CN111285553A - Ship black ash water centralized treatment device and treatment method - Google Patents
Ship black ash water centralized treatment device and treatment method Download PDFInfo
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- CN111285553A CN111285553A CN202010198315.7A CN202010198315A CN111285553A CN 111285553 A CN111285553 A CN 111285553A CN 202010198315 A CN202010198315 A CN 202010198315A CN 111285553 A CN111285553 A CN 111285553A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/308—Biological phosphorus removal
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
Abstract
The invention provides a centralized treatment device and a centralized treatment method for ship black grey water. The reaction tank is internally provided with a plurality of anoxic zones and aerobic zones which are sequentially communicated, suspension ball fillers are filled in the anoxic zones and the aerobic zones, each aerobic zone is provided with an aeration device, each anoxic zone is provided with a stirring device, the upper part of the last aerobic zone is provided with a water outlet, the water outlet of the reaction tank is connected with a water inlet of a vertical sedimentation tank, the sedimentation tank is provided with a reflux pump, the inlet end of the reflux pump is connected with the bottom of a V-shaped funnel, the outlet end of the reflux pump is connected with the first anoxic zone of the reaction tank, ship black ash is introduced into the upper part of the first anoxic zone and the bottoms of other anoxic zones through a water inlet pump, the suspension fillers in the aerobic zone account for 35% of the total volume of the aerobic zone, and the suspension fillers in the anoxic zone account for 30. The invention has better and more stable treatment effect on the ship domestic sewage, simple structure, durable equipment, automatic operation and good effluent quality, and is very suitable for the ship domestic sewage treatment.
Description
Technical Field
The invention relates to a sewage treatment device and a sewage treatment method, in particular to a centralized treatment device and a treatment method for ship black grey water.
Background
According to the International Maritime Organization (IMO) definition of ship domestic sewage, it refers to the excrement and other waste discharged from urinals and toilets in any form; hand washing, face washing, bathing, and discharge from medical offices including pharmacies and the like; effluent from a location where animals are raised aboard a ship; and other waste effluents mixed with any of the above forms of drainage. The ship domestic sewage has part of similarity with the common urban domestic sewage, and the ship domestic sewage is obviously different from the common urban domestic sewage due to the particularity of the environment. The main differences of ship domestic sewage compared with municipal domestic sewage include: (1) the salt content, the load and the suspended matters are higher; (2) compared with the city, the difference of the population quantity of the ship is obvious, and a small number of people can cause larger impact load, so that the produced sewage has great fluctuation in both water quality and water quantity; (3) the space on the ship is small, so that the space for the sewage treatment system is relatively narrow, and the structure of the ship domestic sewage treatment system is required to be more compact; (4) in order to reduce the floor area and improve the space utilization rate of the ship, the traditional gravity black water collection mode is upgraded to a vacuum mode by the ship, and the organic matters in the black water collected and stored in the vacuum mode can reach 3500 mg/L; (4) the unavoidable swing on the ship can also cause the solid-liquid separation effect to be not ideal, and the effluent quality is not stable enough. Aiming at the different points of ship domestic sewage and common urban domestic sewage, in order to enable the ship domestic sewage to meet more and more strict discharge standards, the existing sewage treatment method needs to be further improved and enhanced.
The traditional A/O process is a common form in the sewage treatment technology by activated sludge, has the advantages of high-efficiency biological denitrification efficiency, simple structure, high automation degree and the like, but compared with other denitrification and dephosphorization processes, the traditional A/O process has the advantages that the dephosphorization effect is difficult to improve, the sludge growth has a certain limit, and the sludge growth is difficult to improve; the denitrification effect is difficult to further improve; the effluent can not reach the national first grade A standard. Moreover, according to the treatment effect of the domestic sewage treatment device applied to the ship at present, the effluent quality is poor due to poor precipitation effect caused by the shaking and bumping of the ship in the biological treatment.
Disclosure of Invention
The invention aims to provide a device for centralized treatment of ship black grey water, which has low manufacturing cost and operation cost and good treatment effect. The invention also aims to provide a centralized treatment method of the ship black grey water.
