As one of the important components of water treatment, quartz sand filter material. Does anyone know the service life of this quartz sand? Of course, if not asked, many friends may not consider it. Currently, the service life of quartz sand used in water treatment is generally 2-3 years, and it depends on the on-site usage situation for replacement.
The application of quartz sand as a filter material, which is combined with a filter container to intercept particulate impurities such as suspended solids and colloids in water, thus playing a filtering role. It can be mainly divided into the following categories:
1. Ordinary quartz sand filter material: It is mainly used in sewage treatment and has been used for three to five years without any problems. As long as the quartz sand is prevented from losing, it is not important if it is contaminated, because in sewage treatment, sludge can undergo aerobic or anaerobic respiration to degrade the pollutants in the sewage.
2. Refined quartz sand filter material: Used in pure water treatment. In sand filters, it usually needs to be replaced within 2 to 3 years. After being contaminated, pollutants can no longer effectively filter the quartz sand and can only be replaced. The quartz sand filter material has passed the ISO9001-2000 quality system certification. It is stable in neutral and acidic water with values within the range, but slightly soluble in alkaline water. The increment of SiO2 in chemical water treatment does not exceed 2mg/L.
Whether it is industrial water or pure water treatment, many of them use natural quartz sand filter materials during filtration. The service life and replacement cycle of quartz sand filter materials for water treatment are also directly affected by different locations, different water quality, different water flow rates, and the amount of water produced per day, which directly affects the service life of quartz sand filter materials. Quartz sand filter material, as a type of natural filter material, after more than two years of operation, due to untimely backwashing by the unit and the unclean water quality itself, the quartz sand filter material cannot work properly in water, and is burnt to death by dirt, which has formed a hardening, directly affecting the filtration rate. The water flow is particularly slow, resulting in abnormal water supply. So the quartz sand filter material needs to be replaced in a timely manner.
There is no specific time, but it mainly depends on the quality of the raw water. The quality of the raw water is good, and the quartz sand is regularly backwashed during operation to maintain its cleanliness. It can be used for a longer period of time, ranging from 3 to 4 years. If the water quality is poor, the time taken is relatively short. Generally, if the backwashing frequency is greater than once every 24 hours, it can continue to be used. If it is less than 6-8 hours, it indicates that the quartz sand needs to be replaced. At the same time, it also depends on the requirements for the effluent water quality. If frequent backwashing occurs and the effluent water quality does not meet the requirements, the quartz sand needs to be replaced.
