CN110818185A

CN110818185A - Efficient culture sewage treatment system

Info

Publication number: CN110818185A
Application number: CN201911124252.4A
Authority: CN
Inventors: 涂华荣; 李同; 齐德生; 张建设
Original assignee: Wuhan Hongxintian Environmental Protection Engineering Co Ltd
Current assignee: Wuhan Hongxintian Environmental Protection Engineering Co Ltd
Priority date: 2019-11-18
Filing date: 2019-11-18
Publication date: 2020-02-21

Abstract

The invention relates to the field of pig farm sewage treatment, in particular to a high-efficiency breeding sewage treatment system, which comprises an adjusting tank, a coagulating sedimentation tank, a UASB (upflow anaerobic sludge blanket) reactor, a primary denitrification reaction tank, a primary nitrification reaction tank, a primary sedimentation tank, a shortcut nitrification-denitrification device, a secondary sedimentation tank and an external drainage tank which are sequentially connected through a water pipeline, and further comprises a PLC (programmable logic controller) control system for controlling the sewage treatment process; the regulating reservoir comprises a first regulating chamber and a second regulating chamber which are communicated through an overflow valve, and further comprises a dosing device communicated with the first regulating chamber and an aeration device arranged in the first regulating chamber, wherein a water inlet and an air inlet are formed in the side edge of the first regulating chamber, and a water outlet and an air outlet are formed in the top of the first regulating chamber. The invention has high treatment efficiency and good treatment effect, is beneficial to energy conservation and environmental protection, does not cause secondary environmental pollution, and is beneficial to the health of various organisms and the protection of ecological environment.

Description

Efficient culture sewage treatment system

Technical Field

The invention relates to the field of pig farm sewage treatment, in particular to a high-efficiency breeding sewage treatment system.

Background

Along with the improvement of the living standard of people, the live pig breeding market scale is continuously expanded, the price of pork is high in the past year, the main reason is the spread of swine fever, and one reason for generating the swine plague is improper or incomplete treatment of excrement of pigs in a pig farm.

The pig farm sewage mainly comprises pig urine, partial pig manure, pigsty flushing water and sewage discharged by plant sanitary equipment and public buildings, and has the following characteristics: a. large and several water quantities and strong water conservancy impact load; b. the organic matter concentration is high, the ammonia nitrogen content is high, and the COD is generally 6000-7000 mg/L; c. the wastewater has good biodegradability, quick hydrolysis and acidification and good precipitation performance; d. the sewage is often polluted by disinfectant fluid, heavy metals, residual veterinary drugs, various zoonosis pathogens and the like.

These effluents are discharged directly, with the effect that: on one hand, the pollution to surface water, underground water sources and farmlands; the leaching amount of nitrogen, phosphorus, BOD and the like contained in the excrement is large, and the excrement enters surface water and underground water through surface runoff and soil or is accumulated in the soil, so that the water body is seriously polluted, and the land loses the production capacity. The optional discharge of the fecal sewage causes eutrophication of water bodies, and aquatic organisms (such as algae) immediately propagate in large quantities after obtaining rich nutrition, thus leading to river bed siltation, river water blacking and smelly and the like. In a second aspect, pollution of the atmospheric environment; the excrement and urine and sewage in the pig farm are piled or discharged in a low-lying place for a long time, so that foul smell is generated, mosquitoes and flies are bred, the atmospheric quality and the living environment are seriously affected, and the health is affected. In the third aspect, the pig excreta carries a large amount of pathogenic bacteria, such as escherichia coli, salmonella, enterococcus and other listeria monocytogenes, which can affect the health of human beings and other organisms when entering the environment.

In the prior art, the treatment scheme of the sewage of the pig farm is that after the solid-liquid separation is carried out on the pig manure of the pig farm, the solid manure is fermented by using a green-label facultative aerobe, the sewage is subjected to anaerobic treatment by using a green-label livestock farm sewage treatment microbial inoculum to generate biogas, and the sewage reaches the discharge standard through the procedures of anaerobic treatment, aerobic treatment, sterilization and the like, so that the sewage is directly put into a municipal sewage pipe network.

The sewage treatment scheme in the prior art has the following defects: on one hand, the treatment equipment has poor performance, incomplete solid-liquid separation, low treatment efficiency and poor treatment effect. In the second aspect, the traditional treatment method only treats organic matters in the sewage, but does not treat pathogenic bacteria in the sewage, still has the problems of environmental pollution and secondary pollution, and is not beneficial to the health of various organisms. In the third aspect, the sewage treatment efficiency is low.

Disclosure of Invention

In order to solve the problems, the invention provides the efficient culture sewage treatment system which has high treatment efficiency and good treatment effect, is beneficial to energy conservation and environmental protection, does not cause secondary environmental pollution, and is beneficial to the health of various organisms and the protection of ecological environment.

The technical scheme adopted by the invention is as follows: the high-efficiency culture sewage treatment system comprises a regulating tank, a coagulating sedimentation tank, a UASB reactor, a primary denitrification reaction tank, a primary nitrification reaction tank, a primary sedimentation tank, a shortcut nitrification-denitrification device, a secondary sedimentation tank and an external drainage tank which are sequentially connected through a water conveying pipeline, and also comprises a PLC control system for controlling the sewage treatment process; the regulating reservoir comprises a first regulating chamber and a second regulating chamber which are communicated through an overflow valve, and also comprises a dosing device communicated with the first regulating chamber and an aeration device arranged in the first regulating chamber, wherein the side edge of the first regulating chamber is provided with a water inlet and an air inlet, the top of the first regulating chamber is provided with a water outlet and an air outlet, and the aeration device is arranged at the bottom and the side wall of the first regulating chamber; the interior of the dosing device is filled with a microbial compound preparation, and the microbial compound preparation comprises pediococcus acidilactici, pediococcus pentosaceus, leuconostoc mesenteroides, lactobacillus plantarum, bacillus amyloliquefaciens, bacillus subtilis, lactobacillus acidophilus, powdery pichia pastoris and light and bacteria.

The technical scheme is further improved in that the aeration device comprises a plurality of transverse aeration pipes and a plurality of vertical aeration pipes, the transverse aeration pipes and the vertical aeration pipes are arranged in a crossed mode to form a grid shape, and a plurality of aeration holes are uniformly formed in the transverse aeration pipes and the vertical aeration pipes; the gas outlet is provided with an exhaust pipe, the top of the exhaust pipe is provided with an unpowered ventilator, and an adsorbing material for adsorbing pollutants is arranged inside the exhaust pipe.

The technical scheme is further improved in that the coagulating sedimentation tank comprises a stirring sedimentation unit and a filtering sedimentation unit, wherein a water inlet is formed in the upper part of the stirring sedimentation unit, and a water outlet is formed in the upper part of the filtering sedimentation unit; the filtering and precipitating unit is communicated with the stirring and precipitating unit through a wall body with a hole, and the bottoms of the stirring and precipitating unit and the filtering and precipitating unit are respectively provided with a sewage discharge pipeline connected with a sludge storage tank; a plurality of stirring and precipitating units are arranged, and two adjacent stirring and precipitating units are communicated with each other; the stirring precipitation unit comprises a stirring precipitation chamber, a motor arranged at the top of the stirring precipitation chamber, a stirring shaft connected to an output shaft of the motor, and a plurality of stirring blades arranged on the stirring shaft, and further comprises a dosing funnel arranged at the top of the stirring precipitation chamber and used for adding a flocculating agent, wherein the stirring shaft penetrates through the dosing funnel and extends into the stirring precipitation chamber.

The technical scheme is further improved in that the number of the stirring and precipitating units is three, the lower parts of the first stirring and precipitating unit and the second stirring and precipitating unit are communicated, the upper parts of the second stirring and precipitating unit and the third stirring and precipitating unit are communicated, and the lower parts of the third stirring and precipitating unit and the filtering and precipitating unit are communicated through a wall body with holes; the lengths of the stirring blades in the first stirring and precipitating unit are sequentially increased from top to bottom, the lengths of the stirring blades in the second stirring and precipitating unit are sequentially decreased from top to bottom, and the lengths of the stirring blades in the third stirring and precipitating unit are sequentially increased from top to bottom; the filtering and settling unit comprises a filtering and settling chamber, an inclined plate area which is positioned in the middle of the filtering and settling chamber and supported by a support frame, and a water collecting tank which is positioned at the upper part of the filtering and settling chamber and supported by a support angle steel; the water collecting tank is communicated with the water outlet; the filtering and precipitating unit also comprises a filtering cloth arranged on the supporting angle steel, the direction of the filtering cloth is opposite to that of the inclined plate area, and the filtering cloth is positioned above the inclined plate area; the wall body with the holes is positioned below the inclined plate area, and the wall body with the holes is uniformly provided with through holes through which liquid can flow but solids cannot pass.

The UASB reactor comprises a reaction chamber, a water inlet pipe with one end extending into the bottom of the reaction chamber, a mounting bracket vertically arranged at the bottom of the reaction type, a water distributor arranged at the top of the mounting bracket, a sludge reaction zone positioned below the water distributor in the reaction chamber, a suspension zone positioned above the water distributor in the reaction chamber and internally provided with granular fillers, three separators arranged at the top of the reaction chamber, an upper exhaust pipe and a drain pipe arranged at the top of the reaction chamber, and a sludge discharge pipe positioned below the reaction chamber, wherein one end of the water inlet pipe positioned outside the reaction chamber is connected with a sewage lift pump; the water distributor is in a round table shape with a small upper part and a big lower part, a reflecting plate used for reflecting sewage is arranged below the water distributor, and the reflecting plate is arranged on the mounting bracket.

The technical scheme is further improved in that a plurality of groups of baffles which are obliquely arranged are arranged on two sides above the suspension area, and the lengths of the baffles are sequentially increased from top to bottom; the included angle between the baffle and the side edge of the reaction chamber is 50 degrees, and the included angle between the baffle and the three separators is 90 degrees; a lower exhaust pipe is also arranged at the position of the side edge of the reaction chamber, which is positioned at the height below the three separators; an aeration device and an air inlet pipeline are also arranged in the sludge reaction zone in the reaction chamber; an internal circulating pump is arranged in the sludge reaction chamber.

The technical proposal is further improved that the short-cut nitrification-denitrification device comprises a nitrification reaction area and an anaerobic ammonia oxidation area; the nitrification reaction zone comprises a nitrification reaction tank body, the upper part of the nitrification reaction tank body is a nitrification reaction stirring zone, the lower part of the nitrification reaction tank body is a nitrification reaction filtering zone, and a nitrification reaction stirring device and a nitrifying bacteria filler are arranged in the nitrification reaction stirring zone; the upper part of the nitrification reaction tank body is provided with a nitrification reaction water inlet which is connected with the nitrification reaction stirring area, and the lower part of the nitrification reaction tank body is provided with a nitrification reaction water outlet which is connected with the nitrification reaction filtering area; the nitration reaction stirring zone and the nitration reaction filtering zone are separated by a permeable membrane; a nitration aeration device communicated with an external air source is also arranged in the nitration stirring zone, and a nitration sewage outlet for discharging solid pollutants is arranged in the nitration filtering zone; the anaerobic ammonia oxidation region comprises an anaerobic ammonia oxidation tank body, the upper part of the anaerobic ammonia oxidation tank body is an anaerobic ammonia oxidation stirring region, the lower part of the anaerobic ammonia oxidation tank body is an anaerobic ammonia oxidation filtering region, and an anaerobic ammonia oxidation stirring device and anaerobic ammonia oxidation bacteria filler are arranged in the anaerobic ammonia oxidation stirring region; the upper part of the anaerobic ammonia oxidation tank body is provided with an anaerobic ammonia oxidation water inlet together with the anaerobic ammonia oxidation stirring area, and the lower part of the anaerobic ammonia oxidation tank body is provided with an anaerobic ammonia oxidation water outlet together with the anaerobic ammonia oxidation filtering area; the anaerobic ammonia oxidation stirring area and the anaerobic ammonia oxidation filtering area are separated by a permeable membrane; the anaerobic ammonia oxidation filtering area is provided with an anaerobic ammonia oxidation sewage outlet for discharging solid pollutants; the anaerobic ammonia oxidation stirring area is provided with an anaerobic ammonia oxidation air outlet at the top, an anaerobic ammonia oxidation air inlet at the bottom, an anaerobic ammonia oxidation aeration device in the anaerobic ammonia oxidation stirring area, and the anaerobic ammonia oxidation aeration device is communicated with the anaerobic ammonia oxidation air inlet and the anaerobic ammonia oxidation air outlet through a gas transmission pipeline.

