CN210885687U - Livestock and poultry excrement discharge and treatment device reaching standards - Google Patents
Livestock and poultry excrement discharge and treatment device reaching standards Download PDFInfo
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- CN210885687U CN210885687U CN201920573998.2U CN201920573998U CN210885687U CN 210885687 U CN210885687 U CN 210885687U CN 201920573998 U CN201920573998 U CN 201920573998U CN 210885687 U CN210885687 U CN 210885687U
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Abstract
The utility model discloses a livestock and poultry excrement discharge treatment device which comprises ① pretreatment units, including a mixing homogenate pool 1, a pretreatment grid well 2, a pretreatment grid lifting pump 3, a spiral extrusion separator 4, a primary sedimentation pool 5 and a raw sediment poolA pre-reaction regulating tank 6, an ② biochemical treatment unit including an anaerobic baffle reaction tank 7, a hydrolytic acidification tank 8, and an anoxic/aerobic (A/O) tank1、O2) The biological reaction tank, the secondary sedimentation tank, the sludge acidification tank 11, the multifunctional composite biological reaction tank (HBR)12, and the ③ ecological advanced treatment unit comprise an ecological filter bed 13, an aquatic plant pond 14 and a disinfection clean water tank 153The livestock and poultry manure with high N concentration and strict effluent quality requirement adopts a multi-element combination technology of pretreatment, two-stage biochemical treatment and ecological advanced treatment process, and can truly treat the livestock and poultry manure with high pollutant concentration to reach the first-level water quality standard in the national Integrated wastewater discharge Standard (GB 8978-1996).
Description
Technical Field
The utility model belongs to the dirty processing field of beasts and birds excrement further indicates a dirty discharge to reach standard processing apparatus of beasts and birds excrement.
Background
The livestock and poultry breeding manure discharged by the livestock and poultry farm every day is large and concentrated, contains a large amount of pollutants such as COD, BOD, ammonia nitrogen, heavy metals, residual poison, a large amount of pathogens and the like, and can cause serious pollution and harm if the manure is directly discharged without treatment. Firstly to the harm of water, the breed excrement contains a large amount of pathogens and high concentration organic matter, and release nitrogen, phosphorus nutrient element when a large amount of dissolved oxygen in the organic matter decomposition consumption water, aggravate water eutrophication, and a large amount of suspended solids make the water turbid, influence the photosynthesis of aquatic plant, lead to water dissolved oxygen further to reduce, cause the death of aquatic organism a large number. Secondly, the method is harmful to the atmospheric environment, and the livestock and poultry breeding manure can generate a large amount of gases such as methane (CH4), ammonia (NH3), sulfide and the like without effective treatment, thereby influencing and harming the health of feeding personnel and surrounding residents. Thirdly, the manure is harmful to farmlands and crops, contains more nutrients such as nitrogen, phosphorus, potassium and the like, and if the manure is directly, continuously and excessively applied without being treated, the manure can cause adverse effects on the growth of soil and crops, cause full lodging, greediness, delay of the mature period, influence on the production of subsequent crops, even cause crops to die, reduce the yield and the like. A large amount of mineral elements also causes soil hardening. Toxic and harmful heavy metals, antibiotics and the like can cause the safety quality of agricultural products to be not up to the requirement, and even harm the health of people. And fourthly, the excrement with pathogenic microorganisms can become an infection source, so that the infection and the epidemic of animal epidemic diseases are easily caused, and the effective prevention and control of the animal epidemic diseases are seriously influenced.
At present, some livestock and poultry farms only discharge the livestock and poultry are discharged after being subjected to extensive treatment through simple septic tanks, methane tanks or sedimentation tanks and oxidation ponds, and the. The treatment of the livestock and poultry excrement discharge reaching the standard is an urgent problem to be solved.
SUMMERY OF THE UTILITY MODEL
The utility model provides a livestock and poultry excrement discharge treatment device up to standard, through the combined technology and the technology of preprocessing unit + biochemical treatment unit + ecological advanced treatment unit, follow the principle of "minimizing, innoxious, cheaply priced ization, portably, the ecology", the comprehensive consideration, scientific design, reasonable layout make the play water after handling reach the one-level water quality standard in national integrated wastewater discharge standard (GB8978-1996), are superior to the water quality index of "livestock and poultry industry pollutant discharge standard (GB 18596-2001).
In order to realize the aim, the technical scheme provided by the utility model is that the livestock and poultry excrement discharge treatment device reaches the standard and comprises ① pretreatment units including a mixing homogenizing tank, a pretreatment grid well, a pretreatment grid lift pump, a spiral extrusion separator, a primary sedimentation tank and a biological pre-reaction regulating tank, and ② biochemical treatment units including an anaerobic baffle reaction tank, a hydrolysis acidification tank and an anoxic/aerobic (A/O) biochemical treatment unit1、O2) The ecological advanced treatment unit ③ comprises an ecological filter bed, an aquatic plant pond and a disinfection clean water pond.
① the preprocessing unit includes the following:
mixing and homogenizing the slurry in a tank: mix the homogenate pond import and be provided with and mix the homogenate pond inlet pipe, be provided with vertical mixer in the pond, the export is provided with and mixes the homogenate pond discharging pipe.
Pretreatment of the grid well: the net clearance of the middle grid bars in the pretreatment grid well is 30-35 mm, and the installation inclination angle of the middle grid is 75 degrees.
Pretreatment of the grid well lift pump: the pretreatment grid well lift pump is a slurry pump.
A screw extrusion separator: the spiral extrusion separator consists of a belt wheel, a differential mechanism, a bearing seat, an overflow plate, a rotary drum, a housing, an extrusion screw and the like.
Primary sedimentation tank: the primary sedimentation tank is a horizontal flow sedimentation tank, a primary sedimentation tank water inlet pipe is arranged at the front end of the primary sedimentation tank, a primary sedimentation tank water collecting tank is arranged at the upper part of the primary sedimentation tank, a primary sedimentation tank water outlet hole is arranged on the tank wall at the tail end of the tank, and a primary sedimentation tank bottom sludge discharge pipe is arranged at the bottom of the tail end of the tank.
A biological pre-reaction regulating tank: the bottom diagonal of the biological pre-reaction regulating tank is provided with an underwater propeller at the bottom of the biological pre-reaction regulating tank, and braid type fillers (the diameter of a braid of the braid type fillers is 40mm, the space between braids is 100mm, the line spacing is 200mm, the height of a looped pile is 20mm, and the specific surface area is 2000 m) are arranged in the middle of the rear half of the tank2/m3The pool wall at the end of the pool) and the pool is provided with a water outlet pipe of the biological pre-reaction regulating pool. The biological pre-reaction regulating tank and the primary settling tank are combined, the middle part is separated by a partition wall, and the wall is provided with water through holes to keep the water through section.
② the biochemical processing unit includes the following:
anaerobic baffle reaction tank: the anaerobic baffle reaction tank is characterized in that an anaerobic baffle reaction tank water inlet pipe is arranged at the front end of the anaerobic baffle reaction tank, a plurality of vertical baffle plates (the included angle between the vertical plate of each vertical baffle plate and the bottom folded plate is 135 degrees) and vertical guide plates are respectively arranged in the direction perpendicular to the water flow direction, and the reaction tank is divided into a plurality of reaction chambers connected in series. A soft fiber filler (the length of a soft fiber filler bundle is 120mm, the bundle distance is 120mm, and the specific surface area is 1235 m) is arranged in the downward flow reaction chamber2/m3A pool). No filler is arranged in the upward flow reaction chamber, and the tail end of the anaerobic baffle reaction tank is provided with a water outlet hole of the anaerobic baffle reaction tank. The anaerobic baffle reaction tank is closed. The top is provided with a methane discharge pipe.
A hydrolysis acidification pool: the bottom of the hydrolysis acidification tank 8 is provided with a bottom air stirrer main pipe and a plurality of air stirring branch pipes, and the tank wall at the tail end of the hydrolysis acidification tank is provided with a hydrolysis acidification tank water outlet pipe. The hydrolysis acidification tank and the anaerobic baffle reaction tank are jointly built, the middle part is separated by a partition wall, and the partition wall is provided with water through holes to keep a water through section.
Anoxic/aerobic (A/O)1、O2) A biological reaction tank: the anoxic/aerobic (A/O)1、O2) The biological reaction tank is divided into an anoxic section (A) and a mud aerobic section (O)1) Membrane process aerobic section (O)2). An anoxic section (A) water inlet pipe is arranged at the upper part of the front end of the anoxic section (A), a carbon source supply pipe is arranged at the lower part of the front end, a nitrifying liquid return pipe is also arranged at the bottom of the tank, combined fillers (combined filler fiber ring sheets are 150mm, the distance between the sheets is 60mm, the distance between the sheets is 150mm, and the specific surface area is 2000m2/m3) In the anoxic zone (A) and the aerobic zone (O) of the mud process1) The partition walls which are separated from each other are provided with water outlets of an anoxic section (A); in the aerobic section (O) of the mud process1) The bottom of the tank is provided with an activated sludge return pipe, and the bottom of the tank is also provided with a middle and a micropore aerators (the middle and the micropore aerators are phi 215mm, and the air supply quantity is 1.5-3.0 m3A per hour, a service area of 0.35 to 0.8m2Oxygen utilization rate is more than or equal to 20 percent, and in an aerobic section (O) of a mud method1) And membrane process aerobic section (O)2) The partition wall is provided with a mud aerobic section (O)1) A water outlet hole; in the membrane process aerobic section (O)2) The bottom of the tail end is provided with a nitrifying liquid reflux pump 9c-1 and a nitrifying liquid reflux header pipe 9c-2 connected with the nitrifying liquid reflux pump, and the bottom of the tank is also provided with a rotational flow cutting aerator (250 × 90 × 350mm, the air supply amount is 0.5-3.5 m and is 0.5-3.5 m)3A service area of 0.3 to 1.0m2The utilization rate of oxygen is more than or equal to 21 percent), and elastic three-dimensional fillers (the diameter of an elastic three-dimensional filler unit is 173mm, each diameter is 0.5mm, and the specific surface area is 300 m) are arranged in the pool2/m3Pool) in the aerobic zone (O) of the membrane process2) The upper part of the rear pool wall is provided with a membrane method aerobic section (O)2) And (5) discharging a water pipe. Anoxic/aerobic (A/O)1.O2) The biological reaction tank is of a combined construction type, the middle of the biological reaction tank is separated by two partition walls respectively, and water outlet holes are formed in the partition walls so as to keep the water passing section.
