CN116354521A - Domestic sewage pre-decomposition device and method - Google Patents
Domestic sewage pre-decomposition device and method Download PDFInfo
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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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
-
- 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
- C02F3/342—Biological treatment of water, waste water, or sewage characterised by the microorganisms used characterised by the enzymes used
-
- 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
- C02F3/347—Use of yeasts or fungi
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/10—Temperature conditions for biological treatment
- C02F2301/106—Thermophilic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2307/00—Location of water treatment or water treatment device
- C02F2307/08—Treatment of wastewater in the sewer, e.g. to reduce grease, odour
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- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Mycology (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The present disclosure provides a domestic sewage pre-decomposition device and method, the pre-decomposition device includes: a transport pipe provided in the domestic sewage pipe and laid along the domestic sewage pipe; a pressure pump provided at an input port of the delivery pipe for pumping the decomposition liquid into the delivery pipe; the input port is arranged at the outlet of the domestic sewage pipeline and is used for inputting the decomposing liquid in the reverse domestic sewage flow direction; flow control valves provided on the trunk and branch lines at the nodes of the transport pipe for adjusting the flow rates of the trunk and branch lines; and the backflow preventing device is arranged at the tail end of the conveying pipeline and used for preventing domestic sewage from flowing back. The method has the advantages that the cleaning, dredging and bacteria feeding work of the sewage pipeline is more convenient and faster, and the cost is lower; the generation of greenhouse gases in the pipeline is reduced by targeted bacteria throwing, and the air is purified; the sewage pipeline is insulated, which is favorable for keeping the activity of bacteria, improving the propagation of the put bacteria, forming dominant bacteria and leading the decomposition efficiency to be higher.
Description
Technical Field
The disclosure relates to the field of sewage treatment, in particular to a domestic sewage pre-decomposition, greenhouse gas emission reduction device and flushing facilities in a sewage pipe network.
Background
The treated domestic sewage is used as fertilizer, and the resource of the domestic sewage is reasonably utilized, which is one of the targets of domestic sewage treatment. In the process of fertilizing domestic sewage, organic matters in the sewage are required to be decomposed into absorbed and utilized nutrition, and ecological water control cannot be realized without decomposition of the organic matters.
The existing common practice is to install integrated equipment, and the medicines are inevitably used, so that the medicines are inevitably left and left, and the medicines are always damaged, so that the time consumption, labor consumption and effort are required, the efficiency is low, the investment is huge, and even the resource waste is caused.
In a real environment, the cleaning in the sewage pipeline is not timely carried out, and the room gas such as hydrogen sulfide and the like can be generated to pollute the air. In reality, the sewer pipeline is rarely cleaned before being blocked, and the generation of greenhouse gases is aggravated.
In addition, the decomposing bacteria have low efficiency in low temperature in winter, so the temperature becomes one of the difficult problems of ecological water control in winter.
Disclosure of Invention
The utility model aims to provide a device for pre-decomposing domestic sewage by utilizing a domestic sewage pipe network, so as to solve the problems existing in the prior art. The device is implemented, so that the cleaning, dredging and bacteria feeding work of the domestic sewage pipeline is more convenient, faster and lower in cost; the generation of greenhouse gases in the pipeline is reduced by targeted bacteria throwing, and the air is indirectly purified; preserving heat of the domestic sewage pipeline, maintaining the temperature in the pipeline and keeping bacteria active. The propagation of the put bacteria is improved, and dominant bacteria are formed. The decomposition efficiency is higher, the sludge decomposition speed is higher, so that the pipeline cannot be blocked due to excessive sludge; meanwhile, under the action of the heat preservation layer, more heat resources are reserved in the pipeline, and a good foundation is laid for ecological domestic sewage treatment and resource utilization in winter.