The device for the centralized treatment of the black grey water of the ship comprises a reaction tank, a sedimentation tank, a water inlet pump, a reflux pump and an aeration pump, the reaction tank in set up multiunit anoxic zone and the aerobic zone that communicates in proper order, the suspension ball filler is filled in anoxic zone and the aerobic zone, aerobic zone at all levels all is provided with aeration equipment, anoxic zone at all levels all is provided with agitating unit, the upper portion in last group aerobic zone is provided with the delivery port, the reaction tank delivery port is connected with vertical sedimentation tank water inlet, sedimentation tank V type funnel bottom sets up back flow and valve, the sedimentation tank sets up the backwash pump, the backwash pump entrance point links to each other with V type funnel bottom, the exit end links to each other with the first group anoxic zone of reaction tank, boats and ships black ash passes through the intake pump and introduces the upper portion in first group anoxic zone and the bottom in other anoxic zones, the suspension filler in the aerobic zone accounts for aerobic zone total volume 35%, the suspension filler in the anoxic zone accounts for anoxic zone total volume 30%.
The present invention may further comprise:
1. the suspension ball filler comprises a shell, and a biological rope and a pall ring are arranged in the shell.
2. The casing by macromolecular polymer mould plastics form, the sphere be the latticed, pall ring be the polypropylene material, biological rope adopt elastic material and soft material mixed weaving mode, the line is walked and is adopted the snake braid to weave the preparation and form, suspension ball diameter 8 cm.
3. A shaft lever is arranged in the shell, plastic buckles are arranged on the shaft lever, a plurality of bundles of biological ropes are fixed on each buckle, and the biological ropes are made of hydroformylation vinylon filaments.
4. Aeration equipment's aeration pump pass through aeration pipe network and aeration head intercommunication, the aeration head includes aeration membrane, supporting tray and gland, and aeration membrane is the spherical crown shape, aeration membrane includes protruding work portion and connecting portion, connecting portion with the edge connection of protruding work portion, the connecting portion cover is located on the supporting tray, protruding work portion is to keeping away from the direction of supporting tray is protruding, the gas outlet gap has been seted up at the middle part of protruding work portion, the supporting tray with the gland is connected, the gland with aeration pipe network intercommunication, the gland with the middle part of supporting tray all is provided with the air vent.
5. Three groups of anoxic zones and three groups of aerobic zones which are communicated in sequence are arranged in the reaction tank.
The centralized treatment method of the ship black grey water comprises the following steps:
(1) water inflow: the water inlet pump pumps the ship black ash sewage into a first stage anoxic reaction zone, a second stage anoxic reaction zone and a third stage anoxic reaction zone in the main reaction tank through an original water inlet pipe; after passing through the first-stage anoxic reaction zone, the sewage flows out of the lower part of the side wall of the tail end to the first-stage aerobic reaction zone; the sewage overflows from the upper end of the side wall of the first-stage aerobic zone to the second-stage anoxic zone and then sequentially flows through the second-stage aerobic zone, the third-stage anoxic zone and the third-stage aerobic zone; a water outlet hole is arranged above the side wall of the tail end of the reaction tank and is connected with the sedimentation tank; the sludge at the bottom of the sedimentation tank flows back to the bottom end of the first-stage anoxic reaction zone through a sludge reflux pump;
(2) stirring: in the running process of the equipment, electric rotor stirrers in the anoxic zone of the reaction tank are all kept in a working state;
(3) aeration: in the operation process of the equipment, an aeration system at the bottom of an aerobic zone of the reaction zone automatically aerates;
(4) and (3) precipitation: standing and precipitating the sewage after the sewage is treated in the reaction tank in a precipitation tank, and naturally precipitating the activated sludge;
(5) draining: discharging the treated sewage through an overflow weir above the sedimentation tank, and finishing the sewage treatment process;
the proportion of the ship black ash sewage entering the first, second and third anoxic zones is 2: 1: 1.
the centralized treatment method of the ship black grey water can also comprise the following steps:
1. the operation cycle time is 8 h.
2. The aeration is uninterrupted aeration, and the aeration intensity is 0.8m3/h。
3. The ship black ash water inlet and the activated sludge return are carried out simultaneously.
4. The anoxic zones are provided with electric stirrers with the rotating speed of 0-3000 r/min.
In order to solve the problems of high manufacturing cost and high operation cost of a membrane in the traditional membrane bioreactor process, the invention provides a device and a method for centralized treatment of ship black grey water by using multi-point water inlet A/O + SBF filler.