The secondary sedimentation tank is an inclined tube sedimentation tank, a secondary sedimentation tank water inlet pipe is arranged at the front end of the secondary sedimentation tank, a secondary sedimentation tank sludge discharge pipe is arranged at the bottom of the secondary sedimentation tank, an inclined tube bracket and an inclined tube (the inclined tube bracket is ∠ 50 × 5mm angle steel, the specification of the ethylene-propylene copolymerization inclined tube is d is 100mm, theta is 60 degrees and the specification of the inclined tube l is 1000mm), a secondary sedimentation tank sludge outlet hole is formed in a partition wall between the secondary sedimentation tank and the sludge acidification tank, and a secondary sedimentation tank water outlet pipe is arranged at the upper part of the tail end of the secondary sedimentation tank.
A sludge acidification tank: the bottom of the sludge acidification tank is diagonally provided with a stirrer at the bottom of the sludge acidification tank, and the upper part of the wall of the tail end tank is provided with a sludge outlet pipe. The secondary sedimentation tank and the sludge acidification tank are of a combined construction type, the middle part of the secondary sedimentation tank and the sludge acidification tank are separated by a partition wall, and the middle lower part of the partition wall is provided with a secondary sedimentation tank sludge outlet hole for keeping a sludge cross section.
The multifunctional composite biological reaction tank (HBR) is divided into a denitrification section and a nitrification section, the volume of the denitrification section is 1/3, the volume of the nitrification section is 2/3, the upper part of the tank wall at the front end of the denitrification section is provided with a denitrification section water inlet pipe, nano polyurethane composite filler is arranged in the tank (suspended upper and lower steel wire meshes are arranged in the tank, filler is filled in a compartment formed by the upper and lower steel wire meshes, the filling rate is 40%, the porosity of the filler is 95%, the filler is 30mm cubic, and the specific surface area of the filler is 3.6 × 103m2/m3The microbial load is more than or equal to 10 g/L. ) A water outlet hole at the lower part of the denitrification section is formed in a partition wall between the denitrification section and the nitrification section, and a high-quality carbon source supply pipe is arranged at the top of the denitrification section; the bottom of the nitrification section is provided with a spiral micro-slit aeration hose, and a main pipe of the aeration hose is connected with a nitrification liquid reflux stripping pipe. And a nano polyurethane composite filler B is arranged in the pool (suspended upper and lower steel wire meshes are arranged in the pool, and a compartment formed by the upper and lower steel wire meshes is filled with the filler B, and the filling rate is 60 percent). A nitrification section water outlet pipe is arranged at the upper part of the tank wall at the tail end of the nitrification section. An activated sludge replenishing pipe.
③ the ecological deep processing unit comprises the following components:
the ecological filter bed is characterized in that an ecological filter bed water inlet pipe is arranged on the upper portion of a front end pond wall of the ecological filter bed, a filter plate and filter head assembly (the filter plate is made of reinforced concrete, and is 980, ×, 980 and × mm in size and × mm in width is arranged in a space 350mm upwards from the bottom of the ecological filter bed, a long handle filter head is arranged on the filter plate and is phi × H60 × mm in size, the filter plate and filter head assembly and the space at the bottom form a bottom water distribution space, a cushion layer (the cushion layer is quartz sand, the grain diameter is 2-4 mm, and the thickness is 100 mm), a gravel packing layer (the grain diameter of the gravel packing is 4-8 mm, and the thickness is 150 mm), a zeolite packing layer (the grain diameter of the zeolite packing is 8-16 mm, the thickness is 500 mm), a rice hull active carbon packing layer (the grain diameter of the rice hull active carbon packing layer is 0.95-1.35 mm, the thickness is 600 mm), soil and a mixed soil layer (the soil and the mixed soil layer occupies a total volume of the ecological filter bed soil layer, and the soil mixed soil layer is 350mm, and the plant-planted soil layer is arranged at the bottom of the ecological filter bed, and the ecological filter bed is 350 mm.
An aquatic plant pond: the front end of the aquatic plant pond 14 is provided with an aquatic plant pond water inlet pipe. The inside of the aquatic plant pond is divided into galleries with the width of about 6m by using brick walls, so that water flow runs in a single direction, the contact between the aquatic plants and sewage is increased, the length of the aquatic plant pond is about 50m, the width of the aquatic plant pond is about 24m (four galleries), the effective water depth is about 1.5m, and the hydraulic retention time is 3.5 d. A water ecological system (fish, mussel, snail, duck, goose and the like are cultured in the pond, submerged plants at the bottom are golden fish algae, the aquatic birds, protozoa, zooplankton, benthos, bacteria and algae form a complex water ecological system through a food chain and a water surface floating-leaf plant water lily) is constructed at the bottom of the aquatic plant pond, and an aquatic plant pond water outlet pipe is arranged at the tail end of the aquatic plant pond.
Disinfecting the clean water tank: and a disinfection device is arranged beside the disinfection clean water tank, and the disinfection device is an open channel type ultraviolet sterilizer. The tail part of the disinfection clean water tank is provided with a clean water delivery pump, and water after reaching the standard is extracted and discharged or recycled according to the requirement.
④ others
A high-pressure plate-and-frame filter press is arranged beside the secondary sedimentation tank; a fan is arranged beside the device; a high-quality carbon source adding tank is arranged beside the multifunctional composite biological reaction tank (HBR), and comprises a stirrer, a high-low liquid level switch, a metering pump and the like; an acidified sludge delivery pump is arranged beside the sludge acidification tank.
The implementation method for treating the livestock and poultry manure by applying the livestock and poultry manure standard-reaching discharge treatment device comprises the following steps:
the process flow of the implementation method for treating the livestock and poultry manure by the livestock and poultry manure discharge treatment device reaching the standard is shown in a figure 10.
2 method of implementation
① the animal dung and dirt enters the mixing and homogenizing tank through the feeding pipe of the mixing and homogenizing tank, and the vertical stirrer is started to stir and mix the animal dung and dirt uniformly.
② the mixed excrement and sewage enters the pre-treatment grid well through the discharge pipe of the mixing homogenizing pool, the coarse garbage, floating material and larger suspended matter are removed through the middle grid, and then the separated and filtered excrement and sewage is conveyed to the screw extrusion separator through the pre-treatment grid well lift pump.
③ the process of removing dung and dreg by screw extruding separator includes such steps as feeding sewage from the water inlet pipe of primary settling pool to primary settling pool for settling high-content suspended matter, discharging the settled sludge from the bottom of primary settling pool to high-pressure plate-and-frame filter press, and collecting supernatant and delivering it to biologic pre-reaction regulating pool.
④ after the supernatant fluid enters the biological pre-reaction adjusting tank, the underwater propeller at the bottom of the biological pre-reaction adjusting tank is started to mix and stir and provide 0.2-0.5 mg/L of dissolved oxygen DO to meet the requirement of biological pre-reaction, the fixed braid type filler arranged in the middle of the rear half part of the re-tank has high microbial activity of the filler and good mass transfer efficiency, and can improve the purification effect of a single tank by about 30 percent.
The biological pre-reaction tank has the following functions: carrying out biological pretreatment on the sewage to preliminarily improve biodegradability; the flow and concentration of the sewage are regulated.
The control conditions of the biological pre-reaction regulating reservoir are as follows: the water temperature is 18-35 ℃. The PH is 6-9, the DO is in the range of 0.2-0.5 mg/L, the sewage stays for 8h, the COD of the inlet water is 8000-11000 mg/L, and the COD of the outlet water is 7000-9625 mg/L; water inlet NH 3-N300-400 mg/L and water outlet NH3-N270～360mg/L。
⑤ the water from the adjusting pool enters into the anaerobic baffle reacting pool through the outlet pipe of the adjusting pool, the anaerobic baffle reacting pool is arranged with several vertical baffle plates and vertical guide plates in the direction vertical to the water flow to divide the reacting pool into several reacting chambers to maintain the high anaerobic sludge density in the reacting pool, the water flow entering into the anaerobic baffle reacting pool is guided by the vertical guide plates to flow upwards and downwards, and passes through the anaerobic sludge bed layers of the upward flowing chamber and the downward flowing chamber one by one, the organic pollutant in the water is contacted with the microbe completely to be removed, the soft fiber filler is arranged in the downward flowing reacting chamber, the upward flowing reacting chamber is not provided with filler to form the film-mud symbiotic growing environment of microbe to increase the number of microbe and change the quality of microbe to improve the processing effect, the marsh gas generated by the anaerobic baffle reacting pool is discharged from the marsh gas discharge pipe 7-6 to the marsh gas utilizing electricity generating process (out of this patent range), the water from the anaerobic baffle reacting pool enters into the hydrolytic acidification pool.
The anaerobic baffle reaction tank has the following functions: generating biogas; removing main organic pollutants COD and a small amount of ammonia nitrogen NH 3-N.
Controlling conditions: the water temperature is 20-40 ℃, the PH is 6.5-8.2, the DO is less than or equal to 0.1mg/L, the retention time is 48 hours, the COD of the inlet water is 7000-9625 mg/L, and the COD of the outlet water is 1050-1440 mg/L; inlet water NH 3-N270-360 mg/L, outlet water NH 3-N210-280 mg/L.
⑥ sewage enters the hydrolytic acidification tank, under the action of entering and bottom air stirring main pipe and air stirring, the top sludge of the sludge bed at the bottom of the tank is expanded and suspended, anaerobic fermentation is controlled in the hydrolytic acidification stage by residence time 4.5-5 h, soluble substances are hydrolyzed due to a large amount of suspended substances, macromolecular organic substances are degraded into micromolecular organic substances, the ratio of BOD/COD can be improved, the biochemical property of sewage biochemical treatment is improved, and the foundation is laid for the next procedure.