In order to achieve the above object, the present invention provides the following solutions:
a domestic sewage pre-decomposition device, the pre-decomposition device comprising:
a delivery conduit disposed within and laid along the domestic sewage conduit;
the pressure pump is arranged at an input port of the conveying pipeline and is used for pumping decomposition liquid or cleaning liquid into the conveying pipeline;
the input port is arranged at the outlet of the domestic sewage pipeline and is used for inputting the decomposing liquid in the reverse domestic sewage flow direction;
flow control valves provided on the trunk and branch lines at the nodes of the delivery pipe for adjusting the flow rates of the trunk and branch lines;
and the backflow prevention device is arranged at the tail end of the conveying pipeline and used for preventing domestic sewage from flowing back.
Optionally, the decomposing liquid comprises one or more of adding EM bacteria, enzymes and carbon sources.
Optionally, the decomposing liquid comprises one or more of lactobacillus, butyric acid bacteria, saccharomycetes, enzyme and carbon source.
Optionally, the sewage treatment system further comprises a biochemical tank, wherein the biochemical tank is arranged at the outlet of the domestic sewage pipeline and is communicated with the domestic sewage pipeline.
Optionally, the biochemical tank comprises a domestic sewage containing tank and a reflux tank, and the domestic sewage containing tank is separated from the reflux tank by a partition board.
Optionally, an overflow port is further arranged on the upper portion of the partition board, the height of the overflow port is adjustable, and supernatant in the domestic sewage containing tank is conveniently discharged to the reflux tank.
Optionally, the pressure pump is disposed in the return tank.
Optionally, the system further comprises a sight well arranged at a position of the domestic sewage pipeline corresponding to the delivery pipeline node and the tail end; the observation well comprises a well lid.
Optionally, the sewage treatment device further comprises an insulation layer, wherein the insulation layer wraps the domestic sewage pipeline, the observation well and the well lid.
Optionally, the heat insulation layer material comprises foam material, silica gel, foam or glass fiber.
The invention also provides a domestic sewage pre-decomposition method, which comprises the following steps:
paving a conveying pipeline, wherein the conveying pipeline is paved along a domestic sewage pipeline and is arranged in the domestic sewage pipeline;
installing a pressure pump, wherein the pressure pump is arranged at an outlet of the domestic sewage pipeline and is used for pumping decomposition liquid or cleaning liquid into the conveying pipeline;
detecting the type and the quantity of sludge at the outlet of the domestic sewage pipeline, and regulating the added bacterial liquid;
and conveying the decomposition liquid into the domestic sewage pipeline by utilizing the conveying pipeline.
Optionally, the method further comprises:
circularly detecting the type and the quantity of sludge at the outlet of the domestic sewage pipeline, and regulating the added bacterial liquid;
and conveying the decomposition liquid into the domestic sewage pipeline by utilizing the conveying pipeline.
Optionally, the bacterial liquids are divided into two groups: one group is lactobacillus, butyric acid bacteria and saccharomycetes, the other group is EM bacteria, and the two groups are put in for a plurality of hours at intervals, and carbon sources are added when bacterial liquid is put in.
Optionally, the method further comprises: an insulation layer is arranged and wraps the domestic sewage pipeline so as to maintain the temperature in the domestic sewage pipeline.
The invention has at least the following technical effects:
according to the invention, the decomposing bacteria liquid and the cleaning water are conveyed to all positions of the domestic sewage pipeline through the conveying pipeline, so that the method is more convenient and faster; the sludge in the domestic sewage pipeline is decomposed under the action of decomposing bacteria, so that the pipeline is not easy to be blocked, and the pipeline cleaning effect is achieved; the domestic sewage containing pool, the reflux pool and the input pipeline form a circulating water body to form a stable bacteria culture system, so that the bacteria culture cost is saved; under the action of lactobacillus, saccharomycetes and other strains, the generation of hydrogen sulfide isothermal chamber gas is inhibited, and the air is indirectly purified; the domestic sewage pipeline is provided with the heat-insulating layer, so that the temperature in the pipeline can be kept at 15-35 ℃ on one hand, and the heat-insulating layer plays a role in bearing pressure on the other hand. In the mode, the problem that the bacterial activity of domestic sewage treated in winter ecologically is reduced due to low temperature is solved. In a word, through the implementation of the technology, domestic sewage is pre-decomposed in the pipeline, the water outlet temperature is increased, the seasonal limitation is broken, the domestic sewage treatment cost is saved, and meanwhile, the water flow of the pipeline is increased to form a flushing function, so that the pipeline is dredged, and the pipeline clogging problem is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the whole structure of a domestic sewage pre-decomposition device according to an embodiment of the present invention;
1, a biochemical pool; 2. a domestic sewage holding tank; 3. a reflux pool; 4. a pressure pump; 5. a domestic sewage conduit; 6. a delivery conduit; 7. an observation well; 8. a flow control valve; 9. and a backflow preventing device.
