CN101709004A - Method for comprehensively treating livestock waste and utilizing resource - Google Patents

Abstract

The invention provides a method for comprehensively treating livestock waste and utilizing resource, which is beneficial for reducing local water quality pollution, improving soil environment, improving ecological environment and promoting the sustainable development of agricultural production. The method is realized by a sewage treating and resource utilizing process and a solid waste treating process. The method for comprehensively treating the livestock waste and utilizing the resource, for a large-scale culturing farm, has the advantages of small sludge quantity, low operating cost and the like by adopting biogas fermentation and ecological combinative technology to treat sewage, has the advantages of economy, high efficiency and resource utilization by adopting composting technology to treat dejection garbage, solves partial production and living energies and living energy by adopting produced marsh gas to generate electricity so as to produce direct economic benefit, develops nuisanceless agricultural product bases and realizes agricultural efficiency by taking produced biogas residues and biogas liquid as nuisanceless organic fertilizers.

Description

Comprehensive treating process of a kind of livestock and poultry refuse and utilization of resources method

(1) technical field

The present invention relates to the sewage dirt treatment technology, is exactly comprehensive treating process of a kind of livestock and poultry refuse and utilization of resources method specifically.

(2) background technology

Along with the fast development of livestock breeding industry, the livestock and poultry fecaluria concentrates generation constantly to increase.Investigation shows that in the livestock and poultry cultivation total amount of sewage discharge of various places, the proportion that the intensive culture field accounts for is bigger.The development of livestock breeding industry and the transformation of the mode of production have promoted growth of agricultural efficiency, increasing peasant income, but have also brought swine manure wastewater to roll up simultaneously and concentrated problem of discharging.

Some objectionable impurities in the ight soil can be dissolved in water as protein, the putrid product of lipid acid (also being the malodorous constitute of ight soil), makes the glassware for drinking water frowziness, thereby has worsened water quality, makes it to be unsuitable for drinking of people and animals.These putrefactive organism matter enter water body, behind microbiological degradation, can liberating nitrogen, eutrophy composition such as phosphorus, and impel in the water hydrobiont such as algae to breed in a large number, cause the eutrophication of water quality.In addition, after the pathogenic micro-organism in the ight soil (or parasite etc.) enters the river course, can carry out rapid diffusion and propagation, infect various diseases directly or indirectly by water body or aquatic animals and plants.

Under anaerobic, feces of livestock and poultry is under the effect of certain micro-organisms, and carbohydrate breakdown is the gas of the band acid smell of methane, organic acid and alcohols; Protein and lipolysis are the compound of cacodorous nitrogenous and sulphur such as ammonia, hydrogen sulfide, thiomethyl alcohol and skatole.These foul smell severe exacerbations the inside and outside atmosphere quality of livestock and poultry farm, the staff produces harm to poultry industry, also can influence livestock and poultry production performance, reduce its level of the productive forces.

Enter the feces of livestock and poultry of soil, organic substance wherein can decompose fully by action of microorganisms originally, not only do not pollute the environment, and can provide plant-growth needed nutritive substance to soil, keep the self-cleaning fertility of soil, but, pile up near the plant because the ight soil accumulation is not manured into soil, surpass the ability of piling up soil digestion, just pollute.In addition, also have some transmissible diseases based on the soil propagation, these pathogenic agent are often can be in soil parasitic or survive in soil many years with forms such as gemma, as anthrax and tetanus etc., the animal (as earthworm, beetle etc.) that many parasites also can live in soil or soil is spread wide, and forms huge potential hazard.

Swine manure wastewater discharges in a large number, surrounding environment has been caused extremely seriously influence, and comprises polluted-water, spreads disease, produces odor pollution air etc., has restricted the Sustainable development of agriculture production.Yet, from another perspective, feces of livestock and poultry itself then is a kind of high-quality organic fertilizer, with biogas is that tie utilizes anaerobic fermentation technology to purify scale pig farm sewage, with composting technology production high-quality fertilizer, and the exploitation biomass energy, reclaim organic manure resource, to administer pollution, environment purification, the recovery energy, fully utilize, improving the ecological environment organically combines, and can build green ecotypical and herd plant, promotes the Sustainable development of agriculture production.

Traditional livestock and poultry waste treatment is purpose usually with the pollutant removal, wasteful energy and waste ample resources.Even adopt the resource recovery also not from the viewpoint of system's overall situation, adopt the simple mode that the refuse waste resources cooperates wastewater treatment that reclaims.

(3) summary of the invention

The object of the present invention is to provide a kind ofly help alleviating local water pollution, the environment of improving the soil, the livestock and poultry refuse comprehensive treating process of improving the ecological environment, promote sustainable development of agricultural production and utilization of resources method.

The object of the present invention is achieved like this: comprehensive treating process of livestock and poultry refuse and utilization of resources method, and by sewage disposal and utilization of resources technology and the realization of solid waste treatment process.

