CN1330591C - Decentralizing treating and utilizing technology for zero discharging sewage - Google Patents

Abstract

The present invention relates to a decentralized treating and utilizing technology for zero discharging sewage, which comprises an organism fermentation system, a methane collecting system, a decentralized sewage system, a plant water purifying system and a bracket. The present invention discharges methanation sewage into green land in situ by effectively utilizing the huge energy of biosphere and plant kingdom in nature. The sewage is purified by plant absorption. The present invention does not need underground sewage pipe networks and occupies small land. The present invention not only conveniently and effectively utilizes two different processes of organism fermentation and plant absorption to purify the sewage but also promotes plant growth, greens and purifies the environment and the air and also provides a cleaning energy source and underfeed water. Thereby, the positive cycle is formed. The present invention has the advantages of economy, water saving and environmental protection.

Description

Zero release sewage dispersion treatment is utilized system

(1), technical field

The present invention relates to the sewage water treatment method of a kind of sewage by two kinds of various process of biological fermentation generation biogas and plant absorbing nutrient, it utilizes system by the zero release sewage dispersion treatment that biological fermentation system, collecting methane system, decentralized sewage system, plant water purifying system and support are formed.

(2), background technology

Shortage of water resources; Energy shortage, environmental pollution have become the major issue that world today national governments pay much attention to, and China is the country of serious water shortage in the world, there is more than 200 urban water shortage in the whole nation at present, more than 40 city serious water shortage, a day water deficit reaches 1,600 ten thousand tons, 6,000,000,000 tons of year water deficits.On the one hand, because of causing financial loss, lack of water reaches more than 2,000 hundred million yuan every year.On the other hand, the year quantity of wastewater effluent of China reaches more than 800 hundred million tons, wherein year quantity of wastewater effluent in cities and towns is about 1.37 hundred million tons, wastewater treatment rate only is 6%, the unprocessed rivers,lakes and seas that just directly enter of sewage more than 90%, water pollutes and impels shortage of water resources further to aggravate again, forms vicious cycle, has become one of subject matter that influences Chinese environmental.Add the on business expansion of greenery area altogether of lack of water city, the greenery patches water consumption is anxious to be increased, and more aggravates the short water supply situation in lack of water city.For this reason, the Chinese government emphasizes that in the recommendation of " Tenth-Five Year Plan " water saving is the priority of country, has only the demand contradictory that could alleviate water resources by water saving.Water is a big weakness to Development in China.In China, water will become more and more expensive resources.Urban water shortage and sewage handling problem have caused the great attention of the Chinese government.In fact, sewage is a kind of resource, and it contains a large amount of organic substances, can utilize biological fermentation to produce biogas, and it is a kind of renewable energy source of cleaning, can be used for generating or heat supply, and remaining mud still is the organic fertilizer of farm crop.Control the sewage fermentation that prefecture sewage work utilizes two contiguous samll cities and towns as the California, USA Oran, produce 65000 cubic metres of biogas every day, only can generate electricity 1000 kilowatts with sub-fraction wherein.And for example China's production and use of marsh gas engineering is only collected and is utilized biogas, is about to natural pond liquid and enters water body as sewage, and huge sewage resource fails to obtain to utilize, and causes the adverse consequences of water pollution on the contrary.Effusive after the sewage fermentative processing is the sterilization, odorless of eutrophication, tasteless water, and it is the nutritive medium of vegetable soilless culture still not, but also is urban afforestation ground indispensable nutrient of plant and moisture content.Vast territory and abundant resources in China, populous, livestock breeding industry development speed is violent, very abundant biogas resource is arranged, sewage is still not a kind of gathers materials on the spot, the waste conversion using new forms of energy of turning waste into wealth, and can be lack of water urban green space plant very precious water resource is provided, for the city provides groundwater feed water.Yet, up to the present also do not have a kind of more convenient, effective, economic sewage recycling to handle the solution of utilizing again.Many countries are new water source for overcoming the difficulty of lack of water, energetically municipal effluent being opened up on the our times, are called as " second water resources " in city.Present sewage is to handle like this, and it focuses on sewage work by the sewage that crisscross urban sewage pipe system gives off by sewage pumping station, through secondary biochemical treatment, after physical treatments such as precipitation, enter the aeration tank, handle through active sludge biological, discharge behind the redeposition.Problems such as this sewage method that focuses on be difficult to be collected and to be used biogas, and it is higher also to exist construction, operation, maintenance cost, and floor space is big, and is long in time limit.Especially relate to that thorny city planning, municipal administration, environment, health etc. are numerous lives alone and the problem of can making in order is joined by department.Most critical still is the input and the recovery of the capital problem of a huge sum of money.Data according to statistics, 1 cubic metre of cost of investment of southern municipal sewage treatment is a 1000-2000 unit, working cost is a 0.4-0.6 unit.This is the basic reason that influences municipal sewage treatment.As Jinan City, Shandong purification of water quality one factory, only first phase of construction just drops into 3.05 hundred million yuan, takes up an area of 249 mu, and day is disposed of sewage 230,000 tons, lasts more than 7 years and just puts into operation.Moreover that crisscross urban sewage pipe system also is huge investment project in the urban construction.The factor of above-mentioned existence has a strong impact on sewage recycling and handles popularizing and promoting of utilizing again.Present present situation is like this: account for the sanitary sewage of national 50% population discharging in the city, the huge biogas amount that is produced is in vain from entering atmosphere septic tank, the sewage network downstairs.On the one hand waste is valuable clean energy, and the Greenhouse effect of a methane molecule are 20 times of carbon dioxide packing on the other hand! What pollute is atmosphere.Account for the year total amount of sewage discharge of the whole nation 95% or more in the rural area and be a times of whole nation year 40000000000 tons of lack of water total amounts! Huge sewage resource is unprocessed to enter water body from irrigation canals and ditches in vain.On the one hand China's underground water 180,000 square kilometres of over-extraction, the 2.08 hundred million mu of arable land lacks of water in the whole nation are suffered from drought ,-North China, about 50% grain-producing area----, whole nation flat source, groundwater table decreasing is 5 feet in 5 years, because of lack of water causes 9,000,000 kilograms/year of grain drop in production; Pollute the vicious cycle of water quality on the other hand again.Though total water diversion volume of China's " south water to north " engineering is 44,000,000,000 tons/year; 5,000 hundred million yuans of gross investments, total duration reaches 50 years, but water pollutes the significant problem that is still reality.Current urgent need be a kind of can the processing and utilizing sewage resource, can from sewage, collect simultaneously again and utilize biogas energy, convenient, fast, effective, economic sewage collecting utilizes system.Be used as water resources with influencing sewage-----land productivity of turning waste into wealth of China's environment with economy; " No. two killers " methane----of Global warming-convert to new forms of energy will be influenced with turning bane into boon.

(3), summary of the invention

The objective of the invention is to design a kind of zero release sewage dispersion treatment and utilize system, it can effectively utilize in the Nature organic sphere and botanic huge energy to produce biogas, purify waste water, it is the land occupation area hardly, need city underground sewage network system hardly, the utilization of discharging on the spot that domestic sewage resource is handled conveniently, effective, economic, practical, i.e. the zero release of sewage.

For this purpose, the present invention adopts following technical scheme: zero release sewage dispersion treatment utilizes system to comprise biological fermentation system, collecting methane system, decentralized sewage system, plant water purifying system and support; The biological fermentation system comprises by a plurality of fermentor tanks of ganging up mutually communicating pipe, the inlet end of fermentor tank interconnects mutually with blow-off pipe and presses, and water outlet end is connected with the hydraulic pressure position-limiting tube, and the upper end has the pressure limiting valve of vapor pipe, there is the mud discharging valve lower end, is provided with gravity in jar and scratches and mix diversion trench; The collecting methane system comprises that an end of biogas jar and the pressure limiting valve that the fermentor tank upper end has vapor pipe are interconnected, and the other end is by the escape pipe output biogas that has valve; Decentralized sewage system comprises that the inlet end of water collect tank is connected with the hydraulic pressure position-limiting tube of fermentor tank water outlet end, and the water pipe of water outlet end connecting band valve switch enters plant landscape ground with water, and the water collect tank top is provided with upflow tube; The plant water purifying system comprises the vegetable soilless culture pond, plant landscape ground and ditch pond, and the self-purification capacity that makes full use of physical environment is disposed of sewage; The height and the position of various jars of pipes of bracket supports control.

It is a kind of ecological engineering method that zero release sewage dispersion treatment is utilized system, its ultimate principle is by behind the biological fermentation biogas with the sewage in a family family, a building high building or a public lavatory, disperse on the spot to be discharged into plant landscape on the ground, utilize soil plant absorbing decomposing, purifying sewage.When sanitary sewage poured in the fermentor tank by the high building blow-off pipe, the energy of universal gravity constant was scratched under the effect of mixing diversion trench at gravity and is formed vortex, scratches the sewage of mixing in the jar.Sewage is by flowing into one communicating pipe successively to a plurality of fermentor tanks, under certain temperature, humidity, acidity and anoxia condition, through anaerobies microorganism have an effect generation inflammable gas, i.e. biogas.It rises the sewage space surface that collects in the fermentor tank, the pressure that produces increases with the increase of biogas amount, force sterilization, no stink after anaerobically fermenting is handled to contain eutrophy sewage, in the water collect tank in the hydraulic pressure position-limiting tube inflow decentralized sewage system, then by being with the water pipe of valve switch, disperse to enter in the plant water purifying system, carry as required and irrigate plant landscape on the ground, or farmland, the suburbs or as the vegetable soilless culture liquid of factory farming.The hydraulic pressure position-limiting tube also plays the maximum water level in the do qualification fermentor tank, guarantees to leave enough biogas spaces in the fermentor tank, and the biogas with pressure stores energy constantly by in the vapor pipe input biogas jar that has pressure limiting valve.By having the escape pipe output biogas of valve, be used for generating or heat supply during power consumption.Pressure limiting valve plays the lowest water level line in the do qualification fermentor tank, prevents that pressure from making biogas pass through the leakage of hydraulic pressure position-limiting tube too greatly.Mud at the bottom of mud discharging valve in the fermentor tank will be deposited on jar is discharged, for farm crop provide organic fertilizer.Upflow tube on the water collect tank allows the water that overfills overflow to plant landscape on the ground; The plant water purifying system is the huge sewage purification processing system of nature, and it absorbs, digests, decomposes nutrient, moisture content and various mineral element in the eutrophic water by the animal in the earth soil, plant, microorganism etc.It makes things convenient for, has purified effectively, economically water quality especially not just for plant provides competent nutrient and moisture content; It does not just promote plant-growth, has purified air by plant absorbing carbon dioxide packing, exhalation oxygen especially, has afforested environment.Its water conservation, for the lack of water city provides groundwater feed water continuously, its almost few of water can flow into the ditch pond along surface slope in the lack of water city, enters rivers,lakes and seas.Thereby reach the purpose of whole utilizations of sewage recycling processing, i.e. sewage zero-discharge.Form the benign cycle system of " sewage-biogas-plant-clear water ", what save simultaneously is costly underground sewage network system in the urban construction.What obtain is the energy of clean water source, cleaning, the environment of greening.

Because the zero release sewage dispersion treatment that adopts in the above-mentioned solution is utilized system, it can be very easily directly with a family family, a building high building or the sewage dispersion treatment discharging locally utilization that discharge in the public lavatory, it can effectively utilize organic sphere and botanic huge energy in the Nature to produce biogas, purify waste water, it is the land occupation area hardly, need city underground sewage network system hardly, what save is huge pipeline network construction investment and daily maintenance cost.The purifying treatment that sanitary sewage is produced two kinds of various process of biogas and plant absorbing nutrient by biological fermentation reduces cost of sewage disposal conveniently, effective, economic, practical, preserves the ecological environment.It not only alleviates the short water supply situation in lack of water city, and handles green belt, the energy of groundwater feed water, ozone, cleaning continuously for the city provides the vivifying purification of water quality of a slice.Various jars in the system, pipe unit are produced by batch by batch production and are reduced cost, and are convenient to popularize and popularization.It very easily use device at the head pressure of building eminence, eutrophic water is offered the hill park green land of corresponding eminence, plant such as factory farming vegetable soilless culture, roadside greening isolation strip on the urban architecture roof, promote that City Building develops towards ecological three-dimensional direction, enlarged the green coverage in retaining self-restraint district, city, promote the expansion significantly of regional vegetation cover, reduce soil erosion, help urban ecological environment.So just both alleviated the contradiction of shortage of water resources, can alleviate water again pollutes, improve urban air-quality, promote benign cycle, turn waste into wealth, especially the rural area for the wide world provides economical and practical biogas, fertilizer and water, solves a huge sum of money problem of thorny sewage discharge in current villages and small towns and pipe network facilities.Greatest benefit is effectively to collect to utilize 80,000,000,000 tons/year sewage resource, and it is a times of 44,000,000,000 tons of China's " south water to north " engineering year water transfer total amounts! And cost is low, instant effect.In the rural area, it can constitute huge " sewage cellar for storing things " water storage project system very easily, spreads all over the country to disperse to utilize sewage resource; In the city, it can constitute huge " high block " biogas engineering system very easily, each large, medium and small cities and towns that spread all over the country are collected and are utilized the biogas resource, the only shared collecting methane station of several buildings high building, just win biogas amount than rural area one hundred houses methane-generating pit, the energy is concentrated, and convenient for the combustion gas car provides energy supply, what reduce simultaneously is the discharging of vehicle exhaust and two kinds of different greenhouse gases of biogas.Its great advantage is economy, water saving, energy-saving and environmental protection.

