What are the performance characteristics of the domestic sewage zero discharge equipment?
What are the performance characteristics of the domestic sewage zero discharge equipment? Author: Sewage enters through the grid by the lift pump into the adjustment tank bioreactor, aeration and oxygenation through open PLC controller, the bioreactor effluent through the circulation pump into the membrane separation unit, concentrate water is returned to the conditioning tank, the membrane After the separated water is chlorinated and disinfected by rapid mixing method (sodium hypochlorite, bleaching powder, chlorine tablets), it enters the reclaimed water storage tank. The backwash pump uses the treated water in the cleaning tank to backwash the membrane treatment equipment, and the backwash sewage returns to the regulating tank. The opening and closing of the lift pump is controlled by the water level in the bioreactor. The filtration operation and backwashing operation of the membrane unit can be controlled automatically or manually. When the membrane unit needs a chemical cleaning operation, close the water inlet valve and the sewage circulation valve, open the medicine washing valve and the medicine circulation valve, start the medicine liquid circulation pump, and perform the chemical cleaning operation. The performance characteristics of the domestic sewage zero discharge equipment: 1. The effluent water quality is excellent. Due to the separation function of the membrane, there is no need to set up other solid-liquid separation equipment such as precipitation and filtration. Efficient solid-liquid separation separates the suspended matter, colloidal matter, and microbial flora lost by the biological unit in the wastewater from the purified water, and can be directly reused without the need for tertiary treatment. Has high water quality safety. 2. Small footprint. The microorganisms in the biological treatment unit of the membrane bioreactor maintain a high concentration, which greatly increases the volume load. The high efficiency of membrane separation greatly shortens the hydraulic residence time of the treatment unit and reduces the area occupied. At the same time, the membrane bioreactor does not need a sedimentation tank and a special filter workshop because of the membrane module, and the system occupies only 60% of the traditional method. 3. Save operating costs. Due to the efficient oxygen utilization efficiency of MBR and the unique intermittent operation mode, the operation time and power consumption of the aeration equipment are greatly reduced, and power consumption is saved. At the same time, because the membrane can filter out harmful substances such as bacteria and viruses, it can significantly save the long-term operating cost caused by the dosing and disinfection. The membrane bioreactor process does not need to add flocculants, reducing operating costs. 4. The system has strong impact resistance and a wide range of applications. Prevent the loss of various microbial flora, which is conducive to the growth of slow-growing bacteria (nitrifying bacteria, etc.), which makes the residence time of some macromolecules difficult to degrade organics longer, which is conducive to their decomposition and various metabolic processes in the system Go smoothly. 5. Small secondary pollution. The biological sludge in the membrane bioreactor can reach dynamic equilibrium during operation, and there is almost no residual sludge discharge. 6. High degree of automation, unattended. Due to the use of membrane technology, MBR greatly shortens the process flow and makes the equipment highly integrated and intelligent through advanced computer control technology. It is currently the domestic sewage treatment and reuse equipment with a high degree of automation. 7. Modular design, zero-discharge domestic sewage equipment is easy to combine freely according to the water volume. Due to the high degree of integration, MBR has formed a standardized and serialized standard equipment, which users can combine and install according to project needs.
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