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What should we pay attention to when operating a zero-discharge desulfurization wastewater system? Come and collect it!
Release time：
2025-12-01 13:47:49
Zero discharge of desulfurization wastewaterWhat should be paid attention to when operating the system? Let's take a look together. The application of zero-discharge technology in desulfurization wastewater treatment not only achieves zero wastewater discharge in the sense, but also realizes a circular economy, which has important promotion significance. Do you know what you should pay attention to when operating a zero-discharge desulfurization wastewater system?
(1) Equipment maintenance before operation. For wastewater treatment equipment, regular inspections must be carried out and preparations must be made for operation and maintenance. Regularly organize the dosing system and check the amount of medicine in the medicine box. Regularly maintain metering pump pipelines to ensure accuracy. Check the pH measuring electrode regularly and clean and adjust it in time.
(2) Equipment maintenance during operation. During operation, the protective device in front of the pump should be checked in real time to prevent excessive residue on the grille and hinder the flow of water. Due to the high content of suspended solids in desulfurization wastewater, the system must be cleaned in time every time it stops running. There is a cleaning location. From the waste pump outlet to the pH adjustment tank, the lime milk dosing system pipeline, the condensation tank to the purifier pipeline, and the purifier mud transportation pipeline. In addition, if the pH adjustment tank, reaction tank and flocculation tank are separate boxes, it is necessary to enlarge the continuous pipes between the boxes and install a water level gauge on the boxes.
(3) Main control of desulfurization wastewater treatment system. Open-loop control is implemented based on the wastewater flow, and the dosage of chemicals added in the reaction is adjusted proportionally. Water pH and turbidity adjustment enables water compliance through online monitoring to adjust the amount of HGI added. If the turbidity of the effluent water is unqualified, please return the water flowing out of the water tank to the reprocessing tank to stop the inflow of waste water and ensure the automatic discharge of mud in the pond.
Zero discharge of desulfurization wastewaterThe integrated treatment process is a new zero-discharge treatment method for desulfurization wastewater developed based on the overall flue gas process plan of coal-fired boilers. The zero-discharge integrated treatment process and equipment for desulfurization wastewater uses a wastewater pretreatment device to perform preliminary solid-liquid separation of desulfurization wastewater. The wastewater flows into the flue behind the air cleaner and in front of the vacuum cleaner. After the two-fluid sprayer plateau is magnetized, under the heating effect of the high-temperature flue gas waste heat, the water is completely evaporated and evaporated into water vapor in the air. The salt is determined as solid particles based on the evaporation of water, and is captured by the vacuum cleaner into the dry material to achieve "extinction". At the same time, it increases the humidity of the smoke, improves the efficiency of the dust collector, reduces the process water consumption of the desulfurization absorption tower, and maximizes water and energy conservation.
Zero discharge of desulfurization wastewaterThe equipment is divided into acquisition and zero discharge according to the discharge standards. The wastewater treatment process is divided into general treatment process of desulfurization wastewater and zero discharge treatment process of desulfurization wastewater.
Zero-discharge equipment for desulfurization wastewater: conventionally treated water is mixed with EDR concentration, freshwater separation, freshwater inflow regulation ground and circulation system drainage, domestic water, pre-treatment industrial wastewater, initial rainwater, etc., used for AO biochemical ground biological denitrification, biological treatment of water "UF "RO" water reuse process, RO fresh water is used in the water inlet section of the boiler feed water treatment system, RO concentrated water flows back to the EDR water inlet end, and the EDR concentrated water enters the evaporation and salt precipitation equipment.
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