The anaerobic ammonia oxidation stirring device comprises a motor, a stirring shaft and stirring blades, wherein meshes are distributed on the surface of each stirring blade, catalytic iron is filled in each stirring blade, and baffles are arranged at two ends of each stirring blade; transparent observation windows are arranged on the nitrification reaction tank body and the anaerobic ammonia oxidation tank body respectively, and heat preservation layers are arranged outside the nitrification reaction tank body and the anaerobic ammonia oxidation tank body respectively; the nitration reaction zone is also connected with an ultrasonic generator which intermittently sends out ultrasonic waves under the control of a PLC control system; the ultrasonic energy density generated by the ultrasonic generator is 0.7W/mL and is periodic ultrasonic.

The further improvement to the technical scheme is that the PLC control system comprises electromagnetic flowmeters respectively arranged at a water inlet and a water outlet of the regulating tank, the coagulating sedimentation tank, the UASB reactor, the first-level denitrification reaction tank, the first-level nitrification reaction tank, the first-level sedimentation tank, the shortcut nitrification-denitrification device, the second-level sedimentation tank, an adjusting tank, the coagulating sedimentation tank, the UASB reactor, the first-level denitrification reaction tank, the first-level nitrification reaction tank, the first-level sedimentation tank, the shortcut nitrification-denitrification device, a liquid level meter in the second-level sedimentation tank, a thermometer, a PH meter, an ORP meter, a COD analyzer, a BOD analyzer, a TP analyzer, an ammonium nitrogen analyzer, a nitrate nitrogen analyzer, a nitrite nitrogen analyzer, an SS analyzer, a microbial preparation metering pump arranged at a medicine adding device outlet of the regulating tank, an acetic acid adding metering pump arranged at an anaerobic ammonia oxidation water inlet, A sodium acetate feeding metering pump and an ammonium bicarbonate feeding metering pump arranged at a nitration water inlet; the system also comprises a remote control terminal which is connected with the electromagnetic flow meter, the liquid level meter, the thermometer, the PH meter, the ORP meter, the COD analyzer, the BOD analyzer, the TP analyzer, the ammonium nitrogen analyzer, the nitrate nitrogen analyzer, the nitrite nitrogen analyzer, the SS analyzer, the acetic acid feeding metering pump, the sodium acetate feeding metering pump, the ammonium bicarbonate feeding metering pump and the microbial preparation metering pump.

The technical scheme is further improved in that the C/N of the sewage flowing through the anaerobic ammonia oxidation water inlet in the stirring area is maintained to be 5 by controlling the addition of acetic acid and sodium acetate by the remote control terminal.

The invention has the beneficial effects that:

1. the invention is provided with an adjusting tank, a coagulating sedimentation tank, a UASB reactor, a first-stage denitrification reaction tank, a first-stage nitrification reaction tank, a first-stage sedimentation tank, a shortcut nitrification-denitrification device, a second-stage sedimentation tank and an effluent tank, wherein the water quality of the sewage to be treated is adjusted by the adjusting tank to prevent the subsequent reactor from being impacted by the overlarge water quality load, then suspended matters in the sewage are filtered by the coagulating sedimentation tank, organic pollutants in the sewage are removed by the UASB reactor, then the sewage enters the first-stage denitrification reaction tank and the first-stage nitrification reaction tank to remove nitrogen source pollutants, then the sewage is precipitated by the sedimentation tank, residual nitrogen source pollutants are converted into nitrogen by the shortcut nitrification-denitrification device, and finally secondary precipitation is carried out, the treated clear water enters the effluent tank to be discharged, the whole sewage treatment process flow is simple, the construction cost is low, and the effluent tank is easy to use, Does not produce secondary pollution, can effectively remove pollutants such as COD, BOD, TP, ammonium nitrogen, nitrate nitrogen, nitrite nitrogen, SS and the like in sewage, and has high sewage treatment efficiency and good treatment effect.

2. The system is provided with a PLC control system for controlling the sewage treatment process, the sewage parameters of all links are monitored in real time through the PLC control system, automatic detection of sewage treatment and automatic addition of microorganisms and various medicines in automatic proportioning are realized, the automation degree is high, more or less medicines cannot be added, the treatment effect is good, and energy conservation and environmental protection are facilitated.

3. The equalizing basin comprises a first adjusting chamber and a second adjusting chamber which are communicated through an overflow valve, and further comprises a dosing device communicated with the first adjusting chamber and an aeration device arranged in the first adjusting chamber, wherein a water inlet and an air inlet are formed in the side edge of the first adjusting chamber, a water outlet and an air outlet are formed in the top of the first adjusting chamber, and the aeration device is arranged at the bottom and the side wall of the first adjusting chamber. The equalizing basin is equipped with first regulating chamber and second regulating chamber, when the big first regulating chamber of sewage inflow was deposited with water, unnecessary sewage gets into the temporary storage of second regulating chamber, when the sewage inflow is too little, sewage in the second regulating chamber flows into first equalizing basin through the overflow valve, reentrant coagulating sedimentation pond, setting through the second regulating chamber, make the sewage water yield that gets into follow-up processing unit can not be suddenly too big or the undersize, can not cause too big load and impact to the operation in following coagulating sedimentation pond, be favorable to maintaining whole sewage treatment system's normal function, further be favorable to improving sewage treatment efficiency, improve treatment effect.

4. The chemical adding device of the regulating reservoir is filled with a microorganism composite preparation, and the microorganism composite preparation comprises pediococcus acidilactici, pediococcus pentosaceus, leuconostoc mesenteroides, lactobacillus plantarum, bacillus amyloliquefaciens, bacillus subtilis, lactobacillus acidophilus, powdery pichia pastoris and light and bacteria. Wherein the Pediococcus acidilactici is Pediococcus and Pediococcus acidilactici strain, and has the functions of producing acid, regulating gastrointestinal tract flora and maintaining intestinal tract microecological balance. The bacteriocin of Pediococcus acidilactici can inhibit the growth of microorganisms such as Lactobacillus, Leuconostoc, Staphylococcus aureus, Clostridium perfringens, Pseudomonas putida, and Listeria monocytogenes. Has protease sensitive and heat stable effects. Bacteriocins produced by Pediococcus pentosaceus inhibit gram-positive pathogenic bacteria such as Bacillus cereus, Clostridium perfringens, Staphylococcus aureus, and Listeria monocytogenes. Leuconostoc mesenteroides can ferment saccharides to generate a plurality of acids and alcohols, and has high acid production capacity, oxidation resistance, pathogenic bacteria antagonism and other capacities. Lactobacillus plantarum is a kind of lactic acid bacteria that produces characteristic lactobacillin during reproduction, a biological type preservative; has the functions of purifying water quality, decomposing organic matters, deodorizing, degrading ammonia nitrogen, nitrite and other harmful matters, maintaining smooth bathing phase and bacterial phase, lowering pH value of stable water body, etc. Bacillus amyloliquefaciens can produce various antibacterial substances, including polypeptides, lipopeptides, antibacterial proteins and the like. Wherein the bacteriostatic protein can act on the cell wall of the pathogenic fungi to increase the membrane permeability of the pathogenic fungi, thereby inhibiting the growth of the pathogenic fungi. Active substances such as subtilin, polymyxin, nystatin, gramicidin and the like generated in the growth process of bacillus subtilis have obvious inhibiting effect on pathogenic bacteria or conditional pathogenic bacteria of endogenous infection. Can be applied to municipal administration and breeding sewage treatment, industrial circulating water treatment, treatment of septic tanks, septic tanks and the like, treatment of livestock breeding animal waste and odor, a fecal treatment system, treatment of garbage, manure pits, septic tanks and the like. Lactobacillus acidophilus has antagonistic effect on pathogenic microorganisms, and can secrete antibiotic substances (acidophilic lactocin (acidophilolin), acidophilic colin (acidophilophilin), and lactein (1 aerocidin)) for antagonizing intestinal pathogenic bacteria. On the one hand, the pichia farinosa can effectively decompose various carbohydrates, sugar, starch and various protein amino acids and provide nutrient substances required by proliferation for other effective microorganisms. In the second aspect, the yeast can secrete various enzymes, such as cellulase, hemicellulase, xylanase, amylase, pectinase, ligninase and the like, and can degrade organic substances of pollutants more effectively. In the third aspect, under the condition of carbon source supply, the pichia pastoris powder can carry out nitration reaction to decompose ammonia nitrogen into nitrate, thereby achieving the purposes of ammonia nitrogen degradation and deodorization. Light and bacteria, under anaerobic conditions, photosynthetic bacteria hydrolyze through extracellular protease to convert organic nitrogen in sewage into amino acid, then ammonia nitrogen is generated through deamination, and the generated ammonia nitrogen and the original ammonia nitrogen in the sewage are assimilated into photosynthetic bacteria for bacterial strain growth and propagation. Meanwhile, the photosynthetic bacteria with denitrification activity rely on nitrate reductase, nitrite reductase, nitric oxide reductase and nitrous oxide reductase, nitrate or nitrite in sewage is taken as a final electron acceptor, and external simple organic matters (such as acetic acid, amino acid, saccharides and the like) are taken as hydrogen donors to carry out denitrification. The denitrification is divided into assimilation and dissimilation, under the assimilation, nitrate and nitrite are converted into ammonia nitrogen and can be assimilated and utilized by bacteria, under the dissimilation, the nitrate and nitrite are reduced into gaseous nitrogen and discharged out of a water body, and the dissimilation is a main way for removing nitrogen. Therefore, various organic compounds and organic pollutants in the aquaculture sewage can be oxidized or/and decomposed through the action of microorganisms, and the sewage treatment effect and the sewage treatment efficiency are further improved. In the second aspect, the various bacteria in the active microorganism combined biological preparation take organic substances in pollutants as food, the bacteria can be gradually reduced along with the reduction of the pollutants after the sewage is purified, and the bacteria can die due to the lack of food supply when the pollutants are completely removed, so that the invention can completely remove various pollutants, has good treatment effect and can not cause secondary pollution. And in the third aspect, under the action of the PLC control system, various parameters of the sewage entering the regulating tank are automatically detected, so that the addition of the microorganisms is automatically calculated according to the follow-up parameters, the resource waste is avoided, and the sewage treatment efficiency is high.

5. The aeration device comprises a plurality of transverse aeration pipes and a plurality of vertical aeration pipes, the transverse aeration pipes and the vertical aeration pipes are arranged in a crossed mode to form a grid shape, and a plurality of aeration holes are uniformly formed in the transverse aeration pipes and the vertical aeration pipes; aeration equipment's setting has improved the dissolved oxygen volume in the sewage for sewage can carry out abundant reaction with the microorganism, and the stirring that promotes sewage that simultaneously can be better mixes, makes sewage quality of water more even unanimous, adjusts effectually, is favorable to improving follow-up sewage treatment efficiency. And under the effect of PLC control system, aeration rate can be adjusted according to the quality of water condition to aeration equipment for the better decomposition of pollutant, quality of water can be better adjusted.

6. The gas outlet is provided with an exhaust pipe, the top of the exhaust pipe is provided with an unpowered ventilator, and the exhaust pipe is internally provided with an adsorption material for adsorbing pollutants. Through the setting of blast pipe, can in time with the gaseous discharge that produces among the sewage treatment process, prevent that the gaseous pressure in the equalizing basin is too big to cause the explosion, the setting of adsorbing material can the odor in the effective absorption gas, plays the deodorization function, prevents that the odor from causing secondary pollution, has further improved sewage treatment effect.

