-off line, system of the present invention has set up unidirectional water seal 4 in main sewer line, and its effect is that sewer line can only be opened downwards, and has stronger gas tightness when closing.
As shown in Figure 5, sewage has after treatment reached the regeneration water quality standard of non-direct-drinking water, and qualified reuse water is transferred to the user through water pump 1 and 2 again.Water pump 1 and 2 one high and one low settings have designed a buffer zone 5 in the pipeline of between, with the operational efficiency of bringing into play water pump better and the transmission efficiency of regenerated recycle-water.
As shown in Figure 6, all devices of Sewage treatment systems of the present invention are implemented in underground, are the cement steel and concrete structure, and outer wall and inwall are handled through multilayer flashing layer (6).For the ease of cleaning, the present invention has designed and has drawn the two easily iron hoop devices of lid, and loam cake and device body are provided with obturator, and it is contaminated and system's ambient air is not contaminated that this helps greening thing above the system.
Because the present invention adopts garbage grinder that organic waste is pulverized, then granulated garbage is mixed with other sanitary sewages, preliminary filtration by grating tank, and sanitary sewage in the urban life sub-district and organic waste are carried out comprehensive treating process, alleviated the processing burden of the rubbish and the sewage in city so greatly.Consider the characteristics of the organic waste and the sanitary sewage of biotope simultaneously, the sewage after will handling in technical scheme of the present invention reaches the regeneration water quality standard of non-direct-drinking water, with direct Recycling.
Claims (10)
1. the comprehensive organism treatment process of domestic organic garbage and sewage, this method comprises physical treatment step, biological treatment step and reused water processing step.
2. treatment process according to claim 1 is characterized in that described physical treatment step comprises pre-treatment step, sedimentation treatment step and sludge disposal step.
3. treatment process according to claim 2 is characterized in that described pre-treatment step comprises pulverising step, domestic organic garbage particle and sewage blended mixing step that domestic organic garbage pulverize is ground, removes the filtration step of suspended solid and the sedimentation treatment step that carries out in grating tank in a settling bowl.
4. treatment process according to claim 1, it is characterized in that described biological treatment step is included in carries out the aerobic treatment step and carry out the anaerobic treatment step in anaerobic pond in the Aerobic Pond.
5. method according to claim 4 is characterized in that the aerobic treatment step is to carry out in the Aerobic Pond of two serial or parallel connections.
6. method according to claim 1 is characterized in that described reused water processing step is included in coagulant precipitation step of carrying out in the secondary settling tank and the filtration step that carries out in filtering basin.
7. the treatment system that adopts of the described treatment process of claim 1-6, this treatment system comprises:
(1) domestic organic garbage is pulverized the shredding unit that grinds;
(2) be used for life organic matter rubbish and the sewage blended mixing device that to pulverize;
(3) be arranged on check valve between mixing device and the grating tank;
(4) grating tank that is connected with settling bowl with mixing device;
(5) settling bowl that is connected with placed in-line anaerobic pond (1) with grating tank;
(6) the placed in-line Aerobic Pond that is connected with anaerobic pond with settling bowl;
(7) anaerobic pond that is connected with secondary settling tank with Aerobic Pond (2);
(8) secondary settling tank that is connected with the filter tank with anaerobic pond;
(9) be used for the sewage of anaerobic pond is turned back to the reflux of Aerobic Pond (1);
(10) be used for the sewage of secondary settling tank is turned back to the reflux of Aerobic Pond (1);
(11) be used for the sewage of secondary settling tank is turned back to the reflux of settling bowl (1).
8. by the described treatment system of claim 7, it is characterized in that being arranged on the middle and upper part of Aerobic Pond (1) from the reflux that anaerobic pond is back to Aerobic Pond (1), prevent the air channelling, and bring air into decomposition effect that anaerobic pond reduces anaerobic pond.
9. by the described treatment system of claim 7, the water inlet of Aerobic Pond (1) of water inlet ratio that it is characterized in that Aerobic Pond (2) is low by 1/2, after making the sewage that decomposes fully and a part of unprecipitated flocculation material not be back to Aerobic Pond (1), carry out aerobic and anaerobic treatment again.
10. by the described treatment system of claim 7, it is characterized in that being arranged on underground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02103896 CN1450007A (en) | 2002-04-10 | 2002-04-10 | Biological comprehensive treatment method for domestic organic refuse and sewage and used treatment system thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02103896 CN1450007A (en) | 2002-04-10 | 2002-04-10 | Biological comprehensive treatment method for domestic organic refuse and sewage and used treatment system thereof |
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| CN1450007A true CN1450007A (en) | 2003-10-22 |
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| CN 02103896 Pending CN1450007A (en) | 2002-04-10 | 2002-04-10 | Biological comprehensive treatment method for domestic organic refuse and sewage and used treatment system thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101786092A (en) * | 2010-02-25 | 2010-07-28 | 宁波大学 | Comprehensive treatment system for organic garbage and domestic sewage and comprehensive treatment method therefor |
| CN104193109A (en) * | 2014-09-17 | 2014-12-10 | 安徽省绿巨人环境技术有限公司 | Catering sewage treatment method |
| CN104310710A (en) * | 2014-10-27 | 2015-01-28 | 山东省环境保护科学研究设计院 | High-efficiency energy-saving treatment process for coal chemical industry wastewater |
| CN107935305A (en) * | 2017-11-28 | 2018-04-20 | 奕铭（大连）科技发展有限公司 | A kind of domestic sewage processing method |
| CN109867405A (en) * | 2017-12-04 | 2019-06-11 | 上海江柘环境工程技术有限公司 | Domestic sewage processing system |
-
2002
- 2002-04-10 CN CN 02103896 patent/CN1450007A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101786092A (en) * | 2010-02-25 | 2010-07-28 | 宁波大学 | Comprehensive treatment system for organic garbage and domestic sewage and comprehensive treatment method therefor |
| CN101786092B (en) * | 2010-02-25 | 2013-06-26 | 宁波大学 | Comprehensive treatment system for organic garbage and domestic sewage and comprehensive treatment method therefor |
| CN104193109A (en) * | 2014-09-17 | 2014-12-10 | 安徽省绿巨人环境技术有限公司 | Catering sewage treatment method |
| CN104310710A (en) * | 2014-10-27 | 2015-01-28 | 山东省环境保护科学研究设计院 | High-efficiency energy-saving treatment process for coal chemical industry wastewater |
| CN104310710B (en) * | 2014-10-27 | 2015-12-09 | 山东省环境保护科学研究设计院 | A kind of coal chemical wastewater treating technique |
| CN107935305A (en) * | 2017-11-28 | 2018-04-20 | 奕铭（大连）科技发展有限公司 | A kind of domestic sewage processing method |
| CN109867405A (en) * | 2017-12-04 | 2019-06-11 | 上海江柘环境工程技术有限公司 | Domestic sewage processing system |
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