CN117486373A - System and method for purifying, converting and utilizing sewage and sludge without residue - Google Patents
System and method for purifying, converting and utilizing sewage and sludge without residue Download PDFInfo
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- CN117486373A CN117486373A CN202310439874.6A CN202310439874A CN117486373A CN 117486373 A CN117486373 A CN 117486373A CN 202310439874 A CN202310439874 A CN 202310439874A CN 117486373 A CN117486373 A CN 117486373A
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
- C02F3/322—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae use of algae
- C02F3/325—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae use of algae as symbiotic combination of algae and bacteria
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biotechnology (AREA)
- Water Supply & Treatment (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Botany (AREA)
- Ecology (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention relates to a system for purifying, converting and utilizing sewage and sludge without sediment residue, which comprises a bacteria culture biochemical integrated tank, an algae culture tank, a flea culture domestication tank and a bacteria-algae-flea symbiotic tank, wherein the bacteria culture biochemical integrated tank, the algae culture tank, the flea culture domestication tank and the bacteria-algae-flea symbiotic tank are communicated sequentially through pipelines, and the water outlet of the bacteria culture tank is also communicated with the water inlet of the bacteria culture biochemical integrated tank and the water inlet of the bacteria-algae-flea symbiotic tank through pipelines; an aeration pipe connected with an external air pump is arranged in each of the bacteria culture biochemical integrated tank and the algae culture tank, and an air outlet of the aeration pipe is arranged at the bottoms of the bacteria culture biochemical integrated tank and the algae culture tank; the bacteria culture biochemical integrated tank is used for culturing aerobic beneficial bacteria, the algae culture tank is used for culturing beneficial algae species, the flea culture domestication integrated tank is used for culturing and breeding micro-animals, and the bacteria algae flea symbiotic tank is used for symbiotic cultivation of the aerobic beneficial bacteria, the beneficial algae species and the micro-animals, so that a simple food chain is formed.
Description
Technical Field
The invention belongs to the technical field of biological purification of a large amount of domestic sewage, relates to a system and a method for biological purification and resource conversion utilization of a large amount of domestic sewage and sludge, and in particular relates to a system and a method for purification and conversion utilization of sewage and sludge without sediment residues.
Background
There has been no good solution for how to efficiently convert contaminants in a substantial amount of domestic sewage into economic products, such as: the ecological wetland is utilized to purify domestic sewage, and nutrient substances in the domestic sewage are required to be digested by means of an ultra-large water area and a long time, so that the domestic sewage cannot be popularized in a large range.
The patent with the publication number of CN105541057B discloses a method for recycling biogas slurry in a pig farm, which adopts a biological purification mode to purify the biogas slurry, but adopts a biological purification scheme based on filtering out sediment in the biogas slurry, and other methods are needed to be adopted for the filtered sediment, so that the whole biogas slurry is low in purification efficiency and poor in purification effect due to complex procedures.
The conventional sewage treatment plant is mostly treated by adopting a mud-water separation mode to improve the sewage treatment efficiency, however, the method generally needs the assistance of a flocculating agent, and polyacrylamide is one of the most widely applied flocculating agents, and in research progress of physical and chemical explanation of polyacrylamide in the period of 2 months 4 in 2020 of coal dressing technology, PAM exists in water and can cause harm to soil and water for a long time. PAM can also be spontaneously degraded into acrylamide, and monomer acrylamide has toxicity, is harmful to human nerves, can cause symptoms such as eye inflammation, dizziness, headache and the like when in direct contact, can influence lung functions, and can be possibly carcinogenic when in long-term contact. The flocculation precipitation can only solve the water state at one time, and the sewage needs to be repeatedly used continuously, so that the cost is high, medicine accumulation is caused, and the ecological effect is negatively influenced. In the volume 33 of environmental engineering 2015, the research and application status of sludge treatment technology at home and abroad, it is pointed out that such surplus sludge adds a large amount of additional chemical substances and potential safety hazard in the secondary utilization process, so that the surplus sludge subjected to flocculation precipitation needs secondary precipitation, which also increases additional treatment cost and secondary pollution hidden trouble.
The chemical residue is inevitably generated when the medicine is used for treating sewage, and the harm of the chemical residue is more in long-term accumulation. The inhibition effect of chemical residue on organisms is more and more obvious along with the time, and ecological restoration is more and more difficult, so that ecological wounds which are difficult to make up are caused, and the health of human beings and various lives is directly influenced.
Therefore, how to utilize the mode of biological purification to domestic sewage, ecological environmental protection purifies sewage and mud simultaneously into the higher water of quality of water cleanliness factor, does not need to use the medicine in the middle, does not have the mud sediment to remain, can not produce secondary sediment and take place the medicine accumulation, has not yet been studied in the sewage purification trade.
Disclosure of Invention
The invention aims to provide a system and a method for purifying sewage and sludge without residue and converting and utilizing resources, which are used for solving the technical problems that the biological purification mode in the prior art cannot simultaneously purify a large amount of domestic sewage and sludge, secondary precipitation is easy to generate, and secondary pollution environment caused by drug accumulation occurs.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the system comprises a bacteria culture biochemical integrated tank, an algae culture tank, a flea culture domestication tank and a bacteria and algae flea symbiotic tank, wherein the bacteria culture biochemical integrated tank, the algae culture tank, the flea culture domestication tank and the bacteria and algae flea symbiotic tank are communicated sequentially through pipelines, a pump body and a valve, a water outlet of the bacteria culture biochemical integrated tank is also communicated with a water inlet of the bacteria and algae flea symbiotic tank through a pipeline, and a water outlet of the algae culture tank is also communicated with the water inlets of the bacteria culture biochemical integrated tank and the bacteria and algae flea symbiotic tank through a pipeline;
An aeration pipe connected with an external air pump is arranged in each of the bacteria culture biochemical integrated tank and the algae culture tank, and an air outlet of the aeration pipe is arranged at the bottoms of the bacteria culture biochemical integrated tank and the algae culture tank;
the bacteria culture biochemical integrated tank is used for culturing aerobic beneficial bacteria, the algae culture tank is used for culturing beneficial algae species, the flea culture domestication integrated tank is used for culturing and breeding micro-animals, and the bacteria algae flea symbiotic tank is used for symbiotic growth of the aerobic beneficial bacteria, the beneficial algae species and the micro-animals to form a simple food chain;
the bacteria culture biochemical integrated tank is divided into a water inlet bin A for carrying out innocuous treatment on sewage and culturing aerobic beneficial bacteria and a water outlet bin A for precipitating large-particle pollutants in water through a partition A, a water outlet communicated with the water inlet bin A and the water outlet bin A is arranged above the partition A, an aeration pipe is arranged in the water inlet bin A of the bacteria culture biochemical integrated tank, an aeration pipe in the bacteria culture biochemical integrated tank is a strong aeration pipe, an air outlet of the aeration pipe is arranged at the bottom of the water inlet bin A, and a water outlet end of the water outlet bin A is connected and communicated with the algae culture tank, the flea culture domestication tank and a water inlet end of the bacteria and flea symbiotic tank;
The sewage treatment device also comprises a sewage pump A and a sewage pump B, wherein a sewage pumping port of the sewage pump A is arranged at the bottom of the tank in the water outlet bin A, and a sewage outlet is arranged in the water inlet bin A; the sewage pumping port of the sewage pumping pump B is arranged at the bottom of the algae culture pond, and the sewage draining port is arranged in the water inlet bin A of the bacteria culture biochemical integrated pond.
