CN209778440U - Automatic integrated treatment system for aquaculture wastewater - Google Patents
Automatic integrated treatment system for aquaculture wastewater Download PDFInfo
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- CN209778440U CN209778440U CN201721031951.0U CN201721031951U CN209778440U CN 209778440 U CN209778440 U CN 209778440U CN 201721031951 U CN201721031951 U CN 201721031951U CN 209778440 U CN209778440 U CN 209778440U
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
the utility model provides an automatic integrated treatment system for aquaculture wastewater, which comprises a UASB anaerobic reaction device, an anaerobic ammonia oxidation reaction device and a secondary sedimentation tank device, wherein the UASB anaerobic reaction device comprises a UASB tank body, a three-phase separator, a rotary water distributor, a temperature acquisition module, a constant temperature heat exchanger, a COD online monitoring probe, a water collecting pipe, a circulating water pump, a circulating pipe and a controller; the three-phase separator, the rotary water distributor, the temperature acquisition module, the constant temperature heat exchanger and the COD online monitoring probe are arranged in the UASB tank body, and the water receiving pipe reflows through the circulating pipe; the circulating water pump is arranged on the circulating pipe; the UASB anaerobic reaction device is communicated with the secondary sedimentation tank device through the anaerobic ammonia oxidation reaction device; the controller is connected with the temperature acquisition module, the COD online monitoring probe, the constant temperature heat exchanger, the circulating water pump, the anaerobic ammonia oxidation reaction device and the secondary sedimentation tank device. The utility model provides a sewage treatment's a difficult problem.
Description
Technical Field
the utility model relates to a waste water treatment technical field especially relates to an automatic integrated processing system of waste water breeds.
Background
The main waste water of the farm consists of the sewage (including residual pig manure and urine) formed by washing the pig farm. The waste water contains a large amount of solid suspended substances, has high content of organic matters and ammonia nitrogen and serious stink, if the waste water is not treated, the stink of a breeding plant and mosquitoes and flies are clustered, the nitrate of underground water is seriously overproof, and infectious diseases and parasitic diseases in a few areas are epidemic. Moreover, the unqualified discharge of the sewage causes great pollution to the surrounding water system. At present, domestic treatment methods for livestock and poultry breeding wastewater mainly comprise an anaerobic method, an activated sludge method, a biological contact oxidation method and the like. Generally, these methods are a combination of several methods, and although widely used, these methods have poor effects. The method is characterized in that the content of ammonia nitrogen in the sewage is extremely high, the carbon-nitrogen ratio is seriously imbalanced, a plurality of environment-friendly units remove ammonia nitrogen by increasing the reflux ratio and by denitrification, but the removal efficiency of ammonia nitrogen is very low due to insufficient carbon source in the wastewater refluxed after oxidation, so that the ratio of the ammonia nitrogen in the treated wastewater which seriously exceeds the standard is all the same. And the accumulation of nitrite in the activated sludge tank causes microorganism poisoning, so that the effluent is often unstable and even the sludge is lost and paralyzed.
the waste water quality of the farm (such as a pig farm) is complex, and the waste water is characterized by mainly comprising the following aspects: (1) the discharge of the pig-raising wastewater is mainly organic pollutants and does not contain the first pollutants (mercury, copper, arsenic, lead, benzopyrene (a) and the like) specified by the state. But comprises three types of pollution, wherein the first type is pollution of hygiene indexes (the number of parasitic ova and the number of faecal coliform); the pollution of a second type of biochemical indexes (BOD5, CODcr, SS, NH3-H, TP); the third category of sensory indicators (malodour) pollution. (2) The concentration of organic matters, suspended matters and ammonia nitrogen pollutants in the wastewater is high, the values of CODcr, BOD5, NH3-N, TP and SS of different water sections are different, and the treatment difficulty is high. (3) The waste water discharge is relatively concentrated, and the impact load is large.
Since many environmental protection companies have high quality of operators and farmers are technically weak relative to the ordinary A/O or A2/O after the facilities are checked and delivered, the problems are often left unsound. At present, sewage treatment is mainly carried out by a UASB anaerobic reactor, an anaerobic ammonium oxidation reactor and a secondary sedimentation tank.
