Combination of a partial nitritation process and an anaerobic ammonium oxidation process for the treatment of sludge reject water has some general cost-efficient advantages compared to nitrification-denitrification. The integrated process features two-stage autotrophic conversion of ammonium via nitrite to dinitrogen gas with lower demand for oxygen and no external carbon requirement. A nitrify...

This study was conducted to investigate the impact of industrial activities on heavy metals status in wastewater, sludge and flora bank selected main drains Hayatabad Industrial estate, Peshawar. Plants, wastewater samples sites were collected analyzed for distribution; cadmium (Cd), chromium (Cr), lead (Pb) zinc (Zn) levels. Bioconcentration factor (BCF) values calculated plants (Phalaris mino...

According to previous research, it has been proved that wastewater treatment plants (WWTPs) can retain more than 90 % of the MPs contained in wastewater. However, a significant fraction removed WWTPs is retained sludge floc and this may lead an environmental issue since biosolids be used as fertilizers. The purpose research was evaluate how presence polyethylene (PE) could interfere with activa...

Abstract Accumulation of water treatment sludge is a major environment problem in the purification process. Recovery waste constituents or reuse cost-effective method handling this environmental dilemma. The present study investigates suitability production bricks and recovery aluminum from accumulated at Biyagama drinking plant (BDWTP) Sri Lanka. chemical parameters total organic carbon, pH, n...

background and purpose: disposing sludge from industrial wastewater treatment plants (iwwtps) is a serious issue because it can affect human and animals health, and also environmental quality. in this study, sludge from an iwwtp was analyzed regarding its physicochemical characteristics and disposal options. materials and methods: grab sampling was used to collect 12 sludge samples biweekly (ma...

Microplastics were investigated in an agricultural soil to which three types of sludge repeatedly applied: fresh municipal (FSS1), mixed (mainly industrial sludge) (FSS2), and dry heat-treated (DSS). The percentages microplastics <1.0 mm 24.3 28.7–59.1 % unamended amended soils, respectively. Particles this size accounted for 47.1–60.0 different sludges polymers particle <100 μm occurred all sa...

Activated sludges are an inoculum source commonly used in biodegradation studies, as wastewater treatment facilities constitute an entry point to the environment for many chemicals. In this paper, the main issues relating to the use of activated sludge in biodegradability tests are presented. Special attention is also devoted to discussing the factors affecting both the activity of the microbia...

Control methods are needed to abate NH losses from swine anaerobic lagoons to reduce the contribution of confined swine operations to air pollution. In a 15-mo meso-scale column study, we evaluated the effect of manure pretreatment on water quality, reduction of N losses, and sludge accumulation in swine lagoons using (i) enhanced solid-liquid separation with polymer (SS) and (ii) solid-liquid ...

The present disposal routes of sewage sludge represent a critical environmental issue in Egypt. Recently, there has been an increasing concern about sewage sludge management due to the environmental risks, which resulted from the fast expansion of wastewater treatment plants without equal attention in dealing with the produced sludge. This paper discusses the current situation of sewage sludge ...