The function of the hydrolysis acidification tank is as follows: the hydrolytic acidification bacteria in the anaerobic reaction hydrolysis and acidification stages are utilized to hydrolyze, acidify and break chains of macromolecular long-chain organic pollutants and substances which are not easily biodegraded in the sewage, and break the macromolecular long-chain organic pollutants and the substances into small molecules so as to improve the biodegradability of the sewage, and the subsequent sewage treatment becomes easy.
Controlling conditions: the water temperature is 15-30 ℃, the PH is 6.8-8.2, the dissolved oxygen Do is less than or equal to 0.2mg/L, the retention time is 4.5-5 h, the inlet water COD is 1050-1440 mg/L, and the outlet water COD is 735-1000 mg/L; the inlet water NH 3-N210-280 mg/L and the outlet water NH 3-N168-224 mg/L.
⑦ the water from the hydrolytic acidification tank flows into anoxic/aerobic (A/O) tank from the water outlet pipe of the hydrolytic acidification tank through the water inlet pipe of the anoxic section (A)1、O2) A biological reaction tank. The underwater propeller at the bottom of the anoxic section (A) is started to provide necessary dissolved oxygen DO (dissolved oxygen) of 1.0-1.5 mg/L for denitrification reaction, and the combined filler arranged in the pool provides a relatively stable growth environment for the anoxic microorganisms, so that the concentration and activity of the anoxic microorganisms are increased, and the removal capacity and denitrification capacity of the anoxic section on organic pollutants are increased. A carbon source required by denitrification biological reaction is pumped by a nitrifying liquid reflux pump 9c-1 arranged at the bottom of the tail end of the aerobic section (O2) of the membrane method, nitrifying liquid enters the anoxic section (A)9a through a nitrifying liquid reflux header pipe, and the reflux ratio R of the nitrifying liquid is 4; when the carbon source is insufficient, the carbon source is supplemented by a carbon source supply pipe. The aerobic section is divided into a mud method aerobic section (O1) and a membrane method aerobic section (O2), wherein the mud method aerobic section (O1) is not provided with fillers and adopts a suspended activated sludge method; elastic three-dimensional filler is arranged in the membrane aerobic section (O2) and is used for attaching a biofilm method. The sludge and membrane combined treatment method utilizes different environments of each section to enable suspended and attached microorganisms to form respective advantages in each section through natural variation and natural competition, thereby improving the sewage treatment effect. In order to increase the microbial activity of the sludge aerobic section (O1), 2/3 activated sludge is pumped from the sludge acidification tank by an acidified sludge delivery pump arranged beside the sludge acidification tank, the acidified sludge enters the sludge aerobic section (O1) through an activated sludge return pipe connected with a sludge outlet pipe and is supplied, 1/3 activated sludge is pumped by a nitrifying liquid return pump arranged at the bottom of the tail end of the membrane aerobic section (O2) and is supplied through a branch pipe of a nitrifying liquid return header pipe. The activated sludge reflux ratio r is 1.
Anoxic/aerobic (A/O)1、O2) The function of the biological reaction tank is as follows: primary decarbonization and denitrification. The carbon source in the water is used as an electron donor, and the nitrate nitrogen in the nitrifying liquid is refluxed in the aerobic sectionAs electron acceptor to perform denitrification primary denitrification; the first-stage decarbonization of the sludge aerobic section (O1) and the membrane aerobic section (O2) is the degradation of organic matter COD and the nitration of ammonia nitrogen NH 3-N.
Controlling conditions: in the anoxic section (A), the water temperature is 15-40 ℃, the pH is 6.5-7.5, the dissolved oxygen DO is 1.0-1.5 mg/L, and the retention time is 20 h; the water temperature of the sludge process aerobic section (O1)9b and the membrane process aerobic section (O2) is 15-30 ℃, the pH value is 6.3-8, the dissolved oxygen DO is 2-4 mg/L, and the retention time is 40 h. The COD of the inlet water is 735-1000 mg/L, and the COD of the outlet water is 220-300 mg/L; the inlet water NH 3-N210-280 mg/L and the outlet water NH 3-N63-80 mg/L.
⑧ anoxic/aerobic (A/O)1、O2) The effluent of the biological reaction tank enters a secondary sedimentation tank from a water outlet pipe of a membrane aerobic section (O2) for mud-water separation, and a part of sediment bottom mud is subjected to pressure filtration by a high-pressure plate-and-frame filter press through a mud discharge pipe of the secondary sedimentation tank and then subjected to composting; and the other part of the sediment bottom sludge enters a sludge acidification tank through a sludge outlet hole of the secondary sedimentation tank to carry out acidification treatment on the residual sludge. The acidified sludge is pumped by an acidified sludge conveying pump and is respectively supplemented when a carbon source supply pipe is removed to supply insufficient carbon source required by denitrification reaction of the anoxic section (A) through an acidified sludge conveying pipe; the activated sludge is supplemented to the sludge aerobic section (O1) during the biological reaction of the activated sludge return pipe so as to increase the activity of the biological reaction microorganisms; an activated sludge replenishing pipe for the multifunctional composite biological reaction tank (HBR) replenishes activated sludge. Supernatant after precipitation and separation enters a multifunctional composite biological reaction tank (HBR) through a denitrification section water inlet pipe.
⑨ the multifunctional composite biological reaction tank (HBR) is divided into a denitrification section and a nitrification section, wherein the volume of the denitrification section is 1/3, the wings are provided with nano-poly-amino acid composite filler, aeration is not provided in the tank, the volume of the nitrification section is 2/3, the tank is provided with the nano-poly-amino acid composite filler, the bottom of the tank is provided with a spiral micro-slit aeration hose, the denitrification section and the nitrification section are separated by a partition wall, sewage firstly enters the denitrification section, is mixed with nitrifying liquid conveyed by a nitrifying liquid reflux stripping pipe of the nitrification section and high-quality carbon source biological humic acid (supplemented when C/N is less than 4) fed by a high-quality carbon source feeding pipe, nitrate nitrogen is converted into nitrogen escaping sewage, then the sewage enters the nitrification section from a water outlet at the lower part of the denitrification section, the spiral micro-slit aeration hose provides continuous and sufficient dissolved oxygen DO (dissolved oxygen DO 2-3 mg/L), the COD and NH3-N carry out secondary decarbonization on the sewage and ammonia nitrogen, the multifunctional composite biological reaction tank (HBR) so that the nitrification section and the nano-ammonia nitrogen react with different nano-poly-ammonia nitrogen concentrations respectively, and the composite biological filler, and the nitrification sludge can be subjected to the synchronous denitrification reaction, and the simultaneous occurrence of the nitrification section, and the polyurethane nitrification and the synchronous aerobic composite biological denitrification section, and the synchronous aerobic composite biological denitrification process of the polyurethane.
The function of the multifunctional composite biological reaction tank (HBR) is as follows: and (3) secondary decarbonization and denitrification, and synchronous nitrification-denitrification and short-cut nitrification-denitrification reactions are realized simultaneously. Compared with the traditional process, the method can improve the carbon removal and denitrification effects by about 40 percent.
Controlling conditions: the water temperature is 15-30 ℃, the PH is 7-8, the dissolved oxygen DO of the denitrification section is less than or equal to 0.5mg/L, oxygen is supplied when the nitrified liquid flows back through the nitrified liquid reflux stripping pipe 12b-2, the dissolved oxygen DO of the nitrification section is 2-3 mg/L, and the residence time of the two sections is 40 h. The COD of the inlet water is 220-300 mg/L, and the COD of the outlet water is 90-120 mg/L; water inlet NH 3-N63-80 mg/L, and water outlet NH 3-N20-30 mg/L.
⑩ the sewage after two-stage decarbonization and denitrification in the multifunctional composite biological reaction tank (HBR) enters the ecological filter bed from the ecological filter bed connected with the nitrifying section water outlet pipe, and the sewage flows through the filter bed plant layer, the soil and quartz sand mixed filler layer, the rice hull activated carbon filler layer, the zeolite filler layer, the gravel filler layer and the cushion layer from top to bottom, and the organic pollutants COD and the ammonia nitrogen NH3-N are deeply removed by the comprehensive action of the roots and stems of the plants and the filler layers in the processes of physical, chemical and biological reactions.
The function of the ecological filter bed is as follows: deep decarbonization and denitrification and adsorption of suspended substances SS.
Controlling conditions: the water temperature is 12-35 ℃, the PH is 6-9, and the retention time is 24 h. The COD of the inlet water is 90-120 mg/L, and the COD of the outlet water is 80-100 mg/L; the inlet water NH 3-N20-30 mg/L and the outlet water NH 3-N15-20 mg/L.
⑪The sewage treated by the ecological filter bed enters an aquatic plant pond from a bottom water distribution room through an ecological filter bed water outlet pipe and an aquatic plant pond water inlet pipe connected with the ecological filter bed water outlet pipe, and passes through an aquatic ecosystem (fish, mussel, snail, duck, goose and the like are cultured in the pond, and aquatic birds, protozoa, zooplankton, benthos, bacteria and algae form the aquatic ecosystem through a food chain and a water surface floating-leaf plant water lily, so that the water quality can be further purified, the water quality can be kept in a close state, suspended matters and algae in the water can be reduced, and the COD (chemical oxygen demand) of the water purified by the aquatic plant sugar can be lower than 100mg/L, NH (ammonia) can be reduced3N can be lower than 15mg/L, SS can be lower than 70mg/L, and the indexes of the national Integrated wastewater discharge Standard (GB8978-1996) are reached. Qualified water after being treated by passing through the water outlet pipe of the aquatic plant pond enters a disinfection clean water tank, is disinfected by a disinfection equipment open channel type ultraviolet sterilizer and then is discharged into a receiving water body by a clean water delivery pump or is recycled according to requirements.
⑫ anoxic/aerobic (A/O)1、O2) The micro-porous aerator, the rotational flow shearing aerator and the spiral micro-slit aeration hose arranged in the multifunctional composite biological reaction tank (HBR) arranged in the biological reaction tank 9 are connected with the fan and the air main pipe so as to provide dissolved oxygen DO provided by the biological reaction of each aerobic biological reaction tank.