UASB is an English abbreviation for (Up-flow Anaerobic Sludge Bed/Blanket). The name is an up-flow anaerobic sludge bed reactor, which is an anaerobic biological method for treating sewage and is also called an up-flow anaerobic sludge bed. Upflow anaerobic sludge blanket reactor (UASB), was developed by Lettinga et al in the early 70 s of the 20 th century. The basic principle is as follows: the main body of the reactor is divided into an upper area and a lower area, namely a reaction area and a gas, liquid and solid three-phase separation area, and an anaerobic sludge bed with good sedimentation performance is arranged in the reaction area at the lower part; high-concentration organic wastewater enters the bottom of the reactor through a water distribution system, flows upwards through an anaerobic sludge bed, is in full contact reaction with anaerobic sludge, organic matters are converted into methane (mainly methane and carbon dioxide), and gas, liquid and solid are separated by a top three-phase separator.
anammox is a reaction of chemoautotrophic bacteria (commonly known as Anammox). Anaerobic ammonia oxidation (ANAMMOX) is a process of converting nitrite nitrogen and ammonia nitrogen into nitrogen gas simultaneously under the action of microorganisms under anaerobic conditions by using nitrite as an electron acceptor and ammonia nitrogen as an electron donor.
As early as 1976, Broda predicted that a chemoautotrophic bacterium, which oxidized NH +4 to N2 using NO-2 or NO-3 as electron acceptor, existed in nature. Until 1995, NH +4 disappeared in the denitrification fluidized bed reactor for yeast wastewater treatment by Mulder et al, confirming the presence of anammox reaction. Anammox (Anammox) is a process for converting ammonia (NH +4) to nitrogen (N2) under anoxic conditions using nitrite (NO-2) as an electron acceptor; accompanied by a biological process of fixing CO2 and producing nitrate (NO-3) using nitrite as an electron donor. Compared with nitrification, anaerobic ammonia oxidation replaces oxygen with nitrite, and changes a terminal electron acceptor; compared with denitrification, the method replaces organic matters with ammonia, changes the electron donor reactants into ammonia and nitrite, and changes the main products into nitrogen and nitrate.
Nitrosation and anaerobic ammoxidation are realized by controlling dissolved oxygen in a single reactor or in a biomembrane, thereby achieving the aim of denitrification. Depends on the stable interaction relationship of two autotrophic microbial floras under the anoxic condition, wherein the two autotrophic microbial floras are respectively aerobic bacteria of the Nitrosomonas genus and anaerobic ammonia oxidation bacteria of the Plancto2 mycote purpose. These autotrophic bacteria convert NH +4 directly to N2 using NO-2 as an intermediate. Complete removal of NH +4 was achieved in a single autotrophic reactor. The two autotrophic microbial populations interact in the reactor, causing two reactions to occur simultaneously. The microorganism performing this process is called Anaerobic Ammonia Oxidation Bacteria (AAOB) and its stoichiometric equation is as follows:
1NH+4+1.32NO-2+0.066HCO-3+0.13H+→1.02N2+0.26NO-3+0.066CH2O0.5N0.15+2.03H2O
Current applications to anaerobic ammonia oxidation processes are often associated with short-cut nitrification (nitrosation) because Ammonia Oxidizing Bacteria (AOB) can oxidize ammonia to nitrites, providing a substrate for AAOB.
Anaerobic ammonia oxidation is carried out under an anoxic condition, oxygen supply is not needed, and energy consumption can be saved by 62.5%;
Secondly, inorganic carbon (CO2 or HCO-3) is used as a carbon source for anaerobic ammonia oxidation, organic carbon is not required to be added, and the carbon source is greatly saved;
Thirdly, the CO2 generated by nitrosation-anaerobic ammonia oxidation is reduced by 90 percent compared with the common nitrification-denitrification system;
AAOB grows slowly, the yield is low, so the excess sludge amount of the process is small, and the sludge disposal cost is low;
Fifthly, the removal rate of the anaerobic ammonia oxidation nitrogen and the removal load of the nitrogen are higher, so that the occupied area of the process can be reduced, and the capital cost of the process is reduced.
The sewage treatment generally determines the sewage treatment degree and a corresponding treatment process according to the utilization or discharge direction of urban sewage and considering the natural purification capacity of a water body. The treated sewage, whether used for industrial, agricultural or recharge for groundwater, must meet the relevant water quality standards issued by the state. Since a large amount of insoluble matter exists in sewage, solid-liquid separation treatment is required for sewage treatment.
The conventional method has the following disadvantages:
1. the traditional UASB anaerobic reaction device cannot measure and control the temperature in the UASB tank body in real time in the reaction process, and the reaction efficiency is also influenced by the temperature; in addition, a part of COD can be removed in the reaction process of the UASB anaerobic reaction device, and the rest of COD can be discharged from the water outlet of the UASB anaerobic reaction device, but the specific removal amount cannot be seen at the water outlet, so that the method is not intuitive and the removal rate of the COD is not high.
2. the DO value (environmental monitoring oxygen parameter) of the traditional anaerobic ammonia oxidation reaction device cannot be seen visually, the amount of dissolved oxygen cannot be strictly controlled, medicines cannot be automatically added into the anaerobic ammonia oxidation reaction device in time for reaction, the growth of anaerobic ammonia oxidation bacteria is not facilitated, and the aeration cycle time cannot be controlled.
