Статьи

Перевод на замкнутый цикл системы водоснабжения очистных сооружений комбината с использованием нормативно-очищенных стоков вместо технической воды

15 Окт 2011

Область применения: Предприятия со значительным расходом воды.

Описание:
До внедрения способа водоснабжение комбината состояло из двух автономных систем: технической и хозяйственно-питьевой.
Система хозяйственно-питьевого водоснабжения имела забор воды из артскважины. Забор технической воды производился из открытого источника. Так как забор воды производился из открытого поверхностного источника, в воде содержалось значительное количество микроорганизмов и ила, что приводило к заносу поверхностей теплообменников у воздуходувок, ухудшению теплопередачи, неоправданному перерасходу охлаждающей воды, частым остановкам воздуходувок и к нарушению условий эксплуатации.
Описание способа. Предложено перевести на замкнутый цикл систему водоснабжения комбината с использованием очищенных стоков после биологической очистки. Для реализации указанного предложения на станции перекачки очищенных стоков установлены два насоса 4к - 12 производительностью 90 куб.м/ч воды с электродвигателями по 14 кВт. Схема подключения насосов выполнена по независимой схеме работы с автоматическим вводом резерва. В качестве датчика, сигнализирующего снижение давления на напорной линии, установлен электроконтактный манометр.
Каждый насос на всосе оборудован фильтром тонкой очистки. Напорный трубопровод от насосов врезан в существующий технический водопровод после задвижки на вводе. Производительность насоса составляет 2000 куб.м/ч воды.
Включение и выключение насосов производится по предельным датчиками верхнего и нижнего уровней, установленным в очистных сооружениях.

Подрисуночная надпись: Схема повторного использования очищенных стоков: 1 - насосы для перекачки очищенных стоков; 2 - вновь установленные насосы повторного использования очищенных стоков; 3,4 - воздуходувки; 5-7 - регуляторы подачи охлаждающей воды по температуре масла и воздуха; 8 - маслоохладители; 9 - охладитель воздуха; 10 - емкость масла; 1 - станция перекачки очищенных стоков; П - вновь установленный блок насосов повторного использования очищенных стоков; Ш - воздуходувная; 1У - реконструируемый узел регулировки воды.

Эффективность: Так как в очищенных стоках содержится меньше микроорганизмов и ила, стало возможным автоматически регулировать расходы воды, идущей на охлаждение воздуходувных машин. В качестве датчиков установлены термометры сопротивления и регулирующие клапаны с электроприводом.Автоматическое регулирование охлаждающей воды позволяет сократить ее расход на 30 куб.м/ч.Годовая экономия составляет 609 тыс.кВт ч электрической энергии.




Начало активности (дата): 15.10.2011 17:45:34

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