The algae culture pond is divided into a water inlet bin B and a water outlet bin B through a partition B, a water outlet communicated with the water inlet bin B and the water outlet bin B is arranged above the partition B, the water inlet end of the water inlet bin B is connected and communicated with the water outlet end of the fungus culture biochemical integrated pond, and the water outlet end of the water outlet bin B is respectively connected and communicated with the water inlet ends of the flea culture domestication pond and the fungus and algae symbiotic pond;
the aeration pipe in the algae cultivation pond is a micro aeration pipe, the micro aeration pipe is paved at the pond bottom of the water inlet bin B, and a fungus bed is arranged at the upper end of the micro aeration pipe;
the sewage pumping port of the sewage pump B is arranged at the bottom of the water outlet bin B.
The utility model also comprises a flea purifying tank, wherein the water inlet end of the flea purifying tank is communicated with the water outlet end of the bacteria-algae flea symbiotic tank through a pipeline; the water outlet end of the flea purifying tank is communicated with the water inlet end of the bacteria-algae-flea symbiotic tank, the flea culturing and domesticating integrated tank and the external water recovery station through pipelines, the pump body and the valve, the external water recovery station is used for recovering purified water, purified sewage is reused, and fleas in the flea purifying tank are used for producing baits for economic output or baits for other aquatic products in subsequent water culture.
The sewage treatment device further comprises a sewage containing tank, wherein the water inlet end of the sewage containing tank is communicated with a pipeline of external sewage, and the water outlet end of the sewage containing tank is communicated with the water inlet end of the bacteria culture biochemical integrated tank through a pipeline valve and a pump body and is used for controlling the water inlet amount and the water inlet speed of the injected bacteria culture biochemical integrated tank.
A method for purifying, converting and utilizing sewage and sludge without sediment residue,
a, biochemical treatment of sewage:
a, innocent treatment: when sewage needs to be injected into the bacteria culture biochemical integrated tank, a pump body and a valve between the sewage holding tank and the bacteria culture biochemical integrated tank are opened, the flow and the total amount of the sewage in the bacteria culture biochemical integrated tank are controlled, an air pump connected with a strong aeration pipe in a water inlet bin A of the bacteria culture biochemical integrated tank is opened, the sewage in the water inlet bin A is aerated and oxygenated, meanwhile, the sewage is stirred by air flow, the sewage in the water inlet bin A is driven to circulate up and down, mud and water in the water inlet bin A are fully mixed, and oxygen is fully dissolved in the sewage, so that the dissolved oxygen content of the sewage is obviously improved, the survival, the propagation and the metabolism of anaerobic microorganisms in the sewage are inhibited, and meanwhile, the dissolved oxygen in the water can oxidize the reducing harmful substances generated by the metabolism of anaerobic bacteria;
b, biochemical treatment: the content of soluble oxygen in the sewage is improved, harmful reducing substances are reduced, aerobic beneficial bacteria are sequentially propagated in the sewage in the water inlet bin A, large-particle pollutants in the sewage are decomposed into small-particle organic chips in the propagation and growth process of the aerobic beneficial bacteria, the primary enrichment of nutrition in the sewage is completed, along with the gradual increase of the water injection rate in the water inlet bin A, the sewage flows into the water outlet bin A through the water outlet of the partition board A, the large-particle pollutants which are not decomposed in the sewage gradually precipitate in the water outlet bin A, and the small-particle organic matters are suspended in the water outlet bin A to form a mixed solution;
b, breeding and domesticating the miniature animals: sequentially injecting biochemical sewage into the flea culture and domestication pond, putting the micro-animals into the flea culture and domestication pond for culture and reproduction, sampling and observing, and searching the optimal water inflow of the cultured and reproduced micro-animals; the miniature animals comprise rotifers, cladocera, artemia and copepods;
c, purifying water quality: the process for purifying water quality comprises the steps of culturing beneficial algae species to purify water quality and bacteria, algae and fleas to purify water quality, putting the beneficial algae species into an algae culture pond, and maintaining the beneficial algae species as dominant algae species, wherein the beneficial algae species absorb soluble nutrient substances in sewage, the nutrient substances are continuously circulated in the algae culture process, and under the action of a food chain, the algae are continuously input and propagated, so that microorganisms such as algae are effectively ensured to be kept in a younger process (exponential growth phase) to efficiently and rapidly absorb and convert the nutrient substances, and after the completion, the water and the algae in the algae culture pond are discharged into a bacteria culture biochemical integrated pond, a flea culture and domestication integrated pond or a bacteria, algae and flea symbiotic pond to supplement dissolved oxygen therein, or the food is provided for the flea culture and domestication integrated pond and the bacteria, the flea symbiotic pond;
The aerobic beneficial bacteria decompose large-particle pollutants in the sewage into small-particle organic chips and algae to absorb soluble nutrient substances in the water to form primary enrichment of nutrients in the sewage, and the fleas filter bacteria, the small-particle organic chips and the algae in the edible water to form secondary enrichment of the nutrients in the sewage;
and the sediment in the algae culture pond is cleaned by a sewage pump B at regular intervals and pumped into a bacteria culture biochemical integrated pond for re-decomposition by utilizing aerobic beneficial bacteria.
In the step A, in a water inlet bin A of the bacteria culture biochemical integrated tank, the primary injection amount of sewage is lower than one half of the existing water amount in the water inlet bin A, and meanwhile, the water inlet amount is adjusted according to the sewage load concentration to ensure the enrichment and activity of bacteria in the water inlet bin A, and the adjustment mode is that when the load concentration is low, the water inlet amount is increased;
the sediment in the water outlet bin A of the bacteria culture biochemical integrated tank is cleaned by a sewage pump A at regular intervals and is pumped into the water inlet bin A of the bacteria culture biochemical integrated tank, and then is decomposed by utilizing aerobic beneficial bacteria;
and the sewage pump B pumps the sediment in the water outlet bin B of the algae cultivation pond to the water inlet bin A of the bacteria cultivation biochemical integrated pond.
The micro-animals in the step B are daphnia magna or longus in the class of cladocera;
The method for searching the optimal water inflow of the cultured and bred micro-animals comprises the steps of adjusting the water quality when the female fleas in the sleep state appear, wherein the adjusting measures comprise reducing the sewage water inflow, and when the young fleas appear, the female fleas are well bred, the sewage water inflow can be properly increased, and the circulation is carried out until the optimal water inflow is searched;
the inoculation density of the daphnia magna is 100-500/L;
the domestication mode of the daphnia magna is to gradually increase suspension and semi-suspension in a bacteria culture biochemical integrated tank and sewage in an algae culture tank in a normal water body, and gradually domesticate the daphnia magna, or to form a group containing resting eggs by adding excessive but non-lethal bacteria and algae mixed suspension solution in the normal water body;
after the domestication is finished, the flea cultivation and domestication pond can be used as a bacterial algae flea symbiotic pond or a flea cultivation backup pond.