3. the existing secondary sedimentation tank cannot stably and maturely treat solid-liquid separation, and the ammonia nitrogen value existing in equipment treated by the anaerobic ammonia oxidation reaction device cannot be monitored at the water outlet of the secondary sedimentation tank.
disclosure of Invention
The to-be-solved technical problem of the utility model lies in providing an automatic integrated processing system of breed waste water, adopts UASB anaerobic reaction device, anaerobic ammonia oxidation reaction device and two full-automatic integrated processing systems that sink the pond and combine together, handles through automatic integrated processing method and breeds sewage, the effectual ammonia nitrogen and COD of having got rid of has solved the problem of the difficult various existence that bring of breed sewage treatment.
the utility model discloses a realize like this:
an automatic integrated treatment system for aquaculture wastewater comprises a UASB anaerobic reaction device, an anaerobic ammonia oxidation reaction device and a primary and secondary sedimentation tank device, wherein the UASB anaerobic reaction device comprises a UASB tank body, a three-phase separator, a rotary water distributor, a temperature acquisition module, a constant temperature heat exchanger, a COD online monitoring probe, a water collecting pipe, a circulating water pump, a circulating pipe, a circulating valve and a controller, and the UASB tank body is provided with a first water inlet, a circulating water outlet and a first water outlet;
the three-phase separator is arranged at the top in the UASB tank body, and the rotary water distributor is arranged at the bottom in the UASB tank body; the temperature acquisition module and the constant temperature heat exchanger are arranged in the UASB tank body, one end of the water receiving pipe extends into the bottom of the UASB tank body, the other end of the water receiving pipe is connected to the circulating water outlet, and the circulating water outlet is communicated with the first water inlet through the circulating pipe; the circulating water pump and the circulating valve are both arranged on the circulating pipe, the circulating valve is positioned between the circulating water pump and the circulating water outlet, and the circulating pipe is also communicated to a water inlet pump arranged in the sewage collection regulating tank through a water inlet pipe; the COD online monitoring probe is arranged at the first water outlet, the first water outlet is communicated to the anaerobic ammonia oxidation reaction device through a water outlet pipe, and the anaerobic ammonia oxidation reaction device is communicated to the secondary sedimentation tank device;
the controller is respectively connected with the temperature acquisition module, the COD online monitoring probe, the constant temperature heat exchanger, the circulating water pump, the water inlet pump of the sewage collection regulating tank, the anaerobic ammonia oxidation reaction device and the secondary sedimentation tank device.
Furthermore, the anaerobic ammonia oxidation reaction device comprises an anaerobic ammonia oxidation tank, at least one transverse perforated aeration pipe, a longitudinal perforated aeration pipe, at least one online dissolved oxygen meter, a contact elastic filler, a roots blower, a phosphorus removal agent integrated dosing device and an aeration valve, wherein a second water inlet, a second water outlet and a dosing port are formed in the anaerobic ammonia oxidation tank;
The transverse perforated aeration pipe is transversely arranged at the bottom of the anaerobic ammonia oxidation tank and is connected to the Roots blower through the longitudinal perforated aeration pipe; the aeration valve is arranged on the longitudinal perforated aeration pipe; the contact elastic filler is arranged in the anaerobic ammonia oxidation tank, and the online dissolved oxygen meter is arranged in the contact elastic filler; the phosphorus removing agent integrated dosing equipment is communicated with the dosing port; the second water inlet is communicated to the UASB anaerobic reaction device, and the second water outlet is communicated to the secondary sedimentation tank device; the controller is respectively connected with the online dissolved oxygen meter, the roots blower and the phosphorus removing agent integrated dosing equipment.
further, the secondary sedimentation tank device comprises a secondary sedimentation tank, an ammonia nitrogen online monitoring probe, an inclined tube honeycomb filler, a backflow pipe, a drainage pipe, a sewage backflow pump and a backflow valve, wherein a third water inlet, a third water outlet and a backflow port are formed in the secondary sedimentation tank;
the inclined tube honeycomb filler is filled in the middle of the secondary sedimentation tank, and the ammonia nitrogen online monitoring probe is arranged at the third water outlet; the third water inlet is communicated with the anaerobic ammonia oxidation reaction device, the third water outlet is communicated with the oxidation pond through the drain pipe, the return port is communicated with the interior of the anaerobic ammonia oxidation reaction device through the return pipe, and the sewage return pump is arranged on the return pipe and is positioned at the return port; the return valve is arranged on the return pipe and is positioned between the sewage return pump and the anaerobic ammonia oxidation reaction device; the controller is respectively connected with the ammonia nitrogen online monitoring probe and the sewage reflux pump.
furthermore, the water inlet end of the drain pipe is inserted into the third water outlet and is arranged on the top surface of the inclined pipe honeycomb filler.
