Resourceful treatment process of sewage and its application in desertification control

Abstract

The application relates to the technical field of ecological resource treatment, in particular to a fresh water and organic matter ecological resource treatment process and a desert treatment method, which comprises the following steps: step 1, constructing a sewage backtracking pipe network; step 2, ecological resource backtracking, in the sewage backtracking pipe network, biological strains are inoculated to carry out sewage ecological resource treatment; and step 3, ecological resource utilization, the sewage backtracking pipe network further comprises a plurality of resource branch networks located at the terminal section of the sewage trunk network, and the resource branch networks can use the treated ecological resources for desert treatment; through the construction of the sewage backtracking pipe network and the inoculation of specific biological strains, the application realizes the ecological resource treatment of sewage, which not only purifies the sewage, but also recycles the treated fresh water and biological resources; the application promotes the circular economy, changes the sewage into resources that can be used for desert treatment, and reduces the negative influence on the ecological system and resource waste in the traditional sewage treatment process.

Description

Technical Field

[0001] This application relates to the technical field of wastewater resource recycling, specifically to the technology of freshwater and organic matter resource utilization and its application in desertification control. Background Technology

[0002] Earth is a vast material cycle system: under the influence of the sun, various plants absorb simple nutrients and convert chemical energy into biological energy; animals ingest plants and convert them into protein; animal excrement and animal and plant carcasses are decomposed by microorganisms into simple nutrients, completing the material cycle. From this perspective, there is no truly meaningful waste in this world.

[0003] Urban rivers are open bodies of water, typically characterized by narrow surfaces, long courses, and tidal characteristics, especially in coastal and near-shore rivers. The discharge of wastewater into urban rivers has increased significantly, with common pollutants including mercury, lead, chromium, nickel, zinc, and copper. Heavy metal deposits gradually accumulate in riverbed sediments, a major cause of black and odorous rivers and the destruction of aquatic ecosystems.

[0004] Furthermore, since the formation of the land, clean rainwater has continuously washed away its limited organic matter, transporting it to the ocean. This cycle repeats itself, causing terrestrial vegetation to degrade due to nutrient loss, leading to gradual and increasingly severe desertification. In other words, from the perspective of the Earth system, desertification is a process of increasing entropy. Without other energy inputs to create negative entropy, it is difficult to reverse this trend until all landmasses are desertified. Therefore, it is necessary to find some means to slow down this process.

[0005] Based on the above, there is an urgent need for a freshwater and organic matter ecological resource utilization process and a desert oasis transformation method to address the major environmental problems facing my country, such as water pollution, land desertification, arable land shortage, and water scarcity and uneven distribution. Summary of the Invention

[0006] The purpose of this application is to provide a wastewater resource-based treatment process and a method for desertification control, in order to address the major environmental problems facing my country, such as water pollution, land desertification, arable land shortage, and the scarcity and uneven distribution of freshwater resources.

[0007] This application is achieved through the following technical solution:

[0008] The wastewater resource recovery process includes the following steps: Step 1, constructing a wastewater backflow network, which includes a main wastewater network and several branch wastewater networks. The branch wastewater networks are located at the beginning of the main wastewater network and are used to collect wastewater from the beginning of the main wastewater network into the main wastewater network; Step 2, wastewater resource recovery, during Step 1, within the main wastewater network, the wastewater is degraded using the backflow time of the wastewater backflow network to obtain freshwater and biological resources; Step 3, resource utilization of freshwater and organic matter, during Step 2, the wastewater backflow network also includes several resource branch networks located at the end of the main wastewater network, which can use the treated freshwater and biological resources for desertification control.

[0009] Furthermore, the RhP engineered strain was used to inoculate the wastewater traceability network constructed in step 1.

[0010] Furthermore, the wastewater resource recovery process in step 2 includes the periodic and continuous release of RhP engineered strains into the wastewater trunk line, and the purification process is completed through the RhP engineered strains.

[0011] Furthermore, the backflow process of the sewage trunk line includes the inoculated RhP engineered strains gradually completing the purification process as the sewage is backflowed to the desert.

[0012] The application of wastewater resource utilization technology in desertification control involves purifying wastewater during its transport through a back-tracking pipeline network, ultimately yielding clean freshwater and useful biological resources for desertification control.

[0013] Furthermore, the freshwater obtained is used for irrigation in desertification control.

[0014] Furthermore, the application of the obtained biological resources in desertification control can provide sufficient nutrients for barren deserts.

[0015] Furthermore, freshwater and organic matter can be recycled on land.

