CALCIUM REMOVAL METHOD AND CALCIUM REMOVAL EQUIPMENT FOR CALCIUM-CONTAINING WASTE WATER

To provide a calcium removal method and a calcium removal facility for calcium-containing wastewater that can improve maintainability: in particular, when treating calcium-containing wastewater with a high calcium concentration, it is possible to facilitate the removal work of scales fixed to the me...

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Bibliographic Details
Main Authors MAKITA NORIO, NISHIMURA TAKASHI, SHIOZAWA YASUSHI, YASUNAGA TOSHIYUKI
Format Patent
LanguageEnglish
Japanese
Published 12.09.2019
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Summary:To provide a calcium removal method and a calcium removal facility for calcium-containing wastewater that can improve maintainability: in particular, when treating calcium-containing wastewater with a high calcium concentration, it is possible to facilitate the removal work of scales fixed to the members of a reaction tank of the calcium removal equipment, and by reducing the work frequency.SOLUTION: The method for removing calcium from calcium-containing wastewater according to the present invention introduces calcium-containing wastewater as treated water through at least one of a pipe or a predetermined tank 11, and the introduced calcium-containing wastewater is introduced into a reaction tank 12 in which the calcium-containing wastewater is reacted with carbonate to produce calcium carbonate, and a scale softening agent is added to at least one of the reaction tank 12, the predetermined tank 11, and the pipe, thereby softening the scale and facilitating its removal operation.SELECTED DRAWING: Figure 1 【課題】特に、カルシウム濃度が高いカルシウム含有排水を処理する場合において、カルシウム除去設備の反応槽の部材に固着したスケールの除去作業を容易することができるとともに、作業頻度を減少させることにより、カルシウム除去設備のメンテナンス性を向上させることができる、カルシウム含有排水のカルシウム除去方法及びカルシウム除去設備を提供すること。【解決手段】本発明のカルシウム含有排水のカルシウム除去方法は、被処理水としてのカルシウム含有排水を、配管又は所定の槽11の少なくともいずれかを介して導入し、前記導入されたカルシウム含有排水を、炭酸塩と反応させて炭酸カルシウムを生成させる反応槽12へ導入し、前記反応槽12、前記所定の槽11、及び前記配管の少なくともいずれかにスケール軟質化剤を添加する。これにより、スケールを軟質化してその除去作業を容易化する。【選択図】図1
Bibliography:Application Number: JP20180036287