CN202379847U - Rural sewage treating system - Google Patents
Rural sewage treating system Download PDFInfo
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- CN202379847U CN202379847U CN2011205136334U CN201120513633U CN202379847U CN 202379847 U CN202379847 U CN 202379847U CN 2011205136334 U CN2011205136334 U CN 2011205136334U CN 201120513633 U CN201120513633 U CN 201120513633U CN 202379847 U CN202379847 U CN 202379847U
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- sewage
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Abstract
The utility model provides a rural sewage treating system which is suitable for collecting and treating rural domestic sewage. The rural sewage treating system comprises a sewage collecting system, a grid well, an anaerobic tank and a land percolation system, which are communicated in sequence. The collecting system is used for collecting the domestic sewage of farmers and treating the domestic sewage in a centralized manner; the grid well is used for removing suspended solid substances out of sewage; the anaerobic tank utilizes physiological vital movements of anaerobic microorganisms to decompose complicated macromolecular substances in the sewage into easily-degraded micro-molecular substances so as to remove a part of organic substances; and the land percolation system is used for removing organic matters, suspension matters, nitrogen, phosphorus, trace organic matters and pathogens. The water treated by the rural sewage treating system disclosed by the utility model is clear and transparent and has no peculiar smells; a large quantity of pollutants are reduced and adverse influences on the previous water body are not caused; and therefore, the water can be recycled for field irrigation and livestock cultivation.
Description
Technical field
The utility model relates to a kind of Sewage treatment systems, especially a kind of country sewage treatment system.
Background technology
China is a developing large agricultural country, and people in the countryside are that the twice of urban population is many, shows according to relevant data, and present national rural area has the sewage that surpasses 2,500 ten thousand tons directly to discharge every year.Ministry of Construction's " village human settlement's present situation and problem " report of survey shows that to the village door-to-door survey of going in representative 74 villages, 43 counties of 9 provinces of China 96% village does not have discharge conduit and Sewage treatment systems, and productive life sewage arbitrarily discharges.
The new countryside construction target of " production development, improve living standards, township's wind civilization, cleanliness of villages, democratic management " that Eleventh Five-Year Plan is clear and definite.Strengthening the processing of country life sewage, is the integral part of look of a village regulation, also is the important content that the new socialist countryside is built.Rural area waterhead area potential potential safety hazard is not only in the environmental pollution that country life sewage causes, and also can aggravate the crisis of Freshwater resources, making the irrigation of ploughing can not get effective guarantee, harm peasant's survival and development.Therefore; Strengthen country life sewage collecting, processing and resource utilization Facilities Construction; Avoid directly discharging rural area water body, soil and the pollution of agricultural products that causes because of sewage; The safety and the peasant that guarantee the water source, rural area are physically and mentally healthy, are the important contents of strengthening infrastructure, advance the village renovation in the new countryside construction, also are the pressing issues that the improvement of rural people's habitat environment needs solution.
The utility model content
The purpose of the utility model provides the country sewage treatment system that a kind of suitable domestic sewage in rural areas by using is collected and handled.
Realize the country sewage treatment system of the utility model purpose, comprise the sewage collection system, grille well, anaerobic pond, the land percolation system that communicate successively;
Said gathering system is used to collect the sewage unification of peasant household and handles;
Said grille well is used for removing the suspended solid material of sewage;
Said anaerobic pond utilizes anaerobion self physiology vital movement, is decomposed into the small-molecule substance that is easy to degrade to complicated macromolecular substance in the sewage, removes partial organic substances matter;
Said land percolation system is used to remove organism, suspended substance, nitrogen, phosphorus, trace organic substance, pathogenic agent.
Said country sewage treatment system also comprises oxidation pond, communicates with the water outlet of said land percolation system.
Said sewage collection system comprises irrigation canals and ditches and pipe network, and said irrigation canals and ditches are arranged in road or limit, field.Do not take production, life land used.
The beneficial effect of the utility model country sewage treatment system is following:
1, the country sewage treatment system of the utility model, treat effluent is as clear as crystal, free from extraneous odour, pollutent reduces in a large number, and original water body is not caused any detrimentally affect, can be back to field irrigation and livestock and poultry cultivation.
2, adopt the soil filtration sink drainage; Compare with other treatment technology have high-level efficiency, advantages such as low investment, low running cost, low maintenance technology, less energy-consumption; And the bed body is filled the soil after the improvement; Be convenient to gather materials on the spot, and can plant various farm crop or cash crop, landscape tree etc. above the soil, so the soil filtration Sewage treatment systems more is applicable to the sewage treatment project in this village.
3, consider easy dry climate characteristics in this area's winter, after soil filtration is handled, connect an oxidation pond again, further deep purifying is handled, and water is back to the purpose of irrigation and livestock consumption in reaching, and is siccocolous effective measure.