7. The coagulating sedimentation tank comprises a stirring sedimentation unit and a filtering sedimentation unit, wherein a water inlet is formed in the upper part of the stirring sedimentation unit, and a water outlet is formed in the upper part of the filtering sedimentation unit; the filtering and precipitating unit is communicated with the stirring and precipitating unit through a wall body with a hole, and the bottoms of the stirring and precipitating unit and the filtering and precipitating unit are respectively provided with a sewage discharge pipeline connected with a sludge storage tank; a plurality of stirring and precipitating units are arranged, and two adjacent stirring and precipitating units are communicated with each other; the stirring precipitation unit comprises a stirring precipitation chamber, a motor arranged at the top of the stirring precipitation chamber, a stirring shaft connected to an output shaft of the motor, and a plurality of stirring blades arranged on the stirring shaft, and further comprises a dosing funnel arranged at the top of the stirring precipitation chamber and used for adding a flocculating agent, wherein the stirring shaft penetrates through the dosing funnel and extends into the stirring precipitation chamber. According to the invention, sewage with solid impurities enters the stirring and precipitating unit through the water inlet, the sewage is stirred through the stirring and precipitating unit firstly, so that solid and liquid in the sewage are separated, then the sewage is subjected to primary precipitation to realize primary solid-liquid separation, the sewage subjected to primary precipitation enters the filtering and precipitating tank through the wall body with the holes, other fine impurities in the sewage are filtered and separated, finally clean water is discharged through the water outlet, and sludge at the bottoms of the stirring and precipitating unit and the filtering and precipitating unit enters the sludge storage tank through the sewage discharge pipeline to realize precipitation of particulate impurities in the sewage. On one hand, the invention has high precipitation efficiency, and SS in water discharged from the water outlet can meet the requirements of national standards. In the second aspect, the stirring and precipitating units are provided with a plurality of units, and two adjacent units are communicated with each other, so that stirring and precipitation for a plurality of times are realized, and the precipitation efficiency is further improved. The third aspect, the stirring precipitation unit is including stirring the deposit room, install in the motor at stirring deposit room top, connect in the (mixing) shaft of motor output shaft, install a plurality of stirring vane on the (mixing) shaft, still offer the medicine funnel that adds that is used for adding the flocculating agent including seting up in stirring deposit room top, the (mixing) shaft passes and stretches into inside the stirring deposit room with the medicine funnel, in adding the sewage in the stirring deposit room with the flocculating agent through adding the medicine funnel, stirring vane stirs sewage, make the particulate matter in the sewage can be fast comprehensive and the flocculating agent contact, thereby impurity such as particulate matter in the better sediment sewage, further improved precipitation efficiency.

8. The stirring precipitation unit is three, the lower parts of the first stirring precipitation unit and the second stirring precipitation unit are communicated, the upper parts of the second stirring precipitation unit and the third stirring precipitation unit are communicated, and the lower parts of the third stirring precipitation unit and the filtering precipitation unit are communicated through a wall body with holes. After sewage enters the first stirring precipitation unit, the sewage is stirred and precipitated, particulate matters in the sewage are precipitated for the first time, cleaner sewage after the first precipitation enters the second stirring precipitation unit through the lower part, the particulate matters in the sewage are precipitated for the second time through stirring and precipitation, cleaner sewage after the second precipitation enters the second stirring precipitation unit through the upper part, the particulate matters in the sewage after treatment are basically and completely removed through stirring and precipitation, but a small part of particulate matters are still not completely removed, and the sewage enters the filtering precipitation unit to further remove smaller suspended matters. Through multi-stage treatment, thoroughly remove particulate matter impurity such as the suspended solid in the sewage, deposit efficiently, SS can reach the national standard requirement in the delivery port exhaust aquatic.

9. Stirring vane in the first stirring precipitation unit increases from last length down in proper order, can produce from last vortex down, and the suspended solid in the sewage can be fast and flocculating agent flocculation and precipitation on the one hand, and on the other hand, under the vortex effect, the clear water can be quick the lower part through first stirring precipitation unit enter into the second stirring precipitation unit. The arrangement of the stirring blades in the second stirring and precipitating unit and the third stirring and precipitating unit can also make the clean water flow into the next processing unit quickly. Through the setting of stirring vane length, further improved the treatment effeciency of sewage, improved the treatment effect.

10. The filtering and settling unit comprises a filtering and settling chamber, an inclined plate area which is positioned in the middle of the filtering and settling chamber and supported by a support frame, and a water collecting tank which is positioned at the upper part of the filtering and settling chamber and supported by a support angle steel; the water collecting tank is communicated with the water outlet. When the sewage flows to the inclined plate area, suspended matters in the sewage are separated from the water after colliding with the inclined plate, the suspended matters fall to the sludge area at the bottom due to the action of gravity, the clear water continuously flows, and when the clear water is gathered in the water collecting tank, the liquid level of the water collecting tank is higher than the water outlet, the clear water is discharged through the water outlet. Suspended matters in the sewage are further removed through the inclined plate area, and clear water is stored in the water collecting tank and is discharged through the water outlet, so that the sewage treatment efficiency is further improved, and the treatment effect is improved.

11. The filtering and precipitating unit further comprises a filtering cloth arranged on the supporting angle steel, the filtering cloth and the inclined plate are opposite in direction, the filtering cloth is located above the inclined plate, when clear water is gradually accumulated to the filtering cloth, the filtering cloth filters impurities in the clear water again, smaller particle impurities in the water are removed, the sewage treatment efficiency is further improved, and the treatment effect is improved.

12. The perforated wall body is positioned below the inclined plate area, perforations through which liquid can flow but solids cannot pass are uniformly formed in the perforated wall body, and the perforated wall body has the functions of filtering, water distribution, permeation and the like, so that the sewage treatment efficiency is further improved, and the treatment effect is improved.

13. The UASB reactor comprises a reaction chamber, a water inlet pipe with one end extending into the bottom of the reaction chamber, a mounting bracket vertically arranged at the bottom of the reaction type, a water distributor arranged at the top of the mounting bracket, a sludge reaction zone positioned below the water distributor in the reaction chamber, a suspension zone positioned above the water distributor in the reaction chamber and internally provided with granular fillers, three separators arranged at the top of the reaction chamber, an upper exhaust pipe and a drain pipe arranged at the top of the reaction chamber, and a sludge discharge pipe positioned below the reaction chamber, wherein one end of the water inlet pipe positioned outside the reaction chamber is connected with a sewage lift pump; the water distributor is in a round table shape with a small upper part and a big lower part, a reflecting plate used for reflecting sewage is arranged below the water distributor, and the reflecting plate is arranged on the mounting bracket. On one hand, sewage enters the reaction chamber through the water inlet pipe, uniform water distribution is realized after passing through the water distributor, the uniformly mixed water rises to a suspension area, organic pollutants in the sewage are treated, then the sewage rises to the three separators, solid-liquid-gas separation is realized, methane is discharged through the exhaust pipe, clear water is discharged through the drain pipe, solid particles in the sewage fall to the suspension area for further decomposition, then the sewage enters the sludge reaction area, the particle pollutants are gradually decomposed by microbial anaerobic fermentation and sequentially reciprocate until the pollutants in the sewage are all converted into water and methane, and the reactor is simple in structure, high in treatment efficiency on the cultured sewage and good in treatment effect. In the second aspect, the aeration device is arranged in the sludge reaction zone, so that the sewage and the anaerobic sludge are fully mixed, solid organic matters in the sewage can be fully decomposed, and the sewage treatment effect is further improved. In the third aspect, the suspension zone is internally provided with granular fillers, which not only prolongs the retention time of sewage, but also is beneficial to biofilm formation and improves the biological purification efficiency. In the fourth aspect, the water distributor is in a round table shape with a small top and a large bottom, a reflecting plate used for reflecting sewage is arranged below the water distributor, the reflecting plate is installed on the installation support, the contact area of the water distributor and the sewage is large, the water distribution area is large, the water distribution effect is good, and the reflecting plate is arranged.

14. The both sides of suspension district top still are equipped with the baffle that a plurality of groups slope set up, baffle from the top down length increases in proper order, the setting of a plurality of baffle, and one comes to play the effect of water conservancy diversion to the solid in the sewage, and two come through the collision of solid with the baffle, further smash solid particle to accelerate sewage treatment efficiency.

15. The baffle is 50 with the contained angle of reacting chamber side, and the baffle is 90 with the contained angle of three separators, and the baffle is fallen perpendicularly to the mud of three-phase separator department on, and the baffle does greatly to the impact of mud this moment, is further favorable to smashing solid particle to accelerate sewage treatment efficiency.

16. The side edge of the reaction chamber is also provided with a lower exhaust pipe at the height position below the three separators, so that the methane separated from the baffle plate can be discharged out of the reaction chamber in time, and the sewage treatment efficiency is further improved.

17. An aeration device and an air inlet pipeline are further arranged in the sludge reaction area in the reaction chamber, inert gas can be filled into the reaction chamber through the air inlet pipeline, when the solid concentration in the reaction chamber is too high, solid particles are fully contacted with microorganisms in the sludge reaction area through aeration, the oxidative decomposition of the microorganisms is accelerated, the sewage treatment efficiency and treatment effect are further improved, and the effluent quality is improved.

18. The one end that the inlet tube is located the reacting chamber is connected with a sewage elevator pump, is equipped with an internal circulating pump in the sludge reaction chamber, handles in going into the reacting chamber with sewage from supreme down through the sewage elevator pump, through the internal circulating pump, starts when the water quality is undulant greatly, has improved the upwelling speed of sewage, has increased the bulk strength in mud reaction zone, has improved the treatment effeciency of mass transfer speed and reactor, has further improved sewage treatment efficiency, has improved the sewage treatment effect.

19. The short-cut nitrification-denitrification device comprises a nitrification reaction area and an anaerobic ammonia oxidation area; the nitrification reaction zone comprises a nitrification reaction tank body, the upper part of the nitrification reaction tank body is a nitrification reaction stirring zone, the lower part of the nitrification reaction tank body is a nitrification reaction filtering zone, and a nitrification reaction stirring device and a nitrifying bacteria filler are arranged in the nitrification reaction stirring zone; the upper part of the nitrification reaction tank body is provided with a nitrification reaction water inlet which is connected with the nitrification reaction stirring area, and the lower part of the nitrification reaction tank body is provided with a nitrification reaction water outlet which is connected with the nitrification reaction filtering area; the nitration reaction stirring zone and the nitration reaction filtering zone are separated by a permeable membrane; a nitration aeration device communicated with an external air source is also arranged in the nitration stirring zone, and a nitration sewage outlet for discharging solid pollutants is arranged in the nitration filtering zone; the anaerobic ammonia oxidation region comprises an anaerobic ammonia oxidation tank body, the upper part of the anaerobic ammonia oxidation tank body is an anaerobic ammonia oxidation stirring region, the lower part of the anaerobic ammonia oxidation tank body is an anaerobic ammonia oxidation filtering region, and an anaerobic ammonia oxidation stirring device and anaerobic ammonia oxidation bacteria filler are arranged in the anaerobic ammonia oxidation stirring region; the upper part of the anaerobic ammonia oxidation tank body is provided with an anaerobic ammonia oxidation water inlet together with the anaerobic ammonia oxidation stirring area, and the lower part of the anaerobic ammonia oxidation tank body is provided with an anaerobic ammonia oxidation water outlet together with the anaerobic ammonia oxidation filtering area; the anaerobic ammonia oxidation stirring area and the anaerobic ammonia oxidation filtering area are separated by a permeable membrane; the anaerobic ammonia oxidation filtering area is provided with an anaerobic ammonia oxidation sewage outlet for discharging solid pollutants; the anaerobic ammonia oxidation stirring area is provided with an anaerobic ammonia oxidation air outlet at the top, an anaerobic ammonia oxidation air inlet at the bottom, an anaerobic ammonia oxidation aeration device in the anaerobic ammonia oxidation stirring area, and the anaerobic ammonia oxidation aeration device is communicated with the anaerobic ammonia oxidation air inlet and the anaerobic ammonia oxidation air outlet through a gas transmission pipeline. On one hand, under the action of the PLC control system, the nitrogen source pollutants are converted into nitrite through the nitration reaction zone, and then the nitrite is directly converted into nitrogen through the anaerobic ammonia oxidation zone to be discharged, so that the decomposition of the nitrogen source pollutants is realized, and the sewage treatment efficiency is high. In a second aspect, the nitration reaction zone comprises a nitration reaction tank body, the upper part of the nitration reaction tank body is a nitration reaction stirring zone, the lower part of the nitration reaction tank body is a nitration reaction filtering zone, and a nitration reaction stirring device and a nitrifying bacteria filler are arranged in the nitration reaction stirring zone; the upper part of the nitrification reaction tank body is provided with a nitrification reaction water inlet which is connected with the nitrification reaction stirring area, and the lower part of the nitrification reaction tank body is provided with a nitrification reaction water outlet which is connected with the nitrification reaction filtering area; the nitration reaction stirring zone and the nitration reaction filtering zone are separated by a permeable membrane; the nitrification reaction stirring area is also internally provided with a nitrification reaction aeration device communicated with an external air source, the nitrification reaction filtering area is provided with a nitrification reaction drain outlet for discharging solid pollutants, the nitrification reaction area is internally provided with oxygen under the action of the PLC control system, nitrifying bacteria convert nitrogen source pollutants into nitrite, after the conversion is completed, the PLC control system controls the nitrification reaction aeration device to stop supplying oxygen, the nitrite is prevented from being oxidized into nitrate, the short-range nitrification reaction treatment efficiency is high, and the treatment effect is good.

