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Different water quality requirements call for different treatment processes. To determine the optimal treatment process for reclaimed water reuse, it is necessary to take into account the quality and quantity of the wastewater, as well as the required quality and quantity of the reclaimed water, while also considering economic and technical factors. Reclaimed water treatment: In most large and medium-sized cities in China, the supply of water is severely insufficient. To address the increasingly severe water shortage problem, it is necessary to carry out wastewater recycling by treating urban wastewater through specific equipment so that it can be reused as a water resource. The components of the present invention include: a regulating tank (1); this regulating tank is connected to an anoxic tank (2) via a sewage lift pump (5), the anoxic tank is connected to an MBR biochemical reaction tank (3), the MBR biochemical reaction tank is connected to a sludge tank, and the sludge tank is connected to a clean water disinfection tank (4). A grid (6) is installed inside the regulating tank. Used for the treatment of reclaimed water. It is understood that when high-quality mixed wastewater or ordinary mixed wastewater is used as the raw water for reclaimed water, due to the low concentration of organic matter in such water, the main objective of treatment is to remove the suspended solids and a small amount of organic matter present in the raw water. In this case, a treatment process based primarily on physical and chemical methods can be employed, or a process that combines biological treatment with physical and chemical treatment can be used. When the wastewater contains fecal matter, the organic matter or suspended solids concentration in the raw reclaimed water is high; therefore, the goal of treatment is to remove both organic matter and suspended solids from the water, and a process that combines two-stage biological treatment with physicochemical treatment is appropriate. When using the secondary treatment effluent from urban sewage treatment plants as a source of reclaimed water, it is advisable to adopt advanced treatment processes based on physical and chemical treatment or in combination with biological treatment. When a membrane treatment process is used, there should be pre-treatment processes to ensure reliable water quality for the membranes, as well as technical measures that facilitate their cleaning and replacement. On the premise of ensuring the quality of reclaimed water, new process flows that are energy-efficient, highly efficient, and proven through experiments or practice can be adopted. Level transmitter instruments: Practices and daily maintenance in reclaimed water treatment processes. When reclaimed water is used for purposes such as replenishing water in heating systems, and conventional treatment processes are not sufficient to meet the required water quality standards, advanced treatment facilities must be added. The sludge, activated sludge, and chemical sludge generated from the treatment of reclaimed water can be discharged to septic tanks for treatment when their volume is small; when the volume is large, mechanical dewatering equipment or other methods should be used for proper disposal. A reclaimed water treatment plant, whose components include a regulating tank. The characteristic of this regulating tank is that it is connected to an anoxic tank via a sewage lift pump; the anoxic tank is connected to an MBR biochemical reaction tank, which in turn is connected to a sludge tank. The sludge tank is connected to a clean water disinfection tank. A grid is installed inside the regulating tank. Its characteristics are as follows: The process steps are as follows – the wastewater flows through mechanical or manual grids with gaps of 1–3 mm, during which large particles of suspended matter and impurities are removed before the water enters the wastewater adjustment tank. There, the quality and quantity of the water are adjusted, after which it is pumped to the anoxic tank using a wastewater lift pump. By intermittently supplying oxygen, acidification, nitrification, and denitrification processes take place, enabling organic substances to be gradually converted into inorganic substances and thus degraded and removed. After hydrolysis and acidification in the anoxic tank, the water enters the MBR biological reaction tank via the inlet. There, the organic substances are degraded by the activated sludge present in the reaction tank, after which the water passes through anti-pollution flat membrane modules. It is then pumped out to the clean water disinfection tank. Excess sludge from the reaction tank is sent to the sludge digestion tank, while the wastewater flows naturally back to the external adjustment tank. The water exiting the MBR reaction tank can be directly sent to the recycled water tank, where disinfectants are added or ultraviolet light and active ion materials are used for disinfection. Once all water quality parameters meet the required standards, the water can be discharged or fed into the municipal water supply network for reuse. The zeolite-biological combined adsorption and regeneration wastewater treatment process is involved in the removal and treatment of organic matter and ammonia nitrogen from urban wastewater, domestic wastewater, and industrial organic wastewater. This process involves adding zeolite or zeolite powder to the adsorption tank, allowing it to mature over a certain period of time to form zeolite or zeolite powder sludge, and then carrying out biological regeneration of this sludge. This process takes advantage of the synergistic physical, chemical, and biological effects of high-concentration, highly active zeolites or zeolite powder sludge to adsorb pollutants in the adsorption tank; at the same time, the zeolites or zeolite powder selectively adsorb and exchange ammonia nitrogen from wastewater. After being bioregenerated in a regeneration tank, they are reused to treat urban sewage, domestic wastewater, and industrial organic wastewater. Compared with other existing wastewater treatment processes, the level-based wastewater treatment process requires less investment, has lower operating costs, occupies less space, operates flexibly, generates less sludge that is easy to treat and dispose of, thus offering significant economic, environmental, and social benefits. Level transmitter instruments: Practices and daily maintenance in the reclaimed water treatment process. In terms of the daily maintenance of instruments used in the reclaimed water treatment process, 1. For those instruments that do not require daily inspection, checks should be carried out at regular intervals. Regular zero-point checks are feasible, as liquid level transmitters come equipped with two-valve or three-valve assemblies, as well as five-valve assemblies, making such checks straightforward and requiring little time. However, for level transmitters used in control systems, regardless of how short the inspection period is, it is still necessary to switch from automatic to manual control; therefore, the zeroing cycle for such level instruments can be longer. Since these inspections require the removal of street inspection equipment, which is rather troublesome, the inspection interval can be extended appropriately if no abnormalities are detected. 2. Regularly drain, condense, and vent the level transmitter. 3. Regularly purge the pressure guiding tubes of the level transmitters that are prone to clogging, and fill them with isolation fluid, etc. 4. Regularly check that the components of the level transmitter are intact, with no severe rust or damage ； The nameplates and labels are clear and error-free ； The fasteners must not be loose, the connectors must make good contact, and the terminal connections must be secure. 5. Regularly conduct on-site measurements of the circuits, including checking whether the input and output circuits are in good condition, whether there are any breaks or short circuits in the circuits, and whether the insulation is reliable. When in operation, the housing of the level transmitter must be properly grounded. Transmitters used to protect systems should have measures to prevent power outages, short circuits, or open outputs. During winter, the insulation and heating of the instrument sampling pipelines should be checked to prevent the sampling pipelines or the measuring elements of the transmitters from being damaged by freezing. Secondly, routine inspections: check the readings of the instruments to see if there are any abnormalities, and whether they are within the specified range ； Some level transmitters do not have on-site indicators; one must go to the control room to check their secondary readings. Any debris around the instrument or dust on its surface should be removed and cleaned promptly. There are issues such as leakage and corrosion at the instrument and process interfaces, pressure transfer pipes, and various valves. Level transmitter instruments: Practices in regenerative water treatment processes and daily maintenance – Materials provided by domestic level transmitters