Description of drawings
Fig. 1 is the structural representation of the utility model country sewage treatment system.
Embodiment
The embodiment of the utility model is following:
As shown in Figure 1, the country sewage treatment system of the utility model comprises the sewage collection system, grille well, anaerobic pond, land percolation system and the oxidation pond that communicate.
1, sewage collection system
Township peasant household disperses, and the road both sides all sporadicly are dispersed with some resident families, need set up sewage collection system, makes each sewage draining exit sewage concentrate the remittance follow-up system to focus on.Pipe network and irrigation canals and ditches arrange and take all factors into consideration terrain and existing utility condition, and factor such as economic situation, make along Cheng Liucheng the shortlyest, and investment cost is low.Irrigation canals and ditches are arranged in road or limit, field, do not take production, life land used.
2, grille well
Domestic sewage in rural areas by using contains such as suspended solid materials such as plank, plastics bag, weeds, hair, sands; Therefore before sewage gets into the ecosystem, grille well need be set; Exclude these solid impurities, avoid stopping up follow-up system and take the follow-up system volume, alleviate the subsequent disposal load.The grid slag should regularly be cleared up by peasant household voluntarily.
3, anaerobic pond
Under the anaerobic condition, utilize anaerobion self physiology vital movement, be decomposed into the small-molecule substance that is easy to degrade to complicated macromolecular substance in the sewage, remove partial organic substances matter, reduce the load of subsequent disposal system.
4, land percolation system
The main part of land percolation system formula Sewage treatment systems.Removal to pollutent plays main effect.
(1) organic matter removal
Organic matter removal mechanism comprises adsorption by soil and biological oxidation.At a slow speed, fast and in the cross flow system, organic removal is all carried out at upper soll layer basically, the microbial film that forms in microbial growth and the top layer plays a major role to organic removal in the sewage, its principal reaction is an oxidizing reaction.Amy thinks that in the soil filtration process, the removal mechanism of organism in the vadose region mainly is biological degradation, and absorption is sub-fraction just.Indoor soil filtration analog reslt shows that the organism that shows with parameters C OD provides Degradation can reduce 50%～60% simultaneously; The research of Quanrud also shows for secondary and three grades of water inlet (USSs; Be equivalent to China and go out water quality standard for two, three grades); Organism water outlet through the soil filtration treatment system is consistent basically; The stable concentration that water concentration does not rely on water inlet that goes out is described, there is very big surge capability in the land percolation system.Gary Amy and Wilson etc. have studied under U.S.'s field trial condition, and secondary and three grades of contamination of heavy are removed by utilization land percolation system. and the result shows that the average removal rate of COD and TOX (total organic halogen) is respectively 90% and 80%.
(2) removal of suspended substance (SS)
Through the filteration that is adsorbed in of soil particle, the sewage by suspended thing (SS) of batching gets in the soil particle gap, almost can all cut elimination by soil and remove, and water seepage SS value can reach below the 10mg/L.
(3) removal of nitrogen (N)
Nitrogen in the sewage exists in a variety of forms, mainly by organonitrogen, ammonia-state nitrogen, nitric acid attitude and nitrite nitrogen etc.For general sewage, almost can be through nitric nitrogen in soil processing and the plant absorbing sewage by whole removals.Nitric nitrogen can finally become nitrogen through denitrification with infiltration migration downwards the time.Denitrification, volatilization and plant absorbing are that the main path of removing nitrogen is handled in the soil.Soil filtration can constantly go on to the removal of organism and ammonia nitrogen, and the soil water-containing layer is equivalent to a bio-reactor by aerobic, anoxic, anaerobism combination.
(4) removal of phosphorus (P)
The removal of phosphorus mainly realizes with plant absorbing through adsorption by soil is fixing in the land treatment system; In land treatment system; Soil has great absorption crystallized ability as the storage vault of a phosphorus to phosphorus, and 99% phosphorus is adsorbable and be stored in the soil in the sewage.Soil is relevant to metals ion quantity such as the contained clay composition of the loading capacity of phosphorus and soil and aluminium, iron and soil pH value.In general, contain mineral substance soil many and that have a crumb structure phosphorus is had bigger absorption crystallized ability.The land treatment system dephosphorization process mainly moves under anoxic and Anaerobic processes condition, so soil microorganisms is the principal element of this technology normal operation under low carbon source situation to the utilization ratio of matrix in anoxic and the Anaerobic processes, the BOD of control water inlet
5/ TN and COD/TP and the sewage residence time in soil is the key that improves dephosphorization.Soil has stronger characterization of adsorption to phosphorus, generally can confirm as 2000mgP/100g soil.