20. In the anaerobic ammonia oxidation zone, sewage subjected to nitration reaction enters the anaerobic ammonia oxidation tank body through an anaerobic ammonia oxidation water inlet at the upper part of the anaerobic ammonia oxidation tank body, nitrite in the sewage reacts with microorganisms after being stirred and filtered by microorganism fillers in the anaerobic ammonia oxidation stirring zone, nitrogen source pollutants are decomposed into nitrogen, the treated sewage enters the anaerobic ammonia oxidation filtering zone through an osmotic membrane, impurities such as solid particles in the sewage are precipitated and then discharged through an anaerobic ammonia oxidation sewage outlet, and treated clean water is discharged from an anaerobic ammonia oxidation water outlet at the lower part of the anaerobic ammonia oxidation tank body. In the anaerobic ammonia oxidation process, microorganisms are decomposed into nitrogen through nitrite, the nitrogen is discharged from the upper part of the anaerobic ammonia oxidation tank body through an anaerobic ammonia oxidation outlet, enters an anaerobic ammonia oxidation inlet through a gas conveying pipeline, enters an anaerobic ammonia oxidation aeration device, and is used for aerating pollution in an anaerobic ammonia oxidation stirring area, so that the fluidity of sewage is improved, the contact area of the sewage and microorganism fillers is increased, meanwhile, the anaerobic ammonia oxidation stirring device is used for stirring the sewage in the anaerobic ammonia oxidation stirring area, the fluidity of the sewage is further improved, and in the whole anaerobic ammonia oxidation process, all parameters in the anaerobic ammonia oxidation tank body are monitored in real time through a PLC (programmable logic controller) control system. On one hand, the system adopts PLC control, has high automation degree, adjusts various parameters in the anaerobic ammonia oxidation tank by monitoring various parameters in real time, ensures that the anaerobic ammonia oxidation reaction is in a high-efficiency proceeding state, and has high sewage treatment efficiency and good effluent quality. In the second aspect, the anaerobic ammonia oxidation aeration device and the anaerobic ammonia oxidation stirring device are adopted to simultaneously improve the fluidity of the sewage, so that the sewage can be fully contacted with the microbial filler, the anaerobic ammonia oxidation treatment effect of the sewage is ensured, the sewage treatment efficiency is further high, and the effluent quality is good. In the third aspect, the gas of the anaerobic ammonia oxidation aeration device adopts nitrogen generated by anaerobic ammonia oxidation, and the anaerobic ammonia oxidation tank body is in a closed shape, so that outside air cannot be introduced in the anaerobic ammonia oxidation process, dissolved oxygen in sewage cannot be increased, nitrite cannot be oxidized into nitrate, and the problem of hindering the anaerobic ammonia oxidation process is solved, the efficient and high-quality anaerobic ammonia oxidation reaction in the tank body is further ensured, the sewage treatment efficiency is high, and the quality of effluent water is good.

21. And the remote control terminal maintains the C/N of the sewage entering the anaerobic ammonia oxidation zone to be 5 by controlling the addition of acetic acid and sodium acetate. The anaerobic ammonium oxidation bacteria are heterotrophic facultative anaerobes, organic matters are consumed by cell synthesis growth of the anaerobic ammonium oxidation bacteria, when the C/N value is low, the available organic matters are few, the synthesis of denitrifying bacteria is blocked, and the denitrifying effect is poor, so a carbon source is required to be added to improve the C/N value, when the C/N value is high, the carbon source is excessively added, the carbon source is wasted, the COD (chemical oxygen demand) concentration of effluent exceeds the standard, when the C/N value is 5, the microorganism concentration is high, the denitrifying effect is good, the removal rate of TN (total nitrogen) can reach 89%, and the effluent quality is good.

22. The anaerobic ammonia oxidation stirring device comprises a motor, a stirring shaft and stirring blades, wherein meshes are fully distributed on the surfaces of the stirring blades, catalytic iron is filled in the stirring blades, and baffles are arranged at two ends of each stirring blade; the remote control terminal is electrically connected with the motor. According to the dissolved oxygen data acquired by the remote control terminal in real time, the output power of the motor is adjusted to change the stirring speed, so that the whole anaerobic ammonia oxidation system is efficiently operated. Meanwhile, the catalytic iron in the stirring blades is contacted with the anaerobic ammonium oxidation bacteria and the sewage in the stirring process, so that the catalytic effect is achieved, the anaerobic ammonium oxidation efficiency is improved, and the sewage treatment efficiency is further improved.

23. The length of the stirring blades is gradually shortened from top to bottom, and the stirring blades are of a structure with a long top and a short bottom, so that a vortex can be generated in the stirring process, the contact between sewage and anaerobic ammonia oxidizing bacteria is increased, the anaerobic ammonia oxidizing speed is increased, and the sewage treatment efficiency is further improved.

24. Transparent observation windows are all opened on the nitrification reaction tank body and the anaerobic ammonia oxidation tank body, the inside nitrification and denitrification are convenient to observe, the use is convenient, and the nitrification reaction tank body and the outside of the anaerobic ammonia oxidation tank body are both provided with heat preservation layers, so that the system can maintain proper temperature, the activity of nitrobacteria and anaerobic ammonia oxidation bacteria is ensured, the nitrification reaction and the anaerobic ammonia oxidation speed are accelerated, and the sewage treatment efficiency is further improved.

25. The nitration reaction zone is also connected with an ultrasonic generator which intermittently sends out ultrasonic waves under the control of the PLC control system; the ultrasonic energy density generated by the ultrasonic generator is 0.7W/mL and is periodic ultrasonic. The short-cut nitrification can be promoted by the periodic ultrasonic wave of 0.7W/mL, nitrite can be accumulated, the subsequent anaerobic ammonia oxidation can be started conveniently, the activity of the nitrite oxidase can be inhibited by strengthening the activity of the ammonia monooxygenase by the ultrasonic wave, the short-cut nitrification can be promoted, the nitrate can be inhibited from being converted into the nitrite, and the sewage treatment efficiency can be further improved.

26. The PLC control system comprises electromagnetic flow meters which are respectively arranged at a water inlet and a water outlet of the regulating tank, the coagulating sedimentation tank, the UASB reactor, the primary denitrification reaction tank, the primary nitrification reaction tank, the primary sedimentation tank, the shortcut nitrification-denitrification device and the secondary sedimentation tank, the system comprises a regulating tank, a coagulating sedimentation tank, a UASB reactor, a primary denitrification reaction tank, a primary nitrification reaction tank, a primary sedimentation tank, a shortcut nitrification-denitrification device, a liquid level meter, a thermometer, a PH meter, an ORP meter, a COD analyzer, a BOD analyzer, a TP analyzer, an ammonium nitrogen analyzer, a nitrate nitrogen analyzer, a nitrite nitrogen analyzer and an SS analyzer in the secondary sedimentation tank, and also comprises a microbial agent metering pump arranged at the outlet of a dosing device of the regulating tank, an acetic acid dosing metering pump arranged at an anaerobic ammonia oxidation water inlet, a sodium acetate dosing metering pump and an ammonium bicarbonate dosing metering pump arranged at a nitrification reaction water inlet; the system also comprises a remote control terminal which is connected with the electromagnetic flow meter, the liquid level meter, the thermometer, the PH meter, the ORP meter, the COD analyzer, the BOD analyzer, the TP analyzer, the ammonium nitrogen analyzer, the nitrate nitrogen analyzer, the nitrite nitrogen analyzer, the SS analyzer, the acetic acid feeding metering pump, the sodium acetate feeding metering pump, the ammonium bicarbonate feeding metering pump and the microbial preparation metering pump. The method comprises the steps of monitoring indexes such as pollutant concentration and water quality parameters in a system in real time through an electromagnetic flow meter, a liquid level meter, a thermometer, a PH meter, an ORP meter, a COD analyzer, a BOD analyzer, a TP analyzer, an ammonium nitrogen analyzer, a nitrate nitrogen analyzer, a nitrite nitrogen analyzer and an SS analyzer, feeding back the indexes to a remote control terminal in time, controlling the start and stop of a nitrification reaction aeration device by the remote control terminal according to the indexes such as ORP value, nitrate nitrogen concentration, nitrite nitrogen concentration and ammonium nitrogen concentration in a nitrification reaction area to prevent nitrite from being oxidized into nitrate, and controlling an acetic acid feeding metering pump, a sodium acetate feeding metering pump and an ammonium bicarbonate feeding metering pump to work according to the indexes such as nitrate nitrogen concentration, nitrite nitrogen concentration, ammonium nitrogen concentration and COD concentration of effluent water of a nitrification reaction tank body and influent water of an anaerobic ammonia oxidation tank body by the remote control terminal at the same time, the method has the advantages that indexes such as C/N and nitrous acid concentration of water in the anaerobic ammonia oxidation tank meet requirements of anaerobic ammonia oxidation, anaerobic ammonia oxidation can be rapidly and efficiently conducted, nitrite is effectively started to be converted into nitrogen, nitrate is reduced, sewage treatment efficiency is high, and automation degree is high.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic diagram of the structure of a conditioning tank of the present invention;

FIG. 3 is a schematic structural view of an aeration apparatus of a conditioning tank according to the present invention;

FIG. 4 is a schematic structural diagram of a coagulating sedimentation tank of the invention;

FIG. 5 is a schematic structural view of a perforated wall of the coagulation sedimentation tank of the present invention;

FIG. 6 is a schematic diagram of the structure of a UASB reactor of the present invention;

FIG. 7 is a schematic structural diagram of the shortcut nitrification-denitrification apparatus of the present invention.

Fig. 8 is a control schematic of the present invention.

Detailed Description

The invention will be further described with reference to the accompanying drawings.

Fig. 1 shows a schematic diagram of the structure of the present invention.

The invention is provided with an adjusting tank 100, a coagulating sedimentation tank 200, a UASB reactor 300, a primary denitrification reaction tank 400, a primary nitrification reaction tank 500, a primary sedimentation tank 600a, a shortcut nitrification-denitrification device 700, a secondary sedimentation tank 600b and an external drainage water tank 800, firstly, the water quality of sewage to be treated is adjusted through the adjusting tank 100 to prevent the impact of the excessive water quality load on the subsequent reactor, then suspended matters in the sewage are filtered through the coagulating sedimentation tank 200, then organic pollutants in the sewage are removed through the UASB reactor 300, then nitrogen source pollutants are removed through the primary denitrification reaction tank 400 and the primary nitrification reaction tank 500, then the sedimentation tank is used for sedimentation, the residual nitrogen source pollutants are converted into nitrogen through the shortcut nitrification-denitrification device 700, finally, secondary sedimentation is carried out, the treated clear water is discharged through the external drainage water tank 800, the whole sewage treatment process flow is simple, the construction cost is low, secondary pollution is avoided, pollutants such as COD, BOD, TP, ammonium nitrogen, nitrate nitrogen, nitrite nitrogen and SS in sewage can be effectively removed, the sewage treatment efficiency is high, and the treatment effect is good.

The system is provided with a PLC control system 900 for controlling the sewage treatment process, the sewage parameters of all links are monitored in real time through the PLC control system 900, automatic detection of sewage treatment and automatic addition of microorganisms and various medicines in automatic proportioning are realized, the automation degree is high, more or less medicines cannot be added, the treatment effect is good, and energy conservation and environmental protection are facilitated.

