Integrated automatic backwash water purifier

General    Narration

The integrated automatic backwash water purifier is a new generation of water purification equipment independently developed by our company by digesting and absorbing domestic and foreign technologies. It has the characteristics of fast construction period, low comprehensive investment, compact layout, flexibility, small floor area, excellent effluent quality, simple operation and maintenance, etc. it is an ideal equipment for water purification of urban water supply and industrial and mining enterprises. After treatment, the water quality meets the national "sanitary standard for drinking water". The introduction of the equipment provides a more convenient way for the treatment of small and medium-sized tap water purification stations such as urban water supply, industrial and mining enterprises. The product was recommended by the Ministry of construction in 1999. Since the product came out, it has provided this convenient device for many users, And get good reputation.

The main equipment of the integrated automatic backwash water purifier is a steel structure, which is made into finished products in our factory. When it arrives at the site, it can be put into use after assembly, and the construction period is fast.

The design of the integrated automatic backwash water purifier also fully considers the regional water quality differences. While reasonably selecting the dosing point, the coagulation reaction function is added to make the device have sufficient coagulation reaction time. The surface load is designed conservatively to make the equipment more resistant to impact load and more suitable for different water quality occasions in different regions. The filtration system adopts low resistance water distribution for deep slow filtration to ensure that the turbidity of filtered effluent is less than or equal to 5 degrees.

The integrated automatic backwash water purifier highlights the features of convenience, practicality and simple operation in design. The whole system skillfully uses hydraulic characteristics to realize automatic operation. The requirements for the quality of operators are not high. The average person can operate freely, and can automatically control the end point of equipment operation. When the surface of the filter is blocked to a certain extent, it will recoil automatically. The whole set of device has no moving parts, and the equipment fault is almost zero. The operation is reliable and easy to maintain.

The integrated automatic backwash water purifier is composed of two parts: quick inclined tube precipitator and gravity filter. Its working principle and technical characteristics are as follows:

one   Fast inclined tube precipitator

The rapid inclined tube precipitator is improved on the basis of the traditional horizontal flow precipitator. The inclined tube is set in the precipitator to increase the sedimentation area, so the efficiency of the inclined tube precipitator is greatly improved. In other words, on the premise of treating the same amount of water, the volume of equipment (or device) can be reduced, and the equipment investment can be reduced. While increasing the inclined pipe to reduce the volume of the equipment, the hydraulic conditions are also greatly improved in technology: when the diameter and spacing of the inclined pipe are small enough (generally about 30mm), the water flow is in a laminar flow state, at this time, the settlement of particles is not disturbed by the water flow, and the stability of precipitation is improved. Therefore, the settling time is shortened. The precipitator is also equipped with a coagulation reaction area. After the raw water enters, the suspended impurities are flocculated into larger particles through coagulation reaction, and then enter the sedimentation area to ensure the sedimentation effect. Because of the reaction area, the precipitator of the equipment has longer coagulation time and better sedimentation effect than the traditional integrated water purifier. Generally, when the turbidity of the influent is less than 1000ppm, the sedimentation effect is better, The effluent turbidity of precipitator is less than 15ppm.

2. Gravity filter

The device is designed for hydraulic automatic recoil, and its working principle is as follows:

The process of filtration is as follows: the clear water after sedimentation or clarification enters the siphon rising pipe through the water distribution tank and U-shaped pipe, and then evenly distributes the water in the filter material layer through the water distribution baffle in the top cover. The water is filtered through the filter material layer from top to bottom. The filtered water enters the catchment area from the water distribution system with small resistance, that is, the outlet tank for storage. When the water level rises to the outlet pipe, the filtered water flows into the clean water tank.

When the filter is just put into operation, the filter material layer is relatively clean, but after a certain period of operation, due to the gradual increase of solid particles and impurities in the filter material layer, the head loss also increases, and the water level rises slowly along the siphon riser. When the head loss increases to a certain extent, the water level in the siphon riser rises to the auxiliary siphon nozzle, The water will flow down rapidly from the auxiliary pipe orifice, and the air in the siphon will be taken away continuously by the entrainment and ejection of the water flow and the suction pipe, so that the siphon will form a vacuum. A large amount of water in the siphon riser will cross the pipe top and fall down along the siphon downcomer. At this time, the backwashing process begins. The water in the flushing water tank flushes the filter layer from bottom to top through the barrel connecting pipe, the catchment area and the water distribution system, and the flushing waste water flows into the drainage well through the siphon pipe for discharge. In the process of flushing, the water level of the water tank gradually drops, about 5 minutes of flushing. When the water level of the water tank drops to the siphon breaker, the siphon is destroyed, the flushing process is over, and the filtration starts again.

With this device, the traditional mechanical backwash pump can be omitted, and the clean water from the clean water pool does not need to be extracted as backwash water, so that the whole system becomes simpler due to the reduction of backwash pump and related pipes, valves and pipe fittings, greatly reducing the operation and management intensity and equipment investment. Because the backwash is automatically carried out according to the blockage degree of the filter layer, the manual operation error is reduced, and the whole set of device can even operate in the state of unmanned operation.

It can be seen that the combined automatic integrated water purification device as the purification facilities of small and medium-sized waterworks has many incomparable advantages. Its application will make the whole processing system more simple, convenient and reliable. It has more advantages than the old water purifier both in technology and economy. At present, this kind of product has been applied to small water plants by more and more users, and has become the replacement product of traditional water purifier.

This equipment can be delivered separately or in a complete set. The complete set includes: dosing device, tubular mixer, water pump, quartz sand and auxiliary equipment such as pipes and valves connecting all the equipment. Please specify when ordering.

The technical parameters and dimensions listed in this manual are for design and selection reference. With the continuous progress of technology, the technical parameters and dimensions will be improved continuously. Please contact our company in time when ordering.

Our company is a professional manufacturer of water treatment, environmental protection equipment and chemical machinery. In addition to this equipment, we also provide you with other water purification equipment; Ion exchange softening and desalting equipment; Sewage treatment equipment; Boiler auxiliary equipment; Frequency conversion water supply equipment; Cooling tower; Swimming pool circulating water treatment equipment and other water supply and drainage equipment; Non standard equipment processing; To undertake the design and construction of water supply and drainage engineering and environmental protection engineering, you are welcome to inquire and patronize.