[0016] Compared with the prior art, this application has the following advantages and beneficial effects:

[0017] 1. This application constructs a wastewater backflow pipeline network and inoculates specific biological strains (such as RhP engineered strains) to backflow wastewater into the desert, transforming wastewater into a resource that can be used for desertification control. This recycling greatly reduces resource waste and also reduces the negative impact on the ecosystem and resource waste caused by traditional wastewater treatment processes.

[0018] 2. The RhP engineered strains obtained through screening and domestication in this application utilize pollutants such as nitrogen, phosphorus, and sulfur in wastewater as nutrients. By taking advantage of sufficient time for wastewater to return to its source, they transform pollutants into useful biological resources, such as algae. The clean freshwater and active organisms obtained at the end of the process are the most needed resources for solving desertification. Allowing freshwater and organic matter to circulate on land significantly slows down the rate of desertification, benefiting humankind.

[0019] 3. This application simultaneously addresses several major global challenges, including the unsustainability of traditional wastewater treatment technologies, freshwater scarcity, reduction of arable land, and desertification, and can serve as an effective method for solving global water shortages and desertification. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the embodiments of this application and form part of this application, do not constitute a limitation on the embodiments of this application. In the drawings:

[0021] Figure 1 This is a schematic diagram of the method flow of this application. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with embodiments and accompanying drawings. The illustrative embodiments and descriptions are for illustrative purposes only and are not intended to limit the scope of this application. It should be noted that this application has been practically verified in numerous wastewater treatment engineering projects.

[0023] Example 1:

[0024] As attached Figure 1 As shown, the wastewater resource utilization process includes the following steps: Step 1, constructing a wastewater backflow network, which includes a main wastewater network and several branch wastewater networks. The branch wastewater networks are located at the beginning of the main wastewater network and are used to collect wastewater from the beginning of the main wastewater network into the main wastewater network; Step 2, wastewater resource utilization, during Step 1, within the main wastewater network, the wastewater is degraded using the backflow time of the wastewater backflow network to obtain freshwater and biological resources; Step 3, resource utilization of freshwater and organic matter, during Step 2, the wastewater backflow network also includes several resource branch networks located at the end of the main wastewater network, which can use the treated freshwater and biological resources for desertification control.

[0025] It should be noted that due to the rapid increase in population and inappropriate and unreasonable human activities, large amounts of untreated human, poultry, and livestock excrement, as well as domestic sewage and industrial wastewater, are indiscriminately discharged into open water bodies, far exceeding the natural self-repair and self-purification capabilities of rivers, lakes, and seas. When pollution exceeds a certain limit, most algae with poor pollution tolerance die off, but Microcystis, Alternaria flocculationii, and Anabaena, taking advantage of their tolerance to high concentrations of pollution and suitable water temperatures, begin to grow rapidly and quickly become dominant species, subsequently erupting and forming "algal blooms" in lakes, causing widespread damage.

[0026] Furthermore, with the continuous development of industrialization and urbanization in modern society, the discharge of industrial wastewater and domestic water has led to widespread organic pollution in river bodies, turning them into eutrophic waters. Microorganisms in these waters consume oxygen and multiply rapidly, causing the water to turn black and smelly, forming black and odorous water bodies. The main characteristics of black and odorous water bodies are strong reducing properties; pollutants severely contaminate the water, accompanied by a foul odor, making them unsuitable for aquatic life. Aquatic vegetation degrades or even becomes extinct, with only a few pollution-tolerant species such as phytoplankton, zooplankton, and benthic animals remaining. The black and odorous nature of these water bodies not only damages river ecosystems but also seriously affects people's lives and livelihoods.

[0027] Based on the aforementioned issues, the applicant proposes an ecological resource recovery process for freshwater and organic matter. By constructing a wastewater backflow network and inoculating specific microbial strains (such as the RhP engineered strain), the ecological resource recovery of wastewater is achieved. This not only purifies the wastewater but also allows for the recycling of treated water and sludge as resources, promoting a circular economy and transforming wastewater into resources usable for desert oasis restoration. This recycling significantly reduces resource waste and minimizes potential negative impacts on the ecosystem during wastewater treatment. It should also be noted that in this embodiment, both the wastewater branch network and the wastewater main network utilize existing channels that have been modified. Another preferred implementation method in this embodiment is to construct sewage pipelines through existing channels. The facultative heterotrophic RhP bacteria, whose growth is not limited by dissolved oxygen in the water, directly reproduce and proliferate using organic matter in the polluted water as a carbon source and hydrogen donor by regulating different metabolic pathways. On the one hand, through direct saprophytic transformation, the nutrient supply to the highly polluted, autotrophic cyanobacteria that are difficult for fish to digest is cut off. On the other hand, the rapidly proliferating RhP bacteria are consumed as food for zooplankton, which are then ingested by fish, shrimp, and shellfish. The fish, shrimp, and shellfish are then captured by terrestrial animals, thus expelling the pollution from the water body. Clearly, this establishes a rapid food chain, accelerates the material cycle in the polluted water, and enhances the water body's self-purification capacity.