FIG. 2 is a perspective view of a cross-section of a conduit according to one embodiment of the present invention;
wherein 11 is an insulating layer; 12 is a fiber cloth.
FIG. 3 is a flow chart of a method according to an embodiment of the invention.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present disclosure, the present disclosure will be described in further detail with reference to the accompanying drawings and detailed description.
The disclosure and the method of practicing the disclosure may be better understood by referring to the following detailed description of exemplary embodiments and the accompanying drawings. This disclosure may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. Like reference numerals may refer to like elements throughout. In the drawings, the thickness of layers and regions may be exaggerated for clarity.
Examples
The invention provides a device for pre-decomposing domestic sewage by using a domestic sewage pipe network, as shown in figures 1-2, the device comprises: a transfer pipe 6 provided in the domestic sewage pipe 5 and laid along the domestic sewage pipe 5; so as to facilitate the delivery of the decomposition liquid into the domestic sewage conduit 5;
a pressure pump 4 provided at an input port of the delivery pipe 6, for pumping the decomposition liquid or the cleaning liquid into the delivery pipe 6;
specifically, the input port is arranged at the outlet of the domestic sewage pipeline 5 and is used for inputting the decomposing liquid in the reverse domestic sewage flow direction;
a flow control valve 8 provided on the trunk and branch lines at the node of the delivery pipe 6 for adjusting the flow rate of the trunk and branch lines;
and a backflow preventing device 9, wherein the backflow preventing device 9 is arranged at the tail end of the conveying pipeline 6 and is used for preventing domestic sewage from flowing back.
Specifically, in order to timely decompose sludge in the domestic sewage pipeline, so that the pipeline is not easy to be blocked, and the pipeline cleaning effect is achieved, the invention lays a conveying pipeline 6 along the domestic sewage pipeline 5, so that decomposition liquid and cleaning clear water can be conveniently conveyed into the domestic sewage pipeline 5. Wherein, the conveying direction of the decomposing liquid and the cleaning water is set up against the flow direction of domestic sewage. Wherein, the conveying pipeline 6 adopts a hard bearing pipe with 60-100 mm.
In order to smoothly convey the decomposition liquid and the cleaning water, the utility pressure pump 4 pressurizes the liquid in the conveying pipe 6 in this embodiment, and the pressure pump 4 is generally provided at the input port of the conveying pipe 6.
In order to control the liquid in the conveying pipeline 6, the device further comprises a flow control valve 8 arranged on the conveying pipeline 6, wherein the flow control valve 8 is arranged on a main road and a branch road at a node of the conveying pipeline 6, so that the flow of the main road and the branch road can be controlled. For example, when the sludge is accumulated in some areas of the domestic sewage conduit 5 and some areas are cleaned, the direction and area of the transfer of the decomposed liquid and the cleaning water can be controlled by adjusting the flow control valve 8.
The observation well is used for flushing when the sediment and other substances at the bottom of the pipeline are more every day, and flushing times are reduced as much as possible in the actual operation process so as to maintain the normal growth of flora in the pipeline.
In addition, each flow control valve 8 can be remotely controlled, and the control point is arranged at the outlet of the domestic sewage pipe network, so that independent control of each flow control valve and centralized management of the whole domestic sewage pipe network are facilitated.
In this embodiment, the end of the conveying pipeline 6 is provided with the backflow preventing device 9, and the backflow preventing device 9 is, for example, a 90-degree elbow, so that the elbow opening faces upwards, and is connected with the backflow preventing valve, so that when the water flow in the conveying pipeline 6 stops conveying, the negative pressure in the conveying pipeline 6 is caused by falling of the water flow to suck the sludge in the domestic sewage pipeline 5, and the conveying pipeline 6 is prevented from being blocked.