On the basis of the traditional A/O process, the invention increases the anoxic-aerobic stage number, and utilizes a multipoint water inlet mode to distribute and dilute the return sludge, so that the average sludge concentration of the reaction tank is increased, the denitrification efficiency is improved, the internal reflux is cancelled, the energy consumption is reduced, and the effluent quality is further improved.
The biological filler in the reaction tank is a built-in suspension ball composite filler, the filler is composed of a grid spherical shell and a built-in carrier, the shell is formed by injection molding of high molecular polymers, the spherical surface is in a grid shape, the built-in carrier is made of pall rings, biological ropes and the like, the former is that a shaft rod is arranged in the shell, two plastic buckles are arranged on the shaft rod, each buckle is fixedly provided with 6 bundles of hydroformylation vinylon fibers, the fibers can freely swing along with water flow in a water body, and the latter is that polyethylene is used as a raw material, the polyethylene is pulled into thin flat fibers and then is filled into the shell in a shaving shape and a lump, and the grid holes have certain mechanical strength and cannot be blocked by falling biological films. The specific surface area is increased by adding the suspension ball filler, the biomass in unit volume is increased, the microbial film growing on the surface of the filler is in a logarithmic growth period of high activity due to fluidization collision and aeration scouring of the filler, and the treatment efficiency is increased.
The device for the concentrated treatment of the ship black grey water by the multi-point water inlet A/O + SBF filler comprises a reaction tank, a vertical flow sedimentation tank, a water inlet pump, a reflux pump and an aeration pump. Three groups of anoxic zones and aerobic zones which are communicated in sequence are arranged in the reaction tank, suspension ball fillers are uniformly distributed in the reaction tank, and biological ropes and pall rings are arranged in the suspension balls; the three-stage aerobic zones in the reaction tank are all provided with aeration devices, and the aeration systems comprise aeration heads and aeration pumps; the three-stage anoxic zone is provided with a stirring device, and the stirring device comprises an electric rotor stirrer and a screen display controller; the upper part of the last group of aerobic zones is provided with a water outlet which is positioned on the side wall of the terminal of the reaction tank, the water outlet of the reaction tank is connected with the water inlet of the vertical sedimentation tank through a hose, the water inlet is positioned on the side wall of the head end of the sedimentation tank, and the side wall of the terminal is provided with a water outlet; the sedimentation tank V type funnel bottom sets up back flow and valve, and the sedimentation tank sets up the backwash pump, and the backwash pump entrance point links to each other with V type funnel bottom, and the exit end links to each other with the first group anoxic zone of reaction tank, and the suspension in the aerobic zone of reaction tank packs and accounts for aerobic zone total volume 35%, and the suspension in the anoxic zone packs and accounts for anoxic zone total volume 30%.
The invention also includes:
1. the diameter of the suspension ball is 8cm, the suspension ball is made of corrosion-resistant, high-temperature-resistant and high-light polypropylene materials, and the pall ring in the filler is made of polypropylene materials, and the suspension ball is characterized by large flux, small resistance, high separation efficiency and large operation elasticity; the biological rope is made by weaving elastic materials and soft materials in a mixed mode, and the routing is made by weaving a snake-shaped braid; has the characteristics of large specific surface area, high void ratio, quick film formation starting and the like.
2. The disc type microporous membrane aerator is arranged in the middle at the bottom of the aerobic zone of the reaction tank, is made of ABS engineering plastic, has the diameter of 100mm, and has the characteristics of light weight, high strength, good hydrophilicity, acid and alkali resistance, long service life, firmness, durability and the like. Aeration rate of disc type microporous membrane aerator is 0.8m3H, the aeration area of a single aerator is 0.5m2。
3. The three reaction anoxic zones are provided with electric stirrers at the rotating speed of 0-3000 r/min; the aerobic zone disc type microporous membrane aerator is provided with an aeration pump, the power is 30W, the pressure is 15KPa, and the maximum aeration quantity is 50L/min.