Compared with the prior art, the utility model has the advantages that: for organic COD and ammonia nitrogen NH3The livestock and poultry manure with high N concentration and strict effluent quality requirement adopts a multi-element combination technology of pretreatment, two-stage biochemical treatment and ecological advanced treatment process, can really treat the livestock and poultry manure with high pollutant concentration to reach the first-level water quality standard in the national Integrated wastewater discharge Standard (GB8978-1996), and can ensure the long-term stable survival of livestock and poultry breedingAnd (4) development.
To the scale plant that does not have supporting farmland, adopt the utility model discloses a good selection.
Drawings
The invention will be further explained with reference to the accompanying drawings.
FIG. 1 is a plan layout view of a livestock and poultry excrement standard discharge treatment device;
FIG. 2 is a sectional view (elevation view) taken along line A-A of FIG. 1;
FIG. 3 is an elevation view of reference numerals 5 and 6 (primary sedimentation tank, biological reaction control tank);
FIG. 4 is an elevation view of numbers 7 and 8 (anaerobic baffled reaction tank, hydrolysis acidification tank);
FIG. 5 is an elevation view of serial No. 9 (anoxic/aerobic (A/O1, O2)) biological reaction tank;
FIG. 6 is an elevation view of reference numerals 10 and 11 (secondary sedimentation tank, hydrolysis acidification tank);
FIG. 7 is an elevation view of reference numeral 12 (multifunctional composite biological reaction tank [ HBR ]);
FIG. 8 is an elevation view of item 13 (Artificial ecological Filter bed);
FIG. 9 is an elevation view of Ser. No. 14 (aquatic plant pond);
FIG. 10 is a process flow diagram of a livestock and poultry manure standard-reaching discharge treatment facility and an implementation device.
In the figure.
1-mixing and homogenizing pool; 1-feeding pipe of mixing homogenizing pool; 1-2-vertical mixer; 1-3-discharge pipe of mixing homogenizing pool.
2-pretreatment of the grid well; 2-1-middle grid.
And 3, pre-treating the grid well lift pump.
4-screw extrusion separator.
5, a primary sedimentation tank; 5-1-water inlet pipe of the primary sedimentation tank; 5-2-a water collecting tank of the primary sedimentation tank; 5-3-water outlet of the primary sedimentation tank; 5-4, a sludge discharge pipe at the bottom of the primary sedimentation tank.
6-biological pre-reaction regulating reservoir; 6-1-an underwater propeller at the bottom of the biological pre-reaction tank; 6-2-braid type filling; 6-3-water outlet pipe of biological pre-reaction regulating tank.
7-anaerobic baffle reaction tank; 7-1-water inlet pipe of anaerobic baffle reaction tank; 7-2-vertical baffle plate; 7-3-vertical baffles; 7-4-soft fibrous filler; 7-5-water outlet holes of the anaerobic baffle reaction tank; 7-6-biogas discharge pipe.
8, a hydrolysis acidification pool; 8-1-bottom air agitator main pipe; 8-2-air stirring branch pipe; 8-3-water outlet pipe of hydrolysis acidification pool.
9-anoxic/aerobic (A/O1, O2) biological reaction tank; 9 a-anoxic zone (a); 9 a-1-anoxic section (A) water inlet pipe; 9 a-2-carbon source supply pipe; 9 a-3-an underwater propeller at the bottom of the anoxic section (A); 9 a-4-nitrifying liquid reflux pipe; 9a-5 — a packing combination; 9 b-mud aerobic section (O1); 9 b-1-activated sludge return pipe; 9 b-2-medium and micro-porous aerators; 9 b-3-outlet of aerobic section (O1) by mud method;
9 c-Membrane Process aerobic section (O)2) (ii) a 9 c-1-nitrifying liquid reflux pump; 9 c-2-nitration liquid reflux header pipe; 9 c-3-cyclone cutting aerator; -elastic three-dimensional filler 9 c-4; 9 c-5-water outlet pipe.
10-secondary sedimentation tank; 10-1-a water inlet pipe of a secondary sedimentation tank; 10-2-a secondary sedimentation tank sludge discharge pipe; 10-3-pipe chute support and pipe chute; 10-4, a secondary sedimentation tank mud outlet; 10-secondary sedimentation tank; 10-5-a secondary sedimentation tank water outlet pipe.
11-sludge acidification pool; 11-1-a stirrer at the bottom of the sludge acidification tank; 11-2-sludge outlet pipe.
12-multifunctional composite biological reaction tank (HBR); 12 a-a denitrification section; 12 b-a nitration stage; 12 a-1-denitrification section water inlet pipe; 12 a-2-nano polyurethane composite filler A; 12 a-3-water outlet at the lower part of the denitrification section; 12 a-4-high-quality carbon source supply pipe; 12 b-1-spiral micro-slit aeration hose; 12 b-2-nitration liquid reflux stripping tube; 12 b-3-nano polyurethane composite filler B; 12 b-4-a water outlet pipe of the nitrification section; 12 b-5-activated sludge replenishing pipe.
13-an ecological filter bed; 13-1-water inlet pipe of ecological filter bed; 13-2, the filter plate and filter head assembly and the bottom space form a bottom water distribution room; 13-3-filter plate and filter head assembly; 13-4, arranging cushion layers upwards in sequence; 13-5 gravel packing layer; 13-6-zeolite packing layer; 13-7-rice hull activated carbon packing layer; 13-8-a mixed packing layer of soil and quartz sand; 13-9-filtering the bed plant layer; 13-10-water outlet pipe of the ecological filter bed.
14-aquatic plant ponds; 14-1-aquatic plant pond water inlet pipe; 14-2 — water ecosystem; 14-3-water outlet pipe of aquatic plant pond.
15-disinfecting the clean water tank; 15-1-sterilizing equipment.
16-clear water delivery pump.
17-high pressure plate and frame filter press.
18-a fan; 18-1 — air manifold.
19-high-quality carbon source adding tank; 19-1-high-quality carbon source feeding pipe.
20-acidified sludge transfer pump; 20-1-acidified sludge conveying pipe.
Detailed Description
For a better understanding of the present invention, the present invention will be further described with reference to the following examples.
Example 1
As shown in figures 1-9, a standard-reaching discharge treatment device for livestock and poultry manure comprises ① pretreatment units including a mixing homogenizing tank 1, a pretreatment grid well 2, a pretreatment grid lifting pump 3, a spiral extrusion separator 4, a primary sedimentation tank 5, a biological pretreatment regulating tank 6, ② biochemical treatment units including an anaerobic baffle reaction tank 7, a hydrolytic acidification tank 8, and an anoxic/aerobic (A/O) treatment unit1、O2) The biological reaction tank, the secondary sedimentation tank, the sludge acidification tank 11 and the multifunctional composite biological reaction tank (HBR)12, and the ③ ecological advanced treatment unit comprises an ecological filter bed 13, an aquatic plant pond 14 and a disinfection clean water tank 15.
① the preprocessing unit includes the following:
mixing and homogenizing tank 1: the inlet of the mixing homogenizing pool 1 is provided with a feeding pipe 1-1 of the mixing homogenizing pool, the inside of the mixing homogenizing pool is provided with a vertical stirrer 1-2, and the outlet of the mixing homogenizing pool is provided with a discharging pipe 1-3 of the mixing homogenizing pool.
Pretreatment grid well 2: the net clearance of the grid bars of the middle grid 2-1 in the pretreatment grid well 2 is 30-35 mm, and the installation inclination angle of the middle grid is 75 degrees.
Pretreatment grid well lift pump 3: the pretreatment grid well lift pump 3 is a slurry pump.
Screw extrusion separator 4: the spiral extrusion separator 4 is composed of a belt wheel, a differential mechanism, a bearing seat, an overflow plate, a rotary drum, a housing, an extrusion screw and the like.
A primary sedimentation tank 5: the primary sedimentation tank 5 is a horizontal flow sedimentation tank, a primary sedimentation tank water inlet pipe 5-1 is arranged at the front end of the tank, a primary sedimentation tank water collecting tank 5-2 is arranged at the upper part of the tank, a primary sedimentation tank water outlet hole 5-3 is arranged on the wall of the tank at the tail end of the tank, and a primary sedimentation tank bottom sludge discharge pipe 5-4 is arranged at the bottom of the tank tail end.
The biological pre-reaction regulating tank 6: the diagonal line at the bottom of the biological pre-reaction regulating tank 6 is provided with a biological pre-reaction tank bottom underwater propeller 6-1, and the middle of the rear half of the tank is provided with a braid type filler 6-2 (the diameter of a braid of the braid type filler is 40mm, the space between braids is 100mm, the line spacing is 200mm, the height of a pile loop is 20mm, and the specific surface area is 2000m2/m3A water outlet pipe 6-3 of the biological pre-reaction regulating tank is arranged on the tank wall at the tail end of the tank. The biological pre-reaction regulating tank 6 and the primary settling tank 5 are of a combined type, the middle of the biological pre-reaction regulating tank and the primary settling tank are separated by a partition wall, and the wall of the biological pre-reaction regulating tank is provided with water through holes so as to keep the water through section.
② the biochemical processing unit includes the following:
anaerobic baffle reaction tank 7: the front end of the anaerobic baffle reaction tank 7 is provided with an anaerobic baffle reaction tank water inlet pipe 7-1, a plurality of vertical baffle plates (the included angle between the vertical plate of the vertical baffle plate and the bottom folded plate is 135 degrees) 7-2 and vertical guide plates 7-3 are respectively arranged in the direction vertical to the water flow, and the reaction tank is divided into a plurality of reaction chambers connected in series. A soft fiber filler 7-4 (the length of a soft fiber filler bundle is 120mm, the bundle distance is 120mm, and the specific surface area is 1235 m) is arranged in the downward flow reaction chamber2/m3A pool). No filler is arranged in the upward flow reaction chamber, and the tail end of the anaerobic baffle reaction tank 7 is provided with an anaerobic baffle reaction tank water outlet 7-5. The anaerobic baffle reaction tank 7 is closed. The top is provided with a biogas discharge pipe 7-6.