Further, the controller is a PLC controller.
Further, the temperature acquisition module is a temperature sensor, a thermometer or a temperature detector.
The utility model has the advantages of as follows:
1. the utility model discloses a COD on-line monitoring probe gathers the COD value of delivery port, by the intake pump of PLC controller control circulating water pump and the dirty equalizing basin of collection, can also open through circulation valve manual control circulating water pump and circulate to control waste water business turn over the cycle time of the UASB jar body is in through circulation reaction and extension the internal time of UASB jar just can improve COD's clearance for the clearance of COD play water can reach more than 90%, volume load 3-10 kgCOD/(m3.d), and the marsh gas after the separation can regard as the energy utilization. Is very suitable for treating high-concentration culture wastewater, and the high-efficiency capability of degrading organic matters of the culture wastewater is far beyond that of a common hydraulic methane tank.
2. The utility model adds an on-line dissolved oxygen meter to strictly control the dissolved oxygen and ensure the stable growth of the anaerobic ammonium oxidation bacteria; the contact elastic filler is adopted, so that the transfer rate and the utilization rate of oxygen are improved, the water-gas biomembrane is fully exchanged, and organic matters in water are efficiently treated; adding medicines into the anaerobic ammonia oxidation reaction device for reaction in time and automatically to achieve effective removal of ammonia nitrogen; the aeration time of the transverse perforated aeration pipe and the longitudinal perforated aeration pipe can be controlled by the aeration valve.
3. the utility model discloses a be that the pipe chute honeycomb packs, can effectively realize solid-liquid separation, and mud is got rid of in the sediment, can also monitor the ammonia nitrogen value in two heavy ponds through ammonia nitrogen on-line monitoring probe.
Drawings
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of the system for automatically and integrally treating aquaculture wastewater.
FIG. 2 is a schematic view of the controller in the automatic integrated treatment system for aquaculture wastewater.
The reference numbers in the figures illustrate:
the system comprises a UASB anaerobic reaction device 100, a UASB tank 101, a three-phase separator 102, a rotary water distributor 103, a temperature acquisition module 104, a constant temperature heat exchanger 105, a COD online monitoring probe 106, a water receiving pipe 107, a circulating water pump 108, a circulating pipe 181, a circulating valve 109, a controller 110, a first water inlet 111, a circulating water outlet 112, a first water outlet 113 and a water outlet pipe 114;
The anaerobic ammonia oxidation reaction device 200, an anaerobic ammonia oxidation tank 201, a second water inlet 210, a second water outlet 211, a dosing port 212, a transverse perforated aeration pipe 202, a longitudinal perforated aeration pipe 203, an online dissolved oxygen meter 204, a contact elastic filler 205, a roots blower 206, a phosphorus removing agent integrated dosing device 207 and an aeration valve 208;
The system comprises a secondary sedimentation tank device 300, a secondary sedimentation tank 301, a third water inlet 311, a third water outlet 312, a return port 313, an ammonia nitrogen online monitoring probe 302, an inclined tube honeycomb filler 303, a return pipe 304, a drain pipe 305, a sewage return pump 306 and a return valve 307;
a sewage collecting adjusting tank 400, a water inlet pump 401, a water inlet valve 402 and a water inlet pipe 403;
The oxidation pond 500.
Detailed Description
In order to make the present invention more comprehensible, a preferred embodiment accompanied with figures is described in detail below.
as shown in fig. 1, the utility model discloses an automatic integrated processing system of aquaculture wastewater, including a UASB anaerobic reaction device 100, an anaerobic ammonium oxidation reaction device 200 and a primary and secondary sedimentation tank device 300, UASB anaerobic reaction device 100 includes a UASB tank 101, a three-phase separator 102, a rotatory water-locator 103, a temperature acquisition module 104, a constant temperature heat exchanger 105, a COD on-line monitoring probe 106, a water receiving pipe 107, a circulating water pump 108, a circulating pipe 181, a circulating valve 109 and a controller 110, UASB tank 101 is last to be equipped with a first water inlet 111, a circulating water outlet 112 and a first delivery port 113; the controller 110 is a PLC controller; the temperature acquisition module 104 is a temperature sensor, a thermometer or a temperature detector;
the rotary water distributor 103 is arranged at the bottom in the UASB tank 101, so that wastewater can uniformly contact with anaerobic activated sludge, and the ascending flow rate of the wastewater in the UASB tank 101 is ensured; the three-phase separator 102 is arranged at the top in the UASB tank 101 and can effectively separate three phases of the mixed liquid; the temperature acquisition module 104 and the constant temperature heat exchanger 105 are arranged in the UASB tank 101, one end of the water receiving pipe 107 extends into the bottom of the UASB tank 101, the other end is connected to the circulating water outlet 112, and the circulating water outlet 112 is communicated with the first water inlet 111 through the circulating pipe 181; the circulating water pump 108 and the circulating valve 109 are both arranged on the circulating pipe 181, the circulating valve 109 is positioned between the circulating water pump 108 and the circulating water outlet 112, the circulating pipe 181 is also communicated to a water inlet pump 401 arranged in the sewage collection regulating reservoir 400 through a water inlet pipe 403, and the water inlet pump 401 is manually controlled to be opened or closed by a water inlet valve 402; the COD on-line monitoring probe 106 is disposed at the first water outlet 113, the first water outlet 113 is communicated to the anammox reactor 200 through a water outlet pipe 114, and the anammox reactor 200 is communicated to the secondary sedimentation tank device 300.