The invention not only has the advantages of the traditional A/O sewage treatment process, but also has the characteristics of saving carbon sources, improving the sludge concentration and the denitrification efficiency and the like. The quality of the effluent can reach the national first-level A standard, and the operation cost is effectively reduced on the basis of ensuring the quality of the effluent to reach the standard.
Drawings
FIG. 1 is a schematic structural diagram of a device for centralized treatment of ship black grey water by using a multi-point water inlet A/O + SBF filler.
FIG. 2 is an exploded schematic view of an aeration head at the bottom of the aerobic zone of the main reaction tank.
Detailed Description
The main reaction tank is provided with a first-stage anoxic reaction zone 4, a first-stage aerobic reaction zone 5, a second-stage anoxic reaction zone 6, a second-stage aerobic reaction zone 7, a third-stage anoxic reaction zone 8 and a third-stage aerobic reaction zone 9 which are communicated in sequence; the sludge in the main reaction tank flows into a V-shaped vertical flow sedimentation tank 26 through a sludge outlet pipe 22, a vertical flow sedimentation pipe 24 and a reflecting plate 25; the settled sludge at the bottom of the V-shaped vertical sedimentation tank 26 flows back to the two-part water inlet opening 15 at the bottom end of the first-stage anoxic reaction zone 4 through the sludge reflux pump 11 and the sludge reflux pipe 19; the supernatant after being precipitated in the V-shaped vertical sedimentation tank 26 completes the whole sewage treatment process through the water outlet pipe 23; disc type microporous membrane aerators 14 are arranged at the bottom ends of the first-stage aerobic reaction zone 5, the second-stage aerobic reaction zone 7 and the third-stage aerobic reaction zone 9; the electric rotor stirrers 3 are arranged in the first-stage anoxic reaction zone 4, the second-stage anoxic reaction zone 6 and the third-stage anoxic reaction zone 8.
The device for the concentrated treatment of the ship black grey water by the multipoint inflow A/O + SBF filler has the advantages that as the main reaction tank is provided with the continuous three-stage anoxic/aerobic reaction zones, the impact load capacity of the process for resisting inflow water quality and inflow water quantity is strong, and the operation mode is flexible; the flocculating bacteria grow well and can improve the sludge activity. The returned sludge is mixed and contacted with the entering high-concentration fresh sewage in the first anoxic reaction zone 4, so that the microbial population is always in a logarithmic proliferation phase, the condition that the microbes compete for survival in a high-concentration and high-load environment is created, and the soluble and easily degradable substances in the polluted sewage are quickly removed, so that the special dominant microbial population suitable for the water quality and the water quantity is selected, the excessive increment of filamentous bacteria can be effectively inhibited, the sludge bulking phenomenon is avoided, and the stability of the system is improved; and because a large amount of carbon sources are consumed in the anoxic section, the growth of nitrobacteria in the aerobic zone is facilitated; the organic substrates are uniformly distributed along the length of the tank, the load is balanced, and the effluent quality still has good stability and strong impact load resistance under the condition that the influent quality has large fluctuation; greatly improves the removal rate of organic matters, simultaneously, the nitrification and denitrification reactions in the reactor are also fully carried out, and the nitrogen and phosphorus removal effect is good.
Specifically, the water inlet peristaltic pump 1 pumps raw sewage into water inlet holes on the side walls of a first stage anoxic reaction zone 4, a second stage anoxic reaction zone 6 and a third stage anoxic reaction zone 8 in the main reaction tank through a raw water inlet pipe 18; after passing through the first-stage anoxic reaction zone 4, the sewage flows out to the first-stage aerobic reaction zone 5 from the lower part of the side wall of the tail end; further, sewage overflows from the upper end of the side wall of the first-stage aerobic zone 5 to the second-stage anoxic zone 6 and then sequentially flows through the second-stage aerobic zone 7, the third-stage anoxic zone 8 and the third-stage aerobic zone 9; a water outlet is arranged above the side wall of the tail end of the main reaction tank and is connected with a V-shaped vertical sedimentation tank 26 through a sludge outlet pipe 22; the settled sludge at the bottom of the V-shaped vertical sedimentation tank 26 flows back to the two-part water inlet opening 15 at the bottom end of the first-stage anoxic reaction zone 4 through the sludge reflux pump 11 and the sludge reflux pipe 19; the built-in suspension ball composite filler 27 is added into the main reaction tank, and the raw sewage fully contacts with the built-in suspension ball composite filler 27 in the process of flowing through the main reaction tank.
