David

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So far David has created 15 blog entries.

Water Quality for Cannabis Greenhouses

Off the radar grow-ups have a history of being just that "off the radar", low key often clandestine operations without much regulations or standards. When medicinal cannabis became legal in Canada in 2016 and recreational use in 2018 it brought about regulations and standards that were unheard of, while marijuana strains were always discussed, the [...]

By |2019-03-12T06:38:47+00:00March 11th, 2019|Uncategorized|Comments Off on Water Quality for Cannabis Greenhouses

Hard Rock Mine Hydrogeology & Acid Water Drainage

Man's activity in developing, operating, and abandoning a mine often affects the quality of the ground water and surface water. Acid water drainage from mines is an example of an impact from mining that results in degradation of ground and surface water. New flow systems are created by the mining activity. The mining made possible [...]

By |2018-11-06T21:39:20+00:00November 6th, 2018|Uncategorized|Comments Off on Hard Rock Mine Hydrogeology & Acid Water Drainage

Controlling Acid Mine Drainage

Mining activities were typified by surface exploratory drilling identifying ore distribution and extension of underground workings to the lead and zinc deposits outlined. Exploration holes were either left unplugged or plugged at the surface with a section of a telephone pole. Low grade ore and waste rock were discarded in rained out portions of drifts. [...]

By |2018-11-02T10:31:52+00:00November 2nd, 2018|Uncategorized|Comments Off on Controlling Acid Mine Drainage

On-Site Remediation Mining Waste

Cost effective remediation technologies are currently available to treat many of the hazardous materials which are risks to human health and the environment. On-site remediation technologies, EPA's preferred option, will be evaluated from a technological view point and the advantages, disadvantages and costs will be discussed. Regulatory Framework Since the promulgation of the Resource Conservation [...]

By |2018-08-20T23:18:32+00:00August 20th, 2018|Uncategorized|Comments Off on On-Site Remediation Mining Waste

Waste Water Treatment of Leach Waters

Environmental issues impact every aspect of industrial development and production today. Mining, although removed from many of the harsher environmental standards and costs felt by other industries since the advent of RCRA legislation, has found itself under increasing scrutiny by state and federal regulators. This is particularly so when the effects of mining migrate beyond [...]

By |2018-08-20T23:14:08+00:00August 20th, 2018|Uncategorized|Comments Off on Waste Water Treatment of Leach Waters

How to shock a well for bacteria

How to properly shock a well for coliform or e.coli bacteria is a question that comes up on a daily basis. So I’ll go through a few steps on how to do it correctly. Step #1 Flush well for 10 minutes, longer if well is over 150ft deep. Step #2 Size your well. Your well [...]

By |2018-08-10T11:59:36+00:00August 10th, 2018|Uncategorized|Comments Off on How to shock a well for bacteria

Passive Mine Drainage Treatment Systems

A Passive Mine Drainage Treatment Systems helps treat contaminated coal mine drainage to meet EPA and State water quality requirements. Approach A model (fig. 1) is presented for selecting, designing, and sizing one or several passive mine drainage treatment systems that can be used in remediation of abandoned mine lands (AML). The three principal types [...]

By |2018-07-23T06:04:15+00:00July 19th, 2018|Uncategorized|Comments Off on Passive Mine Drainage Treatment Systems

Zeolites to Remove Heavy Metals from Water

Most natural zeolites now being produced are used in low tech applications such as horse stall deodorizers, aquarium filters, and animal adsorbents. Characterization of Natural Zeolites: Before any uses or applications of zeolites to the recovery of heavy metals from mining or metallurgical effluents can be seriously considered it is necessary to characterize the zeolite minerals. [...]

By |2018-07-12T20:34:17+00:00July 12th, 2018|Uncategorized|Comments Off on Zeolites to Remove Heavy Metals from Water

Design Selenium Removal Plant – Mine Water Treatment

One objective of this study was to determine the critical parameters needed for designing of a plant to remove selenium from the mine leachate. While development of a full-scale engineering design was beyond the scope of the present study, the following design elements were evaluated: A) Loading of the Alumina to the Adsorbers B) Backwashing [...]

By |2018-07-12T19:59:26+00:00July 12th, 2018|Uncategorized|Comments Off on Design Selenium Removal Plant – Mine Water Treatment

World Bank & Extractive Industries – Mining

World Bank Background Makeup The World Bank is composed of the International Bank for Reconstruction and Development (IBRD) and the International Development Association (IDA). The World Bank Group (WBG) incorporates the International Finance Corporation (IFC), the Multilateral Investment Guarantee Agency (MIGA), and the International Centre for Settlement of Investment Disputes (ICSID) with the two banks. [...]

By |2018-07-12T13:12:30+00:00July 12th, 2018|Uncategorized|Comments Off on World Bank & Extractive Industries – Mining
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