Specifically, the anammox reaction device 200 comprises an anammox tank 201, at least one transverse perforated aerator pipe 202, a longitudinal perforated aerator pipe 203, at least one online dissolved oxygen meter 204, a contact elastic filler 205, a roots blower 206, a phosphorus removal agent integrated dosing device 207 and an aeration valve 208, wherein the anammox tank 201 is provided with a second water inlet 210, a second water outlet 211 and a dosing port 212;
The transverse perforated aeration pipe 202 is transversely arranged at the bottom of the anaerobic ammonia oxidation tank 201 and is connected to the roots blower 206 through the longitudinal perforated aeration pipe 203, and the roots blower 206 can realize aeration through the longitudinal perforated aeration pipe 203 and one transverse perforated aeration pipe 202 or can realize aeration through a plurality of transverse perforated aeration pipes 202; the aeration valve 208 is arranged on the longitudinal perforated aeration pipe 203, and the opening or closing of the aeration valve 208 can be controlled, so that the cyclic aeration time on the longitudinal perforated aeration pipe 203 can be controlled; the contact elastic filler 205 is arranged in the anaerobic ammonia oxidation tank 201, and the online dissolved oxygen meter 204 is arranged in the contact elastic filler 205; the phosphorus removing agent integrated dosing equipment 207 is communicated with the dosing port 212, so that dosing is timely carried out for reaction, and the reaction efficiency is improved; the second water inlet 210 is communicated to the UASB anaerobic reaction device 100, and the second water outlet 211 is communicated to the secondary sedimentation tank device 300. The contact elastic filler 205 is a biological carrier for treating wastewater by a biological contact oxidation method and an anaerobic fermentation method. It is widely used as biological filler in biological contact oxidation tanks and hydrolysis acidification tanks. The device has the advantages of high heat dispersion, small resistance, good water and gas distribution performance, easy film growth, and bubble cutting function, improves the transfer rate and the utilization rate of oxygen, enables the water-gas biomembrane to be fully exchanged, and enables the organic matters in the water to be efficiently treated.
specifically, the secondary sedimentation tank device 300 comprises a secondary sedimentation tank 301, an ammonia nitrogen online monitoring probe 302, an inclined tube honeycomb filler 303, a return pipe 304, a drain pipe 305, a sewage return pump 306 and a return valve 307, wherein the secondary sedimentation tank 301 is provided with a third water inlet 311, a third water outlet 312 and a return port 313;
The inclined tube honeycomb packing 303 is filled in the middle of the secondary sedimentation tank 301, and the ammonia nitrogen online monitoring probe 302 is arranged at the third water outlet 312; the third water inlet 311 is communicated to the anammox reactor 200, and the third water inlet 311 of the secondary sedimentation tank device 300 is communicated with the second water outlet 211 of the anammox reactor 200 and shares the same port; the third water outlet 312 is communicated to the oxidation pond 500 through the water outlet pipe 305, the return port 313 is communicated to the interior of the anaerobic ammonia oxidation reaction device 200 through the return pipe 304, and the sewage return pump 306 is arranged on the return pipe 304 and is positioned at the return port 313; the return valve 307 is disposed on the return pipe 304 and between the sewage return pump 306 and the anammox reaction device 200; the water inlet end of the water outlet pipe 305 is inserted into the third water outlet 312 and is arranged on the top surface of the inclined tube honeycomb packing 303, water flows through the inclined tube honeycomb packing 303 from bottom to top, and the precipitate passes through the inclined tube honeycomb packing 303 from top to bottom in opposite directions, so that the precipitate is precipitated at the bottom of the secondary sedimentation tank 301, the treated wastewater can be discharged from the water outlet pipe 305, effective solid-liquid separation is realized, and the sedimentation efficiency is improved.
As shown in fig. 2, the control mode of the automatic integrated treatment system for aquaculture wastewater is automatically controlled by the controller 110, specifically:
the controller 110 is respectively connected with the temperature acquisition module 104, the COD on-line monitoring probe 106, the constant temperature heat exchanger 105, the circulating water pump 108, the water inlet pump 401 of the sewage collection regulating reservoir 400, the on-line dissolved oxygen meter 204, the roots blower 206, the phosphorus removal agent integrated dosing device 207, the ammonia nitrogen on-line monitoring probe 302 and the sewage reflux pump 306.
