Water is the source of life and the basis of all living things. As one of the most important natural resources, the sustainable use of water resources is the basic condition for social, economic and environmental development. With the acceleration of urbanization, the challenges and requirements of municipal sewage treatment are becoming increasingly stringent.

In order to curb the deteriorating trend of water environment, various regions have invested in the construction and reconstruction of municipal water treatment and sewage treatment facilities to better improve and protect rivers, lakes and groundwater resources.

Due to natural and human factors, surface water usually contains various impurities such as suspended solids, colloids, microorganisms, etc. The raw water obtained from nature needs to be purified through coagulation, sedimentation, filtration and disinfection before it can be used to meet the needs of human production and life.

On the other hand, a large amount of domestic sewage generated in daily life will also be discharged into the sewer. Domestic sewage contains a large number of organic and inorganic compounds. If the sewage is discharged directly, it will cause serious pollution to rivers, lakes and groundwater.

With the increasing shortage of fresh water resources, the increasing discharge of municipal sewage and the increasingly serious problem of water pollution, domestic sewage treatment has become extremely necessary.

In this series of water purification and sewage treatment processes, it is necessary to add a variety of water treatment agents, such as flocculants, coagulant aids, bactericides and disinfectants, as well as acids or alkalis, to effectively purify raw water or sewage by physical, chemical and biological methods.

Influenced by season, rainfall, time, residents' water use habits and other factors, the water quality often has large dynamic fluctuations, which requires scientific and effective automatic control of reagent dosing.

In order to ensure that the effluent is stable and up to standard, it is necessary to accurately and timely adjust the actual water quantity and quality, and the dosage of chemicals. If the medicament is added excessively, it will directly affect the water quality, lead to the waste of medicament, and increase the operating cost. At this time, the accurate metering of metering pump plays an important role in the water treatment process.

Modern water plants need to achieve automatic and precise control of dosing. The key to the accurate dosing and control of chemicals depends largely on the high-quality metering pump.

Water treatment chemicals usually have some corrosive liquid. The diaphragm in the metering pump that separates the agent from the pump body is very important. The diaphragm is usually made of plastic. The continuous reciprocating motion of the diaphragm during the operation of the metering pump is likely to cause fatigue and damage to the diaphragm.

Diaphragm, as one of the most important wearing parts of metering pump, usually has a service life of only half a year to one year and needs frequent maintenance. In the process of diaphragm replacement, maintenance personnel need to be very careful. Once exposed to corrosive agents, it is easy to cause some personal injury. Therefore, the service life and quality of diaphragm are very important.

In response to these problems, the GLM series mechanical diaphragm metering pump products elaborately developed by American Pastida Company are widely praised by the market for their heavy load, high strength, less maintenance and other characteristics.

Pulsa GLM series mechanical diaphragm metering pump 1. Multiple pump head materials are available

According to different application scenarios, GLM series mechanical diaphragm metering pumps can choose a variety of pump head materials, such as FPP, PVDF, 316L stainless steel and special pump heads for sodium hypochlorite dosing. For special applications, double diaphragm design is available.

For the working conditions with large sewage treatment capacity and large dosage, GLM series mechanical diaphragm metering pump can also choose a super flow metering pump with a maximum design flow of 3600 liters/hour per pump.

2. High strength composite diaphragm

GLM mechanical diaphragm metering pump adopts high-strength composite diaphragm in its structural design to effectively extend its service life. The double-sided PTFE coating of composite diaphragm effectively increases chemical corrosion resistance and lubrication of diaphragm. Diaphragm with double water line seal design can enhance leakage protection.

GLM series mechanical diaphragm metering pump uses high-strength diaphragm 3. Unique automatic locking function

After the metering pump has been running for a long time, due to mechanical wear and other reasons, it is also easy to produce stroke drift, which will lead to unstable dosing amount, which will affect the accuracy of dosing, thus affecting the quality of effluent. The unique automatic locking function of GLM series mechanical diaphragm metering pump effectively solves the problem of stroke drift.

Extended reading: Viking , VIKING's authorized agent, VIKING gear pump