The present invention has following technical characterictic:

(1) described sewage disposal and utilization of resources technology, technical process is as follows:

First via technical process: liquid dung enters the adjusting water collecting basin of being made up of water pump and screen cloth, and the screening reject after sieving enters manure pit, and argol just also enters manure pit, and manure pit obtains biological compost after handling, and biological compost is processed into granulated fertilizer;

The second tunnel technical process: the liquid portion in the liquid dung through overregulating water collecting basin enters hydrolysis acidification pool, enter anaerobic digestor again and be divided into two-way later on, one the tunnel is biogas, another Lu Weizhao liquid, natural pond liquid enters settling tank, and the part natural pond liquid of post precipitation enters double, the aerobic pool and natural pond liquid pool respectively, enters natural pond liquid double, the aerobic pool and enters artificial swamp again, and then enter the waterplant pool, after handling, the waterplant pool is used for field irrigation or discharging;

The Third Road technical process: after handled in liquid precipitate pond, natural pond, partly natural pond liquid entered the natural pond liquid pool, sedimentary natural pond slag and enter the natural pond liquid pool after natural pond liquid through farmland comprehensive utilization becoming high quality agricultural products;

The four tunnel technical process: liquid dung is gone into the hydrolysis acidification pool through the adjusting water collecting basin of being made up of water pump and screen cloth is laggard, and then becoming biogas through anaerobic digestor, biogas is used for marsh gas power generation behind steam separator, thionizer, wet storage holders, dry type spark arrester.

(2) described solid waste treatment process, technical process is as follows:

Do clear excrement, solid-liquid separation excrement slag and mud and be mixed into composting material; Sawdust and the stalk through pulverizing are mixed into compost dressing, and the Secondary Fermentation that becomes thoroughly decomposed is finished in one time fermentation, aerobic stirring then after composting material and the compost dressing mixing adding biological bacteria, sieves at last, packs.

Advantages such as the present invention's a kind of livestock and poultry refuse comprehensive treating process and utilization of resources method adopt biogas fermentation and ecologic assemblage technical finesse plant sewage for the large-scale cultivation field, and it is few to have a sludge quantity, and working cost is low; Adopt composting technology to handle soiled litter, have the advantage of the economical and efficient and the utilization of resources; Adopt the marsh gas power generation that produces, the life of solution part producing is used and can and be lived with energy, produces direct economic benefit; Adopt the natural pond slag, the natural pond liquid that produce to do pollution free organic fertilizer, growth of agricultural efficiency is realized in development non-polluted farm product base.

(4) description of drawings

Fig. 1 is sewage disposal of the present invention and utilization of resources process flow sheet;

Fig. 2 is solid waste processing technological flow figure of the present invention.

(5) embodiment

The invention will be further described for example below in conjunction with accompanying drawing.

Embodiment 1: in conjunction with Fig. 1, Fig. 2, the present invention's a kind of livestock and poultry refuse comprehensive treating process and utilization of resources method are by sewage disposal and utilization of resources technology and the realization of solid waste treatment process.

Described sewage disposal and utilization of resources technology, technical process is as follows:

First via technical process: liquid dung enters the adjusting water collecting basin of being made up of water pump and screen cloth, and the screening reject after sieving enters manure pit, and argol just also enters manure pit, and manure pit obtains biological compost after handling, and biological compost is processed into granulated fertilizer;

The second tunnel technical process: the liquid portion in the liquid dung through overregulating water collecting basin enters hydrolysis acidification pool, enter anaerobic digestor again and be divided into two-way later on, one the tunnel is biogas, another Lu Weizhao liquid, natural pond liquid enters settling tank, and the part natural pond liquid of post precipitation enters double, the aerobic pool and natural pond liquid pool respectively, enters natural pond liquid double, the aerobic pool and enters artificial swamp again, and then enter the waterplant pool, after handling, the waterplant pool is used for field irrigation or discharging;

The Third Road technical process: after handled in liquid precipitate pond, natural pond, partly natural pond liquid entered the natural pond liquid pool, sedimentary natural pond slag and enter the natural pond liquid pool after natural pond liquid through farmland comprehensive utilization becoming high quality agricultural products;

The four tunnel technical process: liquid dung is gone into the hydrolysis acidification pool through the adjusting water collecting basin of being made up of water pump and screen cloth is laggard, and then becoming biogas through anaerobic digestor, biogas is used for marsh gas power generation behind steam separator, thionizer, wet storage holders, dry type spark arrester.

Described solid waste treatment process, technical process is as follows:

Do clear excrement, solid-liquid separation excrement slag and mud and be mixed into composting material; Sawdust and the stalk through pulverizing are mixed into compost dressing, and the Secondary Fermentation that becomes thoroughly decomposed is finished in one time fermentation, aerobic stirring then after composting material and the compost dressing mixing adding biological bacteria, sieves at last, packs.

