Questions & Answers

Ion Exchange for Bicarbonate Dosage in Drinking Water

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I am looking for an Ion Exchange Resin for anionic monovalent ions. I would like to replace chlorides with bicarbonates for drinking water purpose.  Which ...

Academic Treatment Methods Chemical Treatment Drinking Water Treatment Chlorination Ion Exchange Resin Carbonates Treatment Chemicals

Poor Settling in Wastewater Digesters

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Our facility is a 2 MGD Sequential Batch Reactor Activated Sludge Wastewater Treatment Facility. We waste our solids to a sludge anoxic holding tank from the ...

Technology Anaerobic Digestion Sludge Treatment Waste Water Treatments Wastewater Treatment Sludge Treatment & Management

Decentralized Wastewater Treatment Plant in Industrial Parks

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Does anyone have any information about decentralized wastewater treatment plants in industrial parks for wastewater recycling/reuse? Has it been ...

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UV Dose Calculation

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I need a simple way to calculate the UV-dose (mW/cm2) without the use of a failing UV-intensity meter so I can compare to a proposed effluent standard in our ...

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Water Hammer Calculation

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What is the simplest way of calculating the maximum water hammer for an HDPE pipe?

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How Will the Growing U.S. Marijuana Market Impact the Water Industry?

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The legal marijuana market is expanding as recreational and medicinal restrictions are increasingly lifted in the U.S. As a result of this: How can ...

Social Sustainable Agriculture Resource Management Water Resource Management Water Resources Sustainable Water Resource Management Natural Resource Management Irrigation Management Resource Management

RO Design Flux

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When the average flux for well water RO design is in the range of 27-34 lmh, does this mean that each stage flux will be in this range or the overall flux (for ...

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Bromine as a Water Disinfectant

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There are several domestic water filters which use bromine for disinfection. However, I've learned that bromine is not so common in drinking water ...

Academic Drinking Water Security Heath & Safety Treatment Methods Chemical Treatment Drinking Water Treatment Disinfection

Strong Sulfide Odour in Water

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I have a problem with very strong odour of sulfide before the RO and in the permeate water. The odour stays the same strength. I know hydrogen sulfide passes ...

Technology Potable Drinking Water Security Treatment Methods Drinking Water Treatment Water Treatment & Control Reverse Osmosis

Toxic Algae Bloom Prevention

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In the event that emergency pumping performed to mitigate flood conditions has resulted in a non-toxic cyanobacterial algal bloom within the water source to ...

Academic Environmental Health Algaecides Algae Aquatic Environment Algae Treatment

Tube Settler Media Calculation

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How can I calculate the quantity of tube settler media in the clarifier tank?  Which factors contribute most to the calculation?

Technology Flocculation Treatment Methods Coagulants Water Treatment & Control Waste Water Treatments Wastewater Treatment Water Treatment Solutions Total Dissolved Solids (TDS)

Lamella Clarifier Design

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I want to design a lamella clarifier with the following specifics: the flow is 208 m3/hr the inlet suspended solids is 250 ppm.  How can I best design the ...

Technology Sewage Treatment Industrial Wastewater Treatment Water Treatment & Control Industrial Water Treatment Waste Water Treatments Wastewater Treatment Water Treatment Solutions Industrial Water Treatment Total Dissolved Solids (TDS)