Further, the aeration device comprises an aeration pump 10 and a plurality of disc type microporous membrane aerators 14, wherein the aeration pump 10 is sequentially connected with the disc type microporous membrane aerators 14 through aeration pipes 21; a plurality of disc type microporous membrane aerators 14 are evenly distributed at the bottom of the aerobic zone of the main reaction tank. The disc type microporous membrane aerator 14 can ensure the uniformity and sufficiency of aeration quantity.
Further, as shown in fig. 2, each disc type microporous membrane aerator 14 includes an aeration membrane 28, a supporting tray 29 and a pressing cover 30, the aeration membrane 28 is in a spherical crown shape, the aeration membrane 28 includes a convex working portion 33 and a connecting portion 34, the connecting portion 34 is connected with the edge of the convex working portion 33, the connecting portion 34 is sleeved on the supporting tray 29, the convex working portion 33 protrudes in a direction away from the supporting tray 29, an air outlet slit 31 is opened in the middle of the convex working portion 33, the supporting tray 29 is connected with the pressing cover 30, the pressing cover 30 is communicated with an aeration pipe network, and vent holes 32 are respectively arranged in the middle of the pressing cover 30 and the supporting tray 29.
During operation, aeration pump 10 lets in the air to aeration pipe 21, and the air gets into in disk micropore diaphragm aerator 14 through aeration pipe 21, and the play gas seam 31 on the protruding work portion 33 opens, aerates sewage, and protruding work portion 33 receives the pressure that comes from the top water and gives after the aeration finishes, because aeration diaphragm 28 itself has elasticity, gives vent to anger seam 31 closed for water in first order aerobic zone 5, second level aerobic zone 7, the third level aerobic zone 9 can not get into in aeration pipe 21.
Further, the lower portion of the outer wall of the supporting tray 29 is provided with an external thread 35, the lower portion of the inner wall of the pressing cover 30 is provided with an internal thread 37, and the external thread 35 and the internal thread 37 are matched with each other so that the supporting tray 29 is detachably connected with the pressing cover 30. The threaded connection facilitates the disassembly of the disc-type microporous membrane aerator 14.
Further, the inlet peristaltic pump 1 is connected with a timer (not shown) for setting the inlet water time. The water inlet time is preset on the timer, and after the water inlet time reaches, the timer controls the water inlet peristaltic pump 1 to stop water inlet, so that the labor cost waste caused by manual monitoring can be avoided.
Furthermore, the device for the centralized treatment of the ship black grey water by the multipoint water inflow A/O + SBF filler also comprises a controller (not shown), a timer (not shown), a water inflow peristaltic pump 1 and an aeration device are electrically connected with the controller, a sludge reflux pump 11 is arranged on a sludge reflux pipe 19 of the first-stage anoxic reaction zone 4, which is connected with the V-shaped vertical sedimentation tank 26, the sludge reflux pump 11 is electrically connected with the controller, the first-stage anoxic reaction zone 4, the second-stage anoxic reaction zone 6 and the third-stage anoxic reaction zone 8 are respectively provided with an electronic rotary stirrer 3, and the three electronic rotary stirrers 3 are electrically connected with the controller.
The arrangement of the electronic rotary stirrer 3 can accelerate the sewage treatment process. The controller is arranged in an operation table (not shown) of the sewage treatment system, the time of the controller can be set by the timer, and the start and stop of the sludge reflux pump 11, the aeration pump 10 and the electronic rotating stirrer 3 can be controlled, so that the whole sewage treatment process is intelligent, manual independent control is not needed, and the labor cost can be effectively saved.
