Abstract
Use of incinerated sewage sludge ash in cement mortars: case study in Croatia
Highlights
The by-product of any technology applied in treatment of municipal wastewater is the sludge separated from primary and secondary sedimentation tanks, etc
This paper presents experimental research carried out with the aim of investigating the effect of incorporating of incinerated sewage sludge ash (ISSA) obtained from waste water treatment plant (WWTP) Zagreb on the properties of cement mortar in fresh and solid condition, Fresh stabilized and dehydrated sludge was collected at WWTP Zagreb, and transported to the laboratory where it was subjected to drying at the temperature of 105 °C, for 24 hours
The use of ISSA in production of cement mortar, with ISSA substituting a part of cement, resulted in satisfactory physical and mechanical properties of mortar
Summary
The by-product of any technology applied in treatment of municipal wastewater is the sludge separated from primary and secondary sedimentation tanks, etc. At present sewage sludge from wastewater treatment is disposed on waste disposal landfills or at the point of origin, i.e. waste water treatment plant (WWTP) location, or in some other undefined way. This approach to the problem is not in accordance with the existing legislation, and it is detrimental to the environment. Use of incinerated sewage sludge ash in cement mortars: case study in Croatia final stage, in quantities that are not negligible. Depending on the sludge characteristics that differ from one WWTP to another, further investigations are recommended for the purpose of determining of optimum temperature of sludge incineration
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