In this embodiment, the sludge in the domestic sewage conduit 5 is analyzed, and a suitable decomposition liquid is selected, optionally, for example, one or more of EM bacteria, enzymes or carbon sources are added; one or more of lactobacillus, butyric acid bacteria, yeast, enzyme or carbon source can also be selected. In this embodiment, the carbon source is glucose or brown sugar, and the carbon source is a nutrient for microorganism growth and is a carbon-containing compound. Commonly used carbon sources are sugars, oils, organic acids, organic acid esters and small molecule alcohols. Different microorganisms may use different carbon sources depending on the enzyme system they are capable of producing. The carbon source has the effect on the growth and metabolism of microorganisms, and mainly provides a carbon skeleton for cells, energy required by vital activities of the cells and a carbon skeleton for synthetic products. The carbon source plays an important role in preparing a microorganism culture medium or a cell culture medium, and provides a material basis for normal growth and division of microorganisms or cells.
In one embodiment of the invention, in general, the applied microorganisms are EM bacteria or bacterial groups formed in a domestic sewage holding tank can meet the decomposition requirement, but for special places such as restaurants on a trunk line, etc., bacteria or enzymes which are easy to decompose oil stains, such as lipase for decomposing oil stains and amylase for decomposing starch, are required to be added, and different microbial bacterial groups are required to be configured according to specific situations.
At the initial stage of bacteria feeding, under the condition of environmental change, the bacteria can secrete enzymes to decompose substances for supplying the required growth. The enzyme can be put in to reduce the time, and meanwhile, in the bacterial growth process, the enzyme additionally provides decomposed substances for bacterial growth, so that the growth speed of bacteria is accelerated, and the activity of the bacteria is also improved.
For example, for the fungus administration of one of the embodiments, when it is detected that the cod value in the water flowing out of the domestic sewage pipe 5 is higher than 200mg/L, the fungus is administered according to the daily water discharge amount of 2000 hundred million units per cubic. When the cod value is lower than 200mg/L, the administration amount is 1000 hundred million units per cubic. The water source of the thrown bacterial liquid adopts the domestic sewage pipeline 5 to carry out water-out culture, thereby achieving the function of domesticating the decomposing bacteria of the thrown engineering bacteria. Thereby improving the decomposing efficiency and capability of the engineering bacteria decomposing bacteria.
In one embodiment of the invention, as shown in fig. 1, a biochemical tank 1 is further included, the biochemical tank 1 being arranged, for example, at the outlet of the domestic sewage conduit 5 and communicating with the domestic sewage conduit 5.
Specifically, the biochemical tank 1 comprises, for example, a domestic sewage holding tank 2 and a reflux tank 3, wherein the domestic sewage holding tank 2 and the reflux tank 3 are separated by a partition board; optionally, the upper part of the partition plate is also provided with an overflow port, the height of the overflow port is adjustable, and the supernatant in the domestic sewage containing tank 2 is conveniently discharged to the reflux tank 3.
After flowing out of the sewage pipe network, the domestic sewage or sludge enters a domestic sewage holding tank, is stirred, and simultaneously is put with EM bacteria, and organic matters in the domestic sewage are used as decomposing bacteria which are suitable for nutrition propagation and the domestic sewage to form bacterial liquid. Discharging the supernatant into a reflux tank after simple precipitation; the bacterial liquid is transported to the domestic sewage pipeline 5 through the transport pipeline 6 by the pressure pump 4 in the reflux tank. Under the action of the bacterial liquid, the sludge in the domestic sewage pipeline is decomposed or partially decomposed to form a mixed solution of nutrient solution and suspended matters; the mixed liquid flows out and enters a domestic sewage containing tank 2; the supernatant is then discharged again to the reflux tank 3 after precipitation, and is circulated.