In the step C, the water quality purification method specifically comprises the steps of injecting sewage in a water outlet bin A into a water inlet bin B of an algae culture pond, opening a micro-aeration pipe, performing micro-aeration on the sewage in a mixed solution state, adding aerobic beneficial bacteria into the water in the water inlet bin B, attaching, propagating and further decomposing large-particle pollutants in the sewage in the water inlet bin B on a bacterial bed, and improving the content of small-particle organic matters and soluble nutrient substances in the sewage;
Along with the increase of the water level in the water inlet bin B, sewage overflows into the water outlet bin B from the water outlet of the partition B, beneficial algae seeds are put into the water outlet bin B and are maintained to be dominant algae seeds, and the beneficial algae seeds absorb soluble nutrient substances in the sewage, so that further primary enrichment of nutrition in the sewage is realized;
the bacterial algae and flea symbiotic purified water quality specifically comprises the steps of discharging part of fleas from a flea culture domestication pond to a bacterial algae and flea symbiotic pond, discharging surface water in a bacterial culture biochemical integrated pond and surface water in an algae culture pond into the bacterial algae and flea symbiotic pond as flea food, determining the discharge amount of microorganisms and small particle suspended matters in the flea filter water according to the adaptability of the fleas to sewage, determining reasons and making corresponding adjustment when the water quality of the sewage is not suitable for the survival of aerobic beneficial bacteria, algae and fleas, and keeping the normal reproduction of organisms in the bacterial algae and flea pond and the formation of benign food chains by adjusting the feeding amount of the fleas according to the state of the flora and the biological group of the fleas and the climate change;
the total amount of surface water in the bacteria culture biochemical integrated tank and the surface water in the algae culture tank which are discharged into the bacteria algae flea symbiotic tank every day is one tenth to one fifth of the total water volume of the tank, so that the transparency range of the water body is ensured to be 20-30 cm;
When the transparency of the water body is lower than 20cm, the water body represents that the water quality is not suitable for survival of aerobic beneficial bacteria, algae and fleas in the bacteria, algae and flea symbiotic tank, and at the moment, the adjustment measures comprise reducing the sewage inflow.
The process for purifying water quality in the step C also comprises the step of purifying water quality by fleas, specifically, the method comprises the steps of injecting purified sewage in the bacteria-algae-flea symbiotic tank into the flea purifying tank, only discharging algae and fleas into the flea purifying tank to form a simple food chain, when the nutrition concentration in the flea purifying tank is high, the algae grows fast, the thrown quantity of the fleas is increased for digestion, when the nutrition is thin, the fleas naturally produce dormant eggs, the quantity is reduced, the ingestion quantity is reduced, when the environment is suitable for the dormant eggs are hatched again, the increasing speed of the algae in the water body is accelerated, and the sewage is further purified in the flea purifying tank, so that the method is suitable for most of domestic production water; the tail water purified in the flea purifying tank can be also conveyed into the flea culture and domestication tank or the bacterial algae flea symbiotic tank for adjusting the water quality in the flea culture and domestication tank or the bacterial algae flea symbiotic tank.
In the step A, when the content of dissolved oxygen in the sewage of the bacteria culture biochemical integrated tank is higher than 1mg/L, a small amount of sewage is discharged to the flea culture domestication tank for many times;
the micro-animals in the step B are daphnia magna or longus in the class of cladocera; the breeding and domestication method comprises the steps of injecting normal water with the depth of 0.5-1.2 m into a flea culture and domestication pond, adjusting the acid-base value of the water in the flea culture and domestication pond to be 7.5-8, adding 300-500 kg/mu of livestock manure into the pond, and rapidly breeding the large fleas in the flea culture and domestication pond after 3-5 days, at the moment, discharging sewage in the biochemical pond into the flea culture and domestication pond, wherein the sewage discharged into the flea culture and domestication pond for the first time is less than one tenth of the existing water storage amount in the flea culture and domestication pond.
The beneficial effects of adopting above-mentioned technical scheme to produce lie in:
the system and the method for purifying, converting and utilizing the domestic sewage and sludge without sediment are characterized in that the sludge carried in the domestic sewage is decomposed and purified together with the sewage in a biological purification mode by utilizing the system, the index propagation advantages and the quantity advantages of micro-organisms are fully utilized, the conversion speed of sewage organic matters in a food chain is effectively improved, the primary conversion of the sewage is realized, the purification of water is realized while the utilization of nutrient substances in the sewage is realized, the purification efficiency is high, a good foundation is established for the subsequent recycling of the sewage, the purification efficiency is high, the process without flocculation and sedimentation is basically realized, the problems that residual sludge and residual sludge in ecological conversion are almost ignored in the traditional flocculation and sedimentation can be solved, in addition, the organic matters in the sewage are converted into economic products, and the additional economic output is generated.
The tail water treated by the technical scheme is a natural product after sewage recycling, is more ecological and environment-friendly natural water, and is suitable for more occasions, such as scenic spot playing water, agricultural water, urban greening water, fishery water and the like, so that water resources are fully recycled. In addition, the sewage is treated in an aerobic mode, so that the generation of greenhouse gases can be avoided, the environment is protected, the sewage treatment efficiency of the wetland is relatively improved, and the occupied area in the sewage treatment process is greatly reduced.
The technical scheme provided by the invention realizes the resource utilization of sewage by adopting a mode of a microbial food chain, solves the problem of sewage purification with high quality and high efficiency, is a mode which respects nature, conforms to nature and protects nature, benefits the nation and the people, breaks through the technical prejudice that domestic sewage and sludge in the prior art cannot be decomposed and purified together, and fills the blank of purifying sewage with high efficiency in an ecological environment-friendly mode in China.
According to the technical scheme provided by the invention, organic particles in sewage are used as a basic nutrition source, and aeration oxygenation is carried out on the sewage to culture high-density aerobic beneficial bacteria, so that primary enrichment of sewage nutrition is finished, and meanwhile, large-particle organic matters are decomposed into organic scraps which can be filtered and eaten by micro animals; the algae is utilized to absorb and decompose the soluble nutrition, thus completing the primary enrichment of the nutrition of the sewage; meanwhile, photosynthesis is carried out by utilizing algae to provide dissolved oxygen for the polluted water body, and finally organic scraps, thalli and algae are used as baits to cultivate high-density micro-zoon such as fleas; the enrichment of the nutrition in the sewage is completed in a food chain mode, so that the secondary pollution is avoided, and the ecological environment is protected. Meanwhile, the bacteria can convert and utilize organic carbon in sewage and sludge in the decomposition process, and algae can fixedly utilize inorganic carbon to form self life constitution, so that a high-efficiency carbon fixing effect is formed, and meanwhile, the bacteria can be used as bait to be enriched in high-grade organisms, such as fish, shrimp, crab and the like, so as to achieve the aim of carbon sink.
The invention adopts the mode of the micro-organism food chain to realize the resource utilization of sewage, solves the problem of sewage purification with high quality and high efficiency, is a mode which respects nature, conforms to nature and protects nature, is beneficial to the national and the people, and is suitable for being widely popularized and used in the technical field of sewage purification.
Drawings
Fig. 1 is a simplified system diagram of a sewage treatment process according to a first embodiment of the present invention.
Description of the embodiments
The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which the objects, structures, and functions of the invention are shown.
As shown in figure 1, the invention provides a system for purifying, converting and utilizing sewage and sludge without residue, which comprises a bacteria culture biochemical integrated tank, an algae culture tank, a flea culture acclimation tank and a bacteria-algae-flea symbiotic tank, wherein the bacteria culture biochemical integrated tank, the algae culture tank, the flea culture acclimation tank and the bacteria-algae-flea symbiotic tank are communicated sequentially through pipelines, and the water outlet of the bacteria culture biochemical integrated tank is also communicated with the water inlet of the bacteria-algae-flea symbiotic tank through the pipelines so as to flow the sewage therein into the bacteria-algae-flea symbiotic tank to serve as bait for micro animals; the water outlet of the algae culture pond is also communicated with the water inlets of the bacteria culture biochemical integrated pond and the bacteria algae flea symbiotic pond through pipelines, and is respectively used for supplementing dissolved oxygen in the bacteria culture biochemical integrated pond or taking surface water as food of fleas in the bacteria algae flea symbiotic pond;
The bacteria culture biochemical integrated tank and the algae culture tank are respectively provided with an aeration pipe connected with an external air pump, the air outlet of the aeration pipe is arranged at the bottom of the bacteria culture biochemical integrated tank and the bottom of the algae culture tank, air is introduced into the water bottom of the sewage by using the strong aeration pipe, the air rises in the sewage and agitates the sewage in the bacteria culture biochemical integrated tank to turn up and down, mud and water in the sewage are fully mixed, and the dissolved oxygen content in the sewage can be evenly increased;
the bacteria culture biochemical integrated tank is used for culturing aerobic beneficial bacteria, the aerobic beneficial bacteria are used for breeding in sewage with increased dissolved oxygen content, the breeding of anaerobic bacteria and the generation of reducing harmful substances in the sewage are inhibited, the sewage is subjected to innocent treatment, meanwhile, the nutrition substances in the sewage can be subjected to primary enrichment by the exponential breeding of the aerobic beneficial bacteria, and large-particle organic matters (namely sludge particles) in the sewage are decomposed into small-particle organic chips and soluble nutrients, so that the later-stage algae can absorb the soluble nutrition substances and filter-fed organic chips of filter-fed animals, the sewage is subjected to biochemical treatment, and the sewage is further purified; the algae culture pond is used for culturing beneficial algae species, so that the beneficial algae species are propagated in a large area, and the algae culture pond absorbs soluble nutrient substances in water to perform primary enrichment of nutrition; the flea culture and domestication integrated tank is used for culturing and breeding micro-animals so as to filter small-particle organic chips and soluble nutrient substances in the sewage for secondary enrichment of nutrition and further purify the water quality; the bacterial algae and flea symbiotic pool is used for symbiotic beneficial bacteria, beneficial algae species and micro animals to form a simple and benign food chain.