The working principle of the utility model is as follows:
Step 1, pretreating mixed wastewater discharged from a farm, and then feeding the pretreated mixed wastewater into the UASB anaerobic reaction device 100 through a sewage collection regulating tank 400; the method specifically comprises the following steps:
After large-particle floating materials and other impurities are removed from mixed wastewater discharged from a farm through a grating, the wastewater containing a large amount of suspended matters enters a shallow infiltration tank for sedimentation and infiltration treatment, most solid particles are removed, the smooth operation of subsequent sections is ensured, and the biochemical sewage treatment load at the rear end is reduced; then the wastewater flows into a sewage collecting adjusting tank 400, so that the water quality and the water quantity can be adjusted, and the continuous, uniform and smooth operation of a sewage treatment system is ensured; the liquid level of the wastewater in the sewage collection regulating reservoir 400 is collected by a liquid level meter (not shown) and then fed back to the controller 110, when the liquid level in the sewage collection regulating reservoir 400 is higher than a set threshold liquid level, the controller 110 controls the water inlet pump 401 in the sewage collection regulating reservoir 400 to be started, and the wastewater in the sewage collection regulating reservoir 400 is lifted by the water inlet pump 401 and then enters the UASB anaerobic reaction device 100; when the liquid level in the sewage collecting regulating tank 400 is not higher than a set threshold liquid level, the controller 110 controls the water inlet pump 401 in the sewage collecting regulating tank 400 to be closed;
step 2, after the wastewater enters the bottom of the UASB tank 101 through the circulating pipe 181, performing efficient anaerobic digestion treatment; the wastewater is subjected to water distribution and stirring treatment by the rotary water distributor 103 positioned at the bottom of the UASB tank 101, so that the water distribution is uniform, and the stirring and mixing of sludge and wastewater can be realized; then the solid-liquid-gas separation is realized by the three-phase separator 102 positioned at the top of the UASB tank body 101, so that the formation of sludge solid particles is ensured;
Step 3, the temperature acquisition module 104 acquires the temperature in the UASB tank 101 in real time, and outputs the acquired temperature analog quantity to the controller 110, and the controller 110 converts the temperature analog quantity into a switching value; setting a threshold temperature in the UASB tank 101 to be 25 degrees, and when the temperature acquisition module 104 acquires that the temperature in the UASB tank 101 is lower than a set threshold temperature (25 degrees), controlling the constant temperature heat exchanger 105 to be opened by the controller 110, so that hot water in the constant temperature heat exchanger 105 flows, the constant temperature heat exchanger 105 is heated, and the temperature of the UASB tank 101 is increased; when the temperature in the UASB tank 101 collected by the temperature collection module 104 is not lower than a set threshold temperature (25 ℃), the controller 110 controls the constant temperature heat exchanger 105 to close;
Step 4, the COD on-line monitoring probe 106 collects the COD content of the first water outlet 113 in real time, and outputs the analog quantity of the collected COD content to the controller 110, and the controller 110 converts the analog quantity into a switching value; setting the COD threshold value of the first water outlet 113 at 700mg/l, when the COD online monitoring probe 106 monitors that the COD content value of the first water outlet 113 is greater than the set COD threshold value (700mg/l), controlling the water inlet pump 401 of the sewage collection regulating reservoir 400 to be closed by the controller 110, stopping water inlet, controlling the circulating water pump 108 to be opened, controlling the circulating water pump 108 to circulate, thereby controlling the circulating time of wastewater entering and exiting the UASB tank body 101, improving the removal rate of COD by circulating reaction and prolonging the time in the UASB tank body 101, realizing the circulating work of the circulating water pump 8 by the controller 110, and ensuring the removal rate of COD by the UASB anaerobic reaction device 100; when the COD on-line monitoring probe 106 monitors that the COD content at the first water outlet 113 is not greater than a set COD threshold (700mg/l), the controller 110 controls the water inlet pump 401 of the sewage collection regulating tank 400 to be turned on and the water circulation pump 108 to be turned off, and no circulation is performed; step 2, step 3 and step 4 have no sequence;
Step 5, after the wastewater is treated by the UASB anaerobic reaction device 100, the wastewater enters the anaerobic ammonia oxidation reaction device 200 through the water outlet pipe 114, and after aeration, dosing and oxidation treatment, the removal rate of ammonia nitrogen in the UASB anaerobic reaction device 200 is improved; the method specifically comprises the following steps:
