Libris Britannia 4/science library(b).zip/science library(b)/SCIENTIF/1461.ZIP/TEXT.ARC/INSTRUCT.TXT

Text File | 1988-12-22 | 16KB | 269 lines

                        INITIAL INSTRUCTIONS



                With the advent of computerization and the
        availability of personal computers, it is only a natural
        migration of the plant operator's interests to find itself
        involved with computers. Thus far, there are many software
        packages on the market that have to do with total plant
        operations and deal with a large data base that involves
        instrument monitoring and mainframe computer setups.  There
        are some programs on the market that deal with process
        control, but they are usually expensive and are meant for
        large implementation.  So far, there has not been many
        programs available for the individual operator for use on his
        personal computer (or a PC that may be available to him at
        his plant).

              This program is directed toward that operator who may
        not have a large mainframe available nor a sizeable program
        implemented that usually is out of his reach (except as
        perhaps a data entry clerk).  An operator will find this
        program and method useful no matter the size of his plant,
        but the greatest need might be found with that operator who
        is involved with smaller plants and limited money and
        personell.  The method itself should be comtemplated as a
        very practical attack at process control...and a common sense
        approach of the objectives of orthodox EPA methods.

             The Program is written in Basic language for the reason
        that most operators will migrate at least to some degree into
        a familiarization with this language.  It is a readily
        accessable language for those of a technical mind who may not
        be programmers in the technical sense.  In a way, this
        program is meant as only the skeletal beginnings of an
        extensive tool by which the operator can build (or delete) as
        he wishes.

            The first step in use of this program is to create a
        backup copy of the disks.  Issuing of the command <DISKCOPY
        A: B:> will prompt DOS to ask for insertion of your SOURCE
        DISK upon which you should insert the program disk.  Once
        this is read into buffer memory, the DOS will ask for
        insertion of the TARGET DISK upon which you should insert a
        newly formatted disk for the copy. Pressing <enter> will then
        initialize Diskcopy to make a copy of the disk. Repeating the
        procedure will give you copies to rely upon if anything
        should happen to the workdisks you have created.

            Note that your prompt may be different than what is used
        in these instructions.  Please replace your prompt if
        different from <:"disk drive">.

             There are text files on the disks that are immediately
        readable...the second disk used as a text reference guide.
        Typing <START2> with the text file inserted in your floppy
        disk drive will bring up a text menu from which you can call
        up these text files.  The subjects are as follows : MCRT,
        CELLS, WWTRENDS, INTRODUCTION, MICROBES, CHEMICAL AIDS,
        NITRIFICATION, CHLORINE, and ANAEROBIC DIGESTION and a second
        MCRT text file.  Entry of <MCRT>, <CELLS>, <WWTRENDS>,
        <INTRO>, <MICROBES>, <CHEM>, <NITRIFY>, <CL2>, <DIGESTER> or
        <MCRT2> will display the contents of these text files without
        the menu on your monitor for view.  Entering <ALL> will type
        out all the text files in succession.  Entry of <INSTRUCT>
        will of course type this text file.

          To enter Basic language from your DOS network, simply enter
        the word <START> with your program disk inserted.  It is
        recommended that once into BASIC, that you type in the entry
        <KEY OFF> to erase from the screen your function keys
        display.

         Your first step in set up of the program is to list all files
        that have a .BAS ending on their name.  To do this, enter the
        command <FILES "B:*.*"> and you will see the directory typed
        onto your screen.  You may have to enter <ctrl/break> to stop
        program first.  There are three files that need to be updated
        with your own plant dimensions.  This is an inavoidable step
        without customized programing for your particular plant.