The sewage treatment device also comprises a sewage pump A and a sewage pump B, wherein a sewage pumping port of the sewage pump A is arranged at the bottom of the tank in the water outlet bin A, and a sewage outlet is arranged in the water inlet bin A; the sewage pumping port of the sewage pumping pump B is arranged at the bottom of the algae culture pond, and the sewage draining port is arranged in the water inlet bin A of the bacteria culture biochemical integrated pond. The sewage pump A is used for cleaning and pumping the sludge deposited in the water outlet bin A into the water inlet bin A at regular intervals, and the sewage pump B is used for cleaning and pumping the sludge deposited in the water outlet bin B into the water inlet bin A at regular intervals so as to utilize aerobic beneficial bacteria to re-decompose large-particle pollutants which are not completely decomposed before.
Specifically, the biochemical integrative pond of fungus cultivation is separated into through cut off A and is used for sewage innocuous treatment, cultivates the play water storehouse A of good bacterial of good oxygen type and is used for precipitating big granule pollutant in the aquatic, cut off A's top is provided with the delivery port that feeds through water storehouse A and play water storehouse A, the aeration tube sets up in the integrative pond of fungus cultivation's the water storehouse A of intaking, the aeration tube in the biochemical integrative pond of fungus cultivation is strong aeration tube, the gas outlet setting of aeration tube is in the bottom of the pond of water storehouse A, play water storehouse A's play water end with algae cultivation pond, flea cultivate the domestication pond and the inlet end in fungus algae flea symbiotic pond links up, communicates.
The algae culture pond is divided into a water inlet bin B and a water outlet bin B through a partition B, a water outlet communicated with the water inlet bin B and the water outlet bin B is arranged above the partition B, the water inlet end of the water inlet bin B is connected and communicated with the water outlet end of the fungus culture biochemical integrated pond, the water outlet end of the water outlet bin B is respectively connected and communicated with the water inlet ends of the flea culture domestication pond and the fungus and algae symbiotic pond, an aeration pipe in the algae culture pond is a micro-aeration pipe, the micro-aeration pipe is paved at the bottom of the water inlet bin B, a fungus bed is arranged at the upper end of the micro-aeration pipe, a sewage pumping port of the sewage pump B is arranged at the bottom of the water outlet bin B, and as the sewage flowing into the water inlet bin B contains more small-particle organic matters, the colloid matters are more and rich and bacteria can decompose the small-particle organic matters into soluble nutrient substances to provide nutrition for the growth of algae, and the fungus bed is arranged at the upper end of the micro-aeration pipe, and the efficiency of decomposing organic matters in water is improved.
Because the organic pollutant content in the sewage with heavy pollution degree is high, after the sewage is purified in the bacteria-algae-flea symbiotic tank, some soluble nutrients still exist in tail water, in the embodiment, a flea purifying tank is arranged behind the bacteria-algae-flea symbiotic tank, and the water inlet end of the flea purifying tank is communicated with the water outlet end of the bacteria-algae-flea symbiotic tank through a pipeline; the water outlet end of the flea purifying tank is communicated with the water inlet end of the bacteria-algae-flea symbiotic tank, the flea culturing and domesticating integrated tank and the external water recovery station through pipelines, the pump body and the valve, the external water recovery station is used for recovering purified water, purified sewage is reused, and fleas in the flea purifying tank are used for producing baits for economic output or baits for other aquatic products in subsequent water culture.
The sewage treatment device further comprises a sewage containing tank, wherein the water inlet end of the sewage containing tank is communicated with a pipeline of external sewage, and the water outlet end of the sewage containing tank is communicated with the water inlet end of the bacteria culture biochemical integrated tank through a pipeline valve and a pump body and is used for controlling the water inlet amount and the water inlet speed of the injected bacteria culture biochemical integrated tank.
Furthermore, the aquatic organisms grow and develop in water, namely, the continuous carbon fixation process, shells of shells, shells of shrimps and crabs and bones of fish play a role in mineralizing and fixing carbon in the growth process, and the method for purifying and converting and utilizing sewage and sludge without sediment residues provided by the embodiment can recycle organic carbon in domestic sewage in a biological carbon fixation mode, so that the method can not only generate sufficient baits for large-scale aquatic organisms and bring great economic returns to the output of aquatic products, but also lighten huge pollution control investment of domestic sewage by government every year and realize industrialization of domestic sewage resources.
The method for purifying, converting and utilizing sewage and sludge without precipitation residues specifically comprises the following steps:
a, biochemical treatment of sewage:
a, innocent treatment: when sewage is needed to be injected into the bacteria culture biochemical integrated tank, a pump body and a valve between the sewage containing tank and the bacteria culture biochemical integrated tank are opened, the flow and the total amount of the sewage in the bacteria culture biochemical integrated tank are controlled, an air pump connected with a strong aeration pipe in a water inlet bin A of the bacteria culture biochemical integrated tank is opened, the sewage in the water inlet bin A is aerated and oxygenated, meanwhile, air flows agitate the sewage and drive the sewage in the water inlet bin A to circulate and turn up and down, mud and water in the water inlet bin A are fully mixed, and oxygen is fully dissolved in the sewage, so that the dissolved oxygen content of the sewage is obviously improved, the survival and propagation of anaerobic microorganisms in the sewage and the generation of reducing substances due to metabolism are inhibited, and meanwhile, the dissolved oxygen in the water can oxidize the generated reducing harmful substances such as hydrogen sulfide and the like, thereby carrying out innocent treatment on the sewage. In order to fully remove the harmful treatment and culture the aerobic beneficial bacteria on the sewage in the water inlet bin A, the enrichment and the activity of the flora in the water inlet bin A and the water outlet bin A are ensured, the water inlet amount in the water inlet bin A is required to be regulated according to the sewage load concentration, wherein the flora is always kept in an enriched and active state when the load concentration is high, and no regulation is required at the moment; when the load concentration is low, the adjustment mode is to increase the water inflow, and the one-time injection amount of sewage is lower than one half of the existing water amount in the water inlet bin A.
