Paper and pulp industry wastewater

...(1) Organic wastewater with relatively high concentrations These are seen in wastewater from the food manufacturing, chemical, and paper and pulp industries. Food manufacturing wastewater not only has high BOD and COD, but also high concentrations of nitrogen and phosphorus, and sometimes has a high oil content. Paper and pulp industry wastewater also has a high BOD, a strong odor, and is very difficult to treat, and wastewater from the bleaching process is harmful to fish and shellfish. (2) Organic wastewater with relatively low concentrations These include wastewater from the textile industry and some of the industries listed in (1). In the case of the textile industry, wastewater from the dyeing process is difficult to treat and can be harmful to aquatic life, but other than that there are few problems. ...

*Some of the terminology used in reference to "paper and pulp industry wastewater" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…(1)有機性で比較的濃度の高い排水　食料品製造業，化学工業，紙･パルプ工業からの排水にみられ，食料品製造業排水ではBODやCODが高いのみならず，窒素やリンの濃度も高く，ときとして油分濃度が高いこともある。また紙･パルプ工業排水はBODが高く，臭気，着色も強く処理はかなりむずかしく，漂白工程の排水などは魚介類に有害である。(2)有機性で比較的濃度の低い排水　繊維工業からの排水，(1)にあげた産業の一部からの排水などで，繊維工業の場合，染色工程の排水処理はむずかしく，水生生物に有害なこともあるが，それ以外は問題が少ない。…

※「紙・パルプ工業排水」について言及している用語解説の一部を掲載しています。

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