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Biologically treated wastewater

To enhance the purification process and increase the degree of purification, powdered activated carbon (PAC) may be added directly to the aeration tank, or the biologically treated wastewater may be filtered through granulated activated carbon (GAC) for posttreatment. [Pg.168]

The Reuse of Biologically Treated Wastewater as Cooling Tower Makeup... [Pg.308]

Vera L, Delgado S, and Elmaleh S, Gas sparged cross-flow microfiltration of biologically treated wastewater. Proceedings of the Membrane Technology in Environmental Management, Tokyo, 1999, pp. 131-137. [Pg.231]

Analytical characteristics of the proposed method are as follows. The detection limit (0.20 mg/L) is given as three times the standard error value for the blank, chosen as a biologically treated wastewater sample with negligible detergent concentration. The sensitivity is 0.04 mg/L, and the analytical range depends on the spectrum saturation occurring... [Pg.103]

A technological line of wastewater treatment plants involves some of the following processes or their combinations quantity and quality equalization, straining, sedimentation, flotation, physico-chemical and chemical treatment, natural biological treatment, activation, bioflltration, after-treatment of biologically treated wastewaters and disinfection [23-27]. [Pg.247]

Filtration in wastewater treatment is used for removal of suspended organic matter (e.g. floccules of activated sludge) in biologically treated wastewaters, thus improving considerably the quality of the treated water. [Pg.251]

Claxification is one of the most important physico-chemical processes in water technology. It is used for both water treatment and industrial wastewater treatment in the case where they contain toxic, biologically difficult-to-degrade substances, or substances which cannot be separated because of their size. In recent times it is also used for after-treatment of biologically treated wastewaters. [Pg.255]

Wastewater. Phenol is a toxic poUutant to the waterways and has an acute toxicity (- 5 m g/L) to fish. Chlorination of water gives chlorophenols, which impart objectionable odor and taste at 0.01 mg/L. Biochemical degradation is most frequently used to treat wastewater containing phenol. Primary activated sludge, along with secondary biological treatment, reduces phenol content to below 0.1 mg/L (69). [Pg.302]

The condensates are separated into paraffin and aqueous phases (11). The paraffin is returned to the reactor cycle. Part of the water is recirculated the wastewater will be biologically treated. [Pg.148]

It has been recognized for some time that fluids in motion, such as the atmosphere or the ocean, disperse added materials. This properly has been exploited by engineers in a variety of ways, such as the use of smoke stacks for boiler furnaces and ocean ontfalls for the release of treated wastewaters. It is now known that dilution is seldom the solution to an enviromnental problem the dispersed pollutants may accumulate to undesirable levels in certain niches in an ecosystem, be transformed by biological and photochemical processes to other pollntants, or have nnanticipated health or ecological effects even at highly dilute concentrations. It is therefore necessary to rmderstand the transport and transformation of chemicals in the natural environment and through the trophic chain ctrlminating in man. [Pg.138]

Saski EK, A Vahatalo, K Salonen, MS Salkinoja-Salonen (1996b) Mesocosm simulation on sediment formation indnced by biologically treated bleached kraft pulp mill wastewater in freshwater recipients. In Environmental Fate and Effects of Pulp and Paper Mill Effluents (Eds MR Servos, KR Munlittrick, JH Carey, and GJ van der Kraak), pp. 261-270. St Lucie Press, Delray Beach, FL. [Pg.275]

Although some of the examples used for illustration in Chapter 14 impinge on biological wastewater treatment technology, a systematic acconnt of these lies beyond the scope of this volume and the competence of the anthors. It is worth noting, however, that anaerobic reactors that are developed to treat wastewater with the object of producing methane may... [Pg.732]

Kraft pulp mills treat wastewater using primary (physical) and secondary (biological) treatment to reduce pollutant discharges to receiving waters. Kraft mills typically collect and treat the following wastewaters36 ... [Pg.891]

The 1980 s and the early 1990 s have seen the blossoming development of the biotechnology field. Three-phase fluidized bed bioreactors have become an essential element in the commercialization of processes to yield products and treat wastewater via biological mechanisms. Fluidized bed bioreactors have been applied in the areas of wastewater treatment, discussed previously, fermentation, and cell culture. The large scale application of three-phase fluidized bed or slurry bubble column fermen-tors are represented by ethanol production in a 10,000 liter fermentor (Samejima et al., 1984), penicillin production in a 200 liter fermentor (Endo et al., 1986), and the production of monoclonal antibodies in a 1,000 liter slurry bubble column bioreactor (Birch et al., 1985). Fan (1989) provides a complete review of biological applications of three-phase fluidized beds up to 1989. Part II of this chapter covers the recent developments in three-phase fluidized bed bioreactor technology. [Pg.586]

Bes-Pia A, Mendoza-Roca JA, Roig-Alcover L et al (2003) Comparison between nanoliltra-tion and ozonation of biologically treated textile wastewater for its reuse in the industry. Desalination 157 81-86... [Pg.151]

At least nine United States pesticide manufacturers use chemical oxidation to treat wastewater [7]. In these systems, more than 98% of cyanide, phenol, and pesticides are removed COD and other organics are reduced considerably. Some plants use chemical oxidation to reduce toxic compounds from the wastewater to make the streams more suitable for subsequent biological treatment. [Pg.529]

X 10 kkg/year, respectively]. Wastewater consists of direct contact process water, noncontact blowdown, and noncontact ancillary water. The total flow of contact water is approximately 1.27 x 10 mVday (3.355 x 10 gpd), and the total flow of noncontact water is 340.4 mVday (9 X 10" gpd). Treatment of the wastewater consists of coagulation, sedimentation, and biological treatment with extended aeration. Treated wastewater is discharged to a surface stream. [Pg.566]

Constmcted wetlands use biological processes inherent in natnral wetlands and a system designed to optimize those processes to treat wastewater contaminants specific to a particnlar site. Constructed wetlands are passive treatment systems that mimic, rather than overcome, natnral processes. Consequently, the cost of operation and maintenance is significantly lower than for... [Pg.474]


See other pages where Biologically treated wastewater is mentioned: [Pg.252]    [Pg.509]    [Pg.694]    [Pg.754]    [Pg.394]    [Pg.309]    [Pg.265]    [Pg.376]    [Pg.289]    [Pg.435]    [Pg.435]    [Pg.426]    [Pg.144]    [Pg.435]    [Pg.435]    [Pg.252]    [Pg.509]    [Pg.694]    [Pg.754]    [Pg.394]    [Pg.309]    [Pg.265]    [Pg.376]    [Pg.289]    [Pg.435]    [Pg.435]    [Pg.426]    [Pg.144]    [Pg.435]    [Pg.435]    [Pg.337]    [Pg.166]    [Pg.467]    [Pg.506]    [Pg.137]    [Pg.139]    [Pg.12]    [Pg.214]    [Pg.256]    [Pg.525]    [Pg.180]    [Pg.181]    [Pg.189]    [Pg.285]    [Pg.535]    [Pg.5]    [Pg.410]   
See also in sourсe #XX -- [ Pg.308 ]




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