b, biochemical treatment: in the water inlet bin A, the content of soluble oxygen in sewage is improved, harmful reducing substances are reduced, aerobic beneficial bacteria are subjected to index reproduction in the sewage with sufficient oxygen, large-particle pollutants in the sewage are decomposed into small-particle organic chips in the reproduction and growth process of the aerobic beneficial bacteria, the primary enrichment of nutrition in the sewage is completed, the small-particle organic substances are suspended in the water outlet bin A to form a mixture, the relative density of the decomposed mixture is 1.002-1.003, the mixture is subjected to microscopic examination, various bacteria are observed to be active, the mixture in the mixture is represented to reach a mature state, the sewage is continuously injected into the water inlet bin A, the mixture in the mature state flows into the water outlet bin A from a water outlet of the water inlet bin A, the large-particle suspended substances which are not decomposed are precipitated in the water outlet bin A, the small-particle organic chips are partially discharged to the flea culture pond and the bacterial algae symbiotic pond as micro animal feed, and a part of the small-particle organic chips are discharged into the algae culture pond as algae nutrient sources;
in addition, because the large-particle suspended matters are accumulated in the water outlet bin A continuously, the water volume in the water outlet bin A is further affected gradually, and meanwhile, if a large amount of accumulated sediment cannot be treated, secondary pollution is caused to the water, in the embodiment, the sediment in the water outlet bin A is cleaned regularly, and is pumped out by the sewage pump A and flows back to the water inlet bin A, so that the sediment is decomposed again in the water inlet bin A, and the problem can be solved, and surplus sludge cannot be generated.
B, breeding and domesticating the miniature animals: sequentially injecting biochemical sewage into the flea culture and domestication pond, putting the micro-animals into the flea culture and domestication pond for culture and reproduction, sampling and observing, and searching the optimal water inflow of the cultured and reproduced micro-animals; the micro-animals inoculated and domesticated are selected from one or more of the branch horns, copepods, paramecium, rotifers and artemia which can be exponentially propagated in a proper environment, and the branch horns with the mature individual size of 3-6mm have better efficiency in the purification process, and represent the species of daphnia magna, daphnia longa and daphnia flea.
Putting fleas into a flea culture and domestication pond for breeding and domestication, wherein the inoculation density of the fleas is preferably 100-500/L, aerating and oxygenating the flea culture and domestication pond by using aerated stones, continuously supplementing the content of dissolved oxygen in the flea culture and domestication pond, inoculating the fleas into the flea culture and domestication pond, and in practice, the single area of the pond is between 10 and 100 square meters, the water depth is 80-100 cm, and preferably, the area of the pond is 70 square meters, the water depth is 80cm, and the inoculation density of the fleas is 300/L; regarding the high-density propagation of the micro-animals, when the embodiment takes branch angles as an example to form high density, obvious agglomeration phenomenon can be seen by naked eyes, the local density can reach 1000-8000/L, and the attention is paid to the fact that the branch angles with larger body shape have smaller density in unit space;
The domestication mode comprises two modes, namely, gradually increasing suspended matters and semi-suspended matters in a bacteria culture biochemical integrated tank and sewage in an algae culture tank in a normal water body, adding mixed water in one tenth of the total water, and then slowly adding the mixed water to enable fleas to be slowly adapted to the sewage environment, wherein the domestication can be completed in 3 to 7 days when the harmless treatment effect is good;
the other is to add excessive but non-lethal mixed suspension solution of bacteria and algae into a proper water body to form a population containing resting eggs, and the concentration of pollutants in the water body is proper when the number of fleas is maintained to be relatively stable. At this time, the new flea seeds are continuously put into the device to continuously produce dormant eggs, but the method can increase the domestication speed to a certain extent, and can also have enough flea seeds to reproduce when the sewage quality is good, so that the treatment rate is increased.
The two domestication modes have advantages and disadvantages, can be used simultaneously or separately, and can be determined according to actual conditions in the actual operation process, and the embodiment is not particularly limited.
After domestication, the tank can be used as a bacteria algae flea symbiotic tank for further purifying water bodies in the bacteria algae flea symbiotic tank, and also can be used as a flea cultivation backup tank, and can be determined according to actual conditions in the actual operation process, and the method is not particularly limited in the embodiment.
C, purifying water quality: the water purification modes in this embodiment include 3 kinds, specifically as follows,
d, culturing beneficial algae species to purify water quality, which specifically comprises the following steps:
injecting the sewage in the water outlet bin A into a water inlet bin B of the algae cultivation pool, opening a micro-aeration pipe, micro-aerating the sewage in a mixed solution state, supplementing dissolved oxygen in water, and simultaneously promoting the circulation flow of the sewage in the algae cultivation pool;
as the mixed solution in the bacteria culture biochemical integrated tank can be wrapped with part of large-particle organic matters when entering the water inlet bin B of the algae culture tank, in order to reduce the amount of the large-particle organic matters in the sewage in the water inlet bin B, a bacterial bed is arranged at the upper end of the micro aeration pipe, the large-particle organic matters in the water inlet bin B are further decomposed by utilizing aerobic beneficial bacteria, and in order to promote the decomposition efficiency, the contents of the small-particle organic matters and soluble nutrients in the sewage are improved, and aerobic bacteria can be added into the water in the water inlet bin B. Because the water entering the water inlet bin B is mostly small particle scraps, the water inlet bin B has more colloid substances and rich bacteria, and the colloid substances and aerobic beneficial bacteria are extremely easy to attach on a bacterial bed, so that the decomposition efficiency can be effectively improved.
Along with the increase of the water level in the water inlet bin B, sewage overflows into the water outlet bin B from the water outlet of the partition B, beneficial algae seeds are put into the water outlet bin B, the beneficial algae seeds absorb soluble nutrients in the sewage, further primary enrichment of nutrition in the sewage is realized, dissolved oxygen can be added to the water body, wherein the beneficial algae seeds preferentially select green algae, diatom and other types which are beneficial to aquatic animals and are easier to stabilize the water body environment, and secondly select hidden algae and other algae seeds which are easy to form dominant algae seeds to produce water bloom and are suitable for being used as baits of aquatic animals, so that algae which are easy to produce toxins such as blue algae, golden algae and dinoflagellate are avoided, and the preferred algae seeds are chlorella. In the process, other algae are allowed to exist in the water outlet bin B, but the beneficial algae species are required to be maintained as dominant algae species, the light energy conversion capability of the algae is 10-50 times that of terrestrial plants, and the algae is according to the primary algae formula C 106 H 253 O 110 N 16 P is calculated, 1 ton of algae biomass raw material is produced, about 1.5 tons of carbon dioxide is absorbed, and abundant algae microorganisms in the water body can form a high oxygen release environment around, so that a large amount of oxygen is generated in the algaeMeanwhile, a large amount of negative oxygen ions can be released, dust particles such as pm2.5 and the like and greenhouse gases are effectively eliminated, surrounding air is optimized, and as the content of dissolved oxygen in water rich in algae is very high, when the content of the dissolved oxygen is higher than that of saturated oxygen, further aeration is increased, the interaction of air and water is enhanced, the dissolved oxygen in the water is released, carbon dioxide is supplemented, the carbon source requirement in the algae growth process is met, and the normal growth of algae is ensured. Meanwhile, the water and algae in the water outlet bin B can be discharged into a bacteria culture biochemical integrated tank, a flea culture and domestication integrated tank or a bacteria-algae-flea symbiotic tank so as to supplement dissolved oxygen in the water body, thereby reducing the workload of the oxygen exposing equipment and reducing the energy consumption of the oxygen exposing equipment; meanwhile, algae carbon fixation is short-term carbon fixation, which can be called circulating carbon sink, circulates with various nutrient substances in a water body, and finally is enriched in organisms of large-scale aquatic animals, or is buried or mineralized at the water bottom to form long-term effective carbon sink;
Algae in the water can also be used as food for fleas in the flea culture domestication pool and the bacterial algae flea symbiotic pool, and according to related researches, the silver carp and bighead carp can absorb 121.5g and 115.7g of carbon every 1KG yield. The carbon content of most freshwater fish exceeds 50% or even 67% of the dry weight, and the water content is 75% -85%, so that about 100 tons of the 9920KG carbon element-produced fish products can be calculated, and the aquatic products with the value of about 200 ten thousand yuan can be obtained by calculating every 20 yuan/KG.