Example 1: the high-efficiency regulating reservoir is shown in figures 2 and 3, and is a structural schematic diagram of the regulating reservoir and an aeration device of the invention.

The regulating reservoir 100 comprises a first regulating chamber 110 and a second regulating chamber 120 which are communicated through an overflow valve, and further comprises a dosing device 130 communicated with the first regulating chamber 110 and an aeration device 140 arranged in the first regulating chamber 110, wherein the side edge of the first regulating chamber 110 is provided with a water inlet 111 and a gas inlet 112, the top of the first regulating chamber 110 is provided with a water outlet 113 and a gas outlet 114, and the aeration device 140 is arranged at the bottom and the side wall of the first regulating chamber 110. The equalizing basin 100 is provided with a first equalizing chamber 110 and a second equalizing chamber 120, when the first equalizing chamber 110 is full of water due to the large sewage inflow, redundant sewage enters the second equalizing chamber 120 for temporary storage, when the sewage inflow is too small, the sewage in the second equalizing chamber 120 flows into the first equalizing basin 100 through an overflow valve, and then enters the coagulation sedimentation tank 200, and through the setting of the second equalizing chamber 120, the sewage amount entering a subsequent treatment unit cannot be suddenly too large or too small, so that excessive load and impact cannot be caused to the operation of the subsequent coagulation sedimentation tank 200, thereby being beneficial to maintaining the normal operation of the whole sewage treatment system, further being beneficial to improving the sewage treatment efficiency and improving the treatment effect.

The chemical adding device 130 of the regulating reservoir 100 is filled with a microorganism compound preparation, and the microorganism compound preparation comprises pediococcus acidilactici, pediococcus pentosaceus, leuconostoc mesenteroides, lactobacillus plantarum, bacillus amyloliquefaciens, bacillus subtilis, lactobacillus acidophilus, powdery pichia pastoris and light and bacteria. Wherein the Pediococcus acidilactici is Pediococcus and Pediococcus acidilactici strain, and has the functions of producing acid, regulating gastrointestinal tract flora and maintaining intestinal tract microecological balance. The bacteriocin of Pediococcus acidilactici can inhibit the growth of microorganisms such as Lactobacillus, Leuconostoc, Staphylococcus aureus, Clostridium perfringens, Pseudomonas putida, and Listeria monocytogenes. Has protease sensitive and heat stable effects. Bacteriocins produced by Pediococcus pentosaceus inhibit gram-positive pathogenic bacteria such as Bacillus cereus, Clostridium perfringens, Staphylococcus aureus, and Listeria monocytogenes. Leuconostoc mesenteroides can ferment saccharides to generate a plurality of acids and alcohols, and has high acid production capacity, oxidation resistance, pathogenic bacteria antagonism and other capacities. Lactobacillus plantarum is a kind of lactic acid bacteria that produces characteristic lactobacillin during reproduction, a biological type preservative; has the functions of purifying water quality, decomposing organic matters, deodorizing, degrading ammonia nitrogen, nitrite and other harmful matters, maintaining smooth bathing phase and bacterial phase, lowering pH value of stable water body, etc. Bacillus amyloliquefaciens can produce various antibacterial substances, including polypeptides, lipopeptides, antibacterial proteins and the like. Wherein the bacteriostatic protein can act on the cell wall of the pathogenic fungi to increase the membrane permeability of the pathogenic fungi, thereby inhibiting the growth of the pathogenic fungi. Active substances such as subtilin, polymyxin, nystatin, gramicidin and the like generated in the growth process of bacillus subtilis have obvious inhibiting effect on pathogenic bacteria or conditional pathogenic bacteria of endogenous infection. Can be applied to municipal administration and breeding sewage treatment, industrial circulating water treatment, treatment of septic tanks, septic tanks and the like, treatment of livestock breeding animal waste and odor, a fecal treatment system, treatment of garbage, manure pits, septic tanks and the like. Lactobacillus acidophilus has antagonistic effect on pathogenic microorganisms, and can secrete antibiotic substances (acidophilic lactocin (acidophilolin), acidophilic colin (acidophilophilin), and lactein (1 aerocidin)) for antagonizing intestinal pathogenic bacteria. On the one hand, the pichia farinosa can effectively decompose various carbohydrates, sugar, starch and various protein amino acids and provide nutrient substances required by proliferation for other effective microorganisms. In the second aspect, the yeast can secrete various enzymes, such as cellulase, hemicellulase, xylanase, amylase, pectinase, ligninase and the like, and can degrade organic substances of pollutants more effectively. In the third aspect, under the condition of carbon source supply, the pichia pastoris powder can carry out nitration reaction to decompose ammonia nitrogen into nitrate, thereby achieving the purposes of ammonia nitrogen degradation and deodorization. Light and bacteria, under anaerobic conditions, photosynthetic bacteria hydrolyze through extracellular protease to convert organic nitrogen in sewage into amino acid, then ammonia nitrogen is generated through deamination, and the generated ammonia nitrogen and the original ammonia nitrogen in the sewage are assimilated into photosynthetic bacteria for bacterial strain growth and propagation. Meanwhile, the photosynthetic bacteria with denitrification activity rely on nitrate reductase, nitrite reductase, nitric oxide reductase and nitrous oxide reductase, nitrate or nitrite in sewage is taken as a final electron acceptor, and external simple organic matters (such as acetic acid, amino acid, saccharides and the like) are taken as hydrogen donors to carry out denitrification. The denitrification is divided into assimilation and dissimilation, under the assimilation, nitrate and nitrite are converted into ammonia nitrogen and can be assimilated and utilized by bacteria, under the dissimilation, the nitrate and nitrite are reduced into gaseous nitrogen and discharged out of a water body, and the dissimilation is a main way for removing nitrogen. Therefore, various organic compounds and organic pollutants in the aquaculture sewage can be oxidized or/and decomposed through the action of microorganisms, and the sewage treatment effect and the sewage treatment efficiency are further improved. In the second aspect, the various bacteria in the active microorganism combined biological preparation take organic substances in pollutants as food, the bacteria can be gradually reduced along with the reduction of the pollutants after the sewage is purified, and the bacteria can die due to the lack of food supply when the pollutants are completely removed, so that the invention can completely remove various pollutants, has good treatment effect and can not cause secondary pollution. In the third aspect, under the action of the PLC control system 900, various parameters of the sewage entering the equalizing tank 100 are automatically detected, so that the addition of microorganisms is automatically calculated according to the follow-up parameters, resource waste is not caused, and the sewage treatment efficiency is high.

The aeration device 140 comprises a plurality of transverse aeration pipes 141 and a plurality of vertical aeration pipes 142, the transverse aeration pipes 141 and the vertical aeration pipes 142 are arranged in a crossed manner to form a grid shape, and a plurality of aeration holes 143 are uniformly formed in the transverse aeration pipes 141 and the vertical aeration pipes 142; aeration equipment 140's setting has improved the dissolved oxygen volume in the sewage for sewage can carry out abundant reaction with the microorganism, and the stirring that promotes sewage that simultaneously can be better mixes, makes sewage quality of water more even unanimous, and it is effectual to adjust, is favorable to improving follow-up sewage treatment efficiency. Under the action of the PLC control system 900, the aeration amount of the aeration device 140 can be adjusted according to the water quality condition, so that pollutants can be better decomposed, and the water quality can be better adjusted.

The air outlet 114 is provided with an exhaust pipe 150, the top of the exhaust pipe 150 is provided with an unpowered ventilator 160, and an adsorbing material for adsorbing pollutants is arranged inside the exhaust pipe 150. Through the setting of blast pipe 150, can in time with the gaseous discharge that produces in the sewage treatment process, prevent that the gaseous pressure is too big to cause the explosion in equalizing basin 100, the setting of adsorbing material can the odor in the active absorption gas, plays the deodorization function, prevents that the odor from causing secondary pollution, has further improved the sewage treatment effect.

Example 2: the coagulating sedimentation tank, as shown in fig. 4 and 5, is a schematic structural diagram of the coagulating sedimentation tank and a schematic structural diagram of a wall body with holes.

The coagulating sedimentation tank 200 comprises a stirring sedimentation unit 210 and a filtering sedimentation unit 220, wherein the upper part of the stirring sedimentation unit 210 is provided with a water inlet 230, and the upper part of the filtering sedimentation unit 220 is provided with a water outlet 240; the filtering and settling unit 220 is communicated with the stirring and settling unit 210 through a wall body 250 with a hole, and the bottom parts of the stirring and settling unit 210 and the filtering and settling unit 220 are respectively provided with a sewage discharge pipeline 260 connected with a mud storage pool; a plurality of stirring and precipitating units 210 are arranged, and every two adjacent stirring and precipitating units are communicated with each other; the stirring and precipitating unit 210 comprises a stirring and precipitating chamber 211, a motor 212 arranged at the top of the stirring and precipitating chamber 211, a stirring shaft 213 connected to an output shaft of the motor 212, and a plurality of stirring blades 214 arranged on the stirring shaft 213, and further comprises a dosing funnel 215 arranged at the top of the stirring and precipitating chamber 211 and used for adding a flocculating agent, wherein the stirring shaft 213 penetrates through the dosing funnel 215 and extends into the stirring and precipitating chamber 211.

The number of the stirring precipitation units 210 is three, the first stirring precipitation unit 210 is communicated with the lower part of the second stirring precipitation unit 210, the second stirring precipitation unit 210 is communicated with the upper part of the third stirring precipitation unit 210, and the third stirring precipitation unit 210 is communicated with the lower part of the filtering precipitation unit 220 through a perforated wall 250. After the sewage enters the first stirring and precipitating unit 210, the sewage is stirred and precipitated, particulate matters in the sewage are precipitated for the first time, cleaner sewage after the first precipitation enters the second stirring and precipitating unit 210 through the lower part, the particulate matters in the sewage are precipitated for the second time through the stirring and precipitation, cleaner sewage after the second precipitation enters the second stirring and precipitating unit 210 through the upper part, the particulate matters and impurities in the treated sewage are basically and completely removed through the stirring and precipitation, but a small part of particulate matters are not removed completely, and the treated sewage enters the filtering and precipitating unit 220 to further remove smaller suspended matters and impurities therein. Through multi-stage treatment, thoroughly remove particulate matter impurity such as the suspended solid in the sewage, deposit efficiently, SS can reach the national standard requirement in the delivery port 240 discharged aquatic.

Stirring vane 214 in first stirring precipitation unit 210 increases from last length down in proper order, can produce from last vortex down, and the suspended solid in the sewage can be fast and flocculating agent flocculation and precipitation on the one hand, and on the other hand, under the vortex effect, the clear water can be quick the lower part through first stirring precipitation unit 210 enter into second stirring precipitation unit 210. The arrangement of the stirring blades 214 in the second stirring precipitation unit 210 and the third stirring precipitation unit 210 can also allow the clean water to rapidly flow into the next treatment unit. Through the setting of stirring vane 214 length, further improved the treatment effeciency of sewage, improved the treatment effect.

The filtering and settling unit 220 comprises a filtering and settling chamber 221, an inclined plate area 223 which is positioned in the middle of the filtering and settling chamber 221 and supported by a support frame 222, and a water collecting tank 225 which is positioned at the upper part of the filtering and settling chamber 221 and supported by a support angle steel 224; the water collection tank 225 is in communication with the water outlet 240. When the sewage flows to the sloping plate area 223, suspended matters in the sewage collide with the sloping plate and then are separated from the water, the suspended matters fall to the sludge area at the bottom due to the action of gravity, the clear water continuously flows, and when the clear water is gathered in the water collecting tank 225, the liquid level of the water collecting tank 225 is higher than the water outlet 240, the clear water is discharged through the water outlet 240. Suspended matters in the sewage are further removed through the inclined plate area 223, and clear water is stored in the water collecting tank 225 and is discharged through the water outlet 240, so that the sewage treatment efficiency is further improved, and the treatment effect is improved.

