sewage Articles
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Durban Ethekwini: Sanitation status
Sanitation provision in eThekwini (South Africa’s third-largest city) is reasonably good by comparison with most cities in sub-Saharan Africa, in line with South Africa’s relatively high per-capita GNP: most people have access to a hygienic toilet, and most sewage is treated before discharge to the environment in a controlled manner. However, a significant minority of the city’s ...
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Feasibility of bioflocculation in a high-loaded membrane bioreactor for improved energy recovery from sewage
The feasibility of a high-loaded membrane bioreactor to improve methane recovery from sewage was investigated. Although the process needs further optimization, it already is feasible to recover at least 35% of the sewage COD. Important aspects for further research are the occurrence of membrane fouling, and the optimum process conditions for bioflocculation, i.e. the proper SRT/HRT ratio, ...
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RTO on sewage sludge drying plant - Case Study
This RTO was installed to treat the exhaust from a large sewage sludge drier and to provide compliance with environmental legislation. ...
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`Sewage to selfie point` to save Ganga in state
Can the place where effluent are discharged in a river be so clean that one can stand up and take a selfie the re? This is the challenge that Namami Gange project has set for it self to clean the holy river, Chief minister Yogi Adityanath and Uniion minister for river development and Ganga rejuvenation Nitin Gadkari launched “Sewage Point to Selfie Point” campaign in the state on ...
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JOHANNESBURG-EKURHULENI: Sanitation Status
Sanitation provision in Johannesburg-Ekurhuleni (South Africa’s largest metropolis) is good by comparison with most cities in sub-Saharan Africa, in line with South Africa’s relatively high per-capita GNP: most people have access to a hygienic toilet, and most ...
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The variation of volatile fatty acid compositions in sewer length, and its effect on the process design of biological nutrient removal
The potential of enhanced biological phosphorus removal (EBPR) in biological nutrient removal (BNR) systems critically depends on the availability and types of volatile fatty acids (VFAs) in sewage. Although the characteristics of VFAs in sewage are strongly related with the biochemical transformations in the sewer system, they have not been studied thoroughly in terms of BNR process design. We ...
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Do Septic Systems Affect Water Quality?
Around 25% of homes in the United States are not connected to the community sewage systems and have a separate septic system installed. The Environmental Protection Agency has found that at least 48.5% of homes in the State of North Carolina also have a septic system installed. For more information check out this blog: http://www.lakenormanseptic.com/do-septic-systems-affect-water-quality/ ...
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Cape Town: Sanitation Status
Sanitation provision in Cape Town (South Africa’s second-largest city) is good by comparison with most cities in sub-Saharan Africa, in line with South Africa’s relatively high per-capita GNP: most people have access to a hygienic toilet, and most sewage is treated before discharge to the environment in a controlled ...
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Shifting baselines in the Tijuana tide
So last week I'm watching my oldest grom Israel (13) surf with Zach Plopper on the south side of the Imperial Beach pier. The surf is 2-4' with a south wind and sort of fun in a sloppy new south swell high tide sort of way. But then I smell it and see it--the infamous IB sewage plume. Not just a winter problem anymore--south wind and smell blows in sewage from the outfall pipe on the border and ...
By WiLDCOAST
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Investigation of a direct melting dehydrated sewage sludge pilot plant
A direct melting dehydrated sewage sludge furnace was tested to obtain the basic operating parameters. Observation of particles (fly ash and deposited particulates) inside the pilot plant was performed to determine the particle properties. The results showed that dehydrated sewage sludge could be directly melted at a temperature of 1400?C with stable combustion. With regard to the fly ash, the ...
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The behaviour of phosphorus and heavy metals in sewage sludge ashes
The effect of the combustion atmosphere and the additives (CaO and HCl) on the behaviour of phosphorus and heavy metals during sewage sludge combustion was investigated. The results demonstrated that the reduction combustion promoted the vapourisation of phosphorus and heavy metals during sewage sludge combustion. Moreover, the concentrations of phosphorus and heavy metals in the bottom ash ...
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Continuous Pyrolysis Facility for Sewage Sludge Treatment
The amount of sewage sludge is catastrophically increased in the latest few decades due to functioning of the municipal sewage treatment facilities. Dry sewage sludge contains 70-90% of the organic substances and 10-30% of the inorganic substances, which are dangerous for human health in case of inappropriate utilization. The continuous pyrolysis technology presents the unique sewage sludge ...
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Pump Stations Transfer of Ownership
The change in ownership of private sewage pumping stations is set to take place from now until October 2016. CountyClean Environmental Services advise on the changes currently underway. Some privately owned pumping stations will not be eligible for the transfer and you should check with your local water authority to find out if your pump station will be ...
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Project - 100 Anti-odour filters for waterworks company in Sierakowice
Project Description Customer Need: The client struggled with the excessive emission of odour and toxic substances from the newly created sanitary sewage network, including as part of the project "Organizing the water and sewage management of the SÅ‚upia and ÅÂupawa rivers in the Sierakowice Agglomeration" and "Construction of a sewage system with connections and sewage ...
By Ecol-Unicon
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Schladming (AUT) Municipal Plants - Case Study
Digester: 2 x 600 m³ sewage sludge digestion Scope of services: sewage sludge digester agitator, gas storage, gas equipment, heat exchanger Start-up: ...
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Six examples of wastewater reuse after reed bed treatment
The U.A.E. receives infrequent and irregular rainfall, totalling less than 130 mm per year. Temperatures range from 10°C to 48°C. Both industries and the population in the U.A.E. are growing very fast and public infrastructure is struggling to keep up with the exploding volume of sewage. The aim of these projects is to demonstrate applicable wastewater reuse options for individuals, ...
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Ammonia sanitisation of sewage sludge using urea
The aim of the study was to develop a simple, low-cost treatment for sewage sludge using urea as a sanitising agent. Sewage sludge was spiked with Enterococcus faecalis and Salmonella typhimurium, treated with 0.5, 1, 1.5 and 2% w/w urea at laboratory scale, and the viability was monitored during 4 months of storage at 4, 10 and 22 °C (only 0.5%). A linear relationship was ...
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Release of primary microplastics from consumer products to wastewater in The Netherlands
Here, we estimate the release of primary microplastics from consumer products – cosmetics and personal care products, cleaning agents, paint and coatings ‐ via sewage effluent, as an expected relevant route to the marine environment. Total estimated concentrations in three scenarios are 0.2, 2.7 and 66 µg/L in sewage treatment plant (STP) effluent respectively. all product categories ...
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Irrigation by Sewage Effluents in Yemen
Yemen is the least advanced country among Middle East Countries in the sewage reuse and safety control. The current sewage effluent quality in Yemen is generally poor as none of the existing sewage treatment plants produces effluents comply with the effluent quality regulations. The oxidation and stabilization ponds are considered the most appropriate for the warm climate conditions in the ...
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Warden Biomedia Chosen for New Severn Trent Wastewater Plant - Case Study
Severn Trent Water Limited (STWL) is a regulated business with responsibilities for the provision of water and sewage services to over 8 million people in an area stretching from the Severn Estuary to the mouth of the Humber. Severn Trent Water Limited constructed two aerobic treatment units (ATUs) at an existing Sewage Treatment Works. The ATUs were required as part of wider asset maintenance ...
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