CN104961289A

CN104961289A - Micro-nano aeration high-efficiency biotreatment technical system for livestock and poultry breeding wastewater

Info

Publication number: CN104961289A
Application number: CN201510148840.7A
Authority: CN
Inventors: 岳亚兵; 张维昊; 梁威
Original assignee: 湖北源中清生物环保科技有限公司
Priority date: 2015-03-27
Filing date: 2015-03-27
Publication date: 2015-10-07

Abstract

The invention discloses a micro-nano aeration high-efficiency biotreatment technical system for livestock and poultry breeding wastewater, which belongs to the field of wastewater treatment. The micro-nano aeration high-efficiency biotreatment technical system comprises a solid-liquid separating sieve, a water volume adjusting tank, an aeration floating sedimentation tank, a facultative reaction tank, a micro-nano aeration high-efficiency biotreatment tank and a biotreatment tank. With the technical system provided by the invention, the treated livestock and poultry breeding wastewater can reach standards prescribed in Pollution Discharge Standards of Livestock and Poultry Breeding Industry (Secondary Draft for Comment) which is about to issue, and capital construction cost and operation cost for wastewater treatment are low.

Description

A kind of micro-nano aeration high-performance bio treatment technology system of livestock breeding wastewater

Technical field

The invention belongs to field of waste water treatment, more particularly, is a kind for the treatment of system of livestock breeding wastewater.

The invention still further relates to the method for the pollutent such as organism, inorganics, microorganism, pathogenic bacteria utilized in said system process breeding wastewater.

Background technology

For satisfied society is increasingly to the demand of the products such as meat egg, China's livestock and poultry breeding industry is rapidly developed.Along with the high speed development of livestock and poultry breeding industry, pollutent, particularly breeding wastewater that livestock and poultry breeding industry produces, the problem of environmental pollution caused is also outstanding day by day.Breeding wastewater contains livestock and poultry urine, ight soil residue, food-residue etc., complicated component, belongs to typical " three is high " waste water, i.e. high organic concentration, high concentration of nitrogen and phosphorus, high cause of disease risk, causes great difficulty to wastewater to reach standard process.Along with the enforcement of " livestock and poultry breeding scale pollution prevention ordinance " and new " environmental law ", and the improving constantly of " livestock and poultry breeding industry pollutant emission standard ", livestock breeding wastewater process qualified discharge becomes the development bottleneck of livestock and poultry breeding industry just gradually.

Comprehensive utilization and the large class of process qualified discharge two are mainly contained to the treatment process of mass-producing waste water of livestock poultry both at home and abroad.The comprehensive utilization of breeding wastewater, the multi-layer that can realize biomass resource in theory utilizes, and is conducive to building the ecological agriculture and agricultural sustainable development.But, due to the restriction of the aspect such as anaerobic treatment degree and comprehensive utilization place before current China livestock and poultry cultivation way to manage, comprehensive utilization, be difficult to the pollution problem avoiding breeding wastewater, the less enforcement comprehensive utilization of current China breeding wastewater.For process qualified discharge, the technical process adopted both at home and abroad is roughly similar, i.e. solid-liquid separation one anaerobic digestion one aerobic treatment.Because the livestock and poultry breeding industry of China belongs to small profit trade, the investment of building similar environment-friendly engineering is comparatively large, working cost is higher, livestock and poultry cultivation enterprise be reluctant to build or build and need not, cause livestock breeding wastewater to become one of current primary pollution source of China.Therefore, development facility less investment, working cost are low, manageability safeguards and ideal treatment effect, reach the livestock breeding wastewater treatment system of discharging standards, have become the key point solving livestock and poultry breeding industry development and rural environmental protection.

Summary of the invention

The object of the present invention is to provide a kind of micro-nano aeration high-performance bio treatment technology system of livestock breeding wastewater.

Another object of the present invention is a kind of method providing pollution substance such as organism, inorganics, microorganism, pathogenic bacteria utilized in said system process breeding wastewater.

For achieving the above object, micro-nano aeration high-performance bio treatment technology system provided by the invention, comprising:

Solid-liquid separation sieve: suspended particulate in the former water of preliminary removal;

Runoff investigation pond: mud discharging mouth is offered in bottom, the water outlet in runoff investigation pond, after secondary solid-liquid separation sieve removes suspended particulate further, flows into micro-nano aeration floating except pond;

Aeration is floating except pond: water-in is provided with flocculation agent chemicals dosing plant, plant flocculation agent is joined micro-nano aeration with water inlet floating except in pond, micro-nano aerator produces a large amount of micro-nano bubble, pipeline is established to spill into water body by pond base fabric, and by the particulate matter jacking of conglomerate in water body to the water surface, by air supporting slag scraper, water surface scum silica frost is cleaned removal, water outlet flow to double oxygen reaction tank;

Double oxygen reaction tank: this reaction tank utilizes the effects such as air natural reaeration, hold concurrently the microenvironment of oxygen in realization response pond, each quasi-microorganism carries out biological degradation under the envrionment conditionss such as aerobic/facultative/anaerobism and decomposition respectively, for follow-up high-performance bio process creates conditions.