And (3) hydrolysis acidification pool 8: the bottom of the hydrolysis acidification tank 8 is provided with a bottom air stirrer main pipe 8-1 and a plurality of air stirring branch pipes 8-2, and the tank wall at the tail end of the hydrolysis acidification tank is provided with a hydrolysis acidification tank water outlet pipe 8-3. The hydrolysis acidification tank 8 and the anaerobic baffle reaction tank 7 are built together, the middle part is separated by a partition wall, and the partition wall is provided with water through holes to keep a water through section.
Anoxic/aerobic (A/O)1、O2) The biological reaction tank 9: the anoxic/aerobic (A/O)1、O2) The biological reaction tank 9 is divided into an anoxic section (A)9a and a mud aerobic section (O)1)9b Membrane Process aerobic section (O)2)9c, and 9 c. The upper part of the front end of the anoxic section (A)9a is provided with an anoxic section (A) water inlet pipe 9a-1, the lower part of the front end is provided with a carbon source supply pipe 9a-3, the bottom of the tank is also provided with a nitrifying liquid return pipe 9a-4, the tank is provided with combined fillers 9a-5 (the combined filler fiber ring sheets are 150mm, the distance between the sheets is 60mm, the arrangement distance in the tank is 150mm, and the specific surface area is 2000m2/m3) In the anoxic zone (A)9a and the aerobic zone (O) by mud method1)9b are provided with water outlet holes 9a-6 of an anoxic section (A); in the aerobic section (O) of the mud process1) The bottom of the tank 9b is provided with an activated sludge return pipe 9b-1, and the bottom of the tank is also provided with a middle and micro-pore aerator 9b-2 (the middle and micro-pore aerator is phi 215mm, and the air supply amount is 1.5-3.0 m3A per hour, a service area of 0.35 to 0.8m2Oxygen utilization rate is more than or equal to 20 percent, and in an aerobic section (O) of a mud method1)9b and Membrane Process aerobic section (O)2) The partition wall between 9c is provided with a mud aerobic section (O)1) Water outlet hole 9 b-3; in the membrane process aerobic section (O)2) A nitrifying liquid reflux pump 9c-1 and a nitrifying liquid reflux main pipe 9c-2 connected with the nitrifying liquid reflux pump are arranged at the bottom of the tail end of the 9c, and a rotational flow cutting aerator 9c-3 (a rotational flow cutting aerator 250 × 90 × 350mm, the air supply quantity is 0.5-3.5 m and is also arranged at the bottom of the tank3A service area of 0.3 to 1.0m2The utilization rate of oxygen is more than or equal to 21 percent), and elastic three-dimensional packing 9c-4 (the diameter of each elastic three-dimensional packing unit is 173mm, the diameter of each elastic three-dimensional packing unit is 0.5mm, and the specific surface area is 300m2/m3Pool) in the aerobic zone (O) of the membrane process2) The upper part of the tank wall at the rear end of the 9c is provided with a membrane method aerobic section (O)2) And a water outlet pipe 9 c-5. Anoxic/aerobic (A/O)1、O2) The biological reaction tank 9 is of a combined construction type, the middle of the biological reaction tank is separated by two partition walls respectively, and water outlet holes are formed in the partition walls to keep the water passing section.
The secondary sedimentation tank 10 is an inclined tube sedimentation tank, a secondary sedimentation tank water inlet pipe 10-1 is arranged at the front end of the secondary sedimentation tank 10, a secondary sedimentation tank sludge discharge pipe 10-2 is arranged at the bottom of the secondary sedimentation tank, an inclined tube support and an inclined tube 10-3 (the inclined tube support is angle steel of ∠ 50 × 5mm, the specification of the ethylene-propylene copolymer inclined tube is that d is 100mm, theta is 60mm, and the specification of the inclined tube l is 1000mm) are arranged in the secondary sedimentation tank 10, a secondary sedimentation tank sludge outlet hole 10-4 is formed in a partition wall between the secondary sedimentation tank 10 and the sludge acidification tank 11, and a secondary sedimentation tank water outlet pipe 10-5 is arranged at the upper part of the tail end of the secondary sedimentation tank 10.
Sludge acidification tank 11: the bottom of the sludge acidification tank 11 is diagonally provided with a stirrer 11-1 at the bottom of the sludge acidification tank, and the upper part of the wall of the tail end tank is provided with a sludge outlet pipe 11-2. The secondary sedimentation tank 10 and the sludge acidification tank 11 are of a combined construction type, the middle of the secondary sedimentation tank and the sludge acidification tank are separated by a partition wall, and the middle lower part of the partition wall is provided with a secondary sedimentation tank sludge outlet hole 10-4 to keep a sludge cross section.
A multifunctional composite biological reaction tank (HBR)12, wherein the multifunctional composite biological reaction tank (HBR)12 is divided into a denitrification section 12a and a nitrification section 12b, the volume of the denitrification section 12a accounts for 1/3, the volume of the nitrification section 12b accounts for 2/3, a denitrification section water inlet pipe 12a-1 is arranged at the upper part of the tank wall at the front end of the denitrification section 12a, a nano polyurethane composite filler A12 a-2 is arranged in the tank (suspended upper and lower steel wire meshes are arranged in the tank, and filler is filled in a compartment formed by the upper and lower steel wires, the filling rate is 40%, the porosity of the filler is 95%, the filler is 30mm cubic, and the specific surface area of the filler is 3.6 × 103m2/m3The microbial load is more than or equal to 10 g/L. ). A water outlet hole 12a-3 at the lower part of the denitrification section is formed in a partition wall between the denitrification section 12a and the nitrification section 12b, and a high-quality carbon source supply pipe 12a-4 is arranged at the top of the denitrification section 12 a; a spiral micro-slit aeration hose 12b-1 is arranged at the bottom of the nitrification section 12b, and a nitrification liquid reflux stripping pipe 12b-2 is connected to a main pipe of the aeration hose. The pond is internally provided with a nano polyurethane composite filler B12 b-3 (suspended upper and lower steel wire meshes are arranged in the pond, and a compartment formed by the upper and lower steel wire meshes is filled with the filler B, and the filling rate is 60 percent). A nitrification section water outlet pipe 12b-4 is arranged at the upper part of the tank wall at the tail end of the nitrification section 12 b. An activated sludge replenishing pipe 12 b-5.
③ the ecological deep processing unit comprises the following components:
an ecological filter bed 13, wherein an ecological filter bed water inlet pipe 13-1 is arranged on the upper portion of the front end tank wall of the ecological filter bed 13, a filter plate and filter head assembly 13-3 (the filter plate is made of reinforced concrete and is in a size of × and ×, and is 980, ×, × mm) is arranged in a space 350mm from the bottom of the ecological filter bed upwards, a long handle filter head is arranged on the filter plate and is in a size of phi × H, 60, × mm, and the filter plate and filter head assembly and the bottom space form a bottom water distribution room 13-2. the filter plate and filter head assembly 13-3 is sequentially provided with a cushion layer 13-4 (the cushion layer is quartz sand, the grain diameter is 2-4 mm, the thickness is 100 mm), a gravel packing layer 13-5 (the gravel packing grain diameter is 4-8 mm, the thickness is 150 mm), a zeolite packing layer 13-6 (the grain diameter is 8-16 mm, the thickness is 500 mm), activated carbon 13-7 (the grain diameter of activated carbon packing is 0.95-1.35 mm, the grain diameter of the ecological filter bed, the soil packing layer is 600mm, the thickness of the soil mixed with rice husk-quartz sand, the mixed soil is 0.10 mm, and the mixed soil is arranged at the tail end of the mixed soil of the ecological filter bed soil of the soil.
Aquatic plant pond 14: the front end of the aquatic plant pond 14 is provided with an aquatic plant pond water inlet pipe 14-1. The inside of the aquatic plant pond is divided into galleries with the width of about 6m by using brick walls, so that water flow runs in a single direction, the contact between the aquatic plants and sewage is increased, the length of the aquatic plant pond is about 50m, the width of the aquatic plant pond is about 24m (four galleries), the effective water depth is about 1.5m, and the hydraulic retention time is 3.5 d. A water ecosystem 14-2 (fish, mussel, snail, duck, goose and the like are cultured in the pond, submerged plants at the bottom are Goldfish algae, the aquatic birds, protozoa, zooplankton, benthos, bacteria and algae form a complex water ecosystem through a food chain and a water surface floating-leaf plant water lily) is constructed at the bottom of the aquatic plant pond, and a water outlet pipe 14-3 of the aquatic plant pond is arranged at the tail end of the aquatic plant pond.
And (4) disinfecting the clean water tank 15: a disinfection device 15-1 is arranged beside the disinfection clean water tank 15, and the disinfection device is an open channel type ultraviolet sterilizer. The tail part of the disinfection clean water tank is provided with a clean water delivery pump 16, and water after reaching the standard is extracted and discharged or recycled according to the requirement.
④ others
A high-pressure plate-and-frame filter press 17 is arranged beside the secondary sedimentation tank 10; a fan 18 is arranged beside the device; a high-quality carbon source adding tank 19 is arranged beside the multifunctional composite biological reaction tank (HBR)12, and comprises a stirrer, a high-low liquid level switch, a metering pump and the like; an acidified sludge transfer pump 20 is arranged beside the sludge acidification tank.
Example 2
The implementation method for treating the livestock and poultry manure by applying the livestock and poultry manure standard-reaching discharge treatment device comprises the following steps:
the process flow of the implementation method for treating the livestock and poultry manure by the livestock and poultry manure discharge treatment device reaching the standard is shown in a figure 10.
2 method of implementation
① the livestock and poultry manure enters the mixing and homogenizing tank 1 through the feeding pipe 1-1 of the mixing and homogenizing tank, and the vertical stirrer 1-2 is started to stir and mix the livestock and poultry manure uniformly.
② the mixed manure enters the pre-treatment grid well 2 through the discharge pipe 1-3 of the mixing homogenizing pool, the coarse garbage, floating material and larger suspended matter are removed through the middle grid 2-1, and then the separated and filtered manure is conveyed to the screw extrusion separator 4 through the pre-treatment grid well lift pump 3.