In one embodiment of the invention, it further comprises providing a viewing well 7, the viewing well 7 being provided, for example, at a location of the domestic sewage conduit 5 corresponding to the node and end of the transfer conduit 6; the observation well 7 comprises a well lid. The size of the observation well 7 is convenient for observation and construction. For example, the observation well 7 is dug down in the vertical direction, so that the lower part of the observation well is 0.5-1 m deeper than the domestic sewage pipeline 5. The large granular substances can be deposited at the position without affecting the normal circulation of the pipeline, the fixing clamp can be arranged at the position to fix the conveying pipeline 6, so that the conveying pipeline 6 is prevented from shifting, or the conveying pipeline 6 cannot be deformed by pressure in the process of taking out the sediment, and the normal operation of the conveying pipeline 6 is ensured.
The sediment can be cleaned periodically through the observation well 7, and can be put into the domestic sewage holding tank 2 as a load as a nutrient source for bacteria cultivation.
In one embodiment of the invention, the temperature is favorable for decomposing sludge and also favorable for maintaining the activity of bacteria, and in order to cope with the reduction of the environmental temperature, such as the very cold winter in certain areas and the heat preservation in the sludge decomposition process, the invention wraps the heat preservation layer around the domestic sewage pipeline 5, and the observation well 7 and the well cover are both provided with the heat preservation layer; the heat preservation layer is formed by manufacturing prefabricated parts by using heat preservation materials, wrapping the prefabricated parts on the outer wall of the domestic sewage pipeline, and fixing the prefabricated parts by wrapping fiber cloth outside the prefabricated parts, wherein the thickness of the prefabricated parts is 5-15 cm; the thickness of the heat insulation material is determined according to the local air temperature and the depth of the buried earth, and the lower the air temperature is, the shallower the buried earth is, and the higher the thickness is; the material of heat preservation adopts common heat preservation material to make, for example foam material, silica gel, bubble cotton, glass fiber etc. is better than the sand heat preservation effect of burying around the normal pipeline, and is with low costs, effectual.
In one embodiment of the invention, the method further comprises the step of conveying the cleaning clear water by utilizing the conveying pipeline 6, for example, the supernatant liquid of the domestic sewage holding tank 2 is used for flushing the domestic sewage pipeline 5 once every 3-5 days, the water outlet is finished when no obvious sludge exists, and the flushing effect is better in the water use peak period.
The device for pre-decomposing domestic sewage provided by the invention has the advantages that for example, a domestic sewage pipeline is about 1000 meters long, obvious sediment in the pipeline is reduced after bacteria are added for one week, and the water quality is clear. The beneficial bacteria are greatly bred, a large amount of suspended organic substances are decomposed into soluble nutrient substances, the SS value of suspended substances in the inlet water body and the outlet water is reduced from 214 to 57, a large amount of large-particle organic substances are decomposed into small-particle organic substances, the turbidity value is changed from 103 to 43, and meanwhile, the chromaticity is increased from 80 to 146, so that the soluble substances are greatly increased. Meanwhile, the cod in the mass propagation water body of the flora is reduced from 315 to 181, the ammonia nitrogen value is reduced from 131 to 60, and the ammonia nitrogen value is reduced to between 40 and 60 percent, so that the pollution degree of the water body is effectively reduced.
Examples
As shown in fig. 3, the present invention also proposes a domestic sewage pre-decomposition method corresponding to embodiment 1, wherein the contents already described in embodiment 1 are not repeated, and specifically, the domestic sewage pre-decomposition method of the present invention includes the following steps:
paving a conveying pipeline 6, wherein the conveying pipeline 6 is paved along the domestic sewage pipeline 5 and is arranged in the domestic sewage pipeline 5;
a pressure pump 4 is arranged, and the pressure pump 4 is arranged at the outlet of the domestic sewage pipeline 5 and is used for pumping decomposition liquid and cleaning clean water into the conveying pipeline 6;
the contents of protein, fat, cellulose and the like in the wall attachments of the domestic sewage pipeline 5 are detected in real time, and when the proportion of a certain substance is high, corresponding bacteria or enzymes are added, so that the decomposition speed is enhanced, and the pipeline is kept clean. When suspended substances in the pipeline are more, the adding amount of bacteria in the decomposing liquid is increased, so that the decomposing speed is enhanced. In real life, such as restaurants and more streets of delicatessens, high oil content requires decomposed lipases and proteases, and streets gathered in the store require starch decomposed amylases. The street in the vegetable market requires cellulolytic cellulases and the like.