The wastewater treated by the UASB anaerobic reaction apparatus 100 flows into the anammox tank 201 from the second water inlet 210, and the roots blower 206 is controlled by the controller 110 to intermittently and cyclically aerate the anammox tank 201 through the transverse perforated aerator pipe 202 and the longitudinal perforated aerator pipe 203; the online dissolved oxygen meter 204 monitors the DO content in the anaerobic ammonia oxidation tank 201 in real time, and outputs the acquired analog quantity of the DO content to the controller 110, and the controller 110 converts the analog quantity into a switching value; setting a DO (dissolved oxygen) threshold value at 1mg/l, when the DO content is higher than the set DO threshold value (1mg/l), controlling the dephosphorization agent integrated dosing equipment 207 to be started by the controller 110, and adding a ferrous sulfate flocculating agent which has little harm to activated sludge in the anaerobic ammonia oxidation tank 201 through the dephosphorization agent integrated dosing equipment 207 to adsorb and precipitate the residual total phosphorus in the water; when the DO content is not higher than a set DO threshold value (1mg/l), the controller 110 controls the dephosphorization agent integrated dosing device 207 to be closed, and the anaerobic ammonia oxidation autotrophic bacteria convert nitrate into nitrogen under the anoxic condition under the condition that the anaerobic ammonia oxidation bacteria DO not need a carbon source, so that ammonia nitrogen is removed;
Step 6, after the wastewater is treated by the anaerobic ammonia oxidation reaction device 200, the wastewater enters the secondary sedimentation tank 301, secondary sedimentation treatment is performed in the secondary sedimentation tank 301, and the wastewater meeting the discharge standard is discharged through the oxidation pond 500; the method specifically comprises the following steps:
The wastewater enters the secondary sedimentation tank device 300 after being treated by the anaerobic ammonia oxidation reaction device 200, and then passes through the inclined tube honeycomb packing 303 in the secondary sedimentation tank 301 (mainly used for various sedimentation and sand removal effects, suitable for water inlet sand removal, common industrial and domestic water sedimentation, sewage sedimentation, oil separation, tail gas concentration and other treatments, and has the advantages of wide application range, high treatment effect, small occupied area and the like), and the wastewater can be effectively subjected to solid-liquid separation, and phosphorus removal is realized by a sludge sedimentation and removal mode. The ammonia nitrogen online monitoring probe 302 collects the ammonia nitrogen content of the third water outlet 312 in real time, and outputs the ammonia nitrogen analog quantity to the controller 110, and the controller 110 converts the ammonia nitrogen analog quantity output into a switching quantity; setting an ammonia nitrogen threshold value to be 40mg/l, when the ammonia nitrogen online monitoring probe 302 monitors that the content of ammonia nitrogen is greater than a set ammonia nitrogen threshold value (40mg/l), the controller 110 controls the water inlet pump 401 of the sewage collection regulating tank 400 to be closed, stops water inlet, starts the sludge reflux pump 306, and controls the sludge reflux pump 306 to perform cyclic aeration treatment; when the ammonia nitrogen online monitoring probe 302 monitors that the ammonia nitrogen content is not greater than a set ammonia nitrogen threshold value (40mg/l), the controller 110 controls the water inlet pump 401 of the sewage collection regulating tank 400 to be opened and the sludge reflux pump 306 to be closed, and the cyclic aeration treatment is not performed; ensuring that the wastewater reaches the discharge standard, and the wastewater reaching the discharge standard automatically flows into the oxidation pond 500 to be discharged after ecological treatment such as biological oxidation and photosynthesis of aquatic plants, so as to ensure that the sewage achieves ecological harmlessness.
The utility model discloses a breed controllable adjustable operational mode of automatic integrated processing system of waste water has realized the stable automatic operation of breeding sewage, has also solved the paralyzed problem of biochemical system that the high quality of operation personnel leads to, need not increase the reflux ratio and add carbon source and basicity at anaerobic ammonia oxidation in-process, has realized energy saving and consumption reduction, has responded the policy of the energy saving environmental protection of advocating by present country and has administered. Under the control of dissolved oxygen, the anaerobic ammonium oxidation bacteria can be cultured quickly, and the effective removal of ammonia nitrogen in the aquaculture sewage is ensured. Table 1 shows data obtained after several experiments.
table 1:
as can be seen from the data in the table, the COD of the aquaculture wastewater treated by the automatic integrated treatment system of the embodimentCr、BOD5The removal rate of SS, ammonia nitrogen and other contents reaches an ideal level, the whole water outlet condition is stable, and the treatment efficiency is high, so that the UASB oxidation reaction and the anaerobic ammonia oxidation process of the automatic integrated treatment system for the aquaculture wastewater reach a relatively ideal level.
Although specific embodiments of the present invention have been described, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the claims appended hereto.