③ the manure and slag separated by the screw extrusion separator 4 is treated by composting process (outside the patent range). Sewage enters the primary sedimentation tank 5 from the primary sedimentation tank inlet pipe 5-1 arranged at the front end of the primary sedimentation tank, and is primarily sedimentated and separated for high content suspended matters, the separated precipitated sludge is discharged into the high pressure plate and frame filter press 17 from the primary sedimentation tank bottom mud discharge pipe 5-4 arranged at the bottom of the tank end, and the separated supernatant enters the biological pre-reaction regulating tank 6 through the primary sedimentation tank water collecting tank 5-2 and the primary sedimentation tank water outlet 5-3.
④ after the supernatant enters the biological pre-reaction adjusting tank 6, the underwater propeller 6-1 at the bottom of the biological pre-reaction adjusting tank is started to mix and stir and provide 0.2-0.5 mg/L of dissolved oxygen DO to meet the requirement of biological pre-reaction, the fixed braid type filler 6-2 arranged in the middle of the rear half part of the re-tank has high filler microbial activity and good mass transfer efficiency, and can improve the purification effect of a single tank by about 30 percent.
The biological pre-reaction tank regulating tank 6 has the functions: carrying out biological pretreatment on the sewage to preliminarily improve biodegradability; the flow and concentration of the sewage are regulated.
The control conditions of the biological pre-reaction regulating tank 6 are as follows: the water temperature is 18-35 ℃. The PH is 6-9, the DO is in the range of 0.2-0.5 mg/L, the sewage stays for 8h, the COD of the inlet water is 8000-11000 mg/L, and the COD of the outlet water is 7000-9625 mg/L; water inlet NH 3-N300-400 mg/L and water outlet NH3-N270～360mg/L。
⑤ the water from the adjusting pool 6 enters into the anaerobic baffle reacting pool 7 from the outlet pipe 6-3 of the adjusting pool, the anaerobic baffle reacting pool is set with several vertical baffle plates 7-2 and vertical guide plates 7-3 in the direction vertical to the water flow to divide the reacting pool into several reacting rooms to maintain the high anaerobic sludge density in the reacting pool, the water flow entering into the anaerobic baffle reacting pool 7 is guided by the vertical guide plates to flow upwards and downwards, and passes through the anaerobic sludge bed layers of the upward flow room and the downward flow room one by one, the organic pollutant in the water is contacted with the microbe completely to be removed, the soft fiber filler 7-4 is set in the downward flow reacting room, the upward flow reacting room is not set with filler to form the film mud symbiotic growing environment of microbe to increase the number of microbe and change the quality of microbe to improve the processing effect, the marsh gas generated by the anaerobic baffle reacting pool goes to the marsh gas generating process (outside the patent range) from the outlet pipe 7-6 of the anaerobic baffle reacting pool to the hydrolytic acidifying pool 8.
The anaerobic baffle reaction tank 7 has the functions of: generating biogas; removing main organic pollutants COD and a small amount of ammonia nitrogen NH 3-N.
Controlling conditions: the water temperature is 20-40 ℃, the PH is 6.5-8.2, the DO is less than or equal to 0.1mg/L, the retention time is 48 hours, the COD of the inlet water is 7000-9625 mg/L, and the COD of the outlet water is 1050-1440 mg/L; the inlet water NH3-N is 270-360 mg/L, and the outlet water NH3-N is 210-280 mg/L.
⑥ after sewage enters the hydrolytic acidification tank 8, under the action of the inlet and bottom air stirring header pipe 8-1 and air stirring 8-2, the surface layer sludge of the sludge bed at the bottom of the tank is expanded and suspended, anaerobic fermentation is controlled in the hydrolytic acidification stage by residence time 4.5-5 h, soluble substances are hydrolyzed due to a large amount of suspended substances, macromolecular organic substances are degraded into micromolecular organic substances, the BOD/COD ratio can be improved, namely, the biochemical property of the biochemical treatment of the sewage is improved, and a foundation is laid for the next procedure.
The hydrolysis acidification tank 8 has the functions of: the hydrolytic acidification bacteria in the anaerobic reaction hydrolysis and acidification stages are utilized to hydrolyze, acidify and break chains of macromolecular long-chain organic pollutants and substances which are not easily biodegraded in the sewage, and break the macromolecular long-chain organic pollutants and the substances into small molecules so as to improve the biodegradability of the sewage, and the subsequent sewage treatment becomes easy.
Controlling conditions: the water temperature is 15-30 ℃, the PH is 6.8-8.2, the dissolved oxygen Do is less than or equal to 0.2mg/L, the retention time is 4.5-5 h, the influent COD is 1050-1440 mg/L, and the effluent COD is 735-1000 mg/L; the inlet water NH 3-N210-280 mg/L and the outlet water NH 3-N168-224 mg/L.
⑦ the water from hydrolysis acidification tank 8 enters anoxic/aerobic (A/O) from water outlet pipe 8-3 of hydrolysis acidification tank through water inlet pipe 9a-1 of anoxic section (A)1、O2) And a biological reaction tank 9. The underwater propeller 9a-3 at the bottom of the anoxic section (A) is started to provide necessary dissolved oxygen DO 1.0-1.5 mg/L for denitrification reaction, and the combined filler 9a-5 arranged in the pool provides a relatively stable growth environment for the anoxic microorganisms, so that the concentration and activity of the anoxic microorganisms are increased, and the removal capacity and denitrification capacity of the anoxic section on organic pollutants are increased. A carbon source required by denitrification biological reaction is pumped by a nitrifying liquid reflux pump 9c-1 arranged at the bottom of the tail end of a membrane aerobic section (O2)9c, nitrifying liquid enters an anoxic section (A)9a through a nitrifying liquid reflux header pipe 9c-2, and the reflux ratio R of the nitrifying liquid is 4; when the carbon source is insufficient, the carbon source is supplemented by a carbon source supply pipe 9 a-2. The aerobic section is divided into a mud method aerobic section (O1)9b and a membrane method aerobic section (O2)9c, and the mud method aerobic section (O1)9b is not provided with filler and is a suspended activated sludge method; elastic three-dimensional filler 9c-4 is arranged in the membrane aerobic section (O2) and is used for attaching a biofilm method. The sludge and membrane combined treatment method utilizes different environments of each section to enable suspended and attached microorganisms to form respective advantages in each section through natural variation and natural competition, thereby improving the sewage treatment effect. In order to increase the microbial activity of the aerobic section (O1) of the sludge process, 2/3 activated sludge is arranged in a sludge acidification tankAn acidified sludge delivery pump 20 beside 11 pumps acidified sludge from a sludge acidification tank 11 and enters a sludge aerobic section (O1)9b for supply through an activated sludge return pipe 9b-1 connected with a sludge outlet pipe 11-2, and 1/3 activated sludge is pumped by a nitrifying liquid return pump 9c-1 arranged at the bottom of the tail end of a membrane aerobic section (O2)9c and supplied through a branch pipe of a nitrifying liquid return header pipe 9 c-2. The activated sludge reflux ratio r is 1.
Anoxic/aerobic (A/O)1、O2) The function of the biological reaction tank 9 is: primary decarbonization and denitrification. The carbon source in the water is used as an electron donor, and nitrate nitrogen in the aerobic section reflux nitrification liquid is used as an electron acceptor to carry out denitrification primary denitrification; the first-stage decarbonization of the sludge aerobic section (O1) and the membrane aerobic section (O2) is the degradation of organic matter COD and the nitration of ammonia nitrogen NH 3-N.
Controlling conditions: an anoxic section (A)9a, wherein the water temperature is 15-40 ℃, the pH is 6.5-7.5, the dissolved oxygen DO is 1.0-1.5 mg/L, and the retention time is 20 hours; a mud method aerobic section (O1)9b and a membrane method aerobic section (O2)9c, wherein the water temperature is 15-30 ℃, the PH is 6.3-8, the dissolved oxygen DO is 2-4 mg/L, and the retention time is 40 h. The COD of the inlet water is 735-1000 mg/L, and the COD of the outlet water is 220-300 mg/L; the inlet water NH 3-N210-280 mg/L and the outlet water NH 3-N63-80 mg/L.
⑧ anoxic/aerobic (A/O)1、O2) The effluent of the biological reaction tank 9 enters a secondary sedimentation tank 10 from a water outlet pipe 9c-5 of a membrane aerobic section (O2) for mud-water separation, and a part of sediment bottom mud is removed from a secondary sedimentation tank mud discharge pipe 10-2 to a high-pressure plate-and-frame filter press 17 for filter pressing and then is subjected to a composting process; the other part of the sediment bottom sludge enters a sludge acidification tank 11 through a sludge outlet hole 10-4 of the secondary sedimentation tank to carry out acidification treatment on the residual sludge. The acidified sludge is pumped by an acidified sludge delivery pump 20 and is respectively fed through an acidified sludge delivery pipe 20-1 to a carbon source supply pipe 9a-2 to supplement when the carbon source required by the denitrification reaction of the anoxic section (A)9a is insufficient; the activated sludge is supplemented to the sludge aerobic section (O1)9b when the activated sludge return pipe 9b-1 carries out biological reaction so as to increase the activity of the biological reaction microorganisms; an activated sludge replenishing pipe 12b-5 for replenishing activated sludge to the multifunctional composite biological reaction tank (HBR) 12. The supernatant after precipitation separation enters a multifunctional composite biological reaction tank (HBR)12 from a denitrification section water inlet pipe 12 a-1.
