Industrial effluents
皮なめし工場
Tanneries belong to industrial sectors with the highest levels of water consumption. To make good quality leather from one ton of raw material, experience has shown that up to 60 m³ of water are required. The volume of waste water, which contains high levels of alkaline and organic substances, is, of course, correspondingly high. Direct discharge or treatment in municipal waste water clarification plants is therefore not possible. For corresponding waste water treatment in tanneries, GEA decanter centrifuges are used which optimally prepare a subsequent biological treatment.
High volume of waste water
In leather production water is not only needed for transportation in the production process but also for various tasks such as unhairing or soaking the hides. As a result of the specific production methods, the waste water not only has high alkaline levels (pH value 10), but is also contaminated with chemicals such as sulfite and chrome, and has a high level of organic substances. Biochemical processing of the waste water is a standard operation in many installations and GEA decanters lay a significant role.
Forwarding the waste water to municipal waste water treatment plants
After the waste water has been collected from the tanning process and polymer has been added, the decanters continuously separate all organic solids such as hair from the thickened sludge. The separated solids can be composted and find application, for example, in horticulture or forestry. The liquid phase is then subjected to biological treatment. The resultant sludge is recycled into the dewatering process; the waste water can be sent safely to conventional municipal waste water treatment plants. The advantages of decanters provide optimum dewatering capacity and use very little rinsing water. The closed system prevents aerosols from escaping; such aerosols would otherwise pose a hazard for humans and the environment.
製品および技術
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コントロールモジュール
T.VIS® コントロールモジュールは、シリーズ VARIVENT®、ECOVENT® & T-smart の GEA バルブを制御および監視するための最適なシステムです。
サニタリ仕様バルブ & コンポーネント
GEA のサニタリ仕様バルブは、マトリックスパイププロセスプラントの中核コンポーネントを構成します。柔軟性の基準を設定する先駆的なバルブの概念と、最新の制御および自動化機能により、当社のバルブでは製造業者の最大限の製品の安全性とプロセスの信頼性が得られます。全ての GEA サニタリ仕様バルブは、その用途に対して効率的で費用対効果が高くなるよう設計されており、持続可能な操業と大幅な節約につながります。
ジェットポンプ
エジェクタとも呼ばれるジェットポンプは、ガス・液体媒体が駆動力としての役割を果たすガス、蒸気、液体・固形物の搬送、圧縮または混合、および真空の生成のための装置です。
デカンタ遠心分離機
懸濁液の固体成分を高効率で処理するにあたり、デカンタの時代が到来しました。この機器は、高い浄化効率性と最大限の脱水だけでなく、固体の除去と同時に液体を分離できるようにします。ここでの主な要件は高いボウル速度、巻軸の強力な駆動装置および実現される固体脱水に自動的に順応する巻軸速度です。
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