An advanced treatment of high-strength opium alkaloid processing industry wastewaters with membrane technology: pretreatment, fouling and retention characteristics of membranes

Abstract ALLEGHENY ALMAR-362 is an age-hardenable martensitic stainless steel recommended for applications requiring high strength and good corrosion resistance, such as aircraft and missile structures, hydraulic and pneumatic equipment components, and in the chemical processing industry. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive strength as well as fracture toughness. It also includes information on corrosion resistance as well as casting, forming, heat treating, machining, joining, and surface treatment. Filing Code: SS-234. Producer or source: Allegheny Ludlum Corporation.

Download Full-text

Ammonia recovery from high strength agro industry effluents

Water Science & Technology ◽

10.2166/wst.2002.0426 ◽

2002 ◽

Vol 45 (12) ◽

pp. 189-196 ◽

Cited By ~ 27

Author(s):

M. Altinbas ◽

I. Ozturk ◽

A.F. Aydin

Keyword(s):

Experimental Studies ◽

Ammonium Phosphate ◽

High Strength ◽

Stoichiometric Ratio ◽

Ammonia Content ◽

Magnesium Ammonium Phosphate ◽

Fenton’S Oxidation ◽

Ammonia Recovery ◽

Fenton's Oxidation ◽

Opium Alkaloid

The aim of the study was to investigate ammonia recovery from high strength agro industry effluents involving significant amounts of ammonia, by applying magnesium ammonium phosphate (MAP) precipitation technology. Two types of industrial effluents have been tested in the study. The first plant was an opium alkaloid processing industry and the second one was a baker`s yeast industry. High chemical oxygen demand (COD), total Kjeldahl nitrogen (TKN) and unacceptable dark brown color characterized effluents from both industries. Effluents from the biologically treated opium alkaloid and baker's yeast industries were both applied at the stoichiometric ratio (Mg:NH4:PO4 =1:1:1) and above the stoichiometric ratio (Mg:NH4:PO4 =1.1:1:1.1) to MAP precipitation. NH4 removals of 61-80% were achieved at the pH of 9.2 at the stoichiometric ratio, whereas 83% NH4 removal was obtained at the pH of 9.2 above the stoichiometric ratio. Experimental studies performed on both anaerobically and/or aerobically treated baker`s yeast and opium alkaloid industry effluents have clearly indicated that MAP precipitation was an appropriate treatment option for NH4 removal or struvite recovery from high ammonia content agro industry effluents. Additional ammonia recovery studies were conducted on ozonated and Fenton's oxidation applied effluents and these have also indicated that the amounts of struvite and the quality of MAP precipitate was increased significantly. In this framework, MAP sludge recovered from combined biological and Fenton's oxidation treatment effluents were considered as a more valuable slow release fertilizer for agricultural use.

Download Full-text

Membrane integrated process for advanced treatment of high strength Opium Alkaloid wastewaters

Water Science & Technology ◽

10.2166/wst.2018.065 ◽

2018 ◽

Vol 77 (7) ◽

pp. 1899-1908 ◽

Cited By ~ 1

Author(s):

Güçlü Insel ◽

Ahmet Karagunduz ◽

Murat Aksel ◽

Emine Cokgor ◽

Gokce Kor-Bicakci ◽

...

Keyword(s):

Inorganic Nitrogen ◽

Oxygen Demand ◽

High Strength ◽

Complete Removal ◽

Advanced Treatment ◽

Treated Effluent ◽

Aeration System ◽

Total Inorganic Nitrogen ◽

Conductivity Parameter ◽

Activated Sludge Systems

Abstract In this study, an integrated aerobic membrane bioreactor (MBR)-nanofiltration (NF) system has been applied for advanced treatment of Opium processing wastewaters to comply with strict discharge limits. Aerobic MBR treatment was successfully applied to high strength industrial wastewater. In aerobic MBR treatment, a non-fouling unique slot aeration system was designed using computational fluid dynamics techniques. The MBR was used to separate treated effluent from dispersed and non-settleable biomass. Respirometric modeling using MBR sludge indicated that the biomass exhibited similar kinetic parameters to that of municipal activated sludge systems. Aerobic MBR/NF treatment reduced chemical oxygen demand (COD) from 32,000 down to 2,500 and 130 mg/L, respectively. The MBR system provided complete removal of total inorganic nitrogen; however, nearly 50 mgN/L organic nitrogen remained in the permeate. Post NF treatment after MBR permeate reduced nitrogen below 20 mgN/L, providing nearly total color removal. In addition, a 90% removal in the conductivity parameter was reached with an integrated MBR/NF system. Finally, post NF application to MBR permeate was found not to be practical at higher pH due to low flux (3–4 L/m2/hour) with low recovery rates (30–40%). As the permeate pH lowered to 5.5, 75% of NF recovery was achieved at a flux of 15 L/m2/hour.

Download Full-text