The Activated Sludge Process (ASP) is a sewage treatment process in which air or oxygen is blown into raw, unsettled sewage to smash the solids and develop a biological 'soup' which digests the organic content and pollutants in the sewage.

2024年12月15日 · The existing site consists of an inlet works, four storm tanks, four primary settlement tanks, four ASP lanes, four final settlement tanks, and a sludge treatment facility, which digests indigenous and imported sludge from surrounding sites. Tightened permits. The table below shows the current and revised:

2011年1月1日 · The ASP, as shown in Fig. 1, is structured into two lanes, each separated into one mixed pocket and five surface-aerated pockets. Relevant technical specifications for this process are provided in Table 1 .

Civil engineering structures are used to distribute the flow and solid loads to multiple settling tanks or Activated Sludge Plant (ASP) lanes at a Sewage Treatment Works (STW). Achieving a good solids distribution requires adequate mixing to homogenise the solids, but this can be detrimental to achieving a good flow distribution, which normally ...

2013年2月1日 · The chosen ASP unit is one of three at the works designed to nitrify, and it consists of two identical aeration lanes, each preceded by a small anoxic zone. This is the most common configuration in Severn Trent Water's 57 activated sludge plants. The ASP is run on DO control set point of 1.5 mgO 2 /L, employing blowers in duty/assist/standby ...

The site, built circa 1974, is a five lane Activated Sludge Plant (ASP) operated in a conventional anoxic/aerobic configuration, with the anoxic fraction comprising 7% of the total volume. The works currently has a 20:30:5-10 (BOD/SS/AMM) consent.

MMI was appointed by a UK water company, which was constructing two new ASP lanes as part of an improvements scheme, to assess the anoxic zones using Computational Fluid Dynamics (CFD). Two anoxic zones, located upstream of the aeration lanes, were to be supplied with a mixture of settled sewage effluent from the primary tanks and Return ...

2024年12月14日 · The overall size of the ASP is 48m x 48m x 6.6m deep, has a capacity of 14,500m 3 and comprises four lanes. For the last few months, mechanical installation of the air blowers, air pipework manifolds, internal pipework, aeration grids, diffusers (by Suprafilt Ltd) and access platforms and walkways (by Tushingham Steel Fabricators) has been ...

constructing two new ASP lanes as part of an improvements scheme, to assess the anoxic zones using Computational Fluid Dynamics (CFD). Two anoxic zones, located upstream of the aeration lanes, were to be supplied with a mixture of settled sewage effluent from the primary tanks and Return Activated Sludge (RAS)

2021年10月1日 · Ammonia, Dissolved Oxygen (DO) and Total Suspended Solids (TSS) are the most commonly measure parameters in all ASP lanes. Ammonia is a key parameter in wastewater that has a reduction and compliance limit. Ammonia is removed during the ASP by autotrophic bacteria completing biological nitrification.