1. The main technical
and economic indexes of process selection include: treatment of unit
water investment, reduction of unit pollution investment, treatment of
unit water consumption and cost, reduction of unit pollutant power
consumption and cost, occupation of land, operation performance
reliability, management and maintenance of the degree of difficulty,
overall environmental benefits and so on.
2. Urban wastewater treatment
technology should be selected according to the treatment scale, water
quality characteristics, environmental functions of the receiving water
body, local actual conditions and requirements, and selected after
comprehensive technical and economic comparison.
3. It is necessary to
determine the influent water quality of sewage, optimize the parameters
of process design, and make a detailed investigation or determination of
the current water quality characteristics of sewage, and make a
reasonable analysis and prediction. The composition of water quality is
complex. When special, the dynamic test of sewage treatment process
should be carried out, and the pilot study should be carried out if
necessary.
4.
The new process should be adopted actively and prudently. For the new
process that is applied for the first time, it must pass pilot test and
production test, and provide reliable design parameters before
application.
5. In the construction
of the same sewage plant by stages, the same process should be adopted
in each stage, and the construction scale of each stage should be the
same as possible.
Related reading:Aluminium Chloride for Sewage Sludge Dewatering
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