The built-in suspension ball composite filler 27 is composed of a grid spherical shell and a built-in carrier, the shell is formed by injection molding of high polymer, the spherical surface is in a grid shape, the built-in carrier is made of pall rings and biological ropes, a shaft rod is arranged in the shell, two plastic buckles are arranged on the shaft rod, each buckle is fixed with 6 bundles of hydroformylation vinylon fibers, the fibers can freely swing along with water flow in a water body, the biological ropes are formed by pulling polyethylene serving as a raw material into thin flat fibers and then filling the thin flat fibers into the shell in a shaving shape, and the grid holes are moderate in size, have certain mechanical strength and cannot be blocked by falling biological membranes.
The water flow of each part of the suspension ball filling area can play a near-wall hydraulic effect, the speed difference between water flow layers is increased, the speed gradient is improved, and the high-efficiency hydraulic function of micro-vortex is embodied. The filler has the performance of adsorbing active microflocs; the added filler greatly improves the concentration of the flocs and increases the collision probability of the flocs. The active flocs adsorbed and accumulated on the surface of the filler are contacted with destabilized colloidal fine particles in raw water, so that the contact flocculation effect is achieved, an adsorption layer on the surface of the filler can be continuously updated, and the activity is always kept in the dynamic balance of adsorption and shedding. The specific surface area is increased by adding the suspension ball filler 27, the biomass in unit volume is increased, the microbial film growing on the surface of the filler is subjected to fluidization collision and aeration scouring due to the filler, so that the microorganisms are in a high-activity logarithmic growth period, and the treatment efficiency is increased. The suspension ball filler 27 adopted in the invention is added into an anoxic reaction zone and an aerobic reaction zone according to the proportion according to the difference of the reaction zones; the aerobiotic zone is added with the suspension ball filler 27 accounting for 35 percent of the total volume of the tank volume, and the anoxic zone is added with the suspension ball filler 27 accounting for 30 percent of the total volume of the tank volume.
The suspended filler in the aerobic zone of the reaction tank accounts for 35 percent of the total volume of the aerobic zone, and the suspended filler in the anoxic zone accounts for 30 percent of the total volume of the anoxic zone;
the diameter of the suspension ball is 8cm, the suspension ball is made of corrosion-resistant, high-temperature-resistant and high-light polypropylene materials, and the pall ring in the filler is made of polypropylene materials, and the suspension ball is characterized by large flux, small resistance, high separation efficiency and large operation elasticity; the biological rope is made by weaving elastic materials and soft materials in a mixed mode, and the routing is made by weaving a snake-shaped braid; has the characteristics of large specific surface area, high void ratio, quick film formation starting and the like.
The bottom of the aerobic zone of the reaction tank is provided with the disc type microporous membrane aerator in the middle, the material is ABS engineering plastic, the diameter is 100mm, the disc type microporous membrane aerator has the characteristics of light weight, high strength, good hydrophilicity, acid and alkali resistance, long service life, firmness, durability and the like, and the aeration quantity of the disc type microporous membrane aerator is 0.8m3H, the aeration area of a single aerator is 0.5m2(ii) a The three reaction anoxic zones are provided with electric stirrers at the rotating speed of 0-3000 r/min; an aerobic zone disc type microporous membrane aerator is provided with an aeration pump, the power is 30W, the pressure is 15KPa, and the maximum aeration quantity is 50L/min; not only has the advantages of the traditional A/O sewage treatment process, but also has the characteristics of saving carbon sources, improving the sludge concentration and the denitrification efficiency and the like. The quality of the effluent can reach the national first-level A standard, and the operation cost is effectively reduced on the basis of ensuring the quality of the effluent to reach the standard.
And electric rotor stirrers are arranged in the three-stage anoxic zones in the main reaction tank.
Disc type microporous membrane aerators are arranged in the three-stage aerobic zones in the main reaction tank.