In the process of culturing algae, the nutrient components of the sewage in the water outlet bin B need to be detected, the nutrient proportion in the water outlet bin B is adjusted according to the detection result, in the embodiment, the detection and adjustment of the nutrient proportion are mainly used for adjusting the nitrogen-phosphorus ratio, and under the normal condition, the nitrogen-phosphorus ratio in the sewage of the water outlet bin B is 10:1 to 6:1, when the detected proportion is lower than the proportion, a proper amount of livestock manure or inorganic nutrient can be added to improve the nutrient concentration of the sewage in the water outlet bin B. As the mixed solution entering the tank has fewer sediments, the mixed solution can be cleaned once only when the sediments are more, and the cleaned sediments are pumped out and flow back to the water inlet bin A of the bacteria culture biochemical integrated tank for re-decomposition. The beneficial algae provided by the embodiment are various in variety, wide in application range, short in propagation time and rapid in growth, and due to the high photosynthetic efficiency, the growth is not affected by regions and seasons, and the dissolved oxygen can be added to the water body all the year round and the nutrition in the water can be enriched, so that a solid foundation is laid for developing ecological sewage treatment all the year round.
e, symbiotic purification of water quality by the bacteria, algae and fleas specifically comprises the following steps:
the micro-aeration stones in the bacterial algae flea symbiotic pool are opened to micro-aerate water in the bacterial algae flea symbiotic pool, and the water flow caused by bubbles cannot influence the normal movement of the fleas. Discharging fleas in the flea cultivation domestication pond into a bacterial and algae flea symbiotic pond, and throwing surface water in the bacterial and biochemical integrated pond and surface water in the bacterial and algae cultivation pond into the bacterial and algae flea symbiotic pond as flea food, wherein the discharge amount per day is one tenth to one fifth of the total water volume of the pond, the discharge amount and the discharge times follow the principle of a small number of times, and generally three to five times are required to be discharged per day, so as to ensure that the purifying function of the fleas is fully exerted, the fleas in the bacterial and algae flea symbiotic pond are cultivated in high density, and the initial inoculation density is 200-300/L in the embodiment; preferably, the surface water is uniformly sprayed in a throwing mode, the throwing amount and throwing times of each day are adjusted according to the state of the microbiota, the algae microbiota and the flea microbiota and the climate change, so that normal propagation of organisms in the pool is maintained, and benign food chains are formed as main standards, and the method is not particularly limited in the embodiment. In the bacteria, algae and flea symbiotic pool of the embodiment, the high-density micro-animals play the most important roles of filtering, feeding and purifying pollutants in sewage, and bacteria and algae play the roles of assisting in enriching nutrients in water.
The water quality measurement standard is that the transparency of the water body is between 20 and 30cm, when the water body transparency is reduced to below 20cm, the water quality is represented to be unsuitable for survival of aerobic beneficial bacteria, algae and fleas in the algae-flea symbiotic tank, and at the moment, the adjustment measures comprise reducing the sewage inflow or adjusting by using tail water purified in a flea purifying tank arranged behind the sewage inflow; when the transparency of the water body is higher than 30cm, the water body represents flea food shortage, and the adjustment mode is to inject new sewage into the bacteria-algae-flea symbiotic tank.
The surface water in the bacteria-algae-flea symbiotic tank is discharged into a flea purifying tank, and the water is further purified in the flea purifying tank.
f, flea purifies water quality, specifically includes:
the method comprises the steps of discharging water on the inner surface layer of a bacterial-algae-flea symbiotic tank into a flea purifying tank, simultaneously carrying partial flea inflow, properly adding algae water into the flea purifying tank to form a simple food chain, forming a high-density flea group in the bacterial-algae-flea symbiotic tank to ensure full play of the purifying function of the fleas, wherein the formation of the high-density flea group depends on the inflow of the fleas from the bacterial-algae-flea symbiotic tank and the self-reproduction of the fleas, when the nutrition concentration in the flea purifying tank is high, the algae grow quickly, the fleas are fished or discharged from a flea culture domestication tank and put into the flea purifying tank, digestion is carried out by increasing the flea adding amount, the quantity of the fleas is relatively reduced, and when the nutrition is thin, the dormant eggs are hatched again when the environment is suitable; the sewage is further purified in the flea purifying pond, at the moment, the water body has high transparency, less suspended matters and low nutrition content, and can be used in the field with slightly high water quality cleanliness, such as scenic spot playing water, agricultural water or urban greening water, and the like, and can also be used as most of fishery water, so that the preliminary conversion of sewage organic matters is realized.
In addition, the tail water further purified in the flea purifying tank can be applied to the fields, and can also be applied to the flea culture domestication tank or the bacteria-algae flea symbiotic tank, specifically: when the fleas are not suitable for water quality in the flea culture domestication pond or the bacterial algae flea symbiotic pond is not suitable for survival of beneficial bacteria, algae and fleas which are cultured, tail water in the flea purifying pond is put into the flea culture domestication pond or the bacterial algae flea symbiotic pond so as to adjust the water quality of sewage in the flea purifying pond.
Examples
The difference between this embodiment and the first embodiment is only that: in the step A, when the content of dissolved oxygen in the sewage of the bacteria culture biochemical integrated tank is higher than 1mg/L, a small amount of sewage is discharged to the flea culture domestication tank for many times;
when the flea culture and domestication pond is built in the step B, injecting normal water with the depth of 0.5 to 1.2 meters into the flea culture and domestication pond, adjusting the pH value of the water in the flea culture and domestication pond to be 7.5 to 8, adding livestock manure into the pond, and adding 100 to 150 kg/mu of chicken manure for the first time, wherein the quantity of the livestock manure is 300 to 500 kg/mu; in the process of using fleas to cultivate and domesticate the pond in the later stage, apply once every 5-7 days, wherein the inorganic fertilizer is urea of 2kg per mu and superphosphate of 0.5kg per mu, in addition, can put right amount of yeast into sewage, use for decomposing the large-particle matters in the livestock excrement into fleas can filter the small-particle organic matters of feeding, meanwhile it is also regarded as the bait of fleas, preferably, pour into the depth of the normal water is 0.7 m, regulate the water PH value to 7.6, add the amount of livestock excrement to be 350kg per mu;
The method comprises the steps of selecting miniature animals as daphnia magna or longline fleas in the daphnia magna, putting the miniature animals into a flea culture and domestication pond for domestication, culture and reproduction, and then quickly reproducing the daphnia magna in the flea culture and domestication pond after 3 to 5 days, at the moment, sequentially discharging sewage in a biochemical pond into the flea culture and domestication pond, wherein the sewage amount discharged into the flea culture and domestication pond for the first time is less than one tenth of the existing water storage amount in the flea culture and domestication pond, after the sewage is injected, sampling and observing the daphnia magna, observing the living state of the daphnia magna, judging whether the daphnia magna appears, and when the daphnia magna appears in the sampling, adjusting the water quality, wherein the adjusting measures comprise reducing the discharge amount of the sewage or adjusting tail water after being purified in a fungus algae flea symbiotic pond in later use, regarding the purification of the sewage in the fungus algae flea pond, and detail see step C, when the daphnia magna appears, representing that the daphnia magna is good, the sewage is reproduced, and the sewage discharge amount can be properly increased, and the water is circulated until the best water intake amount is found.