Embodiment 2: in conjunction with Fig. 1, Fig. 2, technical process of the present invention is described as follows:

One, wastewater treatment and resource recovery process process description:

1, the pre-treatment of waste water:

Sewage enters sewage works by sewer pipe by the place gravity flow, and waste water is earlier through grid, and straw in the removal waste water and big levitated object, waste water flow automatically and enter equalizing tank.

2, waterpower screen cloth:

The waste water that enters water collecting basin pumps into the waterpower screen cloth by pump, with foreign material such as levitated object in the further removal sewage and hairs, more helps anaerobically fermenting and the obstruction of avoiding pipe network.The concentrated manure pits that enter such as scum silica frost that the hydraulic screen mesh screen goes out carry out solid dung and handle.

3, the acidication of waste water:

Because the singularity of herding waste water, fibre content is higher in its waste water, and contains a large amount of suspended particles.The effect of the acidication part suspended matter that is to degrade is converted into simple organic substance with the organism of complexity, improves the biodegradability energy of herding waste water, helps anaerobic digestion.

4, the anaerobic digestion of waste water:

Adopt the anaerobic ferment process of modified form, this technology has characteristics such as floor space is few, CODcr removes the efficient height, shock-resistant ability is strong, management maintenance is convenient.The anaerobism water outlet enters settling tank, and The ecology pond systems is advanced in the settling tank water part, and part is directly utilized.

5, Ecological Disposal:

Ecological Disposal adopts facultative lagoon---the aerobic pool---artificial swamp---waterplant pool---combination process of orchard vegetable irrigation.The gravity flow of anaerobism precipitated outlet water enters facultative lagoon and handles, after facultative lagoon is handled, the waste water gravity flow enters the aerobic pool and is further processed, waste water gravity flow after handle on the aerobic pool enters artificial swamp, enter the waterplant pool then, the water after handle on the waterplant pool can carry out the irrigation of orchard, vegetables etc.

Two, the storage of biogas and utilization explanation

Biogas is as the clean and effective energy, do not allow outwards discharging and form pollution for the second time, biogas must be utilized fully, biogas enters the biogas gas-holder after air water separator, desulfurizing and purifying tower, metering, biogas is after process stops temper device, be used for generating, the marsh gas power generation unit is installed, solve the electrical problem of plant's day-to-day operation electricity consumption and illumination.

Three, fertilizer processing spec:

By manure pit, adopt to stack the mode of raw material → add biological bacteria → stir → ferment → screen → finished product → packing → warehouse-in, the production fertilizer.

Claims (3)

1. livestock and poultry refuse comprehensive treating process and utilization of resources method is characterized in that: comprehensive treating process of livestock and poultry refuse and utilization of resources method, realized by sewage disposal and utilization of resources technology and solid waste treatment process.

2. a kind of livestock and poultry refuse according to claim 1 comprehensive treating process and utilization of resources method is characterized in that: described sewage disposal and utilization of resources technology, and technical process is as follows:

First via technical process: liquid dung enters the adjusting water collecting basin of being made up of water pump and screen cloth, and the screening reject after sieving enters manure pit, and argol just also enters manure pit, and manure pit obtains biological compost after handling, and biological compost is processed into granulated fertilizer;

The second tunnel technical process: the liquid portion in the liquid dung through overregulating water collecting basin enters hydrolysis acidification pool, enter anaerobic digestor again and be divided into two-way later on, one the tunnel is biogas, another Lu Weizhao liquid, natural pond liquid enters settling tank, and the part natural pond liquid of post precipitation enters double, the aerobic pool and natural pond liquid pool respectively, enters natural pond liquid double, the aerobic pool and enters artificial swamp again, and then enter the waterplant pool, after handling, the waterplant pool is used for field irrigation or discharging;

The Third Road technical process: after handled in liquid precipitate pond, natural pond, partly natural pond liquid entered the natural pond liquid pool, sedimentary natural pond slag and enter the natural pond liquid pool after natural pond liquid through farmland comprehensive utilization becoming high quality agricultural products;

The four tunnel technical process: liquid dung is gone into the hydrolysis acidification pool through the adjusting water collecting basin of being made up of water pump and screen cloth is laggard, and then becoming biogas through anaerobic digestor, biogas is used for marsh gas power generation behind steam separator, thionizer, wet storage holders, dry type spark arrester.

3. a kind of livestock and poultry refuse according to claim 1 comprehensive treating process and utilization of resources method is characterized in that: described solid waste treatment process, and technical process is as follows:

Do clear excrement, solid-liquid separation excrement slag and mud and be mixed into composting material; Sawdust and the stalk through pulverizing are mixed into compost dressing, and the Secondary Fermentation that becomes thoroughly decomposed is finished in one time fermentation, aerobic stirring then after composting material and the compost dressing mixing adding biological bacteria, sieves at last, packs.

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