sludge reduction Applications

The wide range of Pieralisi decanters is in fact successfully used by over 15,000 customers around the world for the volume reduction of biological and physical/chemical sludge of both Municipal and Industrial origin.

By Pieralisi Group based in Jesi, ITALY.

The wide range of Pieralisi decanters is in fact successfully used by over 15,000 customers around the world for the volume reduction of biological and physical/chemical sludge of both Municipal and Industrial origin.

By Pieralisi Group based in Jesi, ITALY.

Both economic and ecological demands make maximum dewatering of sludge a most crucial step in the process flow, especially for the pulp and paper industry with their large quantities of sludge to handle. A highest possible dry content of dewatered sludge minimizes weight and volume, hence achieving the following objectives: reduction of transport and disposal cost. high heating value for incineration without additional fuel. With the sludge dewatering systems including both AKSE S disc thickener and AKUPRESS BX screw press BELLMER KUFFERATH Machinery offers plant and equipment able to dewater structured sludges to maximum dry contents.

By BELLMER KUFFERATH Machinery GmbH based in Düren, GERMANY.

In industrial manufacturing companies, before a new process comes on-line, it is important to measure the toxicity of the effluent stream. This is especially the case for companies who treat their own waste. From the toxicity value (EC50) obtained, it may be a cost-effective solution to simply discharge the effluent to the treatment works at a slow and defined rate to minimise damage to the activated sludge. Following a period of acclimatisation it is often possible to increase feed rates to the plant and this can again be managed using the Strathtox Respirometer. An alternative approach is to undertake toxicity reduction procedures, such as neutralisation or acid hydrolysis, in pilot-scale laboratory studies. The Respiration or the Nitrification Inhibition Test may be used for this. In the future, toxicity reduction may be stipulated by local authority, water company or publicly-owned treatment works prior to giving discharge consents. Toxicity reduction may be evaluated using toxicity tests on activated sludge provided by the treatment works.

By Strathkelvin Instruments Ltd. based in North Lanarkshire, UNITED KINGDOM.

TenCate Geotube technology dewaters primary, secondary and overflow sludge from the sewage treatment plants’ digesters and lagoons. This municipal dewatering solution is used in water and wastewater treatment applications including lagoons, tanks, and digester cleanouts.  The containers can provide dewatering and containment in one operation, with 85% to 90% reduction of BOD in the effluent. Most of the time, the dewatered effluent is clear and safe enough to be returned to the sewage treatment plants.

By TenCate Geosynthetics Netherlands bv based in AE in Nijverdal, NETHERLANDS.

WEAVEinMotion process belts are effective and robust cores for belt presses which are particularly efficiently acting systems for dewatering sludges and fruit mashes. A decrease in transport, disposal and recycling costs is obtained thanks to the reduction in volume achieved.

By GKD - Gebr. Kufferath AG based in Düren, GERMANY.