The filtering and settling unit 220 further comprises a filtering cloth 226 arranged on the supporting angle steel 224, the filtering cloth 226 and the sloping plate area 223 are opposite in direction, the filtering cloth 226 is located above the sloping plate area 223, when clean water gradually accumulates to the filtering cloth 226, the filtering cloth 226 filters impurities in the clean water again, smaller particle impurities in the water are removed, the sewage treatment efficiency is further improved, and the sewage treatment effect is improved.

The perforated wall 250 is positioned below the inclined plate area 223, perforations through which liquid can flow but solids cannot pass are uniformly formed in the perforated wall 250, and the perforated wall 250 has the functions of filtration, water distribution, permeation and the like, so that the sewage treatment efficiency is further improved, and the treatment effect is improved.

In the invention, sewage with solid impurities enters the stirring and precipitating unit 210 through the water inlet 230, the sewage is stirred through the stirring and precipitating unit 210 firstly to separate solid and liquid in the sewage, then the sewage is precipitated for the first time to realize the first separation of solid and liquid, the sewage after the first precipitation enters the filtering and precipitating tank 200 through the porous wall 250 to filter and separate other fine impurities in the sewage, finally, clear water is discharged through the water outlet 240, and sludge at the bottoms of the stirring and precipitating unit 210 and the filtering and precipitating unit 220 enters the sludge storage tank through the sewage discharge pipeline 260 to realize the precipitation of particulate impurities in the sewage. On one hand, the invention has high precipitation efficiency, and SS in water discharged from the water outlet 240 can meet the national standard requirement. In the second aspect, the stirring and precipitating unit 210 has a plurality of units, and two adjacent units are communicated with each other, so that stirring and precipitation for a plurality of times are realized, and the precipitation efficiency is further improved. Third aspect, stirring precipitation unit 210 is including stirring precipitation chamber 211, install in the motor 212 at stirring precipitation chamber 211 top, connect in the (mixing) shaft 213 of motor 212 output shaft, install a plurality of stirring vane 214 on (mixing) shaft 213, still offer the medicine funnel 215 that is used for adding the flocculating agent including seting up at stirring precipitation chamber 211 top, (mixing) shaft 213 passes and adds medicine funnel 215 and stretches into inside stirring precipitation chamber 211, add the flocculating agent in the sewage of stirring precipitation chamber 211 through adding medicine funnel 215, stirring vane 214 stirs sewage, make the particulate matter in the sewage can be fast comprehensive and the flocculating agent contact, thereby impurity such as particulate matter in the better sediment sewage, further improved precipitation efficiency.

The working principle of the invention is as follows:

at first, take the sewage of suspended particles impurity to enter into stirring precipitation unit 210 through water inlet 230, stirring vane 214 in first stirring precipitation unit 210 increases from last length down in proper order, can produce from last vortex down, and the suspended solid in the sewage can be fast with flocculating agent flocculation and precipitation, and simultaneously under the vortex effect, the clear water can be quick the lower part through first stirring precipitation unit 210 enter into second stirring precipitation unit 210. Then, stirring vane 214 in second stirring precipitation unit 210 reduces from last length down in proper order, can produce from the supreme vortex down, suspended solid in the sewage can be fast and flocculating agent flocculation and precipitation, simultaneously under the vortex effect, the water after the processing gets into third stirring precipitation unit 210 fast, stirring vane 214 increases from last length down in proper order, can produce from last vortex down, suspended solid in the sewage can be fast and flocculating agent flocculation and precipitation, simultaneously under the vortex effect, sewage can get into filtration precipitation unit 220 through foraminiferous wall body 250 fast, foraminiferous wall body 250 plays the filtration, functions such as water distribution and infiltration. After the sewage enters the filtering and settling unit 220, when the sewage flows to the sloping plate area 223, suspended matters in the sewage collide with the sloping plate and then separate from the water, the suspended matters fall to the sludge area at the bottom due to the action of gravity, the clear water continuously flows and goes out smaller impurities therein again when flowing through the filter cloth 226, and finally, when the clear water is fully gathered in the water collecting tank 225, the liquid level of the water collecting tank 225 is higher than the water outlet 240, the clear water is discharged through the water outlet 240.

Example 3: the UASB reactor 300 is a schematic structural view of the UASB reactor of the present invention, as shown in fig. 6.

The high-efficiency UASB reactor 300 for the sewage treatment of the pig farm comprises a reaction chamber 310, a water inlet pipe 320, a mounting bracket 330a, a water distributor 330b, a sludge reaction zone 340, a suspension zone 350, a three-phase separator 360, an upper exhaust pipe 370a, a drain pipe 370d and a sludge discharge pipe 370c, wherein one end of the water inlet pipe 320 extends into the bottom of the reaction chamber 310, the mounting bracket 330a is vertically arranged at the bottom of the reaction type, the water distributor 330b is mounted at the top of the mounting bracket 330a, the sludge reaction zone 340 is positioned below the water distributor 330b in the reaction chamber 310, the suspension zone 350 is positioned above the water distributor 330b in the reaction chamber 310 and is internally provided with granular fillers, the three-phase separator 360 is mounted at the top of the reaction chamber 310, the upper exhaust; the water distributor 330b is in a truncated cone shape with a small top and a large bottom, a reflecting plate 330c for reflecting sewage is arranged below the water distributor 330b, and the reflecting plate 330c is installed on the installation support 330 a.

The both sides of suspension district 350 top still are equipped with the baffle 380 that the slope of a plurality of groups set up, baffle 380 from the top down length increases in proper order, and the effect of water conservancy diversion is played to the solid in the sewage to the setting of a plurality of baffle 380, and the collision through solid and baffle 380 comes, further smashes solid particle to accelerate sewage treatment efficiency.

The included angle of baffle 380 and the side of reaction chamber 310 is 50 degrees, the included angle of baffle 380 and three separators 360 is 90 degrees, the sludge at the three-phase separator falls onto baffle 380 vertically, the impact of baffle 380 to sludge is great at this moment, and further solid particles are crushed, so that the sewage treatment efficiency is accelerated.

A lower exhaust pipe 370b is further disposed at a position of the side of the reaction chamber 310 below the three separators 360, so that the biogas separated by the baffle 380 can be discharged from the reaction chamber 310 in time, thereby further improving the sewage treatment efficiency.

The reaction chamber 310 is also provided with an aeration device 390a and an air inlet pipe 390b in the sludge reaction area 340, inert gas can be filled into the reaction chamber 310 through the air inlet pipe 390b, when the solid concentration in the reaction chamber 310 is too high, solid particles are fully contacted with microorganisms in the sludge reaction area 340 through aeration, the oxidative decomposition of the microorganisms is accelerated, the sewage treatment efficiency and treatment effect are further improved, and the quality of the effluent water is improved.

The one end that inlet tube 320 is located the outside of reacting chamber 310 is connected with a sewage elevator pump 310a, be equipped with an internal circulation pump 310b in the sludge reacting chamber 310, handle in supreme pump income reacting chamber 310 from down sewage through sewage elevator pump 310a, through internal circulation pump 310b, start when the water quality is undulant greatly, the upwelling speed of sewage has been improved, the bulk strength of sludge reaction district 340 has been increased, the treatment effeciency of mass transfer speed and reactor 300 has been improved, further sewage treatment efficiency has been improved, the sewage treatment effect has been improved.

On one hand, sewage enters the reaction chamber 310 through the water inlet pipe 320, water distribution is uniformly achieved after passing through the water distributor 330b, the uniformly mixed water rises to the suspension area 350 to treat organic pollutants in the sewage, then the sewage rises to the three separators 360 to achieve solid-liquid-gas separation, biogas is discharged through the exhaust pipe, clear water is discharged through the drain pipe 370d, solid particles in the sewage fall to the suspension area 350 to be further decomposed, then the sewage enters the sludge reaction area 340, the particle pollutants are gradually decomposed by microorganism anaerobic fermentation, and the steps are sequentially repeated until the pollutants in the sewage are all converted into water and biogas. In the second aspect, the aeration device 390a is disposed in the sludge reaction zone 340, which is beneficial to fully mixing the sewage and the anaerobic sludge, so that the solid organic matters in the sewage can be fully decomposed, and the sewage treatment effect is further improved. In the third aspect, the suspension zone 350 is internally provided with granular fillers, which not only prolongs the retention time of sewage, but also is beneficial to biofilm formation and improves the biological purification efficiency. In the fourth aspect, the water distributor 330b is in a truncated cone shape with a small top and a large bottom, a reflecting plate 330c for reflecting sewage is arranged below the water distributor 330b, the reflecting plate 330c is mounted on the mounting bracket 330a, the contact area between the water distributor 330b and the sewage is large, the water distribution area is large, the water distribution effect is good, and the reflecting plate 330c is arranged, so that when water flows down in the water distributor 330b, the water flows are uniformly dispersed around due to the reflecting plate 330c, the water distribution efficiency is improved, and the improvement of the sewage treatment efficiency is further facilitated.

The working principle of the invention is as follows:

firstly, under the action of the external sewage lift pump 310a, sewage enters the reaction chamber 310 from bottom to top, and then passes through the water distributor 330b to realize uniform water distribution, and when water flows down in the water distributor 330b, the water flows are uniformly dispersed around due to the reflecting plate 330c, so that the water distribution efficiency is improved. The sewage and the biogas continuously enter the suspension area 350 and contact with the particles in the suspension area 350, so that the retention time of the sewage is prolonged, and biofilm formation is facilitated; the sewage, sludge and biogas rise to a three-phase separator where solid-liquid-gas separation is performed, the separated liquid is discharged through a drain pipe 370d, the biogas is discharged through an upper drain pipe 370a and a lower drain pipe 370b, the sludge flows back to the sludge reactor 300, and is anaerobically decomposed into water and biogas, which are sequentially reciprocated until the pollutants in the sewage are completely converted into water and biogas.

Example 4: a short-cut nitrification-denitrification apparatus, as shown in FIG. 7, is a schematic structural diagram of the short-cut nitrification-denitrification apparatus of the present invention.

The efficient short-cut nitrification-denitrification device 700 for treating the sewage in the pig farm comprises a nitrification reaction area 7200 and an anaerobic ammonia oxidation area 7100; the nitrification reaction zone 7200 comprises a nitrification reaction tank 7210, the upper part of the nitrification reaction tank 7210 is a nitrification reaction stirring zone 7220, the lower part of the nitrification reaction tank 7210 is a nitrification reaction filtering zone 7230, and a nitrification reaction stirring device 7240 and a nitrifying bacteria filler 7250 are arranged in the nitrification reaction stirring zone 7220; the upper part of the nitrification reaction tank body 7210 is provided with a nitrification reaction water inlet 7221 together with the nitrification reaction stirring area 7220, and the lower part is provided with a nitrification reaction water outlet 7231 together with the nitrification reaction filtering area 7230; the nitrification reaction stirring zone 7220 and the nitrification reaction filtering zone 7230 are separated by a permeable membrane 7260; a nitration aeration device 7270 communicated with an external air source is also arranged in the nitration stirring zone 7220, and a nitration sewage outlet 7280 used for discharging solid pollutants is arranged in the nitration filtering zone 7230.

The anammox zone 7100 comprises an anammox tank body 7110, the upper part of the anammox tank body 7110 is an anammox stirring zone 7111, the lower part is an anammox filtering zone 7112, and an anammox stirring device 7120 and an anammox bacterial filler 7130 are arranged in the anammox stirring zone 7111; an anammox water inlet 7113 which is connected with the anammox stirring area 7111 is arranged at the upper part of the anammox tank body 7110, and an anammox water outlet 7114 which is connected with the anammox filtering area 7112 is arranged at the lower part of the anammox tank body 7110; the anammox agitation zone 7111 and the anammox filtration zone 7112 are separated by a permeable membrane 7117; the anammox filtering zone 7112 is provided with an anammox drain 7118 for discharging solid pollutants; an anammox air outlet 7116 is formed in the top of the anammox stirring area 7111, an anammox air inlet 7115 is formed in the bottom of the anammox stirring area 7111, an anammox aeration device 7140 is arranged in the anammox stirring area 7111, and the anammox aeration device 7140 is communicated with the anammox air inlet 7115 and the anammox air outlet 7116 through a gas transmission pipeline; the PLC control system 900 is electrically connected with the nitrification reaction stirring device 7240, the nitrification reaction aeration device 7270, the anaerobic ammonia oxidation stirring device 7120 and the anaerobic ammonia oxidation aeration device 7140 in the nitrification reaction zone 7200 and the anaerobic ammonia oxidation zone 7100.