[0028] It should be noted that in step 1, the inoculated microbial strain is an engineered RhP strain. It should also be noted that research has found that RhP bacteria can assimilate NH4+. 4+RhP bacteria play a crucial role in reducing total phosphorus (TP) in water bodies. They can synthesize various amino acids required by the body through specific reactions. During reproduction, RhP bacteria consume large amounts of phosphorus as structural material for their cells, thus playing a vital role in reducing TP in water. RhP bacteria do not consume oxygen when absorbing organic matter, and the dissolved oxygen saved in the water can oxidize H2S into elemental S, which is stored inside the cells or deposited outside, reducing toxicity. When growing in environments rich in nutrients such as nitrogen and phosphorus, RhP bacteria not only grow and reproduce rapidly but also store temporarily unusable nutrients taken from the environment by generating a unique inclusion called PHB particles.

[0029] It should be noted that the wastewater resource utilization process in step 2 includes the periodic and continuous release of RhP engineered strains into the wastewater trunk line, and the purification process is completed through the RhP engineered strains.

[0030] Step 2 also includes determining the total amount and proportion of nitrogen, phosphorus, and sulfur in the initial section of the wastewater dry network, and preparing an industrial-scale culture medium based on the measurement results. It should also be noted that a series of chemical analysis techniques are used for quantitative elemental analysis, such as spectroscopic methods (e.g., UV-Vis spectroscopy or atomic absorption spectroscopy), chromatographic methods (e.g., ion chromatography), or wet chemical methods (e.g., the Kjeldahl method for total nitrogen determination and molybdenum blue spectroscopy for total phosphorus determination). Sulfur determination involves wet chemical methods or ion chromatography. Based on the measurement results, the nutrient concentration in the culture medium can be precisely adjusted to meet the growth requirements of specific microbial communities. Different microbial strains have different nutrient requirements; therefore, optimizing the culture medium according to the characteristics of RhP engineered strains can improve their growth rate and biological treatment efficiency.

[0031] It should be noted that the backflow process of the sewage trunk line includes the gradual purification process of the inoculated RhP engineered strains as the sewage is backflowed to the desert.

[0032] It should also be noted that during the ecological resource recovery process in step 2, specially cultivated and domesticated RhP engineered strains are periodically and continuously introduced into the sewage main network. These strains come into contact with the sewage during its flow, utilizing their biodegradation capabilities to decompose, transform, and absorb pollutants such as organic matter, nitrogen, and phosphorus in the sewage, thereby achieving biological purification of the sewage. This continuous biological treatment process not only optimizes the purification effect of sewage during transportation but also enhances the ecological resource recovery capacity of the entire sewage system, that is, converting pollutants in sewage into recyclable resources through biological transformation.

[0033] It should also be noted that step 2 further includes water quality monitoring at the beginning of the wastewater main network. When water quality changes, samples are taken from the aerobic, facultative, and anaerobic layers of the water body, and aerobic, facultative, and anaerobic adaptive bacterial strains are screened out respectively. These adaptive strains are then inoculated into the industrial culture medium for acclimatization to obtain RhP engineered strains. It should also be noted that step 2 includes continuous water quality monitoring at the beginning of the wastewater main network to promptly capture changes in water quality parameters such as nutrient concentration, temperature, pH, or other key indicators. Once water quality changes are detected, technicians will sample different redox potential regions (i.e., aerobic, facultative, and anaerobic layers) in the wastewater and isolate aerobic, facultative, and anaerobic bacterial strains adapted to these specific conditions under laboratory conditions using a microbial screening procedure. The selected strains are then inoculated into a specially designed industrial culture medium and acclimatized under controlled conditions to enhance their adaptability to the specific wastewater environment and treatment efficiency, ultimately obtaining a series of optimized and highly adaptable RhP engineered strains to improve the performance of the wastewater treatment process.

