Chemically enhanced primary treatment of dairy wastewater using chitosan obtained from shrimp wastes: optimization using a Doehlert matrix design

2020 ◽  
pp. 1-18
Author(s):  
Gustavo Lopes Muniz ◽  
Alisson Carraro Borges ◽  
Teresa Cristina Fonseca da Silva ◽  
Rafael Oliveira Batista ◽  
Simone Ramos de Castro
Keyword(s):  
Primary Treatment ◽  
Dairy Wastewater ◽  
Doehlert Matrix ◽  
Chemically Enhanced Primary Treatment ◽  
Shrimp Wastes ◽  
Matrix Design

Chemically enhanced primary treatment using recovered iron

2018 ◽  
Vol 2018 (18) ◽  
pp. 155-163
Author(s):  
Tulip Chakraborty ◽  
Scott Smith ◽  
Domenico Santoro ◽  
John Walton ◽  
Madhumita B Ray ◽  
...  
Keyword(s):  
Primary Treatment ◽  
Chemically Enhanced Primary Treatment

scholarly journals Rotating belt sieves for primary treatment, chemically enhanced primary treatment and secondary solids separation

2017 ◽  
Vol 75 (11) ◽  
pp. 2598-2606 ◽  
Author(s):  
B. Rusten ◽  
S. S. Rathnaweera ◽  
E. Rismyhr ◽  
A. K. Sahu ◽  
J. Ntiako
Keyword(s):  
Removal Efficiency ◽  
Oxygen Demand ◽  
Pilot Scale ◽  
Primary Treatment ◽  
Biofilm Reactors ◽  
Fine Mesh ◽  
Coagulation And Flocculation ◽  
Successful Removal ◽  
Solids Separation ◽  
Chemically Enhanced Primary Treatment

Fine mesh rotating belt sieves (RBS) offer a very compact solution for removal of particles from wastewater. This paper shows examples from pilot-scale testing of primary treatment, chemically enhanced primary treatment (CEPT) and secondary solids separation of biofilm solids from moving bed biofilm reactors (MBBRs). Primary treatment using a 350 microns belt showed more than 40% removal of total suspended solids (TSS) and 30% removal of chemical oxygen demand (COD) at sieve rates as high as 160 m³/m²-h. Maximum sieve rate tested was 288 m³/m²-h and maximum particle load was 80 kg TSS/m²-h. When the filter mat on the belt increased from 10 to 55 g TSS/m², the removal efficiency for TSS increased from about 35 to 60%. CEPT is a simple and effective way of increasing the removal efficiency of RBS. Adding about 1 mg/L of cationic polymer and about 2 min of flocculation time, the removal of TSS typically increased from 40–50% without polymer to 60–70% with polymer. Using coagulation and flocculation ahead of the RBS, separation of biofilm solids was successful. Removal efficiencies of 90% TSS, 83% total P and 84% total COD were achieved with a 90 microns belt at a sieve rate of 41 m³/m²-h.

Chemically enhanced primary treatment of textile effluent using alum sludge and chitosan

2015 ◽  
Vol 57 (16) ◽  
pp. 7280-7286 ◽  
Author(s):  
Muhammad Bilal Asif ◽  
Nadeem Majeed ◽  
Sidra Iftekhar ◽  
Rasikh Habib ◽  
Sadia Fida ◽  
...  
Keyword(s):  
Primary Treatment ◽  
Textile Effluent ◽  
Alum Sludge ◽  
Chemically Enhanced Primary Treatment

Study on Chemical Enhanced Primary Treatment of Sewage

2013 ◽  
Vol 464 ◽  
pp. 189-193
Author(s):  
Jun Hong Luo ◽  
Chong Hao Huang ◽  
Yong Zhang
Keyword(s):  
Organic Matter ◽  
Removal Efficiency ◽  
Primary Treatment ◽  
Pollution Load ◽  
Low Costs ◽  
Chemically Enhanced Primary Treatment

Chemically enhanced primary treatment (CEPT) process have advantages of low pollution load and low costs, it can greatly improve the removal efficiency of organic matter by primary treatment , so the process has been studied widely and intensively. In this thesis, the mechanism, coagulant type, dosage and precipitation time were studied.

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