How to extend the service life of sewage treatment equipment in the chemical industry-Ocpuritech-img

How to extend the service life of sewage treatment equipment in the chemical industry?

by:Ocpuritech     2021-05-29
How to extend the service life of sewage treatment equipment in the chemical industry? Author of the article: In order to protect the environment, now living in sewage treatment equipment is a common water treatment equipment, chemical industry waste water in some major pollution factor: PH, SS, TP. Discharging will cause the water body to become acidic, and it will also have a certain impact on the equipment. How to extend the service life of sewage treatment equipment in the chemical industry? When the sewage treatment equipment in the chemical industry cannot meet the requirements of the polluted effluent, the equipment needs to be cleaned to restore its function. 1. Low-pressure flushing of sewage treatment equipment in the chemical industry. Regular flushing of sewage treatment equipment in the chemical industry with large flow, low pressure and low pH is beneficial to stripping off the dirt attached to the surface of the membrane. To maintain the membrane performance or when the sewage treatment equipment in the chemical industry enters water and the SDI suddenly rises above 5.5, low-pressure flushing should be carried out, and the SDI value should be adjusted to a qualified value before turning on the machine. 2. Outage protection of sewage treatment equipment in the chemical industry Due to production fluctuations, sewage treatment equipment in the chemical industry will inevitably be shut down frequently, and protective measures must be taken when it is out of service for a short or long time. Improper handling will cause the membrane performance to decline and cannot be recovered. Short-term storage is suitable for systems that are out of service for less than 15 days. Low-pressure flushing can be used to protect sewage treatment equipment in the chemical industry. Practice has found that when the water temperature is above 20°C, the water in the sewage treatment equipment of the chemical industry will become smelly and deteriorated after 3 days, and a large number of bacteria will multiply. Therefore, it is recommended that when the water temperature is higher than 20℃, low-pressure flushing every 2d or 1d. When the water temperature is lower than 20℃, low-pressure flushing can be performed every 3d. After each flushing, all inlet and outlet valves on the reverse osmosis device of the water purification equipment should be closed. The sewage enters the quartz sand filter under the action of the high pressure pump, and the water enters the activated carbon filter under the action of water pressure, and then the effluent enters the filter for treatment. This raw water undergoes three-stage treatment. Under normal operation of sewage treatment equipment in the chemical industry, the outlet valve of the high-pressure pump is normally open, and the outlet valve is normally open. In order to prevent the high-pressure pump from excessive water pressure, the return valve between the high-pressure pump inlet valve and the high-pressure pump outlet valve is slightly opened. , Under the pressure of the high-pressure pump, the water is divided into two paths through the osmotic membrane. The concentrated drain is in a slightly open state. The pure water outlet valve is in a normally open state, and the outlet ratio is 2:3 (approximately). The inlet pressure of the high-pressure pump is less than 1.2mpa. The thick drain valve can adjust the ratio of outlet water and the pressure of the reverse osmosis membrane. There are also two bypass pipelines for the pure water outlet pipeline, namely the clean water tank make-up pipe and the chemical dosing tank make-up pipe. In operation, the cleaning tank make-up valve and the chemical dosing tank make-up valve are closed. Other chemical industry sewage treatment equipment valves Normally closed state.
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