Entech Design, Inc.

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  • Filter backwashing: When and how

    Filter backwashing: When and how

    Backwashing filters is a necessary and important part of the filtration process. Many operating problems associated with the filtration process can be traced to delayed or inadequate backwashing. Producing a high-quality and low turbidity filtered ...

    Michael J. MacPhee, William Becker

  • Filter backwashing

    Filter backwashing

    Backwashng a drinking water system filter means reversing and increasing the water`s flow to flush out accumulated debris and particles. Backwashing is not only vital to the life of a filter, it is fundamental to the quality of water coming out of ...

    Zane Satterfield

  • Optimizing filter backwashing

    Optimizing filter backwashing

    Optimum filter performance has become a critical component of surface water treatment. For conventional and direct filtration systems, LT1ESWTR requires the combined filter effluent turbidity be less than or equal to 0.3 NTU’s for 95% of the ...

    Mike Murphy

  • Dewatering bin carryover study

    Dewatering bin carryover study

    Bottom ash dewatering bins (hydro-bins) at coal fuel utility plants allow ash material to carry over to ash settling ponds, or in the case of closed loop systems, re-circulate suspended ash solids, resulting in the following problems: Frequent ...

  • Online interface/sludge blanket level analyzers performance evaluation report

    Online interface/sludge blanket level analyzers performance evaluation report

    Following is a review of the ITA report on independent field evaluation of ultrasonic sludge level analyzers provided by four manufacturers. The evaluation was conducted over a period of 15 weeks at the Blue Plains Advanced Wastewater Treatment ...

  • Primary clarification evaluation and optimization study

    Primary clarification evaluation and optimization study

    This report describes the evaluation and optimization of primary clarifiers at the San Jose/Santa Clara Water Pollution Control Plant. Part 1 of this report examines the individual effect of the concentration of non-settleable solids, detention ...

  • Entech Design Inc. – Manufacturer’s comments

    Entech Design Inc. – Manufacturer’s comments

    The following section details Entech Design, Inc`s Manufacturer Comments pertaining to the test data reported herein. We would like to express our appreciation to the Instrument Testing Association staff for inviting us to participate in this test ...

    Tony Palmer

  • New sludge blanket level analyzer from Entech

    New sludge blanket level analyzer from Entech

    Entech Design, Inc.’s BinMinder 9300 features a multi-channel analyzer designed for superior sludge level detection in the full range of water and wastewater applications. The system consists of an analyzer that is capable of operating from one to ...

    Dan Tumis

  • Media expansion monitoring improves filtration

    Media expansion monitoring improves filtration

    In municipal surface water treatment plants, optimum filter performance is a crucial component. Filtration is the primary treatment process at water treatment plants, and backwashing is the primary means to keep filters functioning properly to ...

    Dan Tumis

  • Bed expansion affects performance

    Bed expansion affects performance

    The experience of Pennsylvania Department of Environmental Protection staff over 14 years conducting filter plant performance evaluations led investigators to identify a coomon thread:`inadequate filter bed expansion eventually contributes to poor ...

    Ed Chescattie, Kevin Anderson