According to statistics, the power consumption of the pump in the sewage treatment plant accounts for about 35% of the total electricity consumption of the whole plant. Pumps as one of the sewage treatment equipment, power consumption is so high. Therefore, whether the pump can operate normally and efficiently is an important factor that directly affects the sewage treatment efficiency and operating cost of the sewage treatment plant.

Pump selection requirements

In the actual production of domestic sewage treatment plant operation, the pump often can not operate efficiently, energy consumption, and its control is relatively backward. Due to the complex water quality of industrial sewage, the pump requirements more stringent, summed up the industrial wastewater treatment industry optimization of the pump selection requirements are as follows:

1) Reasonably determine the project flow Q and lift H value, the pump operating point of operation should be strictly controlled within the high-efficiency area.

2) Keep the device under multi-year average head lift with high efficiency and low usage fee.

3) Under the check of the highest lift, the pump can still guarantee normal and efficient work.

4) Pump motor can withstand long-term full load operation. To protect the motor to the maximum extent, even in the event of accidental unplanned operation, the cable is damaged and the motor is still under water, and no moisture can enter the motor and the junction box at the cable entry.

Application of water pump

Sewage treatment plants commonly used pumps are centrifugal pumps, screw pumps, diaphragm metering pumps and screw pumps, the following is several types of sewage treatment plants commonly used pumps and the use of the occasion:

(1) PW horizontal centrifugal pump this water

Pump efficiency of about 50%, 80 ℃ can be transported below the fiber or other suspended solids containing wastewater, the pump is more suitable for small sewage treatment plants.

(2) WL vertical sewage pump this pump

The efficiency of about 75%, can enhance the higher temperature and corrosive wastewater, the pump can also be used to enhance the impurities of sewage or muddy water, so this pump is more suitable for industrial wastewater treatment plant.

(3) ZLB vertical axial flow pump This pump has the characteristics of low lift, large flow, can be used for large-scale sewage treatment plants.

(4) QZ series submersible axial flow pump

Pump efficiency of 75% to 83%, with low head, large flow, easy to install and can not set the pump room features, so this pump can be used to enhance the return sludge.

(5) QW series submersible sewage pump The pump efficiency of 70% to 85%, can be transported below 60 ℃, pH 4 to 10 in the industrial wastewater, the pump can be used to enhance the impurities sewage mud water, the pump is also more suitable In industrial wastewater treatment plant.

(6) QH series submersible sewage pump This pump has the advantages of high lift, large flow, suitable for large-scale sewage treatment plant.

(7) Helical pump with low power consumption This pump has the advantages of low head, high efficiency, can be used to enhance the return sludge.

(8) Screw pump has a low flow This pump has a high lift characteristics, can be used as dosing or delivery concentration greater viscosity sludge.

(9) diaphragm pump piston pump with a low flow This pump has a high lift characteristics, can be used as dosing or delivery of low-flow sludge.

Industrial wastewater treatment plant for the choice of pumps

First of all, it is necessary to strengthen the optimization and selection of pumps; Secondly, combined with advanced and efficient energy-saving technologies such as variable frequency speed regulation, optimized combination and sewage source heat pump, energy saving technologies are retrofitted to pump equipment so as to save energy and reduce consumption. Finally, Also consider the pump corrosion and acid and alkali resistance, because of the complex water quality of industrial sewage, with high suspended solids content, strong acid-base and other characteristics.

Outdoor Sofa

Outdoor sofas differ from indoor sofas in that they are a component of the urban landscape environment and
have the characteristics of "publicness" and "communication" in a general sense. As an important part of the
overall home decoration, the outdoor sofa becomes part of the resting facilities and part of the urban
landscape facilities.

What is the size of the outdoor sofa?
The sofa is generally for friends who have a balcony, in fact, putting a casual sofa on the balcony is a good
choice, in the sofa can lie down to rest can also sit and chat with friends to see the outdoor scenery, it is a
very pleasant life.

Outdoor sofas also have a lot of materials, some use aluminum manufacturing surface into the surface of
the paint, and some are made hand-woven, using environmentally friendly imitation rattan, which looks
elegant and stylish atmosphere.

What is the size of the outdoor sofa, and how to design? Generally, for a single sofa or double sofa, ordinary
general double using 1300 * 870 * 910mm, single using 710 * 870 * 910mm, in fact, the outdoor sofa size
specifications on the market are different, you can be based on the size of the placement area to choose.

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