[0034] A method for the ecological resource utilization of freshwater and organic matter for desertification control includes: utilizing purified water sources for desertification control through several resource networks. The ecological resource utilization system constructed in this embodiment distributes water purified by RhP engineered strains to desert areas. This process includes advanced water quality monitoring and distribution technologies to ensure that the purified water meets standards suitable for desert irrigation. The resource network design fully considers the effective distribution, storage, and transportation of water sources, while maximizing water use efficiency, promoting ecological restoration and vegetation growth in desert areas. This not only improves the desert environment but also provides sustainable ecosystem services to the local area, such as improving microclimates, providing biodiversity habitats, and potential agricultural water use.

[0035] Example 2,

[0036] Another preferred embodiment of this invention is as follows: the freshwater and organic matter ecological resource utilization process includes the following steps:

[0037] It should be noted that during the collection process of sewage branch networks, large suspended solids and sludge in the sewage are not removed, which will increase the load on subsequent treatment processes, especially biological treatment units, which may experience a decrease in treatment efficiency due to excessive pollution load. Secondly, untreated sewage may contain grease, fine particles, and other substances, which can clog pipes, damage pumps and other mechanical equipment, and increase maintenance costs. Therefore, before implementing ecological resource recovery treatment processes, the sewage can be pre-treated by the existing sewage treatment system before being injected into the backfill network.

[0038] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this application. It should be understood that the above description is only a specific embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A resource recovery process for sewage, characterised by: The method comprises the following steps: Step 1, constructing a sewage backtracking pipe network, which comprises a sewage trunk network and a plurality of sewage branch networks, the plurality of sewage branch networks are located at a starting section of the sewage trunk network, and are used for collecting sewage at the starting section into the sewage trunk network; Step 2, sewage resourceization, during the process of step 1, clean freshwater and biological resources are obtained by degrading and converting sewage in the sewage trunk network by using the backtracking time of the sewage backtracking pipe network; the pollutants in the sewage are converted into recyclable resources by biological conversion; Step 3, resourceization and utilization of freshwater and organic matter, during the process of step 2, the sewage backtracking pipe network further comprises a plurality of resource branch networks located at a terminal section of the sewage trunk network, and the resource branch networks can use the treated freshwater and biological resources for desert governance; The RhP engineering strain is inoculated in the sewage backtracking pipe network in step 1; The sewage resourceization process in step 2 comprises periodically and continuously feeding the RhP engineering strain in the sewage trunk network, and the RhP engineering strain completes the sewage purification process by using the backtracking time and space; The RhP engineering strain contacts with the sewage during the sewage flow process, and degrades, converts and absorbs organic matter, nitrogen and phosphorus in the sewage by using the biological degradation capacity; The RhP engineering strain is obtained by breeding and domesticating adaptive bacteria strains selected from aerobic, facultative and anaerobic bacteria, and the strain can directly use organic matter in the polluted water area as a carbon source and a hydrogen donor to reproduce and proliferate under aerobic and anaerobic conditions by adjusting different metabolic pathways, and the rapidly proliferated RhP bacteria are consumed as food of plankton; The sewage of the sewage backtracking pipe network is sewage after removing large particle suspended solids and sludge; The customization selection and domestication method of the RhP engineering strain is as follows: The total amount and proportion of nitrogen, phosphorus and sulfur elements at the starting section of the sewage trunk network are determined, and an industrial culture medium is prepared according to the determination results; When the water quality changes, the oxygen-consuming layer, the facultative layer and the anaerobic layer of the water body are sampled, and the aerobic, facultative and anaerobic adaptive bacteria strains are selected respectively; The adaptive bacteria strains are inoculated in the industrial culture medium to obtain the RhP engineering strain.

2. The resource recovery process for sewage according to claim 1, characterized in that: The backtracking process of the sewage trunk network comprises that the inoculated RhP engineering strain gradually completes the purification process during the process of backtracking the sewage to the desert.

3. Application of the resourceful treatment process of sewage in desertification control, characterized in that: The sewage resourceization treatment process according to any one of claims 1-2, wherein the sewage is purified during the transportation process in the backtracking pipe network, and finally clean freshwater and useful biological resources are obtained for desert governance.

4. Use of the resource recovery process of wastewater according to claim 3 in desert reclamation, characterized in that: The application of the clean freshwater in the desert governance is irrigation.

5. Use of the resource recovery process of wastewater according to claim 3 in desert reclamation, characterized in that: The application of the useful biological resources in the desert governance is to provide sufficient nutrients for the barren desert.

6. Use of the resource recovery process of sewage according to claim 4 or 5 in desert reclamation, characterized in that: The freshwater and organic matter are circulated on land.

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