It will be understood that the invention has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. The system for purifying, converting and utilizing sewage and sludge without sediment residue is characterized in that: the device comprises a fungus culture biochemical integrated pool, an algae culture pool, a flea culture acclimation pool and a fungus algae flea symbiotic pool, which are communicated sequentially through a pipeline, a pump body and a valve and used for purifying water quality step by step, wherein a water outlet of the fungus culture biochemical integrated pool is also communicated with a water inlet of the fungus algae flea symbiotic pool through the pipeline, and a water outlet of the algae culture pool is also communicated with the water inlets of the fungus culture biochemical integrated pool and the fungus algae flea symbiotic pool through the pipeline;
an aeration pipe connected with an external air pump is arranged in each of the bacteria culture biochemical integrated tank and the algae culture tank, and an air outlet of the aeration pipe is arranged at the bottoms of the bacteria culture biochemical integrated tank and the algae culture tank;
the bacteria culture biochemical integrated tank is used for culturing aerobic beneficial bacteria, the algae culture tank is used for culturing beneficial algae species, the flea culture domestication integrated tank is used for culturing and breeding micro-animals, and the bacteria algae flea symbiotic tank is used for symbiotic growth of the aerobic beneficial bacteria, the beneficial algae species and the micro-animals to form a simple food chain;
the bacteria culture biochemical integrated tank is divided into a water inlet bin A for carrying out innocuous treatment on sewage and culturing aerobic beneficial bacteria and a water outlet bin A for precipitating large-particle pollutants in water through a partition A, a water outlet communicated with the water inlet bin A and the water outlet bin A is arranged above the partition A, an aeration pipe is arranged in the water inlet bin A of the bacteria culture biochemical integrated tank, an aeration pipe in the bacteria culture biochemical integrated tank is a strong aeration pipe, an air outlet of the aeration pipe is arranged at the bottom of the water inlet bin A, and a water outlet end of the water outlet bin A is connected and communicated with the algae culture tank, the flea culture domestication tank and a water inlet end of the bacteria and flea symbiotic tank;
The sewage treatment device also comprises a sewage pump A and a sewage pump B, wherein a sewage pumping port of the sewage pump A is arranged at the bottom of the tank in the water outlet bin A, and a sewage outlet is arranged in the water inlet bin A; the sewage pumping port of the sewage pumping pump B is arranged at the bottom of the algae culture pond, and the sewage draining port is arranged in the water inlet bin A of the bacteria culture biochemical integrated pond.
2. The system for purifying, converting and utilizing sewage and sludge without residue precipitation according to claim 1, wherein: the algae culture pond is divided into a water inlet bin B and a water outlet bin B through a partition B, a water outlet communicated with the water inlet bin B and the water outlet bin B is arranged above the partition B, the water inlet end of the water inlet bin B is connected and communicated with the water outlet end of the fungus culture biochemical integrated pond, and the water outlet end of the water outlet bin B is respectively connected and communicated with the water inlet ends of the flea culture domestication pond and the fungus and algae symbiotic pond;
the aeration pipe in the algae cultivation pond is a micro aeration pipe, the micro aeration pipe is paved at the pond bottom of the water inlet bin B, and a fungus bed is arranged at the upper end of the micro aeration pipe;
the sewage pumping port of the sewage pump B is arranged at the bottom of the water outlet bin B.
3. The system for purifying, converting and utilizing sewage and sludge without residue precipitation according to claim 1, wherein: the utility model also comprises a flea purifying tank, wherein the water inlet end of the flea purifying tank is communicated with the water outlet end of the bacteria-algae flea symbiotic tank through a pipeline; the water outlet end of the flea purifying tank is communicated with the water inlet end of the bacteria-algae-flea symbiotic tank, the flea culturing and domesticating integrated tank and the external water recovery station through pipelines, the pump body and the valve, the external water recovery station is used for recovering purified water, purified sewage is reused, and fleas in the flea purifying tank are used for producing baits for economic output or baits for other aquatic products in subsequent water culture.
4. The system for purifying, converting and utilizing sewage and sludge without residue precipitation according to claim 1, wherein: the sewage treatment device further comprises a sewage containing tank, wherein the water inlet end of the sewage containing tank is communicated with a pipeline of external sewage, and the water outlet end of the sewage containing tank is communicated with the water inlet end of the bacteria culture biochemical integrated tank through a pipeline valve and a pump body and is used for controlling the water inlet amount and the water inlet speed of the injected bacteria culture biochemical integrated tank.
5. The method for purifying, converting and utilizing sewage and sludge without sediment residue is characterized by comprising the following steps:
a, biochemical treatment of sewage:
a, innocent treatment: when sewage needs to be injected into the bacteria culture biochemical integrated tank, a pump body and a valve between the sewage holding tank and the bacteria culture biochemical integrated tank are opened, the flow and the total amount of the sewage in the bacteria culture biochemical integrated tank are controlled, an air pump connected with a strong aeration pipe in a water inlet bin A of the bacteria culture biochemical integrated tank is opened, the sewage in the water inlet bin A is aerated and oxygenated, meanwhile, the sewage is stirred by air flow, the sewage in the water inlet bin A is driven to circulate up and down, mud and water in the water inlet bin A are fully mixed, and oxygen is fully dissolved in the sewage, so that the dissolved oxygen content of the sewage is obviously improved, the survival, the propagation and the metabolism of anaerobic microorganisms in the sewage are inhibited, and meanwhile, the dissolved oxygen in the water can oxidize the reducing harmful substances generated by the metabolism of anaerobic bacteria;
b, biochemical treatment: the content of soluble oxygen in the sewage is improved, harmful reducing substances are reduced, aerobic beneficial bacteria are sequentially propagated in the sewage in the water inlet bin A, large-particle pollutants in the sewage are decomposed into small-particle organic chips in the propagation and growth process of the aerobic beneficial bacteria, the primary enrichment of nutrition in the sewage is completed, along with the gradual increase of the water injection rate in the water inlet bin A, the sewage flows into the water outlet bin A through the water outlet of the partition board A, the large-particle pollutants which are not decomposed in the sewage gradually precipitate in the water outlet bin A, and the small-particle organic matters are suspended in the water outlet bin A to form a mixed solution;
b, breeding and domesticating the miniature animals: sequentially injecting biochemical sewage into the flea culture and domestication pond, putting the micro-animals into the flea culture and domestication pond for culture and reproduction, sampling and observing, and searching the optimal water inflow of the cultured and reproduced micro-animals; the miniature animals comprise rotifers, cladocera, artemia and copepods;
c, purifying water quality: the process for purifying water quality comprises the steps of culturing beneficial algae species to purify water quality and fungus, algae and flea symbiotic purification water quality, putting the beneficial algae species into an algae culture pond, maintaining the beneficial algae species as dominant algae species, absorbing soluble nutrient substances in sewage by the beneficial algae species, continuously circulating the nutrient substances in the algae culture process, continuously inputting and breeding the algae under the action of a food chain, effectively ensuring that microorganisms such as algae are kept in an exponential growth period, and efficiently and rapidly absorbing and converting the nutrient substances, and discharging water and algae in the algae culture pond into a fungus culture biochemical integrated pond, a flea culture and domestication integrated pond or a fungus, algae and flea symbiotic pond to supplement dissolved oxygen therein or provide food for fleas in the flea culture and domestication integrated pond and the fungus, algae and flea symbiotic pond after the water quality purification process is completed;
The aerobic beneficial bacteria decompose large-particle pollutants in the sewage into small-particle organic chips and algae to absorb soluble nutrient substances in the water to form primary enrichment of nutrients in the sewage, and the fleas filter bacteria, the small-particle organic chips and the algae in the edible water to form secondary enrichment of the nutrients in the sewage;
and the sediment in the algae culture pond is cleaned by a sewage pump B at regular intervals and pumped into a bacteria culture biochemical integrated pond for re-decomposition by utilizing aerobic beneficial bacteria.