            The first file to update will be PROCESS.BAS.  This is
        your main program that does most of the calculations that
        your other programs will use.  An edit portion is provided on
        the end of each of these programs that needs updating.  First
        you must load the program into memory by typing  <LOAD
        "B:PROCESS.BAS"> verbatim and then pressing enter.  With the
        "ok" prompt, the program will be in your computer's memory.
        Next step is to type in the command <RUN 20000>(twenty
        thousand).  This will initialize the program at the editing
        portion of the program. The program instructions will take
        over in letting you know what to do step by step to install
        numbers for your plant.  Be sure not to alter any of the
        lines except for the numbers that are asked for.  Altering
        brackets, semicolons, paranthesis or any punctuation will
        cause erroneous results.  It is best to use your keyboard
        "insert" key, (labeled INS on most keyboards) and then
        carefully delete the unwanted numbers with your delete key,
        labeled DEL. Once you have entered your plant's paramters,
        you will have to "save" the new programing to the disk.  This
        is accomplished simply by returning to the main menu and
        selecting the "SAVE TO DISK" or "SAVE PROGRAMING" option from
        menu.  Be sure you have at least 30,000 bytes of room left on
        your disk for this.  (if the edit program does not return you
        to menu automatically, type in <RUN> and press enter).

         The edit program has the final function of deleting itself
        to save room in your computer memory, so be sure of your
        numbers and then be sure you have backup copies made of your
        disks.  You will be given the option of keeping the editing
        program however.

          After this step, you should have updated the main program
        PROCESS.BAS with your plant's numbers and have it saved on
        disk. There are two more files that need updating with your
        plant's parameters.  The next file will be the file
        LISTS.BAS.  The procedure is exactly the same was it was for
        PROCESS.BAS.  Enter <NEW> and then type and enter <LOAD
        "B:LISTS.BAS">.  Again at the "ok" prompt, type and enter
        <RUN 20000>.  The edit portion is again attached at the end
        of this program and will give you instructions as you go.
        The same care applies in not altering any punctuation and
        making sure your numbers are the ones called for in the
        program.   Again, be sure you save the new programing once
        you've returned to the main menu.

          The final file to be updated is the file PERIODS.BAS. There
        is only one line to update...but it is done with the same
        procedure as Process and Lists.  Type and enter <NEW> and the
        at  "ok" prompt type and enter <LOAD "B:PERIODS.BAS">.  Then
        type and enter <RUN 20000>.  The edit program will take over
        from there.

          Now your program should be customized to apply to your
        plant. Initialize the start of program running with the
        direct command of <RUN "B:PROCESS.BAS">.  If you have
        multiple tanks in any given section of your process, it
        recommended that you use total volumes "under aeration" or
        "under clarification".  Elsewise, you can set up another
        disk.  The programs are set up to handle one process.  If
        your plant has more than one, then it will require  seperate
        disks.

         Once you have set up the program with your plant's design
        parameters, the next step is to start your data files from
        which the program will derive its calculations.  There are
        some data files that already exist on your disk for
        demonstration purposes. It is recommended that you run the
        program several times getting the feel for it.  Afterwards,
        you will need to erase and then reopen each data file. This
        will also be explained to you as you run the edit portion of
        the programs and is done automatically. Once you have reset
        the data files, there will be no data from which the programs
        can run until you begin entry of your own data.

          Once your data files are reset for new data, you are ready
        to start entering your plant's data on a daily basis.  The
        data that is used are the usual numbers one obtains in normal
        daily monitor of a plant...MLss, RASss, WASss, Waste
        gallons(mg), Settleable Solids, RAS flow(%influent), Infl Q,
        effl Q, infl BOD, Infl Suspended solids, effl BOD, and effl
        suspended solids.  These will be entered into your DATA file.
        Your plant calculations of MCRT(daily and running averages as
        perscribed by your input), f/m, svi, lbs under aeration, lbs
        clarification, and lbs wasted and as well your net MLVSS
        solids produced for lbs of infl BOD applied will be
        automatically calculated and entered under the file PARAM.
        The BOD listings are of course difficult to assess on a daily
        basis immediately.  It is recommended that entries are made
        by judgement and then when BOD test results are obtained to
        update the files.  There is an edit portion of programing
        that can readily accomplishe this.  In time, the profiles
        will dictate to you a good idea of plant conditions that will
        enhance your judgement entries. A probability listing is
        provided for this important parameter once you have entered
        several days worth of data.  Max, mins and averages are also
        automatically derived from the data you enter.  Target and
        scenario calculations are provided for RAS control, MCRT
        targeting, F/m monitoring, and aeration control(the aeration
        applies only to coarse bubble or mechanical type systems).