The enzyme can be secretion of bacteria or direct commercial products, can be used according to actual conditions in the process of putting, can put bacteria so as to generate corresponding enzymes, can also be used for directly putting needed enzymes, such as places with more grease, can accelerate the decomposition of the grease, and meanwhile, decomposed substances provide more sufficient nutrition for strains capable of decomposing the grease substances, so that the bacteria can be rapidly proliferated to form dominant bacterial groups while the activity of the bacteria is improved.
The decomposing liquid or the cleaning clear water is conveyed into the domestic sewage pipeline 5 by the conveying pipeline against the domestic sewage flow.
Specifically, the pre-decomposition working process of the invention is as follows:
on the one hand, one embodiment of the invention can realize the decomposition of substances in the domestic sewage by detecting the content and the type of pollutants in the domestic sewage at the water outlet of the domestic sewage pipeline 5, selecting proper additive bacteria and content and conveying the additive bacteria into the domestic sewage pipeline by utilizing the conveying pipeline 6.
In another embodiment, when the domestic sewage containing tank 2 is arranged at the water outlet of the domestic sewage pipeline 5, after the domestic sewage flows out from the water outlet end of the domestic sewage pipeline 5, the domestic sewage flows into the domestic sewage containing tank 2, the height of the overflow port of the partition plate is increased, and the stirring device in the domestic sewage containing tank 2 is used for stirring, so that the sewage and the precipitated sludge are convenient to mix, and decomposed bacteria are propagated; stirring for 10-30 minutes each time, and then standing; after the suspended matters are precipitated, the height of an overflow port of a baffle plate is reduced, so that the supernatant overflows to a reflux tank 3; a pressure pump 4 is arranged in the reflux tank 3, and the supernatant in the reflux tank 3 is discharged into a domestic sewage pipeline 5; according to the types and the amounts of the sludge in the sewage flowing out of the domestic sewage pipeline 5, the added bacterial liquid is regulated; when the bacterial liquid is required to be put in, the bacterial liquid is added into the reflux tank 3; the bacterial liquid is discharged into the domestic sewage pipeline 5 through the conveying pipeline 6, and the organic matters in the sewage in the pipeline are utilized to reproduce again, so that the organic matters in the sewage are decomposed, and sludge accumulation is avoided.
According to the domestic sewage discharge amount, flushing water is discharged through the domestic sewage pipeline 5 at regular time every day, and sludge is flushed out timely. After flushing out, the sewage enters the domestic sewage containing tank 2 and then enters the reflux tank 3 to generate reflux water, and the cycle is performed.
The supernatant of the domestic sewage holding tank 2 is used for flushing the domestic sewage pipeline 5 every 3-5 days, the flushing is finished when the effluent has no obvious silt, and the flushing effect is better in the water use peak period.
Optionally, the bacterial liquids are divided into two groups: one group is lactobacillus, butyric acid bacteria and saccharomycetes, the other group is EM bacteria, and carbon sources are added when the bacteria liquid is put in, wherein the two groups are put in for a plurality of hours, such as 12 hours. The strain is put into beneficial bacteria which are put into colonisation and are used as dominant bacteria groups, the carbon source is added to provide rich carbon elements which can be rapidly utilized for bacteria, and the carbon elements are more than 50% of the dry weight of the microorganisms, so that the bacteria have sufficient energy and substances for rapid propagation so as to achieve the effect of the dominant bacteria groups, the first group of bacteria are obligate anaerobic bacteria, dominant bacteria groups are easier to form in a pipeline environment, and meanwhile, a plurality of bacteria are secreted to inhibit most pathogenic bacteria. The second group of EM bacteria is a combination of a plurality of strains, has broad spectrum, can adapt to most domestic sewage water bodies, and has corresponding decomposition capacity for all nutrient substances. The method can be used for solving the problems of a plurality of special water bodies and has wide adaptability; further improving the decomposition effect.
Optionally, the method further comprises: an insulation layer is arranged and wraps the domestic sewage pipeline so as to maintain the temperature in the domestic sewage pipeline.