The air pump is communicated with the aeration head through an aeration pipe network, the aeration head comprises an aeration membrane, a supporting tray and a gland, the aeration membrane is in a spherical crown shape, the aeration membrane comprises a convex working part and a connecting part, the connecting part is connected with the edge of the convex working part, the connecting part is sleeved on the supporting tray, the convex working part protrudes towards the direction far away from the supporting tray, the middle part of the convex working part is provided with an air outlet seam, the supporting tray is connected with the gland, the gland is communicated with the aeration pipe network, and the middle parts of the gland and the supporting tray are both provided with air vents;
the built-in suspension ball composite filler occupying 35% of the volume of the aerobic zone and 30% of the volume of the anoxic zone consists of a grid spherical shell and a built-in carrier, wherein the shell is formed by injection molding of high polymer, the spherical surface is in a grid shape, the built-in carrier is made of pall rings and biological ropes, the former is that a shaft rod is arranged in the shell, two plastic buckles are arranged on the shaft rod, each buckle is fixedly provided with 6 bundles of hydroformylation vinylon fibers, the fibers can freely swing along with water flow in a water body, and the latter is that polyethylene is used as a raw material, the polyethylene is pulled into thin flat fibers and then is filled into the shell in a shaving shape to form a cluster, and grid holes are moderate in size, have certain mechanical strength and cannot be blocked by falling biological membranes.
The method for treating the ship black grey water in a centralized way by using the A/O + SBF fillers with multi-point water inlet comprises the following steps;
(1) water inflow: the raw sewage is pumped into water inlet holes on the side walls of a first stage anoxic reaction zone, a second stage anoxic reaction zone and a third stage anoxic reaction zone in the main reaction tank by a water inlet peristaltic pump through a raw water inlet pipe; after passing through the first-stage anoxic reaction zone, the sewage flows out of the lower part of the side wall of the tail end to the first-stage aerobic reaction zone; further, sewage overflows from the upper end of the side wall of the first-stage aerobic zone to the second-stage anoxic zone and then sequentially flows through the second-stage aerobic zone, the third-stage anoxic zone and the third-stage aerobic zone; a water outlet hole is arranged above the side wall of the tail end of the main reaction tank and is connected with the sedimentation tank through a sludge outlet pipe; the sludge at the bottom of the sedimentation tank flows back to the bottom end of the first-stage anoxic reaction zone through a sludge reflux pump;
(2) stirring: in the running process of the equipment, electric rotor stirrers in the anoxic zone of the main reaction tank are all kept in a working state;
(3) aeration: in the operation process of the equipment, an aeration system at the bottom of an aerobic zone of the main reaction zone automatically aerates;
(4) and (3) precipitation: standing and precipitating the sewage treated by the main reaction tank in a vertical flow type precipitation tank, and naturally precipitating the fire activated sludge;
(5) draining: and discharging the treated sewage through an overflow weir above the vertical flow sedimentation tank, and finishing the sewage treatment process.
The operation cycle time of the device for the concentrated treatment of the ship black grey water by the multi-point water inlet A/O + SBF filler is 8 hours.
The water inflow and activated sludge return are performed simultaneously.
The aeration is uninterrupted aeration, and the aeration intensity is 0.8m3/h。
The proportion of the raw sewage entering the first, second and third anoxic zones is 2: 1: 1.
it should be noted that the type and proportion of the internal filler of the suspension ball composite filler 27 provided by the invention are reasonably adjusted according to actual tests, so that the suspension ball composite filler 27 is suspended in the sewage and fully contacts with the activated sludge, and the sewage treatment effect is better achieved.
In summary, according to the device for the centralized treatment of the ship black grey water by the multipoint inflow A/O + SBF filler, provided by the invention, as the main reaction tank is continuously provided with the three-stage anoxic/aerobic activated sludge reaction zones and the multipoint inflow operation mode is adopted, the device for the centralized treatment of the ship black grey water by the multipoint inflow A/O + SBF filler has the advantages of the traditional A/O sewage treatment process and the vertical flow sedimentation tank, the effluent quality is good, the utilization rate of a carbon source is high, and the treatment cost is not excessively increased under the condition of ensuring the good effluent quality.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a black buck centralized processing's of boats and ships device, includes reaction tank, sedimentation tank, intake pump, backwash pump and aeration pump, the reaction tank in set up multiunit anoxic zone and the aerobic zone that communicates in proper order, the suspension ball that fills packs in anoxic zone and the aerobic zone, aerobic zone all is provided with aeration equipment at all levels, anoxic zone all is provided with agitating unit at all levels, the upper portion in last group aerobic zone is provided with the delivery port, the reaction tank delivery port is connected with the vertical flow formula sedimentation tank water inlet, sedimentation tank V type funnel bottom sets up back flow and valve, the sedimentation tank sets up the backwash pump, the backwash pump entrance point links to each other bottom V type funnel, the exit end links to each other with the first group anoxic zone of reaction tank, characterized by: the ship black ash is introduced into the upper part of the first group of anoxic zones and the bottoms of other anoxic zones through a water inlet pump, the suspended filler in the aerobic zones accounts for 35% of the total volume of the aerobic zones, and the suspended filler in the anoxic zones accounts for 30% of the total volume of the anoxic zones.
