[0021] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0022] Such as figure 1 As shown, an ecological toilet sewage treatment system includes a primary sedimentation tank, an anaerobic tank, an anoxic tank, an aerobic tank, and a clean water tank. The sewage generated by the ecological toilet flows into the primary sedimentation tank after being collected by pipelines; The sedimentation tank is used to adjust the water volume and uniform water quality. In this embodiment, in order to prevent floating objects in the primary sedimentation tank from blocking the pipeline pump body and affecting the next treatment process, ensuring the normal operation of the subsequent treatment structure and effectively reducing the treatment load, it is a system To provide guarantee for the long-term normal operation of the water tank, a grid is installed in the primary sedimentation tank, and the grid is used to intercept large floating objects in the sewage. In this embodiment, the grille needs to be cleaned more than once a month to ensure that the garbage that cannot be processed will not adversely affect the equipment.
[0023] Further, the primary sedimentation tank is provided with an overflow weir, and the sewage flows into the anoxic tank through the overflow weir. The anaerobic tank uses anaerobic bacteria to ferment the sewage, and the solid matter is removed by hydrolysis. Degrade into soluble substances, and degrade macromolecular substances into small molecular substances.
[0024] Furthermore, the wastewater treated by the anaerobic tank enters the anoxic tank through the pipeline. When the sewage passes through the sludge layer formed by bacteria, the sewage rises at a constant speed and maintains a certain concentration of anaerobic sludge in the tank. Suspended matter is adsorbed, trapped, biologically flocculated, and biologically degraded, so that the sewage can be clarified while degrading COD; at the same time, the nitrification liquid after returning to the anoxic tank is denitrified and denitrified in the anoxic tank, which improves The removal rate of ammonia nitrogen.
[0025] Further, in order to improve the interception of fine suspended solids in the sewage, the anaerobic tank and the anoxic tank are equipped with sheet-shaped fillers.
[0026] Further, the wastewater treated by the anoxic tank enters the aerobic tank through a pipeline, the aerobic tank degrades and purifies the organic matter in the wastewater through aerobic organisms, and the aerobic tank includes a tank body, The mold base, the filter membrane, the water distributor and the air distribution system are installed in the tank body, the filter membrane is installed in the center of the tank body, and the filter membrane is an MBR membrane; in this embodiment, MBR membrane has the characteristics of being unsuitable for clogging and easy to clean. The MBR membrane can effectively isolate the pollutants in the water and make the effluent water quality good. At the same time, the MBR membrane can also ensure stable water output and continuous flow.
[0027] The mold base is provided with a biofilm, which is composed of mycelium, filamentous bacteria, fungi, protozoa and metazoa, and the formation, growth, proliferation and shedding of the biofilm are alternately performed to ensure stable processing ability.
[0028] The air distribution system includes a fan and an aeration tube, the aeration tube is installed at the bottom of the tank body, the aeration tube is connected with the air outlet end of the fan, and the fan can be aerobic bacteria in the aerobic pool It provides oxygen for survival, and the agitation of the air flow generated by the aeration tube can accelerate the renewal of the biofilm, so that it often maintains high activity, and can prevent clogging. In this embodiment, a microporous aeration tube is used. The dissolved oxygen transfer rate of the microporous aeration tube is higher than that of other aerators. The biggest feature is that it is not aging, light in weight, and has a long service life. At the same time, it has corrosion resistance and is not easy to block. Etc.
[0029] Further, in order to accelerate the degradation and purification of most of the organic matter in the sewage in the aerobic tank, the aerobic tank is equipped with sheet-shaped fillers, and the aerobic bacteria uses the filler as a carrier, and uses the organic matter in the sewage as food to remove the sewage. The organic matter in it is decomposed into inorganic salts to achieve the purpose of purification.
[0030] Further, a reflux pump is provided in the aerobic tank, a reflux pipe is connected to the water outlet end of the reflux pump, and the other end of the reflux pipe is placed in the primary sedimentation tank.
[0031] Further, the waste water after the degradation and purification treatment in the aerobic tank enters the clean water tank through the pipeline for storage or discharge.
[0032] Further, in this embodiment, the size of the primary sedimentation tank, anaerobic tank, anoxic tank, aerobic tank, and clean tank are all 500*400*1000 mm.
[0033] Further, the ecological toilet sewage treatment system further includes a control system, the control system includes a PLC controller, a power module, a plurality of control valves, a return pump, and a switch switching circuit, and the power module provides a working voltage for the control system, The control valve, the reflux pump and the switch switching circuit are all connected to the IO port of the PLC controller. The control valve is installed on the pipeline between the anaerobic tank, anoxic tank, aerobic tank, and clean water tank. The switching circuit can be switched between automatic and manual, and electrical equipment such as control valves and reflux pumps can be set to automatic operation or manual control; various electrical equipment are equipped with circuit short-circuit and overload protection, and indicator lights are set to show the working status of each electrical equipment .
[0034] Further, in this embodiment, an ecological toilet sewage treatment system adopts the following treatment processes:
[0035] S1: Sedimentation filtration: The wastewater produced in the ecological toilet is collected through the pipeline and flows into the primary sedimentation tank, and the large floating objects in the sewage are intercepted by the grid for preliminary sedimentation filtration;
[0036] S2: Fermentation: Anaerobic bacteria are used for fermentation in anaerobic and anoxic tanks to remove solid matter and suspended matter in wastewater;
[0037] S3: Degradation and purification: In the aerobic tank, aerobic bacteria use the filler as a carrier to decompose the organic matter in the sewage into inorganic salts.
[0038] 8. The ecological toilet sewage treatment process according to claim 7, wherein the step S2 includes one or more of the following non-sequential treatment steps:
[0039] A: Hydrolysis: in the anaerobic tank, the solid matter in the sewage is degraded into soluble matter by anaerobic bacteria, and the macromolecular matter is degraded into small molecular matter;
[0040] B: Adsorption: The sludge produced by fermentation treatment can adsorb, net, biologically flocculate and biologically degrade the suspended matter in the sewage;
[0041] C: De-Ammonia Nitrogen: The nitrification liquid after the reflux of the anoxic tank undergoes denitrification and denitrification in the anoxic tank to remove the ammonia nitrogen in the sewage.
