Biological sewage reaction system and upgrading and expanding method
A sewage biological and reaction system technology, applied in the field of sewage treatment, can solve the problems of increasing the cost of sewage treatment, increasing the effective working time of microorganisms, and difficult to increase the amount of sewage treatment
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[0019] The present invention provides a sewage biological reaction system and a method for upgrading and expanding the CAST / CASS biological pond using the MBBR process and the newly-built secondary settling tank. In order to make the purpose, technical scheme and effect of the present invention clearer and more clear, the following is a description of the present invention Further details. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0020] The invention provides a sewage biological reaction system using MBBR technology and a newly built secondary settling tank to upgrade and expand the CAST / CASS biological tank, such as figure 2 As shown, it includes sewage biological reaction tanks. Generally, each two sets of CAST / CASS tanks in the prior art are replaced by AAO-MBBR mud membrane composite process treatment tanks (if there are four sets of CAST / CASS tank can be...
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