The domestic sewage is different from industrial sewage, the domestic sewage has higher temperature, the temperature of the sewage enters the pipe network by monitoring the temperatures of a plurality of sewage treatment plants and the sewage pipe network in the whole winter, the temperature of the sewage enters the pipe network is about 30 ℃, and the temperature of the inlet water of the sewage treatment plants, namely the outlet water of the pipe network is 7-9 ℃; meanwhile, the whole winter is monitored in real time: the temperature of the hot spring heating tail water of a certain district is about 42 ℃, the heat-conducting coefficient of the pipeline heat-insulating material is mineral wool with 0.02-0.03W/(m.k), the mineral wool flows to a bath position through a heat-insulating pipeline with 1500 meters, the temperature is reduced by 1-2 ℃, and the heat dissipation in the pipeline can be effectively reduced by using the heat-insulating material. The strain used in the present disclosure can normally survive at a temperature above 5 ℃, but the decomposition efficiency decreases with the decrease of the temperature, so in order to keep the temperature in the sewage pipeline as much as possible, the heat-insulating layer is selectively provided in this embodiment, so that the decomposition strain has a higher decomposition efficiency in a state of keeping the temperature in the domestic sewage pipeline as much as possible.
Specifically, the thermal insulation material selected in this embodiment is, for example, a foam board having a thermal conductivity of 0.03 to 0.04W/(m.k). Other insulating materials such as silica gel, foam or fiberglass, etc. are also possible.
The redundant supernatant and the sludge are reused according to actual conditions or transported to a domestic sewage treatment station for further treatment;
through the continuous operation of the system, the organic matters of the sludge in the domestic sewage pipeline 5 are decomposed, and meanwhile, the problem of blockage of the domestic sewage pipeline is solved. Specifically, the sludge component in the domestic sewage pipeline contains a large amount of organic matters, the large-particle organic matters are decomposed into small-particle matters, the precipitation performance is reduced, and the system greatly increases the flow in the domestic sewage pipeline 5, so that the problem of clogging in the pipeline caused by deposition is solved.
The above examples are merely illustrative of preferred embodiments of the present disclosure, which are not exhaustive of all details, nor are they intended to limit the invention to the particular embodiments disclosed. Various modifications and improvements of the technical scheme of the present disclosure may be made by those skilled in the art without departing from the spirit of the design of the present disclosure, and the modifications and improvements fall within the protection scope defined by the claims of the present disclosure.
Claims (14)
1. A domestic sewage pre-decomposition device, characterized in that the pre-decomposition device comprises:
a delivery conduit disposed within and laid along the domestic sewage conduit;
the pressure pump is arranged at an input port of the conveying pipeline and used for pumping the decomposition liquid into the conveying pipeline;
the input port is arranged at the outlet of the sewage pipeline and is used for inputting the decomposing liquid in the reverse sewage flow direction;
flow control valves provided on the trunk and branch lines at the nodes of the delivery pipe for adjusting the flow rates of the trunk and branch lines;
and the backflow prevention device is arranged at the tail end of the conveying pipeline and used for preventing sewage from flowing back.
2. The domestic sewage pre-decomposition device according to claim 1, wherein the decomposition liquid comprises one or more of added EM bacteria, enzymes and carbon sources.
3. The domestic sewage pre-decomposition device according to claim 1, wherein the decomposition liquid comprises one or more of added lactobacillus, butyric acid bacteria, saccharomycetes, enzymes and carbon sources.
4. The domestic sewage pre-decomposition device according to claim 1, further comprising a biochemical tank disposed at an outlet of the domestic sewage conduit and in communication with the domestic sewage conduit.
5. The apparatus according to claim 4, wherein the biochemical tank comprises a domestic sewage holding tank and a reflux tank, and the domestic sewage holding tank is partitioned from the reflux tank by a partition plate.
6. The domestic sewage pre-decomposition device according to claim 5, wherein an overflow port is further arranged on the upper portion of the partition plate, and the height of the overflow port is adjustable, so that supernatant in the domestic sewage holding tank is conveniently discharged to the reflux tank.
7. The domestic sewage pre-decomposition device according to claim 5, wherein said pressure pump is provided in said reflux tank.
8. The domestic sewage pre-decomposition device according to claim 1, further comprising a sight well provided at a position of the domestic sewage conduit corresponding to the delivery conduit node and end; the observation well comprises a well lid.
9. The domestic sewage pre-decomposition device of claim 8, further comprising an insulating layer, said insulating layer wrapping said domestic sewage conduit, observation well and well lid.
10. The domestic sewage pre-decomposition device according to claim 9, wherein the thermal insulation layer material comprises foam material, silica gel, foam or glass fiber.
11. The domestic sewage pre-decomposition method is characterized by comprising the following steps of:
paving a conveying pipeline, wherein the conveying pipeline is paved along a domestic sewage pipeline and is arranged in the domestic sewage pipeline;
installing a pressure pump, wherein the pressure pump is arranged at an outlet of the domestic sewage pipeline and is used for pumping decomposition liquid into the conveying pipeline;
detecting the type and the quantity of sludge at the outlet of the domestic sewage pipeline, and regulating the added bacterial liquid;
and conveying the decomposition liquid into the domestic sewage pipeline by utilizing the conveying pipeline.
12. The domestic sewage pre-decomposition method according to claim 11, further comprising:
circularly detecting the type and the quantity of sludge at the outlet of the domestic sewage pipeline, and regulating the added bacterial liquid;
and conveying the decomposition liquid into the domestic sewage pipeline by utilizing the conveying pipeline.
13. The domestic sewage pre-decomposition method according to claim 11, wherein the bacterial liquids are divided into two groups: the first group is the obligate anaerobe, the second group is the EM bacterium, the two groups are put in for several hours, and carbon sources are added when bacterial liquid is put in.
14. The domestic sewage pre-decomposition method according to claim 11, further comprising: an insulation layer is arranged and wraps the domestic sewage pipeline so as to maintain the temperature in the domestic sewage pipeline.
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| CN202310622308.9A CN116354521B (en) | 2023-05-30 | 2023-05-30 | Domestic sewage pre-decomposition device and method |
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| JP2002239499A (en) * | 2000-12-12 | 2002-08-27 | Gold Kosan Kk | Waste treatment equipment |
| JP2004344791A (en) * | 2003-05-22 | 2004-12-09 | Harurou Funato | Sewage passage washing method and sewage passage washing apparatus |
| CN1676799A (en) * | 2005-05-30 | 2005-10-05 | 程惠源 | Urban-rural pipeline system engineering sewage discharge and utilization comprehensive system structure |
| CN206090810U (en) * | 2016-09-21 | 2017-04-12 | 南京宁水机械设备工程有限责任公司 | Integration blowdown equipment |
| CN108439616A (en) * | 2018-06-05 | 2018-08-24 | 上海同瑞环保工程有限公司 | A kind of microbial treatment method improving municipal rain pipe, confluence of rainwater and sewage pipe, rain dirt mixed flow tube or municipal wastewater pipe discharge water quality |
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- 2023-05-30 CN CN202310622308.9A patent/CN116354521B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002239499A (en) * | 2000-12-12 | 2002-08-27 | Gold Kosan Kk | Waste treatment equipment |
| JP2004344791A (en) * | 2003-05-22 | 2004-12-09 | Harurou Funato | Sewage passage washing method and sewage passage washing apparatus |
| CN1676799A (en) * | 2005-05-30 | 2005-10-05 | 程惠源 | Urban-rural pipeline system engineering sewage discharge and utilization comprehensive system structure |
| CN206090810U (en) * | 2016-09-21 | 2017-04-12 | 南京宁水机械设备工程有限责任公司 | Integration blowdown equipment |
| CN108439616A (en) * | 2018-06-05 | 2018-08-24 | 上海同瑞环保工程有限公司 | A kind of microbial treatment method improving municipal rain pipe, confluence of rainwater and sewage pipe, rain dirt mixed flow tube or municipal wastewater pipe discharge water quality |
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| CN116354521B (en) | 2023-11-03 |
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