(5) removal of trace organic substance
In recent years, people particularly pay close attention to the ecological behavior of trace organic substance in environment, home to return to and to short-term, the long-term effect of HUMAN HEALTH.The listed priority pollutant of U.S. EPA has 88% to be trace organic substance, and China also takes much count of the research and the monitoring of such material.The removal of trace organic substance in land treatment system mainly is because volatilization, photodissociation and biological degradation.
In general, various similar land treatment system all has very high and stable decontamination effect improving to trace organic substance.But the accumulation of this type of material in soil-plant system is one of focal issue that people paid close attention to long-term ecologic effect always. through point source control and pre-treatment measure; Avoid this type of material to get into land treatment system as far as possible, remain the assurance of land treatment system long-term safety operation.
(6) removal of pathogenic agent
The soil filtration treatment system is as a kind of ecological treatment system; Handle outside the above pollutent; Some trace element and pathogenic micro-organism also there is certain removal effect; The absorption, drying, radiation, filtration of soil----botanical system is passed through in the removal of pathogenic agent, biological effect such as engulf realizes that wherein slow rate and subsurface infiltration are the most effective to the removal of pathogenic agent.
5, oxidation pond
Water outlet through after the land percolation system handles can reach agricultural irrigation norm basically; Be further advanced treatment water outlet; Make water outlet reach " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) one-level B standard, oxidation pond still need be set handle.Factor attractive in appearance is considered in the design of oxidation pond, can be used as the view pool, and water outlet is used for agricultural irrigation or directly enters the korneforos.
Water quality parameter before the WWT is following: unit: mg/l
| Project | COD Cr | BOD 5 | NH3-N | TP | SS |
| Scope | ≤250 | ≤150 | ≤25 | ≤3.5 | ≤150 |
Water quality parameter through after the processing of the utility model country sewage treatment system is following: unit: mg/l
| Project | ?COD Cr | BOD 5 | NH3-N | ?TP | SS |
| Scope | ?≤60 | ≤20 | ≤8(15) | ?≤1 | ≤20 |
Annotate: the controlling index when the outer numerical value of bracket is water temperature＞12 ℃, the controlling index when numerical value is water temperature＜12 ℃ in the bracket.
It is thus clear that; Water after the utility model country sewage treatment system is handled meets sewage drainage standard and carries out " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) one-level B standard; Its each item leading indicator standard is (GB5084-2005) more stricter than " agricultural irrigation water quality standard ", and water quality requirement is higher.
Embodiment recited above describes the preferred implementation of the utility model; Be not that scope to the utility model limits; Design under the spiritual prerequisite not breaking away from the utility model; Various distortion and improvement that the common engineering technical personnel in this area make the utility model technical scheme all should fall in the protection domain that claims of the utility model confirm.
Claims (3)
1. a country sewage treatment system is characterized in that: comprise the sewage collection system, grille well, anaerobic pond, the land percolation system that communicate successively;
Said gathering system is used to collect the sewage unification of peasant household and handles;
Said grille well is used for removing the suspended solid material of sewage;
Said anaerobic pond utilizes anaerobion self physiology vital movement, is decomposed into the small-molecule substance that is easy to degrade to complicated macromolecular substance in the sewage, removes partial organic substances matter;
Said land percolation system is used to remove organism, suspended substance, nitrogen, phosphorus, trace organic substance, pathogenic agent.
2. country sewage treatment system according to claim 1 is characterized in that: also comprise oxidation pond, communicate with the water outlet of said land percolation system.
3. country sewage treatment system according to claim 1 and 2 is characterized in that: said sewage collection system comprises irrigation canals and ditches and pipe network, and said irrigation canals and ditches are arranged in road or limit, field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205136334U CN202379847U (en) | 2011-12-12 | 2011-12-12 | Rural sewage treating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205136334U CN202379847U (en) | 2011-12-12 | 2011-12-12 | Rural sewage treating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202379847U true CN202379847U (en) | 2012-08-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205136334U Expired - Fee Related CN202379847U (en) | 2011-12-12 | 2011-12-12 | Rural sewage treating system |
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| Country | Link |
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| CN (1) | CN202379847U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481017A (en) * | 2014-12-18 | 2015-04-01 | 云南省农业科学院农业环境资源研究所 | Method for preventing and treating mountainous and semi-mountainous area rural non-point source pollution through ecological ditch and pond system |
-
2011
- 2011-12-12 CN CN2011205136334U patent/CN202379847U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481017A (en) * | 2014-12-18 | 2015-04-01 | 云南省农业科学院农业环境资源研究所 | Method for preventing and treating mountainous and semi-mountainous area rural non-point source pollution through ecological ditch and pond system |
| CN104481017B (en) * | 2014-12-18 | 2017-01-18 | 云南省农业科学院农业环境资源研究所 | Method for preventing and treating mountainous and semi-mountainous area rural non-point source pollution through ecological ditch and pond system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20181212 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |