CN1090557A

CN1090557A - Facultative waste water containing pig excrement treatment process and device thereof

Info

Publication number: CN1090557A
Application number: CN93100447A
Authority: CN
Inventors: 许仁寿; 孙保霖
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-02-02
Filing date: 1993-02-02
Publication date: 1994-08-10
Anticipated expiration: 2013-02-02
Also published as: CN1050821C

Abstract

The present invention system is about a kind of waste water containing pig excrement treatment process and device thereof.Solve and adopt biogas fermentation poor processing effect, expensive, the secondary pollution problems of equipment.The present invention includes raw wastewater pond, settling pit, fermentation vat, adjustment pond, aeration tank and settling tank, in the raw wastewater pond, establish the mixing agitator; Be provided with the slag smashing tube that cooperates with gas blower in the settling pit; Fermentation vat is established the water level gauge of training wall, flow-stopping plate and control liquid stream, and adjusting in the pond has aerating apparatus and pump, conduit is arranged at the bottom of the settling tank, and draw back active sludge by pump, utilizes microorganism to make discharge water up to standard.Can be widely used in husbandry.

Description

Facultative waste water containing pig excrement treatment process and device thereof

The present invention is meant a kind of facultative waste water containing pig excrement treatment process and device thereof especially about a kind of waste water containing pig excrement treatment process and device thereof.

Herding contaminated wastewater environmental facies are when serious.Now adopt biogas fermentation to handle mostly, being subject to general solid-liquid separation technique can't carry out really, and causes biochemical oxygen demand (BOD) (BOD) and suspension solid substance (SS) in the discharge water higher, so its poor processing effect, need to add chemical precipitation agent or condensing agent, may cause secondary pollution; Now the most purpose of wastewater processing technology is obtaining biogas in addition, and right biogas is as fuel such as generating, automobile, boilers, and its equipment is huge, expense is expensive, and result of use is also not good enough.Animal excretion is adopted the mechanical solid-liquid separate mode, and after soon pig manure picked up, fortune was made compost treatment outside the venue in addition, and like this, the pig manure that picks up is very unstable, can distribute stench at normal temperatures, and fertilizer itself is worth also low, so both unhygienic, uneconomical again.

The object of the present invention is to provide a kind of method and device thereof that has anaerobic fermentation and the effective using microbe technical finesse of the good gas resolution of active sludge herding waste water concurrently, make discharge water standard compliant facultative waste water containing pig excrement treatment process and device thereof.Here need not to add any chemical precipitation agent and condensing agent and can effectively decompose the organic suspension thing, reduce biochemical oxygen demand (BOD) and suspension solid substance; Here utilize microbial technique, make waste water reach the nature solid-liquid separation, and produce a kind of organic fertilizer byproduct that more can improve the soil of the high economic worth of tool that can directly use.

The objective of the invention is to reach like this: facultative waste water containing pig excrement treatment unit, comprise raw wastewater pond, settling pit, fermentation vat, adjustment pond, aeration tank and settling tank, it is characterized in that the raw wastewater pond be one collect waste water containing pig excrement generally be dark about 1.8 meters pond, pond, be provided with in it with solid substance such as pig manure with urinate the unlikely deposition of water thorough mixing and at the bottom of the pond, mix agitator; Settling pit is one to erect general rectangular pond shape structure from ground, a water outlet is established in its bottom side, below, and establish one in this water outlet outside and discharge the outer outlet valve in pond in order to the long-pending sand of cleaning, wherein and be provided with a slag smashing tube and a gas blower of urinating mixed solution and its fragmentation being broken up with the pig manure of pumping in the raw wastewater pond; Fermentation vat is dark 1.5～2.0 meters rectangle form pool in a pond, being provided with in it to slow down in the pond flow velocity increases waste water in training wall, the flow-stopping plate in the reaction times of fermentation vat, and is provided with the control water level and the waste water after will ferment automatically enters water level gauge in the adjustment pond; Adjusting the pond and be one can hold through the waste water behind the anaerobic fermentation do a short stay earlier before entering the aeration tank, pond, cave with buffering current regulating pondage and water quality, be provided with an aerating apparatus that improves water oxygen level earlier to give in it, and be provided with to pump the submerged pump of waste water to the aeration tank reaction; The aeration tank is the aeration pond of persistence operation, be provided with in the pond to supply with an aerating apparatus of abundant oxygen level, and be provided with in order to regulate a small-sized water reservoir of influent waste water amount and controlling reaction time, settling tank is generally to be funnelform at the bottom of the pond, will to be flowed in this settling tank by overflow port through the aeration tank treated water, with precipitate and separate and gather the pond, cave of reclaiming the active sludge in the overflow water, wherein this settling tank peripheral hardware one with mud from the conduit at the bottom of the pump and that conduit is extracted out stretches into the pond at the bottom of the pond.Wherein the capacity of this raw wastewater pond and this fermentation vat depends on a number that feeds pigs, and every pig movement every day and wash-down water are heavy with 45～50 kilograms of calculating, and it is good that this fermentation vat capacity needs to store 2.5～4 days pre-capacity of spending in addition.Wherein the slag smashing tube in this settling pit is about 1.5 meters, be provided with on its tail end surface, make itself and urine water uniform mixing to break up broken pig manure piece, and the heavier silt particle dispersed deposition of proportion is gone out pig manure piece in the raw wastewater pond and urine water in mat gas blower air pressure at the bottom of the pond through slag smashing tube punching press scattering many apertures.Wherein the body of wall that lies in some formation water conservancy diversion bends of the horizontal five equilibrium setting of fermentation vat of the training wall in this fermentation vat is formed, this training wall height account for the pond high 3/4.Wherein the system of the flow-stopping plate in this fermentation vat is across the pond face, and flushes with the pond face, is provided with one grade apart from 3～5 meters approximately and flows plate, and this grade stream plate length is about 30～60 centimeters, does not wait long size about this grade stream plate can be made into; Be to increase the water intake velocity of waste water, partly be located at the water conservancy diversion conduit top that waste water enters with flow-stopping plate is short, for the flow velocity that slows down fermentation water and discharge rate with above the long conduit of partly being located at nearly water port of flow-stopping plate.Wherein can install an automatic slurry scraper with the fermentation pig manure that sweeps come-up on this fermentation vat, and establish one in this fermentation vat outside storing the poultry hopper of the fermentation animal manure of drawing together, but this leg frame of drawing together the excrement machine automatically on flow-stopping plate, its crossbeam that sets up for support of mat.A kind of facultative pig manure urine treatment process, this method comprises that raw wastewater pond collection combination treatment, the broken diffusing sand setting processing of settling pit, the good gas disaggregating treatment of aeration tank active sludge and settling tank reclaim active sludge treatment, it is characterized in that: a. collects waste water containing pig excrement earlier and feeds gas mat air-flow, mixes agitator with gas blower through the raw wastewater pond, solid substances such as pig manure piece can be deposited at the bottom of the pond, make the good turnover rate of maintenance in the raw wastewater pond; B. mat one gas blower is with in the waste water suction slag smashing tube in the raw wastewater pond, and make this slag smashing tube place settling pit about 1/3 place highly at the bottom of the pond, the aperture of air pressure on slag smashing tube of pig manure piece and urine water mat gas blower sent forth, make the heavier silt particle of proportion directly be deposited at the bottom of the pond, and make pig manure liquid can become uniform admixture, in order to the anaerobically fermenting decomposition of step down; C. enter fermentation vat along with the flow process of training wall and flow-stopping plate and flow rate control to carry out anaerobic fermentation, the time of anaerobic fermentation needed approximately through 1.8～3 days, make the organic substance fully fermenting in this pig manure decompose come-up and accumulate in liquid level, form the natural shielding layer of one deck fermentation pig manure, with air-isolation, make the hotbed that forms an order of succession under the liquid level, become a kind of organic fertilizer that has high value and can directly use in order to the pig manure fully fermenting, utilize again and draw together the fermentation pig manure that the excrement machine has been drawn together the upper strata automatically automatically, and reserve the fermentation pig manure shielding layer of a thickness, decompose in order to continuing fermentation, the fermentation water after to be decomposed is controlled its overflow through liquidometer again and is gone into to adjust in the pond; D. utilize to adjust the pond regulating the flow that buffering fermentation water enters the aeration tank, and mat adjusts the aerating apparatus in the pond, dissolved oxygen in advance, mat submerged pump fermentation water that oxygen level is improved is evacuated in the water reservoir of top, aeration tank again, to regulate the water yield that flows into the aeration tank; E. the active sludge of turning out in a large number in the mat aeration tank has carried out the gas decomposition reaction, with the organic suspension thing in the further decomposing and fermenting water, and the aerating apparatus in the mat pond improves constantly dissolved oxygen amount required in the water supply in order to organism and organic suspension thing in the complete water of decomposition, makes biochemical oxygen demand (BOD) in the water and suspension solid substance reduce to paper; F. the clean clear water part that after the complete decomposition reaction of active sludge, produces, in this settling tank, can separate gradually with active sludge, clear water can flow out via overflow weir in the above, active sludge then can arrive at the bottom of the pond in natural sedimentation, wherein but this sedimentary active sludge mat conduit and pump are extracted out, about 1/4 sends back in the aeration tank, all the other active sludge of about 3/4 is delivered in the fermentation vat again, and making it mix one with the fermentation pig manure becomes organic fertilizer.

Waste water of the present invention place omnidistance reaction required time is very short, only need 5.5 days, existing method of wastewater treatment of the same type then needs 20 days, even 30 days, the present invention takes up little room, per thousand its sewage treatment equipments of pig farm only need 40 level grounds at the most, and economic worth is remarkable, the pig manure after the fermentation, density proportion alleviates, naturally the floating upward water surface reaches the purpose of solid-liquid separation, and the physical and chemical stability of fermentation pig manure tool height, therefore can be not smelly, do not attract mosquitos and flies yet, the fertilizer efficiency height, easily by plant absorbing, favourable improving the soil.The present invention gives full play to action of microorganisms, herding waste water such as pig manure urine are after the present invention handles, can obtain to meet the water of releasing of national standard, the mat microbial technique decomposes organic matter and the organic suspension thing in the waste water simultaneously, reduce biochemical oxygen demand (BOD) and suspension solid substance in the waste water, and need not to add again any chemical precipitation agent and condensing agent, do not cause secondary pollution.

Below by accompanying drawing and get a preferred embodiment the invention will be further described.

Fig. 1 is the inventive method schema.

Fig. 2 is the flat schema of apparatus of the present invention.

Fig. 3 is a fermentation vat sectional view of the present invention.

Among the figure: 1 raw wastewater pond, 2 settling pits, 3 fermentation vats, 4 adjust the pond, 5 aeration tanks, 6 settling tanks, 7 air, 8 pig houses, 9 long-pending sand, 10 organic fertilizer, 11 mix agitator, 12 active sludge, 21 slag smashing tubes, 22 outlet valves, 31 training walls, 32 flow-stopping plates, 33 draw together the excrement machine automatically, and 34 hold hopper, 41,52 aerating apparatuss, 51 water reservoirs, A1, A2 gas blower, P1, P2 pump.

The treatment process of facultative waste water containing pig excrement shown in Fig. 1,2 system operates pig manure waste water in regular turn via raw wastewater pond 1, settling pit 2, fermentation vat 3, six unit operation steps such as adjustment pond 4, aeration tank 5 and settling tank 6, wherein raw wastewater pond 1 is to be one to dig pond dark and then that form with the reinforced concrete structure building downwards, wherein be provided with and mix agitator 11, utilize gas blower A1 that air is squeezed into by conduit and cause sinuous flow in the pond, make waste water energy thorough mixing.Settling pit 2 is one to erect general rectangular reinforced concrete structure pond from ground, be provided with a slag smashing tube in it, A2 matches with gas blower, caked pig manure fragmentation is broken up, at the bottom of the heavy pond of silt particle, the outlet overflow that pig manure waste water is then offered by settling pit 2 tops and going out enters fermentation vat 3 via conduit from the ingress of about 1/4 height at the bottom of the pond of fermentation vat 3, and long-pending sand is then discharged outside the ponds from outlet valve 22.Fermentation vat 3 also can be square pond, laterally wait in the pond and be arranged with some training walls 31 that cause bend, it is for to erect at the bottom of the pond apart from about 1/4 eminence of pond face, every about 4～5 meters some flow-stopping plates 32 are set vertically downward from the pond face in addition, and utilize flow-stopping plate to be bearing, set up an automatic slurry scraper 33, the fermentation pig manure that will float on liquid level is scraped holding in the hopper 34 of fermentation vat 3 outsides, and the waste water water inlet of fermentation vat 3 should be tried one's best near water outlet at the bottom of the pond then at the close pond of end in addition in pond face again.Adjusting pond 4 is a reinforced concrete rectangle form pool body, is equipped with aerating apparatus 41 and pump P1 in the pond.Aeration tank 5 is the aeration pond of persistence operation, be provided with aerating apparatus 52 in the pond, to increase dissolved oxygen amount, waste water is introduced into a small-sized water reservoir 51 that is set up in Chi Ding, enter aeration tank 5 to regulate quantitative water, the a large amount of active sludge of cultivating (a kind of microorganism) of mat in the pond, make it carry out sufficient aerobic activated sludge reaction, with the organism in the digest and decompose waste water, make the organic suspension thing in the waste water decompose sedimentation, reduce biochemical oxygen demand (BOD) (BOD) and suspension solid substance (SS) in the water, reach and meet country's water emission standard of releasing.Settling tank 6 is last unit in the flow process of the present invention, be deposited in the active sludge at the bottom of the pond, mat pump P2 extracted it out at the bottom of an available conduit stretched into the pond, and whole active sludge that will extract about 1/4 send aeration tank 5 back to, surplus about 3/4 send fermentation vat 4, visible remarkable in economical benefits of the present invention.

Claims

1, facultative waste water containing pig excrement treatment unit, comprise raw wastewater pond, settling pit, fermentation vat, adjustment pond, aeration tank and settling tank, it is characterized in that the raw wastewater pond be one collect waste water containing pig excrement generally be dark about 1.8 meters pond, pond, be provided with in it with solid substance such as pig manure with urinate the unlikely deposition of water thorough mixing and at the bottom of the pond, mix agitator; Settling pit is one to erect general rectangular pond shape structure from ground, a water outlet is established in its bottom side, below, and establish one in this water outlet outside and discharge the outer outlet valve in pond in order to the long-pending sand of cleaning, wherein and be provided with a slag smashing tube and a gas blower of urinating mixed solution and its fragmentation being broken up with the pig manure of pumping in the raw wastewater pond; Fermentation vat is dark 1.5～2.0 meters rectangle form pool in a pond, being provided with in it to slow down in the pond flow velocity increases waste water in training wall, the flow-stopping plate in the reaction times of fermentation vat, and is provided with the control water level and the waste water after will ferment automatically enters water level gauge in the adjustment pond; Adjusting the pond and be one can hold through the waste water behind the anaerobic fermentation do a short stay earlier before entering the aeration tank, pond, cave with buffering current regulating pondage and water quality, be provided with an aerating apparatus that improves water oxygen level earlier to give in it, and be provided with to pump the submerged pump of waste water to the aeration tank reaction; The aeration tank is the aeration pond of persistence operation, is provided with in the pond supplying with an aerating apparatus of abundant oxygen level, and is provided with in order to regulate a small-sized water reservoir of influent waste water amount and controlling reaction time; Settling tank is generally to be funnelform at the bottom of the pond, will to be flowed in this settling tank by overflow port through the aeration tank treated water, with precipitate and separate and gather the pond, cave of reclaiming the active sludge in the overflow water, wherein this settling tank peripheral hardware one with mud from the conduit at the bottom of the pump and that conduit is extracted out stretches into the pond at the bottom of the pond.

2, facultative waste water containing pig excrement treatment unit as claimed in claim 1, it is characterized in that wherein the capacity in this raw wastewater pond and this fermentation vat depends on a number that feeds pigs, every pig movement every day and wash-down water are heavy with 45～50 kilograms of calculating, and it is good that this fermentation vat capacity needs to store 2.5～4 days pre-capacity of spending in addition.

3, facultative waste water containing pig excrement treatment unit as claimed in claim 1, it is characterized in that the slag smashing tube in this settling pit wherein is about 1.5 meters, be provided with on its tail end surface, make itself and urine water uniform mixing to break up fragmentation at the pig manure piece, and the heavier silt particle dispersed deposition of proportion is gone out pig manure piece in the raw wastewater pond and urine water in mat gas blower air pressure at the bottom of the pond through slag smashing tube punching press scattering many apertures.

