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Sludge Sampling Articles & Analysis
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The following is a systematic analysis from the core dimensions: I. Sample Characteristics matrix complexity Organic matter content: Biological samples (plants, blood) require digestion with strong oxidizing acids (such as the HNO3-H2O2 system). ...
In late 2013 newterra was contracted to design, build and rapidly deploy a modular and pre-manufactured 10 liter per second metals precipitation and solids removal system for a copper mine in Chile. Market Served Application Location Challenge Solution ...
Contamination was mainly in the sludge separated from the groundwater by the clay layer. The remediated zone was at depths of 0-2,5 meters. ...
This February, we began our first 2L digester study to assess new variations of our anaerobic food supplement. While this is obviously not exactly the same as starting up a full-scale digester, the combination of minor operational issues, unusual pH behaviors, and unexpected sludge volcanos were a bit of an eye-opener to the digester startup experience. In this blog, my intent is to share some ...
The Challenge Anguil Environmental Systems was asked to supply an oxidizer and packed tower air stripper to treat a 65 gallon per minute water stream containing significant concentrations of Diesel Range Organics (DRO), Volatile Organic Compounds (VOCs) and Total Suspended Solids (TSS). The customer was sending the wastewater stream through a cooling tower which was continually fouling from the ...
Tests carried out Sludge in recirculation on the oxidation tank, after dynamic thickener and in recirculation on the mesophilic and thermophilic digester. Goal Maximize the yield of the oxidation and digestion processes, increase dehydration and reduce the volume of sludge to be disposed of. Results COD 30 times greater on the cavitated sample ...
Likewise, it may be about low BOD/DQO ratio, either because the BOD is really low or also due to a toxic effect that the sample has been generating during the BOD test performance. In fact, this same toxic effect can be translated to the bCOD/DQO (Biodegradable COD / COD) where, by varying the ratio [sample volume/ sludge volume] in the ...
In reality the settling velocity is never constant as other particles, water turbulences and sludge accumulation hinder the settling process. Additionally particles differ a lot in size and densities which results in different settling velocities. ...
Now, a team of New Jersey Institute of Technology (NJIT) researchers has isolated a bacterium from an activated sludge sample that can break down coexistent dioxane and 1,1 DCE, potentially opening the door to bioremediation for the 80% of dioxane sites that are co-contaminated. ...
The samples included untreated municipal sludge from the biological wastewater treatment, digested sludge and sludge before and after composting. First, samples were taken as grab samples to study the bioavailable part in aqueous phase but also the part in solid fraction. ...
Depending on the prevalence of helminth infections in communities, up to 1.0 × 103 ova/larvae can be presented per litre of wastewater and 4 gm (dry weight) of sludge. Multi-barrier approaches including pathogen reduction, risk assessment, and exposure reduction have been suggested by health regulators to minimise the potential health risk. ...
The technical feasibility of an ammonium recovery process (‘ion-exchanger–loop-stripping’) for sludge liquor from municipal wastewater treatment plants is examined. ...
This causes the formation of a surface sludge layer. This layer plays positive roles in the treatment performance, but also leads to clogging. The objective of this study was to contribute to the description of the sludge deposits characteristics and their dynamics of evolution, which may control the development of clogging. Representative ...
Sludge treatment reed bed (STRB) systems combine dewatering, stabilisation and long-term storage of sludge. ...
To achieve this goal, final effluents produced in two processes for treating wastewater; namely, a trickling filter system and an activated sludge system, were collected and their UV disinfection were compared. ...
The results showed that pre-treatment of anaerobically digested sludge with 5 g/L of potassium ferrate(VI) reduced the concentration of fecal coliforms in the sludge cake to below 100 MPN/g DS. The second phase evaluated the ability of ferrate(VI) to oxidise selected hormones in sludge. Anaerobically digested sludge ...
Ammoniacal components can also be found in soil, sludge and bio waste. In those sample matrices, a mixture of several nitrogen containing compounds as urea, nitrogen from other organic origin such as amino acids, proteins, nitrate, nitrite and ammonium can be found. Using the Kjeldahl equipment, selective nitrogen determination of the Total Kjeldahl Nitrogen ...
ByBUCHI
The STP in Shihezi was chosen as representative to investigate the distribution of antibiotics in a sludge-sewage system. Results showed that the concentrations of most detected antibiotics ranged from tens to hundreds of nanograms per liter in influent samples and under 100 ng L−1 in effluent samples. QNs and TCs were dominant species with ...
A parameter estimation framework was used to evaluate the ability of observed data from a full-scale nitrification–denitrification bioreactor to reduce the uncertainty associated with the bio-kinetic and stoichiometric parameters of an activated sludge model (ASM). Samples collected over a period of 150 days from the effluent as well as from the reactor tanks ...
The aim of the study was to investigate the prevalence and diversity of helminth eggs in pit latrine sludge in Yaounde, Cameroon. A total of 30 faecal sludge samples were collected in various latrines and analysed for physico-chemical parameters and helminth eggs' characterization was undertaken using standard protocols. ...