(4), description of drawings

Below in conjunction with drawings and embodiments the present invention is made and to further describe.

Fig. 1 is the fundamental diagram that zero release sewage dispersion treatment of the present invention is utilized system.

(5), specific implementation method

As shown in Figure 1, when sanitary sewage poured fermentor tank 2 by blow-off pipe 1, the energy of universal gravity constant was scratched under the effect of mixing diversion trench 11 at gravity and is formed vortex, scratched and mixed the sewage of sending out in the reward jar 2.Sewage is by flow into successively in one to a plurality of the reward jar 2 communicating pipe 12, rise to sewage space surface in the fermentor tank 2 through the have an effect biogas that produces of anaerobies microorganism, the pressure that produces increases with the increase of biogas amount, force the eutrophy sewage after the fermentation, in the water collect tank 9 in the hydraulic pressure position-limiting tube 7 inflow decentralized sewage systems, the eutrophy sewage that water collect tank 9 is collected after anaerobically fermenting is handled by the water pipe 10 of band valve switch, is irrigated on the plant landscape ground 14.Hydraulic pressure position-limiting tube 7 also plays the maximum water level in the do qualification fermentor tank 2, guarantees to leave in the fermentor tank 2 enough biogas spaces.Biogas with pressure is constantly by in the pressure limiting valve 6 input biogas jars 4 that have vapor pipe.Biogas jar 4 works to do accumulation of energy.Escape pipe 3 output biogas by having valve during power consumption are used for generating or heat supply.Pressure limiting valve 6 plays the lowest water level line in the do qualification fermentor tank 2, prevents that pressure from making biogas pass through 7 leakages of hydraulic pressure position-limiting tube too greatly.Mud discharging valve 13 in the fermentor tank 2 can be discharged the mud at the bottom of being deposited on jar, for farm crop provide organic fertilizer.Upflow tube 8 on the water collect tank 9 can allow the water that overfills overflow on the plant landscape ground 14 in the plant water purifying system; The plant water purifying system is the huge Sewage treatment systems of nature, and it absorbs, digests, decomposes nutrient, moisture content and various mineral element in the eutrophic water by the animal in the earth soil, plant, microorganism etc., and what flow into ditch pond 15 at last is water purification; The height and the position of various jars of pipes of support 5 supporting controls.Constitute the natural ecosystems that a zero release sewage dispersion treatment is utilized.Thereby reach the purpose of whole utilizations of sewage recycling processing.Form the benign cycle system of " sewage-biogas-plant-clear water ", i.e. sewage zero-discharge.

Claims (1)

1, zero release sewage dispersion treatment utilizes system to comprise biological fermentation system, collecting methane system, decentralized sewage system, plant water purifying system and support; The biological fermentation system comprises by a plurality of fermentor tanks of ganging up mutually communicating pipe, the inlet end and the blow-off pipe of fermentor tank interconnect, and water outlet end is connected with the hydraulic pressure position-limiting tube, and the upper end has the pressure limiting valve of vapor pipe, there is the mud discharging valve lower end, is provided with gravity in jar and scratches and mix diversion trench; The collecting methane system comprises that an end of biogas jar and the pressure limiting valve that fermentation end upper end has vapor pipe are interconnected, and the other end is by the escape pipe output biogas that has valve; Decentralized sewage system comprises that the inlet end of water collect tank is connected with the hydraulic pressure position-limiting tube of fermentor tank water outlet end, and the water pipe of water outlet end connecting band valve switch enters the plant water purifying system with water, and the water collect tank top is provided with upflow tube; The plant water purifying system comprises the vegetable soilless culture pond, plant landscape ground and ditch ground, and the self-purification capacity that makes full use of physical environment is disposed of sewage; The height and the position of various jars of pipes of bracket supports control, it is characterized in that: described zero release sewage dispersion treatment is utilized system, comprise by the sewage after the biological fermentation system handles entering the plant water purifying system, directly utilize biological fermentation to produce the distributing purifying treatment sewage of two kinds of various process of biogas and plant absorbing nutrient by the decentralized sewage system conveying.