         There is a supplement program that uses Al West methods
        using sludge units.  The main purpose of this section of
        programing is RAS control, which has been found to be a very
        successful method for this control.  Data entry here is on a
        daily testing basis and there is no data file.  Input is
        centered around flow and centrifuge spin results and
        settleometer testing as perscribed in the Al West Manual.

          A portion of this program that may be somewhat new to the
        operator is the microslide portion.  The data entry here is a
        simple relative number assigned to each microslide grouping
        as their activity describes.  This is a simple method that
        relies quite heavily on the judgement of the operator...but
        is quite accurate over time as the operator is required to
        observe his microslides on a daily basis.  It has been
        demonstrated as being a very successful procedure that
        graphically displays the activity of one's process biology
        with the relative oxidation level that his process is at.
        Please read the INTRO text for further explanation of this
        programing.

            Also required as daily data input are the relative
        perceptions of the operator to his process oxidation level
        and the MCRT and as well as a short verbal description of the
        state of his process.  This portion of the program is found
        in the TROUBLESHOOTING GUIDE that also includes a capsule
        guide of the charts found in the EPA manual MO-14 with an
        attempt to relate solutions to the simplified perception of
        oxidation level.   There is also a Chemical guide provided
        that gives a quick overview of chemicals and their recommened
        applications if there is special needs in your plant.
        Graphing of all plant relationships can be accomplished in
        the Al West segment.  Graphs are set up for text monitors
        since it is assumed that many operators will not have graphic
        or color monitors available. These graphs are for quick
        depiction of general relationships.

          This program is a chain of several smaller programs.  It is
        assumed that quite a few operators will become familiar with
        Basic programming as time goes (if they are not already
        familiar) and in each small program is the ability to save
        any added changes with a simple keystroke.  It is recommended
        that changes be additions at the end of these programs and
        not internal changes of the programs themselves.  Any new
        saving of programing will require a .BAK file to be present
        on the disk (with use from the menus).  These are, as the
        extension suggests, backup files.  Once new programing is
        set, you may want to delete these for added room on your
        disks.

          If you have a hard disk, enter all these files under the
        same subdirectory.  This will be the most advantagous setup
        since your data files will then have nearly unlimited room
        for additional imput and storage.  Your data files will
        eventually be the largest files you'll have and thusly setup
        to provide greatest disk space is best.  You may decide to
        use only the operational programs on one disk to have enough
        room for the data files.  These will be the files
        PROCESS.BAS, PERIODS.BAS, AWEST.BAS, BUGS.BAS, and
        TROUBLE.BAS.  All other files are provided as utlity use for
        your convenience as reference and insight.  The LISTS.BAS
        program for instance is provided to display different
        scenario listings as parameters are input by you.  The
        CHEM.BAS program is a reference guide that you probably would
        not use on a daily basis..as well the PROBABLE.BAS program
        that provides you with a probability of different influent
        and effluent parameters.

          Printing options are of the DATA file, the PARAMeters file,
        or the Q DATA file.  The PARAMeters data file is set up that
        you may obtain a daily, weekly, monthly(or any set period you
        input)report of the plant profile.  It is assumed that most
        operators will acquiesce into DOS systems and will probably
        have IBM compatible equipment...as in an IBM or IBM emuable
        printer.  If so, this information is readily available for
        printout with a simple key stroke.  If the available printer
        is not IBM imuable, new programing will have to be installed
        as described by the printer manual.  An option to this is to
        obtain the Shareware program PC-WRITE that has an extensive
        printer definition portion of its program that can be applied
        to your printer.  Respect for the Shareware by-laws prohibits
        provision of this with this program.

        Requirements for this program are DOS 2.0 and IBM BASICA 3.1
        or equivalents.