Multi-carrier biofilm and membrane drinking water treatment equipment for polluting river network source water

Abstract

The invention discloses a polluted-river-network-source-water multi-carrier biomembrane and a membrane drinking water treatment facility. The facility comprises a primary bioreactor, a secondary bioreactor, a tertiary bioreactor and a produced water tank, wherein raw water to be treated communicates with the primary bioreactor through a raw water pump; the primary bioreactor, secondary bioreactor and tertiary bioreactor are sequentially connected through a pipeline; the insides of the primary bioreactor, secondary bioreactor and tertiary bioreactor are respectively divided into a filler space and a sludge hopper; an ultrafiltration membrane is arranged in a filler layer inside the tertiary bioreactor; the upper end of the ultrafiltration membrane is connected with the produced water tank through a pipeline and a produced water pump; the bottom of the produced water tank is connected with the ultrafiltration membrane through a back flush water pump; and the tertiary bioreactor positioned below a reticular support plate is connected with an air compressor through a pipeline. By organically combining the biomembrane treatment technique with the ultrafiltration membrane technique, the facility does not to add any coagulant or need any advanced treatment facility.

Description

technical field [0001] The invention relates to a multi-carrier biofilm and membrane drinking water treatment equipment for polluting river network source water. The equipment is different from the traditional water treatment technology, and does not need to add chemicals, nor does it need advanced treatment processes such as ozone; it belongs to the water treatment technology field. Background technique [0002] The water quality of the river network in the Hangjiahu Plain is seriously polluted. Because the inland river network is interconnected, its water quality is not only affected by upstream water pollution, but also harmed by local pollution sources. The river water in this area is mainly polluted by high ammonia nitrogen and high organic matter (permanganate index) as the source of drinking water for surface water. Sometimes, seasonal manganese exceeds the standard, and the chroma and turbidity are high, which is a difficult problem for drinking water treatment. [...

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Problems solved by technology

[0003] At present, in the Hangjiahu area, the urban water supply and purification plants for the river network water polluted by high ammonia nitrogen and high organic matter generally adopt the traditional treatment process of adding coagulant, and also need to adopt biological treatment process, supplemented by ozone activated carbon and other treatments. However, the treatment effect of ammonia nitrogen and other indicators in the winter low temperature period is still difficult to meet the treatment requirements. In summer, due to the excessive reproduction of microorganisms, the suspended filler is blocked, which affects the treatment effect.

[0004] In recent years, there have also been researches on the use of biological treatment technology, conventional treatment technology, advanced treatment technology combined with ultrafiltration technology to treat polluted river network source water, but the effect of the ultrafiltration technology is only equivalent to improving the filtration effect of the sand filter, and has not It can effectively and fully play the role of ultrafiltration membrane, and there is no organic synergy between ultrafiltration technology and other water treatment technologies

In addition, some researchers have applied the biological technology and ultrafiltration technology of sewage treatment to the treatment of drinking water sources with high ammonia nitrogen and high organic matter. However, due to the different characteristics of drinking water sources and sewage water quality, it is difficult to achieve the purpose of treatment.

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