6. The method for purifying, converting and utilizing sewage and sludge without residue precipitation according to claim 5, wherein the method comprises the following steps: in the step A, in a water inlet bin A of the bacteria culture biochemical integrated tank, the primary injection amount of sewage is lower than one half of the existing water amount in the water inlet bin A, and meanwhile, the water inlet amount is adjusted according to the sewage load concentration to ensure the enrichment and activity of bacteria in the water inlet bin A, and the adjustment mode is that when the load concentration is low, the water inlet amount is increased;
the sediment in the water outlet bin A of the bacteria culture biochemical integrated tank is cleaned by a sewage pump A at regular intervals and is pumped into the water inlet bin A of the bacteria culture biochemical integrated tank, and then is decomposed by utilizing aerobic beneficial bacteria;
and the sewage pump B pumps the sediment in the water outlet bin B of the algae cultivation pond to the water inlet bin A of the bacteria cultivation biochemical integrated pond.
7. The method for purifying, converting and utilizing sewage and sludge without residue precipitation according to claim 6, wherein the method comprises the following steps: (original weight 10, method 2) the micro-animals in step B are fleas or longifolia in the class of cladocera;
the method for searching the optimal water inflow of the cultured and bred micro-animals comprises the steps of adjusting the water quality when the female fleas in the sleep state appear, wherein the adjusting measures comprise reducing the sewage water inflow, and when the young fleas appear, the female fleas are well bred, the sewage water inflow can be properly increased, and the circulation is carried out until the optimal water inflow is searched;
the inoculation density of the daphnia magna is 100-500/L;
the domestication mode of the daphnia magna is to gradually increase suspension and semi-suspension in a bacteria culture biochemical integrated tank and sewage in an algae culture tank in a normal water body, and gradually domesticate the daphnia magna, or to form a group containing resting eggs by adding excessive but non-lethal bacteria and algae mixed suspension solution in the normal water body;
after the domestication is finished, the flea cultivation and domestication pond can be used as a bacterial algae flea symbiotic pond or a flea cultivation backup pond.
8. The method for purifying, converting and utilizing sewage and sludge without precipitation residue according to claim 7, wherein the method comprises the following steps: in the step C, the method comprises the steps of (11/12/13), specifically, injecting the sewage in the water outlet bin A into a water inlet bin B of an algae culture pond, opening a micro-aeration pipe, performing micro-aeration on the sewage in a mixed solution state, adding aerobic beneficial bacteria into the water in the water inlet bin B, attaching and breeding the aerobic beneficial bacteria on a fungus bed, and further decomposing large-particle pollutants in the sewage in the water inlet bin B, so as to improve the content of small-particle organic matters and soluble nutrient substances in the sewage;
Along with the increase of the water level in the water inlet bin B, sewage overflows into the water outlet bin B from the water outlet of the partition B, beneficial algae seeds are put into the water outlet bin B and are maintained to be dominant algae seeds, and the beneficial algae seeds absorb soluble nutrient substances in the sewage, so that further primary enrichment of nutrition in the sewage is realized;
the bacterial algae and flea symbiotic purified water quality specifically comprises the steps of discharging part of fleas from a flea culture domestication pond to a bacterial algae and flea symbiotic pond, discharging surface water in a bacterial culture biochemical integrated pond and surface water in an algae culture pond into the bacterial algae and flea symbiotic pond as flea food, determining the discharge amount of microorganisms and small particle suspended matters in the flea filter water according to the adaptability of the fleas to sewage, determining reasons and making corresponding adjustment when the water quality of the sewage is not suitable for the survival of aerobic beneficial bacteria, algae and fleas, and keeping the normal reproduction of organisms in the bacterial algae and flea pond and the formation of benign food chains by adjusting the feeding amount of the fleas according to the state of the flora and the biological group of the fleas and the climate change;
the total amount of surface water in the bacteria culture biochemical integrated tank and the surface water in the algae culture tank which are discharged into the bacteria algae flea symbiotic tank every day is one tenth to one fifth of the total water volume of the tank, so that the transparency range of the water body is ensured to be 20-30 cm;
When the transparency of the water body is lower than 20cm, the water body represents that the water quality is not suitable for survival of aerobic beneficial bacteria, algae and fleas in the bacteria, algae and flea symbiotic tank, and at the moment, the adjustment measures comprise reducing the sewage inflow.
9. The method for purifying, converting and utilizing sewage and sludge without precipitation residues according to claim 8, wherein the method comprises the following steps: the process of purifying water in the step C (original right 14) further comprises purifying water by fleas, specifically comprising the steps of injecting the purified sewage in the bacteria-algae-flea symbiotic tank into the flea purifying tank, discharging algae and fleas only into the flea purifying tank to form a simple food chain, when the nutrition concentration in the flea purifying tank is high, the algae grows fast, the thrown amount of the fleas is increased for digestion, when the nutrition is thin, the fleas naturally produce dormant eggs, the quantity is reduced, the ingestion amount is reduced, when the environment is suitable, the dormant eggs are hatched again, the increasing speed of the algae in the water body is accelerated, the sewage is further purified in the flea purifying tank, and the method is suitable for most of domestic production water; the tail water purified in the flea purifying tank can be also conveyed into the flea culture and domestication tank or the bacterial algae flea symbiotic tank for adjusting the water quality in the flea culture and domestication tank or the bacterial algae flea symbiotic tank.
10. The method for purifying, converting and utilizing sewage and sludge without residue precipitation according to claim 5, wherein the method comprises the following steps: (original weight 7, method 1 for cultivating fleas) in step A, when the content of dissolved oxygen in the sewage of the bacteria cultivation biochemical integrated tank is higher than 1mg/L, discharging the sewage to the flea cultivation domestication tank for a plurality of times in a small amount;
The micro-animals in the step B are daphnia magna or longus in the class of cladocera; the breeding and domestication method comprises the steps of injecting normal water with the depth of 0.5-1.2 m into a flea culture and domestication pond, adjusting the acid-base value of the water in the flea culture and domestication pond to be 7.5-8, adding 300-500 kg/mu of livestock manure into the pond, and rapidly breeding the large fleas in the flea culture and domestication pond after 3-5 days, at the moment, discharging sewage in the biochemical pond into the flea culture and domestication pond, wherein the sewage discharged into the flea culture and domestication pond for the first time is less than one tenth of the existing water storage amount in the flea culture and domestication pond.
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| CN202211009433.4A CN115072879A (en) | 2022-08-23 | 2022-08-23 | System and method for biological purification and resource conversion and utilization of sewage |
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| CN202310439874.6A Pending CN117486373A (en) | 2022-08-23 | 2023-04-23 | System and method for purifying, converting and utilizing sewage and sludge without residue |
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| CN101462797A (en) * | 2009-01-09 | 2009-06-24 | 南京大学 | Method for screening and cultivating pollution resistant cladocera, and use thereof |
| CN101792238A (en) * | 2010-03-25 | 2010-08-04 | 董滨 | Water body in-situ restoration method of intelligent ecological integrated module |
| CN105541057B (en) * | 2016-03-03 | 2018-04-24 | 上海海洋大学 | A kind of method of pig farm biogas slurry recycling |
| CN108059247A (en) * | 2017-12-31 | 2018-05-22 | 温州大学 | A kind of sewage treatment unit |
| CN108911146B (en) * | 2018-09-10 | 2024-02-13 | 河北雄安德荫源环境科技有限公司 | Ecological treatment system for domestic sewage |
| TWM617825U (en) * | 2021-06-02 | 2021-10-01 | 石拓能源科技股份有限公司 | Daphnia breeding system using organic biological wastewater |
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