Micro-nano aerated conduit and equally distributed high-performance bio ball carrier is furnished with in micro-nano aeration high-performance bio treating pond; The working time of micro-nano aerator is by microcomputer control; Carbon nano fiber matrix, natural nutrition base and high-effective microorganism compound strain is filled with in high-performance bio ball carrier; Water outlet flow to biological purifying tank.

Plant one or more waterplant in black algae, hornwort, watermifoil, water caltrop, eel grass in biological purifying tank respectively, put one or more hydrocoles in the freshwater mussel of certain density, spiral shell, loach, silver carp, bighead in a suitable place to breed.

Provided by the inventionly above-mentioned micro-nano aeration high-performance bio treatment system is utilized to carry out the method for livestock breeding wastewater process:

Livestock breeding wastewater tentatively removes suspended particulate through one-level solid-liquid separation sieve, flows in runoff investigation pond, sewage leaves standstill in runoff investigation pond, and upper strata sewage removes further through secondary solid-liquid separation sieve that to flow to aeration after suspended particulate floating except pond, and layer deposition mud is discharged by mud discharging mouth at the bottom of pond, plant flocculation agent is added in the floating front end, pond of removing of aeration, it is that diameter is at nanometer extremely micron-sized micro-bubble that micro-nano aerator produces sufficient micro-nano bubble, there is dissolved oxygen efficiency high, aqueous vapor contact area is large, the features such as in water the residence time is long, and there is oxygenation, deodorization, decomposing organic matter, reduce COD, kill the effect of pathogenic bacteria and microorganism, in sewage, insoluble substance floats in except pond by the stirring of micro-nano bubble and jacking at micro-nano aeration, be condensed into cotton-shaped particulate matter floating and collect in pool surface, by air supporting slag scraper, surface scum is removed, remove insoluble substance, the water outlet that aeration floats except pond enters double oxygen reaction tank, by the biological degradation of many microenvironments such as aerobic/facultative/anaerobism, further for organism in sewage biological degradation is become material or the small particles of pollution thing of solubility, the effluent stream after oxygen reaction tank process of holding concurrently is to micro-nano aeration high-performance bio treating pond, sewage is in micro-nano aeration high-performance bio treating pond, and under different dissolved oxygen environment, in high-performance bio ball carrier, the Degradation of complex microorganism bacterial strain removes dissolved organic matter further, and synchronously realizes denitrogenation dephosphorizing, the water outlet of biological treatment tank flow to biological treatment tank, through the absorption of waterplant and hydrocoles, utilization, conversion, discharges after reaching standard.

In described system, mud, micro-nano aeration that solid particulate matter, runoff investigation pond that solid-liquid separation sieve is separated are discharged float the scum silica frost etc. of discharging except pond, all as biological organic fertilizer raw materials for production, carry out compost fermentation, realize resource recycling.

The present invention adopts the theory of high efficiency, low cost process livestock breeding wastewater, use new technology, novel material, mechanical means easy to use, physics and chemistry method, biological process and ecological method, significantly reduce cost of sewage disposal, breeding wastewater reaches Treated sewage reusing standard, innoxious, resource utilization effect is remarkable, essentially eliminates the impact of aquaculture wastewater process on surrounding enviroment.Simultaneously in line with the theory of recycling economy, constant regeneration and ecological engineering, fully reclaim the utilized material in sewage treatment process, pollution plot engineering is become resource recovery and produce process.Native system has the effects such as good deodorization and discoloration, degradation of organic substances, denitrogenation dephosphorizing, inactivating microbial and pathogenic bacteria, and water outlet reaches emission standard.

Present invention process is compact, floor space is less, it is easy to run, through native system process go out that water clarity significantly improves, water quality is good, ecological safety, and less investment, instant effect.

Accompanying drawing illustrates:

Fig. 1 is the process flow sheet of the application.

Wherein:

1. be that one-level solid-liquid separation screen cloth is 2. for secondary solid-liquid separation screen cloth

1 is former pond

2 is runoff investigation pond

3 is that micro-nano aeration is floating except pond

4 is oxygen reaction tank of holding concurrently

5 is micro-nano aeration high-performance bio treating pond

6 is biological purifying tank

7 is qualified discharge pond

Embodiment:

The object of the present invention is to provide a kind of nanometer aeration high-performance bio treatment technology system of livestock breeding wastewater, effectively can remove the method for pollution substance and pathogenic micro-organism etc. in breeding wastewater.

The nanometer aeration high-performance bio treatment technology system of a kind of livestock breeding wastewater provided by the invention, its primary structure comprises:

One-level solid-liquid separation sieve, is made up of 40-80 order stainless steel mesh, and mesh screen is 30-45 ° of oblique angle.Breeding wastewater flows through screen cloth under gravity, and in waste water, bulk and particulate solid particulate matter are trapped within slanted screen on the net, and with gravity landing to collecting tank; Sewage then flows into runoff investigation pond.

