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During the operation of the Reverse Osmosis system, the fouling caused by different pollutants is significantly correlated with the change in pressure difference. Taking suspended solids, colloids and microbial pollution as an example, such substances usually gather at the head end of a membrane, causing local blockage of the flow channel.

In previous projects, we often encountered cases where failure to follow the Ro Membrane element installation steps caused failures and caused the performance of RO membrane elements to decline.

The main problems that arise during the operation of circulating water are:

(1) Scale: As the circulating water evaporates continuously during the cooling process, the salt concentration in the water continues to increase, exceeding the solubility of certain salts and precipitating. Common scales include calcium carbonate, calcium phosphate, magnesium silicate, etc.

A metering pump is a special volumetric pump that can meet the needs of various strict process flows, and the flow rate can be adjusted steplessly within the range of 0-100%, and is used to transport liquids (especially corrosive liquids). A metering pump is also called a metering pump or a proportional pump. 

Reasons: 1. Flocculation problem. Due to the snail stacker's particular operating principle, the sewage treated by the snail stacker must be treated with drugs in the early stages. After the sewage is flocculated and precipitated, it is pumped into the equipment for dehydration. The compatibility of the agent and the sewage, the proportion of the agent added, the solubility of the agent, etc. will affect the size of the flocs in the sewage.

Initial startup: Low-pressure flushing with pre-treated raw water is required, mainly to remove the air in the pressure vessel. The membrane element should be flushed for at least 6 hours when it is a dry membrane, and at least 30 minutes when it is a wet membrane.

In primary reverse osmosis, alkali is used less to add alkali, and alkali is injected into reverse osmosis inlet water to increase pH. The only alkali agent used is sodium hydroxide (NaOH), which is easy to purchase and is easy to soluble in water.

Raw water pretreatment pipeline system is usually equipped with a fungicide dosing device and temperature, turbidity detection instrument. The core function of fungicide is to effectively inhibit the proliferation of microorganisms and ensure the cleanliness of water pipelines and treatment devices.