2. The apparatus for centralized treatment of ship black grey water according to claim 1, wherein: the suspension ball filler comprises a shell, and a biological rope and a pall ring are arranged in the shell.
3. The apparatus for centralized treatment of ship black grey water according to claim 2, wherein: the casing by macromolecular polymer mould plastics form, the sphere be the latticed, pall ring be the polypropylene material, biological rope adopt elastic material and soft material mixed weaving mode, the line is walked and is adopted the snake braid to weave the preparation and form, suspension ball diameter 8 cm.
4. The apparatus for centralized treatment of ship black grey water according to claim 3, wherein: a shaft lever is arranged in the shell, plastic buckles are arranged on the shaft lever, a plurality of bundles of biological ropes are fixed on each buckle, and the biological ropes are made of hydroformylation vinylon filaments.
5. The apparatus for concentrated treatment of ship black grey water according to any one of claims 1 to 4, wherein: aeration equipment's aeration pump pass through aeration pipe network and aeration head intercommunication, the aeration head includes aeration membrane, supporting tray and gland, and aeration membrane is the spherical crown shape, aeration membrane includes protruding work portion and connecting portion, connecting portion with the edge connection of protruding work portion, the connecting portion cover is located on the supporting tray, protruding work portion is to keeping away from the direction of supporting tray is protruding, the gas outlet gap has been seted up at the middle part of protruding work portion, the supporting tray with the gland is connected, the gland with aeration pipe network intercommunication, the gland with the middle part of supporting tray all is provided with the air vent.
6. The apparatus for concentrated treatment of ship black grey water according to any one of claims 1 to 4, wherein: three groups of anoxic zones and three groups of aerobic zones which are communicated in sequence are arranged in the reaction tank.
7. The apparatus for centralized treatment of ship black grey water according to claim 5, wherein: three groups of anoxic zones and three groups of aerobic zones which are communicated in sequence are arranged in the reaction tank.
8. A centralized treatment method of ship black grey water comprises the following steps:
(1) water inflow: the water inlet pump pumps the ship black ash sewage into a first stage anoxic reaction zone, a second stage anoxic reaction zone and a third stage anoxic reaction zone in the main reaction tank through an original water inlet pipe; after passing through the first-stage anoxic reaction zone, the sewage flows out of the lower part of the side wall of the tail end to the first-stage aerobic reaction zone; the sewage overflows from the upper end of the side wall of the first-stage aerobic zone to the second-stage anoxic zone and then sequentially flows through the second-stage aerobic zone, the third-stage anoxic zone and the third-stage aerobic zone; a water outlet hole is arranged above the side wall of the tail end of the reaction tank and is connected with the sedimentation tank; the sludge at the bottom of the sedimentation tank flows back to the bottom end of the first-stage anoxic reaction zone through a sludge reflux pump;
(2) stirring: in the running process of the equipment, electric rotor stirrers in the anoxic zone of the reaction tank are all kept in a working state;
(3) aeration: in the operation process of the equipment, an aeration system at the bottom of an aerobic zone of the reaction zone automatically aerates;
(4) and (3) precipitation: standing and precipitating the sewage after the sewage is treated in the reaction tank in a precipitation tank, and naturally precipitating the activated sludge;
(5) draining: discharging the treated sewage through an overflow weir above the sedimentation tank, and finishing the sewage treatment process;
the method is characterized in that: the proportion of the ship black ash sewage entering the first, second and third anoxic zones is 2: 1: 1.
9. the centralized treatment method of ship black grey water as claimed in claim 8, which is characterized in that: the operation cycle time is 8 h; the aeration is uninterrupted aeration, and the aeration intensity is 0.8m3H; the ship black ash water inlet and the activated sludge return are carried out simultaneously.
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Application publication date: 20200616 |