wastewater treatment

กำจัดตะกอน, สิ่งปนเปือน, สารแขวนลอยทุกชนิด ด้วย Coagulant , flocculants, PAC, Poly DADMAC | สำหรับ Raw water |  Waste Waster Treatment | sludge treatment 

The PolyDADMAC, Polyamine , PAC 10 % Liquid Coagulants are eliminated of the electrical charges of repulsion surrounding particles in suspension,  suspended solids have been precipitated  definition of flocculation.

Wastewater treatment flocculants polymers remove suspension solid from water, both coagulation and flocculation. At first provided definitions for both coagulation and flocculation.




Concept of waste water treatment :


•Chemical methods
Coagulation, flocculation, combined with flotation and filtration, precipitation, ion exchange, electroflotation, electrokinetic coagulation.
•Physical methods
Membrane-filtration processes (nanofiltration, reverse osmosis, electrodialysis, . . .) and adsorption techniques.
•Biological treatments
Biodegradation methods such as fungal decolorization, microbial degradation, adsorption by (living or dead) microbial biomass and bioremediation systems

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Coagulation and Flocculation for waste water treatment :

•Definition  :   Destabilisation of colloid particles by the addition of chemicals (coagulant)
•Applications     :Industrial waste containing colloidal and suspended solids (e.g. pulp and paper, textile)

Coagulant type
•Metal coagulants :aluminium-based coagulants, Fero-based coagulants magnesium chloride (MgCl2)
•Organic polymer coagulants : Polyacrylamide, Chitosan, Moringa olifeira Alginates (brown seaweed extracts)

Flocculation :
is a process of forming aggregate of flocs to form larger settleable particle. The process can be described as follows:
·Mutual collision of small floc resulting in bigger size.
·Usually slow speed or gentle mixing is used so as not to break the large flocs due to shear.
·Polymer or large molecular wt compound is added to enhance floc build up. Most of them are proprietary chemicals.

The benefits of flocculation in waste water treatment :

·To improve settling of particles in sedimentaion tank
·To increase removal of suspended solids and BOD
·To improve performance of settling tanks

Coagulation:   is a chemical technique which is directed towards the destabilisation of the charged colloidal particals.
Flocculation:   is the slow mixing technique which promotes the agglomeration of the stabilised particles.

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Polyaluminium Chloride , PAC 10 % liquid :  5  บาท/kg

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Polyamine , polyDADMAC liquid : 80-90  บาท/kg

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