⑨ the multifunctional composite biological reaction tank (HBR)12 is divided into a denitrification section 12a and a nitrification section 12b, the volume of the denitrification section is 1/3, the wings are provided with nano-poly-amino acid composite filler A12 a-2, no aeration is arranged in the tank, the volume of the nitrification section is 2/3, the nano-poly-amino acid composite filler 12a-3 is arranged in the tank, the bottom of the tank is provided with a spiral slit aeration hose 12b-1, the denitrification section 12a and the nitrification section 12b are separated by a partition wall, sewage firstly enters the denitrification section 12a, is mixed with carbon source high-quality biological humic acid (supplemented when C/N is less than 4) fed into a nitrification liquid reflux air stripping pipe 12b-2 of the nitrification section 12b through a high-quality carbon source feeding pipe 19-1 and completes the microbial denitrification reaction, nitrate nitrogen is converted into sewage escaped from a water outlet 12a-3 of the denitrification section 12b, the sewage enters the nitrification section 12b from a denitrification section, continuous sufficient dissolved oxygen (DO 3/DO) is provided by the spiral slit aeration hose 12b-1, the continuous dissolved oxygen-dissolved nitrogen is provided by the spiral slit aeration hose 12 b-36, the continuous biological reaction, the continuous and the ammonia-nitrogen-enriched composite sludge can be maintained in the nitrification section, the sludge with the composite sludge, the composite sludge with the biochemical denitrification effect, the biochemical denitrification effect of the biochemical denitrification section, the nitrification section, the composite sludge with the composite sludge, the composite sludge with the composite aeration sludge, the composite sludge with the denitrification section, the composite sludge with the nitrification section, the denitrification section, the composite sludge with the denitrification section, the denitrification, the.
The function of the multifunctional composite biological reaction tank (HBR) 12: and (3) secondary decarbonization and denitrification, and synchronous nitrification-denitrification and short-cut nitrification-denitrification reactions are realized simultaneously. Compared with the traditional process, the method can improve the carbon removal and denitrification effects by about 40 percent.
Controlling conditions: the water temperature is 15-30 ℃, the PH is 7-8, the dissolved oxygen DO of the denitrification section is less than or equal to 0.5mg/L, oxygen is supplied when the nitrified liquid flows back through the nitrified liquid reflux stripping pipe 12b-2, the dissolved oxygen DO of the nitrification section is 2-3 mg/L, and the residence time of the two sections is 40 h. The COD of the inlet water is 220-300 mg/L, and the COD of the outlet water is 90-120 mg/L; water inlet NH 3-N63-80 mg/L, and water outlet NH 3-N20-30 mg/L.
⑩ the sewage after the second stage decarbonization and denitrification in the multifunctional composite biological reaction tank (HBR)12 enters the ecological filter bed 13 from the ecological filter bed 13-1 connected with the nitrifying section water outlet pipe 12b-4, the sewage flows through the filter bed plant layer 13-9, the soil and quartz sand mixed filler layer 13-8, the rice hull activated carbon filler layer 13-7, the zeolite filler layer 13-6, the gravel filler layer 13-5 and the cushion layer 13-4 from top to bottom, and the organic pollutant COD and the ammonia nitrogen NH3-N are deeply removed by the comprehensive action of the plant rhizome and each filler layer in the process of physical, chemical and biological reaction.
The function of the ecological filter bed 13 is: deep decarbonization and denitrification and adsorption of suspended substances SS.
Controlling conditions: the water temperature is 12-35 ℃, the PH is 6-9, and the retention time is 24 h. The COD of the inlet water is 90-120 mg/L, and the COD of the outlet water is 80-100 mg/L; the inlet water NH 3-N20-30 mg/L and the outlet water NH 3-N15-20 mg/L.
⑪The sewage treated by the ecological filter bed 13 enters an aquatic plant pond 14 from a bottom water distribution room 13-2 through an ecological filter bed water outlet pipe 13-10 and an aquatic plant pond water inlet pipe 14-1 connected with the ecological filter bed water outlet pipe, and passes through an aquatic ecosystem 14-2 (fish, mussel, snail, duck, goose and the like are cultured in the pond, and aquatic birds, protozoa, zooplankton, benthos, bacteria and algae form the aquatic ecosystem through a food chain and a water surface floating leaf plant, so that the water quality can be further purified, the water quality can be kept in a close state, suspended substances and algae in the water can be reduced, the COD (chemical oxygen demand) of the water purified by the aquatic plant sugar 14 can be lower than 100mg/L, NH3-N can be lower than 15mg/L, and SS (suspended substance) can be lower than 70mg/L, the indexes specified by the national Integrated wastewater discharge Standard (GB 3-1996) are reached, and the qualified water after the water is kept in the close state is treated by the plant pond water outlet pipe 14 3, entering a disinfection clean water tank 15, disinfecting by a disinfection device 15-1 open channel type ultraviolet sterilizer, and then discharging into a receiving water body by a clean water delivery pump 16 or recycling according to the requirement.
⑫Anoxic/aerobic (A/O)1、O2) The micro-porous aerator 9b-2, the rotational flow shearing aerator 9c-3 and the spiral micro-slit aeration hose 12b-5 arranged in the multifunctional composite biological reaction tank (HBR)12 arranged in the biological reaction tank 9 are connected with the fan 18 and the air main pipe 18-1 to provide dissolved oxygen DO provided by the biological reaction of each aerobic biological reaction tank.
Example 3
Livestock and poultry manure discharge treatment device of embodiment 1 and livestock and poultry manure treatment device of embodiment 2 are applied to treat the manure of a certain pig farm.
1. Water quantity and water quality
(1) Water volume pig farm sewage is mainly composed of pig manure (mainly solid body) and sewage (including residual pig manure urine) formed by flushing the pig farm, the pig farm is built on a scale of 30000 hurdles, the daily average individual manure yield is 2.17kg, the urine yield is 3.5kg, the water consumption is 12kg, the total water consumption is 360m3/d, the manure yield is 65.1t/d, the urine yield is 135t/d (contained in the total water consumption), and the design flow is 360m 3/d.
(2) The water quality BOD5 is less than or equal to 5000 mg/L; CODcr is less than or equal to 11500 mg/L; NH3-N is less than or equal to 400 mg/L; SS is less than or equal to 6000 mg/L.
(3) The discharged water quality after being treated by the discharge standard meets the first-grade water quality specified index in the national Integrated wastewater treatment discharge Standard (GB8978-1996), and the specific indexes are as follows: BOD5 is less than or equal to 30 mg/L; COD is less than or equal to 100 mg/L; NH3-N is less than or equal to 15 mg/L; SS is less than or equal to 70 mg/L.
2. The sewage treatment process flow is shown in figure 10
3. Main process design and operating parameters
(1) Biological pre-reaction regulating tank
① dissolved oxygen DO 0.2-0.5 mg/L
② residence time 8h
(2) Anaerobic baffle reaction tank
① dissolved oxygen DO less than or equal to 0.1mg/L
② residence time 48h
(3) Anoxic/aerobic (A/O)1、O2) Biological reaction tank
① sludge load of 0.16 kgBOD/kgMLVSSd
② nitrification load of sludge aerobic section (O1) and membrane aerobic section (O2) is 0.06-0.08 kgNO- 3-N/kgMLSS d
③ denitration load of anoxic section (A) is 0.10-0.12 kgNO- 3-N/kgMLSS d
④ reflux ratio, nitration liquid reflux ratio R is 4, sludge reflux ratio R is 1
⑤ SRT (sludge age: 28-32 days)
⑥ oxygen consumption rate of 7-9 mgO2/gMLSS h
⑦ turbidity of sludge 3000-5000 mg/L
⑧ anoxic/aerobic tank volume ratio 2:1
⑨ residence time 60h
⑩ oxygen demand of anoxic zone is 1.0-1.5 mg/L
(4) Ecological filter bed
① BOD5 load of 80-120 kg/hm 2d
② hydraulic load of 0.2-0.5 m3/m 2d
③ residence time 24h
④ the filtration rate is 2-4 m/h
(5) Aquatic plant pond
① BOD5 surface load of 20-30 kg/104m2d
② effective water depth of 1.5-2.0 m
③ BOD5 of less than 50mg/L
④ hydraulic retention time 3.5d
After the pig farm is processed by the process flow, the main process design and the design parameters of the utility model, BOD5 is less than or equal to 30 mg/L; COD is less than or equal to 90 mg/L; NH3-N is less than or equal to 15 mg/L; SS is less than or equal to 60mg/L, and reaches or is superior to the index of the first-grade water quality regulation in the national Integrated wastewater treatment discharge Standard (GB 8978-1996).
Claims (4)
1. The utility model provides a beasts and birds excrement discharge to reach standard processing apparatus which characterized in that: the device comprises a preprocessing unit: comprises a mixing and homogenizing tank, a pretreatment grid well lifting pump, a spiral extrusion separator, a primary sedimentation tank and a biological pre-reverseAdjusting the pool; a biochemical treatment unit: comprises an anaerobic baffle reaction tank, a hydrolysis acidification tank and an anoxic/aerobic (A/O)1、O2) A biological reaction tank, a secondary sedimentation tank, a sludge acidification tank and a multifunctional composite biological reaction tank (HBR); ecological degree of depth well processing unit: comprises an ecological filter bed, aquatic plants and a disinfection clean water tank.
2. The livestock and poultry manure discharge treatment device reaching the standard according to claim 1, wherein the pretreatment unit comprises the following components:
mixing and homogenizing the slurry in a tank: a feeding pipe of the mixing homogenizing pool is arranged at the inlet of the mixing homogenizing pool, a vertical stirrer is arranged in the mixing homogenizing pool, and a discharging pipe of the mixing homogenizing pool is arranged at the outlet of the mixing homogenizing pool;
pretreatment of the grid well: the net clearance of the middle grid bars in the pretreatment grid well is 30-35 mm, and the installation inclination angle of the middle grid is 75 degrees;
pretreatment of the grid well lift pump: the pretreatment grid well lifting pump is a slurry pump;
a screw extrusion separator: the spiral extrusion separator consists of a belt pulley, a differential mechanism, a bearing seat, an overflow plate, a rotary drum, a housing and an extrusion screw;
primary sedimentation tank: the primary sedimentation tank is a horizontal flow sedimentation tank, a primary sedimentation tank water inlet pipe is arranged at the front end of the tank, a primary sedimentation tank water collecting tank is arranged at the upper part of the tank, a primary sedimentation tank water outlet hole is arranged on the wall of the tank at the tail end of the tank, and a primary sedimentation tank bottom sludge discharge pipe is arranged at the bottom of the tank tail end;
a biological pre-reaction regulating tank: the diagonal line of the bottom of the biological pre-reaction regulating pool is provided with an underwater propeller at the bottom of the biological pre-reaction regulating pool, braid-type filler is arranged in the middle of the back half of the pool, the diameter of the braid-type filler is 40mm, the spacing between the braids is 100mm, the line spacing is 200mm, the height of a looped pile is 20mm, the specific surface area is 2000 m/m faces, and the pool wall at the tail end of the pool is provided with a water outlet pipe of the biological pre-reaction regulating pool; the biological pre-reaction regulating tank and the primary settling tank are combined, the middle part is separated by a partition wall, and the wall is provided with water through holes to keep the water through section.