On one hand, under the action of the PLC control system 900, nitrogen source pollutants are converted into nitrite through the nitration reaction zone 7200, then the nitrite is directly converted into nitrogen through the anaerobic ammonia oxidation zone 7100 and discharged, the decomposition of the nitrogen source pollutants is realized, and the sewage treatment efficiency is high. In a second aspect, the nitrification reaction zone 7200 includes a nitrification reaction tank 7210, the nitrification reaction tank 7210 has a nitrification reaction stirring zone 7220 at an upper portion thereof and a nitrification reaction filtering zone 7230 at a lower portion thereof, and the nitrification reaction stirring zone 7220 is internally provided with a nitrification reaction stirring device 7240 and a nitrifying bacteria filler 7250; the upper part of the nitrification reaction tank body 7210 is provided with a nitrification reaction water inlet 7221 together with the nitrification reaction stirring area 7220, and the lower part is provided with a nitrification reaction water outlet 7231 together with the nitrification reaction filtering area 7230; the nitrification reaction stirring zone 7220 and the nitrification reaction filtering zone 7230 are separated by a permeable membrane 7260; the nitration stirring zone 7220 is also internally provided with a nitration aeration device 7270 communicated with an external air source, the nitration filtering zone 7230 is provided with a nitration sewage outlet 7280 for discharging solid pollutants, in the nitration zone 7200, under the action of the PLC control system 900, the nitration aeration device 7270 provides oxygen, nitrobacteria convert nitrogen source pollutants into nitrite, after the conversion is completed, the PLC control system 900 controls the nitration aeration device 7270 to stop sign oxygen supply, so as to prevent the nitrite from being oxidized into nitrate, the short-cut nitration treatment efficiency is high, and the treatment effect is good.

In the anammox zone 7100, sewage subjected to nitration reaction enters the anammox tank body 7110 through an anammox water inlet 7113 at the upper part of the anammox tank body 7110, nitrite in the sewage reacts with microorganisms after being stirred and filtered by microorganism fillers in the anammox stirring zone 7111, nitrogen source pollutants are decomposed into nitrogen, the treated sewage enters the anammox filtering zone 7112 through a permeable membrane 7260, impurities such as solid particles in the sewage are precipitated and then discharged through an anammox sewage discharge outlet 7118, and treated clear water is discharged from an anammox water outlet 7114 at the lower part of the anammox tank body 7110. In the anammox process, microorganisms are decomposed into nitrogen through nitrite, the nitrogen is discharged from the upper part of the anammox tank body 7110 through an anammox gas outlet 7116, enters an anammox gas inlet 7115 through a gas pipeline, enters an anammox aeration device 7140, and is used for aerating pollution in the anammox stirring area 7111, so that the flowability of sewage is improved, the contact area between the sewage and microorganism fillers is increased, meanwhile, the anammox stirring device 7120 is used for stirring the sewage in the anammox stirring area 7111, so that the flowability of the sewage is further improved, and in the whole anammox process, all parameters in the anammox tank body 7110 are monitored in real time through a PLC (programmable logic controller) control system 900. On one hand, the system adopts PLC control, has high automation degree, adjusts various parameters in the anaerobic ammonia oxidation tank body 7110 by monitoring various parameters in real time, ensures that the anaerobic ammonia oxidation reaction is in a high-efficiency proceeding state, and has high sewage treatment efficiency and good effluent quality. In the second aspect, the anaerobic ammonia oxidation aeration device 7140 and the anaerobic ammonia oxidation stirring device 7120 are adopted to simultaneously improve the fluidity of the sewage, so that the sewage can be fully contacted with the microbial filler, the anaerobic ammonia oxidation treatment effect of the sewage is ensured, the sewage treatment efficiency is further high, and the effluent quality is good. In the third aspect, the gas of the anammox aeration device 7140 is nitrogen generated by anammox, and the anammox cell body 7110 is closed, so that outside air cannot be introduced in the anammox process, dissolved oxygen in sewage cannot be increased, nitrite cannot be oxidized into nitrate, and the problem of hindering the anammox process is solved, the efficient and high-quality anammox reaction in the cell body is further ensured, the sewage treatment efficiency is high, and the effluent quality is good.

The anaerobic ammonia oxidation stirring device 7120 comprises a motor 7121, a stirring shaft 7122 and stirring blades 7123, wherein meshes are distributed on the surface of each stirring blade 7123, catalytic iron 7124 is filled in each stirring blade 7123, and baffles 7125 are arranged at two ends of each stirring blade 7123; the remote control terminal is electrically connected to the motor 7121. According to the dissolved oxygen data acquired by the remote control terminal in real time, the output power of the motor 7121 is adjusted to change the stirring speed, so that the whole anaerobic ammonia oxidation system is efficiently operated. Meanwhile, the catalytic iron 7124 in the stirring blade 7123 is contacted with the anammox bacteria and the sewage in the stirring process, so that the catalytic effect is achieved, the anammox efficiency is improved, and the sewage treatment efficiency is further improved.

The stirring blades 7123 are of a structure that the length is gradually shortened from top to bottom and the length is longer from top to bottom, so that a vortex can be generated in the stirring process, the contact between sewage and anammox bacteria is increased, the anammox speed is increased, and the sewage treatment efficiency is further improved.

Transparent observation windows are all opened on the nitrification reaction tank 7210 and the anaerobic ammonia oxidation tank 7110, the inside nitrification and denitrification are convenient to observe, the use is convenient, and the outside of the nitrification reaction tank 7210 and the anaerobic ammonia oxidation tank 7110 are all provided with heat-insulating layers, so that the system can maintain proper temperature, the activity of nitrobacteria and anaerobic ammonia oxidizing bacteria is ensured, the nitrification reaction and the anaerobic ammonia oxidation speed are accelerated, and the sewage treatment efficiency is further improved.

The nitration reaction zone 7200 is also connected with an ultrasonic generator 7300, the ultrasonic generator 7300 intermittently sends out ultrasonic waves under the control of the PLC control system 900; the ultrasonic generator 7300 generates ultrasonic sound with a sound energy density of 0.7W/mL and is a periodic ultrasonic wave. The short-cut nitrification can be promoted by the periodic ultrasonic wave of 0.7W/mL, nitrite can be accumulated, the subsequent anaerobic ammonia oxidation can be started conveniently, the activity of the nitrite oxidase can be inhibited by strengthening the activity of the ammonia monooxygenase by the ultrasonic wave, the short-cut nitrification can be promoted, the nitrate can be inhibited from being converted into the nitrite, and the sewage treatment efficiency can be further improved.

Example 5: the PLC control system, as shown in fig. 8, is a control schematic diagram of the present invention.

The PLC control system 900 comprises an electromagnetic flow meter 910 respectively arranged at the water inlet and the water outlet of the regulating tank 100, the coagulating sedimentation tank 200, the UASB reactor 300, the primary denitrification reaction tank 400, the primary nitrification reaction tank 500, the primary sedimentation tank 600a, the shortcut nitrification-denitrification device 700, a level meter 920, a thermometer 930, a PH meter 940, an ORP meter 950, a COD analyzer 960A, BOD analyzer 960B, TP analyzer 960C, an ammonium nitrogen analyzer 960d, a nitrate nitrogen analyzer 960e, a nitrite nitrogen analyzer 960f, an SS analyzer 960G in the regulating tank 100, the coagulating sedimentation tank 200, the UASB reactor 300, the primary denitrification reaction tank 400, the primary nitrification reaction tank 500, the primary sedimentation tank 600a, the shortcut nitrification-denitrification device 700, and the secondary sedimentation tank 600b, and a microbial agent 970a arranged at the outlet of the dosing device 130 of the regulating tank, the anaerobic ammonium oxidation water inlet is arranged at the anaerobic ammonium oxidation water inlet; the system also comprises a remote control terminal 980 which is connected with the electromagnetic flow meter 910, the liquid level meter 920, the thermometer 930, the PH meter 940, the ORP meter 950, the COD analyzer 960A, BOD analyzer 960B, TP analyzer 960C, the ammonium nitrogen analyzer 960d, the nitrate nitrogen analyzer 960e, the nitrite nitrogen analyzer 960f, the SS analyzer 960G, the acetic acid adding metering pump 970b, the sodium acetate adding metering pump 970C, the ammonium bicarbonate adding metering pump 970d and the microbial agent metering pump 970 a.

The method comprises the steps that indexes such as inflow, outflow, PH, temperature, dissolved oxygen, ORP value, nitrate nitrogen concentration, nitrite nitrogen concentration, ammonium nitrogen concentration and COD concentration are monitored in real time through an electromagnetic flow meter 910, a liquid level meter 920, a thermometer 930, a PH meter 940, an ORP meter 950, a COD analyzer 960A, BOD, an analyzer 960B, TP, an analyzer 960C, an ammonium nitrogen analyzer 960d, a nitrate nitrogen analyzer 960e, a nitrite nitrogen analyzer 960f, an SS analyzer 960G and the like, the inflow, the outflow, the PH, the temperature, the dissolved oxygen, the ORP value, the nitrate nitrogen concentration, the nitrite nitrogen concentration, the ammonium nitrogen concentration and the COD concentration are fed back to a remote control terminal 980 in time, the remote control terminal 980 controls the start and stop of the nitrification reaction aeration device according to the indexes such as ORP value, the nitrate nitrogen concentration, the nitrite nitrogen concentration and the ammonium nitrogen concentration in a nitrification reaction zone 200, and prevents nitrite from being oxidized into nitrate, and simultaneously, the remote, Indexes such as nitrite nitrogen concentration, ammonium nitrogen concentration and COD concentration, an acetic acid adding metering pump 970b, a sodium acetate adding metering pump 970C, an ammonium bicarbonate adding metering pump 970d and a microbial agent metering pump 970a are controlled to work so as to ensure that pollutants in the regulating tank 100 are decomposed, indexes such as C/N and nitrite concentration of water in the anaerobic ammonia oxidation tank body meet requirements of anaerobic ammonia oxidation, the anaerobic ammonia oxidation can be rapidly and efficiently carried out, nitrite is effectively started to be converted into nitrogen, the generation of nitrate is reduced, the sewage treatment efficiency is high, and the automation degree is high.

The remote control terminal 980 maintains the C/N of the sewage entering the anaerobic ammonia oxidation zone to be 5 by controlling the addition of acetic acid and sodium acetate. The anaerobic ammonium oxidation bacteria are heterotrophic facultative anaerobes, organic matters are consumed by cell synthesis growth of the anaerobic ammonium oxidation bacteria, when the C/N value is low, the available organic matters are few, the synthesis of denitrifying bacteria is blocked, and the denitrifying effect is poor, so a carbon source is required to be added to improve the C/N value, when the C/N value is high, the carbon source is excessively added, the carbon source is wasted, the COD (chemical oxygen demand) concentration of effluent exceeds the standard, when the C/N value is 5, the microorganism concentration is high, the denitrifying effect is good, the removal rate of TN (total nitrogen) can reach 89%, and the effluent quality is good.

The working principle of the invention is as follows:

firstly, sewage enters the adjusting tank 100 through the water inlet 111, the adjusting tank 100 is provided with the first adjusting chamber 110 and the second adjusting chamber 120, when the sewage inflow is large, the first adjusting chamber 110 is full of water, redundant sewage enters the second adjusting chamber 120 for temporary storage, when the sewage inflow is too small, the sewage in the second adjusting chamber 120 flows into the first adjusting tank 100 through the overflow valve and then enters the coagulation sedimentation tank 200, through the arrangement of the second adjusting chamber 120, the sewage amount entering a subsequent treatment unit cannot be suddenly too large or too small, and excessive load and impact cannot be caused to the operation of the subsequent coagulation sedimentation tank 200. Under the action of the aeration device 140, the microbial agent added by the agent adding device 130 in the adjusting tank 100 can oxidize or/and decompose various organic compounds and organic pollutants in the aquaculture sewage, so as to realize the preliminary adjustment of the sewage quality and the water yield.

