The self-provided sewage treatment plant is the sewage (waste) water discharged from the pollution source. Due to the high total amount or concentration of pollutants, it does not meet the discharge standard requirements or does not meet the environmental capacity requirements, thereby reducing the water environmental quality and functional goals. Places that must be artificially strengthened. Generally, it is divided into urban centralized sewage treatment plants and various pollution sources scattered sewage treatment plants, which are discharged into water bodies or urban pipelines after treatment. Sometimes in order to recover and recycle wastewater resources, it is necessary to build wastewater reuse or recycling wastewater treatment plants when it is necessary to improve the quality of the effluent after treatment.
In principle, as much water is used, as much sewage is produced, so the capacity of a sewage plant is generally equivalent to that of tap water. In the past, wastewater from paper mills was mostly discharged directly without treatment, which caused serious environmental pollution. With the improvement and development of environmental protection awareness and laws, it is imperative for paper mills to treat wastewater.
Process of self-provided sewage treatment plant:
(Sewage) → Removal of long fibers (floating matter) → Removal of sand → Removal of mud → Removal of organic pollutants → Disinfection → (Discharge)
Brief description of the process of self-provided sewage treatment plant:
The process of purifying sewage into standard reclaimed water is roughly the same as that of a water plant, except that there are more magazines and higher concentrations in the water. In addition to impurities such as sediment, suspended solids, and bacteria in the raw water, there are also organic pollutants (BOD). ).
What type of pump is used in the process of self-provided sewage treatment plant?
The pumps used exclusively by the sewage treatment plant in the process of treating sewage are different for different processes, and pumps with different parameters are used according to different usage conditions. In the sewage treatment process, from the inlet to the outlet, the equipment used during the period is generally a screw pump, a sewage sewage pump, a diaphragm pump, a submersible sewage pump, a corrosion-resistant centrifugal pump, etc.
Self-provided pump for sewage treatment plant
According to the characteristics of the above two pictures, Zoomlion Pump recommends the following pumps for self-provided sewage treatment plants:
The G-type sludge screw pump has the advantages of simple structure, safe and reliable operation, convenient use and maintenance, continuous and uniform discharge, and stable pressure. The sludge screw pump is a pump that sucks and discharges liquid through a rotating screw. It is most suitable for inhaling and expelling viscous liquids. G-type sludge screw pump is a single screw pump, and its advantages are the common advantages of screw pumps. It is not only suitable for conveying low-viscosity media, such as water, but also particularly suitable for conveying suspensions containing solid particles or short fibers, as well as high-viscosity media.
G-type sludge screw pump for sewage treatment plant
ZW self-priming non-clogging sewage pump, also known as solid-liquid pump or impurity pump. The hydraulic design of this series of pumps is unique. The impeller shrinks in a separate impeller chamber, and the pressure chamber is connected to the impeller chamber. When the impeller rotates, the liquid in the pump produces a strong axial vortex, which creates a vacuum at the inlet and a lift at the outlet. Therefore, the pressurized water chamber can discharge impurities and make its flow path completely unblocked, and the sewage effect is incomparable with other self-priming sewage pumps. The ZW self-priming pump of Zoomlion Pump can inhale and discharge large solids, long fibers, sediments, waste mineral impurities, fecal treatment and all engineering sewage, because the general self-priming clean water pump does not need to install a bottom valve. It is widely used in urban sewage engineering, light industry, papermaking, textile, food, chemical, electric power, petroleum, mining, pond aquaculture and other industries. industry. It is the most ideal pump for solid particles, fibers, mud and mixed suspension impurities in China.
WQ type stainless steel submersible sewage sewage pump is a new generation of pump products successfully developed on the basis of the introduction of foreign advanced technology and combined with the use characteristics of domestic water pumps. It has significant energy-saving effects, anti-winding, non-clogging, automatic installation and automatic control. Features. It has a unique effect in discharging solid particles and long-fiber waste. The unique single-blade or double-blade impeller structure greatly improves the ability of the sewage to pass through the submersible sewage pump. It can effectively pass 5 times the diameter of the sewage pump and solid particles with a diameter of about 50% of the sewage pump.
WQ stainless steel submersible sewage pump for sewage treatment plant
The DFP multi-stage corrosion-resistant centrifugal pump is made of stainless steel, which has strong corrosion resistance, practical safety, economy, trouble-free operation ability and low maintenance costs. It is used to transport corrosive liquids without solid particles and with a temperature of -20~105℃. The symmetrical arrangement and the elimination of the balance device can basically eliminate the axial force, and the residual axial force is borne by a pair of back-to-back angular contact ball bearings. Because there is no balance device, that is, the friction loss of the disk without the balance plate and no balance return loss, the pump efficiency is 3%-14% higher than the same type of multi-stage pump. Because there is no balance device, it can completely solve the pump caused by the failure of the balance device. Various failures such as the wear of the balance plate and the balance plate seat or the seizure of the rotor greatly extend the service life of the pump.
Self-balance DFP multi-stage corrosion-resistant centrifugal pump for sewage treatment plant