4, facultative waste water containing pig excrement treatment unit as claimed in claim 1 is characterized in that the body of wall that training wall in this fermentation vat wherein lies in some formation water conservancy diversion bends of the horizontal five equilibrium setting of fermentation vat forms, this training wall height account for the pond high 3/4.

5, facultative waste water containing pig excrement treatment unit as claimed in claim 1, it is characterized in that the flow-stopping plate system in this fermentation vat wherein is across the pond face, and flush with the pond face, apart from 3～5 meters one grade of stream plate is set approximately, this grade stream plate length is about 30～60 centimeters, does not wait long size about this flow-stopping plate can be made into; Be to increase the water intake velocity of waste water, partly be located at the water conservancy diversion conduit top that waste water enters with flow-stopping plate is short, for the flow velocity that slows down fermentation water and discharge rate with above the long conduit of partly being located at nearly water port of flow-stopping plate.

6, facultative waste water containing pig excrement treatment unit as claimed in claim 1, it is characterized in that to install on this fermentation vat wherein an automatic slurry scraper with the fermentation pig manure that sweeps come-up, and outside this fermentation vat, establish one to store the poultry hopper of the fermentation animal manure of drawing together, but this leg frame of drawing together the excrement machine automatically is on flow-stopping plate, and it is to support the crossbeam that sets up for a mat.

7, a kind of facultative waste water containing pig excrement treatment process, this method comprise that raw wastewater pond collection combination treatment, the broken diffusing sand setting processing of settling pit, the good gas disaggregating treatment of aeration tank active sludge and settling tank reclaim active sludge treatment, is characterized in that:

A. waste water containing pig excrement is collected through the raw wastewater pond earlier and fed gas mat air-flow, mix agitator, solid substance such as pig manure piece can be deposited at the bottom of the pond, make the good turnover rate of maintenance in the raw wastewater pond with gas blower;

B. mat one gas blower is with in the waste water suction slag smashing tube in the raw wastewater pond, and make this slag smashing tube place settling pit about 1/3 place highly at the bottom of the pond, the aperture of air pressure on slag smashing tube of pig manure piece and urine water mat gas blower sent forth, make the heavier silt particle of proportion directly be deposited at the bottom of the pond, and make pig manure liquid can become uniform admixture, in order to the anaerobically fermenting decomposition of step down;

C. enter fermentation vat along with the flow process of training wall and flow-stopping plate and flow rate control to carry out anaerobic fermentation, the time of anaerobic fermentation needed approximately through 1.8～3 days, make the organic substance fully fermenting in this pig manure decompose come-up and accumulate in liquid level, form the natural shielding layer of one deck fermentation pig manure, with air-isolation, make the hotbed that forms an order of succession under the liquid level, become a kind of organic fertilizer that has high value and can directly use in order to the pig manure fully fermenting, utilize again and draw together the fermentation pig manure that the excrement machine has been drawn together the upper strata automatically automatically, and reserve the fermentation pig manure shielding layer of a thickness, decompose in order to continuing fermentation, the fermentation water after to be decomposed is controlled its overflow through liquidometer again and is gone into to adjust in the pond;

D. utilize to adjust the pond regulating the flow that buffering fermentation water enters the aeration tank, and mat adjusts the aerating apparatus in the pond, dissolved oxygen in advance, mat submerged pump fermentation water that oxygen level is improved is evacuated in the water reservoir of top, aeration tank again, to regulate the water yield that flows into the aeration tank;

E. the active sludge of turning out in a large number in the mat aeration tank has carried out the gas decomposition reaction, with the organic suspension thing in the further decomposing and fermenting water, and the aerating apparatus in the mat pond improves constantly dissolved oxygen amount required in the water supply in order to organism and organic suspension thing in the complete water of decomposition, makes biochemical oxygen demand (BOD) in the water and suspension solid substance reduce to paper;

F. the clean clear water part that after the complete decomposition reaction of active sludge, produces, in this settling tank, can separate gradually with active sludge, clear water can flow out via overflow weir in the above, active sludge then can arrive at the bottom of the pond in natural sedimentation, wherein but this sedimentary active sludge mat conduit and pump are extracted out, about 1/4 sends back in the aeration tank, all the other active sludge of about 3/4 is delivered in the fermentation vat again, and making it mix one with the fermentation pig manure becomes organic fertilizer.