Then, the sewage in the adjusting tank 100 is discharged through the gas outlet 114, enters the coagulation sedimentation tank 200 through the water inlet 230 after passing through the water pipeline, enters the stirring sedimentation unit 210 first, the sewage is stirred through the stirring sedimentation unit 210 first, so that the solid and the liquid in the sewage are separated, then the first sedimentation is performed, the first separation of the solid and the liquid is realized, the sewage after the first sedimentation enters the filtration sedimentation tank 200 through the porous wall 250, other fine impurities in the sewage are filtered and separated again, the final clear water is discharged through the water outlet 240, the sludge at the bottoms of the stirring sedimentation unit 210 and the filtration sedimentation unit 220 enters the sludge storage tank through the sewage discharge pipeline 260, and the sedimentation of the impurities in the sewage is realized.

Then, the water discharged from the water outlet 240 enters the UASB reactor 300 through the water inlet pipe 320, and is distributed uniformly through the water distributor 330b, the uniformly mixed water rises to the suspension region 350, organic pollutants in the sewage are treated, the sewage rises to the three separators 360, solid-liquid-gas separation of the sewage is realized, biogas is discharged through the exhaust pipe, clear water is discharged through the drain pipe 370d, solid particles in the sewage descend to the suspension region 350 for further decomposition, and then the sewage enters the sludge reaction region 340, the particle pollutants are gradually decomposed by the anaerobic fermentation of microorganisms, and the steps are repeated in sequence until the pollutants in the sewage are all converted into water and biogas.

Then, the water treated by the UASB reactor 300 is discharged from the drain pipe 370d into the primary denitrification reaction tank 400, the primary nitrification reaction tank 500, the primary sedimentation tank 600a, the shortcut nitrification-denitrification device 700, the secondary sedimentation tank 600b, and finally into the external drainage tank 800.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. High-efficient sewage treatment system of breeding, its characterized in that: the system comprises a regulating tank, a coagulating sedimentation tank, a UASB reactor, a primary denitrification reaction tank, a primary nitrification reaction tank, a primary sedimentation tank, a shortcut nitrification-denitrification device, a secondary sedimentation tank and an external drainage tank which are sequentially connected through a water conveying pipeline, and also comprises a PLC control system for controlling the sewage treatment process; the regulating reservoir comprises a first regulating chamber and a second regulating chamber which are communicated through an overflow valve, and also comprises a dosing device communicated with the first regulating chamber and an aeration device arranged in the first regulating chamber, wherein the side edge of the first regulating chamber is provided with a water inlet and an air inlet, the top of the first regulating chamber is provided with a water outlet and an air outlet, and the aeration device is arranged at the bottom and the side wall of the first regulating chamber; the interior of the dosing device is filled with a microbial compound preparation, and the microbial compound preparation comprises pediococcus acidilactici, pediococcus pentosaceus, leuconostoc mesenteroides, lactobacillus plantarum, bacillus amyloliquefaciens, bacillus subtilis, lactobacillus acidophilus, powdery pichia pastoris and light and bacteria.

2. The high efficiency aquaculture sewage treatment system of claim 1, wherein: the aeration device comprises a plurality of transverse aeration pipes and a plurality of vertical aeration pipes, the transverse aeration pipes and the vertical aeration pipes are arranged in a crossed mode to form a grid shape, and a plurality of aeration holes are uniformly formed in the transverse aeration pipes and the vertical aeration pipes; the gas outlet is provided with an exhaust pipe, the top of the exhaust pipe is provided with an unpowered ventilator, and an adsorbing material for adsorbing pollutants is arranged inside the exhaust pipe.

3. The high efficiency aquaculture sewage treatment system of claim 2, wherein: the coagulating sedimentation tank comprises a stirring sedimentation unit and a filtering sedimentation unit, wherein a water inlet is formed in the upper part of the stirring sedimentation unit, and a water outlet is formed in the upper part of the filtering sedimentation unit; the filtering and precipitating unit is communicated with the stirring and precipitating unit through a wall body with a hole, and the bottoms of the stirring and precipitating unit and the filtering and precipitating unit are respectively provided with a sewage discharge pipeline connected with a sludge storage tank; a plurality of stirring and precipitating units are arranged, and two adjacent stirring and precipitating units are communicated with each other; the stirring precipitation unit comprises a stirring precipitation chamber, a motor arranged at the top of the stirring precipitation chamber, a stirring shaft connected to an output shaft of the motor, and a plurality of stirring blades arranged on the stirring shaft, and further comprises a dosing funnel arranged at the top of the stirring precipitation chamber and used for adding a flocculating agent, wherein the stirring shaft penetrates through the dosing funnel and extends into the stirring precipitation chamber.

4. The high efficiency aquaculture sewage treatment system of claim 3, wherein: the three stirring and precipitating units are provided, the lower parts of the first stirring and precipitating unit and the second stirring and precipitating unit are communicated, the upper parts of the second stirring and precipitating unit and the third stirring and precipitating unit are communicated, and the lower parts of the third stirring and precipitating unit and the filtering and precipitating unit are communicated through a wall body with holes; the lengths of the stirring blades in the first stirring and precipitating unit are sequentially increased from top to bottom, the lengths of the stirring blades in the second stirring and precipitating unit are sequentially decreased from top to bottom, and the lengths of the stirring blades in the third stirring and precipitating unit are sequentially increased from top to bottom; the filtering and settling unit comprises a filtering and settling chamber, an inclined plate area which is positioned in the middle of the filtering and settling chamber and supported by a support frame, and a water collecting tank which is positioned at the upper part of the filtering and settling chamber and supported by a support angle steel; the water collecting tank is communicated with the water outlet; the filtering and precipitating unit also comprises a filtering cloth arranged on the supporting angle steel, the direction of the filtering cloth is opposite to that of the inclined plate area, and the filtering cloth is positioned above the inclined plate area; the wall body with the holes is positioned below the inclined plate area, and the wall body with the holes is uniformly provided with through holes through which liquid can flow but solids cannot pass.

5. The high efficiency aquaculture sewage treatment system of claim 4, wherein: the UASB reactor comprises a reaction chamber, a water inlet pipe, a mounting bracket, a water distributor, a sludge reaction zone, a suspension zone, a three-phase separator, an upper exhaust pipe, a drain pipe and a sludge discharge pipe, wherein one end of the water inlet pipe extends into the bottom of the reaction chamber; the water distributor is in a round table shape with a small upper part and a big lower part, a reflecting plate used for reflecting sewage is arranged below the water distributor, and the reflecting plate is arranged on the mounting bracket.

6. The high efficiency aquaculture sewage treatment system of claim 5, wherein: a plurality of groups of baffles which are obliquely arranged are arranged on two sides above the suspension area, and the lengths of the baffles are sequentially increased from top to bottom; the included angle between the baffle and the side edge of the reaction chamber is 50 degrees, and the included angle between the baffle and the three separators is 90 degrees; a lower exhaust pipe is also arranged at the position of the side edge of the reaction chamber, which is positioned at the height below the three separators; an aeration device and an air inlet pipeline are also arranged in the sludge reaction zone in the reaction chamber; an internal circulating pump is arranged in the sludge reaction chamber.

7. The high efficiency aquaculture sewage treatment system of claim 6, wherein: the short-cut nitrification-denitrification device comprises a nitrification reaction area and an anaerobic ammonia oxidation area; the nitrification reaction zone comprises a nitrification reaction tank body, the upper part of the nitrification reaction tank body is a nitrification reaction stirring zone, the lower part of the nitrification reaction tank body is a nitrification reaction filtering zone, and a nitrification reaction stirring device and a nitrifying bacteria filler are arranged in the nitrification reaction stirring zone; the upper part of the nitrification reaction tank body is provided with a nitrification reaction water inlet which is connected with the nitrification reaction stirring area, and the lower part of the nitrification reaction tank body is provided with a nitrification reaction water outlet which is connected with the nitrification reaction filtering area; the nitration reaction stirring zone and the nitration reaction filtering zone are separated by a permeable membrane; a nitration aeration device communicated with an external air source is also arranged in the nitration stirring zone, and a nitration sewage outlet for discharging solid pollutants is arranged in the nitration filtering zone; the anaerobic ammonia oxidation region comprises an anaerobic ammonia oxidation tank body, the upper part of the anaerobic ammonia oxidation tank body is an anaerobic ammonia oxidation stirring region, the lower part of the anaerobic ammonia oxidation tank body is an anaerobic ammonia oxidation filtering region, and an anaerobic ammonia oxidation stirring device and anaerobic ammonia oxidation bacteria filler are arranged in the anaerobic ammonia oxidation stirring region; the upper part of the anaerobic ammonia oxidation tank body is provided with an anaerobic ammonia oxidation water inlet together with the anaerobic ammonia oxidation stirring area, and the lower part of the anaerobic ammonia oxidation tank body is provided with an anaerobic ammonia oxidation water outlet together with the anaerobic ammonia oxidation filtering area; the anaerobic ammonia oxidation stirring area and the anaerobic ammonia oxidation filtering area are separated by a permeable membrane; the anaerobic ammonia oxidation filtering area is provided with an anaerobic ammonia oxidation sewage outlet for discharging solid pollutants; the anaerobic ammonia oxidation stirring area is provided with an anaerobic ammonia oxidation air outlet at the top, an anaerobic ammonia oxidation air inlet at the bottom, an anaerobic ammonia oxidation aeration device in the anaerobic ammonia oxidation stirring area, and the anaerobic ammonia oxidation aeration device is communicated with the anaerobic ammonia oxidation air inlet and the anaerobic ammonia oxidation air outlet through a gas transmission pipeline.

8. The high efficiency aquaculture sewage treatment system of claim 7, wherein: the anaerobic ammonia oxidation stirring device comprises a motor, a stirring shaft and stirring blades, wherein meshes are fully distributed on the surfaces of the stirring blades, catalytic iron is filled in the stirring blades, and baffles are arranged at two ends of the stirring blades; transparent observation windows are arranged on the nitrification reaction tank body and the anaerobic ammonia oxidation tank body respectively, and heat preservation layers are arranged outside the nitrification reaction tank body and the anaerobic ammonia oxidation tank body respectively; the nitration reaction zone is also connected with an ultrasonic generator which intermittently sends out ultrasonic waves under the control of a PLC control system; the ultrasonic energy density generated by the ultrasonic generator is 0.7W/mL and is periodic ultrasonic.

9. The high efficiency aquaculture sewage treatment system of claim 8, wherein: the PLC control system comprises electromagnetic flow meters which are respectively arranged at a water inlet and a water outlet of a regulating tank, a coagulating sedimentation tank, a UASB reactor, a primary denitrification reaction tank, a primary nitrification reaction tank, a primary sedimentation tank, a shortcut nitrification-denitrification device and a secondary sedimentation tank, the system comprises a regulating tank, a coagulating sedimentation tank, a UASB reactor, a primary denitrification reaction tank, a primary nitrification reaction tank, a primary sedimentation tank, a shortcut nitrification-denitrification device, a liquid level meter, a thermometer, a PH meter, an ORP meter, a COD analyzer, a BOD analyzer, a TP analyzer, an ammonium nitrogen analyzer, a nitrate nitrogen analyzer, a nitrite nitrogen analyzer and an SS analyzer in the secondary sedimentation tank, and also comprises a microbial agent metering pump arranged at the outlet of a dosing device of the regulating tank, an acetic acid dosing metering pump arranged at an anaerobic ammonia oxidation water inlet, a sodium acetate dosing metering pump and an ammonium bicarbonate dosing metering pump arranged at a nitrification reaction water inlet; the system also comprises a remote control terminal which is connected with the electromagnetic flow meter, the liquid level meter, the thermometer, the PH meter, the ORP meter, the COD analyzer, the BOD analyzer, the TP analyzer, the ammonium nitrogen analyzer, the nitrate nitrogen analyzer, the nitrite nitrogen analyzer, the SS analyzer, the acetic acid feeding metering pump, the sodium acetate feeding metering pump, the ammonium bicarbonate feeding metering pump and the microbial preparation metering pump.

10. The high efficiency aquaculture sewage treatment system of claim 9, wherein: and the remote control terminal maintains the C/N of the sewage flowing through the anaerobic ammonia oxidation water inlet in the stirring area to be 5 by controlling the addition of acetic acid and sodium acetate.