3. The livestock and poultry manure discharge and treatment device reaching the standard according to claim 1, which is characterized in that: the biochemical treatment unit comprises the following contents:
anaerobic baffle reaction tank: the front end of the anaerobic baffle reaction tank is provided with an anaerobic baffle reaction tank water inlet pipe, a plurality of vertical baffle plates are respectively arranged in the direction vertical to the water flow, the included angle between the vertical plate of each vertical baffle plate and the bottom folded plate is 135 degrees, and each vertical baffle plate is a vertical guide plate, so that the reaction tank is divided into a plurality of reaction chambers connected in series; arranging soft fiber filler in a downflow reaction chamber, wherein a bundle of the soft fiber filler is 120mm long, a bundle pitch is 120mm, and specific surface area 1235 m/mn & pool is obtained by carrying out a method according to a 102 m method; no filler is arranged in the upflow reaction chamber, and the tail end of the anaerobic baffle reaction tank is provided with a water outlet hole of the anaerobic baffle reaction tank; the anaerobic baffle reaction tank is closed; a biogas discharge pipe is arranged at the top;
a hydrolysis acidification pool: the bottom of the hydrolysis acidification tank is provided with a bottom air stirrer main pipe and a plurality of air stirring branch pipes, and the tank wall at the tail end of the hydrolysis acidification tank is provided with a hydrolysis acidification tank water outlet pipe; the hydrolysis acidification tank and the anaerobic baffle reaction tank are built together, the middle part is separated by a partition wall, and the partition wall is provided with water through holes to keep a water through section;
anoxic/aerobic (A/O)1、O2) A biological reaction tank: the anoxic/aerobic (A/O)1、O2) The biological reaction tank is divided into an anoxic section, a sludge aerobic section and a membrane aerobic section; an anoxic section water inlet pipe is arranged at the upper part of the front end of the anoxic section, a carbon source supply pipe is arranged at the lower part of the front end, a nitrifying liquid return pipe is also arranged at the bottom of the tank, combined filler is arranged in the tank, the combined filler is 150mm in fiber ring sheets, and the distance between the sheets is 60 mm; the spacing is 150mm, the specific surface area is 2000 m/m, and water outlets of the anoxic section are formed on a partition wall spaced between the anoxic section and the mud aerobic section; an activated sludge return pipe is arranged at the bottom of the mud aerobic section, a middle and micro-pore aerator is also arranged at the bottom of the tank, the middle and micro-pore aerator is phi 215mm, the air supply amount is 1.5-3.0 m/h.S, the service area is 0.35-0.8 m/S, the oxygen utilization rate is more than or equal to 20 percent, and water outlet holes of the mud aerobic section are formed in a partition wall spaced between the mud aerobic section and the membrane aerobic section; a nitrifying liquid reflux pump and a nitrifying liquid reflux main pipe connected with the nitrifying liquid reflux pump are arranged at the bottom of the tail end of the membrane aerobic sectionThe bottom of the pond is also provided with a cyclone cutting aerator, the cyclone cutting aerator is 250 × 90 × 350mm, the air supply amount is 0.5-3.5 m/h.s, the service area is 0.3-1.0 m/s, the oxygen utilization rate is more than or equal to 21%, the pond is provided with elastic stereoscopic fillers, the diameters of elastic stereoscopic filler units are 173mm, each diameter is 0.5mm, the specific surface area is 300 m/m.s.the pond, the upper part of the pond wall at the rear end of the aerobic section of the membrane method is provided with a membrane method aerobic section water outlet pipe, and anoxic/aerobic (A/O) is performed (A/O is performed)1、O2) The biological reaction tank is of a combined construction type, the middle of the biological reaction tank is separated by two partition walls respectively, and water outlet holes are formed in the partition walls to keep the water passing section;
a secondary sedimentation tank, wherein the secondary sedimentation tank is an inclined tube sedimentation tank, a secondary sedimentation tank water inlet pipe is arranged at the front end of the secondary sedimentation tank, a secondary sedimentation tank sludge discharge pipe is arranged at the bottom of the secondary sedimentation tank, an inclined tube bracket and an inclined tube are arranged in the secondary sedimentation tank, the inclined tube bracket is ∠ 50 × 5mm angle steel, the ethylene-propylene copolymerization inclined tube has the specifications of d =100mm, theta =60 degrees and inclined tube l =1000mm, a secondary sedimentation tank sludge outlet hole is formed in a partition wall between the secondary sedimentation tank and the sludge acidification tank, and a secondary sedimentation tank water outlet pipe is arranged at the upper part of the tail end of the secondary sedimentation tank;
a sludge acidification tank: a stirrer at the bottom of the sludge acidification tank is arranged at the bottom of the sludge acidification tank in a diagonal line manner, and a sludge outlet pipe is arranged at the upper part of the wall of the tail-end tank; the secondary sedimentation tank and the sludge acidification tank are of a combined construction type, the middle part of the secondary sedimentation tank and the sludge acidification tank are separated by a partition wall, and the middle lower part of the partition wall is provided with a secondary sedimentation tank sludge outlet hole for keeping a sludge cross section;
the multifunctional composite biological reaction tank (HBR) is divided into a denitrification section and a nitrification section, the denitrification section has 2/3 in volume, a denitrification section water inlet pipe is arranged at the upper part of the tank wall at the front end of the denitrification section, a nano polyurethane composite filler A is arranged in the tank, suspended upper and lower steel wire meshes are arranged in the tank, filler is filled in a compartment formed by the upper and lower steel wire meshes, the filling rate is 40%, the porosity of the filler is 95%, the filler is 30mm cubic, and the specific surface area of the filler is 3.6 × 103Carrying out m/m heavy planting, wherein the microbial load is more than or equal to 10 g/L; a water outlet hole at the lower part of the denitrification section is formed in a partition wall between the denitrification section and the nitrification section, and a high-quality carbon source supply pipe is arranged at the top of the denitrification section; the bottom of the nitrification section is provided with a spiral micro-slit aeration hose, and a main pipe of the aeration hose is connected with nitrificationLiquid reflux stripping tube; a nano polyurethane composite filler B is arranged in the pool, suspended upper and lower steel wire meshes are arranged in the pool, and a compartment formed by the upper and lower steel wire meshes is filled with the filler B, wherein the filling rate is 60%; a nitrification section water outlet pipe is arranged at the upper part of the tank wall at the tail end of the nitrification section; an activated sludge replenishing pipe.
4. The livestock and poultry manure discharge treatment device reaching the standard according to claim 1, wherein the ecological advanced treatment unit comprises the following contents:
the ecological filter bed is characterized in that an ecological filter bed water inlet pipe is arranged on the upper portion of a front end pond wall of the ecological filter bed, a filter plate and filter head assembly is arranged in a space 350mm from the bottom of the ecological filter bed to the top, the filter plate is made of reinforced concrete, the filter plate is × mm long, × mm wide and 980 × mm thick and × mm long, a long handle filter head is arranged on the filter plate, the filter plate and filter head assembly is phi × H =60 × mm, and the bottom space forms a bottom water distribution room;
an aquatic plant pond: the front end of the aquatic plant pond is provided with an aquatic plant pond water inlet pipe; the inside of the aquatic plant pond is divided into galleries with the width of about 6m by using brick walls, so that water flow runs in a single direction, the contact between the aquatic plants and sewage is increased, the length of the aquatic plant pond is about 50m, the width of the aquatic plant pond is about 24m, the aquatic plant pond is divided into four galleries, the effective water depth is about 1.5m, and the hydraulic retention time is 3.5 d; a water ecosystem is constructed at the bottom of the aquatic plant pond, fish, mussel, snail, duck, goose and the like are cultured in the pond, submerged plants at the bottom are golden fish algae, the aquatic water poultry, protozoa, zooplankton, benthonic animals, bacteria and algae form a complex water ecosystem through a food chain and a water surface floating leaf plant water lily, and an aquatic plant pond water outlet pipe is arranged at the tail end of the aquatic plant pond;
disinfecting the clean water tank: a disinfection device is arranged beside the disinfection clean water tank, and the disinfection device is an open channel type ultraviolet sterilizer; the tail part of the disinfection clean water tank is provided with a clean water delivery pump, and water after reaching the standard is extracted and discharged or recycled according to the requirement.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111943432A (en) * | 2020-08-11 | 2020-11-17 | 湖南艾布鲁环保科技股份有限公司 | Lake or reservoir drinking water source pollution prevention and control system and method |
| CN112111381A (en) * | 2020-09-23 | 2020-12-22 | 广州海研生物科技有限公司 | Biological carrier device |
| CN112661263A (en) * | 2020-11-30 | 2021-04-16 | 遵义师范学院 | Circulating water biological anaerobic degradation treatment method for cultivated small-sized rare fishes |
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2019
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111943432A (en) * | 2020-08-11 | 2020-11-17 | 湖南艾布鲁环保科技股份有限公司 | Lake or reservoir drinking water source pollution prevention and control system and method |
| CN111943432B (en) * | 2020-08-11 | 2021-08-24 | 湖南艾布鲁环保科技股份有限公司 | Lake or reservoir drinking water source pollution prevention and control system and method |
| CN112111381A (en) * | 2020-09-23 | 2020-12-22 | 广州海研生物科技有限公司 | Biological carrier device |
| CN112661263A (en) * | 2020-11-30 | 2021-04-16 | 遵义师范学院 | Circulating water biological anaerobic degradation treatment method for cultivated small-sized rare fishes |
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