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About product and suppliers:
        Alibaba.com offers 37,422 sewage treatment products. About 59% of these are water treatment, 3% are filter press equipment, and 2% are water treatment chemicals. 

A wide variety of sewage treatment options are available to you, such as free samples, paid samples. 

There are 36,905 sewage treatment suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Taiwan, which supply 97%, 1%, and 1% of sewage treatment respectively. 

Sewage treatment products are most popular in Domestic Market, Southeast Asia, and Mid East. 

You can ensure product safety by selecting from certified suppliers, including 16,448 with ISO9001, 6,485 with Other, and 3,074 with ISO14001 certification.