Treated water quality

Treated Water Quality. Predicted analyses of a typical raw water treated by various lime and lime—soda softening processes are presented in Table 3. Treatment by lime converts the sodium bicarbonate in the raw water to sodium carbonate as follows ... 

There have been only a few studies have evaluated membrane microfiltration of secondary wastewater effluent. Microfiltration membranes might be used to achieve very low turbidy effluents with very little variance in treated water quality. Because bacteria and many other microorganisms are also removed, such membrane disinfection might avoid the need for chlorine and subsequent dechlorination. Metal... 

Multiple technologies are used to regenerate wastewater. The technologies are selected depending on the initial pollutant type and concentration, and treated water quality to be achieved. Stringent control of water quality and operational reliability are the main requirements which drive the technological choices. 

Additional analyses are given in Table IV to illustrate further the treated water quality. Copper and zinc analyses are included to show that these ions are carried down with the floe as would be expected. These two were the highest heavy metal contaminates of the by-product AICI3 (see Table II). Zinc present in the raw river water was also removed. 

Treated Water Quality The residual alkalinity in the product water typically follows the profile shown in Figure 8.6 ranging from near zero (pH 3.8-4.0) at the beginning of the run up to about 10% of the influent alkalinity at exhaustion of the resin (pH 5.6-5.8). If the quantity of regenerant used is less than that equivalent to the exhaustion capacity of the resin then it is essential to meter the service cycle to a strict volume throughput equivalent to a capacity calculated from the quantity of regenerant employed. 

If treated water quality with regard to silica is non-critical, or is removed at a later stage, there are significant operating cost benefits in employing Type 2 resins but this has to be set against their more rapid capacity loss, and therefore shorter operational life compared with Type 1 materials (Chapter 4). 

Treated Water Quality The acid addition reactions undergone by the weakly basic anion exchange resin are shown by the following overall scheme ... 

Table-4 Raw and Treated Water Quality of Pyrolysis Waste Water (HIg)...

This results in higher treated water qualities in countries like the US or Europe, where standards are generally very high and source waters of poor quality due to high population densities. 

This is suitable for treatment of water containing considerable amounts of dissolved solids. The fraction of water rejected can be on the higher side (depends on the treated water quality desired) and one should check if there is any problem at site for disposal of the wastewater generated due to backwashing of sand filter, active... 

The water s electrical conductivity has a major impact upon power requirements and process time. The lower the conductivity, the greater the voltage and hence power required, or the longer time needed to process it. Otherwise, conductivity has no detected effect upon the treated water quality, even with salinities over ten times greater than that of seawater. The pollutant type also affects the required treatment dose. Larger pollutants, such as clay, require less treatment per unit weight of pollutant than do smaller pollutants, such as starch. For a given pollutant type, the treatment required is linearly proportional to the amount of pollutant to be removed. 

Examine the effects of ozone dosage, ozone dosage method, and membrane filtration method on membrane filtration flux and treated water quality through a short-term experiment, and determine conditions of a long-term experiment. 

Treated Water Quality Table 5.6 shows the results of treated water quality analysis on raw water, MF feed, MF permeate, and water treated with GAC. Water quality after being treated with GAC met the requirements of the water quality standards of the Water... 

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