wastewater treatment plants Articles

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Wastewater Level Measurement Techniques

by Greyline Instruments Inc.  (Sep. 2, 2014)

Level monitoring and control is a fundamental requirement in any wastewater treatment process. You will find level instrumentation installed at even the simplest treatment plants for pump control, chemical storage tanks and process level controls or alarms. Operators have only limited or emergency control over treatment plant influent, so level ...

Dissolved and colloidal organic nitrogen removal from wastewater treatment plants effluents and reject waters using physical–chemical processes

by IWA Publishing  (Aug. 7, 2014)

Four physical–chemical processes were compared in terms of the efficiencies of dissolved and colloidal organic nitrogen (DON and CON) removal from the secondary effluents (SE) and reject water from full-scale biological nutrient removal activated sludge systems. Adsorption on activated carbon was most efficient and allowed removal from the ...

Major waste management company and cbio combine resources, to resolve a breach of ammonia consent, in a large wastewater treatment plant case study

by Cleveland Biotech Ltd  (May 29, 2014)

The WWTP itself is located in the East Midlands, and treats dairy waste from a large processing plant, treating c1,500m3 of effluent per day. On 30th July the ammonia (NH3) levels in the permeate from the MBR at the plant began to increase. The effluent plant discharges to a river and as such, the consent limit is stipulated by the Environment ...

Development of a natural treatment system consisting of red ball earth and alfalfa for the post-treatment of anaerobically digested livestock wastewater

by IWA Publishing  (Sep. 17, 2014)

With the objective of developing a post-treatment process for anaerobically digested livestock wastewater, an innovative natural treatment system composed of two units is proposed. The first trickling filter unit further reduced biochemical oxygen demand and achieved a certain degree of nitrification. The second soil-plant unit was targeted at ...

Swedish Biogas Plant Case Study

by Biodome International Ltd  (Jun. 5, 2014)

BIODOME® INTERNATIONAL has success-fully installed a BIODOME® Double Mem-brane Roof onto a GFS Tank for a Swedish Biogas Plant. The waste-to-energy facility was a partner-ship between renewable energy specialist Swedish Biogas International and the City of Flint. The additional digester was added to the existing waste water treatment ...

Multispecies acute toxicity evaluation of wastewaters from different treatment stages in a coking wastewater‐treatment plant

by John Wiley & Sons, Ltd.  (Jul. 9, 2014)

Coking wastewater contributes approximately 5% of the total discharge volume of industrial wastewaters every year in China. The toxicity of coking wastewater to aquatic organisms is still unknown. The authors evaluated the toxicity of wastewater from different treatment stages in a coking wastewater treatment plant, South China, using 5 test ...

Synthetic organic polymer fouling in municipal wastewater reuse reverse osmosis

by IWA Publishing  (Sep. 5, 2014)

A full scale waste water reuse plant suffered from irreversible fouling of the reverse osmosis (RO) membranes. The major suspect of fouling is cationic organic polymers applied in the wastewater sludge treatment. Thus, the purpose of this research is to study the effect of six cationic polymers, applied in the plant, on RO membrane performance. ...

Wastewater Treatment Plant Monitors Greenhouse Gas Emissions

by Gasmet Technologies Oy  (Apr. 16, 2014)

Globally, little attention is paid to gaseous emissions from wastewater treatment processes. This contrasts greatly with the regulatory monitoring that is applied to the quality of water emissions from such facilities. However, in Helsinki, Finland, a large municipal wastewater treatment facility continuously monitors its emissions of greenhouse ...

Organic matter removal during pilot-scale soil aquifer treatment for domestic wastewater in the tropics

by IWA Publishing  (Aug. 7, 2014)

The potential of enhancing water uses using soil aquifer treatment (SAT) is an interesting alternative for tropical regions, limited only by lack of knowledge on its performance in local conditions and the feasibility of adapting this technology. A SAT pilot study was conducted to analyze the phenomena associated with the transformation of ...

Thermal hydrolysis of waste activated sludge at Hengelo Wastewater Treatment Plant, The Netherlands

by IWA Publishing  (Jul. 16, 2014)

The thermal hydrolysis process (THP) is a sludge treatment technique which affects anaerobic biodegradability, viscosity and dewaterability of waste activated sludge (WAS). In 2011 a THP-pilot plant was operated, connected to laboratory-scale digesters, at the water board Regge en Dinkel and in cooperation with Cambi A.S. and MWH Global. Thermal ...

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