The mud staticly settled mud discharging mouth bottom runoff investigation pond is discharged; It is floating except pond that effluent stream after leaving standstill is sieved to micro-nano aeration through secondary solid-liquid separation.Semi-enclosed 45 ° of tilting cylinders that secondary solid-liquid separation sieve is made up of 100-160 order stainless steel mesh.Sewage flows into from the online portion of trommel screen, and flow under the influence of gravity into micro-nano aeration and float except pond, insoluble particulates is trapped on trommel screen net surface, under the stripping effect that action of gravity and the cylinder of oblique-roller rotate, falls in collecting tank.

Sewage, when flowing into micro-nano aeration and floating except pond, instills plant flocculation agent by medicine system.Floating except in pond at aeration, the insoluble substance in sewage assembles agglomerating under the throwing out of plant flocculation agent and at the stirring backwater effect float downward of micro-nano bubble to the water surface, scum silica frost is removed in collecting tank by air supporting slag scraper.

The floating water outlet except pond enters double oxygen reaction tank.Oxygen reaction tank of holding concurrently has the polynary microhabitats such as aerobic/facultative/anaerobism, and for difference in functionality monoid microorganism creates good microenvironment, particulate form pollutent is degraded by microorganisms into pollutent or the CO of solubility ₂, the product such as water, water quality is tentatively improved.

The effluent stream nanometer aeration high-performance bio treating pond in a subtle way that water quality is tentatively improved.Micro-nano aeration high-performance bio treating pond inner bottom part is furnished with micro-nano aerated conduit, is uniformly distributed high-performance bio ball carrier in pond.Novel carbon nano-fiber matrix, natural nutrition base and high-effective microorganism composite flora is filled with in high-performance bio ball carrier, under the different aerobic environments that micro-nano aeration provides, the growth enrichment of high-effective microorganism composite flora also forms microbial film, form aerobic, anoxic, anaerobic state from outside to inside successively, under the microorganism synergies such as nitrifier, denitrifying bacteria, polyP bacteria, realize efficient denitrogenation dephosphorizing, the organism in sewage is converted into CO ₂and water, nitride converted is nitrogen or cell tissue, and phosphate conversion is cell tissue.

The sewage that water quality is improved further flows into biological purifying tank, the waterplant such as black algae, hornwort, watermifoil, water caltrop, eel grass are planted respectively in pond, and throw in the hydrocoles such as freshwater mussel, spiral shell, loach, carp, nutritive substance remaining in sewage is converted into the biomass of waterplant or hydrocoles, by the measure such as periodical reaping, results, nutritive substance is removed from water body.

Demonstrate,prove according to one embodiment of present invention, breeding wastewater various pollutant monitoring index after process of the present invention is all better than current discharging standards.

Claims

1. a micro-nano aeration high-performance bio treatment technology system for livestock breeding wastewater, it is floating except pond, the compositions such as oxygen reaction tank, micro-nano aeration high-performance bio treating pond, biological treatment tank of holding concurrently that it comprises solid-liquid separation sieve, runoff investigation pond, the aeration of connecting successively.The floating pond of removing of described aeration is built-in with a micro-nano aerator and an air supporting slag scraper; Micro-nano aerator and high-performance bio ball carrier is configured with in micro-nano aeration high-performance bio treating pond; Multiple waterplant and hydrocoles is configured respectively in biological treatment tank.

2. the micro-nano aeration high-performance bio treatment technology system of livestock breeding wastewater according to claim 1, is characterized in that: this system comprises two-stage solid-liquid separation sieve to remove suspended particulate in former water; Floating except removing insoluble substance in former water further in pond through micro-nano aeration; Through holding concurrently, oxygen reaction tank carries out double oxygen biological degradation to organism; Dissolved organic matter, total nitrogen and total phosphorus in water is removed through micro-nano aeration high-performance bio treating pond process; Again through biological treatment tank process, ensure breeding wastewater qualified discharge.

3. the micro-nano aeration high-performance bio treatment system of livestock breeding wastewater according to claim 2, it is characterized in that: the floating pond water inlet that removes of micro-nano aeration is furnished with flocculation agent medicine system, effect is to impel insoluble substance conglomerate, and the water surface is come together under the air supporting effect of micro-nano aeration, cleaned by air supporting slag scraper and remove.

4. the micro-nano aeration high-performance bio treatment system of livestock breeding wastewater according to claim 2, it is characterized in that: in micro-nano aeration high-performance bio treating pond, provide flow dynamic and dissolved oxygen environment by micro-nano aerator and gas distribution system thereof respectively, by the biochemical degradation effect of high-performance bio ball carrier be evenly distributed, dissolved organic matter in waste water is made to be converted into CO ₂and water, ammonia nitrogen and nitrate transformation are nitrogen or cell tissue, and phosphate conversion is cell tissue.

5. the micro-nano aeration high-performance bio treatment system of livestock breeding wastewater according to claim 2, it is characterized in that: throw in one or more waterplant in black algae, hornwort, watermifoil, water caltrop, eel grass in biological treatment tank, and freshwater mussel, spiral shell, loach, silver carp, one or more hydrocoles in bighead.