Claims (6)
1. The utility model provides an automatic integrated processing system of breed waste water which characterized in that: the system comprises a UASB anaerobic reaction device, an anaerobic ammoxidation reaction device and a primary and secondary sedimentation tank device, wherein the UASB anaerobic reaction device comprises a UASB tank body, a three-phase separator, a rotary water distributor, a temperature acquisition module, a constant temperature heat exchanger, a COD online monitoring probe, a water collecting pipe, a circulating water pump, a circulating pipe, a circulating valve and a controller, and the UASB tank body is provided with a first water inlet, a circulating water outlet and a first water outlet;
the three-phase separator is arranged at the top in the UASB tank body, and the rotary water distributor is arranged at the bottom in the UASB tank body; the temperature acquisition module and the constant temperature heat exchanger are arranged in the UASB tank body, one end of the water receiving pipe extends into the bottom of the UASB tank body, the other end of the water receiving pipe is connected to the circulating water outlet, and the circulating water outlet is communicated with the first water inlet through the circulating pipe; the circulating water pump and the circulating valve are both arranged on the circulating pipe, the circulating valve is positioned between the circulating water pump and the circulating water outlet, and the circulating pipe is also communicated to a water inlet pump arranged in the sewage collection regulating tank through a water inlet pipe; the COD online monitoring probe is arranged at the first water outlet, the first water outlet is communicated to the anaerobic ammonia oxidation reaction device through a water outlet pipe, and the anaerobic ammonia oxidation reaction device is communicated to the secondary sedimentation tank device;
the controller is respectively connected with the temperature acquisition module, the COD online monitoring probe, the constant temperature heat exchanger, the circulating water pump, the water inlet pump of the sewage collection regulating tank, the anaerobic ammonia oxidation reaction device and the secondary sedimentation tank device.
2. the automatic integrated aquaculture wastewater treatment system of claim 1, wherein: the anaerobic ammonia oxidation reaction device comprises an anaerobic ammonia oxidation tank, at least one transverse perforated aeration pipe, a longitudinal perforated aeration pipe, at least one online dissolved oxygen instrument, a contact elastic filler, a Roots blower, a phosphorus removal agent integrated dosing device and an aeration valve, wherein the anaerobic ammonia oxidation tank is provided with a second water inlet, a second water outlet and a dosing port;
The transverse perforated aeration pipe is transversely arranged at the bottom of the anaerobic ammonia oxidation tank and is connected to the Roots blower through the longitudinal perforated aeration pipe; the aeration valve is arranged on the longitudinal perforated aeration pipe; the contact elastic filler is arranged in the anaerobic ammonia oxidation tank, and the online dissolved oxygen meter is arranged in the contact elastic filler; the phosphorus removing agent integrated dosing equipment is communicated with the dosing port; the second water inlet is communicated to the UASB anaerobic reaction device, and the second water outlet is communicated to the secondary sedimentation tank device; the controller is respectively connected with the online dissolved oxygen meter, the roots blower and the phosphorus removing agent integrated dosing equipment.
3. the automatic integrated aquaculture wastewater treatment system of claim 1, wherein: the secondary sedimentation tank device comprises a secondary sedimentation tank, an ammonia nitrogen online monitoring probe, an inclined tube honeycomb filler, a backflow pipe, a drainage pipe, a sewage backflow pump and a backflow valve, wherein a third water inlet, a third water outlet and a backflow port are formed in the secondary sedimentation tank;
the inclined tube honeycomb filler is filled in the middle of the secondary sedimentation tank, and the ammonia nitrogen online monitoring probe is arranged at the third water outlet; the third water inlet is communicated with the anaerobic ammonia oxidation reaction device, the third water outlet is communicated with the oxidation pond through the drain pipe, the return port is communicated with the interior of the anaerobic ammonia oxidation reaction device through the return pipe, and the sewage return pump is arranged on the return pipe and is positioned at the return port; the return valve is arranged on the return pipe and is positioned between the sewage return pump and the anaerobic ammonia oxidation reaction device; the controller is respectively connected with the ammonia nitrogen online monitoring probe and the sewage reflux pump.
4. the automatic integrated aquaculture wastewater treatment system of claim 3, wherein: and the water inlet end of the drain pipe is inserted into the third water outlet and is arranged on the top surface of the inclined pipe honeycomb packing.
5. the automatic integrated aquaculture wastewater treatment system of claim 1, wherein: the controller is a PLC controller.
6. The automatic integrated aquaculture wastewater treatment system of claim 1, wherein: the temperature acquisition module is a temperature sensor, a thermometer or a temperature detector.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107381804A (en) * | 2017-08-17 | 2017-11-24 | 福州福龙膜科技开发有限公司 | A kind of breeding wastewater automatic integratedization processing system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107381804A (en) * | 2017-08-17 | 2017-11-24 | 福州福龙膜科技开发有限公司 | A kind of breeding wastewater automatic integratedization processing system and method |
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